Anti-collision buffering device for stem post

Abstract

The utility model provides an anti-collision buffering device for a stem post, which belongs to the technical field of buffering devices and comprises a buffering body, a support frame, a connecting piece and a damping component. The buffer body is designed into a conical surface, and a plurality of spaced annular grooves are formed in the outer surface of the buffer body; the supporting frame is fixedly installed at the bottom of the stem column and used for supporting the buffering body. The connecting piece is arranged between the buffering body and the supporting frame and comprises a metal flange plate and a rubber pad, the metal flange plate is fixedly connected with the buffering body and the supporting frame through bolts, and the rubber pad is arranged at the joint of the metal flange plate and the buffering body; the damping assembly is installed in the buffering body and comprises an elastic ring and a limiting column, the cross section of the elastic ring is designed to be in a wave shape, the elastic ring is arranged outside the limiting column in a sleeving mode and used for absorbing impact impact force borne by a ship, and the defect that a traditional stem post anti-collision buffering mode is limited in buffering effect on large-energy impact is overcome.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of buffer device, more particularly to a ship bow column anti -collision buffer device. BACKGROUND

[0002] In the navigation and operation process of the ship, the ship bow column as the most front end structural component of the ship is extremely vulnerable to various collision risks. Whether it is in the narrow channel and other ships, or in the impact of the wharf facilities when berthing, or in the impact of the floating object in the complex sea conditions, the ship bow column is the first to be hit. Once the ship bow column is damaged by serious impact, not only the appearance and water tightness of the ship will be affected, but also the structural strength of the ship may be reduced, which endangers the navigation safety of the ship and causes huge economic losses and potential personnel casualty risks. Therefore, the ship bow column anti-collision buffer becomes a crucial research direction in the field of ship safety.

[0003] The traditional ship bow column anti-collision buffer method has many drawbacks. Early ships mostly used the way of thickening the thickness of the ship bow column steel plate to improve the anti-collision ability. However, simply increasing the thickness of the steel plate not only greatly increases the weight of the ship, leading to the increase of the energy consumption of the ship and the reduction of fuel economy, but also the buffering effect of this way is very limited for the impact of larger energy. When subjected to strong impact, the huge impact force will still be directly transmitted to the ship bow column and the main structure of the ship, causing structural deformation or even rupture. Later, some ships began to use rubber fender as the ship bow column anti-collision buffer device. Although the rubber fender can absorb part of the impact energy to a certain extent, its performance is greatly limited by the characteristics of the rubber material. Long-term exposure to harsh marine environment, the rubber is easy to age and wear, leading to a sharp decline in its buffering performance. Moreover, the installation method of the rubber fender is relatively simple, and when facing complex impact angles and high strength impact, it is difficult to ensure that it can always effectively play a buffering role, and the protection effect on the ship bow column is unstable. Some ships also use air bag type anti-collision buffer device. This device can provide a certain buffering force in the inflated state, but the sealing requirement of the air bag is very high, and under the frequent rolling of the ship and the corrosion of seawater, the air bag is easy to leak. Once the air bag leaks, its buffering function will be greatly reduced. In addition, the maintenance and replacement cost of the air bag type device is high, and the maintenance difficulty is great, which also faces many challenges in actual application. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a ship bow column anti-collision buffer device, which solves the problem of limited buffering effect of the traditional ship bow column anti-collision buffer method for the impact of larger energy.

[0005] The utility model is implemented as follows:

[0006] The utility model provides a kind of bow column anti-collision buffer device, wherein, including: buffer body, support frame, connecting piece and damping assembly;The buffer body is conical surface design, and its outer surface is provided with multiple interval annular grooves;The support frame is fixedly installed at the bottom of bow column, for supporting buffer body;The connecting piece is arranged between buffer body and support frame, and connecting piece includes metal flange and rubber pad, metal flange is fixedly connected buffer body and support frame by bolt, and rubber pad is arranged at the connecting place of metal flange and buffer body;The damping assembly is installed inside buffer body, and damping assembly includes elastic ring and limiting column, the cross section of elastic ring is wave-shaped design, and elastic ring is externally sleeved in limiting column, for absorbing the impact force that ship receives.

[0007] The technical effects of the bow column anti-collision buffer device are as follows: by arranging the buffer body with a specific shape, the support frame, the connecting piece and the damping assembly in the bow column anti-collision buffer device, the impact energy can be effectively dispersed and absorbed when the ship is impacted, and the anti-impact performance of the ship body is significantly improved. The conical surface design and the annular groove structure of the buffer body can uniformly distribute the impact force, reduce local stress concentration, and effectively protect the safety of the ship body structure.

[0008] Based on the above technical solution, the bow column anti-collision buffer device of the utility model can be further improved as follows:

[0009] The support frame is formed by stamping a steel plate, and the bottom of the support frame is provided with reinforcing ribs that are distributed in a radial pattern to improve the overall load-bearing strength of the support frame.

[0010] The beneficial effects of the above improvement scheme are as follows: by using a support frame formed by stamping a steel plate and arranging reinforcing ribs in a radial pattern at the bottom, the overall load-bearing strength and stability of the support frame are significantly improved. The design of the reinforcing ribs can effectively transmit and disperse the external forces acting on the bow column anti-collision buffer device, enhance the structural rigidity and anti-deformation ability of the device, and further ensure the safety of the ship body.

[0011] Further, the taper angle of the buffer body is 30 to 45 degrees to optimize the stress distribution of the buffer body.

[0012] The taper angle can be designed and adjusted according to the stress characteristics of the ship. By carefully designing the taper angle of the buffer body, the stress distribution of the buffer body can be personalized adjusted according to the stress characteristics of different ships. The angle range of 30 to 45 degrees can minimize the stress concentration at the moment of impact, reduce the risk of local damage to the ship structure, and improve the anti-impact performance of the ship in complex sea conditions.

[0013] Further, the depth of the annular groove is 1 / 10 to 1 / 8 of the diameter of the buffer body, and the inner wall of the groove is designed with an arc chamfer for enhancing the crack resistance of the buffer body.

[0014] The beneficial effects of the above improvement scheme are that the special design of the annular groove can significantly enhance the crack resistance of the buffer body. The groove depth is controlled at 1 / 10 to 1 / 8 of the diameter of the buffer body, and the arc chamfer design can effectively disperse stress, prevent crack generation and propagation, and improve the structural integrity and service life of the buffer body.

[0015] Further, the metal flange of the connecting piece is made of stainless steel material and connected by bolts with uniform spacing.

[0016] The thickness of the flange is 10 to 15 mm, the metal flange is made of stainless steel material, and is connected by high-strength bolts, which significantly improves the corrosion resistance and connection strength of the connecting piece. Precise control of the thickness of the flange can ensure stable connection between the buffer body and the support frame, reduce stress concentration at the connection, and enhance the reliability of the overall device.

[0017] Further, the rubber pad is made of nitrile rubber material to reduce stress concentration between the metal flange and the buffer body.

[0018] The nitrile rubber material has a hardness of 60 to 70 degrees and a thickness of 5 to 8 mm. The rubber pad is made of nitrile rubber material and the hardness and thickness are precisely controlled, which can effectively reduce the stress concentration between the metal flange and the buffer body. The rubber pad plays a role in buffering and shock absorption, reducing local stress at the connection, and improving the fatigue life and use reliability of the device.

[0019] Further, the outer surface of the buffer body is provided with a plurality of spaced annular grooves, and the number of grooves is 3 to 5.

[0020] The beneficial effects of the above improvement scheme are that 3 to 5 spaced annular grooves are provided on the outer surface of the buffer body, which can further optimize the distribution and transmission of impact force. The presence of multiple grooves increases the deformation space of the buffer body, improves the adaptability of the device to different directions and sizes of impact, and enhances the shock absorption performance of the bow collision buffer device.

[0021] Further, the elastic ring of the shock absorption assembly has a wave-shaped cross section, and the wave peak height is 2 to 4 mm.

[0022] The beneficial effect of the improved scheme is that the wave-shaped cross section of the elastic ring in the shock-absorbing assembly can significantly improve the ability to absorb and dissipate impact energy.

[0023] Further, the material of the limiting column is high-strength aluminum alloy, and the surface of the limiting column is subjected to surface hardening treatment.

[0024] The beneficial effect of the improved scheme is that the limiting column is made of high-strength aluminum alloy and subjected to surface hardening treatment, which can significantly improve the strength and wear resistance of the limiting column.

[0025] Further, the fitting gap between the elastic ring and the limiting column is 0.2 to 0.5 mm.

[0026] The beneficial effect of the improved scheme is that the fitting gap between the elastic ring and the limiting column is accurately controlled, which can optimize the motion characteristics of the shock-absorbing assembly.

[0027] Compared with the prior art, the beneficial effect of the ship bow column anti-collision buffer device provided by the utility model is:

[0028] Significantly improve the anti-collision buffer performance: through the synergistic effect of the buffer body designed with a conical taper, the annular groove, the wave-shaped elastic ring and other structures, the impact force received by the ship can be efficiently absorbed and dispersed, compared with the traditional anti-collision buffer device, the protection ability of the ship bow column is greatly improved, and the damage degree of the ship in the collision accident is effectively reduced.

[0029] Enhance the structural stability and reliability: the reinforcing rib design of the support frame and the firm connection mode of the connecting piece ensure that the whole device can be stably installed at the bottom of the ship bow column during the navigation of the ship, and can reliably work even in severe sea conditions, and is not prone to loosening or damage phenomenon;

[0030] Improve the material durability: the metal flange plate made of stainless steel material, the rubber pad made of nitrile rubber material, and the limiting column made of high-strength aluminum alloy are selected, these materials have good corrosion resistance and wear resistance, can adapt to long-term marine environment, reduce the maintenance and replacement frequency of the device, and reduce the operating cost;

[0031] Optimize stress distribution: the taper angle of the buffer body can be designed according to the stress characteristics of the ship, and the depth and number of the annular grooves and the cooperation gap of the elastic ring and the limiting column are carefully designed, so that the whole device can realize the optimized stress distribution under various impact conditions, and fully play the performance advantages of each component.

[0032] Reduce stress concentration: the setting of the rubber pad and the arc chamfer design of the groove effectively reduce the stress of the connecting part and the stress concentration part, improve the overall fatigue resistance of the device, and prolong the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0034] Fig. 1 It is a kind of bow stem anti-collision buffer device example drawing;

[0035] Fig. 2 It is a kind of bow stem anti-collision buffer device bottom view;

[0036] Fig. 3 It is a kind of bow stem anti-collision buffer device section view;

[0037] In the drawings, the component list represented by each sign is as follows:

[0038] 10, buffer body;20, support frame;30, connecting piece;40, shock absorbing assembly;41, elastic ring;42, limiting column. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0040] For example, Figs. 1-3The utility model provides a kind of bow column anti-collision buffer device, and the utility model discloses a kind of bow column anti-collision buffer device, including: buffer body 10, support frame 20, connecting piece 30 and shock-absorbing component 40;Buffer body 10 is conical surface design, its outer surface is equipped with multiple interval annular grooves;Support frame 20 is fixedly installed at bow column bottom, for supporting buffer body;Connecting piece 30 is arranged between buffer body 10 and support frame 20, connecting piece 30 includes metal flange and rubber pad, metal flange is fixedly connected buffer body and support frame by bolt, and rubber pad is arranged at the junction of metal flange and buffer body;Shock-absorbing component 40 is installed inside buffer body, and shock-absorbing component 40 includes elastic ring 41 and limiting column 42, the cross section of elastic ring 41 is wave-shaped design, elastic ring 41 is set outside limiting column 42, for absorbing the impact force that ship receives.

[0041] Wherein, in the above technical scheme, support frame 20 is formed by stamping from steel plate, the bottom of support frame 20 is provided with reinforcing rib, and the reinforcing rib is distributed in a radial manner to improve the overall load-bearing strength of the support frame.

[0042] Further, in the above technical scheme, the taper angle of buffer body 10 is 30 to 45 degrees, to optimize the stress distribution of buffer body.

[0043] Further, in the above technical scheme, the depth of annular groove is 1 / 10 to 1 / 8 of the diameter of buffer body, and the inner wall of groove is arc chamfer design, to enhance the crack resistance of buffer body.

[0044] Further, in the above technical scheme, the metal flange of connecting piece 30 is made of stainless steel material, connected by bolt, and the bolt spacing is uniformly distributed.

[0045] Further, in the above technical scheme, the rubber pad is made of nitrile rubber material, to reduce the stress concentration between metal flange and buffer body.

[0046] Further, in the above technical scheme, the outer surface of buffer body 10 is provided with multiple interval annular grooves, and the number of grooves is 3 to 5.

[0047] Further, in the above technical scheme, the cross section of elastic ring of shock-absorbing component 40 is wave-shaped design, and the wave peak height of wave is 2 to 4 mm.

[0048] Further, in the above technical scheme, the material of limiting column 42 is high-strength aluminum alloy, and the surface of limiting column is subjected to surface hardening treatment.

[0049] Further, in the above technical scheme, the fitting gap between elastic ring 41 and limiting column 42 is 0.2 to 0.5 mm.

[0050] The limiting column is in a relatively central position inside the conical buffer body. Since the elastic ring is arranged outside the limiting column and the shock absorbing assembly needs to effectively absorb shock in the buffer body, the central position of the limiting column can ensure that the deformation of the elastic ring in all directions is relatively uniform, thereby better absorbing impact forces from different angles. From the perspective of the conical structure, the central position can coincide or substantially coincide with the axis of the cone, so that the layout of the entire shock absorbing assembly in the buffer body is more symmetrical and reasonable. The height of the limiting column is slightly lower than the height of the buffer body. This is because the buffer body will deform to a certain extent when impacted, and if the limiting column is too high, it may excessively constrain the internal structure of the buffer body during deformation, affecting the effect of the buffer body in absorbing impact energy. The slightly lower height ensures that the elastic ring has sufficient space to fully compress and deform on the limiting column to absorb impact forces, and also ensures that the elastic ring can effectively absorb shocks within the entire height range of the buffer body.

[0051] Specifically, the principle of the utility model is: the ship bow column anti-collision buffer device of the utility model realizes efficient anti-collision buffering function based on unique structure design and material properties:

[0052] The buffer body is designed as a conical surface, which can effectively disperse impact forces. When impacted, the conical surface can guide the impact force to spread around, avoiding excessive local stress caused by concentration in one point. The plurality of spaced annular grooves formed on the outer surface can deform to a certain extent when impacted, absorbing part of the energy and playing a preliminary buffering role. In addition, the inner wall of the groove is designed as an arc chamfer, which can effectively reduce stress concentration points and enhance the crack resistance of the buffer body to prevent cracks from appearing under repeated impact;

[0053] The support frame is fixedly installed at the bottom of the ship bow column and provides stable support for the buffer body. The support frame, which is formed by stamping a steel plate and provided with radial reinforcing ribs at the bottom, greatly improves the overall bearing strength and ensures that it will not easily deform or be damaged when bearing impact forces, thereby continuously providing a reliable support foundation for the buffer body;

[0054] The metal flange in the connecting piece is made of stainless steel material and connects the buffer body and the support frame at uniform intervals through high-strength bolts, ensuring the firmness and stability of the connection. The rubber pad is made of nitrile rubber material, which has a specific hardness and thickness and can effectively reduce stress concentration between the metal flange and the buffer body, making the connection between the two more compact and flexible, further improving the buffering effect;

[0055] The shock absorbing assembly is installed inside the buffer body, the cross section of the elastic ring is designed in a wavy shape, when subjected to impact force, the wavy elastic ring can absorb a large amount of energy through its compression and deformation. The limiting column sleeved inside the elastic ring is made of high-strength aluminum alloy and the surface is subjected to hardening treatment, which not only provides support for the elastic ring and prevents the elastic ring from excessive deformation, but also through the specific matching gap between the elastic ring, while ensuring that the elastic ring can deform freely, limits the deformation range, so that the elastic ring is always in the best buffer working state.

Claims

1. A bow collision cushioning device, characterized by The utility model relates to a buffer body, support frame, connecting piece and shock absorption assembly, and the buffer body is conical in design, and a plurality of annular grooves are formed on the outer surface of the buffer body; the support frame is fixedly installed at the bottom of the bow stem and used for supporting the buffer body; the connecting piece is arranged between the buffer body and the support frame and comprises a metal flange and a rubber pad; the metal flange is fixedly connected with the buffer body and the support frame through bolts; and the rubber pad is arranged at the connecting position of the metal flange and the buffer body; the shock absorption assembly is installed inside the buffer body and comprises an elastic ring and a limiting column; the cross section of the elastic ring is wavy in design; the elastic ring is sleeved outside the limiting column and used for absorbing the impact force received by the ship. The support frame is formed by stamping a steel plate, and reinforcing ribs are arranged at the bottom of the support frame and distributed in a radial manner to improve the overall bearing strength of the support frame.

2. A bow collision cushioning device according to claim 1, characterized in that The taper angle of the buffer body is 30-45 degrees to optimize the stress distribution of the buffer body.

3. A bow collision cushioning device according to claim 2, characterized in that The depth of the annular grooves is 1 / 10-1 / 8 of the diameter of the buffer body, and the inner wall of the grooves is arc chamfered to enhance the crack resistance of the buffer body.

4. A bow collision cushioning device according to claim 3, characterized in that The metal flange of the connecting piece is made of stainless steel and connected through bolts, and the bolts are uniformly distributed.

5. A bow collision cushioning device according to claim 4, characterized in that The rubber pad is made of nitrile rubber to reduce the stress concentration between the metal flange and the buffer body.

6. A bow collision cushioning device according to claim 5, characterized in that The outer surface of the buffer body is provided with a plurality of annular grooves, and the number of the grooves is 3-5.

7. A bow collision cushioning device according to claim 6, characterized in that The cross section of the elastic ring of the shock absorption assembly is wavy in design, and the height of the wave crest is 2-4 mm.

8. A bow collision cushioning device according to claim 7, characterized in that The limiting column is made of high-strength aluminum alloy, and the surface of the limiting column is subjected to surface hardening treatment.

9. A bow collision cushioning device according to claim 8, characterized in that The fitting gap between the elastic ring and the limiting column is 0.2-0.5 mm.

10. A bow collision cushioning device according to claim 9, characterized in that ​

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