A cable terminal tower platform isolation device

Abstract

The present invention provides a cable terminal tower platform isolation device, which includes a first semi-circular pipe and a second semi-circular pipe, an upper support rod and a lower support rod, a warning sign, a first annular lock and a second annular lock; both the first semi-circular pipe and the second semi-circular pipe are provided with a top cover at the top end and a bottom cover at the bottom end; both the upper support rod and the lower support rod are telescopic rods; a first winding rod is arranged in the first semi-circular pipe, and a second winding rod is arranged in the second semi-circular pipe; both sides of the warning sign are connected to the first winding rod and the second winding rod respectively; the first semi-circular pipe is provided with a first concave slideway, and the second semi-circular pipe is provided with a second concave slideway; a first groove is arranged at the inner bottom of the first concave slideway and the inner bottom of the second concave slideway; the first annular lock and the second annular lock are provided with first convex rails matching the first groove. The device of the present invention can be used for the safety isolation between the live side and the de-energized side of the cable terminal tower platform, can be condensed into a cylinder, has a compact shape and small size, is convenient to carry and store, and is convenient to operate and use.

Description

Technical Field

[0001] The present invention relates to the technical field of safety equipment for cable terminal tower platforms, and particularly to an isolation device for cable terminal tower platforms. Background Art

[0002] For a cable terminal tower with a platform, its four sides are connected by a wide platform, and accessories such as cable terminal heads and lightning arresters are respectively installed on each platform surface. When carrying out work such as power outage maintenance and tests, the presence of the platform makes it very convenient for operators to move back and forth, transfer tools up and down, and place tools. However, so far, there is no good safety isolation measure between the live-side platform and the outage-side platform. When multiple circuits are powered off one by one, while the wide cable tower platform facilitates personnel work activities, it also increases the risk of operators mistakenly walking onto the live-line side platform, so there is a certain degree of potential personal safety hazard. And some current safety isolation facilities on the market, such as metal signs and straps, are either too large in size or do not meet the safety requirements in terms of material, and cannot be applied to cable tower platforms. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and propose an isolation device for cable terminal tower platforms for safety isolation on cable terminal tower platforms, so as to solve the problem that there is no good safety isolation device between the live-side platform and the outage-side platform of cable terminal tower platforms.

[0004] An isolation device for cable terminal tower platforms provided by the present invention includes: a first semi-circular tube and a second semi-circular tube that can be assembled into a circular tube, upper support rods and lower support rods that are parallel to each other, a warning sign, a first annular lock and a second annular lock; both the first semi-circular tube and the second semi-circular tube are provided with a top cover at the top end and a bottom cover at the bottom end;

[0005] Both ends of the upper support rod are respectively connected to the top cover of the first semi-circular tube and the top cover of the second semi-circular tube, and both ends of the lower support rod are respectively connected to the bottom cover of the first semi-circular tube and the bottom cover of the second semi-circular tube. The upper support rod and the lower support rod are both telescopic rods and have the same telescopic direction;

[0006] A first winding rod is axially arranged in the first semi-circular tube, and a second winding rod is axially arranged in the second semi-circular tube. Both ends of the first winding rod are respectively rotatably connected to the top cover and the bottom cover on the first semi-circular tube, and both ends of the second winding rod are respectively connected to the top cover and the bottom cover on the second semi-circular tube;

[0007] The first semi-circular tube, the second semi-circular tube, the upper support rod, the lower support rod and the warning sign are all made of insulating materials. Among them, the warning sign is made of a flexible material that can be rolled up, and both sides of the warning sign are respectively connected to the first winding rod and the second winding rod;

[0008] A semi-circular first concave slideway coaxial with the outer tube wall of the first semi-circular tube is provided, and a semi-circular second concave slideway coaxial with the outer tube wall of the second semi-circular tube is provided. The first annular lock is matched with the first concave slideway, and the second annular lock is matched with the second concave slideway;

[0009] And on the inner bottom of the first concave slideway and the inner bottom of the second concave slideway, semi-circular first grooves coaxial with each other are provided at the same axial height. The notch of the axial cross-section of the first groove is larger at one end close to its center and smaller at one end far from its center. On the side faces of the first annular lock and the second annular lock facing their centers, semi-circular first convex rails coaxial with each other are provided. The first convex rail is matched with the first groove so that the first convex rail can slide in the first groove.

[0010] Preferably, clamping pieces for clamping the side edges are respectively provided on both side edges of the warning sign;

[0011] On the surfaces of the first winding rod and the second winding rod, card slots are arranged along the axis, and the card slots are matched with the corresponding clamping pieces on the corresponding side.

[0012] Further preferably, one end of the card slot is in the shape of a flared opening; one end of the clamping piece is provided with a pull handle for assisting in pulling out the clamping piece from the card slot.

[0013] Further preferably, a torsion spring is sleeved on the top end of the first winding rod. One end of the torsion spring is connected to the first winding rod, and the other end is connected to the top cover on the first semi-circular tube.

[0014] Even more preferably, on the middle longitudinal section of the circular tube, sealing plates are provided on both the first semi-circular tube and the second semi-circular tube. The sealing plates are provided with through holes for the warning sign to pass through;

[0015] The upper end of the sealing plate is detachably connected to the corresponding top cover, and the lower end is detachably connected to the corresponding bottom cover.

[0016] Preferably, semi-circular second grooves coaxial with each other and having the same axial height are further provided on the inner bottom of the first concave slideway and the inner bottom of the second concave slideway. The notch of the axial cross-section of the second groove is rectangular;

[0017] On the side faces of the first annular lock and the second annular lock facing their respective centers, semi-circular second convex rails coaxial with each other are provided. The second convex rail is matched with the second groove so that the second convex rail can slide in the second groove.

[0018] Further preferably, the first grooves are provided above and below each second groove, and the first convex rails are provided above and below each second convex rail, and the first grooves and the first convex rails are in one-to-one correspondence and match with each other.

[0019] Further preferably, magnetic protrusions are provided at the starting ends of each of the first convex rails in the clockwise direction, and magnetic grooves are provided at the ending ends;

[0020] The magnetic protrusions match the magnetic grooves and have opposite polarities for attraction.

[0021] Preferably, an anti-tipping device is provided on each of the bottom covers to prevent the first semi-circular tube or the second semi-circular tube from tipping over.

[0022] Further preferably, the bottom cover is semi-circular with an outer diameter the same as that of the first semi-circular tube, and the anti-tipping device is a plurality of anti-tipping members evenly distributed along the center of the bottom cover.

[0023] Even further preferably, the anti-tipping members are in the shape of flat plates, and the length along the radial direction of the bottom cover is less than the radius of the bottom cover;

[0024] A plurality of third grooves corresponding to and matching the anti-tipping members one by one are provided on the bottom surface of the bottom cover, and the anti-tipping members are hingedly arranged in the corresponding third grooves, and the hinge axis is located on the side away from the center of the bottom cover.

[0025] Preferably, a hanging ring is provided on the top cover for connecting a protective rope.

[0026] Preferably, the warning sign is made of textile fabric.

[0027] It can be seen from the above technical solutions that the present invention has the following advantages:

[0028] For a cable terminal tower platform isolation device provided by the present invention, both sides of the warning sign are respectively connected to the first winding rod and the second winding rod. By rotating the first rotating rod, the warning sign can be stored on the first rotating rod. By compressing the upper support rod and the lower support rod, the first semi-circular tube and the second semi-circular tube can be joined together. Then, by simultaneously rotating the first annular lock and the second annular lock, both ends of the first annular lock and both ends of the second annular lock are respectively located on both sides of the joint seam of the first semi-circular tube and the second semi-circular tube, and thus the first semi-circular tube and the second semi-circular tube can be spliced, so that the device of the present invention can be contracted into a cylinder, with a compact shape and small size, which is convenient for the staff to carry when going up and down the platform and store when idle;

[0029] When in use, rotate the first annular lock and the second annular lock so that the first annular lock is located in the first concave slideway and the second annular lock is located in the second concave slideway. Then, pull the first semi-circular tube and the second semi-circular tube until the warning sign is unfolded. Then, place the device of the present invention between the platforms that need to be isolated to play an isolation and warning role. The operation is simple and the use is convenient, solving the problem that there is no good safety isolation device between the live-side platform and the power-off-side platform of the cable terminal tower platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 Schematic three-dimensional structure of an isolation device for a cable terminal tower platform provided by an embodiment of the present invention Figure 1 ;

[0032] Figure 2 Schematic three-dimensional structure of an isolation device for a cable terminal tower platform provided by an embodiment of the present invention Figure 2 ;

[0033] Figure 3 Structural diagram of the first annular lock and the first concave slideway in an isolation device for a cable terminal tower platform provided by an embodiment of the present invention;

[0034] Figure 4 Structural diagram of the first annular lock and the second annular lock in an isolation device for a cable terminal tower platform provided by an embodiment of the present invention;

[0035] Figure 5 Overall structural diagram of the first winding rod and the card slot in an isolation device for a cable terminal tower platform provided by an embodiment of the present invention;

[0036] Figure 6 Structural diagram of the warning sign in an isolation device for a cable terminal tower platform provided by an embodiment of the present invention;

[0037] Figure 7 For Figure 6 Node A diagram in;

[0038] Figure 8 For Figure 6 Node B diagram in;

[0039] Figure 9 For Figure 5The C-node diagram in;

[0040] Figure 10 is Figure 9 the D-node diagram in;

[0041] Figure 11 The connection schematic diagram of the upper end of the sealing plate in a cable terminal tower platform isolation device provided by an embodiment of the present invention;

[0042] Figure 12 The connection schematic diagram of the lower end of the sealing plate in a cable terminal tower platform isolation device provided by an embodiment of the present invention;

[0043] Figure 13 The upward view after the anti-tilting device in a cable terminal tower platform isolation device provided by an embodiment of the present invention is unfolded;

[0044] Figure 14 The upward view after the anti-tilting device in a cable terminal tower platform isolation device provided by an embodiment of the present invention is folded up;

[0045] Figure 15 is Figure 13 the structural diagram of the anti-tilting member and the hinge shaft in;

[0046] Wherein, the reference numerals illustrate: the first semi-circular tube 1, the second semi-circular tube 2, the upper support rod 3, the lower support rod 4, the warning sign 5, the first annular lock 6, the second annular lock 7, the top cover 8, the bottom cover 9, the first winding rod 10, the second winding rod 11, the first concave slideway 12, the second concave slideway 13, the first groove 14, the first convex rail 15, the clip 16, the card slot 17, the handle 18, the torsion spring 19, the sealing plate 20, the through hole 21, the upper snap 22, the upper snap groove 23, the lower snap 24, the lower snap groove 25, the second groove 26, the second convex rail 27, the first magnetic projection 28, the first magnetic groove 29, the second magnetic projection 30, the second magnetic groove 31, the anti-tilting member 32, the third groove 33, the hinge shaft 34, the fourth groove 35, the hanging ring 36. Detailed implementation manners

[0047] In order to make the invention objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "upper", "lower", "inner", and "outer" is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0049] Unless otherwise clearly specified and defined, the terms "connected", "fixed", and "arranged" 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, a direct connection, or an indirect connection through an intermediate medium, and it can be a connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0050] In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include one or more of such features, unless otherwise clearly and specifically defined.

[0051] The embodiment of the present invention provides a cable terminal tower platform isolation device, as Figures 1 to 4 shown, including: a first semi-circular tube 1 and a second semi-circular tube 2 that can be assembled into a circular tube, upper support rods 3 and lower support rods 4 that are parallel to each other, a warning sign 5, a first annular lock 6, and a second annular lock 7; both the first semi-circular tube 1 and the second semi-circular tube 2 are provided with a top cover 8 at the top end and a bottom cover 9 at the bottom end;

[0052] Both ends of the upper support rod 3 are respectively connected to the top cover 8 of the first semi-circular tube 1 and the top cover 8 of the second semi-circular tube 2, and both ends of the lower support rod 4 are respectively connected to the bottom cover 9 of the first semi-circular tube 1 and the bottom cover 9 of the second semi-circular tube 2. The upper support rod 3 and the lower support rod 4 are both telescopic rods and have the same telescopic direction;

[0053] A first winding rod 10 is axially arranged inside the first semi-circular tube 1, and a second winding rod 11 is axially arranged inside the second semi-circular tube 2. Both ends of the first winding rod 10 are respectively rotatably connected to the top cover 8 and the bottom cover 9 on the first semi-circular tube 1, and both ends of the second winding rod 11 are respectively connected to the top cover 8 and the bottom cover 9 on the second semi-circular tube 2;

[0054] The first semi-circular pipe 1, the second semi-circular pipe 2, the upper support rod 3, the lower support rod 4 and the warning sign 5 are all made of insulating materials. Among them, the warning sign 5 is made of a flexible material that can be rolled up, and both sides of the warning sign 5 are respectively connected to the first rolling rod 10 and the second rolling rod 11. Specifically, the material of the warning sign 5 is textile fabric, or other durable insulating plastic products, etc. Warning words such as "Do not cross" can be marked on the warning sign 5 to play a safety warning role.

[0055] A coaxial semi-circular first concave slideway 12 is arranged on the outer wall of the first semi-circular pipe 1, and a coaxial semi-circular second concave slideway 13 is arranged on the outer wall of the second semi-circular pipe 2. The first annular lock 6 matches the first concave slideway 12, and the second annular lock 7 matches the second concave slideway 13.

[0056] And on the inner bottom of the first concave slideway 12 and the inner bottom of the second concave slideway 13, coaxial semi-circular first grooves 14 are arranged at the same axial height. The notch of the axial section of the first groove 14 is large at the end close to its center and small at the end far from its center. Specifically, it can be a cross-section such as a T-shaped shown in Figure 3 that can limit the first convex rail 15 from slipping out of the first groove 14. The first annular lock 6 and the second annular lock 7 are both provided with coaxial semi-circular first convex rails 15 on the side facing their centers. The first convex rail 15 matches the first groove 14 so that the first convex rail 15 can slide in the first groove 14.

[0057] A cable terminal tower platform isolation device provided by the present invention connects both sides of the warning sign 5 to the first rolling rod 10 and the second rolling rod 11 respectively. By rotating the first rotating rod 10, the warning sign 5 can be stored on the first rotating rod 10. By compressing the upper support rod 3 and the lower support rod 4, the first semi-circular pipe 1 and the second semi-circular pipe 2 can be joined together. Then, by rotating the first annular lock 6 and the second annular lock 7 simultaneously, both ends of the first annular lock 6 and both ends of the second annular lock 7 are respectively located on both sides of the joint seam of the first semi-circular pipe 1 and the second semi-circular pipe 2, and then the first semi-circular pipe 1 and the second semi-circular pipe 2 can be spliced, so that the device of the present invention is condensed into a cylinder, with a compact shape and small size, which is convenient for the staff to carry when going up and down the platform and store when it is idle. It should be noted that the preferred usage method is to rotate the first annular lock 6 and the second annular lock 7 in the same direction by 90°, so that they are evenly distributed on both sides of the above-mentioned joint seam respectively.

[0058] When in use, rotate the first annular lock 6 and the second annular lock 7 so that the first annular lock 6 is located in the first concave slideway 12 and the second annular lock 7 is located in the second concave slideway 13. Then, pull the first semi-circular pipe 1 and the second semi-circular pipe 2 apart until the warning sign 5 is unfolded. Then, place the device of the present invention between the platforms that need to be isolated to play an isolation and warning role. The operation is simple and the use is convenient, solving the problem that there is no good safety isolation device between the live side and the de-energized side platforms of the cable terminal tower platform.

[0059] In a specific embodiment, Figures 5 to 10 As shown, the two sides of the warning sign 5 are respectively provided with clips 16 for clamping the sides, and the surfaces of the first rolling rod 10 and the second rolling rod 11 are both provided with a clamping groove 17 along the axis, and the clamping groove 17 matches the clip 16 on the corresponding side, so that after the clip 16 is taken out from the clamping groove 17, the warning sign 5 can be easily replaced. Figure 10 As shown, one end of the slot 17 is in a trumpet shape, so that the clip 16 can be more easily inserted into the slot 17; a handle 18 is provided at one end of the clip 16, and the clip 16 can be more easily pulled out of the slot 17 by pinching the handle 18.

[0060] In a more specific embodiment, Figure 9 As shown, a torsion spring 19 is sleeved on the top of the first rolling rod 10, one end of the torsion spring 19 is connected to the first rolling rod 10, and the other end is connected to the top cover 8 on the first semicircular tube 1. When the first semicircular tube 1 and the second semicircular tube 2 are pulled apart, the warning sign 5 will drive the first rolling rod 10 to rotate, thereby causing the torsion spring 19 to twist and generate a restoring elastic force. In this way, when the first semicircular tube 1 and the second semicircular tube 2 are combined, the warning sign 5 will automatically roll up on the first rolling rod 10 due to the restoring elastic force of the torsion spring 19, thereby improving the convenience of use of the device of the present invention.

[0061] In a more specific embodiment, the first semicircular tube 1 and the second semicircular tube 2 are both provided with a sealing plate 20 on the middle longitudinal section of the circular tube, and the sealing plate 20 is provided with a through hole 21 for the warning sign 5 to pass through; the upper end of the sealing plate 20 and the corresponding top cover 8, and the lower end and the corresponding bottom cover 9 are both detachably connected. On the one hand, the sealing plate 20 improves the stability of the structure of the device of the present invention, and on the other hand, it can also play a shielding role to prevent a large amount of dust from entering, which is not conducive to internal cleaning and causes the warning sign 5 stored inside to be stained. Specifically, the detachable connection can be as follows Figures 11 to 12 As shown, an elastic upper buckle 22 is provided at the upper end of the sealing plate 20, and an upper buckle groove 23 is correspondingly provided on the top cover 9, a lower buckle 24 is provided at the lower end of the sealing plate 20, and a lower buckle groove 25 is correspondingly provided on the bottom cover 9, and the two ends of the sealing plate 20 are respectively fixed on the top cover 8 and the bottom cover 9 by the cooperation of the upper buckle 22 and the upper buckle groove 23, and the lower buckle 24 and the lower buckle groove 25. When the sealing plate 20 needs to be disassembled when replacing the warning sign 5, the upper buckle 22 is pressed downward to make it withdraw from the upper buckle groove 23, and the sealing plate 20 can be smoothly removed, which is simple to operate and easy to use; of course, other detachable methods such as screws can also be used, which are not listed here one by one.

[0062] In a specific embodiment, Figures 3 to 4As shown, a semi-circular second groove 26 with the same axis and axial height is also provided at the inner bottom of the first concave slideway 12 and the inner bottom of the second concave slideway 13. The notch of the axial section of the second groove 26 is rectangular, such as Figure 3 Type I as shown; semi-circular second protrusions 27 with the same axis are provided on the sides of the first annular lock 6 and the second annular lock 7 facing their respective centers. The second protrusions 27 are matched with the second grooves 26 so that the second protrusions 27 can slide in the second grooves 26. Through the cooperation of the second protrusions 27 and the second grooves 26, a certain guiding effect is achieved, further restricting the sliding trajectory of the first protrusion 15 in the first groove 14, so as to ensure that the first protrusion 15 slides more smoothly in the first groove 14.

[0063] More specifically, first grooves 14 are provided above and below each second groove 26, and first protrusions 15 are provided above and below each second protrusion 27, and the first grooves 14 and the first protrusions 15 are in one-to-one correspondence and match, so as to ensure that both the upper and lower ends of the first / second annular locks can be closely attached to the first / second concave slideways.

[0064] In a specific embodiment, as Figures 3 to 4 shown, a first magnetic protrusion 28 is provided at the starting end of each first protrusion 15 in the clockwise direction, and a first magnetic groove 29 is provided at the ending end; the first magnetic protrusion 28 and the first magnetic groove 29 are matched in size and attracted in polarity, and can make the closed loop of the first annular lock 6 and the second annular lock 7 closer by means of magnetic attraction, avoiding accidental rotation to separate the first semi-circular tube 1 and the second semi-circular tube 2, and at the same time improving the rotational flexibility of the first annular lock 6 and the second annular lock 7; more specifically, a second magnetic protrusion 30 is provided at the starting end of each second protrusion 27 in the clockwise direction, and a second magnetic groove 31 is provided at the ending end, further improving the magnetic attraction between the first annular lock 6 and the second annular lock 7.

[0065] In a specific embodiment, an anti-tipping device is provided on each bottom cover 9 to prevent the first semi-circular tube 1 or the second semi-circular tube 2 from tipping over and avoid the device of the present invention from tipping over during use. Specifically, as Figures 13 to 15As shown, the bottom cover 9 is semi-circular with an outer diameter the same as that of the first semi-circular pipe 1. The anti-tilting device is a plurality of anti-tilting members 32 evenly distributed along the center of the bottom cover 9. In a more specific embodiment, the anti-tilting member 32 is a flat plate. A plurality of third grooves 33 corresponding to and matching the anti-tilting members 32 one by one are provided on the bottom surface of the bottom cover 9. The anti-tilting members 32 are hingedly arranged in the corresponding third grooves 33, and the hinge axis 34 is located on the side away from the center of the bottom cover 9. The length of the anti-tilting member 32 along the radial direction of the bottom cover 9 is less than the radius of the bottom cover 9. In this way, when the device of the present invention is not in use, each anti-tilting member 32 can be hidden on the bottom side of the bottom cover 9, reducing the external dimensions of the device of the present invention. At the same time as realizing the uniform distribution of a plurality of anti-tilting members 32, a position space can be left at the center to set the fourth groove 35. The fourth groove 35 is an operating space for opening each anti-tilting member 32, which is convenient for rotating and opening each anti-tilting member 32 from each third groove 33.

[0066] In a specific embodiment, as Figure 1 shown in FIG. 8 or 9, a hanging ring 36 is provided on the top cover 8 for connecting a protective rope. When using the device of the present invention, connecting the protective rope to the tower body of the cable terminal tower can prevent it from accidentally falling, thereby improving the safety of its use.

[0067] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cable terminal tower platform isolation device, characterized in that, it includes: a first semi-circular pipe and a second semi-circular pipe that can be joined together to form a circular pipe, upper and lower support rods that are parallel to each other, a warning sign, a first annular lock and a second annular lock; both the first semi-circular pipe and the second semi-circular pipe are provided with a top cover at the top end and a bottom cover at the bottom end; both ends of the upper support rod are respectively connected to the top cover of the first semi-circular pipe and the top cover of the second semi-circular pipe, both ends of the lower support rod are respectively connected to the bottom cover of the first semi-circular pipe and the bottom cover of the second semi-circular pipe, and both the upper support rod and the lower support rod are telescopic rods and have the same telescopic direction; a first winding rod is axially arranged inside the first semi-circular pipe, a second winding rod is axially arranged inside the second semi-circular pipe, both ends of the first winding rod are respectively rotatably connected to the top cover and the bottom cover on the first semi-circular pipe, and both ends of the second winding rod are respectively connected to the top cover and the bottom cover on the second semi-circular pipe; the first semi-circular pipe, the second semi-circular pipe, the upper support rod, the lower support rod and the warning sign are all made of insulating materials, wherein the warning sign is made of a flexible material that can be rolled up, and both sides of the warning sign are respectively connected to the first winding rod and the second winding rod; a coaxial semi-circular first concave slideway is arranged on the outer wall of the first semi-circular pipe, a coaxial semi-circular second concave slideway is arranged on the outer wall of the second semi-circular pipe, the first annular lock matches the first concave slideway, and the second annular lock matches the second concave slideway; and the bottom of the first concave slideway and the bottom of the second concave slideway are both provided with coaxial semi-circular first grooves at the same axial height, and the notch of the axial cross-section of the first groove is large at the end close to its center and small at the end far from its center; both the first annular lock and the second annular lock are provided with coaxial semi-circular first convex rails on the side facing their centers, and the first convex rails match the first grooves so that the first convex rails can slide in the first grooves; the bottom of the first concave slideway and the bottom of the second concave slideway are both further provided with coaxial semi-circular second grooves with the same axial height, and the notch of the axial cross-section of the second groove is rectangular; both the first annular lock and the second annular lock are provided with coaxial semi-circular second convex rails on the side facing their respective centers, and the second convex rails match the second grooves so that the second convex rails can slide in the second grooves.

2. A cable terminal tower platform isolation device according to claim 1, characterized in that: clip pieces for clamping the side edges are respectively arranged on both sides of the warning sign; grooves are arranged along the axis on the surfaces of the first winding rod and the second winding rod, and the grooves match the clip pieces on the corresponding sides.

3. A cable terminal tower platform isolation device according to claim 2, characterized in that: one end of the groove is in the shape of a flared opening; one end of the clip piece is provided with a handle for assisting in pulling the clip piece out of the groove.

4. A cable terminal tower platform isolation device according to claim 2, characterized in that: A torsion spring is sleeved on the top end of the first winding rod. One end of the torsion spring is connected to the first winding rod, and the other end is connected to the top cover on the first semi-circular pipe.

5. A cable terminal tower platform isolation device according to claim 4, wherein: Sealing plates are arranged on the mid-longitudinal section of the circular pipe for both the first semi-circular pipe and the second semi-circular pipe. The sealing plates are provided with through holes for the warning sign to pass through; The upper end of the sealing plate is detachably connected to the corresponding top cover, and the lower end is detachably connected to the corresponding bottom cover.

6. A cable terminal tower platform isolation device according to claim 1, wherein: The first grooves are arranged above and below each of the second grooves, and the first convex rails are arranged above and below each of the second convex rails, and the first grooves and the first convex rails are in one-to-one correspondence and match each other.

7. A cable terminal tower platform isolation device according to claim 1, wherein: Magnetic convex heads are arranged at the starting ends in the clockwise direction of each of the first convex rails, and magnetic grooves are arranged at the ending ends; The magnetic convex heads and the magnetic grooves match each other and have opposite polarities for attraction.

8. A cable terminal tower platform isolation device according to claim 1, wherein: Anti-tipping devices are arranged on each of the bottom covers to prevent the first semi-circular pipe or the second semi-circular pipe from tipping over.

9. A cable terminal tower platform isolation device according to claim 8, wherein: The bottom cover is semi-circular with an outer diameter the same as that of the first semi-circular pipe, and the anti-tipping device is a plurality of anti-tipping members evenly distributed along the center of the bottom cover.

10. A cable terminal tower platform isolation device according to claim 9, wherein: The anti-tipping member is in the shape of a flat plate, and the length along the radial direction of the bottom cover is less than the radius of the bottom cover; A plurality of third grooves corresponding to and matching the anti-tipping members one by one are arranged on the bottom surface of the bottom cover. The anti-tipping members are hingedly arranged in the corresponding third grooves, and the hinge shaft is located on the side far from the center of the bottom cover.

11. A cable terminal tower platform isolation device according to claim 1, wherein: A hanging ring is arranged on the top cover for connecting a protective rope.

12. A cable terminal tower platform isolation device according to claim 1, wherein: The warning sign is made of textile fabric.

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