CN204706866U - The T-shaped splicing ear head of power cable - Google Patents

Abstract

The utility model discloses a T-shaped connecting terminal head of a power cable, which comprises a T-shaped connecting terminal body, which is an integral part integrating an internal connecting conductor and an external hard insulating sleeve, and the connecting conductor is insulated and sealed in the hard insulating In the sleeve, the connecting conductor is T-shaped, and the three interfaces are all internal threaded interfaces. The connecting terminal body is equipped with a head, a cover, a rubber pad and a stress tube. The connecting terminal body is integrated with the cable through the threaded lug, stress tube, rubber pad, hard insulating cover and cable. The cable core is in an insulating and closed state. The connection between the wall bushing and the live connection member of the electrical equipment only needs to rotate the butt joint. Before the connecting terminal body is connected, the connecting conductor is insulated and sealed. When connecting, the connecting point of the connecting conductor is in the arc extinguishing chamber of the hard insulating sleeve. During the whole connecting process, the staff only touch the insulating material, so that live work can be realized and the operation process Simple and flexible.

Description

Power cable T-type connection terminal head

technical field

The utility model relates to a high-voltage cable connection terminal, in particular to a T-shaped connection terminal head of a power cable.

Background technique

In the past, the connecting conductors of the domestic cable connecting terminals were all exposed type, which were easy to discharge, short circuit, electric shock, and many potential safety hazards. The cable connecting members of the European-style cable branch box were equipped with insulating jackets to prevent discharge, short circuit, and electric shock. The metal conductor and its external insulator are separate parts, so when the connection terminal is connected to the wall bushing or the live connection member of the electrical equipment, the connection between the internal conductor and the external insulator needs to be carried out one by one, the process is cumbersome, and the operation flexibility is not strong and time-consuming It is longer; and the operation process cannot be carried out with electricity, which affects the reliability of power supply, has a great impact on production and life, and causes economic losses.

Utility model content

The purpose of the utility model is to provide a T-shaped connection terminal head of a power cable that can be connected with electricity and is easy to operate.

The utility model discloses a T-shaped connecting terminal head of a power cable, which comprises a T-shaped connecting terminal body. The connecting terminal body is an integral part integrating an internal connecting conductor and an external hard insulating sleeve. In the quality insulating sleeve, the connecting interface of the connecting conductor adopts a threaded connection structure, the shape of the connecting conductor is T-shaped, and the three interfaces are all internal threaded interfaces.

The shape of the hard insulating sleeve is T-shaped, and there is a T-shaped hole in it, and the connecting conductor is embedded in the T-shaped hole. The length of the hard insulating sleeve is greater than the length of the connecting conductor, and its two ends in the coaxial direction The arc extinguishing chamber I and the arc extinguishing chamber II are respectively formed, and the lower part in the other direction forms a cable connection chamber, which is equipped with a stress tube. Hard insulating cover.

The inner space of the arc extinguishing chamber I of the hard insulating sleeve is equal to the inner space of the arc extinguishing chamber II.

The two ends of the coaxial line of the connecting terminal body are respectively equipped with screw-type heads integrating internal conductors and external hard insulators. The inner conductors of the screw-type heads are metal screws with positioning rings, and the longitudinal section shape of the hard insulator It is U-shaped, and the metal screw rod is insulated and closed in the axial center of the hard insulator, and the outer end face of the metal screw rod is located in the open end face of the hard insulator. The screw-type head is covered with its hard insulator outside the hard insulating sheath, and the inner conductor is threadedly connected with the inner threaded hole of the connecting conductor.

There is a stepped hole in the axial center of the hard insulating cover, and the large-diameter end of the stepped hole is an internal threaded hole.

When the hard insulating cover and the screw-type cover are connected to the connecting terminal body, rubber pads are provided.

The cable is first crimped with the threaded head lug into one body, and the threaded head lug and the connecting terminal body of the utility model are integrally connected by thread. When in use, the sealing head is removed and connected to the wall bushing or the live connection member of the electrical equipment through the butt joint. When the butt joint is connected to the wall bushing or the live connection member of the electrical equipment and the connection terminal body, because the connection conductor of the connection terminal body is completely insulated and enclosed in a hard insulating sleeve, the connection of the connection conductor is in the arc extinguishing chamber, when the staff operates Only the insulating material is in contact, so that the connecting terminal body can realize the live connection operation, thereby reducing the scope of power failure and facilitating safe power supply. The operation is simple, only need to rotate the butt joint when installing and removing.

In order to ensure the cleanness and dryness of the connecting terminal body and the integrity of its thread, the connecting end of the connecting terminal body is sealed with a head first, and the rubber pad can prevent loosening between adjacent connecting parts and has the effect of waterproofing and moisture-proofing.

Description of drawings

Fig. 1 is a schematic diagram of an exploded structure of an embodiment of the present invention.

Detailed ways

As shown in Figure 1, this embodiment discloses a T-shaped connection terminal head for power cables, which includes a T-shaped connection terminal body, and the connection terminal body is an integrated whole with an internal connection conductor 1 and an external hard insulating sleeve 2 The connecting conductor 1 is insulated and enclosed in the hard insulating sheath 2.

The shape of the connecting conductor 1 is T-shaped, and its three interfaces are all internal threaded interfaces. The shape of the hard insulating sleeve 2 is T-shaped, and there is a T-shaped hole in it. The connecting conductor 1 is embedded in the T-shaped hole. The length of the hard insulating sleeve 2 is greater than the length of the connecting conductor 1. The arc extinguishing chamber I 21 and the arc extinguishing chamber II 22 are respectively formed, and the lower part in the other direction forms a cable connection chamber 23, which is equipped with a stress tube 3, and the outer wall of the cable connection chamber 23 has a grounding lead connection hole 24 and a cable connection chamber 23 The end of the outer wall is connected with a hard insulating cover 4 through external threads. There is a stepped hole in the axial center of the hard insulating cover 4, and the large diameter end of the stepped hole is an internally threaded hole.

The two ends of the coaxial line of the connecting terminal body are equipped with screw-shaped caps 5 integrating the inner conductor 51 and the outer hard insulator 52 respectively. The inner conductor 51 of the screw-type head 5 is a metal screw with a positioning ring. The longitudinal section of the hard insulator 52 is U-shaped. In the open end face of the insulator 52. The screw-type head 5 is sleeved on the outside of the hard insulating sheath 2 with its hard insulator 52 , and the inner conductor 51 is threadedly connected with the inner threaded hole of the connecting conductor 1 .

When the hard insulating cover 4 and the screw-type cover 5 are connected to the connecting terminal body, rubber pads 6 are provided to protect the thread and keep the connecting conductor clean and dry.

When this connection terminal is in use, first remove the hard insulating cover, put the hard insulating cover on the cable end, then put the rubber pad and stress tube on the cable end, connect the cable core of the cable end with the The threaded lugs are crimped as one; then insert the threaded lugs into the cable connection chamber, clamp the hexagonal section of the outer wall of the hard insulating sleeve with an insulating wrench to rotate the connecting terminal body to securely fix the threaded lugs, and finally The stress tube is pushed into the cable connection chamber, and the hard insulating cover is tightened on the lower end of the hard insulating sleeve, so far the cable and the connecting terminal body are connected into one body. The head connection end of the connection terminal body can be connected with the wall bushing and the live connection member of the electrical equipment by matching with a suitable butt joint.

In order to ensure the cleanness and dryness of the connecting terminal body and the integrity of its thread, the connecting end of the connecting terminal body is sealed with a head first, and the rubber pad can prevent loosening between adjacent connecting parts and has the effect of waterproofing and moisture-proofing.

Claims (6)

1. the T-shaped splicing ear head of power cable, it is characterized in that: it comprises T-shaped splicing ear body, splicing ear body is the single piece of inner bonding conductor and the integration of outside rigid insulation cover, bonding conductor insulation and obturation is in rigid insulation cover, the connecting interface of bonding conductor all adopts screw connection structure, the shape of bonding conductor is T-shaped, and its three interfaces are internal thread interface.

2. the T-shaped splicing ear head of power cable according to claim 1, it is characterized in that: the shape of described rigid insulation cover is T-shaped, T-shaped hole is had in it, described bonding conductor is flush-mounted in T-shaped hole, the length of rigid insulation cover is greater than the length of bonding conductor, the two ends in its coaxial line direction form arc control device I and arc control device II respectively, cable joining room is formed at the bottom in another direction, be furnished with stress tube in it, the outer wall of cable joining room has ground lead connecting hole, cable joining room outer wall end is connected with rigid insulation capping by external screw thread.

3. the T-shaped splicing ear head of power cable according to claim 2, is characterized in that: in the arc control device I of described rigid insulation cover, empty size equals empty size in arc control device II.

4. the T-shaped splicing ear head of power cable according to claim 3, it is characterized in that: the two ends supporting screw type end socket having inner conductor and the integration of external hard plastic insulator respectively of described splicing ear body coaxial line, the inner conductor of screw type end socket is the metal screw of band locating ring, the vertical sectional shape of rigid insulation body is U-shaped, metal screw insulation and obturation is in the axial centre of rigid insulation body, and the outer face of metal screw is positioned at the openend end face of rigid insulation body; Screw type end socket is placed on outside described rigid insulation cover with its rigid insulation body, inner conductor is threaded with the internal thread hole of described bonding conductor.

5. the T-shaped splicing ear head of power cable according to claim 2, is characterized in that: the axial centre of described rigid insulation capping has shoulder hole, the bigger diameter end of shoulder hole is internal thread hole.

6. the T-shaped splicing ear head of power cable according to claim 4, is characterized in that: all supporting rubber blanket when described rigid insulation capping is connected with described splicing ear body with screw type end socket.