CN216672576U - Cold-contraction intermediate joint - Google Patents

Abstract

The utility model relates to a cold-contraction intermediate joint which comprises a joint body, a connecting pipe and a fixed cylinder, wherein the connecting pipe is arranged on the joint body; the connecting pipe is positioned in the joint body, and the pair of fixed cylinders are symmetrically and fixedly connected at two ends of the joint body; the surface of the fixed cylinder is connected with a screw cylinder through threads; a sliding groove is formed in the wall body of the side surface of the fixed cylinder; a push rod is connected in the sliding groove in a sliding manner; a ladder-shaped ring is fixedly connected to the inner side wall of the screw cylinder; the one end rigid coupling that the spiral shell section of thick bamboo was kept away from to the push rod has annular rubber bag, through rotatory spiral shell section of thick bamboo to this makes trapezoidal ring extrusion push rod, thereby makes annular rubber bag and cable surface laminate, fixes the cable with this, can improve the fixed effect to the cable through this setting, and annular rubber bag warp and cable surface laminate, with this tip that can connect the body, thereby reduces steam and gets into in the gap of this end of body of joint.

Description

Cold-contraction intermediate joint

Technical Field

The utility model relates to the field of cable connecting accessories, in particular to a cold-shrinkage intermediate joint.

Background

The cold-contraction intermediate joint is also called as a cold-contraction cable accessory and mainly comprises a pipe body made of elastic materials and an internal spiral support, and has the characteristics of small volume and convenient and rapid operation.

In the prior art, when the cold-shrink intermediate joint is installed, a worker needs to firstly sleeve two ends of a cable into a connecting pipe, then extrude a metal connecting pipe through a tool, fix the metal connecting pipe in a compression joint mode, then draw out a support inside the cold-shrink intermediate joint, and then shrink and attach the cold-shrink intermediate joint to the surface of the cable in a shrinking mode so as to complete installation of the cold-shrink intermediate joint; however, the end part of the existing cold-shrink intermediate joint has poor sealing performance, and when the cold-shrink intermediate joint is used for a long time, external water vapor can enter the cold-shrink intermediate joint from a gap at the end part, so that the insulation performance of a cable connection part is influenced; accordingly, a cold-shrink intermediate joint has been proposed to address the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model relates to a cold-contraction intermediate joint which comprises a joint body, a connecting pipe and a fixed cylinder, wherein the connecting pipe is arranged on the joint body; the connecting pipe is positioned in the joint body, and the pair of fixed cylinders are symmetrically and fixedly connected to two ends of the joint body; the surface of the fixed cylinder is connected with a screw cylinder through threads; a sliding groove is formed in the wall body of the side surface of the fixed cylinder; a push rod is connected in the sliding groove in a sliding manner; a ladder-shaped ring is fixedly connected to the inner side wall of the screw cylinder; one end of the push rod, which is far away from the screw cylinder, is fixedly connected with an annular rubber bag, so that the end part of the joint body can be sealed, and water vapor is prevented from entering from a gap at the end part of the joint body, and the influence on the insulation effect is reduced.

Preferably, the surface of the fixed cylinder is fixedly connected with a group of piston cylinders; a piston rod is connected in the piston cylinder in a sliding manner; the rodless cavity of the piston cylinder is communicated with the annular rubber bag through the air pipe, so that the sealing effect can be improved, and the water vapor is reduced from entering the connector body.

Preferably, the surface of the fixed cylinder is fixedly connected with a fixed ring; a rubber ring is fixedly connected to one side of the fixing ring, which is close to the screw cylinder; the fixed ring is positioned between the screw cylinder and the piston cylinder, and the rubber ring is used for sealing the end part of the screw cylinder, so that water vapor is reduced from entering the sliding groove from a gap at the end part of the screw cylinder.

Preferably, a rubber sleeve is fixedly connected to the side surface of the screw cylinder; the surface of the rubber sleeve is sleeved with an annular metal wire; the annular metal wire is sleeved with a rotating ring; a square cylinder is fixedly connected to the top end of the rotating ring; a square rod is connected in the square barrel in a sliding manner; the square rod is designed into a T-shaped structure, so that a sealing effect can be achieved, the end part of the joint body is further sealed, and water vapor is reduced from entering the joint body.

Preferably, a groove is formed in the side face of the sliding groove; a support plate is fixedly connected to one end of the push rod, which is far away from the annular rubber bag; an elastic sheet is fixedly connected between the side surface of the support plate and the side wall of the groove; the spring is arranged in the rodless cavity of the piston cylinder, the push rod is supported through the spring plate and the fixing ring, the push rod is not prone to moving when not extruded, the annular rubber bag is supported, and therefore the annular rubber bag can be used for being convenient for workers to string and sleeve cables and is convenient to install.

Preferably, the surface of the screw cylinder is provided with a clamping groove; an annular groove is formed in the side face of the sliding groove; an arc-shaped rod is connected in the annular groove in a sliding manner; the top end of the square rod is hinged with a handle; the handle is provided with a through hole at the position corresponding to the arc-shaped rod; the surface of the arc rod is fixedly connected with a pull rod; the pull rod penetrates through the annular groove and is in sliding connection with the annular groove, so that the handle can be fixed, the rotating ring is fixed and is not prone to rotating, the looseness of the annular metal wire is reduced, and the influence on the sealing effect is reduced.

Preferably, a connecting ring is fixedly connected inside the through hole, and the arc-shaped rod penetrates through the connecting ring and is in sliding connection with the connecting ring; the connecting ring is made of rubber materials, so that the arc-shaped rod is locked and fixed to be not easy to slide.

The utility model has the advantages that:

1. the fixing device comprises a fixing barrel, a screw barrel, a push rod, a ladder-shaped ring and an annular rubber bag, wherein the ladder-shaped ring is arranged on the fixing barrel, the screw barrel is arranged on the outer side of the fixing barrel, the push rod is connected with the outer side of the fixing barrel, the ladder-shaped ring is arranged on the outer side of the fixing barrel, the outer side of the fixing barrel is provided with a plurality of elastic pieces, the elastic pieces are connected with the outer side of the fixing barrel, the outer side of the fixing barrel is provided with a plurality of elastic pieces, and the elastic pieces are connected with the outer side of the fixing barrel.

2. According to the utility model, the rubber sleeve, the rotating ring, the square rod and the square cylinder are arranged, when the connector is installed, the square rod is manually rotated to drive the square cylinder and the rotating ring at the bottom end of the square rod to rotate, so that the top of the annular metal wire is bent and wound, the annular metal wire is contracted, the rubber sleeve is extruded to contract, and then the rubber sleeve is attached to the surface of the cable, so that the sealing effect can be achieved, the end part of the connector body is further sealed, and water vapor is reduced from entering the connector body.

The above description of the present invention is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clearly understood by those skilled in the art, further, the present invention can be implemented according to the contents described in the text and the drawings of the present application, and in order to make the above objects, other objects, features, and advantages of the present application more easily understood, the following description will be made in conjunction with the detailed description of the present application and the drawings.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of particular embodiments of the present application, as well as others related thereto, and are not to be construed as limiting the application.

FIG. 1 is a schematic structural diagram of a joint body according to the first embodiment;

FIG. 2 is a schematic structural diagram of a fixed cylinder according to the first embodiment;

FIG. 3 is a schematic side view of the screw barrel according to the first embodiment;

FIG. 4 is a schematic structural view of a square tube according to the first embodiment;

fig. 5 is a schematic structural view of a stop collar according to a second embodiment.

In the figure:

11. a connector body; 12. a connecting pipe; 13. a fixed cylinder; 14. a screw cylinder; 15. a ladder shaped ring; 16. a push rod; 17. an annular rubber bladder; 21. a piston cylinder; 22. a piston rod; 31. a fixing ring; 32. a rubber ring; 41. a loop wire; 42. a rotating ring; 43. a square cylinder; 44. a square rod; 45. a rubber sleeve; 51. a support plate; 52. a spring plate; 61. a grip; 62. an arcuate bar; 63. a pull rod; 7. a limiting ring; 8. and (7) connecting rings.

Detailed Description

In order to explain in detail possible application scenarios, technical principles, practical embodiments, and the like of the present application, the following detailed description is given with reference to the accompanying drawings in conjunction with the listed embodiments. The embodiments described herein are merely for more clearly illustrating the technical solutions of the present application, and therefore, the embodiments are only used as examples, and the scope of the present application is not limited thereby.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".

In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.

As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. Furthermore, the description of embodiments herein of the present application of the term "plurality" means more than two (including two), and expressions relating to "plurality" similar thereto are also to be understood, such as "plurality", etc., unless explicitly defined otherwise.

In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are only for convenience of describing the specific embodiments of the present application or for the convenience of the reader, and do not indicate or imply that the device or component in question must have a specific position, a specific orientation, or be constructed or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application are to be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated arrangement; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.

Example one

Referring to fig. 1-4, a cold-shrink intermediate joint includes a joint body 11, a connecting pipe 12 and a fixing cylinder 13; the connecting pipe 12 is positioned inside the joint body 11, and the pair of fixed cylinders 13 are symmetrically and fixedly connected to two ends of the joint body 11; the surface of the fixed cylinder 13 is connected with a screw cylinder 14 through threads; a sliding groove is formed in the wall body of the side surface of the fixed cylinder 13; a push rod 16 is connected in the sliding groove in a sliding manner; a ladder-shaped ring 15 is fixedly connected to the inner side wall of the screw cylinder 14; an annular rubber bag 17 is fixedly connected to one end of the push rod 16 far away from the screw cylinder 14; when the cable fixing device is installed, firstly, the surface of the cable is sleeved on the joint body 11, then, the connecting pipe 12 is sleeved on the joint of the cable, then, the connecting pipe 12 is extruded through a tool, the connecting pipe is pressed and fixed, finally, a support inside the joint body 11 is drawn out, the joint body 11 is contracted and fixed, after the fixing is completed, the screw barrel 14 is rotated, then, the screw barrel 14 is close to the fixing barrel 13 through threads, the ladder-shaped ring 15 is driven to extrude the end part of the push rod 16, then, one end of the push rod 16, which is positioned in the fixing barrel 13, drives the annular rubber bag 17 to move so as to be attached to the surface of the cable, so that the cable is fixed, the fixing effect on the cable can be improved through the arrangement, the annular rubber bag 17 deforms and is attached to the surface of the cable, so that the end part of the joint body 11 can be sealed, thereby, the water vapor entering from the gap at the end part of the joint body 11 is reduced, and the influence on the insulation effect is reduced, the ladder ring 15 is annular and has a trapezoidal cross section.

A group of piston cylinders 21 are fixedly connected to the surface of the fixed cylinder 13; a piston rod 22 is connected in the piston cylinder 21 in a sliding manner; the rodless cavity of the piston cylinder 21 is communicated with the annular rubber bag 17 through an air pipe; the surface of the fixed cylinder 13 is fixedly connected with a fixed ring 31; a rubber ring 32 is fixedly connected to one side of the fixing ring 31 close to the screw cylinder 14; the fixed ring 31 is positioned between the screw cylinder 14 and the piston cylinder 21; a groove is formed in the side face of the sliding groove; a support plate 51 is fixedly connected to one end of the push rod 16 far away from the annular rubber bag 17; an elastic sheet 52 is fixedly connected between the side surface of the support plate 51 and the side wall of the groove; a spring is arranged in a rodless cavity of the piston cylinder 21; when the screw cylinder 14 moves, the screw cylinder 14 can extrude the piston rod 22, so that gas in the piston cylinder 21 is extruded to enter the annular rubber bag 17, the air pipe is used for transporting gas, then the annular rubber bag 17 expands, the inner diameter of the annular rubber bag 17 is contracted, the fitting degree with the surface of a cable is improved, the annular rubber bag 17 is expanded, the sealing effect can be improved, and water vapor is prevented from entering the interior of the joint body 11, the push rod 16 is supported by arranging the elastic sheet 52 and the fixing ring 31, so that the push rod 16 is not easy to move when not extruded, the annular rubber bag 17 is supported at the same time, so that the cable can be conveniently stringed and sleeved by a worker, the installation is convenient, the piston rod 22 can be supported by arranging the spring, the rubber ring 32 is used for sealing the end part of the screw cylinder 14, so that water vapor is prevented from entering the sliding groove from a gap at the end part of the screw cylinder 14, and further into the fixed cylinder 13 and the joint body 11 along the sliding groove, whereby the sealing effect can be improved.

A rubber sleeve 45 is fixedly connected to the side surface of the screw cylinder 14; the surface of the rubber sleeve 45 is sleeved with an annular metal wire 41; the annular metal wire 41 is sleeved with a rotating ring 42; the top end of the rotating ring 42 is fixedly connected with a square cylinder 43; a square rod 44 is connected in the square cylinder 43 in a sliding manner; the square rod 44 is designed to be in a T-shaped structure; after the screw tube 14 is fixed, the square rod 44 is rotated at the moment, the square tube 43 and the rotating ring 42 at the bottom end of the square rod 44 are driven to rotate, so that the top of the annular metal wire 41 is bent and wound, the annular metal wire 41 is contracted, the rubber sleeve 45 is extruded to be contracted, and then the rubber sleeve is attached to the surface of a cable, so that the sealing effect can be achieved, the end part of the joint body 11 is further sealed, and water vapor is reduced to enter the joint body 11.

The surface of the screw barrel 14 is provided with a clamping groove; an annular groove is formed in the side face of the sliding groove; an arc-shaped rod 62 is connected in the annular groove in a sliding manner; the top end of the square rod 44 is hinged with a handle 61; through holes are formed in the positions, corresponding to the arc-shaped rods 62, of the handle 61; a pull rod 63 is fixedly connected to the surface of the arc-shaped rod 62; the pull rod 63 penetrates through the annular groove and is connected with the annular groove in a sliding mode; when using, through setting up handle 61, with this can be convenient for carry out square pole 44, thereby be convenient for the staff installs, when the installation is accomplished, handle 61 is rotatory, make it put into the draw-in groove, later pulling pull rod 63, it slides in the ring channel to drive arc pole 62, thereby make the 62 tip of arc pole pass the through-hole, with this can fix handle 61, thereby fix swivel ring 42, make it difficult emergence rotation, and then reduce annular wire 41 and become flexible, reduce the influence to sealed effect.

A connecting ring 8 is fixedly connected inside the through hole, and the arc-shaped rod penetrates through the connecting ring 8 and is in sliding connection with the connecting ring; the connecting ring 8 is made of rubber, when the device is used, the end part of the arc-shaped rod penetrates through the connecting ring in the through hole, and then the connecting ring contracts under the elastic action of the connecting ring, so that the arc-shaped rod is simply locked and fixed.

Example two

Referring to fig. 5, in a first comparative example, as another embodiment of the present invention, a limiting ring 7 is fixedly connected to a side of the rubber sleeve 45 away from the screw barrel 14, and when in use, the limiting ring 7 blocks an end of the rubber sleeve 45, so as to block the sliding of the annular metal wire 41, so that the annular metal wire is not easy to slip off from the rubber sleeve 45, thereby facilitating the tightening of the annular metal wire 41 and facilitating the installation of a worker.

The working principle is that when the cable fixing device is installed, the cable surface is firstly sleeved on the joint body 11, then the connecting pipe 12 is sleeved at the joint of the cable, then the connecting pipe 12 is extruded through a tool, the connecting pipe is pressed and fixed, finally a support inside the joint body 11 is drawn out, the joint body 11 is contracted and fixed, after the fixing is completed, the screw barrel 14 is rotated, then the screw barrel 14 approaches to the fixing barrel 13 through threads, the ladder-shaped ring 15 is driven to extrude the end part of the push rod 16, then the push rod 16 is positioned at one end in the fixing barrel 13 to drive the annular rubber bag 17 to move so as to be attached to the cable surface, the cable is fixed, the fixing effect on the cable can be improved through the arrangement, the annular rubber bag 17 deforms and is attached to the cable surface, so that the end part of the joint body 11 can be sealed, and water vapor is prevented from entering from gaps at the end part of the joint body 11, thereby reducing the influence on the insulation effect, the ladder-shaped ring 15 is annular, the section is trapezoidal, when the screw tube 14 moves, the screw tube 14 can extrude the piston rod 22, the gas in the piston cylinder 21 is extruded to enter the annular rubber bag 17, the air pipe is used for transporting the gas, then the annular rubber bag 17 expands, so that the inner diameter of the annular rubber bag 17 contracts, so that the attaching degree with the surface of the cable is improved, the annular rubber bag 17 expands more, so that the sealing effect can be improved, the water vapor is reduced to enter the joint body 11, the push rod 16 is supported by arranging the elastic sheet 52 and the fixing ring 31, so that the push rod 16 is not easy to move when not extruded, and the annular rubber bag 17 is supported, so that the cable can be conveniently strung by a worker and the installation is convenient, by arranging the spring, the piston rod 22 can be supported, the rubber ring 32 is used for sealing the end part of the screw tube 14, thereby reducing the water vapor entering the sliding groove from the gap at the end part of the screw cylinder 14, and further entering the fixed cylinder 13 and the joint body 11 along the sliding groove, so as to improve the sealing effect, after the screw cylinder 14 is fixed, the square rod 44 is rotated at the moment, so as to drive the square cylinder 43 and the rotating ring 42 at the bottom end of the square rod 44 to rotate, thereby enabling the top of the annular metal wire 41 to be bent and wound, so as to enable the annular metal wire 41 to shrink, thereby extruding the rubber sleeve 45 to shrink, and then enabling the rubber sleeve to be attached to the surface of the cable, so as to achieve the sealing effect, further sealing the end part of the joint body 11, reducing the water vapor entering the joint body 11, when the installation is completed, rotating the grip 61 to enable the grip 61 to be placed in the clamping groove, then pulling the pull rod 63 to drive the arc rod 62 to slide in the annular groove, thereby enabling the end part of the arc rod 62 to pass through the through hole, so as to fix the grip 61, thereby fixing the rotating ring 42 to prevent the rotating ring from rotating, reducing the looseness of the annular metal wire 41 and reducing the influence on the sealing effect.

It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.

Claims (8)

1. A shrinkage intermediate head which is characterized in that: comprises a joint body (11), a connecting pipe (12) and a fixed cylinder (13); the connecting pipe (12) is positioned inside the joint body (11), and the pair of fixed cylinders (13) are symmetrically and fixedly connected to two ends of the joint body (11); the surface of the fixed cylinder (13) is connected with a screw cylinder (14) through threads; a sliding groove is formed in the wall body of the side surface of the fixed cylinder (13); a push rod (16) is connected in the sliding groove in a sliding way; a ladder-shaped ring (15) is fixedly connected to the inner side wall of the screw cylinder (14); one end of the push rod (16) far away from the screw cylinder (14) is fixedly connected with an annular rubber bag (17).

2. The cold shrink intermediate joint of claim 1, wherein: a group of piston cylinders (21) are fixedly connected to the surface of the fixed cylinder (13); a piston rod (22) is connected in the piston cylinder (21) in a sliding manner; the rodless cavity of the piston cylinder (21) is communicated with the annular rubber bag (17) through an air pipe.

3. The cold shrink intermediate joint of claim 2, wherein: the surface of the fixed cylinder (13) is fixedly connected with a fixed ring (31); a rubber ring (32) is fixedly connected to one side of the fixing ring (31) close to the screw cylinder (14); the fixing ring (31) is positioned between the screw cylinder (14) and the piston cylinder (21).

4. A cold shrink intermediate joint as set forth in claim 3, wherein: a rubber sleeve (45) is fixedly connected to the side surface of the screw cylinder (14); the surface of the rubber sleeve (45) is sleeved with an annular metal wire (41); the annular metal wire (41) is sleeved with a rotating ring (42); the top end of the rotating ring (42) is fixedly connected with a square cylinder (43); a square rod (44) is connected in the square cylinder (43) in a sliding manner; the square rod (44) is designed to be of a T-shaped structure.

5. The cold shrink intermediate joint according to claim 4, wherein: a groove is formed in the side face of the sliding groove; a support plate (51) is fixedly connected to one end of the push rod (16) far away from the annular rubber bag (17); an elastic sheet (52) is fixedly connected between the side surface of the support plate (51) and the side wall of the groove; a spring is arranged in a rodless cavity of the piston cylinder (21).

6. The cold shrink intermediate joint according to claim 5, wherein: the surface of the screw cylinder (14) is provided with a clamping groove; an annular groove is formed in the side face of the sliding groove; an arc-shaped rod (62) is connected in the annular groove in a sliding manner; the top end of the square rod (44) is hinged with a grip (61); the handle (61) is provided with a through hole at the position corresponding to the arc-shaped rod (62); a pull rod (63) is fixedly connected to the surface of the arc-shaped rod (62); the pull rod (63) penetrates through the annular groove and is connected with the annular groove in a sliding mode.

7. The cold shrink intermediate joint according to claim 6, wherein: a connecting ring (8) is fixedly connected inside the through hole, and the arc-shaped rod penetrates through the connecting ring (8) and is in sliding connection with the connecting ring.

8. The cold shrink intermediate joint according to claim 7, wherein: the connecting ring (8) is made of rubber.

Images