CN112563991A

CN112563991A - Height-adjustable cable bridge

Info

Publication number: CN112563991A
Application number: CN202011356148.0A
Authority: CN
Inventors: 闵信忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-03-26
Anticipated expiration: 2040-11-27
Also published as: CN112563991B

Abstract

The invention discloses a height-adjustable cable bridge in the technical field of electric power, which comprises an underframe, wherein a cushion seat is fixed in the underframe, a connecting plate is fixed on the upper side of the cushion seat, the connecting plate is connected with a plurality of mounting seats which are arranged at intervals in the left-right direction, two adjacent mounting seats, two adjusting frames which are arranged at intervals in the front-rear direction are respectively connected between an installation seat at the outer end and the inner wall of the underframe in a liftable manner, one ends of the adjusting frames in the left-right direction are fixedly connected with lifting racks, a first lifting gear is rotatably connected in an installation groove at the outer side of the underframe and is meshed with the corresponding lifting rack, a second lifting gear is rotatably connected in the installation seat and is meshed with the corresponding lifting rack, adjusting components which respectively correspond to the adjusting frames are connected on a connecting plate, each adjusting component comprises a liftable adjusting seat, and at least one driven block connected with an adjusting plate is arranged at the left end and the right end of the adjusting seat; the invention has compact structure and convenient cable disassembly and assembly.

Description

Height-adjustable cable bridge

Technical Field

The invention belongs to the technical field of electric power, and particularly relates to a height-adjustable cable bridge.

Background

The cable bridge mainly has the effects of carrying out cross-under wiring on cables, facilitating people to lap and arrange the cables, and having certain fixing and protecting effects on the cables. In the prior art, the invention with the name of 'a cable bridge rack', publication number CN 11181722 a, publication number 2020.10.23, comprises a main bridge rack, wherein the upper ends of the two sides of the main bridge rack are respectively provided with a mounting plate, the two ends inside the main bridge rack are respectively provided with an interval adjusting mechanism, each adjusting mechanism respectively comprises an adjusting component, each adjusting component comprises two moving plates capable of moving horizontally and oppositely, each moving plate is respectively provided with a cable clamping head, each cable clamping head comprises a second threaded column, a second locking nut and a second handle, the second threaded column can rotatably penetrate through the two sides of a first driving box to be connected with the center of a gear, the second locking nut is sleeved on the second threaded column, the second locking nut is in threaded connection with the second threaded column, the first driving box is provided with a second locking piece capable of being in matched connection with the second locking nut, the second handle is arranged at the tail end of the second threaded column; in this design, when needs fixed cable, the staff manually rotates the second handle, the second handle drives the second lock nut rotatory, the second lock nut drives the gear rotation, the gear drives every rack removal simultaneously, every rack removes along every slide rail through every slider respectively, every rack removes along every rectangle opening drive every arc clamp jig through every undulant version respectively, it presss from both sides the cable clamp to make two arc clamp jigs, the height that presss from both sides the clamp jig can't be adjusted as required, the mounting height of cable is not adjustable, and also can't be according to the height of in-service use dynamic adjustment cable in the use.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a height-adjustable cable bridge, solves the technical problem that the installation height in the prior art is not adjustable, and has the advantages of compact structure and convenient assembly and disassembly for realizing the functions of adjusting and fixing the height of a cable.

The purpose of the invention is realized as follows: a height-adjustable cable bridge comprises an underframe, wherein the underframe is provided with an upward opening, a pad seat is fixed in the opening of the underframe, a connecting plate is fixed on the upper side of the pad seat, the connecting plate is connected with a plurality of installation seats arranged at intervals in the left and right directions, two adjusting frames arranged at intervals in the front and back directions are respectively connected between the adjacent two installation seats, the installation seats at the outer ends and the inner wall of the underframe in a lifting way, one ends of the adjusting frames in the left and right directions are fixedly connected with lifting racks, the lifting racks at the outer ends are arranged relative to the inner wall of the underframe, the lifting racks in the middle are arranged relative to the installation seats, two mounting grooves are formed in the outer side of the underframe, the underframe is rotatably connected with a first lifting gear through the mounting grooves, the first lifting gear is meshed with the corresponding lifting racks, a mounting opening is formed in the downward end, the second lifting gear is meshed with the corresponding lifting rack, the connecting plate is connected with adjusting assemblies respectively corresponding to the adjusting frames, each adjusting assembly comprises a lifting adjusting seat, and at least one driven block connected with an adjusting plate is arranged at each of the left end and the right end of each adjusting seat.

According to the invention, a cable firstly passes through a cable hole between an adjusting frame and an adjusting seat, when the height of the adjusting frame at the outer end needs to be adjusted according to the installation height required by the cable, a first lifting gear is controlled to rotate, the lifting gear drives a lifting rack to move, when the adjusting frame at the outer end moves to the required height, the first lifting gear stops rotating, a driven block moves towards the direction of the adjusting frame, the adjusting frame is fixed on an underframe by the driven block, and the stress of the first lifting gear is reduced; when the height of the middle adjusting frame needs to be adjusted, the second lifting gear is controlled to rotate, the middle lifting rack moves under the action of the second lifting gear, when the middle adjusting frame moves to the required height, the second lifting gear stops rotating, meanwhile, the middle driven block moves towards the direction of the adjusting frame, the middle adjusting frame is fixed, the stress of the second lifting gear is reduced, the middle adjusting seat rises until the cable is tightly pressed, and the position of the cable is automatically adjusted and fixed; the invention has compact structure, convenient cable disassembly and assembly and convenient cable position adjustment; the cable position adjusting device can be applied to occasions needing frequent cable position adjustment.

In order to further realize the automatic rising of alignment jig, fixedly connected with elevator motor one in the mounting groove of chassis, elevator motor is last to be connected with pivot one, elevator gear one is connected in pivot one, all opens the lift groove on chassis and the mount pad that the lifting rack position corresponds, elevator gear one passes the lift groove and meshes with the lifting rack that corresponds, mount pad through mount pad fixedly connected with elevator motor two, be connected with pivot two on the elevator motor two, elevator gear two is connected on pivot two, and still fixedly connected with fixed support seat one in the mounting groove of chassis, the one end that the pivot one outwards stretched out rotationally connects on fixed support seat one, and still fixedly connected with fixed support seat two in the mount pad, the one end that the pivot two outwards stretched out rotationally connects on fixed support seat two.

In order to further realize the regulation of cable clamp force, adjusting part is including fixing the fixed cover that just has the installation cavity on the chassis, fixed cover is connected with the removal seat through the installation cavity is movably, be equipped with the drive block between driven piece and the regulation seat outside, drive block downwardly extending's one end with remove seat fixed connection, the drive block can slide from top to bottom along the alignment jig inner wall with the regulation seat outside, is equipped with inclined plane one on the drive block, and one side of the relative drive block of driven piece is equipped with inclined plane two, inclined plane one can laminate on inclined plane two, but connect on the connecting plate from the driven piece side to side with sliding, when the drive block descends, the driven piece moves towards the alignment jig place direction, and the driven piece of the regulation seat left and right sides can be fixed the alignment jig.

In order to further improve the lifting reliability of the adjusting frame, a plurality of first fixing rails are distributed on the inner wall of the bottom frame, a plurality of second fixing rails which are arranged opposite to the first fixing rails are distributed at the left end and the right end of the mounting seat, the left end and the right end of the adjusting frame at the outer end are connected to the first fixing rails and the second fixing rails in a sliding mode respectively, and the left end and the right end of the adjusting frame in the middle are connected to the second fixing rails in a sliding mode respectively.

As a further improvement of the invention, the inner sides of the bottom frames above the mounting seats are respectively provided with a connecting rail, and the bottom frames are detachably connected with a top plate.

In order to further make things convenient for the dismouting of roof, chassis one end up is opened there is the spread groove, the chassis inner wall of spread groove below is equipped with the connection rail, open on the roof have with be connected rail complex recess, the roof slides along being connected the rail through the recess, both ends are in the spread groove about the roof, the roof flushes with the upside of chassis, a plurality of mounting holes of having arranged on the roof.

In order to further realize the lifting of the driving block and the adjusting seat, an upper motor plate and a lower motor plate are fixedly connected in the fixed sleeve, an upper driving motor is fixedly connected on the upper motor plate, a lower driving motor is fixedly connected at the downward end of the lower motor plate, a motor supporting seat is connected on the fixing sleeve between the lower motor plate and the lower driving motor, a first transmission shaft is connected on the lower driving motor, one end of the first transmission shaft extending upwards is rotatably connected on the motor supporting seat, the movable seat is in threaded connection with a first transmission shaft between the motor support seat and the lower motor plate, the motor support seat is arranged below the upper driving motor, the upper driving motor is connected with an output shaft, the output shaft is connected with a second transmission shaft, the adjusting seat is in threaded connection with the second transmission shaft, and the lower portion of the adjusting seat can slide up and down along the inner wall of the fixed sleeve.

In order to further improve the lifting reliability of the adjusting seat, the outer side of the upper part of the fixed sleeve is connected with a supporting sleeve, a polygonal sliding groove is formed in the supporting sleeve, and the adjusting seat can slide up and down along the sliding groove; the driven block can horizontally slide along the upper side of the supporting sleeve, a friction pad is arranged on one side, opposite to the adjusting frame, of the driven block, and the friction force between the driven block and the adjusting frame can be increased through the friction pad.

In order to further realize the lift of drive block, the downside of drive block is equipped with the lifter, the lifter down in proper order from last adjust seat, go up motor plate, motor supporting seat back and remove seat fixed connection down.

In order to further improve the reliability of the vertical sliding of the driving block, the inner wall of the adjusting frame is provided with a limiting assembly corresponding to the driving block, the limiting assembly is composed of two limiting steps arranged at intervals in the front-back direction, and the front side and the back side of the driving block are respectively attached to the two limiting steps.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a first perspective view of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a partially enlarged view of fig. 2 at B.

Fig. 5 is a second perspective view of the present invention.

Fig. 6 is a partially enlarged view of C in fig. 5.

Fig. 7 is a three-dimensional structure diagram of the present invention.

Fig. 8 is a partial enlarged view of fig. 7 at D.

Fig. 9 is a schematic structural view of the second lifting motor in the mounting seat.

Fig. 10 is a partial enlarged view at E in fig. 9.

Fig. 11 is a schematic structural view of an adjusting assembly according to the present invention.

The device comprises a connecting plate 1, a cushion seat 2, an underframe 3, a top plate 4, a mounting seat 5, an adjusting frame 6, a lifting rack 7, a first fixed track 8, a second fixed track 9, a first lifting motor 10, a first rotating shaft 11, a lifting groove 12, a first lifting gear 13, a first fixed support seat 14, a lifting rod 15, a driven block 16, a limiting step 17, a driving block 18, an adjusting seat 19, a second lifting motor 20, a second lifting gear 21, a second fixed support seat 23, a second rotating shaft 23, a lower driving motor 24, a movable seat 25, a motor support seat 26, an output shaft 27, a fixed sleeve 28, a lower motor plate 29, a sliding groove 30, a friction pad 31, a guide block 32, a second transmission shaft 33, an upper motor plate 34, an upper driving motor 35, a first transmission shaft 36, a connecting hole 37, a mounting hole 38, a supporting sleeve 39, a mounting hole 40 and a mounting groove.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 11, a height-adjustable cable bridge comprises an underframe 3, the underframe 3 has an upward opening, a pad 2 is fixed in the opening of the underframe 3, a connecting plate 1 is fixed on the upper side of the pad 2, the connecting plate 1 is connected with a plurality of mounting seats 5 arranged at intervals in the left-right direction, two adjusting frames 6 arranged at intervals in the front-rear direction are respectively connected between the two adjacent mounting seats 5 and the outer mounting seats 5 and the inner wall of the underframe 3 in a lifting manner, one ends of the adjusting frames 6 in the left-right direction are fixedly connected with lifting racks 7, the lifting racks 7 at the outer ends are arranged relative to the inner wall of the underframe 3, the lifting racks 7 in the middle are arranged relative to the mounting seats 5, two mounting grooves 41 are arranged on the outer side of the underframe 3, a lifting gear 13 is rotatably connected in the mounting grooves 41 of the underframe 3, the lifting gear 13 is engaged with the corresponding lifting rack 7, a mounting opening 40 is arranged, the mounting seat 5 is internally and rotatably connected with a second lifting gear 21, the second lifting gear 21 is meshed with a corresponding lifting rack 7, and the specific structure for realizing the lifting of the adjusting frame 6 is that a first lifting motor 10 is fixedly connected in a mounting groove 41 of the underframe 3, a first rotating shaft 11 is connected on the first lifting motor 10, a first lifting gear 13 is connected on the first rotating shaft 11, lifting grooves 12 are respectively formed on the underframe 3 and the mounting seat 5 corresponding to the positions of the lifting racks 7, the first lifting gear 13 penetrates through the lifting grooves 12 to be meshed with the corresponding lifting racks 7, a second lifting motor 20 is fixedly connected in a mounting opening 40 of the mounting seat 5, a second rotating shaft 23 is connected on the second lifting motor 20, the second lifting gear 21 is connected on the second rotating shaft 23, a first fixed support 14 is also fixedly connected in the mounting groove 41 of the underframe 3, and the end of the first rotating shaft 11 extending outwards is rotatably connected on, a second fixed supporting seat 23 is fixedly connected in the mounting seat 5, and one end of the second rotating shaft 23, which extends outwards, is rotatably connected to the second fixed supporting seat 23; the connecting plate 1 is connected with adjusting components respectively corresponding to the adjusting frames 6, each adjusting component comprises a lifting adjusting seat 19, and the left end and the right end of each adjusting seat 19 are provided with at least one driven block 16 connected with the adjusting plate.

In order to further realize the adjustment of the cable clamping force, the adjusting component comprises a fixed sleeve 28 which is fixed on the bottom frame 3 and is provided with an installation cavity, the fixed sleeve 28 is movably connected with a moving seat 25 through the installation cavity, a driving block 18 is arranged between the driven block 16 and the outer side of the adjusting seat 19, one end of the driving block 18 extending downwards is fixedly connected with the moving seat 25, the driving block 18 can slide up and down along the inner wall of the adjusting frame 6 and the outer side of the adjusting seat 19, the inner wall of the adjusting frame 6 is provided with a limit component corresponding to the driving block 18, the limit component is composed of two limit steps 17 arranged at intervals in the front and back direction, the front side and the back side of the driving block 18 are respectively attached on the two limit steps 17, the driving block 18 is provided with a first inclined surface, one side of the driven block 16 opposite to the driving block 18 is provided with a second inclined surface which can be attached on the, when the driving block 18 descends, the driven block 16 moves towards the direction of the adjusting frame 6, and the driven blocks 16 on the left and right sides of the adjusting seat 19 can fix the adjusting frame 6.

In order to further improve the lifting reliability of the adjusting frame 6, a plurality of first fixing rails 8 are distributed on the inner wall of the bottom frame 3, a plurality of second fixing rails 9 which are opposite to the first fixing rails 8 are distributed at the left end and the right end of the mounting seat 5, the left end and the right end of the adjusting frame 6 at the outer end are respectively connected to the first fixing rails 8 and the second fixing rails 9 in a sliding mode, and the left end and the right end of the adjusting frame 6 in the middle are respectively connected to the second fixing rails 9 in a sliding mode.

In order to further realize the lifting of the driving block 18 and the adjusting seat 19, an upper motor plate 34 and a lower motor plate 29 are fixedly connected in the fixed sleeve 28, an upper driving motor 35 is fixedly connected on the upper motor plate 34, a lower driving motor 24 is fixedly connected at the downward end of the lower motor plate 29, a motor supporting seat 26 is connected on the fixed sleeve 28 between the lower motor plate 29 and the lower driving motor 24, a first transmission shaft 36 is connected on the lower driving motor 24, the upward extending end of the first transmission shaft 36 is rotatably connected on the motor supporting seat 26, the moving seat 25 is in threaded connection with the first transmission shaft 36 between the motor supporting seat 26 and the lower motor plate 29, the motor supporting seat 26 is arranged below the upper driving motor 35, an output shaft 27 is connected on the upper driving motor 35, a second transmission shaft 33 is connected on the output shaft 27, the adjusting seat 19 is in threaded connection on the second transmission shaft 33, and the lower part of the adjusting seat 19 can; the outer side of the upper part of the fixed sleeve 28 is connected with a supporting sleeve 39, the upper part of the supporting sleeve 39 is connected with the connecting plate 1, a polygonal sliding groove 30 is formed in the supporting sleeve 39, and the adjusting seat 19 can slide up and down along the sliding groove 30; the driven block 16 can horizontally slide along the upper side of the supporting sleeve 39, a friction pad 31 is arranged on one side of the driven block 16, which is arranged opposite to the adjusting frame 6, and the friction pad 31 can increase the friction force between the driven block 16 and the adjusting frame 6; the lower side of the driving block 18 is provided with a lifting rod 15, the upper part of the supporting sleeve 39 is connected with a guide block 32, the downward side of the guide block 32 is abutted against the upper side of the supporting sleeve 39, and the lifting rod 15 sequentially vertically penetrates through the guide block 32, the sliding seat, the upper motor plate 34 and the motor supporting seat 26 from top to bottom and then is fixedly connected with the movable seat 25.

In order to fix the bottom frame 3 conveniently, a plurality of coaxial connecting holes 37 are arranged at the lower part of the bottom frame 3, connecting rails are arranged on the inner side of the bottom frame 3 above the mounting seat 5, a top plate 4 is detachably connected to the bottom frame 3, a connecting groove is formed in the upward end of the bottom frame 3, the connecting rails are arranged on the inner wall of the bottom frame 3 below the connecting groove, a groove matched with the connecting rails is formed in the top plate 4, the top plate 4 slides along the connecting rails through the groove, the left end and the right end of the top plate 4 are arranged in the connecting groove, the top plate 4 is flush with the upper side of the bottom frame 3; the underframe 3 is fixedly connected at a required position by using anchor rods to penetrate through the connecting holes 37, nuts are screwed on the anchor rods to press the nuts on the underframe 3, and finally the top plate 4 is connected with the underframe 3.

In the invention, a screw is screwed into each connecting hole 37, one end of the screw, which extends out of the lower side of the bottom frame 3 downwards, is connected with a fixed platform or an equipment platform, and a nut is screwed on the screw above the bottom frame 3, so that the nut is abutted against the bottom frame 3, and the bottom frame 3 is fixed; the cable firstly passes through a cable hole between the adjusting frame 6 and the adjusting seat 19, when the height of the adjusting frame 6 at the outer end needs to be adjusted according to the installation height required by the cable, the corresponding first lifting motor 10 is controlled to act, the first rotating shaft 11 rotates, the first rotating shaft 11 drives the first lifting gear 13 to rotate, the lifting rack 7 moves in the height direction under the action of the first lifting gear 13, the lifting rack 7 drives the adjusting frame 6 to slide up and down along the first fixed rail 8 and the second fixed rail 9, the action direction of the first lifting motor 10 is controlled, the adjusting frame 6 moves in the required direction, and when the adjusting frame 6 moves to the required height, the first lifting motor 10 stops acting; when the height of the middle adjusting frame 6 needs to be adjusted, the corresponding second lifting motor 20 is controlled to act, the second rotating shaft 23 rotates, the second rotating shaft 23 drives the second lifting gear 21 to rotate, the middle lifting rack 7 moves up and down under the action of the second lifting gear 21, the lifting rack 7 drives the adjusting frame 6 to slide up and down along the second fixed rail 9, and when the corresponding adjusting frame 6 moves to the required height, the second lifting motor 20 stops acting; when the corresponding lower driving motor 24 acts, the lower driving motor 24 drives the first transmission shaft 36 to rotate, the first transmission shaft 36 drives the movable base 25 to move, the action direction of the lower driving motor 24 is controlled, the movable base 25 moves downwards, the movable base 25 drives the lifting rod 15 and the driving block 18 to move downwards, the driving block 18 drives the driven block 16 to move outwards, when the driven block 16 further fixes the adjusting frame 6, the height adjustment of the adjusting frame 6 is finished, meanwhile, the upper driving motor 35 acts, the output shaft 27 rotates, the output shaft 27 drives the second transmission shaft 33 to rotate, the second transmission shaft 33 drives the adjusting seat 19 to move, when the cable is tightly pressed on the adjusting frame 6 by the adjusting seat 19, the position adjustment and fixation in the height direction of the cable are realized, the top plate 4 slides along the connecting rail through the groove, and the top plate 4 is connected on the bottom frame 3 by a fastener penetrating through the mounting hole 38, so that the structure for mounting the cable is prevented from being damaged manually; in the using process, when the cable needs to be pulled to meet the field use requirement, the lower driving motor 24 reversely acts, the driving block 18 ascends, the driven block 16 can leave the adjusting frame 6, the cable can be pulled at the moment, and when the cable needs to be fixed again, the fixing steps are repeated; the cable fixing device is compact in structure and convenient for cable installation, and the height of the adjusting frame 6 is adjusted by jointly arranging the lifting gear, the lifting rack 7, the adjusting frame 6, the driven block 16, the lower driving motor 24, the driving block 18 and the lifting rod 15, and the adjusting frame 6 can be fixed, so that the fixing reliability of the adjusting frame 6 is improved; the cable position adjusting device can be applied to occasions needing frequent cable position adjustment.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. The utility model provides a height-adjustable's cable testing bridge which characterized in that: comprises a chassis with an opening

The lifting rack is fixedly connected with one end of the adjusting frame in the left and right direction, the lifting rack at the outer end is arranged relative to the inner wall of the chassis, the middle lifting rack is arranged relative to the installing seat, two installing grooves are formed in the outer side of the chassis, the chassis is rotatably connected with a first lifting gear through the installing grooves, the first lifting gear is meshed with a corresponding lifting rack, the downward end of the installing seat is provided with an installing opening, a second lifting gear is rotatably connected in the installing seat and meshed with a corresponding lifting rack, the connecting plate is connected with adjusting components respectively corresponding to the adjusting frames, each adjusting component comprises a lifting adjusting seat, and the left end and the right end of each adjusting seat are at least provided with a driven block connected with the adjusting plate.

2. A height adjustable cable tray as claimed in claim 1, wherein: fixedly connected with elevator motor one in the mounting groove of chassis, elevator motor is last to be connected with pivot one, elevator gear one is connected in pivot one, all opens the lifting groove on chassis and the mount pad that lifting rack position corresponds, elevator gear one passes lifting groove and the meshing of the lifting rack that corresponds, and the mount pad is through mount pad fixedly connected with elevator motor two, be connected with pivot two on the elevator motor two, elevator gear two is connected in pivot two, and fixedly connected with fixed support seat one is gone back in the mounting groove of chassis, and the one end that the pivot one outwards stretched out rotationally connects on fixed support seat one, and fixedly connected with fixed support seat two is gone back in the mount pad, and the one end that the pivot two outwards stretched out rotationally connects on fixed support seat two.

3. A height adjustable cable tray as claimed in claim 1, wherein: the adjusting part is including fixing the fixed cover that just has the installation cavity on the chassis, fixed cover is connected with the removal seat through the installation cavity is movably, be equipped with the drive block between driven piece and the regulation seat outside, drive block downwardly extending's one end with remove a fixed connection, the drive block can slide from top to bottom along the alignment jig inner wall and the regulation seat outside, is equipped with inclined plane one on the drive block, and one side of the relative drive block of driven piece is equipped with inclined plane two, inclined plane one can laminate on inclined plane two, but connect on the connecting plate from the driven piece horizontal slip, when the drive block descends, the driven piece moves towards the alignment jig place direction, and the driven piece of adjusting the seat left and right sides can be fixed the alignment jig.

4. A height adjustable cable tray as claimed in claim 1, wherein: a plurality of first fixing rails are distributed on the inner wall of the underframe, a plurality of second fixing rails which are opposite to the first fixing rails are distributed at the left end and the right end of the mounting seat, the left end and the right end of the adjusting frame at the outer end are connected to the first fixing rails and the second fixing rails in a sliding mode respectively, and the left end and the right end of the adjusting frame in the middle are connected to the second fixing rails in a sliding mode respectively.

5. A height adjustable cable tray as claimed in claim 1, wherein: the chassis inboard of mount pad top all is equipped with the connection rail, detachably is connected with the roof on the chassis.

6. A height adjustable cable tray as claimed in claim 4, wherein: the utility model discloses a roof, including chassis, roof, connecting groove, roof, connecting rail, connecting groove, roof, connecting rail, roof, connecting groove, roof.

7. A height adjustable cable tray as claimed in claim 2, wherein: fixedly connected with goes up motor plate and lower motor plate in the fixed sleeve, go up driving motor on the fixedly connected with of motor plate, driving motor under the one end fixedly connected with of motor plate down, be connected with the motor supporting seat on the fixed sleeve between motor plate and the lower driving motor down, be connected with transmission shaft one down on the driving motor, the one end that upwards stretches out of transmission shaft one rotationally connects on the motor supporting seat, remove a threaded connection on the transmission shaft one between motor supporting seat and lower motor plate, the motor supporting seat is in last driving motor's below, it is connected with the output shaft to go up the driving motor, be connected with transmission shaft two on the output shaft, adjust a threaded connection on transmission shaft two, the lower part of adjusting the seat can slide from top to bottom along fixed cover inner wall.

8. A height adjustable cable tray as claimed in claim 7, wherein: the outer side of the upper part of the fixed sleeve is connected with a supporting sleeve, the supporting sleeve is provided with a polygonal sliding groove, and the adjusting seat can slide up and down along the sliding groove.

9. A height adjustable cable tray as claimed in claim 7, wherein: the downside of drive block is equipped with the lifter, the lifter down in proper order from last adjust the seat, go up motor plate, motor supporting seat back and remove seat fixed connection vertically.

10. A height adjustable cable tray as claimed in claim 7, wherein: the inner wall of the adjusting frame is provided with a limiting assembly corresponding to the driving block, the limiting assembly is composed of two limiting steps arranged in the front-back direction at intervals, and the front side and the back side of the driving block are respectively attached to the two limiting steps.