A conductive connection device using galvanized flat steel

Abstract

The present invention relates to a conductive connection device using galvanized flat steel, comprising a power distribution facility installed outdoors, the power distribution facility being provided with a galvanized flat steel for grounding, a concrete grounding pedestal cast on the ground on one side of the galvanized flat steel, a vertical grounding electrode column inserted and fixed in the concrete grounding pedestal, the lower end of the grounding electrode column being inserted into the ground; the upper end of the grounding electrode column extending out of the concrete grounding pedestal is formed with a circular power connection boss, a conductive flat steel is provided above the grounding electrode column, a conductive spring is fixed to the conductive flat steel, a circular carbon brush ring is inserted and fixed in the lower end of the conductive spring, and the carbon brush ring abuts against the upper end surface of the power connection boss; the conductive flat steel is fixed to the galvanized flat steel via a bolt assembly and electrically connected to the galvanized flat steel via a conductive graphite sheet. The conductive connection device has a simple structure, is easy to install and disassemble, and can prevent damage to the conductive connection components when the ground settles; and can still be used by adjustment when the ground settles, thus having a long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive connection structures, and more particularly to a conductive connection device using galvanized flat steel. Background Art

[0002] In power engineering, most distribution facilities require a grounding structure. Existing distribution facilities mostly use galvanized flat steel as a conductive cable for grounding. Usually, the lower end of the galvanized flat steel is bent and a mounting hole is opened. At the same time, a concrete cap is cast on the ground, and a vertical electrode column is set on the concrete cap. Then, the electrode column can pass through the mounting hole at the lower end of the galvanized flat steel and screw nuts to achieve a fixed connection between the galvanized flat steel and the concrete cap, and at the same time, the electrode column and the galvanized flat steel are electrically connected together. However, when installing and removing the galvanized flat steel, the galvanized flat steel needs to be bent to fit on or off the electrode column, which makes installation and removal more laborious.

[0003] Moreover, for some outdoor power distribution facilities installed in coastal areas, the ground in these coastal areas has a serious problem of ground subsidence, and there are also settlement problems of varying degrees in the same area, that is, there is a different degree of subsidence between the power distribution facilities and the concrete pedestal used for grounding (of course, the deviation of the subsidence is small). If the above-mentioned grounding structure is adopted, the galvanized flat steel will be stretched under stress, and in severe cases, the grounding flat steel will be broken, then the grounding resistance will increase or even reach infinity, and the protective grounding will lose its effect. Therefore, it is necessary to design a grounding structure that is easy to install and can avoid settlement deviation. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the existing technology and provide a conductive connection device using galvanized flat steel. The conductive connection device has a simple structure and is easy to install and disassemble. At the same time, it can avoid damage to the conductive connection components when the ground settles.

[0005] A conductive connection device using galvanized flat steel includes a power distribution facility installed outdoors. The power distribution facility is provided with a galvanized flat steel for grounding. A concrete grounding pedestal is cast on the ground on one side of the galvanized flat steel. A vertical grounding electrode column is inserted and fixed in the concrete grounding pedestal. The lower end of the grounding electrode column is inserted into the ground. The upper end of the grounding electrode column extends out of the concrete grounding pedestal and is formed with a circular power connection boss. The middle portion of the power connection boss has a threaded hole.

[0006] A conductive flat steel is provided above the grounding electrode column, and the conductive flat steel includes a horizontal conductive plate, one end of the conductive plate is bent upward to form a vertical upper folded plate, and the other end is bent downward to form a vertical lower folded plate, and reinforcing ribs are welded and fixed on both sides of the conductive plate, the upper folded plate and the lower folded plate respectively; the conductive plate is formed with a socket facing the threaded hole, and the lower end surface of the conductive plate around the socket is fixedly connected with a conductive spring electrically connected to the conductive plate, and the lower end of the conductive spring is plugged and fixed with a circular carbon brush ring, and the carbon brush ring abuts against the upper end surface of the power connection boss; a hinged hole bolt is inserted into the socket of the conductive plate, and the lower end of the hinged hole bolt passes through the carbon brush ring and is screwed into the threaded hole of the power connection boss, and the inner wall of the carbon brush ring abuts against the outer wall of the hinged hole bolt;

[0007] A sealing sleeve is inserted into the hinged hole bolt on the upper side of the conductive plate, and the two ends of the sealing sleeve are pressed against the conductive plate and the head of the hinged hole bolt respectively; an elastic sealing sleeve is fixedly connected to the lower end of the conductive plate outside the conductive spring and the carbon brush ring, and the lower end of the elastic sealing sleeve is inserted into the power connection boss;

[0008] A conductive graphite sheet electrically connected to the galvanized flat steel is fixedly connected to the side wall of the lower end of the galvanized flat steel. The upper folding plate of the conductive flat steel rests on the conductive graphite sheet and is formed with a plurality of vertical adjustment holes. A plurality of groups of bolt assemblies are provided in the adjustment holes. The conductive flat steel is fixedly connected to the galvanized flat steel through the bolt assemblies, and the conductive flat steel is electrically connected to the galvanized flat steel through the conductive graphite sheet.

[0009] Preferably, drainage holes are formed on the reinforcement ribs on both sides of the conductive plate, and the inner wall of the lower end of the drainage hole is flush with the upper end surface of the conductive plate.

[0010] Preferably, the bolt assembly consists of a fastening bolt and a fastening nut, and the fastening bolt is inserted into the adjustment hole of the upper folding plate;

[0011] A plurality of vertical graphite strips are embedded on the end surface of the upper folding plate close to the conductive graphite sheet, and the graphite strips are against the conductive graphite sheet.

[0012] Preferably, the conductive flat steel is electroplated with a zinc coating except for the inner side of the elastic sealing sleeve and the outer surface at the contact point with the conductive graphite sheet;

[0013] The length of the graphite strip is greater than that of the conductive graphite sheet.

[0014] Preferably, the hinged hole bolt consists of a regular hexagonal limit head, an optical axis and a stud. The diameter of the optical axis on the hinged hole bolt is smaller than the aperture of the socket on the conductive flat steel, and the inner aperture of the carbon brush ring is equal to the diameter of the optical axis on the hinged hole bolt.

[0015] Preferably, the elastic sealing sleeve is composed of an upper thin sleeve in the shape of a cylindrical ring at the upper part, a transition thin sleeve in the shape of a conical shape in the middle, and a lower thin sleeve in the shape of a cylindrical ring at the bottom. The upper end of the upper thin sleeve is fixedly connected to the conductive plate. The transition thin sleeve is formed with folds that are offset up and down. The inner wall of the lower thin sleeve is pressed against the outer wall of the electricity connection boss.

[0016] Preferably, a circular retaining plate is formed between the limiting head and the optical axis of the precision reamed bolt;

[0017] The sealing cylinder sleeve includes a rubber sealing sleeve with a cross-section in the shape of a "C". Two groups of pressure rings and a group of compression springs are respectively inserted into the rubber sealing sleeve. Both ends of the compression spring are fixedly connected to the pressure rings. The pressure rings are respectively pasted and fixed on the upper and lower end faces inside the rubber sealing sleeve. The upper and lower ends outside the rubber sealing sleeve are respectively pressed against the retaining plate and the conductive plate.

[0018] Preferably, the lower folding plate on the conductive flat steel is located on one side of the concrete grounding bearing platform and is formed with a vertical guiding groove. A reinforcing component is inserted into the guiding groove. The reinforcing component includes a screw and a rubber spacer in the shape of a "convex". One end of the rubber spacer is inserted into the guiding groove of the lower folding plate. The screw is inserted into the rubber spacer and extends out of the rubber spacer and is screwed and fixed on the concrete grounding bearing platform;

[0019] The reinforcing component is located at the upper part of the guiding groove.

[0020] The beneficial effects of the present invention are as follows:

[0021] The structure of this conductive connection device is simple, and it is convenient for installation and disassembly. At the same time, when the ground subsides, damage to the conductive connection components can be avoided; moreover, it can still be used through adjustment when the ground subsides, and it has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is a front structural schematic diagram of the present invention;

[0024] Figure 3 is a side structural schematic diagram of the present invention;

[0025] Figure 4 is a semi-sectional side structural schematic diagram of the present invention.

[0026] In the figure: 1, galvanized flat steel; 2, concrete grounding bearing platform; 3, grounding electrode column; 4, conductive flat steel; 5, reinforcing rib plate; 6, conductive spring; 7, carbon brush ring; 8, precision reamed bolt; 9, sealing cylinder sleeve; 10, conductive graphite sheet; 11, bolt assembly; 12, graphite strip; 13, reinforcing component; 14, elastic sealing sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Example: See Figures 1 to 4 As shown, a conductive connection device using galvanized flat steel includes a power distribution facility installed outdoors. The power distribution facility is provided with a galvanized flat steel 1 for grounding. A concrete grounding pedestal 2 is cast on the ground on one side of the galvanized flat steel 1. A vertical grounding electrode column 3 is inserted and fixed in the concrete grounding pedestal 2. The lower end of the grounding electrode column 3 is inserted into the ground. The upper end of the grounding electrode column 3 extends out of the concrete grounding pedestal 2 and is formed with a circular power connection boss 31. The middle portion of the power connection boss 31 has a threaded hole 32.

[0028] A conductive flat steel 4 is provided above the grounding electrode column 3. The conductive flat steel 4 includes a horizontal conductive plate 41. One end of the conductive plate 41 is bent upward to form a vertical upper folding plate 42, and the other end is bent downward to form a vertical lower folding plate 43. The conductive plate 41, the upper folding plate 42 and the lower folding plate 43 are respectively welded and fixed with reinforcing ribs 5 on both sides; the conductive plate 41 is formed with a socket 411 that is opposite to the threaded hole 32, and the lower end surface of the conductive plate 41 around the socket 411 is fixedly connected to the conductive plate 4 1 electrically connected to the conductive spring 6, the lower end of the conductive spring 6 is fixedly connected to a circular carbon brush ring 7, and the carbon brush ring 7 abuts against the upper end surface of the power connection boss 31; a hinged hole bolt 8 is inserted into the insertion hole 411 of the conductive plate 41, and the lower end of the hinged hole bolt 8 passes through the carbon brush ring 7 and is screwed into the threaded hole 32 of the power connection boss 31, and the inner wall of the carbon brush ring 7 abuts against the outer wall of the hinged hole bolt 8. Based on the hinged hole bolt 8 and the power connection boss 31, the carbon brush ring 7 can be electrically connected to the grounding electrode column 3;

[0029] A sealing sleeve 9 is inserted into the hinged hole bolt 8 on the upper side of the conductive plate 41, and the two ends of the sealing sleeve 9 are respectively pressed against the conductive plate 41 and the head of the hinged hole bolt 8; an elastic sealing sleeve 14 is fixed to the lower end of the conductive plate 41 outside the conductive spring 6 and the carbon brush ring 7, and the lower end of the elastic sealing sleeve 14 is inserted into the power connection boss 31; the elastic sealing sleeve 14 and the sealing sleeve 9 can prevent the screw portion of the hinged hole bolt 8 and the conductive spring 6 from rusting, thereby preventing rust from affecting the conductive performance;

[0030] A conductive graphite sheet 10 electrically connected to the galvanized flat steel 1 is fixedly connected to the side wall of the lower end of the galvanized flat steel 1. There is no galvanized layer on the galvanized flat steel 1 connected to the conductive graphite sheet 10, otherwise the galvanized layer will affect the conductive performance; the upper folding plate 42 of the conductive flat steel 4 rests on the conductive graphite sheet 10 and is formed with a plurality of vertical adjustment holes 421, and a plurality of groups of bolt assemblies 11 are provided in the adjustment holes 421. The conductive flat steel 4 is fixedly connected to the galvanized flat steel 1 through the bolt assembly 11, and the conductive flat steel 4 is electrically connected to the galvanized flat steel 1 through the conductive graphite sheet 10.

[0031] Drain holes 51 are formed on the reinforcing ribs 5 on both sides of the conductive plate 41. The inner wall of the lower end of the drainage hole 51 is flush with the upper end surface of the conductive plate 41. While the reinforcing ribs 5 are used to reinforce the conductive flat steel 4, the conductive plate 41 may accumulate water due to rainwater, so drainage holes 51 need to be opened.

[0032] The bolt assembly 11 is composed of a fastening bolt 111 and a fastening nut 112. The fastening bolt 111 is inserted into the adjustment hole 421 of the upper folding plate 42. By loosening and adjusting the fastening nut 112, the conductive flat steel 4 can be moved up and down.

[0033] A plurality of vertical graphite strips 12 are embedded on the end surface of the upper folding plate 42 close to the conductive graphite sheet 10 . The graphite strips 12 are against the conductive graphite sheet 10 and can enhance the effect of the conductive connection.

[0034] The conductive flat steel 4 is electroplated with a galvanized coating except for the inner side of the elastic sealing sleeve 14 and the outer surface of the portion in contact with the conductive graphite sheet 10. The galvanized coating can prevent the outer surface of the conductive flat steel 4 from rusting.

[0035] The length of the graphite strip 12 is greater than that of the conductive graphite sheet 10 . When the position of the conductive flat steel 4 is adjusted, the conductive flat steel 4 can be electrically connected to the galvanized flat steel 1 through the graphite strip 12 .

[0036] The described hinged hole bolt 8 is composed of a regular hexagonal limit head, an optical axis and a stud. The diameter of the optical axis on the hinged hole bolt 8 is smaller than the aperture of the socket 411 on the conductive flat steel 4, and the inner aperture of the carbon brush ring 7 is equal to the diameter of the optical axis on the hinged hole bolt 8. When the concrete grounding base 2 and the grounding electrode column 3 sink, they are not necessarily bent vertically to the lower layer, and there is a small horizontal offset. Therefore, the conductive flat steel 4 is electrically connected to the grounding electrode column 3, and the offset and sinking of the grounding electrode column 3 will not cause the conductive flat steel 4 to bend.

[0037] The elastic sealing sleeve 14 is composed of an upper thin sleeve with a cylindrical ring shape, a middle conical transition thin sleeve and a lower thin sleeve with a cylindrical ring shape at the bottom. The upper end of the upper thin sleeve is fixedly connected to the conductive plate 41, and the transition thin sleeve is formed with upper and lower offset folds. The folds can be used to achieve the expansion and contraction of the elastic sealing sleeve 14. The inner wall of the lower thin sleeve is pressed against the outer wall of the power connection boss 31.

[0038] A circular stopper 81 is formed between the limit head of the hinged hole bolt 8 and the optical axis;

[0039] The described sealing cylinder sleeve 9 includes a rubber sealing sleeve 93 with a "C"-shaped cross-section. Two groups of compression rings 92 and a compression spring 91 are respectively inserted into the rubber sealing sleeve 93. The two ends of the compression spring 91 are respectively fixed to the compression rings 92, and the compression rings 92 are respectively pasted and fixed on the upper and lower end faces inside the rubber sealing sleeve 93. The upper and lower ends on the outside of the rubber sealing sleeve 93 are respectively pressed against the retaining disc 81 and the conductive plate 41.

[0040] The lower folding plate 43 on the conductive flat steel 4 is located on one side of the concrete grounding base 2 and is formed with a vertical guiding groove 431. A reinforcement component 13 is inserted into the guiding groove 431. The reinforcement component 13 includes a screw 131 and a rubber spacer 132 with a "convex"-shaped cross-section. One end of the rubber spacer 132 is inserted into the guiding groove 431 of the lower folding plate 43, and the screw 131 is inserted into the rubber spacer 132 and extends out of the rubber spacer 132 and is screwed and fixed on the concrete grounding base 2; the reinforcement component 13 with the screw 131 structure can improve the connection strength between the conductive flat steel 4 and the concrete grounding base 2.

[0041] The described reinforcement component 13 is located in the upper part of the guiding groove 431. When the concrete grounding base 2 sinks, the reinforcement component 13 can move downward along the guiding groove 431.

[0042] Working principle: This structure is a conductive connection device using galvanized flat steel. The conductive connection device includes a galvanized flat steel 1, a grounding electrode column 3, and a conductive flat steel 4. The conductive flat steel 4 is reinforced with reinforcing rib plates 5 to avoid deformation;

[0043] When installing and disassembling, the conductive flat steel 4, as a connecting conductive component, can be disassembled and assembled with the galvanized flat steel 1 and the grounding electrode column 3 respectively. Therefore, there is no need to bend the galvanized flat steel 1, and the installation and disassembly of the conductive connection device are convenient;

[0044] At the same time, when the power distribution facilities and the concrete grounding base 2 have different degrees of settlement, the carbon brush ring 7 electrically connected between the conductive flat steel 4 and the grounding electrode column 3 can move up and down and maintain electrical connection, and will not cause damage such as tensile deformation to the grounding electrode column 3 or the conductive flat steel 4. Through regular inspection and maintenance, when there is a settlement deviation, the original state can be restored by adjusting the position of the conductive flat steel 4.

[0045] The described embodiments are used to illustrate the present invention by way of example, rather than to limit the present invention. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the rights protected by the present invention shall be as listed in the claims of the present invention.

Claims

1. A conductive connection device using galvanized flat steel, comprising a power distribution facility arranged outdoors, wherein the power distribution facility is provided with a galvanized flat steel (1) for grounding, a concrete grounding pedestal (2) is cast on the ground on one side of the galvanized flat steel (1), a vertical grounding electrode column (3) is inserted and fixed in the concrete grounding pedestal (2), and the lower end of the grounding electrode column (3) is inserted in the ground; the characteristics are: The upper end of the grounding electrode column (3) extends out of the concrete grounding base (2) and is formed with a circular power connection boss (31), and a threaded hole (32) is formed in the middle of the power connection boss (31); A conductive flat steel (4) is provided above the grounding electrode column (3), and the conductive flat steel (4) includes a horizontal conductive plate (41), one end of the conductive plate (41) is bent upward to form a vertical upper folding plate (42), and the other end is bent downward to form a vertical lower folding plate (43), and reinforcing ribs (5) are welded and fixed on both sides of the conductive plate (41), the upper folding plate (42) and the lower folding plate (43); the conductive plate (41) is formed with a socket (411) facing the threaded hole (32), and the conductive ribs around the socket (411) are respectively fixed. The lower end surface of the plate (41) is fixedly connected to a conductive spring (6) electrically connected to the conductive plate (41), and the lower end of the conductive spring (6) is plugged and fixed with a circular carbon brush ring (7), and the carbon brush ring (7) abuts against the upper end surface of the power connection boss (31); a hinged hole bolt (8) is inserted into the insertion hole (411) of the conductive plate (41), and the lower end of the hinged hole bolt (8) passes through the carbon brush ring (7) and is screwed into the threaded hole (32) of the power connection boss (31), and the inner wall of the carbon brush ring (7) abuts against the outer wall of the hinged hole bolt (8); A sealing sleeve (9) is inserted into the hinged hole bolt (8) on the upper side of the conductive plate (41), and the two ends of the sealing sleeve (9) are respectively pressed against the conductive plate (41) and the head of the hinged hole bolt (8); an elastic sealing sleeve (14) is fixed to the lower end of the conductive plate (41) outside the conductive spring (6) and the carbon brush ring (7), and the lower end of the elastic sealing sleeve (14) is inserted into the power connection boss (31); A conductive graphite sheet (10) electrically connected to the galvanized flat steel (1) is fixedly connected to the side wall of the lower end of the galvanized flat steel (1); the upper folding plate (42) of the conductive flat steel (4) abuts against the conductive graphite sheet (10) and is formed with a plurality of vertical adjustment holes (421); a plurality of groups of bolt assemblies (11) are provided in the adjustment holes (421); the conductive flat steel (4) is fixedly connected to the galvanized flat steel (1) through the bolt assemblies (11); and the conductive flat steel (4) is electrically connected to the galvanized flat steel (1) through the conductive graphite sheet (10).

2. The conductive connection device using galvanized flat steel according to claim 1, characterized in that: Drain holes (51) are formed on the reinforcement ribs (5) on both sides of the conductive plate (41), and the inner wall of the lower end of the drainage hole (51) is flush with the upper end surface of the conductive plate (41).

3. The conductive connection device using galvanized flat steel according to claim 1, characterized in that: The bolt assembly (11) is composed of a fastening bolt (111) and a fastening nut (112), and the fastening bolt (111) is inserted into the adjustment hole (421) of the upper folding plate (42); A plurality of vertical graphite strips (12) are embedded on the end surface of the upper folding plate (42) on the side close to the conductive graphite sheet (10), and the graphite strips (12) are against the conductive graphite sheet (10).

4. The conductive connection device using galvanized flat steel according to claim 3, characterized in that: The conductive flat steel (4) is electroplated with a zinc coating on its outer surface except for the inner side of the elastic sealing sleeve (14) and the contact portion with the conductive graphite sheet (10); The length of the graphite strip (12) is greater than the length of the conductive graphite sheet (10).

5. The conductive connection device using galvanized flat steel according to claim 1, characterized in that: The described precision reamed hole bolt (8) consists of a regular hexagonal limiting head, a smooth shaft, and a stud. The diameter of the smooth shaft on the precision reamed hole bolt (8) is smaller than the aperture diameter of the jacking hole (411) on the conductive flat steel (4), and the inner aperture diameter of the carbon brush ring (7) is equal to the diameter of the smooth shaft on the precision reamed hole bolt (8).

6. The conductive connection device using galvanized flat steel according to claim 5, characterized in that: The described elastic sealing sleeve (14) consists of an upper thin sleeve in the shape of a cylindrical ring at the upper part, a transition thin sleeve in the shape of a conical shape in the middle, and a lower thin sleeve in the shape of a cylindrical ring at the bottom. The upper end of the upper thin sleeve is fixedly connected to the conductive plate (41), the transition thin sleeve is formed with upper and lower offset folds, and the inner wall of the lower thin sleeve is pressed against the outer wall of the power connection boss (31).

7. The conductive connection device using galvanized flat steel according to claim 5, characterized in that: A circular retaining plate (81) is formed between the limiting head and the smooth shaft of the described precision reamed hole bolt (8); The described sealing cylinder sleeve (9) includes a rubber sealing sleeve (93) with a cross-section in the shape of a "匚" character. Two groups of compression rings (92) and a group of compression springs (91) are respectively inserted into the rubber sealing sleeve (93). The two ends of the compression spring (91) are respectively fixedly connected to the compression rings (92), and the compression rings (92) are respectively pasted and fixed on the upper and lower end faces inside the rubber sealing sleeve (93). The upper and lower ends on the outside of the rubber sealing sleeve (93) are respectively pressed against the retaining plate (81) and the conductive plate (41).

8. The conductive connection device using galvanized flat steel according to claim 5, characterized in that: The lower folding plate (43) on the described conductive flat steel (4) is located on one side of the concrete grounding bearing platform (2) and is formed with a vertical guiding groove (431). A reinforcing component (13) is inserted into the guiding groove (431). The reinforcing component (13) includes a screw (131) and a rubber spacer sleeve (132) with a cross-section in the shape of a "凸" character. One end of the rubber spacer sleeve (132) is inserted into the guiding groove (431) of the lower folding plate (43), and the screw (131) is inserted into the rubber spacer sleeve (132) and extends out of the rubber spacer sleeve (132) and is screwed and fixed on the concrete grounding bearing platform (2); The described reinforcing component (13) is located at the upper part of the guiding groove (431).

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