Cold contraction pipe supporting structure

Abstract

The utility model discloses a cold shrink tube supporting structure which comprises a supporting tube body and a traction rod. The supporting pipe body is formed by winding a wire rod in the spiral direction and is provided with a plurality of spiral rings. The adjacent spiral rings are connected with each other through glue; the traction rod is arranged in the supporting body and extends in the length direction of the supporting pipe body. A traction rope is arranged between the traction rod and the spiral ring located at the tail end of the supporting pipe body. A plurality of elastic strips are arranged on the traction rod at intervals in the length direction of the traction rod; the elastic strip is provided with a plurality of supporting positions abutting against the inner circumferential wall of the supporting pipe body. A penetrating space extending in the length direction of the supporting pipe body is defined by the interiors of the elastic strips; the traction rod is located in the penetrating space. The cold shrink tube supporting device can effectively improve the supporting effect on a cold shrink tube, is convenient to disassemble and assemble, saves time and labor, and is high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of cold shrinkable tubes, in particular to a support structure for cold shrinkable tubes. Background Art

[0002] Cold shrinkable tubes are often used to seal and protect exposed cable connection joints. During the manufacturing process, cold shrinkable tubes are made of elastomeric materials. After the diameter is enlarged by equipment, they are inserted into a spiral support tube for support. When in use, the cable passes through the support tube, and then the support tube is pulled out, and the cold shrinkable tube automatically shrinks to wrap around the outside of the cable to play roles such as waterproofing and sealing. The above-mentioned spiral support tube is generally formed by spirally winding plastic wire, with a hollow inside. Limited by its own material and structure, the overall radial compression resistance of the spiral support tube is not good. When using only the spiral support tube, the support effect on the cold shrinkable tube is not good, and it is prone to dent and deform under greater pressure, affecting the support effect of the cold shrinkable tube. In addition, in the above-mentioned spiral support tube, the gap between adjacent two spiral coils is relatively narrow, and it is difficult for glue to be fully filled between the two spiral coils, resulting in a relatively low adhesive strength between the two spiral coils. When subjected to external pressure, the spiral coils of the support tube are prone to separate from each other, easily causing the support tube to lose its support function. Summary of the Utility Model

[0003] Aiming at the above-mentioned existing technical problems, the purpose of the utility model is to provide a support structure for cold shrinkable tubes, which can effectively improve the support effect on cold shrinkable tubes, and is convenient for disassembly and assembly, time-saving and labor-saving, and has strong practicability.

[0004] The technical solution of the utility model is realized as follows: A support structure for cold shrinkable tubes includes a support tube body and a pull rod;

[0005] The support tube body is formed by winding a wire along a spiral direction and has a plurality of spiral coils; adjacent spiral coils are joined to each other by glue;

[0006] The pull rod is arranged inside the support body and extends along the length direction of the support tube body; a pull rope is arranged between the pull rod and the spiral coil at the tail end of the support tube body;

[0007] A plurality of elastic strips are arranged at intervals along the length direction of the pull rod; the elastic strips have a plurality of support positions that abut against the inner peripheral wall of the support tube body; an insertion space extending along the length direction of the support tube body is formed inside the elastic strips; the pull rod is located inside the insertion space.

[0008] Furthermore, a V-shaped groove extending along the joint position of adjacent two spiral coils is arranged on the outer wall of the support tube body; the glue is filled in the V-shaped groove.

[0009] Furthermore, there are engaging surfaces facing each other between adjacent spiral coils; bevels are provided on the outer edges of the engaging surfaces; the bevels between two adjacent spiral coils are combined with each other on the outer wall of the support tube body to form the V-shaped groove.

[0010] Furthermore, the elastic strip is of a bent structure and has two elastic ends that can approach or move away from each other; a plurality of support protrusions for abutting against the inner wall of the support tube body are arranged at intervals on the outer surface of the elastic strip.

[0011] Furthermore, a C-shaped buckle is provided on the elastic strip; the C-shaped buckle is buckled and connected with the pull rod; limiting parts for restricting the movement of the C-shaped buckle are arranged on both sides of the C-shaped buckle on the pull rod.

[0012] Furthermore, the position of the pull rod deviates from the central axis of the support tube body.

[0013] Furthermore, the head end of the pull rod is exposed outside the head end of the support tube body.

[0014] Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

[0015] 1. Through the combined use of the elastic strip and the pull rod, the elastic strip can further support the support tube body under the action of its own elasticity to enhance the radial support force of the support tube body. At the same time, an insertion space is formed inside the elastic strip, and the cable can pass through this insertion space and be inserted into the support tube body without interfering with the insertion movement of the cable. By pulling and rotating the pull rod around the cable, the support tube body can be withdrawn from the cold shrinkable tube, and each elastic strip can be synchronously withdrawn from the cold shrinkable tube in sequence. The combination of the above methods can effectively improve the support effect on the cold shrinkable tube, and is convenient for disassembly and assembly, time-saving and labor-saving, and has strong practicability.

[0016] 2. In the utility model, V-shaped grooves are arranged at the joint positions of two adjacent spiral coils on the outer wall of the support tube body, and glue is filled in the V-shaped grooves to fully bond the spiral coils on both sides together, effectively improving the connection strength between the spiral coils to prevent separation between the spiral coils when being pressed, and further improving the support strength of the support tube body. And the V-shaped grooves are arranged on the outer wall of the support tube body, which is convenient for filling glue and can prevent the glue from overflowing onto the surface of the support tube body, and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solutions of the present utility model will be further described below with reference to the drawings:

[0018] Figure 1 is a three-dimensional structure diagram of the overall structure of the present utility model;

[0019] Figure 2 Cross-sectional view structure schematic diagram of Figure 1 ;

[0020] Figure 3 It is Figure 2 The enlarged view at position A in

[0021] Figure 4 It is Figure 1 exploded view of

[0022] Figure 5 It is Figure 4 The enlarged view at position B in

[0023] Figure 6 It is Figure 1 3D structure schematic diagram from another perspective of

[0024] Figure 7 3D structure schematic diagram of the pull rod of the present utility model;

[0025] Figure 8 3D structure schematic diagram of the elastic strip of the present utility model;

[0026] Wherein: 1, support tube body; 11, spiral coil; 12, joint surface; 13, inclined surface; 14, V-shaped groove; 2, pull rod; 21, pull rope; 22, limiting part; 3, elastic strip; 31, support protrusion; 32, C-shaped buckle; 33, insertion space. Specific embodiments

[0027] The following will elaborate on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0028] As Figures 1-8 shown is a cold shrinkable tube support structure according to this embodiment. The support structure is inserted into the interior of the cold shrinkable tube to support the expanded cold shrinkable tube. The support structure includes a support tube body 1 and a pull rod 2. The support tube body 1 is formed by winding a wire along a spiral direction to have a plurality of spiral coils 11. Among them, the above-mentioned wire is a plastic wire. The adjacent two spiral coils 11 are joined to each other by glue to connect each spiral coil 11 into a whole, so that the support tube has a certain support strength. The adhesion strength of this glue is small, so that the spiral coils 11 can be separated from each other by pulling.

[0029] In this embodiment, a V-shaped groove 14 extending along the joint position of two adjacent spiral coils 11 is machined on the outer wall of the support tube body 1. The aforementioned glue is filled in the V-shaped groove 14. The filling form of the glue can be in the form of dot gluing or continuous gluing. When designing the specific structure, there are facing joint surfaces 12 between the two adjacent spiral coils 11. Chamfers 13 are machined on the outer edges of the joint surfaces 12 of each spiral coil 11. The chamfers 13 of two adjacent spiral coils 11 are combined with each other on the outer wall of the support tube body 1 to form the aforementioned V-shaped groove 14. By filling the glue in the V-shaped groove 14, the two-sided spiral coils 11 can be fully adhered together, effectively improving the connection strength between the spiral coils 11, preventing the separation between the spiral coils 11 when under pressure, and further improving the support strength of the support tube body 1. And the V-shaped groove 14 is arranged on the outer wall of the support tube body 1, which is convenient for filling the glue and can prevent the glue from overflowing to the surface of the support tube body 1, with strong practicability.

[0030] The aforementioned pull rod 2 is arranged inside the support body and extends along the length direction of the support tube body 1. The pull rod 2 has a designed outer diameter. The head end of the pull rod 2 is exposed outside the head end of the support tube body 1, and a pull rope 21 is connected between the tail end of the pull rod 2 and the spiral coil 11 located at the tail end of the support tube body 1. When the pull rod 2 is pulled, the spiral coils 11 can be driven to separate from each other in sequence starting from the spiral coil 11 at the tail end through the pulling of the pull rope 21. A plurality of elastic strips 3 are arranged at intervals along the length direction of the pull rod 2. The elastic strips 3 are accommodated inside the support tube body 1. The elastic strips 3 are plastic strips and are in a bent structure, so they have their own elastic force. The elastic strips 3 have a plurality of support positions that are in contact with the inner peripheral wall of the support tube body 1. Through these support positions, the support tube body 1 is elastically supported from the inside to improve the radial compressive resistance of the support tube body 1. An insertion space 33 extending along the length direction of the support tube body 1 is formed inside the elastic strip 3. The cable can pass through the support tube body 1 via the insertion space 33. The aforementioned pull rod 2 is located inside the insertion space 33 so that the pull rod 2 can move smoothly inside the support tube body 1 without being squeezed by the elastic strips 3.

[0031] Specifically, the aforementioned elastic strip 3 is in a bent structure, preferably in a C-shaped structure. The elastic strip 3 has two elastic ends that can approach or move away from each other. Through the above structural design, the elastic strip 3 has its own elasticity. When the elastic strip 3 is pressed, the two elastic ends can move closer to each other. A plurality of support protrusions 31 for contacting the inner wall of the support tube body 1 are formed at intervals on the outer surface of the elastic strip 3. The aforementioned support positions are arranged corresponding to the support protrusions 31. Through the action of the support protrusions 31, the elastic strip 3 can fully contact the inner peripheral wall of the support tube, improving the support effect.

[0032] In this embodiment, a C-shaped fastener 32 is formed on the elastic strip 3. The C-shaped fastener 32 is located in the insertion space 33. The C-shaped fastener 32 is snap-connected to the pull rod 2 to install the elastic strip 3 on the pull rod 2, facilitating the disassembly and assembly of the elastic strip 3. On both sides of the C-shaped fastener 32 on the pull rod 2, there are limit parts 22 for restricting the movement of the C-shaped fastener 32. When the pull rod 2 is pulled along the length direction of the support tube body 1, through the limitation of the limit parts 22, the elastic strip 3 can be driven to move along the length direction of the support tube body 1.

[0033] When specifically arranged, the positions of the C-shaped fastener 32 and the pull rod 2 deviate from the central axis of the support tube body 1 to increase the diameter of the insertion space 33, so as to be able to adapt to the insertion requirements of cables with different outer diameters.

[0034] During specific assembly, the support tube body 1 is wound into a spiral shape by a tooling fixture, and glue is filled into the V-shaped groove 14 through a glue gun so that the spiral coils 11 of the support tube body 1 are connected to each other. The elastic strip 3 is pre-snap-connected to the pull rod 2 through the C-shaped fastener 32, and then the elastic strip 3 and the pull rod 2 as a whole are inserted into the support tube body 1. Finally, the support tube body 1 as a whole is inserted into the expanded cold shrinkable tube to support the cold shrinkable tube. In the above manner, the elastic strip 3 can further support the support tube body 1 under its own elastic force to enhance the radial supporting force of the support tube body 1 and effectively improve the supporting effect on the cold shrinkable tube.

[0035] During specific use, the cable is inserted into the support tube body 1 through the insertion space 33 formed by each elastic strip 3. The pull rod 2 is pulled to one side and rotated around the cable, and the pulling rope 21 pulls the spiral coil 11 at the tail end to sequentially separate each spiral coil 11 and extract the support tube body 1 from the cold shrinkable tube, and at the same time, move each elastic strip 3 out of the cold shrinkable tube in sequence. In the above manner, the cable can be inserted into the support tube body 1 through this insertion space 33 without interfering with the insertion movement of the cable, and the disassembly and assembly are convenient, saving time and effort.

[0036] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A cold-shrinkable tube support structure, comprising a support tube body and a pulling rod; characterized in that: The support tube body is formed by winding a wire along a spiral direction and has a plurality of spiral coils; adjacent spiral coils are joined to each other by glue; The pulling rod is arranged inside the support body and extends along the length direction of the support tube body; a pulling rope is arranged between the pulling rod and the spiral coil at the tail end of the support tube body; A plurality of elastic strips are arranged on the pulling rod at intervals along its length direction; the elastic strips have a plurality of support positions that abut against the inner peripheral wall of the support tube body; an insertion space extending along the length direction of the support tube body is formed by enclosing inside the elastic strip; the pulling rod is located inside the insertion space.

2. The cold shrinkable tube support structure according to claim 1, characterized in that: A V-shaped groove extending along the joint position of two adjacent spiral coils is arranged on the outer wall of the support tube body; the glue is filled in the V-shaped groove.

3. The cold-shrinkable tube support structure according to claim 2, characterized in that: There are joint surfaces facing each other between adjacent spiral coils; inclined surfaces are arranged on the outer edges of the joint surfaces; the inclined surfaces of two adjacent spiral coils are combined with each other on the outer wall of the support tube body to form the V-shaped groove.

4. The cold-shrinkable tube support structure according to claim 1, wherein: The elastic strip is of a bent structure and has two elastic ends that can approach or move away from each other; a plurality of support protrusions for abutting against the inner wall of the support tube body are arranged at intervals on the outer surface of the elastic strip.

5. The cold-shrinkable tube support structure according to claim 1, characterized in that: A C-shaped buckle is arranged on the elastic strip; the C-shaped buckle is buckled and connected with the pulling rod; limiting parts for restricting the movement of the C-shaped buckle are arranged on both sides of the C-shaped buckle on the pulling rod.

6. The cold-shrinkable tube support structure according to claim 1, wherein: The position of the pulling rod deviates from the central axis of the support tube body.

7. The cold-shrinkable tube support structure according to claim 1, wherein: The head end of the pulling rod is exposed outside the head end of the support tube body.

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