Cable protection pipe fireproof mud anti-falling device and anti-falling method

Abstract

The invention relates to a cable protection pipe fireproof mud anti-falling device and an anti-falling method, the cable protection pipe fireproof mud anti-falling device comprises two clamping mechanisms, the two clamping mechanisms are in butt joint to sleeve a cable, the two clamping mechanisms are in butt joint to form a cylindrical annular structure, and the diameter of an upper end opening of the cylindrical annular structure is larger than that of a lower end opening of the cylindrical annular structure; the diameter of an opening in the lower end of the cylindrical annular structure is the same as the outer diameter of a cable, the fireproof mud is placed in a space formed by butt joint of the two clamping mechanisms, the tops of the two clamping mechanisms are used for being connected to the upper end of a protection pipe in a hung mode, and the outer walls of the two clamping mechanisms make contact with the inner wall of the protection pipe through elastic washers. The lower end of the clamping part can be tightly attached to the cable through the counter-acting force between the elastic washer and the protection pipe, auxiliary fixing tools such as a strap are not needed, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of cable protection pipes, and in particular to a fireproof mud anti-falling device and an anti-falling method for cable protection pipes. Background Art

[0002] The sealing of the protective tube used for cable poles is very important. If the cable protection tube is not sealed tightly, it will easily lead to water accumulation in the cable channel, causing the cable to be soaked in water for a long time, and small animals to enter the cable channel, causing leakage and power outages, which will seriously affect the safety of line operation. The current sealing method for cable protection tubes is mostly fireproof mud sealing. Fireproof mud is a flexible flame retardant material with good fire retardant, smoke blocking, oil resistance, water resistance and corrosion resistance.

[0003] A common problem with fireproof mud is that it is prone to overall falling off and partial cracking and separation during long-term operation. At present, a flame-retardant fireproof mud anti-falling protective device for cable protection tube has appeared (publication number CN115800130A), which has a flame-retardant fireproof mud cover. The upper edge of the flame-retardant fireproof mud cover is fixed to the cable protection tube, and the lower edge is fixed to the cable. The flame-retardant fireproof mud is filled in the flame-retardant fireproof mud cover, and the flame-retardant fireproof mud cover is used to support and fix the fireproof mud.

[0004] However, the existing fireproof mud anti-falling device for the protective tube has a flame-retardant fireproof mud cover of a truncated cone structure, and its upper and lower edges are fixed by hoops. Since the flame-retardant fireproof mud cover is placed between the cable and the protective tube, the lower edge of the flame-retardant fireproof mud cover is difficult to fix and difficult to disassemble and assemble. In addition, there is a gap between the lower edge of the flame-retardant fireproof mud cover and the cable, which will affect the support for the fireproof mud and the waterproof effect. Summary of the invention

[0005] In order to solve the technical problems in the above-mentioned background technology that the existing fireproof mud anti-falling device for protective tube is difficult to disassemble and assemble, the lower edge is difficult to fix, and it is very easy to affect the support and waterproof effect of the fireproof mud, the present invention provides a cable protection tube fireproof mud anti-falling device and anti-falling method.

[0006] The technical solution of the present invention is as follows: The present invention provides a cable protection tube fireproof mud anti-falling device, comprising: two clamping mechanisms, the two clamping mechanisms are butt-jointed and sleeved on the cable, the two clamping mechanisms are butt-jointed to form a cylindrical ring structure, the upper end opening diameter of the cylindrical ring structure is larger than the lower end opening thereof, the lower end opening diameter of the cylindrical ring structure is the same as the outer diameter of the cable, the fireproof mud is placed in a space formed by the butt-jointed two clamping mechanisms, the tops of the two clamping mechanisms are used to be hung on the upper end of the protection tube, the outer walls of the two clamping mechanisms are in contact with the inner wall of the protection tube through elastic washers, the reaction force between the elastic washers and the protection tube can make the lower end of the clamping part fit tightly on the cable, there is no need to use auxiliary fixing tools such as hoops, and disassembly and assembly are convenient.

[0007] Preferably, the clamping mechanism includes an arc-shaped clamping body, a limiting portion is fixedly provided on the top of the clamping body, a supporting portion is fixedly provided on the bottom of the clamping body, a clamping portion is fixedly provided on the supporting portion, the limiting portions on the two clamping mechanisms are butt-jointed to form a first through hole, the supporting portions of the two clamping mechanisms are butt-jointed, and the clamping portions are butt-jointed to form a second through hole, the diameter of the second through hole is smaller than the first through hole, and the diameter of the second through hole is the same as the outer diameter of the cable, the first through hole facilitates the placement of the fireproof mud in the space enclosed by the two clamping mechanisms, and the second through hole is used for the passage of the cable.

[0008] Preferably, the clamping portion is an arc-shaped columnar structure, and a first protrusion is fixedly provided in an annular direction on the side wall of the clamping portion for fitting with the cable. The first protrusion is a continuous tooth-shaped structure. On the one hand, the first protrusion can contact the outer wall of the cable to achieve line and surface contact. Compared with the contact between surfaces, the sealing effect is better, and with the force of the elastic gasket, the sealing between the bottom of the anti-falling device and the cable can be effectively guaranteed; on the other hand, each tooth of the continuous tooth-shaped structure contains a pointed head, and the side edge is obliquely arranged along the axial direction of the cable. The continuous tooth-shaped structure encounters relatively little obstruction during installation or removal, and the scratches on the outer wall of the cable are relatively weak. It can reduce damage to the cable while ensuring sealing, and facilitate the disassembly and assembly of the anti-falling device.

[0009] Preferably, the outer diameter of the clamping body is the same as the inner diameter of the protective tube, and the elastic gasket is fixedly arranged on the outer wall of the clamping body. The setting of the elastic gasket can give a reaction force to the clamping body, thereby pushing the clamping part to fit tightly with the cable, effectively fixing the lower end position of the anti-falling device and the sealing between the cable, while also ensuring the sealing between the anti-falling device and the protective tube.

[0010] Preferably, the elastic gasket is close to the bottom of the clamping body, which can effectively control the two clamping parts to approach each other and ensure the sealing between the clamping parts and the cable.

[0011] Preferably, the two clamping mechanisms are sealed by plugging the second protrusion into the groove, thereby ensuring the sealing of the connection between the two mechanisms.

[0012] Preferably, a limiting groove for inserting with the upper end of the protective tube is opened at the bottom of the limiting part, or a flange is fixedly provided on the limiting part, so that the overall position of the anti-falling device can be fixed by hanging the limiting part with the upper end of the protective tube.

[0013] The present invention provides an anti-falling method, which is as follows: Arrange two clamping mechanism butt sleeves on the cable; Insert the two clamping mechanisms that have been connected between the cable and the protective tube, so that the two clamping mechanisms move downward as a whole until the two limit parts are hung on the upper end of the protective tube, and the elastic gasket pushes the two clamping parts to approach each other, so that the first protrusions on the two clamping parts are in close contact with the outer wall of the cable; The fireproof mud is placed in the space enclosed by the two clamping mechanisms through the first through hole.

[0014] It can be seen from the above technical solutions that the advantages of the present invention are: 1. The opening diameter of the lower end of the cylindrical annular structure enclosed by the two clamping mechanisms is the same as the outer diameter of the cable, and the outer walls of the two clamping mechanisms are in contact with the inner wall of the protective tube through elastic washers, which can realize the rapid installation and disassembly of the anti-falling device, and ensure the fixation of the bottom of the anti-falling device and the sealing between the bottom of the anti-falling device and the cable, while playing the role of fire-proof mud blocking and anti-falling, ensuring the waterproof effect and facilitating the use of the anti-falling device. At the same time, the elastic washers can also ensure the sealing between the anti-falling device and the protective tube.

[0015] 2. The clamping portion is used to fix a first protrusion on the side wall in an annular direction for fitting with the cable. The first protrusion is a continuous tooth-shaped structure. On the one hand, the first protrusion can contact with the outer wall of the cable to achieve line and surface contact. Compared with the contact between surfaces, the sealing effect is better. Combined with the force of the elastic gasket, the sealing between the bottom of the anti-falling device and the cable can be effectively guaranteed; on the other hand, each tooth of the continuous tooth-shaped structure contains a pointed head, and the side edge is obliquely arranged along the axial direction of the cable. The continuous tooth-shaped structure is relatively less obstructed during installation or removal, and the scratches on the outer wall of the cable are relatively weak. It can reduce damage to the cable while ensuring sealing, and facilitate the disassembly and assembly of the anti-falling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 A schematic diagram of a three-dimensional structure of an anti-falling device in use according to one or more embodiments of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the anti-falling device according to one or more embodiments of the present invention; Figure 3 is a schematic structural diagram of a first clamping mechanism according to one or more embodiments of the present invention; Figure 4is a schematic structural diagram of a second clamping mechanism according to one or more embodiments of the present invention; The components represented by the reference numerals in the figure are: 1. Anti-falling device; 2. Cable; 3. Protective tube; 4. First clamping mechanism; 41. First clamping body; 42. First limiting part; 43. First supporting part; 44. First clamping part; 5. Second clamping mechanism; 51. Second clamping body; 52. Second limiting part; 53. Second supporting part; 54. Second clamping part; 6. First through hole; 7. Second through hole; 8. First protrusion; 9. Second protrusion; 10. Groove; 11. Elastic gasket; 12. Limiting groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0019] Example 1 In a typical embodiment of the present invention, Figure 1-Figure 4 As shown, a cable protection tube fireproof mud anti-falling device is proposed, the anti-falling device 1 (i.e., the cable protection tube fireproof mud anti-falling device) is used to be arranged between the cable 2 and the protection tube 3, the cable protection tube fireproof mud anti-falling device comprises: a first clamping mechanism 4 and a second clamping mechanism 5, the first clamping mechanism 4 and the second clamping mechanism 5 are docked and matched to form a cylindrical ring structure, the upper end opening diameter of the cylindrical ring structure is larger than the lower end opening diameter thereof, wherein the lower end opening diameter of the cylindrical ring structure is the same as the outer diameter of the cable 2, the first clamping mechanism 4 and the second clamping mechanism 5 are docked and clamped on the cable 2, and are located in the space between the cable 2 and the protection tube 3, and the fireproof mud is placed in the space formed by the docking of the first clamping mechanism 4 and the second clamping mechanism 5.

[0020] like Figure 3As shown, the first clamping mechanism 4 includes a first clamping body 41, a first limiting portion 42, a first supporting portion 43 and a first clamping portion 44. The first clamping body 41 is an arc-shaped plate-like structure. The first limiting portion 42 is fixedly arranged on the top of the first clamping body 41 by welding, one-piece molding, etc. The first limiting portion 42 is used to be placed at the upper end of the protective tube 3 to limit the installation position of the first clamping mechanism 4. The first limiting portion 42 is an arc-shaped plate-like structure; the first supporting portion 43 is also an arc-shaped plate-like structure. The first supporting portion 43 is fixedly arranged on the bottom of the first clamping body 41 by welding, one-piece molding, etc., and is used to support fire-proof mud. The first clamping portion 44 is fixedly arranged on the first supporting portion 43 by welding, one-piece molding, etc. The first clamping portion 44 is an arc-shaped columnar structure, and the first clamping portion 44 is used to fit with the outer surface of the cable 2.

[0021] The outer diameter of the first clamping body 41 is the same as the inner diameter of the protective tube 3, and an elastic gasket 11 is fixedly connected to the outer wall of the first clamping body 41 near its bottom by gluing or the like. In actual use, the reaction force between the elastic gasket 11 and the protective tube 3 can make the lower end of the first clamping part 44 fit tightly on the cable 2, without the need to use auxiliary fixing tools such as hoops, thereby facilitating disassembly and assembly.

[0022] The second clamping mechanism 5 has the same structure as the first clamping mechanism 4. Figure 4 As shown, the second clamping mechanism 5 includes a second clamping body 51, a second limiting portion 52, a second supporting portion 53 and a second clamping portion 54. The second clamping body 51 is an arc-shaped plate-like structure. The second limiting portion 52 is fixedly arranged on the top of the second clamping body 51 by welding, one-piece molding, etc. The second limiting portion 52 is used to be placed at the upper end of the protective tube 3 to limit the installation position of the second clamping mechanism 5. The second limiting portion 52 is an arc-shaped plate-like structure; the second supporting portion 53 is also an arc-shaped plate-like structure. The second supporting portion 53 is fixedly arranged on the bottom of the second clamping body 51 by welding, one-piece molding, etc., and is used to support fire-proof mud. The second clamping portion 54 is fixedly arranged on the second supporting portion 53 by welding, one-piece molding, etc. The second clamping portion 54 is an arc-shaped columnar structure. The second clamping portion 54 is used to fit with the outer surface of the cable 2.

[0023] The outer diameter of the second clamping body 51 is the same as the inner diameter of the protective tube 3, and an elastic gasket 11 is fixedly connected to the outer wall of the second clamping body 51 near its bottom by gluing or the like. In actual use, the reaction force between the elastic gasket 11 and the protective tube 3 can make the second clamping part 54 fit tightly on the cable 2, without the need to use auxiliary fixing tools such as hoops, thereby facilitating disassembly and assembly.

[0024] The first clamping mechanism 4 and the second clamping mechanism 5 are docked and matched with each other. Specifically, the first clamping body 41 and the second clamping body 51 are docked to form a space for placing the fire-proof mud; the first limiting portion 42 and the second limiting portion 52 are docked to be placed on the upper end of the protective tube 3 along the annular direction, and the first limiting portion 42 and the second limiting portion 52 are docked to form a first through hole 6; the first supporting portion 43 and the second supporting portion 53 are docked to form a bottom plate structure for supporting the fire-proof mud; the first clamping portion 44 and the second clamping portion 54 are docked, and a second through hole 7 is formed between the first supporting portion 43 and the second supporting portion 53 and between the first clamping portion 44 and the second clamping portion 54, wherein the diameter of the first through hole 6 is greater than the diameter of the second through hole 7, and the diameter of the second through hole 7 is the same as the outer diameter of the cable 2.

[0025] In order to ensure the sealing between the anti-falling device 1 and the cable 2, the first clamping part 44 and the second clamping part 54 are fixedly provided with a first protrusion 8 along the circumferential direction of the side wall that is in contact with the cable 2. The first protrusion 8 is a continuous tooth-shaped structure. On the one hand, the first protrusion 8 can contact the outer wall of the cable 2 to achieve line and surface contact. Compared with the contact between surfaces, the sealing effect is better. Combined with the force of the elastic gasket 11, the sealing between the bottom of the anti-falling device 1 and the cable 2 can be effectively guaranteed; on the other hand, each tooth of the continuous tooth-shaped structure contains a pointed head, and the side edge is obliquely arranged along the axial direction of the cable 2. Compared with the linear protrusions, wavy protrusions and other structures arranged circumferentially, the continuous tooth-shaped structure is relatively less obstructed during installation or removal, and the scratches on the outer wall of the cable 2 are relatively weak. It can reduce the damage to the cable 2 while ensuring the sealing, and facilitate the disassembly and assembly of the anti-falling device 1.

[0026] It can be understood that the first protrusion 8 is made of elastic material such as rubber.

[0027] In order to ensure the sealing after the first clamping mechanism 4 and the second clamping mechanism 5 are connected, the sealing is achieved between the side edges of the first clamping mechanism 4 and the second clamping mechanism 5 by plugging the second protrusion 9 into the groove 10. In this embodiment, the second protrusion 9 is fixedly arranged on the side edge of the first clamping mechanism 4 for connection, and the groove 10 is opened on the side edge of the second clamping mechanism 5 for connection.

[0028] It can be understood that in other embodiments, the second protrusion 9 can also be fixedly arranged on the side of the second clamping mechanism 5 for docking, and the groove 10 can also be opened on the side of the first clamping mechanism 4 for docking. The specific setting method can be determined according to actual design requirements. As long as the docking seal between the first clamping mechanism 4 and the second clamping mechanism 5 can be achieved by plugging the second protrusion 9 into the groove 10, no excessive restrictions will be made here.

[0029] The first limiting portion 42 and the second limiting portion 52 can be plugged into and matched with the upper end of the protective tube 3 through the limiting groove 12 to achieve the limitation of the upper end of the anti-falling device 1. At this time, the limiting groove 12 is opened at the bottom of the first limiting portion 42 and the second limiting portion 52 and is arranged along the circumferential direction. In other embodiments, the first limiting portion 42 and the second limiting portion 52 can also be fixedly provided with a flange structure to be hung at the upper end of the protective tube 3. The specific setting method is not restricted too much here.

[0030] It is understandable that the first clamping mechanism 4 and the second clamping mechanism 5 may also be fixed by bolts, in which case ear plates need to be fixedly provided on the first limiting portion 42 and the second limiting portion 52 .

[0031] Example 2 In another typical embodiment of the present invention, an anti-falling method is proposed, which uses the anti-falling device 1 mentioned in Example 1, as follows: The first clamping mechanism 4 and the second clamping mechanism 5 are buckled onto the cable 2, and the first clamping mechanism 4 is docked with the second clamping mechanism 5. Specifically, the first clamping body 41 is docked with the second clamping body 51, the first limiting portion 42 is docked with the second limiting portion 52, the first supporting portion 43 is docked with the second supporting portion 53, and the first clamping portion 44 is docked with the second clamping portion 54; The first clamping mechanism 4 and the second clamping mechanism 5 after the docking are inserted between the cable 2 and the protection tube 3, so that the first clamping mechanism 4 and the second clamping mechanism 5 are moved downward as a whole until the bottom of the first limiting part 42 and the second limiting part 52 contact the upper end surface of the protection tube 3, so that the first limiting part 42 and the second limiting part 52 are placed at the upper end of the protection tube 3; Among them, when the bottom of the first limiting part 42 and the second limiting part 52 is provided with a limiting groove 12, the upper end of the protective tube 3 is inserted into the limiting groove 12 to achieve hanging; when the first limiting part 42 and the second limiting part 52 are fixedly provided with a flange structure, the first limiting part 42 and the second limiting part 52 are hung at the upper end of the protective tube 3 by utilizing the flange.

[0032] When the first clamping mechanism 4 and the second clamping mechanism 5 are installed in place, the elastic gasket 11 acts on the inner wall of the protection tube 3 to push the first clamping portion 44 and the second clamping portion 54 closer to each other, so that the first protrusions 8 on the first clamping portion 44 and the second clamping portion 54 are in close contact with the outer wall of the cable 2 to achieve sealing; Finally, the fireproof mud is placed in the space enclosed by the first clamping mechanism 4 and the second clamping mechanism 5 through the first through hole 6 .

[0033] The size settings of the first clamping body 41, the second clamping body 51 and the second through hole 7, combined with the use of the elastic gasket 11, can achieve rapid installation and disassembly of the anti-falling device 1, and ensure the fixation of the bottom of the anti-falling device 1, and the sealing between the bottom of the anti-falling device 1 and the cable 2, while playing the role of fire-proof mud sealing to prevent falling, ensuring the waterproof effect and facilitating the use of the anti-falling device 1.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cable protection tube fireproof mud anti-falling device, comprising: Two clamping mechanisms are butt-jointed and sleeved on the cable (2), characterized in that the two clamping mechanisms are butt-jointed to form a cylindrical ring structure, the diameter of the upper end opening of the cylindrical ring structure is larger than the diameter of the lower end opening, the diameter of the lower end opening of the cylindrical ring structure is the same as the outer diameter of the cable (2), the fireproof mud is placed in the space formed by the butt-jointed two clamping mechanisms, the tops of the two clamping mechanisms are used to be hung on the upper end of the protective tube (3), and the outer walls of the two clamping mechanisms are in contact with the inner wall of the protective tube (3) through elastic washers (11).

2. A cable protection tube fireproof mud anti-falling device according to claim 1, characterized in that: The clamping mechanism comprises an arc-shaped plate-shaped clamping body, a limiting portion is fixedly provided on the top of the clamping body, a supporting portion is fixedly provided on the bottom of the clamping body, a clamping portion is fixedly provided on the supporting portion, the limiting portions on the two clamping mechanisms are butted together to form a first through hole (6), the supporting portions of the two clamping mechanisms are butted together, and the clamping portions are butted together to form a second through hole (7), the diameter of the second through hole (7) is smaller than the first through hole (6), and the diameter of the second through hole (7) is the same as the outer diameter of the cable (2).

3. A cable protection tube fireproof mud anti-falling device according to claim 2, characterized in that: The clamping portion is an arc-shaped columnar structure, and a first protrusion (8) is fixedly provided along the circumferential direction on a side wall of the clamping portion for fitting with the cable (2), and the first protrusion (8) is a continuous tooth-shaped structure.

4. A cable protection tube fireproof mud anti-falling device according to claim 2, characterized in that: The outer diameter of the clamping body is the same as the inner diameter of the protection tube (3), and the elastic gasket (11) is fixedly arranged on the outer wall of the clamping body.

5. A cable protection tube fireproof mud anti-falling device according to claim 4, characterized in that: The elastic washer (11) is close to the bottom of the clamping body.

6. A cable protection tube fireproof mud anti-falling device according to claim 1, characterized in that: The two clamping mechanisms are sealed by plugging the second protrusion (9) and the groove (10).

7. A cable protection tube fireproof mud anti-falling device according to claim 2, characterized in that: A limiting groove (12) for inserting with the upper end of the protection tube (3) is provided at the bottom of the limiting portion, or a flange is fixedly provided on the limiting portion.

8. A method for preventing falling off, characterized in that: A cable protection tube fireproof mud anti-falling device according to any one of claims 1 to 7 is adopted, which is specifically as follows: Arrange the two clamping mechanism sleeves on the cable (2); Inserting the two clamping mechanisms after docking between the cable (2) and the protective tube (3), so that the two clamping mechanisms move downward as a whole until the two limit parts are hooked on the upper end of the protective tube (3), and the elastic gasket (11) pushes the two clamping parts closer to each other, so that the first protrusions (8) on the two clamping parts are in close contact with the outer wall of the cable (2); The fireproof mud is placed in the space enclosed by the two clamping mechanisms through the first through hole (6).

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