CN103036166A - Slide-up fixing device of weak current ground copper bar - Google Patents

Abstract

A side-up fixing device of a weak current ground copper bar comprises a supporting piece (1) and a clamping device (2), wherein a slot mouth is arranged in the center of the bottom of the clamping device (2). The slot bottom is a copper bar placing position (4), clamping device protrusions (8) are arranged on outer sides of a clamping slot (5), and notch grooves which correspond to the clamping device protrusions (8) are arranged at the upper end of the supporting piece (1). Limiting blocking edges (10) are arranged on the inner side of the notch grooves, a round boss (6) is arranged on the outer periphery of the upper end of the supporting piece (1), and the boss (6) is connected with the interior of the clamping slot (5) of the clamping device in a clamped mode. The clamping device protrusions (8) are clamped in the notch grooves. The copper bar can be clamped and fixed through the supporting piece, the structure is simple and the installation is convenient. Electric conduction cross section of the copper bar and the mechanical strength cannot be reduced. Besides, the copper bar can stretch along the axial direction, and deformation along the axial direction caused by temperature change can be absorbed, so the adaptability is strong.

Description

A sliding cover type fixing device for weak current grounding copper bar

technical field

The invention relates to a fixing device, in particular to a sliding cover type fixing device for a weak current grounding copper bar. the

Background technique

In the substation, in addition to the grounding body used in the high-current grounding system, a grounding copper bar is used because of the anti-interference requirements of weak current equipment. According to relevant requirements, this kind of grounding copper bar needs to be supported by insulating materials in certain places. The fixing method at this stage is: use a low-voltage support insulator, open a hole in the copper bar, and fix the copper bar and the insulator together with a bolt. The disadvantages of this connection are: 1. The opening on the copper bar reduces the effective cross-section; 2. The copper bar is fixed and cannot be stretched in the axial direction, and cannot accommodate the axial deformation caused by temperature stress, and sometimes it will damage the insulator. . In view of this, it is necessary to invent a novel fixing device to overcome the above-mentioned shortcoming. It can be non-conductive, insulate the copper bar from the ground, fix the copper bar and the bottom structure, and enable the copper bar to expand and contract in the axial direction.

For example, the Chinese utility model patent announcement number: CN202405716U, publication date: August 29, 2012. The utility model patent discloses a copper bar support and fixing device, including a bus bar bracket and a bus bar card, and is characterized in that: a bus bar is opened on the bus bar bracket Bracket fixing holes, busbar card fixing holes and busbar card installation holes, the busbar card is provided with fixing holes and installation holes corresponding to the busbar card fixing holes and busbar card installation holes, and the busbar card is fixed on the busbar bracket. However, the device has a large volume. When installing the copper bars, the copper bars need to be inserted into the installation holes, which is inconvenient to install, and it is easy to shake after installation, thereby affecting the reliability of the copper bar connection. the

Contents of the invention

The purpose of the present invention is to provide a structure for the defects and deficiencies of the existing weak current grounding copper bar by opening holes on the copper bar so that the conductive section of the copper bar is reduced, the mechanical strength is weakened, and it cannot adapt to temperature changes. Simple, easy to install, does not change the conductive cross-section and mechanical strength of the copper bar, and is a sliding cover type fixing device for weak current grounding copper bars that can adapt to temperature changes.

In order to achieve the above object, the technical solution of the present invention is: a sliding cover-type fixing device for weak current grounding copper bars, including a support and a clamp. Placement position, the vertical distance from the bottom of the slot on both sides of the notch is the thickness of the copper bar. There is a card slot symmetrically. The outside of the slot is a clamp protrusion. The support is cylindrical. The notch groove corresponding to the protrusion of the fixture, the inner side of the notch groove is provided with a limit rib, and the outer circumference of the upper end of the support is provided with a circular boss, and the boss is clamped in the slot of the fixture, and the fixture The protrusion is snapped into the groove of the notch, and the limit rib fits against the side of the fixture.

The cross-section of the place where the copper bars are placed is the same as the cross-section of the copper bars.

The outer circular surface of the support is provided with wavy skirts distributed along the axial direction of the support.

The clamp is made of the same insulating material as the support.

A threaded hole is opened at the center of the bottom of the support member.

The upper end surface of the fixture is an arc surface.

The beneficial effects of the present invention are:

1. The center of the bottom of the fixture of the present invention is provided with a notch, and the bottom of the groove is provided with a place for copper bars, and the side of the notch is provided with a slot, and the circular boss at the upper end of the support is snapped into the slot, and the copper bar can pass through the support. The components are clamped and fixed, and there is no need to open a fixing hole on the copper bar.

2. The invention has simple structure, small space occupation, convenient installation, does not reduce the conductive cross-section of the copper bar and the mechanical strength of the copper bar, and at the same time, the copper bar can also expand and contract in the axial direction, and can accommodate axial deformation caused by temperature changes. Will not strain the insulators, more adaptable.

Description of drawings

FIG. 1 is a front view of a fixture 2 of the present invention.

FIG. 2 is a top view of the jig 2 of the present invention.

Fig. 3 is a front view of the present invention.

Figure 4 is a top view of the present invention.

Fig. 5 is a front view of the support 1 of the present invention.

Fig. 6 is a top view of the support member 1 of the present invention.

In the figure: support piece 1, fixture 2, copper bar 3, copper bar placement position 4, card slot 5, boss 6, skirt 7, fixture protrusion 8, threaded hole 9, limit rib 10.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. the

Referring to Fig. 1 to Fig. 6, a slide-type fixing device for a weak current grounding copper bar of the present invention includes a support 1 and a clamp 2, a notch is provided in the center of the bottom of the clamp 2, and the bottom of the slot is a copper bar Placement position 4, the vertical distance from the bottom of the groove on both sides of the notch is the thickness of the copper bar 3. A slot 5 is symmetrically opened. The outside of the slot 5 is a clamp protrusion 8. The support member 1 is cylindrical and supports The outer circumference of the upper end of the part 1 is provided with a notch groove corresponding to the fixture protrusion 8, the inner side of the notch groove is provided with a limit rib 10, and the upper end of the support part 1 is provided with a circular boss 6, and the boss 6 It is clamped in the clamping groove 5 of the clamp 2 , the clamp protrusion 8 is clamped into the notch groove, and the limit rib 10 fits against the side of the clamp 2 .

The cross section of the copper bar placement position 4 is the same as that of the copper bar 3 .

The outer circular surface of the support member 1 is provided with wavy skirts 7 distributed along the axial direction of the support member 1 .

The clamp 2 is made of the same insulating material as the support 1 .

A threaded hole 9 is opened at the center of the bottom of the support member 1 .

The upper end surface of the fixture 2 is an arc surface.

There is a notch in the center of the bottom of the fixture 2, and the bottom of the groove is the copper row placement position 4, the depth of the copper row placement position 4 is the same as the thickness of the copper row 3, so that the copper row 3 can be directly placed in the copper row placement position 4, After the copper bar 3 is placed in the copper bar placement position 4, the copper bar placement position 4 and the copper bar 3 are in sliding fit, and will not shake from side to side. On both sides of the notch, the vertical distance from the bottom of the groove is symmetrically provided with a slot 5 at a position where the thickness of the copper bar 3 is symmetrical. The outside of the slot 5 is a clamp protrusion 8, and the upper end surface of the clamp 2 is an arc surface, which can Avoid accumulating water on the upper end of fixture 2.

The support part 1 is cylindrical, and the support part 1 and the fixture 2 are made of the same insulating material, so that the deformation of the support part 1 and the fixture 2 is consistent with the temperature change, so as to ensure that the combined tolerance does not change with the temperature change Variety. The outer circular surface of the support member 1 is provided with wavy skirts 7 distributed along the axial direction of the support member 1. The skirts 7 can have a better insulation effect and prevent breakdown by high voltage. A threaded hole 9 is provided at the center of the bottom of the support member 1 , and the support member 1 can be fixed on other fixing members through the threaded hole 9 .

The outer circumference of the upper end of the support member 1 is provided with a notch groove corresponding to the fixture protrusion 8 , and the upper end of the support member 1 is provided with a circular boss 6 . The boss 6 is clamped in the clamping groove 5 of the clamp 2, the clamp protrusion 8 is clamped into the notch groove, the support member 1 is effectively clamped into the clamp 2, and the limit rib 10 is aligned with the clamp The sides of the 2 are fitted together, thus effectively ensuring the accuracy of the positions of the support 1 and the clamp 2 after installation. When installing the copper bar 3, first place the copper bar 3 on the fixed support 1, the clamp 2 is stuck on the copper bar 3 from the gap between the two support 1, and then gradually slide the clamp 2 to the support piece 1 until clamp 2 fits into place with support piece 1. After the support piece 1 is snapped in, the copper bar 3 placed in the copper bar placement position 4 is clamped and fixed. Fixing the copper bar 3 in this way effectively avoids the need to open a fixing hole on the copper bar for the traditional fixed copper bar. Reduce the conductive section of the copper bar and the mechanical strength of the copper bar. At the same time, the copper bar 3 can also expand and contract in the axial direction to absorb the axial deformation caused by the temperature change, and the adaptability is stronger. the

Claims (6)

1. the sliding cover type fixture of a light current grounding copper bar, comprise supporter (1) and jig (2), it is characterized in that: the bottom center of described jig (2) is provided with notch, bottom land is that copper bar is placed position (4), be that the position symmetry of copper bar (3) thickness offers draw-in groove (5) apart from the vertical range of bottom land on the two sides of notch, the outside of draw-in groove (5) is jig projection (8), supporter (1) is cylindrical, the upper end of supporter (1) offers the breach groove corresponding with jig projection (8), the inboard of breach groove is provided with spacing rib (10), be provided with round boss (6) on the upper end excircle of supporter (1), boss (6) is connected in the draw-in groove (5) of jig (2), jig projection (8) snaps in the breach groove, and the side of spacing rib (10) and jig (2) fits.

2. the sliding cover type fixture of a kind of light current grounding copper bar according to claim 1 is characterized in that: the cross section that described copper bar is placed position (4) is identical with the cross section of copper bar (3).

3. the sliding cover type fixture of a kind of light current grounding copper bar according to claim 1 is characterized in that: be provided with on the outer round surface of described supporter (1) along the corrugated shirt rim (7) of supporter (1) axial distribution.

4. the sliding cover type fixture of a kind of light current grounding copper bar according to claim 1 is characterized in that: described jig (2) adopts the insulating material identical with supporter (1) to make.

5. the sliding cover type fixture of a kind of light current grounding copper bar according to claim 1, it is characterized in that: the bottom centre of described supporter (1) offers screwed hole (9).

6. the sliding cover type fixture of a kind of light current grounding copper bar according to claim 1, it is characterized in that: the upper surface of described jig (2) is arc surface.

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