Rear-mounted cable support

Abstract

The utility model discloses a back-mounted cable support, which comprises a plurality of support units arranged in parallel along the vertical direction, each support unit comprises a cross arm and two mounting seats respectively connected to two ends of the cross arm, and the two mounting seats are respectively used for being fixed on two opposite side walls of a cable channel. For a cable channel where cables are laid, the cables can be layered firstly, then the support units are installed layer by layer from bottom to top, in this way, the cables can be smoothly erected in a layered mode, the defects of a traditional support when the cable channel where the cables are laid is refitted are effectively overcome, and the cable channel with the cables is improved. The method can better adapt to various complex conditions in actual engineering. The cable is layered, and then the support units are installed layer by layer, so that the cable can be erected layer by layer, the existing cable can be supported and isolated, the problem of mutual winding and extrusion between the cables is effectively avoided, the risk that the cable is damaged due to external force is reduced, and safe operation of the cable is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of power equipment, and in particular to a rear-mounted cable bracket. Background Art

[0002] At present, the cable trench supports widely used in the market generally adopt a pre-installed mode. Specifically, during the construction phase of the cable trench, construction workers will firmly install the cable trench supports on the inner wall of the cable trench according to the predetermined position and spacing based on the design drawings and planning requirements. After the support installation work is completed, the subsequent cable laying work will be carried out. This traditional installation sequence has its rationality. In new cable trench projects, pre-installed supports can ensure that the cables have a stable support structure during the laying process. Construction workers can place the cables on the supports in an orderly manner according to the established layout plan, thereby ensuring that the cables are arranged neatly and the spacing is reasonable, effectively avoiding entanglement and squeezing between cables, reducing the risk of cable damage due to external forces, and also providing convenience for subsequent cable operation and maintenance.

[0003] However, with the continuous advancement of urban construction and the growing demand for electricity, many cable trenches, after being built and put into use for a period of time, often need to be expanded, modified, or upgraded to meet actual needs. In these cases, the cable trenches are already pre-installed with cables, but the existing cable trench support systems are not fully considered in their design to fully consider the need for modification of cable trenches already equipped with cables, thus exposing a series of serious problems.

[0004] Specifically, the traditional cable trench bracket is a pre-assembled structure, and multiple fixed cable support positions have been pre-planned on the cable trench bracket. However, due to the existence of the laid cables, during installation, the staff cannot install each of the originally laid cables separately on the various cable support positions on the cable trench bracket. Therefore, the existing cable trench bracket has many limitations when dealing with the modification scenario of cable trenches with cables, and cannot meet the needs of actual projects. Utility Model Content

[0005] The purpose of the embodiments of the present utility model is to provide a rear-mounted cable bracket that can solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above objectives, the present application proposes a rear-mounted cable bracket, comprising a plurality of bracket units arranged in parallel in an up-and-down direction, each bracket unit comprising a cross arm and two mounting bases connected to the ends of the cross arm, the two mounting bases being respectively used to be fixed to two opposite side walls of a cable channel;

[0007] The mounting base includes a fixing plate and a plug-in column. The cross arm is a tubular structure. The plug-in column is inserted from the end of the cross arm to achieve connection with the cross arm. The fixing plate is used to be fixed to the side wall of the cable channel. The plug-in column can be extended and retracted relative to the cross arm to adapt to the distance between the fixing plates on both sides.

[0008] In the bracket unit located at the lowest side, the bottom side of the fixing plate is connected to a horizontal bottom supporting plate, and the bottom supporting plate is used to abut the ground of the cable channel to provide support for the bracket unit.

[0009] In one embodiment, the fixing plate includes fixing wing plates respectively located on the front and rear sides of the plug-in column, and the fixing wing plates are provided with fixing holes, which are used to cooperate with the expansion bolts on the side walls of the cable channel so that the fixing plate can be fixed to the side walls of the cable channel.

[0010] In one embodiment, a card slot is provided on the top side of the fixing plate, and a downwardly protruding card block is provided on the bottom side. In any two upper and lower adjacent bracket units, the card block of the upper fixing plate is engaged with the card slot of the lower fixing plate to limit the relative forward and backward movement of the two upper and lower adjacent bracket units.

[0011] In one embodiment, a connecting hole is provided at the end of the cross arm, and the plug-in column is provided with a connecting long hole whose length direction is the same as the length direction of the cross arm. A connecting thread assembly passes through the connecting hole and the connecting long hole to connect and lock the cross arm and the plug-in column.

[0012] In one embodiment, a vertical support is further included, wherein the vertical support extends in an up-down direction and is detachably connected to each of the cross arms.

[0013] In one embodiment, a plurality of insulating rollers are sleeved on the cross arm, and the insulating rollers are used to support the cables.

[0014] In one embodiment, a plurality of vertical pillars are provided, and any two adjacent insulating rollers are separated by a vertical pillar.

[0015] In one embodiment, the vertical struts are connected to the cross arms via threaded connection assemblies.

[0016] The beneficial effects of the present application are as follows: Based on the independent installation and layered installation method of the rear-mounted cable bracket of the present invention, for a cable trench where cables have already been laid, the cables can be first layered, and then the bracket units can be installed layer by layer from bottom to top. In this way, the cables can be smoothly erected in layers, effectively overcoming the shortcomings of traditional brackets when modifying cable trenches that already have cables, and can better adapt to various complex situations in actual projects. By layering the cables and then installing the bracket units layer by layer, the cables can be erected in layers to achieve support and isolation of the existing cables. This function effectively avoids the problem of cables being entangled or squeezed with each other, reduces the risk of cables being damaged by external forces, and ensures the safe operation of the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of an embodiment of the rear-mounted cable support provided by the present invention being installed in a cable channel;

[0019] Figure 2 This is a structural schematic diagram of an embodiment of a rear-mounted cable bracket provided by the utility model;

[0020] Figure 3 This is an exploded schematic diagram of an embodiment of a rear-mounted cable bracket provided by the present invention;

[0021] Figure 4 A schematic structural diagram of an embodiment of a bracket unit provided by the present invention;

[0022] Figure 5 This is an exploded schematic diagram of an embodiment of a bracket unit provided by the present invention;

[0023] Figure 6 A schematic structural diagram of an embodiment of a mounting base provided by the present utility model;

[0024] Figure 7 This is a structural schematic diagram of an embodiment of the bracket unit located at the bottom provided by the present invention.

[0025] Description of Figure Numbers:

[0026] 1. Bracket unit; 11. Cross arm; 12. Mounting seat; 121. Fixing plate; 1211. Fixing wing plate; 12111. Fixing hole; 1212. Slot; 1213. Block; 1214. Bottom support plate; 122. Connecting column; 1221. Long connecting hole; 13. Insulating drum; 2. Vertical support; 3. Threaded connection assembly; 4. Cable channel.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] At present, the cable trench supports widely used in the market generally adopt a pre-installed mode. Specifically, during the construction phase of the cable trench, construction workers will firmly install the cable trench supports on the inner wall of the cable trench according to the predetermined position and spacing based on the design drawings and planning requirements. After the support installation work is completed, the subsequent cable laying work will be carried out. This traditional installation sequence has its rationality. In new cable trench projects, pre-installed supports can ensure that the cables have a stable support structure during the laying process. Construction workers can place the cables on the supports in an orderly manner according to the established layout plan, thereby ensuring that the cables are arranged neatly and the spacing is reasonable, effectively avoiding entanglement and squeezing between cables, reducing the risk of cable damage due to external forces, and also providing convenience for subsequent cable operation and maintenance.

[0032] However, with the continuous advancement of urban construction and the growing demand for electricity, many cable trenches, after being built and put into use for a period of time, often need to be expanded, modified, or upgraded to meet actual needs. In these cases, the cable trenches are already pre-installed with cables, but the existing cable trench support systems are not fully considered in their design to fully consider the need for modification of cable trenches already equipped with cables, thus exposing a series of serious problems.

[0033] Specifically, the traditional cable trench bracket is a pre-assembled structure, and multiple fixed cable support positions have been pre-planned on the cable trench bracket. However, due to the existence of the laid cables, during installation, the staff cannot install each of the originally laid cables separately on the various cable support positions on the cable trench bracket. Therefore, the existing cable trench bracket has many limitations when dealing with the modification scenario of cable trenches with cables, and cannot meet the needs of actual projects.

[0034] In order to overcome the above technical problems, refer to Figure 1-Figure 7 This embodiment provides a rear-mounted cable bracket, including a plurality of bracket units 1 arranged in parallel along the up and down directions, each bracket unit 1 includes a cross arm 11 and two mounting seats 12 respectively connected to the two ends of the cross arm 11, and the two mounting seats 12 are respectively used to be fixed to the two opposite side walls of the cable channel 4.

[0035] Specifically, the rear-mounted cable bracket provided in this embodiment is mainly composed of a number of bracket units 1 arranged in parallel along the up and down directions. Each bracket unit 1 includes a cross arm 11 and two mounting seats 12 respectively connected to the two ends of the cross arm 11. The cross arm 11 is used to support the cable, and the mounting seat 12 is used to fix the bracket unit 1 to the two opposite side walls of the cable channel 4.

[0036] Each bracket unit 1 is an independent entity and can be installed separately during the installation process. This feature allows for flexible handling when dealing with cable trenches 4 with cables. Specifically, for cable trenches 4 with cables already laid, the cables can be first layered, and then the bracket units 1 can be installed layer by layer from bottom to top. In this way, the cables can be smoothly erected in layers, achieving the purpose of supporting and isolating the existing cables.

[0037] The independent and layered installation of the rear-mounted cable support in this embodiment effectively overcomes the shortcomings of conventional supports when retrofitting cable ducts 4 already carrying cables, better adapting to the various complex situations encountered in actual projects. By arranging the cables in layers and then installing the support units 1 layer by layer, the cables can be supported and isolated in layers. This feature effectively prevents cable entanglement and compression, reduces the risk of cable damage due to external forces, and ensures safe cable operation.

[0038] In terms of structural design, mounting seats 12 are provided at both ends of each bracket unit 1, which can be fixed to the two side walls of the cable channel 4. This design ensures reliability after installation, and at the same time enables the bracket unit 1 to have a strong load-bearing capacity, which can stably support the cable and provide strong protection for the safe operation of the cable.

[0039] In one embodiment, referring to Figure 4-Figure 6 The mounting seat 12 includes a fixing plate 121 and a plug-in column 122. The cross arm 11 is a tubular structure. The plug-in column 122 is inserted from the end of the cross arm 11 to achieve connection with the cross arm 11. The fixing plate 121 is used to be fixed on the side wall of the cable channel 4; wherein, the relative telescopic adjustment of the plug-in column 122 and the cross arm 11 is used to adapt to the distance between the fixing plates 121 on both sides.

[0040] The mounting base 12 consists of a fixing plate 121 and a plug-in post 122. The fixing plate 121 secures the mounting base to the sidewall of the cable channel 4, while the plug-in post 122 is a key component for connecting the mounting base 12 to the crossarm 11. The crossarm 11 is a tubular structure, and the plug-in post 122 is inserted from the end of the crossarm 11 to achieve connection with the crossarm 11. This structure creates an adjustable connection between the mounting base 12 and the crossarm 11. The distance between the fixing plates 121 on both sides is adjusted by the relative telescopic adjustment of the plug-in post 122 and the crossarm 11, thus completing the installation of the rear-mounted cable bracket on the sidewall of the cable channel 4.

[0041] Specifically, the cable trench 4 is a cement-cast structure, and there will inevitably be obvious dimensional errors during the construction process. Based on the telescopic adjustment structure of the crossarm 11 and the mounting seat 12, during assembly, the distance between the two mounting seats 12 can be adaptively adjusted according to the specific installation position, so that the two mounting seats 12 can be tightly and reliably installed on the side walls of the cable trench 4, thereby achieving reliable support for the crossarm 11 and the cables thereon.

[0042] The telescopic and adjustable structure of this embodiment eliminates the need for complex modifications or customization due to dimensional errors during installation, significantly improving the adaptability of the rear-mounted cable support and enabling smooth installation in cable channels 4 with varying dimensional variations. By adjusting the distance between the two mounting brackets 12, each securely and snugly fits against the sidewalls of the cable channel 4, ensuring a secure installation. This reliable installation method provides stable support for the crossarm 11 and the cables mounted thereon, reducing issues such as bracket wobbling and cable damage caused by insecure installation, and enhancing the stability and safety of the entire cable support system.

[0043] In one embodiment, the fixing plate 121 includes fixing wing plates 1211 located on the front and rear sides of the plug-in column 122 respectively. The fixing wing plates 1211 are provided with fixing holes 12111. The fixing holes 12111 are used to cooperate with the expansion bolts on the side walls of the cable channel 4 to fix the fixing plate 121.

[0044] During installation, first drill holes in the side wall of the cable trench 4 and install expansion bolts, then place the fixing plate 121 at a suitable position on the side wall of the cable trench 4, align the fixing holes 12111 and pass the expansion bolts through, and then tighten the nuts on the expansion bolts to firmly fix the fixing plate 121 on the side wall.

[0045] In this embodiment, the fixed wing plates 1211 located on the front and rear sides of the plug-in column 122 are fixed to the side wall through the fixing holes 12111 and the expansion screws. The front and rear wing plates cooperate with each other to form a stable fixing system. This design can prevent the fixing plate 121 from rotating or shaking when subjected to external force, thereby ensuring the stability of the installation of the bracket unit 1.

[0046] In one embodiment, a slot 1212 is provided on the top side of the fixing plate 121, and a downwardly protruding block 1213 is provided on the bottom side. In the two upper and lower adjacent bracket units 1, the block 1213 of the upper fixing plate 121 is engaged with the slot 1212 of the lower fixing plate 121 to limit the relative forward and backward movement of the two upper and lower adjacent bracket units 1.

[0047] In this embodiment, when two upper and lower adjacent bracket units 1 are installed, the block 1213 of the upper fixing plate 121 will be embedded in the slot 1212 of the lower fixing plate 121. Because the shapes and sizes of the slot 1212 and the block 1213 match each other, the block 1213 is constrained within the slot 1212, thereby limiting the relative movement of the two upper and lower adjacent bracket units 1 in the front-to-back direction. For example, when the bracket is subjected to external forces in the front-to-back direction, the engagement between the block 1213 and the slot 1212 will prevent relative front-to-back displacement between the bracket units 1. Through this engagement connection, the multiple bracket units 1 form an interconnected whole in the vertical direction. The stability of each bracket unit 1 depends not only on its own fixation to the side wall of the cable channel 4, but also on the constraints of the adjacent bracket units 1, thereby improving the stability of the entire rear-mounted cable bracket system.

[0048] In one embodiment, referring to Figure 7 In the bracket unit 1 located at the bottom, a horizontal bottom support plate 1214 is connected to the bottom side of the fixing plate 121. The bottom support plate 1214 is used to abut the ground of the cable channel 4 to provide support for the bracket unit 1.

[0049] The contact between the bottom support plate 1214 and the ground increases the contact area between the bracket unit 1 and the ground, improving the vertical stability of the bracket unit 1. At the same time, combined with the fixation of the fixing plate 121 to the side wall, the bracket unit 1 is effectively fixed and supported in both the horizontal and vertical directions, forming a stable support system.

[0050] In one embodiment, a connecting hole is provided at the end of the cross arm 11, and the plug-in column 122 is provided with a connecting long hole 1221 whose length direction is the same as the length direction of the cross arm 11. The connecting thread assembly passes through the connecting hole and the connecting long hole 1221 to connect and lock the cross arm 11 and the plug-in column 122.

[0051] During the installation process, insert the plug-in column 122 into the end of the crossarm 11 so that the connecting hole at the end of the crossarm 11 is aligned with the connecting long hole 1221 on the plug-in column 122. Then, pass the connecting threaded components (such as bolts and nuts) through the connecting hole and the connecting long hole 1221. By tightening the nut, the friction force and mechanical bite force of the thread are used to tightly connect the crossarm 11 and the plug-in column 122 together to achieve locking of the two.

[0052] Since the plug-in column 122 is provided with a connecting long hole 1221 with the same length direction as the cross arm 11, the depth of the plug-in column 122 inserted into the cross arm 11 can be adjusted according to actual needs during connection, that is, the position of the connecting thread component in the connecting long hole 1221 can be moved. After adjusting to the appropriate position, the connecting thread component is tightened to fix it, thereby realizing the adjustment of the relative position between the cross arm 11 and the plug-in column 122. This adjustable structure can ensure that the mounting seats 12 on both sides can be tightly and reliably installed on the side walls of the cable trench 4.

[0053] In this embodiment, a connecting thread assembly is used to pass through the connecting hole and the connecting long hole 1221 for connection and locking, which can provide sufficient connection strength. When the bracket unit 1 bears the weight of the cable and possible external forces, this connection method can ensure that the cross arm 11 and the plug column 122 will not loosen or separate, thereby ensuring the stability and reliability of the bracket system. The design of the connecting long hole 1221 allows the connection position of the cross arm 11 and the plug column 122 to be adjusted according to actual conditions. When faced with cable channels 4 of different sizes or different installation requirements, construction personnel can flexibly adjust the depth of the plug column 122 inserted into the cross arm 11 to ensure that the bracket unit 1 can be accurately installed in the appropriate position, thereby improving the adaptability and flexibility of the installation.

[0054] In one embodiment, referring to Figure 2-Figure 3 , and also includes a vertical support 2, which extends in the up and down directions and is detachably connected to each cross arm 11.

[0055] The vertical pillar 2 extends in the up and down direction. When connected to the cross arm 11, the vertical pillar 2 bears the vertical downward gravity from the cross arm 11 and the cables thereon. Since the vertical pillar 2 itself has good bending and compression resistance, it can transfer the gravity to the ground or other supporting structures, thereby achieving effective support for the cross arm 11 and the cables.

[0056] The detachable connection makes the installation and removal of the vertical support 2 and the cross arm 11 more convenient. During the installation process, according to the actual situation of the cable channel 4 and the laying requirements of the cables, each bracket unit 1 can be installed in place first to achieve layered support for each cable, and then the vertical support 2 can be installed. This can avoid the problem of interference between the vertical support 2 and the cables and adapt to the installation conditions of the cable channel 4 with cables.

[0057] In one embodiment, a plurality of insulating rollers 13 are sleeved on the cross arm 11 , and the insulating rollers 13 are used to support the cables.

[0058] Crossarm 11, a key component of the cable support, supports and secures the cables. Its length and strength provide a foundation for the installation of insulating drums 13. Sleeved on crossarm 11, insulating drums 13 can rotate freely or remain relatively fixed on the crossarm 11 (depending on the specific design). Multiple drums 13 can be arranged based on the actual number of cables and installation requirements.

[0059] When a cable is placed on the insulating drum 13, it supports the cable's weight through its connection to the crossarm 11 and its own structural strength. Due to its load-bearing capacity, the insulating drum 13 evenly distributes the cable's weight across the crossarm 11, providing stable support for the cable. The insulating drum 13 is rotatable on the crossarm 11. When the cable is subjected to external forces (such as thermal expansion and contraction caused by temperature changes or cable movement), the insulating drum 13 rotates with the cable. This rotation reduces friction between the cable and the crossarm 11, preventing damage to the cable and extending its service life.

[0060] In one embodiment, a plurality of vertical pillars 2 are provided, and any two adjacent insulating rollers 13 are separated by a vertical pillar 2 .

[0061] The vertical pillars 2 divide the entire cable support area into multiple relatively independent small areas by forming a physical separation between adjacent insulating rollers 13. The cables in each small area are supported by the corresponding insulating rollers 13. The vertical pillars 2 are responsible for separating different areas and assisting in supporting the cross arms 11, ensuring that the cables in each area can be stably supported while avoiding mutual interference between adjacent cables.

[0062] In one embodiment, the vertical support 2 and each cross arm 11 are connected via a threaded connection assembly 3 .

[0063] Specifically, corresponding threaded holes or holes (for bolts) are provided at the connection points between the vertical support 2 and the crossarm 11. During installation, the bolts are inserted through the holes in the vertical support 2 and crossarm 11, and then the nuts are tightened. The threads of the bolts and the nuts engage with each other, generating friction and mechanical restraint, tightly connecting the vertical support 2 and crossarm 11. Due to the threaded connection, when the vertical support 2 and crossarm 11 need to be disassembled, the two can be separated by simply loosening the nuts and removing the bolts from the holes. This detachability makes the bracket system more flexible and convenient during installation, maintenance, and adjustment.

[0064] This embodiment utilizes a threaded connection assembly 3, which is simple to operate and does not require complex tools or specialized techniques. Construction personnel can quickly and accurately connect the vertical support 2 to the crossarm 11, significantly reducing installation time and improving installation efficiency. Furthermore, the threaded connection exhibits excellent self-locking properties, providing sufficient connection strength after tightening the nut. When the support system is subjected to the weight of the cables and potential external forces, the threaded connection assembly 3 ensures that the vertical support 2 and crossarm 11 will not loosen or separate, thus ensuring the stability and reliability of the support system.

[0065] The above are merely exemplary embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included in the scope of protection of the present invention.

Claims

1. A rear-mounted cable bracket, characterized in that: The invention comprises a plurality of bracket units (1) arranged in parallel in the vertical direction, each bracket unit (1) comprising a cross arm (11) and two mounting seats (12) respectively connected to the two ends of the cross arm (11), and the two mounting seats (12) are respectively used to be fixed to two opposite side walls of the cable channel (4); The mounting seat (12) includes a fixing plate (121) and a plug-in column (122); the cross arm (11) is a tubular structure; the plug-in column (122) is inserted from the end of the cross arm (11) to achieve connection with the cross arm (11); the fixing plate (121) is used to be fixed on the side wall of the cable channel (4); wherein the plug-in column (122) can be extended and retracted relative to the cross arm (11) to adapt to the distance between the fixing plates (121) on both sides; In the bracket unit (1) located at the bottom, the bottom side of the fixing plate (121) is connected to a horizontal bottom support plate (1214), and the bottom support plate (1214) is used to abut against the ground of the cable channel (4) to provide support for the bracket unit (1).

2. The rear-mounted cable bracket according to claim 1, characterized in that: The fixing plate (121) includes fixing wing plates (1211) respectively located on the front and rear sides of the plug-in column (122), and the fixing wing plates (1211) are provided with fixing holes (12111). The fixing holes (12111) are used to cooperate with expansion bolts on the side walls of the cable channel (4) so ​​that the fixing plate (121) can be fixed to the side walls of the cable channel (4).

3. The rear-mounted cable bracket according to claim 1, wherein: The top side of the fixing plate (121) is provided with a card slot (1212), and the bottom side is provided with a card block (1213) protruding downwards. In any two upper and lower adjacent bracket units (1), the card block (1213) of the upper fixing plate (121) is engaged with the card slot (1212) of the lower fixing plate (121) to limit the relative forward and backward movement of the two upper and lower adjacent bracket units (1).

4. The rear-mounted cable bracket according to claim 1, wherein: The end of the cross arm (11) is provided with a connecting hole, and the plug-in column (122) is provided with a connecting long hole (1221) whose length direction is the same as the length direction of the cross arm (11). The connecting thread assembly passes through the connecting hole and the connecting long hole (1221) to connect and lock the cross arm (11) and the plug-in column (122).

5. The rear-mounted cable bracket according to any one of claims 1 to 4, characterized in that: It also includes a vertical support (2), the vertical support (2) extending in the up-down direction, and the vertical support (2) and each of the cross arms (11) are detachably connected.

6. The rear-mounted cable bracket according to claim 5, characterized in that: A plurality of insulating rollers (13) are sleeved on the cross arm (11), and the insulating rollers (13) are used to support cables.

7. The rear-mounted cable bracket according to claim 6, characterized in that: A plurality of vertical pillars (2) are provided, and any two adjacent insulating rollers (13) are separated by a vertical pillar (2).

8. The rear-mounted cable bracket according to claim 5, wherein: The vertical support (2) and each cross arm (11) are connected via a threaded connection assembly (3).

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