Multi-column parallel cable bridge and construction method thereof

Abstract

The invention provides a multi-column parallel cable bridge and a construction method thereof, and relates to the technical field of cable bridges. The cable bridge comprises a trunk line bridge, branch bridges and connecting pieces. A rectangular through hole is formed in the bottom of a groove body of the trunk line bridge; the connecting piece comprises a back plate, a pair of side plates and a pair of lug plates, the two ends of the back plate are matched with the rectangular through hole and the branch bridge frame in width respectively, the side plates are arranged on the side faces of the back plate so that guide grooves can be formed between the back plate and the side plates, and the lug plates are arranged on the end faces of the side plates; the connecting piece is arranged on the opposite side of the groove body of the trunk line bridge, and the inlet end of the connecting piece is communicated with the rectangular through hole; each branch bridge comprises a straight part and a bent part, the bent parts are vertically attached to the inner sides of the ends of the straight parts, and each branch bridge is provided with an inner groove; the bending part of the branch bridge is sleeved on the outer side of the outlet end of the connecting piece; and the groove body of the trunk line bridge, the rectangular through hole, the connecting piece and the inner groove of the branch bridge form a cable channel. The rectangular through holes and the connecting pieces can fix the bridge frame, and space occupation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cable bridges, in particular to a multi-row parallel cable bridge and a construction method thereof. Background Art

[0002] In electrical construction, bridge construction is an important part of the construction. In the process of laying bridges, it is often necessary to lay multiple columns of bridges side by side on the same layer, and lead out branches at the positions close to each bridge, and the branches are further laid side by side on the same layer. In order to meet the requirements of subsequent wire and cable laying, when the trunk bridge leads out branches, it is usually necessary to bend each column of bridge. The overturned multiple columns of bridges occupy a large amount of construction space, resulting in the space not being fully utilized. Summary of the invention

[0003] In order to solve the technical problem that in order to meet the requirements of subsequent wire and cable laying in the prior art, each column of the cable tray usually needs to be bent when the trunk cable tray leads out a branch. The flipped multi-column cable tray occupies a large amount of construction space, resulting in the space not being fully utilized, the embodiment of the present invention provides a multi-column parallel cable tray and a construction method thereof. The technical solution is as follows:

[0004] On the one hand, a multi-column parallel cable bridge is provided, the cable bridge comprising: a trunk bridge, a branch bridge and a connector;

[0005] A rectangular through hole is provided at the bottom of the trough of the trunk bridge;

[0006] The connecting member comprises a back plate, a pair of side plates and a pair of ear plates, the two ends of the back plate are respectively matched with the width of the rectangular through hole and the branch bridge, the pair of side plates are arranged on the side of the back plate to form a guide groove between the back plate and the side plates, and the ear plates are arranged on the end surfaces of the side plates;

[0007] The connecting piece is arranged on the opposite side of the slot body of the trunk bridge, and the inlet end of the connecting piece is communicated with the rectangular through hole;

[0008] The branch bridge frame includes a straight portion and a bent portion, the bent portion is vertically attached to the inner side of the end of the straight portion, and the branch bridge frame has an inner groove;

[0009] The bending portion of the branch bridge is sleeved on the outer side of the outlet end of the connector, and the slot body of the trunk bridge, the rectangular through hole, the connector and the inner slot of the branch bridge form a cable channel.

[0010] Optionally, the length of the rectangular through hole is equal to the width of the branch bridge plus twice the cable bending radius, and the width is equal to the height of the branch bridge.

[0011] Optionally, the back plate includes a trapezoidal portion and a rectangular portion;

[0012] The short sides of the trapezoidal portion are connected to the rectangular portion.

[0013] Optionally, the backplane further includes an extension portion, which is connected to a long side of the trapezoidal portion and is used to connect to the trunk bridge.

[0014] Optionally, the side plate includes a guide plate and a reinforcement plate, the guide plate is connected to the trapezoidal portion, the reinforcement plate is connected to the rectangular portion, and the guide plate and the reinforcement plate are connected in a smooth transition.

[0015] Optionally, an anti-slip layer is provided in the guide groove of the connecting member.

[0016] Optionally, the trunk bridge, the branch bridge and the connecting piece are made of the same material.

[0017] Optionally, the ear plate is a right triangle.

[0018] On the other hand, a method for constructing a multi-row parallel cable tray is also provided, the method comprising:

[0019] Measure the dimensions of the trunk bridge and branch bridge;

[0020] Based on the size of the branch bridge and the cable bending requirements, obtain the size of the rectangular through hole and the size of the connector;

[0021] Based on the size of the rectangular through hole, a hole is opened at a preset position of the trunk bridge;

[0022] Based on the size of the connecting parts, make the back panel, side panels and ear panels;

[0023] The back plate, the side plate and the ear plate are connected in sequence, and the side plate is arranged on the side of the back plate to form the connecting piece;

[0024] The branch line bridge is bent to form a bent portion;

[0025] The trunk bridge, the connector, and the bending portion of the branch bridge are connected in sequence.

[0026] Optionally, the obtaining of the rectangular through hole size and the connector size based on the branch bridge size and the cable bending requirement further includes:

[0027] Conduct stress analysis according to the specifications and load levels of the bridge;

[0028] Verify that the vertical load borne by the connector does not exceed its bearing capacity.

[0029] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0030] The multi-row parallel cable bridge provided by the embodiment of the present invention can fix the connector and the branch bridge and lead out the cables by opening rectangular through holes at the target positions on the trunk bridge. The structural design of the connector and the branch bridge can not only meet the bridge load, but also realize the parallel arrangement of multiple rows of cables, avoid occupying a large amount of construction space, and improve the space utilization and work efficiency of cable management. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a structural schematic diagram of a multi-row parallel cable tray provided by an embodiment of the present invention;

[0033] Figure 2 is a structural schematic diagram of a branch cable provided by an embodiment of the present invention;

[0034] Figure 3 is a structural schematic diagram of a connecting piece provided by an embodiment of the present invention;

[0035] Figure 4 is a structural schematic diagram of a backplane provided by an embodiment of the present invention;

[0036] Figure 5 is a structural schematic diagram of a side panel provided by an embodiment of the present invention;

[0037] Figure 6 is a structural schematic diagram of an ear plate provided by an embodiment of the present invention;

[0038] Figure 7 This is one of the schematic diagrams for analyzing the force of the connector provided in the embodiment of the present invention;

[0039] Figure 8 This is the second schematic diagram of the force analysis of the connecting member provided in the embodiment of the present invention;

[0040] Fig. 9 This is the third schematic diagram of the force analysis of the connecting member provided in the embodiment of the present invention;

[0041] Fig.10 This is the fourth schematic diagram of the force analysis of the connecting member provided in the embodiment of the present invention;

[0042] Fig.11 This is the fifth schematic diagram of the force analysis of the connecting member provided in the embodiment of the present invention;

[0043] Fig.12 This is the sixth schematic diagram of the force analysis of the connecting member provided in the embodiment of the present invention;

[0044] Fig.13 This is the seventh schematic diagram of the force analysis of the connecting member provided in the embodiment of the present invention;

[0045] Fig.14 This is the eighth schematic diagram of the force analysis of the connecting member provided in the embodiment of the present invention;

[0046] Fig.15 It is a flow chart of a method for constructing a multi-row parallel cable tray provided in an embodiment of the present invention.

[0047] Reference numerals:

[0048] 1. Trunk bridge;

[0049] 2. branch bridge; 21. straight portion; 22. bending portion; 23. inner groove;

[0050] 3. Connectors;

[0051] 31. back plate; 311. trapezoidal portion; 312. rectangular portion; 313. extension portion;

[0052] 32, side plate; 321, guide plate; 322, reinforcement plate;

[0053] 33. Ear plate. DETAILED DESCRIPTION

[0054] The technical solution of the present invention is described below in conjunction with the accompanying drawings.

[0055] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0056] There are currently two construction plans for branching out of multiple rows of bridges.

[0057] One method is to bend the trunk bridge and make room for other specialties. This method will lead to the compression of construction space, often resulting in increased construction difficulty and cost.

[0058] The other method is to customize the finished elbow, and the branch line is connected to the finished elbow. This method requires the elbow to be customized in advance, but if the plan changes, the elbow will not be usable. And for the emergency plan made temporarily, the manufacturer's processing cycle often cannot meet the needs of on-site use.

[0059] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0060] An embodiment of the present invention provides a multi-row parallel cable bridge, which includes: a trunk bridge 1, a branch bridge 2 and a connector 3.

[0061] A rectangular through hole is provided at the bottom of the trough of the trunk bridge 1 for connection with the connector 3 and the branch bridge 2 .

[0062] The connector 3 includes a back plate 31, a pair of side plates 32 and a pair of ear plates 33. The two ends of the back plate 31 are matched with the width of the rectangular through hole and the branch bridge 2 respectively to ensure stable connection. A pair of side plates 32 are arranged on the side of the back plate 31 to form a guide groove between the back plate 31 and the side plates 32 for guiding the cables. The ear plates 33 are arranged on the end faces of the side plates 32 to protect the cables and play a role in strengthening the structure.

[0063] The connector 3 is arranged on the opposite side of the slot of the trunk bridge 1, and the inlet end of the connector 3 is connected to the rectangular through hole, so as to lead the cable out of the trunk bridge 1 without occupying the space of the slot of the trunk bridge 1. For example, if the slot of the trunk bridge 1 is upward, the connector 3 is arranged at the bottom of the trunk bridge 1 and connected to the rectangular through hole.

[0064] The branch bridge 2 includes a straight portion 21 and a bent portion 22. The bent portion 22 is vertically attached to the inner side of the end of the straight portion 21, and the branch bridge 2 has an inner groove 23 for accommodating cables. The setting of the bent portion 22 is conducive to fixing with the connecting portion and can also strengthen the structure.

[0065] The bending portion 22 of the branch bridge 2 is sleeved on the outside of the outlet end of the connector 3. The slot body of the trunk bridge 1, the rectangular through hole, the connector 3, and the inner slot 23 of the branch bridge 2 form a cable channel for protecting the cable from interference and damage from the external environment and ensuring the normal operation of the cable.

[0066] The structural design of the connector 3 and the branch bridge 2 can not only meet the bridge load, but also enable the trunk bridge 1 and the branch bridge 2 to be flexibly connected, which is convenient for the arrangement and maintenance of cables.

[0067] During construction, a rectangular through hole can be opened at a target position on the trunk bridge 1, and a branch bridge 2 can be formed by transforming the ordinary bridge, and the trunk bridge 1 and the branch bridge 2 can be connected by the connector 3 to form a cable channel. Through the combination of the trunk bridge 1, the branch bridge 2 and the connector 3, the parallel arrangement of multiple columns of cables can be realized.

[0068] When construction is carried out according to the embodiment of the present invention and multiple rows of bridge frames are branched, the vertical space of the trunk and branches can be uniformly controlled within the range of the trunk bridge frame 1 height + the branch bridge frame height + the spacing, without generating unnecessary space occupation, thereby greatly improving space utilization.

[0069] The multi-row parallel cable bridge provided by the embodiment of the present invention can fix the connector 3 and the branch bridge 2 and lead out the cables by opening a rectangular through hole at a target position on the trunk bridge 1. The structural design of the connector 3 and the branch bridge 2 can not only meet the bridge load, but also realize the parallel arrangement of multiple rows of cables, avoid occupying a large amount of construction space, and improve the space utilization and work efficiency of cable management.

[0070] In one embodiment provided by the present invention, the length of the rectangular through hole is equal to the width of the branch bridge 2 plus twice the bending radius of the cable, so as to ensure that the cable has enough space to bend when passing through the through hole, while avoiding excessive bending or squeezing, thereby protecting the integrity and performance of the cable. The width of the rectangular through hole is equal to the height of the branch bridge 2, so as to ensure that the branch bridge 2 can smoothly pass through the through hole while maintaining the stability and compactness of the structure.

[0071] This design ensures that there is enough space for cables and branch bridges 2 to operate during installation and maintenance, while reducing potential damage to cables and bridges, further avoiding occupying a large amount of construction space, and improving space utilization and work efficiency of cable management.

[0072] Specifically, 1. Measure the dimensions of the trunk bridge 1 and the branch bridge 2, and drill holes at relevant positions of the trunk bridge 1. The hole length = B (width of the branch bridge 2) + 2r (bending radius), and the width = height h of the branch bridge 2.

[0073] The value of the bending radius r can be found in the Technical Specifications for Steel Cable Trays (T / CECS31-2017). See Table 1:

[0074] Table 1

[0075]

[0076] In one embodiment provided by the present invention, the back plate 31 includes a trapezoidal portion 311 and a rectangular portion 312; the trapezoidal portion 311 has a set of opposite sides that are parallel but of different lengths, which can be called long sides and short sides. The short side of the trapezoidal portion 311 is connected to the rectangular portion 312, and this connection method can ensure that the back plate 31 has a certain strength and stability in structure. The design of the trapezoidal portion 311 ensures that a sufficient bending radius is reserved for the cable to avoid damage to the cable.

[0077] Further, in an embodiment provided by the present invention, the back plate 31 also includes an extension portion 313, and the extension portion 313 is connected to the long side of the trapezoidal portion 311. The extension portion 313 can provide an additional connection point or support surface for connecting the trunk bridge 1. Specifically, the extension portion 313 can be inserted into the rectangular through hole and fixedly connected to the trunk bridge 1. There can be multiple connection structures between the extension portion 313 and the trunk bridge 1, such as bolt connection, adhesive connection, etc., which are not limited in this embodiment.

[0078] By designing the extension 313 as a connection point compatible with the trunk bridge 1, the back panel 31 can be used as an integrated component to simplify the installation and maintenance of the cable management system.

[0079] For example, the back plate can be made of a steel plate with the same thickness as the steel plate of the linear bridge. The back plate is connected to the bridge by bolts. The bolts are round head connection bolts specially used for bridges. Figure 4 and Table 2:

[0080] Table 2

[0081]

[0082]

[0083] Furthermore, in an embodiment provided by the present invention, the side plate 32 includes a guide plate 321 and a reinforcing plate 322 , the guide plate 321 is connected to the trapezoidal portion 311 , the reinforcing plate 322 is connected to the rectangular portion 312 , and the guide plate 321 and the reinforcing plate 322 are connected with a smooth transition.

[0084] The guide plate 321 can provide a guide or positioning function for the cable, and may be used to guide the cable, wire harness or other components to move or fix along a specific path.

[0085] The reinforcing plate 322 can provide additional support and strength to resist external pressure or load that the side plate 32 may be subjected to. By connecting with the rectangular portion 312, the reinforcing plate 322 may help to disperse stress and improve the stability and durability of the entire structure.

[0086] A smooth transition connection is achieved between the guide plate 321 and the reinforcement plate 322. This connection may adopt a curve, a rounded corner or other smooth transition forms. The benefits of a smooth transition connection include reducing stress concentration, increasing the overall strength of the structure, improving the appearance, and possibly reducing noise and vibration. In practical applications, this design may help ensure that the side plate 32 maintains its integrity and functionality under various loads and conditions.

[0087] Specifically, the side plate 32 can be made of a steel plate, and its thickness is the same as that of the linear bridge steel plate. The side plate 32 is connected to the bridge by welding and bolting. The bolts are round head connection bolts specially used for bridges, and the side plate 32 is connected to the back plate 31 by welding. Figure 5 and Table 3:

[0088] Table 3

[0089]

[0090]

[0091] In one embodiment provided by the present invention, an anti-skid layer is provided in the guide groove of the connector 3, which can increase the friction between the guide groove and the cable, prevent the cable from slipping, and thus improve the stability and reliability of the connection. Specifically, the material of the anti-skid layer can be rubber, plastic, fiber or other materials with anti-skid properties.

[0092] This design can also reduce the risk of components coming loose or falling off due to vibration or external forces. In addition, the anti-slip layer may also provide additional cushioning and shock absorption, helping to protect the cable from damage.

[0093] The connection mechanism between the trunk bridge 1, the branch bridge 2 and the connector 3 can be a clamp, a hook, a bolt, a nut, etc., which is used to ensure the stability and integrity of the bridge system.

[0094] In one embodiment provided by the present invention, the trunk bridge 1, the branch bridge 2 and the connector 3 are made of the same material. The materials can be obtained on site to make the connector 3, which saves time and effort and is relatively convenient. By using the same tools, methods and materials to handle these components, it helps to simplify the production, installation and maintenance processes. In addition, since all components can maintain stable performance under the same temperature and humidity conditions, the same material may also improve the compatibility and reliability of the entire bridge system.

[0095] For example, the trunk bridge 1, the branch bridge 2 and the connector 3 are made of metal (such as steel, aluminum), plastic, composite materials and the like.

[0096] In one embodiment provided by the present invention, the ear plate 33 is a right triangle. One of its right angles can be connected to the reinforcing plate 322. When in use, the other right angle can be connected to the branch bridge 2 to form a stable structure. The ear plate 33 structure can enhance the stability of the connection and optimize the space utilization.

[0097] Specifically, the ear plate 33 is made of steel plate, and the connection method is welding. Figure 7 and Table 4:

[0098] Table 4

[0099]

[0100]

[0101] The present invention does not require the customization of finished elbows, and can be processed using on-site conditions, which effectively solves the problem of scheme changes and processing cycles. The present invention has undergone strict force calculations and fully meets the load requirements specified in the specifications when processed according to the instructions. When constructed according to the method of the present invention, when multiple rows of bridge frames are branched, the vertical space of the main line and the branch can be uniformly controlled within the range of the main line bridge frame 1 height + branch line bridge frame height + spacing, without generating excess space occupation, greatly improving space utilization.

[0102] In a specific embodiment, steel trough (tray) cable trays are laid in rows, and when branching out, space resources can be greatly saved. For example, 6 200x100mm cable trays are laid in rows for the trunk line, and 6 200x100mm cable trays are branched out. The vertical space occupied by the traditional method is 1100mm, and after adopting this patent, the vertical space occupied is 400mm.

[0103] The multi-row parallel cable bridge provided by the embodiment of the present invention can fix the connector 3 and the branch bridge 2 and lead out the cables by opening a rectangular through hole at a target position on the trunk bridge 1. The structural design of the connector 3 and the branch bridge 2 can not only meet the bridge load, but also realize the parallel arrangement of multiple rows of cables, avoid occupying a large amount of construction space, and improve the space utilization and work efficiency of cable management.

[0104] Furthermore, the combined components can be processed on demand at the construction site to minimize the impact on the construction period. And the combined components have been strictly calculated to meet the load requirements specified in relevant specifications.

[0105] This embodiment also provides a method for constructing a multi-row parallel cable tray, the method comprising:

[0106] 1501. Measure the dimensions of the trunk bridge 1 and the branch bridge 2.

[0107] This step can provide a basis for subsequent steps.

[0108] 1502. Based on the size of the branch bridge 2 and the cable bending requirements, obtain the size of the rectangular through hole and the size of the connector 3.

[0109] According to the size of the branch bridge 2 and the specific requirements of the cable bending, it is necessary to calculate the required rectangular through-hole size and the precise size of the connector 3. This step is crucial to ensure that the cable can pass smoothly and maintain the stability of the structure.

[0110] 1503. Based on the size of the rectangular through hole, a hole is opened at a preset position of the trunk bridge 1.

[0111] According to the size of the rectangular through hole obtained in the previous step, a through hole needs to be accurately opened at a preset position of the trunk bridge 1 so that the cable can pass through smoothly.

[0112] 1504. Based on the size of the connector 3, make the back panel 31, the side panel 32 and the ear panel 33.

[0113] In this step, the back plate 31, the side plate 32 and the ear plate 33 need to be customized according to the size of the connector 3. These components will together constitute the connector 3, which plays the role of connecting and supporting the trunk bridge 1 and the branch bridge 2.

[0114] 1505. Connect the back plate 31, the side plate 32 and the ear plate 33 in sequence, and set the side plate 32 on the side of the back plate 31 to form a connecting piece 3.

[0115] In this step, the back plate 31, the side plate 32 and the ear plate 33 may be connected in sequence by welding, which has high structural strength, saves space, and can ensure the stability and integrity of the bridge system.

[0116] 1506. Bend the branch line bridge to form a bending portion 22.

[0117] The provision of the bent portion 22 is conducive to fixation with the connecting portion and can also strengthen the structure so that it can better match and connect with the trunk bridge 1 and the connecting piece 3.

[0118] 1507. Connect the trunk bridge 1, the connector 3, and the bending portion 22 of the branch bridge in sequence.

[0119] The connection mechanism between the trunk bridge 1, the branch bridge 2 and the connector 3 can be a clamp, a hook, a bolt, a nut, etc., which is used to ensure the stability and integrity of the bridge system.

[0120] Further, in an embodiment provided by the present invention, based on the size of the branch bridge 2 and the cable bending requirements, the size of the rectangular through hole and the size of the connector 3 are obtained, and then, the following is further included:

[0121] 1508. Carry out stress analysis according to the specifications and load levels of the bridge.

[0122] First, it is necessary to collect the specification information of the bridge, including material type, cross-sectional size, span, etc. At the same time, it is also necessary to clarify the load level that the bridge bears, which usually includes the weight of the cable, possible wind load, snow load and other possible dynamic or static loads.

[0123] Using structural analysis software or manual calculation, a mechanical model of the bridge is established based on the collected data. This model should be able to accurately reflect the stress conditions of the bridge in actual use.

[0124] The model is subjected to stress analysis and parameters such as stress, strain and displacement under various loads are calculated to evaluate the strength and stability of the bridge.

[0125] Specifically, after checking the table, the safe working load of the tray (steel trough cable tray) is shown in Table 5:

[0126] Table 5

[0127]

[0128]

[0129] Plate thickness (mm), see Table 6:

[0130] Table 6

[0131] Pallet width B Tank Cover B＜300 1.2 1 300≤B<500 2 1.2 500≤B<800 3 1.5

[0132] Import the bridge model into the force analysis software. According to the "Steel Cable Tray Design Code" and "Steel Structure Design Standard", set the material to Q235, the steel thickness ≤ 16mm, and the tensile, compressive and bending resistance to 215N / mm 2 The distance between the suspender and the connector 3 is set to 600mm. The vertical load borne by the connector 3 is: load level * 0.6 / 2. Please refer to the design strength index of the steel shown in Table 7 (N / mm 2 ):

[0133] Table 7

[0134]

[0135] Calculate the 4 load levels according to the most unfavorable factors:

[0136] See also Figure 7-Figure 8 For load level A (650N / m) and selected specification 60x40mm, a tensile force of not less than 200N (650x0.6 / 2) is applied to the bottom of connector 3. The maximum stress of connector 3 with specification 60x40mm is calculated to be less than 215N / mm. 2 , meeting the specification requirements.

[0137] See also Figure 9-10 For load level B (1800N / m) and selected specification 250x50mm, a tensile force of not less than 550N (1800x0.6 / 2) is applied to the bottom of connector 3. The maximum stress of connector 3 with specification 250x50mm is calculated to be less than 215N / mm. 2 , meeting the specification requirements.

[0138] See also Figure 11-Figure 12For load level C (2600N / m) and selected specification 450x60mm, a tensile force of not less than 800N (2600x0.6 / 2) is applied to the bottom of connector 3. The maximum stress of connector 3 with specification 450x60mm is calculated to be less than 215N / mm. 2 , meeting the specification requirements.

[0139] See also Figure 13-14 For load level D (3250N / m) and selected specification 800x100mm, a tensile force of not less than 980N (3250x0.6 / 2) is applied to the bottom of connector 3. The maximum stress of connector 3 with specification 800x100mm is calculated to be less than 215N / mm. 2 , meeting the specification requirements.

[0140] 1509. Determine and verify that the vertical load borne by connector 3 does not exceed its bearing capacity.

[0141] Based on the analysis results, evaluate whether the bridge meets the design requirements and safety standards.

[0142] If the analysis results meet the requirements, subsequent construction can be carried out. For example, the data can be summarized into data statistics software according to the conditions given in the specification to form an electronic processing order. By entering the size of the trunk bridge 1 and the size of the linear bridge in the electronic processing order, the size of the back plate 31, the side plate 32, the ear plate 33 and the corresponding number of connecting bolts can be obtained.

[0143] If the analysis result does not meet the requirements, it may be necessary to adjust the design or specifications of the bridge or take other reinforcement measures, for example, the material of the connector 3 may be adjusted.

[0144] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0145] In the present invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0146] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0147] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A multi-row parallel cable tray, characterized in that: The cable bridge comprises: a trunk bridge, a branch bridge and connectors; A rectangular through hole is provided at the bottom of the trough of the trunk bridge; The connecting member comprises a back plate, a pair of side plates and a pair of ear plates, the two ends of the back plate are respectively matched with the width of the rectangular through hole and the branch bridge, the pair of side plates are arranged on the side of the back plate to form a guide groove between the back plate and the side plates, and the ear plates are arranged on the end surfaces of the side plates; The connecting piece is arranged on the opposite side of the slot body of the trunk bridge, and the inlet end of the connecting piece is communicated with the rectangular through hole; The branch bridge frame includes a straight portion and a bent portion, the bent portion is vertically attached to the inner side of the end of the straight portion, and the branch bridge frame has an inner groove; The bending portion of the branch bridge is sleeved on the outer side of the outlet end of the connector, and the slot body of the trunk bridge, the rectangular through hole, the connector and the inner slot of the branch bridge form a cable channel.

2. The multi-row parallel cable tray according to claim 1, characterized in that: The length of the rectangular through hole is equal to the width of the branch bridge plus twice the cable bending radius, and the width is equal to the height of the branch bridge.

3. The multi-row parallel cable tray according to claim 1, characterized in that: The back plate includes a trapezoidal portion and a rectangular portion; The short sides of the trapezoidal portion are connected to the rectangular portion.

4. The multi-row parallel cable tray according to claim 3, characterized in that: The backplane further comprises an extension portion, which is connected to a long side of the trapezoidal portion and is used for connecting to the trunk bridge.

5. The multi-row parallel cable tray according to claim 3, characterized in that: The side plate includes a guide plate and a reinforcement plate. The guide plate is connected to the trapezoidal portion, and the reinforcement plate is connected to the rectangular portion. The guide plate and the reinforcement plate are connected in a smooth transition.

6. The multi-row parallel cable tray according to claim 1, characterized in that: An anti-slip layer is arranged in the guide groove of the connecting piece.

7. The multi-row parallel cable tray according to claim 1, characterized in that: The trunk bridge, the branch bridge and the connecting piece are made of the same material.

8. The multi-row parallel cable tray according to claim 1, characterized in that: The ear plate is a right triangle.

9. A method for constructing a multi-row parallel cable tray, characterized in that: The method comprises: Measure the dimensions of the trunk bridge and branch bridge; Based on the size of the branch bridge and the cable bending requirements, obtain the size of the rectangular through hole and the size of the connector; Based on the size of the rectangular through hole, a hole is opened at a preset position of the trunk bridge; Based on the size of the connecting parts, make the back panel, side panels and ear panels; The back plate, the side plate and the ear plate are connected in sequence, and the side plate is arranged on the side of the back plate to form the connecting piece; The branch line bridge is bent to form a bent portion; The trunk bridge, the connector, and the bending portion of the branch bridge are connected in sequence.

10. The method for constructing multiple parallel cable trays according to claim 9, characterized in that: The method further comprises: obtaining the rectangular through hole size and the connector size based on the branch bridge size and the cable bending requirement; and then: Conduct stress analysis according to the specifications and load levels of the bridge; Verify that the vertical load borne by the connector does not exceed its bearing capacity.

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