Cable bridge and forming method thereof

Abstract

The invention relates to a cable bridge and a forming method thereof.The cable bridge comprises a bottom plate and two side plates, the middle portions, in the length direction, of the two side plates are base plates, one ends of the base plates are provided with closing-in plates, the closing-in plates are inserted into the other ends of the cable bridges, and the two cable bridges are spliced end to end to extend; one end of the base plate is provided with a closing plate, the closing plate is provided with a first connecting hole, the other end of the base plate is provided with a second connecting hole, one of the first connecting hole and the second connecting hole is a horizontal waist-shaped hole, the other one is a vertical waist-shaped hole, and the two cable bridges are connected and fixed by arranging fasteners at the first connecting hole and the second connecting hole. The cable bridges can be spliced end to end for extension, no connecting plate needs to be arranged between the cable bridges, the number of parts can be reduced, cost is reduced, and installation is more convenient. And by adopting the closing-up mode, the material at the closing-up plate can be thickened, the strength is increased, and the overall strength of the cable bridge is better.

Description

Technical Field

[0001] The present application relates to the technical field of cable trays, and in particular to a cable tray and a forming method thereof. Background Art

[0002] A cable tray is a support structure for laying wires and cables, and is commonly used in commercial buildings, industrial facilities, offices, hospitals, etc. Cable trays can organize wires and cables into a neat, easy-to-manage layout, while providing protection and isolation from dust, and have the advantage of being easy to maintain.

[0003] For example, a cable tray is disclosed in a Chinese patent application with publication number CN110061464A. Adjacent cable trays are extended and spliced ​​by connecting plates and screws. A special connecting plate is required, which is costly. When splicing, the end faces of adjacent cable trays must be aligned so that the connecting plate and the cable tray can be fixed. The installation is not convenient and needs to be improved. Summary of the invention

[0004] In order to solve the technical problems that a special connecting plate needs to be provided when the existing cable tray is extended and spliced, and the installation is relatively troublesome, the present invention provides a cable tray and a forming method thereof.

[0005] On the one hand, the technical solution provided by the present application is as follows: a cable tray, comprising a bottom plate and two side plates, wherein the middle part of the two side plates along the length direction is a base plate, and a closing plate is provided at one end of the base plate, which is inserted into the other end of the cable tray so that the two cable trays are spliced ​​and extended head to tail; a first connecting hole is provided on the closing plate, and a second connecting hole is provided at the other end of the base plate, wherein one of the first connecting hole and the second connecting hole is a horizontal waist-shaped hole, and the other is a vertical waist-shaped hole, and the two cable trays are connected and fixed by fasteners arranged at the first connecting hole and the second connecting hole.

[0006] By adopting the above technical solution: the present application sets a closing plate at one end of the cable tray. When splicing and extending, the closing plate is inserted into the other end of the base plate, so that the two cable trays are spliced ​​and extended head to tail. There is no need to set a connecting plate between the cable trays, which can reduce the number of parts and reduce costs; after the cable trays are spliced ​​head to tail, they are wrapped inside and outside, and the relative positions of the upper and lower parts are fixed. There is no need to spend effort to align the end faces of adjacent cable trays, which makes installation more convenient; after the cable trays are spliced ​​head to tail, a height difference will be generated at the splicing point, so the present application designs one of the first connecting hole and the second connecting hole as a vertical waist-shaped hole to adapt to the height difference generated during installation and the possible wiring drop during installation. The other of the first connecting hole and the second connecting hole is designed as a horizontal waist-shaped hole to solve the docking error of horizontal installation, and can be extended and retracted within a certain range to improve the adaptability of installation. The use of the closing method can make the material at the closing plate thicker, increase the strength, and improve the overall strength of the cable tray.

[0007] Preferably, a flaring plate is provided at the other end of the substrate opposite to the closing plate, the expansion dimension of the flaring plate is 0.6t-0.8t, the contraction dimension of the closing plate is 0.6t-0.8t, t is the sheet metal thickness of the cable tray, the substrate, flaring plate and closing plate of the side panel and the bottom plate are formed by one-time bending, the closing plate is inserted into the flaring plate, so that the two cable trays are spliced ​​and extended with each other at the head and tail; the second connecting hole is arranged on the flaring plate.

[0008] Preferably, the upper edge of the base plate is provided with a flange, and the upper edges of the closing plate and the expanding plate are respectively provided with a first notch and a second notch, so that the upper edges of the expanding plate and the closing plate are lower than the upper edge of the base plate.

[0009] Preferably, the rounded corners at the bends between the base plate and the bottom plate are R1, the rounded corners at the bends between the closing plate and the bottom plate are R2, and the rounded corners at the bends between the expanding plate and the bottom plate are R3, wherein R3>R1>R2.

[0010] Preferably, a first reinforcing rib is formed at the bending part of the bottom plate and the side plate, a second reinforcing rib is formed on the bottom plate, and a third reinforcing rib is formed on the side plate. The second and third reinforcing ribs are connected to the first reinforcing ribs to form composite reinforcing ribs. There are multiple composite reinforcing ribs, which are arranged in an array along the length direction of the bridge frame.

[0011] Preferably, the first reinforcing rib is in an arc shape and extends for a distance along the length direction of the bridge frame, and the second reinforcing rib and the third reinforcing rib have the same shape, both of which are trapezoidal.

[0012] Preferably, the closer the second reinforcing ribs and the third reinforcing ribs are to the bending parts of the bottom plate and the side plate, the greater their depths are.

[0013] Preferably, the bottom plate is further provided with a fourth reinforcing rib for enhancing the strength of the bottom plate, and the side plate is further provided with a fifth reinforcing rib for enhancing the strength of the side plate.

[0014] On the other hand, the present application also provides the following technical solution: a method for forming the cable tray described above, comprising the following steps: S1, cutting out sheet metal panels; S2, punching out a first connecting hole and a second connecting hole on the sheet metal plate; S3, bend out two side panels; S4, punch out closing plates on the two side plates.

[0015] In a third aspect, the present application also provides the following technical solution: a method for forming the cable tray described above, comprising the following steps: Preferably, S1, cutting out a sheet metal plate; S2, punching out closing plates and expanding plates at four corners of the sheet metal plate, and punching out a first connecting hole and a second connecting hole at the same time; S3, bend the first side panel at one time; S4, bend the second side panel at one time.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. The ends of the cable trays of the present application can be spliced ​​and extended, and there is no need to set connecting plates between the cable trays, which can reduce the number of parts, reduce costs, and make installation more convenient; 2. The closing method can make the material at the closing plate thicker, increase the strength, and improve the overall strength of the cable tray; 3. The first reinforcing rib, the second reinforcing rib and the third reinforcing rib of the present application form a combined reinforcing rib, which can significantly increase the strength of the bending parts of the bottom plate and the side plate. The depths of the first reinforcing rib, the second reinforcing rib and the third reinforcing rib can be designed to be shallower to avoid excessive wrinkling or even rupture of the reinforcing rib at the bending parts of the bottom plate and the side plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front perspective view of the first embodiment of the cable tray described in the present application; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 is a front perspective view of another angle of the first embodiment of the cable tray described in the present application; Figure 4 It is a rear perspective view of the first embodiment of the cable tray described in the present application; Figure 5 yes Figure 4 Enlarged view of point B in the middle; Figure 6 is a top view of the first embodiment of the cable tray described in the present application; Figure 7 This is a schematic diagram of the action of mutually splicing the cable tray embodiment 1 described in the present application; Figure 8 This is a schematic diagram of the state of the cable tray embodiment 1 of the present application after splicing; Fig. 9 is a partial cross-sectional view of the cable tray embodiment 1 of the present application after splicing; Fig.10 It is a front perspective view of the second embodiment of the cable tray described in the present application; Fig.11 It is a front perspective view of another angle of the second embodiment of the cable tray described in the present application; Fig.12 is a top view of the second embodiment of the cable tray described in the present application; Fig.13 This is a schematic diagram of the state of the cable tray embodiment 2 of the present application after splicing; Fig.14 It is a partial cross-sectional view of the cable tray embodiment 2 described in the present application after splicing.

[0018] Explanation of the reference numerals: 100, cable tray; 1, bottom plate; 11, second reinforcing rib; 12, fourth reinforcing rib; 2, side plate; 21, base plate; 211, flange; 22, closing plate; 221, first notch; 23, first connecting hole; 24, second connecting hole; 25, expansion plate; 251, second notch; 26, third reinforcing rib; 27, fifth reinforcing rib; 3, first reinforcing rib. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-Figure 14 This application is described in further detail.

[0020] Embodiment 1: Reference Figures 1 to 9 The present embodiment discloses a cable tray 100, comprising a bottom plate 1 and two side plates 2, wherein the middle portion of the two side plates 2 along the length direction is a base plate 21, and a closing plate 22 is provided at one end of the base plate 21, and the closing plate 22 is inserted into the other end of the cable tray 100, so that the two cable trays 100 are spliced ​​and extended with each other head to tail; a first connecting hole 23 is provided on the closing plate 22, and a second connecting hole 24 is provided at the other end of the base plate 21, wherein one of the first connecting hole 23 and the second connecting hole 24 is a horizontal waist-shaped hole, and the other is a vertical waist-shaped hole, and the two cable trays 100 are connected and fixed by fasteners (not shown) provided at the first connecting hole 23 and the second connecting hole 24.

[0021] The distance that the closing plate 22 shrinks inwards should be greater than 1t, where t is the sheet metal thickness of the cable tray 100, otherwise it cannot be inserted and spliced. Here and below, it refers to the single-side distance. The preferred value of the distance that the closing plate 22 shrinks inwards is 1.8t-2t, and the head and tail of the cable tray 100 are clearance-matched (single-side clearance is 0.8t-1t), which makes assembly easier.

[0022] Reference Figure 1 and Figure 2 The upper edge of the base plate 21 is provided with a flange 211, the upper edge of the closing plate 22 is provided with a first notch 221, and the other end of the side plate 2 is provided with a second notch 251, so that the two cable trays 100 can be spliced ​​up and down or axially (in the length direction). The flange 211 can increase the strength of the cable tray 100, especially the axial bending resistance, and improve the bearing capacity.

[0023] Reference Figure 2 and Figure 5 The first reinforcing rib 3 is formed at the bending part of the bottom plate 1 and the side plate 2, the second reinforcing rib 11 is formed on the bottom plate 1, and the third reinforcing rib 26 is formed on the side plate 2. The second reinforcing rib 11 and the third reinforcing rib 26 are both connected with the first reinforcing rib 3 to form a composite reinforcing rib. There are multiple composite reinforcing ribs, which are arranged in an array along the length direction of the cable tray 100. The sizes of the first reinforcing rib 3, the second reinforcing rib 11 and the third reinforcing rib 26, as well as the spacing of the array, need to be adjusted according to the actual size of the cable tray 100.

[0024] Reference Figure 2 and Figure 5 The first reinforcing rib 3 is in an arc shape and extends a certain distance along the length direction of the cable tray. Properly lengthening the length of the first reinforcing rib 3 can increase the effect of the first reinforcing rib 3. The second reinforcing rib 11 and the third reinforcing rib 26 have the same shape, forming a symmetrical structure, which has a beautiful appearance and a more balanced reinforcing effect. Specifically, the second reinforcing rib 11 and the third reinforcing rib 26 are both in a trapezoidal shape. The closer the second reinforcing rib 11 and the third reinforcing rib 26 are to the bends of the bottom plate 1 and the side plate 2, the greater the depth is, which has a transition effect, is easier to process, and is not easy to wrinkle.

[0025] Reference Figure 1 The bottom plate 1 is also provided with a fourth reinforcing rib 12 for enhancing the strength of the bottom plate 1, and the side plate 2 is also provided with a fifth reinforcing rib 27 for enhancing the strength of the side plate 2. The size and spacing of the fourth reinforcing rib 12 and the fifth reinforcing rib 27 need to be reasonably arranged according to the actual size of the cable tray 100.

[0026] The present application has a first reinforcing rib 3 formed at the bending part of the bottom plate 1 and the side plate 2, a second reinforcing rib 11 formed on the bottom plate 1, and a third reinforcing rib 26 formed on the side plate 2. The second reinforcing rib 11 and the third reinforcing rib 26 are both connected to the first reinforcing rib 3 to form a composite reinforcing rib, which can significantly increase the strength of the bending part of the bottom plate 1 and the side plate 2; and the depths of the first reinforcing rib 3, the second reinforcing rib 11 and the third reinforcing rib 26 can be designed to be shallower to avoid excessive wrinkling or even rupture of the reinforcing ribs at the bending part of the bottom plate 1 and the side plate 2 due to stretching.

[0027] The method for forming the cable tray 100 of this embodiment includes the following steps: S1, cutting out sheet metal panels; S2, punching out a first connection hole 23 and a second connection hole 24 on the sheet metal plate; and punching out a fourth reinforcing rib 12 and a fifth reinforcing rib 27 at the same time; S3, first bend the first flange 211 on the sheet metal plate, then bend the first side panel 2, then bend the second flange 211, and then bend the second side panel 2; S4, punching out the closing plates 22 on the two side plates 2; S5, integrally stamping out the first reinforcing rib 3, the second reinforcing rib 11 and the third reinforcing rib 26.

[0028] The present application sets a closing plate 22 at one end of the cable tray 100. When the two cable trays 100 are spliced ​​and extended, the closing plate 22 is inserted into the other end of the base plate 21, so that the two cable trays 100 are spliced ​​and extended head to tail. There is no need to set a connecting plate between the cable trays 100, which can reduce the number of parts and reduce costs. After the cable trays 100 are spliced ​​head to tail, they are wrapped inside and outside, and the relative positions of the upper and lower parts are fixed. There is no need to spend effort to align the end faces of adjacent cable trays 100, and the installation is more convenient. After the cable trays 100 are spliced ​​head to tail, a height difference will be generated at the splicing point, so the present application designs one of the first connecting hole 23 and the second connecting hole 24 as a vertical waist-shaped hole to adapt to the height difference generated during installation and the possible wiring drop during installation. The other of the first connecting hole 23 and the second connecting hole 24 is designed as a horizontal waist-shaped hole to solve the docking error of horizontal installation, and can be expanded and contracted within a certain range to improve the adaptability of installation. By adopting the closing method, the material at the closing plate 22 can be made thicker and the strength can be increased, thereby improving the overall strength of the cable tray 100.

[0029] Embodiment 2: Reference Figures 10 to 14The difference between this embodiment and the first embodiment is that a flaring plate 25 is provided at the other end of the substrate 21 opposite to the closing plate 22, that is, a closing plate 22 is provided at one end of the cable tray 100, and a flaring plate 25 is provided at the other end, and the closing plate 22 is inserted into the flaring plate 25, so that the two cable trays 100 are spliced ​​and extended at the head and tail; the second connecting hole 24 is provided on the flaring plate 25.

[0030] If the forming method in the first embodiment is still adopted, the closing plate 22 and the expanding plate 25 need to be punched out separately, which requires many steps and high cost. It is only necessary to select one of the closing plate 22 and the expanding plate 25, and it is not necessary to set both.

[0031] To this end, this embodiment limits the expansion size of the expansion plate 25 to 0.6t-0.8t, and the contraction size of the closing plate 22 to 0.6t-0.8t, where t is the sheet metal thickness of the cable tray 100. Since the deviation distance between the closing plate 22, the expansion plate 25 and the base plate 21 is very small, the base plate 21, the expansion plate 25 and the closing plate 22 of the side plate 2 and the bottom plate 1 can be formed by one-time bending. In the first embodiment, the contraction size of the closing plate 22 is 1.8t-2t, and the deviation size is large. Direct bending easily causes a large overall deformation of the closing plate 22.

[0032] Reference Fig.10 and Fig.11 The fillet at the bend between the base plate 21 and the bottom plate 1 is R1, the fillet at the bend between the closing plate 22 and the bottom plate 1 is R2, and the fillet at the bend between the flaring plate 25 and the bottom plate 1 is R3, wherein R3>R1>R2. In this way, the drop at the entire bend is reduced, with a transition effect, making bending easier and less prone to wrinkling, and the deformation of the closing plate 22 and the flaring plate 25 is also smaller and within an allowable range.

[0033] Reference Fig.10 The upper edge of the base plate 21 is provided with a flange 211, and the upper edges of the closing plate 22 and the expanding plate 25 are respectively provided with a first notch 221 and a second notch 251, so that the upper edges of the expanding plate 25 and the closing plate 22 are lower than the upper edge of the base plate 21. In this way, the two cable trays 100 can be spliced ​​up and down or axially.

[0034] The method for forming the cable tray 100 of this embodiment includes the following steps: S1, cutting out sheet metal panels; S2, punch out the closing plate 22 and the expanding plate 25 at the four corners of the sheet metal plate, punch out the first connecting hole 23 and the second connecting hole 24, and punch out the fourth reinforcing rib 12 and the fifth reinforcing rib 27; S3, bending the first side panel 2 at one time; S4, bending out the second side panel 2 at one time; S5, integrally stamping out the first reinforcing rib 3, the second reinforcing rib 11 and the third reinforcing rib 26.

[0035] This embodiment limits the expansion size of the expansion plate 25 and the contraction size of the closing plate 22, as well as limits the radius of the bends between the base plate 21 and the bottom plate 1, the radius of the bends between the closing plate 22 and the bottom plate 1, and the radius of the bends between the expansion plate 25 and the bottom plate 1, and the size transition relationship between the three radiuses, thereby achieving the technical effect that the base plate 21, the expansion plate 25, the closing plate 22 and the bottom plate 1 of the side panel 2 can be formed by one-time bending, with fewer steps, almost no increase in cost, easier bending, less wrinkling, and smaller deformation of the closing plate 22 and the expansion plate 25, which are within an allowable range.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cable tray, comprising a bottom plate (1) and two side plates (2), characterized in that: The middle part of the two side plates (2) along the length direction is a base plate (21), one end of the base plate (21) is provided with a closing plate (22), the closing plate (22) is inserted into the other end of the cable tray (100), so that the two cable trays (100) are spliced ​​and extended head to tail; the closing plate (22) is provided with a first connecting hole (23), and the other end of the base plate (21) is provided with a second connecting hole (24), one of the first connecting hole (23) and the second connecting hole (24) is a horizontal waist-shaped hole, and the other is a vertical waist-shaped hole, and the two cable trays (100) are connected and fixed by fasteners arranged at the first connecting hole (23) and the second connecting hole (24).

2. The cable tray according to claim 1, characterized in that: An expansion plate (25) is provided at the other end of the base plate (21) opposite to the closing plate (22); the expansion size of the expansion plate (25) is 0.6t-0.8t, and the contraction size of the closing plate (22) is 0.6t-0.8t, where t is the sheet metal thickness of the cable tray (100); the base plate (21), the expansion plate (25) and the closing plate (22) of the side plate (2) and the bottom plate (1) are formed by one-time bending; the closing plate (22) is inserted into the expansion plate (25) so that the two cable trays (100) are spliced ​​and extended at the head and tail; and the second connection hole (24) is provided on the expansion plate (25).

3. The cable tray according to claim 2, characterized in that: The upper edge of the base plate (21) is provided with a flange (211), and the upper edges of the closing plate (22) and the expanding plate (25) are respectively provided with a first notch (221) and a second notch (251), so that the upper edges of the expanding plate (25) and the closing plate (22) are lower than the upper edge of the base plate (21).

4. The cable tray according to claim 2, characterized in that: The rounded corner at the bend between the base plate (21) and the bottom plate (1) is R1, the rounded corner at the bend between the closing plate (22) and the bottom plate (1) is R2, and the rounded corner at the bend between the expanding plate (25) and the bottom plate (1) is R3, wherein R3>R1>R2.

5. The cable tray according to claim 2, characterized in that: A first reinforcing rib (3) is also formed at the bending portion of the bottom plate (1) and the side plate (2), a second reinforcing rib (11) is formed on the bottom plate (1), and a third reinforcing rib (26) is formed on the side plate (2), the second reinforcing rib (11) and the third reinforcing rib (26) are both connected to the first reinforcing rib (3) to form a composite reinforcing rib, and the composite reinforcing ribs are in plurality and arranged in an array along the length direction of the cable tray (100).

6. The cable tray according to claim 5, characterized in that: The first reinforcing rib (3) is arc-shaped and extends a distance along the length direction of the cable tray (100); the second reinforcing rib (11) and the third reinforcing rib (26) are of the same shape, both being trapezoidal.

7. The cable tray according to claim 6, characterized in that: The closer the second reinforcing rib (11) and the third reinforcing rib (26) are to the bending positions of the bottom plate (1) and the side plate (2), the greater their depths.

8. The cable tray according to claim 5, characterized in that: The bottom plate (1) is also provided with a fourth reinforcing rib (12) for enhancing the strength of the bottom plate (1), and the side plate (2) is also provided with a fifth reinforcing rib (27) for enhancing the strength of the side plate (2).

9. A method for forming the cable tray according to claim 1, characterized in that: The following steps are involved: S1, cutting out sheet metal panels; S2, punching out a first connection hole (23) and a second connection hole (24) on the sheet metal plate; S3, bending out two side panels (2); S4, punching out closing plates (22) on the two side plates (2).

10. A method for forming a cable tray according to any one of claims 2 to 8, characterized in that: The following steps are involved: S1, cutting out sheet metal panels; S2, punching out closing plates (22) and expanding plates (25) at four corners of the sheet metal plate, and punching out a first connecting hole (23) and a second connecting hole (24); S3, bending the first side panel (2) at one time; S4, bend out the second side panel (2) at one time.

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