CN2031571U - 20kv ac high voltage isolating switch specially used for railway - Google Patents
20kv ac high voltage isolating switch specially used for railway Download PDFInfo
- Publication number
- CN2031571U CN2031571U CN 88211282 CN88211282U CN2031571U CN 2031571 U CN2031571 U CN 2031571U CN 88211282 CN88211282 CN 88211282 CN 88211282 U CN88211282 U CN 88211282U CN 2031571 U CN2031571 U CN 2031571U
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- China
- Prior art keywords
- contact
- terminals
- stem
- shell
- conducting rod
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a 20KV alternating-current high voltage isolating switch which is especially used for the railway and is composed of a terminal, an insulator, a current conducting rod, a current conducting contact finger, an operation mechanism, and a terminal and current conducting rod rotation contact mechanism, wherein, the rotation contact mechanism comprises an outer shell, a contact ball and a ball supporting spring; a core column of the terminal is inserted into the outer shell; the contact ball is positioned between the core column and the outer shell. Under the action of the spring, the contact ball can be tightly contacted with the core column and the outer shell; thus, the rolling contact carrying current is formed between the terminal and the current conducting rod. The utility model has the advantages of convenient manufacture and assembly, and long-term operation.
Description
The utility model is the design about the special-purpose 20KV ac high-voltage of railway isolating switch.
The special-purpose ac high-voltage isolating switch of railway, for railway automatic block signal device and railway station field supply line voltage is arranged, non-loaded deciliter usefulness, and can make automatic block signal circuit and electric locomotive power supply high-voltage line close the bar operation, the special-purpose twin props high voltage isolator of a kind of 20KV railway is arranged, by terminals, insulator, conducting rod, the conduction fingertip, operating mechanism, terminals and conducting rod rotate contact mechanism and form, its terminals and conducting rod rotate contact mechanism and comprise shell and contact, the terminals stem stem inserts in the shell, shell connects conducting rod, contact is between terminals stem stem and shell, at any time maintenance contacts with shell and terminals stem stem, when the conducting rod shell rotated under operating mechanism control, contact remained this contact.Known to the designer, at present, the rotation contact mechanism of this high voltage isolator all adopts the mode of line contact, the shape approximation of its contact is in a two back taper rotary body, corresponding cambered surface projection is arranged on terminals stem stem outer surface and the inner surface of outer cover, block contact, make it to rotate with the shell rotation.The problem that adopts the line way of contact to exist is, processing technology complexity, precision are not high, the assembling difficulty, and contact is easy to wear, thereby causes loose contact, rotates consequences such as dumb, often needs repairing the maintenance cost height.
The purpose of this utility model is at the problems referred to above, and the contact of relocating designs a kind of 20KV railway special high-pressure isolating switch for the some contact, and it rotates the contact mechanism simple structure, has integrated abrasion compensation, can use for a long time.
Technology of the present utility model solves key and is: the contact that terminals and conducting rod rotate in the contact mechanism is a spheroid, and it is held up by the fixing helical spring in bottom, and shell is formed by top round table surface and the winding of lower cylindrical face, and the terminals stem stem is a cylinder.
With reference to the accompanying drawings the utility model is described in detail.
Fig. 1 is the utility model twin props ac high-voltage isolating switch schematic diagram.
Fig. 2 is that the utility model terminals and conducting rod rotate the contact mechanism schematic diagram.
As shown in Figure 1, twin props ac high-voltage isolating switch is by terminals 1, insulator 5, conducting rod 6, conduction fingertip 8, operating mechanism (be positioned at the insulator below, do not express among the figure) and terminals and conducting rod rotation contact mechanism---shell 4, spring (see among Fig. 2 10), contact ball 3 compositions.7 are conduction fingertip rainhat among the figure.Conducting rod 6 links together with shell 4 bases, can break away from conduction fingertip 8 under operating mechanism control, rotates 90 ° in opposite directions, becomes two bar parallel shapes.Terminals 1 and stem stem 2 thereof are fixed, and terminals stem stem 2 inserts shells 4, and contact ball 3 is held up by spring, and maintenance contacts with shell and stem stem, make to form rolling between terminals and the conducting rod and contact current-carrying.
As shown in Figure 2, shell 4 is formed by top round table surface and the winding of lower cylindrical face, and terminals stem stem 2 is a cylinder, inserts in the shell, held up to ground by helical spring 10 posts with the ball 3 that contacts between the stem stem at shell, be stuck between shell top and the bottom intersection and the stem stem.The spring bottom connects circular support sheet 9, with screw support chip is fixed on stem stem 2 bottoms, and the spring top connects circular supporting spring 11, and supporting spring is held the contact ball.When shell rotated, the contact ball was done corresponding rolling under spring supporting spring and the effect of shell frictional force, remain and the contacting of shell and terminals stem stem.Spring has the operating pressure of enough picking-up contact balls, its natural height is more than or equal to the shell inner cavity height, when the sphere diameter of contact ball reduces because of wearing and tearing, spring just will contact ball and continue pop-up, to the less round platform upper bottom portion of housing diameter, the contact ball is remained with stem stem closely contact with shell.
The utility model contact ball, spring, shell, conducting rod, terminals and stem stem thereof are all manufactured with good conductive material.
Most preferred embodiment: the 20KV railway Special alternating-current high voltage isolator that designs a kind of twin props type, the contact ball material is aldubra HPb59-1, sphere diameter 10mm, sheathing material is silizin zHs 80-3, the conducting rod material is copper busbar TMy, terminals and core column material thereof are silizin zHs 80-3, spring material is the carbon spring steel wires II, diameter 2.5mm, operating pressure 58.5N, number of total coils 6.5mm, free height 31mm, working depth 23mm, central diameter 23.5mm, spring fixed support sheet and supporting spring material are quality steel plate.
The utility model isolating switch meets the related standards such as GB, IEC, JB after tested, and versatility, interchangeability, inheritance are better, and normalisation coefft reaches more than 80%, makes easy to assemblyly, and volume is little, good airproof performance, and contact is reliable, can long-time running.
Claims (2)
1, the special-purpose isolating switch of a kind of 20KV ac high-voltage railway, the twin props type, by terminals, insulator, conducting rod, the conduction fingertip, operating mechanism, terminals and conducting rod rotate contact mechanism and form, terminals and conducting rod rotate contact mechanism and comprise shell and contact, the terminals stem stem inserts in the shell, shell connects conducting rod, contact is between terminals stem stem and shell, it is characterized in that the contact that terminals and conducting rod rotate in the contact mechanism is a spheroid, it is held up by the fixing helical spring in bottom, shell is formed by top round table surface and the winding of lower cylindrical face, and the terminals stem stem is a cylinder.
2, isolating switch according to claim 1, it is characterized in that spring has the operating pressure of enough picking-up contact balls, its natural height is greater than or equal to the shell inner cavity height, its bottom connects the circular support sheet, with screw support chip is fixed on the stem stem bottom, its top connects circular supporting spring, and supporting spring is held the contact ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211282 CN2031571U (en) | 1988-05-09 | 1988-05-09 | 20kv ac high voltage isolating switch specially used for railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211282 CN2031571U (en) | 1988-05-09 | 1988-05-09 | 20kv ac high voltage isolating switch specially used for railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031571U true CN2031571U (en) | 1989-01-25 |
Family
ID=4844695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88211282 Withdrawn CN2031571U (en) | 1988-05-09 | 1988-05-09 | 20kv ac high voltage isolating switch specially used for railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441943B (en) * | 2007-11-23 | 2010-12-29 | 河南平高电气股份有限公司 | Electric connection device for high voltage isolating switch |
-
1988
- 1988-05-09 CN CN 88211282 patent/CN2031571U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441943B (en) * | 2007-11-23 | 2010-12-29 | 河南平高电气股份有限公司 | Electric connection device for high voltage isolating switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |