A high voltage power cable

Abstract

The present invention belongs to the field of cable technology, especially a high-voltage power cable, and the following scheme is proposed, including a cable body, the cable body is composed of a wire core, a shielding sleeve, an insulating sleeve, a heat-insulating sleeve and a protective sleeve, and a plurality of support plates are arranged between the outer wall of the wire core and the inner wall of the shielding sleeve, the cross-section of the support plate is wavy, the support plate is made of elastic insulating material, the gap between the wire core and the shielding sleeve is filled with insulating cotton, the outer wall of the shielding sleeve is bonded to the inner wall of the insulating sleeve, the inner wall of the heat-insulating sleeve and the insulating sleeve are filled with pressure-resistant cotton, the outer wall of the heat-insulating sleeve is bonded to the inner wall of the protective sleeve, and the outer wall of the protective sleeve is provided with a plurality of anti-skid grooves. In the present invention, the friction between the ground and the cable can be reduced by the ball bearing, so as to facilitate the protection of the cable and prevent the cable skin from being damaged due to the friction between the cable and the ground during the dragging process.

Description

Technical Field

[0001] The present invention relates to the field of cables, and in particular to a high-voltage power cable. Background Art

[0002] Insulated high-voltage power cable is an auxiliary device used for power transmission and distribution during the use of high-voltage power. It has been widely used in the field of high-voltage power technology.

[0003] After searching, the Chinese patent application with application publication number CN214379873U discloses a high-voltage power cable sheath pipe protection device, which belongs to the field of power cables. A high-voltage power cable sheath pipe protection device includes a sleeve A, a sleeve is provided at the right end of the sleeve A, a sleeve B is provided inside the sleeve, a connecting sleeve A is provided on the upper side of the sleeve, the bottom surface of the connecting sleeve A is a front-to-back symmetrical structure with two sealing strips A embedded therein, the inner side of the sealing strip A is a left-right symmetrical structure with two positioning blocks fixed therein, a movable groove is provided on the outer wall of the positioning block, a clamping block is provided in the movable groove, a connecting sleeve B is provided on the lower side of the connecting sleeve A, the top surface of the connecting sleeve B is a front-to-back symmetrical structure with two sealing clamping grooves, the inner side of the sealing clamping groove is a left-right symmetrical structure with two clamping block grooves, a top screw groove is provided inside the connecting sleeve B relative to the outer side of the clamping block groove, and a top screw is provided in the top screw groove. The utility model provides an anti-slip groove on the inner wall of the connecting sleeve, which can be clamped and fixed to the sleeve B, so as to avoid shaking of the sleeve B after installation and improve the stability of the installation and positioning of the sleeve.

[0004] Existing high-voltage power cables are usually installed in mid-air or buried underground. Regardless of whether they are installed in mid-air or underground, one end of the cable is pulled and the cable is dragged to move, thereby completing the installation and laying of the cable. However, during the dragging process, friction occurs between the cable and the ground, causing damage to the cable skin. Summary of the invention

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-voltage power cable comprises a cable body, wherein the cable body consists of a wire core, a shielding sleeve, an insulating sleeve, a thermal insulation sleeve and a protective sleeve, and a plurality of support plates are arranged between the outer wall of the wire core and the inner wall of the shielding sleeve, the cross-section of the support plate is wavy, and the support plate is made of elastic insulating material, the gap between the wire core and the shielding sleeve is filled with insulating cotton, the outer wall of the shielding sleeve is bonded to the inner wall of the insulating sleeve, the inner wall of the thermal insulation sleeve and the insulating sleeve are filled with pressure-resistant cotton, the outer wall of the thermal insulation sleeve is bonded to the inner wall of the protective sleeve, the outer wall of the protective sleeve is provided with a plurality of anti-slip grooves, and the inner wall of the anti-slip groove is provided with a protective mechanism, and a protective component is arranged inside the protective mechanism.

[0007] Preferably, a plurality of positioning grooves are formed on the outer wall of the shielding sleeve, and a positioning plate is slidably connected to the inner wall of the positioning groove, and one end of the positioning plate is bonded to the insulating sleeve.

[0008] Preferably, a reinforcing rib is provided between the insulating sleeve and the heat-insulating sleeve, and the reinforcing rib is made of elastic material, a plurality of through holes are penetrated through one side of the reinforcing rib, and reinforcing ribs are inserted into the inner wall of the through holes, and the reinforcing ribs are made of metal elastic material.

[0009] Preferably, the protective mechanism includes a slider, a support block and a protective plate, and the slider is slidably connected to the inner wall of the anti-slip groove, the top of the slider is bonded to the bottom of the support block, the top of the support block is glued to the bottom of the protective plate, a through opening is opened through the top of the protective plate, a sealing groove is opened on the top of the support block, the positions of the through opening and the sealing groove correspond, and the protective component is located between the through opening and the sealing groove.

[0010] Preferably, the protective component consists of two baffles, two airbags, a piston plate and a push plate, and the two baffles are bonded to both sides of the inner wall of the anti-slip groove, the two baffles are symmetrically distributed, the airbag is located between one side of the baffle and the slider, the airbag is slidably connected to the anti-slip groove, one side of the airbag, the slider and the bottom of the sealing groove are all provided with air holes, the inner wall of the air hole is provided with a conduit, a first spring is provided between the bottom of the piston plate and the sealing groove, the top of the piston plate is bonded to the bottom of the push plate, a ball groove is provided on the top of the push plate, and a ball is rollingly connected to the inner wall of the ball groove.

[0011] Preferably, connecting grooves are provided on both sides of the through opening, and a drawer opening is provided through one side of the top of the connecting groove, an anti-rolling mechanism is provided between the connecting groove and the drawer opening, and the anti-rolling mechanism cooperates with the protective component.

[0012] Preferably, the anti-roll mechanism includes two rotating shafts, a swinging plate and a support plate, and a second spring is arranged between the two sides of the bottom of the support plate and the connecting groove, one end of the two rotating shafts are respectively connected to the inner wall of the connecting groove through bearings to form a rotation connection, the two sides of the swinging plate are fixedly connected to the other ends of the two rotating shafts, one side of the top of the swinging plate contacts the bottom of the support plate, the support plate is slidably connected to the inner wall of the pull-out port, and a driving assembly is arranged between one side of the bottom of the swinging plate and the push plate.

[0013] Preferably, the driving assembly consists of a rotating rod, a gear, a rack and a pull belt, and slots are provided on both sides of the push plate, the slots are fixedly connected to the rack, the rack and the gear are meshed, the two ends of the rotating rod are rotatably connected to the connecting groove through bearings, the gear is fixedly sleeved on the outer wall of the rotating rod, the two ends of the pull belt are respectively fixedly connected to one side of the bottom of the swing plate and the rotating rod, a guide rod is fixed between the two opposite sides of the connecting groove near the bottom, and the bottom of the guide rod is slidably connected to the pull belt.

[0014] Preferably, the top of the protective plate is configured as an arc surface, the ball is located in the middle of the protective plate, and the two support plates are located on both sides of the ball.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention provides a protective mechanism and a protective assembly. When installing and laying the cable, the operator will pull one end of the cable to drive the cable to move, thereby facilitating the installation or burying of the cable. During the movement of the cable, the protective mechanism will contact the ground. At this time, the slider will drive the protective plate to move due to friction, and the moving direction of the protective plate is opposite to the pulling direction of the cable. During the movement of the protective plate, the slider will squeeze the airbag. At this time, the gas inside the airbag will be transported to the inside of the sealing groove through the conduit, and the air pressure inside the sealing groove will increase due to the input of the gas. At this time, the piston plate will push the push plate upward under the action of the air pressure, so that the push plate drives the ball bearing to extend from the inside of the through-port and make the ball bearing contact with the ground, so that the friction between the ground and the cable can be reduced by the ball bearing, thereby facilitating the protection of the cable and preventing the cable skin from being damaged due to the friction between the cable and the ground during the dragging process.

[0017] 2. The present invention provides a protective component and an anti-rolling mechanism. When the cable is dragged, the push plate will move upward under the action of the piston plate. At this time, the rack will move with the movement of the push plate, and the rack will contact the gear during the movement. At this time, the gear drives the rotating rod to rotate through the meshing between the gear and the rack, and the rotating rod will reel in the pull belt when it rotates. At this time, the pull belt will pull one side of the bottom of the swing plate downward under the action of the guide rod, and the other side of the swing plate will deflect upward under the action of the rotating shaft. At this time, the support plate will extend from the inside of the drawing port under the action of the swing plate. Since the top of the protective plate is set as an arc surface, the ball is located in the middle position of the protective plate, and the support plate is located on both sides of the ball. Therefore, the extension height of the support plate is lower than the extension height of the ball. Therefore, in the process of pulling the cable, the support plate will support the pulling of the cable, thereby preventing the cable from rolling during pulling, so that the cable will be twisted due to the distortion caused by rolling during installation, thereby affecting the installation of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a high-voltage power cable proposed by the present invention;

[0019] Figure 2 A schematic diagram of the cable body structure of a high-voltage power cable proposed by the present invention;

[0020] Figure 3A schematic diagram of the local structure of a high-voltage power cable proposed by the present invention;

[0021] Figure 4 A schematic diagram of the structure of a protection mechanism for a high-voltage power cable proposed by the present invention;

[0022] Figure 5 A schematic cross-sectional view of a protective mechanism for a high-voltage power cable proposed by the present invention;

[0023] Figure 6 This is a schematic cross-sectional structure diagram of an anti-rolling mechanism of a high-voltage power cable proposed by the present invention;

[0024] Figure 7 This is a schematic structural diagram of an anti-rolling mechanism for a high-voltage power cable proposed by the present invention.

[0025] In the attached drawings: 1. cable body; 2. protection mechanism; 3. through-hole; 4. protection assembly; 5. wire core; 6. support plate; 7. insulating cotton; 8. shielding sleeve; 9. insulating sleeve; 10. positioning plate; 11. reinforcing rib; 12. heat-insulating sleeve; 13. pressure-resistant cotton; 14. protective sleeve; 15. anti-skid groove; 16. reinforcing rib; 17. positioning groove; 18. slider; 19. support block; 20. protection plate; 21. baffle; 22. airbag; 23. sealing groove; 24. guide tube; 25. first spring; 26. piston plate; 27. push plate; 28. ball; 29. ​​connecting groove; 30. pull-out mouth; 31. anti-roll mechanism; 32. notch; 33. rack; 34. rotating rod; 35. gear; 36. guide rod; 37. pull belt; 38. rotating shaft; 39. swing plate; 40. support plate; 41. second spring. DETAILED DESCRIPTION

[0026] Example 1, reference Figure 1-Figure 5 A high-voltage power cable comprises a cable body 1, the cable body 1 is composed of a core 5, a shielding sleeve 8, an insulating sleeve 9, a heat-insulating sleeve 12 and a protective sleeve 14, and a plurality of support plates 6 are arranged between the outer wall of the core 5 and the inner wall of the shielding sleeve 8, the cross section of the support plate 6 is wavy, the support plate 6 is made of elastic insulating material, the gap between the core 5 and the shielding sleeve 8 is filled with insulating cotton 7, the outer wall of the shielding sleeve 8 is bonded to the inner wall of the insulating sleeve 9, the inner wall of the heat-insulating sleeve 12 and the insulating sleeve 9 are filled with pressure-resistant cotton 13, the outer wall of the heat-insulating sleeve 12 is bonded to the inner wall of the protective sleeve 14, the outer wall of the protective sleeve 14 is provided with a plurality of anti-skid grooves 15, and the inner wall of the anti-skid groove 15 is provided with a protective mechanism 2, and a protective component 4 is arranged inside the protective mechanism 2, which can reduce the friction between the ground and the cable, thereby facilitating the protection of the cable and preventing the cable skin from being damaged due to the friction between the cable and the ground during the dragging process.

[0027] On the basis of the above, a plurality of positioning grooves 17 are formed on the outer wall of the shielding sleeve 8 , and a positioning plate 10 is slidably connected to the inner wall of the positioning groove 17 , and one end of the positioning plate 10 is bonded to the insulating sleeve 9 .

[0028] On the basis of the above, a reinforcing rib 11 is arranged between the insulating sleeve 9 and the heat insulating sleeve 12, and the reinforcing rib 11 is made of elastic material. A plurality of through holes are penetrated through one side of the reinforcing rib 11, and reinforcing ribs 16 are inserted into the inner wall of the through holes, and the reinforcing ribs 16 are made of metal elastic material.

[0029] On the basis of the above, the protective mechanism 2 includes a slider 18, a support block 19 and a protective plate 20, and the slider 18 is slidably connected to the inner wall of the anti-slip groove 15, the top of the slider 18 is bonded to the bottom of the support block 19, the top of the support block 19 is glued to the bottom of the protective plate 20, a through opening 3 is opened through the top of the protective plate 20, a sealing groove 23 is opened at the top of the support block 19, the positions of the through opening 3 and the sealing groove 23 correspond, and the protective component 4 is located between the through opening 3 and the sealing groove 23.

[0030] On the basis of the above, the protective component 4 consists of two baffles 21, two airbags 22, a piston plate 26 and a push plate 27, and the two baffles 21 are bonded to both sides of the inner wall of the anti-skid groove 15, and the two baffles 21 are symmetrically distributed. The airbag 22 is located between one side of the baffle 21 and the slider 18, and the airbag 22 is slidably connected to the anti-skid groove 15. One side of the airbag 22, the slider 18 and the bottom of the sealing groove 23 are all provided with air holes, and the inner wall of the air hole is provided with a conduit 24. A first spring 25 is provided between the bottom of the piston plate 26 and the sealing groove 23, and the top of the piston plate 26 is bonded to the bottom of the push plate 27. A ball groove is provided on the top of the push plate 27, and a ball groove is rollingly connected to the inner wall of the ball groove. When the ball 28 and the protective plate 20 are moving, the slider 18 will squeeze the airbag 22. At this time, the gas inside the airbag 22 will be transported to the inside of the sealing groove 23 through the conduit 24, and the air pressure inside the sealing groove 23 will increase due to the input of the gas. At this time, the piston plate 26 will push the push plate 27 upward under the action of the air pressure, so that the push plate 27 drives the ball 28 to extend from the inside of the through hole 3 and makes the ball 28 contact with the ground, so that the friction between the ground and the cable can be reduced through the ball 28, thereby facilitating the protection of the cable and preventing the cable skin from being damaged due to the friction between the cable and the ground during the dragging process.

[0031] Example 2, reference Figure 1-Figure 7 , a high-voltage power cable, compared with embodiment 1, on the basis of embodiment 1, connecting grooves 29 are opened on opposite sides of the through opening 3, and a pull-out opening 30 is opened through one side of the top of the connecting groove 29, and an anti-rolling mechanism 31 is arranged between the connecting groove 29 and the pull-out opening 30, and the anti-rolling mechanism 31 is matched with the protective component 4.

[0032] On the basis of the above, the anti-rolling mechanism 31 includes two rotating shafts 38, a swinging plate 39 and a support plate 40, and a second spring 41 is arranged between the two sides of the bottom of the support plate 40 and the connecting groove 29, one end of the two rotating shafts 38 is respectively connected to the inner wall of the connecting groove 29 through bearings to form a rotation connection, the two sides of the swinging plate 39 are fixedly connected to the other end of the two rotating shafts 38, one side of the top of the swinging plate 39 is in contact with the bottom of the support plate 40, the support plate 40 is slidably connected to the inner wall of the pull-out opening 30, and a driving assembly is arranged between one side of the bottom of the swinging plate 39 and the push plate 27.

[0033] On the basis of the above, the driving assembly is composed of a rotating rod 34, a gear 35, a rack 33 and a pull belt 37, and notches 32 are opened on both sides of the push plate 27, the notches 32 are fixedly connected to the rack 33, the rack 33 and the gear 35 are meshed, and the two ends of the rotating rod 34 are rotatably connected to the connecting groove 29 through bearings. The gear 35 is fixedly sleeved on the outer wall of the rotating rod 34, and the two ends of the pull belt 37 are respectively fixedly connected to one side of the bottom of the swing plate 39 and the rotating rod 34, and the opposite sides of the connecting groove 29 are close to each other. A guide rod 36 is fixed near the bottom, and the bottom of the guide rod 36 is slidably connected to the pull belt 37. The top of the protective plate 20 is set as an arc surface, the ball 28 is located in the middle of the protective plate 20, and the two support plates 40 are located on both sides of the ball 28. In the process of pulling the cable, the support plate 40 will support the pulling of the cable, so as to prevent the cable from rolling when being pulled, so that the cable will be twisted due to the twisting caused by rolling during installation, thereby affecting the installation of the cable.

[0034] In summary, with the help of the above technical solution of the present invention: when installing and laying the cable, the operator will pull one end of the cable to drive the cable to move, so as to facilitate the installation or burial of the cable. During the movement of the cable, the protective mechanism 2 will contact the ground. At this time, due to friction, the slider 18 will drive the protective plate 20 to move, and the moving direction of the protective plate 20 is opposite to the pulling direction of the cable. During the movement of the protective plate 20, the slider 18 will squeeze the airbag 22. At this time, the gas inside the airbag 22 will pass through the conduit 2 4 is transported to the inside of the sealing groove 23, and the air pressure inside the sealing groove 23 will increase due to the input of gas. At this time, the piston plate 26 will push the push plate 27 upward under the action of the air pressure, so that the push plate 27 drives the ball 28 to extend from the inside of the through hole 3 and make the ball 28 contact the ground, so that the friction between the ground and the cable can be reduced by the ball 28, so as to facilitate the protection of the cable and prevent the cable skin from being damaged due to the friction between the cable and the ground during the dragging process. When the cable is dragged, the push plate 27 The gear 35 is engaged with the rack 33, and the gear 35 drives the rotating rod 34 to rotate. The rotating rod 34 rewinds the drawstring 37 when rotating. At this time, the drawstring 37 pulls one side of the bottom of the swing plate 39 downward under the action of the guide rod 36, and the other side of the swing plate 39 deflects upward under the action of the rotating shaft 38. At this time, the support plate 40 will It extends from the inside of the pull-out opening 30 under the action of the swing plate 39. Since the top of the protective plate 20 is set as an arc surface, and the ball 28 is located in the middle position of the protective plate 20, and the support plate 40 is located on both sides of the ball 28, the extension height of the support plate 40 is lower than the extension height of the ball 28. Therefore, in the process of pulling the cable, the support plate 40 will support the pulling of the cable, thereby preventing the cable from rolling when being pulled, so that the cable will be twisted due to the twisting caused by rolling during installation, thereby affecting the installation of the cable.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high voltage power cable, comprising a cable body (1), characterized in that: The cable body (1) is composed of a wire core (5), a shielding sleeve (8), an insulating sleeve (9), a heat-insulating sleeve (12) and a protective sleeve (14), and a plurality of support plates (6) are arranged between the outer wall of the wire core (5) and the inner wall of the shielding sleeve (8), the cross-section of the support plate (6) is wavy, and the support plate (6) is made of elastic insulating material. The gap between the wire core (5) and the shielding sleeve (8) is filled with insulating cotton (7), the outer wall of the shielding sleeve (8) is bonded to the inner wall of the insulating sleeve (9), the inner wall of the heat-insulating sleeve (12) and the insulating sleeve (9) are filled with pressure-resistant cotton (13), the outer wall of the heat-insulating sleeve (12) is bonded to the inner wall of the protective sleeve (14), and the outer wall of the protective sleeve (14) is provided with a plurality of anti-slip grooves (15). , and the inner wall of the anti-skid groove (15) is provided with a protective mechanism (2), and the interior of the protective mechanism (2) is provided with a protective component (4), and the protective mechanism (2) comprises a slider (18), a support block (19) and a protective plate (20), and the slider (18) is slidably connected to the inner wall of the anti-skid groove (15), the top of the slider (18) is bonded to the bottom of the support block (19), and the top of the support block (19) is bonded to the bottom of the protective plate (20), a through opening (3) is formed through the top of the protective plate (20), a sealing groove (23) is formed at the top of the support block (19), the through opening (3) and the sealing groove (23) are located at corresponding positions, the protective component (4) is located between the through opening (3) and the sealing groove (23), and the protective component (4) is composed of two A baffle (21), two air bags (22), a piston plate (26) and a push plate (27), wherein the two baffles (21) are bonded to both sides of the inner wall of the anti-skid groove (15), the two baffles (21) are symmetrically distributed, the air bag (22) is located between one side of the baffle (21) and the slider (18), the air bag (22) is slidably connected to the anti-skid groove (15), one side of the air bag (22), the slider (18) and the bottom of the sealing groove (23) are all provided with air holes, the inner wall of the air hole is provided with a conduit (24), a first spring (25) is provided between the bottom of the piston plate (26) and the sealing groove (23), the top of the piston plate (26) is bonded to the bottom of the push plate (27), the top of the push plate (27) is provided with a ball groove, and the inner wall of the ball groove is rollingly connected with a A ball (28), connecting grooves (29) are provided on opposite sides of the through opening (3), and a draw-out opening (30) is provided on one side of the top of the connecting groove (29), an anti-rolling mechanism (31) is provided between the connecting groove (29) and the draw-out opening (30), the anti-rolling mechanism (31) cooperates with the protection component (4), the anti-rolling mechanism (31) comprises two rotating shafts (38), a swing plate (39) and a support plate (40), and a second spring (41) is provided between the two sides of the bottom of the support plate (40) and the connecting groove (29), one end of the two rotating shafts (38) is respectively connected to the inner wall of the connecting groove (29) through a bearing to form a rotation connection, and the two sides of the swing plate (39) are fixedly connected to the other ends of the two rotating shafts (38),One side of the top of the swing plate (39) contacts the bottom of the support plate (40), and the support plate (40) is slidably connected to the inner wall of the draw-out opening (30). A driving assembly is provided between one side of the bottom of the swing plate (39) and the push plate (27), and the driving assembly is composed of a rotating rod (34), a gear (35), a rack (33) and a pull belt (37). Notches (32) are provided on both sides of the push plate (27), and the notches (32) are fixedly connected to the rack (33), and the rack (33) is meshed with the gear (35). Both ends of the swing rod (34) are connected to the connecting groove (2 9) are connected to each other by a bearing, the gear (35) is fixedly sleeved on the outer wall of the rotating rod (34), the two ends of the pull belt (37) are respectively fixedly connected to one side of the bottom of the swing plate (39) and the rotating rod (34), a guide rod (36) is fixed between the two opposite sides of the connecting groove (29) near the bottom, the bottom of the guide rod (36) is slidably connected to the pull belt (37), the top of the protective plate (20) is set as an arc surface, the ball (28) is located in the middle of the protective plate (20), and the two support plates (40) are located on both sides of the ball (28).

2. A high voltage power cable according to claim 1, characterized in that: The outer wall of the shielding sleeve (8) is provided with a plurality of positioning grooves (17), and the inner wall of the positioning groove (17) is slidably connected with a positioning plate (10), and one end of the positioning plate (10) is bonded to the insulating sleeve (9).

3. A high voltage power cable according to claim 1, characterized in that: A reinforcing rib (11) is provided between the insulating sleeve (9) and the heat insulating sleeve (12), and the reinforcing rib (11) is made of an elastic material. A plurality of through holes are provided through one side of the reinforcing rib (11), and reinforcing ribs (16) are inserted into the inner walls of the through holes. The reinforcing ribs (16) are made of a metallic elastic material.

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