CN106451209B - A kind of replacing insulator string auxiliary device - Google Patents

Abstract

The invention provides an auxiliary device for replacing insulator strings, which includes a fixing fixture, a central shaft, a rotating support plate and an insulator fixing plate. The fixing fixture includes a U-shaped bracket, a compression threaded rod and an L-shaped compression clamp. A threaded through hole is symmetrically arranged on the two side walls of the U-shaped bracket, the pressing threaded rod is sleeved in the threaded through hole, the L-shaped pressing plate is arranged on the top of the pressing threaded rod, and the central axis is fixedly arranged on the lower surface of the U-shaped bracket , the rotating support plate is nested on the central axis, the insulator fixing plates are respectively arranged at both ends of the rotating supporting plate, an open through groove is opened on the insulator fixing plate, and a penetrating open slot is opened near the outer edge of the insulator fixing plate. Pin holes for through slots. The invention is simple in structure and easy to operate; in the application process, the insulator fixing plate can directly assist the dismantling of the old suspension insulator and quickly locate the installation of the new insulator, which not only improves the work efficiency, but also reduces the labor intensity of workers.

Description

An auxiliary device for replacing insulator strings

technical field

The invention relates to an auxiliary device for replacing an insulator string.

Background technique

In the erection of high-voltage lines, many lines are erected at high altitude. High-altitude lines usually require insulators or insulator strings to fix high-voltage lines on strain towers or straight towers. On straight towers, insulator strings are generally used to fix transmission lines. After long-term use, the insulator strings will age or be damaged. In order to ensure the insulation performance of the insulator strings, electric maintenance personnel are required to regularly check and maintain the insulator strings. Once a problem is found with the insulator strings, they need to be replaced immediately. The replacement of existing insulator strings is mainly done manually by staff. When installing new insulator strings, the staff generally use ropes to lift the insulator strings to the vicinity of the replacement position. Because the ropes are soft and the insulator strings are heavy, the insulator strings It is difficult to align the fixing piece on the top with the fixing hardware on the cross arm. Sometimes the staff needs to lift the entire insulator string to complete the smooth installation of the insulator string. This method of insulator installation is not only inefficient, but also brings The work intensity is also greater.

Contents of the invention

The purpose of the present invention is to provide an auxiliary device for replacing insulator strings, which can quickly align the fixing parts on the top of the insulator strings with the fixing hardware on the cross arm, thereby improving the installation efficiency of the insulator strings.

The technical solution adopted by the present invention to solve the technical problem is: an insulator string replacement auxiliary device, including a fixing fixture, a central shaft, a rotating support plate and an insulator fixing plate, and the fixing fixture includes a U-shaped bracket, a compression thread Rod and L-shaped clamping plate, a threaded through hole is symmetrically arranged on the two side walls of the U-shaped bracket, the pressing threaded rod is sleeved in the threaded through hole, and the L-shaped pressing plate Set on the top of the pressing threaded rod, the rotation of the pressing threaded rod can push the L-shaped pressing clamp to move back and forth;

The central shaft is fixedly arranged on the lower bottom surface of the U-shaped bracket, and a rotating through hole is opened in the center of the rotating support plate, and the central shaft is sleeved in the rotating through hole, and at the lower end of the central shaft A circular plate is set, and the two insulator fixing plates are respectively arranged at both ends of the rotating support plate, an open through groove is provided on the insulator fixing plate, and an open slot is opened near the outer edge of the insulator fixing plate. A pin hole runs through the open slot.

Preferably, a square chute is provided at both ends of the rotating support plate, and a square guide plate matched with the direction chute is provided at one end of the insulator fixing plate, and the square guide plate is nested in the square chute.

Further, a bar-shaped slideway connected with the square chute is provided on the upper part of the square chute, a threaded hole is provided at the rear end of the square guide plate, and a push-pull thread is sleeved in the threaded hole. rod, and the push-pull threaded rod is located in the strip-shaped slideway.

Preferably, a rotating sleeve coaxial with the rotating through hole is arranged on the rotating support plate.

Preferably, an external thread is provided at the lower end of the central shaft, and an adjusting nut matching the external thread is sleeved on the central shaft.

Preferably, a beveled surface is respectively provided at the intersection of the open through groove and the outer side wall of the insulator fixing plate.

Preferably, a layer of rubber pad is provided on the upper plane of the insulator fixing plate.

The beneficial effects of the present invention are: the present invention is simple in structure, easy to use; The fixing hardware in the present invention can tightly fix the upper end of the whole device on the cross arm of the hanging insulator string and can keep the rotating support plate and the cross arm mutually basic Parallel, the parallelism between the rotating support plate and the cross arm is conducive to the smooth insertion of the subsequent open slots into the central axis of the series connection of the insulator strings, and at the same time, it is conducive to the rotation of the rotating support plate to achieve the position exchange of the new and old insulator strings ;

On the upper part of the insulator fixing plate, because the new insulator string has the same number of insulators as the old insulator string, the installation height of the new insulator string is the same as the removal height of the old insulator string, which ensures that the new Under the premise of a new insulator string, the butt joint between the fixing piece at the top of the new insulator string and the fixing hardware on the cross arm is successfully realized, thereby reducing the labor intensity of the staff; the insulator fixing plate can move a certain distance in the rotating support plate, reducing The positioning accuracy requirements for the initial positioning of the device are satisfied; the height of the rotating support plate can be adjusted by rotating the adjusting nut arranged at the lower end of the central shaft, which is beneficial to adjust the clamping position of the insulator fixing plate when it is clamped into the old insulator string.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some preferred embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the overall structure side view of the present invention;

3 is a schematic diagram of the overall structure of the rotating support plate;

Fig. 4 is a structural schematic diagram of the joint between the bottom end of the central shaft and the rotating support plate;

Fig. 5 is a schematic diagram of the application state of the present invention;

In the figure: 1 fixed clamp, 11 U-shaped bracket, 12 L-shaped clamping plate, 13 Compressing threaded rod, 14 Cross bar, 2 Central shaft, 21 Round plate, 22 Adjusting nut, 23 External thread, 3 Rotating support Plate, 31 direction chute, 32 strip slide, 33 rotating sleeve, 4 insulator fixed plate, 41 open channel, 411 groove surface, 42 pin hole, 43 direction guide plate, 431 threaded hole, 5 rubber skin Pad, 6 pins, 7 cross arms, 8 new insulator strings, 9 old insulator strings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with specific embodiments and accompanying drawings 1-5. Apparently, the described embodiments are only some preferred embodiments of the present invention, not all implementations. example. Those skilled in the art can make similar modifications without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

The present invention provides an auxiliary device for replacing insulator strings (as shown in Figure 1), which includes a fixing fixture 1, a central shaft 2, a rotating support plate 3 and an insulator fixing plate 4, and the fixing fixture 1 includes a U-shaped bracket 11 1. Compress the threaded rod 13 and the L-shaped clamping plate 12. A threaded through hole is symmetrically arranged on the two side walls of the U-shaped bracket 11, and the compressed threaded rod 13 is sleeved in the threaded through hole. The L-shaped compression clamp 12 is arranged on the top of the compression threaded rod 13, and the rotation of the compression threaded rod 13 can push the L-shaped compression clamp 12 to move back and forth. In this specific embodiment, A crossbar 14 is set at the rear end of the compression threaded rod 13, and the rotation of the compression threaded rod 13 is realized by rotating the crossbar 14. The front end of the compression threaded rod 13 is flexibly connected with the L-shaped compression clamping plate, that is, pressing When the tight threaded rod 13 rotates, the L-shaped clamping clamp will not rotate, but the L-shaped clamping clamp 12 will move along with the forward and backward movement of the compressed threaded rod 13, so that the compression threaded rod 13 and the L-shaped clamping plate can be moved. The technology of the above-mentioned kinematic relationship between the clamping plates 12 is an existing mature technology, and will not be described in detail here; in practical applications, the two L-shaped clamping plates can be made to rotate continuously by rotating the cross bar 14 12 is clamped tightly on the cross arm to prepare for the replacement of the subsequent insulator strings.

The central shaft 2 is fixedly arranged on the lower bottom surface of the U-shaped bracket 11, and a rotating through hole is opened in the center of the rotating support plate 3, and the central shaft 2 is sleeved in the rotating through hole, and the rotating support The plate 3 can freely rotate with the central axis of the central axis 2 as the rotating shaft. Further, a rotating sleeve 33 coaxial with the rotating through hole is arranged on the rotating support plate 3. The rotating sleeve 33 can assist in rotating the support The plate 3 smoothly rotates horizontally along the central axis 2, and a circular plate 21 is arranged at the lower end of the central axis 2. The circular plate 21 is used to limit the rotation support plate 3 from falling off from the central axis 2, and the two insulator fixing plates 4 are respectively provided At both ends of the rotating support plate 3, in order to reduce the positioning accuracy required by the cross arm of the present invention, a square chute 31 is respectively opened at the two ends of the rotating supporting plate 3, and fixed on the insulator. One end of the plate 4 is provided with a square guide plate 43 matched with the direction chute 31, and the square guide plate 43 is sleeved in the square chute 31, in order to facilitate the insulator to fix the plate 4 in the square chute 31 The movement inside, here, further open a bar-shaped slideway 32 (as shown in Figure 3 ) connected with the square chute 31 on the top of the square chute 31, behind the square guide plate 43 A threaded hole 431 is opened at the end, and a push-pull threaded rod is nested in the threaded hole 431 (in order to keep the drawings clear, it is not drawn in the accompanying drawings), and the push-pull threaded rod is located on the strip slideway 32 Inside, as shown in Figure 3, the strip-shaped slideway 32 is closed and does not penetrate the edge of the rotating support plate 3, so that it has a restrictive effect on the movement of the push-pull threaded rod, thereby limiting the insulator fixed plate 4, In order to prevent direction guide plate 43 from drawing direction chute 31.

An open through-slot 41 (as shown in FIG. 2 ) is provided on the insulator fixed plate 4 , and a pin hole 42 that runs through the open through-slot 41 is provided near the outer edge of the insulator fixed plate 4 . When in use, the connectors between the insulators are stuck in the open slot 41, and the insulator fixing plate 4 supports the insulators above it, thereby supporting the entire insulator string. In order to facilitate the smooth clamping of the insulator string into the open channel 41, where a bevel surface 411 (as shown in FIG. The upper plane of the insulator fixing plate 4 is provided with a layer of rubber pad 5, the rubber pad 5 can prevent the insulator fixing plate 4 from rubbing the edge of the insulator, inserting a pin in the pin hole 42 can realize the limit of the insulator string, so as to Prevent the insulator from slipping out in the open channel 41 connected in series.

For the convenience of adjusting the height of the rotating support plate 3 within a certain distance range, a section of external thread 23 is provided at the lower end of the central shaft 2, and a section of external thread 23 is sleeved on the central shaft 2. 23 matching adjusting nut 22.

Combined with Figure 5, we will briefly introduce the method of using this device to replace the insulator string: before hoisting the device to the corresponding replacement position with a rope, the first step is to snap the new insulator string 8 into the insulator on the ground In the fixed plate 4, use the rope to hoist the device to the vicinity of the old insulator string 9 that needs to be replaced; in the second step, use the fixing fixture 1 to fix the device on the cross arm 7, and then move another insulator to fix it plate 4, snap the old insulator string 9 onto the corresponding insulator fixing plate 4, pay attention when snapping, the number of insulators on the two insulator fixing plates 4 must be the same, so as to ensure the installation of the new insulator string 8; The third step is to disassemble the upper and lower ends of the old insulator string 9, the cross arm and the transmission line. The old suspension insulator 9 that has been dismantled is still fixed in the insulator fixing plate 4; the fourth step is to remove the outer old insulator string 9 Afterwards, turn and rotate the support plate 3, so that the old insulator string 9 and the new insulator string 8 are exchanged. After the position exchange is completed, the installation of the new insulator string 8 can be directly carried out.

Except for the technical features described in the instructions, all are known technologies by those skilled in the art.

The above described the preferred embodiments and embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments and embodiments, for those of ordinary skill in the art, without departing from the present invention Under the premise of the concept, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (3)

1. An insulator string replacement auxiliary device is characterized in that it includes a fixing fixture, a central shaft, a rotating support plate and an insulator fixing plate, and the fixing fixture includes a U-shaped bracket, a compression threaded rod and an L-shaped compression clamp plate, a threaded through hole is symmetrically arranged on the two side walls of the U-shaped bracket, the pressing threaded rod is sleeved in the threaded through hole, and the L-shaped pressing plate is arranged on the pressing threaded The top of the rod, the rotation of the pressing threaded rod can push the L-shaped pressing clamp to move back and forth; The central shaft is fixedly arranged on the lower bottom surface of the U-shaped bracket, and a rotating through hole is opened in the center of the rotating support plate, and the central shaft is sleeved in the rotating through hole, and at the lower end of the central shaft A circular plate is set, and the two insulator fixing plates are respectively arranged at both ends of the rotating support plate, an open through groove is provided on the insulator fixing plate, and an open slot is opened near the outer edge of the insulator fixing plate. a pin hole extending through the open slot; A square chute is provided at both ends of the rotating support plate, and a square guide plate matched with the square chute is set at one end of the insulator fixing plate, and the square guide plate is sleeved on the Inside the square chute; A strip-shaped slideway connected with the square chute is set on the top of the square chute, a threaded hole is set at the rear end of the square guide plate, a push-pull threaded rod is sleeved in the threaded hole, and The push-pull threaded rod is located in the strip slideway; A rotating sleeve coaxial with the rotating through hole is arranged on the rotating support plate; An external thread is provided at the lower end of the central shaft, and an adjusting nut matched with the external thread is sleeved on the central shaft. 2 . The auxiliary device for replacing insulator strings according to claim 1 , wherein a bevel surface is provided at the intersection of the open through groove and the outer side wall of the insulator fixing plate. 3 . 3 . The auxiliary device for replacing insulator strings according to claim 1 , wherein a layer of rubber pad is arranged on the upper plane of the insulator fixing plate. 4 .