CN202695342U - Joint structure of insulating pull rod - Google Patents
Joint structure of insulating pull rod Download PDFInfo
- Publication number
- CN202695342U CN202695342U CN 201220268590 CN201220268590U CN202695342U CN 202695342 U CN202695342 U CN 202695342U CN 201220268590 CN201220268590 CN 201220268590 CN 201220268590 U CN201220268590 U CN 201220268590U CN 202695342 U CN202695342 U CN 202695342U
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- pull rod
- joint
- pull bar
- joints
- insulated tension
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Abstract
The utility model provides a joint structure of an insulating pull rod, belonging to the technical field of power switch equipment, and aiming at solving the problems that due to the matching way of the existing insulating pull rod and joints of the insulating pull rod, the size and the appearance are enlarged after the insulating pull rod is assembled with the joints, the electric safety distance is reduced, and the safety and the reliability of the equipment can be reduced; the pull rod is low in tensile strength and torsional strength; the transmission accuracy is influenced by abrasion, and the like. The joint structure of the insulating pull rod comprises a straight tube-shaped pull rod; two joints are respectively arranged at the two ends of the pull rod; the joints are in cylindrical shapes and are embedded into the tube-shaped inner circumference of the pull rod along the axial direction; and the outer walls of the pull rod and the joints are respectively and correspondingly provided with a mounting hole in a communicating way, and a shaft pin can be inserted into each mounting hole. According to the joint structure of the insulating pull rod, the original outer sleeve connecting way is improved into an inner circumference insert embedding connecting way, so that the whole size is reduced, the insulation distance is enlarged relatively, and the safety of the whole equipment can be effectively improved; and the tensile strength and the torsional strength of the pull rod are remarkably improved, so that the transmission is stable, and the action efficiency is improved.
Description
Technical field
The utility model belongs to the power switchgear technical field, relates to the joint design of a kind of tools for live working, particularly a kind of insulated tension pole.
Background technology
Circuit breaker is the representative equipment of motor switch, and it plays important safeguard protection effect in Circuits System, is the important composition link of can not ignore.Wherein primary cut-out claims again high-voltage switch gear, is mounted in a kind of circuit protection device on the High-Voltage Electrical Appliances, and it is one of important electric elements.It not only can cut off or the closed high circuit in no-load current and load current, overload electric current and short circuit current are cut off in and the effect by relay protection when system breaks down.It has quite perfect arc extinguishing structure and enough cutout abilities, can be divided into: oil circuit breaker (bulk-oil circuit-breaker, oil-minimum breaker), sulfur hexafluoride breaker (SF6 circuit breaker), vacuum circuit-breaker, compressed-air circuit breaker etc.
The vitals of primary cut-out has contact, arc control device, wire outlet seat, transmission device etc., wherein the transmission device transmission that act as the action commands such as separating brake, combined floodgate, ground connection is carried out, and the reliability of transmission device and accuracy become in realizing short circuit or path and one of necessarily require thus; The degree of transmission device insulating capacity also becomes one of electrical safety influencing factor of device interior simultaneously.
Insulated tension pole and joint thereof are that the part of transmission device forms structure, at present available technology adopting belt lacing mode as shown in Figure 1 and not belt lacing mode, and mainly there is following problem in it:
1, belt lacing mode, outer bell and spigot joint 2 ' structural change external dimensions and the profile of insulated tension pole 1 ', its size is increased, affected thus the even distribution of electric field, reduced the distance of electric clearance, reduced the safety and reliability of equipment;
2, belt lacing mode not, the tension of insulated tension pole 1 ' and anti-twist intensity can not get ensureing, and in use, because long term wear between the hole on pivot pin and the insulated tension pole 1 ', cause the gap to become large, affect accurate transmission, increased the security risk of equipment operation.
The utility model content
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of connected mode by week embedding in the joint, reduces the fitted position of pull bar, thereby increases the safe space, improves electrical security; Increase simultaneously the joint design of the insulated tension pole of pull bar intensity, moment of torsion.
The purpose of this utility model can realize by following technical proposal: a kind of joint design of insulated tension pole, comprise the pull bar that is straight-tube shape, described pull bar two ends are provided with joint, it is characterized in that, described joint is cylindric and is nested into vertically week in the tubular of above-mentioned pull bar, is corresponding the offering be used to the installing hole that plugs pivot pin of connection on the outer wall of described pull bar and joint.
Pull bar in the joint design of this insulated tension pole has two ends and the extraneous circular channel that communicates, and joint can plug installation by the end passage port thus.All diameter specifications coupling that matches in the outer circumference diameter specification of joint and the pull bar makes both the rear formation that is nested contact wall against setting.Pull bar is positioned on the periphery wall of end offers installing hole, and the diameter dimension of the installing hole offered of its diameter dimension and joint periphery wall equates, both installing holes after assembling is coincide to be communicated with.Pivot pin plugs and is assemblied in the installing hole, and itself and pull bar are vertical setting.The bottom of joint offers air vent hole, makes SF6 gas enter the inner gas-insulated that forms of pull bar by this air vent hole.This structure is used in the motor switch equipment, and it be the part-structure in the transmission device, and after the assembling, the joint at pull bar two ends has uncovered for what connect, power transmission shaft plug vertically uncovered in, and establish grafting by pivot pin vertical and locate.
In the joint design of above-mentioned insulated tension pole, the inner that described joint plugs above-mentioned pull bar has back cover.Installing hole is opened on the perisporium of joint, and pivot pin plugs and is assemblied in the installing hole thus, and wherein section is arranged in the cavity that perisporium and back cover by joint form.
In the joint design of above-mentioned insulated tension pole, the uncovered outer end that described joint plugs above-mentioned pull bar has the gear edge, and described gear along with the circumferential end interruption-forming of above-mentioned pull bar against contacting.The gear of joint is established along being vertical outwards rollover with its perisporium, and be loop shaped, and its width equates with the cylindrical shell thickness of pull bar, thus in joint plugs the end that is assemblied in pull bar after week, its gear is along the corresponding applying pull bar port outside, make both form assembling and positioning, guarantee simultaneously to be opened in the vertically identical connection in position of installing hole on both perisporiums.
In the joint design of above-mentioned insulated tension pole, be provided with cementing layer between described joint periphery wall and the pull bar internal perisporium.Cementing layer is connected both are bonding for evenly smearing adhesive.
In the joint design of above-mentioned insulated tension pole, described joint adopts the steel material to make.The steel material has good intensity and hardness, the tension of Effective Raise pull bar and anti-twist intensity.
Compared with prior art, the joint design of this insulated tension pole originally overcoat connected mode is improved to slotting embedding connected mode of interior week, and is further perfect to the part detailed structure simultaneously, makes to the utlity model has following advantage:
1, inserts overall dimensions after the embedding mode has reduced the pull bar assembling interior week, saved thus the installing space that is arranged in electric equipment, thereby insulated tension pole docking ground housing and alternate insulation distance have relatively been widened, namely improved over the ground and alternate puncture voltage, significantly improved the electrical safety coefficient, whole electric equipment fail safe is strengthened, optimize its service behaviour;
2, the joint after the architecture advances is beneficial to tensile strength and the transverse strength of raising rod, namely increases intensity and the moment of torsion of pull bar, make thus in the transmission running stressed more evenly, rationally, Effective Raise transmission efficiency, transmission stability, extension device useful life.
Description of drawings
Fig. 1 is the cross section structure schematic diagram of prior art.
Fig. 2 is the cross section structure schematic diagram of the joint design of this insulated tension pole.
Fig. 3 is the assembling cross section structure schematic diagram of the joint design of this insulated tension pole.
Among the figure, 1, pull bar; 2, joint; 2a, back cover; 2b, gear edge; 3, installing hole; 4, pivot pin; 5, power transmission shaft.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figures 2 and 3, the joint design of this insulated tension pole comprises pull bar 1 and the joint 2 that is positioned at pull bar 1 two ends.
The outer circumference diameter specification of joint 2 and the pull bar 1 interior all diameter specifications coupling that matches, joint 2 stretch into its back cover 2a end week in the end of pull bar 1 as the inner, make after interpolation is embedded thus between the two wall contact against.Simultaneously on joint 2 periphery walls and pull bar 1 internal perisporium, evenly smear adhesive, form the bonding cementing layer that is connected between both contact-making surfaces.The opening end of joint 2 outwardly, and its stretch to determine depth location after, the loop shaped gear of its port along 2b just with the circumferential end interruption-forming of pull bar 1 against contacting, namely keep off along all end faces of the circle of 2b medial surface applying pull bar 1.Joint 2 gear is along the location of 2b against making the axially accurate true position of inserting that setting-in joins, and guarantees simultaneously to be opened in respectively pull bar 1 and is after assembling with installing hole 3 on the joint 2 that face-off is identical to be communicated with.The bottom of joint 2 offers air vent hole, makes SF6 gas enter the pull bar 1 inner gas-insulated that forms by this air vent hole.
This structure is used in the motor switch equipment, it is the part-structure in the transmission device, when combination is installed, by two power transmission shafts 5 corresponding pull bar 1 two ends one by one, and plug vertically in outwardly uncovered of joint 2, until stretch into the depth location inconsistent with joint 2 back cover 2a, installing hole 3 corresponding connections on the pin-and-hole of offering on the power transmission shaft 5 thus and the pull bar 1, pivot pin 4 plugs the installing hole 3 of above-mentioned formation connection and runs through successively pull bar 1, joint 2 and power transmission shaft 5, makes power transmission shaft 5 form clamping with pull bar 1 and is connected.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used housing pull bar 1; Joint 2; Back cover 2a; Gear is along 2b; Installing hole 3; Pivot pin 4; Power transmission shaft 5 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (5)
1. the joint design of an insulated tension pole, comprise the pull bar that is straight-tube shape, described pull bar two ends are provided with joint, it is characterized in that, described joint is cylindric and is nested into vertically week in the tubular of above-mentioned pull bar, is corresponding the offering be used to the installing hole that plugs pivot pin of connection on the outer wall of described pull bar and joint.
2. the joint design of insulated tension pole according to claim 1 is characterized in that, the inner that described joint plugs above-mentioned pull bar has back cover.
3. the joint design of insulated tension pole according to claim 1 is characterized in that, the uncovered outer end that described joint plugs above-mentioned pull bar has the gear edge, and described gear along with the circumferential end interruption-forming of above-mentioned pull bar against contacting.
4. according to claim 1 and 2 or the joint design of 3 described insulated tension poles, it is characterized in that, be provided with cementing layer between described joint periphery wall and the pull bar internal perisporium.
5. according to claim 1 and 2 or the joint design of 3 described insulated tension poles, it is characterized in that, described joint adopts the steel material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268590 CN202695342U (en) | 2012-06-08 | 2012-06-08 | Joint structure of insulating pull rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268590 CN202695342U (en) | 2012-06-08 | 2012-06-08 | Joint structure of insulating pull rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202695342U true CN202695342U (en) | 2013-01-23 |
Family
ID=47550921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220268590 Expired - Fee Related CN202695342U (en) | 2012-06-08 | 2012-06-08 | Joint structure of insulating pull rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202695342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006713A1 (en) * | 2016-07-05 | 2018-01-11 | 江苏神马电力股份有限公司 | Insulation pull bar |
-
2012
- 2012-06-08 CN CN 201220268590 patent/CN202695342U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006713A1 (en) * | 2016-07-05 | 2018-01-11 | 江苏神马电力股份有限公司 | Insulation pull bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20160608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |