CN118157046A - Protective device for electrical engineering cable - Google Patents

Abstract

The invention discloses a protection device for an electrical engineering cable, which belongs to the technical field of electrical equipment protection, and comprises a plurality of knuckles with hollow structures and connecting sleeves, wherein the knuckles are sequentially hinged with the connecting sleeves at intervals in a rotating way to form a protection structure for the electrical engineering cable to pass through, and the knuckles are fixedly connected with the adjacent connecting sleeves through fixed connecting assemblies. The cable protection device adopts the connection mode of the connecting sleeve and the steering knuckle through the spherical barrel, and the connection direction of the connecting barrel and the steering knuckle can be conveniently and quickly adjusted according to the trend of the cable, so that the adjusted protection device accords with the trend of the cable, and compared with the traditional mode that the cable is sleeved on the cable through a plurality of cable sleeves, the cable protection device not only can form good protection, but also can improve the arrangement appearance and the field management capability of the cable.

Description

Protective device for electrical engineering cable

Technical Field

The invention belongs to the technical field of electrical equipment protection, and particularly relates to a protection device for an electrical engineering cable.

Background

The electric engineering is an engineering field for researching the production, transmission, distribution, use and control technologies and equipment of electric energy, and because of the continuous innovative development of scientific technology, the electric engineering and the automation technology thereof have closer relation with the life and production of human beings, and the electric engineering and the automation technology thereof have wider application in human activities. At present, the electrical engineering and the automation technology thereof are continuously perfected, the application applicability and the safety of the automation technology are further consolidated, and the method has important significance for promoting the development of the electrical engineering in China.

When the external power is introduced into the room, two general modes are adopted: ① Introducing the cable into the room through the subsurface; ② The cable is suspended and pulled into the room. When the suspended wire pulling mode is adopted for wiring, the cable is exposed in the external environment for a long time, so that the cable is exposed to light and rain for a long time, and the aging and damage of the cable can be accelerated. In order to protect suspended cables, a wire pipe is usually sleeved on the cable, so that the cable is protected. However, when the wire tube is used for protecting the cable, as the wire tube has a certain weight, the weight can act on the cable, so that the cable can fall down, the tensile force born by the wiring positions at the two ends of the cable is increased, and the problem that the wire head falls off easily occurs; meanwhile, the wire tube cannot be bent according to the bending angle of the cable, and a plurality of wire tube sleeves are generally adopted to be sleeved on the bent cable, and as the wire tubes are not connected, part of the cable is still exposed outside.

Disclosure of Invention

The invention solves the technical problems that: aiming at the problems that in the prior art, a wire tube is adopted to protect a cable, the wire heads are easy to fall off due to the increase of the tensile force born by the wiring positions of the two ends of the cable, part of the cable is exposed due to the fact that a plurality of wire sleeves are arranged on the cable in a sleeved mode in the bending and wiring process of the cable, the invention provides a protection device for an electric engineering cable.

The technical scheme is as follows: the invention relates to a protection device for an electrical engineering cable, which comprises a plurality of knuckles with hollow structures and connecting sleeves, wherein the knuckles are sequentially hinged with the connecting sleeves at intervals in a rotating way to form a protection structure for the electrical engineering cable to pass through, and the knuckles are fixedly connected with the adjacent connecting sleeves through fixed connecting assemblies.

Preferably, the steering knuckle comprises a connecting sleeve, and two ends of the connecting sleeve are respectively bent inwards to form spherical end holes;

the connecting sleeve comprises a pipe body, two ends of the pipe body are respectively provided with a spherical cylinder, and the spherical cylinders are correspondingly rotatably accommodated in the spherical end holes.

Preferably, the peripheries of the two ends of the connecting sleeve are respectively provided with an annular chute;

A limiting ring is arranged on the inner side of the spherical cylinder on the pipe body, and a positioning groove is formed in the limiting ring along the circumferential direction of the limiting ring;

The fixed connection assembly comprises a connection part, a first connection assembly and a second connection assembly, wherein the positions of the first connection assembly and the second connection assembly are adjustable, the positions of the first connection assembly and the second connection assembly are respectively arranged on the connection part, the first connection assembly is correspondingly clamped in the annular chute, and the second connection assembly is correspondingly clamped in the positioning groove.

Preferably, the connecting part is a connecting ring, a C-shaped ring groove is formed on the connecting ring along the circumference of the connecting ring, and a supporting part is formed at the opening of the C-shaped ring groove by the connecting ring;

the first connecting assembly comprises a first bolt and a first T-shaped block, the first bolt is movably connected in the supporting part, the first T-shaped block is in threaded connection with the first bolt, and the big end of the first T-shaped block is clamped in the annular chute;

the second connecting assembly comprises a second bolt which is connected in the C-shaped annular groove in a sliding mode and a second T-shaped block which is connected with the second bolt in a threaded mode, and the big end of the second T-shaped block is clamped in the positioning groove.

Preferably, the end part of the screw rod of the second bolt is rotationally connected with an arc-shaped clamping plate, and the arc-shaped clamping plate is correspondingly clamped in the positioning groove.

Preferably, a plurality of limiting holes are uniformly distributed on one side of the inner side wall and the outer side wall of the C-shaped ring groove of the connecting ring, which corresponds to the second T-shaped block;

And a limiting column which can be inserted into the limiting hole is arranged at the small end of the second T-shaped block.

Preferably, the annular chute and the positioning groove are inverted T-shaped grooves, and the depth of a bottom annular groove of the inverted T-shaped groove of the annular chute is larger than the thickness of the large end of the first T-shaped block;

the depth of the bottom ring groove of the inverted T-shaped groove of the positioning groove is larger than the total thickness of the large end of the second T-shaped block and the arc-shaped clamping plate.

Preferably, a horn-shaped sealing cover is sleeved between the inner side of the spherical cylinder and the limiting ring, and the opening end of the horn-shaped sealing cover can be correspondingly buckled outside the spherical end hole.

Preferably, a plurality of mounting blocks are respectively arranged on the circumference of the spherical cylinder arranged at the two ends of the outermost side of the protection device.

Preferably, the protection device further comprises a cleaning assembly, the cleaning assembly comprises a driving ring sleeve rotatably connected to the connecting sleeve, and balls which are in sliding contact with the connecting sleeve are arranged on the inner periphery of the driving ring sleeve;

A plurality of cleaning scraping strips are uniformly arranged on the end face of one side of the driving ring sleeve, far away from the spherical cylinder, in the circumferential direction, and the cross sections of the cleaning scraping strips are triangular;

A plurality of windshields are uniformly arranged on the periphery of the driving ring sleeve, and leak holes are uniformly arranged on the windshields.

Compared with the prior art, the invention has the following beneficial effects:

1. The cable protection device adopts the connection mode of the connecting sleeve and the steering knuckle through the spherical barrel, so that the connection direction of the connecting barrel and the steering knuckle can be conveniently and quickly adjusted according to the trend of the cable, the adjusted protection device accords with the trend of the cable, and compared with the existing protection device which is sleeved on the cable through a plurality of cable sleeves, the cable protection device not only can form good protection, but also can improve the arrangement appearance and the field management capability of the cable;

2. the protection device can be correspondingly fixed on the wiring ends at the two ends of the cable after the assembly is completed, so that the protection device is integrally suspended, the cable is effectively supported, the two ends of the cable are prevented from falling off due to dead weight, and the electricity safety of the cable is improved;

3. The protection device is provided with a cleaning component in cooperation with the connecting sleeve, and the wind power or rain drives the windshield to drive the sleeve replacement to rotate, so that the cleaning scraping strip is driven to rotate to clean accumulated dust of the connecting sleeve.

Drawings

FIG. 1 is a schematic view of a connection structure of a protection device according to the present invention;

FIG. 2 is an exploded view of the knuckle and connecting sleeve connection of FIG. 1;

FIG. 3 is a schematic view of a connection between the knuckle and the connection sleeve of FIG. 1;

FIG. 4 is a schematic view of the knuckle and coupling sleeve of FIG. 1 in another coupled state;

FIG. 5 is a cross-sectional view of the knuckle and connection sleeve of FIG. 1 in an axially structured configuration thereof;

FIG. 6 is a fragmentary structural exploded view of the knuckle and connecting sleeve of FIG. 1;

FIG. 7 is a schematic structural diagram of the fixing connection assembly in FIGS. 1-4;

FIG. 8 is a schematic view of a first view of the stationary connection assembly of FIG. 7;

FIG. 9 is a schematic view of a second view of the stationary connection assembly of FIG. 7;

FIG. 10 is a schematic view of the structure of the fixed connection assembly A in FIG. 5;

FIG. 11 is a schematic view of the structure of the fixed connection assembly B in FIG. 5;

fig. 12 is a schematic structural view of the fixed connection assembly C in fig. 9.

Reference numerals: 100. a protective device; 1. a knuckle; 11. a connecting sleeve; 12. a spherical end hole; 13. an annular chute; 2. a connection sleeve; 21. a tube body; 22. a spherical cylinder; 23. a limiting ring; 24. a positioning groove; 25. a horn-shaped seal cover; 26. a wire through hole; 27. a mounting block; 3. a fixed connection assembly; 31. a connection part; 311. a support part; 312. a C-shaped ring groove; 313. a limiting hole; 32. a first connection assembly; 321. a first bolt; 322. a first T-block; 33. a second connection assembly; 331. a second bolt; 332. a second T-block; 333. an arc-shaped clamping plate; 334. a limit column; 4. cleaning the assembly; 41. driving the collar; 42. cleaning the scraping strip; 43. a wind shield; 44. and (5) a leak hole.

Detailed Description

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 12. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.

As shown in fig. 1 to 5, in an embodiment of the present invention, a protection device for an electrical engineering cable 100 includes a plurality of knuckles 1 and connecting sleeves 2 having hollow structures, the knuckles 1 and the connecting sleeves 2 are sequentially hinged at intervals to form a protection structure for the electrical engineering cable, and the knuckles 1 and the adjacent connecting sleeves 2 are fixedly connected by a fixed connection assembly 3. Specifically, the steering knuckle 1 comprises a connecting sleeve 11, and two ends of the connecting sleeve 11 are respectively bent inwards to form spherical end holes 12; the connecting sleeve 2 comprises a tube body 21, two ends of the tube body 21 are respectively provided with a spherical tube 22, the spherical tube 22 is correspondingly and rotatably accommodated in the spherical end hole 12, and the end part of the spherical tube 22 is provided with a wire passing hole 26 for a cable to pass through. When wiring, the staff passes the cable from the inner chamber of knuckle 1, adapter sleeve 2 in proper order earlier, finally makes the cable be located protector 100, and the both ends of cable are worn out from protector both ends, and the staff is according to the line trend adjustment protection machanism's of cable knuckle 1 and adapter sleeve 2's connection direction and position afterwards to satisfy the convenient adjustment of cable wiring direction.

In the embodiment shown in fig. 6 to 10, annular sliding grooves 13 are respectively arranged at the outer circumferences of two ends of the connecting sleeve 11, a limiting ring 23 is arranged on the inner side of the spherical cylinder 22 on the pipe body 21, a positioning groove 24 is formed in the limiting ring 23 along the circumferential direction of the limiting ring, and the annular sliding grooves 13 and the positioning groove 24 are inverted T-shaped grooves. The fixed connection assembly 3 comprises a connection part 31, a first connection assembly 32 and a second connection assembly 33, wherein the positions of the first connection assembly 32 and the second connection assembly 33 are respectively arranged on the connection part 31, the first connection assembly 32 is correspondingly clamped in the annular chute 13, and the second connection assembly 33 is correspondingly clamped in the positioning groove 24. Specifically, the connection portion 31 may be a connection ring structure, in which a C-shaped ring groove 312 is formed along the circumference of the connection ring, and a support portion 311 is formed at the opening of the C-shaped ring groove 312. The first connecting component 32 comprises a first bolt 321 which is movably connected in the supporting part 311 and a first T-shaped block 322 which is in threaded connection with the first bolt 321, the big end of the first T-shaped block 322 is clamped in the annular chute 13, and the depth of the bottom annular groove of the inverted T-shaped groove of the annular chute 13 is larger than the thickness of the big end of the first T-shaped block 322, so that the first T-shaped block 322 can be movably connected in the annular chute 13. The second connecting assembly 33 comprises a second bolt 331 and a second T-shaped block 332, wherein the second bolt 331 is slidably connected in the C-shaped annular groove 312, the second T-shaped block 332 is in threaded connection with the second bolt 331, the arc-shaped clamping plate 333 is rotationally connected to the end part of the screw rod of the second bolt 331, the large end of the second T-shaped block 332 and the arc-shaped clamping plate 333 are clamped in the positioning groove 24, the depth of the bottom annular groove of the inverted T-shaped groove of the positioning groove 24 is larger than the total thickness of the large end of the second T-shaped block 332 and the arc-shaped clamping plate 333, and the second T-shaped block 332 and the arc-shaped clamping plate 333 are movably connected in the positioning groove 24.

In the preferred embodiment shown in fig. 11 to 12, a plurality of limiting holes 313 are uniformly distributed on the inner and outer side walls of the C-shaped ring groove 312 of the connecting ring and on the corresponding side of the second T-shaped block 332; the small end of the second T-shaped block 332 is provided with a limiting column 334 which can be inserted into the limiting hole 313, when the second bolt 331 is screwed with the second T-shaped block 332 for positioning, the limiting column 334 of the small end of the second T-shaped block 332 can be correspondingly inserted into the limiting hole 313, so that the relative positions of the second connecting component 33 and the connecting part 31 are fixed, and the situation that the adjacent connecting sleeve 2 and the knuckle 1 rotate after the fixed connecting component 3 is fixed is avoided.

In the preferred embodiment shown in fig. 5 to 6, a horn-shaped sealing cover 25 is sleeved between the inner side of the spherical cylinder 22 of the pipe body 21 and the limiting ring 23, the opening end of the horn-shaped sealing cover 25 can be correspondingly buckled outside the spherical end hole 12, after the spherical end hole 12 of the steering knuckle 1 is connected in place with the spherical cylinder 22 of the connecting sleeve 2, the opening end of the horn-shaped sealing cover 25 can be correspondingly buckled on the spherical end hole 12, and the joint of the spherical cylinder 22 and the spherical end hole 12 is sealed and protected, so that rainwater is prevented from entering the pipe body 21 of the connecting sleeve 11 or the connecting sleeve in rainy and snowy weather.

In the preferred embodiment shown in fig. 1-2, the two ends of the outermost side of the protection device 100 generally adopt a connecting sleeve 2 as a connecting structure with a wall or a bracket, and the length of the connecting sleeve can be selected according to requirements, that is, the length of the connecting sleeve 2 can be of various types, such as 500mm, 1000mm, 2500mm, 5000mm, and the like, and can be selected according to requirements. The spherical barrels 22 arranged on the outer side of the connecting sleeve 2 at the outer end are respectively provided with a plurality of mounting blocks 27 in the circumferential direction, after all steering knuckles 1 and the connecting sleeve 2 are fixedly locked through the fixed connecting assembly 3, all steering knuckles 1 and connecting sleeves 2 which are adjusted in the horizontal direction and the vertical direction can form an integrated structure, then workers lift the integrated protection device, and the mounting blocks 27 on the spherical barrels 22 at the two ends of the protection device are mounted on the wiring ends at the two sides, so that the integrated protection device 100 conforming to the trend of cables is fixedly suspended, and then the two ends of the cables are respectively connected to the wiring ends at the two ends, so that the protection device 100 can support and protect the cables.

In the preferred embodiment shown in fig. 1 to 5, the protection device 100 further includes a cleaning assembly 4, the cleaning assembly 4 includes a driving collar 41 rotatably connected to the connection sleeve 2, and balls sliding against the connection sleeve 2 are disposed on the inner periphery of the driving collar 41; a plurality of cleaning scraping strips 42 are uniformly arranged on the end face of the driving ring sleeve 41, far from the spherical barrel 22, in the circumferential direction, and the cross section of each cleaning scraping strip 42 is triangular; a plurality of windshields 43 are uniformly arranged on the periphery of the driving collar 41, and weep holes 44 are uniformly arranged on the windshields 43. When the device works, because the wind shields 43 are uniformly arranged on the driving ring sleeve 41, when wind blows on the wind shields 43, the wind shields 43 can be driven to drive the driving ring sleeve 41 to rotate, the balls arranged on the inner side of the driving ring sleeve 41 can reduce friction force between the driving ring sleeve 41 and the pipe body 21, so that the driving ring sleeve 41 can rotate on the pipe body 21 more easily, the cleaning scraping strip 42 can be driven to rotate in the rotating process of the driving ring sleeve 41, and then the surface of the pipe body 21 is scraped, so that dust of the connecting sleeve 2 is scraped; in the case of rain, the water drops remaining on the connecting sleeve can also be scraped off. The wind shield 43 can adopt a spoon-shaped structure, rainwater can be accumulated in the wind shield 43, and the wind shield 43 can be driven to rotate along with the accumulation of more rainwater, so that the driving ring sleeve 41 and the cleaning scraping strip 42 can be driven to rotate, and the connecting sleeve 2 is cleaned through the cleaning scraping strip 42; since the evenly arranged weep holes 44 are formed in the wind shield 43, water drops falling into the wind shield 43 gradually flow out of the weep holes 44, so that residual water drops in the wind shield 43 are avoided, and the weight of the wind shield 43 is prevented from being increased.

The installation and adjustment method of the protection device comprises the following steps:

When the positions of the connecting sleeve 2 and the steering knuckle 1 are adjusted according to the trend of the cable, a worker rotates different connecting sleeves 2, so that a spherical cylinder 22 on the connecting sleeve 2 rotates in a spherical end hole 12 of the steering knuckle 1 for adjustment, meanwhile, the connecting sleeve 2 drives a limiting ring 23 arranged at two ends of the connecting sleeve and a second connecting assembly 33 connected with the limiting ring 23 to rotate along the axis of the connecting sleeve 2, and meanwhile, the limiting ring 23 drives a second T-shaped block 332 and a second bolt 331 to slide in a C-shaped annular groove 312, and when the adjusted directions of the connecting sleeve 2 and the steering knuckle 1 are consistent with the trend of the cable, the continuous adjustment of the connecting sleeve 2 and the steering knuckle 1 is stopped; when the positions of the connecting sleeve 2 and the steering knuckle 1 are adjusted according to the vertical trend of the cable, a worker rotates the steering knuckle 1 to enable the steering knuckle 1 to rotate and adjust along the adjacent spherical barrels 22, in the process of rotating the steering knuckle 1, the steering knuckle 1 drives the second T-shaped block 332 to rotate along the annular chute 13, meanwhile, the second bolt 331 on the second T-shaped block 332 drives the connecting ring to rotate, when the connecting ring is positioned on the front side and the rear side of the steering knuckle 1, the rotating steering knuckle 1 is stopped at the moment, then the worker downwards breaks the steering knuckle 1 to enable the steering knuckle 1 to rotate downwards in the vertical direction by taking the spherical barrels 22 as the center of a circle, when the steering knuckle 1 rotates to the limit position, then the worker downwards breaks the connecting sleeve 2 below the steering knuckle 1, the connecting sleeve 2 downwards rotates by taking the spherical barrels 22 on the connecting sleeve 2 as the center of a circle, and when the direction of the connecting sleeve 2 and the steering knuckle 1 which are adjusted in the vertical direction are consistent with the vertical direction of the cable, the connecting sleeve 2 and the steering knuckle 1 are stopped continuously.

Subsequently, a worker locks the first bolt 321 and the second bolt 331 in sequence, in the process of locking the first bolt 321, the worker rotates the first bolt 321 by using a wrench, the first bolt 321 gradually stretches into the bottom of the annular chute 13 until the first bolt 321 butts against the bottom of the annular chute 13, meanwhile, the first bolt 321 pushes the first T-shaped block 322 to gradually move upwards, so that the first T-shaped block 322 is tightly attached to the annular chute 13, the first T-shaped block 322 can be fixed in the annular chute 13, and meanwhile, the lower end of the first bolt 321 gradually stretches into the annular chute 13 supports, clamps and fixes the connecting ring, and the connecting ring is in a fixed and locked state; and then the second bolt 331 is rotated, in the process of rotating the second bolt 331, the second bolt 331 is gradually contacted with the connecting sleeve 2, and meanwhile, the second T-shaped block 332 is driven to be gradually tightly attached to the positioning groove 24 in the limiting ring 23, so that the second T-shaped block 332 can be fixed in the positioning groove 24, and meanwhile, the connecting ring can be extruded in the process of rotating the second bolt 331, so that the connecting ring can be locked and fixed again. According to the steps, the steering knuckles 1 and the connecting sleeves 2 are sequentially adjusted and fixed to enable the trend of the steering knuckles 1 and the trend of the connecting sleeves to be consistent with the trend of the cables, and the protective device 100 with an integrated structure is formed, after the integral fixing installation of the protective device 100 is completed on the wiring ends at two ends of the cables, the protective device can be integrally suspended, so that the cables passing through the protective device can be supported, the cables are prevented from increasing the tensile force born by the wiring positions at two ends of the cables due to the dead weight, and the risk of falling off of the wire ends at two ends of the cables is reduced. The adjacent connecting sleeve 2 and the steering knuckle 1 are connected through the spherical cylinder 22, the connecting sleeve 2 and the steering knuckle 1 can be adjusted according to the trend of the cable, so that the adjusted protecting device is matched with the trend of the cable, and compared with the existing technical scheme of sleeving the cable through a plurality of wire pipes, the cable can be protected, the cable arrangement appearance can be improved, and the field management capability of the cable is improved.

The foregoing is a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention and are intended to be comprehended within the scope of the present invention.

Claims (10)

1. The utility model provides a protector for electrical engineering cable, its characterized in that, protector (100) include a plurality of knuckle (1) and adapter sleeve (2) that have hollow structure, and a plurality of knuckle (1) rotate hinge connection in proper order with adapter sleeve (2) at intervals and form the protective structure that power supply engineering cable passed through, and knuckle (1) and adjacent adapter sleeve (2) pass through fixed connection subassembly (3) fixed connection.

2. The protection device for electrical engineering cables according to claim 1, characterized in that the knuckle (1) comprises a connecting sleeve (11), both ends of the connecting sleeve (11) being respectively bent inwards to form a spherical end hole (12);

the connecting sleeve (2) comprises a pipe body (21), spherical cylinders (22) are respectively arranged at two ends of the pipe body (21), and the spherical cylinders (22) are correspondingly rotatably accommodated in the spherical end holes (12).

3. The protection device for electrical engineering cables according to claim 2, characterized in that the outer circumferences of the two ends of the connecting sleeve (11) are respectively provided with an annular chute (13);

A limiting ring (23) is arranged on the inner side of the spherical cylinder (22) on the pipe body (21), and a positioning groove (24) is formed in the limiting ring (23) along the circumferential direction of the limiting ring;

the fixed connection assembly (3) comprises a connection part (31), and a first connection assembly (32) and a second connection assembly (33) which are respectively arranged on the connection part (31) and have adjustable positions, the first connection assembly (32) is correspondingly clamped in the annular chute (13), and the second connection assembly (33) is correspondingly clamped in the positioning groove (24).

4. A protection device for an electrical engineering cable according to claim 3, characterized in that the connection part (31) is a connection ring, the connection ring is provided with a C-shaped ring groove (312) along its circumference, and the connection ring forms a support part (311) at the opening of the C-shaped ring groove (312);

The first connecting assembly (32) comprises a first bolt (321) which is connected in the supporting part (311) in a moving way and a first T-shaped block (322) which is connected with the first bolt (321) in a threaded way, and the big end of the first T-shaped block (322) is clamped in the annular chute (13);

The second connecting assembly (33) comprises a second bolt (331) which is slidably connected in the C-shaped annular groove (312) and a second T-shaped block (332) which is in threaded connection with the second bolt (331), and the big end of the second T-shaped block (332) is clamped in the positioning groove (24).

5. The protection device for electrical engineering cables according to claim 4, wherein the end of the second bolt (331) is rotatably connected with an arc-shaped clamping plate (333), and the arc-shaped clamping plate (333) is correspondingly clamped in the positioning groove (24).

6. The protection device for an electrical engineering cable according to claim 4, wherein a plurality of limiting holes (313) are uniformly distributed on the inner and outer side walls of the C-shaped ring groove (312) of the connecting ring at the side corresponding to the second T-shaped block (332);

and a limiting column (334) which can be inserted into the limiting hole (313) is arranged at the small end of the second T-shaped block (332).

7. The protection device for electrical engineering cables according to claim 5, characterized in that the annular runner (13) and the positioning groove (24) are inverted "T" shaped grooves, the bottom groove depth of the inverted "T" shaped groove of the annular runner (13) being greater than the large end thickness of the first T-shaped block (322);

The depth of the bottom ring groove of the inverted T-shaped groove of the positioning groove (24) is larger than the total thickness of the large end of the second T-shaped block (332) and the arc-shaped clamping plate (333).

8. A protection device for an electrical engineering cable according to claim 3, wherein a horn-shaped sealing cover (25) is sleeved between the inner side of the spherical cylinder (22) and the limiting ring (23), and the opening end of the horn-shaped sealing cover (25) can be correspondingly buckled outside the spherical end hole (12).

9. The protection device for electrical engineering cables according to any one of claims 2 to 8, wherein a plurality of mounting blocks (27) are respectively arranged in the circumferential direction of the spherical cylinders (22) arranged at the two ends of the outermost side of the protection device (100).

10. The protection device for electrical engineering cables according to claim 9, characterized in that the protection device (100) further comprises a cleaning assembly (4), the cleaning assembly (4) comprising a driving collar (41) rotatably connected to the connection sleeve (2), the driving collar (41) being provided at its inner circumference with balls in sliding abutment with the connection sleeve (2);

A plurality of cleaning scraping strips (42) are uniformly arranged on the end face of one side of the driving ring sleeve (41) far away from the spherical cylinder (22) in the circumferential direction, and the cross section of each cleaning scraping strip (42) is triangular;

A plurality of windshields (43) are uniformly arranged on the periphery of the driving ring sleeve (41), and leak holes (44) are uniformly arranged on the windshields (43).