CN111799723A

CN111799723A - Electrical engineering cable protection device

Info

Publication number: CN111799723A
Application number: CN202010701318.8A
Authority: CN
Inventors: 沈小迪
Original assignee: 沈小迪
Current assignee: DONGTAI FINTECH ELECTRIC EQUIPMENT Co.,Ltd.
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-10-20
Anticipated expiration: 2040-07-20
Also published as: CN111799723B

Abstract

The invention relates to the technical field of electrical engineering, and discloses an electrical engineering cable protection device, which is characterized in that two cables are connected, two moving plates are moved rightwards to be separated from a threaded pipe after the two cables are connected, the two threaded pipes and a connecting pipe are rotated in opposite directions to each other, the threaded pipe and the connecting pipe can be meshed and connected, the threaded pipe and the connecting pipe can move in the direction of approaching each other, two protection pipes are respectively driven to move in the direction of approaching each other, two rubber rings can move in the direction of approaching each other, when the two rubber rings are respectively attached to the left end and the right end of the sealing pipe, the two rubber rings can be respectively closely attached to the two sealing pipes, the two moving plates are moved leftwards, the two moving plates are attached to two surfaces of the outer sides of the threaded pipe, the threaded pipe can be prevented from rotating to be separated from the connecting pipe, and the short circuit at the joint of the two cables caused by, reduce the damage that the cable received.

Description

Electrical engineering cable protection device

Technical Field

The invention relates to the technical field of electrical engineering, in particular to an electrical engineering cable protection device.

Background

Cable is a generic term for optical cables, electrical cables, and the like. The cable has many purposes, is mainly used for controlling installation, connecting equipment, transmitting power and other multiple functions, and is a common and indispensable object in daily life.

Present patent number CN105914674A has proposed a cable protection pipe, can increase and decrease the length of body in the middle of according to actual need, and the integral erection is simple and convenient, can swiftly the efficient accomplish the equipment work of cable protection pipe, improves the installation effectiveness of cable protection pipe in-service use, and long and the work load was installed in the reduction correlation. And moreover, the cable duct on the wind driven generator can be connected through the connecting flange, so that the output cable of the wind driven generator is protected. But when using when connecting the pipeline bolt fastening to bury in underground, vibrations take place in the ground and let the bolt produce not hard up easily, thereby influence sealed effect, lead to groundwater to get into and cause the short circuit phenomenon in the pipeline.

Because the cable is electrified, so the installation need be prudent very much, most cables are all buried underground and are installed, and can't avoid when laying the cable connecting with two cables, thereby just so hardly exempt from need demolish the connection with the outward appearance of cable, reconnection is in after connecting and protects the processing, just can wrap up the cable with the pipeline in order to protect the cable underground not impaired and bury underground, and generally when protection pipeline junction is sealed, mostly seal with the bolt or seal with the screwed pipe, sealed effect is poor like this, will produce when the bolt takes place to rotate with the screwed pipe simultaneously and drop, thereby inconvenient user uses.

Therefore, an electrical engineering cable protection device is needed to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an electrical engineering cable protection device which has the advantages of preventing the connection part of a protection tube from falling off and the like, and solves the problems that the connection part of a common protection pipeline is mostly sealed by bolts or threaded pipes when the connection part of the common protection pipeline is sealed in order to protect the cable from being damaged underground, so that the sealing effect is poor, and meanwhile, the bolts and the threaded pipes can fall off when rotating, so that the use by a user is inconvenient.

(II) technical scheme

In order to achieve the purpose of preventing the protective pipe from falling off at the joint, the invention provides the following technical scheme: an electrical engineering cable protection device comprises two protection tubes, wherein one side of each protection tube close to each other is provided with a ring groove, one wall of each ring groove far away from each other is fixedly provided with a rubber ring, a sealing tube is arranged between the two protection tubes, the left end and the right end of the sealing tube are respectively movably connected with the two ring grooves, the outer wall of the protection tube on the right side is fixedly sleeved with a support ring, the right side of the support ring is movably penetrated with a threaded tube, the outer side of the threaded tube arranged on the inner wall of the threaded rod is provided with a hexagon, the outer wall of the protection tube on the left side is provided with an annular chute, the inner, and the connecting pipe outside is provided with the screw thread, has seted up two logical grooves on the support ring, and two lead to equal swing joint in the inslot have the movable plate, and the equal fixed mounting in right side of two movable plates has the backup pad, and swing joint has two cables in two protective tubes.

Preferably, the sealing tube inner wall fixed mounting has two connecting plates, the equal fixed mounting in one side that two connecting plates are close to each other has the diaphragm, the equal fixed mounting in the left and right sides of two diaphragms has two connecting blocks, the left and right sides of two diaphragms all is provided with the trapezoidal piece, the spout has all been seted up to two one sides that are close to each other of four trapezoidal pieces, four connecting blocks respectively with four spout swing joint, the equal fixed mounting in one wall that four spouts kept away from the cable respectively has pressure spring an, four pressure spring a respectively with four connecting block fixed connection, equal fixed mounting has the shift ring in two protective tubes, one side that two shift rings kept away from each.

Preferably, the top device groove has been seted up to the diaphragm upside, the rotary rod has been run through in the activity of two walls about the device groove, the last fixed cover of rotary rod has connect the gear, the equal fixed mounting in one side that two trapezoidal blocks in top were kept away from each other has the connecting strip, the equal fixed mounting in one side that two connecting strips were kept away from each other has the rack, two racks are connected with two gear engagement respectively, two cable junctions are provided with the shrink area, the shrink groove has been seted up on the shrink area, the shrink groove is run through in the upper end activity in shrink area, the shrink area forms annular and activity cup joints at two cable junctions, the upper end activity in shrink area runs through the diaphragm of top and twines at.

Preferably, four the fixed slot has all been seted up to one side that trapezoidal piece is close to the cable respectively, and equal fixed mounting has the rubber slab in four fixed slots.

Preferably, the right side fixed mounting of support ring has two spacing posts, and equal activity has cup jointed the extension spring on two spacing posts, and the left end of two extension springs all is with support ring fixed connection, the right-hand member of two extension springs respectively with two backup pad fixed connection.

Preferably, the two protection pipes are internally and fixedly provided with semi-rings, the lower sides of the two protection pipes are provided with water flowing grooves, and the two water flowing grooves are respectively arranged on the two semi-rings away from each other.

Preferably, two the equal fixedly connected with drain pipe of protection tube downside, equal fixed mounting has the filter in two drain pipes.

(III) advantageous effects

Compared with the prior art, the invention provides an electrical engineering cable protection device, which has the following beneficial effects:

1. this electrical engineering cable protection device, through with two movable plates and the wherein two-sided laminating in the screwed pipe outside, just so can prevent that the screwed pipe from taking place to rotate and connecting pipe separation, the outside through the screwed pipe can convenience of customers rotatory screwed pipe for the hexagon, two movable plates can be removed by convenience of customers to two backup pads, thereby just so can prevent that external rainwater from getting into in two protective tubes and leading to two cable junctions to take place the short circuit to reduce the injury that the cable received.

2. This electrical engineering cable protection device moves respectively to the cable direction through four trapezoidal pieces and can fix two cables to two cables can not overhaul the condition such as take place the displacement because of other positions, and the junction from two protection tubes that like this can be accurate overhauls when overhauing two cable junctions, thereby makes things convenient for the staff later stage to carry out the junction to the cable and overhauls.

3. This electrical engineering cable protection device takes up the rotary rod through the shrink tape on, the ring that the shrink tape formed like this will shrink, just so can wrap up two cables to the protection does not receive the damage with the junction of stabilizing two cables.

4. This electrical engineering cable protection device, when laminating with two cables respectively through four rubber slabs, four trapezoidal pieces can cushion when continuing two cables and remove, prevent simultaneously that four trapezoidal pieces from damaging the outward appearance of cable when fixed two cables to lead to the cable impaired, improve the practicality of device like this.

5. This electrical engineering cable protection device will promote two backup pads respectively through the resilience of two extension springs and drive two movable plates and move left, can prevent simultaneously that two movable plates from moving left and right in the use and influencing the leakproofness of device to improve the safety effect of device.

6. This electrical engineering cable protection device sets up two tye down through burying the cable when underground, and two semi-rings block, and the seepage enters two protection tube water-logging and blocks when can preventing the condition such as two protection tube other places break off, and water will follow two tye and flow down to can not pile up in the protection tube and contact two cable junctions, thereby improve device's protective scope.

7. This electrical engineering cable protection device can be respectively with the water that flows out from two tyes through two drain pipes, flows into the underground along two drain pipes respectively, and two filter can prevent that earth from getting into in the protection tube, can pile up partly water in two drain pipes simultaneously to prevent that the water that two semi-rings blockked from contacting two cable junctions too much, just so can improve the factor of safety of two cable junctions.

8. This electrical engineering cable protection device through inserting two drain pipes on the column, can cooperate two shift rings, when the staff is connected two cables, the stability of holding device and cable to make things convenient for the staff to connect two cables.

9. This electrical engineering cable protection device can keep four rubber slabs to remain stable respectively through four fixed slots, can not be to the atress to other orientation deformations to can keep closely laminating with two cables after two protection tube connections, thereby carry on two cables spacing not let two cables take place the displacement and lead to the junction to take place the displacement, can be like this respectively later stage staff dismantles the change circuit.

Drawings

FIG. 1 is a schematic front sectional perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B according to the present invention;

FIG. 4 is a schematic cross-sectional view of the present invention;

FIG. 5 is an enlarged partial view of FIG. 4 at C;

FIG. 6 is an enlarged partial schematic view of FIG. 4 at D in accordance with the present invention;

fig. 7 is a schematic front sectional perspective view of the sealing tube of fig. 1 according to the present invention.

In the figure: 1. protecting the tube; 2. a device slot; 3. a limiting column; 4. a support plate; 5. a tension spring; 6. moving the plate; 7. a through groove; 8. a support ring; 9. a threaded pipe; 10. rotating the rod; 11. a connecting plate; 12. a sealing tube; 13. a connecting pipe; 14. a rubber ring; 15. a rotating ring; 16. an annular chute; 17. an annular groove; 18. a trapezoidal block; 19. fixing grooves; 20. a rubber plate; 21. A cable; 22. a half ring; 23. a moving ring; 24. a launder; 25. a filter plate; 26. a drain pipe; 27. a shrink band; 28. A transverse plate; 29. fixing grooves; 30. a pressure spring a; 31. a connecting strip; 32. a rack; 33. a gear; 34. connecting blocks; 35. And (4) shrinking the groove.

Detailed Description

The present invention will be described in further detail with reference to the drawings, wherein like elements are designated by like reference numerals, wherein the terms "front", "rear", "left", "right", "upper" and "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular element.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: an electrical engineering cable protection device comprises two protection tubes 1, wherein one side of each protection tube 1 close to each other is provided with a ring groove 17, one wall of each ring groove 17 far away from each other is fixedly provided with a rubber ring 14, a sealing tube 12 is arranged between the two protection tubes 1, the left end and the right end of the sealing tube 12 are respectively movably connected with the two ring grooves 17, the outer wall of the protection tube 1 on the right side is fixedly sleeved with a support ring 8, the right side of the support ring 8 is movably penetrated with a threaded tube 9, the inner wall of the threaded tube 9 is provided with threads, the outer side of the threaded tube 9 is hexagonal, the outer wall of the protection tube 1 on the left side is provided with a ring chute 16, the ring chute 16 is movably connected with a rotating ring 15, the outer wall of the rotating ring 15 is fixedly sleeved with a connecting tube 13, the, the supporting plate 4 is fixedly arranged at the right sides of the two moving plates 6, the two cables 21 are movably connected in the two protection tubes 1, the two cables 21 are connected, after the two cables 21 are connected, the two moving plates 6 move rightwards to be separated from the threaded tubes 9, the two threaded tubes 9 and the connecting tube 13 rotate towards mutually opposite directions, so that the threaded pipe 9 and the coupling pipe 13 can be engaged and coupled, and at the same time, the threaded pipe 9 and the coupling pipe 13 are moved in a direction to approach each other, thereby respectively driving the two protection tubes 1 to move towards each other, so that the two rubber rings 14 move towards each other, when the two rubber rings 14 are respectively jointed with the left end and the right end of the sealing tube 12, the two threaded tubes 9 and the connecting tube 13 are continuously rotated, therefore, the two rubber rings 14 are respectively tightly attached to the two sealing pipes 12, and then the two moving plates 6 are moved leftwards to attach the two moving plates 6 to two surfaces of the outer side of the threaded pipe 9.

Two connecting plates 11 are fixedly arranged on the inner wall of the sealing tube 12, transverse plates 28 are fixedly arranged on the mutually close sides of the two connecting plates 11, two connecting blocks 34 are fixedly arranged on the left and right sides of the two transverse plates 28, trapezoidal blocks 18 are arranged on the left and right sides of the two transverse plates 28, sliding grooves 29 are formed in the mutually close sides of the four trapezoidal blocks 18, the four connecting blocks 34 are respectively movably connected with the four sliding grooves 29, pressure springs a30 are respectively fixedly arranged on the walls of the four sliding grooves 29 far away from the cable 21, the four pressure springs a30 are respectively fixedly connected with the four connecting blocks 34, moving rings 23 are respectively fixedly arranged in the two protection tubes 1, the mutually far sides of the two moving rings 23 are inclined planes, the two protection tubes 1 move towards the mutually close direction, so that the two moving rings 23 are respectively driven to move towards the mutually close direction, when the two moving rings 23 are respectively attached to the inclined planes of the, the two moving rings 23 move continuously, and respectively drive the four trapezoidal blocks 18 to move towards the two cables 21, and when the four trapezoidal blocks 18 are respectively attached to the two cables 21, the two cables 21 are fixed.

The upper side of the transverse plate 28 at the upper part is provided with a device groove 2, the left wall and the right wall of the device groove 2 are movably penetrated with a rotating rod 10, the upper part of the rotating rod 10 is fixedly sleeved with a gear 33, the side, far away from each other, of each of the two trapezoidal blocks 18 at the upper part is fixedly provided with a connecting strip 31, the side, far away from each other, of each of the two connecting strips 31 is fixedly provided with a rack 32, the two racks 32 are respectively meshed with the two gears 33, the joint of the two cables 21 is provided with a contraction belt 27, the contraction belt 27 is provided with a contraction groove 35, the upper end of the contraction belt 27 movably penetrates through the contraction groove 35, the contraction belt 27 is annularly and movably sleeved at the joint of the two cables 21, the upper end of the contraction belt 27 movably penetrates through the transverse plate 28 at the upper part and is wound on the rotating rod 10, when the two trapezoidal, this causes the two gears 33 to rotate, respectively, and thus the rotating rod 10 to rotate, so that the contraction band 27 is wound around the rotating rod 10, and the loop formed by the contraction band 27 is contracted.

Four trapezoidal pieces 18 are close to one side of cable 21 respectively and have all been seted up fixed slot 19, and equal fixed mounting has rubber slab 20 in four fixed slot 19, and four trapezoidal pieces 18 move to two cables 21 respectively to four rubber slabs 20 will move to two cable 21 directions respectively, and when four rubber slabs 20 respectively with two cable 21 laminating, four trapezoidal pieces 18 continued when moving to two cables 21, can cushion.

Two spacing posts 3 of support ring 8's right side fixed mounting, equal activity has cup jointed extension spring 5 on two spacing posts 3, the left end of two extension springs 5 all with support ring 8 fixed connection, the right-hand member of two extension springs 5 respectively with two backup pad 4 fixed connection, move two movable plates 6 right, thereby drive two backup pad 4 right movements, just so can drive two extension springs 5 right deformations respectively, after being connected screwed pipe 9 and connecting pipe 13 meshing, loosening two backup pads 4, thereby two backup pad 4 that will promote respectively to kick-back of two extension springs 5 drive two movable plates 6 and move left.

All fixed mounting has half ring 22 in two protection tubes 1, and tye 24 has all been seted up to two protection tubes 1 downside, and two tyes 24 set up respectively in the mutual party of keeping away from of two semi-rings 22, set up two tyes 24 down when burying cable 21 underground, and two semi-rings 22 block, and the seepage blocks in two protection tubes 1 when can preventing that two protection tubes 1 other places from taking place the condition such as fracture, and water will follow two tyes 24 and flow downwards.

The equal fixedly connected with drain pipe 26 of two protection tube 1 downside, equal fixed mounting has filter 25 in two drain pipes 26, and two drain pipes 26 can be respectively with the water that flows out from two tyers 24, flow into the underground along two drain pipes 26 respectively, and two filter 25 can prevent that earth from getting into protection tube 1 in, can pile up partly water in two drain pipes 26 simultaneously to prevent that the water that two semi-rings 22 blockked from contacting two cable 21 junctions too much.

In use, the first step: by connecting the two cables 21, moving the two moving plates 6 to the right to separate from the threaded pipes 9 after connection, and rotating the two threaded pipes 9 and the connecting pipes 13 in opposite directions, the threaded pipes 9 and the connecting pipes 13 can be engaged and connected, and simultaneously the threaded pipes 9 and the connecting pipes 13 can move in directions close to each other, so as to respectively drive the two protective pipes 1 to move in directions close to each other, so that the two rubber rings 14 can move in directions close to each other, when the two rubber rings 14 are respectively attached to the left and right ends of the sealing pipes 12, the two threaded pipes 9 and the connecting pipes 13 are continuously rotated, so that the two rubber rings 14 can be respectively attached to the two sealing pipes 12, and then moving the two moving plates 6 to the left to attach the two moving plates 6 to two surfaces of the outer sides of the threaded pipes 9, so that the threaded pipes 9 can be prevented from rotating to separate from the connecting pipes 13, thus, external rainwater can be prevented from entering the two protection pipes 1, so that the joint of the two cables 21 is short-circuited, and the damage to the cables 21 is reduced.

The second step is that: move to the direction that is close to each other through two protection tubes 1, thereby will drive two shift rings 23 respectively and remove to the direction that is close to each other, when two shift rings 23 respectively with four trapezoidal blocks 18's bevel laminating, two shift rings 23 continue to remove, will drive four trapezoidal blocks 18 respectively and remove to two cables 21, will fix two cables 21 when four trapezoidal blocks 18 respectively with two cable 21 laminating, thereby two cables 21 can not overhaul the condition such as the displacement because other positions take place, can be accurate when overhauing two cable 21 junctions like this overhaul the junction accuracy from two protection tubes 1, thereby make things convenient for the staff later stage to carry out the junction to cable 21 and overhaul.

The third step: when moving downwards through two trapezoidal pieces 18 in the top, will drive two connecting strips 31 respectively and move downwards to drive two racks 32 respectively and move downwards, will drive two gears 33 respectively and rotate like this, thereby drive the rotary rod 10 rotatory, just so can batch shrink area 27 on the rotary rod 10, thereby the ring that shrink area 27 formed will shrink, just so can wrap up two cables 21, thereby the protection does not receive the damage with the junction of stabilizing two cables 21.

The fourth step: the four trapezoidal blocks 18 move towards the two cables 21 respectively, so that the four rubber plates 20 move towards the two cables 21 respectively, when the four rubber plates 20 are attached to the two cables 21 respectively, the four trapezoidal blocks 18 can buffer when continuing to move the two cables 21, and meanwhile, the four trapezoidal blocks 18 are prevented from damaging the appearance of the cables 21 when fixing the two cables 21, so that the cables 21 are damaged, and the practicability of the device is improved.

The fifth step: the two movable plates 6 are moved rightwards, so that the two support plates 4 are driven to move rightwards, the two tension springs 5 can be driven to deform rightwards respectively, after the threaded pipes 9 are meshed with the connecting pipes 13 and connected, the two support plates 4 are loosened, the two support plates 4 are pushed to drive the two movable plates 6 to move leftwards respectively through resilience of the two tension springs 5, meanwhile, the two movable plates 6 can be prevented from moving leftwards and rightwards in the using process to affect the sealing performance of the device, and the safety effect of the device is improved.

And a sixth step: through burying two tye 24 down setting when underground with cable 21, two semi-rings 22 block, the infiltration is gone into two protection tube 1 internal water and is blockked when can preventing that two protection tube 1 other places from taking place the condition such as fracture, and water will follow two tye 24 and flow out downwards to can not pile up in protection tube 1 and contact two cable 21 junctions, thereby improve the protective scope of device.

The seventh step: the water flowing out from the two water flowing grooves 24 can flow into the ground along the two water draining pipes 26 through the two water draining pipes 26 respectively, the two filtering plates 25 can prevent soil from entering the protective pipe 1, and meanwhile, part of water can be accumulated in the two water draining pipes 26, so that the excessive water blocked by the two half rings 22 is prevented from contacting the joint of the two cables 21, and the safety factor of the joint of the two cables 21 can be improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electrical engineering cable protection device, includes two protection tubes (1), its characterized in that: two ring grooves (17) are formed in one side, close to each other, of each protection tube (1), a rubber ring (14) is fixedly mounted on one wall, far away from each other, of each ring groove (17), a sealing tube (12) is arranged between the two protection tubes (1), the left end and the right end of each sealing tube (12) are movably connected with the two ring grooves (17) respectively, a support ring (8) is fixedly sleeved on the outer wall of the protection tube (1) on the right side, a threaded tube (9) movably penetrates through the right side of the support ring (8), the outer side, provided with the threaded tube (9), of the inner wall of the threaded rod (9) is hexagonal, an annular sliding groove (16) is formed in the outer wall of the protection tube (1) on the left side, a rotating ring (15) is movably connected in the annular sliding groove (16), a connecting tube (13) is fixedly sleeved on, all swing joint has movable plate (6) in two logical groove (7), and the equal fixed mounting in right side of two movable plates (6) has backup pad (4), and swing joint has two cables (21) in two protection tube (1).

2. An electrical engineering cable protection device according to claim 1, characterized in that: sealing tube (12) inner wall fixed mounting has two connecting plates (11), the equal fixed mounting in one side that two connecting plates (11) are close to each other has diaphragm (28), the equal fixed mounting in the left and right sides of two diaphragm (28) has two connecting blocks (34), the left and right sides of two diaphragm (28) all is provided with trapezoidal piece (18), spout (29) have all been seted up to two liang one sides that are close to each other in four trapezoidal pieces (18), four connecting blocks (34) respectively with four spout (29) swing joint, the equal fixed mounting in a wall that cable (21) were kept away from respectively in four spout (29) has pressure spring a (30), four pressure spring a (30) respectively with four connecting blocks (34) fixed connection, equal fixed mounting has shift ring (23) in two protection pipes (1), one side that two shift rings (23) kept away from each other is the inclined plane.

3. An electrical engineering cable protection device according to claim 1, characterized in that: top device groove (2) have been seted up to diaphragm (28) upside, two wall activities of the left and right sides in device groove (2) run through rotary rod (10), last fixed cup joint gear (33) of rotary rod (10), the equal fixed mounting in one side of keeping away from each other of two trapezoidal blocks (18) in top has connecting strip (31), the equal fixed mounting in one side of keeping away from each other of two connecting strip (31) has rack (32), two rack (32) are connected with two gear (33) meshing respectively, two cable (21) junctions are provided with shrink area (27), shrink groove (35) have been seted up on shrink area (27), shrink groove (35) have been run through in the upper end activity of shrink area (27), shrink area (27) form the annular and activity cup joints in two cable (21) junctions, the upper end activity of shrink area (27) runs through diaphragm (28) and twine at rotary rod (10) of top.

4. An electrical engineering cable protection device according to claim 2, characterized in that: four fixed slots (19) have all been seted up to trapezoidal piece (18) one side that is close to cable (21) respectively, and equal fixed mounting has rubber slab (20) in four fixed slots (19).

5. An electrical engineering cable protection device according to claim 1, characterized in that: the right side fixed mounting of support ring (8) has two spacing posts (3), and equal activity has cup jointed extension spring (5) on two spacing posts (3), and the left end of two extension springs (5) all with support ring (8) fixed connection, the right-hand member of two extension springs (5) respectively with two backup pad (4) fixed connection.

6. An electrical engineering cable protection device according to claim 1, characterized in that: two all fixed mounting has semi-ring (22) in protection tube (1), and tye (24) have all been seted up to two protection tube (1) downside, and two tye (24) set up the party of keeping away from each other at two semi-rings (22) respectively.

7. An electrical engineering cable protection device according to claim 1, characterized in that: two equal fixedly connected with drain pipe (26) of protection tube (1) downside, equal fixed mounting has filter (25) in two drain pipes (26).