CN214647710U

CN214647710U - Special cable sheath protection device for 27.5kV railway

Info

Publication number: CN214647710U
Application number: CN202120920822.7U
Authority: CN
Inventors: 谢勇
Original assignee: Wuhan Changyuan Tianwei Power Equipment Manufacturing Co ltd
Current assignee: Wuhan Changyuan Tianwei Power Equipment Manufacturing Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-11-09
Anticipated expiration: 2031-04-29

Abstract

The utility model provides a special cable sheath protection device of 27.5kV railway. This special cable sheath protection device of 27.5kV railway includes: one side of the explosion-proof bridge is rotatably connected with a closing cover; explosion-proof mechanism is including the knob, the first conical gear of one end fixedly connected with of knob, the outside meshing of first conical gear is connected with second conical gear, the inner circle fixedly connected with threaded rod of second conical gear, the outside threaded connection of threaded rod has the screw thread piece, the bottom fixedly connected with latch of screw thread piece, the bottom fixedly connected with tow bar of explosion-proof crane span structure for close the lid and carry out the joint with explosion-proof crane span structure, make high tension cable keep apart with the external world, the equal fixedly connected with bracing piece in both sides at tow bar top, the inside of explosion-proof crane span structure is provided with the cable armor. The utility model provides a special cable sheath protection device of 27.5kV railway has explosion-proof advantage.

Description

Special cable sheath protection device for 27.5kV railway

Technical Field

The utility model relates to a power transmission and distribution technical field especially relates to a special cable sheath protection device of 27.5kV railway.

Background

Electrified railway pulls net 27.5kV cable and national grid 35kV single core cable can produce high-voltage impact to cable copper shield layer and steel armour in operation, and then causes the harm to single core cable and cable terminal, and the cable sheath protector has the limit of bearing according to the design parameter, and when bearing excessive impact, the cable sheath protector explodes and splits or carbomorphism punctures.

Some current protector exist and can't carry out outside protection and isolation with the cable, because the cable joint installation is not in place, lead to the cable to generate heat for a long time, lead to cable joint insulation aging when full load or overload, finally arouse to ground discharge finally lead to the cable explosion and catch fire, and then influence the condition of other circuit faults in the cable pit.

Therefore, there is a need to provide a new 27.5kV railway sheath protection device to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a special cable sheath protection device of 27.5kV railway with explosion-proof function.

The utility model provides a special cable sheath protection device of 27.5kV railway includes: one side of the explosion-proof bridge is rotatably connected with a closing cover; the explosion-proof mechanism is including the knob, the first conical gear of one end fixedly connected with of knob, the outside meshing of first conical gear is connected with second conical gear, the inner circle fixedly connected with threaded rod of second conical gear, the outside threaded connection of threaded rod has the screw thread piece, the bottom fixedly connected with latch of screw thread piece, the bottom fixedly connected with tow bar of explosion-proof crane span structure, the equal fixedly connected with bracing piece in both sides at tow bar top, the inside of explosion-proof crane span structure is provided with the cable armor.

Preferably, the interior of the explosion-proof bridge frame is rotatably connected with a pulley, and one side of the pulley is provided with a heat dissipation hole.

Preferably, one side of the explosion-proof bridge frame is rotatably connected with a first fixing ring, one side of the first fixing ring is rotatably connected with a second fixing ring, the outer side of the second fixing ring is fixedly connected with a fixing block, and the fixing block is connected with a cable box through a cable.

Preferably, one side of the cable box is rotatably connected with a sealing door, and a placing cavity is formed in the cable box.

Preferably, the two sides of the inner wall of the placing cavity are fixedly connected with a first roller and a second roller respectively, and the outer sides of the first roller and the second roller are both connected with the outer side of the cable in a sliding manner.

Preferably, the inside fixedly connected with conductor splint of cable box, the inside fixedly connected with first sheath ware of conductor splint, one side fixedly connected with terminal of first sheath ware, the one end of terminal is provided with the earthing terminal.

Preferably, the outer side of the supporting rod is fixedly connected with a second sheath device, and the top of the supporting rod is fixedly connected with a fixing plate.

Compared with the prior art, the utility model provides a special cable sheath protection device of 27.5kV railway has following beneficial effect:

the utility model provides a 27.5kV railway special cable sheath protection device, drive first bevel gear through rotatory knob and rotate, and then drive second bevel gear and rotate, second bevel gear rotates and drives the threaded rod and rotate, the threaded rod drives the screw block and removes, the screw block drives the latch and removes, and then make to close and cover and carry out the joint with explosion-proof crane span structure, make high tension cable keep apart with the external world, cooperation cable armor, built-in louvre, the use of first sheath ware and second sheath ware, it can't carry out outside protection and isolation with the cable to have solved, because the cable joint installation is not in place, lead to the cable to generate heat for a long time, lead to cable joint insulating ageing when full load or overload, finally arouse and finally lead to cable explosion and fire to ground discharge, and then influence the problem of other circuit trouble in the cable pit.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the cable sheath protection device for 27.5kV railway according to the present invention;

FIG. 2 is a schematic structural view of the explosion-proof mechanism shown in FIG. 1;

FIG. 3 is a schematic structural view of the cable box of FIG. 1;

FIG. 4 is an enlarged view of the structure at A in FIG. 1;

fig. 5 is an enlarged schematic view of the structure at B in fig. 1.

Reference numbers in the figures: 1. an explosion-proof bridge frame; 2. closing the cover; 3. an explosion-proof mechanism; 31. a knob; 32. a first bevel gear; 33. a second bevel gear; 34. a threaded rod; 35. a thread block; 36. clamping teeth; 37. a tow bar; 38. a support bar; 4. cable armoring; 5. heat dissipation holes; 6. a pulley; 7. a first retaining ring; 8. a second retaining ring; 9. a fixed block; 10. a cable box; 11. a sealing door; 12. a placement chamber; 13. a first roller; 14. a second roller; 15. a conductor clamp plate; 16. a first passivation layer; 17. a binding post; 18. a ground terminal; 19. a second sheath device; 20. and (7) fixing the plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, in which fig. 1 is a schematic structural diagram of a preferred embodiment of a protective layer protection device for 27.5kV railway special cable sheath provided by the present invention; FIG. 2 is a schematic structural view of the explosion-proof mechanism shown in FIG. 1; FIG. 3 is a schematic structural view of the cable box of FIG. 1; FIG. 4 is an enlarged view of the structure at A in FIG. 1; fig. 5 is an enlarged schematic view of the structure at B in fig. 1. The special cable sheath protection device of 27.5kV railway includes: one side of the explosion-proof bridge frame 1 is rotatably connected with a closing cover 2.

In the specific implementation process, as shown in fig. 1 and fig. 2, the explosion-proof mechanism 3 and the explosion-proof mechanism 3 include a knob 31, a first bevel gear 32 is fixedly connected to one end of the knob 31, a second bevel gear 33 is engaged with the outer side of the first bevel gear 32, a threaded rod 34 is fixedly connected to the inner ring of the second bevel gear 33, a threaded block 35 is connected to the outer side of the threaded rod 34 through threads, a latch 36 is fixedly connected to the bottom of the threaded block 35, a tow bar 37 is fixedly connected to the bottom of the explosion-proof bridge 1, support bars 38 are fixedly connected to both sides of the top of the tow bar 37, and a cable armor 4 is fixedly connected to the inside of the explosion-proof bridge 1.

Referring to fig. 1 and 4, a pulley 6 is rotatably connected to the inside of the explosion-proof bridge 1, and a heat dissipation hole 5 is formed in one side of the pulley 6.

Referring to fig. 1 and 5, one side of the explosion-proof bridge frame 1 is rotatably connected with a first fixing ring 7, one side of the first fixing ring 7 is rotatably connected with a second fixing ring 8, the outer side of the second fixing ring 8 is fixedly connected with a fixing block 9, and the fixing block 9 is connected with a cable box 10 through a cable.

It should be noted that: through setting up pulley 6, be convenient for when needs removal cable armor 4, avoid the outside of cable armor 4 and explosion-proof crane span structure 1 to produce the condition that the friction caused the damage, through setting up the solid fixed ring of first solid fixed ring 7 and the solid fixed ring of second 8 for cable armor 4 can be fixed in explosion-proof crane span structure 1's inside, has improved the stability of cable.

Referring to fig. 1 and 3, a sealing door 11 is rotatably connected to one side of the cable box 10, and a placing cavity 12 is opened inside the cable box 10.

Referring to fig. 3, a first roller 13 and a second roller 14 are fixedly connected to two sides of the inner wall of the placing cavity 12, respectively, and the outer sides of the first roller 13 and the second roller 14 are slidably connected to the outer side of the cable.

Referring to fig. 3, a conductor clamping plate 15 is fixedly connected to the inside of the cable box 10, a first sheath 16 is fixedly connected to the inside of the conductor clamping plate 15, a terminal 17 is fixedly connected to one side of the first sheath 16, and a ground terminal 18 is provided at one end of the terminal 17.

Referring to fig. 1 and 2, the second sheath 19 is fixedly connected to the outer side of the supporting rod 38, and the fixing plate 20 is fixedly connected to the top of the supporting rod 38.

It should be noted that: through setting up sealing door 11 for the inside and the external world of cable box 10 keep apart, the explosion-proof of device has been improved, through setting up first gyro wheel 13 and second gyro wheel 14, make when adjusting the length of cable, the outside of cable can not worn and torn, lead to the cable to expose the condition that causes harm, use through the cooperation that sets up between first sheath ware 16 and the second sheath ware 19, avoid electromagnetic induction or equipment trouble, produce overvoltage, very easily puncture the condition of cable outer sheath, the metal sheath that is used for protecting the cable avoids the harm of various voltages.

The utility model provides a 27.5kV railway special cable sheath protection device's theory of operation as follows:

when the device is needed to be used, firstly, a cable penetrates through the cable armor 4, the closing cover 2 is closed, then the knob 31 is rotated, the knob 31 drives the first bevel gear 32 to rotate, the first bevel gear 32 drives the second bevel gear 33 to rotate, the second bevel gear 33 drives the threaded rod 34 to rotate, the threaded rod 34 drives the threaded block 35 to move, the threaded block 35 drives the latch 36 to move, the closing cover 2 is attached to and clamped with the explosion-proof bridge frame 1, then the first fixing ring 7 and the second fixing ring 8 are rotated, the first fixing ring 7 is attached to the second fixing ring 8, the bolt on the top of the first fixing ring 7 is screwed down to fix, the high-voltage single-core cable is clamped and fixed, when the device is needed to be fixed at a high place, the cable can be pulled to adjust the length of the cable, the cable in the placing cavity 12 slides out of the cable box 10 through the first roller 13 and the second roller 14 and extends, when the cable sheath has overvoltage, the resistance of the first sheath 16 and the second sheath 19 can be reduced, the current is increased, the electric charge on the cable armor 4 is released, the normal and safe operation of the cable is protected, and the condition that the cable fails and can not work normally is avoided.

the utility model provides a 27.5kV railway special cable sheath protection device, which drives a first bevel gear 32 to rotate through a rotary knob 31, thereby driving the second bevel gear 33 to rotate, the second bevel gear 33 rotates to drive the threaded rod 34 to rotate, the threaded rod 34 drives the threaded block 35 to move, the threaded block 35 drives the latch 36 to move, further, the close cover 2 is clamped with the explosion-proof bridge frame 1, so that the high-voltage cable is isolated from the outside, and the problem that the cable cannot be externally protected and isolated is solved by matching the use of the cable armor 4, the built-in heat dissipation holes 5, the first sheath 16 and the second sheath 19, due to the fact that the cable joint is not installed in place, the cable generates heat for a long time, insulation aging of the cable joint is caused when the cable joint is in full load or overload, and finally, the problem that the cable explodes and fires due to earth discharge, and further faults of other lines in a cable trench are affected is caused.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a special cable sheath protection device of 27.5kV railway which characterized in that includes:

one side of the explosion-proof bridge frame (1) is rotatably connected with a closing cover (2);

explosion-proof mechanism (3), explosion-proof mechanism (3) are including knob (31), the first conical gear of one end fixedly connected with (32) of knob (31), the outside meshing of first conical gear (32) is connected with second conical gear (33), inner circle fixedly connected with threaded rod (34) of second conical gear (33), the outside threaded connection of threaded rod (34) has screw block (35), the bottom fixedly connected with latch (36) of screw block (35), bottom fixedly connected with tow bar (37) of explosion-proof crane span structure (1), the equal fixedly connected with bracing piece (38) in both sides at tow bar (37) top, the inside of explosion-proof crane span structure (1) is provided with cable armor (4).

2. The cable sheath protection device for 27.5kV railways as claimed in claim 1, wherein a pulley (6) is rotatably connected to the interior of the explosion-proof bridge (1), and a heat dissipation hole (5) is formed in one side of the pulley (6).

3. The cable sheath protection device for the 27.5kV railway special cable sheath according to claim 1, wherein a first fixing ring (7) is rotatably connected to one side of the explosion-proof bridge (1), a second fixing ring (8) is rotatably connected to one side of the first fixing ring (7), a fixing block (9) is fixedly connected to the outer side of the second fixing ring (8), and the fixing block (9) is connected with a cable box (10) through a cable.

4. The protective layer protecting device for the cable sheath special for the 27.5kV railway according to claim 3, wherein a sealing door (11) is rotatably connected to one side of the cable box (10), and a placing cavity (12) is formed inside the cable box (10).

5. The cable sheath protection device for the 27.5kV railway special cable sheath according to claim 4, wherein a first roller (13) and a second roller (14) are fixedly connected to two sides of the inner wall of the placing cavity (12), and the outer sides of the first roller (13) and the second roller (14) are slidably connected with the outer side of the cable.

6. The 27.5kV railway special cable sheath protection device as claimed in claim 5, wherein a conductor clamp plate (15) is fixedly connected to the inside of the cable box (10), a first sheath device (16) is fixedly connected to the inside of the conductor clamp plate (15), a binding post (17) is fixedly connected to one side of the first sheath device (16), and one end of the binding post (17) is provided with a grounding terminal (18).

7. The cable sheath protection device for 27.5kV railways as claimed in claim 1, wherein a second sheath (19) is fixedly connected to the outer side of the supporting rod (38), and a fixing plate (20) is fixedly connected to the top of the supporting rod (38).