CN204732841U - Cable branch box shunting wall bushing and connecting assembly thereof - Google Patents

Abstract

The utility model discloses a kind of cable branch box shunting wall bushing and connecting assembly thereof, comprise the unitarily formed shunting wall bushing of the rigid insulation body being inner conductive connector and setting-in inner conductive connector, banjo fixing butt jointing and cable connecting terminals, cable connecting terminals connects as one formation sub-assembly by banjo fixing butt jointing and shunting wall bushing.The side through walls of shunting wall bushing is parallel with two and connects major loop into and out of two threaded ends of line cable, is communicated with the shunting cable threaded ends conducted electricity the while that opposite side being parallel with multiple with main loop cabling.The shunting cable of each user is in parallel connection, separate, and the shunting cable connection end period of the day from 11 p.m. to 1 a.m exiting some users can not have influence on the powered of other users, improves power supply benefit.All there are arc control device each butt end of shunting wall bushing, each banjo fixing butt jointing and cable connecting terminals, and only need rotate banjo fixing butt jointing during docking, only contact rigid insulation body during docking operation, safe and efficient, operation is simple.

Description

Cable branch box distribution wall bushing and its connection assembly

technical field

The utility model relates to a cable branch box, in particular to a cable branch box shunting wall bushing and a connecting assembly thereof.

Background technique

The current cable branch box uses the wedge-shaped screw-type wall-through bushing as the connection busbar, and the American-style cable branch box uses the screw-type wall-through bushing as the connecting busbar, and then realizes the cable branch through the connecting member connected with the wall-through bushing or transfer. The wall-piercing bushings of the two structures are linear structures, and the shunt lines between users are in series relationship. If there is a problem with the cable connection terminal of the previous user and needs to be removed and replaced, it will cause an open circuit at the back, that is to say, the entire The users in the back are all out of power, causing a larger power outage range and causing economic losses. In addition, when the current wall-piercing bushing is connected to the cable connection terminal through the intermediate joint, the intermediate joint and the cable connection terminal are separate parts connecting the conductor and the insulating part, and the connection needs to be carried out one by one. The stability after connection is poor. In addition, the power must be cut off when connecting, and the live connection cannot be connected, which will affect the reliability of power supply and cause economic losses.

Utility model content

The purpose of this utility model is to provide an assembly formed by an integral wall-piercing bushing, an intermediate joint connected to the wall-piercing bushing, and a cable connection terminal, so that the shunt cables received by the user are independent of each other and do not affect each other. It can be operated live, improving the reliability of power supply and improving the efficiency of power supply.

The utility model discloses a branching wall bushing of a cable branch box and a connection assembly thereof, comprising a splitting wall bushing, a butt joint and a cable connection terminal, and the cable connection terminal is integrated with the branching wall bushing through the butt joint , the shunt wall bushing is an integrated integral part of the conductive connector and the hard insulating sleeve embedded in the conductive connector. The side of the wall through the wall is the main circuit cable connection side, and the opposite side is the shunt cable connection side; The main circuit cable connection side has two threaded connection ends in parallel, and the shunt cable connection side has multiple threaded connection ends in parallel; the outer end surface of each threaded connection end of the conductive connecting body is located in the outer end surface of the corresponding end of the hard insulating sleeve, so that the hard insulation Each end of the sleeve has an arc extinguishing chamber; the outer wall of the hard insulating sleeve has a connecting ring with bolt holes.

The connecting side of the main circuit cable of the conductive connecting body is connected in parallel with two internally threaded or externally threaded connecting ends, and the connecting side of the shunt cable is connected in parallel with three internally threaded connecting ends or two externally threaded connecting ends, so that the conductive connecting body forms a "in" Font or "I" font structure.

The outer diameter of the externally threaded connection end of the conductive connector is smaller than the inner diameter of the corresponding end of the hard insulating sleeve.

The butt joint includes a conductive butt joint body and a rigid insulator embedded with the conductive butt joint body. The conductive butt joint body is an internally threaded conductive pipe or an integral part of the middle base section and two external thread connectors at both ends or an intermediate base section and one end outer threaded joint. The integral part of the inner threaded hole at the other end of the threaded joint. The length of the hard insulator extends beyond the outer end faces of the joints at both ends of the conductive butt joint so that the conductive butt joint is hidden in the hard insulator. The outer diameter of the external threaded joint is less than The inner diameter of the corresponding end of the hard insulator makes the end of the hard insulator form an arc extinguishing chamber, and the outer wall of the hard insulator has a concave wrench position, and the cross-sectional shape of the wrench position is hexagonal.

The screw threads at both ends of the conductive butt joint have opposite directions of rotation.

The shape of the cable connection terminal is L-shaped, which is an integrated integral part of the inner conductor of the corresponding shape and the outer hard insulator. The structure is matched, and the other end is the internal thread hole connecting the cable lug. The length of the external hard insulator is greater than the length of the internal conductor. The end forms an arc extinguishing chamber, and the lower part of the external hard insulator cable connection end is equipped with a cable connection chamber with a stress tube. The lower part of the outer wall of the cable connection chamber has a grounding lead connection hole, and the end is connected with a hard insulating cover through an external thread.

The axial center of the hard insulating cover has a stepped hole for cables to pass through, and the inner wall of the large-diameter end of the stepped hole has a corresponding internal thread.

The butt joints of the shunt wall bushings, butt joints and cable connection terminals are matched with screw-type covers or spiral-tube-type covers before use. Both covers are hard insulators and are embedded in their axial centers. The integral part of the connecting conductor; the longitudinal section shape of the rigid insulator with the spiral cap is T-shaped, and there is an axial groove at the junction of the head and the rod, and the connecting conductor is an internally threaded tube with a positioning ring on the outer wall; The longitudinal section shape of the screw-type capping rigid insulator is U-shaped, the conductive connecting body is a screw, and the outer end surface of the screw is located in the opening port of the rigid insulator.

Corresponding rubber pads are provided when the screw-type and screw-type caps are connected to the shunt wall bushing, butt joint and cable connection terminal.

The shunt through wall bushing of the utility model is provided with two parallel threaded connection ends on the side of the wall, so that the butt joints connecting the shunt through wall bushing and the main circuit inlet and outlet cable connection terminals are all connected from this side, and the shunt through the wall The shunt cable connection side on the opposite side of the casing through the wall is connected in parallel with multiple threaded connection ends that are simultaneously connected to the main circuit cable and are conductive. When connecting, only contact with the hard insulating sleeve and can be connected live. The shunt cables of each user are in a parallel state and are independent of each other. A problem with the shunt cable connection terminal of one user will not affect the power reception of another user, reducing the scope of power outages and improving power supply efficiency; It will not affect the power receiving of other users, and the scope of power outages will not be expanded, so as to improve the efficiency of power supply.

The shunt wall bushing, each butt joint and cable connection terminal are an integral part of the inner conductor and the outer hard insulator, and the conductor is embedded in the hard insulator, so that the shunt wall bushing, each butt joint and cable Each butt end of the connection terminal has an arc extinguishing chamber, and the connection operation of each conductor is carried out in the arc extinguishing chamber. Each cable is connected with the corresponding connecting terminal as a whole, and only needs to rotate the butt joint when docking with the butt joint. Moreover, only hard insulators are in contact during the docking operation, and live connection can be made, which is safe and fast, and the process is simple.

The shunt wall bushing, each butt joint and cable connection terminal are sealed and sealed before use, so that the conductive connectors in each hard insulating sleeve are kept clean and dry, and at the same time, the threads at the connection ends are prevented from being damaged. The setting of the rubber pad can prevent the cover from loosening and has the effect of waterproofing and moisture-proofing.

Description of drawings

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

Fig. 2 is a schematic diagram of the exploded structure of the second preferred embodiment of the utility model.

Fig. 3 is a schematic diagram of the exploded structure of the preferred embodiment 3 of the present invention.

Fig. 4 is a schematic diagram of an enlarged structure of a screw-type cap.

Fig. 5 is a schematic diagram of an enlarged structure of a screw-type cap.

Detailed ways

Preferred embodiment 1, as shown in Figure 1, this embodiment discloses a cable branch box shunt wall bushing and its connection assembly, including a type I shunt wall bushing 1, a type I butt joint 2 and an external thread The head-shaped L-shaped cable connection terminal 3, the L-shaped cable connection terminal 3 is connected with the I-type shunt wall bushing 1 through the I-type butt joint 2 to form an assembly.

Type I shunt wall bushing 1 is an integral part of the conductive connecting body 11 and the hard insulating sleeve 12 embedded in the conductive connecting body 11. The side through the wall is the main circuit cable connection side, and the opposite side is the shunt cable connection side. ; The main circuit cable connection side of the conductive connecting body 11 is connected in parallel with two internal thread connection ends, and the shunt cable connection side is connected in parallel with three internal thread connection ends, and the two internal thread connection ends on the main circuit cable connection side are connected to the shunt cable connection side. The two coaxial centerlines in the two internal thread connection ends make the conductive connecting body 11 form a "yu" shape structure. The outer end surfaces of each threaded connection end of the conductive connector 11 are located in the outer end surfaces of the corresponding ends of the hard insulating sleeve 12, so that each end of the hard insulating sleeve 12 has an arc extinguishing chamber. The outer wall of the hard insulating sleeve 12 has a connecting ring with bolt holes.

Type I butt joint 2 includes a conductive butt joint body 21 and a hard insulator 22 embedded with the conductive butt joint body 21. The conductive butt joint body 21 is an integral part with a middle base section, an external thread joint at one end and an internal thread hole at the other end, and the two ends are connected with external threads. The threads of the head are opposite in direction of rotation. The length of the hard insulator 22 extends beyond the outer end faces of the joints at both ends of the conductive butt joint body 21, so that the conductive butt joint body 21 is hidden in the hard insulator 22, and the outer diameter of the external threaded connector is smaller than the inner diameter of the corresponding end of the hard insulator 22 , so that the end of the hard insulator 22 forms an arc extinguishing chamber, the outer wall of the hard insulator 22 has a concave wrench position 221, and the cross-sectional shape of the wrench position 221 is a hexagonal shape.

The shape of the L-shaped cable connection terminal 3 is L-shaped, which is an integrated integral part of the inner conductor 31 and the outer hard insulator 32 of the corresponding shape. The internal threaded hole of the butt joint 2 matches the threaded head, and the other end is an internal threaded hole for connecting the cable lug, the length of the external hard insulator 32 is greater than the length of the internal conductor 31, and the outer diameter of the external threaded head of the conductive butt joint body 31 is smaller than that of the external The inner diameter of the corresponding end of the hard insulator 32 makes the end of the outer hard insulator 32 form an arc extinguishing chamber, and the lower part of the cable connection end of the outer hard insulator 32 is equipped with a cable connection chamber 321 of a stress tube, and the lower part of the outer wall of the cable connection chamber 321 has The end of the connection hole 322 of the grounding lead is connected with a hard insulating cover 33 through an external thread. The axial center of the hard insulating cover 33 has a stepped hole for cables to pass through.

The butt connection ends of type I shunt wall bushing 1, type I butt joint 2 and L-type cable connection terminal 3 are matched with screw type cover 9 or spiral tube type cover 10 before use, and both types of cover are hard An integral part of an insulator and a connecting conductor embedded in its axial center. The longitudinal section shape of the helical tube type cover 10 hard insulator is T-shaped, there is an axial groove at the junction of the head and the rod, and the connecting conductor is an internally threaded pipe with a positioning ring on the outer wall. The screw-type cover 9 has a U-shaped longitudinal section of the hard insulator, and the conductive connecting body is a screw. The outer end surface of the screw is located in the opening port of the hard insulator. Corresponding rubber pads 4 are provided when the screw-type and screw-type covers are connected to Type I shunt wall bushing 1 , Type I butt joint 2 and L-type cable connection terminal 3 .

Each L-shaped cable connection terminal is first connected with the cable as a whole when it is not charged. The Type I shunt wall bushing is first installed on the partition of the cable branch box shell through bolts, and then passed through the butt joint when it is charged. Connect the power supply inlet and outlet cable connection terminals and the shunt cable connection terminal with the shunt wall bushing as a whole. When docking, you only need to use a wrench to clamp the wrench position of the butt joint and rotate the butt joint. The operation is simple. There will be no contact with the charged body during the connection, which provides a safety guarantee for the connection components of the live disassembly and assembly of the cable branch box. Note that the corresponding rubber pads are provided between each connecting piece when docking.

Preferred embodiment 2, as shown in Figure 2, the difference between this embodiment and preferred embodiment 1 is that: the shunt wall bushing and the butt joint are respectively type II shunt wall bushing 4 and type II butt joint 5, and type II The difference between the diversion wall bushing 4 and the type I diversion wall bushing 1 is that two external thread connection ends with a coaxial center line are connected in parallel on both sides, so that the type II diversion wall bushing 4 forms the word "工". Type structure, the outer diameter of both ends of the hard insulating sleeve is larger than the outer diameter of the external thread connection end of the conductive connector, so that the two ends of the hard insulating sleeve form an arc extinguishing chamber. The internal conductive butt joint body of type II butt joint 5 is an internal threaded pipe, and the corresponding external hard insulating sleeve is a straight tube type sleeve, and its two ends form an arc extinguishing chamber that is convenient for connecting a screw type cover. Other structures and docking operations of this embodiment are the same as those of the first preferred embodiment.

Preferred embodiment 3, as shown in Figure 3, the difference between this embodiment and preferred embodiment 1 is that: the shunt wall bushing and the butt joint are respectively Type III shunt wall bushing 6, and the L-shaped cable connection terminal is also included Threaded female cable connection terminal 7. The difference between type III shunt wall bushing 6 and type I shunt wall bushing 1 is that the main circuit cable connection side is connected with two internal thread connection ends in parallel, and the shunt cable connection side is connected with two external thread connection ends in parallel. The connection ends are coaxial with the center line, so that the type III split wall through-wall sleeve 6 forms an "I"-shaped structure. The difference between the internally threaded hole type cable connection terminal 7 and the externally threaded head type cable connection terminal is that the connection structure of the butt end is an internally threaded hole. Other structures and docking operations of this embodiment are the same as those of the first preferred embodiment.

The shunt wall-piercing bushings of the above-mentioned embodiments of the utility model are provided with two parallel threaded connection ends on the side of the wall, so that the butt joints connecting the shunt wall-piercing bushings and the main circuit inlet and outlet cable connection terminals are all connected from this side. , The shunt cable connection side on the opposite side of the wall penetration side of the shunt wall bushing is connected in parallel with multiple conductive threaded connection ends that are simultaneously connected to the main circuit cable. When connecting, only contact the hard insulating sleeve and can be connected live. The shunt cables of each user are in a parallel state and are independent of each other. A problem with the shunt cable connection terminal of one user will not affect the power reception of another user, reducing the scope of power outages and improving power supply efficiency; It will not affect the power receiving of other users, and the scope of power outages will not be expanded, so as to improve the efficiency of power supply.

The shunt wall bushing, each butt joint and cable connection terminal are an integral part of the inner conductor and the outer hard insulator, and the conductor is embedded in the hard insulator, so that the shunt wall bushing, each butt joint and cable Each butt end of the connection terminal has an arc extinguishing chamber, and the connection operation of each conductor is carried out in the arc extinguishing chamber. Each cable is connected with the corresponding connecting terminal as a whole, and only needs to rotate the butt joint when docking with the butt joint. Moreover, only hard insulators are in contact during the docking operation, and live connection can be made, which is safe and fast, and the process is simple.

The shunt wall bushing, each butt joint and cable connection terminal are sealed and sealed before use, so that the conductive connectors in each hard insulating sleeve are kept clean and dry, and at the same time, the threads at the connection ends are prevented from being damaged. The setting of the rubber pad can prevent the cover from loosening and has the effect of waterproofing and moisture-proofing.

Claims (9)

1. a cable branch box shunting wall bushing and connecting assembly thereof, it is characterized in that: this sub-assembly comprises shunting wall bushing, banjo fixing butt jointing and cable connecting terminals, cable connecting terminals is connected as one by banjo fixing butt jointing and shunting wall bushing, shunting wall bushing is the single piece of the rigid insulation cover integration of conduction connector and setting-in conduction connector, and its side through walls is main loop cabling connection side, opposite side is shunting cable-connected side; The main loop cabling connection side of conduction connector is parallel with two threaded ends, shunting cable-connected side is parallel with multiple threaded ends; The outer face of each threaded ends of conduction connector is all positioned at the outer face of rigid insulation cover respective end, and each end that rigid insulation is overlapped all has arc control device; The outer wall of rigid insulation cover has the connecting ring in strap bolt hole.

2. cable branch box shunting wall bushing according to claim 1 and connecting assembly thereof, it is characterized in that: the main loop cabling connection side of described conduction connector is parallel with two internal threads or external screw thread link, shunting cable-connected side is parallel with three internal thread links or two external screw thread links, make conduction connector formed " in " font or " work " font structure.

3. cable branch box shunting wall bushing according to claim 2 and connecting assembly thereof, is characterized in that: the external diameter of described conduction connector external screw thread link is less than the internal diameter of described rigid insulation cover respective end.

4. cable branch box shunting wall bushing according to claim 1 and connecting assembly thereof, it is characterized in that: described banjo fixing butt jointing comprises the rigid insulation body of conduction butt joint body and setting-in conduction butt joint body, conduction butt joint body be internal thread contact tube or for middle part base segment and two ends external screw thread connector single piece or be middle base segment, the single piece of one end male connection other end internal thread hole, the length of rigid insulation body extends to outside the outer face of conduction butt joint body two end connector, be hidden in rigid insulation body to make conduction butt joint body, the external diameter of external screw thread connector is less than the internal diameter of rigid insulation body respective end, the end of rigid insulation body is made to form arc control device, the outer wall of rigid insulation body has the spanner position of indent, the shape of cross section of spanner position is hexagonal prism shape.

5. cable branch box shunting wall bushing according to claim 4 and connecting assembly thereof, is characterized in that: the thread rotary orientation at the conduction butt joint body two ends of described banjo fixing butt jointing is contrary.

6. cable branch box shunting wall bushing according to claim 1 and connecting assembly thereof, it is characterized in that: the shape of described cable connecting terminals is L-type, for the inner conductor of respective shapes and the single piece of external hard plastic insulator integration, two links of inner conductor all adopt screw connection structure, wherein one end is mated with the screw connection structure of described banjo fixing butt jointing, the other end is the internal thread hole of stube cable Wiring nose, the length of external hard plastic insulator is greater than the length of inner conductor, the external diameter of conduction butt joint body external screw thread head is less than the internal diameter of external hard plastic insulator respective end, this end of external hard plastic insulator is made to form arc control device, the supporting cable joining room having stress tube in bottom of external hard plastic insulator cable connection end, ground lead connecting hole is arranged at the outer wall bottom of cable joining room, end is connected with rigid insulation capping by external screw thread.

7. cable branch box shunting wall bushing according to claim 6 and connecting assembly thereof, it is characterized in that: the axial centre of described rigid insulation capping has the shoulder hole passed for cable, the bigger diameter end inwall of shoulder hole has corresponding internal thread.

8. cable branch box shunting wall bushing according to claim 1 and connecting assembly thereof, it is characterized in that: corresponding supporting screw type capping or solenoid type capping before the docking link of described shunting wall bushing, banjo fixing butt jointing and cable connecting terminals uses, two kinds of cappings are rigid insulation body and are flush-mounted in the single piece of bonding conductor of its axial centre; The vertical sectional shape of solenoid type capping rigid insulation body is T-shaped, and its head and bar portion intersection have axial groove, and bonding conductor is the riffled tube that outer wall has locating ring; The vertical sectional shape of screw type capping rigid insulation body is U-shaped, and conduction connector is screw rod, and the outer face of screw rod is positioned at the openend port of rigid insulation body.

9. cable branch box shunting wall bushing according to claim 8 and connecting assembly thereof, is characterized in that: described solenoid type and screw type capping and all supporting corresponding rubber blanket when shunting wall bushing, banjo fixing butt jointing and cable connection end sub-connection.