High-strength cable rubber sheath

Abstract

The utility model provides a high strength cable rubber sheath, relates to the cable protection technology field, and comprises a sheath body and a cable core, the sheath body comprises two mutually hinged semi-circular sleeves, a connecting rubber ring is installed in the semi-circular sleeves, the connecting rubber ring abuts against a cable joint, and the cable joint is connected with the semi-circular sleeves. The outer wall of the connecting rubber ring is arranged to be an inclined sliding face, an inclined groove matched with the inclined sliding face in a concave-convex mode is formed in the inner wall of the semicircular sleeve, a sliding inserting piece is slidably connected into the semicircular sleeve, and a butt joint groove and a bending groove which communicate with each other are formed in the outer wall of the sliding inserting piece. The cable core is arranged in the bending groove and the butt joint groove in a bending mode. According to the utility model, the cable core is bent and arranged in the connecting rubber ring by sliding the plug-in, so that the pulling force on the connecting rubber ring when the cable core shrinks is increased, the connecting rubber ring can tightly hold the cable core, and the cable core is prevented from breaking the connector.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection, in particular to a high-strength cable rubber sheath. Background Art

[0002] Cables play an irreplaceable role in electric energy transmission. Cable joints are important components used to connect two independent cables. Usually, the rubber sheaths at both ends of the cables are removed and connected through the cable core and the rubber sheath. However, in extreme environments, the cables will expand and contract due to heat and cold, which will pull the weak connection of the cable, i.e. the cable joint, out of the rubber sheath and break it. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a high-strength cable rubber sheath, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A high-strength cable rubber sheath comprises a protective sheath body and two symmetrically connected cable connectors, the cable connectors comprising a plurality of cable cores, the protective sheath body comprising two symmetrically arranged semicircular sleeves, the semicircular sleeves being sleeved at both ends of the cable connector, a connecting rubber ring being installed in the semicircular sleeves, the connecting rubber ring being in contact with the cable connector, the outer wall of the connecting rubber ring being arranged as an inclined sliding surface, the inner wall of the semicircular sleeve being arranged with an inclined groove which is concave-convexly matched with the inclined sliding surface, a sliding plug-in being slidingly connected in the semicircular sleeve, the sliding plug-in being in contact with the cable core.

[0008] Preferably, the sliding plug-in includes an integrally formed horizontal portion and a truncated cone portion, the circumferential outer wall of the horizontal portion is provided with a plurality of docking grooves, the outer wall of the truncated cone portion is provided with a plurality of obliquely arranged bending grooves, the docking grooves are connected with the bending grooves, and the cable core is bent and arranged in the bending grooves and the docking grooves.

[0009] Preferably, the inner wall of the connecting rubber ring is provided with a clamping groove cooperating with the bending groove and the docking groove, and the clamping groove abuts against the cable core.

[0010] Preferably, a positioning ring is provided in the middle of the semicircular sleeve, the positioning ring abuts against the cable core joint, and an extrusion sheet is provided on the inner side of the positioning ring, the extrusion sheet abuts against the rear end of the sliding plug-in.

[0011] Preferably, the extrusion sheet is distributed in the gap between two adjacent cable cores, the front end of the cable core is arranged as an inclined surface, and the inclined surface slides against the rear end of the sliding plug-in.

[0012] Preferably, the bending groove is distributed in a spiral shape on the outer wall of the truncated cone portion, the inner wall of the semicircular sleeve is provided with a thread groove, the thread of the connecting rubber ring fits in the thread groove, and the direction of the thread groove is opposite to the spiral direction of the bending groove.

[0013] Preferably, one side of the two semicircular sleeves are hinged to each other, and a connecting piece extends from the other side, and a locking bolt is connected between the two connecting pieces.

[0014] (III) Beneficial effects

[0015] The utility model provides a high-strength cable rubber sheath, which has the following beneficial effects:

[0016] 1. In the utility model, the cable core is supported by bending the outer side of the sliding plug, so that the cable core is connected to the inner wall of the connecting rubber ring in an inclined surface. When the cable core expands and contracts due to heat and contracts, the inclined contact surface can provide the connecting rubber ring with an inward holding force and a pulling force in the contraction direction, so that the connecting rubber ring is deformed inward, and the inward deformation holds the cable core tightly. The pulling force in the contraction direction makes the connecting rubber ring contact the inclined sliding surface of the semicircular sleeve, which is also converted into an inward deformation, which can tightly hold the cable core and prevent the cable core from being pulled out of the protective sleeve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a high-strength cable rubber sheath of the utility model. Figure 1 ;

[0018] Figure 2 It is a cross-sectional view of the protective cover body of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the sliding plug-in and the cable connector in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the semicircular sleeve in the utility model.

[0021] In the figure: 1, cable core; 2, semicircular sleeve; 3, connecting piece; 4, connecting rubber ring; 5, positioning ring; 6, extrusion piece; 7, bending groove; 8, docking groove; 9, sliding plug-in. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model embodiment provides a high-strength cable rubber sheath.

[0024] like Figure 1-4 As shown, it includes a protective sleeve body and two symmetrically connected cable connectors, the cable connector includes three cable cores 1, the protective sleeve body includes two symmetrically arranged semicircular sleeves 2, one side of the two semicircular sleeves 2 is hinged to each other, and a connecting piece 3 is extended from the other side, and a locking bolt is connected between the two connecting pieces 3, the semicircular sleeves 2 are sleeved on both ends of the cable connector, and a connecting rubber ring 4 is installed in the semicircular sleeve 2, the connecting rubber ring 4 is against the cable connector, and the outer wall of the connecting rubber ring 4 is set to be inclined The semicircular sleeve 2 has an inclined sliding surface, and the inner wall of the semicircular sleeve 2 is provided with an inclined groove that matches the inclined sliding surface. A sliding plug-in 9 is slidingly connected in the semicircular sleeve 2. The semicircular sleeve 2 is provided with a plurality of sliding blocks arranged axially, and the sliding blocks abut against the outer wall of the sliding plug-in 9. The sliding plug-in 9 includes an integrally formed horizontal portion and a frustum portion. The horizontal portion is cylindrical, and the frustum portion is frustum-shaped. The outer wall is set as an inclined surface. The circumferential outer wall of the horizontal portion is provided with a plurality of docking grooves 8. The outer wall of the truncated cone portion is provided with a plurality of inclined bending grooves 7, and the bending grooves 7 are spirally distributed on the outer wall of the truncated cone portion. The inner wall of the semicircular sleeve 2 is provided with a threaded groove, and the threaded fitting of the connecting rubber ring 4 is in contact with the threaded groove, and the direction of the threaded groove is opposite to the spiral direction of the bending groove 7. The docking groove 8 is connected to the bending groove 7, and the cross-section of the docking groove 8 and the bending groove 7 is semicircular. The inner wall of the connecting rubber ring 4 is provided with a clamping groove that cooperates with the bending groove 7 and the docking groove 8, and the cross-section of the clamping groove is the same as that of the docking groove. The groove 8 and the bending groove 7 form a circular groove with each other. The cable core 1 is bent and inserted into the bending groove 7, the docking groove 8 and the clamping groove. A positioning ring 5 is provided in the middle of the semicircular sleeve 2. The positioning ring 5 abuts against the docking point of the cable core 1. An extrusion sheet 6 is provided on the inner side of the positioning ring 5. The extrusion sheet 6 abuts against the rear end of the sliding plug-in 9. The extrusion sheet 6 is distributed in the gap between two adjacent cable cores 1. The front end of the cable core 1 is set as an inclined surface, and the inclined surface slides and abuts against the rear end of the sliding plug-in 9.

[0025] Working principle:

[0026] In the utility model, the connecting rubber ring 4 is sleeved on the cable joint, the three cable cores 1 of the cable joint are bent and placed in the bending groove 7 and the docking groove 8 on the outer side of the sliding plug 9, and the three cable cores 1 of the cable joints on both sides are docked respectively, and the semicircular sleeves 2 intersecting each other are sleeved on the outer sides of the two cable joints, and the locking bolts are tightened, and the extrusion pieces 6 on the inner wall of the semicircular sleeves 2 squeeze the sliding plug 9 toward both sides, so that the sliding plug 9 squeezes the cable core 1 tightly in the holding groove of the inner wall of the connecting rubber ring 4. When the cable When the core 1 expands and contracts due to heat and contracts outward, the cable core 1 will have a sliding tendency in the bending groove 7. The spirally arranged bending groove 7 will cause the sliding plug-in 9 to have a rotation tendency. The rotation tendency can be limited by the threads in opposite directions of the semicircular sleeve 2. The bending and spiral settings of the cable core 1 both increase the extrusion force between the cable core 1 and the connecting rubber ring 4, causing the connecting rubber ring 4 to deform inward, so that it hugs the cable core 1, preventing the cable core 1 from shrinking and pulling out of the protective sleeve body, thereby protecting the cable joint of the cable core 1.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength cable rubber sheath, comprising a sheath body and two symmetrically connected cable joints, the cable joints comprising a plurality of cable cores, characterized in that: The protective sleeve body includes two symmetrically arranged semicircular sleeves, which are sleeved on both ends of the cable connector. A connecting rubber ring is installed in the semicircular sleeve, and the connecting rubber ring abuts against the cable connector. The outer wall of the connecting rubber ring is arranged as an inclined sliding surface, and the inner wall of the semicircular sleeve is arranged with an inclined groove which matches the inclined sliding surface in a concave-convex manner. A sliding plug-in is slidingly connected inside the semicircular sleeve, and the sliding plug-in abuts against the cable core.

2. The high-strength cable rubber sheath according to claim 1, characterized in that: The sliding plug-in includes an integrally formed horizontal portion and a truncated cone portion, the circumferential outer wall of the horizontal portion is provided with a plurality of docking grooves, the outer wall of the truncated cone portion is provided with a plurality of inclined bending grooves, the docking grooves are connected with the bending grooves, and the cable core is bent and arranged in the bending grooves and the docking grooves.

3. The high-strength cable rubber sheath according to claim 2, characterized in that: The inner wall of the connecting rubber ring is provided with a clamping groove matched with the bending groove and the butt joint groove, and the clamping groove abuts against the cable core.

4. The high-strength cable rubber sheath according to claim 3, characterized in that: A positioning ring is arranged in the middle of the semicircular sleeve, and the positioning ring abuts against the cable core joint. An extrusion sheet is arranged on the inner side of the positioning ring, and the extrusion sheet abuts against the rear end of the sliding plug-in.

5. The high-strength cable rubber sheath according to claim 4, characterized in that: The extrusion sheet is distributed in the gap between two adjacent cable cores, the front end of the cable core is arranged as an inclined surface, and the inclined surface slides against the rear end of the sliding plug-in.

6. The high-strength cable rubber sheath according to claim 5, characterized in that: The bending grooves are distributed in a spiral on the outer wall of the truncated cone portion, the inner wall of the semicircular sleeve is provided with a thread groove, the thread of the connecting rubber ring fits in the thread groove, and the direction of the thread groove is opposite to the spiral direction of the bending groove.

7. The high-strength cable rubber sheath according to claim 6, characterized in that: One side of the two semicircular sleeves is hinged to each other, and a connecting piece is extended from the other side, and a locking bolt is connected between the two connecting pieces.

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