A bridge joint interphase cross-over clamp

Abstract

The utility model relates to cable bridge grounding technical field and disclose a kind of bridge section interval ground jumper, comprising: two groups of bridge body and the U-shaped sheet claw for the splicing assembly of two bridge bodies, U-shaped sheet claw is used to fix two bridge bodies by bolt group;Wire clamp component, wire clamp component is used to equip potential connection of two splicing assembly two bridge bodies;Wire clamp component includes two wire clamp units and the jumper ground wire installed between two wire clamp units, and two wire clamp units are used to connect the two ends of jumper ground wire with two bridge bodies. The bridge section interval ground jumper, installation is convenient and does not damage bridge body: by Z type sheet frame directly installed on U-shaped sheet claw, without punching on bridge body;With the extrusion force of bridge body splicing, wire clamp fixing is synchronously completed, and installation efficiency is improved;Reliable connection and good contact: screw rod driven abutting block adjustable contact force, and enhance grounding connection effect.

Description

Technical Field

[0001] This utility model relates to the field of cable tray grounding technology, specifically to a cable tray section indirect grounding jumper clamp. Background Technology

[0002] During the installation of cable tray systems, to ensure safe operation and meet electrical specifications, reliable grounding bridging is required between adjacent tray sections to achieve equipotential bonding. This measure not only effectively prevents the risk of electric shock caused by potential differences but also provides a low-impedance fault current path in case of a fault, ensuring the safety of equipment and personnel.

[0003] Traditional cable tray grounding bridging methods have the following main problems: Installation is inconvenient and can easily damage the cable tray structure: holes need to be drilled in the cable tray body and then bolted to fix the jumper terminals; on-site drilling increases construction time and reduces installation efficiency; it damages the original anti-corrosion layer of the cable tray and can easily cause rust problems.

[0004] Insufficient contact reliability: The contact pressure between the jumper wire and the cable tray is not adjustable and is easily loosened by vibration; the connection parts are susceptible to environmental corrosion, leading to increased contact resistance; and there is a lack of effective protective measures, affecting long-term stability. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a jumper clamp between cable tray sections, which solves the problem in the prior art that requires drilling holes in the cable tray body and fixing the jumper terminals with bolts, thereby damaging the original anti-corrosion layer of the cable tray and easily causing rust problems.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a grounding jumper clamp between cable tray sections, comprising: Two sets of cable tray bodies and U-shaped claws for splicing and assembling the two cable tray bodies, wherein the U-shaped claws are used to fix the two cable tray bodies by bolt groups; A clamp assembly for equipotentially connecting two spliced ​​and assembled cable tray bodies; The clamp assembly includes two clamp units and a grounding wire installed between the two clamp units. The two clamp units are used to tightly connect the two ends of the grounding wire to the two cable tray bodies. The wire clamp unit includes a Z-shaped plate holder mounted on a U-shaped plate claw, and one end of the Z-shaped plate holder is provided with a clamping block driven by a lead screw; The two ends of the grounding wire are connected to the clamping blocks of the two clamp units.

[0007] Preferably, the lead screw is threaded to one end of the Z-shaped plate frame via a threaded block, and one end of the lead screw is rotatably connected to the outer surface of the abutment block; The clamping block is provided with a connection unit for connecting the grounding wire.

[0008] Preferably, an annular edge is fixedly connected to the outer surface of the abutting block, and a sealing ring is provided on the inner side of the annular edge; Furthermore, an annular groove for storing the sealing ring is provided on the inner side of the annular edge.

[0009] Preferably, the connecting unit includes a sleeve block that is connected to the abutment block via a contact frame, and the outer surface of the sleeve block has an opening for inserting the retaining ring block at the end of the grounding wire; The sleeve block has a convex connecting block inside for securing and fixing the retaining ring block.

[0010] Preferably, the sleeve block is internally provided with a spring assembly for driving the convex connecting block toward the retaining ring block; An operating rod is fixedly connected to the convex connecting block, and one end of the operating rod extends to the outside of the sleeve block.

[0011] Preferably, a gap A is reserved between the U-shaped claw and the two bridge bodies; The other end of the Z-shaped plate holder is used to insert into the gap A reserved between the U-shaped plate claw and the two bridge bodies, so that the Z-shaped plate holder can be fixed simultaneously during the assembly and fixing of the two bridge bodies by the U-shaped plate claw through the bolt group.

[0012] Preferably, the insertion end of the Z-shaped plate holder is corrugated.

[0013] Preferably, the insertion end of the Z-shaped plate holder has a mounting hole for inserting the screw in the bolt assembly.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a grounding jumper clamp between cable tray sections, which has the following advantages: This utility model is easy to install and does not damage the cable tray body: it is directly installed on the U-shaped claw through the Z-shaped bracket, without the need to drill holes in the cable tray body; the clamp is fixed simultaneously by the squeezing force when the cable tray body is spliced, which improves the installation efficiency.

[0015] Reliable connection and good contact: The screw-driven clamping block can adjust the contact force to enhance the grounding connection effect; the sealing ring design prevents rust and corrosion at the connection point and avoids poor contact.

[0016] Flexible and adjustable installation position: The clamp can be adjusted within the reserved gap range to adapt to different installation needs; the angle can be adjusted around the bolt group screw to meet the needs of different bridging directions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is an exploded view of the structure of this utility model; Figure 4 This is a schematic diagram of the wire clamp unit of this utility model; Figure 5 This is a rear view of the wire clamp unit of this utility model; Figure 6 This is a partial cross-sectional view of the connecting unit of this utility model; Figure 7 This is a second state diagram of the Z-shaped plate holder of this utility model.

[0018] In the diagram: 10. Cable tray structure; 20. U-shaped claw; 30. Bolt assembly; 40. Wire clamp unit; 41. Z-shaped plate holder; 42. Lead screw; 43. Clamping block; 44. Annular edge; 45. Sealing ring; 50. Grounding wire; 60. Connecting unit; 61. Sleeve block; 62. Convex connecting block; 63. Spring assembly; 64. Operating lever. Detailed Implementation

[0019] 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.

[0020] Example 1: See attached document Figures 1 to 7 A type of jumper clamp between cable tray sections, comprising: Two sets of cable tray bodies 10 and U-shaped claws 20 for splicing and assembling the two cable tray bodies 10. The U-shaped claws 20 are used to fix the two cable tray bodies 10 by bolt group 30. The wire clamp assembly is used for equipotential bonding of two spliced ​​and assembled cable tray bodies 10; The wire clamp assembly includes two wire clamp units 40 and a grounding wire 50 installed between the two wire clamp units 40. The two wire clamp units 40 are used to abut and connect the two ends of the grounding wire 50 to the two cable tray bodies 10. The wire clamp unit 40 includes a Z-shaped bracket 41 installed on the U-shaped claw 20. One end of the Z-shaped bracket 41 is provided with a clamping block 43 driven by a lead screw 42. The clamping block 43 is connected by a lead screw 42. The rotation of the lead screw 42 drives the clamping block 43 to feed, thereby improving the installation effect of the grounding wire 50 and enhancing the equipotential strength of the two cable tray bodies 10. When the clamping block 43 is in contact, only the contact connection position of the cable tray body 10 needs to be polished to reduce the impact of the coating. The two ends of the grounding wire 50 are connected to the clamping blocks 43 of the two clamp units 40; By directly mounting the Z-shaped bracket 41 in the clamp unit 40 onto the U-shaped claw 20, it is possible to avoid drilling holes in the cable tray body 10 to connect the grounding wire 50, thereby improving the assembly efficiency of the grounding wire 50 without damaging the cable tray body 10.

[0021] See attached document Figure 4 and Figure 5 The lead screw 42 is threadedly connected to one end of the Z-shaped plate frame 41 via a threaded block, and one end of the lead screw 42 is rotatably connected to the outer side of the abutment block 43. By manually rotating the lead screw 42, the clamping block 43 can be fed forward, thereby adjusting the contact force between the clamping block 43 and the cable tray body 10 and enhancing the contact effect of grounding bridging.

[0022] The clamping block 43 is provided with a connection unit 60 for connecting the grounding wire 50; The connection unit 60 allows for a detachable connection between the grounding wire 50 and the clamping block 43, facilitating the replacement of the grounding wire 50 according to actual needs without affecting the clamping unit 40.

[0023] See attached document Figure 5 An annular edge 44 is fixedly connected to the outer surface of the abutting block 43, and a sealing ring 45 is provided on the inner side of the annular edge 44. The annular edge 44 and the sealing ring 45 on the inner side of the annular edge 44 are used to protect the position where the abutment block 43 is installed with the cable tray body 10, so as to prevent rust and corrosion at the connection position of the grounding wire 50, which would lead to poor contact and high resistance. Furthermore, an annular groove for storing the sealing ring 45 is provided on the inner side of the annular edge 44. The annular groove is not only used to store the sealing ring 45 and improve its installation effect, but also to position the sealing ring 45 and prevent it from shifting during operation.

[0024] See attached document Figures 4 to 6 The connecting unit 60 includes a sleeve block 61 connected to the abutment block 43 via a contact frame, and the outer surface of the sleeve block 61 is provided with an opening for inserting the retaining ring block at the end of the grounding wire 50; the inside of the sleeve block 61 is provided with a convex connecting block 62 for abutting and fixing the retaining ring block. The convex connecting block 62 is used to connect with the end of the grounding wire 50, so that the two cable tray bodies 10 form an equipotential connection.

[0025] See attached document Figure 6 The sleeve block 61 is provided with a spring assembly 63 for driving the convex connecting block 62 toward the retaining ring block; The spring assembly 63 is used to press the convex connecting block 62, causing the convex connecting block 62 to move toward the position of the retaining ring block. In this way, the pressing force of the convex connecting block 62 forms an indirect connection between the grounding wire 50 and the clamping block 43. An operating lever 64 is fixedly connected to the convex connecting block 62, and one end of the operating lever 64 extends to the outside of the sleeve block 61; The operating lever 64 is used by the operator to control the convex connecting block 62, so that the convex connecting block 62 can be used to control the connection between the convex connecting block 62 and the end retaining ring block of the grounding wire 50, thus enabling the disassembly and replacement of the grounding wire 50.

[0026] See attached document Figure 2 A gap A is reserved between the U-shaped claw 20 and the two cable tray bodies 10; The other end of the Z-shaped plate holder 41 is used to insert into the gap A reserved between the U-shaped plate claw 20 and the two bridge body 10, so that the Z-shaped plate holder 41 can be fixed simultaneously during the assembly and fixing of the two bridge body 10 by the U-shaped plate claw 20 and the bolt group 30. By inserting the insertion end of the Z-shaped bracket 41 between the cable tray body 10 and the U-shaped claw 20, the clamp unit 40 is simultaneously installed using the squeezing force of the U-shaped claw 20 during the assembly of the cable tray body 10. This not only provides good installation functionality, but also allows the installation position of the clamp unit 40 to be adjusted within the range of gap A, meeting the installation needs of different positions. It also avoids the problem of needing to drill holes in the cable tray body 10 to complete the wiring during the installation of traditional jumper clamps.

[0027] Example 2: The difference from Example 1 is that; See attached document Figure 7 The insertion end of the Z-shaped plate holder 41 is corrugated; The corrugated insertion end of the Z-shaped plate holder 41 is designed to ensure the stability of the installation of the Z-shaped plate holder 41 when the thickness of the Z-shaped plate holder 41 is less than the gap A, thus preventing the gap A from being too large and thus failing to effectively guarantee the stability of the Z-shaped plate holder 41.

[0028] Example 3: The difference from Example 1 is that; See attached document Figure 4 and Figure 5 The insertion end of the Z-shaped plate holder 41 is provided with a mounting hole for inserting the screw in the bolt assembly 30; The mounting holes are used to indirectly fix and limit the Z-shaped bracket 41 through the bolt group 30. This further prevents the Z-shaped bracket 41 from slipping down when the bolt group 30 loosens and the gap A loses its compressive force, thus affecting the connection effect of the grounding wire 50. Furthermore, the screw in the bolt group 30 passing through the Z-shaped bracket 41 facilitates the adjustment of the angle of the clamp unit 40 with the screw as the center, thereby meeting the connection requirements of the grounding wire 50 at different positions.

[0029] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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 cross-connection clamp between cable tray sections, characterized in that, include: Two sets of cable tray bodies (10) and U-shaped claws (20) for splicing and assembling the two cable tray bodies (10), the U-shaped claws (20) being used to fix the two cable tray bodies (10) by bolt groups (30); A clamp assembly for equipotentially connecting two spliced ​​and assembled cable tray bodies (10); The clamp assembly includes two clamp units (40) and a grounding wire (50) installed between the two clamp units (40). The two clamp units (40) are used to abut and connect the two ends of the grounding wire (50) to the two cable tray bodies (10). The wire clamp unit (40) includes a Z-shaped plate holder (41) mounted on a U-shaped plate claw (20), and one end of the Z-shaped plate holder (41) is provided with a clamping block (43) driven by a lead screw (42). The two ends of the grounding wire (50) are connected to the clamping blocks (43) of the two clamp units (40).

2. A bridge joint ground jumper according to claim 1, wherein: The lead screw (42) is threaded to one end of the Z-shaped plate frame (41) through a threaded block, and one end of the lead screw (42) is rotatably connected to the outer side of the abutment block (43); The clamping block (43) is provided with a connection unit (60) for connecting the grounding wire (50).

3. A bridge joint ground jumper according to claim 2, wherein: The outer surface of the abutting block (43) is fixedly connected with an annular edge (44), and a sealing ring (45) is provided on the inner side of the annular edge (44). Furthermore, an annular groove for storing the sealing ring (45) is provided on the inner side of the annular edge (44).

4. A bridge joint ground jumper according to claim 2, wherein: The connecting unit (60) includes a sleeve (61) that is connected to the abutment block (43) via a contact frame, and the outer surface of the sleeve (61) is provided with an opening for inserting the retaining ring block at the end of the grounding wire (50); The sleeve block (61) is provided with a convex connecting block (62) for clamping and fixing the retaining ring block.

5. A bridge joint ground jumper according to claim 4, wherein: The sleeve block (61) is provided with a spring assembly (63) for driving the convex connecting block (62) toward the retaining ring block. An operating rod (64) is fixedly connected to the convex connecting block (62), and one end of the operating rod (64) extends to the outside of the sleeve block (61).

6. A bridge section ground jumper according to claim 1, wherein: A gap A is reserved between the U-shaped claw (20) and the two bridge bodies (10); The other end of the Z-shaped plate holder (41) is used to insert into the gap A reserved between the U-shaped plate claw (20) and the two bridge bodies (10), so that the Z-shaped plate holder (41) can be fixed simultaneously during the assembly and fixing of the two bridge bodies (10) by the U-shaped plate claw (20) through the bolt group (30).

7. A bridge section ground jumper according to claim 6, characterised in that: The insertion end of the Z-shaped plate holder (41) is corrugated.

8. A bridge section ground jumper according to claim 6, wherein: The insertion end of the Z-shaped plate holder (41) is provided with a mounting hole for inserting the screw in the bolt group (30).

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