Cable bracket for cable trench

Abstract

The present invention is applicable to the field of cable installation technology, and provides a cable bracket for a cable trench, comprising a support frame, and also comprising: a cable fixing mechanism provided on the support frame, wherein at least one cable fixing mechanism is provided, and the cable fixing mechanism comprises a shell provided on the support frame, and a wire hole provided through the center of the shell, a mounting ring is fixed in the shell, and a plurality of guide grooves are evenly provided on the mounting ring, wherein the plurality of guide grooves are radial, and T-shaped slide bars are slidably connected in the plurality of guide grooves along the length direction, and tension springs are fixed at one end of the plurality of T-shaped slide bars away from each other. The fixing rope is spirally wound around the cable, and the spiral fixing rope clamps the cable. The spiral fixing rope fully contacts the cable side, thereby avoiding the problem of local stress and damage to the cable when the cable is clamped by point contact, and by providing a plurality of T-shaped slide bars, the friction between the fixing rope and the cable is increased, thereby improving the effect of the fixing rope on clamping the cable.

Description

Technical Field

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

[0002] Cable supports for cable trenches are structural components used to fix, support and protect cables. They are usually installed in cable trenches to ensure that the cables remain stable during laying and operation.

[0003] To prevent the cable from moving on the cable bracket, a fixing mechanism is generally installed on the cable bracket to fix the cable on the cable bracket. For example, a cable bracket for a cable trench disclosed in publication number CN221633321U clamps the cable with a cable clamp, and the size of the cable clamp matches the cable diameter.

[0004] Although the above method can fix the cable on the cable bracket, the size of the cable clamp is fixed and cannot fix cables of different diameters. In addition, the cable clamp contacts and clamps the cable locally, which causes uneven force on the circumference of the cable, easily deforming and damaging the cable. Summary of the Invention

[0005] The purpose of the embodiment of the present invention is to provide a cable bracket for a cable trench, aiming to solve the problems of uneven force on the cable sides when fixing the cables in the existing cable bracket, which easily damages the cables and cannot fix cables of different sizes.

[0006] The present invention is implemented as follows: a cable bracket for a cable trench, comprising a support frame, and also comprising: a cable fixing mechanism arranged on the support frame, the cable fixing mechanism being provided with at least one, the cable fixing mechanism comprising a shell arranged on the support frame, and a wire hole arranged through the center of the shell, a mounting ring being fixed in the shell, a plurality of guide grooves being evenly arranged on the mounting ring, the plurality of guide grooves being radially arranged, a plurality of T-shaped slide bars being slidably connected in the length direction in the guide grooves, a plurality of T-shaped slide bars being fixed with a tension spring at one end away from each other, an end of the tension spring being fixed in the guide groove, a plurality of T-shaped slide bars being provided with a storage hole, a plurality of the storage holes being provided with a fixing rope, the fixing rope spirally passing through the plurality of storage holes, and two tightening structures being provided on the shell, the tightening structure being used to drag the end of the fixing rope.

[0007] A further technical solution is that the support frame includes a fixed plate and at least one horizontal bracket, a guide groove is provided on the fixed plate along the length direction, the horizontal bracket is slidably connected in the guide groove, a plurality of threaded holes are evenly provided in the guide groove along the length direction, the horizontal bracket is connected to one of the threaded holes through a fixing bolt, and the cable fixing mechanism is provided on the horizontal bracket.

[0008] A further technical solution is that a horizontal mounting groove is provided at the upper end of the horizontal bracket along the length direction, a sliding part is provided at the bottom of the shell, the sliding part is slidably connected in the horizontal mounting groove, a plurality of threaded holes 2 are evenly provided on the horizontal bracket along the length direction, the threaded holes 2 are internally threadedly connected with fixing bolts 2, and a recessed groove cooperating with fixing bolts 2 is provided on the side wall of the sliding part.

[0009] A further technical solution is that the tightening structure includes a shell including an annular groove provided on the inner wall, and an inner rotating ring rotatably connected in the annular groove, one end of the fixing rope is fixed on the inner wall of the inner rotating ring, an outer rotating ring is rotatably connected on the side wall of the shell, the outer rotating ring and the inner rotating ring are connected to each other through a transmission assembly, and a limiting assembly is provided on the shell, and the limiting assembly is used to limit the reversal of the outer rotating ring.

[0010] According to a further technical solution, the transmission assembly includes a mounting groove provided through the side wall of the shell, a gear is rotatably connected in the mounting groove, an outer gear ring is fixed on the inner rotating ring, an inner gear ring is embedded and fixed on the inner side of the outer rotating ring, and the gear is engaged with both the outer gear ring and the inner gear ring at the same time.

[0011] A further technical solution is that the limiting assembly includes a second guide slide groove horizontally arranged on the shell, a guide block is slidably connected in the second guide slide groove, an engaging block is fixed to one end of the guide block, a compression spring and a pull rod are fixed to the other end of the guide block, and the end of the compression spring is fixed in the second guide slide groove, and a plurality of limiting grooves are evenly arranged on the side wall of the outer rotating ring, and the plurality of limiting grooves are radially arranged, and one side of the limiting groove is set as a slope.

[0012] A further technical solution is that a second annular groove is provided on the inner wall of the shell, a synchronous ring is rotatably connected in the second annular groove, a plurality of arc holes are evenly provided on the synchronous ring, and the plurality of arc holes are radially arranged, and a plurality of mating shafts are fixed on the side walls of the T-shaped slide rods, and the plurality of mating shafts are respectively slidably connected in the plurality of arc holes, and a plurality of avoidance grooves for the movement of the mating shafts are provided on the side wall of the mounting ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In addition to being used to expand the spiral fixing rope, the multiple T-shaped sliding rods can also clamp the cable. The fixing rope is spirally wound around the cable, clamping the cable. The spiral fixing rope fully contacts the cable circumference, thereby avoiding the problem of local stress and damage to the cable when clamping the cable in a point-contact manner. By providing multiple T-shaped sliding rods, the friction between the fixing rope and the cable can be increased, thereby improving the clamping effect of the fixing rope on the cable.

[0015] 2. The height of the horizontal bracket and the spacing between two adjacent horizontal brackets can be adjusted by the cooperation of the guide groove 1, the fixing bolt 1 and the threaded hole 1. The position between two adjacent cable fixing mechanisms can be adjusted by the cooperation of the horizontal mounting groove and the sliding part, and the cooperation of the fixing bolt 2 and the sink groove.

[0016] 3. The inner rotating ring drives one end of the fixing rope to revolve around the axis of the cable hole, and then continues to wrap the one end of the fixing rope around the cable, increasing the number of turns of the fixing rope around the cable, thereby increasing the contact area between the fixing rope and the cable side, thereby improving the fixing rope's clamping effect on the cable. As the number of turns of the fixing rope increases, the spiral shape of the fixing rope gradually becomes smaller;

[0017] 4. The synchronization ring can make multiple T-shaped slide bars move synchronously toward or in opposite directions through the cooperation of multiple sets of arc holes and matching shafts. Then, when the T-shaped slide bar and the fixing rope fix the cable, the cable is placed in the center of the wire hole, suspended in the air, and does not contact the housing, so as to avoid the housing rubbing against the cable when the cable shakes. The suspended cable is convenient for heat dissipation and inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a cable support for a cable trench provided by the present invention;

[0019] Figure 2 The present invention provides Figure 1 Schematic diagram of the structure of the cable fixing mechanism;

[0020] Figure 3 The present invention provides Figure 2 Schematic diagram of the internal structure of the middle shell;

[0021] Figure 4 The present invention provides Figure 3 Schematic diagram of the structure of the middle shell;

[0022] Figure 5 The present invention provides Figure 4 Schematic diagram of the enlarged structure of A in the middle;

[0023] Figure 6 The present invention provides Figure 3 Schematic diagram of the structure after removing the shell;

[0024] Figure 7 The present invention provides Figure 6 Schematic diagram of the structure after removing the outer rotating ring;

[0025] Figure 8 The present invention provides Figure 7 Schematic diagram of the structure after removing the inner rotating ring and gear;

[0026] Figure 9 The present invention provides Figure 3 Schematic diagram of the structure of the middle and outer rotating rings;

[0027] Figure 10 The present invention provides Figure 3 Schematic diagram of the enlarged structure of B.

[0028] In the accompanying drawings: 1, support frame; 101, fixing plate; 102, guide slide groove 1; 103, horizontal bracket; 104, threaded hole 1; 105, fixing bolt 1; 106, horizontal mounting groove; 107, sliding portion; 108, threaded hole 2; 109, fixing bolt 2;

[0029] 2. Cable fixing mechanism; 201. Housing; 202. Mounting ring; 203. Guide groove; 204. T-shaped slide bar; 205. Storage hole; 206. Tension spring; 207. Fixing rope; 208. Wire hole;

[0030] 3. Tightening structure; 301. Annular groove 1; 302. Inner rotating ring; 303. Outer rotating ring;

[0031] 4. Transmission assembly; 401. Mounting slot; 402. Gear; 403. Outer gear ring; 404. Inner gear ring; 5. Limit assembly;

[0032] 501. Guide groove 2; 502. Guide block; 503. Compression spring; 504. Engaging block; 505. Pull rod; 506. Limiting groove; 507. Inclined surface; 601. Annular groove 2; 602. Synchronizing ring; 603. Arc hole; 604. Matching shaft; 605. Avoidance groove. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0035] like Figures 1-8As shown, a cable bracket for a cable trench provided by an embodiment of the present invention includes a support frame 1, and also includes: a cable fixing mechanism 2 provided on the support frame 1, the cable fixing mechanism 2 is provided with at least one, the cable fixing mechanism 2 includes a shell 201 provided on the support frame 1, and a wire hole 208 provided through the center of the shell 201, a mounting ring 202 is fixed in the shell 201, and a plurality of guide grooves 203 are evenly provided on the mounting ring 202, and the plurality of guide grooves 203 are radially arranged. T-shaped slide bars 204 are slidably connected in the groove 203 along the length direction, and a tension spring 206 is fixed at one end of the multiple T-shaped slide bars 204 away from each other. The end of the tension spring 206 is fixed in the guide groove 203, and the multiple T-shaped slide bars 204 are provided with storage holes 205. The multiple storage holes 205 are provided with fixing ropes 207. The fixing ropes 207 spirally pass through the multiple storage holes 205. Two tightening structures 3 are provided on the shell 201, and the tightening structure 3 is used to drag the end of the fixing rope 207.

[0036] In the embodiment of the present invention, in the initial state, the tension spring 206 is in a contracted state. The tension spring 206 pulls the T-shaped slide bar 204 to retract into the guide groove 203. The multiple T-shaped slide bars 204 expand the spiral fixing rope 207 so that the wire hole 208 is located inside the spiral fixing rope 207. That is, the diameter of the spiral fixing rope 207 is larger than the diameter of the wire hole 208. This prevents the fixing rope 207 from obstructing the cable from passing through the wire hole 208 during threading.

[0037] When in use, the cable is passed through the wire hole 208 so that the cable is located in the spiral fixing rope 207. The two tightening structures 3 drag the two ends of the fixing rope 207, thereby tightening the spiral fixing rope 207. The spiral fixing rope 207 drives multiple T-shaped slide bars 204 to approach and contact the cable. In addition to being used to stretch the spiral fixing rope 207, multiple T-shaped slide bars 204 can also clamp the cable, and the fixing rope 207 is spirally wound around the cable. The spiral fixing rope 207 clamps the cable, and the spiral fixing rope 207 fully contacts the cable side, thereby avoiding the problem of local stress and damage to the cable when point contact is used to clamp the cable. In addition, by providing multiple T-shaped slide bars 204, the friction between the fixing rope 207 and the cable can be increased, thereby improving the effect of the fixing rope 207 on clamping the cable.

[0038] like Figure 1As shown, as a preferred embodiment of the present invention, the support frame 1 includes a fixed plate 101 and at least one horizontal bracket 103, and a guide slide groove 102 is provided on the fixed plate 101 along the length direction, and the horizontal bracket 103 is slidably connected in the guide slide groove 102, and a plurality of threaded holes 104 are evenly provided in the guide slide groove 102 along the length direction, and the horizontal bracket 103 is connected to one of the threaded holes 104 through a fixing bolt 105, and the cable fixing mechanism 2 is provided on the horizontal bracket 103, and a horizontal mounting groove 106 is provided at the upper end of the horizontal bracket 103 along the length direction, and a sliding portion 107 is provided at the bottom of the shell 201, and the sliding portion 107 is slidably connected in the horizontal mounting groove 106, and a plurality of threaded holes 108 are evenly provided on the horizontal bracket 103 along the length direction, and a fixing bolt 109 is threadedly connected in the threaded hole 108, and a recessed groove matching the fixing bolt 109 is provided on the side wall of the sliding portion 107.

[0039] In the embodiment of the present invention, when in use, the horizontal bracket 103 is inserted into the guide slot 102, and the horizontal bracket 103 slides up and down in the guide slot 102, thereby adjusting the height of the horizontal bracket 103. The fixing bolt 105 passes through the horizontal bracket 103 and is threadedly connected to one of the threaded holes 104, thereby fixing the horizontal bracket 103 to the fixing plate 101. Through the cooperation of the guide slot 102 and the fixing bolt 105 with the threaded hole 104, the height of the horizontal bracket 103 and the spacing between two adjacent horizontal brackets 103 can be adjusted;

[0040] The sliding portion 107 of the housing 201 is inserted into the horizontal mounting groove 106, and the position of the sliding portion 107 in the horizontal mounting groove 106 is adjusted. Then, the corresponding second fixing bolt 109 is screwed so that the end of the second fixing bolt 109 is inserted into the recessed groove on the side wall of the sliding portion 107, thereby fixing the position of the cable fixing mechanism 2. Through the cooperation between the horizontal mounting groove 106 and the sliding portion 107, and the cooperation between the second fixing bolt 109 and the recessed groove, the position between two adjacent cable fixing mechanisms 2 can be adjusted.

[0041] like Figure 2-Figure 10As shown, as a preferred embodiment of the present invention, the tightening structure 3 includes a shell 201 including an annular groove 301 provided on the inner wall, and an inner rotating ring 302 rotatably connected in the annular groove 301, one end of the fixing rope 207 is fixed to the inner wall of the inner rotating ring 302, an outer rotating ring 303 is rotatably connected to the side wall of the shell 201, the outer rotating ring 303 and the inner rotating ring 302 are connected to each other through a transmission component 4, a limiting component 5 is provided on the shell 201, the limiting component 5 is used to limit the reversal of the outer rotating ring 303, the transmission component 4 includes a mounting groove 401 provided through the side wall of the shell 201, a gear 402 is rotatably connected in the mounting groove 401, and the inner rotating ring 302 An outer gear ring 403 is fixed on it, and an inner gear ring 404 is embedded and fixed on the inner side of the outer rotating ring 303. The gear 402 is engaged with the outer gear ring 403 and the inner gear ring 404 at the same time. The limiting component 5 includes a second guide slide groove 501 horizontally arranged on the shell 201, and a guide block 502 is slidably connected in the second guide slide groove 501. An engaging block 504 is fixed at one end of the guide block 502, and a compression spring 503 and a pull rod 505 are fixed at the other end of the guide block 502. The end of the compression spring 503 is fixed in the second guide slide groove 501, and a plurality of limiting grooves 506 are evenly arranged on the side wall of the outer rotating ring 303. The plurality of limiting grooves 506 are radially arranged, and one side of the limiting groove 506 is set as an inclined surface 507.

[0042] In the embodiment of the present invention, when the cable passes through the wire hole 208 and needs to be fixed, the outer rotating ring 303 is rotated, the outer rotating ring 303 drives the inner gear ring 404 to rotate, the inner gear ring 404 drives the gear 402 to rotate, the gear 402 drives the outer gear ring 403 to rotate, the outer gear ring 403 drives the inner rotating ring 302 to rotate, and the inner rotating ring 302 drives one end of the fixing rope 207 to revolve around the axis of the wire hole 208, and then one end of the fixing rope 207 is continued to be wound around the cable, increasing the number of turns of the fixing rope 207 wound around the cable, thereby increasing the contact range between the fixing rope 207 and the circumference of the cable, thereby improving the clamping effect of the fixing rope 207 on the cable. When one end of the fixing rope 207 revolves, as the number of turns of the fixing rope 207 increases, As the outer rotating ring 303 rotates, the inclined surface 507 on the outer rotating ring 303 pushes the engaging block 504 and pushes the engaging block 504 out of the limiting groove 506, thereby not affecting the rotation of the outer rotating ring 303. When the outer rotating ring 303 stops rotating, the compression spring 503 pushes the guide block 502. Under the guidance of the second guide groove 501, the guide block 502 drives the engaging block 504 to insert into the limiting groove 506. The engaging block 504 cooperates with the side of the limiting groove 506 away from the inclined surface 507, thereby limiting the reversal of the outer rotating ring 303 and limiting the expansion of the spiral fixing rope 207, so that the fixing rope 207 can stably clamp the cable.

[0043] When the cable needs to be removed, pull the pull rod 505, the pull rod 505 overcomes the elastic force of the compression spring 503 and drives the guide block 502 to move in the opposite direction, the guide block 502 drives the engaging block 504 to disengage from the limiting groove 506, thereby releasing the reverse restriction of the outer rotating ring 303, and the tension spring 206 pulls the T-shaped slide bar 204 away from the cable, and the T-shaped slide bar 204 drives the spiral fixing rope 207 to open.

[0044] like Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, as a preferred embodiment of the present invention, a second annular groove 601 is provided on the inner wall of the shell 201, and a synchronizer ring 602 is rotatably connected in the second annular groove 601. A plurality of arc holes 603 are evenly provided on the synchronizer ring 602, and the plurality of arc holes 603 are radially arranged. A mating shaft 604 is fixed on the side walls of the plurality of T-shaped slide bars 204, and the plurality of mating shafts 604 are respectively slidably connected in the plurality of arc holes 603. A plurality of avoidance grooves 605 for the movement of the mating shaft 604 are provided on the side wall of the mounting ring 202.

[0045] In an embodiment of the present invention, when the T-shaped slide bar 204 moves, it can drive the matching shaft 604 to move, and the matching shaft 604 moves in the arc hole 603, thereby driving the synchronization ring 602 to rotate. The synchronization ring 602 can make multiple T-shaped slide bars 204 move synchronously toward or in opposite directions through the cooperation of multiple groups of arc holes 603 and matching shafts 604, and then when the T-shaped slide bar 204 and the fixing rope 207 fix the cable, the cable is located at the center of the wire hole 208, the cable is suspended, and does not contact the shell 201, so as to avoid the shell 201 rubbing against the cable when the cable shakes, and the suspended cable is convenient for heat dissipation and inspection.

[0046] The above embodiment of the present invention provides a cable support for a cable trench. In an initial state, the tension spring 206 is in a contracted state. The tension spring 206 pulls the T-shaped slide bar 204 to retract into the guide groove 203. The multiple T-shaped slide bars 204 expand the spiral fixing rope 207 so that the wire hole 208 is located within the spiral fixing rope 207. That is, the diameter of the spiral fixing rope 207 is larger than the diameter of the wire hole 208. This prevents the fixing rope 207 from obstructing the cable from passing through the wire hole 208 during threading.

[0047] When in use, the cable is passed through the wire hole 208 so that the cable is located in the spiral fixing rope 207, and the outer rotating ring 303 is rotated. The outer rotating ring 303 drives the inner gear ring 404 to rotate, and the inner gear ring 404 drives the gear 402 to rotate. The gear 402 drives the outer gear ring 403 to rotate, and the outer gear ring 403 drives the inner rotating ring 302 to rotate. The inner rotating ring 302 drives one end of the fixing rope 207 to revolve around the axis of the wire hole 208 as the center, and then one end of the fixing rope 207 is further wound around the cable, increasing the number of turns of the fixing rope 207 wrapped around the cable, thereby increasing the contact range between the fixing rope 207 and the circumference of the cable, thereby improving the clamping effect of the fixing rope 207 on the cable. When one end of the fixing rope 207 revolves, as the number of turns of the fixing rope 207 increases, the spiral fixing rope 207 is gradually shortened until the spiral fixing rope 207 fixes the cable.

[0048] When the spiral fixing rope 207 is tightened, the spiral fixing rope 207 drives the multiple T-shaped slide bars 204 to approach and contact the cable. The synchronization ring 602 can make the multiple T-shaped slide bars 204 move synchronously through the cooperation of the multiple sets of arc holes 603 and the matching shaft 604. In addition to being used to open the spiral fixing rope 207, the multiple T-shaped slide bars 204 can also clamp the cable. When the T-shaped slide bar 204 and the fixing rope 207 fix the cable, the cable is in the center of the wire hole 208, the cable is suspended in the air, and the spiral fixing rope 207 fully contacts the circumference of the cable, thereby avoiding the problem of local stress and damage to the cable when the cable is clamped by point contact. In addition, by providing multiple T-shaped slide bars 204, the friction between the fixing rope 207 and the cable can be increased, thereby improving the effect of the fixing rope 207 on clamping the cable.

[0049] When the outer rotating ring 303 stops rotating, the compression spring 503 pushes the guide block 502. Under the guidance of the second guide groove 501, the guide block 502 drives the engaging block 504 to insert into the limiting groove 506. The engaging block 504 cooperates with the side of the limiting groove 506 away from the inclined surface 507, thereby limiting the reversal of the outer rotating ring 303 and limiting the opening of the spiral fixing rope 207, so that the fixing rope 207 can stably clamp the cable.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cable support for a cable trench, comprising a support frame, characterized in that: Also includes: A cable fixing mechanism is provided on the support frame, and at least one cable fixing mechanism is provided, and the cable fixing mechanism includes a shell provided on the support frame, and a wire hole provided through the center of the shell; A mounting ring is fixed in the shell, and a plurality of guide grooves are evenly arranged on the mounting ring. The plurality of guide grooves are radially arranged, and T-shaped slide bars are installed in the plurality of radial guide grooves by means of sliding connection. The sliding direction of the T-shaped slide bars is radial. A tension spring is fixed at one end of the plurality of T-shaped slide bars that are away from each other, and the end of the tension spring is fixed in the guide groove. Multiple T-shaped slide bars are provided with storage holes, and fixing ropes are provided in the multiple storage holes. The fixing ropes spirally pass through the multiple storage holes. Two tightening structures are provided on the shell, and the tightening structures are used to drag the ends of the fixing ropes.

2. The cable support for cable trench according to claim 1, characterized in that: The support frame includes a fixed plate and at least one horizontal bracket. A guide groove is provided on the fixed plate along the length direction. The horizontal bracket is slidably connected in the guide groove. A plurality of threaded holes are evenly provided in the guide groove along the length direction. The horizontal bracket is connected to one of the threaded holes through a fixing bolt. The cable fixing mechanism is provided on the horizontal bracket.

3. The cable support for cable trench according to claim 2, characterized in that: A horizontal mounting groove is provided at the upper end of the horizontal bracket along the length direction, a sliding part is provided at the bottom of the shell, the sliding part is slidably connected in the horizontal mounting groove, a plurality of threaded holes 2 are evenly provided on the horizontal bracket along the length direction, the internal threads of the threaded holes 2 are connected to the fixing bolts 2, and a recessed groove matching the fixing bolts 2 is provided on the side wall of the sliding part.

4. The cable support for cable trench according to claim 1, characterized in that: The tightening structure includes a shell including an annular groove set on the inner wall, and an inner rotating ring rotatably connected in the annular groove. One end of the fixing rope is fixed to the inner wall of the inner rotating ring. An outer rotating ring is rotatably connected to the side wall of the shell. The outer rotating ring and the inner rotating ring are connected to each other through a transmission assembly. A limiting assembly is set on the shell, and the limiting assembly is used to limit the reversal of the outer rotating ring.

5. The cable support for cable trench according to claim 4, characterized in that: The transmission assembly includes a mounting groove provided through the side wall of the shell, a gear is rotatably connected in the mounting groove, an outer gear ring is fixed on the inner rotating ring, an inner gear ring is embedded and fixed inside the outer rotating ring, and the gear is engaged with both the outer gear ring and the inner gear ring.

6. The cable support for cable trench according to claim 4, characterized in that: The limiting assembly includes a guide groove 2 horizontally arranged on the shell, a guide block is slidably connected in the guide groove 2, an engaging block is fixed to one end of the guide block, a compression spring and a pull rod are fixed to the other end of the guide block, and the end of the compression spring is fixed in the guide groove 2. A plurality of limiting grooves are evenly arranged on the side wall of the outer rotating ring, and the plurality of limiting grooves are radially arranged, and one side of the limiting groove is set as an inclined surface.

7. The cable support for cable trench according to claim 1, characterized in that: A second annular groove is provided on the inner wall of the shell, and a synchronizer ring is rotatably connected in the second annular groove. A plurality of arc holes are evenly provided on the synchronizer ring, and the plurality of arc holes are radially arranged. Matching shafts are fixed on the side walls of the plurality of T-shaped slide rods, and the plurality of matching shafts are respectively slidably connected in the plurality of arc holes. A plurality of avoidance grooves for the movement of the matching shafts are provided on the side wall of the mounting ring.

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