CN213717079U - Flexible ground rod based on flexible shaft - Google Patents

Abstract

The utility model discloses a flexible earth bar based on flexible axle, it includes earth connection fixing bolt (1), fixed connecting rod (3), fastener stiff end (6), fastener expansion end (7), fastener lower part (8), fastener screw rod (9), flexible axle (10), bearing (11), insulating rod (12) etc.. The utility model discloses it is more convenient to make the special earth connection of non-level, non-vertical ground point of transformer substation install, reduces operation personnel operation risk, and when installing the earth connection to special ground point, the operation personnel need not the slope and lift the earth bar and install the operation, and operation safety, convenient to use, labour saving and time saving.

Description

Flexible ground rod based on flexible shaft

Technical Field

The utility model relates to a flexible earth bar based on flexible axle belongs to electrical industry technical field.

Background

At present, grounding wire insulation operating rods used by power transformation operators are classified according to grounding wire conductor ends, and only have two types, namely a common type and a right-angle type. The two grounding rods are respectively suitable for the two situations that the wire to be grounded is in a horizontal state and a vertical state, as seen from the most common situation that the wire is grounded. However, there are still many grounding points in the substation, i.e. not horizontal or vertical, but at any angle to the horizontal. For example, the drainage wire of a main transformer bushing which is installed obliquely, the drainage wire of a partial lightning arrester, a current transformer, a coupling capacitor which is tensioned obliquely upwards, and the like. Because of the existence of the special included angle, when the common or right-angle ground rod is used for installation at the position, the ground wire insulating rod needs to be correspondingly inclined to be installed reluctantly, and the man-machine effect is poor. And the grounding wire installed obliquely has a large dead weight and an unstable state, and is easy to fall off during installation. The light person smashes the porcelain bottle and damages the equipment, and the heavy person smashes ground personnel in the falling process.

In view of the above problems, the flexible shaft-based flexible ground rod has strong applicability in the grounding operation of the transformer substation.

SUMMERY OF THE UTILITY MODEL

To the above problem, the to-be-solved technical problem of the utility model is to provide a flexible earth bar based on flexible axle, the high-pressure primary equipment earth connection more than the 110kV of being convenient for realize the transformer substation is installed, improves the transformer substation earth connection and installs the operating efficiency. The technical scheme of the utility model is that: a flexible ground rod based on a flexible shaft comprises a ground wire fixing bolt, a fixing connecting rod, a wire clamp fixing end, a wire clamp movable end, a wire clamp lower part, a wire clamp screw rod, a flexible shaft, a bearing and an insulating rod, wherein the flexible shaft is a bendable transmission shaft, the upper end of the flexible shaft is connected with the wire clamp screw rod, and the lower end of the flexible shaft is connected with the insulating rod; the wire clamp screw penetrates through the lower portion of the wire clamp to be in contact with the movable end of the wire clamp, the other end of the wire clamp screw is connected with the flexible shaft, the other end of the flexible shaft is connected with the insulating rod, the insulating rod is provided with a bearing, a connecting rod perforation is connected to the outside of the bearing, and the fixed connecting rod is fixed between the lower portion of the wire clamp and the insulating rod.

Furthermore, the lower end of the fixed connecting rod is connected with the lower part of the wire clamp through a connecting rod bolt, and the upper end of the fixed connecting rod is fastened with the connecting rod through hole through a fastening knob.

Furthermore, the ground wire fixing bolt is connected with the wire clamp fixing end, the wire clamp movable end and the lower part of the wire clamp into a whole.

The basic principle is that the rotating force is transmitted to the wire clamp screw rod through the flexible shaft by rotating the insulating rod, the wire clamp screw rod is driven to penetrate through the lower portion of the wire clamp to rotate, the distance between the fixed end of the wire clamp and the movable end of the wire clamp is adjusted through the internal thread of a hole in the lower portion of the wire clamp, pre-grounding equipment penetrating between the fixed end of the wire clamp and the movable end of the wire clamp is clamped, and the equipment is grounded through a grounding wire. For the contained angle between fixing bolt bearing and the insulating rod, set up fixed connecting rod between clamp lower part and insulating rod, fixed connecting rod upper end links to each other with the clamp lower part through the connecting rod bolt, and the lower extreme passes through fastening knob and the perforation fastening of connecting rod, guarantees the fixed angle and the mechanical connection between insulating rod and the clamp lower part to link to each other with the insulating rod through the bearing, guarantee the normal rotation of insulating rod. The rotating force is transmitted to the wire clamp screw rod through the flexible shaft, so that the transmission of the rotating force can be ensured, and meanwhile, due to the characteristic that the flexible shaft is easy to bend, the wire clamp screw rod and the insulating rod can form any included angle of 0-90 degrees. The blank that only a vertical grounding wire with an included angle of 0 degree and a right-angle grounding wire with an included angle of 90 degrees exist in field work is filled. In order to fix the included angle between the wire clamp screw rod and the grounding rod, a fixed connecting rod component is arranged at the bottom of the wire clamp and the upper end of the grounding rod. When the angle between the wire clamp screw and the insulating rod is changed, the connecting rod penetrating through the knob at the top of the insulating rod is correspondingly changed, and the wire clamp and the insulating rod are fixed by fastening through the knob. The bearing is arranged between the knob and the insulating rod, so that the knob does not rotate along with the rotation of the grounding rod when the grounding rod rotates, and the influence on the basic rotation function of the grounding rod is avoided.

The utility model has the advantages that: high-pressure primary equipment earth connection more than 110kV convenient to realize transformer substation installs, improves the transformer substation earth connection and installs the operating efficiency, makes the special earth connection of transformer substation non-level, non-perpendicular ground point install more conveniently, reduces operation personnel operation risk, when installing the earth connection to special ground point, the operation personnel need not the slope and lifts the earth bar and install the operation, and safe in operation, convenient to use, labour saving and time saving.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-ground wire fixing bolt, 2-connecting rod bolt, 3-fixing connecting rod, 4-fastening knob, 5-connecting rod perforation, 6-wire clamp fixing end, 7-wire clamp movable end, 8-wire clamp lower part, 9-wire clamp screw rod, 10-flexible shaft, 11-bearing and 12-insulating rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

as shown in fig. 1, a flexible ground rod based on a flexible shaft includes: the cable clamp comprises a ground wire fixing bolt 1, a connecting rod bolt 2, a fixing connecting rod 3, a fastening knob 4, a connecting rod through hole 5, a cable clamp fixing end 6, a cable clamp movable end 7, a cable clamp lower part 8, a cable clamp screw rod 9, a flexible shaft 10, a bearing 11 and an insulating rod 12; the ground wire fixing bolt 1 is connected with the wire clamp fixing end 6, the wire clamp movable end 7 and the wire clamp lower part 8 into a whole, the flexible shaft 10 is a bendable transmission shaft, the upper end is connected with the wire clamp screw rod 9, the lower end is connected with the insulating rod 12, the wire clamp screw rod 9 penetrates through the wire clamp lower part 8 to be contacted with the wire clamp movable end 7, the other end of the wire clamp screw rod 9 is connected with the flexible shaft 10, the insulating rod 12 is connected with the other end of the flexible shaft 10, the insulating rod 12 is provided with the bearing 11, the external connection of the bearing 11 is provided with the connecting rod perforation 5. The lower end of the fixed connecting rod 3 is connected with the lower part 8 of the wire clamp through a connecting rod bolt 2, and the upper end of the fixed connecting rod 3 is fastened through a fastening knob 4 and a connecting rod through hole 5.

The basic principle is as follows: the rotary force is transmitted to the wire clamp screw rod 9 through the flexible shaft 10 by rotating the insulating rod 12, the wire clamp screw rod 9 is driven to penetrate through the wire clamp lower part 8 to rotate, the distance between the wire clamp fixing end 6 and the wire clamp movable end 7 is adjusted through the internal thread of the hole of the wire clamp lower part 8, pre-grounding equipment penetrating between the wire clamp fixing end and the wire clamp movable end is clamped, and the equipment is grounded through a grounding wire connected by a grounding wire fixing bolt 1. For the contained angle between fixing bolt bearing 11 and the insulating rod 12, set up fixed connecting rod 3 between clamp lower part 8 and insulating rod 12, fixed connecting rod 3 upper end passes through connecting rod bolt 2 and links to each other with clamp lower part 8, and the lower extreme passes through fastening knob 4 and the 5 fastenings of connecting rod perforation, guarantees the angle between insulating rod 12 and the clamp lower part 8 and fixed and mechanical connection to link to each other with insulating rod 12 through bearing 11, guarantee insulating rod 12's normal rotation.

The working principle of the specific embodiment is as follows: the inclination angle of pre-grounding equipment is considered, the included angle between the wire clamp screw rod 9 and the insulating rod 12 is adjusted, the included angle is fixed through the fastening knob 4, the insulating rod 12 is kept in the state perpendicular to the ground with the least labor, the pre-grounding equipment penetrates through the space between the wire clamp fixed end 6 and the wire clamp movable end 7, the insulating rod 12 is rotated, the distance between the wire clamp fixed end 6 and the wire clamp movable end 7 is adjusted, the clamping and grounding equipment is clamped, grounding operation is completed, and the dismounting operation can be achieved through reversely rotating the insulating rod 12.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. The utility model provides a flexible earth bar based on flexible axle which characterized in that: the cable clamp comprises a ground wire fixing bolt (1), a fixing connecting rod (3), a cable clamp fixing end (6), a cable clamp movable end (7), a cable clamp lower part (8), a cable clamp screw rod (9), a flexible shaft (10), a bearing (11) and an insulating rod (12); flexible axle (10) is flexible transmission shaft, wire clamp screw rod (9) is connected to the upper end, insulating stick (12) is connected to the lower extreme, wire clamp screw rod (9) pass fastener lower part (8) and fastener expansion end (7) contact, the other end and the flexible axle (10) hookup of wire clamp screw rod (9), insulating stick (12) are connected to the other end of flexible axle (10), be equipped with bearing (11) on insulating stick (12), the external connection of bearing (11) has connecting rod perforation (5), fixed connecting rod (3) are fixed between fastener lower part (8) and insulating stick (12).

2. The flexible ground rod based on the flexible shaft according to claim 1, characterized in that: the lower end of the fixed connecting rod (3) is connected with the lower part (8) of the wire clamp through a connecting rod bolt (2), and the upper end of the fixed connecting rod (3) is fastened through a fastening knob (4) and a connecting rod through hole (5).

3. The flexible ground rod based on the flexible shaft according to claim 1, characterized in that: the ground wire fixing bolt (1) is connected with the wire clamp fixing end (6), the wire clamp movable end (7) and the wire clamp lower part (8) into a whole.

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