Elastic sling clip

Abstract

The utility model provides a kind of elastic sling wire clamp, for fixed connection load bearing cable and elastic sling, elastic sling wire clamp is also connected with reinforcing cable;One end of reinforcing cable is fixedly connected with elastic sling wire clamp, and the other end is fixedly connected with elastic sling.By additionally reinforcing cable fixedly connected with elastic sling wire clamp and elastic sling, form multistage fixed structure, effectively disperse vibration and dynamic load.Even if the slight loosening of the clamping point of the clamp, reinforcing cable can still provide redundant constraint, significantly reduce the risk of elastic sling slipping, ensure the stability of catenary tension distribution.

Description

Technical Field

[0001] This utility model relates to the field of high-speed railway catenary technology, specifically an elastic suspension cable clamp. Background Technology

[0002] In high-speed railway catenary systems, elastic suspenders are key components, primarily used to adjust the tension distribution of the catenary and ensure good contact between the pantograph and the contact wire, thereby improving the stability and safety of train operation. Traditional elastic suspenders are typically fixed to the catenary wire using clamps. For example, Chinese patent CN201920118290.8 discloses an elastic suspender clamp that uses an upper clamp, a middle clamp, and a lower clamp connected by bolts and nuts. The catenary wire is clamped between the upper and middle clamps, while the elastic suspender is fixed between the middle and lower clamps.

[0003] However, existing flexible sling clamps have the following drawbacks: the end of the flexible sling is fixed only by a single clamping point. During long-term operation of high-speed railways, factors such as vibration, wind load, and temperature changes can easily cause it to loosen or even slip off, leading to sling failure and affecting the dynamic performance of the overhead contact system. Once the flexible sling slips off or the clamp loosens, frequent inspections or even replacements are required, increasing operation and maintenance costs and potentially affecting the normal operation of the railway.

[0004] Therefore, there is an urgent need for a new type of elastic sling fixing structure to improve its connection reliability and stability, and ensure the long-term stable operation of the high-speed railway catenary system. Utility Model Content

[0005] To address the technical problems in the background art, this utility model discloses an elastic sling clamp.

[0006] This utility model provides an elastic sling clamp for fixing and connecting a load-bearing cable and an elastic sling. A reinforcing cable is also connected to the elastic sling clamp.

[0007] One end of the reinforcing cable is fixedly connected to the elastic sling clamp, and the other end is fixedly connected to the elastic sling.

[0008] Furthermore, a gap is provided between the reinforcing cable and the elastic sling.

[0009] Furthermore, the reinforcing cable is located below the elastic sling.

[0010] Furthermore, one end of the reinforcing cable, the fixed connection between the elastic suspender and the load-bearing cable is located at the end of the horizontal region of the load-bearing cable; the other end of the reinforcing cable is fixedly connected to the end of the horizontal region of the elastic suspender.

[0011] Furthermore, the reinforcing cables and elastic slings are made of the same material.

[0012] Furthermore, it includes an upper elastic clamp and a lower elastic clamp; the upper elastic clamp includes a first upper clamping plate, a first middle clamping plate, a fixed clamping plate and a first lower clamping plate arranged in sequence, the load-bearing cable is clamped and fixed between the first upper clamping plate and the first middle clamping plate, the elastic slings are clamped and fixed between the first middle clamping plate and the fixed clamping plate, and the reinforcing cables are clamped between the fixed clamping plate and the first lower clamping plate; the lower elastic clamp includes a second upper clamping plate, a second middle clamping plate and a second lower clamping plate arranged in sequence, the elastic slings are clamped between the second upper clamping plate and the second middle clamping plate, and the reinforcing cables are clamped between the second middle clamping plate and the second lower clamping plate.

[0013] The beneficial effects of this utility model are:

[0014] 1. By adding reinforcing cables that are fixedly connected to the elastic sling clamps and elastic slings, a multi-level fixing structure is formed, effectively dispersing vibration and dynamic loads. Even if the clamping points become slightly loose, the reinforcing cables can still provide redundant constraints, significantly reducing the risk of elastic sling slippage and ensuring the stability of the contact wire tension distribution.

[0015] 2. The reinforced cable distributes the stress concentration of the traditional single clamping point, reduces metal fatigue caused by long-term wind vibration and temperature fluctuations, extends the service life of the elastic sling and clamp, and reduces the replacement frequency due to component failure.

[0016] 3. With improved structural reliability, the maintenance cycle for loose clamps or sling failures is extended, reducing unplanned maintenance work, avoiding railway operation interruptions caused by emergency repairs, and significantly reducing overall operation and maintenance costs.

[0017] 4. The original main structure of the wire clamp is retained, and the function is upgraded only by adding reinforcing cables. There is no need to modify the existing load-bearing cables or contact network structure. The operation is simple and the improvement cost is low. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 yes Figure 1 Sectional view of AA;

[0021] Figure 3 yes Figure 1 Sectional view of BB;

[0022] In the diagram: 1. Support cable; 2. Elastic sling; 3. Reinforcing cable; 4. Upper elastic clamp; 5. Lower elastic clamp; 6. Connecting bolt; 7. Neck bolt; 41. First upper clamp plate; 42. First middle clamp plate; 43. Fixing clamp plate; 44. First lower clamp plate; 51. Second upper clamp plate; 52. Second middle clamp plate; 53. Second lower clamp plate. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0024] like Figure 1 As shown, this utility model discloses an elastic sling clamp 2 for fixing the connection between the load-bearing cable 1 and the elastic sling 2. A reinforcing cable 3 is also connected to the elastic sling clamp 2; one end of the reinforcing cable 3 is fixedly connected to the elastic sling clamp 2, and the other end is fixedly connected to the elastic sling 2. Its specific structure is as follows:

[0025] Includes upper elastic clamp 4 and lower elastic clamp 5; such as Figure 2 As shown, the upper elastic clamp 4 includes a first upper clamping plate 41, a first middle clamping plate 42, a fixed clamping plate 43, and a first lower clamping plate 44 arranged sequentially. The load-bearing cable 1 is clamped and fixed between the first upper clamping plate 41 and the first middle clamping plate 42. The elastic sling 2 is clamped and fixed between the first middle clamping plate 42 and the fixed clamping plate 43. One end of the reinforcing cable 3 is clamped between the fixed clamping plate 43 and the first lower clamping plate 44. Figure 3 As shown, the lower elastic clamp 5 includes a second upper clamping plate 51, a second middle clamping plate 52 and a second lower clamping plate 53 arranged in sequence. The elastic sling 2 is clamped between the second upper clamping plate 51 and the second middle clamping plate 52, and the other end of the reinforcing cable 3 is clamped between the second middle clamping plate 52 and the second lower clamping plate 53.

[0026] Both the upper elastic clamp 4 and the lower elastic clamp 5 are connected and fixed by two fully threaded connecting bolts 6 and two necking bolts 7. The fixed connection structure refers to an elastic sling clamp 2 disclosed in patent CN201920118290.8.

[0027] The advantages of the above setup are: 1. By adding a reinforcing cable 3 fixedly connected to the clamps and elastic sling 2, a multi-level fixed structure is formed, effectively dispersing vibration and dynamic loads. Even if the clamping point of the clamp becomes slightly loose, the reinforcing cable 3 can still provide redundant constraints, significantly reducing the risk of slippage of the elastic sling 2 and ensuring the stability of the contact wire tension distribution. 2. The reinforcing cable 3 shares the stress concentration of the traditional single clamping point, reducing metal fatigue caused by long-term wind vibration and temperature fluctuations, extending the service life of the elastic sling 2 and the clamp, and reducing the replacement frequency due to component failure. 3. After the structural reliability is improved, the maintenance cycle for clamp loosening or sling failure is extended, reducing unplanned maintenance operations, avoiding railway operation interruptions caused by emergency repairs, and significantly reducing overall operation and maintenance costs. 4. The original clamp main structure is retained, and the function is upgraded only by adding the reinforcing cable 3. There is no need to modify the existing load-bearing cable 1 or contact wire structure, making the operation simple and the improvement cost low.

[0028] Furthermore, the aforementioned arrangement places the reinforcing cable 3 below the elastic sling 2, and there is a gap between the reinforcing cable 3 and the elastic sling 2. This allows the installation of the reinforcing cable 3 without changing the positions of the load-bearing cable 1 and the elastic sling 2, reducing the difficulty of improvement and lowering costs; moreover, the gap between the reinforcing cable 3 and the elastic sling 2 ensures that their fixing structures are independent of each other, without affecting their structural strength, resulting in higher connection stability.

[0029] The reinforcing cable 3 and the elastic sling 2 are made of the same material, which makes their coefficient of thermal expansion, modulus of elasticity and fatigue resistance consistent. This avoids internal stress or deformation inconsistency caused by temperature changes due to material differences, thereby reducing fretting wear at the connection points and extending the overall service life.

[0030] In this embodiment, one end of the reinforcing cable 3, the fixed connection point of the elastic sling 2 and the load-bearing cable 1 is located at the end of the horizontal region of the load-bearing cable 1; the other end of the reinforcing cable 3 is fixedly connected to the end of the horizontal region of the elastic sling 2. The advantages of this arrangement are: 1. It fully utilizes the rigid support of the load-bearing cable 1, making the reinforcing cable 3 and the elastic sling 2 form a parallel force-bearing structure. When the pantograph passes, the reinforcing cable 3 can effectively share the dynamic load, reduce the vibration impact borne by the elastic sling 2 alone, and reduce the risk of stress concentration in the clamping structure. 2. The other end of the reinforcing cable 3 is fixed to the end of the horizontal region of the elastic sling 2 (i.e., the end of the working section of the elastic sling 2), forming a closed-loop constraint from the clamp to the end of the sling. Even if the clamping part of the clamp becomes slightly loose due to vibration, the reinforcing cable 3 can still limit the longitudinal displacement of the elastic sling 2 through anchoring at both ends, preventing it from completely slipping out, and significantly improving the system's redundancy safety. 3. The arrangement at the end of the horizontal region makes the reinforcing cable 3 and the elastic sling 2 form a parallel tension chain in space, which can synergistically suppress wind sway and lateral vibration. Especially when temperature changes cause the contact wire to expand and contract, the constraint of the reinforcing cable 3 can balance the length changes of the elastic suspender cable 2 and avoid local tension imbalance caused by thermal expansion and contraction.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An elastic sling clamp for fixing and connecting a load-bearing cable (1) and an elastic sling (2), characterized in that: The elastic sling clamp is also connected to a reinforcing cable (3); One end of the reinforcing cable (3) is fixedly connected to the elastic sling clamp, and the other end is fixedly connected to the elastic sling (2).

2. The elastic sling clamp according to claim 1, characterized in that: A gap is provided between the reinforcing cable (3) and the elastic suspender cable (2).

3. The elastic sling clamp according to claim 2, characterized in that: The reinforcing cable (3) is located below the elastic sling (2).

4. The elastic sling clamp according to claim 1, characterized in that: One end of the reinforcing cable (3), the fixed connection of the elastic suspender (2) and the load-bearing cable (1) are located at the end of the horizontal region of the load-bearing cable (1); The other end of the reinforcing cable (3) is fixedly connected to the end of the horizontal region of the elastic sling (2).

5. The elastic sling clamp according to claim 1, characterized in that: The reinforcing cable (3) and the elastic sling (2) are made of the same material.

6. The elastic sling clamp according to claim 3, characterized in that: Includes an upper elastic clamp (4) and a lower elastic clamp (5); The upper elastic clamp (4) includes a first upper clamping plate (41), a first middle clamping plate (42), a fixed clamping plate (43) and a first lower clamping plate (44) arranged in sequence. The load-bearing cable (1) is clamped and fixed between the first upper clamping plate (41) and the first middle clamping plate (42). The elastic sling (2) is clamped and fixed between the first middle clamping plate (42) and the fixed clamping plate (43). The reinforcing cable (3) is clamped between the fixed clamping plate (43) and the first lower clamping plate (44). The lower elastic clamp (5) includes a second upper clamping plate (51), a second middle clamping plate (52) and a second lower clamping plate (53) arranged in sequence. The elastic sling (2) is clamped between the second upper clamping plate (51) and the second middle clamping plate (52), and the reinforcing cable (3) is clamped between the second middle clamping plate (52) and the second lower clamping plate (53).

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