CN103811209A - Method and special tool for replacing circuit breaker contacts - Google Patents
Method and special tool for replacing circuit breaker contacts Download PDFInfo
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- CN103811209A CN103811209A CN201410012649.5A CN201410012649A CN103811209A CN 103811209 A CN103811209 A CN 103811209A CN 201410012649 A CN201410012649 A CN 201410012649A CN 103811209 A CN103811209 A CN 103811209A
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Abstract
The invention provides a method and a special tool for replacing circuit breaker contacts and belongs to the power transformer and distribution equipment field. The method comprises integrally assembling a plurality of copper contact blades, a contact support and a fixed spring and enabling the assembly to sleeve the head part of a circuit breaker contact arm; by split assembling and overall installation in place and by virtue of a conical special tool, the fixed spring is evenly stressed in the assembling and placing process of a contact assembly and prevented from local deformation due to uneven stress on the spring, and therefore, even stress on each copper contact blade is guaranteed, and the contact assembly is convenient to assemble and the quality and speed of assembly can be guaranteed; the contact assembly can be assembled and replaced as a whole conveniently and quickly; potential accidents caused by poor contact and heating of the contacts can be avoided, the time for stopping a circuit breaker switchgear for inspection can be greatly shortened, and moreover, the operation labor intensity of a maintenance worker can be reduced and the personal safety of the maintenance worker also can be ensured. The method and the special tool can be widely applied to the repair and maintenance fields of the vacuum circuit breakers.
Description
Technical field
The invention belongs to distribution equipment field, relate in particular to a kind of method for maintaining for contact of breaker and maintenance tool.
Background technology
Primary cut-out is power plant, power transformation most important control and protection equipment in electric power system in one's power.
Existing VB series vacuum type circuit breaker, for trolley type circuit breaker, it is provided with upper and lower moving contact, and (this " moves " is with respect to the corresponding fixed contact arranging in switch cubicle, " fixed contact " described in after, meaning described upper and lower moving contact can " move " with the movement of circuit breaker trolley), between upper and lower moving contact, be provided with the vacuum bubbles (being commonly called as of vacuum interrupter) for being switched on or switched off primary power source loop, in switch cubicle, correspondence is provided with upper and lower fixed contact.
Upper described in it, lower moving contact is (due to upper, the structure of lower moving contact is identical, therefore be designated hereinafter simply as moving contact) upper with corresponding setting in switch cubicle, lower fixed contact (being designated hereinafter simply as fixed contact) position matches and opening direction arranges in opposite directions, when in circuit breaker trolley is pushed into switch cubicle, service position is in place, fixed contact in switch cubicle inserts in the moving contact that circuit breaker is corresponding, make " upper entering and lower leaving " (mean high voltage source and enter circuit breaker by high voltage bus through upper contact head, from circuit breaker, contact exports outlet cable to) a major loop realize the mechanical connection of electric loop, now by " combined floodgate " or " separating brake " button of operating breaker, described vacuum bubbles is switched on or switched off under the driving of combined floodgate/brake separating mechanism, can control trolley type circuit breaker and realize major loop " connection " or "off" in circuit implication.
Wherein, the critical component of described moving contact is contact assembly.
The contact assembly structure of existing VB series vacuum type moving contact of breaker as shown in Figures 1 to 4, its structure is by the structure of the single copper contact sheet of plurality of copper contact blade 2(as shown in Figure 2) be placed on two groups of contact supporting 3-1,3-2, outward by two groups totally four fixing spring 4-1,4-2 fixed, scribble conductive silver layer on the surface of copper contact sheet to improve its electric conductivity.
The contact assembly of above-mentioned whole group, inlay card be assemblied in circuit breaker contact arm 1(contact arm structure as shown in Figure 1) on, described in it, the head of contact of breaker arm 1 is provided with a ring-type location notch 1-1 and head annular projection 1-3, is also provided with location hole 1-2 on the end face of contact arm head.
In the first and end of copper contact sheet (in Fig. 2 headed by the right-hand member of copper contact sheet, left end is end) be respectively arranged with first, second spring fixed gap 2-3,2-4, in the first and end of described copper contact sheet, correspondence is provided with contact projection 2-2 and positioning convex 2-1 respectively.
Owing to being provided with positioning convex (shown in Figure 2) at the end of copper contact sheet, it just in time embeds the ring-type location notch 1-1 interior (shown in Figure 1) of contact arm, add location/support and the first group of pressure contraction that fixing spring 4-1 is inside of the first contact supporting 3-1, whole contact assembly is just securely fixed in the front end of contact arm.
When in circuit breaker trolley is pushed into switch cubicle, " service position " is in place, the left-hand end of the fixed contact (not shown) contact assembly from Fig. 3 or Fig. 4 in switch cubicle is inserted in described moving contact, under the contact projection 2-2 of copper contact sheet head end and the acting in conjunction of second group of fixing spring 4-2, mineralization pressure formula close contact between dynamic and static contact, thereby the connection of a major loop of formation.
Due to the arc burning in burning and the normal course of operation of equipment, along with the increase of circuit breaker on-line operation time, can cause the damage on copper contact sheet surface on moving contact, cause the contact resistance between itself and fixed contact to increase; Or, because copper contact sheet is for a long time by rated current, its heating effect makes two groups of described totally four fixing spring temperature distortions, and elasticity reduces, and then have influence on the contact between aforementioned copper contact sheet and fixed contact, easily cause the loose contact between heating or dynamic and static contact.So, in daily repair and maintenance process, once find that copper contact sheet damages and the situation of camber of spring, just must change it.
For the moving contact of said structure, the installation steps of regulation are first the first contact supporting 3-1 to be sleeved in contact arm 1 now, again plurality of copper contact blade (is had to 15 conventionally, succinctly only draw 3 for picture in figure) be arranged in the ring-type location notch of contact arm, finally by successively two groups of four spring fittings being got on.
According to above-mentioned steps, change the copper contact sheet in a contact arm, need three to four skilled maintenance mans to coordinate and carry out work, first will after all copper contact sheet marshallings, be placed on contact supporting, for copper contact sheet is not hung down from contact supporting, generally at the head end (being the right-hand end of contact assembly in Fig. 2) of copper contact sheet, second group of fixing spring 4-2 is first installed, the end of plurality of copper contact blade is now under the pressure-acting of second group of fixing spring, can outwards open as " trumpet flower " bursting forth, (be the end of aforesaid copper contact sheet by one to two staff by the openend of " trumpet flower ", be the left-hand end of contact assembly in Fig. 2) aim at the ring-type location notch of contact arm, press with strength all copper contact sheets, until described plurality of copper contact blade by tubaeform become cylindrical, and by this shape of force retaining, other one to two staff provokes the spring screwdriver that is arranged in each copper contact sheet head end (right-hand member of Fig. 2) and fiddle with, progressively be moved to the left, and cover is loaded onto remaining two fixing springs, until four fixing springs are all in place in corresponding spring fixed gap, the replacing end-of-job of whole copper contact sheet group.
Because the thrust of fixing spring is huge, in the time that installation exercise needs personnel's coordinated transposition, often can there is operator's hand and be jammed, the industrial accident of even bleeding; Meanwhile, use that screwdriver is fiddled with and mobile spring, often cause the local deformation of spring, make the plurality of copper contact blade discontinuity on contact rack, cause described contact assembly monolithic conductive inhomogeneous, contact is bad, heating, has formed again potential accident potential.
How can under the prerequisite of assembling quality, quickly and easily contact assembly be changed guaranteeing, also relate to and shorten the time that killer switch equipment state out of service overhauls and reduce the economic loss problem that electric substation's outlet is stopped power supply.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of replacing method and specific purpose tool of contact of breaker, it adopts in vitro assembling, the mode of Integral in-position, both facilitated the assembling of sets of contacts, can guarantee again assembling quality and speed, can ensure operator's safety, also can guarantee under the prerequisite of assembling quality, quickly and easily contact assembly is assembled and integral replacing, can greatly shorten the time that killer switch equipment state out of service overhauls, reduce the economic loss that electric substation's outlet is stopped power supply.
Technical scheme of the present invention is: a kind of replacing method that contact of breaker is provided, comprise plurality of copper contact blade, contact supporting and fixing spring are assembled into one, and be sleeved on contact of breaker arm head portion, wherein, described contact supporting comprises first, second contact supporting, described fixing spring comprises first, second group fixing spring, described copper contact sheet is respectively arranged with the breach of fixing spring in its first and end, in the first and end of described copper contact sheet, correspondence is provided with contact projection and positioning convex respectively, it is characterized in that:
The spring housing of described the first fixing spring group is contained in to the first position, contact supporting place on a workbench;
Copper contact sheet described in first is inserted between described spring and the first contact supporting, the end of this copper contact sheet is inserted in the locating notch on the first contact supporting, and described spring is snapped in the breach of copper contact sheet end fixing spring in place;
On the first contact supporting, be on the position at diagonal angle with described first copper contact sheet in place, second copper contact sheet inserted between described spring and the first contact supporting, the end of this copper contact sheet is inserted in the locating notch on the first contact supporting, and described spring is snapped in the breach of copper contact sheet end fixing spring in place;
Between the head end of described first, second sheet copper contact sheet, place the second described contact supporting, the head end of first, second sheet copper contact sheet is inserted in the corresponding locating notch on the second contact supporting;
So sequentially all copper contact sheets are inserted in the locating notch on first, second contact supporting, and described spring is snapped in the breach of each copper contact sheet end fixing spring, form contact assembly semi-finished product;
Wherein, the circular open ends that each copper contact sheet end surrounds forms the half-finished end of contact assembly, and the circular open ends that each copper contact sheet head end surrounds forms the half-finished head end of contact assembly;
The truncated cone that one longitudinal cross-section is antiparallelogram is set, one cylinder matching with the location hole diameter of described contact arm head is set in the bottom of truncated cone, one shaft-like handle is set at the top of truncated cone, forms the replacing specific purpose tool of contact of breaker;
Described replacing specific purpose tool is inserted from the half-finished end of described contact assembly, till being initially located in stress to described spring;
To be loaded with the half-finished replacing specific purpose tool of contact assembly and move to the head of described contact of breaker arm, horizontal positioned, by the corresponding described cylinder location hole that inserts described contact arm head; Make the bottom of described truncated cone and the end contact of described contact arm head;
The contact assembly semi-finished product along continuous straight runs of changing on specific purpose tool will be sleeved on, push to contact arm cephalad direction entirety, the positioning convex correspondence of the each copper contact sheet of described contact assembly semi-finished product end is snapped in the ring-type location notch of described contact arm head in place;
Described replacing specific purpose tool is extracted out in the half-finished head end opening of described contact assembly;
Successively the spring housing of described the second fixing spring group is filled in the breach of each copper contact sheet head end fixing spring of contact assembly semi-finished product to the contact assembly of complete;
Described replacing method is by vitro assembling, the mode of Integral in-position, realize the integral replacing of described contact of breaker, both facilitated the assembling of contact assembly, can guarantee again quality and the speed of assembling, can ensure operator's safety, under the prerequisite of assurance assembling quality, quickly and easily contact assembly be assembled and integral replacing.
Concrete, first, second fixing spring group described in it comprises respectively two springs.
The base diameter of truncated cone described in it, is equal to or greater than the external diameter of described contact arm head.
The base diameter of truncated cone described in it, the internal diameter of first, second contact supporting described in being less than.
First, second contact supporting described in it is circular ring plate, in the outer circumference of described circular ring plate, be evenly equipped with the locating notch equating with described copper contact sheet quantity, the head end of described each copper contact sheet, inserts and is fixed in the corresponding locating notch of described the second contact supporting circular ring plate outer circumference respectively; The end of described each copper contact sheet, inserts and is fixed in the corresponding locating notch of described the first contact supporting circular ring plate outer circumference respectively.
Replacing scheme described in the technical program is utilized the truncated cone of described replacing specific purpose tool, make described spring uniform stressed in contact assembly assembling and process in place, avoid spring to cause local deformation because of unbalance stress, guarantee that by this copper contact sheet is stressed evenly described in each, avoid contact bad, heating, form potential accident potential.
The present invention also provides a kind of replacing specific purpose tool using in above-mentioned contact of breaker replacing method, it is characterized in that: described replacing specific purpose tool is a truncated cone, one cylinder matching with the location hole diameter of described contact arm head is set in the bottom of truncated cone, one shaft-like handle is set at the top of truncated cone, forms the replacing specific purpose tool of contact of breaker.
Concrete, the base diameter of truncated cone described in it, is equal to or greater than the external diameter of described contact arm head.
The base diameter of truncated cone described in it, the internal diameter of first, second contact supporting described in being less than.
The replacing specific purpose tool of the technical program utilizes the isosceles trapezoid cross section structure of described truncated cone, by the end of the described plurality of copper contact blade that has been set with fixing spring, equably to external expansion, make the internal diameter in the garden that plurality of copper contact blade end positioning convex forms, be greater than the diameter of described contact arm head, be convenient to described positioning convex and cross the head annular projection of described contact arm, embed smoothly described ring-type location notch in place, described contact assembly integral assembling is fixed on to the head of described contact arm, to avoid described spring to cause local deformation because of unbalance stress, guarantee that by this each described copper contact sheet is stressed evenly.
Compared with the prior art, advantage of the present invention is:
1. adopt replacing specific purpose tool to match, by in vitro assembling, the mode of Integral in-position, realize the integral replacing of contact of breaker, both facilitate the assembling of contact assembly, can guarantee again quality and the speed of assembling, and can ensure operator's safety, under the prerequisite of assurance assembling quality, can assemble and integral replacing contact assembly quickly and easily;
2. utilize the truncated cone of specific purpose tool, make spring uniform stressed in contact assembly assembling and process in place, avoid spring to cause local deformation because of unbalance stress, guarantee that by this copper contact sheet is stressed evenly described in each, avoid contact bad, heating, form potential accident potential;
3. by contact assembly is changed easily and efficiently, can greatly shorten the time that killer switch equipment state out of service overhauls, reduce the economic loss that electric substation's outlet is stopped power supply, also can reduce the operation labor intensity of service worker, guarantee the personal safety in its operation process.
Accompanying drawing explanation
Fig. 1 is the structural representation of contact arm head;
Fig. 2 is the structural representation of monolithic copper contact sheet;
Fig. 3 is the structural representation that removes existing contact assembly and contact arm head after spring;
Fig. 4 is the structural representation of existing contact assembly and contact arm head after suit upper spring;
Fig. 5 is the structural representation that the present invention changes specific purpose tool;
Fig. 6 is the position relationship schematic diagram of copper contact sheet and first, second contact supporting while being not yet set with upper spring;
Fig. 7 is the position relationship schematic diagram that cover is loaded onto copper contact sheet and first, second contact supporting after one group of spring;
Fig. 8 is that contact assembly semi-finished product are sleeved on the structural representation of changing on specific purpose tool;
Fig. 9 is the schematic diagram of changing specific purpose tool insertion contact arm;
Figure 10 is the schematic diagram that contact assembly semi-finished product push contact arm head;
Figure 11 extracts the schematic diagram of changing specific purpose tool out after contact assembly semi-finished product enter ring-type location notch;
Figure 12 is the structural representation that replacing specific purpose tool is extracted rear contact assembly semi-finished product and contact arm head completely out.
In figure, 1 is contact arm, and 1-1 is ring-type location notch, and 1-2 is location hole, 1-3 is the head annular projection of contact arm, 2 is copper contact sheet, and 2-1 is positioning convex, and 2-2 is contact projection, 2-3,2-4 are first, second spring fixed gap, 3-1,3-2 are first, second contact supporting, and 4-1,4-2 are first, second fixing spring group, and 5 is truncated cone, 5-1 is cylinder, and 5-2 is shaft-like handle.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
In Fig. 1, the head of contact of breaker arm 1 is provided with a ring-type location notch 1-1 and head annular projection 1-3, is also provided with location hole 1-2 on the end face of contact arm head.
In Fig. 2, in the first and end of copper contact sheet (in figure headed by the right-hand member of copper contact sheet, left end is end) be respectively arranged with first, second spring fixed gap 2-3,2-4, in the first and end of described copper contact sheet, correspondence is provided with contact projection 2-2 and positioning convex 2-1 respectively.
In Fig. 3, between plurality of copper contact blade 2, be provided with two groups of contact supportings, the first contact supporting 3-1 is wherein arranged on the end of copper contact sheet, and the second contact supporting 3-2 is arranged on the head end of copper contact sheet.
First, second above-mentioned contact supporting is circular ring plate, in the outer circumference of circular ring plate, be evenly equipped with the locating notch equating with copper contact sheet quantity, the head end of each copper contact sheet, inserts respectively/is fixed in the corresponding locating notch of described the second contact supporting circular ring plate outer circumference; The end of described each copper contact sheet, inserts respectively/is fixed in the corresponding locating notch of described the first contact supporting circular ring plate outer circumference.
In Fig. 4, one group of complete contact assembly structure as shown in the figure, its structure is to be placed on two groups of contact supportings by plurality of copper contact blade 2, its overall excircle by two groups totally four fixing spring 4-1,4-2 fixed, scribble conductive silver layer on the surface of copper contact sheet to improve its electric conductivity.
In Fig. 5, the replacing specific purpose tool of the technical program comprises a truncated cone 5, and a cylinder 5-1 who matches with the location hole 1-2 diameter of contact arm head is set in the bottom of truncated cone, and a shaft-like handle 5-2 is set at the top of truncated cone.
The replacing method of the technical program is first contact assembly to be assembled to (" in vitro " herein refers to and leave breaker body) in vitro, recycling is changed specific purpose tool contact assembly entirety is pushed in place, realize the integral replacing of described contact of breaker assembly, it had both facilitated the assembling of contact assembly, can guarantee again quality and the speed of assembling, can ensure operator's safety, under the prerequisite of assurance assembling quality, quickly and easily contact assembly be changed.
Concrete, as shown in Fig. 6～Figure 12.
In Fig. 6, the end of described a slice or several pieces copper contact sheets is inserted in the locating notch on the first contact supporting, the head end of described copper contact sheet is inserted in the corresponding locating notch on the second contact supporting.
Copper contact sheet in one group of contact assembly has 15 conventionally, in figure for picture succinctly only drawn 3, lower with.
In Fig. 7, spring housing is contained in to the periphery of each copper contact sheet, and snaps in the spring fixed gap of each copper contact sheet end in placely, form contact assembly semi-finished product.
The circular open ends that each copper contact sheet end surrounds forms the half-finished end of contact assembly (i.e. lower end in figure), and the circular open ends that each copper contact sheet head end surrounds forms the half-finished head end of contact assembly (i.e. upper end in figure).
In Fig. 8, contact assembly semi-finished product are sleeved on and are changed on specific purpose tool 5, till being initially located in stress to described spring 4-1.
Its truncated cone of changing specific purpose tool is inserted from the half-finished end of contact assembly, and its cylinder is positioned at the half-finished end side of contact assembly, and its shaft-like handle is positioned at the half-finished first end-side of contact assembly.
In Fig. 9, will be loaded with the half-finished replacing specific purpose tool 5 of contact assembly and move to the head of described contact of breaker arm 1, horizontal positioned, by the corresponding cylinder location hole that inserts contact arm head; Make the bottom of truncated cone and the end contact of contact arm head.
In Figure 10, the contact assembly semi-finished product along continuous straight runs of changing on specific purpose tool will be sleeved on, push to contact arm cephalad direction entirety, utilize the isosceles trapezoid cross section structure of truncated cone, the end of plurality of copper contact blade of fixing spring will be set with, equably to external expansion, make the internal diameter in the garden that plurality of copper contact blade end positioning convex forms, be greater than the diameter (that is diameter of the head annular projection of aforementioned contact arm) of contact arm head, so that the positioning convex of each copper contact sheet is crossed the head annular projection of contact arm, embed smoothly described ring-type location notch in place.
In Figure 11, continue to push to contact arm cephalad direction entirety being sleeved on the contact assembly semi-finished product along continuous straight runs of changing on specific purpose tool, the positioning convex correspondence of the each copper contact sheet of described contact assembly semi-finished product end is snapped in the ring-type location notch of described contact arm head in place; Then, will change specific purpose tool extracts out in the half-finished head end opening of contact assembly.
In Figure 12, change specific purpose tool extracts out completely in the half-finished head end opening of contact assembly, positioning convex described in whole contact assembly semi-finished product on each copper contact sheet embeds in the ring-type location notch of contact arm head completely, under the pressure-acting of the first fixing spring group spring, spacer ferrule fastens the head in contact arm.
Finally, successively the spring housing of described the second fixing spring group is filled in the breach of each copper contact sheet head end fixing spring of contact assembly semi-finished product, forms the complete contact assembly in as shown in Figure 4.
Replacing method described in technical solution of the present invention is by vitro assembling, the mode of Integral in-position, realize the integral replacing of contact of breaker, its assembling process had both facilitated the assembling of contact assembly, can guarantee again quality and the speed of assembling, be conducive to ensure operator's safety, guaranteeing, under the prerequisite of assembling quality, can to carry out integral replacing to contact assembly quickly and easily.
Concrete, its first, second fixing spring group comprises respectively two springs.
The base diameter of its truncated cone, is equal to or greater than the external diameter of described contact arm head.
The base diameter of its truncated cone, the internal diameter of first, second contact supporting described in being less than.
In the step of concrete assembling and replacing, also can adopt another kind of execution mode: first that two springs are light by the outside of the first contact supporting of putting under the state not stressing, lever up gently spring with copper contact sheet, make copper contact sheet under the pressure-acting of spring, be fixed in the groove of contact supporting, and according to the order of sequence all the other copper contact sheets be fixed on contact supporting; To change specific purpose tool inserts from the half-finished end of contact assembly, spring stress is opened, the half-finished end of contact assembly forms horn mouth, half-finished contact assembly horn mouth is aimed to the ring-type detent of contact arm, then replacing specific purpose tool is extracted, contact assembly semi-finished product are just fixed in contact arm like a cork.Finally by after two spring fittings of the second fixing spring group, end-of-job.
Owing to having used special taper aid, the holddown spring that is sleeved on afterbody can evenly be opened, be convenient to the installation of copper contact sheet and fix, specific purpose tool is pyramid type simultaneously, while opening spring, make its uniform stressed, can not cause camber of spring, avoid spring because unbalance stress causes local deformation, guarantee that by this copper contact sheet is stressed evenly described in each, thereby avoid contact bad, heating, form potential accident potential.
Owing to having used special taper aid, the thrust while having dissolved spring fitting, greatly reduces labour intensity, has also reduced human injury simultaneously.
After by this mounting auxiliary, greatly improve operating efficiency, only 1 staff of need just can easily complete the integral replacing work of contact of breaker group, and the whole replacing time shortened to 8 minutes from 30 minutes.
Technical scheme of the present invention is the technological achievement that field service workman carries out " five is little " innovation and creation activity in real work.
Because the present invention is by the auxiliary installation special tool with tapering, adopt in vitro assembling, the mode of Integral in-position, both facilitated the assembling of sets of contacts, can guarantee again assembling quality and speed, avoid spring to cause local deformation because of unbalance stress, can ensure operator's safety, also can guarantee under the prerequisite of assembling quality, convenient, quickly contact assembly is changed, greatly improve operating efficiency, also reduced human injury's possibility simultaneously, reduce labour intensity, can greatly shorten the time that killer switch equipment state out of service overhauls, be conducive to reduce the economic loss that electric substation's outlet is stopped power supply.
The present invention can be widely used in maintenance, the maintenance field of vacuum circuit-breaker.
Claims (10)
1. the replacing method of a contact of breaker, comprise plurality of copper contact blade, contact supporting and fixing spring are assembled into one, and be sleeved on contact of breaker arm head portion, wherein, described contact supporting comprises first, the second contact supporting, described fixing spring comprises first, second group of fixing spring, described copper contact sheet is at its head, end is respectively arranged with the breach of fixing spring, at the head of described copper contact sheet, end, correspondence is provided with contact projection and positioning convex respectively, at the head of described contact of breaker arm, being provided with a ring-type location is characterized in that:
The spring housing of described the first fixing spring group is contained in to the first position, contact supporting place on a workbench;
Copper contact sheet described in first is inserted between described spring and the first contact supporting, the end of this copper contact sheet is inserted in the locating notch on the first contact supporting, and described spring is snapped in the breach of copper contact sheet end fixing spring in place;
On the first contact supporting, be on the position at diagonal angle with described first copper contact sheet in place, second copper contact sheet inserted between described spring and the first contact supporting, the end of this copper contact sheet is inserted in the locating notch on the first contact supporting, and described spring is snapped in the breach of copper contact sheet end fixing spring in place;
Between the head end of described first, second sheet copper contact sheet, place the second described contact supporting, the head end of first, second sheet copper contact sheet is inserted in the corresponding locating notch on the second contact supporting;
So sequentially all copper contact sheets are inserted in the locating notch on first, second contact supporting, and described spring is snapped in the breach of each copper contact sheet end fixing spring, form contact assembly semi-finished product;
Wherein, the circular open ends that each copper contact sheet end surrounds forms the half-finished end of contact assembly, and the circular open ends that each copper contact sheet head end surrounds forms the half-finished head end of contact assembly;
The truncated cone that one longitudinal cross-section is antiparallelogram is set, one cylinder matching with the location hole diameter of described contact arm head is set in the bottom of truncated cone, one shaft-like handle is set at the top of truncated cone, forms the replacing specific purpose tool of contact of breaker;
Described replacing specific purpose tool is inserted from the half-finished end of described contact assembly, till being initially located in stress to described spring;
By being loaded with the half-finished replacing specific purpose tool of contact assembly and moving to the head of described contact of breaker arm, be horizontally disposed with, by the corresponding described cylinder location hole that inserts described contact arm head; Make the bottom of described truncated cone and the end contact of described contact arm head;
The contact assembly semi-finished product along continuous straight runs of changing on specific purpose tool will be sleeved on, push to contact arm cephalad direction entirety, the positioning convex correspondence of the each copper contact sheet of described contact assembly semi-finished product end is snapped in the ring-type location notch of described contact arm head in place;
Described replacing specific purpose tool is extracted out in the half-finished head end opening of described contact assembly;
Successively the spring housing of described the second fixing spring group is filled in the breach of each copper contact sheet head end fixing spring of contact assembly semi-finished product to the contact assembly of complete;
Described replacing method is by vitro assembling, the mode of Integral in-position, realize the integral replacing of described contact of breaker, both facilitated the assembling of contact assembly, can guarantee again quality and the speed of assembling, can ensure operator's safety, under the prerequisite of assurance assembling quality, quickly and easily contact assembly be assembled and integral replacing.
2. according to the replacing method of contact of breaker claimed in claim 1, it is characterized in that first, second described fixing spring group comprises respectively two springs.
3. according to the replacing method of contact of breaker claimed in claim 1, it is characterized in that the base diameter of described truncated cone, be equal to or greater than the external diameter of described contact arm head.
4. according to the replacing method of contact of breaker claimed in claim 1, it is characterized in that the base diameter of described truncated cone, be less than the internal diameter of described first, second contact supporting.
5. according to the replacing method of contact of breaker claimed in claim 1, it is characterized in that first, second described contact supporting is circular ring plate, in the outer circumference of described circular ring plate, be evenly equipped with the locating notch equating with described copper contact sheet quantity, the head end of described each copper contact sheet, inserts and is fixed in the corresponding locating notch of described the second contact supporting circular ring plate outer circumference respectively; The end of described each copper contact sheet, inserts and is fixed in the corresponding locating notch of described the first contact supporting circular ring plate outer circumference respectively.
6. according to the replacing method of contact of breaker claimed in claim 1, replacing scheme described in it is characterized in that is utilized the truncated cone of described replacing specific purpose tool, make described spring uniform stressed in contact assembly assembling and process in place, avoid spring to cause local deformation because of unbalance stress, guarantee that by this copper contact sheet is stressed evenly described in each, avoid contact bad, heating, form potential accident potential.
7. the replacing specific purpose tool using in contact of breaker replacing method described in claim 1, is characterized in that:
Described replacing specific purpose tool is a truncated cone, one cylinder matching with the location hole diameter of described contact arm head is set in the bottom of truncated cone, one shaft-like handle is set at the top of truncated cone, forms the replacing specific purpose tool of contact of breaker.
8. according to replacing specific purpose tool claimed in claim 7, it is characterized in that the base diameter of described truncated cone, be equal to or greater than the external diameter of described contact arm head.
9. according to replacing specific purpose tool claimed in claim 7, it is characterized in that the base diameter of described truncated cone, be less than the internal diameter of described first, second contact supporting.
10. according to replacing specific purpose tool claimed in claim 7, it is characterized in that described replacing specific purpose tool utilizes the isosceles trapezoid cross section structure of described truncated cone, by the end of the described plurality of copper contact blade that has been set with fixing spring, equably to external expansion, make the internal diameter in the garden that plurality of copper contact blade end positioning convex forms, be greater than the diameter of described contact arm head, be convenient to described positioning convex and cross the head annular projection of described contact arm, embed smoothly described ring-type location notch in place, described contact assembly integral assembling is fixed on to the head of described contact arm, to avoid described spring to cause local deformation because of unbalance stress, guarantee that by this each described copper contact sheet is stressed evenly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012649.5A CN103811209B (en) | 2014-01-10 | 2014-01-10 | A kind of replacing options of contact of breaker and specific purpose tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012649.5A CN103811209B (en) | 2014-01-10 | 2014-01-10 | A kind of replacing options of contact of breaker and specific purpose tool |
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| CN103811209A true CN103811209A (en) | 2014-05-21 |
| CN103811209B CN103811209B (en) | 2016-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006393A (en) * | 2015-07-24 | 2015-10-28 | 宁波耀华电气科技有限责任公司 | Device for assembling plum-blossom-shaped contact |
| CN109449808A (en) * | 2018-11-06 | 2019-03-08 | 郑州华力信息技术有限公司 | Switchgear moving contact spring replaces new exclusive equipment |
| CN114121528A (en) * | 2021-11-23 | 2022-03-01 | 广东电网有限责任公司 | Moving contact mounting tool |
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| CN200944355Y (en) * | 2006-09-10 | 2007-09-05 | 浙江纪元电气集团有限公司 | Special mounting tools for binding movable contact of breaker |
| CN201364836Y (en) * | 2009-03-09 | 2009-12-16 | 湖南京电开关厂 | Tooling die for movable contact of vacuum circuit breaker |
| CN201483440U (en) * | 2009-08-25 | 2010-05-26 | 广州东芝白云电器设备有限公司 | Tulip contact assembling and disassembling tool |
| CN201586958U (en) * | 2009-12-15 | 2010-09-22 | 上海市电力公司 | Switch spring replacing tool |
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| CN200944355Y (en) * | 2006-09-10 | 2007-09-05 | 浙江纪元电气集团有限公司 | Special mounting tools for binding movable contact of breaker |
| CN201364836Y (en) * | 2009-03-09 | 2009-12-16 | 湖南京电开关厂 | Tooling die for movable contact of vacuum circuit breaker |
| CN201483440U (en) * | 2009-08-25 | 2010-05-26 | 广州东芝白云电器设备有限公司 | Tulip contact assembling and disassembling tool |
| CN201586958U (en) * | 2009-12-15 | 2010-09-22 | 上海市电力公司 | Switch spring replacing tool |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006393A (en) * | 2015-07-24 | 2015-10-28 | 宁波耀华电气科技有限责任公司 | Device for assembling plum-blossom-shaped contact |
| CN109449808A (en) * | 2018-11-06 | 2019-03-08 | 郑州华力信息技术有限公司 | Switchgear moving contact spring replaces new exclusive equipment |
| CN114121528A (en) * | 2021-11-23 | 2022-03-01 | 广东电网有限责任公司 | Moving contact mounting tool |
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|---|---|
| CN103811209B (en) | 2016-03-30 |
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