CN216530509U

CN216530509U - Shrinkage intermediate head

Info

Publication number: CN216530509U
Application number: CN202123108361.2U
Authority: CN
Inventors: 沈晓华
Original assignee: Wujiang Huading Heat Shrink Products Co ltd
Current assignee: Wujiang Huading Heat Shrink Products Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-13
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to a shrinkage intermediate head, relate to intermediate head technical field, it is poor in order to solve common intermediate head leakproofness, moisture gets into inside the joint easily, cause the problem of potential safety hazard, it includes the joint gum cover and is used for the prefab that struts the joint gum cover, the inside screw thread section that is provided with of joint gum cover, prefab and joint gum cover threaded connection, joint gum cover both ends are provided with the sealed head that is used for improving the inside leakproofness of joint gum cover, sealed head includes connecting portion and sealing, connecting portion insert establish in the joint gum cover, sealing sets up in the one end that connecting portion deviates from the joint gum cover, sealing one end wall offsets with joint gum cover end wall, sealed head runs through along its length direction and has seted up the wiring mouth, wiring mouth and the coaxial setting of sealed head. This application has the leakproofness that improves joint gum cover both ends, improves the easy entering of moisture and connects the gum cover to make the circuit short circuit, cause the problem of potential safety hazard, improve the effect that connects the gum cover security.

Description

Shrinkage intermediate head

Technical Field

The application relates to the technical field of intermediate joints, in particular to a cold-contraction intermediate joint.

Background

An intermediate joint is a cable accessory that protects the cable connection.

In the present day of the rapid development of society, electric power is rapidly popularized, and for some long-distance electric power transportation, the total length of the used electric wire is too long, the electric wire is easy to break by using one cable, and the whole cable needs to be replaced after being damaged, so that a form of splicing a plurality of cables is adopted at the present stage, and in the connection nodes, the nodes need to be protected by using intermediate joints.

The existing intermediate joints have the problem that the cable connection position inside the joint is not completely protected, the intermediate joints are not tightly connected with the cable, so that the air tightness of the intermediate joints is poor, moisture permeation is easy to occur, and the problem of short circuit of a circuit is caused, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In order to improve the leakproofness of joint gum cover, improve the infiltration of moisture and arouse the circuit short circuit, cause the problem of potential safety hazard, this application provides a shrinkage intermediate head.

The application provides a shrinkage intermediate head adopts following technical scheme:

the utility model provides a shrinkage intermediate head, includes the joint gum cover and is used for the prefab that the joint gum cover struts, the inside screw thread section that is provided with of joint gum cover, prefab and joint gum cover threaded connection, joint gum cover both ends are provided with the sealed head that is used for improving the inside leakproofness of joint gum cover, sealed head includes connecting portion and sealing, connecting portion insert establish in the joint gum cover, the sealing sets up in the one end that connecting portion deviate from the joint gum cover, sealing one end wall offsets with the joint gum cover end wall, sealed head runs through along its length direction and has seted up the wiring mouth, the wiring mouth sets up with sealed head is coaxial.

Through adopting above-mentioned technical scheme, insert the joint of cable and establish in the joint gum cover, remove the back with the prefab again, the joint gum cover can produce the shrink, the shrink power that connects the gum cover fastens cable joint, after accomplishing, insert respectively with sealed head and establish into joint gum cover both ends, seal joint gum cover both ends, improve the inside leakproofness of joint gum cover, thereby it connects inside the gum cover to improve moisture entering, make the circuit short circuit, cause the problem of potential safety hazard, the practicality and the security of this application have been improved.

Optionally, a plurality of clamping blocks are arranged on the periphery of the connecting portion, a plurality of clamping grooves matched with the clamping blocks are formed in the inner wall of the joint rubber sleeve, and the clamping blocks are embedded in the corresponding clamping grooves.

By adopting the technical scheme, the joint block and the joint groove are arranged, so that the connection between the connecting part and the joint rubber sleeve is more stable, the circumferential freedom degree of the connecting part can be effectively limited, and the problem of the joint rubber sleeve at the sliding position of the connecting part is reduced; simultaneously the setting in joint piece and joint groove sets up sealed head and joint gum cover to dismantling to be connected, has improved the practicality and the flexibility of this application.

Optionally, a protective sleeve for protecting the joint rubber sleeve and the sealing head is arranged on an end wall of the sealing portion, which faces the joint rubber sleeve, the connecting portion is arranged inside the protective sleeve, and the inner wall of the protective sleeve is abutted to the inner wall of the joint rubber sleeve.

Through adopting above-mentioned technical scheme, set up the lag and can protect the structure of joint gum cover and sealed head junction, can effectively improve the external corruption to sealed head in long-time back, lead to connecting the inside impaired of gum cover, cause the circuit short circuit, cause the problem of potential safety hazard, improved the practicality and the security of this application.

Optionally, one end of the sealing part, which faces away from the joint rubber sleeve, contracts towards the circle center.

Through adopting above-mentioned technical scheme, the bore size that sealing portion one end shrink can effectively reduce the wiring mouth to make the inside and external contact surface of sealing portion reduce, thereby improved the leakproofness of this application.

Optionally, one end of the sealing portion, which is away from the joint rubber sleeve, is provided with a support sleeve, one end of the support sleeve is inserted into the wiring port, one end of the support sleeve, which is away from the sealing portion, is provided with a support ring, and the support ring abuts against the outer wall of the wiring port.

Through adopting above-mentioned technical scheme, set up and support the cover and can support the wiring mouth of sealing part, can effectively improve long-time back, the shrink of wiring mouth to excessively extrude the cable, cause cable local damage, thereby harm the problem of circuit, improved the practicality and the security of this application.

Optionally, the outer wall of the support sleeve is provided with a threaded connection section, the inner wall of the wiring port close to the support sleeve is provided with a threaded groove, and the support sleeve is in threaded fit with the sealing part.

Through adopting above-mentioned technical scheme, sealing and supporting cover threaded connection can form and can dismantle the connection, and the dismantlement of the cover of being convenient for support has made things convenient for the dismantlement and the equipment of the intermediate head of this application, has improved flexibility and practicality.

Optionally, the joint gum cover lateral wall is overlapped and is equipped with a plurality of beaded finish that are used for firm joint gum cover structure, the beaded finish evenly sets up along joint gum cover length direction.

Through adopting above-mentioned technical scheme, set up the beaded finish and can protect the structure of joint gum cover, can stabilize the structure of joint gum cover when connecting the gum cover and contracting or expanding, increase of service life improves practicality and economic benefits.

Optionally, the number of the reinforcing rings is three, and the reinforcing rings are respectively sleeved at two ends and a central section of the joint rubber sleeve.

Through adopting above-mentioned technical scheme, protection is strengthened from connecting gum cover both ends and central section to the joint gum cover respectively to three beaded finish for the structure of three is more firm, and difficult emergence is cracked, has prolonged the life of the shrinkage intermediate head of this application, has improved economic benefits.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sealing heads are inserted at the two ends of the joint rubber sleeve, so that the sealing performance inside the joint rubber sleeve can be further improved, and the problem that moisture enters the inside of the joint rubber sleeve, so that the internal circuit of the joint rubber sleeve is short-circuited to cause potential safety hazards is solved, and the practicability and the safety of the application are improved;

2. support the cover and can support the wiring mouth of sealing portion, can effectively improve long-time back, the shrink of wiring mouth to excessively extrude the cable, cause cable local damage, thereby harm the problem of circuit, improved the practicality and the security of this application.

Drawings

FIG. 1 is a schematic illustration of a cold-shrink intermediate joint in accordance with an embodiment of the present application.

Fig. 2 is a schematic structural diagram of the joint gum cover and the sealing head after the preform is extracted according to the embodiment of the application.

Fig. 3 is an enlarged view at a in fig. 2.

Description of reference numerals: 1. a joint rubber sleeve; 11. a reinforcement ring; 12. a clamping groove; 2. a prefabricated member; 21. tapping; 3. a sealing head; 31. a connecting portion; 311. a clamping block; 32. a sealing part; 321. a protective sleeve; 33. a wiring port; 331. a thread groove; 4. a support sleeve; 41. a support ring; 42. a threaded connection section.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Example 1

The embodiment 1 of the application discloses a cold-shrink intermediate joint. Referring to fig. 1, a shrinkage intermediate head, including joint gum cover 1 and the prefab 2 that is used for strutting joint gum cover 1, prefab 2 surface is provided with the screw thread section, and prefab 2 passes through screw thread section and connects 1 threaded connection of gum cover. In this example 1, the joint boot 1 is made of an elastic material, and silicone rubber is used, and the diameter of the joint boot is expanded by the preform 2. The prefab 2 is the plastics material, demolishs prefab 2 fast when being convenient for use intermediate head, and 2 one end of prefab are provided with the prefab of being convenient for and carry out the 21 of taking a percentage of demolising.

Referring to fig. 1, the outer wall of the joint rubber sleeve 1 is provided with a plurality of reinforcing rings 11, and the reinforcing rings 11 are uniformly arranged along the length direction of the joint rubber sleeve 1. In this embodiment 1, three reinforcing rings 11 are provided, and are all integrally formed with the joint boot 1. The three reinforcing rings 11 are respectively arranged at two ends and a central section of the joint rubber sleeve 1, so that the structural strength of the joint rubber sleeve 1 can be improved.

The implementation principle of the cold-shrink intermediate joint in the embodiment 1 of the application is as follows: in the specific use process, cable joints needing to be installed extend into the joint rubber sleeve 1 from two ends of the joint rubber sleeve respectively, the joint rubber sleeve 1 is pressed on an insulating layer of a cable, and the prefabricated part 2 is drawn out through the tap 21 to complete installation. The utility model provides an intermediate head is shrinkage intermediate head, can rely on elasticity to retract at normal atmospheric temperature, need not to carry out the heating shrinkage, and is more convenient high-efficient.

Example 2

The embodiment 2 of the application discloses a shrinkage intermediate head. Referring to fig. 2, the present embodiment is different from embodiment 1 in that sealing heads 3 for improving the internal sealing performance of the joint gum cover 1 are disposed at two ends of the joint gum cover 1, each sealing head 3 includes a connecting portion 31 and a sealing portion 32, the connecting portion 31 is inserted into the joint gum cover 1, and the sealing portion 32 is disposed at one end of the connecting portion 31 away from the joint gum cover 1. In this embodiment 2, the sealing portion 32 is in a truncated cone shape, a diameter of an end of the sealing portion 32 close to the connecting portion 31 is larger than a diameter of an end of the sealing portion 32 away from the connecting portion 31, the connecting portion 31 and the sealing portion 32 are integrally formed, and the connecting portion 31 and the sealing portion 32 are made of rubber.

Referring to fig. 2 and 3, the connecting portion 31 is cylindrical, the connecting portion 31 is circumferentially provided with a plurality of clamping blocks 311, the inner wall of the sealing rubber sleeve is provided with a plurality of clamping grooves 12 corresponding to the clamping blocks 311, and the clamping blocks 311 are embedded into the corresponding clamping grooves 12. In this embodiment 2, joint piece 311 and connecting portion 31 integrated into one piece, joint piece 311 is provided with four, and joint piece 311 is the right angle triangular prism form, and the right angle end is connected with connecting portion 31, and the less one end of angle sets up towards sealing 32.

Referring to fig. 2, the end wall of the end, close to the joint rubber sleeve 1, of the sealing portion 32 abuts against the end wall of the joint rubber sleeve 1, a protecting sleeve 321 which can be used for protecting the joint of the joint rubber sleeve 1 and the sealing head 3 is arranged on the end wall of the end, close to the joint rubber sleeve 1, of the sealing portion 32, the connecting portion 31 is arranged inside the protecting sleeve 321, and the inner wall of the protecting sleeve 321 abuts against the outer wall of the joint rubber sleeve 1. In embodiment 2, the protector 321 is made of rubber, and the protector 321 and the sealing portion 32 are integrally formed.

Referring to fig. 2 and 3, the sealing head 3 has a wire connection port 33 formed therethrough along a longitudinal direction thereof, and the wire connection port 33 is coaxially disposed with the connecting portion 31 and the sealing portion 32.

Referring to fig. 2 and 3, one end of the sealing part 32, which faces away from the connector rubber sleeve 1, is provided with a supporting sleeve 4 for improving collapse of the wire connection port 33, the supporting sleeve 4 is in a cylindrical tubular shape, and the diameter of the supporting sleeve 4 is matched with that of the wire connection port 33. The outer wall of the support sleeve 4 is provided with a threaded connection section 42, the inner side wall of the wiring port 33 close to the support sleeve 4 is correspondingly provided with a thread groove 331, and the support sleeve 4 is in threaded connection with the seal head 3. In this embodiment 2, the supporting sleeve 4 is made of plastic.

Referring to fig. 2 and 3, the end of the support sleeve 4 facing away from the sealing head 3 is provided with a support ring 41, and the support ring 41 abuts against the outer wall of the wiring port 33.

The implementation principle of the cold-shrink intermediate joint in embodiment 2 of the application is as follows: in the specific implementation, the support sleeve 4 is screwed into the connection opening 33 until the support ring 41 abuts against the outer wall of the connection opening 33. One end of the cable is passed through the sealing head 3 and the other end is passed through the same procedure. The cable at one end penetrates through the joint rubber sleeve 1 and extends out, the two sections of cables are spliced, the position is adjusted after splicing is completed, the sealing heads 3 at the two ends are inserted into the joint rubber sleeve 1, the joint block 311 is embedded with the joint groove 12, the protection sleeve 321 is sleeved on the joint rubber sleeve 1, and the assembling process is completed.

The utility model provides a shrinkage intermediate head can utilize the characteristic that shrinkage intermediate head itself can contract and the cooperation of sealed head 3 for the leakproofness that connects 1 inside of gum cover can improve, thereby improved inside moisture entering joint gum cover 1, thereby cause and connect 1 internal circuit short circuit of gum cover, arouse the problem of potential safety hazard, improved the practicality and the security of this application.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a shrinkage intermediate head, includes joint gum cover (1) and prefabricated part (2) that are used for strutting joint gum cover (1), the inside screw thread section that is provided with of joint gum cover (1), prefabricated part (2) and joint gum cover (1) threaded connection, its characterized in that: connect gum cover (1) both ends and be provided with sealed head (3) that are used for improving and connect gum cover (1) internal seal nature, sealed head (3) are including connecting portion (31) and sealing (32), connecting portion (31) are inserted and are established in connecting gum cover (1), sealing (32) set up in connecting portion (31) and deviate from the one end that connects gum cover (1), sealing (32) one end wall offsets with connecting gum cover (1) end wall, sealed head (3) have run through along its length direction and have seted up wiring mouth (33), wiring mouth (33) and sealed head (3) coaxial setting.

2. The cold shrink intermediate joint of claim 1, wherein: connecting portion (31) are provided with a plurality of joint pieces (311) on week, connect gum cover (1) inner wall and offer a plurality of joint grooves (12) with joint piece (311) looks adaptation, joint piece (311) inlay and locate in corresponding joint groove (12).

3. The cold shrink intermediate joint of claim 2, wherein: sealing part (32) are provided with lag (321) that are used for protecting joint gum cover (1) and sealed head (3) towards the one end endwall that connects gum cover (1), connecting portion (31) set up inside lag (321), lag (321) inner wall and joint gum cover (1) inner wall looks butt.

4. The cold shrink intermediate joint of claim 1, wherein: one end of the sealing part (32) departing from the joint rubber sleeve (1) shrinks towards the circle center.

5. The cold shrink intermediate joint according to claim 4, wherein: one end of the sealing portion (32) deviating from the joint rubber sleeve (1) is provided with a supporting sleeve (4), one end of the supporting sleeve (4) is inserted into the wiring port (33), one end of the supporting sleeve (4) deviating from the sealing portion (32) is provided with a supporting ring (41), and the supporting ring (41) is abutted to the outer wall of the wiring port (33).

6. The cold shrink intermediate joint according to claim 5, wherein: the outer wall of the support sleeve (4) is provided with a threaded connection section (42), the inner wall of the wiring port (33) close to the support sleeve (4) is provided with a thread groove (331), and the support sleeve (4) is in threaded fit with the sealing part (32).

7. The cold shrink intermediate joint of claim 1, wherein: the outer side wall of the joint rubber sleeve (1) is sleeved with a plurality of reinforcing rings (11) used for stabilizing the structure of the joint rubber sleeve (1), and the reinforcing rings (11) are uniformly arranged along the length direction of the joint rubber sleeve (1).

8. The cold shrink intermediate joint according to claim 7, wherein: the number of the reinforcing rings (11) is three, and the two ends and the central section of the joint rubber sleeve (1) are respectively sleeved with the reinforcing rings (11).