CN110445086A - A sealing device for a cable intermediate joint - Google Patents

Abstract

The application discloses a sealing device for a cable intermediate joint, which includes: a device body and a sealing mechanism. The device body is composed of two frames connected to each other. A threading hole. Each first threading hole is equipped with a sealing mechanism. The sealing mechanism includes: a rotating part, a first transmission assembly, a second transmission assembly, and a sealing assembly. The rotating part is a hollow structure and is rotatably arranged on the first threading hole, and the rotating part is provided with a second threading hole matched with the first threading hole, the first transmission assembly is rotationally connected with the rotating part, the second transmission assembly is threaded with the first transmission assembly, and the sealing assembly is set in the rotating part , and is slidably connected with the second transmission component, so that the sealing component moves obliquely, which solves the technical problem of difficult maintenance when the existing cable intermediate joint adopts the end wrapping sealing method.

Description

A sealing device for a cable intermediate joint

technical field

The present application relates to the technical field of cable fittings, in particular to a sealing device for a cable intermediate joint.

Background technique

With the rapid development of power cable line construction, it has been widely used as a cable intermediate joint to realize power cable connection.

Due to the special application scenario of the cable intermediate joint, the cable intermediate joint is required to have good sealing performance to ensure the safety of the cable. If the cable enters water or is damp, the internal structure of the cable will be affected by electrical action, which will accelerate the aging of the insulation and cause breakdown at weak points.

The sealing method of the existing cable intermediate joint is end wrapping, that is, wrapping adhesive tape with sealing performance and the like on the end of the cable intermediate joint. However, it is inconvenient to maintain the intermediate joint in this way. When the intermediate joint needs to be maintained, the windings at the ends need to be removed, which has the disadvantage of troublesome maintenance.

Contents of the invention

In view of this, the present application provides a sealing device for cable intermediate joints, which solves the technical problem of difficult maintenance when the existing cable intermediate joints adopt the sealing method of end wrapping.

The application provides a sealing device for a cable intermediate joint, including: a device main body and a sealing mechanism;

The main body of the device is formed by connecting two frames, and the main body of the device is a hollow structure, and first threading holes for cables to pass through are respectively provided on both sides;

Each of the first threading holes is equipped with the sealing mechanism;

The sealing mechanism includes: a rotating component, a first transmission assembly, a second transmission assembly, and a sealing assembly;

The rotating part is a hollow structure, which is rotatably arranged at the first threading hole, and a second threading hole matched with the first threading hole is arranged on the rotating part;

The first transmission assembly is rotatably connected to the rotating component;

The second transmission assembly is threadedly connected to the first transmission assembly;

The sealing assembly is arranged in the rotating component and is slidingly connected with the second transmission assembly, so that the sealing assembly can move obliquely.

Optionally,

The first transmission assembly includes: a rack, a gear and a rotating rod;

The rotating part is a hollow structure;

The rack is assembled on the inner side wall of the rotating part, and the shape of the rack matches the shape of the rotating part;

the gear meshes with the rack;

The rotating rod is assembled on the device main body, and the rotating rod is fixedly connected with the gear.

Optionally,

The second transmission assembly includes: a first connecting rod and a moving block;

The rotating rod is provided with an internal thread;

The first connecting rod is provided with a first external thread that cooperates with the internal thread;

The moving block is fixedly installed on the first connecting rod.

Optionally,

The sealing mechanism also includes a first vertical rod;

One end of the first vertical rod is slidably connected to the inner side wall of the rotating component, and the other end is connected to the first connecting rod.

Optionally,

The sealing assembly includes: a first sealing block;

The first sealing block is provided with a first groove for the sliding of the moving block, and the first end surface of the first sealing block matches the shape of the cable, and the second end surface matches the rotating part shape.

Optionally, the sealing assembly includes: a second sealing block and a third sealing block;

The second sealing block is provided with a second groove for the sliding of the moving block, and the first end surface of the second sealing block matches the shape of the cable, and the second end surface matches the third The shape of the sealing block;

The third dense block is fixedly installed in the rotating component, and the first end surface of the third sealing block matches the shape of the rotating component.

Optionally,

The sealing device also includes a clamping mechanism;

The clamping mechanism is assembled in the device main body;

The clamping mechanism includes: a second connecting rod, a third connecting rod, a slider, a fourth connecting rod and a clamping piece;

The second connecting rod is provided with a second external thread that cooperates with the internal thread, and the first external thread and the second external thread have opposite directions of rotation;

Both ends of the third connecting rod are respectively connected with the second connecting rod and the slider;

The slider is slidably arranged on the inner side wall of the device main body;

Both ends of the fourth connecting rod are respectively connected to the slider and the clamping member, and the fourth connecting rod and the third connecting rod are arranged at an acute angle.

Optionally,

The clamping mechanism also includes: a guide rod;

The guide rod is vertically arranged on the inner side wall of the device main body;

The clamping piece is slidably disposed on the guide rod.

Optionally,

The clamping piece is a curved plate;

The shape of the arc plate matches the shape of the cable.

Optionally,

The number of the first transmission assembly, the second transmission assembly, and the sealing assembly is two;

The two first transmission components are symmetrically distributed up and down;

The first transmission assembly, the second transmission assembly, and the sealing member are connected in one-to-one correspondence.

As can be seen from the above technical solutions, the present application has the following advantages:

A sealing device for a cable intermediate joint provided by the application includes: a device main body and a sealing mechanism. The device main body is composed of two frames connected to each other. A threading hole. Each first threading hole is equipped with a sealing mechanism. The sealing mechanism includes: a rotating part, a first transmission assembly, a second transmission assembly, and a sealing assembly. The rotating part is a hollow structure and is rotatably arranged on the first threading hole, and the rotating part is provided with a second threading hole matched with the first threading hole, the first transmission assembly is rotationally connected with the rotating part, the second transmission assembly is threaded with the first transmission assembly, and the sealing assembly is set in the rotating part , and is slidably connected with the second transmission component, so that the sealing component moves obliquely.

When using the sealing device of the cable intermediate joint in this application, open the two frames to install the cable intermediate joint and the cable wires. After installation, connect the two frames. The joint is arranged in the main body of the device, and the cables can be protruded through the first threading hole and the second threading hole. When the rotating part is twisted, the rotating part drives the first transmission assembly to rotate, and the first transmission assembly drives the second transmission assembly to move axially , the movement of the second transmission component drives the sealing component to move obliquely, gradually approaching the junction of the cable and the second threading hole, and sealing this place, thereby realizing the sealing of the entire joint. The parts can be opened to seal the assembly, which realizes the convenient disassembly of the seal assembly, thereby solving the technical problem of difficult maintenance when the existing cable intermediate joint adopts the sealing method of end wrapping.

Description of drawings

Figure 1 is a schematic structural view of a sealing device for a cable intermediate joint in an embodiment of the present application;

Fig. 2 is a partial enlarged view of place A in Fig. 1;

Fig. 3 is a partial enlarged view of place B in Fig. 2;

Fig. 4 is a schematic structural diagram of the second sealing block in the embodiment of the present application;

Fig. 5 is a schematic structural diagram of a third sealing block in the embodiment of the present application;

Fig. 6 is a schematic diagram of clamping of the clamping member in the embodiment of the present application;

Wherein, the reference signs are as follows:

1 device main body, 2 cables, 4 clamping parts, 5 rotating rod, 7 rotating parts, 18 first connecting rod, 6 moving block, 20 first vertical rod, 8 second sealing block, 9 third sealing block, 10 Slide block, 17 second connecting rods, 11 third connecting rods, 12 fourth connecting rods, 14 guide rods, 15 gears, 16 tooth racks.

Detailed ways

The embodiment of the present application provides a sealing device for a cable intermediate joint, which solves the technical problem of difficult maintenance when the existing cable intermediate joint adopts the sealing method of end wrapping.

The following will clearly and completely describe the technical solutions of the embodiments of the present application with reference to the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the embodiments of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer " and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, Constructed and operative in a particular orientation and therefore should not be construed as limiting to the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the embodiments of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a Replaceable connection, or integral connection, can be mechanical connection or electrical connection, direct connection or indirect connection through an intermediary, or internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application in specific situations.

First of all, some nouns or terms appearing in the process of describing the embodiments of this application are explained as follows:

Cable middle connector: the cable connector at the middle part of the 2-way cable, which generally realizes the connection of the 2-way cable.

An embodiment of the present application provides an embodiment of a sealing device for a cable intermediate joint, please refer to FIG. 1 to FIG. 6 for details.

The sealing device of the cable intermediate joint in this embodiment includes: a device main body 1 and a sealing mechanism. The device main body 1 is formed by connecting two frames, and the device main body 1 is a hollow structure. The first threading hole, each first threading hole is equipped with a sealing mechanism, the sealing mechanism includes: a rotating part 7, a first transmission assembly, a second transmission assembly, a sealing assembly, the rotating part 7 is a hollow structure, rotatably set At the first threading hole, and the rotating part 7 is provided with a second threading hole matching the first threading hole, the first transmission assembly and the rotating part 7 are rotationally connected, the second transmission assembly is screwed to the first transmission assembly, and sealed The component is arranged in the rotating part 7 and is slidably connected with the second transmission component, so that the sealing component moves obliquely.

It should be noted that the structure of the first transmission assembly can be varied, as long as the relative rotation between the first transmission assembly and the rotating component 7 can be realized. The structure of the second transmission assembly can also be varied, as long as it can convert the rotation of the first transmission assembly into the axial movement of the second transmission assembly.

It can be understood that the shape of the rotating component 7 can be various, for example, a column shape, a cuboid shape, or a five-pointed star shape, which can be selected by those skilled in the art according to needs, and is not specifically limited here.

In consideration of the problems in the above-mentioned background technology, when the sealing device in this embodiment is in use, the two frames are opened to install the cable intermediate joint and the cable wire 2. After installation, the two frames are butted together. The main body 1 is a hollow structure, and the intermediate connector of the cable is set in the main body 1 of the device. The cable 2 can protrude through the first threading hole and the second threading hole. When the rotating part 7 is twisted, the rotating part 7 drives the first transmission assembly to rotate , the first transmission assembly drives the second transmission assembly to move axially, and the movement of the second transmission assembly drives the sealing assembly to move obliquely, gradually approaching the junction of the cable 2 and the second threading hole, and sealing this place, thereby realizing the entire joint When the intermediate joint needs to be repaired, the sealing assembly can be opened by directly rotating the part 7, which realizes the convenient disassembly of the sealing assembly, thus solving the difficulty in maintenance when the existing cable intermediate joint adopts the end wrapping sealing method technical problems.

The above is the first embodiment of a sealing device for a cable intermediate joint provided by the embodiment of the present application, and the following is the second embodiment of a sealing device for a cable intermediate joint provided by the embodiment of the present application. For details, please refer to Figures 1 to 4 .

The sealing device of the cable intermediate joint in this embodiment includes: a device main body 1 and a sealing mechanism. The device main body 1 is formed by connecting two frames, and the device main body 1 is a hollow structure. The first threading hole, each first threading hole is equipped with a sealing mechanism, the sealing mechanism includes: a rotating part 7, a first transmission assembly, a second transmission assembly, a sealing assembly, the rotating part 7 is a hollow structure, rotatably set At the first threading hole, and the rotating part 7 is provided with a second threading hole matching the first threading hole, the first transmission assembly and the rotating part 7 are rotationally connected, the second transmission assembly is screwed to the first transmission assembly, and sealed The component is arranged in the rotating part 7 and is slidably connected with the second transmission component, so that the sealing component moves obliquely.

Specifically, the first transmission assembly in this embodiment includes: a rack 16 fitted to the hollow rotating part 7, a gear 15 meshing with the rack 16, and a rotating rod 5, the rotating rod 5 is arranged on the main body 1 of the device, and the gear Bar 16 is arranged on the inner sidewall of rotating part 7, and rotating rod 5 is fixedly connected with gear 15, and when rotating rotating part 7, gear 15 rotates on rack 16, and gear 15 drives rotating rod 5 to rotate. It can be understood that the first transmission assembly can also be other components with equivalent functions, which can be set by those skilled in the art according to needs, and will not be described in detail here.

Specifically, the second transmission assembly in this embodiment includes: a first connecting rod 18 and a moving block 6, the rotating rod 5 is provided with an internal thread, and the first connecting rod 18 is provided with an external thread mating with the internal thread to move The block 6 is fixedly connected with the first connecting rod 18. Therefore, when the rotating rod 5 rotates, the cooperation of the internal thread and the external thread makes the first connecting rod 18 move axially in the rotating rod 5, thereby driving the moving block 6 to move. It can be understood that the second transmission assembly can also be other components with equivalent functions, which can be set by those skilled in the art according to needs, and will not be described in detail here.

In order to enable the sealing assembly to move along a certain path, the sealing mechanism in this embodiment further includes: a first vertical rod 20, when set, one end of the first vertical rod 20 is slidably arranged on the inner side wall of the rotating part 7, The other end is connected with the first connecting rod 18 , and when the first connecting rod 18 moves, it moves along a certain direction under the action of the first vertical rod 20 .

Specifically, the structure of the sealing assembly can be various, and it can be a first sealing block integrally formed, and a first groove for sliding the moving block 6 is opened in the first sealing block, and the first end surface is matched with the cable 2 The shape of the second end surface matches the shape of the rotating part 7 . When the moving block 6 moves axially, due to the limitation of the first groove, the moving block 6 drives the entire seal to move quickly and tilts, and finally clamps the cable 2, and cooperates with the shape of the rotating part 7 to make the second threading hole tight and seamless . It can also be a combination of two sealing blocks as shown in Figure 1, assuming that they are respectively the second sealing block 8 and the second sealing block 8, and a second groove for sliding of the moving block 6 is opened in the second sealing block 8 , and the first end face matches the shape of the cable 2 to realize the tight and seamless contact between the second sealing block 8 and the cable 2, and the second end face matches the shape of the third sealing block 9 to realize the connection between the third sealing block 9 and the first The two sealing blocks 8 are closely matched, the third dense block is fixedly installed in the rotating part 7 , and the first end surface matches the shape of the rotating part 7 to realize the tight fitting between the third sealing block 9 and the rotating part 7 .

It can be understood that the materials of the above-mentioned sealing blocks of various shapes can be rubber, plastic or other composite materials with sealing properties, which can be selected by those skilled in the art according to needs, and no specific limitation is made here.

Further, in order to prevent the cable 2 from being loosened due to the action of force when the cable 2 is pulled by an external force, the sealing device in this embodiment also includes: a clamping mechanism, which is assembled on the device In the main body 1, the clamping mechanism includes: a second connecting rod 17, a third connecting rod 11, a slider 10, a fourth connecting rod 12 and a clamping piece 4, and the second connecting rod 17 is provided with a first connecting rod that cooperates with an internal thread. Two external threads, and the direction of rotation of the first external thread and the second external thread is opposite, the two ends of the third connecting rod 11 are respectively connected with the second connecting rod 17 and the slider 10, and the slider 10 is slidably arranged on the main body of the device 1, both ends of the fourth connecting rod 12 are respectively connected to the slider 10 and the clamping member 4.

When twisting the rotating part 7, the rotation of the rotating rod 5 drives the second connecting rod 17 to move axially, the second connecting rod 17 moves axially, and the third connecting rod 11 pushes the slider 10 to slide, and the sliding of the slider 10 The clamping part 4 is generally moved vertically through the fourth connecting rod 12 , so as to clamp the cable 2 .

Specifically, in order to enable the clamping member 4 to move in the vertical direction, the clamping mechanism in this embodiment also includes a guide rod 14, which is vertically arranged on the inner side wall of the device main body 1, and clamps The member 4 is slidably disposed on the guide rod 14 .

Specifically, in order to make the clamping effect of the clamping part 4 better, the clamping part 4 is an arc-shaped plate, and the shape of the arc-shaped plate matches the shape of the cable 2 . It can be understood that the clamping member 4 can also be a mechanism similar to a manipulator, or can be other components with a clamping function, which will not be exemplified here.

In order to make the sealing performance better, the number of the first transmission assembly, the second transmission assembly, and the sealing assembly are two, and the two first transmission assemblies are symmetrically distributed up and down. Components and seals are connected in one-to-one correspondence.

It can be understood that when the sealing component is the first sealing block, the corresponding sealing component is shaped like two irregular trapezoids similar to trapezoids, and the sum of their widest parts is the same as that of the rotating part 7 . When the sealing assembly is a combination of the second sealing block 8 and the third sealing block 9 , there are two of them each, and the widest part of the two second sealing blocks 8 is the same as the width of the rotating part 7 .

The movement principle of the sealing device in this embodiment is as follows: the two cables 2 are respectively penetrated through the two frames, and the two cables 2 are fixedly connected through a joint. The joint includes a male head and a female head, and the two frames are screwed together. Twist the two rotating parts 7, because the ring rack 16 and the gear 15 are provided, the rotating parts 7 drive the corresponding two rotating rods 5 to rotate, because the second connecting rod 17 and the first connecting rod 18 are provided, and the second connecting rod 17 The two connecting rods 17 and the corresponding first connecting rods 18 are screwed in the opposite direction, so that the second connecting rods 17 and the corresponding first connecting rods 18 are far away from each other. Rod 12, so that the movement of the second connecting rod 17 pushes the slider 10 through the third connecting rod 11. Utilizing the principle of leverage, the slider 10 drives the clamping part 4 to move through the corresponding fourth connecting rod 12, and is located in the same vertical position. The two arc-shaped plates on the straight axis fix the corresponding cable 2, which can prevent the cable 2 from being pulled by force and cause the joint to loosen. The third sealing block 9 and the second sealing block 8, so that the first connecting rod 18 pushes the corresponding second sealing block 8 to move obliquely, and the two sealing blocks on the same vertical axis will fix the corresponding cable 2 and The corresponding ring-shaped arc blocks are sealed and can be used after installation. When disassembling and maintaining, reversely twist the two rotating parts 7 so that the two arc-shaped plates and the two sealing blocks are separated from the corresponding cables 2, and the two frames are disassembled , disconnect the two cables 2.

When the cable intermediate joint sealing device in this embodiment is in use, the two frames are opened to install the cable intermediate joint and the cable wire 2. After installation, the two frames are butted. At this time, since the main body 1 of the device is a hollow structure, The cable intermediate joint is set in the main body 1 of the device, and the cable 2 can protrude through the first threading hole and the second threading hole. When the rotating part 7 is twisted, the rotating part 7 drives the first transmission assembly to rotate, and the first transmission assembly drives The second transmission assembly moves axially, and the movement of the second transmission assembly drives the sealing assembly to move obliquely, gradually approaching the junction of the cable 2 and the second threading hole, and sealing this place, thereby realizing the sealing of the entire joint. When the intermediate joint is maintained, the sealing assembly can be opened by directly rotating the part 7, which realizes the convenient disassembly of the sealing assembly, thereby solving the technical problem of difficult maintenance when the existing cable intermediate joint adopts the end wrapping sealing method.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions described in each embodiment are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application.

Claims (10)

1. a kind of sealing device of cable intermediate joint characterized by comprising apparatus main body and sealing mechanism；

Described device main body is connected to each other by two frames and is constituted, and described device main body is hollow structure, and two sides are respectively arranged with The first threading hole passed through for cable；

The sealing mechanism is equipped at each first threading hole；

The sealing mechanism includes: rotary part, the first transmission component, the second transmission component, seal assembly；

The rotary part is hollow structure, is rotatablely arranged at first threading hole, and set on the rotary part It is equipped with the second threading hole with first threading hole cooperation；

First transmission component and rotary part rotation connection；

Second transmission component and first transmission component are threadedly coupled；

It in the seal assembly setting and the rotary part, and is slidably connected with second transmission component, so that described Seal assembly inclination movement.

2. the sealing device of cable intermediate joint according to claim 1, which is characterized in that the first transmission component packet It includes: rack gear, gear and rotating bar；

The rotary part is hollow structure；

The rack gear is assemblied on the inner sidewall of the rotary part, and the shape of the rack gear is matched with the rotary part Shape；

The gear and rack gear engagement；

The rotating bar is assemblied in described device main body, and the rotating bar is fixedly connected with the gear.

3. the sealing device of cable intermediate joint according to claim 2, which is characterized in that the second transmission component packet It includes: first connecting rod and movable block；

Internal screw thread is provided in the rotating bar；

The first external screw thread with the screw-internal thread fit is provided on the first connecting rod；

The movable block is fixedly installed on the first connecting rod.

4. the sealing device of cable intermediate joint according to claim 3, which is characterized in that the sealing mechanism also wraps It includes: the first vertical bar；

One end of first vertical bar is slideably connect with the inner sidewall of the rotary part, the other end and the first connecting rod Connection.

5. the sealing device of cable intermediate joint according to claim 3, which is characterized in that the seal assembly includes: First sealing block；

The first groove for movable block sliding, and the first of first sealing block are offered in first sealing block End face is matched with the shape of the cable, and second end face is matched with the shape of the rotary part.

6. the sealing device of cable intermediate joint according to claim 3, which is characterized in that the seal assembly includes: Second sealing block and third sealing block；

The second groove for movable block sliding, and the first of second sealing block are offered in second sealing block End face is matched with the shape of the cable, and second end face is matched with the shape of the third sealing block；

Close piece of the third is fixedly installed in the rotary part, and the first end face of the third sealing block be matched with it is described The shape of rotary part.

7. the sealing device of cable intermediate joint according to claim 3, which is characterized in that the sealing device further includes Clamping device；

The clamping device is assemblied in described device main body；

The clamping device includes: second connecting rod, third connecting rod, sliding block, fourth link and clamping piece；

The second external screw thread with the screw-internal thread fit, and first external screw thread and described are provided on the second connecting rod Two is externally threaded oppositely oriented；

The both ends of the third connecting rod are connect with the second connecting rod, the sliding block respectively；

The sliding block is slidably disposed on the inner sidewall of described device main body；

The both ends of the fourth link are connect with the sliding block, the clamping piece respectively, and the fourth link and the third Connecting rod setting at an acute angle.

8. the sealing device of cable intermediate joint according to claim 7, which is characterized in that the clamping device also wraps It includes: guide rod；

The guide rod is vertically arranged on the inner sidewall of described device main body；

The clamping piece is slidably disposed on the guide rod.

9. the sealing device of cable intermediate joint according to claim 8, which is characterized in that the clamping piece is arc Plate；

The shape of the arc panel is matched with the shape of the cable.

10. the sealing device of cable intermediate joint according to any one of claim 1 to 9, which is characterized in that described One transmission component, second transmission component, the seal assembly quantity be two；

Two the first transmission component distributions symmetrical above and below；

It is that two first transmission components, the second transmission component, the sealing element connect one to one.