A municipal engineering tunnel cable support

Abstract

The application discloses a tunnel cable support for municipal engineering and relates to the field of tunnel cable supports, which comprises a stand column, a clamping structure for inserting an inclined support plate is arranged in the stand column at intervals along the height direction, one end of a supporting arm is connected with the stand column through a second bolt, and the other end is provided with a socket for matching the end of the inclined support plate, a clamp structure for fixing a cable is connected to the top end of a mounting table, the clamp structure on the mounting table is fixedly connected with the supporting arm through a first bolt, connecting strips are rotatably connected to both ends of a rotating roller, one end of the connecting strip away from the rotating roller can be connected to the mounting table, one end of the rotating roller is located at the clamp structure, and the top is higher than the bottom of the inner wall of the clamp structure. While the bolt is used for connecting the supporting arm and fixing the inclined support plate, the application realizes stable installation of the cable support, avoids increasing too much workload, and can well avoid damage to the cable sheath in the process of laying the cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel cable support, in particular to a tunnel cable support for municipal engineering. BACKGROUND

[0002] The tunnel cable support for municipal engineering is a support structure specially designed for tunnels, cable trenches and other underground passages, used for systematic laying and protection of power and communication cables. Its core functions are to fix cables, disperse gravity load, ensure heat dissipation spacing, and resist environmental risks such as moisture and vibration.

[0003] The common tunnel cable support for municipal engineering in the prior art usually includes a stand and a support arm. Some tunnel cable supports for municipal engineering are designed in a modular combination, using connecting pieces to combine and connect the stand and the support arm, which has the advantages of high flexibility, convenient and efficient installation, etc. In addition, some tunnel cable supports for municipal engineering combine the stand and the support arm by welding, which has the advantages of outstanding structural strength and stability.

[0004] A tunnel cable support for a tunnel cable trench is disclosed in Chinese Patent No. CN116979425B, which includes a stand vertically arranged and used for fixed connection with the side wall of the cable trench; a support arm horizontally arranged and fixedly connected with the stand at one end; a rotating piece rotatably arranged on the support arm about a vertical axis; and a support roller horizontally arranged above the support arm, the support roller being rotatably arranged on the rotating piece about the axis of the support roller, and the support roller and the support arm having a gap for placing cables therebetween; wherein the rotating piece has a working position, and when the rotating piece is rotated to the working position, the support roller is parallel to the support arm.

[0005] For the above-mentioned related technology, in order to solve the technical problem of easy wear of the cable sheath during cable laying, the scheme adopted in the prior art is relatively complex. When laying cables in the tunnel, according to the diameters of different cables, it is often necessary to install a cable support every 0.5-1 meter along the line. Although the cable support with complex structure can solve the problem of easy wear of the cable sheath, it can greatly increase the laying cost of the cable support.

[0006] When the length of the support arm is relatively long or the load is relatively large, the cable support in the prior art often needs to connect a diagonal bracing structure between the support arm and the stand. The cable support that combines the stand and the support arm with connecting pieces needs to increase the connecting components between the diagonal bracing structure and the stand, and between the diagonal bracing structure and the support arm, based on the original assembly workload. If there are multiple layers of support arms on each stand, the assembly workload will be multiplied, which seriously slows down the installation progress of the cable support.

[0007] The cable in the prior art is generally directly placed on the support arm, and the cable is easy to move on the support arm when subjected to external force, thereby making the distance between the cables difficult to fix, and the cables being too close to each other easily affecting the heat dissipation efficiency of the cables and being not conducive to subsequent maintenance.

[0008] In summary, the existing municipal engineering tunnel cable support is not easy to conveniently realize the support and fixation of the cable at a low cost. SUMMARY

[0009] Therefore, the present application aims to provide a municipal engineering tunnel cable support to solve the technical problem that the existing municipal engineering tunnel cable support is not easy to conveniently realize the support and fixation of the cable at a low cost.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solution: a municipal engineering tunnel cable support, comprising a stand column, a clamping structure for inserting a diagonal support plate is arranged in the stand column at intervals along the height direction, further comprising a support arm, one end of the support arm is connected with the stand column through a second bolt, and the other end is provided with a socket for matching the end of the diagonal support plate, further comprising a mounting table, the top end of the mounting table is connected with a clamping structure for fixing the cable, the clamping structure on the mounting table is fixedly connected with the support arm through a first bolt, further comprising a rotating roller, both ends of the rotating roller are rotatably connected with a connecting strip, one end of the connecting strip away from the rotating roller can be connected to the mounting table, one end of the rotating roller is located at the clamping structure, and the top is higher than the bottom of the inner wall of the clamping structure.

[0011] By using the above technical solution, the diagonal support plate is fixed while the support arm is connected by the bolt, the stable installation of the cable support is realized, the workload is not increased too much, and the rotating roller can also well avoid the damage of the cable sheath during the laying of the cable.

[0012] The present application is further provided that the stand column is a channel steel, and the inside is connected with a fixed plate at intervals along the height direction, the support arm is composed of two mutually parallel angle steels, and the top surface of the end portion is in contact with the bottom surface of the corresponding fixed plate, the end portion of the support arm is provided with a connecting box which simultaneously contacts the two angle steels, the stand column is fixedly connected with the stand column, the support arm and the connecting box below the fixed plate through two second bolts, the stand column is fixedly connected with a first clamping plate and a second clamping plate at the position below the support arm, and two diagonal support plates are arranged below each support arm, and the bottom end is inserted between the first clamping plate and the second clamping plate.

[0013] As a preferred, the end of the support arm away from the stand column is supported by the diagonal support plate, and the load capacity of the support arm is improved.

[0014] The column is provided with a connecting waist hole and a connecting round hole for connecting the second bolt at the same height below the fixing plate, the positioning plate is fixedly connected to the inside of the end of the support arm away from the column, and the two sides of the positioning plate are provided with sockets for the horizontal insertion of the top end of the inclined support plate.

[0015] As preferred, the support arm and the inclined support plate are quickly installed.

[0016] The support arm is provided with a sliding groove between the two angle steels, the bottom surface of the mounting table is fixedly connected with a guide block for sliding in the sliding groove, and the width of the sliding groove is greater than the diameter of the first bolt.

[0017] As preferred, the mounting position of the mounting table can be conveniently adjusted in the sliding groove direction.

[0018] The two sides of the mounting table are provided with first notches, and the first bolt can pass through the first notches.

[0019] As preferred, the first notches are for the first bolt to pass through, and also facilitate the installation of the connecting strip.

[0020] The first fixed clamps are fixedly connected to the mounting table, the top end of the first fixed clamps is symmetrically provided with second fixed clamps, the first bolt passes through the perforations on the second fixed clamps, the perforations on the first fixed clamps, the first notches and the support arm in sequence.

[0021] As preferred, the first fixed clamps and the second fixed clamps are used to fix the cable.

[0022] The first rotating clamps are rotatably connected to the mounting table, the top end of the first rotating clamps is symmetrically provided with second rotating clamps, the two sides of the first rotating clamps and the second rotating clamps are provided with arc-shaped grooves, the arc-shaped grooves are circular arcs, the center of the circular arc coincides with the axis of the first rotating clamps, and the first bolt passes through the arc-shaped grooves on the second rotating clamps, the arc-shaped grooves on the first rotating clamps, the first notches and the support arm in sequence.

[0023] As preferred, the first rotating clamps and the second rotating clamps can be rotated at the turning of the tunnel, and the clamping structure of the fixed cable is adjusted in the direction according to the arc adaptability of the cable.

[0024] The end of the connecting strip is provided with a second notch corresponding to the first notch, the first notch and the second notch are both open to the two sides of the mounting table, a clamping column is clamped in the first notch and the second notch, the two ends of the clamping column are fixedly connected with end heads with diameters greater than the first notch and the second notch, and the end heads of the two ends are respectively in contact with the first notch and the second notch.

[0025] As preferred, the connecting strip is quickly installed on the mounting table by the clamping column.

[0026] The first clamping plate is a steel plate welded in the column, and a first clamping hole is arranged at the lower end; the second clamping plate is an angle steel, and a second clamping hole is arranged at both sides; and the two sides of the end of the diagonal bracing plate are in contact with the side walls of the first clamping hole and the second clamping hole respectively.

[0027] As preferred, the first clamping plate and the second clamping plate are simple and reliable in structure, can reduce the manufacturing difficulty of the column, and can guarantee the stability of the diagonal bracing plate during connection.

[0028] The column is provided with a plurality of mounting waist holes in the height direction, and the mounting waist holes do not interfere with the fixing plate and the first clamping plate.

[0029] As preferred, the column 1 is fixed to the wall surface of the tunnel by using the expansion bolts.

[0030] In summary, the present application mainly has the following beneficial effects:

[0031] The present application sets the clamping structure for clamping the diagonal bracing plate in the column, sets the socket at the end of the supporting arm for cooperating with the top end of the diagonal bracing plate, fixes the diagonal bracing plate while connecting the supporting arm by using the bolt, realizes the stable installation of the cable support, and avoids increasing the workload.

[0032] The present application connects the mounting table on the supporting arm in the length direction, fixes the cable by using the clamp structure on the mounting table, positions the mounting table while fixing and connecting the clamp structure by using the bolt, and then conveniently fixes the cable at the appropriate position of the supporting arm to prevent the cable from moving due to external force.

[0033] The present application rotates the clamp structure on the mounting table, sets the arc-shaped slot on both sides of the clamp structure for the bolt to pass through, and adaptively adjusts the orientation of the clamp structure at the turning place of the tunnel, so that the cable is more stably supported and fixed.

[0034] The present application effectively saves the amount of steel under the premise of guaranteeing sufficient strength by using the simple assembly structure, connects the rotating roller structure at the front end of the mounting table, guarantees that the cable sheath is not abraded during cable laying, and can be removed and installed in the subsequent cable support after the rotating roller is used. Under the premise of guaranteeing that the cable sheath is not abraded during cable laying, the manufacturing cost of the cable support is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a perspective view of the present application;

[0036] Figure 2 Another perspective view of the present invention;

[0037] Figure 3 An exploded view of the present invention with the column and a set of arms combined;

[0038] Figure 4 Another perspective view of the present invention; Figure 3 An enlarged view of A in the present invention;

[0039] Figure 5 Another perspective view of the present invention with the column and a set of arms combined;

[0040] Figure 6 A perspective view of the present invention with the diagonal plate inserted into the column and the arms about to be clamped to the top end of the diagonal plate;

[0041] Figure 7 Another perspective view of the present invention; Figure 6 A perspective view of B in the present invention;

[0042] Figure 8 A perspective view of the present invention with an angle-adjustable rotating clamp on the arms at a tunnel corner;

[0043] Figure 9 Another perspective view of the present invention; Figure 8 An enlarged view of C in the present invention;

[0044] Figure 10 An exploded view of the present invention with an angle-adjustable rotating clamp on the arms at a tunnel corner;

[0045] Figure 11 Another perspective view of the present invention; Figure 10 An enlarged view of D in the present invention;

[0046] Figure 12 A perspective view of the present invention with a roller connected to the installation platform to prevent damage to the cable sheath during laying;

[0047] Figure 13 Another perspective view of the present invention; Figure 12 An enlarged view of E in the present invention;

[0048] Figure 14 An exploded view of the present invention with a roller and an installation platform.

[0049] BRIEF DESCRIPTION OF THE DRAWINGS

[0050] 1, post; 101, mounting waist hole; 102, connecting waist hole; 103, connecting round hole; 104, fixed plate; 105, first clamping plate; 106, second clamping plate; 107, first clamping hole; 108, second clamping hole; 2, support arm; 201, sliding groove; 202, positioning plate; 203, socket; 3, inclined support plate; 4, mounting table; 401, first notch; 402, guide block; 5, first fixed clamp; 6, second fixed clamp; 7, first rotating clamp; 8, second rotating clamp; 801, arc slot; 9, connecting strip; 901, second notch; 10, rotating roller; 11, clamping column; 12, first bolt; 13, second bolt; 14, connecting box; 15, rotating shaft. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0052] The embodiments of the present application will be described below according to the overall structure of the present application.

[0053] First embodiment:

[0054] A municipal engineering tunnel cable support, please refer to Figures 1-14 , including a post 1, the post 1 is provided with a clamping structure for the insertion of the inclined support plate 3 at intervals along the height direction, specifically, the clamping structure can be a steel plate welded in the post, a plug-in box or other structure, in this embodiment, a plurality of steel plates can be welded to form a groove for the insertion of the inclined support plate 3, which is used to position the bottom end of the inclined support plate 3.

[0055] It also includes a support arm 2, one end of the support arm 2 is connected with the post 1 through the second bolt 13, and the other end is provided with a socket 203 for cooperating with the end of the inclined support plate 3, after the bottom end of the inclined support plate 3 is positioned in the post 1, the top end of the inclined support plate 3 is inserted into the socket 203 to complete the positioning of the inclined support plate 3, avoiding the shaking of the inclined support plate 3, so that the inclined support plate 3 can stably support the end of the support arm 2 away from the post 1.

[0056] It also includes a mounting table 4, the top end of the mounting table 4 is connected with a clamp structure for fixing the cable, the clamp structure on the mounting table 4 is fixedly connected with the support arm 2 through the first bolt 12, the cable is fixed by the clamp structure, and the mounting table 4 is fixed by the first bolt 12, which can avoid the movement of the cable during use.

[0057] The roller 10 is rotatably connected with the connecting strip 9 at both ends, and the end of the connecting strip 9 away from the roller 10 can be connected to the mounting table 4. When the connecting strip 9 is fixedly installed, the roller 10 can support the bottom end of the cable in the laying state. Through the rolling friction between the roller 10 and the outer skin of the cable, the outer skin of the cable is prevented from being scratched by the clamp structure.

[0058] Specifically, the roller 10 is located at the end of the clamp structure facing the cable, and the top is higher than the bottom of the inner wall of the clamp structure, which can support the cable and prevent the cable from being damaged. In other embodiments not disclosed, when the weight of the cable is heavy, the roller 10 is also provided at both ends of the clamp structure to better support the cable.

[0059] In the above embodiment, please refer to Figures 1-4 , the column 1 is a channel steel, and the inside is connected with a fixed plate 104 at intervals along the height direction. The supporting arm 2 is composed of two mutually parallel angle steels, and the top surface of the end is in contact with the bottom surface of the corresponding fixed plate 104. Specifically, one side of the two angle steels that make up the supporting arm 2 is in the same plane, and the other vertical plane is vertically downward. The supporting arm 2 can resist a larger downward pressure without obvious deformation.

[0060] Further, the end of the supporting arm 2 is provided with a connecting box 14 that simultaneously contacts the two angle steels. The connecting box 14 is used to make the ends of the two angle steels that make up the supporting arm 2 close to the inner wall of the column 1. Specifically, the column 1 is fixedly connected with the column 1, the supporting arm 2 and the connecting box 14 through the two second bolts 13 below the fixed plate 104.

[0061] In the above embodiment, please refer to Figures 3-7 , in order to enable the inclined support plate 3 to be stably inserted into the column 1, in this embodiment, the column 1 is fixedly connected with a first clamping plate 105 and a second clamping plate 106 at a position below the supporting arm 2. The inclined support plate 3 is provided with two below each supporting arm 2, and the bottom end is inserted between the first clamping plate 105 and the second clamping plate 106. The end of the supporting arm 2 away from the column 1 is supported by the inclined support plate 3, which improves the load capacity of the supporting arm 2.

[0062] Specifically, the first clamping plate 105 is a steel plate welded in the stand 1, and a first clamping hole 107 is arranged at the lower end. Specifically, the first clamping hole 107 is obtained by cutting the first clamping plate 105. The second clamping plate 106 is an angle steel, and a second clamping hole 108 is arranged at both sides. Specifically, the second clamping hole 108 is also obtained by cutting the second clamping plate 106. The two sides of the end of the diagonal bracing plate 3 are in contact with the side walls of the first clamping hole 107 and the second clamping hole 108, and are limited by the first clamping hole 107 and the second clamping hole 108. The diagonal bracing plate 3 can only be pulled out obliquely. The first clamping plate 105 and the second clamping plate 106 are simple and reliable in structure, can reduce the manufacturing difficulty of the stand 1, and can ensure the stability of the diagonal bracing plate 3 during connection.

[0063] Further, the stand 1 is provided with a plurality of mounting waist holes 101 along the height direction. The mounting waist holes 101 do not interfere with the fixing plate 104 and the first clamping plate 105, so that the stand 1 can be fixed to the wall surface of the tunnel by using expansion bolts.

[0064] In the above embodiment, specifically, please refer to Figures 8-11 The bracket 2 is provided with a sliding groove 201 between the two angle steels, and the bottom surface of the mounting table 4 is fixedly connected with a guide block 402 for sliding in the sliding groove 201. The width of the sliding groove 201 is greater than the diameter of the first bolt 12, so that the mounting position of the mounting table 4 and the position of the cable on the bracket 2 can be conveniently adjusted along the direction of the sliding groove 201.

[0065] In the above embodiment, specifically, please refer to Figures 4-10 The stand 1 is provided with a connecting waist hole 102 and a connecting circular hole 103 at the same height below the fixing plate 104 for connecting the second bolt 13. The bracket 2 is fixedly connected with a positioning plate 202 inside the end away from the stand 1. The two sides of the positioning plate 202 are provided with a socket 203 for inserting the top end of the diagonal bracing plate 3 in the horizontal direction. The top end of the diagonal bracing plate 3 is inserted into the socket 203 horizontally, and the bracket 2 is fixed to the stand 1 by the second bolt 13. After that, the diagonal bracing plate 3 and the bracket 2 do not move relative to each other.

[0066] Specifically, when the bracket 2 is installed, the second bolt 13 at the connecting waist hole 102 is passed through the stand 1, the connecting box 14 and the bracket 2, but is not tightened. At this time, the bracket 2 can rotate around the second bolt 13 as the shaft. Since the diagonal bracing plate 3 below has been inserted into the stand 1, the bracket 2 can be placed in a horizontal state to contact the top end of the diagonal bracing plate 3. Then the bracket 2 is pushed towards the stand 1, so that the top end of the diagonal bracing plate 3 is inserted into the socket 203. Another second bolt 13 is connected, and the two second bolts 13 are tightened, so that the bracket 2 and the diagonal bracing plate 3 can be quickly installed.

[0067] Second embodiment:

[0068] A municipal engineering tunnel cable support, please refer to Figures 1-14 On the basis of the first embodiment, different from the first embodiment is that the two sides of the mounting table 4 are provided with first notches 401, and the first bolts 12 can pass through the first notches 401, and the first notches 401 are used for the first bolts 12 to pass through, and also facilitate the installation of the connecting strips 9.

[0069] Further, the first fixed clamps 5 are fixedly connected to the mounting table 4, the top ends of the first fixed clamps 5 are symmetrically provided with the second fixed clamps 6, the diameters of the first fixed clamps 5 and the second fixed clamps 6 are adaptively selected according to different cables, and the first bolts 12 pass through the perforations in the second fixed clamps 6, the perforations in the first fixed clamps 5, the first notches 401 and the supporting arms 2 in sequence, and the first fixed clamps 5 and the second fixed clamps 6 are used to fix the cables.

[0070] The third embodiment:

[0071] A municipal engineering tunnel cable support, please refer to Figures 1-14 On the basis of the second embodiment, different from the second embodiment is that the first rotating clamps 7 are rotatably connected to the mounting table 4, specifically, the first rotating clamps 7 are rotatably connected to the mounting table 4 through the rotating shafts 15, the top ends of the first rotating clamps 7 are symmetrically provided with the second rotating clamps 8, the two sides of the first rotating clamps 7 and the second rotating clamps 8 are provided with arc-shaped grooves 801, the arc-shaped grooves 801 are circular arcs, the centers of which coincide with the axes of the first rotating clamps 7, and the first bolts 12 can still pass through the arc-shaped grooves 801 and the first notches 401 after the first rotating clamps 7 and the second rotating clamps 8 are rotated and adjusted.

[0072] Specifically, the first bolts 12 pass through the arc-shaped grooves 801 in the second rotating clamps 8, the arc-shaped grooves 801 in the first rotating clamps 7, the first notches 401 and the supporting arms 2 in sequence, the first rotating clamps 7 and the second rotating clamps 8 can be rotated at the turning places of the tunnels, and the clamp structures for fixing the cables are adaptively adjusted in the direction so as to better fix the cables on the support.

[0073] The fourth embodiment:

[0074] A municipal engineering tunnel cable support, please refer to Figures 1-14On the basis of the third embodiment, different from the third embodiment is that the end of the connecting strip 9 is provided with a second notch 901 corresponding to the first notch 401, both the first notch 401 and the second notch 901 are open to the two sides of the mounting table 4, and the first notch 401 and the second notch 901 are clamped with the clamping column 11, specifically, when the clamping column 11 is clamped in the first notch 401 and the second notch 901, the connecting strip 9 is at least restricted by one clamping column 11 in the horizontal direction, which guarantees the stable installation of the connecting strip 9.

[0075] Further, both ends of the clamping column 11 are fixedly connected with end heads with diameters greater than the first notch 401 and the second notch 901, and the end heads at both ends are in contact with the first notch 401 and the second notch 901, respectively, for avoiding relative movement of the connecting strip 9 along the vertical direction with the mounting table 4, quickly installing the connecting strip 9 on the mounting table 4 by using the clamping column 11, and then quickly disassembling the rotating roller 10 and installing it on the next cable support after the cable is pulled, so that only a small number of rotating roller 10 assemblies are needed in the cable laying project, which greatly reduces the laying cost of the cable support.

[0076] When the cable laying work is specifically performed, the present application has the following advantages:

[0077] The stand column 1 is fixed in the tunnel through the mounting waist hole 101 at the measured installation position in advance, the inclined support plate 3 is inserted in the stand column 1, and the connecting box 14 is clamped at the end of the support arm 2 away from the positioning plate 202, one second bolt 13 is used to pass through the connecting waist hole 102 on one side of the stand column 1, one of the angle steels of the support arm 2, the connecting box 14, the other angle steel of the support arm 2, the connecting waist hole 102 on the other side of the stand column, and then the nut is screwed but not tightened, the support arm 2 is placed on the inclined support plate 3, the support arm 2 is pushed towards the stand column 1 in the horizontal direction, the top end of the inclined support plate 3 is inserted into the socket 203, and then another second bolt 13 is used to pass through the connecting circular hole 103 along the same path, and the two second bolts 13 are tightened to conveniently complete the installation of the support arm 2;

[0078] The mounting table 4 is placed on the support arm 2, the guide block 402 of the mounting table 4 is clamped into the sliding groove 201 of the support arm 2, the position of the mounting table 4 on the support arm 2 is adjusted by sliding along the sliding groove 201, then the two connecting strips 9 of the rotating roller 10 are placed on the mounting table 4, the first notch 401 corresponds to the second notch 901, and the two clamping columns 11 are inserted into the two connecting strips 9 in the horizontal direction, respectively, to realize the positioning of the connecting strips 9, and then the cable laying can be started;

[0079] After the cable is laid, the two clamping columns 11 are pulled out and the rotating roller 10 is removed, the cable falls into the first fixed clamp 5 or the first rotating clamp 7, the corresponding second fixed clamp 6 or the second rotating clamp 8 is covered, the first bolt 12 is used to pass through the clamp structure to complete the fixing and installation of the cable, when the cable support is located at the turning place of the tunnel, a plurality of cable supports need to be installed along the length direction of the cable, after the bending radius of the cable is determined, the first rotating clamp 7 is pressed down by using the first bolt 12 passing through the arc-shaped groove 801, the fixing and installation of the cable are completed, the removed rotating roller 10 can be repeatedly used for other cable supports, while laying the cable, the manufacturing cost of the cable support is effectively reduced.

[0080] Although the embodiments of the present application have been shown and described, the specific embodiments are merely illustrative of the present application, and are not intended to limit the present application, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A tunnel cable support for municipal engineering, characterized in that, include: The column (1) has a snap-fit ​​structure for inserting diagonal bracing plates (3) at intervals along the height direction inside the column (1); Support arm (2), one end of which is connected to the column (1) by a second bolt (13), and the other end is provided with a socket (203) for cooperating with the end of the diagonal brace (3). Mounting platform (4), the top of which is connected to a clamp structure for fixing cables. The clamp structure on the mounting platform (4) is fixedly connected to the support arm (2) by a first bolt (12). Both sides of the mounting platform (4) are provided with a first notch (401). The first bolt (12) can pass through the first notch (401). The support arm (2) is provided with a sliding groove (201) between two angle steels. The bottom surface of the mounting platform (4) is fixedly connected with a guide block (402) for sliding in the sliding groove (201). The width of the sliding groove (201) is greater than the diameter of the first bolt (12). A rotating roller (10) is rotatably connected to two ends of a connecting strip (9). The end of the connecting strip (9) away from the rotating roller (10) can be connected to a mounting platform (4). The rotating roller (10) is located at one end of a clamp structure, and its top is higher than the bottom of the inner wall of the clamp structure. A first rotating clamp (7) is rotatably connected to the mounting platform (4). A second rotating clamp (8) is symmetrically arranged at the top of the first rotating clamp (7). Both sides of the first rotating clamp (7) and the second rotating clamp (8) are provided with arc grooves (801). The arc grooves (801) are circular arcs, and their centers coincide with the axis of the first rotating clamp (7). The first bolt (12) passes through the second rotating clamp in sequence. The arc groove (801) on the clamp (8), the arc groove (801) on the first rotating clamp (7), the first notch (401), the support arm (2), and the end of the connecting strip (9) is provided with a second notch (901) corresponding to the first notch (401). The first notch (401) and the second notch (901) are both open towards the two sides of the mounting platform (4). The first notch (401) and the second notch (901) are fitted with a snap-fit ​​post (11). Both ends of the snap-fit ​​post (11) are fixedly connected with ends with a diameter greater than that of the first notch (401) and the second notch (901), and the ends of both ends are in contact with the first notch (401) and the second notch (901) respectively.

2. The tunnel cable support for municipal engineering according to claim 1, characterized in that: The column (1) is a channel steel and has fixed plates (104) connected at intervals along the height direction inside. The support arm (2) is composed of two parallel angle steels and the top surface of the end contacts the bottom surface of the corresponding fixed plate (104). The end of the support arm (2) is provided with a connecting box (14) that contacts the two angle steels at the same time. The column (1) is fixedly connected to the column (1), the support arm (2) and the connecting box (14) below the fixed plate (104) by two second bolts (13). The column (1) is fixedly connected with a first snap-fit ​​plate (105) and a second snap-fit ​​plate (106) at the position below the support arm (2). There are two diagonal bracing plates (3) below each support arm (2) and the bottom end is inserted between the first snap-fit ​​plate (105) and the second snap-fit ​​plate (106).

3. The tunnel cable support for municipal engineering according to claim 2, characterized in that: The column (1) is provided with a connecting waist hole (102) and a connecting round hole (103) for connecting the second bolt (13) at the same height below the fixing plate (104). The bracket (2) is fixedly connected with a positioning plate (202) at the end away from the column (1). Both sides of the positioning plate (202) are provided with a socket (203) for the top of the diagonal brace (3) to be inserted in the horizontal direction.

4. The tunnel cable support for municipal engineering according to claim 2, characterized in that: The first snap-fit ​​plate (105) is a steel plate welded into the column (1) and has a first snap-fit ​​(107) at the lower end. The second snap-fit ​​plate (106) is an angle steel and has a second snap-fit ​​(108) on both sides. The two sides of the end of the diagonal brace (3) are in contact with the side walls of the first snap-fit ​​(107) and the second snap-fit ​​(108) respectively.

5. The tunnel cable support for municipal engineering according to claim 4, characterized in that: The column (1) is provided with a plurality of mounting holes (101) at intervals along the height direction. The mounting holes (101) will not interfere with the fixing plate (104) and the first snap-fit ​​plate (105).

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