CN116780451B - Cable support device for cable trench - Google Patents

Abstract

The invention belongs to the technical field of cable support, and particularly relates to a cable support device for a cable trench. When the cable is laid in the cable trench, the supporting component is parallel to the side wall of the cable trench after horizontally rotating, so that the movable space of the cable trench is enlarged, when the cable is laid on the bottom supporting component, the bottom supporting component is only required to be rotated to be perpendicular to the side wall of the cable trench, the supporting component is fixed under the action of the limiting component, and the upper supporting component does not interfere with the laying of the cable, so that the laying quality and the laying efficiency of the cable are greatly improved.

Description

Cable support device for cable trench

Technical Field

The invention belongs to the technical field of cable support, and particularly relates to a cable support device for a cable trench.

Background

Along with the continuous development of the economy in China, the construction pace of modern metropolitan areas is faster and faster, and the power lines, communication lines and other lines in the cities are gradually transferred from the ground to the ground, so that various different power equipment, including cable pit supports, are appeared. The cable pit is a U-shaped pit for burying cables, and the side wall of the cable pit is provided with a cable pit bracket so as to be used for placing various different types of circuits, and the cable pit bracket is generally formed by a mounting plate and a fixed cross beam, and the fixed cross beams on the mounting plate are mutually parallel, so that different circuits can be placed by adopting the structural design.

The fixed cross beam of the existing cable trench support is generally fixedly connected to the mounting plate in a welding or bolting mode, the fixed cross beam is inconvenient to detach, the cable trench support occupies a large space due to limited space in the cable trench, constructors can move inconveniently in the process of installing the cable, and especially when the cable is installed on the fixed cross beam on the cable trench support below, the constructors can work time and labor wasting due to the obstruction of the fixed cross beam above, the working efficiency of the constructors is seriously affected, and the labor intensity is increased.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a cable supporting device for a cable trench, when a cable is laid in the cable trench, the supporting component horizontally rotates and then is parallel to the side wall of the cable trench, so that the movable space of the cable trench is enlarged, when the cable is laid on the bottom supporting component, the bottom supporting component only needs to be rotated to be perpendicular to the side wall of the cable trench, the supporting component is fixed under the action of the limiting component, the upper supporting component cannot interfere with the laying of the cable, and the laying quality and the laying efficiency of the cable are greatly improved.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a cable conductor strutting arrangement for cable pit, including mounting panel, support and regulating part, the mounting panel symmetry sets up at support central line both ends, the mounting panel is connected with the support through the regulating part, is equipped with supporting component and spacing subassembly on the support, the support includes the fixed plate, installs curb plate and dead lever at the fixed plate central line both ends, the both ends fixed mounting of dead lever is on the curb plate, spacing subassembly is installed on the fixed plate, supporting component rotates and installs on the dead lever, supporting component cooperatees with spacing subassembly.

Preferably, the supporting component comprises a rotating rod, a placing plate, a limiting plate and a baffle, wherein the placing plate is fixedly arranged at the top of the rotating rod, one end of the rotating rod is rotatably arranged on the fixing rod, the limiting plate is fixedly arranged on the rotating rod and is positioned at one end close to the fixing rod, the baffle is fixedly arranged at one end of the rotating rod and is positioned at one side of the limiting plate, a gap exists between the baffle and the limiting plate, the supporting component is used for supporting a cable, normal laying of the cable is guaranteed, and the laying quality and the laying efficiency of the cable are improved.

Preferably, the bottom of limiting plate still installs and bends, the side of baffle is the inclined plane, and the clearance that the cable conductor of being convenient for passed through exists between bending and the baffle, and the setting of baffle can play with spacing subassembly matched with purpose, guarantees that spacing subassembly can restrict the dwang, guarantees the normal work of dwang.

Preferably, the limiting component comprises a fixed block, a guide rod, a first spring and a limiting rod, wherein the middle part of the fixed block is provided with a groove, the groove is matched with the limiting plate, the side wall of the groove is provided with a strip-shaped hole, the side wall of the fixed block is fixedly provided with a mounting seat, one end of the guide rod is fixedly arranged on the fixed plate, the other end of the guide rod is fixedly arranged on the mounting seat, the limiting rod is arranged in the strip-shaped hole, the two ends of the limiting rod are provided with sliding blocks, the sliding blocks are slidably arranged on the guide rod, the first spring is sleeved on the guide rod, the first spring is positioned between the sliding blocks and the fixed plate, the limiting component is matched with the supporting component, the purpose of fixing the supporting component can be achieved, the supporting component is prevented from rotating in the cable laying process, and the cable laying efficiency and the cable laying quality are greatly improved.

Preferably, the regulating part comprises a supporting plate, a rotating arm, a moving block, an inner hexagonal groove and a threaded rod, wherein the supporting plate is fixedly arranged on the mounting plate, a through hole is formed in the side wall of the supporting plate, the moving block is arranged in the through hole in a sliding mode, the rotating arm is symmetrically arranged on two sides of the center line of the supporting plate, one end of the rotating arm is rotatably arranged on the moving block, the other end of the rotating arm is rotatably arranged at the end portion of the fixing plate, the threaded rod is rotatably arranged in the through hole, the moving block is arranged on the threaded rod and is in threaded fit with the threaded rod, one end of the threaded rod penetrates through the side wall of the through hole and extends to the outer side of the through hole, the inner hexagonal groove is formed in one side of the supporting plate, the inner hexagonal groove is fixedly arranged at the end portion of the threaded rod, the regulating part can achieve the purpose of regulating the fixing plate, the fixing plate is always in a vertical horizontal plane state, the phenomenon that a cable line falls from a supporting assembly due to inclination of the fixing plate is prevented, and the cable laying efficiency and the quality are guaranteed.

Preferably, the placing plate is evenly provided with a plurality of placing grooves for placing cables, the two ends of the placing plate are fixedly provided with a first vertical plate and a second vertical plate, the first vertical plate is rotationally provided with a wire pressing piece, the wire pressing piece and the second vertical plate are matched with each other to place the plates and are used for supporting the cables, the safety of the cables is guaranteed, and the laying efficiency of the cables is improved.

Preferably, the line ball spare includes rotating turret and extension frame, the rotating turret rotates and installs on first riser, and extension frame slidable mounting is on the rotating turret, and extends frame and second riser matched with, and the line ball spare is used for fixing the cable wire of accomplishing of laying, prevents that the cable wire landing from influencing the laying efficiency of cable wire.

Preferably, the rotating frame comprises a pressing rod, a second spring, a fixing column and cross rods arranged at two ends of the fixing column, the pressing rod is symmetrically arranged at two ends of the cross rods, the two ends of the cross rods are fixedly arranged on the pressing rod, one end of the pressing rod is rotatably arranged on the first vertical plate, one cross rod is fixedly arranged at the other end of the pressing rod, a sliding groove is formed in the other end of the pressing rod, one side of the rotating rod can be rotated through the arrangement of the rotating frame, interference to a cable is prevented when the cable is laid, and the laying efficiency of the cable is greatly guaranteed.

Preferably, the extension frame comprises a connecting rod, a sliding sleeve and a sliding plate, wherein the sliding rod, the sliding sleeve and the sliding plate are symmetrically arranged at two ends of the connecting rod, the sliding rod is arranged in the sliding groove in a sliding mode, one end of the sliding plate is fixedly arranged in the middle of the connecting rod, the sliding sleeve is fixedly arranged at the bottom of the other end of the sliding plate, the sliding sleeve is in sliding connection with the fixed column, the extension frame is matched with the rotating frame, a cable can be fixed on the placing plate, the cable after the cable is prevented from sliding, normal laying of the cable is affected, and the laying efficiency of the cable is reduced.

Preferably, a limit groove is formed in one side of the second vertical plate, an avoidance groove is formed in the top of the second vertical plate, the avoidance groove is communicated with the limit groove, the connecting rod is matched with the limit groove, the sliding plate is matched with the avoidance groove, the limit groove is arranged to limit the connecting rod, the connecting rod is prevented from falling off from the second vertical rod when the cable is pressed, the pressing of the cable is influenced, and the safety of the cable is guaranteed.

The beneficial effects of the invention are as follows:

1) When laying the cable conductor in the cable duct, the supporting component horizontally rotates to enable the supporting component to be parallel to the side wall of the cable duct, the movable space of the cable duct is enlarged, when laying the cable conductor on the bottom supporting component, only the bottom supporting component is required to rotate to be perpendicular to the side wall of the cable duct, the supporting component is fixed under the action of the limiting component, and the supporting component above cannot interfere with the laying of the cable conductor, so that the laying quality and the laying efficiency of the cable conductor are greatly improved.

2) The device supporting component is used for supporting the cable, ensures normal laying of the cable, and improves the laying quality and the laying efficiency of the cable.

3) The setting of this device baffle can play with spacing subassembly matched with purpose, guarantees that spacing subassembly can restrict the dwang, guarantees the normal work of dwang.

4) The spacing subassembly of this device cooperatees with supporting component, can realize the fixed purpose to supporting component, prevents that supporting component from taking place to rotate at the in-process of laying the cable, has improved the laying efficiency and the quality of laying of cable conductor greatly.

5) The setting of this device regulating part can play the purpose of adjusting the fixed plate, guarantees that the fixed plate is in the state of perpendicular horizontal plane all the time, prevents that the fixed plate slope from causing the phenomenon that the cable conductor dropped from supporting component, has guaranteed efficiency and the quality that the cable conductor was laid.

6) The setting of this device placing plate is used for supporting the cable conductor, guarantees the safety of cable conductor, has improved the efficiency that the cable conductor laid.

7) The line pressing component is used for fixing the laid cable and preventing the cable from sliding down to influence the laying efficiency of the cable.

8) The setting of this device rotating turret can rotate one side of dwang, prevents to cause the interference to the cable conductor when cable conductor lays, has guaranteed the laying efficiency of cable conductor greatly.

9) The extension frame of the device is matched with the rotating frame, a cable can be fixed on the placing plate, the laid cable is prevented from sliding, normal laying of the cable is affected, and the laying efficiency of the cable is reduced.

10 The setting of spacing groove can restrict the connecting rod in this device, prevents that the connecting rod from coming off from the second montant when compressing tightly the cable conductor to the depression bar, influences the compaction to the cable conductor, has guaranteed the safety of cable conductor.

Drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic structural view of the bracket in the present invention.

Fig. 3 is an enlarged view of fig. 2 at a in accordance with the present invention.

Fig. 4 is a side view of an adjustment member of the present invention.

Fig. 5 is a schematic view of the structure of the support assembly according to the present invention.

Fig. 6 is an enlarged view of fig. 5 at B in accordance with the present invention.

Fig. 7 is a schematic structural view of a limiting assembly in the present invention.

Fig. 8 is a schematic structural view of the medium voltage wire member of the present invention.

Fig. 9 is an exploded view of the medium voltage wire of the present invention.

Fig. 10 is a schematic view of the structure of the support assembly according to the present invention after rotation.

In the figure: 1. a mounting plate; 2. an adjusting member; 201. a rotating arm; 202. an inner hexagonal groove; 203. a support plate; 204. a through hole; 205. a threaded rod; 3. a bracket; 301. a fixing plate; 302. a fixed rod; 303. a side plate; 4. a support assembly; 401. a rotating lever; 402. placing a plate; 403. a second riser; 404. a placement groove; 405. a first riser; 406. a baffle; 407. bending; 408. a limiting plate; 409. an avoidance groove; 4010. a limit groove; 5. a limit component; 501. a fixed block; 502. a first spring; 503. a guide rod; 504. a sliding block; 505. a mounting base; 506. a groove; 507. a limit rod; 508. a bar-shaped hole; 6. a wire pressing member; 601. an extension frame; 602. a rotating frame; 603. a compression bar; 604. fixing the column; 605. a chute; 606. a cross bar; 607. a second spring; 608. a connecting rod; 609. a slide bar; 6010. a sliding plate; 6011. a sliding sleeve.

Detailed Description

The following description of the embodiments of the present invention will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1, a cable supporting device for a cable trench comprises a mounting plate 1, a support 3 and an adjusting part 2, wherein the mounting plate 1 is symmetrically arranged at two ends of a central line of the support 3, the mounting plate 1 is connected with the support 3 through the adjusting part 2, a supporting component 4 and a limiting component 5 are arranged on the support 3, in order to realize rotation of the supporting component 4 and ensure support of the supporting component 4, as shown in fig. 2, the support 3 comprises a fixing plate 301, side plates 303 and fixing rods 302, wherein the side plates 303 are arranged at two ends of the central line of the fixing plate 301, two ends of each fixing rod 302 are fixedly arranged on the side plates 303, the limiting component 5 is arranged on the fixing plate 301, the supporting component 4 is rotatably arranged on the fixing rods 302, and the supporting component 4 is matched with the limiting component 5.

As a further optimizing scheme of the present invention, as shown in fig. 5, the supporting component 4 includes a rotating rod 401, a placing plate 402, a limiting plate 408 and a baffle 406, where the placing plate 402 is fixedly installed on the top of the rotating rod 401, in order to ensure a movable space in a cable trench and facilitate a worker to lay cables on the lower placing plate 402, one end of the rotating rod 401 is rotatably installed on the fixed rod 302, the limiting plate 408 is fixedly installed on the rotating rod 401 at one end near the fixed rod 302, one end of the baffle 406 is fixedly installed on one side of the limiting plate 408, a gap exists between the baffle 406 and the limiting plate 408, and the gap is used to cooperate with the limiting component 5 to achieve the purpose of limiting the rotating rod 401, so as to ensure the normal operation of the rotating rod 401.

The support component 4 is used for supporting the cable, ensures normal laying of the cable, and improves the laying quality and the laying efficiency of the cable.

As a further optimization scheme of the present invention, as shown in fig. 6, a bend 407 is further installed at the bottom of the limiting plate 408, the side surface of the baffle 406 is an inclined surface, and a gap for facilitating the passage of the cable is formed between the bend 407 and the baffle 406.

The baffle 406 can play a matched with purpose with the spacing subassembly 5, guarantees that spacing subassembly 5 can restrict the dwang 401, guarantees the normal work of dwang 401.

As a further optimizing scheme of the present invention, as shown in fig. 7, the limiting component 5 includes a fixed block 501, a guide rod 503, a first spring 502, and a limiting rod 507, a groove 506 is formed in the middle of the fixed block 501, the groove 506 is matched with the limiting plate 408, a bar-shaped hole 508 is formed on a side wall of the groove 506, an installation seat 505 is fixedly installed on a side wall of the fixed block 501, one end of the guide rod 503 is fixedly installed on the fixed plate 301, the other end of the guide rod 503 is fixedly installed on the installation seat 505, the limiting rod 507 is arranged in the bar-shaped hole 508, sliding blocks 504 are installed at two ends of the limiting rod 507, the sliding blocks 504 are slidably installed on the guide rod 503, the first spring 502 is sleeved on the guide rod 503, and the first spring 502 is located between the sliding blocks 504 and the fixed plate 301.

The setting of baffle 406 inclined plane is convenient for cooperate with the gag lever post 507, when rotating the dwang 401 and making the inclined plane of baffle 406 contact with gag lever post 507, continue to rotate dwang 401, baffle 406 then can promote gag lever post 507 and can make gag lever post 507 along bar hole 508 left-hand movement under the effect of inclined plane, the in-process of gag lever post 507 motion can compress first spring 502, when gag lever post 507 moves the bottom of baffle 406, continue to rotate dwang 401, make gag lever post 507 be located between baffle 406 and the limiting plate 408 and have clearance department, can drive gag lever post 507 and move righthand along bar hole 508 under the effect of first spring 502, thereby make gag lever post 507 be located in the clearance between baffle 406 and the limiting plate 408, realize the fixed purpose to dwang 401.

There is the clearance between baffle 406 and the limiting plate 408, and this clearance is used for cooperating with the gag lever post 507 and realizes the purpose to the dwang 401 restriction, prevents to take place to rotate at the in-process dwang 401 of laying the cable conductor, influences the supporting role to the cable conductor normally, guarantees the work that dwang 401 is normal.

Spacing subassembly 5 cooperatees with supporting component 4, can realize the fixed purpose to supporting component 4, prevents that supporting component 4 from taking place to rotate at the in-process of laying the cable, has improved the laying efficiency and the quality of laying of cable conductor greatly.

As a further optimization scheme of the present invention, as shown in fig. 3 and 4, the adjusting member 2 includes a supporting plate 203, a rotating arm 201, a moving block (not shown in the drawings), an internal hexagonal groove 202 and a threaded rod 205, the supporting plate 203 is fixedly installed on the mounting plate 1, a through hole 204 is opened on a side wall of the supporting plate 203, the moving block is slidably disposed in the through hole 204, the rotating arm 201 is symmetrically disposed at both sides of a center line of the supporting plate 203, one end of the rotating arm 201 is rotatably installed on the moving block, the other end of the rotating arm 201 is rotatably installed at an end of the fixed plate 301, the threaded rod 205 is rotatably installed in the through hole 204, the moving block is installed on the threaded rod 205 and is in threaded engagement with the threaded rod 205, one end of the threaded rod 205 extends to an outside of the through hole 204 through a side wall of the through hole 204, the internal hexagonal groove 202 is disposed at one side of the supporting plate 203, and the internal hexagonal groove 202 is fixedly installed at an end of the threaded rod 205.

The mounting plate 1 is fixed on the side wall of the cable trench, the purpose of fixing the device is achieved, when the bracket 3 inclines, the inner hexagonal groove 202 is screwed by a wrench or an electric wrench to drive the threaded rod 205 to rotate, the threaded rod 205 rotates to drive the moving block to move along the through hole 204, the moving block moves to drive the rotating arm 201 to rotate, one end of the fixing plate 301 is jacked outwards, the purpose of adjusting the fixing plate 301 is achieved, the fixing plate 301 is always vertical to the horizontal plane, and the safety of a cable conductor is guaranteed.

The setting of regulating part 2 can play the purpose of adjusting fixed plate 301, guarantees that fixed plate 301 is in the state of perpendicular horizontal plane all the time, prevents that fixed plate 301 slope from causing the phenomenon that the cable wire dropped from supporting component 4, has guaranteed efficiency and the quality that the cable wire laid.

As a further optimization scheme of the present invention, as shown in fig. 5, the placing plate 402 is uniformly provided with a plurality of placing grooves 404 for placing cables, two ends of the placing plate 402 are fixedly provided with a first riser 405 and a second riser 403, the first riser 405 is rotatably provided with a wire pressing member 6, and the wire pressing member 6 is matched with the second riser 403.

The setting of placing plate 402 is used for supporting the cable conductor, guarantees the safety of cable conductor, has improved the efficiency that the cable conductor laid.

As a further preferred embodiment of the present invention, as shown in fig. 8, the wire pressing member 6 includes a rotating frame 602 and an extending frame 601, the rotating frame 602 is rotatably mounted on the first riser 405, the extending frame 601 is slidably mounted on the rotating frame 602, and the extending frame 601 is matched with the second riser 403.

The line pressing piece 6 is used for fixing the laid cable and preventing the cable from sliding down to influence the laying efficiency of the cable.

As a further optimizing scheme of the present invention, as shown in fig. 9, the rotating frame 602 includes a pressing rod 603, a second spring 607, a fixing column 604, and a cross rod 606 installed at two ends of the fixing column 604, the pressing rod 603 is symmetrically disposed at two ends of the cross rod 606, two ends of the cross rod 606 are fixedly installed on the pressing rod 603, the pressing rod 603 is fixedly installed at two ends of the cross rod 606, one end of the pressing rod 603 is rotatably installed on the first riser 405, one of the cross rods 606 is fixedly installed at the other end of the pressing rod 603, and a chute 605 is opened at the other end of the pressing rod 603.

The setting of rotating turret 602 can rotate one side of dwang 401, prevents to cause the interference to the cable conductor when cable conductor lays, has guaranteed the laying efficiency of cable conductor greatly.

As a further optimization scheme of the present invention, as shown in fig. 9, the extension frame 601 includes a connecting rod 608, sliding rods 609 symmetrically installed at two ends of the connecting rod 608, a sliding sleeve 6011, and a sliding plate 6010, wherein the sliding rods 609 are slidably installed in the sliding grooves 605, one end of the sliding plate 6010 is fixedly installed at the middle part of the connecting rod 608, the sliding sleeve 6011 is fixedly installed at the bottom of the other end of the sliding plate 6010, and the sliding sleeve 6011 is slidably connected with the fixed column 604.

Extension frame 601 and rotating turret 602 cooperation can fix the cable conductor on placing board 402, prevents that the cable conductor of accomplishing of laying from taking place to slide, influences the normal laying of cable conductor, reduces the laying efficiency of cable conductor.

As a further optimization scheme of the present invention, as shown in fig. 5, 8 and 9, a limit groove 4010 is formed on one side of the second vertical plate 403, an avoidance groove 409 is formed on the top of the second vertical plate 403, the avoidance groove 409 is communicated with the limit groove 4010, the connecting rod 608 is matched with the limit groove 4010, and the sliding plate 6010 is matched with the avoidance groove 409.

Under the action of the second spring 607, the connecting rod 608 can be ensured to be in close contact with the limit groove 4010 all the time, and the compression effect of the compression rod 603 on the cable is greatly ensured.

The setting of spacing groove 4010 can restrict connecting rod 608, prevents that connecting rod 608 from coming off from the second montant when compressing tightly the cable conductor to depression bar 603, influences compressing tightly the cable conductor, has guaranteed the safety of cable conductor.

When the cable is laid, the pressing rod 603 is rotated to enable the pressing rod 603 to be arranged on the top of the cable, then the connecting rod 608 is pulled to drive the sliding rod 609 to move in the sliding groove 605, the sliding sleeve 6011 moves along the fixed column 604, the second spring 607 is compressed in the moving process of the sliding sleeve 6011 until the connecting rod 608 is placed in the limiting groove 4010, and the connecting rod 608 is guaranteed to be matched with the limiting groove 4010 all the time because the second spring 607 is in a compressed state.

Fig. 10 is a schematic structural diagram of the support assembly of the invention after rotation, so that the movable space of a worker in a cable trench can be increased, the worker can conveniently lay cables, and the laying efficiency is greatly improved.

The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention, as it is intended to provide those skilled in the art with various modifications, additions and substitutions to the specific embodiments disclosed and those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (6)

1. The cable supporting device for the cable trench comprises a mounting plate, a bracket and an adjusting piece, wherein the mounting plate is symmetrically arranged at two ends of a central line of the bracket;

the support assembly comprises a rotating rod, a placing plate, a limiting plate and a baffle, wherein the placing plate is fixedly arranged at the top of the rotating rod, one end of the rotating rod is rotatably arranged on the fixed rod, the limiting plate is fixedly arranged on the rotating rod and is positioned at one end close to the fixed rod, the baffle is fixedly arranged at one end of the rotating rod and is positioned at one side of the limiting plate, and a gap is reserved between the baffle and the limiting plate;

the bottom of the limiting plate is also provided with a bend, the side surface of the baffle is an inclined surface, and a gap for facilitating the passage of a cable is reserved between the bend and the baffle;

the limiting assembly comprises a fixed block, a guide rod, a first spring and a limiting rod, wherein a groove is formed in the middle of the fixed block, the groove is matched with the limiting plate, a strip-shaped hole is formed in the side wall of the groove, an installation seat is fixedly installed on the side wall of the fixed block, one end of the guide rod is fixedly installed on the fixed plate, the other end of the guide rod is fixedly installed on the installation seat, the limiting rod is arranged in the strip-shaped hole, sliding blocks are installed at two ends of the limiting rod, the sliding blocks are slidably installed on the guide rod, the first spring is sleeved on the guide rod, and the first spring is located between the sliding blocks and the fixed plate;

the adjusting piece comprises a supporting plate, a rotating arm, a moving block, an inner hexagonal groove and a threaded rod, wherein the supporting plate is fixedly arranged on the mounting plate, a through hole is formed in the side wall of the supporting plate, the moving block is arranged in the through hole in a sliding mode, the rotating arm is symmetrically arranged on two sides of the center line of the supporting plate, one end of the rotating arm is rotatably arranged on the moving block, the other end of the rotating arm is rotatably arranged at the end portion of the fixing plate, the threaded rod is rotatably arranged in the through hole, the moving block is arranged on the threaded rod and is in threaded fit with the threaded rod, one end of the threaded rod penetrates through the side wall of the through hole and extends to the outer side of the through hole, the inner hexagonal groove is formed in one side of the supporting plate, and the inner hexagonal groove is fixedly arranged at the end portion of the threaded rod.

2. The cable supporting device for a cable trench as set forth in claim 1, wherein the placement plate is provided with a plurality of placement grooves for placing cables, a first riser and a second riser are fixedly installed at two ends of the placement plate, and a wire pressing member is rotatably installed on the first riser and is matched with the second riser.

3. The cable support device for a cable pit of claim 2, wherein the wire pressing member includes a rotating frame rotatably mounted on the first riser and an extending frame slidably mounted on the rotating frame and cooperating with the second riser.

4. A cable support device for a cable pit according to claim 3, wherein the rotating frame comprises a pressing rod, a second spring, a fixing column and cross rods arranged at two ends of the fixing column, the pressing rod is symmetrically arranged at two ends of the cross rods, the two ends of the cross rods are fixedly arranged on the pressing rod, one end of the pressing rod is rotatably arranged on the first vertical plate, one of the cross rods is fixedly arranged at the other end of the pressing rod, and a sliding groove is formed in the other end of the pressing rod.

5. The cable supporting device for a cable pit according to claim 4, wherein the extension frame comprises a connecting rod, sliding rods symmetrically installed at two ends of the connecting rod, sliding sleeves and a sliding plate, the sliding rods are slidably arranged in the sliding grooves, one end of the sliding plate is fixedly installed in the middle of the connecting rod, the sliding sleeves are fixedly installed at the bottom of the other end of the sliding plate, and the sliding sleeves are slidably connected with the fixed columns.

6. The cable support device for a cable pit according to claim 5, wherein a limit groove is formed in one side of the second vertical plate, an avoidance groove is formed in the top of the second vertical plate, the avoidance groove is communicated with the limit groove, the connecting rod is matched with the limit groove, and the sliding plate is matched with the avoidance groove.