CN105971365B

CN105971365B - Fixing device and power transmission pole

Info

Publication number: CN105971365B
Application number: CN201610403044.8A
Authority: CN
Inventors: 马斌; 郁杰; 李德权; 颜启昕; 王佳佳; 邱勇
Original assignee: Jiangsu Shenma Electric Power Co Ltd
Current assignee: Jiangsu Shenma Electric Power Co Ltd
Priority date: 2016-06-08
Filing date: 2016-06-08
Publication date: 2021-05-18
Anticipated expiration: 2036-06-08
Also published as: AR108701A1; WO2017211208A1; CN105971365A; TW201742976A

Abstract

The utility model provides a fixing device and transmission of electricity pole, fixing device are used for fixing the cross arm on the body of rod of transmission of electricity pole, and fixing device includes body of rod connecting piece and cross arm holding piece, body of rod connecting piece is used for connecting the body of rod with the cross arm holding piece, the cross arm holding piece is used for the holding the cross arm. Because the cross arm accommodating piece on the fixing device accommodates the cross arm and is fixed on the rod body, the cross arm is prevented from being punched, the mechanical property of the cross arm is ensured, the cross arm is prevented from being broken, and the fault that the wire is disconnected is further avoided.

Description

Fixing device and power transmission pole

Technical Field

The invention relates to a fixing device, in particular to a fixing device for fixing a cross arm on a power transmission pole.

Background

In an overhead transmission line, a transmission tower plays a role of supporting a conducting wire, particularly, the conducting wire is supported through a cross arm fixed on a rod body of the transmission tower, and the conducting wire is hung at a free end of the cross arm of the transmission tower in a specific mode. The cross arm needs to satisfy certain mechanical property and insulating property. The cross arm is required to bear the dead weight of the lead and the wind swinging force, so that the cross arm is required to meet higher requirements on mechanical properties.

The method disclosed in patent CN88107801.8 is to make holes in the cross-arm, make the hoop surround the rod body of the power transmission pole and pass through the holes in the cross-arm, and then fix the hoop on the cross-arm by using fasteners, thereby fixing the cross-arm on the power transmission pole. However, the mechanical properties of the cross arm are seriously affected by punching holes in the cross arm, and when the cross arm is a composite cross arm, the mechanical properties of the cross arm are obviously affected by punching holes in the cross arm, and particularly, the bearing capacity of the cross arm in the width direction to a load is weaker. The cross arm with weak load bearing capacity is likely to break in use, and influences are caused on the power transmission line.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a fixing device, which solves the problems of weak load bearing capacity and poor mechanical property of a cross arm caused by punching holes on the cross arm when the cross arm and a rod body are fixed.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a fixing device is used for fixing a cross arm on a rod body of a power transmission pole, and comprises a rod body connecting piece and a cross arm accommodating piece, wherein the rod body connecting piece is used for connecting the rod body and the cross arm accommodating piece, and the cross arm accommodating piece is used for accommodating the cross arm.

The rod body connecting piece is adopted to connect the rod body and the cross arm accommodating piece, and the cross arm accommodating piece is used for accommodating the cross arm, so that the cross arm and the rod body can be fixed together. Because the cross arm accommodating piece is used for accommodating the cross arm, holes do not need to be drilled on the cross arm, the mechanical property of the cross arm is ensured, the cross arm can normally support a conducting wire, and the normal operation of a power transmission line is ensured.

Preferably, the cross arm accommodating part comprises a cavity for accommodating the cross arm, and the inner wall of the cavity is matched with the outer surface of the cross arm accommodated in the cavity.

The inner wall of the cavity of the cross arm containing piece is matched with the outer surface of the cross arm contained in the cross arm containing piece, so that the cross arm can be fixed more firmly and stably, and the stress between the cross arm containing piece and the cross arm is more uniform.

Preferably, the cross arm accommodating part surrounds the cross arm along the circumferential direction of the cross arm. The cross arm accommodating piece and the cross arm are tightly and firmly fixed together, and the rod body and the cross arm can be connected more stably.

Preferably, the rod connector entirely surrounds the rod in a circumferential direction of the rod. The rod body connecting piece and the rod body are tightly and firmly fixed together, and the connection between the rod body and the cross arm is more stable.

Preferably, the bar body connector partially surrounds the bar body in a circumferential direction of the bar body, and the cross arm receiver partially surrounds the cross arm in a circumferential direction of the cross arm. The fixing device formed by the rod body connecting piece partially surrounding the rod body and the cross arm accommodating piece partially surrounding the cross arm is simple in structure and convenient to install.

Preferably, the inner wall of said shank connector is conformed to the outer surface of said shank enclosed therein. The rod body can be more firmly and stably fixed, and the stress between the rod body connecting piece and the rod body is more uniform.

Preferably, the cross arm accommodating piece comprises at least two U-shaped anchor ears.

Preferably, the fixing device includes two U-shaped hoops, the cross arm accommodating part is a closed end of each U-shaped hoop, the closed ends surround the cross arm, and the rod connecting part is formed by oppositely bending and butting open ends of the two U-shaped hoops and surrounds the rod.

Preferably, the cross arm receiving member includes a first connecting piece, the first connecting piece is provided with a first mounting hole, and the cross arm and the power transmission pole are fixed together by the cooperation of the rod body connecting member, the first mounting hole and a fastening member.

The first connecting piece is provided with a first mounting hole, and the rod body connecting piece and the cross arm accommodating piece can be connected together in a plurality of fixing modes by matching the first mounting hole, such as the cooperation of a bolt and a nut or the fastening of the nut by using the nut alone.

Preferably, the first connecting piece is provided with at least two first mounting holes, the rod connector includes at least two connecting arms, the connecting arms pass through the first mounting holes, and the cross arm and the power transmission pole are fixed together by using fasteners.

Preferably, the rod connector includes two U-shaped hoops vertically disposed along the rod body, the cross arm is located between the two U-shaped hoops, the first connecting piece is provided with four first mounting holes, two first mounting holes are located above the cross arm, the other two first mounting holes are located below the cross arm, and the connecting arms of the two U-shaped hoops are matched with the first mounting holes to fix the cross arm on the rod body.

Preferably, the rod connector includes a second connecting piece, the second connecting piece is provided with a second mounting hole, and the cross arm and the power transmission pole are fixed together by passing a bolt through the first mounting hole and the second mounting hole and fixing the bolt with a nut.

Preferably, at least two holes corresponding to the first mounting hole and the second mounting hole are provided. The more corresponding holes are formed in the first mounting hole and the second mounting hole, the firmer the connection between the rod body connecting piece and the cross arm accommodating piece is.

Preferably, the rod connector includes a third connecting piece, the third connecting piece is provided with a third mounting hole, the cross arm accommodating member includes at least two rods, the rods pass through the third mounting hole, and the cross arm and the power transmission rod are fixed together by using a fastening member.

Preferably, the cross arm accommodating part comprises two U-shaped hoops, the two U-shaped hoops are used for surrounding the cross arm and are positioned at two sides of the rod body, and the rod of the U-shaped hoop is matched with the third mounting hole to fix the cross arm on the rod body.

Aiming at the defects of the prior art, the invention further aims to provide the power transmission pole, and the problems of weak load bearing capacity and poor mechanical property of the cross arm caused by punching on the cross arm when the cross arm and the pole body are fixed are solved.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a power transmission pole includes the pole body and the cross arm fixed to the pole body, and the power transmission pole fixes the pole body and the cross arm using the fixing device.

The fixing device is used for fixing the rod body and the cross arm, the rod body and the cross arm are fixed more firmly, holes do not need to be punched in the cross arm, and the mechanical property of the cross arm is guaranteed. Since the pole body and the cross arm are components of the power transmission pole, the structure of the power transmission pole in which the pole body and the cross arm are fixed by using the fixing device is more stable, and the normal operation of the power transmission pole can be guaranteed when a wire is supported.

Drawings

Figures 1 to 5 are schematic views of a first embodiment of the present invention,

wherein:

FIG. 1 is a perspective view of a fixation device 100;

FIG. 2 is a perspective view of the shank link 200 of the fixture 100;

FIG. 3 is a perspective view of the cross arm receiver 300 of the fixture 100;

fig. 4 is a schematic view of the fixing device 100 mounting the cross arm 3 on the transmission pole 2;

fig. 5 is an enlarged view of the fastening of fig. 4.

Figures 6 to 9 are schematic views of a second embodiment of the present invention,

wherein:

FIG. 6 is a perspective view of the fixture 110;

FIG. 7 is a perspective view of the shank link 400 of the fixture 110;

fig. 8 is a schematic view of the fixing device 110 mounting the cross arm 5 on the transmission pole 4;

fig. 9 is a partial enlarged view of the fastening of fig. 8.

Figures 10 to 14 are schematic views of a third embodiment of the present invention,

wherein:

fig. 10 is a perspective view of the fixing device 120;

FIG. 11 is a perspective view of the shank link 600 of the fixture 120;

FIG. 12 is a schematic view of a cross arm pod 700;

fig. 13 is a schematic view of the fixing device 120 mounting the cross arm 6 on the transmission pole 7;

fig. 14 is a partial enlarged view of the fastening of fig. 13.

Fig. 15 and 16 are schematic views of the mounting of the cross arm 9 on the transmission pole 8 by the four fixing devices 130 according to the embodiment of the present invention.

Fig. 17 is a schematic view of the fifth fixing device of the embodiment of the present invention for mounting the cross arm 11 on the transmission pole 10.

Fig. 18 is a schematic view of a six-fixture mounting a cross-arm to a transmission pole according to an embodiment of the present invention.

Detailed Description

As required, detailed embodiments of the present invention are disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed manner, including employing various features disclosed herein in combination with features that may not be explicitly disclosed herein.

The first embodiment is as follows:

fig. 1 is a schematic view of a fixing apparatus 100, wherein the fixing apparatus 100 includes a rod connector 200 and a cross arm receiver 300, and the rod connector 200 and the cross arm receiver 300 are fixed together by bolts and nuts. Rod body connecting piece 200 is used for the full surrounding rod body, and cross arm container 300 is used for the local surrounding cross arm, through the connection of rod body connecting piece 200 and cross arm container 300 alright fix the cross arm on the rod body, and need not punch on the cross arm.

In the present embodiment, the rod body connector 200 is a hardware fitting having two half hoops 210 as shown in fig. 2. Each half hoop 210 is semi-circular and the two halves 210 can be butted to form a circle. The fastening device 100 is therefore most suitable for fastening cylindrical rods, which can be completely surrounded in the circumferential direction of the rod.

The two ends of each half hoop 210 comprise a lug 211, the lugs 211 are provided with holes 212, bolts can penetrate through the corresponding holes 212 on the two half hoops 210, and the bolts are fixed by nuts, so that the two half hoops 210 can be fixed together. The two half anchor ears 210 are combined to fasten the rod body, so that the rod body can be conveniently and firmly and stably fixed on the rod body, and the rod body can be prevented from being directly contacted with the cross arm to cause abrasion.

In addition to the two anchor halves 210, the rod connector 200 further includes a second strap 220, and more particularly, the second strap 220 is disposed on one of the anchor halves 210. The second connecting piece 220 is provided with a second mounting hole 221, and specifically, four second mounting holes 221 are provided. The second connecting piece 220 facilitates the connection between the rod connector 200 and the cross arm receiver 300. Two transition plates 230 are further arranged between the second connecting piece 220 and the half hoop 210 connected with the second connecting piece, and two ends of each transition plate 230 are respectively connected with the half hoop 210 and the second connecting piece 220. The second connecting piece 220, the transition plate 230 and the half hoop 210 connected to the second connecting piece 220 may be integrally formed, or any two parts may be welded and fixed.

As shown in fig. 3, the cross arm receiving member 300 includes a receiving portion 310 and first connecting pieces 320, and the first connecting pieces 320 are located at both sides of the receiving portion 310. The receiving portion 310 is a half-shell with a hollow rectangular cross section, and is matched with the outer surface shape of the cross arm with a rectangular cross section to be received. The accommodating part 310 of the cross arm accommodating part 300 is designed to be matched with the outer surface shape of the rectangular cross arm to be accommodated, so that the shaking of the cross arm can be reduced, and the stability is improved. Corresponding to the second connection piece 220, four first mounting holes are also provided on the first connection piece 320, and the first mounting holes and the second mounting holes 221 can be paired and correspond to each other, so as to be fastened by bolts and nuts. The provision of four pairs of corresponding holes reinforces the connection of the stick connector 200 with the cross arm receiver 300, as opposed to forming one or two pairs of corresponding holes.

Fig. 4 is a schematic view showing that the cross arm 3 is fixed on the rod body 2 by the fixing device 100, the cross arm 3 is integrally fixed on one side of the rod body 2 by the fixing device 100, and both ends of the cross arm 3 are used for supporting wires. As shown in fig. 5, the two half hoops 210 completely surround and fasten the rod body 2 along the circumferential direction of the rod body 2, the accommodating part 310 accommodates the cross arm 3, specifically, partially surrounds along the circumferential direction of the cross arm 3, and the second connecting piece 220 and the first connecting piece 320 are fixed together by bolts through the corresponding holes, so that the cross arm 3 is fixed on the rod body 2 of the power transmission pole without punching holes on the cross arm 3.

Because the cross arm 3 is accommodated in the accommodating part 310, holes do not need to be drilled on the cross arm 3, so that the mechanical property of the cross arm 3 is not damaged, the cross arm 3 is prevented from being damaged or broken, a wire is prevented from being disconnected, and the normal operation of a power transmission line is ensured.

Example two:

as shown in FIG. 6, in this embodiment, securing device 110 includes a rod connector 400 and a cross arm receiver 500, and rod connector 400 and cross arm receiver 500 may be secured together.

The rod connector 400 includes a circular anchor ear 410 and a second connecting piece 420 connected to the circular anchor ear 410. The rod connector 400 is used to receive and secure a rod.

The round hoop 410 is provided with an opening end, the opening end comprises two corresponding lugs 411, the two lugs 411 are provided with corresponding holes 412, the bolts penetrate through the two corresponding holes 412, and the opening end of the round hoop 410 can be fixed by combining nuts and can be fastened on a rod body. The inner wall of the circular hoop 410 is matched with the outer surface of the rod body to be accommodated, so that the circular hoop can be conveniently and stably fixed on the rod body.

The structure of the second connecting piece 420, the connection between the second connecting piece 420 and the anchor ear 410, and the function are the same as those of the first embodiment, and are not described herein again.

In the present embodiment, the structure and the function of the cross arm accommodating part 500 are the same as those in the first embodiment, and are not described herein again.

As shown in fig. 8, the rod body 4 and the cross arm 5 are fixed together by the fixing device 110, and both ends of the cross arm 5 are used for supporting the wires. The enlarged view of the fastening point is shown in fig. 9, wherein the rod connector 400 is completely enclosed in the circumferential outer surface of the rod 4, and the cross arm receiver 500 is partially enclosed in the circumferential outer surface of the cross arm 5. In view of the structure of the circular hoop 410, the specific fixing process may be as follows: the rod connector 400 is fitted over the rod 4 from the upper portion of the rod 4, and then the two tabs 411 of the open end of the circular hoop 410 are coupled by bolts and nuts, thereby fastening the rod connector 400 to the rod 4. The cross arm 5 is placed in the cross arm accommodating member 500, and then the first mounting hole of the cross arm accommodating member 500 is aligned with the second mounting hole of the second connecting piece 420 of the rod body connecting member 400, and then the rod body connecting member 400 and the cross arm accommodating member 500 are fastened by using the bolt and the nut, so that the cross arm 4 is fixed on the rod body 5 without punching a hole on the cross arm 4.

In this embodiment, the rod connector 400 only includes a circular anchor ear 410, so that the structure of the fixing device 110 is simplified and the number of places to be fixed is reduced. The circular hoop 410 also surrounds the rod 4 in the circumferential direction, so that the rod connector 400 is more stable to fix the rod 4 and avoids direct contact with the cross arm 5, and abrasion is avoided. The design of the fixing device 110 can also firmly fix the cross arm 5 and the rod body 4 together without punching holes on the cross arm 5, so that the bearing capacity of the cross arm on load is ensured, and the faults of cross arm fracture and wire disconnection are reduced.

Example three:

as shown in fig. 10, in the present embodiment, the fixing device 120 includes a rod connector 600 and a cross arm receiving member 700 connected to the rod connector 600. The rod connector 600 is used for accommodating a rod, and the cross arm accommodating part 700 is used for accommodating a cross arm.

As shown in FIG. 11, the rod connector 600 includes a U-shaped anchor ear 610 and second coupling pieces 620 coupled to both sides of the U-shaped anchor ear 610. A second mounting hole 621 is formed in the second connection piece 620, and in particular, four second mounting holes 621 are formed in the second connection piece 620 of the lever connector 600. The U-shaped hoop 610 is used for accommodating a rod body, and the inner surface of the U-shaped hoop 610 is matched with the surface of the rod body accommodated by the hoop. The second connecting piece 620 is used for connecting the cross arm accommodating piece 700.

As shown in fig. 12, the cross arm receiver 700 includes a cross arm receiving portion 710 and first connecting pieces 720 at both sides of the cross arm receiving portion 710. Cross arm receiving portion 710 is for receiving a cross arm and first connecting tab 720 is for connecting rod connector 600.

The cross arm accommodating part 710 is a shell with a hollow semicircle cross section, and the inner wall of the shell is matched with the outer surface of the cross arm to be accommodated. Of course, the cross section of the inner cavity of the shell can be rectangular or polygonal. The first connection piece 720 is provided with four first mounting holes corresponding to the second connection pieces 620.

As shown in fig. 13, the cross arm 6 is fixed to the rod body 7 by a fixing device 120. As shown in fig. 14, the cross arm 6 is located in the cross arm accommodating portion 710, the cross arm accommodating portion 710 partially surrounds the cross arm 6 along the circumferential direction of the cross arm 6, the U-shaped hoop 610 partially surrounds the rod 7, and the rod connector 600 and the cross arm accommodating portion 700 are connected together through corresponding holes on the second connecting piece 620 and the first connecting piece 720. Because cross arm 6 is located within cross arm receptacle 710, it is not necessary to make holes in cross arm 6.

Example four:

as shown in fig. 15 and 16, in the present embodiment, the fixing device 130 includes a rod connector 800 and a cross arm receiver 900, and the rod connector 800 is connected with the cross arm receiver 900.

The rod connector 800 includes two U-shaped hoops 810 arranged up and down, and the U-shaped hoops 810 partially surround the rod 8. The open end of the U-shaped anchor ear 810 is a threaded arm for connecting the cross arm receiver 900.

The cross arm accommodating member 900 is the same as the embodiment, and is not described herein again.

During specific installation, the cross arm 9 is placed in the cross arm accommodating part 900, the cross arm 9 is located between the two U-shaped hoops 810 of the rod body connector 800, the threaded arm of the U-shaped hoop 810 penetrates through the first installation hole in the cross arm accommodating part 900, and the rod body connector 800 and the cross arm accommodating part 900 can be fixed by nuts.

Example five:

as shown in fig. 17, the rod connector in this embodiment is similar to the cross arm accommodating member 900 in the fourth embodiment, that is, the rod connector includes an accommodating member (not shown) in the middle and third connecting pieces (not shown) on both sides of the accommodating member, and the third connecting pieces are provided with four third mounting holes (not shown).

The cross arm accommodating member 1000 in this embodiment includes two horizontally arranged U-shaped hoops 1100, and the two U-shaped hoops 1100 are respectively located at two sides of the rod 10. The receiving portion 1110 of each U-shaped hoop 1100 forms a rectangular receiving cavity for receiving the cross arm 11 with a rectangular cross section. Thus, the inner wall of the accommodating part 1110 is matched with the outer surface of the cross arm 11, so that the cross arm 11 is more stably installed and does not shake.

Example six:

obviously, besides the structure in the fourth embodiment and the fifth embodiment, the fixing device may also be a structure as shown in fig. 18, that is, two hoops surround the rod body and the cross arm. The cross arm accommodating piece comprises two U-shaped anchor ears, specifically a U-shaped anchor ear 12 and a U-shaped anchor ear 13. U type staple bolt 12 and U type staple bolt 13 all surround cross arm 14, and the open end of U type staple bolt 12 and U type staple bolt 13 is relative crooked, forms body of rod connecting piece. The ends of the two arms of the U-shaped hoop 12 are provided with connecting plates 15, the connecting plates 15 are provided with holes, the two arms of the U-shaped hoop 13 are provided with threads, and the two arms of the U-shaped hoop 13 penetrate through the connecting plates 15 to butt the open ends of the two arms together so as to surround the periphery of the rod body.

The protective fixing device comprises a rod body connecting piece and a cross arm accommodating piece, wherein the cross arm accommodating piece is mainly used for accommodating the cross arm, and the cross arm is fixed on a rod body without punching on the cross arm by virtue of the connection of the cross arm accommodating piece and the rod body connecting piece. While a limited number of embodiments are disclosed, it is within the scope of the present invention to provide some variation in the rod connectors or cross arm receivers.

While the invention has been described with reference to the above disclosure and features, it will be understood by those skilled in the art that various changes and modifications in the above constructions and materials can be made, including combinations of features disclosed herein either individually or in any combination, as appropriate, without departing from the spirit of the invention. Such variations and/or combinations are within the skill of the art to which the invention pertains and are within the scope of the following claims.

Claims

1. The utility model provides a fixing device for fix the cross arm on the body of rod of transmission of electricity pole, its characterized in that: the fixing device comprises a rod body connecting piece and a cross arm accommodating piece, the rod body connecting piece is used for connecting the rod body and the cross arm accommodating piece, the rod body connecting piece partially surrounds the rod body along the circumferential direction of the rod body, the cross arm accommodating piece is used for accommodating the cross arm, the cross arm accommodating piece partially surrounds the cross arm along the circumferential direction of the cross arm, the fixing device comprises two U-shaped hoops, the cross arm accommodating piece is a closed end of each U-shaped hoop, the closed ends surround the cross arm, the rod body connecting piece is formed by oppositely bending and butting the open ends of the two U-shaped hoops, and surrounds the rod body, the rod body connecting piece comprises a connecting plate, a hole is arranged on the connecting plate, and the opening end of the U-shaped hoop penetrates through the hole, and then the cross arm and the power transmission pole can be fixed together by using a fastener.

2. The fixture of claim 1, wherein: the inner wall of the cross arm accommodating piece is matched with the outer surface of the cross arm accommodated in the cross arm accommodating piece.

3. The fixture of claim 1, wherein: the inner wall of the rod body connecting piece is matched with the outer surface of the rod body enclosed in the rod body connecting piece.

4. The fixture of claim 1, wherein: and the two U-shaped hoops are positioned on two sides of the rod body.

5. A power transmission pole comprising a pole body and a cross arm fixed to the pole body, characterized in that: the transmission pole secures the mast body and the cross-arm using the securing device of any one of claims 1 to 4.