Low-voltage cable repairing device

Abstract

The invention relates to the technical field of low-voltage cable repair, in particular to a low-voltage cable repair device which comprises a low-voltage cable, a cable calibration mechanism arranged outside the low-voltage cable, a lead pre-pressing mechanism arranged on the cable calibration mechanism and a core wire quick-mounting mechanism arranged in the lead pre-pressing mechanism. The cable calibration mechanism comprises a base and an anti-skid strap. Two groups of cable calibration mechanisms are arranged at a to-be-repaired part of a low-voltage cable in advance, two to-be-repaired ends of the low-voltage cable are fixed to ensure that a low-voltage core wire in the low-voltage cable is calibrated and constrained, and a lead wire pre-pressing mechanism is matched to apply pressure to two groups of chucks arranged on two sides of a switching core and the low-voltage core wire; and finally, the pressed chuck can quickly fix the low-voltage core wire and the adapter core, so that the interference of the core wires in other cables on the repair of the damaged wire body is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage cable repair, and specifically to a low-voltage cable repair device. Background Art

[0002] A cable is a conductor covered with an insulating layer, a protective layer, a shielding layer, etc. for transmitting electric power or signal current and signal voltage. It can be divided into high-voltage cables and low-voltage cables according to voltage.

[0003] Compared with low-voltage overhead lines and low-voltage overhead insulated lines, although the cost of low-voltage cable lines is higher and laying and maintenance are more difficult, due to its characteristics of being less affected by the outside world, it is widely used in low-voltage distribution systems.

[0004] At present, when the internal core wire of a low-voltage cable is mechanically damaged due to external factors during actual use, workers need to repair the damaged core wire. However, the existing repair method mainly involves peeling off the insulating layer of the damaged core wire, twisting the broken core wires together, and finally fixing them with insulating tape. However, this method has certain drawbacks. Since the internal core wires of the low-voltage cable are in a taut state under pressure after being straightened, it is difficult for the insulating tape to wrap around the damaged core wire in a circular manner. At the same time, the length of the core wire will change after fixing. Once the subsequent cable is pressed and straightened, the unevenly long joint parts will be over-pressed and fall off, which may cause power accidents in severe cases.

[0005] In view of this, a low-voltage cable repair device is designed to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] For this purpose, the technical solution adopted by the present invention is as follows: A low-voltage cable repair device comprises a low-voltage cable, a cable calibration mechanism arranged outside the low-voltage cable, a lead pre-stressing mechanism arranged on the cable calibration mechanism, and a core wire quick-installation mechanism arranged inside the lead pre-stressing mechanism; the cable calibration mechanism comprises a base and an anti-slip belt, a reinforcing pad arranged on the inner side of the base, a track arranged at the inner end of the reinforcing pad, and two positioning bolts arranged at the bottom of the track, and the anti-slip belt and the base are used to fix the part of the low-voltage cable to be repaired; the lead pre-stressing mechanism comprises a slide seat movably mounted on the outside of the track, a first pad arranged inside the slide seat, a first pressure pad arranged inside the first pad, a second pad movably mounted in the slide seat and located directly above the second pressure pad, a second pressure pad arranged at the bottom of the second pad, and a pressing pad installed on the top of the second pad; the core wire quick-installation mechanism comprises a low-voltage core wire located in the low-voltage cable, a sheath and a transfer core arranged between the first pressure pad and the second pressure pad, and four clamps arranged at both ends of the sheath.

[0008] In a preferred example, the present invention can be further configured as follows: the lead pre-stressing mechanism also includes a slider installed in the slot hole at the bottom end of the slide, a limit plate movably installed inside the slide, a bracket installed at the outer end of the limit plate, a locking bolt arranged at the top end of the bracket, a traction member movably installed at the bottom end of the bracket, a bracket movably installed at the other end of the traction member, a screw rod movably installed inside the bracket, and a support plate arranged on the threaded segment of the screw rod.

[0009] In a preferred example, the present invention can be further configured as follows: the cable calibration mechanism further includes a first shaft and three second shafts installed in the base, and one end of the anti-slip band is fixed to the outside of the first shaft, and the other end of the anti-slip band is tightened on the three second shafts; The cable calibration mechanism also includes a limiting rod fixedly mounted on the inner end of the reinforcing pad and penetrating into the track, a first spring arranged outside the limiting rod, and a stud mounted in a screw hole at the bottom of the reinforcing pad.

[0010] In a preferred example, the present invention can be further configured as follows: the core wire quick-installation mechanism also includes a positioning column installed inside the chuck, two anti-dropout clamps movably installed in two grooves at the inner end of the positioning column, and a third spring connected between the positioning column and the anti-dropout clamp; The inner end of the positioning column is in a conical structure, and the inner wall of the chuck is provided with a plurality of uniformly distributed pressure-boosting pads.

[0011] In a preferred example, the present invention can be further configured as follows: the base is composed of a U-shaped slide rail and a semicircular sleeve, and a fan-shaped end plate is provided on the outer side of the semicircular sleeve, and a transverse groove adapted to the stud is opened at the bottom of the U-shaped slide rail.

[0012] In a preferred example, the present invention may be further configured as follows: a side of the anti-slip strap facing the low-voltage cable is provided with an anti-slip rubber coating.

[0013] In a preferred example, the present invention can be further configured as follows: a slideway is provided on the top of the track, and the slider is adapted to penetrate into the inside of the track, and the limit rod is adapted to penetrate into the slider; One end of the first spring away from the reinforcing pad is adapted to bear pressure on the sliding block.

[0014] In a preferred example, the present invention can be further configured as follows: a through hole is opened in the middle of the slide seat, and an end of the traction member away from the bracket is adapted to pass through the through hole.

[0015] In a preferred example, the present invention can be further configured as follows: the first pressure pad and the second pressure pad are both made of thickened rubber material, and the center line of the hole formed by the first pressure pad and the second pressure pad after closing is symmetrical to the center line of the hole at the top of the bracket.

[0016] In a preferred example, the present invention can be further configured as follows: the lead pre-compression mechanism also includes a second spring arranged on the top of the second cushion, and the second spring is used to provide pre-compression protection for the initially placed sheath.

[0017] By adopting the above technical solution, the beneficial effects achieved by the present invention are: 1. The present invention pre-arranges two sets of cable calibration mechanisms at the position to be repaired of the low-voltage cable, and fixes the two ends of the low-voltage cable to be repaired to ensure that the internal low-voltage core wire is calibrated and constrained, and cooperates with the lead wire pre-pressing mechanism to apply pressure to the two sets of clamps arranged on both sides of the adapter core and the low-voltage core wire. Finally, the clamps under pressure can quickly fix the low-voltage core wire and the adapter core, thereby avoiding interference of the remaining core wires inside the cable with the repair of the damaged wire body.

[0018] 2. The present invention arranges an independent sheath and a transition core between the two damaged low-voltage core wires. When a certain distance difference appears between the two low-voltage core wires due to truncation, the sheath and the transition core can be used as a conductive path for the two low-voltage core wires. At this time, the repaired low-voltage core wire can avoid the problem of secondary falling off after the cable is straightened.

[0019] 3. The present invention straightens and stretches the wire ends of the two damaged low-voltage core wires through a lead pre-stressing mechanism. At this time, the two low-voltage core wires can simulate the state of the cable being compressed and straightened. In this state, the sheath and the adapter core are docked and repaired with the two straightened low-voltage core wires, so that the compressive strength of the repaired part against external forces can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the present invention when used; Figure 2 Schematic three - dimensional view of the present invention; Figure 3 Schematic view of the quick - installation mechanism for the core wire of the present invention; Figure 4 For the present invention Figure 3 Partial schematic view; Figure 5 For the present invention Figure 4 Enlarged schematic view at position A in the present invention; Figure 6 Schematic view of the cable calibration mechanism of the present invention; Figure 7 Exploded schematic view of the cable calibration mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic view at position B in the present invention; Figure 9 Schematic view of the lead pre - pressing mechanism of the present invention; Figure 10 For the present invention Figure 9 Exploded schematic view; Figure 11 For the present invention Figure 10 Enlarged schematic view at position C in the present invention.

[0021] Reference numerals: 100, low - voltage cable; 200, cable calibration mechanism; 210, base; 220, first shaft rod; 230, second shaft rod; 240, anti - slip strap; 250, reinforcing pad; 2501, limiting rod; 2502, first spring; 260, track; 270, stud; 280, positioning bolt; 300, lead pre - pressing mechanism; 310, sliding seat; 3101, slider; 3102, first cushion; 3103, first bearing pad; 3104, second cushion; 3105, second bearing pad; 3106, second spring; 3107, pressing pad; 320, limiting plate; 330, bracket; 340, locking bolt; 350, traction member; 360, bracket; 370, lead screw; 380, support plate; 400, quick - installation mechanism for core wire; 410, low - voltage core wire; 420, sheath; 430, adapter core; 440, chuck; 450, pressurizing pad; 460, positioning post; 470, anti - detachment card; 480, third spring. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention.

[0024] The following describes a low-voltage cable repair device provided by some embodiments of the present invention in conjunction with the accompanying drawings. Embodiment 1:

[0025] Combined with Figures 1 to 11 As shown, a low-voltage cable repair device provided by the present invention includes a low-voltage cable 100, a cable calibration mechanism 200 arranged outside the low-voltage cable 100, a lead pre-pressing mechanism 300 arranged on the cable calibration mechanism 200, and a core wire quick-installation mechanism 400 arranged inside the lead pre-pressing mechanism 300; The cable calibration mechanism 200 includes a base 210 and an anti-slip strap 240, a reinforcing pad 250 arranged inside the base 210, a track 260 arranged at the inner end of the reinforcing pad 250, and two positioning bolts 280 arranged at the bottom of the track 260, and the anti-slip strap 240 and the base 210 are used to fix the part of the low-voltage cable 100 to be repaired; The lead pre-pressing mechanism 300 includes a sliding seat 310 movably installed outside the track 260, a first cushion 3102 arranged inside the sliding seat 310, a first pressure-bearing pad 3103 arranged inside the first cushion 3102, a second cushion 3104 movably installed inside the sliding seat 310 and directly above the second pressure-bearing pad 3105, a second pressure-bearing pad 3105 arranged at the bottom of the second cushion 3104, and a pressing pad 3107 installed at the top of the second cushion 3104; The core wire quick-installation mechanism 400 includes a low-voltage core wire 410 located inside the low-voltage cable 100, a sheath 420 and an adapter core 430 arranged between the first pressure-bearing pad 3103 and the second pressure-bearing pad 3105, four chucks 440 arranged at both ends of the sheath 420, positioning posts 460 installed inside the chucks 440, two anti-detachment cards 470 movably installed in two grooves at the inner ends of the positioning posts 460, and a third spring 480 connected between the positioning posts 460 and the anti-detachment cards 470; The inner end of the positioning post 460 is in a conical structure, and the inner wall of the chuck 440 is provided with a plurality of evenly distributed pressure-increasing pads 450.

[0026] When it is necessary to repair the damaged low-voltage core wire 410 in the low-voltage cable 100, the cover on the top of the slide 310 is removed in advance, and then the removed cover is detached from the inside of the slide 310 together with the second cushion 3104 and the second pressure pad 3105, and then the inner end of the low-voltage core wire 410 is inserted into the inside of the bracket 330. After the adjacent ends of the two low-voltage core wires 410 are aligned, the sheath 420 and the transition core 430 can be placed on the inner side of the two first pressure pads 3103, and then the second cushion 3104 and the cover are re-placed. The inside of the slide 310 is then pressed with the pressing pad 3107. As the pressing pad 3107 is continuously pressed downward, the squeezed second cushion 3104 and the second pressure pad 3105 can fix the two adjacent chucks 440 toward the sheath 420. Finally, the two positioning columns 460 will penetrate into the interior of the sheath 420, and the two anti-slip clips 470 arranged in the positioning columns 460 will provide anti-slip protection for the inner wall of the sheath 420. The quickly repaired sheath 420 and the adapter core 430 can provide an effective conductive path for both ends of the low-voltage core wire 410. Embodiment 2:

[0027] Combination Figures 2 to 9 As shown, on the basis of Example 1, the cable calibration mechanism 200 further includes a first shaft 220 and three second shafts 230 installed in the base 210, one end of the anti-skid belt 240 is fixed to the outside of the first shaft 220, and the other end of the anti-skid belt 240 is tightened on the three second shafts 230, a limit rod 2501 fixedly installed at the inner end of the reinforcing pad 250 and penetrating into the inside of the track 260, a first spring 2502 arranged outside the limit rod 2501 and a stud 270 installed in the screw hole at the bottom of the reinforcing pad 250; The base 210 is composed of a U-shaped slide rail and a semicircular ferrule, and a fan-shaped end plate is arranged on the outer side of the semicircular ferrule, and a transverse groove adapted to the stud 270 is opened at the bottom of the U-shaped slide rail; The side of the anti-skid strap 240 facing the low-voltage cable 100 is provided with an anti-skid rubber coating; A slideway is provided at the top of the track 260, and the slider 3101 is adapted to penetrate into the inside of the track 260, and the limit rod 2501 is adapted to penetrate into the slider 3101; One end of the first spring 2502 away from the reinforcing pad 250 is adapted to bear pressure on the sliding block 3101 .

[0028] Preferably, the base 210 is adjusted to move horizontally outside the reinforcing pad 250 according to the position of the damaged low-voltage core wire 410 in the low-voltage cable 100 until the sliding seat 310 arranged outside the track 260 carries the horizontally arranged sheath 420 to provide guidance and support for the damaged low-voltage core wire 410. One damaged low-voltage core wire 410 in the low-voltage cable 100 can be picked out by two sliding seats 310. At this time, the two groups of bases 210 and the low-voltage cable 100 tightened by the anti-slip straps 240 can maintain sufficient compressive support during repair. After the two damaged low-voltage core wires 410 are horizontally pulled by the two brackets 330, they can be in a state simulating being straightened under pressure. After the two low-voltage core wires 410 repaired through this process are docked with the adapter core 430, they can prevent falling off under pressure. Embodiment 3:

[0029] Combined with Figures 6 to 11 As shown, on the basis of Embodiment 1, the lead preloading mechanism 300 further includes a slider 3101 installed in the slot at the bottom end of the sliding seat 310, a limiting plate 320 movably installed inside the sliding seat 310, a bracket 330 installed at the outer end of the limiting plate 320, a locking bolt 340 arranged at the top end of the bracket 330, a traction member 350 movably installed at the bottom end of the bracket 330, a bracket 360 movably installed at the other end of the traction member 350, a lead screw 370 movably installed inside the bracket 360, and a support plate 380 arranged on the threaded section of the lead screw 370; A through hole is formed in the middle of the sliding seat 310, and one end of the traction member 350 away from the bracket 330 is adaptively penetrated into the through hole; Both the first pressure-bearing pad 3103 and the second pressure-bearing pad 3105 are made of thickened rubber material, and the center line of the hole formed after the first pressure-bearing pad 3103 and the second pressure-bearing pad 3105 are closed is symmetrical with the center line of the hole at the top end of the bracket 330; The lead preloading mechanism 300 further includes a second spring 3106 arranged on the top of the second pad member 3104, and the second spring 3106 is used to provide preloading protection for the initially placed sheath 420.

[0030] When the hexagonal end at the bottom of the lead screw 370 rotates forward, the support plates 380 installed at the bottoms of the two tracks 260 will provide a support platform for the lifting of the lead screw 370. As the lead screw 370 rotates forward and descends, the bracket 360 movably installed at the top end of the lead screw 370 will contract towards the two tracks 260. Finally, the two traction members 350 movably installed at both ends of the bracket 360 will be compressed and contract, and the bracket 330 connected to the top end of the traction member 350 will push the inner end of the low-voltage core wire 410 towards the first pressure-bearing pad 3103 and the second pressure-bearing pad 3105, so that the end of the damaged low-voltage core wire 410 can be kept stable during repair.

[0031] Working principle and usage process of the present invention: First, take out one end of the anti-slip strap 240 from the gaps between the three second shaft rods 230, then take out another anti-slip strap 240, and then wind the two anti-slip straps 240 around the adjacent ends of the two low-voltage cables 100 until the anti-slip strap 240 locks the inner ends of the low-voltage cables 100 and is re-wound and fixed on the three second shaft rods 230. Then loosen the two studs 270, and then adjust the two bases 210 to move horizontally along the two strengthening pads 250 until the adjacent ends of the two low-voltage cables 100 are calibrated and adjusted along the same center line. When the adjacent ends of the two low-voltage cables 100 are symmetric, the two studs 270 can be tightened; Then penetrate the damaged and exposed end of the low-voltage core wire 410 into the bracket 330 until the exposed wire head of the low-voltage core wire 410 faces the first pressure pad 3103 and the second pressure pad 3105. Then adjust the two pressing pads 3107 to lift upwards until a large enough gap is formed between the second pressure pad 3105 and the first pressure pad 3103, and place the two ends of the sheath 420 inside the two first pressure pads 3103. Then press the pressing pads 3107 again. As the second pressure pad 3105 continues to descend, the two chucks 440 and the two positioning posts 460 pressed by the first pressure pad 3103 will adaptively press the two ends of the sheath 420. After the inner ends of the two positioning posts 460 penetrate into the inside of the sheath 420, the two anti-detachment members 470 pressed by the two third springs 480 can provide anti-detachment protection for the inner wall of the sheath 420. When the adjacent ends of the two low-voltage core wires 410 are fixed by the adapter core 430 and the two groups of chucks 440, the cover on the top of the slide seat 310 can be taken out, then loosen the two anti-slip straps 240, and then take out the second cushion member 3104 and the second pressure pad 3105 as a whole, and the slide seat 310 and the first cushion member 3102 can be pulled out from directly below the sheath 420; At this time, the damaged ends of the two low-voltage core wires 410 can be quickly repaired. According to the above operations, when the other core wires in the low-voltage cable 100 are damaged and need to be repaired, this device can be used to separately pick out the damaged core wires, so as to avoid interference from the other core wires to the repair of the damaged core wires.

[0032] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low-voltage cable repair device, comprising a low-voltage cable (100), characterized in that, It also includes a cable calibration mechanism (200) arranged outside the low-voltage cable (100), a lead wire pre-pressing mechanism (300) arranged on the cable calibration mechanism (200), and a core wire quick-installation mechanism (400) arranged inside the lead wire pre-pressing mechanism (300); The cable calibration mechanism (200) comprises a base (210) and an anti-skid belt (240), a reinforcing pad (250) arranged on the inner side of the base (210), a track (260) arranged at the inner end of the reinforcing pad (250), and two positioning bolts (280) arranged at the bottom of the track (260), and the anti-skid belt (240) and the base (210) are used to fix the part of the low-voltage cable (100) to be repaired; The lead pre-pressing mechanism (300) comprises a slide seat (310) movably mounted outside the track (260), a first cushion member (3102) arranged inside the slide seat (310), a first pressure pad (3103) arranged inside the first cushion member (3102), a second cushion member (3104) movably mounted inside the slide seat (310) and located directly above the second pressure pad (3105), a second pressure pad (3105) arranged at the bottom of the second cushion member (3104), and a pressing pad (3107) mounted on the top of the second cushion member (3104); The core wire quick-installation mechanism (400) comprises a low-voltage core wire (410) located in a low-voltage cable (100), a sheath (420) and a transition core (430) arranged between a first pressure-bearing pad (3103) and a second pressure-bearing pad (3105), and four clamps (440) arranged at both ends of the sheath (420).

2. The low-voltage cable repair device according to claim 1, characterized in that, The lead wire preloading mechanism (300) further comprises a slider (3101) mounted in a slot at the bottom end of the slide seat (310), a limit plate (320) movably mounted inside the slide seat (310), a bracket (330) mounted at the outer end of the limit plate (320), a locking bolt (340) arranged at the top end of the bracket (330), a traction member (350) movably mounted at the bottom end of the bracket (330), a bracket (360) movably mounted at the other end of the traction member (350), a screw rod (370) movably mounted inside the bracket (360), and a bracket (380) arranged on the threaded section of the screw rod (370).

3. A low-voltage cable repair device according to claim 1, characterized in that The cable calibration mechanism (200) further comprises a first shaft (220) and three second shafts (230) installed in the base (210), one end of the anti-slip belt (240) is fixed to the outside of the first shaft (220), and the other end of the anti-slip belt (240) is tightened on the three second shafts (230); The cable calibration mechanism (200) further comprises a limit rod (2501) fixedly mounted on the inner end of the reinforcing pad (250) and extending into the interior of the track (260), a first spring (2502) arranged outside the limit rod (2501), and a stud (270) mounted in a screw hole at the bottom of the reinforcing pad (250).

4. A low-voltage cable repair device according to claim 1, characterized in that, The core wire quick installation mechanism (400) further includes a positioning post (460) installed inside the chuck (440), two anti - detachment fasteners (470) movably installed in two grooves at the inner end of the positioning post (460), and a third spring (480) connected between the positioning post (460) and the anti - detachment fastener (470); The inner end of the positioning post (460) is of a conical structure, and a plurality of evenly distributed pressure - increasing pads (450) are arranged on the inner wall of the chuck (440).

5. A low-voltage cable repair device according to claim 1, characterized in that, The base (210) is composed of a U - shaped slide rail and a semi - circular clamping sleeve. A fan - shaped end plate is arranged on the outer side of the semi - circular clamping sleeve, and a transverse groove adapted to the stud (270) is opened at the bottom of the U - shaped slide rail.

6. The low-voltage cable repair device according to claim 1, wherein, The side of the anti - slip belt (240) facing the low - voltage cable (100) is provided with an anti - slip rubber coating.

7. The low-voltage cable repair device according to claim 3, characterized in that, A slideway is opened at the top of the track (260), and the slider (3101) is adapted to penetrate through to the inside of the track (260), while the limit rod (2501) is adapted to penetrate through the slider (3101); One end of the first spring (2502) away from the strengthening pad (250) is adapted to bear pressure on the slider (3101).

8. A low-voltage cable repair device according to claim 1, wherein, A through - hole is opened in the middle of the sliding seat (310), and one end of the traction member (350) away from the bracket (330) is adapted to penetrate through to the through - hole.

9. The low-voltage cable repair device according to claim 1, characterized in that, Both the first pressure - bearing pad (3103) and the second pressure - bearing pad (3105) are made of thickened rubber material, and the center line of the hole formed after the first pressure - bearing pad (3103) and the second pressure - bearing pad (3105) are closed is symmetrical with the center line of the hole at the top end of the bracket (330).

10. A low-voltage cable repair device according to claim 1, characterized in that, The lead pre - pressing mechanism (300) further includes a second spring (3106) arranged on the top of the second pad (3104), and the second spring (3106) is used to provide pre - pressing protection for the initially placed sheath (420).

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