Improved cable laying device
By introducing a connection structure and a fire-retardant structure into the cable laying device, the problem of not tight connections and lack of protection in the bends in cable laying is solved, and higher connection tightness and fire prevention and control are achieved, reducing cable losses .
Patent Information
- Application Number
- CN202420792549.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-17
AI Technical Summary
In the laying of existing cables, the connection between the bent pipes is not tight enough, and the lines lack protection at the bends, which can easily lead to short circuits or fires.
An improved cable laying device is designed, including a main pipe and a connecting pipe movably connected to the outer surface of the main pipe. A connecting structure and a fire-retardant structure are arranged between the connecting pipe and the main pipe. The connecting structure is closely connected through a convex ring and a guide pipe. , the fire retardant structure uses dry powder and expanding materials to achieve flame retardant effect.
It improves the connection tightness of bends during cable laying, avoids short circuits and fires, and achieves rapid flame retardant and fire extinguishing through expansion materials and dry powder in case of fires, reducing cable losses.
Smart Images
Figure CN222301281U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable laying, and specifically to an improved cable laying device. Background Art
[0002] Cable laying is very common in construction. Cables are used to protect people's livelihood. Common cable laying includes direct burial cable laying, cable laying in pipes, cable laying in cable trenches or tunnels, and cable laying on bridges. Direct burial cable laying is the most common. At present, direct burial usually protects the cable through external protective pipes. There is usually no protection for the cable at turns or corners, or there is a situation where the connection is not in place;
[0003] After searching, the authorization announcement number is CN209981933U, which is a fire-resistant and flame-retardant laying device for cables. The fire-resistant and flame-retardant laying device for cables of this utility model can effectively ensure the continuous use of cables under high temperature conditions, and can continue to be used even after a fire;
[0004] However, the above-mentioned existing cables are not tightly connected to the bent pipes during the laying process, and the bending angle of the lines at the bends is large. There are no protective measures, which makes it easy to short-circuit or catch fire when a fault occurs. For this reason, we propose an improved cable laying device. Utility Model Content
[0005] The utility model proposes an improved cable laying device, which solves the problems mentioned in the background technology that the existing cables are not tightly connected with the bent pipes during the laying process, the bending angle of the lines is large at the bends, there are no protective measures, and short circuits or fires are prone to occur when a fault occurs.
[0006] The technical solution of the utility model is as follows:
[0007] An improved cable laying device comprises a main pipe and a connecting pipe movably connected to the outer surface of the main pipe, a connecting structure is arranged inside the connection between the connecting pipe and the main pipe, and a fire-blocking structure is arranged inside both the connecting pipe and the main pipe;
[0008] The connection structure includes a connection piece fixedly connected to the outer surface of the main pipe, a convex ring is fixedly connected to the outer surface of the connection piece, a guide pipe is fixedly connected to the outer surface of the main pipe, and an inclined portion is fixedly connected to the lower end of the guide pipe.
[0009] As a further technical solution of the utility model, one end of the main pipe is movably connected with an end plug, and the fire-blocking structures are respectively distributed at intervals inside the connecting pipe and the main pipe.
[0010] As a further technical solution of the utility model, the fire-blocking structure includes an outer shell body fixedly connected to the outer surface of the inner wall of the main pipe, an inner shell body is arranged inside the outer shell body, the interior of the inner shell body is filled with dry powder, the interior of the cavity formed by the inner shell body and the outer shell body is filled with expansion material, and chamfered portions are provided at both ends of the outer shell body.
[0011] As a further technical solution of the utility model, the outer diameter of the connecting piece is smaller than the inner diameter of the connecting tube, the number of the convex rings is three groups and distributed in an array, the convex rings are annular rubber structures, the outer diameter of the convex rings is larger than the inner diameter of the connecting tube, and the larger part is 3mm.
[0012] As a further technical solution of the utility model, the guide tube passes through the main tube and is a bent "L"-shaped structure. The guide tube is half of the tubular structure. One end of the inclined portion is connected to the guide tube, and the other end is obliquely fixed to the inside of the main tube.
[0013] As a further technical solution of the utility model, the outer surface of the main pipe corresponds to the inner side of the guide pipe and is a hole connected to the inside of the connector, and the diameter of the hole is equal to the inner diameter of the guide pipe.
[0014] As a further technical solution of the utility model, the outer shells are spaced apart along the inner length direction of the main pipe and the connecting pipe, the outer shells are hollow cylindrical structures, and the thickness of the outer shells is one third of the outer diameter of the cable.
[0015] As a further technical solution of the utility model, the chamfered parts are opened on the inner sides of both ends of the outer shell, and the inner side of the outer shell is a heat-conducting material. The expansion material expands when heated so that the dry powder explodes to achieve flame retardancy when the cable inside the outer shell burns.
[0016] The working principle and beneficial effects of the utility model are:
[0017] In the utility model, the connection between the connecting pipe and the main pipe can be conveniently completed through the function of the connecting structure, a good guide can be formed for the cable, and the tightness effect of the connection between the two can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0019] Figure 1 It is a structural schematic diagram of the utility model;
[0020] Figure 2 It is a schematic diagram of a partial structure of the utility model;
[0021] Figure 3This is an exploded view of the connection structure of the utility model from another perspective;
[0022] Figure 4 It is a partial cross-sectional view of the connection structure of the utility model;
[0023] Figure 5 It is a schematic diagram of the partial structure of the fire-blocking structure of the utility model.
[0024] In the figure: 1. main pipe; 2. connecting pipe; 3. connecting structure; 31. connecting piece; 32. convex ring; 33. guide pipe; 34. inclined portion; 4. fire-blocking structure; 41. outer shell; 42. inner shell; 43. dry powder; 44. expansion material; 45. chamfered portion; 5. end plug. DETAILED DESCRIPTION
[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Example 1
[0027] like Figure 1 to Figure 4 As shown, this embodiment proposes an improved cable laying device, including a main pipe 1 and a connecting pipe 2 movably connected to the outer surface of the main pipe 1, a connecting structure 3 is arranged inside the connection between the connecting pipe 2 and the main pipe 1, and fire-blocking structures 4 are arranged inside the connecting pipe 2 and the main pipe 1; an end plug 5 is movably connected to one end of the main pipe 1, and the fire-blocking structures 4 are distributed at intervals inside the connecting pipe 2 and the main pipe 1.
[0028] The connection structure 3 includes a connection piece 31 fixedly connected to the outer surface of the main pipe 1 , a convex ring 32 is fixedly connected to the outer surface of the connection piece 31 , a guide pipe 33 is fixedly connected to the outer surface of the main pipe 1 , and an inclined portion 34 is fixedly connected to the lower end of the guide pipe 33 .
[0029] The outer diameter of the connector 31 is smaller than the inner diameter of the connector tube 2. The number of the convex rings 32 is three groups and they are distributed in an array. The convex rings 32 are annular rubber structures. The outer diameter of the convex rings 32 is larger than the inner diameter of the connector tube 2, and the larger part is 3 mm. The guide tube 33 passes through the main tube 1 and is a bent "L"-shaped structure. The guide tube 33 is half of the tubular structure. One end of the inclined portion 34 is connected to the guide tube 33, and the other end is obliquely fixed to the inside of the main tube 1. The outer surface of the main tube 1 corresponds to the inner side of the guide tube 33, which is a hole connected to the inside of the connector 31, and the diameter of the hole is equal to the inner diameter of the guide tube 33.
[0030] The connection between the connecting pipe 2 and the main pipe 1 can be easily completed, a good guide can be formed for the cable, and the tightness effect of the connection between the two can be enhanced.
[0031] During use, when it is necessary to complete the connection between two sets of pipes, the user can place the connecting pipe 2 at the installation position, and then vertically insert one end of the connecting pipe 2 corresponding to the position of the connecting piece 31 on the connecting pipe 2, so that the connecting pipe 2 includes the connecting piece 31 together with the convex ring 32. At this time, the convex ring 32 will shrink a part under the extrusion, so as to maintain the tightness of the connection between the connecting pipe 2 and the main pipe 1. At the same time, when passing the cable, the user can pass the cable from the end of the main pipe 1 away from the connecting pipe 2, and push the cable so that the other end of the cable gradually shuttles to the other end of the main pipe 1. One end of the main pipe 1 will first contact the inclined portion 34, and under the guiding action of the guide tube 33, the head of the cable will shuttle toward the direction of the connecting pipe 2. The inclined portion 34 and the guide tube 33 can guide the direction of the cable, and no other positioning measures are required by the installer. At the same time, the guide tube 33 and the inclined portion 34 can make the cable automatically achieve the turning effect, avoiding damage to the cable caused by manual cable bending.
[0032] Example 2
[0033] like Figure 5 As shown, on the basis of Example 1, the fire-blocking structure 4 includes an outer shell 41 fixedly connected to the outer surface of the inner wall of the main pipe 1, an inner shell 42 is arranged inside the outer shell 41, the inner shell 42 is filled with dry powder 43, the cavity formed by the inner shell 42 and the outer shell 41 is filled with expansion material 44, and chamfered portions 45 are provided at both ends of the outer shell 41.
[0034] The outer shell 41 is distributed along the inner length direction of the main pipe 1 and the connecting pipe 2 at intervals, and the outer shell 41 is a hollow cylindrical structure, and the thickness of the outer shell 41 is one third of the outer diameter of the cable; the chamfered parts 45 are opened on the inner sides of both ends of the outer shell 41, and the inner side of the outer shell 41 is a heat-conducting material. The expansion material 44 expands when heated, so that the dry powder 43 explodes to achieve flame retardancy when the cable inside the outer shell 41 burns.
[0035] When in use, it can create a flame retardant effect on both ends of the burning part of the cable when the cable burns, preventing the cable from gradually burning along the laying direction, and can reduce losses when the cable burns.
[0036] During use, the cable is located inside the main pipe 1 or the connecting pipe 2, and passes through the inner side of the outer shell 41 in sequence. When the cable burns, the expansion material 44 will expand due to the heat, thereby breaking the inner shell 42 together with the chamfered portion 45, so that the dry powder 43 is directly distributed on the outer surface of the cable at that location. At this time, the flame at that location of the cable will be extinguished by the dry powder 43. At the same time, the fire-blocking structure 4 on the other side closest to the burning cable will also extinguish the flame, which can extinguish the flames at both ends of the cable, and then extinguish the flames at both ends of the burning part of the cable, so that the fire of the cable can be contained, avoiding the flame from burning rapidly along the length direction of the cable, reducing the loss of the cable burning, and achieving the effect of rapid fire extinguishing.
[0037] It should be noted that in actual applications, the cable can be passed through the main pipe 1 first, and then the connection between the connecting pipe 2 and the main pipe 1 can be made, which can effectively speed up the cable laying time and at the same time make the guide pipe 33 and the inclined portion 34 have a better guiding effect on the cable.
[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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. An improved cable laying device, comprising a main pipe (1) and a connecting pipe (2) movably connected to the outer surface of the main pipe (1), characterized in that: A connecting structure (3) is provided inside the connection between the connecting pipe (2) and the main pipe (1), and a fire-blocking structure (4) is provided inside both the connecting pipe (2) and the main pipe (1); The connection structure (3) comprises a connection piece (31) fixedly connected to the outer surface of the main pipe (1), a convex ring (32) fixedly connected to the outer surface of the connection piece (31), a guide pipe (33) fixedly connected to the outer surface of the main pipe (1), and an inclined portion (34) fixedly connected to the lower end of the guide pipe (33).
2. The improved cable laying device according to claim 1, characterized in that: One end of the main pipe (1) is movably connected to an end plug (5), and the fire-blocking structures (4) are distributed at intervals inside the connecting pipe (2) and the main pipe (1).
3. The improved cable laying device according to claim 1, characterized in that: The fire-blocking structure (4) comprises an outer shell (41) fixedly connected to the outer surface of the inner wall of the main pipe (1); an inner shell (42) is arranged inside the outer shell (41); the inner shell (42) is filled with dry powder (43); the cavity formed by the inner shell (42) and the outer shell (41) is filled with expansion material (44); and chamfered portions (45) are provided at both ends of the outer shell (41).
4. The improved cable laying device according to claim 1, characterized in that: The outer diameter of the connecting piece (31) is smaller than the inner diameter of the connecting tube (2); the number of the protruding rings (32) is three groups and they are arranged in an array; the protruding rings (32) are annular rubber structures; the outer diameter of the protruding rings (32) is larger than the inner diameter of the connecting tube (2), and the larger part is 3 mm.
5. The improved cable laying device according to claim 4, characterized in that: The guide tube (33) passes through the main tube (1) and is a bent "L"-shaped structure. The guide tube (33) is half of the tubular structure. One end of the inclined portion (34) is connected to the guide tube (33), and the other end is obliquely fixed to the inside of the main tube (1).
6. The improved cable laying device according to claim 5, characterized in that: The outer surface of the main pipe (1) corresponds to the inner side of the guide pipe (33) and is a hole connected to the inside of the connecting piece (31), and the diameter of the hole is equal to the inner diameter of the guide pipe (33).
7. The improved cable laying device according to claim 3, characterized in that: The outer shells (41) are spaced apart along the inner length direction of the main pipe (1) and the connecting pipe (2), respectively; the outer shells (41) are cylindrical structures with a hollow interior, and the thickness of the outer shells (41) is one third of the outer diameter of the cable.
8. The improved cable laying device according to claim 7, characterized in that: The chamfered portions (45) are provided at the inner sides of both ends of the outer shell (41). The inner side of the outer shell (41) is made of heat-conducting material. The expansion material (44) expands when heated so that the dry powder (43) explodes, thereby achieving flame retardancy when the cable inside the outer shell (41) burns.