CN109066552B - A transmission line protection device - Google Patents

Abstract

The invention belongs to the field of auxiliary equipment of a power distribution network, and particularly relates to a power transmission line protection device. Through utilizing power component to obtain drive power, the drive rack downstream makes power transmission line and adjusting part's contact point move down, and then makes the rate of tension of power transmission line improve, and wind-force is stronger, and the gear moving distance that moves down is bigger, and the rate of tension of power transmission line is higher, and then makes the pretightning force of power transmission line strengthen along with the reinforcing of wind-force size, and after the pretightning force improved, the ability that the power transmission line resisted the deformation was improved.

Description

A transmission line protection device

technical field

The invention belongs to the field of auxiliary equipment of power distribution network, in particular to a protection device for transmission lines.

Background technique

The transmission line of the distribution network now realizes power transmission by erecting poles and connecting transmission lines between the poles. Because the transmission lines are heavy and contain high-voltage electricity, a large number of poles are required to support and suspend them. Usually, , the transmission line between the two poles needs to apply a certain pre-tightening force while tensioning, but it cannot be pulled too tightly. On the one hand, it prevents the structure from being damaged due to excessive stress. Expansion and contraction provide deformation allowance. During the use of power transmission lines, strong convective weather is often encountered, and the airflow acting on the long power transmission cables will generate a strong pulling force. Under the action, it may cause the transmission line to be blown and stretched. At the same time, the farther the distance between the poles, the greater the degree of deformation of the transmission line between the poles. Due to the fact that the force, preload and deformation of each transmission line are not complete. In the same way, the deformed transmission lines may be close to each other, resulting in short circuit, wire entanglement, etc., which will bring hidden dangers to the normal operation of the power grid and the stability of the structure.

SUMMARY OF THE INVENTION

The purpose of the invention is to provide a transmission line protection device, so that when it is said that you are under the action of strong wind, the pre-tightening force on the transmission line can be increased, and the pre-tightening force on the transmission line can be automatically adjusted according to the magnitude of the wind force, so as to prevent the transmission line and poles. The power lines are stretched closer to each other.

To achieve the above purpose, the present invention adopts the following technical solutions.

A transmission line protection device, comprising a power component, a transmission component and a plurality of adjustment components;

The power assembly includes a hollow connecting seat, and the lower end of the connecting seat is provided with a vertically downward power rod; it also includes a plurality of air receiving bowls, which are bowl-shaped structures and are arranged around the connecting seat in an annular array. It includes a connecting rod, and the connecting seat and the air receiving bowl are connected by a connecting rod; the transmission assembly includes a vertically arranged transmission rod, the transmission rod and the power rod are coaxially opposite, and the upper end of the transmission rod and the lower end of the power rod are connected to make the transmission rod follow the power The rod rotates together; it also includes a hollow fixed seat, the top of the fixed seat is provided with a first installation hole, and the transmission rod is inserted into the fixed seat from the first installation hole; a turbine worm group is arranged inside the fixed seat, and the worm in the turbine and worm group is arranged along its The axis is provided with a worm hole, and the lower end of the transmission rod is inserted into the worm hole to connect with the worm; the worm is arranged vertically, the turbine axis is arranged horizontally, a shaft hole is arranged at the turbine axis, and a transmission shaft is arranged in the shaft hole, and the transmission shaft rotates synchronously with the turbine; The adjustment assembly includes a hollow adjustment seat, a rack and pinion group is arranged in the adjustment seat, the gear is sleeved on the transmission shaft and rotates synchronously with the transmission shaft, the adjustment seat is provided with a second installation hole for the transmission shaft to pass through, and the gear The racks are arranged vertically; the racks are provided with guide bars distributed along the vertical direction, and the adjustment seat is correspondingly provided with guide grooves distributed along the vertical direction, and the guide bars slide along the guide grooves so that the racks can move along the vertical direction. The lower end of the rack is provided with a sliding hole; it also includes a runner and a connection point set on the pole, the runner and the connection point are respectively set on the front and rear sides of the rack, and the transmission line is bypassed on the runner and then passed from the sliding hole. Pass through connection to connection point.

A further optimization is that the fixing seat and the adjusting seat are provided with fixing holes so that they can be fixed on the power grid infrastructure.

Further optimization is that the lower end of the rack is an inverted U-shaped structure, two rollers are arranged in the vertical direction between the two arms of the inverted U-shaped structure, and the sliding hole is surrounded by the two rollers and the two arms of the inverted U-shaped structure. , the grid transmission line is set between the two rollers. In the process of use, it is necessary to control the transmission line through the sliding hole. In order to prevent the transmission line from being worn during repeated use, the sliding hole is set to be composed of two rollers and two arms, and rolling is used instead of sliding to reduce friction and reduce power transmission. Wire wear, improve the smoothness of the action.

A further optimization is that it also includes a fixing bolt, the fixing bolt includes a section of threaded column, the connecting seat is provided with a first threaded hole at the corresponding position of the lower end of the transmission rod, the threaded column is screwed into the first threaded hole, and the upper end of the fixing bolt is provided with a rotating column , the lowermost end of the transmission rod is provided with a rotating hole, the rotating column is inserted into the rotating hole, an adjusting ring is arranged between the fixing bolt and the connecting seat, the upper end face of the adjusting ring is against the lower end face of the worm, and the lower end face of the adjusting ring is against the connection The lower surface of the inner cavity of the seat; the outer end surface of the connection seat is provided with a reinforcement cylinder around the connection hole, and the transmission rod passes through the reinforcement cylinder and extends into the interior of the connection seat; the part of the transmission rod located inside the connection seat is provided with a shaft shoulder, the shaft shoulder The upper end face of the shaft is against the upper face of the inner cavity of the connecting seat, and the lower end face of the shaft shoulder is against the upper end face of the worm. The reinforcing cylinder is set to keep the transmission rod in the vertical direction, which improves the strength of the transmission rod and prevents breakage. The adjustment ring can be used to adjust the upper and lower positions of the worm, which is convenient for the correction and maintenance of the worm gear and worm group. The fixing bolt structure is set to facilitate the disassembly and maintenance of the worm gear and worm. .

A further optimization is that the upper and lower ends of the adjustment seat are provided with openings for the rack to pass through; the side of the adjustment seat facing away from the connection seat is provided with a third installation hole, and an end cover is arranged in the third installation hole, and the end cover faces the adjustment seat. One side of the inner cavity is provided with a ring-shaped positioning ring extending toward the gear, and a positioning groove is correspondingly provided on the gear. The positioning ring and the positioning groove are used to keep the gear in a relatively fixed position in the adjustment seat, so that the rack and pinion can move stably, and the structural complexity is reduced.

A further optimization is that the transmission shaft is connected with the turbine wheel through a metal key and rotates synchronously. Both the turbine wheel and the transmission shaft are provided with a keyway for installing the metal key. Slide along the drive shaft. Set to a slidable structure, it is convenient to adjust the relative installation position of the connection seat and the fixed seat according to the needs during the installation process, and use the cross arm on the pole or other suitable installation positions for installation to improve adaptability and prevent Structure blocked and rendered unusable.

A further optimization is that the fixed seat is composed of a boxed structure with an opening on one side and a cover covering the opening. An annular bearing platform is respectively provided on the inner end face of the cover and the surface opposite to the cover on the inner wall of the fixed seat. Rolling bearings are arranged in each bearing stand. The provision of rolling bearings is beneficial to reduce the friction between the transmission shaft and the fixed seat, improve the transmission efficiency of the transmission shaft, and improve the smoothness of the device in use.

Its beneficial effects are:

A transmission line protection device of the present invention can move the contact point between the transmission line and the adjustment component downward by using the power component to obtain the driving force and drive the rack to move downward when a strong wind occurs in an instant, thereby making the transmission line's contact point move down. The higher the tension, the stronger the wind, the greater the downward moving distance of the gear, and the higher the tension of the transmission line, so that the pre-tightening force of the transmission line increases with the increase of the wind power. The ability of the transmission line to resist deformation is improved, which can avoid excessive deformation of the transmission line between the poles and short circuit caused by displacement, which is equivalent to "transferring" the original deformation of the transmission line between the two poles to the teeth. The power transmission line is pushed and deformed under the strip, and the device can adjust itself adaptively according to the size of the wind. After the strong wind disappears, it can restore the original state, and can effectively protect the transmission line in the strong wind. The structure of the device is simple, and the installation and maintenance costs are low. It can improve the stability of the power grid in areas with frequent strong wind environments, and has application prospects.

Description of drawings

Fig. 1 is the structural representation of the transmission line protection device of the present invention;

Fig. 2 is the internal structure schematic diagram 1 of the transmission assembly of the transmission line protection device of the present invention

Fig. 3 is the internal structure schematic diagram II of the transmission assembly of the transmission line protection device of the present invention

Fig. 4 is the schematic diagram of the internal structure of the transmission line protection device part of the present invention;

5 is a schematic structural diagram of the power transmission line protection device adjustment assembly of the present invention;

6 is a schematic diagram of the internal structure of the power transmission line protection device adjustment assembly of the present invention;

FIG. 7 is a schematic diagram of the principle of the power transmission line protection device of the present invention.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments.

As shown in FIG. 1, a power transmission line protection device of the present invention includes a power assembly, a transmission assembly and a plurality of adjustment assemblies; wherein the power assembly is used to obtain power from the wind by using a force bearing bowl during use, and according to the The wind strength generates torques of different sizes, and the torque is converted into the force of the rack 3c in the adjustment component on the transmission line 9e through the transmission component, and then the force of different magnitudes is generated on the transmission line 9e according to the wind strength, and according to this principle, an adaptive force is formed. adjustment plan.

As shown in FIGS. 1 and 4 , the power assembly includes a hollow connecting seat 1a, and the lower end of the connecting seat 1a is provided with a vertically downward power rod 1b; it also includes a plurality of air receiving bowls 1c, and the air receiving bowls 1c are bowls It is arranged around the connecting seat 1a in an annular array, and also includes a connecting rod 1d. The connecting seat 1a and the air receiving bowl 1c are connected by the connecting rod 1d; The function of the air receiver is converted into the rotary motion of the connecting seat and the power rod, and the rotary motion is transmitted to the transmission component through the power rod. The arrayed air receiving bowls can achieve uniform force, reduce the unbalanced torque received by the power components, and improve the structural stability. sex.

As shown in Figures 2 and 4, the transmission assembly includes a vertically arranged transmission rod 2a, the transmission rod 2a and the power rod 1b are coaxially opposite, and the upper end of the transmission rod 2a and the lower end of the power rod 1b are connected so that the transmission rod 2a follows the power rod 1b rotates together, wherein according to different structures and different needs, the connection mode of the transmission rod and the power rod can be fixed connection or movable connection. In this embodiment, in order to facilitate the use of different power components (so as to change the The rotating rod and the power rod are connected by a connecting groove 9a, and a connecting groove 9a and a connecting bar 9b are respectively provided at the contact ends of the power rod and the transmission rod, so as to facilitate rapid connection or disassembly.

As shown in Figures 2 and 3, the transmission assembly further includes a hollow fixed seat 2b, the top of the fixed seat 2b is provided with a first installation hole 2c, and the transmission rod 2a is inserted into the fixed seat 2b from the first installation hole 2c; the fixed seat 2b There is a turbine worm group inside, the worm 2d in the turbine worm group is provided with a worm hole along its axis, and the lower end of the transmission rod 2a is inserted into the worm hole to connect with the worm 2d; the worm 2d is arranged vertically, the axis of the turbine 2e is arranged horizontally, and the axis of the turbine 2e There is a shaft hole in the shaft hole, and a transmission shaft 2f is arranged in the shaft hole, and the transmission shaft 2f rotates synchronously with the turbine 2e; the fixed seat 2b is composed of a boxed structure with an opening on one side and a cover 2m covering the opening, and the inner side of the cover 2m is composed of An annular bearing platform 2n is respectively provided on the end face of the fixed seat 2b and the inner wall of the fixed seat 2b opposite to the cover 2m, and rolling bearings 2p are arranged in the two bearing platforms 2n. The provision of the rolling bearing 2p is beneficial to reduce the friction between the transmission shaft 2f and the fixed seat 2b, improve the transmission efficiency of the transmission shaft 2f, and improve the smoothness of the device in use.

As shown in FIG. 3, it also includes a fixing bolt 2g. The fixing bolt 2g includes a section of threaded column. The connecting seat 1a is provided with a first threaded hole at the corresponding position of the lower end of the transmission rod 2a, and the threaded column is screwed into the first threaded hole. The fixing bolt 2g The upper end is provided with a rotating column 2i, the lowermost end of the transmission rod 2a is provided with a rotating hole, the rotating column 2i is inserted into the rotating hole, an adjusting ring 2h is provided between the fixing bolt 2g and the connecting seat 1a, and the upper end surface of the adjusting ring 2h is against The lower end face of the worm 2d and the lower end face of the adjusting ring 2h abut against the lower surface of the inner cavity of the connecting seat 1a; the outer end face of the fixing seat 2a is provided with a reinforcement cylinder 2j around the first mounting hole 2c, and the transmission rod 2a is formed by the reinforcement cylinder 2j. Pass through and extend into the interior of the connecting seat 1a; the part of the transmission rod 2a located inside the connecting seat 1a is provided with a shaft shoulder, the upper end face of the shaft shoulder is against the upper surface of the inner cavity of the connecting seat 1a, and the lower end face of the shaft shoulder is against the worm 2d the upper end face. The reinforcement cylinder 2j is provided to keep the transmission rod 2a in the vertical direction, which improves the strength of the transmission rod 2a and prevents breakage. The adjustment ring 2h can be used to adjust the upper and lower positions of the worm 2d, which is convenient for the correction and maintenance of the turbine and worm group. The structure of setting the fixing bolt 2g is convenient Disassembly and maintenance of the turbine worm group.

Further, the transmission shaft 2f is connected with the turbine 2e through a metal key 2k and rotates synchronously. The turbine 2e and the transmission shaft 2f are both provided with a keyway 21 for installing the metal key 2k, wherein the keyway 2l on the transmission shaft 2f is along the shaft body. The side extends so that the connecting seat 1a can slide along the transmission shaft 2f. Set to a slidable structure, it is convenient to adjust the relative installation positions of the connecting seat 1a and the fixing seat 2b according to the needs during the installation process, and use the cross arm on the pole or other suitable installation positions for installation to improve adaptability. , to prevent the structure from being blocked and unusable.

As shown in Figures 5 and 6, the adjustment assembly includes a hollow adjustment seat 3a, and a rack and pinion set is arranged in the adjustment seat 3a, wherein the gear 3b is sleeved on the transmission shaft 2f and rotates synchronously with the transmission shaft 2f, and the adjustment seat 3a There is a second installation hole for the transmission shaft 2f to pass through, and the rack 3c is arranged vertically; the rack 3c is provided with guide bars 3d distributed along the vertical direction, and the adjusting seat 3a is correspondingly arranged with a vertical direction. The distributed guide grooves 3e, the guide bars 3d slide along the guide grooves 3e so that the rack 3c can move in the vertical direction.

The upper and lower ends of the adjusting seat 3a are provided with openings for the rack 3c to pass through; the side of the adjusting seat 3a facing away from the connecting seat 1a is provided with a third mounting hole, and an end cover 3g is provided in the third mounting hole, and the end cover 3g faces the adjustment One side of the inner cavity of the seat 3a is provided with a positioning groove, and a raised positioning ring 3h is correspondingly provided on the gear 3b. The positioning ring 3h and the positioning groove are used to keep the gear 3b in a relatively fixed position in the adjustment seat 3a, so that the gear 3b and the rack 3c can move stably and reduce the structural complexity.

The lower end of the rack 3c is provided with a sliding hole; specifically, the lower end of the rack 3c is an inverted U-shaped structure, and two rollers 3f are arranged in the vertical direction between the two arms of the inverted U-shaped structure, and the sliding hole consists of two The roller 3f and the two arms of the inverted U-shaped structure are enclosed, and the power grid transmission line 9e is arranged between the two rollers 3f. During use, the power transmission line 9e needs to be controlled through the sliding hole. In order to prevent the power transmission line 9e from being worn out during repeated use, the sliding hole is set to consist of two rollers 3f and a two-arm structure. Rolling is used instead of sliding to reduce friction. , Reduce the wear and tear of the transmission line 9e and improve the smoothness of the action.

The fixing base 2b and the adjusting base 3a are respectively provided with fixing holes 9c, 9d so that they can be fixed on the power grid infrastructure. In order to facilitate installation, in this embodiment, the edges of the fixing seat and the adjusting seat are also provided with a connecting table 9f for connecting and fixing, and the fixing hole is arranged on the connecting table 9f.

As shown in FIG. 7, it also includes a runner 4 and a connection point 5 arranged on the pole. The runner 4 and the connection point 5 are respectively arranged on the front and rear sides of the rack 3c, and the transmission line 9e bypasses the runner 4 and then slides from Connect to connection point 5 through the hole. It is easy to know that the connection point is used to fix the end of the transmission line and electrically connect the transmission line in the subsequent sequence, and is generally a connection point such as an insulator on a pole.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit the protection scope of the present invention. Persons should understand that the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims (7)

1. A transmission line protection device, characterized in that, comprising a power assembly, a transmission assembly and a plurality of adjustment assemblies; The power assembly includes a hollow connecting seat, and the lower end of the connecting seat is provided with a vertically downward power rod; and also includes a plurality of air receiving bowls, which are bowl-shaped structures and are arranged around the connecting seat in an annular array. , and also includes a connecting rod, and the connecting seat and the air receiving bowl are connected by a connecting rod; The transmission assembly includes a vertically arranged transmission rod, the transmission rod and the power rod are coaxially opposite, and the upper end of the transmission rod and the lower end of the power rod are connected to make the transmission rod rotate together with the power rod; it also includes a hollow fixed seat, the top of the fixed seat is provided with. There is a first installation hole, and the transmission rod is inserted into the fixed seat from the first installation hole; the fixed seat is provided with a turbine worm group, the worm in the turbine worm group is provided with a worm hole along its axis, and the lower end of the transmission rod is inserted into the worm hole and the worm. connection; the worm is arranged vertically, the axis of the turbine is arranged horizontally, a shaft hole is arranged at the axis of the turbine, and a transmission shaft is arranged in the shaft hole, and the transmission shaft rotates synchronously with the turbine; The adjustment assembly includes a hollow adjustment seat, and a rack and pinion group is arranged in the adjustment seat, wherein the gear is sleeved on the transmission shaft and rotates synchronously with the transmission shaft, and the adjustment seat is provided with a second installation hole for the transmission shaft to pass through. , the rack is arranged vertically; the rack is provided with guide bars distributed in the vertical direction, the adjustment seat is correspondingly provided with guide grooves distributed in the vertical direction, and the guide bars slide along the guide grooves so that the rack can be vertically distributed Move in a straight direction; the lower end of the rack is provided with a sliding hole; It also includes a runner and a connection point arranged on the pole, the runner and the connection point are respectively arranged on the front and rear sides of the rack, and the transmission line is bypassed from the runner and then passed through the sliding hole and connected to the connection point. 2 . The protection device for transmission lines according to claim 1 , wherein the fixing base and the adjusting base are provided with fixing holes so as to be fixed on the grid infrastructure. 3 . 3 . The protection device for transmission lines according to claim 1 , wherein the lower end of the rack is an inverted U-shaped structure, and two rollers are arranged along the vertical direction between two arms of the inverted U-shaped structure, 3 . The sliding hole is surrounded by two rollers and two arms of the inverted U-shaped structure, and the power grid transmission line is arranged between the two rollers. 4. A transmission line protection device according to claim 1, characterized in that it further comprises a fixing bolt, the fixing bolt comprises a section of threaded column, the connecting seat is provided with a first threaded hole at the corresponding position of the lower end of the transmission rod, and the threaded column is screwed into In the first threaded hole, the upper end of the fixing bolt is provided with a rotating column, the lowermost end of the transmission rod is provided with a rotating hole, the rotating column is inserted into the rotating hole, an adjusting ring is arranged between the worm and the connecting seat, and the upper end face of the adjusting ring is against The lower end face of the worm and the lower end face of the adjusting ring abut the lower surface of the inner cavity of the connecting seat; A reinforcing cylinder is arranged around the first mounting hole on the outer end surface of the fixed seat, and the transmission rod passes through the reinforcing cylinder and extends into the interior of the connecting seat; the part of the transmission rod located inside the connecting seat is provided with a shaft shoulder, and the upper end surface of the shaft shoulder The upper surface of the inner cavity of the connecting seat is pressed against the upper surface of the worm, and the lower end surface of the shaft shoulder is pressed against the upper end surface of the worm. 5. A transmission line protection device according to claim 1, characterized in that the upper and lower ends of the adjustment seat are provided with openings for the rack to pass through; the side of the adjustment seat facing away from the connection seat is provided with a third installation hole, and the first An end cover is arranged in the three mounting holes, a positioning groove is arranged on the side of the end cover facing the inner cavity of the adjusting seat, a raised positioning ring is correspondingly arranged on the gear, and the positioning ring is inserted into the positioning groove. 6. A transmission line protection device according to claim 1, wherein the transmission shaft is connected with the turbine through a metal key and rotates synchronously, and the turbine and the transmission shaft are both provided with a keyway for installing the metal key, wherein the transmission The keyway on the shaft extends to both sides along the shaft body so that the connecting seat can slide along the transmission shaft. 7. A power transmission line protection device according to claim 1, characterized in that, the fixed seat is composed of a boxed structure with an opening on one side and a cover covering the opening, the end face inside the cover and the inner wall of the fixed seat Ring-shaped bearing platforms are respectively arranged on the surfaces opposite to the cover, and rolling bearings are arranged in the two bearing platforms.

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