CN220456693U - Anti-drop U type presss from both sides formula earth bar - Google Patents

Abstract

The utility model relates to the technical field of electrical equipment, in particular to an anti-falling U-shaped clamp type grounding rod, which comprises an anti-falling structure arranged on a U-shaped fixing frame in the U-shaped clamp type grounding rod and used for preventing bare wires from falling off; the anti-drop structure includes two buckle springs and two pre-compaction pieces, one end crimping of buckle spring is in on the U type mount, buckle spring's middle part with the U type mount is articulated to link to each other, and the other end passes through pre-compaction piece is buckled and is pressed on the U type mount so that buckle spring has the pretightning force, two buckle springs follow the central line of U type mount is symmetric distribution, so that two buckle springs to the central line of U type mount presss from both sides tightly and forms anti-drop bayonet socket. According to the utility model, an anti-falling structure is added on the basis of the existing U-shaped clamp type grounding rod, so that the falling accident of the U-shaped clamp type grounding rod is prevented, and the safety of personnel and equipment in the overhaul process is ensured.

Description

Anti-drop U type presss from both sides formula earth bar

Technical Field

The utility model belongs to the technical field of electrical equipment, and relates to an anti-falling U-shaped clamp type grounding rod.

Background

In the process of equipment power outage maintenance, in order to protect personnel and equipment, a cable which can endanger the safety of the personnel and the equipment and leads the current to the ground through one line is called a grounding line. The grounding rod is a special safety tool which is used for ensuring good contact between the grounding wire and equipment and realizing firm grounding wire connection and protecting the safety of personnel and equipment.

The grounding bars are more in general category, and can be divided into U-shaped clamps, duck tongue type grounding bars, flat spiral type grounding bars and the like according to different grounding functions, wherein the U-shaped clamp type grounding bars are mainly used for grounding bare wires, in particular to the grounding of the bare wires in a transformer substation. The existing U-shaped clip type grounding rod comprises an operation rod 2, a U-shaped fixing frame 5 connected to one end of the operation rod 2, two clip tongues 6 hinged to the U-shaped fixing frame 5 and two clip tongue springs 7 used for pressing the clip tongues 6, wherein the clip tongues 6 are hinged to the U-shaped fixing frame 5 through hinges, the clip tongues 6 can rotate around the hinges by a certain angle, one end of each clip tongue spring 7 is pressed on the U-shaped fixing frame 5, the other end of each clip tongue spring is pressed on one end of each clip tongue 6 far away from the end hinged to the U-shaped fixing frame 5, so that the two clip tongues 6 have clamping force towards the center of the U-shaped fixing frame 5, a bare conductor 9 is clamped in a cavity formed by the two clip tongues 6 and the U-shaped fixing frame 5, a grounding wire connecting nut 10 and a clip tongue connecting conductor 8 are further arranged on the U-shaped fixing frame 5, the grounding wire connecting nut is used for pressing the grounding wire, current on the U-shaped fixing frame 5 is guaranteed to be reliably conducted to the ground, one end of each clip tongue connecting conductor 8 is connected with the U-shaped fixing frame 5, and the current can be reliably conducted to the U-shaped conductor 9 through the U-shaped fixing frame. However, the transformer substation grounding wire is often arranged at the high positions of a transformer drainage wire, a transformer sleeve, an outdoor switch, a bus bridge and the like, the grounding wire is fixed on the exposed wire in a U-shaped clamp type grounding rod mode, if the grounding rod is not hung in place or is influenced by outdoor strong wind weather, the exposed wire 9 is clamped only by the clamping tongue 6, the grounding rod has the risk of falling, and personal safety and equipment safety are seriously influenced once the grounding rod falls.

Because the currently used U-shaped clip type grounding rod has only the function of grounding short circuit and does not have the anti-falling function, the anti-falling device for the U-shaped clip type grounding rod needs to be developed urgently to prevent the U-shaped clip type grounding rod from falling, namely the bare drain wire 9 from falling off from the U-shaped clip type grounding rod, so that personal safety and equipment safety are ensured.

Disclosure of Invention

Accordingly, the present utility model is directed to a drop-proof U-shaped clip type grounding rod, which is added with a drop-proof structure based on the existing U-shaped clip type grounding rod to solve the above-mentioned technical problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the anti-falling U-shaped clip type grounding rod comprises an anti-falling structure arranged on a U-shaped fixing frame in the U-shaped clip type grounding rod and used for preventing bare wires from falling off;

the anti-drop structure includes two buckle springs and two pre-compaction pieces, one end crimping of buckle spring is in on the U type mount, buckle spring's middle part with the U type mount is articulated to link to each other, and the other end passes through pre-compaction piece is buckled and is pressed on the U type mount so that buckle spring has the pretightning force, two buckle springs follow the central line of U type mount is symmetric distribution, so that two buckle springs to the central line of U type mount presss from both sides tightly and forms anti-drop bayonet socket.

Further, the pre-pressing piece is a bolt in threaded connection with the U-shaped fixing frame.

Further, one side of the screw cap in the bolt, which is close to the U-shaped fixing frame, is a pressing surface, and the buckle spring is buckled on the U-shaped fixing frame through the pressing surface, so that the pretightening force of the buckle spring is adjusted by adjusting the distance between the pressing surface and the U-shaped fixing frame.

Further, the included angle of the bayonet of the side, close to the opening of the U-shaped fixing frame, of the anti-falling bayonet is theta 1, the included angle of the bayonet of the side, close to the closing of the U-shaped fixing frame, is theta 2, and theta 1 is smaller than theta 2.

The utility model has the beneficial effects that:

according to the anti-falling U-shaped clamp type grounding rod, an anti-falling structure is added on the basis of the existing U-shaped clamp type grounding rod, two clamping springs symmetrically distributed along the central line of the U-shaped fixing frame form anti-falling bayonets, bare wires are clamped between the anti-falling bayonets and the closed end of the U-shaped fixing frame, and the occurrence of falling accidents of the U-shaped clamp type grounding rod caused by insufficient clamping force of clamping tongues under the condition that the U-shaped clamp type grounding rod is not hung in place or is influenced by outdoor strong wind weather is prevented, so that the safety of personnel and equipment in the overhaul process is ensured; in addition, the clamping springs are buckled through the bolts, so that the pretightening force of the clamping springs is convenient to adjust, different application scenes are adapted, and the connection stability of the U-shaped clamp type grounding rod and the exposed wires is ensured.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic perspective view of an anti-falling U-shaped clip type grounding rod according to an embodiment;

FIG. 2 is a schematic view of a part of the structure of FIG. 1;

FIG. 3 is a schematic view (front view) of a part of a clip-on grounding bar with anti-drop function according to an embodiment;

FIG. 4 is a cross-sectional view of FIG. 3;

fig. 5 is a schematic partial structure view (side view) of an anti-drop U-shaped clip-type grounding bar according to an embodiment.

Reference numerals: the device comprises an insulating handle 1, an operating rod 2, a buckle spring 3, a pre-pressing piece 4, a U-shaped fixing frame 5, a clamping tongue 6, a clamping tongue spring 7, a clamping tongue connecting wire 8, a bare wire 9, a grounding wire connecting nut 10, an anti-falling bayonet 11 and a pin 12.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.

The existing U-shaped clip type grounding rod comprises an operation rod 2, a U-shaped fixing frame 5 connected to one end of the operation rod 2, two clip tongues 6 hinged in the U-shaped fixing frame 5 and two clip tongue springs 7 used for pressing the clip tongues 6, wherein the clip tongues 6 are hinged with the U-shaped fixing frame 5 through hinges, the clip tongues 6 can rotate around the hinges by a certain angle, one end of each clip tongue spring 7 is pressed and connected to the U-shaped fixing frame 5 in a pressing manner, the other end of each clip tongue spring is pressed and connected to one end of the clip tongue 6 far away from the hinge joint of the U-shaped fixing frame 5, so that the two clip tongues 6 have clamping force towards the center of the U-shaped fixing frame 5, a bare wire 9 is clamped in a cavity formed by the two clip tongues 6 and the U-shaped fixing frame 5, a grounding wire connecting nut 10 and a clip tongue connecting wire 8 are further arranged on the U-shaped fixing frame 5, the grounding wire connecting nut is used for pressing the grounding wire, current on the U-shaped fixing frame 5 is guaranteed to be reliably conducted to the ground, one end of each clip tongue connecting wire 8 is pressed and connected to one end of the clip tongue 6 far away from the U-shaped fixing frame 5, the current conducting wire is guaranteed to be conveniently connected to one end of the U-shaped fixing frame 5, and the U-shaped fixing frame 5 is conveniently used for overhauling the U-shaped fixing frame 2, and the current rod is conveniently connected to the U-shaped fixing rod is conveniently used to the U-shaped fixing rod, and the current rod is conveniently used to be connected to the current; specifically, the clamping tongue spring 7 is a coil spring, one end of the spring is pressed on the U-shaped fixing frame 5, and the other end of the spring is pressed on the clamping tongue 6. The screw axis is arranged on the U-shaped fixing frame 5, so that the clamping tongue 6 can be ensured to be pressed by a pressing force at any time.

Referring to fig. 1 to 5, an anti-falling U-shaped clip type grounding rod includes an anti-falling structure mounted on a U-shaped fixing frame 5 in the U-shaped clip type grounding rod for preventing a bare wire 9 from falling off; the anti-drop structure includes two buckle springs 3 and two pre-compaction pieces 4, one end crimping of buckle spring 3 is in on the U type mount 5, the middle part of buckle spring 3 with U type mount 5 articulates and links to each other, and the other end passes through pre-compaction piece 4 withhold on the U type mount 5 so that buckle spring 3 has the pretightning force, two buckle springs 3 follow the central line of U type mount 5 is symmetric distribution, so that two buckle springs 3 to the central line clamp of U type mount 5 forms anti-drop bayonet socket 11.

Specifically, the pre-pressing piece 4 is a bolt in threaded connection with the U-shaped fixing frame 5, one side of a nut in the bolt, which is close to the U-shaped fixing frame 5, is a pressing surface, the buckle spring 3 is buckled on the U-shaped fixing frame 5 through the pressing surface, so that the pretightening force of the buckle spring 3 is adjusted by adjusting the distance between the pressing surface and the U-shaped fixing frame 5, and the middle part of the buckle spring 3 is hinged with the U-shaped fixing frame 5 through pins 12 fixedly connected to the front side and the rear side of the U-shaped fixing frame 5, so that the buckle spring 3 rotates around the pins 12 under the action of external force, the anti-falling bayonet 11 is expanded, and the exposed wire 9 passes through the anti-falling bayonet 11; one end of the buckle spring 3, which is directly pressed and connected with the U-shaped fixing frame 5, is designed to be an opening type, so that the movement interference of the buckle spring 3 and the clamping tongue connecting wire 8 during deformation is avoided.

Preferably, the included angle of the anti-falling bayonet 11 at the side close to the opening of the U-shaped fixing frame 5 is θ1, and the included angle of the bayonet at the side close to the closing of the U-shaped fixing frame 5 is θ2, where θ1 is smaller than θ2.

The working principle of the anti-drop U-shaped clamp type grounding rod provided by the embodiment is as follows:

when the two clamp tongue springs 7 are extruded by the exposed lead wires 9, the two clamp tongues 6 rotate around the hinges respectively connected with the U-shaped fixing frame 5 in the separating direction, and meanwhile, due to the pressing force of the clamp tongue springs 7, the two clamp tongues 6 are always reliably contacted with the exposed lead wires 9 to ensure good grounding effect;

the installation screw hole of bolt (pretension piece 4) is on U type mount 5, and the bolt can twist on U type mount 5 to change the distance between bolt compression face and the U type mount 5, thereby change buckle spring 3's pretightning force, buckle spring 3 one end is fixed on U type mount 5, and one end is pressed on the bolt compression face. When the bolt is screwed, one end of the buckle spring 3 pressed on the bolt pressing surface moves together, so that the pretightening force of the buckle spring 3 is changed, and the force for locking the exposed wire 9 is changed. When the exposed wire 9 presses the two buckling springs 3, the two buckling springs 3 deform, the anti-falling bayonet 11 expands until the exposed wire 9 is separated from contact with the buckling springs 3, the buckling springs restore to the original state, and the anti-falling bayonet 11 is tightened to lock the exposed wire 9.

The anti-falling bayonet 11 is close to one side of the opening of the U-shaped fixing frame 5, an included angle formed by the two buckle springs 3 is theta 1, and is close to one side of the closing opening of the U-shaped fixing frame 5, an included angle formed by the two buckle springs 3 is theta 2, and the theta 1 is smaller than theta 2, so when the bare conductor 9 enters or leaves the buckle springs 3 just contacted, when the force exerted on the bare conductor 9 moves up and down when the bare conductor 9 moves up and down, the component force of the force exerted on the buckle springs 3 on the direction perpendicular to the inlet and outlet of the bare conductor 3 is different, the force is the force forcing the buckle springs 3 to separate, and when the bare conductor 9 moves up, the component force exerted on the buckle springs 3 by the force exerted on the bare conductor 9 on the direction perpendicular to the inlet and outlet of the bare conductor 9 is larger than the component force exerted on the buckle springs 3 on the direction perpendicular to the inlet and outlet of the bare conductor 9 when the bare conductor 9 moves down. Therefore, when the exposed wire 9 is separated from the U-shaped clamp type grounding rod, the force required by the buckling spring 3 to deform to open the anti-falling bayonet 11 is larger than the force required by the buckling spring 3 to deform when the exposed wire 9 enters the U-shaped clamp type grounding rod, so that the locking of the exposed wire 9 is well completed, and the falling of the exposed wire is prevented.

When the anti-drop U-shaped clamp type grounding rod is needed to be hung, a person holds the insulating handle 1 and pulls the anti-drop U-shaped clamp type grounding rod downwards, the exposed wire 9 firstly presses the buckle spring 3 to force the buckle spring 3 to deform, the larger the buckle spring 3 deforms along with more and more extrusion, the anti-drop bayonet 11 expands, the exposed wire 9 gradually enters the U-shaped fixing frame 5, after the exposed wire 9 is separated from the buckle spring 3, the buckle spring 3 slowly returns to the original state, and the anti-drop bayonet 11 contracts to lock the exposed wire 9. And because theta 1 is smaller than theta 2, the force required by the deformation of the buckle spring 3 when the bare wire 9 leaves is larger than the force required by the deformation of the buckle spring 3 when the bare wire 9 enters, so that the locking is better completed. When the exposed wire 9 continues to move upwards, the exposed wire 9 presses the clamp tongue 6 to force the clamp tongue spring 7 to deform, meanwhile, the clamp tongue spring 7 also enables the clamp tongue 6 to reliably contact with the exposed wire 9, current on the exposed wire 9 can reliably flow into the clamp tongue 6, and then is conducted to a ground wire through the clamp tongue connecting wire 8 and the U-shaped fixing frame 5 and finally is conducted to the ground. When the anti-falling U-shaped clip type grounding rod needs to be taken down, a person holds the insulating handle 2 and jacks up the anti-falling U-shaped clip type grounding rod upwards, at the moment, along with the upward movement of the anti-falling U-shaped clip type grounding rod, the clip tongue 6 slowly returns to the original state under the action of the clip tongue spring 7, when the anti-falling U-shaped clip type grounding rod continues to move upwards and can contact the buckle spring 3, the buckle spring 3 deforms, the force required to jack up upwards is slightly larger, when the anti-falling clip 11 is continuously jacked up, the deformation of the buckle spring 3 is enlarged, and the exposed wire 9 slides out of the buckle spring 3, so that the taking-down operation is completed.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims (4)

1. An anti-drop U type presss from both sides formula earth bar, its characterized in that: comprises an anti-falling structure arranged on a U-shaped fixing frame (5) in a U-shaped clip type grounding rod and used for preventing a bare wire (9) from falling off;

the anti-falling structure comprises two buckle springs (3) and two pre-pressing pieces (4), wherein one ends of the buckle springs (3) are in compression joint with the U-shaped fixing frame (5), the middle of the buckle springs (3) are hinged with the U-shaped fixing frame (5), the other ends of the buckle springs are buckled on the U-shaped fixing frame (5) through the pre-pressing pieces (4) so that the buckle springs (3) have pretightening force, and the two buckle springs (3) are symmetrically distributed along the central line of the U-shaped fixing frame (5), so that the two buckle springs (3) are clamped to the central line of the U-shaped fixing frame (5) to form anti-falling bayonets (11).

2. The anti-drop clevis type grounding bar of claim 1, wherein: the pre-pressing piece (4) is a bolt in threaded connection with the U-shaped fixing frame (5).

3. The anti-drop clevis type grounding bar of claim 2, wherein: one side of the screw cap in the bolt, which is close to the U-shaped fixing frame (5), is a pressing surface, and the buckle spring (3) is buckled on the U-shaped fixing frame (5) through the pressing surface, so that the pretightening force of the buckle spring (3) is adjusted by adjusting the distance between the pressing surface and the U-shaped fixing frame (5).

4. The anti-drop clevis type grounding bar of claim 1, wherein: the included angle of the bayonet of the side, close to the opening of the U-shaped fixing frame (5), of the anti-falling bayonet (11) is theta 1, the included angle of the bayonet of the side, close to the closing of the U-shaped fixing frame (5), is theta 2, and theta 1 is smaller than theta 2.