CN105317914A - Shock absorber used for strut type electrical equipment - Google Patents

Abstract

The invention relates to a shock absorber used for strut type electrical equipment. The shock absorber comprises a cylinder barrel, sliding shock absorbing assemblies, a disc spring, a piston rod and fixing covers arranged at the two ends of the cylinder barrel, wherein the cylinder barrel, the sliding shock absorbing assemblies, the disc spring and the piston rod are coaxially arranged from outside to inside. The sliding shock absorbing assemblies are arranged at the two ends of the disc spring, and memory alloy shock absorbing assemblies are circularly arranged on each sliding shock absorbing assembly along the axis of the cylinder barrel. The shock absorber used for the strut type electrical equipment has the beneficial effects that the shock resistance of the electrical equipment is improved, the use cost of the shock absorber is reduced, and the work efficiency is improved.

Description

A shock absorber for pillar electrical equipment

technical field

The invention relates to power transmission equipment, in particular to a shock absorber for pillar electrical equipment.

Background technique

The pillar electrical equipment in the substation mainly includes lightning arresters, transformers, pillar insulators, and switchgear equipment. Because the equipment is mostly installed on the bracket, the center of gravity is high, the stiffness is small, and the natural vibration frequency is at the excellent frequency of the earthquake, so it is vulnerable to earthquakes. more sexual. Therefore, it is necessary to provide a shock absorber for supporting electrical equipment to protect the electrical equipment from adverse effects caused by earthquakes.

The existing shock absorbers are difficult to meet the requirements of pillar electrical equipment due to the following problems: 1. The energy consumption mechanism of the shock absorber is single, the anti-seismic effect is poor, the energy consumption capacity cannot meet the equipment requirements, and the reliability is low. 2. The appropriate trigger force is not set according to the specific equipment's own weight and anti-seismic ability, and it is difficult to meet the requirement that the shock absorber does not operate when there is no or small earthquake, and when the magnitude of the earthquake threatens the safety of the equipment, it can fully consume energy to make it shock-absorbing Sufficient to protect pillar electrical equipment. 3. The installation layout of the shock absorber is unreasonable, and it is difficult for the shock absorber to exert its performance. 4. After the earthquake, the internal structure of the shock absorber is not easy to reset, and the shock absorber needs to be replaced, which increases the cost of use and workload, and affects the operation of the power station.

For this reason, it is necessary to provide a shock absorber for pillar electrical equipment, so as to improve the shock resistance of the electrical equipment, reduce the use cost of the shock absorber, and improve work efficiency.

Contents of the invention

The above-mentioned problems to be solved are achieved by the following technical solutions: provide a shock absorber for pillar-type electrical equipment, the shock absorber includes a cylinder tube arranged coaxially from the outside to the inside, and a sliding shock absorber assembly , a disc spring and a piston rod, fixed caps arranged at both ends of the cylinder,

The sliding damping assembly is arranged at both ends of the disc spring,

The sliding shock-absorbing assembly is provided with memory alloy shock-absorbing assemblies arranged circularly along the axis of the cylinder.

The fixed cover is arranged concentrically with the cylinder and has an H-shaped longitudinal section. One end is provided with an annular boss connected to the cylinder through a connecting piece, and the other end is connected to the sliding reducer. shock components connected;

Both ends of the cylindrical cover are provided with circular grooves, and the circular grooves are respectively an outer groove connected with an adjustment plate and an inner groove forming a moving channel of the piston rod.

The sliding shock absorbing assembly is arranged between the disc spring and the fixed cover, and includes a sliding wedge movably connected with the inner cavity of the cylinder, a friction wedge arranged in the sliding wedge, and a friction wedge arranged in the a lock nut between the fixed cover and the sliding wedge;

The lock nut is provided with threads connected to the piston rod for the inner cavity.

The sliding wedge is a cylindrical structure of a wedge-shaped cavity; the wedge-shaped cavity is composed of two coaxially opposite cylindrical wedge-shaped cavities, the upper and lower end surfaces of the wedge-shaped cavity are circular, and the two wedge-shaped cavities The above-mentioned end faces are connected.

The friction wedge includes an inner friction wedge and an outer friction wedge oppositely arranged; the inner friction wedge is connected with the disc spring;

Both the internal friction wedge and the external friction wedge are cylindrical cavities with a wedge-shaped structure, and the upper and lower end surfaces of the wedge-shaped structure are both circular;

The cylindrical cavity is a movement channel of the piston rod.

The inner friction wedge and the outer friction wedge are respectively embedded in the cylindrical wedge-shaped cavity of the sliding wedge, and a gap is provided between the upper end surface of the inner friction wedge and the outer friction wedge.

The memory alloy damping assembly includes fixing clips respectively arranged on the adjusting plate and the sliding wedge, and memory alloy wires arranged on the fixing clips along the axial direction of the cylinder.

The adjustment plate is provided with an adjustment bolt perpendicular to its surface, and the lower end of the adjustment bolt is connected with the fixed cover.

The memory alloy shock-absorbing assembly is provided with an even number of not less than 8, and the strain of the memory alloy wire is 2% to 7%;

The disc spring is composed of not less than two disc springs arranged coaxially, and the compression amount thereof is 1-3 mm.

When the pillar-type electrical equipment is affected by the earthquake and is displaced, when the piston rod is pushed from the outside of the cylinder to the inside, the sliding damping assembly arranged on the right side of the piston rod will rub against the inner cavity of the cylinder, and the memory alloy The wires are superelastically deformed, and they together act as a shock absorber; when the piston rod is pushed from the inside of the cylinder to its outside, the sliding shock absorbing assembly 5 arranged on the left side of the piston rod and the inner cavity of the cylinder 2 Friction, and superelastic deformation of the memory alloy wire, they together play a role in shock absorption; thereby reducing the seismic response of the electrical equipment through the friction of the sliding wedge and the superelastic deformation of the memory alloy wire.

Compared with the closest prior art, the technical solution provided by the present invention has the following beneficial effects:

1. The shock absorber provided by this application adopts two shock-absorbing methods, the friction between the sliding shock-absorbing component and the inner cavity of the cylinder, and the superelastic deformation of the memory alloy wire. It meets the equipment requirements and has high reliability.

2. The shock absorber provided by this application adopts an appropriate trigger force set according to the specific equipment's own weight, height and shock resistance, so that the shock absorber will not act when there is no shock or a small earthquake, and it will fully respond when the magnitude is enough to threaten the safety of the equipment The purpose of energy dissipation and shock absorption is to protect pillar electrical equipment.

3. The shock absorber provided by this application has reasonable installation layout, simple structure, good shock absorption performance and low manufacturing cost.

4. The internal structure of the shock absorber provided by this application can be reset after an earthquake, and the shock absorber does not need to be replaced, which reduces the cost of use and the workload of employees, and will not affect the operation of the power station.

Description of drawings

Fig. 1 is the shock absorber front view that the present invention provides;

Fig. 2 is the sectional view of A-A in Fig. 1 provided by the present invention;

Fig. 3 is a partial sectional view of the shock absorber provided by the present invention;

Fig. 4 is a structural schematic diagram of the sliding damping assembly provided by the present invention;

Fig. 5 is the sectional view of B-B in Fig. 1 provided by the present invention;

Fig. 6 is a sectional view of the cylinder provided by the present invention;

Figure 7 is a sectional view of the fixed cover provided by the present invention;

Fig. 8 is a sectional view of the sliding wedge provided by the present invention;

Fig. 9 is a left view of the sliding wedge provided by the present invention;

Fig. 10 is a sectional view of the regulating plate provided by the present invention;

Fig. 11 is the left side view of the adjustment plate provided by the present invention;

Figure 12 is a sectional view of the internal friction wedge provided by the present invention;

Figure 13 is a front view of the internal friction wedge provided by the present invention;

Figure 14 is a sectional view of the external friction wedge provided by the present invention;

Figure 15 is a front view of the external friction wedge provided by the present invention;

Among them, 1—disc spring, 2—cylinder barrel, 3—piston rod, 4—fixed cover, 5—sliding shock absorbing assembly, 6—memory alloy shock absorbing assembly, 7—adjusting plate, 8—outer groove, 9— Inner groove, 10—sliding wedge, 11—lock nut, 12—inner friction wedge, 13—outer friction wedge, 14—fixed fixture, 15—memory alloy wire, 16—adjusting bolt

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example 1:

As shown in Figures 1 and 2, a shock absorber for pillar electrical equipment, the shock absorber includes a cylinder 2 coaxially arranged from outside to inside, a sliding shock absorbing assembly 5, a disc spring 1 and the piston rod 3, fixed caps 4 arranged at both ends of the cylinder 2,

The sliding damping assembly 5 is arranged at both ends of the disc spring 1,

The sliding shock absorbing assembly 5 is provided with memory alloy shock absorbing assemblies 6 arranged circularly along the axis of the cylinder 2 .

As shown in Fig. 7, Fig. 6 and Fig. 5, the fixed cover 4 is arranged coaxially with the cylinder barrel 2, and the longitudinal section is an H-shaped cylindrical cover. The annular boss connected to the cylinder 2, the other end is connected to the sliding damping assembly 5;

As shown in Figure 10 and Figure 11, the two ends of the cylindrical cover are provided with circular grooves, the circular grooves are respectively the outer groove 8 connected with the adjustment plate 7 and the inner groove 9 forming the moving passage of the piston rod 3 .

As shown in Fig. 4, Fig. 8 and Fig. 9, the sliding damping assembly 5 is arranged between the disc spring and the fixed cover 4, which includes a sliding wedge 10 movably connected with the inner cavity of the cylinder 2 , a friction wedge arranged in the sliding wedge 10 and a locking nut 11 arranged between the fixed cover 4 and the sliding wedge 10;

As shown in FIG. 4 , the inner chamber of the locking nut 11 is provided with threads connected with the piston rod 3 .

The sliding wedge 10 is a cylindrical structure of a wedge-shaped cavity; the wedge-shaped cavity is composed of two coaxially opposite cylindrical wedge-shaped cavities, the upper and lower end surfaces of the wedge-shaped cavity are circular, and the two The upper end faces are connected.

As shown in Figure 4, the friction wedge includes an inner friction wedge 12 and an outer friction wedge 13 oppositely arranged; the inner friction wedge 12 is connected with the disc spring;

As shown in Fig. 12, Fig. 13, Fig. 14 and Fig. 15, the internal friction wedge 12 and the external friction wedge 13 are cylindrical cavities with a wedge-shaped structure, and the upper and lower end surfaces of the wedge-shaped structure are circular;

The cylindrical cavity is a movement channel of the piston rod.

As shown in Figure 4, the inner friction wedge 12 and the outer friction wedge 13 are respectively embedded in the cylindrical wedge-shaped cavity of the sliding wedge 10, and the upper end surface of the inner friction wedge 12 and the outer friction wedge 13 is provided with gap.

As shown in FIG. 3 , the memory alloy damping assembly 6 includes fixing clamps 14 respectively arranged on the adjusting plate 7 and the sliding wedge 10 and fixed clamps 14 arranged on the axial direction of the cylinder 2 . Memory alloy wire 15 on tool 14.

As shown in FIG. 10 and FIG. 11 , the adjusting plate 7 is provided with an adjusting bolt 16 perpendicular to its surface, and the lower end of the adjusting bolt 16 is connected with the fixed cover 4 .

The memory alloy damping assembly 6 is provided with an even number of not less than 8, and the strain of the memory alloy wire 15 is 2% to 7%;

The disc spring 1 is composed of not less than two disc springs coaxially arranged, and the compression amount thereof is 1-3 mm.

When the pillar type electrical equipment is affected by the earthquake and is displaced, when the piston rod is pushed from the outside of the cylinder to its inside, the sliding damping assembly 5 arranged on the right side of the piston rod will rub against the inner cavity of the cylinder 2, and The memory alloy wire undergoes superelastic deformation, and they together play a shock absorbing role; when the piston rod is pushed from the inside of the cylinder to the outside, the sliding shock absorbing assembly 5 arranged on the left side of the piston rod and the cylinder 2 The internal cavity rubs, and the memory alloy wire undergoes superelastic deformation, and they together play a role of shock absorption; thus, the seismic response of the electrical equipment is reduced through the friction of the sliding wedge 10 and the energy consumption of the memory alloy wire's superelastic deformation.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still modify or equivalently replace the specific embodiments of the present invention. , and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the pending application of the present invention.

Claims (9)

1. the vibration damper for pillar class electrical equipment, described vibration damper comprises cylinder barrel (2), slip dampening assembly (5), belleville spring (1) and the piston rod (3) that concentric is from outside to inside arranged, be arranged on the fixed cover (4) at described cylinder barrel (2) two ends, it is characterized in that

Described slip dampening assembly (5) is arranged on described belleville spring (1) two ends,

Described slip dampening assembly (5) is provided with the memory alloy dampening assembly (6) along the rounded arrangement in described cylinder barrel (2) axle center.

2. vibration damper as claimed in claim 1, it is characterized in that, described fixed cover (4) is arrange with described cylinder barrel (2) concentric, longitudinal section is the cylindrical cap of H-shaped, its one end is provided with the annular boss be connected with described cylinder barrel (2) by link, and the other end is connected with described slip dampening assembly (5);

The two ends of described cylindrical cap are provided with circular groove, and described circular groove is respectively the water jacket (8) being connected with regulator plate (7) and the inside groove (9) forming described piston rod (3) moving walkway.

3. vibration damper as claimed in claim 2, it is characterized in that, described slip dampening assembly (5) is arranged between described belleville spring and fixed cover (4), it comprise be flexibly connected with described cylinder barrel (2) inner chamber sliding wedge (10), be arranged on the friction voussoir in described sliding wedge (10) and be arranged on the locking nut (11) between described fixed cover (4) and sliding wedge (10);

Described locking nut (11) is provided with the screw thread be connected with described piston rod (3) for inner chamber.

4. vibration damper as claimed in claim 3, is characterized in that, the cylindrical-shaped structure that described sliding wedge (10) is wedge shape cavity; Described wedge shape cavity is made up of the cylindric wedge shape cavity that two are coaxially oppositely arranged, and the upper and lower end face of described wedge shape cavity is circle, and two described upper-end surfaces are connected.

5. vibration damper as claimed in claim 4, it is characterized in that, described friction voussoir comprises the interior friction voussoir (12) and external friction voussoir (13) that are oppositely arranged; Described interior friction voussoir (12) is connected with described belleville spring;

Described interior friction voussoir (12) and external friction voussoir (13) are the cylindrical chamber of wedge-shaped structure, and the upper and lower end face of described wedge-shaped structure is circle;

Described cylindrical chamber is the moving walkway of described piston rod.

6. vibration damper as claimed in claim 5, it is characterized in that, described interior friction voussoir (12) and external friction voussoir (13) embed in the cylindric wedge shape cavity of sliding wedge (10) respectively, are provided with gap between interior friction voussoir (12) and the upper-end surface of external friction voussoir (13).

7. vibration damper as claimed in claim 6, it is characterized in that, described memory alloy dampening assembly (6) comprises the holding clamp (14) be separately positioned on described regulator plate (7) and sliding wedge (10) and the memory alloy wire (15) be arranged on along described cylinder barrel (2) axial direction on described holding clamp (14).

8. vibration damper as claimed in claim 2, it is characterized in that, described regulator plate (7) is provided with surperficial vertically disposed adjusting bolt (16) with it, and described adjusting bolt (16) lower end is connected with described fixed cover (4).

9. vibration damper as claimed in claim 7, is characterized in that,

Described memory alloy dampening assembly (6) is provided with the even number being not less than 8, and the strain capacity of described memory alloy wire (15) is 2 to percent 7 percent;

The decrement of described belleville spring (1) is 1-3mm.