CN202732947U - Sealing and protecting structure for operation bearing base for high voltage isolator switch and grounding switch - Google Patents
Sealing and protecting structure for operation bearing base for high voltage isolator switch and grounding switch Download PDFInfo
- Publication number
- CN202732947U CN202732947U CN201220421485.8U CN201220421485U CN202732947U CN 202732947 U CN202732947 U CN 202732947U CN 201220421485 U CN201220421485 U CN 201220421485U CN 202732947 U CN202732947 U CN 202732947U
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- sealing
- elastic contact
- contact sealing
- bearing base
- high voltage
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Abstract
The utility model discloses a sealing and protecting structure for an operation bearing base for a high voltage isolator switch and a grounding switch. The sealing and protecting structure comprises a bearing base, an operation lever and an elastic contact sealing assembly, wherein the bearing base and the operation lever are connected by the elastic contact sealing assembly; the inner side of the elastic contact sealing assembly is fixed on the upper end surface of the bearing base; and the outer side of the elastic contact sealing assembly is pressed on the lower surface of the operation lever. The sealing and protecting structure disclosed by the utility model effectively isolates the surrounding atmospheric environment from the sealed inner cavity of the bearing base, so that the components inside the bearing base are protected from being affected by external environment. The sealing and protecting structure for the bearing base disclosed by the utility model is simple and easy to apply, economical and reliable, convenient to assemble. Moreover, no special requirements are needed for the protected body structure, influence to operating torque can be ignored, and long-term operation reliability and maintenance-free performance of the product can be satisfied.
Description
[technical field]
The utility model relates to the high voltage electric switch field, particularly a kind of high voltage isolator and the earthed switch structure of service axis bearing sealing protection.
[background technique]
Along with the fast development of power grid construction, the important measurement index that the high reliability of High-Voltage Electrical Appliances operation and non-maintaining property have become Electrical Safety.Owing to reasons such as the inner incrustation of service axis bearing, corrosion and Sealing are aging, often can cause open type high-voltage isolating switch and earthed switch operating difficulties, even refuse minute to refuse to close.The main cause of its generation be by present open type high-voltage isolating switch and earthed switch generally adopt, need two kinds of methods and the structure of the service axis bearing sealing protection of internal protection to cause: 1. labyrinth sealing, referring to Fig. 1, operate lever 2 lower surfaces weld an annulus, forming road, palace, labyrinth with bearing support 1 outer surface seals, this structure can not increase the operational torque of operate lever 2, but by road, palace, labyrinth the ambient atmosphere environment is linked to each other with bearing support 1 closed cavity, prevent that rainwater from entering respond well, can not prevent from effectively but that sand and dust from entering with condensation accumulated water to produce; 2. "O"-ring sealing, referring to Fig. 2, at operate lever 2 and 1 of bearing support seal groove is set, install "O"-ring 5 additional, sealing effect is good, but because the "O"-ring 5 general quality of rubber materials that adopt, and to carry out a certain amount of contact precompression (being generally 0.2 to 0.5 millimeter) during sealing, produce a larger frictional force when causing operate lever 2 rotation and between "O"-ring, particularly contact pre compressed magnitude excessive (gap is because parts machining assembly error and surface treatment are difficult to accurately control between operate lever and bearing support), after "O"-ring ageing hardening or the excessive wear, this frictional force can the serious rotation that hinders between the relative bearing support of operate lever.
[model utility content]
The purpose of this utility model is to provide a kind of high voltage isolator and the earthed switch structure of service axis bearing sealing protection; this structure has the sealing protection function admirable, and is simple in structure, easy to assembly; without specific (special) requirements, can ignore the characteristics such as impact on operational torque to protected body structure.
To achieve these goals, the utility model adopts following technological scheme:
A kind of high voltage isolator and earthed switch comprise bearing support, operate lever and Elastic Contact Sealing with the structure of service axis bearing sealing protection; Connect by the Elastic Contact Sealing between bearing support and the operate lever; Elastic Contact Sealing inboard is fixed on the bearing support upper-end surface, and the Elastic Contact Sealing outside is pressed in the operate lever lower surface.
The utility model further improves and is: the Elastic Contact Sealing is a circle structure, and the annulus section is the serpentine shape of horizontal positioned.
The utility model further improves and is: the material of Elastic Contact Sealing is teflon.
The utility model further improves and is: Elastic Contact Sealing inboard is provided with " U " type draw-in groove, should be stuck on the upper-end surface of bearing support by " U " type draw-in groove.
The utility model further improves and is: Elastic Contact Sealing and operate lever contact position are from the outward extending circular arc cantilever structure of " U " type draw-in groove.
The utility model further improves and is: be provided be used to the rolling bearing that supports described operate lever in the bearing base inner chamber of bearing support.
The utility model further improves and is: described circular arc cantilever structure is pressed in the operate lever lower surface by resiliently deformable.
Compared with prior art, the beneficial effects of the utility model are:
By installing Elastic Contact Sealing 3 additional at bearing support 1 and 2 of operate levers, realized that ambient atmosphere environment and bearing support 1 closed cavity effectively isolate, protected bearing support 1 inner components to avoid external environment influence; Utilize 2 inherent structure sizes of bearing support 1 and operate lever and characteristics, appropriate design Elastic Contact Sealing 3 under the prerequisite that satisfies the sealing demand, is accomplished protected body structure can to ignore on the impact of operational torque without specific (special) requirements.The service axis bearing sealed protective structure that the utility model is realized is simple, and is economical reliable, easy to assembly, without specific (special) requirements, and can ignore impact on operational torque to protected body structure, can satisfy reliability and the non-maintaining property of product long-time running.
[description of drawings]
Fig. 1 is the structural representation that the service axis bearing adopts the labyrinth sealing protection;
Fig. 2 is the structural representation that the service axis bearing adopts the "O"-ring sealing protection;
Fig. 3 is the structural representation of the utility model service axis bearing sealing protection;
Fig. 4 a, Fig. 4 b are the structural representation of the utility model Elastic Contact Sealing; Wherein Fig. 4 a is the sectional view of Elastic Contact Sealing, and Fig. 4 b is the plan view of Elastic Contact Sealing;
Fig. 5 is the fundamental diagram of the utility model Elastic Contact Sealing;
Wherein: 1, bearing support; 2, operate lever; 3, Elastic Contact Sealing; 4, rolling bearing; 5, "O"-ring; 6, bearing base inner chamber; Plane, outer ledge place under A, the Elastic Contact Sealing nature; Plane, outer ledge place after B, the whole assembling of Elastic Contact Sealing; Elastic Contact Sealing outer flat compressed amount of deformation before and after C, the assembling.
[embodiment]
Below in conjunction with the drawings and specific embodiments the utility model is described in further details:
To shown in Figure 5, the utility model provides a kind of high voltage isolator and earthed switch with the structure of service axis bearing sealing protection, comprising: bearing support 1, operate lever 2, Elastic Contact Sealing 3 and rolling bearing 4 referring to Fig. 3; Wherein, described rolling bearing 4 is arranged in the bearing support 1, and bearing support 1 is used for support operation lever 2, connects by Elastic Contact Sealing 3 between bearing support 1 and the support operation lever 2; Elastic Contact Sealing 3 inboards are fixed on bearing support 1 upper-end surface, and Elastic Contact Sealing 3 outsides are pressed on operate lever 2 lower surfaces by resiliently deformable.
For realizing the isolation of service axis bearing 1 inner space and ambient atmosphere environment, protecting inner space and component to avoid external environment influence, need between bearing support 1 upper-end surface and operate lever 2 lower surfaces, install Elastic Contact Sealing 3 additional, carry out object and cut off.
Because function needs, to can realize relative rotary motion between bearing support 1 and the operate lever 2, for this reason both with Elastic Contact Sealing 3 between can not be fixed simultaneously and be connected.
1. adopt to be fixedly connected with between bearing support 1 and Elastic Contact Sealing 3, " U " type draw-in groove by Elastic Contact Sealing 3 inboards are provided with is fixed on bearing support 1 upper-end surface, realizes static sealing; 2. between operate lever 2 and Elastic Contact Sealing 3, adopt and be slidingly connected, allow the outside of Elastic Contact Sealing 3 contact with operate lever 2 lower surfaces with certain pressure, the needs of inside and outside chamber isolation both can have been satisfied, can satisfy again the needs of mutual rotational slide, realize dynamic seal (packing), and the generation of contact be when putting into bearing support 1 by operate lever 2 rigging position cause that operate lever 2 lower surfaces compressing Elastic Contact Sealing 3 outsides are subjected to displacement, Elastic Contact Sealing 3 since the resiliently deformable resilience produce.
Because required seal space is rotary structure, so Elastic Contact Sealing 3 is designed to a thin wall circular, ring cross-section is the serpentine shape of horizontal positioned.Its inboard is fixed on bearing support 1 upper-end surface, and the outside contacts with operate lever 2 lower surfaces with certain pressure.The wearing and tearing that relative movement causes during for the surface friction drag that reduces to produce because of above-mentioned pressure and operation, and satisfying long-time running to the requirement of Elastic Contact Sealing 3 reliabilities, Elastic Contact Sealing 3 is selected and is used extensively, the polytetrafluoroethylmaterial material manufacturing of stable performance, wear-resistant, selflubricating.Simultaneously, for reducing because of bearing support 1 with operate lever 2 gaps because the cantilever structure that parts machining assembly error and surface treatment varied in thickness on the impact of contact between operate lever 2 and the Elastic Contact Sealing 3, structurally are designed to Elastic Contact Sealing 3 and operate lever 2 contact position to stretch out, arc transition, front end upwarp.
During installation, because Elastic Contact Sealing 3 inboards are fixed on bearing support 1 upper-end surface, the outside is pressed on operate lever 2 lower surfaces by certain resiliently deformable, and contact can (have certain contact between the two by relative sliding between the two, this pressure is that rigging position causes operate lever 2 lower surfaces compressing Elastic Contact Sealing 3 outsides to be subjected to displacement to produce when putting into bearing support 1 by operate lever 2, this pressure can satisfy the required contact of seal request, can ignore simultaneously operate lever 2 and the impact of 3 frictional force of Elastic Contact Sealing on operational torque because of its generation), realize reliable static sealing and dynamic seal (packing) between bearing support 1 and the operate lever 2.
By at increase Elastic Contact Sealing 3 between fixing bearing support 1 and the operate lever 2 that rotates to it; make ambient atmosphere environment and 6 isolation of bearing support 1 bearing base inner chamber; the component of effectively having protected bearing support 1 inside to need protection are avoided external action such as rolling bearing 4.The service axis bearing sealing protection method that the utility model is realized is simple, and is economical reliable, easy to assembly, without specific (special) requirements, and can ignore impact on operational torque to protected body structure, can satisfy reliability and the non-maintaining property of product long-time running.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by claims of submitting to.
Claims (7)
1. a high voltage isolator and earthed switch is characterized in that with the structure of service axis bearing sealing protection, comprise bearing support (1), operate lever (2) and Elastic Contact Sealing (3); Connect by Elastic Contact Sealing (3) between bearing support (1) and the operate lever (2); Elastic Contact Sealing (3) inboard is fixed on bearing support (1) upper-end surface, and Elastic Contact Sealing (3) outside is pressed in operate lever (2) lower surface.
2. a kind of high voltage isolator according to claim 1 and earthed switch is characterized in that with the structure of service axis bearing sealing protection, and Elastic Contact Sealing (3) is a circle structure, and the annulus section is the serpentine shape of horizontal positioned.
3. a kind of high voltage isolator according to claim 1 and earthed switch is characterized in that with the structure of service axis bearing sealing protection, and the material of Elastic Contact Sealing (3) is teflon.
4. a kind of high voltage isolator according to claim 2 and earthed switch are with the structure of service axis bearing sealing protection, it is characterized in that, Elastic Contact Sealing (3) inboard is provided with " U " type draw-in groove, should be stuck on the upper-end surface of bearing support (1) by " U " type draw-in groove.
5. a kind of high voltage isolator according to claim 4 and earthed switch are with the structure of service axis bearing sealing protection, it is characterized in that, Elastic Contact Sealing (3) is from the outward extending circular arc cantilever structure of " U " type draw-in groove with operate lever (2) contact position.
6. a kind of high voltage isolator according to claim 5 and earthed switch are with the structure of service axis bearing sealing protection, it is characterized in that, be provided be used to the rolling bearing that supports described operate lever (2) (4) in the bearing base inner chamber (6) of bearing support (1).
7. a kind of high voltage isolator according to claim 5 and earthed switch is characterized in that with the structure of service axis bearing sealing protection, and described circular arc cantilever structure is pressed in operate lever (2) lower surface by resiliently deformable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220421485.8U CN202732947U (en) | 2012-08-23 | 2012-08-23 | Sealing and protecting structure for operation bearing base for high voltage isolator switch and grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220421485.8U CN202732947U (en) | 2012-08-23 | 2012-08-23 | Sealing and protecting structure for operation bearing base for high voltage isolator switch and grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732947U true CN202732947U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220421485.8U Expired - Lifetime CN202732947U (en) | 2012-08-23 | 2012-08-23 | Sealing and protecting structure for operation bearing base for high voltage isolator switch and grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307729A (en) * | 2013-06-28 | 2013-09-18 | 南京平欧空调设备有限公司 | Air purification handling unit with arc-shaped corner tenon |
| CN107731608A (en) * | 2017-11-08 | 2018-02-23 | 北京北开电气股份有限公司 | A kind of high-voltage isulation multi-turn drive mechanism |
-
2012
- 2012-08-23 CN CN201220421485.8U patent/CN202732947U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307729A (en) * | 2013-06-28 | 2013-09-18 | 南京平欧空调设备有限公司 | Air purification handling unit with arc-shaped corner tenon |
| CN107731608A (en) * | 2017-11-08 | 2018-02-23 | 北京北开电气股份有限公司 | A kind of high-voltage isulation multi-turn drive mechanism |
| CN107731608B (en) * | 2017-11-08 | 2024-04-12 | 北京北开电气股份有限公司 | High-voltage insulation multi-circle transmission structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |