Low impedance grid bridge cross-over structure

Abstract

The utility model discloses a kind of low impedance grid bridge cross-connection structures, relate to grid bridge technical field, including copper braid and copper hoop, copper braid is the band body of copper wire mesh braid, copper braid and the connecting portion of grid bridge are semi-wrapped on grid bridge, copper hoop is set in copper braid and grid bridge outside, and when copper hoop is tight, two sides close to form near-circular hoop body;The inner ring of copper hoop middle part is formed with the flat abutting portion with smaller arc than the arc of copper hoop edge, the flat abutting portion is abutting tightly copper braid outer middle part away from grid bridge, copper hoop and copper braid or the inner side of grid bridge contact still integrally formed with rib portion, the utility model cooperates with copper braid and copper hoop, compared with the connecting mode in prior art, the application reduces two from four at connecting place, and the contact area of two connecting places is larger, so as to provide lower impedance, realize stable and reliable low impedance grid bridge cross-connection operation.

Description

Technical Field

[0001] This utility model relates to the field of mesh cable tray technology, and in particular to a low-impedance mesh cable tray bridging structure. Background Technology

[0002] Existing crossover connections for wire mesh cable trays generally use bolt clips or all-copper grounding EHB for crossover, which requires high-cost parts, long installation time, and low efficiency. In addition, the existing crossover methods have poor low-impedance characteristics. Furthermore, the existing crossover methods do not meet the requirement of 5 times the overlap area between the two conductors at the joint, which does not meet the national standard requirements and results in poor performance. Therefore, a low-impedance wire mesh cable tray crossover structure is needed. Utility Model Content

[0003] The purpose of this application is to provide a low-impedance mesh cable tray bridging structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: a low-impedance mesh cable tray bridging structure, comprising:

[0005] Copper braided tape is a tape body woven with copper wire mesh. The connection between the copper braided tape and the mesh cable tray is partially wrapped around the mesh cable tray.

[0006] Copper hoop, a hoop plate with a C-shaped cross section, is placed on the outside of the copper braided strip and the mesh cable tray. When the copper hoop is tightened, the two sides close to form a near-circular hoop body.

[0007] Among them, the inner ring of the copper hoop has a flat abutment part with an arc smaller than that of the edge of the copper hoop. The flat abutment part presses against the outer middle of the copper braided strip away from the grid cable tray. The inner side of the copper hoop that contacts the copper braided strip or the grid cable tray also has an integrally formed pressure rib part, which is used to press the copper braided strip and the grid cable tray.

[0008] A deformed outer arc wall is formed on the middle of the outer side of the copper hoop, corresponding to the position of the flat abutment. The thickness between the deformed outer arc wall and the flat abutment is greater than the thickness of other parts of the copper hoop.

[0009] As a further supplement to this solution, the pressure rib includes a clamping rib, which is integrally formed on the inner sides of the left and right sides of the copper hoop, and the clamping rib presses against the outer sides of the copper braided strip.

[0010] As a further supplement to this solution, the clamping rib is a wedge-shaped rib with its cross-section tilted towards the opening of the copper hoop, and the protruding surfaces of the clamping rib are all arc surfaces.

[0011] As a further supplement to this solution, the pressure rib also includes a limiting rib, which is integrally formed on the inner sides of the left and right sides of the copper hoop. The limiting rib is located on the side of the clamping rib close to the opening of the copper hoop. The limiting rib abuts against the end of the copper braided strip and presses against the outer side of the grid cable tray.

[0012] As a further supplement to this solution, the copper hoop has a first connector and a second connector integrally formed on both sides. The first connector and the second connector are compatible. When the two sides of the copper hoop are closed, the second connector is fastened to the first connector.

[0013] As a further supplement to this solution, a reinforcing extension plate is integrally formed on the outer side of the copper hoop on the second joint. When the second joint is fastened to the first joint, the inner side of the reinforcing extension plate abuts against the outer side of the first joint.

[0014] As a further improvement of this application, a grid-like pressure rib is integrally formed on both sides of the flat end of the copper hoop. The pressure rib is adapted to the weave texture of the copper braided strip, and the pressure rib is interference-fitted with the outer side of the copper braided strip away from the grid cable tray.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. In this utility model, by using copper braided strip and copper hoop together, during the deformation of the copper hoop, the flat part can fix the copper braided strip from the middle and gradually press it to both sides, thereby achieving uniform pressing of the copper braided strip and ensuring uniform contact between the copper braided strip and the mesh cable tray. This satisfies the requirement that the contact area at the connection point reaches five times the normal value, and it is not easy to produce contact gaps, resulting in a better connection effect. Compared with the connection method in the prior art, this application reduces the number of connection points from four to two, and the contact area of ​​the two connection points is larger, thereby providing lower impedance and realizing stable and reliable low-impedance mesh cable tray bridging operation.

[0017] 2. In this utility model, by setting the clamping rib and the limiting rib, during the deformation process of the copper hoop, the clamping rib and the limiting rib work together synchronously to press and limit the outer sides of the copper braided strip after it is unfolded, and make the copper hoop itself press tightly with the grid cable tray when it is closed. The connected copper braided strip fits tightly with the grid cable tray and the copper hoop, and the connection stability is stronger, thereby improving the reliability and stability of the grid cable tray bridging. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure in Example 1;

[0020] Figure 2 This is a side view of the copper hoop structure in Example 1;

[0021] Figure 3 This is a cross-sectional view of the copper braided strip and copper hoop fastened to the cable tray in Example 1;

[0022] Figure 4 This is a schematic diagram of the copper hoop upright side structure in Example 2.

[0023] In the diagram: 1. Copper braided strip; 2. Copper hoop; 21. Flat abutment; 22. Clamping rib; 23. Limiting rib; 24. Deformable outer arc wall; 25. First joint; 26. Second joint; 27. Reinforcing extension plate; 28. Pressure rib; 3. Grid cable tray. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] refer to Figures 1-3 The low-impedance grid cable tray bridging structure shown includes a copper braided strip 1 and a copper hoop 2. The copper braided strip 1 is a strip made of copper wire mesh braiding. The connection part of the copper braided strip 1 and the grid cable tray 3 is partially wrapped around the grid cable tray 3. The copper hoop 2 is a hoop plate with a C-shaped cross section. The copper hoop 2 is clamped on the outside of the copper braided strip 1 and the grid cable tray 3. When the copper hoop 2 is tightened, the two sides are closed to form a near-circular hoop.

[0027] Among them, the inner ring of the copper hoop 2 has a flat abutment part 21 with an arc smaller than that of the edge of the copper hoop 2. The flat abutment part 21 presses against the outer middle of the copper braided strip 1 away from the grid cable tray 3. The inner side of the copper hoop 2 that contacts the copper braided strip 1 or the grid cable tray 3 is also integrally formed with a pressure rib. The pressure rib is used to press the copper braided strip 1 and the grid cable tray 3.

[0028] A deformed outer arc wall 24 is formed on the outer middle of the copper hoop 2, corresponding to the position of the flat abutment 21. The thickness between the deformed outer arc wall 24 and the flat abutment 21 is greater than the thickness of other parts of the copper hoop 2.

[0029] Based on the above structure, in use, the connection between the copper braided strip 1 and the mesh cable tray 3 is first unfolded so that the copper braided strip 1 is partially wrapped around the mesh cable tray 3 (the rod). Then, a copper hoop 2 is used to clamp the connection between the copper braided strip 1 and the mesh cable tray 3. Then, a hydraulic clamp is used to complete the pressing, so that the copper hoop 2 deforms and clamps the copper braided strip 1 and the mesh cable tray 3 tightly. During the deformation of the copper hoop 2, the flat part 21 can fix the copper braided strip 1 from the middle and gradually press it to both sides, thereby achieving uniform pressing of the copper braided strip 1 and ensuring uniform contact between the copper braided strip 1 and the mesh cable tray 3. This satisfies the requirement that the contact area at the connection point reaches five times the normal size, and it is not easy to produce contact gaps, resulting in a better connection effect.

[0030] Furthermore, the pressing part includes a clamping rib 22, which is integrally formed on the inner sides of the left and right sides of the copper hoop 2. The clamping rib 22 presses the outer sides of the copper braided strip 1. The clamping rib 22 is a wedge-shaped rib with a cross section that protrudes at the opening of the copper hoop 2. The protruding surfaces of the clamping rib 22 are all arc surfaces.

[0031] The pressure rib also includes a limiting rib 23, which is integrally formed on the inner sides of the left and right sides of the copper hoop 2. The limiting rib 23 is located on the side of the clamping rib 22 near the opening of the copper hoop 2. The limiting rib 23 abuts against the end of the copper braided strip 1 and presses against the outer side of the grid cable tray 3.

[0032] By setting the clamping rib 22 and the limiting rib 23, during the deformation process of the copper hoop 2, the clamping rib 22 and the limiting rib 23 work together synchronously to press and limit the outer sides of the copper braided strip 1 after it is unfolded, and make the copper hoop 2 itself press tightly with the grid cable tray 3 when it is closed. The connected copper braided strip 1 fits tightly with the grid cable tray 3 and the copper hoop 2, and the connection stability is stronger, thereby improving the reliability and stability of the grid cable tray bridging.

[0033] Furthermore, the copper hoop 2 has a first connector 25 and a second connector 26 integrally formed on both sides. The first connector 25 and the second connector 26 are adapted to each other. When the two sides of the copper hoop 2 are closed, the second connector 26 is fastened to the first connector 25. Through the cooperation of the first connector 25 and the second connector 26, the two sides of the copper hoop 2 can form a tighter closure after closing, thereby ensuring the overall aesthetics after bridging. At the same time, it makes it less likely for gaps to be generated at the connection point of the bridging copper hoop 2, reducing the probability of the copper hoop 2 opening up during subsequent use.

[0034] In addition, the copper hoop 2 has an integrally formed reinforcing extension plate 27 on the outside of the second joint 26. When the second joint 26 is fastened to the first joint 25, the inner side of the reinforcing extension plate 27 abuts against the outer side of the first joint 25. On the one hand, it can enhance the structural strength of the copper hoop 2 at the closure point, and on the other hand, it can further enhance the stability of the copper hoop 2 after closure, thereby further reducing the probability of the copper hoop 2 opening from the connection point.

[0035] Example 2

[0036] refer to Figure 4 The low-impedance grid cable tray bridging structure shown differs from Embodiment 1 in that:

[0037] The copper hoop 2 has a mesh-like pressure rib 28 integrally formed on both sides of the flat part 21. The pressure rib 28 is adapted to the weaving texture of the copper braided strip 1, and the pressure rib 28 is interference-fitted with the outer side of the copper braided strip 1 away from the mesh bridge 3.

[0038] By setting the pressure rib 28, the copper hoop 2 can fit tightly with the copper braided strip 1, so that the two can form a more fitting connection after being compressed. Under the condition that the pressure meets the lower limit requirement, the two are tightly connected, which can provide lower resistance.

[0039] The working principle of this utility model is as follows: In daily use, the connection between the copper braided strip 1 and the mesh cable tray 3 is first unfolded so that the copper braided strip 1 is half wrapped around the mesh cable tray 3. Then, a copper hoop 2 is used to clamp the connection between the copper braided strip 1 and the mesh cable tray 3. Then, a hydraulic clamp is used to complete the pressing, so that the copper hoop 2 deforms and clamps the copper braided strip 1 and the mesh cable tray 3 tightly. During the deformation of the copper hoop 2, the flat part 21 can fix the copper braided strip 1 from the middle and gradually press it to both sides, thereby achieving uniform pressing of the copper braided strip 1 and ensuring uniform contact between the copper braided strip 1 and the mesh cable tray 3. This satisfies the requirement that the contact area at the connection point reaches five times the normal size, and it is not easy to produce contact gaps, resulting in a better connection effect.

[0040] Compared to the connection methods in the prior art, this application reduces the number of connections from four to two, and the contact area of ​​the two connections is larger, thereby providing lower impedance and achieving stable and reliable low-impedance mesh cable tray bridging operations.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-impedance mesh cable tray bridging structure, characterized in that, include: Copper braided tape (1), wherein the copper braided tape (1) is a tape body woven with copper wire mesh, and the connection part of the copper braided tape (1) and the mesh bridge (3) is partially wrapped on the mesh bridge (3); Copper hoop (2), the copper hoop (2) is a hoop plate with a C-shaped cross section, the copper hoop (2) is hooped outside the copper braided strip (1) and the grid bridge (3), and when the copper hoop (2) is tightened, the two sides are closed to form a near-circular hoop body; Among them, the inner ring of the copper hoop (2) has a flat abutment part (21) with an arc smaller than that of the edge of the copper hoop (2). The flat abutment part (21) abuts against the outer middle of the copper braided strip (1) away from the grid cable tray (3). The inner side of the copper hoop (2) that contacts the copper braided strip (1) or the grid cable tray (3) is also integrally formed with a pressure rib. The pressure rib is used to press the copper braided strip (1) and the grid cable tray (3). A deformable outer arc wall (24) corresponding to the position of the flat abutment (21) is formed in the middle of the outer side of the copper hoop (2). The thickness between the deformable outer arc wall (24) and the flat abutment (21) is greater than the thickness of other parts of the copper hoop (2).

2. The low-impedance mesh cable tray bridging structure according to claim 1, characterized in that: The pressing part includes a clamping rib (22), which is integrally formed on the inner sides of the left and right sides of the copper hoop (2). The clamping rib (22) presses the outer sides of the copper braided strip (1).

3. The low-impedance grid cable tray bridging structure according to claim 2, characterized in that: The clamping rib (22) is a wedge-shaped rib with its cross-section tilted towards the opening of the copper hoop (2), and the protruding surfaces of the clamping rib (22) are all arc surfaces.

4. The low-impedance mesh cable tray bridging structure according to claim 1, characterized in that: The pressure rib also includes a limiting rib (23), which is integrally formed on the inner sides of the left and right sides of the copper hoop (2). The limiting rib (23) is located on the side of the clamping rib (22) near the opening of the copper hoop (2). The limiting rib (23) abuts against the end of the copper braided strip (1) and presses against the outer side of the grid bridge (3).

5. The low-impedance mesh cable tray bridging structure according to claim 1, characterized in that: The copper hoop (2) has a first connector (25) and a second connector (26) integrally formed on both sides. The first connector (25) and the second connector (26) are adapted to each other. When the two sides of the copper hoop (2) are closed, the second connector (26) is fastened to the first connector (25).

6. The low-impedance grid cable tray bridging structure according to claim 5, characterized in that: The copper hoop (2) is integrally formed with a reinforcing extension plate (27) on the outside of the second joint (26). When the second joint (26) is fastened to the first joint (25), the inner side of the reinforcing extension plate (27) abuts against the outer side of the first joint (25).

7. A low-impedance mesh cable tray bridging structure according to any one of claims 1-6, characterized in that: The copper hoop (2) has a mesh-like pressure rib (28) integrally formed on both sides of the flat part (21). The pressure rib (28) is adapted to the weaving texture of the copper braided strip (1). The pressure rib (28) is interference-fitted with the outer side of the copper braided strip (1) away from the mesh bridge (3).

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