CN220963136U - High-insulation-strength insulation transmission pull rod - Google Patents
High-insulation-strength insulation transmission pull rod Download PDFInfo
- Publication number
- CN220963136U CN220963136U CN202322630174.3U CN202322630174U CN220963136U CN 220963136 U CN220963136 U CN 220963136U CN 202322630174 U CN202322630174 U CN 202322630174U CN 220963136 U CN220963136 U CN 220963136U
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- connecting rod
- insulator
- lower connecting
- upper connecting
- rod
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 238000009413 insulation Methods 0.000 title claims abstract description 16
- 239000012212 insulator Substances 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 238000011900 installation process Methods 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to the technical field of vacuum circuit breakers, in particular to an insulating transmission rod pull rod with high insulating strength, which comprises an upper connecting rod, wherein one end of the upper connecting rod is used for being connected with a moving contact of a vacuum arc-extinguishing chamber, and the other end of the upper connecting rod is connected with an insulator; one end of the insulator is connected with the upper connecting rod, and the other end of the insulator is connected with the lower connecting rod; one end of the lower connecting rod is connected with the insulator, and the other end of the lower connecting rod is connected with the transmission mechanism; an elastic element sleeved on the lower connecting rod; the upper connecting rod, the insulator and the lower connecting rod are of an integrated structure, and are coaxially arranged; the positioning structure is arranged on the lower connecting rod and is positioned at one end of the elastic element, which is far away from the insulator, and the positioning structure is used for assisting in positioning the elastic element. The utility model effectively solves the technical problems that in the prior art, metal easily enters an insulator to lose insulativity in the process of installing an insulation transmission pull rod, and the service life of a contact is low due to low breaking speed of the insulation transmission pull rod and a fixed contact.
Description
Technical Field
The utility model relates to the technical field of vacuum circuit breakers, in particular to an insulating transmission pull rod with high insulating strength.
Background
The vacuum circuit breaker is a circuit breaker which uses vacuum state as arc extinction and insulation, and has the advantages of small volume, light weight, suitability for frequent operation, no maintenance for arc extinction and the like. The vacuum circuit breaker mainly comprises a vacuum arc-extinguishing chamber, an operating mechanism, an insulating bracket and the like, wherein the insulating pull rod is mainly used for balancing mechanical force and electric power in the process of opening and closing the vacuum circuit breaker so as to prevent electric arcs from generating and spreading, and therefore, the performance of the insulating pull rod is directly related to whether the vacuum circuit breaker can safely operate.
However, the existing insulation transmission pull rod is of a split structure formed by an insulator, a connecting screw rod pressed in the insulator and a connecting rod, and the situation that peripheral metallic articles or metal scraps enter the insulator easily occurs in the field installation process, if the metallic articles or the metal scraps are not cleaned in time, the insulation of the insulation transmission pull rod is easily lost, and therefore the vacuum circuit breaker cannot safely operate; in addition, when the existing insulating transmission pull rod is disconnected with the moving contact of the vacuum arc-extinguishing chamber, the breaking speed is low, the arcing time of the contact is long, and the service life of the contact is greatly reduced.
Disclosure of utility model
The utility model provides an insulating transmission pull rod with high insulating strength, which solves the technical problems that in the prior art, metal easily enters an insulator to cause the loss of insulativity in the process of installing the insulating transmission pull rod, and the breaking speed of the insulating transmission pull rod and a fixed contact is low to cause the service life of the contact to be low.
In order to solve the problems, the high-insulation-strength insulation transmission pull rod provided by the utility model adopts the following technical scheme:
an insulated transmission tie rod of high dielectric strength comprising:
One end of the upper connecting rod is used for being connected with the moving contact of the vacuum arc-extinguishing chamber, and the other end of the upper connecting rod is connected with the insulator;
One end of the insulator is connected with the upper connecting rod, and the other end of the insulator is connected with the lower connecting rod;
One end of the lower connecting rod is connected with the insulator, and the other end of the lower connecting rod is connected with the transmission mechanism; the elastic element is sleeved on the lower connecting rod and used for providing reliable contact pressure for the contacts during compression and improving breaking speed between the contacts during release;
the upper connecting rod, the insulator and the lower connecting rod are of an integrated structure and are coaxially arranged;
the positioning structure is arranged on the lower connecting rod and is positioned at one end of the elastic element, which is far away from the insulator, and the positioning structure is used for assisting in positioning the elastic element.
The high-insulation-strength insulation transmission pull rod provided by the utility model has the beneficial effects that: by arranging the upper connecting rod, the insulator and the lower connecting rod into an integrally formed structure, the prefabricated assembly is completed before the on-site installation, so that the on-site installation process of the insulated transmission pull rod is simpler and quicker, the condition that metallic articles or metal scraps enter the insulator in the on-site installation process can be avoided, and the time required by the on-site installation is effectively saved; through the elastic element of suit on lower connecting rod, can provide reliable contact pressure for the contact when elastic element compresses, guarantee its reliability of connection, when elastic element releases, utilize the elasticity of spring to break off moving contact and stationary contact fast, reduced the time of arcing, effectively improved the breaking speed between moving contact and the stationary contact. Through the arrangement, the technical problems that in the prior art, metal easily enters an insulator to lose insulativity in the process of installing the insulation transmission pull rod, and the service life of a contact is low due to the fact that the breaking speed of the insulation transmission pull rod and a fixed contact is low are effectively solved.
Further, the upper connecting rod is an upper connecting screw rod, and both ends of the upper connecting rod are provided with thread sections.
Further, the elastic element is a spring, and one end of the spring, which is away from the insulator, is provided with a spring seat.
Further, the positioning structure is a positioning pin.
Further, a first pin hole perpendicular to the axis of the lower connecting rod is formed in the spring seat, a second pin hole extending along the length direction of the lower connecting rod is formed in the lower connecting rod, and a positioning pin is inserted into the first pin hole and the second pin hole so as to position the spring.
Further, the outside of insulator is provided with multilayer umbrella-shaped shirt rim to increase its creepage distance.
Further, the number of the umbrella-shaped skirt edges is four.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present utility model will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the utility model are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:
fig. 1 is a schematic structural diagram of an insulated transmission pull rod with high insulation strength.
Reference numerals illustrate:
1. An upper connecting rod; 2. an insulator; 3. a lower connecting rod; 4. a spring; 5. a spring seat; 6. a first pin hole; 7. an umbrella-shaped skirt.
Detailed Description
The following description of the embodiments of the present utility model will be made more complete and clear to those skilled in the art by reference to the figures of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that the main concept of the high-insulation-strength insulation transmission pull rod provided by the utility model is as follows: the upper connecting rod, the insulator and the lower connecting rod are sequentially connected together and are arranged into an integrally formed structure, and the prefabricated assembly is completed before the on-site installation, so that the condition that metallic articles or metal scraps enter the insulator in the on-site installation process is avoided; the elastic element is sleeved on the lower connecting rod, reliable contact pressure is provided for the contact through compression of the elastic element, and the moving contact and the fixed contact are rapidly broken through elasticity released by the spring, so that arcing time is shortened, breaking speed between the moving contact and the fixed contact is improved, arcing time is shortened, and service life of the contact can be prolonged.
Having described the basic principles of the present utility model, various non-limiting embodiments of the utility model are described in detail below. Any number of elements in the figures are for illustration and not limitation, and any naming is used for distinction only and not for any limiting sense.
The principles and spirit of the present utility model are explained in detail below with reference to several representative embodiments thereof.
The utility model provides an embodiment 1 of an insulating transmission pull rod with high insulating strength:
As shown in fig. 1, the insulating transmission pull rod with high insulating strength comprises an upper connecting rod 1, an insulator 2 and a lower connecting rod 3 which are sequentially connected from left to right, wherein a spring 4 is sleeved on the lower connecting rod 3 as an elastic element.
Specifically, the left end of the upper connecting rod 1 is used for being connected with a moving contact of the vacuum arc-extinguishing chamber, the right end of the upper connecting rod is connected with the left end of the insulator 2, the right end of the insulator 2 is connected with the left end of the lower connecting rod 3, and the spring 4 is sleeved on the lower connecting rod 3; the upper tie rod 1 is an integrally formed structure with the insulator 2 and lower tie rod 3 which has been pre-assembled prior to field installation and has passed quality testing.
In order to facilitate the control of the installation position of the spring 4, the spring 4 is firmly installed, stable in performance and convenient to install, a spring seat 5 is arranged at the right end of the spring 4, a first pin hole 6 perpendicular to the axis of the lower connecting rod 3 is formed in the spring seat 5, a second pin hole (not shown in the figure) extending along the length direction of the lower connecting rod 3 is formed in the lower connecting rod 3, and a positioning pin (not shown in the figure) serving as a positioning structure is inserted into the first pin hole 6 and the second pin hole so as to position the spring 4, and the positioning pin is connected with a transmission mechanism (not shown in the figure).
In addition, the outside of insulator 2 is provided with four layers umbrella-shaped shirt rim 7 to increase creepage distance, thereby increase insulator 2's insulating strength, reduce the possibility that conductive medium link up insulator 2, with the insulating properties of guarantee insulating transmission pull rod.
The working principle of the high-insulation-strength insulation transmission pull rod provided by the utility model is as follows: when the circuit is required to be connected, the positioning pin is moved leftwards in the second pin hole through the transmission mechanism, so that the spring 4 is compressed, and reliable contact pressure is provided for the contact, and the circuit is connected; when the circuit is required to be disconnected, the spring 4 is released through the movable transmission mechanism, the positioning pin moves rightwards in the second pin hole, and the movable contact and the fixed contact are rapidly disconnected under the action of elastic force generated by the release of the spring 4, so that the circuit is disconnected.
Example 2 of the high-insulation-strength insulated transmission pull rod provided by the utility model:
The differences from example 1 are mainly that:
In example 1, the number of umbrella skirts on the outer side of the insulator was four.
In this embodiment, the number of umbrella skirts on the outer side of the insulator is one or more, and the number is determined according to the specific use condition.
Example 3 of the high-insulation-strength insulated transmission pull rod provided by the utility model:
The differences from example 1 are mainly that:
In embodiment 1, both ends of the upper connecting rod have thread segments.
In this embodiment, the end of the upper connecting rod connected to the insulator has no threaded section, which is a smooth straight rod.
It will be further understood by those skilled in the art from the foregoing description of the present specification that terms such as "upper", "lower", "left", "right", "length", "inner", "outer", and the like, which indicate an azimuth or a positional relationship, are based on the azimuth or the positional relationship shown in the drawings of the present specification, are for convenience only in explaining aspects of the present utility model and simplifying the description, and do not explicitly or implicitly indicate that the apparatus or element involved must have the specific azimuth, be constructed and operated in the specific azimuth, and thus the azimuth or positional relationship terms described above should not be interpreted or construed as limiting aspects of the present utility model.
In addition, in the description of the present specification, the meaning of "plurality" means at least two, for example, two, three or more, etc., unless specifically defined otherwise.
Claims (7)
1. An insulated transmission pull rod with high insulation strength, which is characterized by comprising:
One end of the upper connecting rod is used for being connected with the moving contact of the vacuum arc-extinguishing chamber, and the other end of the upper connecting rod is connected with the insulator; one end of the insulator is connected with the upper connecting rod, and the other end of the insulator is connected with the lower connecting rod;
One end of the lower connecting rod is connected with the insulator, and the other end of the lower connecting rod is connected with the transmission mechanism;
the elastic element is sleeved on the lower connecting rod and used for providing reliable contact pressure for the contacts during compression and improving breaking speed between the contacts during release;
the upper connecting rod, the insulator and the lower connecting rod are of an integrated structure and are coaxially arranged;
the positioning structure is arranged on the lower connecting rod and is positioned at one end of the elastic element, which is far away from the insulator, and the positioning structure is used for assisting in positioning the elastic element.
2. The high-dielectric-strength insulated transmission tie rod of claim 1, wherein the upper connecting rod is an upper connecting screw having threaded segments at both ends.
3. The insulated transmission tie of high dielectric strength according to claim 1 or 2, wherein the resilient element is a spring having a spring seat at an end thereof facing away from the insulator.
4. A high dielectric strength insulated transmission tie as claimed in claim 3 wherein said locating structure is a locating pin.
5. The high-insulation-strength insulated transmission pull rod according to claim 4, wherein the spring seat is provided with a first pin hole perpendicular to the axis of the lower connecting rod, the lower connecting rod is provided with a second pin hole extending along the length direction of the lower connecting rod, and the positioning pin is inserted into the first pin hole and the second pin hole to position the spring.
6. The high-insulation-strength insulated transmission tie rod according to claim 1 or 2, wherein the outer side of the insulator is provided with a multi-layered umbrella-shaped skirt to increase the creepage distance thereof.
7. The high dielectric strength insulated transmission tie of claim 6, wherein the number of umbrella skirts is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322630174.3U CN220963136U (en) | 2023-09-26 | 2023-09-26 | High-insulation-strength insulation transmission pull rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322630174.3U CN220963136U (en) | 2023-09-26 | 2023-09-26 | High-insulation-strength insulation transmission pull rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220963136U true CN220963136U (en) | 2024-05-14 |
Family
ID=91021961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322630174.3U Active CN220963136U (en) | 2023-09-26 | 2023-09-26 | High-insulation-strength insulation transmission pull rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220963136U (en) |
-
2023
- 2023-09-26 CN CN202322630174.3U patent/CN220963136U/en active Active
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