A cable joint protection structure for electric power engineering

Abstract

The present invention belongs to the technical field of electric power engineering, and specifically relates to a cable joint protection structure for electric power engineering, the cable joint protection structure comprising: two junction boxes with the same structure and symmetrically arranged at the cable joint, each junction box is provided with protection components on both sides, and each protection component comprises: a torsional power mechanism, a power conversion mechanism, an anti-twist mechanism and a transverse push mechanism; the cable joint protection structure provided by the present invention is used for protecting the positions where cables are connected to each other in electric power engineering, four groups of protection components with the same structure are arranged on the two junction boxes, so that the connection can be protected after the cables are connected, the amplitude of the reciprocating swing and torsion of the cables is reduced, the degree of wear of the cables is reduced, and the service life of the cables is improved. At the same time, the strength of the cable connection structure can be improved, the phenomenon of mutual separation of the cables due to torsion can be avoided, and the reliability of the cable joint can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power engineering, and in particular relates to a cable joint protection structure used in electric power engineering. Background Art

[0002] According to the Chinese utility model patent with publication number CN220857612U, the patent provides a cable connector protection box, which drives the threaded rod to rotate to press the sleeve and the pressure plate downward. The sliding sleeves arranged on both sides of the pressure plate will be stably pressed down to the cable surface through the sliding rods fixed on both sides of the top threaded rod inside the upper box, thereby achieving a stable fixing effect, preventing the cable from loosening after being dragged out of its protection box, thereby improving the protection effect of the protection box, and the use of the pressure plate is simple and quick.

[0003] However, cables are usually installed at high altitudes during actual construction. After being installed at high altitudes, the cables are not in a straight state and are prone to swaying under the action of wind. Since the wiring protection box is fixed on the cable rack, there will be a certain amount of friction between the cable and the connection with the wiring protection box after the cable sways. After a long period of friction, the insulation layer of the cable will wrinkle, loosen, and fall off, affecting the insulation performance of the cable and may even damage the wire core, affecting the service life of the cable and the reliability of the connection, and there are certain safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a cable joint protection structure for power engineering to solve the problem proposed in the above background technology that during the installation and use of cables, wind force may cause the cables to swing, thereby generating friction with the connection of the cable protection box, and ultimately affecting the service life of the cables.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A cable joint protection structure for electric power engineering, comprising two junction boxes with the same structure and symmetrically arranged at the cable joint, and the interiors of the two junction boxes are hollow structures, and the cable joint protection structure also includes:

[0007] The protection components are configured in four groups and have the same structure, wherein the two groups of the protection components on the left and right sides are symmetrically arranged on both sides of any junction box, and each group of the protection components includes:

[0008] A torsion power mechanism is arranged outside the junction box, the torsion power mechanism includes a semicircular ring, the semicircular ring is tightly buckled on the outer surface of the cable, and moves with the twisting of the cable, in addition, an arc plate is fixedly installed on one side of the semicircular ring adjacent to the junction box, an arc ring is arranged at one end of the arc plate, and when the cable is twisted, the arc ring slides in an arc groove preset inside the junction box;

[0009] A power conversion mechanism, comprising a rack portion provided on the surface of the arc plate, and the rack portion moves with the arc plate. In addition, the power conversion mechanism also includes a rotating shaft penetrating the side wall of the junction box, one end of the rotating shaft is connected to a rotating gear, the rotating gear is meshed with the rack portion, and the other end of the rotating shaft is connected to an offset rotating disk, and the torsional power of the rack portion is transmitted to the rotating shaft through the rotating gear, and then converted into an eccentric rotational motion of the offset rotating disk;

[0010] The anti-torsion mechanism comprises a movable frame sleeved on the outer surface of the circumference of the offset rotating disk, a damping rod is provided at the bottom of the movable frame, and a fixed sleeve is provided at the end of the damping rod, and a buffer spring is also sleeved on the outer wall of the damping rod, one end of the buffer spring is connected to the movable frame, and the other end is connected to the fixed sleeve, and the fixed sleeve is in contact with the surface of the cable. In the anti-torsion mechanism, the eccentric rotational motion of the offset rotating disk is converted into a vertical motion of the movable frame squeezing the damping rod and the buffer spring, and the torsional power is offset and slowed down by the reaction force of the damping rod and the buffer spring, and the cable is compressed by the fixed sleeve;

[0011] The horizontal pushing mechanism comprises a group of positioning rods arranged parallel to one side of the movable frame in the horizontal direction, wherein the group of positioning rods is slidably connected to a mounting rod through a movable sleeve, the mounting rod is fixed to one end of the bending rod, the other end of the bending rod is connected to an arc sleeve through an elastic component, and the arc sleeve fits the surface of the cable. In addition, the horizontal pushing mechanism also comprises a guide sleeve partially sleeved on the outer surface of the bending rod, the guide sleeve is fixedly installed on the inner wall of the junction box through the mounting frame, and when the group of positioning rods moves vertically downward following the movable frame, the bending rod moves horizontally in a direction away from the anti-torsion mechanism while moving vertically downward due to the guiding effect of the guide sleeve;

[0012] Based on the above structure, when the two junction boxes are symmetrically installed at the cable joint, the cable joint is located at the center of the four horizontal pushing mechanisms.

[0013] Preferably, the two junction boxes are provided with sealing rings at positions contacting the cables.

[0014] Preferably, each semicircular ring in the torsion power mechanism located outside the upper junction box is configured as a first semicircular ring, and the first semicircular ring is provided with an anti-slip pad on the contact surface with the cable. In addition, each semicircular ring in the torsion power mechanism located outside the lower junction box is configured as a second semicircular ring, and the second semicircular ring is also provided with an anti-slip pad on the contact surface with the cable. Based on the above structure, the first semicircular ring and the second semicircular ring are installed on the outer wall of the cable through a connecting component.

[0015] Furthermore, the connection assembly includes an L-shaped limit rod, the L-shaped limit rod is composed of a vertical portion and a horizontal portion connected in one piece, and a positioning block is also provided on the horizontal portion;

[0016] In addition, the connection assembly further comprises a group of first mounting blocks symmetrically arranged on both sides of the first semicircular ring, the vertical portion is slidably sleeved in each of the first mounting blocks, and a return spring is sleeved on the vertical portion, one end of the return spring is fixedly connected to the top end of the vertical portion, and the other end of the return spring is fixedly connected to the upper surface of the first mounting block;

[0017] Furthermore, the connecting assembly also includes a group of second mounting blocks symmetrically arranged on both sides of the second semicircular ring, each of the second mounting blocks is provided with a sliding groove matching the vertical portion, and the width of the sliding groove is adapted to the width of the horizontal portion. At the same time, a positioning groove adapted to the positioning block is provided at the bottom of each of the second mounting blocks.

[0018] Preferably, in the anti-torsion mechanism of any protection component, a group of guide blocks are symmetrically provided on both sides of the movable frame, each guide block is slidably connected to a guide rod inside, one end of the guide rod is connected to the inner wall of the junction box, and the other end is provided with a limit block.

[0019] Preferably, in the horizontal pushing mechanism of any one of the protection components, the elastic component includes a sliding rod, one end of the sliding rod is embedded in one end of the bending rod through a telescopic spring, the other end of the sliding rod is slidably connected to a support rod, the support rod is rotatably connected between a set of fixed blocks preset on the arc sleeve, and the extension direction of the support rod coincides with the axial direction of the cable, on this basis, an extrusion spring is also sleeved on the surface of the support rod, with the sliding rod as the boundary, the extrusion spring is located on the side of the support rod away from the damping rod, and one end of the extrusion spring is connected to the fixed block, and the other end is connected to the sliding rod.

[0020] The beneficial effects of the present invention are:

[0021] Generally speaking, the cable joint protection structure is used to protect the connection points of cables in power engineering. Four groups of protection components with the same structure are arranged on the two junction boxes, so that the connection points can be protected after the cables are connected, which reduces the amplitude of the reciprocating swing and torsion of the cables, reduces the degree of cable wear, and improves the service life of the cables. At the same time, it can also improve the strength of the cable connection structure, avoid the phenomenon of cable torsion and separation, and improve the reliability of the cable joints.

[0022] Specifically, the present invention utilizes a torsional power mechanism in a protection component to capture the torsional motion of the cable, and then utilizes a power conversion mechanism to convert the torsional motion of the cable into the eccentric rotational motion of the offset turntable, and then utilizes a movable frame that is slidably sleeved on the circumferential outer surface of the offset turntable to squeeze the damping rod and the buffer spring. Under the reverse force of the damping rod and the buffer spring, the fixed sleeve presses the cable, and at the same time, the squeezing motion of the movable frame is slowed down, thereby slowing down the torsional amplitude of the semicircular ring, and finally slowing down the torsional amplitude of the cable, reducing the degree of cable wear, and improving the service life of the cable.

[0023] In addition, the present invention also provides a horizontal pushing mechanism associated with the movable frame in the protection component. When the cable is twisted and the movable frame moves in the direction close to the cable, the movable frame drives the bending rod to move vertically downward and horizontally away from the anti-torsion mechanism, thereby driving the arc sleeve to press the cable while providing the cable with a thrust toward the cable joint, thereby preventing the cables from detaching from each other and improving the reliability of the cable joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a front view structural schematic diagram of the present invention in an installed state;

[0026] Figure 2 It is a front view schematic cross-sectional view of the structure of the present invention in an installed state;

[0027] Figure 3 It is a schematic diagram of the local installation structure of the protection component in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the connection component in the present invention in an intermediate state;

[0029] Figure 5It is a structural schematic diagram of the connection assembly in the present invention in a mating state;

[0030] Figure 6 for Figure 5 A schematic diagram of the local enlarged structure at point A in the middle;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of some protection components in the present invention;

[0032] Figure 8 for Figure 7 A schematic diagram of the local enlarged structure at B in the middle;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the bending rod in the present invention;

[0034] Fig.10 for Fig. 9 Schematic diagram of the local enlarged structure at point D in the middle. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In this technical solution, if Figure 1-5As shown, a cable joint protection structure for power engineering includes two junction boxes 1 with the same structure and symmetrically arranged at the cable joint C, and the interiors of the two junction boxes 1 are hollow structures. The two junction boxes 1 are provided with sealing rings 101 at the positions in contact with the cables. The cable joint protection structure also includes: protection components 2. In the present application, the protection components 2 are configured in four groups and have the same structure, wherein the two groups of protection components 2 on the left and right sides are symmetrically arranged on both sides of any junction box 1.

[0038] like Figure 3 As shown, each set of protection components 2 includes: a torsion power mechanism 3, a power conversion mechanism 4, an anti-twist mechanism 5 and a transverse push mechanism 6.

[0039] Among them, Figure 1 , Figure 3 , Figure 5 As shown, the torsion power mechanism 3 is arranged outside the junction box 1, and the torsion power mechanism 3 includes a semicircular ring, which is tightly buckled on the outer surface of the cable and moves with the torsion of the cable.

[0040] Based on the technical solution, each semicircular ring in the torsion power mechanism 3 located outside the upper junction box 1 is configured as a first semicircular ring 301; each semicircular ring in the torsion power mechanism 3 located outside the lower junction box 1 is configured as a second semicircular ring 302. In addition, an arc plate 304 is fixedly installed on one side of each semicircular ring adjacent to the junction box 1, and an arc ring 305 is provided at one end of the arc plate 304. When the cable is twisted, the arc ring 305 slides in the arc groove preset inside the junction box 1, such as Figure 3 shown.

[0041] On this basis, if Figure 4 As shown, the first semicircular ring 301 and the second semicircular ring 302 are both provided with anti-slip pads 303 on the contact surfaces with the cable, and the first semicircular ring 301 and the second semicircular ring 302 are mounted on the outer wall of the cable through the connecting component 7.

[0042] The connecting assembly 7 includes an L-shaped limiting rod, which is composed of a vertical portion 701 and a horizontal portion 702 connected in one piece. A positioning block 703 is also provided on the horizontal portion 702. Figure 4-6 As shown; in addition, the connecting component 7 also includes a group of first mounting blocks 704 symmetrically arranged on both sides of the first semicircular ring 301, and each first mounting block 704 is slidably sleeved with a vertical portion 701. In addition, a return spring 705 is also sleeved on the vertical portion 701, and one end of the return spring 705 is fixedly connected to the top of the vertical portion 701, and the other end of the return spring 705 is fixedly connected to the upper surface of the first mounting block 704.

[0043] In addition, the connecting component 7 also includes a group of second mounting blocks 706 symmetrically arranged on both sides of the second semicircular ring 302, each second mounting block 706 is provided with a sliding groove 707 that matches the vertical portion 701, and the width of the sliding groove 707 is adapted to the width of the horizontal portion 702. At the same time, a positioning groove 708 adapted to the positioning block 703 is provided at the bottom of each second mounting block 706.

[0044] Based on the above embodiment, the torsion power mechanism 3 moves along with the torsion of the cable, and is used to fit the two junction boxes 1 on the cable. During installation and use, when the first semicircular ring 301 and the second semicircular ring 302 are fitted on the outer wall of the cable, the horizontal portion 702 is in the opening position of the sliding groove 707, and its state is as follows: Figure 4 As shown, at this time, the L-shaped limit rod can be made to slide in the sliding groove 707, and the return spring 705 can be compressed by the L-shaped limit rod until the horizontal portion 702 leaves the sliding groove 707; then the L-shaped limit rod is rotated with the vertical portion 701 as the axis, so that the horizontal portion 702 is rotated to the position where the positioning block 703 corresponds to the positioning groove 708; then the L-shaped limit rod is released, and the return spring 705 releases the elastic force to drive the L-shaped limit rod to move until the positioning block 703 matches the positioning groove 708, and its state is as shown in FIG. Figure 5 As shown, the first semicircular ring 301 and the second semicircular ring 302 are then limited and fixed, which not only ensures the convenience of installation of each semicircular ring, but also improves the reliability of the use of the junction box 1.

[0045] In this technical solution, if Figure 3 , Figure 7 As shown, the power conversion mechanism 4 includes a rack portion 401 arranged on the surface of the arc plate 304, and the rack portion 401 moves with the arc plate 304. In addition, the power conversion mechanism 4 also includes a rotating shaft 402 that passes through the side wall of the terminal box 1, and one end of the rotating shaft 402 is connected to a rotating gear 403, which is meshed with the rack portion 401, and the other end of the rotating shaft 402 is connected to an offset turntable 404.

[0046] Based on the above embodiment, the offset rotary disk 404 is located inside the junction box 1 , and the power conversion mechanism 4 transmits the torsional power of the rack portion 401 to the rotating shaft 402 by rotating the gear 403 , thereby converting it into the eccentric rotational motion of the offset rotary disk 404 .

[0047] like Figure 3As shown in the orientation, taking the protection component 2 on the right side of the junction box 1 configured on the cable as an example, it is more important that the present invention is provided with an anti-torsion mechanism 5 in the protection component 2, and the anti-torsion mechanism 5 includes a movable frame 501 sleeved on the outer surface of the circumference of the offset rotating disk 404, and a group of guide blocks 504 are symmetrically arranged on both sides of the movable frame 501, and each guide block 504 is slidably connected to the inside of a guide rod 505, one end of the guide rod 505 is connected to the inner wall of the junction box 1, and the other end is provided with a limit block 506; in addition, as shown Figure 8 As shown, a damping rod 502 is provided at the bottom of the movable frame 501, and a fixing sleeve 503 is provided at the end of the damping rod 502, and the fixing sleeve 503 fits the surface of the cable. On this basis, a buffer spring 507 is also provided on the outer wall of the damping rod 502, and one end of the buffer spring 507 is connected to the movable frame 501, and the other end is connected to the fixing sleeve 503.

[0048] Based on the above embodiment, in the anti-torsion mechanism 5, the eccentric rotational motion of the offset turntable 404 is converted into the vertical motion of the movable frame 501 squeezing the damping rod 502 and the buffer spring 507. Under the reverse force of the damping rod 502 and the buffer spring 507, the fixed sleeve 503 presses the cable and slows down the squeezing action of the movable frame 501, thereby slowing down the torsion amplitude of each semicircular ring, and finally slowing down the torsion amplitude of the cable, reducing the degree of cable wear, and improving the service life of the cable.

[0049] In addition, the present invention also provides a horizontal push mechanism 6 in the protection component 2, such as Figure 3 , Figure 9-10 As shown, the horizontal pushing mechanism 6 includes a group of positioning rods 601 arranged parallel to one side of the movable frame 501 in the horizontal direction. The group of positioning rods 601 are slidably connected to a mounting rod 603 through a movable sleeve 602. The mounting rod 603 is fixed to one end of a bending rod 604. The other end of the bending rod 604 is connected to an arc sleeve 605 through an elastic component 8. The arc sleeve 605 fits the surface of the cable.

[0050] In addition, if Figure 9-10 As shown, the elastic component 8 includes a sliding rod 801, one end of which is embedded in one end of the bending rod 604 through a telescopic spring 802, and the other end of the sliding rod 801 is slidably connected to a support rod 803, and the support rod 803 is rotatably connected between a set of fixed blocks 804 preset on the arc sleeve 605, and the extension direction of the support rod 803 coincides with the axial direction of the cable, on this basis, the surface of the support rod 803 is also sleeved with an extrusion spring 805, with the sliding rod 801 as the boundary, the extrusion spring 805 is located on the side of the support rod 803 away from the mounting rod 603, and one end of the extrusion spring 805 is connected to the fixed block 804, and the other end is connected to the sliding rod 801. In addition, as Figure 3As shown, the horizontal pushing mechanism 6 further includes a guide sleeve 606 partially sleeved on the outer surface of the bending rod 604 , and the guide sleeve 606 is fixedly mounted on the inner wall of the junction box 1 through a mounting frame 607 .

[0051] Based on the above embodiment, when a group of positioning rods 601 moves vertically downward following the movable frame 501, through the guiding effect of the guide sleeve 606, the bending rod 604 moves vertically downward and horizontally away from the anti-torsion mechanism 5. At this time, when the arc sleeve 605 is in contact with the surface of the cable, the telescopic spring 802 is squeezed, and its reaction force presses the cable in the vertical direction; at the same time, the squeezing spring 805 is also compressed in the horizontal direction, and its reaction force pushes the cable horizontally toward the cable connector C in the horizontal direction, so as to prevent the cables from detaching from each other and improve the reliability of the cable connector.

[0052] In the present technical solution, based on the above structure, when two junction boxes 1 are symmetrically installed at the joint of the cable, the joint of the cable is located at the center position of the four horizontal pushing mechanisms 6 .

[0053] Generally speaking, the cable structure joint protection structure is used to protect the connection positions of cables in power engineering. Four groups of protection components 2 with the same structure are arranged on two junction boxes 1, so that the connection points can be protected after the cables are connected, reducing the amplitude of the reciprocating swing and torsion of the cables, reducing the degree of cable wear, and improving the service life of the cables. At the same time, the strength of the cable connection structure can be improved, avoiding the phenomenon of cable torsion and separation, and improving the reliability of the cable joints.

[0054] Contents not described in detail in this specification, such as the offset turntable 404, the damping rod 502, etc., are all prior arts known to those skilled in the art, and only their working principles and effects are introduced for use.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable joint protection structure for electric power engineering, comprising two junction boxes with the same structure and symmetrically arranged at the cable joint, and the interiors of the two junction boxes are hollow structures, characterized in that: The cable joint protection structure also includes: The protection components are configured in four groups and have the same structure, wherein the two groups of the protection components on the left and right sides are symmetrically arranged on both sides of any junction box, and each group of the protection components includes: A torsion power mechanism is arranged outside the junction box, and the torsion power mechanism includes a semicircular ring, which is tightly buckled on the outer surface of the cable and moves with the twisting of the cable. In addition, an arc plate is fixedly installed on one side of the semicircular ring adjacent to the junction box, and an arc ring is arranged at one end of the arc plate; A power conversion mechanism, comprising a rack portion provided on the surface of the arc plate, and the rack portion moves with the arc plate. In addition, the power conversion mechanism also includes a rotating shaft penetrating the side wall of the junction box, one end of the rotating shaft is connected to a rotating gear, the rotating gear is meshed with the rack portion, and the other end of the rotating shaft is connected to an offset rotating disk, and the torsional power of the rack portion is transmitted to the rotating shaft through the rotating gear, and then converted into an eccentric rotational motion of the offset rotating disk; The anti-torsion mechanism comprises a movable frame sleeved on the outer surface of the circumference of the offset turntable, a damping rod is provided at the bottom of the movable frame, and a fixed sleeve is provided at the end of the damping rod, and a buffer spring is sleeved on the outer wall of the damping rod, one end of the buffer spring is connected to the movable frame, and the other end is connected to the fixed sleeve, and the fixed sleeve is in contact with the surface of the cable; The horizontal pushing mechanism includes a group of positioning rods arranged parallel to one side of the movable frame in the horizontal direction. The group of positioning rods is slidably connected to a mounting rod through a movable sleeve. The mounting rod is fixed to one end of the bending rod. The other end of the bending rod is connected to an arc sleeve through an elastic component. The arc sleeve fits the surface of the cable. In addition, the horizontal pushing mechanism also includes a guide sleeve partially sleeved on the outer surface of the bending rod. The guide sleeve is fixedly installed on the inner wall of the junction box through the mounting frame.

2. A cable joint protection structure for electric power engineering according to claim 1, characterized in that: The two junction boxes are provided with sealing rings at positions contacting with the cables.

3. A cable joint protection structure for electric power engineering according to claim 1, characterized in that: Each semicircular ring in the torsion power mechanism located outside the upper junction box is configured as a first semicircular ring, and the first semicircular ring is provided with an anti-slip pad on the contact surface with the cable. In addition, each semicircular ring in the torsion power mechanism located outside the lower junction box is configured as a second semicircular ring, and the second semicircular ring is also provided with an anti-slip pad on the contact surface with the cable. Based on the above structure, the first semicircular ring and the second semicircular ring are installed on the outer wall of the cable through a connecting component.

4. A cable joint protection structure for electric power engineering according to claim 3, characterized in that: The connecting assembly comprises an L-shaped limiting rod, the L-shaped limiting rod is composed of a vertical portion and a horizontal portion connected in one piece, and a positioning block is also provided on the horizontal portion; In addition, the connection assembly further comprises a group of first mounting blocks symmetrically arranged on both sides of the first semicircular ring, the vertical portion is slidably sleeved in each of the first mounting blocks, and a return spring is sleeved on the vertical portion, one end of the return spring is fixedly connected to the top end of the vertical portion, and the other end of the return spring is fixedly connected to the upper surface of the first mounting block; The connecting assembly also includes a group of second mounting blocks symmetrically arranged on both sides of the second semicircular ring, each of the second mounting blocks is provided with a sliding groove matching the vertical portion, and the width of the sliding groove is adapted to the width of the horizontal portion. At the same time, a positioning groove adapted to the positioning block is provided at the bottom of each of the second mounting blocks.

5. The cable joint protection structure for electric power engineering according to claim 1, characterized in that: In the anti-torsion mechanism of any protection component, a group of guide blocks are symmetrically provided on both sides of the movable frame, and a guide rod is slidably connected inside each guide block. One end of the guide rod is connected to the inner wall of the junction box, and the other end is provided with a limit block.

6. A cable joint protection structure for electric power engineering according to claim 1, characterized in that: In the horizontal pushing mechanism of any protection component, the elastic component includes a sliding rod, one end of the sliding rod is embedded in one end of the bending rod through a telescopic spring, and the other end of the sliding rod is slidably connected to a support rod, and the support rod is rotatably connected between a set of fixed blocks preset on the arc sleeve, and the extension direction of the support rod coincides with the axial direction of the cable, on this basis, an extrusion spring is also sleeved on the surface of the support rod, with the sliding rod as the boundary, the extrusion spring is located on the side of the support rod away from the damping rod, and one end of the extrusion spring is connected to the fixed block, and the other end is connected to the sliding rod.

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