Waterproof sealing structure of pre-twisted connection fitting

Abstract

The utility model relates to the technical field of pre-twisted connection fittings, and discloses a waterproof sealing structure of a pre-twisted connection fitting, which comprises an insulating sealing sleeve, a fixing mechanism and an auxiliary mounting mechanism. According to the utility model, through the arrangement of the fixing mechanism and the auxiliary installation mechanism, the fixing mechanism can fix the two ends of the insulation sealing sleeve, and through a locking mode, the two ends of the insulation sealing sleeve are tightly attached to the outer surface of the cable, so that the insulation sealing sleeve can be firmly fixed in a high-temperature environment. The locked insulation sealing sleeve cannot be warped and curled due to the influence of high temperature, rainwater is prevented from entering the insulation sealing sleeve, the phenomenon that a bolt used for fixing is loosened due to vibration is avoided in an inserting mode, fixed connection of a fixing mechanism can be rapidly provided through an auxiliary installation mechanism, and the service life of the insulation sealing sleeve is prolonged. And the efficiency of mounting the fixing mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to prestranded joint fitting technical field, concretely is a waterproof sealing structure of prestranded joint fitting. BACKGROUND

[0002] Prestranded joint fitting is commonly used for broken line jointing of overhead line ground wire, broken line repair and the like, and compared with jointing pipe and burst pressure pipe, the biggest advantage is convenient installation, and single person operation is generally possible without carrying special equipment, in addition, prestranded joint fitting can realize recovery of original mechanical characteristics and electrical performance of the wire.

[0003] Overhead transmission line is exposed to the outside environment for a long time, and rainwater, humidity and the like are easy to enter from the connecting gap between the wire and the fitting, thereby causing corrosion and oxidation of the connecting part, affecting the electrical conductivity and mechanical strength. If an insulating sealing sleeve is externally sleeved at the connecting part, the insulating sealing sleeve can be fitted on the outside of the cable through thermal expansion and cold contraction by means of heating, thereby effectively sealing through close fitting and providing effective waterproof effect. In a high-temperature environment, the two ends of the insulating sealing sleeve are affected by high temperature, thereby causing volume expansion and thermal stress. Such stress can cause deformation of the material, causing the edge to be raised, and a gap is generated between the insulating sealing sleeve and the cable, so that rainwater enters to cause damage to the cable. SUMMARY

[0004] The utility model discloses a waterproof sealing structure of prestranded joint fitting to solve the problem that the two ends of the insulating sealing sleeve are affected by high temperature in a high-temperature environment, thereby causing volume expansion and thermal stress, such stress can cause deformation of the material, causing the edge to be raised, and a gap is generated between the insulating sealing sleeve and the cable, so that rainwater enters to cause damage to the cable.

[0005] To achieve the above object, the utility model provides the following technical scheme: a waterproof sealing structure of prestranded joint fitting, comprising: an insulating sealing sleeve, a fixing mechanism and an auxiliary installation mechanism, the insulating sealing sleeve is sleeved on the outside of the cable connecting part, the fixing mechanism is arranged on the outer wall of the two ends of the insulating sealing sleeve, the fixing mechanism comprises a first arc-shaped fixing block that is fitted on the top of the two ends of the insulating sealing sleeve, a second arc-shaped fixing block that is fitted on the bottom of the two ends of the insulating sealing sleeve, a connecting shaft that is rotatably connected to one end of the first arc-shaped fixing block and the second arc-shaped fixing block, a bolt that is inserted into the other end of the first arc-shaped fixing block and the second arc-shaped fixing block, a through hole that is formed on the screw rod of the bolt, a fixing seat that is welded on the outer wall of the first arc-shaped fixing block, a connecting rod that is slidably connected to the inside of the fixing seat, an insertion rod that is welded on one end of the connecting rod, and a spring that is sleeved on the outer wall of the insertion rod, and the auxiliary installation mechanism is arranged on the outer wall of the first arc-shaped fixing block.

[0006] By adopting the above technical scheme, the insulation sealing sleeve can be prevented from being affected by high temperature, thereby avoiding the curling and lifting of the two ends of the insulation sealing sleeve.

[0007] Further, the size of the plug-in rod is matched with the inner diameter of the through hole.

[0008] By adopting the above technical scheme, the plug-in rod can be accurately inserted into the inside of the through hole, thereby performing subsequent positioning and fixing work.

[0009] Further, the auxiliary mounting mechanism comprises a trapezoidal block welded on the outer wall of the first arc-shaped fixing block, and the cross section of the trapezoidal block is shaped as an isosceles trapezoid.

[0010] By adopting the above technical scheme, the structure above can be attached to the top of the trapezoidal block to realize horizontal movement.

[0011] Further, the auxiliary mounting mechanism further comprises a circular groove opened in the central part of the top of the trapezoidal block.

[0012] By adopting the above technical scheme, the internal structure can be placed to perform rapid fixing work.

[0013] Further, the auxiliary mounting mechanism further comprises a fixing plate welded on the outer wall of the plug-in rod.

[0014] By adopting the above technical scheme, the circular hole is opened in the inside of the fixing plate, which can realize stable movement of the internal structure in the vertical direction.

[0015] Further, the auxiliary mounting mechanism further comprises a positioning rod vertically and slidingly connected in the inside of the fixing plate.

[0016] By adopting the above technical scheme, the vertical sliding displacement can be quickly realized by the vertical movement.

[0017] Further, the diameter of the positioning rod is matched with the inner diameter of the circular groove.

[0018] By adopting the above technical scheme, the positioning rod can be accurately plugged into the inside of the circular groove to realize the positioning effect.

[0019] In summary, the utility model discloses the following beneficial effects: be provided with fixed mechanism and auxiliary installation mechanism, fixed mechanism can fix both ends of insulating sealing sleeve, through the mode of locking, thereby make the both ends of insulating sealing sleeve tightly adhere to the outer surface of cable, in the environment of high temperature, the insulating sealing sleeve that is locked does not because high temperature influence thereby the phenomenon of warping curling occurs, avoid the entry of rainwater, through the mode of insertion, avoid the fixed bolt for the loosening phenomenon that vibration produces, and through auxiliary installation mechanism can the fixed connection of fixed mechanism be provided fast, improved the efficiency when installing fixed mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the three-dimensional structure diagram of the utility model Figure 1 ;

[0021] Figure 2 It is the A place partial close -up of the utility model Figure 1 ;

[0022] Figure 3 It is the three-dimensional structure diagram of the utility model Figure 2 ;

[0023] Figure 4 It is the explosion view of the utility model.

[0024] The following is recorded: 1, insulating sealing sleeve;2, fixed mechanism;201, first arc fixed block;202, second arc fixed block;203, connecting shaft;204, bolt;205, through -hole;206, fixed seat;207, connecting rod;208, insertion rod;209, spring;3, auxiliary installation mechanism;301, trapezoidal block;302, round groove;303, fixed plate;304, positioning rod. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] The embodiments of the utility model will be described in further detail below in conjunction with the drawings.

[0027] Please refer to Figures 1-4 , the embodiment provides a kind of technical scheme: a waterproof sealing structure of pre-stranded type joint fitting, comprising: insulating sealing sleeve 1, fixed mechanism 2 and auxiliary installation mechanism 3;

[0028] The insulating sealing sleeve 1 is sleeved outside the cable connection, and can be attached to the outer wall of the cable connection through thermal expansion and contraction after being subjected to high-temperature baking of a spray gun, thereby achieving the effect of isolating rainwater from the outside and effectively sealing.

[0029] The fixing mechanism 2 is arranged on the outer wall of the two ends of the insulating sealing sleeve 1, and comprises a first arc-shaped fixing block 201 attached to the top of the two ends of the insulating sealing sleeve 1, a second arc-shaped fixing block 202 attached to the bottom of the two ends of the insulating sealing sleeve 1, a connecting shaft 203 rotatably connected to one end of the first arc-shaped fixing block 201 and the second arc-shaped fixing block 202, a bolt 204 inserted into the other end of the first arc-shaped fixing block 201 and the second arc-shaped fixing block 202, a through hole 205 formed in the screw rod of the bolt 204, a fixing seat 206 welded to the outer wall of the first arc-shaped fixing block 201, a connecting rod 207 slidably connected to the inside of the fixing seat 206, an insertion rod 208 welded to one end of the connecting rod 207, and a spring 209 sleeved on the outer wall of the insertion rod 208, the size of the insertion rod 208 being matched with the inner diameter of the through hole 205, and the auxiliary mounting mechanism 3 being arranged on the outer wall of the first arc-shaped fixing block 201.

[0030] The auxiliary mounting mechanism 3 comprises a trapezoidal block 301 welded to the outer wall of the first arc-shaped fixing block 201, a circular groove 302 formed in the top center of the trapezoidal block 301, a fixing plate 303 welded to the outer wall of the insertion rod 208, and a positioning rod 304 vertically and slidably connected to the inside of the fixing plate 303, the cross section of the trapezoidal block 301 being shaped as an isosceles trapezoid, and the diameter of the positioning rod 304 being matched with the inner diameter of the circular groove 302.

[0031] The implementation principle of the waterproof sealing structure of the pre-stranded joint fitting is as follows:

[0032] Firstly, the insulating sealing sleeve 1 is sleeved outside the cable connection, and is baked by a blowtorch, so that the insulating sealing sleeve 1 can be attached to the outer surface of the cable connection through thermal expansion and contraction, thereby achieving the effect of effectively sealing the cable connection, and the two ends of the insulating sealing sleeve 1 can be stably attached to the outside of the cable through the fixing mechanism 2, and the fixing mechanism 2 can be quickly operated through the auxiliary mounting mechanism 3.

[0033] Secondly, the horizontal sliding positioning rod 304 can drive the fixing plate 303 and the insertion rod 208 outside the positioning rod 304 to move horizontally synchronously during movement, and when the positioning rod 304 moves into the circular groove 302 of the trapezoidal block 301, the insertion rod 208 no longer contacts the bolt 204, so that the screw rod of the bolt 204 and the nut are screwed tightly.

[0034] Finally, the first arc-shaped fixed block 201 and the second arc-shaped fixed block 202 can be rotated through the connecting shaft 203, so that the first arc-shaped fixed block 201 and the second arc-shaped fixed block 202 are rotatably attached to the outside of the insulating sealing sleeve 1; at this time, the screw rod of the bolt 204 is inserted into the hole at the other end of the first arc-shaped fixed block 201 and the second arc-shaped fixed block 202, and the nut of the bolt 204 is screwed, so that the first arc-shaped fixed block 201 and the second arc-shaped fixed block 202 are fixed, thereby stably attaching the two ends of the insulating sealing sleeve 1 to the outside of the cable; at this time, the positioning rod 304 is vertically moved, so that the positioning rod 304 no longer limits the plug-in rod 208; at this time, the plug-in rod 208 is horizontally pushed and displaced through the spring 209 outside the fixing seat 206; the spring 209 can be stably pushed horizontally through the connecting rod 207 in the fixing seat 206; when the plug-in rod 208 is displaced into the through hole 205 of the bolt 204, the nut of the bolt 204 is positioned, so that the bolt 204 is not loosened due to vibration.

[0035] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A waterproof sealing structure for pre-stretched splice fittings, characterized in that, include: An insulating sealing sleeve (1) is fitted over the outside of the cable connection. The fixing mechanism (2) is set on the outer walls of both ends of the insulating sealing sleeve (1). The fixing mechanism (2) includes a first arc-shaped fixing block (201) attached to the top of both ends of the insulating sealing sleeve (1), a second arc-shaped fixing block (202) attached to the bottom of both ends of the insulating sealing sleeve (1), a connecting shaft (203) rotatably connected to one end of the first arc-shaped fixing block (201) and the second arc-shaped fixing block (202), a bolt (204) inserted into the other end of the first arc-shaped fixing block (201) and the second arc-shaped fixing block (202), a through hole (205) opened on the screw of the bolt (204), a fixing seat (206) welded to the outer wall of the first arc-shaped fixing block (201), a connecting rod (207) slidably connected to the inside of the fixing seat (206), a plug-in rod (208) welded to one end of the connecting rod (207), and a spring (209) sleeved on the outer wall of the plug-in rod (208). An auxiliary installation mechanism (3) is provided on the outer wall of the first arc-shaped fixing block (201).

2. The waterproof sealing structure of a pre-stretched splice fitting according to claim 1, characterized in that: The dimensions of the plug rod (208) are adapted to the inner diameter of the through hole (205).

3. The waterproof sealing structure of a pre-stretched splice fitting according to claim 1, characterized in that: The auxiliary installation mechanism (3) includes a trapezoidal block (301) welded to the outer wall of the first arc-shaped fixing block (201), and the trapezoidal block (301) has an isosceles trapezoidal shape in cross section.

4. The waterproof sealing structure of a pre-stretched splice fitting according to claim 3, characterized in that: The auxiliary installation mechanism (3) also includes a circular groove (302) located at the center of the top of the trapezoidal block (301).

5. The waterproof sealing structure of a pre-stretched splice fitting according to claim 4, characterized in that: The auxiliary installation mechanism (3) also includes a fixing plate (303) welded to the outer wall of the plug rod (208).

6. The waterproof sealing structure of a pre-stretched splice fitting according to claim 5, characterized in that: The auxiliary installation mechanism (3) also includes a positioning rod (304) that is vertically slidably connected inside the fixed plate (303).

7. The waterproof sealing structure of a pre-stretched splice fitting according to claim 6, characterized in that: The diameter of the positioning rod (304) is adapted to the inner diameter of the circular groove (302).

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