Shielding cover convenient to install

Abstract

The utility model discloses a shielding case convenient to install, which comprises an aluminum alloy shielding case body, four groups of fixing blocks are uniformly arranged on the inner wall of the shielding case body, and through holes are formed in the fixing blocks; a wiring copper bar is arranged in the shielding cover body, a cross-shaped support is arranged at the top of the wiring copper bar, and the cross-shaped support is connected with a fixing block through a bolt; fixing holes and insertion holes are formed in the wiring copper bars, the fixing holes are formed in the front faces of the wiring copper bars, and the insertion holes are formed in the bottom planes of the wiring copper bars; limiting columns are arranged in the fixing holes, grooves are formed in the limiting columns, and sawteeth are arranged on one faces of the inner sides of the grooves. A threaded rod is arranged in the inlet hole, and the tail end of the threaded rod is matched with the groove of the limiting column. According to the utility model, the structure is novel, the threaded rod and the limiting column are vertically intersected and limited to form a combined structure, screwing can be conveniently realized from the opening of the shielding case, and the situation that a copper bar cannot be installed due to insufficient internal space of a small-sized shielding case is avoided.

Description

Technical Field

[0001] The utility model relates to the field of shielding covers, in particular to a shielding cover which is convenient to install. Background Art

[0002] The transformer shield is a shell used to protect the transformer. Its main purpose is to reduce external interference to the transformer and prevent the electromagnetic radiation inside the transformer from causing adverse effects on the surrounding environment or equipment. It can be installed on the transformer in an internal or external manner to completely or partially isolate the transformer's electromagnetic field.

[0003] Under the traditional structure, the copper busbar is fixed to the wiring copper busbar directly by bolts and nuts. However, since the fixing holes are inside, when the bolts are fixed by instruments, there is insufficient internal space, especially in a small shielding cover, and it is impossible to extend into the shielding cover, resulting in failure to apply force, which further leads to the bolt connection being not tight enough and the copper busbar is prone to loosening. At the same time, some transformer shielding covers use welding to fix the wiring copper busbar, which is not easy to disassemble and cannot be more widely used in different working conditions. Utility Model Content

[0004] The utility model aims to provide a shielding cover which is convenient and quick to install.

[0005] The purpose of the utility model is achieved as follows: a shielding cover that is easy to install, comprising an aluminum alloy shielding cover body, four groups of fixing blocks are evenly arranged on the inner wall of the shielding cover body, and the fixing blocks are provided with through holes; a wiring copper bar is arranged inside the shielding cover body, and a cross bracket is arranged on the top of the wiring copper bar, and the cross bracket is connected to the fixing block by bolts; a fixing hole and an insertion hole are arranged on the wiring copper bar, the fixing hole is located on the front side of the wiring copper bar, and the insertion hole is located on the bottom plane of the wiring copper bar; a limiting column is arranged in the fixing hole, a groove is opened on the limiting column, and a sawtooth is arranged on one side of the inner side of the groove; a threaded rod is arranged in the insertion hole, and the end of the threaded rod cooperates with the groove of the limiting column.

[0006] Preferably, the limiting column is a rectangular parallelepiped, a pressure plate is provided at one end of the limiting column, and the other end of the limiting column is inserted into the fixing hole after passing through the copper busbar, and the shape of the fixing hole is consistent with the cross-section of the limiting column.

[0007] Preferably, the groove is a rectangular frame, the length of the rectangular frame is greater than the diameter of the insertion hole, and after the limiting column is inserted into the fixing hole, the groove on the limiting column is opposite to the fixing hole, and the positive projection of the fixing hole is located within the outline of the groove.

[0008] Preferably, the insertion hole is composed of a threaded portion and a non-threaded portion, the non-threaded portion is close to the entrance of the insertion hole, and the threaded portion is close to the fixing hole.

[0009] Preferably, a tip is provided at the end of the threaded rod, and a cross serration is provided at the tip. After the threaded rod is rotated downward, the cross serration engages with the serration in the groove.

[0010] Compared with the existing technology, the utility model is beneficial in that:

[0011] 1. The traditional structure is that the wiring copper bar is fixed directly by bolts and nuts. However, since the fixing holes are inside, when the bolts are fixed by instruments, it is impossible to apply force due to insufficient internal space, which further leads to the bolt connection not being tight enough and easy to loosen. The threaded rod is set perpendicular to the limit column, and the screwed-in threaded rod is engaged with the limit column to fix the limit column, so that it is convenient for the screwdriver to tighten at the entrance of the shielding cover, with large space and convenient operation.

[0012] 2. The internal wiring copper busbar is detachably connected to the shielding cover through a cross bracket, so that it can be used under different working conditions with higher adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal matching structure of the wiring copper bar of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the new limit column of the present utility model.

[0016] Among them, 1 shielding cover, 2 fixing block, 3 wiring copper bus, 301 fixing hole, 302 insertion hole, 3021 threaded part, 3022 non-threaded part, 4 cross bracket, 5 limit column, 501 groove, 502 sawtooth, 503 pressure plate, 6 threaded rod, 601 tip, 6011 cross sawtooth. DETAILED DESCRIPTION

[0017] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-3 As shown, a shielding cover that is easy to install includes an aluminum alloy shielding cover body 1, four groups of fixing blocks 2 are evenly arranged on the inner wall of the shielding cover body 1, and the fixing blocks 2 are provided with through holes; a wiring copper busbar 3 is arranged inside the shielding cover body 1, and a cross bracket 4 is arranged on the top of the wiring copper busbar 3, and the cross bracket 4 is connected to the fixing block 2 by bolts; a fixing hole 301 and an insertion hole 302 are arranged on the wiring copper busbar 3, the fixing hole 301 is located on the front side of the wiring copper busbar 3, and the insertion hole 302 is located on the bottom plane of the wiring copper busbar 3; a limiting column 5 is arranged in the fixing hole 301, a groove 501 is opened on the limiting column 5, and a sawtooth 502 is arranged on one side of the inner side of the groove; a threaded rod 6 is arranged in the insertion hole 302, and the end of the threaded rod 6 cooperates with the groove of the limiting column 5; two groups of fixing holes, i.e., insertion holes, are provided, and when operating and fixing, they can be repeated twice.

[0021] like Figure 2-3 As shown, the limiting column 5 is a rectangular parallelepiped, and a pressure plate 503 is provided at one end of the limiting column 5. The other end of the limiting column 5 passes through the copper bus and is inserted into the fixing hole 301. The shape of the fixing hole is consistent with the cross-section of the limiting column. When the limiting column is inserted, the groove side is facing the insertion hole.

[0022] like Figure 2-3As shown, the groove 501 is a rectangular frame, the length of which is greater than the diameter of the insertion hole 302. After the limiting column 5 is inserted into the fixing hole 301, the groove 501 on the limiting column is directly opposite to the fixing hole, and the positive projection of the fixing hole 301 is located within the contour of the groove 501, ensuring that when the threaded rod is subsequently rotated downward, the tip can contact the serrations of the groove to form a limit.

[0023] like Figure 2 As shown, the insertion hole 302 is composed of a threaded portion 3021 and a non-threaded portion 3022. The non-threaded portion 3022 is close to the entrance side of the insertion hole 302, and the threaded portion 3021 is close to the fixing hole 301. This facilitates direct insertion of the threaded rod without having to rotate all the way to the bottom of the insertion hole, thereby improving installation efficiency.

[0024] like Figure 2 As shown, a tip 601 is provided at the end of the threaded rod 6, and a cross serration 6011 is provided at the tip 601. After the threaded rod is rotated downward, the cross serration 6011 engages with the serration 502 in the groove, and the limiting column is inserted into the fixing hole. The threaded rod is rotated downward until the cross serration contacts the serration, and then stops rotating. At this time, the limiting column presses the copper bar to fix it.

[0025] The working principle of the utility model is explained as follows: when in use, the limit column is passed through the copper busbar, and the other end of the limit column is inserted into the fixing hole, and then the threaded rod is inserted from the insertion hole, and the threaded rod is tightened downward until the cross serrations and the serrations of the limit column are in conflict and cannot rotate; the operation can be repeated in another set of insertion holes; in this way, when fixing the screw rod, the fixing device can be placed at the entrance of the shielding cover for operation without extending into the shielding cover, so as to avoid insufficient space for installation.

[0026] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A shielding cover that is easy to install, characterized in that: It comprises an aluminum alloy shielding cover body, four groups of fixing blocks are evenly arranged on the inner wall of the shielding cover body, and the fixing blocks are provided with through holes; a wiring copper bar is arranged inside the shielding cover body, a cross bracket is arranged on the top of the wiring copper bar, and the cross bracket is connected to the fixing block by bolts; a fixing hole and an insertion hole are arranged on the wiring copper bar, the fixing hole is located on the front side of the wiring copper bar, and the insertion hole is located on the bottom plane of the wiring copper bar; a limiting column is arranged in the fixing hole, a groove is opened on the limiting column, and a sawtooth is arranged on one side of the inner side of the groove; a threaded rod is arranged in the insertion hole, and the end of the threaded rod cooperates with the groove of the limiting column.

2. A shielding cover that is easy to install according to claim 1, characterized in that: The limiting column is a rectangular parallelepiped, a pressing plate is provided at one end of the limiting column, and the other end of the limiting column is inserted into the fixing hole after passing through the copper bar, and the shape of the fixing hole is consistent with the cross-section of the limiting column.

3. The shielding cover that is easy to install according to claim 1, characterized in that: The groove is a rectangular frame, the length of which is greater than the diameter of the insertion hole. After the limiting column is inserted into the fixing hole, the groove on the limiting column is opposite to the fixing hole, and the positive projection of the fixing hole is located within the outline of the groove.

4. The shielding cover that is easy to install according to claim 1, characterized in that: The insertion hole is composed of a threaded portion and a non-threaded portion, wherein the non-threaded portion is close to the insertion hole entrance side, and the threaded portion is close to the fixing hole side.

5. The shielding cover that is easy to install according to claim 1, characterized in that: A tip is provided at the end of the threaded rod, and a cross sawtooth is provided at the tip. After the threaded rod is rotated downward, the cross sawtooth is meshed with the sawtooth in the groove.

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