Liftable cable support convenient for cable laying and maintenance

Abstract

The invention relates to a liftable cable support convenient for cable laying and maintenance, which is characterized in that the liftable cable support comprises a stand column, a plurality of cross arms are fixed on the right side of the stand column, and a through rectangular through hole and a chute for installing a lifting mechanism are arranged above the cross arms; when the cable support is put into use, the lifting device and the transmission mechanism are matched with each other, a worker does not need to lift a cable down and up from the cable support, the rotating drum can rotate along with movement of the cable when the cable is pulled, and the rotating drum can rotate along with movement of the cable when the cable is pulled. When the device is put into use, the laying and maintenance work of the cable is time-saving and labor-saving, and the use safety of the cable is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable supports, in particular to a liftable cable support which is convenient for laying and repairing cables. Background Art

[0002] At present, the power transmission cable support only plays the role of fixing and combing the cable. During the laying process, the cable can only be laid and laid using the ground pulley. After completion, the cable is combed manually and then lifted and placed on the cable support for fixing. The traditional construction method causes serious wear on the cable sheath during the construction process. It is very laborious for manpower to lift the cable onto the support. Secondly, there is a multi-segment bending phenomenon when the cable is fixed on the support manually, which has a certain impact on the operation of the cable in the later stage. If a fault occurs in the middle joint of the cable during the operation and maintenance, the faulty section needs to be removed during the repair, and the reserved parts at both ends of the cable need to be stretched to make the joint docked and repaired again. When repairing, the cable fixed on the cable support is first loosened, and then the staff moves the cable to the ground and uses the ground pulley to stretch the cable. After the joint at the faulty end is docked and repaired, the staff also needs to re-place the cable on the cable support and fix it. The construction process of operation and maintenance is also likely to cause friction damage to the cable sheath, affecting the safe use of the cable, and the entire construction process is time-consuming and laborious. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a liftable cable bracket which is convenient for cable laying and maintenance, and is characterized in that it comprises a column, a plurality of cross arms are fixed to the right side of the column, a through rectangular through hole and a slide groove for installing a lifting mechanism are provided on the top of the cross arm, and a gear groove, a bearing positioning cavity and a transmission shaft positioning groove for installing a transmission mechanism are provided on the front side of the cross arm.

[0004] Furthermore, a bayonet is provided between the rectangular through hole and the slide groove, the two slide grooves are respectively located at the centers of the two sides of the shorter sides of the rectangular through hole, and the interior of the gear groove is communicated with the slide groove.

[0005] Furthermore, the lifting mechanism includes two lifting rods respectively inserted into two slide grooves, and a rack is provided on the lifting rod on the side located inside the gear groove and connected to the slide groove. An axle is connected to the upper part between the two lifting rods, and a rotating drum is rotatably connected to the outer surface of the axle, and the middle part of the rotating drum is a semi-arc recessed structure.

[0006] Furthermore, the transmission mechanism includes a transmission shaft installed in a transmission shaft positioning groove, the outer surface of the transmission shaft is sleeved with gears respectively located in two gear grooves, the gears and the racks are engaged with each other, and the outer surface of the transmission shaft is also fixedly sleeved with two bearings respectively, and the two bearings are respectively fixed in the bearing positioning cavity. After the transmission shaft extends out of the right side of the cross arm, a rotating wheel is provided at the tail end thereof, and a turning handle is provided on the side of the rotating wheel away from the cross arm.

[0007] Furthermore, positioning rods are respectively arranged on the right side of the cross arm and directly above and below the transmission shaft, and a positioning hole is arranged on the outer surface of the transmission shaft between the two positioning rods.

[0008] Furthermore, through holes are provided at the upper ends of the lifting rods and at positions parallel to the shaft rods in a one-to-one correspondence, and the through holes are used to install positioning screws.

[0009] Furthermore, a protective plate for covering the gear groove, the bearing positioning cavity and the transmission shaft positioning groove is provided on the front side of the cross arm, and a semi-arc positioning groove is provided on one side of the protective plate connected to the cross arm and at a position corresponding to the two bearing positioning cavities, and the semi-arc positioning groove cooperates with the bearing positioning cavity.

[0010] Furthermore, mounting holes are provided at the upper and lower parts of the side where the upright column is fixedly connected to the cross arm.

[0011] The beneficial effects of the present invention are: When the present invention is put into use, the lifting device and the transmission mechanism cooperate with each other, so that the staff does not need to lift the cable from the cable bracket to stretch the cable, and when the cable is pulled, the rotating drum will rotate with the movement of the cable, and will not cause wear and damage to the outer sheath of the cable. The use of the present invention saves time and effort in the laying and maintenance of the cable and improves the safety of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the present invention; Figure 2 It is a right side view of the present invention; Figure 3 A top view of the present invention; Figure 4 For the present invention Figure 1 A magnified image Figure 5 It is a front view of the cross arm of the present invention; Figure 6 For the present invention Figure 5 AA section view Figure 7 A top view of the cross arm of the present invention; Figure 8 This is a front view of the lifting mechanism of the present invention; Fig. 9 It is a schematic diagram of the meshing of the rack and the gear of the present invention; Fig.10 is a rear view of the protective plate of the present invention; Fig.11 It is a left side view of the protective plate of the present invention; In the figure: 1, column, 11, mounting hole; 2, cross arm, 21, rectangular through hole, 22, slide groove, 23, gear groove, 24, bearing positioning cavity, 25, transmission shaft positioning groove, 26, bayonet, 27, positioning rod; 3, lifting mechanism, 31, lifting rod, 311, through hole, 32, shaft rod, 33, rotating drum, 34, rack, 35, positioning screw; 4, transmission mechanism, 41, transmission shaft, 42, gear, 43, bearing, 44, rotating wheel, 45, turning handle, 46, positioning hole; 5, protective plate, 51, semi-arc positioning groove. DETAILED DESCRIPTION

[0013] Embodiment 1, as Figure 1-7 As shown, a liftable cable bracket which is convenient for cable laying and maintenance includes a column 1, and a plurality of cross arms 2 are fixed to the right side of the column 1. In this solution, three cross arms 2 are fixed to the right side of the column 1, and a through rectangular through hole 21 and a slide groove 22 for installing a lifting mechanism 3 are provided above the cross arm 2, and a gear groove 23, a bearing positioning cavity 24 and a transmission shaft positioning groove 25 for installing a transmission mechanism 4 are provided on the front side of the cross arm 2.

[0014] In this embodiment, a bayonet 26 is provided between the rectangular through hole 21 and the slide groove 22 to enable them to communicate. The two slide grooves 22 are respectively located at the centers of the two sides of the shorter side of the rectangular through hole 21, and the interior of the gear groove 23 is communicated with the slide groove 22; the lifting mechanism 3 includes two lifting rods 31 respectively inserted in the two slide grooves 22, and a rack 34 is provided on the lifting rod 31 at the side of the gear groove 23 that is communicated with the slide groove 22, and a stopper is provided at the lower end of the rack 34. The function of the stopper is to stop the lifting rod 31 when it is raised to a certain position. When the cable is mounted on the rotating drum 33 and pulled, the semi-arc-shaped recessed structure will limit the movement direction of the cable, so that the cable is always located in the semi-arc-shaped recessed structure.

[0015] In this embodiment, the transmission mechanism 4 includes a transmission shaft 41 installed in the transmission shaft positioning groove 25, and the outer surface of the transmission shaft 41 is sleeved with gears 42 respectively located in the two gear grooves 23, and the gears 42 and the racks 34 mesh with each other. When the transmission shaft 41 is rotated, the gears 42 are driven to rotate, and the rotation of the gears 42 causes the racks 34 meshed therewith to move up and down, thereby causing the lifting rod 31 to rise or fall; the outer surface of the transmission shaft 41 is also fixedly sleeved with two bearings 43, and the two bearings 43 are respectively fixed in the bearing positioning cavity 24. When the transmission shaft 41 is rotated, the two bearings 43 in this scheme are deep groove ball bearings, which are used to make the transmission shaft 41 rotate more smoothly, and the bearings 43 are fixed in the bearing positioning cavity 24 and also play a positioning role; after the transmission shaft 41 extends out of the right side of the cross arm 2, a rotating wheel 44 is provided at its tail end, and a turning handle 45 is provided on the side of the rotating wheel 44 away from the cross arm 2; the cooperation of the rotating wheel 44 and the turning handle 45 makes it easier to rotate the transmission shaft 41.

[0016] In this embodiment, positioning rods 27 are respectively provided on the right side of the cross arm 2 and directly above and below the transmission shaft 41. A positioning hole 46 is provided on the outer surface of the transmission shaft 41 between the two positioning rods 27. When the transmission shaft 41 is rotated to raise or lower the lifting rod 31 to a certain height, a pin rod is pinned into the positioning hole 46, and the two ends of the pin rod respectively abut against the sides of the two positioning rods 27, thereby achieving the purpose of limiting the lifting or lowering of the lifting rod 31.

[0017] In this embodiment, a plurality of through holes 311 are provided at the upper end of the lifting rod 31 and in a position parallel to the shaft rod 32, and the through holes 311 are used to install the positioning screws 35. The through holes 311 of the two lifting rods 31 are arranged equidistantly from top to bottom and correspond to each other. The purpose of this design is that when the installed cable is installed in place, the lifting rod 31 is lowered to lower the rotating drum 33 into the rectangular through hole 21, and the cable originally pressed on the rotating drum 33 is further directly supported on the upper surface of the cross arm 2. After a pin is inserted into the positioning hole 46 to limit the lifting rod 31 from rising or falling, the positioning screw 35 is installed in the through hole 311 at an appropriate position according to the wire diameter of the cable to fix the cable.

[0018] In this embodiment, a protective plate 5 for covering the gear groove 23, the bearing positioning cavity 24 and the transmission shaft positioning groove 25 is provided on the front side of the cross arm 2. A semi-arc positioning groove 51 is provided on one side of the protective plate 5 connected to the cross arm 2 and at a position corresponding to the two bearing positioning cavities 24. The semi-arc positioning groove 51 cooperates with the bearing positioning cavity 24. The function of the protective plate 5 is to protect the transmission device 1 installed in the gear groove 23, the bearing positioning cavity 24 and the transmission shaft positioning groove 25, and the function of the semi-arc positioning groove 51 is to further fix the bearing 43 fixed in the bearing positioning cavity 24.

[0019] In this embodiment, mounting holes 11 are provided at the upper and lower parts of a side surface where the column 1 is fixedly connected to the cross arm 2. The mounting holes 11 are used to fix the column 1 to the side wall of the cable tunnel or cable trench by expansion screws.

[0020] The method of using the present invention is divided into two types: 1. When laying cables, install the liftable cable supports one by one on the side wall of the cable trench or tunnel according to the design requirements, and then adjust the transmission device of each liftable cable support in turn so that the rotating drum in the lifting device is higher than a certain height of the cross arm surface, and insert a pin rod into the positioning hole to prevent the rotating drum from falling with the lifting rod when it is stressed. The cable is erected in the semi-arc recessed structure of the rotating drum of the first cable support, and the cable is dragged. The cable will move with the rotation of the rotating drum. When the cable reaches the rotating drum of the next cable support, the cable is erected in the semi-arc recessed structure of the rotating drum of the cable support in the same way, and the cable is continued to be dragged. Repeat the above operation until the cable laying is completed, and finally pull out the pin rod in the positioning hole in turn to lower the rotating drum so that the cable is directly supported on the cross arm, and the pin rod is pinned into the positioning hole again to limit the lifting and lowering of the lifting rod. Finally, according to the wire diameter of the cable, the positioning screw is installed in the through hole at the appropriate position to fix the cable to complete the cable laying work.

[0021] 2. During cable inspection and repair, if a faulty cable is found, remove the positioning screws used to fix the cables on each lifting mechanism of the cable layer in turn, and remove the pin rod inserted into the positioning hole at the same time, turn the handle to make the transmission shaft drive the gear to rotate, and the gear rotation causes the rack meshing with it to rise, and at the same time lift the drum, and after the drum lifts the cable to a certain height from the upper surface of the cross arm, insert the pin rod into the positioning hole for limiting; cut off the faulty head of the cable, because reserved cables are reserved when laying the cables, when the two cable heads are dragged separately, the two cable heads will close to the middle, and after the two cable heads are connected and fixed, pull out the pin rods in the positioning holes in turn to lower the drum, so that the cable is directly supported on the cross arm, and insert the pin rod into the positioning hole again to limit the lifting of the lifting rod, and finally install the positioning screw in the through hole to fix the cable, and complete the inspection and repair of the fixed cable.

[0022] When laying and repairing the above-mentioned cables, workers do not need to lift the cables up and down from the cable bracket to stretch the cables, and when pulling the cables, the drum will rotate with the movement of the cables, and will not cause wear and damage to the outer sheath of the cables. The use of the present invention saves time and effort in laying and repairing cables, and improves the safety of cable use.

[0023] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. 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 liftable cable support for easy cable laying and maintenance, characterized in that: The invention comprises a column (1), a plurality of cross arms (2) being fixed on the right side of the column (1), a through rectangular through hole (21) and a slide groove (22) for installing a lifting mechanism (3) being provided on the top of the cross arm (2), and a gear groove (23), a bearing positioning cavity (24) and a transmission shaft positioning groove (25) for installing a transmission mechanism (4) being provided on the front side of the cross arm (2).

2. The liftable cable support for facilitating cable laying and maintenance according to claim 1 is characterized in that: A bayonet (26) is provided between the rectangular through hole (21) and the slide groove (22), the two slide grooves (22) are respectively located at the centers of two sides of the shorter side of the rectangular through hole (21), and the interior of the gear groove (23) is in communication with the slide groove (22).

3. The liftable cable support for facilitating cable laying and maintenance according to claim 2 is characterized in that: The lifting mechanism (3) comprises two lifting rods (31) respectively inserted into two slide grooves (22); a rack (34) is provided on the lifting rod (31) at a side located inside the gear groove (23) and communicating with the slide groove (22); a shaft (32) is connected to the upper part between the two lifting rods (31); a rotating drum (33) is sleeved on the outer surface of the shaft (32); and the middle part of the rotating drum (33) is a semi-arc-shaped recessed structure.

4. The liftable cable support for facilitating cable laying and maintenance according to claim 3 is characterized in that: The transmission mechanism (4) comprises a transmission shaft (41) installed in the transmission shaft positioning groove (25); the outer surface of the transmission shaft (41) is sleeved with gears (42) respectively located in the two gear grooves (23); the gears (42) and the rack (34) are meshed with each other; the outer surface of the transmission shaft (41) is also respectively sleeved with two bearings (43); the two bearings (43) are respectively fixed in the bearing positioning cavity (24); the transmission shaft (41) extends out of the right side of the cross arm (2) and a rotating wheel (44) is provided at its rear end; and a rotating handle (45) is provided on the side of the rotating wheel (44) away from the cross arm (2).

5. The liftable cable support for facilitating cable laying and maintenance according to claim 4 is characterized in that: Positioning rods (27) are respectively arranged on the right side of the cross arm (2) and directly above and directly below the transmission shaft (41), and a positioning hole (46) is arranged on the outer surface of the transmission shaft (41) between the two positioning rods (27).

6. The liftable cable support for facilitating cable laying and maintenance according to claim 5 is characterized in that: Through holes (311) are provided at the upper ends of the lifting rods (31) and at positions parallel to the shaft rods (32) in a one-to-one correspondence, and the through holes (311) are used to install positioning screws (35).

7. The liftable cable support for facilitating cable laying and maintenance according to claim 6 is characterized in that: The front side of the cross arm (2) is provided with a protective plate (5) for covering the gear groove (23), the bearing locating cavity (24) and the transmission shaft locating groove (25); a semi-arc locating groove (51) is provided at a position corresponding to the two bearing locating cavities (24) on one side of the protective plate (5) connected to the cross arm (2); the semi-arc locating groove (51) cooperates with the bearing locating cavity (24).

8. The liftable cable support for facilitating cable laying and maintenance according to claim 1 is characterized in that: Mounting holes (11) are provided at the upper and lower parts of a side surface where the upright column (1) and the cross arm (2) are fixedly connected.

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