Cable support for cable trench and cable trench transformation method

Abstract

The invention discloses a cable support for a cable trench and a cable trench transformation method, and the cable support comprises a support main body which comprises a plurality of cross beams and vertical columns which are connected in a criss-cross manner, and the cross beams and the vertical columns are matched to separate a plurality of independent cable penetrating holes; the hoisting outer frame comprises two transverse frame strips which are arranged in parallel up and down and two vertical frame strips which are arranged in parallel left and right, and the two ends of the transverse frame strips are connected with the two vertical frame strips respectively; the two ends of the cross beam are connected with the vertical frame strips on the two sides respectively. Based on the cable bracket provided by the invention, when a cable trench is transformed, the whole cable bracket and a cable can be directly hoisted out by hoisting the outer frame, so that the construction process is greatly simplified, the construction time is shortened, and the construction efficiency is remarkably improved. As the cables do not need to be disassembled and reinstalled one by one, manual operation links are reduced, and the labor cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cable trench reconstruction, and in particular to a cable bracket for a cable trench and a cable trench reconstruction method. Background Art

[0002] In the field of power infrastructure construction and maintenance, cable trenches, as important channels for cable laying, undertake the key task of ensuring the safe and orderly operation of various cables such as power and communications.

[0003] Currently, cable trenches are typically equipped with multiple cable supports. These supports are fixed to the trench's sidewalls at regular intervals and in a specific layout. They support and secure the cables, ensuring their stability and safety within the trench. Due to the limitations of the existing cable laying structure, when the trench needs to be renovated or widened, construction workers are forced to remove the cables from the supports one by one. This process is extremely cumbersome and labor-intensive, significantly impacting construction efficiency while increasing costs and time. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a cable bracket for a cable trench and a cable trench reconstruction method, so as to simplify the cable trench construction process and improve the construction efficiency.

[0005] In order to solve the above technical problems, the present invention provides a cable support for a cable trench, comprising:

[0006] The bracket body includes a plurality of crossbeams and columns connected in a crisscross pattern, wherein the crossbeams and the columns cooperate to separate a plurality of independent cable holes;

[0007] The hoisting outer frame includes two horizontal frame bars arranged in parallel up and down and two vertical frame bars arranged in parallel left and right. The two ends of the horizontal frame bar are respectively connected to the two vertical frame bars, and the two ends of the crossbeam are respectively connected to the vertical frame bars on both sides.

[0008] Preferably, the crossbeam includes a main support tube and a telescopic connector, the telescopic connector is plugged into one end of the main support tube, the end of the main support tube away from the telescopic connector is connected to one of the vertical frame bars, and the telescopic connector is connected to the other vertical frame bar.

[0009] Preferably, the telescopic connector is provided with an adjusting long hole extending along its axial direction, and the length of the adjusting long hole is not less than the width of the cable threading hole.

[0010] Preferably, the lifting outer frame also includes an adapter, and the upper and lower ends of each vertical frame bar are respectively welded and fixed with an adapter; the adapter is provided with a connecting hole, and the two ends of the horizontal frame bar are respectively provided with laterally extending connecting long holes, and the threaded assembly passes through the connecting hole and the connecting long hole to connect and lock the adapter with the horizontal frame bar.

[0011] Preferably, the adapter includes a horizontal plate and two vertical plates vertically connected to the front and rear sides of the horizontal plate, the vertical frame bar is provided with a slot, the horizontal plate is inserted into the slot, and the two vertical plates respectively abut the front and rear side walls of the vertical frame bar; the two vertical plates are respectively provided with the connecting holes, and the horizontal frame bar is inserted between the two vertical plates so that the connecting long hole is aligned with the connecting holes on both sides.

[0012] Preferably, the vertical frame bar is provided with an insertion hole, and a support sleeve is installed in the insertion hole; the end of the crossbeam is inserted into the support sleeve and locked with the vertical frame bar and the support sleeve through a threaded assembly.

[0013] Preferably, the two vertical frame bars are respectively fixed with a fixing seat, and the fixing seat is provided with a fixing hole, and the fixing hole is adapted to the expansion bolt on the side wall of the cable trench.

[0014] Preferably, the horizontal frame bars and the vertical frame bars are both square tube structures.

[0015] The present invention also provides a cable trench reconstruction method based on the cable support, comprising the following steps:

[0016] When the cable trench cover is open, connect the lifting equipment to the lifting outer frame of the cable bracket and lift the cable bracket and the cables on it out of the cable trench at once;

[0017] Renovation of cable trenches;

[0018] Expand the capacity of the original cable bracket;

[0019] Lift the expanded cable support and the cables on it into the modified cable trench at once and secure them;

[0020] Lay new cables.

[0021] Preferably, the step of expanding the capacity of the original cable support includes:

[0022] Disassemble the vertical frame strips connected to the telescopic connector;

[0023] Connect the new main support tube to the original telescopic connector;

[0024] Connect insulating rollers in series on the new main support pipe and install new columns;

[0025] The ends of the horizontal frame strips are connected to the extended frame strips and fixed;

[0026] Install and connect the removed vertical frame bars to the new main support tubes and the ends of the extended frame bars.

[0027] The implementation of the present invention has the following beneficial effects: Based on the cable holder provided by the present invention, when the cable trench is renovated, the entire cable holder and the cable can be directly hoisted out by hoisting the outer frame, which greatly simplifies the construction process, reduces construction time, and significantly improves construction efficiency. Since there is no need to disassemble and reinstall the cables one by one, the manual operation links are reduced and the labor cost is reduced. The improvement in construction efficiency directly leads to a shortening of the construction period. The shortening of the construction period can restore the power supply or other related services more quickly, reduce the impact of the renovation on production and life, and improve the overall benefits of the project. In addition, in the traditional renovation process, frequent disassembly and installation of cables may cause mechanical damage to the cables, affecting the normal service life and performance of the cables. The cable holder of this embodiment avoids such operations, reduces the risk of cable damage, and better ensures the safety and stable operation of the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 these drawings without paying any creative work.

[0029] Figure 1 The present invention is a schematic diagram of a three-dimensional structure of a cable support for a cable trench according to an embodiment of the present invention.

[0030] Figure 2 The figure is a schematic diagram of the exploded structure of a cable support for a cable trench according to an embodiment of the present invention.

[0031] Figure 3 Schematic diagram of the three-dimensional structure of the bracket body in an embodiment of the present invention.

[0032] Figure 4 Schematic diagram of the exploded structure of the bracket body in an embodiment of the present invention.

[0033] Figure 5 Schematic diagram of the three-dimensional structure of the beam in an embodiment of the present invention.

[0034] Figure 6 Schematic diagram of the exploded structure of the beam in an embodiment of the present invention.

[0035] Figure 7Schematic diagram of the three-dimensional structure of the vertical border strip in an embodiment of the present invention.

[0036] Figure 8 Schematic diagram of the decomposed structure of the vertical border strip in an embodiment of the present invention.

[0037] Figure 9 Schematic diagram of the cable support before and after expansion in an embodiment of the present invention.

[0038] The accompanying drawings are marked as follows: 1. Bracket body; 11. Crossbeam; 111. Main support tube; 112. Telescopic connector; 1121. Adjustment long hole; 113. Insulating roller; 12. Column; 2. Lifting outer frame; 21. Vertical border bar; 22. Horizontal border bar; 23. Adapter; 231. Horizontal plate; 232. Vertical plate; 24. Fixed seat; 25. Support sleeve. DETAILED DESCRIPTION

[0039] The following descriptions of the various embodiments are made with reference to the accompanying drawings to illustrate specific embodiments in which the present invention may be implemented. In the description of the present invention, it should be understood that the terms "longitudinal," "length," "circumferential," "front," "rear," "left," "right," "top," "bottom," "inside," "outside," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0040] Please also refer to Figure 1 、 Figure 2 As shown, the first embodiment of the present invention provides a cable support for a cable trench, comprising:

[0041] The bracket body 1 includes a plurality of cross beams 11 and columns 12 connected in a crisscross pattern. The cross beams 11 and the columns 12 cooperate to separate a plurality of independent cable holes.

[0042] The hoisting outer frame 2 includes two horizontal frame bars 22 arranged in parallel up and down and two vertical frame bars 21 arranged in parallel left and right. The two ends of the horizontal frame bar 22 are respectively connected to the two vertical frame bars 21, and the two ends of the crossbeam 11 are respectively connected to the vertical frame bars 21 on both sides.

[0043] As can be seen from the above, in the embodiment of the present invention, the several beams 11 and columns 12 of the bracket body 1 are connected in a crisscross manner, and the beams 11 and the columns 12 cooperate with each other to separate a plurality of independent cable holes, and the cable holes are used to accommodate and fix cables, ensuring that the cables can be arranged in an orderly manner on the cable bracket, and ensuring the stability and safety of the cables in the cable trench.

[0044] Specifically, if Figure 3-6As shown, in one embodiment, the crossbeam 11 includes a main support tube 111 and a telescopic connector 112, the telescopic connector 112 is inserted into one end of the main support tube 111, the end of the main support tube 111 away from the telescopic connector 112 is connected to one of the vertical frame bars 21, and the telescopic connector 112 is connected to the other vertical frame bar 21.

[0045] The crossbeam 11 is composed of a main support tube 111 and a telescopic connector 112. This combined design gives the crossbeam 11 a unique telescopic function. The telescopic connector 112 is plugged into one end of the main support tube 111, forming an adjustable connection structure. The end of the main support tube 111 away from the telescopic connector 112 is connected to one of the vertical frame bars 21, while the telescopic connector 112 is connected to the other vertical frame bar 21, thereby connecting the vertical frame bars 21 on both sides.

[0046] As a cement-cast structure, cable trenches often have poor dimensional accuracy during construction due to various factors (such as the casting process and formwork accuracy). The actual spacing between the two side walls may deviate from the designed dimensions. The crossbeam 11 in the embodiment of the present invention adopts a telescopic structure, which can be adaptively adjusted according to the actual spacing between the two side walls of the cable trench during installation. By adjusting the insertion depth of the telescopic connector 112 within the main support tube 111, the length of the crossbeam 11 can be precisely controlled, ensuring that the vertical frame bars 21 on both sides can be reliably fixed to the side walls of the cable trench, effectively solving the installation difficulties caused by cable trench dimensional deviations.

[0047] In addition, the retractable structure of the crossbeam 11 makes the cable holder more widely applicable and can be used for cable trenches of different sizes. Whether it is a new cable trench or the renovation of an existing cable trench, as long as it is within a certain size range, this cable holder with a retractable crossbeam 11 can be used. There is no need to specially design and produce crossbeams 11 of different specifications for different cable trench sizes, which reduces production costs and inventory management difficulties.

[0048] Although the crossbeam 11 is retractable, after installation, a suitable locking mechanism (such as threaded locking) can ensure that the telescopic connector 112 and the main support tube 111 are firmly fixed and prevent loosening. Specifically, the threaded assembly connecting the column 12 to the crossbeam 11 can be passed through the telescopic connector 112 and the main support tube 111 to achieve relative locking of the telescopic connector 112 and the main support tube 111.

[0049] In one embodiment, the telescopic connector 112 is provided with an adjusting slot 1121 extending along its axial direction, and the length of the adjusting slot 1121 is not less than the width of the cable threading hole.

[0050] During the renovation, the capacity can be expanded directly on the original cable bracket. Specifically, the vertical frame bar 21 connected to the telescopic connector 112 can be disassembled first, and then the new main support tube 111 can be put on the telescopic connector 112 to extend the beam 11.

[0051] The telescopic connector 112 is provided with an adjustment slot 1121 extending along its axial direction. The length of the adjustment slot 1121 is set to be no less than the width of the cable threading hole. The adjustment slot 1121 provides space for adjusting the relative position between the telescopic connector 112 and the main support tube 111, and is a key structure for realizing the telescopic function of the crossbeam 11. Specifically, when the original cable support needs to be expanded, the vertical frame bar 21 connected to the telescopic connector 112 is first disassembled, and then the new main support tube 111 is sleeved onto the telescopic connector 112 to achieve the extension of the crossbeam 11. After installation, a threaded assembly is used to pass through the telescopic connector 112 and the main support tube 111 to relatively lock the telescopic connector 112 and the main support tube 111 to ensure the stability of the structure. At the same time, because the length of the adjustment slot 1121 is not less than the width of the cable hole, the threaded assembly of the column 12 on the original cable bracket and the threaded assembly of the column 12 on the new main support tube 111 can be connected to the telescopic connector 112 at the same time during expansion, ensuring the reliable installation of the new main support tube 111 and the original structure. Finally, the removed vertical frame strip 21 is installed on the end of the new main support tube 111. When reinstalling the vertical frame strip 21, if the original horizontal frame strip 22 is not long enough, the new horizontal frame strip 22 can be replaced or the original horizontal frame strip 22 can be lengthened.

[0052] Traditional cable supports often require complete replacement or large-scale structural adjustments when expanding, which is complex and costly. However, in the embodiment of the present invention, by setting the telescopic connector 112 and adjusting the long hole 1121, when expanding, it is only necessary to simply disassemble the vertical frame strips 21, insert the new main support tube 111, reinstall the vertical frame strips 21, and adjust the horizontal frame strips 22. This greatly simplifies the expansion and renovation process and reduces the construction difficulty and cost. This expansion method does not require large-scale damage to the main structure of the original cable support and can complete the renovation in a relatively short time, reducing the impact on the normal operation of the cable and improving the renovation efficiency.

[0053] For example Figure 7-8 As shown, the lifting outer frame 2 includes two horizontal frame bars 22 arranged parallel to each other in the upper and lower parts and two vertical frame bars 21 arranged parallel to each other in the left and right parts. The two ends of the horizontal frame bar 22 are respectively connected to the two vertical frame bars 21 to form a closed rectangular frame structure. The two ends of the crossbeam 11 are respectively connected to the vertical frame bars 21 on both sides to fix the lifting outer frame 2 and the bracket body 1 together, so that the entire cable bracket forms an integral structure.

[0054] When the cable trench is operating normally, the cables are laid and fixed through the cable holes on the bracket body 1 to ensure the normal operation of the cables. When the cable trench needs to be renovated and widened, construction workers do not need to remove the cables from the cable bracket one by one as in the traditional method. Instead, they use a lifting device to connect the lifting device's hook or other connecting components to the lifting frame 2. Since the lifting frame 2 is tightly connected to the bracket body 1, when the lifting device is started, the entire cable bracket and the cables laid on it can be simultaneously lifted out of the cable trench. In this way, during the cable trench renovation process, the cables always remain on the cable bracket and do not need to be removed, thus avoiding the tedious cable removal and reinstallation work.

[0055] It can be seen from the above that based on the cable holder provided in this embodiment, when the cable trench is renovated, the entire cable holder and the cable can be directly lifted out by lifting the outer frame 2, which greatly simplifies the construction process, reduces construction time, and significantly improves construction efficiency. Since there is no need to disassemble and reinstall the cables one by one, the manual operation links are reduced and the labor cost is reduced. The improvement in construction efficiency directly leads to the shortening of the construction period. The shortening of the construction period can restore the power supply or other related services more quickly, reduce the impact of the transformation on production and life, and improve the overall benefit of the project. In addition, in the traditional transformation process, frequent disassembly and installation of cables may cause mechanical damage to the cables, affecting the normal service life and performance of the cables. The cable holder of this embodiment avoids such operations, reduces the risk of cable damage, and better ensures the safety and stable operation of the cables.

[0056] In one embodiment, the horizontal border strips 22 and the vertical border strips 21 are both square tube structures.

[0057] In this embodiment, the horizontal and vertical frame bars 22 and 21 of the hoisting outer frame 2 are both constructed of square tubes. A square tube is a tubular steel material with four rectangular faces and a square or rectangular cross-section. This structure ensures that the horizontal and vertical frame bars 22 and 21 have relatively uniform mechanical properties in all directions.

[0058] The square tube structure has high bending, torsion and compression resistance. During the hoisting process, the cable bracket and the cables on it will generate greater weight and tension. The horizontal frame bars 22 and vertical frame bars 21 of the square tube structure can better withstand these forces and are not easily deformed or damaged, ensuring the structural integrity of the entire cable bracket during hoisting and subsequent use.

[0059] During the installation process, the connection method between the horizontal frame bars 22 and the vertical frame bars 21 of the square tube structure is relatively flexible, and various methods such as welding and bolt connection can be used. Construction workers can assemble the various components together quickly and accurately, thereby improving installation efficiency.

[0060] In one embodiment, the lifting outer frame 2 also includes an adapter 23, and the upper and lower ends of each vertical frame bar 21 are respectively welded and fixed with an adapter 23; the adapter 23 is provided with a connecting hole, and the two ends of the horizontal frame bar 22 are respectively provided with a laterally extending connecting long hole, and the threaded assembly passes through the connecting hole and the connecting long hole to connect and lock the adapter 23 with the horizontal frame bar 22.

[0061] The welded adapter 23 and the vertical frame bar 21 have a very high connection strength and can withstand large tension and pressure. At the same time, the threaded component passes through the connecting hole and the connecting long hole for connection and locking, further enhancing the connection reliability between the adapter 23 and the horizontal frame bar 22. This double connection method ensures that the hoisting outer frame 2 can maintain the stability and integrity of the structure when hoisting the cable bracket and the cables thereon, and will not loosen or fall off, thereby ensuring the safety of the construction process.

[0062] The use of a threaded assembly to connect the adapter 23 and the horizontal border strip 22 makes disassembly and assembly of the hoisting outer frame 2 relatively easy. When maintenance, component replacement, or other operations are required on the hoisting outer frame 2, the horizontal border strip 22 can be separated from the adapter 23 by simply loosening the threaded assembly, without the need for complex tools or operating procedures. The connecting elongated holes on the horizontal border strip 22 have a laterally extending characteristic, which allows the relative position between the horizontal border strip 22 and the adapter 23 to be adjusted within a certain range during installation. Construction personnel can flexibly adjust the installation position of the horizontal border strip 22 based on actual conditions, such as on-site space limitations and installation accuracy requirements, ensuring that the hoisting outer frame 2 can be accurately and stably installed, thereby improving the convenience and adaptability of installation.

[0063] In one embodiment, the adapter 23 includes a horizontal plate 231 and two vertical plates 232 vertically connected to the front and rear sides of the horizontal plate 231. The vertical frame bar 21 is provided with a slot, and the horizontal plate 231 is inserted into the slot. The two vertical plates 232 respectively abut the front and rear side walls of the vertical frame bar 21; the two vertical plates 232 are respectively provided with the connecting holes, and the horizontal frame bar 22 is inserted between the two vertical plates 232 so that the connecting long hole is aligned with the connecting holes on both sides.

[0064] The adapter 23 is composed of a horizontal plate 231 and two vertical plates 232 vertically connected to the front and rear sides of the horizontal plate 231. The overall structure is "U"-shaped. This structure ensures that the adapter 23 has clear force-bearing surfaces and connection points in the horizontal and vertical directions.

[0065] Specifically, the vertical frame bar 21 is provided with a slot, into which the horizontal plate 231 of the adapter 23 is inserted. Simultaneously, the two vertical plates 232 respectively abut the front and rear sidewalls of the vertical frame bar 21. This combination of insertion and abutment enables the adapter 23 to achieve preliminary positioning and connection with the vertical frame bar 21 in both the horizontal and vertical directions, limiting the adapter 23's degrees of freedom in multiple directions. During welding, the horizontal plate 231 and the vertical plate 232 can be welded and fixed to the vertical frame bar 21, achieving a reliable connection between the adapter 23 and the vertical frame bar 21. This connection structure achieves multi-directional positioning and preliminary fixation, increases the contact area between the adapter 23 and the vertical frame bar 21, effectively prevents relative movement of the adapter 23 in the horizontal and vertical directions, and improves the stability of the connection.

[0066] The horizontal frame strip 22 is inserted between the two vertical plates 232. At this time, the connecting long holes at both ends of the horizontal frame strip 22 are aligned with the connecting holes on the vertical plates 232 on both sides. This design creates conditions for the subsequent use of threaded components for connection and locking, ensuring the precise connection between the horizontal frame strip 22 and the adapter 23.

[0067] In one embodiment, the vertical frame bar 21 is provided with an insertion hole, and a support sleeve 25 is installed in the insertion hole; the end of the crossbeam 11 is inserted into the support sleeve 25 and locked with the vertical frame bar 21 and the support sleeve 25 through a threaded assembly.

[0068] The presence of the support sleeve 25 makes the connection between the crossbeam 11 and the vertical frame bar 21 more precise. The support sleeve 25 can be precisely designed and manufactured according to the dimensions of the crossbeam 11 and the insertion hole, effectively reducing the problem of loose connection or excessive gap caused by dimensional deviation. The end of the crossbeam 11 is accurately inserted into the support sleeve 25, ensuring the accurate installation position of the crossbeam 11 on the vertical frame bar 21 and improving the stability of the entire cable support structure. Importantly, since the vertical frame bar 21 is a square tube structure, when directly installed, it can only have two thin walls contacting the support sleeve 25 to support the crossbeam 11. Providing a support body can increase the support area for the crossbeam 11 and avoid the problem of the crossbeam 11 being deformed or even damaged by shear force.

[0069] The locking of the threaded assembly further enhances the firmness of the connection. The crossbeam 11, the support sleeve 25 and the vertical frame bar 21 are tightly connected together through the threaded assembly, which can withstand greater external forces and prevent the crossbeam 11 from shaking or falling off during cable laying and use, thereby ensuring the safe operation of the cable.

[0070] In one embodiment, the two vertical frame bars 21 are respectively fixed with a fixing seat 24 , and the fixing seat 24 is provided with a fixing hole, and the fixing hole is suitable for cooperating with the expansion bolt on the side wall of the cable trench.

[0071] During on-site installation, first install expansion bolts on both side walls of the cable trench, then install the cable bracket as a whole so that the fixing holes on the fixing seat 24 on the cable bracket pass through the corresponding expansion bolts, and then lock the nuts to fix it.

[0072] In this structure, the vertical frame bar 21 serves as the supporting base for the cable bracket to be installed in the cable trench, so there is no need to consider setting up a mounting structure on the bracket body 1. That is, the hoisting outer frame 2 not only provides a fixed base during hoisting, but also serves as a fixed base when the cable bracket is installed.

[0073] In addition, the vertical frame bars 21 on both sides of the lifting frame 2 are respectively installed on the two side walls of the cable trench, so that the entire cable bracket fully utilizes the width of the entire cable trench. This installation method can maximize the horizontal span of the cable bracket, provide more sufficient space for cable laying, meet the needs of laying more cables in a limited cable trench, improve the space utilization of the cable trench, adapt to the growing requirements for cable capacity in modern power infrastructure, help optimize cable layout, reduce the need for cable trench expansion, and reduce project costs.

[0074] On the other hand, a second embodiment of the present invention provides a cable trench reconstruction method based on the above-mentioned cable support, comprising the following steps:

[0075] S1. Open the cable trench cover. This is the initial step in the renovation process, providing access for the subsequent lifting of the cable supports and the cables mounted thereon. The cable trench cover typically protects the facilities and personnel within the trench, so it must be opened during renovation to allow construction personnel to perform subsequent operations.

[0076] S2. Connect the lifting equipment to the lifting outer frame 2 of the cable holder, and lift the cable holder and the cables thereon out of the cable trench at once; utilize the lifting outer frame 2 on the cable holder to establish a connection between the lifting equipment and the lifting outer frame 2. This design enables the lifting process to be carried out as a whole, and the cable holder and the cables carried thereon are lifted out of the cable trench at once, avoiding the tedious operation of removing each cable or part of the holder one by one, thereby improving work efficiency and reducing the risk of damage to the cables caused by operations in the cable trench; during the lifting process, multiple lifting equipment can be set up simultaneously to lift multiple cable holders simultaneously, and sufficient cable slack between the cable holders can be used to lift the cable holders and cables locally, avoiding the problem of cable pulling and breaking;

[0077] S3. Modify the cable trench: After the cable supports and cables are hoisted out, perform necessary modifications to the cable trench. These modifications may include clearing debris from the trench, repairing damaged trench walls or bottoms, and adjusting the trench size or layout.

[0078] S4. Expand the existing cable support. This expansion can increase the cable support's carrying capacity or adapt to new cable laying requirements, fully utilizing the existing cable support and minimizing renovation workload and costs.

[0079] S5. The expanded cable bracket and the cables on it are hoisted into the modified cable trench and fixed once; after the transformation is completed, the expanded cable bracket and the cables are hoisted into the modified cable trench as a whole. Due to the presence of the hoisting outer frame 2, the overall hoisting can still be achieved, reducing the workload of reinstalling and organizing the cables in the cable trench. After hoisting, the cable bracket is firmly fixed in the cable trench by the fixing seat 24 and the expansion bolts on the side wall of the cable trench, and the cable bracket is firmly fixed in the cable trench using nuts and other fixing methods to ensure its stability;

[0080] S6. Lay new cables. After the expanded cable racks are installed and fixed, proceed with laying new cables. Based on actual needs and design requirements, lay the new cables in an orderly manner on the cable racks to complete the cable trench renovation.

[0081] The modification method provided in this embodiment allows the cable support and its attached cables to be hoisted out and into the cable trench all at once, eliminating the complex removal and installation of individual cables or parts of the support within the trench. This reduces construction steps and labor, improving efficiency. Expansion of the existing cable support can be accomplished through simple adjustments using its retractable structure, eliminating the need to remanufacture or replace numerous components, further accelerating the renovation process.

[0082] On the other hand, refer to Figure 9 The step of expanding the capacity of the original cable support includes:

[0083] S41 will be connected to the telescopic connector 112 vertical frame strip 21 disassembled;

[0084] S42. Connect the new main support tube 111 to the original telescopic connector 112;

[0085] S43. Connect insulating rollers 113 in series to the new main support tube 111 and install new columns 12. Insulating rollers 113 play an important role in the cable support. They reduce friction between the cable and the main support tube 111, protecting the cable insulation from damage. They also help the cable slide smoothly on the main support tube 111, facilitating cable installation and maintenance.

[0086] S44. The end of the horizontal border strip 22 is plugged into the extended border strip and fixed;

[0087] S45. Install and connect the removed vertical frame strip 21 to the new main support tube 111 and the end of the extended frame strip.

[0088] Because the expansion process primarily utilizes the existing cable supports' retractable structure and simple plug-in and serial connection operations, there's no need to extensively replace existing components or remanufacture new cable supports, reducing material and processing costs. Furthermore, the improved construction efficiency reduces labor costs and construction time, ultimately lowering the overall cost of cable trench renovation.

[0089] For the working principle and process of this embodiment, please refer to the description of the aforementioned embodiment 1 of the present invention, which will not be repeated here.

[0090] Compared with the prior art, the beneficial effect brought about by the embodiment of the present invention is that, based on the cable holder provided by the present invention, when the cable trench is renovated, the entire cable holder and the cable can be directly hoisted out by hoisting the outer frame, which greatly simplifies the construction process, reduces construction time, and significantly improves construction efficiency. Since there is no need to disassemble and reinstall the cables one by one, the manual operation links are reduced and the labor cost is reduced. The improvement in construction efficiency directly leads to the shortening of the construction period. The shortening of the construction period can restore the power supply or other related services more quickly, reduce the impact of the transformation on production and life, and improve the overall benefits of the project. In addition, in the traditional transformation process, frequent disassembly and installation of cables may cause mechanical damage to the cables, affecting the normal service life and performance of the cables. The cable holder of this embodiment avoids such operations, reduces the risk of cable damage, and better ensures the safety and stable operation of the cables.

[0091] The above disclosure is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A cable support for a cable trench, characterized in that: include: The bracket body includes a plurality of crossbeams and columns connected in a crisscross pattern, wherein the crossbeams and the columns cooperate to separate a plurality of independent cable holes; The hoisting outer frame includes two horizontal frame bars arranged in parallel up and down and two vertical frame bars arranged in parallel left and right. The two ends of the horizontal frame bar are respectively connected to the two vertical frame bars, and the two ends of the crossbeam are respectively connected to the vertical frame bars on both sides.

2. The cable support according to claim 1, wherein: The crossbeam includes a main support tube and a telescopic connector, the telescopic connector is plugged into one end of the main support tube, the end of the main support tube away from the telescopic connector is connected to one of the vertical frame bars, and the telescopic connector is connected to the other vertical frame bar.

3. The cable support according to claim 2, characterized in that: The telescopic connector is provided with an adjustment long hole extending along its axial direction, and the length of the adjustment long hole is not less than the width of the cable threading hole.

4. The cable support according to claim 1, wherein: The lifting outer frame also includes an adapter, and each of the upper and lower ends of the vertical frame bar is welded and fixed with an adapter; the adapter is provided with a connecting hole, and the two ends of the horizontal frame bar are respectively provided with laterally extending connecting long holes, and the threaded assembly passes through the connecting hole and the connecting long hole to connect and lock the adapter with the horizontal frame bar.

5. The cable support according to claim 4, characterized in that: The adapter includes a horizontal plate and two vertical plates vertically connected to the front and rear sides of the horizontal plate. The vertical frame strip is provided with a slot. The horizontal plate is inserted into the slot. The two vertical plates respectively abut the front and rear side walls of the vertical frame strip. The two vertical plates are respectively provided with the connecting holes. The horizontal frame strip is inserted between the two vertical plates so that the connecting long hole is aligned with the connecting holes on both sides.

6. The cable support according to claim 4, characterized in that The vertical frame bar is provided with an insertion hole, and a support sleeve is installed in the insertion hole; the end of the crossbeam is inserted into the support sleeve and locked with the vertical frame bar and the support sleeve through a threaded assembly.

7. The cable support according to claim 1, wherein: The two vertical frame bars are respectively fixed with fixing seats, and the fixing seats are provided with fixing holes, and the fixing holes are adapted to the expansion bolts on the side walls of the cable trench.

8. The cable support according to any one of claims 1 to 7, characterized in that: The horizontal frame bars and the vertical frame bars are both square tube structures.

9. A cable trench reconstruction method based on the cable support according to any one of claims 1 to 8, characterized in that: The following steps are involved: When the cable trench cover is open, connect the lifting equipment to the lifting outer frame of the cable bracket and lift the cable bracket and the cables on it out of the cable trench at once; Renovation of cable trenches; Expand the capacity of the original cable bracket; Lift the expanded cable support and the cables on it into the modified cable trench at once and secure them; Lay new cables.

10. The cable trench reconstruction method according to claim 9, characterized in that: The step of expanding the capacity of the original cable support comprises: Disassemble the vertical frame strips connected to the telescopic connector; Connect the new main support tube to the original telescopic connector; Connect insulating rollers in series on the new main support pipe and install new columns; The ends of the horizontal frame strips are connected to the extended frame strips and fixed; Install and connect the removed vertical frame bars to the new main support tubes and the ends of the extended frame bars.

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