Bent part mounting structure of power distribution cabinet bridge

Abstract

The utility model provides a power distribution cabinet bridge bending position installation structure, which comprises a groove box body formed by a first straight groove box, a bending groove box part and a second straight groove box, the end parts of the first straight groove box, the bending groove box part and the second straight groove box are mutually overlapped and fixedly connected, a bending protection plate is arranged in the groove box body, and the bending protection plate comprises an arc-shaped plate and extension sections extending outwards from the two ends of the arc-shaped plate. The length of the extension section is larger than the length of the overlapping position between the first straight groove box and the bent groove box part or the length of the overlapping position between the bent groove box part and the second straight groove box, and a wire passing space is reserved between the bent protection plate and the inner side box wall of the bent groove box part. According to the utility model, the bending protection plate is arranged at the bending part of the groove box body, and the extension parts at the two ends cover the rivet head of the rivet or the bolt used for connecting the groove box, so that the end part of the cable is contacted with the protection plate when the cable passes through the groove box, and the cable is prevented from being contacted with the protruding rivet head; therefore, risks in the use process caused by the fact that the nail head scratches or damages the cable sheath in the cable threading process are prevented.

Description

Technical Field

[0001] This utility model belongs to the field of cable tray wiring technology for power distribution cabinets, and in particular relates to an installation structure at the bend of a cable tray in a power distribution cabinet. Background Technology

[0002] Distribution cabinets are typically installed in distribution rooms. During installation, power cables need to be brought in from the outside and then run into the cabinet. To protect the cables, they are usually placed in cable trays. During construction, the cable trays are often installed first, and then the cables are passed through them. Existing cable trays typically have dedicated elbows for connections at bends, or are connected using multiple short metal segments. To ensure connection strength, multiple bolts or rivets are used for fixing. After this connection, the bolts or rivets protrude from the cable tray. When inserting the cable, the cable at the bend will contact the inner wall of the cable tray. Due to the cable's elasticity, it may come into contact with nuts or other parts, or be guided by the outer curved plate at the bend. This can easily cause damage to the cable sheath at the contact point with the nuts or the cable end, leading to cable leakage or reduced cable life, and potentially causing accidents during long-term use. Utility Model Content

[0003] In view of this, the present invention aims to provide an installation structure at the bend of the cable tray in a power distribution cabinet, so as to protect the cables at the bend of the cable tray.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A cable tray bending installation structure for a power distribution cabinet includes a first straight cable tray, a bent cable tray section, and a second straight cable tray arranged sequentially along the cable passage direction. The ends of the first straight cable tray, the bent cable tray section, and the second straight cable tray overlap and are fixedly connected to form a cable tray body. A bending guard plate is provided inside the cable tray body. The bending guard plate includes an arc-shaped plate and extension sections extending outward from both ends of the arc-shaped plate. The length of the extension sections is greater than the length of the overlap between the first straight cable tray and the bent cable tray section or the overlap between the bent cable tray section and the second straight cable tray. A cable passage space is left between the bending guard plate and the inner wall of the bent cable tray section.

[0006] Furthermore, a guide plate extends obliquely from the end of the extension section near the first straight slot box towards the wall of the slot box body on the side away from the wire passage space.

[0007] Furthermore, the bottom of the first straight slot box has an insertion hole, and a connecting piece extends from the bottom of the guide piece, which can pass through the insertion hole to the bottom of the straight slot box.

[0008] Furthermore, a support piece extends from the end of the extension section near the second straight slot box toward the wall of the slot box body on the side away from the wire passage space.

[0009] Furthermore, the bottom of the second straight slot box has an insertion hole, and a connecting piece extends from the bottom of the support piece, which can pass through the insertion hole to the bottom of the straight slot box.

[0010] Furthermore, the connecting piece itself can be bent, and one side surface of the bent connecting piece can fit against the lower surface of the slot body.

[0011] Furthermore, the connecting piece is bent outward toward the bending guard plate.

[0012] Furthermore, a through hole is provided on the side wall of the bent groove box away from the wire passage space, a nut is embedded in the through hole, a set screw is screwed to the nut, and the end of the set screw can be tightly pressed against the arc plate.

[0013] Furthermore, one end of the nut extends outward with a flange, which is placed inside the bending groove box and can abut against the edge of the through hole.

[0014] Furthermore, a gasket is provided on the arc-shaped plate, and the end of the set screw abuts against the gasket.

[0015] Compared with the prior art, the installation structure at the bend of the cable tray in the power distribution cabinet described in this utility model has the following advantages:

[0016] This utility model adopts a bending guard plate at the bending point of the cable tray body and covers the nail heads of the rivets or bolts used to connect the cable tray with the extensions at both ends. This allows the cable end to contact the guard plate when the cable passes through the cable tray, thus avoiding contact between the cable and the protruding nail heads. This prevents the nail heads from scratching or damaging the cable sheath during cable threading, which could lead to risks during use.

[0017] The inclined guide plate is used to guide the cable during insertion, preventing direct contact between the cable and the end of the extension section, which could scratch the cable.

[0018] By using connecting pieces on the guide plate and support plate to pass through the bottom of the trough body, the bending guard plate is fixed in a predetermined position inside the trough body, preventing the cable from contacting the bending guard plate and causing the bending guard plate to shift.

[0019] A top screw is used to abut against the arc-shaped plate to prevent the arc-shaped plate from deforming due to stress during or after cable installation. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall cable tray installation structure.

[0022] Figure 2 This is a schematic diagram of the structure of the set screw and the bent guard plate.

[0023] Figure 3 This is an exploded view of the set screw mounting structure.

[0024] Figure 4 This is a schematic diagram of the connection structure between the bent guard plate and the slot box body.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Slot box body; 11-First straight slot box; 12-Bent slot box section; 13-Second straight slot box; 131-Insertion hole; 14-Overlapping area; 15-Wire passage space; 16-Protective gap; 2-Bent guard plate; 21-Arc plate; 22-Extension section; 23-Support plate; 24-Guide plate; 25-Connecting plate; 26-Washer; 3-Setting screw; 4-Nut; 41-Flange. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] The installation structure at the bend of the power distribution cabinet cable tray of this utility model includes a first straight slot box 11, a bent slot box portion 12, and a second straight slot box 13. The ends of the first straight slot box 11, the bent slot box portion 12, and the second straight slot box 13 overlap each other and are fixed together by bolts or rivets to form a slot box body 1. In this embodiment, the first straight slot box, the bent slot box portion 12, and the second straight slot box 13 are sequentially sleeved from the inside to the outside along the cable passage direction. That is, along the cable passage direction, the first straight slot box 11 overlaps on the bent slot box portion 12, and the bent slot box portion 12 overlaps on the second straight slot box 13. This avoids the cable end abutting against the step formed after the slot box overlaps when the cable passes through, which would cause the cable to be scratched.

[0032] The slot box body 1 is provided with a bent guard plate 2. The bent guard plate 2 includes an arc-shaped plate 21 and extension sections 22 extending outward from both ends of the arc-shaped plate 21. The length of the extension section 22 is greater than the length of the overlap 14 between the first straight slot box 11 and the bent slot box part 12 or the overlap 14 between the bent slot box part 12 and the second straight slot box 13. This allows the bolts or rivets at each overlap 14 covered by the extension section 22 to penetrate the nail heads inside the slot box body 1. The bent guard plate 2 and the bent slot box 13 are also connected. A wire-passing space 15 is provided between the inner walls of the box portion 12. Specifically, a wire-passing space 15 is provided between the bent guard plate 2 and the inner wall of the bent box portion 12 of the box body 1 (i.e., the side with the shorter arc length), and a protective gap 16 is provided between the bent guard plate 2 and the outer wall of the box body 1 (i.e., the side with the longer arc length). The head of the bolt or rivet used to connect the overlapping part 14 is placed in the protective gap 16, and the cable passes through the wire-passing space 15 when it enters the box body 1. A guide piece 24 extends from the end of the extension section 22 near the first straight box 11 towards the box wall of the box body 1 on the side away from the wire-passing space 15. A support piece 23 extends from the end of the extension section 22 near the second straight box 13 towards the box wall of the box body 1 on the side away from the wire-passing space 15. The ends of the guide piece 24 and the support piece 23 respectively abut against the box wall of the box body 1 on the side near the protective gap 16. The guide plate 24 and the support plate 23 extend downwards to form connecting plates 25. The bottom of the first straight groove box 11 and the second straight groove box 13 are respectively provided with insertion holes 131. The connecting plates 25 at both ends of the bent guard plate 2 can pass through the insertion holes 131 to the bottom of the groove box body 1. Then, the installer can bend the connecting plates 25 with tools such as pliers or hammers, so that the connecting plates 25 bend outwards towards the side of the bent guard plate 2, that is, towards the side of the protective gap 16, so that the connecting plates 25 fit against the bottom of the groove box body 1, preventing the connecting plates 25 protruding from the bottom of the groove box body 1 from causing danger to the surrounding environment. In order to improve the connection strength of the bent guard plate 2, bolts, rivets or the like can also be passed through the bent connecting plates 25 for reinforcement. During cable threading, bending can occur through contact between the cable end and the bending guard plate, or the operator can bend the cable and place it into the cable tray. In both of these processes, the cable sheath or end contacts the bending guard plate under movement or elastic action, preventing the nail heads protruding from the inside of the cable tray from scratching or damaging the cable sheath.

[0033] A through hole is provided on the side wall of the bent slot box 12 away from the wire passage space 15. More specifically, a through hole is provided on the side wall of the bent slot box 12 on the side of the protective gap 16 of the slot box body 1. A nut 4 is embedded in the through hole, and a set screw 3 is screwed to the nut 4. The end of the set screw 3 can be tightly pressed against the arc plate 21. More specifically, one end of the nut 4 extends outward to form a flange 41. The flange 41 is placed inside the bent slot box 12 and can abut against the edge of the through hole. The arc-shaped plate 21 is provided with a gasket 26. When the set screw 3 is screwed into the slot body 1, the end of the set screw 3 is pressed tightly against the gasket 26 of the arc-shaped plate 21. At the same time, the nut 4 is subjected to a reverse force, so that the flange 41 is pressed tightly against the outer wall of the slot body 1, thereby providing support to the outer side of the bending guard plate 2. When the cable enters the bending part of the cable tray, the cable abuts against the bending guard plate 2, and the set screw 3 prevents the bending guard plate 2 from being deformed by force.

[0034] Those skilled in the art should know that the slot box body is also provided with a top cover (not shown in the figure), and the two sides of the top cover are located outside the slot box body and do not interfere with the internal bent protective plate.

[0035] 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 mounting structure for the bend in a cable tray of a power distribution cabinet, comprising a first straight slot box, a bent slot box portion, and a second straight slot box, wherein the ends of the first straight slot box, the bent slot box portion, and the second straight slot box overlap and are fixedly connected to form a slot box body, characterized in that: The slot box body is provided with a bending guard plate, which includes an arc plate and extension sections extending outward from both ends of the arc plate. The length of the extension section is greater than the length of the overlap between the first straight slot box and the bent slot box part or the overlap between the bent slot box part and the second straight slot box. A line passage space is left between the bending guard plate and the inner wall of the bent slot box part.

2. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 1, characterized in that: A guide plate extends from the end of the extension section near the first straight slot box, inclined toward the wall of the slot box body on the side away from the wire passage space.

3. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 2, characterized in that: The bottom of the first straight slot box has an insertion hole, and a connecting piece extends from the bottom of the guide piece. The connecting piece can pass through the insertion hole to the bottom of the straight slot box.

4. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 3, characterized in that: A support piece extends from the end of the extension section near the second straight slot box toward the wall of the slot box body on the side away from the wire passage space.

5. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 4, characterized in that: The bottom of the second straight slot box has an insertion hole, and a connecting piece extends from the bottom of the support piece. The connecting piece can pass through the insertion hole to the bottom of the straight slot box.

6. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 3 or 4, characterized in that: The connecting piece itself can be bent, and one side surface of the bent connecting piece can fit against the lower surface of the slot body.

7. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 6, characterized in that: The connecting piece is bent outward toward the arc-shaped plate.

8. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 1, characterized in that: A through hole is opened on the side wall of the bent slot box away from the wire passage space. A nut is embedded in the through hole, and a set screw is screwed to the nut. The end of the set screw can be tightly pressed against the arc plate.

9. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 8, characterized in that: One end of the nut extends outward with a flange, which is placed inside the bent groove box and can abut against the edge of the through hole.

10. The installation structure at the bend of the cable tray in a power distribution cabinet according to claim 8, characterized in that: The arc-shaped plate is provided with a gasket, and the end of the set screw abuts against the gasket.

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