A vibration-proof reinforcing device for a marine engine

Abstract

The utility model relates to a kind of marine steam turbine equipment's anti-vibration reinforcing device, including adjustable base and sleeve pipe reinforcing pipe assembly, adjustable base includes L type connecting seat and L type adjusting plate, sleeve pipe reinforcing pipe assembly includes ship body short pipe connecting piece, support anti-vibration pipe and equipment short pipe connecting piece;Two round holes are equipped on the steel plate of L type connecting seat, for bolt connection L type adjusting plate, another steel plate is used for welding on ship body structure;Two waist type holes are equipped on the steel plate of L type adjusting plate, cooperate bolt for adjusting the position of L type adjusting plate, the other end of connecting plate connects ship body short pipe connecting piece;Ship body short pipe connecting piece includes seamless sleeve pipe A, equipment short pipe connecting piece includes seamless sleeve pipe B, one end of support anti-vibration pipe is inserted into seamless sleeve pipe A, the other end is inserted into seamless sleeve pipe B.The utility model solves the problem of high rework rate and damage to ship coating of traditional reinforcing structure, realizes error self-adaptive installation and vibration transmission suppression, and improves installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, and in particular to a vibration damping and strengthening device for marine engine equipment. Background Technology

[0002] The engine room area of ​​a ship houses numerous pieces of equipment, which typically vibrate during navigation. Some vibrations are caused by the normal operation of the equipment itself, such as engine room pumps; others are caused by the resonance of the hull structure during main engine operation, such as plate coolers. To prevent equipment vibration and extend its service life, effective vibration damping measures are necessary. Currently, traditional marine equipment vibration damping structures have two major drawbacks: (1) Length cannot be adjusted: Due to equipment installation errors, the prefabricated reinforcing steel pipe is too long or too short, which makes it impossible to install the equipment reinforcement. The base or reinforcement needs to be cut off and the position readjusted. (2) Destructive installation: If the reinforcing steel pipe is installed after the equipment is in place, the welding base needs to be ground to remove the hull coating, which will damage the paint on the hull structure and cause corrosion risks.

[0003] Therefore, this utility model proposes a vibration damping and strengthening device for marine engine equipment, which achieves non-destructive and precise installation through the design of an adjustable base and a sleeve-type reinforcing tube. Summary of the Invention

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a vibration-damping reinforcement device for marine engine equipment, which can adaptively adjust the length and position to solve the problems of rework and damage to the hull coating caused by equipment installation errors.

[0005] The purpose of this utility model is achieved as follows: A vibration damping and strengthening device for marine engine equipment includes an adjustable base and a sleeve-type reinforcing tube assembly. The adjustable base includes an L-shaped connecting seat and an L-shaped adjusting plate arranged opposite each other. The sleeve-type reinforcing tube assembly includes a hull short tube connector, a vibration damping support tube, and an equipment short tube connector. The L-shaped connecting seat is an L-shaped angle steel formed by two vertically arranged steel plates. The L-shaped connecting seat has a reinforcing flat steel inside. One of the steel plates of the L-shaped connecting seat has two round holes for bolt connection. The other steel plate of the L-shaped connecting seat is used for welding to the hull structure. The L-shaped adjusting plate is an L-shaped angle steel formed by two vertically arranged steel plates. The L-shaped adjusting plate has a connecting plate inside. The steel plate of the L-shaped adjusting plate has two waist-shaped holes, which are used to adjust the position of the L-shaped adjusting plate with bolts. The bolts pass through the waist-shaped holes and the round holes, and the horizontal position is adjusted by the misalignment of the holes. The other end of the connecting plate has a connecting hole for connecting the short pipe connector of the hull. The hull short pipe connector includes a seamless sleeve A, a connecting circular plate A, and a connecting clamping plate A. One side of the connecting circular plate A is perpendicularly connected to the connecting clamping plate A, and the other side is connected to one end of the seamless sleeve A. The equipment short pipe connector includes a seamless sleeve B, a connecting circular plate B, and a connecting clamping plate B. One side of the connecting circular plate B is perpendicularly connected to the connecting clamping plate B, and the other side is connected to one end of the seamless sleeve B. One end of the support vibration damping pipe is inserted into the seamless sleeve A, and the other end is inserted into the seamless sleeve B.

[0006] Furthermore, the reinforcing flat steel is vertically arranged within the included angle of the L-shaped angle steel of the L-shaped connecting seat, and two adjacent sides of the reinforcing flat steel are respectively vertically connected to the two steel plates of the L-shaped connecting seat. The other two adjacent sides of the reinforcing flat steel do not extend beyond the edges of the two steel plates of the L-shaped connecting seat.

[0007] Furthermore, the diameter of the circular hole is 18mm, and the size of the oblong hole is 60×18mm.

[0008] Furthermore, the connecting plate is vertically arranged within the included angle of the L-shaped angle steel of the L-shaped adjusting plate, one end of the connecting plate is fixed to a steel plate of the L-shaped adjusting plate, and the other end of the connecting plate extends out of the L-shaped adjusting plate.

[0009] Furthermore, the connecting plate A is provided with connecting holes for connecting to the connecting plate of the L-shaped adjusting plate by bolts.

[0010] Furthermore, the connecting plate B is provided with connecting holes for connecting to the turbine equipment via bolts.

[0011] Furthermore, the outer diameter of the seamless sleeve A and the seamless sleeve B is 60mm and the inner diameter is 52mm, and the outer diameter of the supporting vibration damping tube is 48mm.

[0012] Furthermore, the inner walls of the seamless sleeve A and seamless sleeve B are machined with annular grooves and filled with salt spray resistant sealant to prevent seawater from seeping in.

[0013] Furthermore, a flame-retardant rubber pad is bonded to the contact surface between the connecting plate A and the hull, and a flame-retardant rubber pad is bonded to the contact surface between the connecting plate B and the engine equipment to reduce resonance transmission efficiency.

[0014] Furthermore, the edge of the waist-shaped hole of the L-shaped adjustment plate is laser-engraved with spacing scale, which, together with the scale bolt, enables quantitative adjustment.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a vibration damping and strengthening device for marine engine equipment. Through the core design of an adjustable base (round hole + oblong hole) and a sleeve-type reinforcing tube (spot welding to full welding), it solves the problems of high rework rates and damage to the hull coating associated with traditional reinforcement structures. It achieves error-adaptive installation and vibration transmission suppression, improving installation efficiency and offering the following specific advantages: (1) Improved installation fault tolerance The length of the sleeve-type reinforcing tube assembly of this utility model is adjustable, with an adjustment range of L1~L2. See [reference needed]. Figure 8 The coverage area has an installation error of ±50mm, greatly reducing the rework rate; (2) Zero damage to hull coating The adjustable base of this invention is pre-welded in sections and connected by detachable bolts to avoid the need for hot work later. (3) Improved ease of maintenance: The vibration damping support tube of this invention can be replaced as a whole after the bolts are removed, thus improving maintenance efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram illustrating the application of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the L-shaped connector of this utility model.

[0019] Figure 4 This is a front view of the L-shaped connector of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the L-shaped adjustment plate of this utility model.

[0021] Figure 6 This is a front view of the L-shaped adjustment plate of this utility model.

[0022] Figure 7 This is a schematic diagram illustrating the adjustment of the adjustable base of this utility model.

[0023] Figure 8 This is a schematic diagram of the structure of the sleeve-type reinforcing tube assembly of this utility model.

[0024] Figure 9 This is a structural schematic diagram of the short pipe connector for the hull of this utility model.

[0025] Figure 10 This is a schematic diagram of the structure of the equipment short pipe connector of this utility model.

[0026] in: 1. L-shaped connector, 1.1 reinforcing flat steel, 1.2 round hole, 2. L-shaped adjusting plate, 2.1 connecting plate, 2.2 waist-shaped hole, 3. hull short pipe connector, 3.1 seamless sleeve, 3.2 connecting round plate, 3.3 connecting clamping plate, 4. support vibration damping pipe, 5. seamless sleeve, 5.1 connecting round plate, 5.2 connecting clamping plate, 5.3 connecting clamping plate. Detailed Implementation

[0027] To better understand the technical solution of this utility model, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of this utility model, but are merely possible implementations of the technical solution of this utility model. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components. Example

[0028] See Figure 1-10 , Figure 1 A structural schematic diagram of a vibration damping and strengthening device for marine engine equipment according to Embodiment 1 is shown. As shown in the figure, the vibration damping and strengthening device for marine engine equipment according to Embodiment 1 includes an adjustable base and a sleeve-type strengthening tube assembly. The adjustable base includes an L-shaped connecting seat 1 and an L-shaped adjusting plate 2 arranged opposite to each other. The sleeve-type strengthening tube assembly includes a hull short tube connector 3, a support vibration damping tube 4, and an equipment short tube connector 5.

[0029] The L-shaped connecting seat 1 is an L-shaped angle steel formed by two vertically arranged steel plates integrally. The L-shaped connecting seat 1 has a reinforcing flat steel 1.1 inside. The reinforcing flat steel 1.1 is vertically arranged within the included angle of the L-shaped angle steel of the L-shaped connecting seat 1. The two adjacent sides of the reinforcing flat steel 1.1 are respectively perpendicularly connected to the two steel plates of the L-shaped connecting seat 1. The other two adjacent sides of the reinforcing flat steel 1.1 do not extend beyond the edges of the two steel plates of the L-shaped connecting seat 1. One steel plate of the L-shaped connecting seat 1 has two round holes 1.2 for bolt connection. The diameter of the round holes 1.2 is 18mm. The other steel plate of the L-shaped connecting seat 1 is used for welding to the hull structure and is pre-welded to the hull.

[0030] The L-shaped adjusting plate 2 is an L-shaped angle steel formed by two vertically arranged steel plates. The L-shaped adjusting plate 2 has a connecting plate 2.1 inside. The connecting plate 2.1 is vertically arranged within the included angle of the L-shaped angle steel of the L-shaped adjusting plate 2. One end of the connecting plate 2.1 is fixed to one of the steel plates of the L-shaped adjusting plate 2. The steel plate of the L-shaped adjusting plate 2 has two waist-shaped holes 2.2. Bolts are used to adjust the position of the L-shaped adjusting plate 2. The waist-shaped holes 2.2 are 60×18mm in size. The bolts pass through the waist-shaped holes and the round holes. The horizontal position adjustment of ±30mm can be achieved by the hole position shift. The other end of the connecting plate 2.1 extends out of the L-shaped adjusting plate 2. The end of the extended end has a connecting hole for connecting the hull short pipe connector 3.

[0031] The hull short pipe connector 3 includes a seamless sleeve A3.1, a connecting circular plate A3.2, and a connecting clamping plate A3.3. One side of the connecting circular plate A3.2 is perpendicularly connected to the connecting clamping plate A3.3, and the other side is connected to one end of the seamless sleeve A3.1. The connecting clamping plate A3.3 is provided with a connecting hole for connecting to the connecting plate 2.1 of the L-shaped adjusting plate 2 by bolts. The equipment short pipe connector 5 includes a seamless sleeve B5.1, a connecting circular plate B5.2, and a connecting clamping plate B5.3. One side of the connecting circular plate B5.2 is perpendicularly connected to the connecting clamping plate B5.3, and the other side is connected to one end of the seamless sleeve B5.1. The connecting clamping plate B5.3 is provided with a connecting hole for connecting to the turbine equipment by bolts.

[0032] One end of the support vibration damping tube 4 is inserted into the seamless sleeve A3.1, and the other end is inserted into the seamless sleeve B5.1. The outer diameter of the seamless sleeve A3.1 and the seamless sleeve B5.1 is 60mm, the inner diameter is 52mm, and the outer diameter of the support vibration damping tube 4 is 48mm.

[0033] The installation process of the support vibration damping tube 4 is as follows: spot welding for initial fixation → adjusting the length L (L1~L2 range) → full welding for final locking.

[0034] See Figure 8 The length L of the support anti-vibration tube 4 can be between the minimum L1 and the maximum L2. Within this range, the support anti-vibration tube 4 can be welded and installed normally. The entire sleeve-type reinforcing tube assembly can be disassembled through the bolt holes at both ends, which facilitates subsequent maintenance operations.

[0035] In this embodiment, the inner walls of the seamless sleeve A3.1 and seamless sleeve B5.1 are machined with annular grooves (2mm deep × 3mm wide) and filled with salt spray resistant sealant (such as polysulfide) to prevent seawater from seeping in.

[0036] In this embodiment, the connecting plate A3.3 and the connecting plate B5.3 are bonded with flame-retardant rubber pads (Shore hardness 70±5) to the contact surface of the equipment / hull to reduce the resonance transmission efficiency.

[0037] In this embodiment, the edge of the waist-shaped hole 2.2 of the L-shaped adjustment plate 2 is laser-engraved with spacing scale (one division every 5mm), and with the scale bolt (accuracy ±1mm), quantitative adjustment is achieved.

[0038] Working principle: This utility model discloses a vibration damping and strengthening device for marine engine equipment, the operation process of which is as follows: (1) Pre-installation stage: During the segmented construction, the L-shaped connecting seat 1 is welded to the hull and protected after the coating is applied. (2) After the equipment is in place: Adjust the position of L-shaped adjustment plate 2 via the oblong hole (scale assistance), and lock it with bolts; Insert the support vibration damping pipe 4 into the sleeve of the hull short pipe connector 3 and the equipment short pipe connector 5, and adjust the length to the target value L; (3) Final fixation: Spot welding for temporary fixation → Vibration transmission rate testing → Full welding and sealing (filling the glue tank with glue). (4) Maintenance operations: Remove bolts → Replace the entire reinforcing tube assembly → Relock.

[0039] This utility model discloses a vibration damping and strengthening device for marine engine equipment. The device achieves left-right position adjustment through the combination of round and oblong holes, and the base can be pre-installed in sections without damaging the paint. The strengthening length is adjustable through a sleeve-type connection; the actual length is determined before welding and fixing. This allows for precise installation in one go even with installation errors, avoiding rework caused by installation errors. This design has been widely used on ships under construction in our factory, and its effectiveness has been verified by actual construction, demonstrating significant application and promotion value.

[0040] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A vibration damping and strengthening device for marine engine equipment, characterized in that: It includes an adjustable base and a sleeve-type reinforcing tube assembly. The adjustable base includes an L-shaped connecting seat (1) and an L-shaped adjusting plate (2) arranged opposite to each other. The sleeve-type reinforcing tube assembly includes a hull short tube connector (3), a support vibration damping tube (4), and an equipment short tube connector (5). The L-shaped connecting seat (1) is an L-shaped angle steel integrally formed from two vertically arranged steel plates. The L-shaped connecting seat (1) has a reinforcing flat steel (1.1) inside. One of the steel plates of the L-shaped connecting seat (1) has two round holes (1.2) for bolt connection. The other steel plate of the L-shaped connecting seat (1) is used for welding to the hull structure. The L-shaped adjusting plate (2) is an L-shaped angle steel formed by two vertically arranged steel plates. The L-shaped adjusting plate (2) has a connecting plate (2.1) inside. The steel plate of the L-shaped adjusting plate (2) has two waist-shaped holes (2.2), which are used with bolts to adjust the position of the L-shaped adjusting plate (2). The bolts pass through the waist-shaped holes and the round holes, and the horizontal position is adjusted by the hole displacement. The other end of the connecting plate (2.1) has a connecting hole for connecting the hull short pipe connector (3). The hull short pipe connector (3) includes a seamless sleeve A (3.1), a connecting circular plate A (3.2), and a connecting clamping plate A (3.3). One side of the connecting circular plate A (3.2) is perpendicularly connected to the connecting clamping plate A (3.3), and the other side is connected to one end of the seamless sleeve A (3.1). The equipment short pipe connector (5) includes a seamless sleeve B (5.1), a connecting circular plate B (5.2), and a connecting clamping plate B (5.3). One side of the connecting circular plate B (5.2) is perpendicularly connected to the connecting clamping plate B (5.3), and the other side is connected to one end of the seamless sleeve B (5.1). One end of the support vibration damping pipe (4) is inserted into the seamless sleeve A (3.1), and the other end is inserted into the seamless sleeve B (5.1).

2. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The reinforcing flat steel (1.1) is vertically arranged within the angle of the L-shaped angle steel of the L-shaped connecting seat (1). The two adjacent sides of the reinforcing flat steel (1.1) are respectively vertically connected to the two steel plates of the L-shaped connecting seat (1). The other two adjacent sides of the reinforcing flat steel (1.1) do not extend beyond the edges of the two steel plates of the L-shaped connecting seat (1).

3. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The diameter of the round hole (1.2) is 18mm, and the size of the waist-shaped hole (2.2) is 60×18mm.

4. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The connecting plate (2.1) is vertically set within the angle of the L-shaped angle steel of the L-shaped adjusting plate (2). One end of the connecting plate (2.1) is fixed to a steel plate of the L-shaped adjusting plate (2), and the other end of the connecting plate (2.1) extends out of the L-shaped adjusting plate (2).

5. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The connecting plate A (3.3) is provided with a connecting hole for connecting to the connecting plate (2.1) of the L-shaped adjusting plate (2) by means of bolts.

6. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The connecting plate B (5.3) is provided with connecting holes for connecting to the turbine equipment by bolts.

7. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The outer diameter of the seamless sleeve A (3.1) and the seamless sleeve B (5.1) is 60 mm and the inner diameter is 52 mm, and the outer diameter of the support vibration damping tube (4) is 48 mm.

8. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The inner walls of the seamless sleeve A (3.1) and seamless sleeve B (5.1) are machined with annular grooves and filled with salt spray resistant sealant to prevent seawater from seeping in.

9. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The connecting plate A (3.3) has a flame-retardant rubber pad bonded to the hull contact surface, and the connecting plate B (5.3) has a flame-retardant rubber pad bonded to the engine equipment contact surface to reduce resonance transmission efficiency.

10. The vibration damping and strengthening device for marine engine equipment according to claim 1, characterized in that: The L-shaped adjustment plate (2) has laser-engraved spacing scales on the edge of the waist-shaped hole (2.2), which, together with the scale bolt, enables quantitative adjustment.

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