CN218958405U - Power transmission line paying-off grounding trolley with grounding device - Google Patents

Abstract

The utility model discloses a power transmission line paying-off grounding pulley with a grounding device, which comprises a pulley group formed by wire wheels and wire rope pulleys and a main frame body for installing the pulley group, wherein the pulley group is symmetrically distributed and arranged at two sides of the main frame body, each side is provided with two pulley groups, each pulley group at each side is axially installed at two ends of a lateral guard plate, the middle part of the lateral guard plate is also provided with a conductive pulley group transversely arranged between the two pulley groups, and one end of the conductive pulley group is connected with a grounding wire. The high-efficiency paying-off operation can be stabilized, the induced electricity can be grounded and guided, the occurrence of electric arcs is prevented, and the usability and the safety are improved.

Description

Power transmission line paying-off grounding trolley with grounding device

Technical Field

The utility model relates to the technical field of special equipment in the power transmission and transformation industry, mainly relates to a necessary tool for tension paying-off construction of a high-voltage overhead power transmission line, and in particular relates to a power transmission line paying-off grounding pulley with a grounding device.

Background

The paying-off pulley is a necessary tool for tension paying-off construction of the high-voltage overhead transmission line. In the tension paying-off process, firstly, proper paying-off pulleys are selected according to the parameters of the section size and the weight of a wire to be paid-off, the distance between the base towers in a construction line segment, the height difference and the like, then 1-2 paying-off pulleys are hung on each base tower according to the turning angle between the towers, and a traction machine is used for dragging a guide rope and then pulling the traction rope connected with the wire through a walking plate, so that the wire sequentially passes through each paying-off pulley, and the wire is paid-off on each base tower in the construction line segment. Therefore, the paying-off pulley provides a supporting and paying-off channel for the wire, and plays an important role in protecting the wire and improving paying-off construction efficiency.

The traditional paying-off tackle widely used at present can be divided into a single-wheel paying-off tackle, a three-wheel paying-off tackle, a five-wheel paying-off tackle, a seven-wheel paying-off tackle and a nine-wheel paying-off tackle according to the number of pulleys, and can meet the requirements of one-time paying-off of single wires, double split wires, four split wires, six split wires and eight split wires. For paying-off pulleys above a single wheel, such as paying-off pulleys with three wheels, five wheels and the like, the middle pulley is a steel wire rope wheel and is used for passing through a guide rope and a traction rope, and pulleys symmetrically arranged on two sides are wire guide wheels and are used for passing through wires, namely for paying-off pulleys with the single wheel, the guide rope, the traction rope and the wires pass through the single wheel. The pulley is hung on the transmission tower or directly hung on the insulator string.

When carrying high-voltage cable, when the wire was walked around the pulley, because the friction of wire and the pulley of exhibition and putting can produce induced current on the wire, constructor can suffer from stronger induced current to knock down on the wire because when the deliberate contact wire in a moment, falls off from the high tower, has life danger. In addition, the excessive induced current can generate an induced arc, and the arc can easily burn electrical equipment, thereby causing property loss and even life safety. How to effectively and completely remove the generated induced electricity is a current industry problem.

Disclosure of Invention

In order to solve the defects in the prior art, the inventor provides an improved paying-off grounding pulley through research and development, which not only can stabilize efficient paying-off operation, but also can fold and store the paying-off grounding pulley in the transportation and storage processes, is convenient to transport and store, and can conduct grounding guidance on induced electricity, prevents the occurrence of electric arcs, and improves usability and safety.

Specifically, the utility model is realized as follows: the utility model provides a transmission line unwrapping wire ground connection coaster with earthing device, includes the wheelset that wire wheel and wire rope sheave constitute, is used for installing the body frame body of wheelset, the wheelset is the symmetrical distribution arrange in body frame body both sides in, and each side all is provided with two sets of wheelsets, and the equal shaft type of wheelset of each side is installed in the both ends department of side direction backplate, still be provided with a conductive wheelset transversely arranging between two sets of wheelsets on the middle part of side direction backplate, conductive wheelset's one end is connected with the earth connection wire.

Further, the middle part of side direction backplate is articulated with the lower extreme of drawing the roof beam and the outer end connection of bracing piece to one side, the inner end connection of bracing piece is in the middle part of body frame, the upper end connection of drawing the roof beam to one side is on the upper portion fixed ear of body frame.

Further, the tail end of the limiting bolt is hung with metal chains, and the metal chains of all the limiting bolts on each side are converged and connected to the grounding wire.

Furthermore, both ends of the wheel shaft of the wheel set are arranged on locking blocks, and the locking blocks are fixedly arranged on the end parts of the lateral guard plates in a detachable mounting mode.

Further, two ends of a conductive wheel shaft of the conductive wheel set are arranged on a conductive wheel shaft cap, the conductive wheel shaft cap is arranged at the middle part of the lateral guard plate through an elastic piece, and the conductive wheel set is propped upwards under the compression force of the elastic piece.

Further, the wheel axle cap comprises mounting plates at the left side and the right side, the left side and the right side of the mounting plates are respectively fixedly mounted on the double-screw fixing seat through guide screws, and compression springs are sleeved on the guide screws and are placed between the mounting plates and the double-screw fixing seat in a compressed state.

Further, the main frame body comprises two main rods which are symmetrically arranged, the wheel sets are arranged between the main rods, a triangular plate is arranged between the tops of the main rods, and hanging holes are formed in the triangular plate.

Further, a grounding wire nose is arranged on the outer side face of the fixed lug, one end of the grounding wire is connected with the end portion of the conductive wheel shaft of the conductive wheel set, the other end of the grounding wire is connected to the grounding wire nose, and the grounding wire nose is connected with the grounding wire.

Further, the number of the conductive wheels on the conductive wheel set is the same as that of the wheel sheets on the conductive wheel set, and the arranged direction positions are consistent, so that the same conductive wire can pass through.

The working principle and beneficial effects of the utility model are introduced: the wheel sets are symmetrically designed, each side of the wheel set is provided with two groups, the conductive wheel sets are arranged between the two groups and made of metal conductive materials, the conductive wheel sets are contacted with cables passing through, once induced current is generated, the conductive wheel sets can be transmitted to a grounding wire to be finally grounded, induced electricity is eliminated, the conductive wheel sets are arranged below the cables in use, the cables pass above the cables, in order to ensure that the conductive wheel sets can be contacted with each cable, elastic pieces are arranged at two ends of the conductive wheel sets to prop up and support the conductive wheel sets and contact the cables, but compared with the conductive wheel sets, when the cables are connected with each other in a hard mode, the elastic pieces can compress and yield the cables, damage to the cables is avoided, and the functions of stabilizing and safety and effectively releasing the induced electricity when the cables are contacted with the cables are achieved. The utility model supports the wire by using the triaxial pulley, thereby reducing the enveloping angle, further reducing the bending radius of the wire on the pulley, preventing the damage of the internal structure of the wire and ensuring the quality of the wire after wire erection. And a good conductor rolling shaft is added on the paying-off pulley, so that induced electricity on the wire in the paying-off process is fully unloaded, and burn, strand breakage and even wire breakage accidents caused by the induced electricity of the wire are avoided. The induced electricity is effectively unloaded, and the induced electricity injury is stopped, so that the safety of constructors is fundamentally ensured. The utility model has scientific and reasonable integral structure, can improve the stability and safety in the process of conveying the cable, and has the characteristics of easy use and storage property due to the self structure. Has wide market prospect and market demand.

Drawings

FIG. 1 is a front elevational view of the structure of the present utility model;

FIG. 2 is a top plan view of the structure of the present utility model;

FIG. 3 is a perspective view of the structure of the present utility model;

fig. 4 is a perspective view of a wheel set structure of the paying-off and grounding pulley of the power transmission line with the grounding device;

fig. 5 is a schematic view of a grounding circuit structure of a pay-off grounding block of a power transmission line with a grounding device according to the present utility model;

fig. 6 is a perspective view of the grounding circuit structure of the line paying-off grounding block with grounding device of the present utility model;

wherein: the wire rope pulley 1, the wire pulley 2, the main frame 3, the lateral guard plate 4, the conductive wheel group 5, the grounding wire 6, the oblique pull beam 31, the supporting rod 32, the fixing lug 33, the limiting bolt 34, the metal chain 7, the locking block 35, the conductive wheel axle cap 36, the conductive wheel axle 37, the mounting plate 38, the guiding screw 381, the double screw fixing seat 382, the compression spring 383, the main rod 310, the triangular plate 311, the hanging hole 312, the grounding wire nose 8 and the conductive wheel sheet 21.

Detailed Description

The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

Example 1: the utility model provides a transmission line unwrapping wire ground connection coaster with earthing device, includes the wheelset that wire wheel 2 and wire rope sheave 1 constitute, is used for installing the body frame body 3 of wheelset, the wheelset is the symmetrical arrangement arrange in body frame body 3 both sides in, and each side all is provided with two sets of wheelsets, and the equal shaft type of wheelset of each side is installed in the both ends department of side direction backplate 4, still be provided with a conductive wheelset 5 transversely arranging in between two sets of wheelsets on the middle part of side direction backplate 4, conductive wheelset 5's one end is connected with earthing wire 6. When in actual use, the main frame body 3 is used as a supporting and mounting main body, the wheel sets are mounted at two sides of the main frame body 3, the whole is in a symmetrical distribution structure, the wire wheels 2 are arranged in the middle, the two sides are provided with equal numbers of steel wire rope wheels 1, a group of wheel sets are coaxially formed, two ends of the lateral guard plate 4 are respectively provided with a group of wheel sets, symmetrical balance is realized, the conductive wheel sets 5 are arranged between the two groups of wheel sets and are made of metal conductive materials, the metal conductive materials are contacted with cables passing through, once induced current is generated, the conductive wheel sets 5 can be transmitted to the grounding wire 6 to be finally grounded, induced electricity is eliminated, the conductive wheel sets 5 are arranged below the cables in use, the cables pass above the conductive wheel sets, in order to ensure that the conductive wheel sets can be contacted with each cable, the two ends of the conductive wheel sets 5 are provided with elastic pieces to prop up and support the cables, but are in hard connection compared, when the downward pressure of the cables is overlarge, the elastic pieces can compress the cables to avoid damaging the cables, and the functions of stable and safe release the induced electricity can be effectively contacted with the cables.

Preferably, a stable triangular support structure is formed between the cable-stayed beam 31, the support rod 32 and the main frame body 3, so that stress support can be provided for bearing support of the whole wheel set, the tail ends of the limiting bolts 34 are hung with metal chains 7, and the metal chains 7 of all the limiting bolts 34 on each side are converged and connected to the grounding wire 6. The limiting bolt 34 is arranged on the inclined pull beam 31, so that induced electricity possibly generated on the inclined pull beam 31 or the main frame body 3 can be rapidly released, and timeliness and effectiveness of the induced electricity release are further improved; the occurrence of arcing is eliminated.

Preferably, both ends of the wheel axle of the wheel set are mounted on locking blocks 35, and the locking blocks 35 are fixedly mounted on the end parts of the lateral guard plates 4 in a detachable mounting manner. Such a structure facilitates routine maintenance operations.

Preferably, two ends of the conductive wheel axle 37 of the conductive wheel set 5 are mounted on the conductive wheel axle cap 36, the conductive wheel axle cap 36 is mounted on the middle part of the lateral guard plate 4 through an elastic member, and the conductive wheel set 5 is propped up under the compression force of the elastic member. The wheel axle cap comprises a mounting plate 38 on the left and right sides, wherein the left and right sides of the mounting plate 38 are respectively fixedly mounted on a double-screw fixing seat 382 through a guide screw 381, and a compression spring 383 is sleeved on the guide screw 381 in a compressed state and is arranged between the mounting plate 38 and the double-screw fixing seat 382. The compression spring 383 can stretch out and draw back on the lead screw 381, the end of the lead screw 381 is provided with threads for being installed on the double screw fixing seat 382, on one hand, the installation plate 38 is installed on the double screw fixing seat 382, on the other hand, a movable area of the installation plate 38 is provided, the compression spring 383 keeps tension in a normal state and supports the installation plate 38, so that the conductive wheel shaft 37, namely the conductive wheel set 5, is upwards supported, the conductive wheel shaft can be contacted with a cable, idle running, non-contact and other conditions are prevented, the direction of the cable is changed under special conditions, and the compression spring 383 can be continuously compressed when the conductive wheel shaft 37 is pressed, so that a displacement space is reserved, and a paying-off process is more stable and safe.

Specifically, the main frame body 3 includes two main bars 310 symmetrically arranged, the wheel set is installed between the main bars 310, a triangle 311 is installed between the tops of the main bars 310, and a hanging hole 312 is arranged on the triangle 311. And the installation part is used for installing the rear suspension.

The outer side surface of the fixed lug 33 is provided with a grounding wire nose 8, one end of the grounding wire 6 is connected with the end part of the conductive wheel shaft 37 of the conductive wheel set 5, the other end of the grounding wire is connected to the grounding wire nose 8, and the grounding wire nose 8 is connected with a grounding wire. By the structure, the grounding wires 6 can be collected in the middle of the main frame body 3 in a unified manner, and then led to the ground through the grounding wires, so that the grounding wires 6 have the functions of stress constraint and standard trend, and the excessive grounding wires 6 are prevented from swaying in order to prevent accidents such as entanglement.

It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.

Claims (9)

1. The utility model provides a transmission line unwrapping wire ground connection coaster with earthing device, includes wheelset, main frame body (3) that are used for installing the wheelset that wire wheel (2) and wire rope sheave (1) constitute, its characterized in that, the wheelset is symmetrical arrangement arranges main frame body (3) both sides in, and each side all is provided with two sets of wheelsets, and the wheelset of each side is the equal axle type and installs the both ends department at side direction backplate (4), still be provided with a conductive wheelset (5) between two sets of wheelsets transversely on the middle part of side backplate (4), the one end and the earth connection wire (6) of conductive wheelset (5) are connected.

2. The power transmission line paying-off grounding pulley with a grounding device according to claim 1, characterized in that the middle part of the side guard plate (4) is hinged with the lower end part of the cable-stayed beam (31) and the outer end part of the supporting rod (32), the inner end part of the supporting rod (32) is connected with the middle part of the main frame body (3), and the upper end part of the cable-stayed beam (31) is connected with the upper fixing lug (33) of the main frame body (3).

3. The line paying-off grounding block with grounding device according to claim 2, characterized in that the tail end of the limiting bolt (34) is hung with a metal chain (7), and the metal chains (7) of all limiting bolts (34) on each side are gathered and connected to the grounding wire (6).

4. The line paying-off grounding block with grounding device according to claim 1, wherein both ends of the wheel axle of the wheel set are mounted on locking blocks (35), and the locking blocks (35) are fixedly mounted on the end parts of the lateral guard plates (4) in a detachable mounting manner.

5. The power transmission line paying-off grounding pulley with a grounding device according to claim 2, wherein two ends of a conductive wheel shaft (37) of the conductive wheel set (5) are mounted on a conductive wheel shaft cap (36), the conductive wheel shaft cap (36) is mounted on the middle part of the lateral guard plate (4) through an elastic piece, and the conductive wheel set (5) is propped up under the compression force of the elastic piece.

6. The line pay-off grounding block with grounding device according to claim 5, wherein the wheel axle cap comprises mounting plates (38) on the left and right sides, the left and right sides of the mounting plates (38) are fixedly mounted on the double-screw fixing seat (382) through guide screws (381), and the compression springs (383) are sleeved on the guide screws (381) and placed between the mounting plates (38) and the double-screw fixing seat (382) in a compressed state.

7. The power transmission line paying-off and grounding pulley with a grounding device according to claim 1, characterized in that the main frame body (3) comprises two main rods (310) which are symmetrically arranged, the wheel set is arranged between the main rods (310), a triangular plate (311) is arranged between the tops of the main rods (310), and a hanging hole (312) is formed in the triangular plate (311).

8. The line paying-off grounding block with grounding device according to claim 5, characterized in that a grounding wire nose (8) is arranged on the outer side surface of the fixed lug (33), one end of the grounding wire (6) is connected to the end part of the conductive wheel axle (37) of the conductive wheel set (5), the other end is connected to the grounding wire nose (8), and the grounding wire nose (8) is connected with the grounding wire.

9. The power transmission line paying-off and grounding pulley with a grounding device according to claim 1, wherein the number of the conductive wheels on the conductive wheel set (5) is the same as the number of the wheel sheets (21) on the wire guide wheel (2), and the positions of the conductive wheels are consistent, so that the same wire can pass through.

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