Diesel engine mounting arrangement for automatic compensation of hull inclination

Abstract

The application discloses a diesel engine mounting device capable of automatically compensating for the inclination of a ship body, which comprises a diesel engine bearing platform, a first floating support mechanism and a plurality of amplitude-variable support mechanisms. The first floating support mechanism comprises a first base, a first adjusting block and a first supporting block. The first base is fixed on the ship body, the first adjusting block is fixedly connected with the first base, and the first supporting block is supported on the top of the first adjusting block. The amplitude-variable support mechanism comprises a spring, a hydraulic oil cylinder and a second floating support mechanism. The lower end of the spring is fixedly connected with the ship body, the upper end of the spring is fixedly connected with the bottom of the hydraulic oil cylinder, the oil inlets of the plurality of hydraulic oil cylinders are respectively communicated with an oil inlet constant pressure cavity, and the oil outlets of the plurality of hydraulic oil cylinders are respectively communicated with an oil outlet constant pressure cavity. The application can automatically compensate for the inclination of the ship body, so that the diesel engine bearing platform can always keep horizontal balance. The application can arrange the diesel engine along the transverse direction of the ship body, which can not only avoid increasing the length of the ship body and reducing the tonnage of the ship body, but also avoid the diesel engine failure caused by the transverse inclination of the ship body.

Description

Technical Field

[0001] This invention relates to a diesel engine mounting device, and more particularly to a diesel engine mounting device for ships with large angles of inclination, belonging to the technical field of marine equipment. Background Technology

[0002] Ships at sea experience pitching and rolling due to waves and wind, and trimming and listming can occur under ballast failures or special circumstances. The China Classification Society's "Rules for Classification of Steel Seagoing Ships" clearly stipulates that the design, selection, and arrangement of the ship's main and auxiliary engines, shafting transmission devices, and mechanical equipment related to ship classification must comply with the regulations on ship inclination angles to ensure their normal operation. The regulations show that the transverse inclination angle (including roll and list) of the ship's main engine, auxiliary engines, and safety equipment is significantly greater than the longitudinal inclination angle (including pitch and list), generally three times that of the longitudinal inclination. Marine diesel engines are also designed according to these inclination angle regulations, which dictates that the diesel engines must be arranged along the ship's length. However, some special ships lack sufficient engine room space for longitudinal diesel engine placement, necessitating an increase in ship length. This increase in length leads to an increase in tonnage, ultimately resulting in higher operating costs. If the diesel engine is arranged along the width of the ship, i.e., installed transversely, when the ship rolls more than 10°, the diesel engine will experience malfunctions due to structural limitations, such as failure to draw in lubricating oil and abnormal stress on the bearing ends. At the same time, the vibration generated by the diesel engine will also cause varying degrees of damage to other equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a diesel engine mounting device that is simple in structure, low in cost, and allows the diesel engine to be arranged laterally along the ship to automatically compensate for the ship's tilt.

[0004] This invention is achieved through the following technical solution:

[0005] An automatic hull tilt compensation diesel engine mounting device includes a diesel engine support platform, a first floating support mechanism, and several luffing support mechanisms. The first floating support mechanism and several luffing support mechanisms are vertically fixed to one side of the hull, and the several luffing support mechanisms are symmetrically arranged on both sides of the first floating support mechanism. The diesel engine support platform is supported on top of the first floating support mechanism and several luffing support mechanisms. The first floating support mechanism includes a first base, a first adjusting block, and a first support block. The first base is fixed to the hull, the lower end of the first adjusting block is fixedly connected to the upper end of the first base, and the top of the first adjusting block has an arc-shaped... The first support block has a circular arc-shaped boss at its bottom, which is supported in the circular arc-shaped groove. The bottom center of the diesel engine load-bearing platform is supported on the step of the first support block. The luffing support mechanism includes a spring, a hydraulic cylinder, and a second floating support mechanism. The lower end of the spring is fixedly connected to the hull, the hydraulic cylinder is supported on the spring, and the upper end of the spring is fixedly connected to the bottom of the hydraulic cylinder. The oil inlets at the bottom of several hydraulic cylinders are respectively connected to the oil inlet constant pressure chamber, and the oil return ports on one side of several hydraulic cylinders are respectively connected to the oil return constant pressure chamber. The upper end of the hydraulic cylinder piston rod is floatingly connected to the bottom of the diesel engine load-bearing platform through the second floating support mechanism.

[0006] The objectives of this invention can also be further achieved through the following technical measures.

[0007] The aforementioned diesel engine mounting device for automatically compensating for hull tilt, wherein the upper outer circumference of the first adjusting block is evenly distributed with multiple radial adjusting holes.

[0008] The aforementioned diesel engine mounting device for automatically compensating for hull tilt, wherein the ratio of the radius of curvature R of the arc-shaped groove to the radius of curvature r of the arc-shaped boss is R / r = 2.8~3, and several oil grooves are evenly distributed along the circumference of the arc-shaped boss.

[0009] The aforementioned diesel engine mounting device for automatically compensating for hull tilt, wherein the second floating support mechanism has the same structure as the first floating support mechanism, including a second base, a second adjusting block, and a second support block. The second base is fixed on the top of the piston rod of the hydraulic cylinder, the lower end of the second adjusting block is fixedly connected to the upper end of the second base, the arc-shaped boss at the bottom of the second support block is supported in the arc-shaped groove at the top of the second adjusting block, and the bottom sides of the diesel engine load-bearing platform are respectively supported on the steps of several second support blocks.

[0010] The aforementioned diesel engine installation device for automatically compensating for hull tilting includes one-way valves on the oil inlet pipe and the oil return pipe.

[0011] This invention features a simple structure and low cost. When a ship lists, the oil in the hydraulic cylinder is replenished and released through the constant pressure inlet and outlet chambers, maintaining a constant oil pressure within the cylinder and ensuring the piston rod remains in its initial supported state. Simultaneously, since both the first and second support blocks can float within a certain range, the ship's list is automatically compensated, thus keeping the diesel engine support platform horizontally balanced. This invention allows the diesel engine to be arranged transversely along the ship, avoiding increased ship length, reducing tonnage, lowering operating costs, preventing diesel engine failures caused by listing, and reducing vibration.

[0012] The advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention;

[0014] Figure 2 yes Figure 1 Enlarged schematic diagram of Part I;

[0015] Figure 3 This is a schematic diagram of the structure of the ship in a starboard tilt state according to the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of the ship in the right tilt reset state according to the present invention. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1 and Figure 2 As shown, the present invention includes a diesel engine load-bearing platform 1, a first floating support mechanism 2, and four luffing support mechanisms 3. The first floating support mechanism 2 and the four luffing support mechanisms 3 are respectively vertically fixed on one side of the hull 4. The four luffing support mechanisms 3 are symmetrically arranged on both sides of the first floating support mechanism 2. The diesel engine load-bearing platform 1 is supported on the top of the first floating support mechanism 2 and the four luffing support mechanisms 3. The diesel engine load-bearing platform 1 is made of marine steel plate.

[0019] The first floating support mechanism 2 includes a first base 21, a first adjusting block 22, and a first support block 23. The first base 21 is welded and fixed to the hull 4. The lower end of the first adjusting block 22 is screwed onto the upper end of the first base 21. The top of the first adjusting block 22 is provided with an arc-shaped groove 24. The bottom of the first support block 23 is an arc-shaped boss 25, which is supported in the arc-shaped groove 24. The bottom center of the diesel engine load-bearing platform 1 is supported on the step of the first support block 23. The ratio of the radius of curvature R of the arc-shaped groove 24 to the radius of curvature r of the arc-shaped boss 25 is R / r = 2.8~3. In this embodiment, R / r = 2.98. This ratio can ensure that the first support block 23 deflects and floats within a 30° range within the first adjusting block 22. Four oil grooves 26 are also evenly distributed along the circumference of the arc-shaped boss 25 for lubrication between the contact surfaces of the arc-shaped boss 25 and the arc-shaped groove 24. Multiple radial adjustment holes 27 are evenly distributed on the upper outer circle of the first adjustment block 22. By inserting the lever into the radial adjustment hole 27 and rotating the first adjustment block 22, the support height of the first adjustment block 22 can be adjusted, thereby adjusting the preload of the spring 31.

[0020] The luffing support mechanism 3 is a spring-hydraulic damping type, including a spring 31, a hydraulic cylinder 32, and a second floating support mechanism 33. The lower end of the spring 31 is welded and fixed to the hull 4. The hydraulic cylinder 32 is supported on the spring 31, and the upper end of the spring 31 is welded and fixed to the bottom of the hydraulic cylinder 32. The oil inlets at the bottom of the four hydraulic cylinders 32 are respectively connected to the oil inlet constant pressure chamber 34, and the oil return ports on the right side of the four hydraulic cylinders 32 are respectively connected to the oil return constant pressure chamber 35. One-way valves 36 are provided on the oil inlet pipe and the oil return pipe to ensure that the hydraulic oil can only flow in one direction. The upper end of the hydraulic cylinder piston rod is floatingly connected to the bottom of the diesel engine load-bearing platform 1 through the second floating support mechanism 33.

[0021] The second floating support mechanism 33 has the same structure as the first floating support mechanism 2, including a second base 331, a second adjusting block 332, and a second support block 333. The second base 331 is welded and fixed to the top of the hydraulic cylinder piston rod. The lower end of the second adjusting block 332 is screwed onto the upper end of the second base 331. The arc-shaped boss at the bottom of the second support block 333 is supported in the arc-shaped groove at the top of the second adjusting block 332. The bottom sides of the diesel engine load-bearing platform 1 are respectively supported on the steps of the four second support blocks 333.

[0022] The working process of this invention is as follows:

[0023] Before the diesel engine starts, the hull is not heeling. At this time, the pressure in the inlet constant pressure chamber 24 and the return constant pressure chamber 35 is adjusted so that the pressure of the two chambers is equal to the supporting force of the spring 31, and the diesel engine load-bearing platform 1 is in a horizontal equilibrium state. Figure 3As shown, when hull 4 begins to list to starboard, the cylinder body of the port hydraulic cylinder 32 is compressed, increasing the pressure within it. Hydraulic oil flows back to the constant pressure return chamber 35, maintaining a constant pressure within the port hydraulic cylinder 32, thus keeping the port piston rod in a constant position. Simultaneously, the cylinder body of the right hydraulic cylinder 32 is stretched, decreasing the pressure within it. The constant pressure inlet chamber 34 replenishes hydraulic oil to the right hydraulic cylinder 32, maintaining a constant pressure within it, thus keeping the right piston rod in a constant position. During this process, the first and second support blocks only undergo slight angular deflection and floating. Thus, the supporting forces of the diesel engine load-bearing platform 1 remain unchanged, and the diesel engine load-bearing platform 1 remains horizontal. The flow direction of the hydraulic oil is as follows... Figure 3 As shown.

[0024] like Figure 4 As shown, when the hull 4 tilts to the right and returns to its original position, the cylinder body of the left hydraulic cylinder 32 is under tension, and the pressure inside the left hydraulic cylinder 32 decreases. The constant pressure inlet chamber 34 replenishes hydraulic oil to the left hydraulic cylinder 32, keeping the pressure inside the left hydraulic cylinder 32 constant, thus keeping the left piston rod in a constant position. At the same time, the cylinder body of the right hydraulic cylinder 32 is under pressure, and the pressure inside the right hydraulic cylinder 32 increases. The hydraulic oil flows back to the constant pressure return chamber 35, keeping the pressure inside the right hydraulic cylinder 32 constant, thus keeping the right piston rod in a constant position. The diesel engine load-bearing platform 1 remains horizontal. The hydraulic oil flow direction is as follows: Figure 4 As shown.

[0025] Similarly, when the hull 4 tilts to the left or returns to its original position, the diesel engine support platform 1 always remains horizontal. When the ship's tilt is small, the pressure in the inlet constant pressure chamber 34 and the return constant pressure chamber 35 can be shut off, thereby disabling the automatic compensation function of this invention. There is no pressure in each hydraulic cylinder, and the diesel engine support platform 1 is supported on the first floating support mechanism 2 and four springs 31.

[0026] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A diesel engine mounting device for automatically compensating for ship tilting, characterized in that: The system includes a diesel engine load-bearing platform, a first floating support mechanism, and several luffing support mechanisms. The first floating support mechanism and the several luffing support mechanisms are vertically fixed to one side of the hull. The several luffing support mechanisms are symmetrically arranged on both sides of the first floating support mechanism. The diesel engine load-bearing platform is supported on top of the first floating support mechanism and the several luffing support mechanisms. The first floating support mechanism includes a first base, a first adjusting block, and a first support block. The first base is fixed to the hull, the lower end of the first adjusting block is fixed to the upper end of the first base, and the top of the first adjusting block has an arc-shaped groove. The first support block... The bottom of the block is an arc-shaped boss, which is supported in the arc-shaped groove. The bottom center of the diesel engine load-bearing platform is supported on the step of the first support block. The luffing support mechanism includes a spring, a hydraulic cylinder, and a second floating support mechanism. The lower end of the spring is fixedly connected to the hull. The hydraulic cylinder is supported on the spring. The upper end of the spring is fixedly connected to the bottom of the hydraulic cylinder. The oil inlets at the bottom of several hydraulic cylinders are respectively connected to the oil inlet constant pressure chamber. The oil return ports on one side of several hydraulic cylinders are respectively connected to the oil return constant pressure chamber. The upper end of the hydraulic cylinder piston rod is floatingly connected to the bottom of the diesel engine load-bearing platform through the second floating support mechanism.

2. The diesel engine mounting device for automatically compensating for hull tilt as described in claim 1, characterized in that: Multiple radial adjustment holes are evenly distributed on the upper outer circumference of the first adjustment block.

3. The diesel engine mounting device for automatically compensating for hull tilt as described in claim 2, characterized in that: The ratio of the radius of curvature R of the arc-shaped groove to the radius of curvature r of the arc-shaped boss is R / r = 2.8~3. Several oil grooves are also evenly distributed along the circumference of the arc-shaped boss.

4. The diesel engine mounting device for automatically compensating for hull tilt as described in claim 3, characterized in that: The second floating support mechanism has the same structure as the first floating support mechanism, including a second base, a second adjusting block and a second support block. The second base is fixed on the top of the hydraulic cylinder piston rod. The lower end of the second adjusting block is fixed to the upper end of the second base. The arc-shaped boss at the bottom of the second support block is supported in the arc-shaped groove at the top of the second adjusting block. The bottom sides of the diesel engine load-bearing platform are respectively supported on the steps of several second support blocks.

5. The diesel engine mounting device for automatically compensating for hull tilt as described in claim 1, characterized in that: One-way valves are installed on the oil inlet pipe and the oil return pipe respectively.

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