CN204947532U - A kind of inter-phase spacer dual spring damping device - Google Patents

Abstract

The utility model discloses a double-spring damping device with spacer rods between phases, which comprises a cylindrical spring barrel (1) with grooved flat legs, the lower end of the cylindrical spring barrel (1) is connected with a spring barrel base with a guide barrel (2), the spring cylinder base (2) is connected with the piston-type shaft with flat feet (3), and the piston-type shaft with flat feet (3) is composed of piston (14), cylindrical shaft (15), flat feet ( 16) and screw hole (17); the upper end of the cylindrical shaft (15) is connected to the piston (14), the piston (14) is provided with an exhaust hole (18), and the upper end of the piston (14) is connected to the upper spring (4) , the lower end is connected with the lower spring (5). The utility model has firm connection, simple installation, labor-saving, good waterproof performance, and high strength of the cylinder body, which not only functions as a compression spring but also a tension spring. , to consume the energy generated by the vibration of the wire.

Description

A double-spring damping device with spacer rods between phases

Technical field:

The utility model relates to an interphase spacer double-spring damping device suitable for overhead transmission lines of 35kV and above, which belongs to the field of design, operation and maintenance of overhead transmission lines in power systems.

Background technique:

According to the published literature, so far, there have been 3 related patents, which are described as follows:

1. A damping anti-dancing device (application number 201020532003.7)

The utility model relates to a damping type anti-dancing device, which comprises a spacer bracket, a spring damping assembly and a columnar damping element connected to the spacer bracket, which can release twisting force when the wire dances and effectively improves the resistance of the spacer bracket. Tensile and compressive strength and elastic effects. This patent does not involve a sleeve-type spring shock absorber, but uses a spring. The disadvantage is that when the spring is pulled, the connection between the spring and other connecting parts is not firm, and it is prone to breakage under large-tonnage tension.

2. A rotary spring interphase spacer (application number 201220253251.7)

The spacer is connected with the interphase insulator through the T-shaped veneer, and the spring is used as an elastic structure for energy storage in the spacer. When galloping occurs in the conductors between two phases of the line, the sufficient conditions for galloping of the two-phase conductors are destroyed through the continuous expansion and contraction of the spring, and the purpose of controlling the galloping of the conductors is achieved. This patent does not involve a sleeve-type spring shock absorber, but uses a spring. The disadvantage is that when the spring is pulled, the connection between the spring and other connecting parts is not firm, and it is prone to breakage under large-tonnage tension.

3. A spring shock-absorbing interphase anti-galling spacer (application number 201310614723.6)

It is characterized in that an anti-galling spring shock absorber is connected to the middle of two interphase spacer bar insulators to release galloping self-excited oscillation energy. This patent does not involve a sleeve-type spring shock absorber, but uses a spring. The disadvantage is that when the spring is pulled, the connection between the spring and other connecting parts is not firm, and it is prone to breakage under large-tonnage tension.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a spacer with firm connection, simple installation, labor-saving, good waterproof performance, high cylinder strength, and both the function of compression spring and extension spring. Rod double spring damper.

The purpose of this utility model can be achieved through the following measures: a double spring damping device with spacer rods between phases, which includes a cylindrical spring tube, which is characterized in that the cylindrical spring tube is provided with a groove-shaped flat foot with a connecting screw hole , the lower end of the cylindrical spring barrel is connected to the spring barrel base with guide barrel and fastened by lock bolts, the spring barrel base is connected to the piston shaft with flat feet, and the piston shaft with flat feet is composed of piston, cylindrical shaft Composed of rod, flat foot and screw hole; the lower end of the cylindrical shaft is provided with a flat foot with a screw hole, the upper end of the cylindrical shaft is connected to the piston, the piston is provided with an exhaust hole, the upper end of the piston is connected to the upper spring, and the lower end is connected to the lower spring .

In order to further realize the purpose of the utility model, the spring cylinder base is composed of a bottom plate and a guide cylinder with a fixed shaft hole, and the guide cylinder protrudes above and below the bottom plate.

In order to further realize the purpose of the utility model, the inner wall of the mouth of the lower end of the cylindrical spring container is provided with a threaded button, and the bottom plate is engraved with a threaded button, and the base of the spring container is connected with the cylindrical spring container through the threaded button.

Compared with the prior art, the utility model can produce the following positive effects: the utility model is installed on one or both ends of the interphase spacer. During the dancing process of the wire, no matter whether the interphase spacer is pulled or pressed, the spring damping device The upper spring or the lower spring will be compressed to consume the energy generated by the galloping of the line, thereby reducing the galloping amplitude of the line and playing the role of anti-galling; it can also play the role of consuming the vibration energy of the wire. The cylinder body of the spring cylinder is a closed cylinder, and the upper end of the cylinder body is integrated with the groove-shaped flat foot; the inner wall of the lower end is reserved with a threaded buckle to facilitate the connection with the spring cylinder base with a threaded buckle; the spring The base of the cylinder is provided with a guide cylinder matched with the shaft of the piston; the shaft of the piston passes through the guide cylinder of the base of the spring cylinder. Then use anti-dismounting bolts to firmly connect the cylinder body of the spring cylinder to the base of the spring cylinder to avoid loosening of the threaded buckle. The piston is reliably connected with the upper and lower springs to avoid friction between the upper and lower springs and the inner wall of the spring barrel; a number of exhaust holes are reserved on the piston to facilitate the exhaust and air intake of the closed sleeve when the piston moves repeatedly. The utility model realizes the double function of compression spring and extension spring through two built-in springs and a piston-type shaft rod, thereby avoiding the defect that the spring is not firmly connected with other connecting parts when the spring is pulled, the installation is simple, labor-saving, and waterproof Good performance, high cylinder strength.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the piston shaft part with flat feet;

Fig. 3 is the structural representation of the cylindrical spring container with grooved flat pin;

Fig. 4 is a structural schematic diagram of a spring cylinder base with a guide cylinder.

The specific embodiment: below in conjunction with accompanying drawing, the best embodiment of the present utility model is described in detail:

Embodiment: A double-spring damping device with spacer rods between phases (see Figure 1-Figure 4), which includes a cylindrical spring barrel 1, which is composed of a cylinder body 7 and a groove-shaped flat foot 9, and the cylinder body 7 is provided with a grooved flat foot 9, and the grooved flat foot 9 is provided with a connecting screw hole 10, and the inner wall of the lower end of the cylinder 7 is provided with a screw thread, and the lower end of the cylinder 7 of the cylindrical spring cylinder 1 is connected The spring cylinder base 2 with guide cylinder is fastened by anti-loosening bolts 6. The spring cylinder base 2 is composed of a bottom plate 12 and a guide cylinder 13 with a fixed shaft hole. The guide cylinder 13 protrudes above and below the bottom plate 12 to ensure The piston shaft rod 3 is displaced in the axial direction. Bottom plate 12 is engraved with screw thread 11 outside, is convenient to be connected with cylindrical spring barrel 1. The spring cylinder base 2 is connected with a piston-type shaft 3 with flat feet, and the piston-type shaft 3 with flat feet is composed of a piston 14, a cylindrical shaft 15, a flat foot 16 and a screw hole 17; the lower end of the cylindrical shaft 15 is connected with a flat Pin 16, flat pin 16 is provided with screw hole 17. The upper end of the cylindrical shaft rod 15 is welded or threaded to connect the piston 14, and the piston 14 is provided with a number of exhaust holes 18, which are convenient for exhaust and air intake when the piston 14 moves repeatedly. The upper end of the piston 14 is connected with the upper spring 4, and the lower end is connected with the lower spring 5. The cylindrical spring barrel 1 with grooved flat feet is located at the top, and the spring barrel base 2 and the piston-type shaft rod 3 with flat feet are positioned at the bottom, so as to prevent the upper spring 4 and the lower spring 5 from being corroded by water.

When assembling, first put the cylindrical shaft 15 of the piston shaft 3 with flat feet on the spring barrel base 2 and the lower spring 5 in sequence, and then put the cylindrical shaft 15 of the piston shaft 3 with flat feet on the piston 14 Welding or threaded connection is firm, and secondly, the upper spring 4 and the lower spring 5 are firmly connected with the upper and lower surfaces of the piston 14 respectively; again, the spring barrel base 2 with the threaded buckle is screwed into the barrel of the cylindrical spring barrel 1 7 miles; Finally, adopt some anti-loosening bolts 6 to fasten at the cylinder body 7 bottom edge mouth of cylindrical spring container 1, avoid spring container base 2 to drop out because of wire vibration. The end of the composite insulator in the interphase spacer is generally a flat leg structure. Therefore, the upper end of the cylindrical spring tube 1 should be a groove-shaped flat leg structure, which is convenient for the connection of the composite insulator in the interphase spacer and the same body.

The device of the utility model is installed at one or both ends of the interphase spacer. During the vibration or galloping process of the wire, when the interphase spacer is pressed, the upper spring in the spring damping device will be compressed; when the interphase spacer is pulled, the spring The lower spring in the damping device will be compressed; therefore, no matter whether the interphase spacer is under tension or compression, the spring damping device will always consume the energy generated by line vibration or galloping, thereby reducing the line vibration or galloping amplitude, and playing the role of anti-galling and anti-vibration . Through the perfect combination of the elastic deformation of the upper spring and the lower spring, a new balance is automatically achieved.

Claims (3)

1. A double-spring damping device with spacer rods between phases, which includes a cylindrical spring barrel (1), characterized in that the cylindrical spring barrel (1) is provided with a grooved flat foot with a connecting screw hole (10) ( 9), the lower end of the cylindrical spring barrel (1) is connected to the spring barrel base (2) with a guide barrel and fastened by the lock bolt (6), and the spring barrel base (2) is connected to the piston shaft with flat feet (3), the piston shaft with flat feet (3) is composed of piston (14), cylindrical shaft (15), flat feet (16) and screw holes (17); the lower end of cylindrical shaft (15) is set There is a flat foot (16) with a screw hole (17), the upper end of the cylindrical shaft rod (15) is connected to the piston (14), the piston (14) is provided with an exhaust hole (18), and the upper end of the piston (14) is connected to the Spring (4), the lower end connects lower spring (5). 2. A double-spring damping device with spacer rods according to claim 1, characterized in that the spring cylinder base (2) is composed of a bottom plate (12) and a guide cylinder (13) with a fixed shaft hole. Tube (13) all protrudes up and down on base plate (12). 3. A double-spring damping device with spacer rods according to claim 2, characterized in that the inner wall of the lower end of the cylindrical spring tube (1) is provided with a screw thread, and the bottom plate (12) is engraved There is a threaded button (11), and the spring barrel base (2) is connected with the cylindrical spring barrel (1) through the threaded button.