Novel electric power structure seismic device

Abstract

This utility model relates to a novel seismic-resistant device for power structures, aiming to solve the technical problems of current cable trays having very limited seismic resistance, poor seismic effect, increased maintenance costs of power systems, and potential impact on the reliability and stability of power supply. It includes: a seismic-resistant connection mechanism located at both ends of the cable tray body for interconnection; the seismic-resistant connection mechanism comprising: hemispherical holes at both ends of the cable tray body, each containing a sphere; and two connecting plates, each with a circular hole. This utility model allows the cable tray body to rotate freely within a ±30° range through the hinged structure of the hemispherical holes and spheres. Combined with the shock-absorbing springs on the outside of the fixing rods, it can simultaneously absorb vibration energy in the horizontal, vertical, and torsional directions. Compared to the traditional rigid connection structure of the cable tray body, this significantly improves the multi-directional seismic resistance of the cable tray body, overcoming the limitations of single-axial seismic resistance.

Description

Technical Field

[0001] This utility model relates to the field of seismic resistance technology for power structures, specifically a novel seismic resistance device for power structures. Background Technology

[0002] Cable trays, as an important component of power transmission systems, come in various structures and have diverse functions. Common types of cable trays include trough type, tray type, ladder type, and mesh type. They are composed of key components such as supports, brackets, and installation accessories. These different types of cable trays not only have unique characteristics and application areas, but also demonstrate a high degree of flexibility in design and use. They can be installed independently or laid on various building and pipe rack supports according to actual needs.

[0003] Existing cable trays offer limited seismic resistance, resulting in poor earthquake protection. This increases power system maintenance costs and may affect the reliability and stability of power supply. Therefore, new technical solutions are needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a new type of seismic-resistant device for power structures. This will solve the technical problems of the current cable trays having very limited seismic resistance performance, poor seismic effect, increased maintenance costs of the power system, and potential impact on the reliability and stability of power supply.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: A novel seismic-resistant device for power structures is designed, comprising:

[0006] An anti-seismic connection mechanism, located at both ends of the cable tray body, is used to connect the cable tray bodies to each other. The anti-seismic connection mechanism includes:

[0007] Hemispherical holes are formed at both ends of the cable tray body, and each hemispherical hole contains a sphere;

[0008] Two connecting plates are provided, each with a round hole. The connecting plates are fitted onto the outside of the spheres through the round holes. A fixing bolt passes through the connecting plates and is threaded to the cable tray body. A fixing rod is fixedly connected between the two spheres.

[0009] A shock-absorbing spring is sleeved on the outside of the fixed rod, and both ends of the shock-absorbing spring are fixedly connected to the two connecting plates respectively.

[0010] Preferably, fixing plates are fixedly connected to both sides of the bottom of the cable tray body, and mounting frames are fixedly connected to both fixing plates on both sides of the cable tray body.

[0011] Preferably, anti-seismic supports are installed at an angle on both sides of the mounting frame, and the anti-seismic supports are connected to the mounting frame at a 45° angle.

[0012] Preferably, both the top of the mounting frame and the top of the seismic brace are fixedly connected to a mounting plate, and the mounting plate is provided with expansion bolts.

[0013] Preferably, a shock-absorbing pad is provided between two adjacent cable tray bodies, and the shock-absorbing pad is elastic.

[0014] Preferably, both ends of the shock-absorbing pad are provided with storage grooves, and the storage grooves correspond to the positions of the fixing bolts and are adapted in size.

[0015] Preferably, the connecting plate is fitted onto the outer one-third of the sphere through a circular hole, and the outer diameter of the sphere is adapted to the inner diameter of the hemispherical hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Three-dimensional vibration self-adaptation: The hinged structure between the hemispherical hole and the sphere allows the cable tray body to rotate freely within a range of ±30°. Combined with the shock-absorbing spring on the outside of the fixed rod, it can simultaneously absorb vibration energy in the horizontal, vertical and torsional directions (such as the combined effect of seismic transverse waves and longitudinal waves). Compared with the rigid connection structure of the traditional cable tray body, it greatly improves the multi-directional seismic resistance of the cable tray body and breaks through the limitation of single axial seismic resistance.

[0018] 2. Stress relief protection mechanism: The pre-compression design of the damping spring generates elastic deformation under vibration load, converting the instantaneous impact force at the cable tray connection into spring potential energy, avoiding the breakage of the connecting plate or loosening of bolts due to rigid collision. It is especially suitable for high-frequency vibration environments (such as industrial plants and subway tunnels), greatly extending the fatigue life of the connecting components.

[0019] 3. Installation accuracy tolerance: The clearance fit between the sphere and the hemispherical hole (tolerance ≤ 0.5mm) allows for an effective connection even with an angular deviation of ±2° during installation of the cable tray body. This solves the stress concentration problem caused by positioning errors in traditional rigid connections and reduces the difficulty of on-site installation and commissioning. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the cable tray body connection structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the shock-absorbing pad structure of this utility model;

[0023] Figure 4This is a schematic cross-sectional view of the cable tray body connection structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure between the cable tray body and the seismic connection mechanism of this utility model;

[0025] Figure 6 This is an enlarged view of section A of this utility model.

[0026] In the diagram: 1. Cable tray body; 2. Fixing plate; 21. Mounting frame; 22. Seismic brace; 23. Mounting plate; 24. Expansion bolt; 3. Shock-absorbing pad; 31. Storage slot; 4. Connecting plate; 41. Shock-absorbing spring; 42. Hemispherical hole; 43. Fixing bolt; 44. Sphere; 45. Round hole; 46. Fixing rod. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Example 1: Novel seismic-resistant device for power structures, see [link / reference] Figures 1 to 6 ,include:

[0029] An anti-seismic connection mechanism is provided at both ends of the cable tray body 1 to realize the interconnection of the cable tray bodies 1. The anti-seismic connection mechanism includes:

[0030] Hemispherical holes 42 are provided at both ends of the cable tray body 1, and each hemispherical hole 42 is provided with a sphere 44;

[0031] Two connecting plates 4, each having a round hole 45, are fitted onto the outside of the sphere 44 through the round hole 45. A fixing bolt 43 passes through the connecting plate 4 and is threaded to the cable tray body 1. A fixing rod 46 is fixedly connected between the two spheres 44.

[0032] A shock-absorbing spring 41 is sleeved on the outside of the fixed rod 46, and the two ends of the shock-absorbing spring 41 are respectively fixedly connected to the two connecting plates 4.

[0033] This device, through its anti-seismic connection mechanism, achieves the following during use:

[0034] Three-dimensional vibration self-adaptation: The hinge structure between the hemispherical hole 42 and the sphere 44 allows the cable tray body 1 to rotate freely within a range of ±30°. In conjunction with the damping spring 41 on the outside of the fixed rod 46, it can simultaneously absorb vibration energy in the horizontal, vertical and torsional directions (such as the combined effect of seismic transverse waves and longitudinal waves). Compared with the rigid connection structure of the traditional cable tray body 1, it greatly improves the multi-directional seismic resistance of the cable tray body 1 and completely breaks through the limitation of single axial seismic resistance.

[0035] Stress relief protection mechanism: The pre-compression design of the shock-absorbing spring 41 generates elastic deformation under vibration load, converting the instantaneous impact force at the cable tray connection into spring potential energy, avoiding the breakage of the connecting plate 4 or loosening of bolts due to rigid collision. It is especially suitable for high-frequency vibration environments (such as industrial plants and subway tunnels), greatly extending the fatigue life of the connecting components.

[0036] Installation accuracy tolerance: The clearance fit (tolerance ≤ 0.5mm) between the sphere 44 and the hemispherical hole 42 allows for an effective connection even with an angular deviation of ±2° during installation of the cable tray body 1. This solves the stress concentration problem caused by positioning errors in traditional rigid connections and reduces the difficulty of on-site installation and commissioning.

[0037] For details, see Figure 1 The cable tray body 1 has fixed plates 2 on both sides of its bottom. Mounting frames 21 are fixedly connected to the fixed plates 2 on both sides of the cable tray body 1. Seismic bracing 22 is installed at an angle on both sides of the mounting frames 21. The seismic bracing 22 is connected to the mounting frames 21 at a 45° angle. Mounting plates 23 are fixedly connected to the top of the mounting frames 21 and the top of the seismic bracing 22. Expansion bolts 24 are provided on the mounting plates 23. The mounting frames 21 and the seismic bracing 22 are installed on the top of the building by means of the expansion bolts 24. The self-weight of the cable and the vibration load are decomposed into horizontal shear force and vertical support force by the 45° inclined seismic bracing 22, and are synchronously transmitted to the top mounting plate 23 and the bracket mounting plate 23, thereby further improving the seismic resistance of the cable tray body 1.

[0038] Further, see Figure 2 A shock-absorbing pad 3 is provided between two adjacent cable tray bodies 1. The shock-absorbing pad 3 is elastic. Through the elastic deformation of the shock-absorbing pad 3, it can absorb the equipment vibration in the 20-50Hz frequency band, convert the instantaneous impact force between adjacent cable tray bodies 1 into elastic potential energy, construct a multi-level shock absorption and protection system for the cable tray body 1, and further improve the seismic resistance of the cable tray body 1.

[0039] It is worth noting that, see Figure 3 Both ends of the shock-absorbing pad 3 are provided with storage grooves 31. The storage grooves 31 correspond to the positions of the fixing bolts 43 and are adapted in size. Through the precise alignment of the storage grooves 31 and the fixing bolts 43, the shock-absorbing pad 3 can be directly inserted into the fixing bolts 43 during installation without additional positioning steps. The independently detachable shock-absorbing pad 3 allows for the replacement of aged shock-absorbing pads 3 without disassembling the cable tray body 1, which is more convenient.

[0040] It is worth noting that, see Figure 6The connecting plate 4 is fitted onto the outer one-third of the sphere 44 through the circular hole 45, and the outer diameter of the sphere 44 is adapted to the inner diameter of the hemispherical hole 42. By fitting the connecting plate 4 onto the outer one-third of the sphere 44, two-thirds of the surface of the sphere 44 is kept in contact with the hemispherical hole 42 and the circular hole 45, so as to prevent the sphere 44 from detaching from the circular hole 45 and causing the cable tray body 1 to lose its seismic resistance function.

[0041] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0042] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A novel seismic-resistant device for power structures, characterized in that, include: An anti-seismic connection mechanism is provided at both ends of the cable tray body (1) to realize the mutual connection of the cable tray bodies (1). The anti-seismic connection mechanism includes: Hemispherical holes (42) are opened at both ends of the cable tray body (1), and each hemispherical hole (42) is provided with a sphere (44). Two connecting plates (4) are provided, and each of the two connecting plates (4) has a round hole (45). The connecting plate (4) is sleeved on the outside of the ball (44) through the round hole (45). A fixing bolt (43) passes through the connecting plate (4) and the fixing bolt (43) is threaded to the cable tray body (1). A fixing rod (46) is fixedly connected between the two balls (44). A shock-absorbing spring (41) is sleeved on the outside of the fixed rod (46), and the two ends of the shock-absorbing spring (41) are respectively fixedly connected to the two connecting plates (4).

2. The novel seismic-resistant device for power structures as described in claim 1, characterized in that, The bottom sides of the cable tray body (1) are fixedly connected to fixing plates (2), and mounting frames (21) are fixedly connected to the fixing plates (2) on both sides of the cable tray body (1).

3. The novel seismic-resistant device for power structures as described in claim 2, characterized in that, Both sides of the mounting frame (21) are inclinedly mounted with seismic bracing (22), and the seismic bracing (22) is connected to the mounting frame (21) at a 45° angle.

4. The novel seismic-resistant device for power structures as described in claim 3, characterized in that, The top of the mounting frame (21) and the top of the seismic brace (22) are both fixedly connected to mounting plates (23), and expansion bolts (24) are provided on the mounting plates (23).

5. The novel seismic-resistant device for power structures as described in claim 1, characterized in that, A shock-absorbing pad (3) is provided between two adjacent cable tray bodies (1), and the shock-absorbing pad (3) is elastic.

6. The novel seismic-resistant device for power structures as described in claim 5, characterized in that, Both ends of the shock-absorbing pad (3) are provided with storage grooves (31), and the storage grooves (31) correspond to the positions of the fixing bolts (43) and are adapted in size.

7. The novel seismic-resistant device for power structures as described in claim 1, characterized in that, The connecting plate (4) is fitted onto the outer third of the sphere (44) through the round hole (45), and the outer diameter of the sphere (44) is matched with the inner diameter of the hemispherical hole (42).

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