Passive net damping energy dissipation type stand

Abstract

The utility model discloses a passive net damping energy dissipation type stand column, including the cylinder and first energy dissipation device, the cylinder is cylindrical structure, first energy dissipation device is provided with at least one, first energy dissipation device rotatablely cover the cylinder, and first energy dissipation device can take place radial elastic deformation, a plurality of first connecting pieces for the protection net connection are arranged on the first energy dissipation device and are spaced apart in the circumference.

Description

Technical Field

[0001] This utility model relates to the field of slope protection engineering technology, specifically to a passive mesh damping energy-dissipating column. Background Technology

[0002] In slope protection engineering, passive protection netting systems are crucial for preventing rockfall hazards. Traditional protection systems with column structures primarily suffer from the following technical problems: 1. Insufficient energy absorption capacity: Traditional columns are mostly rigid structures. When falling rocks impact the protective net, the impact force is directly transmitted to the main body of the column, which can easily cause the column to bend, deform, tilt, or even break.

[0003] 2. Single impact direction resistance: Existing column structures have poor adaptability to multi-directional impacts, especially oblique impacts, which can easily cause stress concentration, leading to damage such as column collapse.

[0004] 3. Connection stability issues: The connection points between the protective netting and the columns are usually fixed. After long-term impact, the column foundation is prone to deformation and damage, affecting the protective effect.

[0005] 4. Simple energy dissipation mechanism: Existing technologies lack effective graded energy dissipation mechanisms, and the protective energy level is greatly affected by the stability of the pillar, making it difficult to effectively cope with high-energy-level rockfall impacts. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a passive mesh damping energy dissipation column that can dissipate impact energy and thus control damage to the column and its foundation.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a passive mesh damping energy-dissipating column, comprising: A column, wherein the column has a cylindrical structure; At least one first energy dissipation device is provided. The first energy dissipation device is rotatably sleeved on the column and can undergo radial elastic deformation. The first energy dissipation device is provided with a plurality of first connectors for connecting the protective net at circumferential intervals.

[0008] Furthermore, the first energy-consuming device includes a sleeve, an intermediate connector, and a plurality of first elastic damping rods. There are two sleeves, which are rotatably fitted onto the column at intervals. The intermediate connector is located between the two sleeves. The plurality of first elastic damping rods are arranged in a radial star shape. The proximal end of the first elastic damping rod is fixedly connected to the intermediate connector, and the distal end extends outward. The distal ends of two of the first elastic damping rods located at both ends of the axial direction are fixedly connected to the two sleeves respectively, and the distal ends of the remaining first elastic damping rods are provided with a first connector.

[0009] Furthermore, the first energy dissipation device also includes a connecting rod, with each pair of adjacent first elastic damping rods connected at their distal ends by one of the connecting rods.

[0010] Furthermore, it also includes a second energy dissipation device, at least one of which is provided. The second energy dissipation device is fixed to the column and is capable of radial elastic deformation. The second energy dissipation device is provided with multiple second connectors for connecting the protective net at circumferential intervals.

[0011] Furthermore, the second energy-consuming device includes a fixed connector and a plurality of second elastic damping elements. The fixed connector is fixedly connected to the column. There are a plurality of second elastic damping elements, which are circumferentially spaced on the fixed connector. Each second elastic damping element has a second connector at its end.

[0012] Furthermore, the column is hollow.

[0013] Furthermore, it also includes a third energy dissipation device, at least one of which is provided. The third energy dissipation device includes a circumferential damping structure and a third connector. The circumferential damping structure is sleeved on the column and can provide damping force for rotation around the central axis of the column. Multiple third connectors are provided on the outside of the circumferential damping structure for connecting the protective net.

[0014] Furthermore, the circumferential damping structure includes an internal fastener, a damping layer, and a spherical shell. The internal fastener is used for fixed connection with the column, and its outer wall is a spherical curved surface. The spherical shell is rotatably fitted outside the internal fastener. The damping layer fills the space between the internal fastener and the spherical shell, and its inner surface is rotatably connected to the outer wall of the internal fastener, and its outer surface is rotatably connected to the inner wall of the spherical shell. The third connecting member is disposed on the outer side of the spherical shell.

[0015] The beneficial effects of this utility model are: The aforementioned passive mesh damping energy-dissipating column has at least the following advantages: 1. Multi-directional energy dissipation capability: The first energy dissipation device is rotatably mounted on the column and has the characteristic of radial elastic deformation, so that when it is subjected to the force transmitted through the protective net by falling rocks, it can absorb energy through its own deformation.

[0016] 2. Efficient energy dissipation: Through radial elastic deformation characteristics, impact energy can be initially dissipated, reducing the impact force intensity transmitted to the column.

[0017] 3. Stable connection design: Multiple first connectors are circumferentially spaced to ensure the stability of the connection with the protective net and the uniformity of the force.

[0018] 4. High structural reliability: Cylindrical columns have excellent bending and torsional resistance, making them suitable for withstanding multi-directional impact loads. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 A schematic diagram of a passive mesh damping energy-dissipating column provided in an embodiment of this utility model; Figure 2 for Figure 1 A schematic diagram of the third energy dissipation device in a passive mesh damping energy dissipation column; Figure label: 100, Column; 200, First energy dissipation device; 210, Sleeve; 220, Intermediate connector; 230, First elastic damping rod; 240, Connecting rod; 250, First connector; 300, Second energy dissipation device; 310, Fixed connector; 320, Second elastic damping component; 400, Third energy dissipation device; 410, Circumferential damping structure; 411, Internal fixing component; 412, Damping layer; 413, Spherical shell; 420, Third connector. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Please see Figures 1 to 2 The passive mesh damping energy-dissipating column provided by this utility model includes a column body 100 and a first energy-dissipating device 200.

[0023] Specifically, column 100 is a cylindrical structure with excellent bending and torsional resistance, making it suitable for withstanding multi-directional impact loads.

[0024] At least one first energy dissipation device 200 may be installed, and multiple devices may be installed at intervals along the axial direction of the column 100, depending on actual protection requirements and the height of the column 100, to effectively cope with the impact of falling rocks from different heights. This device is rotatably fitted onto the column 100 and possesses the characteristic of radial elastic deformation, allowing it to absorb energy through its own deformation when subjected to the force transmitted through the protective netting by falling rocks. Simultaneously, multiple first connecting pieces 250 arranged circumferentially at intervals on the first energy dissipation device 200 are used for stable connection with the protective netting, ensuring that the impact force is evenly transmitted to the first energy dissipation device 200 and avoiding localized stress concentration.

[0025] In use, when a falling rock impacts the protective net, the impact force is transmitted through the net to the first connector 250, and then acts on the first energy dissipation device 200. Since the first energy dissipation device 200 can rotate around the column 100 and undergo radial elastic deformation, under the action of the impact force, it will first generate a rotational tendency, and at the same time undergo radial elastic bending deformation. In this process, energy is dissipated through the elastic deformation of the metal, initially weakening the impact energy, reducing the strength of the impact force acting directly on the main body of the column 100, and reducing the risk of bending, breakage and other damage to the column 100 and its foundation damage.

[0026] The passive mesh damping energy-dissipating column has a rotatable design that allows the first energy-dissipating device 200 to flexibly cope with impacts from different directions, avoiding localized damage caused by force in a single direction. At the same time, the radial elastic deformation characteristics achieve initial dissipation of impact energy, protecting the main structure of the column 100. In addition, the circumferential spacing of multiple first connectors 250 ensures the stability of the connection with the protective mesh and the uniformity of force, improving the reliability of the overall protection system.

[0027] In this embodiment, the first energy dissipation device 200 includes a sleeve 210, an intermediate connector 220, and a plurality of first elastic damping rods 230. There are two sleeves 210, which are rotatably mounted on the column 100 with a gap between them. The sleeves 210 and the column 100 are fitted with a clearance to ensure that the sleeves 210 can rotate flexibly around the column 100 and maintain a relatively stable position in the absence of impact, so as to avoid random shaking that would affect the protective effect.

[0028] The intermediate connector 220 is made of metal and has an overall cylindrical structure. It is located between the two sleeves 210, and its axis coincides with the axis of the column 100. It is used to realize the centralized connection and force transmission of the first elastic damping rods 230. The outer diameter of the intermediate connector 220 is determined according to the number and arrangement requirements of the first elastic damping rods 230, ensuring that it can provide stable fixed support for all the first elastic damping rods 230.

[0029] Multiple first elastic damping rods 230 can be made of high-strength spring steel, possessing good elastic deformation capacity and yield strength. They are arranged in a radial star shape, enabling the first elastic damping rods 230 to bear and transmit impact force from multiple directions, achieving uniform energy dissipation. The proximal ends of the first elastic damping rods 230 are fixedly connected to the intermediate connecting member 220 by welding, with reinforced welds to ensure connection strength and prevent detachment under impact force. The distal ends extend outwards; the distal ends of two first elastic damping rods 230 located at both axial ends are fixedly connected to two sleeves 210 respectively, while the distal ends of the remaining first elastic damping rods 230 are provided with a first connecting member 250.

[0030] In use, when the impact force of falling rocks is transmitted to the first connector 250 through the protective net, the force first acts on the distal end of the corresponding first elastic damping rod 230. Since the first elastic damping rod 230 is arranged radially and connected to the intermediate connector 220 and the sleeve 210, the impact force causes the first elastic damping rod 230 to undergo radial elastic bending deformation, simultaneously causing a slight displacement of the intermediate connector 220, which in turn pushes the upper and lower sleeves 210 to rotate around the column 100. During this process, the first elastic damping rod 230 absorbs a large amount of impact energy through metal yielding deformation, achieving effective energy dissipation.

[0031] In this way, the first elastic damping rod 230, arranged in a radial star shape, can withstand impact forces from multiple angles, avoiding damage to the device caused by excessive local force; through the cooperation of the two sleeves 210 and the first elastic damping rod 230, the energy dissipation efficiency is further improved by combining the energy dissipation of single elastic deformation with rotational motion.

[0032] In a preferred embodiment, the first energy dissipation device 200 further includes a connecting rod 240, which connects the distal ends of every two adjacent first elastic damping rods 230. The connecting rod can be made of high-strength spring steel. The connecting rod 240 is welded or bolted to the distal ends of the first elastic damping rods 230. The length of the connecting rod 240 is determined based on the distance between the distal ends of adjacent first elastic damping rods 230, ensuring that the multiple first elastic damping rods 230 form a complete ring-shaped force-bearing system after connection.

[0033] When the first energy dissipation device 200 is subjected to an impact force, each individual first elastic damping rod 230 will undergo radial elastic deformation. Due to the connecting action of the connecting rod 240, adjacent first elastic damping rods 230 will be subjected to synchronous tensile or thrust forces, thus deforming together. This synergistic deformation effect allows the impact force to be uniformly transmitted within the entire annular system of the first energy dissipation device 200, preventing individual first elastic damping rods 230 from failing prematurely due to excessive force. At the same time, the connecting rod 240 itself will also undergo slight elastic deformation during the force application process, further assisting in absorbing some of the impact energy and improving the overall energy dissipation effect.

[0034] To cope with the impact of falling rocks of different energy levels and improve the overall energy dissipation capacity of the column 100, the passive mesh damping energy dissipation column is also equipped with a second energy dissipation device 300, which together with the first energy dissipation device 200 forms a multi-level energy dissipation system.

[0035] Specifically, at least one second energy-dissipating device 300 is provided. It can be arranged at intervals along the axial direction of the column 100 and the first energy-dissipating device 200, or it can be arranged at the same height as the first energy-dissipating device 200 according to actual needs. It is fixed to the column 100 and cannot rotate around the column 100, but it can undergo radial elastic deformation to ensure that it can absorb energy through its own deformation when subjected to impact force. The second energy-dissipating device 300 is provided with multiple second connectors at intervals around the circumference for connecting with the protective net. The positions of the second connectors and the first connectors 250 can be adjusted according to the arrangement requirements of the protective net to achieve full support and force transmission for the protective net.

[0036] In use, when the impact energy of a falling rock is small, the first energy dissipation device 200 can initially dissipate energy through its own rotation and elastic deformation. When the impact energy is large, and the energy dissipation capacity of the first energy dissipation device 200 is insufficient to completely absorb the impact energy, the remaining impact force will be transmitted to the second connector of the second energy dissipation device 300 through the protective net. Since the second energy dissipation device 300 is fixed to the column 100 and cannot rotate, it will undergo radial elastic deformation under the action of the impact force, further absorbing the impact energy through the elastic deformation of the metal, and reducing the impact force transmitted to the main body of the column 100.

[0037] With this structure, the first energy dissipation device 200 and the second energy dissipation device 300 work together to adapt to rockfall impacts of different energy levels, improving the adaptability of the column 100 to complex impact conditions. The fixed setting of the second energy dissipation device 300 allows it to more stably transmit force to itself and dissipate energy when subjected to impact force, avoiding unstable energy dissipation caused by rotation.

[0038] In practical implementation, the fixed connector 310 can be made of metal and fixedly connected to the column 100 by welding or bolting to ensure that no relative displacement occurs under impact force.

[0039] The second elastic damping element 320 can be made of high-strength elastic alloy material, possessing excellent elastic deformation capacity and fatigue resistance. Multiple second elastic damping elements 320 are circumferentially spaced on the fixed connector 310, and the spacing angle can be adjusted according to actual protection requirements. Generally, they are set to equal angular spacing to ensure uniform force distribution.

[0040] When the impact force of falling rocks is transmitted to the second connector through the protective net, the force acts directly on the end of the second elastic damping element 320. Since the second elastic damping element 320 is fixed to the fixed connector 310, and the fixed connector 310 is tightly connected to the column 100, the second elastic damping element 320 will undergo radial elastic bending deformation under the impact force. During this process, the impact energy is absorbed through the elastic deformation of the metal. Simultaneously, because multiple second elastic damping elements 320 are arranged circumferentially, the impact force can be dispersed and absorbed in multiple directions, preventing a single second elastic damping element 320 from failing due to excessive force.

[0041] To further optimize the structural layout of the column 100, reduce the external space occupied, and protect the key components of the second energy-consuming device 300, part of the structure of the second energy-consuming device 300 can be set inside the hollow column 100.

[0042] Specifically, column 100 can be designed as hollow, reducing weight while allowing for the internal arrangement of force transmission and monitoring circuits. Column 100 employs a hybrid structure of carbon fiber reinforced composite material and high-strength aluminum alloy. The outer layer is made of carbon fiber reinforced composite material, providing the advantages of high strength and lightweight; the inner layer is made of high-strength aluminum alloy, ensuring the structure's toughness and connection strength.

[0043] To further enhance the energy dissipation capacity of the column 100, especially its ability to cope with high-energy rockfall impacts, and to implement a more optimized method, this passive mesh damping energy dissipation column is also equipped with a third energy dissipation device 400, forming a three-level energy dissipation system to achieve graded dissipation of impact energy.

[0044] In this embodiment, at least one third energy dissipation device 400 is provided, typically located at the bottom of the column 100, and works in conjunction with the main body of the column 100. It includes a circumferential damping structure 410 and third connectors 420. The circumferential damping structure 410 is fitted onto the column 100 and provides damping force for rotation around the central axis of the column 100. Multiple third connectors 420 are circumferentially spaced on the outer side of the circumferential damping structure 410 for connecting to the protective net, ensuring that impact force is effectively transmitted to the circumferential damping structure 410.

[0045] The circumferential damping structure 410 is made of wear-resistant and high-temperature-resistant metal materials, and internal damping elements, such as friction plates and elastomers, are installed to generate stable rotational damping force. Under no-impact conditions, the circumferential damping structure 410 can remain relatively fixed, preventing random rotation; when subjected to impact force, it can rotate slowly under the action of damping force, dissipating energy through damping.

[0046] When the impact energy of the falling rock is small, the first energy dissipation device 200 and the second energy dissipation device 300 can dissipate most of the impact energy through elastic deformation. When the impact energy is large (e.g., exceeding 150kJ), the first two energy dissipation devices cannot completely absorb the impact energy, and the remaining impact force will be transmitted to the third connector 420 through the protective net, and then act on the circumferential damping structure 410. At this time, the circumferential damping structure 410 begins to rotate around the central axis of the column 100 under the action of the impact force. At the same time, the damping element inside it generates damping force to hinder the rotational motion. The work done by the damping force converts the impact kinetic energy into heat energy and other forms of dissipation, further weakening the impact energy and ensuring that the main body of the column 100 is not damaged.

[0047] The advantages of this structure are as follows: First, the construction of a three-level energy dissipation system realizes the graded dissipation of impact energy, which can effectively cope with various rockfall impact conditions from low to high energy, and improve the protective capability of the column 100; Second, the rotational damping energy dissipation method of the circumferential damping structure 410 provides a new way for the dissipation of impact energy, and the damping force is adjustable, which enhances the adaptability to different impact scenarios; Third, the setting of the third connector 420 ensures the reliable connection between the protective net and the third energy dissipation device 400, and realizes the effective transmission of impact force.

[0048] In this embodiment, the circumferential damping structure 410 includes an internal fixing member 411, a damping layer 412, and a spherical shell 413.

[0049] The internal fastener 411 is made of high-strength metal and has an overall spherical structure for fixed connection with the column 100. Its inner wall matches the outer wall of the column 100 and is tightly fixed to the column 100 by welding or bolting, ensuring that no relative displacement occurs when the circumferential damping structure 410 rotates. The outer wall of the internal fastener 411 is machined into a smooth spherical curved surface to provide a stable contact surface for the rotation of the damping layer 412 and the spherical shell 413.

[0050] The damping layer 412 is made of a lubricating material with a high coefficient of friction, such as rubber or composite materials with added special components. The damping layer 412 fills the space between the internal fixing member 411 and the spherical shell 413. The inner surface of the damping layer 412 is in close contact with the outer wall of the internal fixing member 411 and can rotate relative to it; the outer surface is in close contact with the inner wall of the spherical shell 413 and can also rotate relative to it, ensuring that the damping layer 412 can generate a stable frictional damping effect when the spherical shell 413 rotates.

[0051] Spherical shell 413: The spherical shell 413 is made of high-strength metal. The inner wall of the spherical shell 413 is machined into a spherical curved surface that matches the outer surface of the damping layer 412, and can be rotatably fitted onto the outside of the internal fixing member 411. Multiple third connectors 420 are circumferentially spaced on the outer side of the spherical shell 413 and are fixed by welding to ensure connection strength.

[0052] In use, when a large-energy falling rock impacts and is transmitted through the protective net to the third connector 420, the force acts on the spherical shell 413, causing it to rotate around the central axis of the internal fixing member 411. Since the damping layer 412 is filled between the internal fixing member 411 and the spherical shell 413, and all three can rotate relative to each other, the rotation of the spherical shell 413 causes sliding friction between the inner surface of the damping layer 412 and the outer wall of the internal fixing member 411, and between the outer surface of the damping layer 412 and the inner wall of the spherical shell 413. This friction converts the impact kinetic energy into heat energy, which is then dissipated. Simultaneously, the deformation of the damping layer 412 itself also absorbs some of the impact energy, further enhancing the energy dissipation effect.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A passive mesh damping energy-dissipating column, characterized in that, include: A column, wherein the column has a cylindrical structure; At least one first energy dissipation device is provided. The first energy dissipation device is rotatably sleeved on the column and can undergo radial elastic deformation. The first energy dissipation device is provided with a plurality of first connectors for connecting the protective net at circumferential intervals.

2. The passive mesh damping energy-dissipating column according to claim 1, characterized in that, The first energy dissipation device includes a sleeve, an intermediate connector, and a plurality of first elastic damping rods. There are two sleeves, which are rotatably fitted onto the column at intervals. The intermediate connector is located between the two sleeves. The plurality of first elastic damping rods are arranged in a radial star shape. The proximal end of the first elastic damping rod is fixedly connected to the intermediate connector, and the distal end extends outward. The distal ends of two of the first elastic damping rods located at both ends of the axial direction are respectively fixedly connected to the two sleeves. The distal ends of the remaining first elastic damping rods are provided with a first connector.

3. The passive mesh damping energy-dissipating column according to claim 2, characterized in that, The first energy dissipation device also includes a connecting rod, with each pair of adjacent first elastic damping rods connected at their distal ends by one of the connecting rods.

4. The passive mesh damping energy-dissipating column according to claim 1, characterized in that, It also includes a second energy dissipation device, at least one of which is fixed to the column and capable of radial elastic deformation. The second energy dissipation device is provided with multiple second connectors for connecting the protective net at circumferential intervals.

5. The passive mesh damping energy-dissipating column according to claim 4, characterized in that, The second energy dissipation device includes a fixed connector and a plurality of second elastic damping elements. The fixed connector is fixedly connected to the column. There are a plurality of second elastic damping elements, which are circumferentially spaced on the fixed connector. Each second elastic damping element has a second connector at its end.

6. The passive mesh damping energy-dissipating column according to claim 4, characterized in that, The column is hollow.

7. The passive mesh damping energy-dissipating column according to claim 4, characterized in that, It also includes a third energy dissipation device, at least one of which is provided. The third energy dissipation device includes a circumferential damping structure and a third connector. The circumferential damping structure is sleeved on the column and can provide damping force for rotation around the central axis of the column. Multiple third connectors are provided on the outside of the circumferential damping structure for connecting the protective net.

8. The passive mesh damping energy-dissipating column according to claim 7, characterized in that, The circumferential damping structure includes an internal fixing member, a damping layer, and a spherical shell. The internal fixing member is used for fixed connection with the column, and its outer wall is a spherical curved surface. The spherical shell is rotatably fitted outside the internal fixing member. The damping layer fills the space between the internal fixing member and the spherical shell, and its inner surface is rotatably connected to the outer wall of the internal fixing member, and its outer surface is rotatably connected to the inner wall of the spherical shell. The third connecting member is disposed on the outer side of the spherical shell.

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