CN112993696B - Combiner box for smart grid - Google Patents

Abstract

The invention discloses a junction box for a smart grid, which comprises a body and a plurality of connecting mechanisms arranged at the bottom of the body and used for connecting an external wire; the connecting mechanism comprises a mounting seat arranged on the body, a guide column arranged in the mounting seat in a sliding manner, a sliding sleeve arranged on the guide column in a rotating manner and a positioning assembly used for fixing the guide column in the mounting seat. According to the invention, the external circuit of the body and the electronic element in the body are communicated through the connecting mechanism, and the guide post in the connecting mechanism is pulled out from the mounting seat, so that the wiring of the external circuit is facilitated, the rapid and convenient wiring is realized, and the wiring efficiency is improved.

Description

Combiner box for smart grid

technical field

The invention relates to the technical field of combiner boxes, in particular to a combiner box for a smart grid.

Background technique

In the photovoltaic power generation system, the combiner box is a wiring device to ensure the orderly connection and confluence function of photovoltaic modules. This device can ensure that the photovoltaic system is easy to cut off the circuit during maintenance and inspection, and when the photovoltaic system fails, it can reduce the scope of power outage. The combiner box It means that the user can connect a certain number of photovoltaic cells with the same specifications in series to form a photovoltaic series, and then connect several photovoltaic series in parallel to the photovoltaic combiner box. After converging in the photovoltaic combiner box, through the controller, DC power distribution cabinets, photovoltaic inverters, and AC power distribution cabinets are used together to form a complete photovoltaic power generation system and realize grid connection with the mains.

When the existing combiner box is connected to the wires with multiple lines, the wires are generally directly passed through the wire holes into the combiner box and connected to the electronic components. As a result, the wiring efficiency is low.

Contents of the invention

The object of the present invention is to propose a combiner box for a smart grid in order to solve the problem of deficiencies in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A combiner box for a smart grid, comprising a body and a plurality of connection mechanisms arranged at the bottom of the body for connecting external wires;

The connection mechanism includes a mounting seat arranged on the body, a guide post slidably provided in the mounting seat, a sliding sleeve rotatably provided on the guide post, and a positioning assembly for fixing the guide post in the mounting seat;

The outer wall of one end of the guide post away from the mounting seat is provided with an external thread, and the sliding sleeve is provided with an internal thread that is screwed with the external thread. The guide post is slidingly provided with a plurality of collets in contact with the outer wire. The end of the collet away from the outer wire is connected to the ejector rod, and the ejector rod is slidably arranged in the guide column. The end of the guide column far away from the collet is connected with a jacking block that contacts the inner wall of the sliding sleeve. The jacking block and the jacking block It is connected with the guide column through the first return spring; the guide column is provided with a conductive cylinder, and one end of the conductive cylinder is slidably provided with a T-shaped conductive block in contact with the outer wire, and the T-shaped conductive block and the guide column They are connected through the second return spring, and the other end of the conductive cylinder is electrically connected with the electric element in the main body.

Further, the cross-section of the sliding sleeve in contact with the top block is an inclined plane, and the end with a larger inclined angle is away from the body.

Further, the positioning assembly includes a slide plate arranged on the top of the guide column, two blocks arranged at the left and right ends of the slide plate, and a thimble that is slidably arranged in the mounting seat and contacts the blocks, and the block and the slide plate are connected by a second Three return spring connections.

Further, the end of the thimble away from the clamping block penetrates through the inner wall of the mounting seat and is connected with a pressing plate, and the pressing plate is connected with the mounting seat through a fourth return spring.

Further, the outer wall of the press board is coated with a layer of anti-slip rubber layer, and the material of the anti-slip rubber layer is anti-slip paint.

Further, the materials of the body, the mounting seat, the guide column and the chuck are all made of insulating materials;

The end of the guide column away from the base is provided with a limit plate, and the limit plate is connected to the inner wall of the guide column through locking bolts.

Further, a buffer plate is provided on the side of the chuck close to the outer wire, and a plurality of arc-shaped anti-slip protrusions in contact with the outer wire are arranged on one side of the buffer plate.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, the external circuit of the main body and the electronic components inside the main body are connected through the connecting mechanism, and then the guide column in the connecting mechanism is pulled out from the mounting seat to facilitate the wiring of the external circuit, realize fast and convenient wiring, and improve the efficiency of wiring .

Description of drawings

Fig. 1 is the appearance schematic diagram of a kind of smart grid combiner box that the present invention proposes;

Fig. 2 is a schematic diagram of the internal structure of a connection mechanism in a combiner box for a smart grid proposed by the present invention;

Fig. 3 is the enlarged view of place A in Fig. 2;

Fig. 4 is the enlarged view of place B in Fig. 2;

Fig. 5 is a schematic diagram of the internal structure of a chuck in a combiner box for a smart grid proposed by the present invention.

In the figure: 1. Body; 2. Outer wire; 3. Connecting mechanism; 31. Mounting base; 32. Guide column; 3201. Chuck; 3202. Push rod; 3203. Top block; Components; 3401, skateboard; 3402, block; 3403, thimble.

Implementation

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

Referring to Figures 1-5, a combiner box for a smart grid includes a body 1 and a plurality of connection mechanisms 3 arranged at the bottom of the body 1 for connecting external wires 2;

The connecting mechanism 3 includes a mounting seat 31 arranged on the body 1, a guide column 32 slidably disposed in the mounting seat 31, a sliding sleeve 33 rotatably disposed on the guiding column 32, and a positioning mechanism for fixing the guiding column 32 in the mounting seat 31. Component 34;

The outer wall of one end of the guide column 32 away from the mounting seat 31 is provided with an external thread, and the sliding sleeve 33 is provided with an internal thread screwed with the external thread. The guide column 32 is slidingly provided with a plurality of collets 3201 in contact with the outer wire 2. The end of the head 3201 away from the outer wire 2 is connected to the ejector rod 3202, and the ejector rod 3202 is slidably arranged in the guide column 32, and the end of the guide column 32 away from the collet 3201 is connected with a jack block 3203 which is in contact with the inner wall of the sliding sleeve 33, and the jack block 3203 The top block 3203 is connected to the guide column 32 through a first return spring.

Further, the cross-section of the sliding sleeve 33 in contact with the top block 3203 is an inclined plane, and the end with a larger inclined angle is away from the body 1 .

Further, a conductive cylinder is arranged in the guide column 32, and one end of the conductive cylinder is slidably provided with a T-shaped conductive block in contact with the outer conductor 2, and the T-shaped conductive block and the guide column 32 are connected by a second return spring. One end is electrically connected with the electrical components in the body 1 .

Further, the positioning assembly 34 includes a slide plate 3401 arranged on the top of the guide column 32, two blocks 3402 arranged at the left and right ends of the slide plate 3401, and a thimble 3403 slidably arranged in the mounting seat 31 and in contact with the blocks 3402, the blocks 3402 and The slide plates 3401 are connected by a third return spring.

Further, the end of the thimble 3403 away from the clamping block 3402 penetrates through the inner wall of the mounting seat 31 and is connected with a pressing plate, and the pressing plate and the mounting seat 31 are connected by a fourth return spring.

Further, a layer of anti-skid rubber layer is coated on the outer wall of the board, and the material of the anti-skid rubber layer is anti-skid paint.

Further, the materials of the body 1 , the mounting seat 31 , the guide column 32 and the chuck 3201 are all made of insulating materials.

Further, a limit plate is provided at the end of the guide column 32 away from the base 31 , and the limit plate is connected to the inner wall of the guide column 32 through locking bolts.

Further, a buffer plate is provided on the side of the chuck 3201 close to the outer conductor 2 , and a plurality of arc-shaped anti-slip protrusions in contact with the outer conductor 2 are arranged on one side of the buffer plate.

Working principle: When installing, press the pressing plate first, then push the block 3402 through the thimble 3403, and then unlock the sliding plate 3401 on the guide post 32 from the mounting seat 31, then pull the guide post 32 to slide out, and then take one The terminal of the outer conductor 2 is stripped and pushed into the guide column 32 so that the wire core contacts the T-shaped conductive block, and then the sliding sleeve 33 is rotated to move on the guide column 32, and then the chuck 3201 on the ejector rod 3202 is driven by the ejector block 3203 to embrace it. Hold the outer wire 2 so that the outer wire 2 is fixed in the guide column 32, then reset the guide column 32 and fix it in the mounting seat 31, complete the installation of an outer wire 2, and repeat the above operations until all required outer wires are completed. Wire 2 installed.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concept thereof shall fall within the protection scope of the present invention.

Claims (8)

1. A combiner box for a smart grid, characterized in that it includes a body (1) and a plurality of connection mechanisms (3) arranged at the bottom of the body (1) for connecting external wires (2); The connecting mechanism (3) includes a mounting seat (31) arranged on the body (1), a guide column (32) slidingly arranged in the installation seat (31), a sliding sleeve (33) rotatably arranged in the guide column (32) ) and a positioning component (34) for fixing the guide column (32) in the mounting seat (31); The outer wall of one end of the guide post (32) far away from the mounting seat (31) is provided with an external thread, and the sliding sleeve (33) is provided with an internal thread screwed with the external thread, and the guide post (32) is slidingly set There are multiple collets (3201) in contact with the outer conductor (2), and the end of the collet (3201) away from the outer conductor (2) is connected to the ejector rod (3202), and the ejector rod (3202) is slidably arranged on Inside the guide column (32), the end of the guide column (32) away from the chuck (3201) is connected with a top block (3203) that contacts the inner wall of the sliding sleeve (33), and the top block (3203) and the top block (3203 ) and the guide column (32) are connected by the first return spring; the guide column (32) is provided with a conductive cylinder, and one end of the conductive cylinder is slidably provided with a T-shaped conductive block in contact with the outer wire (2) , the T-shaped conductive block is connected to the guide column (32) through a second return spring, and the other end of the conductive cylinder is electrically connected to the electrical element in the body (1). 2. A combiner box for smart grid according to claim 1, characterized in that the cross-section of the sliding sleeve (33) in contact with the top block (3203) is a slope, and the end with a larger slope is far away from the body (1). 3. The combiner box for smart grid according to claim 1, characterized in that, the positioning assembly (34) includes a slide plate (3401) set on the top of the guide column (32), and set on the left and right sides of the slide plate (3401). The two clamping blocks (3402) at both ends and the thimble (3403) are slidably arranged in the installation seat (31) and contact with the clamping block (3402), and the clamping block (3402) and the sliding plate (3401) pass through the third Return spring connection. 4. A combiner box for smart grid according to claim 3, characterized in that, the end of the thimble (3403) away from the block (3402) penetrates the inner wall of the mounting seat (31) and is connected with a pressing plate, so The said pressing plate is connected with the mounting seat (31) through the fourth return spring. 5 . The combiner box for smart grid according to claim 4 , wherein a layer of anti-skid rubber layer is coated on the outer wall of the pressing plate, and the material of the anti-skid rubber layer is anti-skid paint. 6 . 6. A combiner box for smart grid according to claim 5, characterized in that, the materials of the body (1), the mounting base (31), the guide column (32) and the chuck (3201) are all insulated material. 7. A combiner box for a smart grid according to claim 1, characterized in that a limiting plate is provided at the end of the guide column (32) away from the base (31), and the limiting plate is connected with the locking bolt through the locking bolt. The inner wall of the guide column (32) is connected. 8. A combiner box for smart grid according to claim 1, characterized in that a buffer plate is provided on the side of the chuck (3201) close to the outer conductor (2), and there are multiple An arc-shaped anti-slip protrusion in contact with the outer wire (2).