CN210053095U - Overhead conductor grounding pulley - Google Patents

Abstract

The utility model provides an overhead wire grounding pulley, which comprises a tensioning pulley, an adjusting screw, a tensioning pulley seat, a first spring, a conductive pulley block, a mounting plate, a mounting beam, a pre-tightening wheel component and a mounting frame of a portal frame structure; the pre-tightening wheel assembly comprises a pre-tightening pulley, a pre-tightening pulley seat, a pre-tightening spring, a pre-tightening screw and a pre-tightening nut; the pre-tightening screw penetrates through the mounting beam and is vertically downward, the pre-tightening screw can move in the vertical direction, the pre-tightening nut is arranged on the pre-tightening screw and is positioned above the mounting beam, the pre-tightening pulley seat is fixedly arranged at the lower end of the pre-tightening screw and is positioned below the mounting beam, the pre-tightening pulley is rotatably mounted on the pre-tightening pulley seat, the wheel surface of the pre-tightening pulley sinks to form an arc-shaped groove of an annular structure, and the size of the arc-shaped groove is the same as that of the second annular groove; the abrasion phenomenon of the conducting wire on the conducting pulley due to swinging can be effectively prevented.

Description

Overhead conductor grounding pulley

technical field

The utility model relates to an electric auxiliary tool, in particular to an overhead wire grounding pulley.

Background technique

During the laying of the overhead wire, due to the movement of the wire when the wire is paid out, under the action of the electric field near the original overhead wire, a high voltage will be induced on the wire to be erected. Therefore, a grounding pulley is required for grounding, thereby preventing work In the event of an electric shock accident, the existing grounding pulley generally adopts two conductive pulleys and one tensioning pulley. The tensioning pulley is located between the two conducting pulleys and is erected on the two conducting pulleys. During the erection process, the wires are under tension. At this time, due to the external adjustment such as wind, the wire will appear in a swinging state, then the wire at the focus point of the conductive wheel will have serious friction, which will cause the wire to wear out, and then produce Metal shavings or sharp spikes, resulting in severe corona discharge on the wire.

Therefore, in order to solve the above problems, it is urgent to propose a new technical solution.

Utility model content

In view of this, the purpose of this utility model is to provide an overhead wire pay-off pulley, which can effectively prevent the wire from being worn on the conductive pulley due to swinging, thereby effectively preventing metal chips or spikes from appearing on the wire, and avoiding the occurrence of metal chips or thorns on the wire. Corona discharge occurs due to wear and tear to ensure the safety of power supply.

The utility model provides an overhead wire pay-off pulley, which comprises a tensioning pulley, an adjusting screw, a tensioning pulley seat, a first spring, a conductive pulley block, a mounting plate, a mounting beam, a pre-tensioning wheel assembly and a gantry structure mounting frame ;

The mounting frame is fixed on the mounting beam, the mounting plate is fixed on the upper end of the mounting frame and forms a cantilever beam structure, the plate surface of the mounting plate is parallel to the mounting beam, and the adjusting screw is perpendicular to the plate of the mounting plate. through the mounting plate in a surface manner, and the adjusting screw is vertically downward, and the adjusting screw can move in the vertical direction on the mounting plate;

The tensioning pulley seat is an inverted U-shaped structure, the lower end of the adjusting screw is fixedly connected with the tensioning pulley seat, and the tensioning pulley seat is located below the mounting plate, the first spring is sleeved on the adjusting screw and the first spring between the tensioning pulley seat and the mounting plate, the tensioning pulley is rotatably mounted on the tensioning pulley seat;

There are two conductive pulley assemblies, both of which are fixedly arranged at both ends of the mounting beam, and the tensioning pulley is located between the two conductive pulley assemblies;

The conductive pulley assembly includes a conductive pulley seat and a conductive pulley, the conductive pulley seat is an inverted U-shaped structure, the conductive pulley seat is fixedly installed on the mounting beam, the conductive pulley is rotatably installed on the conductive pulley seat, the conductive pulley seat is The axes of the pulley and the tensioning pulley are parallel;

The wheel surface of the conductive pulley sinks to form a first annular groove with a U-shaped structure, the bottom of the first annular groove sinks to form a second annular groove, and the bottom of the second annular groove is an arc structure. The arc of the bottom section of the second annular groove is a minor arc;

There are two groups of the preloading assemblies, which are respectively arranged at the two ends of the mounting beam and are located outside the conductive pulley assembly. preload nut;

The pre-tightening pulley seat is an inverted U-shaped structure, the pre-tightening screw rod passes through the mounting beam and the pre-tightening screw rod is vertically downward, the pre-tightening screw rod can move in the vertical direction, and the pre-tightening nut It is arranged on the pre-tightening screw and above the mounting beam, the pre-tightening pulley seat is fixedly arranged at the lower end of the pre-tightening screw and the pre-tightening pulley seat is located under the mounting beam, and the pre-tightening pulley is rotatably mounted on the pre-tightening pulley seat , the wheel surface of the preloading pulley sinks to form an arc-shaped groove of the annular structure, the size of the arc-shaped groove is the same as that of the second annular groove, and the axis of the preloading pulley is parallel to the axis of the conductive pulley.

Further, the preload pulley is a rubber wheel.

Further, the mounting frame is provided with a slider, the slider is provided with a dovetail-shaped chute, the inner side of the mounting rack is provided with a sliding bar, and the sliding bar is conformally embedded in the dovetail-shaped chute, and the sliding The block and the tensioning pulley seat are fixedly connected through the connecting block.

Further, a ground wire connecting column is fixed on the mounting frame.

Beneficial effects of the utility model: The utility model can effectively prevent the wire from being worn on the conductive pulley due to swinging, thereby effectively preventing metal shavings or spikes from appearing on the wire, and avoiding the phenomenon of corona discharge due to wire wear. , to ensure the safety of power supply.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a left side view of FIG. 1 .

FIG. 3 is a cross-sectional view taken along the line A in FIG. 1 .

FIG. 4 is a schematic structural diagram of the conductive pulley of the present invention.

FIG. 5 is a schematic diagram of the structure of the slider of the present invention.

Detailed ways

The present utility model is further described in detail below in conjunction with the accompanying drawings:

The utility model provides an overhead wire pay-off pulley, comprising a tensioning pulley 11, an adjusting screw 13, a tensioning pulley seat 10, a first spring 14, a conductive pulley assembly, a mounting plate 15, a mounting beam 3, and a pre-tensioning wheel assembly and the mounting frame 1 of the gantry structure;

The mounting frame 1 is fixed on the mounting beam 3 , the mounting plate 15 is fixed on the upper end of the mounting frame 1 and forms a cantilever beam structure, the plate surface of the mounting plate 15 is parallel to the mounting beam 3 , and the adjusting screw 13 Passing through the mounting plate in a manner perpendicular to the surface of the mounting plate, and the adjusting screw is vertically downward, and the adjusting screw can move in a vertical direction on the mounting plate;

The tensioning pulley seat 10 is an inverted U-shaped structure, the lower end of the adjusting screw is fixedly connected with the tensioning pulley seat, and the tensioning pulley seat is located below the mounting plate, the first spring is sleeved on the adjusting screw and the first The spring is located between the tensioning pulley seat and the mounting plate, and the tensioning pulley is rotatably mounted on the tensioning pulley seat;

There are two conductive pulley assemblies, both of which are fixedly arranged at both ends of the mounting beam, and the tensioning pulley is located between the two conductive pulley assemblies;

The conductive pulley assembly includes a conductive pulley seat 9 and a conductive pulley 8, the conductive pulley seat is an inverted U-shaped structure, the conductive pulley seat is fixedly installed on the mounting beam, and the conductive pulley is rotatably installed on the conductive pulley seat, so The axes of the conductive pulley and the tensioning pulley are parallel;

The surface of the conductive pulley 8 sinks to form a first annular groove with a U-shaped structure, the bottom of the first annular groove sinks to form a second annular groove 18 , and the bottom of the second annular groove 18 is an arc structure. , the arc of the bottom section of the second annular groove is a minor arc;

There are two sets of the preloading components, which are respectively arranged on the two ends of the mounting beam and are located outside the conductive pulley components. The preloading components include a preloading pulley 7, a preloading pulley seat 6, a Tighten the screw 4 and the preload nut 12;

The pre-tightening pulley seat is an inverted U-shaped structure, the pre-tightening screw rod passes through the mounting beam and the pre-tightening screw rod is vertically downward, the pre-tightening screw rod can move in the vertical direction, and the pre-tightening nut It is arranged on the pre-tightening screw and above the mounting beam, the pre-tightening pulley seat is fixedly arranged at the lower end of the pre-tightening screw and the pre-tightening pulley seat is located under the mounting beam, and the pre-tightening pulley is rotatably mounted on the pre-tightening pulley seat , the wheel surface of the preloading pulley 7 sinks to form an arc-shaped groove 71 of annular structure, the size of the arc-shaped groove is the same as that of the second annular groove, and the axis of the preloading pulley is parallel to the axis of the conductive pulley ; Among them, the radius of the inferior arc of the second annular groove is the same as the radius of the overhead conductor, that is to say: different voltage levels, the radius of the overhead conductor is not the same, therefore, assuming different overhead conductors, use different grounding pulleys , that is to say: corresponding to different overhead wires, the radius of the second annular groove of the conductive pulley is also different, but it is the same as the radius of the overhead wire to be erected, so that the wire can be fully contacted with the second annular groove to ensure electrical conductivity. The conductive performance between the pulley and the wire ensures the safety of grounding; the arc groove of the preload pulley is the same as the opening size of the second annular groove of the conductive pulley, thus ensuring the bonding between the wire and the preload pulley. The swinging arc of the wire is reduced. Preferably, the preload pulley adopts a rubber wheel made of rubber material, so as to prevent the wire from being worn. Through the above structure, due to the action of the preload assembly, the original focus point on the conductive pulley is transferred to the preload. On the pulley, and due to the adjustment effect of the preload spring of the preload component, it can effectively reduce the wire wear caused by the wire swing caused by external conditions, so as to effectively prevent metal chips or spikes on the wire. The corona discharge phenomenon occurs to ensure the safety of power supply. In order to further prevent the overhead wire from swinging and rubbing, the tension pulley has the same structure as the conductive pulley.

In this embodiment, the mounting frame is provided with a sliding block 2, the sliding block 2 is provided with a dovetail-shaped chute 20, the inner side of the mounting frame 1 is provided with a sliding bar 19, and the sliding bar 19 is conformally embedded in the In the dovetail-shaped chute 20, the sliding block 2 and the tensioning pulley seat 10 are fixedly connected through the connecting block 16. Through this structure, the adjusting screw can only move along its axis, thereby preventing the tensioning during the travel of the wire. Radial swing occurs at the pulley, thereby further preventing wire wear, wherein the inner side in the above refers to the left and right opposite sides of the mounting bracket shown in FIG. 1 .

In this embodiment, a grounding wire connecting column 17 is fixedly arranged on the mounting frame, wherein the grounding wire is grounded through the existing grounding equipment, thereby preventing the wire from being electrified and posing a potential safety hazard.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should The technical solutions are modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and all of them should be included in the scope of the claims of the present invention.

Claims (4)

1. The utility model provides an overhead wire ground connection coaster which characterized in that: the device comprises a tensioning pulley, an adjusting screw, a tensioning pulley seat, a first spring, a conductive pulley block, a mounting plate, a mounting beam, a pre-tightening wheel assembly and a mounting frame of a portal frame structure;

the mounting frame is fixedly arranged on the mounting beam, the mounting plate is fixedly arranged at the upper end of the mounting frame and forms a cantilever beam structure, the surface of the mounting plate is parallel to the mounting beam, the adjusting screw penetrates through the mounting plate in a mode of being perpendicular to the surface of the mounting plate and vertically faces downwards, and the adjusting screw can move on the mounting plate along the vertical direction;

the tensioning pulley seat is of an inverted U-shaped structure, the lower end of the adjusting screw is fixedly connected with the tensioning pulley seat, the tensioning pulley seat is positioned below the mounting plate, the first spring is sleeved outside the adjusting screw and positioned between the tensioning pulley seat and the mounting plate, and the tensioning pulley is rotatably mounted on the tensioning pulley seat;

the two conductive pulley assemblies are fixedly arranged at two ends of the mounting beam, and the tensioning pulley is positioned between the two conductive pulley assemblies;

the conductive pulley assembly comprises a conductive pulley seat and a conductive pulley, the conductive pulley seat is of an inverted U-shaped structure, the conductive pulley seat is fixedly arranged on the mounting beam, the conductive pulley is rotatably arranged on the conductive pulley seat, and the axes of the conductive pulley and the tensioning pulley are parallel;

the pulley surface of the conductive pulley sinks to form a first annular groove with a U-shaped structure, the bottom of the first annular groove sinks to form a second annular groove, the bottom of the second annular groove is of an arc surface structure, and an arc line of the bottom section of the second annular groove is a minor arc;

the two groups of pre-tightening wheel assemblies are respectively arranged at the end parts of the two ends of the mounting beam and are positioned on the outer sides of the conductive pulley assemblies, and each pre-tightening wheel assembly comprises a pre-tightening pulley, a pre-tightening pulley seat, a pre-tightening spring, a pre-tightening screw and a pre-tightening nut;

the pre-tightening pulley seat is of an inverted U-shaped structure, the pre-tightening screw penetrates through the mounting beam and the pre-tightening screw vertically downwards, the pre-tightening screw can move in the vertical direction, the pre-tightening screw cap is arranged above the pre-tightening screw and located on the mounting beam, the pre-tightening pulley seat is fixedly arranged at the lower end of the pre-tightening screw and below the pre-tightening pulley seat located on the mounting beam, the pre-tightening pulley is rotatably arranged on the pre-tightening pulley seat, the wheel surface of the pre-tightening pulley sinks to form an arc-shaped groove of an annular structure, the size of the arc-shaped groove is the same as that of the second annular groove, and the axis of the pre-tightening pulley.

2. The overhead conductor grounding trolley of claim 1, wherein: the pre-tightening pulley is a rubber wheel.

3. The overhead conductor grounding trolley of claim 1, wherein: the mounting bracket is provided with a sliding block, the sliding block is provided with a dovetail-shaped sliding groove, a sliding strip is arranged on the inner side of the mounting bracket and is embedded into the dovetail-shaped sliding groove in a shape fitting mode, and the sliding block is fixedly connected with the tensioning pulley seat through a connecting block.

4. The overhead conductor grounding trolley of claim 1, wherein: and the mounting frame is fixedly provided with a grounding wire connecting column.

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