CN215834743U

CN215834743U - Three-phase four-wire combined junction box for replacing meter without power outage

Info

Publication number: CN215834743U
Application number: CN202121925826.0U
Authority: CN
Inventors: 吴盛逵; 阮金祥; 余俊耀; 廖铀
Original assignee: Shanghai Zhenhao Electronic Technology Co ltd
Current assignee: Shanghai Zhenhao Electronic Technology Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-02-15
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a three-phase four-wire combined junction box for replacing a meter without power outage, which comprises a junction box main body and a protective cover, wherein wire inlets are formed in the outer walls of the front side and the rear side of the junction box main body, a mounting groove is formed in the upper surface of the junction box main body, a plurality of wire inlet connecting ends and wire outlet connecting ends are arranged in the mounting groove, the front ends of the wire outlet connecting ends for connecting a voltage phase wire and a current inlet wire are connected with first compression springs, the front ends of the first compression springs are connected with sliding blocks, the outer walls of the front sides of the sliding blocks are in contact connection with the outer walls of the rear sides of the wire inlet connecting ends, connecting columns are inserted into the upper parts of the sliding blocks, movable plates are fixedly connected to the upper ends of the connecting columns, and the left ends and the right ends of the movable plates are slidably mounted on the upper surface of the junction box main body through limiting rods. The utility model realizes the disconnection or short circuit operation of all the wiring terminals at the same time, is convenient and fast to operate and avoids the risk of wrong connection or missed connection.

Description

Three-phase four-wire combined junction box for replacing meter without power outage

Technical Field

The utility model relates to the field of power application, in particular to a three-phase four-wire combined junction box for replacing a meter without power outage.

Background

The junction box is one of electrician's auxiliary materials, because the electric wire of fitment usefulness is passed the wire tube, and just adopt the junction box as transition usefulness at the connector position of electric wire (for example the circuit is longer, or the wire tube is to the corner), the wire tube is connected with the junction box, the electric wire of spool the inside links up in the junction box, play the effect of protection electric wire and connecting wire, three-phase mutual inductance formula electric energy meter generally is applied to the powerful application occasion of heavy current, generally can not carry out the work of trading the table of having a power failure, avoid equipment outage to cause the loss, for this three-phase mutual inductance formula electric energy meter front end all can install joint junction box and be used for trading the table and check-up.

When the conventional combined junction box is overhauled and replaced, various disconnection and short-circuit operations are required according to the requirements of replacing or verifying, the operation is complicated, all wiring terminals cannot be operated simultaneously, the risk of wrong connection or missed connection exists, and the like, and certain defects are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a three-phase four-wire combined junction box for replacing a meter without power outage, which can realize the disconnection or short-circuit operation of all wiring ends simultaneously, is convenient and fast to operate and avoids the risk of misconnection or misconnection.

In order to solve the technical problems, the utility model provides a three-phase four-wire combined junction box for replacing a meter without power outage, which comprises a junction box main body and a protective cover arranged above the junction box main body, wherein wire inlets are formed in the outer walls of the front side and the rear side of the junction box main body, a mounting groove is formed in the upper surface of the junction box main body, a plurality of wire inlet connecting ends and wire outlet connecting ends are arranged in the mounting groove, the front ends of the wire outlet connecting ends for connecting a voltage phase wire and a current inlet wire are connected with first compression springs, the front ends of the first compression springs are connected with sliding blocks, the outer walls of the front sides of the sliding blocks are in contact connection with the outer walls of the rear sides of the wire inlet connecting ends, connecting columns are inserted into the upper parts of the sliding blocks, movable plates are fixedly connected to the upper ends of the connecting columns, and the left ends and the right ends of the movable plates are slidably mounted on the upper surface of the junction box main body through limiting rods.

Furthermore, the right end of the movable plate vertically penetrates through a sliding connection to be provided with a positioning column, the lower end of the positioning column is provided with a limiting block, a second compression spring is sleeved on the outer wall of the lower portion of the positioning column, the lower end of the positioning column is connected with a first positioning hole in an inserting mode, and the first positioning hole is formed in the right side of the upper surface of the junction box main body.

Furthermore, the left side and the right side of the sliding block are both connected with limiting baffles in a sliding mode, and the bottom surfaces of the limiting baffles are fixedly connected with the bottom surface in the mounting groove.

Further, the left side and the right side of the upper surface of the junction box main body are respectively provided with a plurality of second positioning holes, positioning pins are inserted into the second positioning holes, the upper ends of the positioning pins are fixedly installed on the inner top surface of the protective cover, the outer walls of the left side and the right side of the protective cover are respectively provided with a buckle, clamping blocks are clamped on the buckles, and the clamping blocks are fixedly installed on the outer walls of the left side and the right side of the junction box main body respectively.

Furthermore, a transparent observation window is arranged on the top surface of the protective cover.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the outgoing line connecting end is in contact connection with the incoming line connecting end through the matching of the first compression spring and the sliding block, the movable plate adjusts the position of the sliding block through the connecting column, the connection or disconnection operation of a plurality of wiring terminals can be realized at one time, the working efficiency is improved, the condition of wrong connection or missed connection is avoided, the movable plate can realize positioning through the matching of the positioning column and the first positioning hole, and the connecting column is detachably arranged on the movable plate, so that an operator can conveniently adjust the condition of the connecting column, and the meter changing or the wiring inspection can be carried out without power failure.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a three-phase four-wire combined junction box for replacing a meter without power outage according to the utility model;

FIG. 2 is an external view of the junction box main body of the three-phase four-wire combination junction box of the utility model for replacing the meter without power failure;

fig. 3 is a bottom view of the external structure of the protective cover of the three-phase four-wire combined junction box of the uninterruptible power supply for switching the meter.

Detailed Description

The three-phase four-wire junction box of the uninterruptible power supply switching watch of the present invention will now be described in more detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it being understood that those skilled in the art can modify the utility model described herein while still achieving the advantageous effects of the utility model. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the utility model.

The utility model is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1, the embodiment of the utility model provides a three-phase four-wire united junction box for changing a meter without power failure, which comprises a junction box main body 1 and a protective cover 2 arranged above the junction box main body 1, the outer walls of the front side and the rear side of the junction box main body 1 are respectively provided with a wire inlet 4, the upper surface of the junction box main body 1 is provided with a mounting groove 3, a plurality of incoming line connecting ends 5 and outgoing line connecting ends 6 are arranged in the mounting groove 3, the front ends of the outgoing line connecting ends 6 for connecting the voltage phase line and the current incoming line are both connected with first compression springs 7, the front end of the first compression spring 7 is connected with a slide block 8, the outer wall of the front side of the slide block 8 is in contact connection with the outer wall of the rear side of the wire inlet connecting end 5, the upper parts of the sliding blocks 8 are all inserted with connecting columns 9, the upper ends of the connecting columns 9 are all fixedly connected with movable plates 10, the left end and the right end of the movable plate 10 are slidably mounted on the upper surface of the junction box main body 1 through limiting rods 11.

Be equipped with the binding post of three-phase power cord in mounting groove 3, the wiring order of every looks power is from a left side to the right side and is in proper order: voltage phase line, electric current inlet wire and electric current are qualified for the next round of competitions, the rightmost end inserts the voltage central line, all be equipped with the wiring mouth on every inlet wire link 5, all be equipped with the wiring mouth on the slider 8 with the contact of inlet wire link 5 of every electric current inlet wire, wherein, spliced pole 9 lower part outer wall all pegs graft inside slider 8 of its below, spliced pole 9 upper end can be dismantled with fly leaf 10 and be connected, make spliced pole 9 dismantle, through promoting fly leaf 10, make fly leaf 10 drive spliced pole 9 and slider 8 backward movement, slider 8 separates with inlet wire link 5, realize circuit disconnection operation.

The right end of the movable plate 10 is vertically connected with a positioning column 12 in a penetrating and sliding mode, the lower end of the positioning column 12 is provided with a limiting block 13, a second compression spring 14 is sleeved on the outer wall of the lower portion of the positioning column 12, the lower end of the positioning column 12 is connected with a first positioning hole 15 in an inserting mode, and the first positioning hole 15 is formed in the right side of the upper surface of the junction box main body 1. In the present embodiment, the positioning column 12 is lifted up to separate the lower end of the positioning column 12 from the inside of the first positioning hole 15, the movable plate 10 is moved to a desired position, the positioning column 12 is released, and the positioning column 12 is moved downward by the second compression spring 14 and inserted into the first positioning hole 15, thereby positioning the movable plate 10.

As shown in fig. 2, the left side and the right side of the sliding block 8 are both connected with a limiting baffle 20 in a sliding manner, and the bottom surface of the limiting baffle 20 is fixedly connected with the bottom surface in the mounting groove 3. In the present embodiment, the limit baffle 20 is provided to limit the slider 8 and prevent the slider 8 from deviating.

All be equipped with a plurality of second locating hole 16 on the left and right sides of the upper surface of terminal box main part 1, as shown in fig. 3, all peg graft in the second locating hole 16 and have locating pin 17, the equal fixed mounting in locating pin 17 upper end is in on the top surface in the protective cover 2, all be equipped with buckle 19 on the protective cover 2 left and right sides outer wall, the equal joint has fixture block 18 on the buckle 19, fixture block 18 respectively fixed mounting be in on the terminal box main part 1 left and right sides outer wall. In this embodiment, the protecting cover 2 is connected to the second positioning hole 16 through the positioning pin 17, and the protecting cover 2 is detachably mounted on the terminal box main body 1 by the engagement of the latch 19 and the latch 18.

And a transparent observation window is arranged on the top surface of the protective cover 2. In this embodiment, the wiring condition in the terminal box main part 1 is observed to the transparent observation window of operating personnel accessible, and through the setting of protective cover 2, avoids the risk of electrocution of operating personnel after the circuit switch-on.

As shown in fig. 1, an embodiment of the present invention provides a method for using a three-phase four-wire combined junction box for switching a meter without power outage, including the following steps: get into the inlet wire respectively with being qualified for the next round of competitions inside inlet wire 4 gets into terminal box main part 1 to be connected inlet wire and being qualified for the next round of competitions respectively with inlet wire link 5, the link 6 that is qualified for the next round of competitions through the wiring mouth, inlet wire link 5 is connected through first compression spring 7 and slider 8 and the 6 rear side wall contacts of link that are qualified for the next round of competitions, realizes switching on, according to the demand of trading table or inspection wiring, erection joint post 9: when the meter needs to be changed, a connecting column 9 is inserted above a sliding block 8 at the wiring position of a voltage phase line, a current incoming line and a voltage neutral line at the rightmost end, the connecting column 9 is detachably mounted on a movable plate 10, when the meter needs to be changed, a positioning column 12 is pulled upwards to separate the positioning column 12 from a first positioning hole 15, the sliding block 8 moves towards an incoming line connecting end 5 under the action of a first compression spring 7 and contacts with the outer wall of the incoming line connecting end to realize wiring conduction, the meter changing operation can be carried out, after the meter changing is finished, the movable plate 10 is pushed backwards to a proper position to separate the sliding block 8 from the incoming line connecting end 5, the positioning column 12 is released while the position of the movable plate 10 is kept, and the positioning column 12 is inserted in the first positioning hole 15 under the action of a second compression spring 14 to realize the positioning of the movable plate 10; when wiring needs to be checked, the connecting column 9 above the sliding block 8 at the position of the voltage phase line is taken down, only the connecting column 9 is inserted on the sliding block 8 at the current inlet line of each phase of power supply wiring, and only the contact surface which can be released on each phase of current inlet line is disconnected, so that wiring checking can be carried out.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a terminal box is united to three-phase four-wire that does not have a power failure and trade table, its characterized in that includes the terminal box main part and establishes the protective cover of terminal box main part top, all be equipped with the incoming line mouth on the lateral outer wall around the terminal box main part, the terminal box main part upper surface is equipped with the mounting groove, inside a plurality of inlet wire link and the link of being qualified for the next round of competitions of being equipped with of mounting groove, connecting voltage phase line and electric current inlet wire the link front end of being qualified for the next round of competitions all is connected with first compression spring, first compression spring front end is connected with the slider, slider front side outer wall with the contact of inlet wire link rear side outer wall is connected, slider upper portion is all pegged graft there is the spliced pole, the equal fixedly connected with fly leaf in spliced pole upper end, both ends are all passed through gag lever slidable mounting about the fly leaf terminal box main part upper surface.

2. The three-phase four-wire combined junction box for replacing the meter without power failure as claimed in claim 1, wherein a positioning column is vertically and slidably connected to the right end of the movable plate in a penetrating manner, a limiting block is arranged at the lower end of the positioning column, a second compression spring is sleeved on the outer wall of the lower portion of the positioning column, a first positioning hole is connected to the lower end of the positioning column in a plugging manner, and the first positioning hole is formed in the right side of the upper surface of the junction box main body.

3. The three-phase four-wire combined junction box for replacing the meter without power failure as claimed in claim 1, wherein the left side and the right side of the sliding block are both connected with a limiting baffle in a sliding manner, and the bottom surfaces of the limiting baffles are both fixedly connected with the bottom surface in the mounting groove.

4. The three-phase four-wire combined junction box capable of changing a meter without power failure as claimed in claim 1, wherein a plurality of second positioning holes are formed in each of the left and right sides of the upper surface of the junction box main body, positioning pins are inserted into the second positioning holes, the upper ends of the positioning pins are fixedly mounted on the inner top surface of the protective cover, buckles are arranged on the outer walls of the left and right sides of the protective cover, clamping blocks are clamped on the buckles, and the clamping blocks are fixedly mounted on the outer walls of the left and right sides of the junction box main body respectively.

5. The three-phase four-wire combined junction box for replacing the watch without power failure as claimed in claim 1, wherein a transparent observation window is arranged on the top surface of the protective cover.