A friction energy dissipation unit device

Abstract

This application discloses a friction energy dissipation unit device, relating to the field of slope protection net technology. It includes a first plate, a second plate, a steel wire rope, a sleeve, and a core ring. The first plate is located below the second plate and the two are connected. The second plate has an irregularly shaped surface and symmetrical first and second energy dissipation channels. The steel wire rope has energy dissipation channels at both ends, forming a U-shaped structure. The sleeve is fitted with the U-shaped structure to form a clamping structure, which engages with the arc-shaped groove of the core ring. Under external force, the steel wire rope slides relative to the energy dissipation channels to achieve frictional energy dissipation. Some embodiments increase the constraint area through S-shaped / spiral channels or achieve secondary energy dissipation through sliding connections between the plates. The device adopts a frictional energy dissipation mode, has no irreversible deformation, is reusable, and has a detachable structure for easy maintenance. It is suitable for external force energy dissipation scenarios such as earthquakes and rockfall impacts in slope protection net systems.

Description

Technical Field

[0001] This utility model relates to the field of slope protection net technology, specifically to a friction energy dissipation unit device. Background Technology

[0002] To address geological risks, slope protection nets have been widely used in various slope stabilization projects. Among them, the energy dissipator, as a core functional component of the protection net system, largely determines the overall protection and energy dissipation efficiency of the net.

[0003] Currently, energy dissipation units on the market are of varying quality and effectiveness. The common energy dissipation principle is deformation-based, which means that the energy dissipation unit cannot be used again after use due to irreversible deformation. Furthermore, replacing the energy dissipation unit is quite difficult when repairing the protective netting system. Utility Model Content

[0004] In response to the above-mentioned technical problems, this application solves the problem that in the prior art, the energy dissipation unit only dissipates energy through deformation, which makes the energy dissipation unit unusable after use due to irreversible deformation, and it is difficult to replace the energy dissipation unit when repairing the protective net system.

[0005] To achieve the above objectives, the technical solution adopted in this application is: a friction energy dissipation unit device, comprising a first plate, a second plate, a steel wire rope, a sleeve, and a spiral ring.

[0006] The first plate is located below the second plate, and the upper surface of the first plate is connected to the lower surface of the second plate.

[0007] The upper surface of the second plate is configured as an irregular shape, and a first energy dissipation channel and a second energy dissipation channel are formed through the front side wall of the second plate and facing the rear side wall of the second plate.

[0008] The two ends of the steel wire rope pass through the corresponding first energy dissipation channel and second energy dissipation channel from the rear to the front. The first energy dissipation channel and the steel wire rope, as well as the second energy dissipation channel and the steel wire rope, are all clearance-fitted, so that the steel wire rope portion located on the rear side of the second plate forms a U-shaped structure.

[0009] The sleeve is fitted over the entire U-shaped structure, forming a retaining structure at the bottom bend of the U-shaped structure.

[0010] The outer surface of the heart-shaped ring is formed with an arc-shaped groove, and the sleeve structure is engaged in the groove.

[0011] To better realize this utility model, further, multiple columns are provided on the lower surface of the first plate.

[0012] To better realize this utility model, the irregular surface is further described as a wavy surface, a sawtooth surface, or a pulsed surface.

[0013] To better realize this utility model, the first energy-consuming channel and the second energy-consuming channel are arranged symmetrically at the middle position relative to the second plate.

[0014] To better realize this utility model, the internal channels of the first energy-consuming channel and the second energy-consuming channel are further S-shaped or spiral-shaped.

[0015] To better realize this utility model, the upper surface of the first plate and the lower surface of the second plate are slidably connected to each other.

[0016] To better realize this utility model, the upper surface of the first plate is provided with a cylindrical slider, the bottom outer peripheral wall of the cylindrical slider is provided with a circular limiting flange, the lower surface of the second plate is provided with a circular groove, and the top inner peripheral wall of the circular groove is provided with a circular constriction flange.

[0017] The cylindrical slider and the circular groove are slidably connected with a clearance fit, and the outer diameter of the limiting flange is larger than the inner diameter of the narrowed flange.

[0018] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0019] 1. This utility model employs a friction energy dissipation mode, dissipating energy through friction between the steel wire rope and the energy dissipation channel, as well as through sliding between plates. This eliminates the need for frequent replacements, significantly reducing engineering maintenance costs. Of course, when replacement is necessary, only the steel wire rope needs to be disassembled to replace the corresponding device.

[0020] 2. In this utility model, the symmetrical arrangement of energy dissipation channels ensures balanced force, the S-shaped / spiral channel design increases the contact area between the steel wire rope and the channel, and the sliding connection of the plates realizes secondary energy dissipation, which improves the energy dissipation effect in multiple dimensions. It can be adapted to external force scenarios such as earthquakes of different intensities and rockfall impacts, and has a wide range of applications.

[0021] 3. In this utility model, the first plate and the second plate can be detachably connected by bolts, the snap-fit ​​structure between the heart ring and the wire rope is standardized, and damaged parts can be disassembled and replaced individually. The operation is simple and the replacement time is short, which greatly improves maintenance efficiency compared with the traditional whole replacement mode.

[0022] 4. In this utility model, the sleeve constrains the U-shaped structure of the wire rope to achieve stress dispersion, the arc-shaped groove of the heart-shaped ring avoids stress concentration, and the limiting structure of the sliding connection of the plate prevents the components from falling off. The overall structure can effectively reduce the risk of local stress concentration, extend the fatigue life of the device, and improve the long-term stability of use. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the structure of the chicken heart ring in Embodiment 1 of this utility model;

[0027] Figure 4 This is a schematic diagram of the sleeve structure in Embodiment 1 of this utility model;

[0028] Figure 5 This is a cross-sectional view of Embodiment 3 of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 100-First plate; 101-Column; 102-Cylindrical slider; 200-Second plate; 201-First energy dissipation channel; 202-Second energy dissipation channel; 203-Bolt; 204-Circular groove; 300-Wire rope; 301-Collar structure; 400-Sleeve; 500-Heart ring; 501-Slot. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Example 1

[0037] like Figures 1 to 4 As shown, a friction energy dissipation unit device includes a first plate 100, a second plate 200, a steel wire rope 300, a sleeve 400, and a spiral ring 500.

[0038] The first plate 100 is located below the second plate 200, and the upper surface of the first plate 100 and the lower surface of the second plate 200 are connected to each other. In this embodiment, they are detachably connected by bolts 203.

[0039] The upper surface of the second plate 200 is configured as an irregular surface, and a first energy dissipation channel 201 and a second energy dissipation channel 202 are formed through the front side wall of the second plate 200 and facing the rear side wall of the second plate 200.

[0040] The two ends of the steel wire rope 300 pass through the corresponding first energy dissipation channel 201 and second energy dissipation channel 202 from the rear to the front. The first energy dissipation channel 201 and the steel wire rope 300 are respectively fitted with a clearance, so that the steel wire rope portion of the steel wire rope 300 located behind the second plate 200 forms a U-shaped structure.

[0041] The sleeve 400 is fitted over the entire U-shaped structure, so that a retaining structure 301 is formed at the bottom bend of the U-shaped structure.

[0042] The outer side of the heart-shaped ring 500 is formed with an arc-shaped slot 501, and the sleeve structure 301 is engaged in the slot 501.

[0043] like Figures 1 to 4 As shown in this embodiment, the lower surface of the first plate 100 is provided with multiple columns 101.

[0044] like Figures 1 to 4 As shown in this embodiment, the irregular surface is a wavy surface, a sawtooth surface, or a pulsed surface.

[0045] like Figures 1 to 4 As shown, in this embodiment, the first energy-consuming channel 201 and the second energy-consuming channel 202 are symmetrically arranged at the middle position relative to the second plate 200.

[0046] Working principle:

[0047] Both ends of the steel wire rope 300 are connected to the existing protective netting system (the connection method with the protective netting system is a mature existing technology). The anchor rod can be fixed to the wall surface through the core ring. When the protective netting system is subjected to external force, the steel wire rope 300 is subjected to force and relative displacement occurs with the second plate 200. The first energy dissipation channel 201 and the second energy dissipation channel 202 simultaneously generate relative displacement, thereby dissipating frictional energy. When repairing the protective netting system, only the steel wire rope 300 needs to be disassembled to replace the corresponding frictional energy dissipation unit device.

[0048] Example 2

[0049] The overall structure of Embodiment 2 is the same as that of Embodiment 1, except that the internal channels of the first energy-consuming channel 201 and the second energy-consuming channel 202 are S-shaped or spiral-shaped, and the inner diameter of the first energy-consuming channel 201 and the second energy-consuming channel 202 is equal to twice the outer diameter of the wire rope 300, so as to avoid the 300 getting stuck at the bend of the first energy-consuming channel 201 and the second energy-consuming channel 202.

[0050] Working principle:

[0051] By increasing the contact area between the steel wire rope 300 and the internal channels of the first energy dissipation channel 201 and the second energy dissipation channel 202, frictional energy dissipation is enhanced.

[0052] Example 3

[0053] like Figure 5 As shown, the overall structure of Embodiment 3 is the same as that of Embodiment 1 or Embodiment 2, except that:

[0054] The upper surface of the first plate 100 and the lower surface of the second plate 200 are slidably connected to each other (without bolts 203).

[0055] like Figure 5 As shown, in this embodiment, a cylindrical slider 102 is provided on the upper surface of the first plate 100, and a circular limiting fold is provided on the bottom outer peripheral wall of the cylindrical slider 102. A circular groove 204 is provided on the lower surface of the second plate 200, and a circular constriction fold is provided on the top inner peripheral wall of the circular groove 204.

[0056] The cylindrical slider 102 and the circular groove 204 are slidably connected with a clearance fit. The outer diameter of the limiting flange is larger than the inner diameter of the narrowed flange, and the limiting flange prevents the cylindrical slider 102 from disengaging from the circular groove 204.

[0057] Working principle:

[0058] When the protective netting system is subjected to external force, the steel wire rope 300 is subjected to force and undergoes relative displacement with the second plate 200. The first energy dissipation channel 201 and the second energy dissipation channel 202 simultaneously undergo relative displacement, thereby dissipating energy through friction. At the same time, the cylindrical slider 102 and the circular groove 204 undergo secondary relative movement to dissipate energy.

[0059] Based on the above embodiments one to three, the specific analysis is as follows:

[0060] I. Functions and Coordination of Core Structural Components

[0061] 1. First plate 100 and second plate 200

[0062] First component:

[0063] Supporting foundation: The columns 101 on the lower surface provide overall support for the device, similar to a foundation in a building structure, fixing the device to the foundation (such as a wall or ground).

[0064] Sliding connection carrier: In embodiment three, the cylindrical slider 102 on the upper surface cooperates with the circular groove 204 of the second plate to form a sliding interface for secondary energy dissipation.

[0065] Second plate:

[0066] Irregular surface functions: irregular designs such as wavy surfaces and sawtooth surfaces (e.g.) Figure 1-4 (As shown) By increasing the surface area, the coefficient of friction with the protective net is increased (μ increases by 30%-50%), preventing the protective net from slipping.

[0067] Energy dissipation channel carrier: The first / second energy dissipation channels (201 / 202) on the front sidewall provide a friction path for the wire rope, and are arranged symmetrically (e.g., Figure 1 (As shown) Ensure balanced force distribution and avoid localized stress concentration.

[0068] Cooperation mechanism:

[0069] Bolted connection (Example 1): The first plate and the second plate are rigidly fixed (removable) by bolt 203, which is suitable for scenarios that require fixed energy dissipation.

[0070] Sliding connection (Example 3): The clearance fit between the cylindrical slider 102 and the circular groove 204 (the clearance is 0.5mm) allows relative sliding. When the external force exceeds the main energy dissipation threshold (e.g., 5kN), secondary energy dissipation is triggered.

[0071] 2. Wire rope 300 and sleeve 400

[0072] Wire rope:

[0073] Energy conduction medium: Connected to the protective netting system at both ends, it transmits external forces to the energy dissipation channel, and dissipates energy through friction with the inner wall of the channel (such as earthquakes or rockfall impacts).

[0074] Sleeve:

[0075] Compression fitting: The ferrule is fitted onto the outside of the U-shaped steel wire rope, and the bottom bend is squeezed into a compression fitting structure 301, similar to the mechanical anchoring in the grouting connection of the rebar sleeve.

[0076] Stress dispersion: Through ring constraint, the concentrated stress at the bend of the wire rope is dispersed to the entire sleeve, avoiding local breakage.

[0077] Cooperation mechanism:

[0078] Gap coordination: The gap between the energy dissipation channel and the wire rope (e.g., 1-2mm) allows the wire rope to slide within the channel, while the sleeve, through the compression forming a clamping structure, restricts excessive displacement, achieving a dynamic balance of "sliding-locking".

[0079] 3. Heart-shaped ring 500 and ferrule structure 301

[0080] Heart-shaped ring:

[0081] Anchoring core: The arc-shaped groove 501 on the outer side is rigidly engaged with the sleeve structure 301 to fix the device to the anchor rod or wall, similar to the pin connection in bridge bearings.

[0082] Stress buffering: The arc design of the slot (e.g., R=10mm) can disperse the tension of the wire rope and avoid local wear caused by stress concentration.

[0083] Card sleeve structure:

[0084] Mechanical locking: formed by the sleeve pressing the bend of the wire rope, similar to the fastening effect of heat shrink tubing, ensuring a reliable connection between the core ring and the wire rope.

[0085] Cooperation mechanism:

[0086] Dual constraints: The mechanical interlocking of the ferrule structure and the slot limiting of the heart ring form a composite anchoring system of "rigid connection + flexible buffer", and the pull-out resistance can reach more than 1.5 times the design load.

[0087] II. Deepening the Role of Key Innovation Points

[0088] 1. Friction enhancement mechanism of irregular surfaces

[0089] Wavy / serrated surface design:

[0090] Micro-friction:

[0091] The uneven surface structure (such as a crest height of 2mm and a sawtooth angle of 60°) increases the mechanical engagement with the protective net, and the coefficient of friction μ increases from 0.3 to 0.6.

[0092] Macroscopic anti-slip:

[0093] Similar to tire tread patterns, it absorbs some energy through surface deformation, reducing the risk of overall slippage of the protective net.

[0094] 2. Energy dissipation optimization of S-shaped / spiral energy dissipation channels

[0095] Path lengthening effect:

[0096] Contact area doubled:

[0097] Compared to straight channels, S-shaped channels increase the equivalent contact length by 50% (e.g., from 100mm to 150mm) and improve friction energy dissipation capacity by 30%.

[0098] Turbulence effect:

[0099] The serpentine motion of the wire rope within the spiral channel generates lateral vibrations, further dissipating the high-frequency impact energy.

[0100] 3. Triggering logic of the secondary energy dissipation system

[0101] Sliding connection threshold:

[0102] Prioritize primary energy dissipation:

[0103] When the external force is ≤5kN, only the steel wire rope and the energy dissipation channel dissipate energy through friction, and the cylindrical slider remains stationary.

[0104] Secondary trigger condition:

[0105] When the external force is greater than 5kN, the slider overcomes the friction of the groove (e.g., 2kN) and begins to slide, and secondary energy dissipation is achieved through the metal friction between the slider and the groove (μ = 0.15).

[0106] Limit protection mechanism:

[0107] Limiting flange (outer diameter D1):

[0108] To prevent the slider from detaching from the slide groove and ensure safety redundancy (e.g., D1 = 20mm, slide groove inner diameter D2 = 18mm).

[0109] Shrinking and folding (inner diameter d):

[0110] Control the sliding clearance (e.g., d = 17 mm) to avoid ineffective displacement caused by excessive clearance.

[0111] III. Synergistic Effects in Engineering Applications

[0112] Multi-stage energy dissipation pathways:

[0113] Primary energy dissipation: friction between the wire rope and the energy-consuming channel (accounting for 70% of total energy consumption).

[0114] Secondary energy dissipation: sliding friction between the slider and the groove (accounting for 20% of the total energy consumption).

[0115] Level 3 buffer: Interface friction between irregularly shaped surfaces and protective netting (accounting for 10% of total energy consumption).

[0116] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A friction energy dissipation unit device, characterized in that: Includes a first plate (100), a second plate (200), a wire rope (300), a sleeve (400), and a heart-shaped ring (500). The first plate (100) is located below the second plate (200), and the upper surface of the first plate (100) is connected to the lower surface of the second plate (200). The upper surface of the second plate (200) is configured as an irregular surface, and the front side wall of the second plate (200) is provided with a first energy dissipation channel (201) and a second energy dissipation channel (202) facing the rear side wall of the second plate (200). The two ends of the steel wire rope (300) pass through the corresponding first energy dissipation channel (201) and second energy dissipation channel (202) from the rear to the front. The first energy dissipation channel (201) and the steel wire rope (300) are respectively fitted with a clearance, so that the steel wire rope portion of the steel wire rope (300) located behind the second plate (200) forms a U-shaped structure. The sleeve (400) is fitted over the entire U-shaped structure, so that a retaining structure (301) is formed at the bottom bend of the U-shaped structure. The outer side of the heart-shaped ring (500) is formed with an arc-shaped slot (501), and the sleeve structure (301) is engaged in the slot (501).

2. The friction energy dissipation unit device according to claim 1, characterized in that: The lower surface of the first plate (100) is provided with multiple columns (101).

3. The friction energy dissipation unit device according to claim 2, characterized in that: The irregular surface is a wavy surface, a sawtooth surface, or a pulsed surface.

4. The friction energy dissipation unit device according to claim 1, characterized in that: The first energy-consuming channel (201) and the second energy-consuming channel (202) are symmetrically arranged at the middle position relative to the second plate (200).

5. A friction energy dissipation unit device according to claim 1, 3 or 4, characterized in that: The internal channels of the first energy-consuming channel (201) and the second energy-consuming channel (202) are S-shaped or spiral-shaped.

6. The friction energy dissipation unit device according to claim 1, characterized in that: The upper surface of the first plate (100) and the lower surface of the second plate (200) are slidably connected to each other.

7. The friction energy dissipation unit device according to claim 6, characterized in that: The upper surface of the first plate (100) is provided with a cylindrical slider (102), and the bottom outer peripheral wall of the cylindrical slider (102) is provided with a circular limiting flange. The lower surface of the second plate (200) is provided with a circular groove (204), and the top inner peripheral wall of the circular groove (204) is provided with a circular narrowing flange. The cylindrical slider (102) and the circular groove (204) are slidably connected with a clearance fit, and the outer diameter of the limiting flange is larger than the inner diameter of the narrowed flange.

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