CN103579952B - Bulb fixing-line device for overhead transmission line stringing - Google Patents

Abstract

The invention discloses a ball head cable gripper for overhead line tightening, which comprises an L-shaped plate, a square plate, three screws with pull rings and a top plate, and the L-shaped plate includes a first straight plate and a second straight plate ; The end of the first straight plate away from the second straight plate is provided with a rectangular opening slot; the first straight plate is provided with a first screw hole on both sides of the rectangular opening slot; the square plate is provided with two fourth through holes; the top plate is fixedly arranged on the plate surface of the second straight plate away from the first straight plate, and the top plate is provided with a second screw hole; The third screw hole of the two straight plates; the axis of the second screw hole and the axis of the third screw hole are on a straight line. The ball head wire gripper used for wire tightening of overhead lines of the present invention has the functions of enabling reliable connection between the traction rope and the single string of porcelain bottles, improving the safety and reliability of the wire tightening work of the transmission line conductors, and improving the work efficiency of the wire tightening, etc. advantage.

Description

Ball clamp for overhead lines

technical field

The invention relates to a ball joint clamp used for wire tightening of overhead lines, in particular to a ball joint clamp used for wire tightening of overhead line conductors in a power system.

Background technique

At present, the main method of tightening the wires of transmission lines is to fix the traction rope on the tension clamp. After the wire is tightened, due to gravity, the porcelain bottle is strung under the line, and it needs manpower to twist the porcelain bottle up to the level of the wire and then install it on the cross arm of the pole tower. Guarantee, low line efficiency and high construction cost.

At present, when the wires of a single string of insulators in a transmission line are tightened, a steel wire rope is generally used to tie the traction rope under the second porcelain bottle near the cross arm (the contact between the steel wire rope and the insulator is padded with a sack) to fix the traction rope on the tension clamp. After the wire is tightened, due to gravity, the porcelain bottle string will fall under the line. It takes manpower to twist the porcelain bottle to be level with the wire and then install it on the cross arm of the pole tower. to a good guarantee.

Contents of the invention

The present invention is to avoid the disadvantages of the above-mentioned prior art, and provides a ball clamping device for tightening wires of overhead lines, so as to solve the problems of single string of porcelain bottles falling easily, poor safety of wire tightening of transmission lines, and poor work efficiency. Inferior question.

The present invention adopts the following technical solutions to solve the technical problems.

The ball joint wire clamp used for overhead line tightening, its structural feature is that the ball joint clamp includes an L-shaped plate, a square plate, three screws with pull rings and a top plate, the L The shaped plate includes a first straight plate and a second straight plate fixedly connected with the first straight plate; an end of the first straight plate away from the second straight plate is provided with a The thickness direction runs through the rectangular opening groove of the first straight plate; on the first straight plate, a first screw hole is opened on both sides of the rectangular opening groove; two fourth through holes are opened on the square plate. hole;

The top plate is fixedly arranged on the plate surface of the second straight plate away from the first straight plate, and the top plate is provided with a second screw penetrating through the top plate along the thickness direction of the top plate. hole; the second straight plate is provided with a third screw hole penetrating the second straight plate along the thickness direction of the second straight plate; the axis of the second screw hole and the axis of the third screw hole in a straight line.

The structural features of the ball head wire gripper for overhead line tightening of the present invention also lie in:

The top plate is an inverted U-shaped plate, and the support plates on both sides of the top plate are fixed on the surface of the second straight plate.

The L-shaped plate, the square plate and the top plate are all steel parts.

Compared with the prior art, the beneficial effects of the present invention are reflected in:

The ball clamping device for overhead line tightening of the present invention connects a single string of porcelain bottles and a traction rope through the ball clamping device, and pulls the traction rope through a twisting mill to tighten the wires. The overall structure is simple, convenient and practical, and the line Tight line efficiency fully guarantees construction safety and reduces construction costs. A 15-minute static test with a tensile force of 4 tons proves that the ball head wire gripper for overhead line tensioning of the present invention is safe and reliable.

The ball head wire gripper for overhead line tightening of the present invention has the following advantages:

1) No traction in the process of tightening the line, reducing the unbalanced force on the cross-arm of the tower due to over-traction;

2) When the line is tightened, the porcelain bottle string will not fall, and the force will be parallel, so it is very easy to connect the hanging point of the cross arm.

The ball head wire gripper used for wire tightening of overhead lines of the present invention has the advantages of being able to reliably connect a traction rope and a single string of porcelain bottles, improving the safety and reliability of wire tightening work of transmission lines, and improving the work efficiency of wire tightening.

Description of drawings

Fig. 1 is a front view of the ball head wire gripper used for tightening wires of overhead lines according to the present invention.

Fig. 2 is a left side view of the ball head wire gripper for overhead line tightening according to the present invention.

Fig. 3 is a front view of a square plate of the ball head wire gripper used for tightening wires of overhead lines according to the present invention.

Fig. 4 is a schematic diagram of the construction state of the ball head wire gripper for overhead line tightening according to the present invention.

FIG. 5 is a partially enlarged view of FIG. 4 .

Fig. 6 is a front view of the tackle fixing plate of the present invention.

Fig. 7 is a top view of the tackle fixing plate of the present invention.

Fig. 8 is a front view of the backing plate of the tackle fixing plate of the present invention.

Fig. 9 is a front view of the connecting plate tensioner of the present invention.

Fig. 10 is a left view of the connecting plate tensioner of the present invention.

Labels in attached drawings 1 to 10: 1 fixed pulley, 2 first tightening block, 3 second tightening block, 4 twisting mill, 5 traction rope, 6 block fixing plate, 601 plate-like body, 6011 U-shaped through groove , 6012 first through hole, 602 pulley fixing structure, 6021 vertical plate, 60211 third through hole, 603 backing plate, 6031 second through hole, 7 ball end clamp, 701 L-shaped plate, 7011 first straight plate, 70111 Rectangular open slot, 70112 first screw hole, 7012 second straight plate, 702 square plate, 7021 fourth through hole, 703 top plate, 7031 support plate, 8-plate wire tensioner, 801 V-shaped body, 8011 first leg, 8012 The second leg, 802 hook, 803 fixed plate, 8031 fifth through hole, 9 utility poles, 10 cross arm, 11 single string porcelain bottle, 1101 hanging ring, 1102 connecting column, 12 double string porcelain bottle, 1201 connecting plate, 13 wire , 14 bolts, 15 screws, 1501 pull ring.

The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

detailed description

Referring to Figures 1 to 10, the ball clamp 7 used for overhead line tightening includes an L-shaped plate 701, a square plate 702, three screws 15 with pull rings 1501 and a top plate 703, the L The shaped plate 701 includes a first straight plate 7011 and a second straight plate 7012 fixedly connected with the first straight plate 7011; one end of the first straight plate 7011 away from the second straight plate 7012 is provided with a The thickness direction of the first straight plate 7011 runs through the rectangular opening groove 70111 of the first straight plate 7011; on the first straight plate 7011, a first screw hole 70112 is opened on both sides of the rectangular opening groove 70111; Two fourth through holes 7021 are opened on the square plate 702;

The top board 703 is fixedly arranged on the board surface of the second straight board 7012 away from the first straight board 7011, and the top board 703 is provided with a The second screw hole of the top plate 703; the second straight plate 7012 is provided with a third screw hole penetrating the second straight plate 7012 along the thickness direction of the second straight plate 7012; the axis of the second screw hole and the axis of the third screw hole are on a straight line.

The board surfaces of the first straight board and the second straight board are perpendicular to each other, and they are fixed to each other in a mutually perpendicular manner. The distance between the two first screw holes of the first straight plate is equal to the distance between the two fourth through holes on the square plate, and the diameters of the first screw holes and the fourth through holes are also the same. The square plate can be fixed on the first straight plate by screwing into the fourth through hole and the screw 15 in the first screw hole in turn, and the thread of the screw 15 cooperates with the thread of the first screw hole.

The ball clamp is used to connect single strings of porcelain bottles 11 . A hanging ring 1101 is provided at the end of the single-string porcelain bottle 11 , and the hanging ring and the porcelain bottle are connected through a connecting column 1102 . During the thread tightening operation, the ball joint clamp is arranged on the connecting post 1102, and the connecting post 1102 is located in the rectangular opening groove. Then the square plate is fixed on the first straight plate by the screw 15 with the pull ring, so that the connecting column 1102 of the single string of porcelain bottles is locked in the rectangular opening groove, so that the ball joint clamp can be avoided It falls off from the single-string porcelain bottle, which improves the safety and reliability of the tight line work, and at the same time ensures the personal safety of the on-site staff. Then the traction rope is fastened on the ball clamp, and then the dynamic winch is started, and the traction rope is tightened through the winch, so as to tighten the wires of the transmission line.

Screws 15 with pull rings are screwed into the second screw hole and the third screw hole in turn, and the screws are fixed on the top board and the second straight board.

The top plate 703 is an inverted U-shaped plate, and the supporting plates 7031 on both sides of the top plate 703 are fixed on the surface of the second straight plate 7012 .

The L-shaped plate 701, the square plate 702 and the top plate 703 are all made of steel.

When the ball end clamping device of the present invention is in use, it is used to fix the second pulley 3 with the fixed pulley 1, the first tightening tackle 2, the second tightening tackle 3, the twisting mill 4, the traction rope 5, and the second tightening tackle 3. The fixed plate 6, the connecting plate wire tightener 8 etc. together constitute a combined wire tightening tool, which is used for wire tightening operations on the wires of the overhead line.

The fixed pulley 1 is fixed on the top of the utility pole 9; the tackle fixing plate 6 is fixed on the cross arm 10 of the utility pole 9, and the second tightening tackle 3 is fixed on the tackle fixing plate 6; The first wire tightening block 2 is fixed on the bottom of the utility pole 9; the winch 4 is fixed on the ground; Go around the first wire tightening block 2, the fixed pulley 1 and the second wire tightening block 3 in turn, and then fasten them on the ball head clamp 7; Can realize the tight line of circuit conductor 13.

When it is necessary to tighten the wire 13 of the transmission line, a fixed pulley is installed on the top of the utility pole 9 (pole tower or concrete pole), the bottom end of the utility pole is fixed at the position close to the ground, and the first tightening pulley is fixed, and a motorized winch is set on the ground. grind. The tackle fixing plate is fixed on the cross arm 10 of the utility pole, and the second tensioning tackle is fixed on the tackle fixing plate. The ball joint clamp is clamped on the single-string porcelain bottle 11, or the connecting plate wire tightener is installed on the connecting plate 1201 between the two strings of porcelain bottles of the double-string porcelain bottle 12. The traction rope drawn from the winch bypasses the first wire tightening block, the fixed pulley and the second wire tightening block in turn, and then is fastened to the ball head clamp or the joint plate tensioner, and then the motorized winch is started to pass through the winch. Tighten the traction rope, thereby carrying out tight line to transmission line conductor 13.

One end of the traction rope is fixed on the ball joint clamp, and the other end of the traction rope is fixed on the motor winch to tighten the line after passing through the tensioning pulley and the fixed pulley above the pole tower. In this line tightening method, the connection between the porcelain bottle and the traction rope is relatively firm, and the line tightening block is fixed on the cross arm without falling, so it can improve the line tightening efficiency and fully guarantee the construction safety of the staff. The phenomenon that the falling objects hurt the staff occurs, and the construction cost is reduced.

The tackle fixing plate 6 includes a plate-shaped body 601, a tackle fixing structure 602 for connecting with the second wire tightening tackle 3, and a cross arm for fixing the plate-like body 601 to the utility pole 9 10 on the back plate 603; the plate-shaped body 601 is provided with a U-shaped through groove 6011 penetrating the plate-shaped body 601 along the thickness direction of the plate-shaped body 601; on the plate-shaped body 601, Both sides of the U-shaped through groove 6011 have a first through hole 6012 penetrating through the plate-shaped body 601 along the thickness direction of the plate-shaped body 601; the backing plate 603 is also provided with two The second through hole 6031; the two second through holes 6031 correspond to the positions of the two first through holes 6012; the backing plate 603 is fixed to the plate body 601 by two bolts 14 Above; the tackle fixing structure 602 is arranged on the top of the plate body 601, the tackle fixing structure 602 includes two vertical boards 6021, the two vertical boards 6021 are arranged parallel to each other, each of the two vertical boards 6021 A third through hole 60211 is provided on the vertical plate 6021; a bolt 14 passes through the third through holes 60211 of the two vertical plates 6021 in turn and is fixed in the two third through holes 60211.

The tackle fixing plate is composed of three parts: a plate body, a tackle fixing structure and a backing plate. A U-shaped through-slot is arranged on the plate-like body, and two first through-holes are set at the opening of the U-shaped through-slot, and two second through-holes are correspondingly set on the backing plate, two first through-holes and two second through-holes. The two through holes are basically the same in size, and the distance between the two first through holes is equal to the distance between the two second through holes, so that when the backing plate is attached to the plate-shaped body, the first through hole and the second through hole The axes of the two through holes can be on a straight line, so that a bolt can be inserted into the two through holes so as to fix the backing plate and the plate-like body together. The leaning plate is located at the left end of the plate-shaped body. The tackle fixing structure is arranged in the middle of the plate-shaped body and is located at the top of the plate-shaped body. The two vertical plates are respectively located on both sides of the plate-shaped body and arranged relatively parallel. Each of the two vertical plates is provided with a third through hole, and the two third through holes are coaxial. A bolt passes through the third through holes of the two vertical plates in turn, and the bolt can be tightened after the nut is tightened. The second tightening tackle is fixed by bolts to prevent the second tightening tackle from falling on the ground and injuring the staff, or falling on the ground to affect the working efficiency of the tightening.

During the specific operation, the bolts in the first screw holes are first unloaded, the backing plate is removed, and then the side of the U-shaped through groove opening of the plate-shaped body is close to the cross arm of the utility pole, and the cross arm is clamped. Between the backing plate and the plate-like body, insert two bolts into the two first screw holes and the two second screw holes respectively, tighten the nuts, and tightly fix the backing plate, the cross arm and the plate-like body on the Together, the tackle fixing plate is firmly locked on the cross arm of the utility pole. Then, the second wire tightening block is fixed on the block fixing structure, thereby firmly fixing the second wire tightening block on the cross arm, preventing the second wire tightening block from falling during the wire tightening work process and accidentally injuring the staff , Improve the safety and reliability of on-site work, and fully guarantee the construction safety.

A long rod is fixed on the shaft of the second wire tightening block, and the lower end of the long rod is provided with a ring, and the ring is sleeved on the bolts passing through the two third through holes, and the ring is clamped on the two vertical holes. between the boards.

The plate-shaped body 601 is an arc-shaped plate, and the trolley fixing structure 602 is located at the top of the arc of the plate-shaped body 601 .

The connecting board wire tightener 8 includes a V-shaped body 801, and the V-shaped body 801 includes two legs, and each leg in the two legs is provided with a hook 802; the legs include The first leg 8011 and the second leg 8012, the first leg 8011 is provided with a fixing plate 803, and the fixing plate 803 is provided with a The fifth through hole 8031 of the fixing plate 803 .

The two supporting legs of the connecting plate tensioner are made of a steel bar, the steel bar is bent in a V shape, and the bending part is arc-shaped. There is a hook on each leg. During the wire tightening operation, the connecting board wire tightening device is used to connect the double-string porcelain bottles. A connecting plate 1201 is arranged between the two strings of porcelain bottles 12 of the double-stringing porcelain bottles. The connecting plate 1201 is provided with a plurality of through holes. Hang the two hooks of the connecting plate tightener on the connecting plate 1201 of the double-string porcelain bottle 12, then pass through the fifth through hole on the fixing plate and the through hole on the connecting plate 1201 successively through a bolt 14, and The fixing plate 803 and the connecting plate 1201 are fixed together, thereby preventing the connecting plate wire tightening device from falling off from the double-string porcelain bottle, improving the safety and reliability of the wire tightening work, and at the same time ensuring the personal safety of the on-site staff. The efficiency of line tightening is improved, construction safety is fully guaranteed, and construction cost is reduced.

When the line needs to be tightened, fasten the traction rope to the intersecting part of the two legs of the V-shaped body of the connecting plate tensioner, and then start the dynamic winch, and tighten the traction rope through the winch, so as to align the transmission line conductors. Make a tight line.

The intersection of the two legs of the V-shaped body 801 is arc-shaped.

Claims (1)

1. The ball joint clamp used for overhead line tightening is characterized in that the ball joint clamp (7) includes an L-shaped plate (701), a square plate (702), and three The screws (15) of the ring (1501) and a top plate (703), the L-shaped plate (701) includes a first straight plate (7011) and a second straight plate fixedly connected to the first straight plate (7011) (7012); one end of the first straight plate (7011) away from the second straight plate (7012) is provided with a device that runs through the first straight plate (7011) along the thickness direction of the first straight plate ( 7011) of the rectangular opening slot (70111); on the first straight plate (7011), a first screw hole (70112) is provided on both sides of the rectangular opening slot (70111); the square plate (702) Two fourth through holes (7021) are opened on the top; The top board (703) is fixedly arranged on the board surface of the second straight board (7012) away from the side of the first straight board (7011), and the top board (703) is provided with (703) penetrates the second screw hole of the top plate (703) in the thickness direction; the second straight plate (7012) is provided with a second screw hole penetrating the second straight plate (7012) in the thickness direction. The third screw hole of the straight plate (7012); the axis of the second screw hole and the axis of the third screw hole are on a straight line; The top plate (703) is an inverted U-shaped plate, and the support plates (7031) on both sides of the top plate (703) are fixed on the surface of the second straight plate (7012); The L-shaped plate (701), square plate (702) and top plate (703) are all made of steel.