Cable tray expansion joint

Abstract

The utility model discloses a kind of cable bridge expansion joints, including two segments of cable bridge being arranged on same straight line, gap is left between two segments of cable bridge and is connected by expansion joint. Expansion joint includes bridge connecting piece of left-right symmetry, connecting piece is connected with the cable bridge of respective one side, and a plurality of spring connectors are equipped between connecting piece. Bridge connecting piece includes bottom plate, left side plate and right side plate, and the left and right sides of cable bridge are equipped with sliding slot, sliding block is arranged on side plate and is matched with sliding slot, and smooth sliding is realized. Bottom plate is adjustable structure by width, and it is formed by left bottom plate and right bottom plate, left bottom plate is connected with left side plate, and is connected with right side plate by forming slot with connecting plate through support block, and right bottom plate is slidably embedded into slot. The structure can provide expansion compensation when the length of bridge changes due to thermal expansion and contraction or installation error, to ensure the stable connection of cable bridge.

Description

Technical Field

[0001] This utility model relates to a cable tray expansion joint. Background Technology

[0002] Cable trays are widely used in large industrial facilities, buildings, and communication systems to support and protect cables. During actual installation and use, the length of the cable tray may change due to temperature variations, foundation settlement, or construction errors. Without proper expansion joint compensation devices, this can easily lead to deformation, cracking, or tensile damage to the cables at the cable tray connections.

[0003] Most existing cable tray expansion joints use simple interlocking methods, lacking reliable limiting and buffering mechanisms. This results in unstable expansion and contraction, poor dust protection, and insufficient durability. Therefore, a cable tray expansion joint with a reasonable structure, smooth expansion and contraction, and protective functions is needed. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a cable tray expansion joint.

[0005] A cable tray expansion joint includes two cable trays arranged in a straight line, with a gap between the two cable trays and connected by the expansion joint. The expansion joint includes two symmetrically arranged cable tray connectors, each connecting to a cable tray on the left or right side. A plurality of spring connectors are provided between the two cable tray connectors. Each cable tray connector includes a base plate, a left side plate, and a right side plate. The left and right sides of the cable tray have sliding grooves, and each of the left and right side plates has a slider connected to the sliding groove of the cable tray. The base plate... The width is adjustable. The base plate includes a left base plate and a right base plate. The left base plate is connected to the left side plate. A support block is provided on the inner bottom side of the left base plate, and a connecting plate is provided on the outer bottom side of the left base plate. The left base plate forms a slot with the cable tray through the support block, the connecting plate, and the cable tray. The right base plate slides in the slot and is connected to the right side plate. A connecting block is also provided on the outer bottom side of the right base plate. The spring connector includes a telescopic rod. The two ends of the telescopic rod are respectively connected to the connecting plates of the left and right cable tray connectors. A compression spring is provided on the outer side of the telescopic rod. The two ends of the compression spring are also respectively connected to the connecting plates.

[0006] As a further improvement, the sliding groove on the cable tray is a T-shaped groove, and the sliders on the left and right side plates are T-shaped sliders. The two work together to achieve lateral limiting, prevent the connectors from shifting during the extension and retraction process, and ensure smooth operation.

[0007] As a further improvement, the contact surfaces of the left and right base plates are provided with a wear-resistant coating to reduce sliding friction, extend component life, and reduce expansion and contraction resistance.

[0008] As a further improvement, the telescopic rod is an adjustable-length threaded rod with locking nuts at both ends to fix the maximum telescopic range of the telescopic joint and prevent excessive telescopic expansion from causing structural damage.

[0009] As a further improvement, the compression spring is fitted with a dustproof bellows on its outer side to prevent dust from entering the spring and affecting its elastic performance, thereby improving reliability and service life.

[0010] As a further improvement, the support block is a detachable structure, fixed to the left base plate with bolts, which facilitates replacement or height adjustment and enhances adaptability to different construction sites.

[0011] Beneficial effects: High structural stability: The symmetrical bridge frame connectors, combined with the slide-slider structure, achieve lateral limiting and ensure smooth operation of the expansion joint.

[0012] Smooth and durable expansion and contraction: The base plate features an adjustable width structure and is equipped with a wear-resistant coating, which effectively reduces friction and increases service life.

[0013] Balancing buffering and protection: The telescopic rod works in conjunction with the compression spring to achieve buffering compensation for thermal expansion and contraction, and the maximum extension can be adjusted by the threaded rod and the locking nut.

[0014] Good protective performance: The compression spring is covered with a dustproof corrugated tube to prevent dust from entering and affecting its elasticity.

[0015] Easy installation and maintenance: The support block adopts a detachable structure, which makes it easy to replace or adjust the height and improves adaptability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a cable tray expansion joint; Figure 2 yes Figure 1 Top view; Figure 3 yes Figure 1 Side view; Figure 4 yes Figure 1 A sectional view; 1. Expansion joint 2. Cable tray connector 3. Spring connector 4. Base plate 5. Left side plate 6. Right side plate 7. Slide groove 8. Slider 9. Left base plate 10. Right base plate 11. Support block 12. Connecting plate 13. Telescopic rod 14. Compression spring. Detailed Implementation

[0017] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0018] like Figures 1-4 As shown, a cable tray expansion joint includes an expansion joint 1, a cable tray connector 2, a spring connector 3, a base plate 4, a left side plate 5, a right side plate 6, a slide groove 7, a slider 8, a left base plate 9, a right base plate 10, a support block 11, a connecting plate 12, a telescopic rod 13, and a compression spring 14.

[0019] An expansion joint for cable trays is disclosed, wherein two coaxially arranged cable trays are connected by an expansion joint 1 with a pre-existing gap between them. The expansion joint 1 includes symmetrical cable tray connectors 2, which are fixedly connected to the cable trays on both sides respectively.

[0020] The cable tray connector 2 includes a base plate 4, a left side plate 5 and a right side plate 6. The cable tray is provided with sliding grooves 7 on both sides and sliders 8 on the side plates. The sliders 8 cooperate with the sliding grooves 7 to achieve smooth sliding and lateral limiting.

[0021] The base plate 4 is an adjustable width structure, consisting of a left base plate 9 and a right base plate 10. The left base plate 9 is fixed to the left side plate 5, and a support block 11 is provided on the inner side of its bottom, and a connecting plate 12 is provided on the outer side of its bottom to form a slot. The right base plate 10 is slidably inserted into the slot and fixed to the right side plate 6, and a connecting block is provided on the outer side of its bottom.

[0022] The spring connector 3 includes a telescopic rod 13 and a compression spring 14 sleeved on it. Both ends of the telescopic rod 13 are connected to the connecting plate 12, and both ends of the compression spring 14 also abut against the connecting plate 12 for buffering telescopic movement. The telescopic rod 13 can be a threaded rod structure and is equipped with a locking nut to adjust the telescopic limit. A dustproof bellows sleeve is fitted over the spring to prevent dust intrusion. The support block 11 is a detachable component, fixed with bolts for easy maintenance.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 cable tray expansion joint, comprising two cable trays arranged on the same straight line, with a gap between the two cable trays and connected by the expansion joint, characterized in that, The expansion joint includes two symmetrically arranged cable tray connectors on the left and right sides, which are respectively connected to the cable trays on the left and right sides. Several spring connectors are provided between the two cable tray connectors. Each cable tray connector includes a base plate, a left side plate, and a right side plate. The left and right sides of the cable tray have sliding grooves. Each of the left and right side plates has a slider connected to the sliding groove of the cable tray. The width of the base plate is adjustable. The base plate includes a left base plate and a right base plate, which are connected to the left side plate. A support block is provided on the inner bottom side of the left base plate, and a connecting plate is provided on the outer bottom side of the left base plate. The left base plate forms a slot with the cable tray through the support block and the connecting plate. The right base plate slides in the slot and is connected to the right side plate. A connecting block is also provided on the outer bottom side of the right base plate. The spring connectors include a telescopic rod, whose two ends are respectively connected to the connecting plates of the left and right cable tray connectors. A compression spring is provided on the outer side of the telescopic rod, and its two ends are also connected to the connecting plates.

2. The cable tray expansion joint according to claim 1, characterized in that, The sliding groove on the cable tray is a T-shaped groove, and the sliders on the left and right side plates are T-shaped sliders. The two work together to achieve lateral limiting.

3. The cable tray expansion joint according to claim 1, characterized in that, The contact surfaces of the left and right bottom plates are provided with a wear-resistant coating to reduce sliding friction.

4. The cable tray expansion joint according to claim 1, characterized in that, The telescopic rod is an adjustable threaded rod with locking nuts at both ends to fix the maximum telescopic range of the telescopic joint.

5. A cable tray expansion joint according to claim 1, characterized in that, The compression spring is fitted with a dustproof corrugated tube on its outer side to prevent dust from entering the spring and affecting its elastic performance.

6. A cable tray expansion joint according to claim 1, characterized in that, The support block is a detachable structure, fixed to the left base plate with bolts, which facilitates replacement or height adjustment.

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