CN205789557U - The core body device of shunting switch - Google Patents
The core body device of shunting switch Download PDFInfo
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- CN205789557U CN205789557U CN201620469877.XU CN201620469877U CN205789557U CN 205789557 U CN205789557 U CN 205789557U CN 201620469877 U CN201620469877 U CN 201620469877U CN 205789557 U CN205789557 U CN 205789557U
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Abstract
The core body device of shunting switch belongs to T & D Technology field, particularly relates to the core body device of a kind of shunting switch.This utility model provides the core body device of the shunting switch that a kind of contact performance is good, cost of manufacture is low.This utility model includes vertical supporting axle, vertical main shaft, crossed strip, movable contact spring, vertical axle sleeve, horizontal bearing pin and vertical axis, its structural feature bearing pin is through the first cross through hole on main shaft, described axle sleeve is around main shaft, described bearing pin two ends are placed in the second cross through hole of axle sleeve both sides, and described movable contact spring is placed on axle sleeve outer ring and is blocked by the second cross through hole；Being cased with described spring on the bearing pin of main shaft side, spring one end offsets with main shaft, and the spring other end offsets with sleeve lining；The upper end of described main shaft is connected with the lower end of described axle, and the lower end of main shaft is connected with the upper end of described support shaft.
Description
Technical field
This utility model belongs to T & D Technology field, particularly relates to the core body device of a kind of shunting switch.
Background technology
In sub-connecting switch of transformer industry, the entitled a kind of tapping switch movable contact component having guide frame of the electromechanical integration integrating apparatus of bamboo shape shunting switch, the mounting or dismounting plate lock of shunting switch and patent is prior art background of the present utility model.
Patent No. CN104681316.A, patent name is " the electromechanical integration integrating apparatus of shunting switch ", primary structure is that several dish movable contact springs are integrated into one mechanism, synchronize that bridging switching is respectively connected with from each tap of transformer coil different two adjacent determine contact, turning circuit, change gear, adjusts voltage；nullConduit string is worn some dish movable contact springs and is imposed axial pre tightening force by lock ring，With latch fitting, conduit is positioned with lock ring again，Just dish movable contact spring basis switching mechanism is formed，Reach property and the synchronicity of gear change while contact，But different two adjacent determine contact due to what several dish movable contact springs in electromechanical integration integrating apparatus synchronized that bridging switching is respectively connected with from each tap of transformer coil，Some movable contact spring minimum numbers in this device are ten movable contact springs，Combination of two is five pairs of movable contact springs，And these five pairs of movable contact springs are controlled to carry out gear change by four springs，Four spring devices respectively and each two of above-below direction，So every pair movable contact spring contacts the most only by these four springs with determine contact，And due to mismachining tolerance makes each movable contact spring can not be just the same，And contacting is a strict concept，As long as centre has a small gap to be all belonging to non-contacting，So will there are the movable contact spring of indivedual group can not completely attach to and determine contact，The greatest problem that may cause is exactly that temperature rise can improve，From being unable to meet its electric property.
Patent No. CN104392851.A, patent name is " the mounting or dismounting plate lock of shunting switch ", mainly use inserting or pull out of lock key just to open gate just as a key and be assembled to position in pushing the insulation crust cavity of shunting switch after the main shaft of shunting switch and subsidiary cored structure exquisite composition outside thereof, the straightedge of pilot hole to be the most also installed at switch internal for realizing core-pulling function, that is altogether minimum seven kinds of parts are formed by six kinds of parts to realize whole switch straightedge to be increased one part of this function and mounting or dismounting plate lock itself, and except straightedge, surprisingly remaining is all metal parts, metal parts is the most will increase point of discharge or discharge position inside transformator, it is so pernicious for high-voltage switch gear.
Patent No. CN200820057796.4, patent name is " a kind of tapping switch movable contact component having guide frame ", a kind of tapping switch movable contact component having guide frame, including moving contact rack, movable contact rod, roller and roller bearing pin, its moving contact rack is positioned at the caudal of described moving contact rack pilot hole and is provided with guide surface, and the afterbody of movable contact rod also has corresponding guide surface in this section of bar portion.The position limiting structure that this utility model slips out in the rear end of movable contact rod arranges the moving contact rack pilot hole prevented described in movable contact rod.This utility model ensures that movable contact rod only moves axially in described moving contact rack pilot hole, without around own axis, thus can ensure that moving contact roller moves as pure rolling on conducting ring, ensure that shunting switch is that roller operation is smooth and easy in switching, it is to there are 3 defects the biggest that this patent is analyzed in general orientation: first is that movable contact spring only has roller at the support section of axial direction, belong to and a little support, there is radial wobble problem in movable contact spring, it is clear that is unstable a kind of structure；Second be roller why can support movable contact spring be under the elastic force effect of spring realize, but technique finds that spring can lose efficacy along with the increase of the time of use after have passed through actual application, so from figure it is known that after spring failure, movable contact spring will no longer be worked by roller, so unique strong point just loses effect, movable contact spring so can be caused to depart from moving contact rack and be likely to be slipped to bottom switch or other positions, movable contact spring is that the problem that metal parts directly causes is discharged exactly, and this is problem the most fatal in transformer industry；3rd is that this assembly integral part does not possess core-pulling function, want to take out it is first necessary to pulled down by one end insulation board by this part from switch, owing to determining it is interference fit between the insulation sleeve on contact and insulation board, dismantle and install extremely difficult, workload so can be made to be greatly increased.
Summary of the invention
This utility model is aiming at the problems referred to above, it is provided that the core body device of the shunting switch that a kind of contact performance is good, cost of manufacture is low.
For achieving the above object, this utility model adopts the following technical scheme that, this utility model includes vertical supporting axle, vertical main shaft, crossed strip, movable contact spring, vertical axle sleeve, horizontal bearing pin and vertical axis, its structural feature bearing pin is through the first cross through hole on main shaft, described axle sleeve is around main shaft, described bearing pin two ends are placed in the second cross through hole of axle sleeve both sides, and described movable contact spring is placed on axle sleeve outer ring and is blocked by the second cross through hole；Being cased with described spring on the bearing pin of main shaft side, spring one end offsets with main shaft, and the spring other end offsets with sleeve lining；The upper end of described main shaft is connected with the lower end of described axle, and the lower end of main shaft is connected with the upper end of described support shaft.
As a kind of preferred version, the centrage of the first cross through hole described in the utility model intersects with the axial line of main shaft, the axial line of axle sleeve respectively；Described movable contact spring and axle sleeve matched in clearance.
As another kind of preferred version, axle sleeve described in the utility model is cylindric axle sleeve, and movable contact spring is circular movable contact spring；The lower end outer wall of axle sleeve is provided with annular projection laterally, and described second cross through hole is arranged on the vertical middle part of axle sleeve, and the lower end of movable contact spring connects with annular projection upper surface, and the inwall of movable contact spring connects with the outer wall of axle sleeve.
As another kind of preferred version, the first cross through hole described in the utility model, spring, movable contact spring, axle sleeve, bearing pin be combined as multiple, uniform along main axis length direction.
As another kind of preferred version, the upper end of main shaft described in the utility model interlocks with the lower end of axle, the lower end of main shaft interlocks with the upper end of support shaft, axle and support shaft are positioned at the same side of main shaft, the upper end of main shaft and the lower end of the axle portion that interlocks is fixed by upper horizontal bearing pin and is fixed with upper mounted plate, and the lower end of main shaft and the upper end of the support shaft portion that interlocks is fixed by lower horizontal bearing pin and fixed with bottom plate；Upper mounted plate is placed in vertical frame upper end and fixes with vertical frame, and bottom plate is placed in vertical frame lower end and fixes with vertical frame.
As another kind of preferred version, support shaft lower end described in the utility model is spherical axle.
As another kind of preferred version, axle upper end described in the utility model is connected through the first clamping plate middle through-hole in the middle part of the most first plate with operating mechanism, and described spherical axle is placed in the arcuate groove in the middle part of horizontal tailgate；Laterally first plate and laterally multiple vertically determine contact around described axle is uniform between tailgate circumference.
As another kind of preferred version, main shaft described in the utility model is cylinder or cuboid or square metallic conductor.
Secondly, bearing pin cross section described in the utility model is square or rectangle or oval metal conductor, and described first cross through hole is and the hole of bearing pin cross section correspondingly-shaped.
It addition, support shaft described in the utility model, main shaft, spring, axle sleeve, bearing pin, axle are metalwork, movable contact spring is copper fitting.
This utility model beneficial effect.
Electric property can not be fully met the integrating apparatus of electromechanical integration and upgrade to a kind of both having possessed mechanical performance and be also provided simultaneously with the core body device of electric property by this utility model.
This utility model is spring, movable contact spring, axle sleeve, the integrative-structure of bearing pin composition, this version is that a spring controls a movable contact spring, when converting gear, enable to each movable contact spring can bridge two simultaneously and adjacent determine contact, achieve movable contact spring and determine property while contact to adjacent two that switch in gear, making contact performance reach optimal, contact resistance tends to minimum state, well solves topmost " temperature rise " problem in switch electric property.
This utility model bearing pin not only acts as connection movable contact spring and the effect of axle sleeve, also act as the guide effect to spring, when carrying out pressure regulation gearshift, bearing pin can shift to next gear under the axial rotation effect of main shaft, so spring is all the time with bearing pin integrally, also just carry out gear shift operation simultaneously, enable spring to reach during design to be wanted the requirement of the accurate conversion gear that it realizes, the most all movable contact spring is played effect.
This utility model is usable in the mode of connection of the arrangement being fabricated to determine contact on moving contact switching mechanism and the transformer coil different draw bail of tap, then can realize the I linear voltage regulation of shunting switch, the various voltage regulating modes such as the mono-spanning of II connects, the bridging of III doube bridge, IVY-△ conversion, V series-parallel conversion, VI positive-negative voltage-regulation, patent right will be offended if making without permission.
This utility model overall structure is very simple, does not has complicated difficult to process part, does not has the part of special substance, and cost is less than switch of the same trade.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described further below in conjunction with the accompanying drawings.This utility model protection domain is not only limited to the statement of herein below.
In the following drawings, no matter shunting switch is a phase, two-phase or three-phase to Fig. 3, because each phase structure is the most identical, so only drawing a phase detail drawing in figure, remaining each phase figure is omitted.
Fig. 1-1,1-2 are that data of the present utility model calculate schematic diagram.
Fig. 2 is the structural representation that this utility model is applied to the innovative switching mechanism of shunting switch, is also to implement schematic diagram.
Fig. 3 is the position relationship schematic diagram with other associated components that this utility model is applied on shunting switch.
In figure, 1 be support shaft, 2 be main shaft, 3 be spring, 4 be movable contact spring, 5 be axle sleeve, 6 be bearing pin, 7 be axle, 8 be coaming plate, 9 for determine contact, plate headed by 10, clamping plate headed by 11,12 be operating mechanism, 13 be lower horizontal bearing pin, 14 be bottom plate, 15 be upper mounted plate.
Detailed description of the invention
As shown in the figure, this utility model includes vertical supporting axle, vertical main shaft, crossed strip, horizontal movable contact spring, horizontal axle sleeve, horizontal bearing pin and vertical axis, bearing pin is through the first cross through hole on main shaft, described axle sleeve is around main shaft, described bearing pin two ends are placed in the second cross through hole of axle sleeve both sides, and described movable contact spring is placed on axle sleeve outer ring and is blocked by the second cross through hole；Being cased with described spring on the bearing pin of main shaft side, spring one end offsets with main shaft, and the spring other end offsets with sleeve lining；The upper end of described main shaft is connected with the lower end of described axle, and the lower end of main shaft is connected with the upper end of described support shaft.
The centrage of described first cross through hole intersects with the axial line of main shaft, the axial line of axle sleeve respectively.
Described axle sleeve is cylindric axle sleeve, and movable contact spring is circular movable contact spring；The lower end outer wall of axle sleeve is provided with annular projection laterally, and described second cross through hole is arranged on the vertical middle part of axle sleeve, and the lower end of movable contact spring connects with annular projection upper surface, and the inwall of movable contact spring connects with the outer wall of axle sleeve.Movable contact spring and axle sleeve are all loop configuration, and the movable contact spring of loop configuration is the simplest structure for the movable contact spring of the shunting switch of form of ownership.It addition, this feature of loop configuration mainly centre is entirely hollow, axle sleeve inside center is hollow, it is achieved that the unimpeded Circulation of transformer oil, efficiently cools down, the problem of temperature rise effectively solved.
Described movable contact spring and axle sleeve matched in clearance.After axle sleeve is installed by bearing pin by main shaft, movable contact spring is enclosed within axle sleeve, when conversion gear is that main shaft drives axle sleeve to rotate, for sliding friction between axle sleeve and movable contact spring, it is possible to safe and punctual conversion gear；And the loss between reduction device.
Described first cross through hole, spring, movable contact spring, axle sleeve, bearing pin be combined as multiple, uniform along main axis length direction.It is all installed on one by main shaft by movable contact spring, and bridging two simultaneously adjacent determine contact, convert gear by the rotation of axle, it is achieved the regulation of voltage.
Described it is combined as 18.
The upper end of described main shaft interlocks with the lower end of axle, the lower end of main shaft interlocks with the upper end of support shaft, axle and support shaft are positioned at the same side of main shaft, the upper end of main shaft and the lower end of the axle portion that interlocks is fixed by upper horizontal bearing pin and is fixed with upper mounted plate, and the lower end of main shaft and the upper end of the support shaft portion that interlocks is fixed by lower horizontal bearing pin and fixed with bottom plate；Upper mounted plate is placed in vertical frame upper end and fixes with vertical frame, and bottom plate is placed in vertical frame lower end and fixes with vertical frame.Installing spring, movable contact spring, axle sleeve, bearing pin on main shaft, bearing pin through axle sleeve, main shaft, spring, is then installed to movable contact spring on axle sleeve successively.Main shaft is individually fixed between upper mounted plate and bottom plate, therewith does the conversion of gear, it is achieved each of circle distribution is determined the synchronicity of the switching of contact by movable contact spring.
Described spring is placed in the opposite side of axle.
Described support shaft lower end is spherical axle.Support shaft the most still has supporting role to core body device but also has guide effect when dismounting core body device, as shown in Figure 3, when core body device dismounting from switch of shunting switch, support shaft plays the effect of cardan pin, first first clamping plate are disassembled, as long as by torsional axis drive whole core body device be diverted to spring return to installation site the most flexible change time, so that it may by its core body device from switch dismantle；When the core body device of shunting switch is installed in switch, first core body device is tilted, it is passed to switch internal, then play under the guide effect of cardan pin in support shaft, pass through throw shaft, overcome the pressure of spring, when core body device is placed in center, first clamping plate is installed and core body device will be fixed to inside switch.
Described axle upper end is connected through the first clamping plate middle through-hole in the middle part of the most first plate with operating mechanism, and described spherical axle is placed in the arcuate groove in the middle part of horizontal tailgate；Laterally first plate and laterally multiple vertically determine contact around described axle is uniform between tailgate circumference.It is all installed and one by movable contact spring by main shaft, and bridging switching simultaneously be respectively connected with from each tap of transformer coil different two adjacent determine contact, convert gear by the rotation of axle, it is achieved the adjustment of voltage.
The described number vertically determining contact is six.
Described main shaft is cylinder or cuboid or square metallic conductor.Main shaft can also be anomalistic object.
Described bearing pin cross section is square or rectangle or oval metal conductor, and described first cross through hole is and the hole of bearing pin cross section correspondingly-shaped.Bearing pin is chosen as square or rectangle or the special construction of oval metallic conductor, is because this structure and solves the problem that movable contact spring is unstable.Bearing pin also may select any shape being prevented from movable contact spring instability.
Described support shaft, main shaft, spring, axle sleeve, bearing pin, axle are metalwork, and movable contact spring is copper fitting.
The external diameter of described movable contact spring is 96mm, and internal diameter is 78mm, and spring diameter is 1.2mm, and mean diameter of coil is 8mm.
In technical scheme described above, the core body device of shunting switch of the present utility model is used in a phase or two-phase or three-phase and then can respectively constitute single-phase or biphase or tap changer for three phases, and applies without permission and will offend patent right.
Technique scheme, the core body device of shunting switch the most of the present utility model, be applicable to all movable contact springs with shaft centre line for axle rotate in a circumferential direction switching determine contact realize shift gears pressure regulation shunting switch, such as its basic structure is all that each determines the uniform circular row of contact in the tubular shunting switch within the outer tube wall closed, drum-shaped shunting switch, cylindrical tap-changer, tubular shunting switch, and each determines contact circular row cage type tapping switch inside the insulation lath opened, also have and determine the dish type shunting switch that contact is fixed on insulating disc by circular row, or even other shape shunting switch of this switching mode can be changed system into, without permission, also infringement scope will be involved in.
Embodiment of the present utility model is as it is shown on figure 3, be that this utility model applies to connect voltage regulating mode rated voltage at one without the single-phase single spanning of excitation be 220V, and rated current is on the drum-shaped shunting switch of 2000A.Core body device in figure, support shaft is chosen to be metalwork；Main shaft is chosen to be metalwork；Spring is chosen to be metalwork, machinery industry standard JB/T8637-1997 regulation according to shunting switch, contact pressure be the rated through-current between 30N-50N be 125A-250A, each movable contact spring rated through-current of this TV station shunting switch is 135A, then contact pressure just may be set to 37N；Movable contact spring is chosen to be copper fitting, because the rated current of drum-shaped shunting switch is 2000A, standard GB/T according to shunting switch/T10230.1 regulation, it is maximum is 1.2 times of rated current by electric current, should be 2400A, all is 135A by its movable contact spring every integrated design current capacity, then need 18；Axle sleeve is chosen to be metalwork；Bearing pin is chosen to be metalwork；Axle is chosen to be metalwork；First spring, movable contact spring, axle sleeve, bearing pin four are partially installed on main shaft, the most again the bearing pin of the main shaft portion being assembled together above, support shaft and axle with upper and lower fixing plate Φ 8 is fixed, finally by the inside of above section integral installation to shunting switch, operator is only needed to rotate the axle of drum-shaped shunting switch, core body device just can drive movable contact spring to switch each gear to determine contact till target gear, complete the pressure regulation task of drum-shaped shunting switch.
The present utility model process.
The model of switch to be designed initially first is determined in design, research and development fundamental mode be connect 2000A electric current without the single-phase single spanning of excitation, 220Kv, voltage branch point number be 6, tap position number be the switch of 5, as shown in Fig. 1-1,1-2, data below calculates all with Fig. 1-1,1-2 explanation.
According to three patents in technical background, it is desirable to i.e. meet mechanical performance and meet again electric property and will design a kind of novel mechanism, most basic requirement has following 4 points: (1) movable contact spring is with to determine contact good.(2) movable contact spring with determine contact switching gear time be sliding friction or rolling friction.(3) it is capable of core-pulling function.(4) rational in infrastructure simple and stable.(5) low cost of manufacture.It is to require and the mechanical design processes of process for more than meeting 5 individually below.
(1) movable contact spring is with to determine contact good: movable contact spring structure choice annular, because simple in structure and low in cost is the most practical, first it is to consider that number of parts is the fewest certainly the best the most just to will recognize that semi-shaped support body, then both sides shock mount, control multiple movable contact springs of centre simultaneously, on a piece main shaft, then main shaft is arranged on semi-shaped support body, owing to movable contact spring work in-process has error, the movable contact spring having can be caused to touch and to determine contact, there will be again the problem in patent " the electromechanical integration integrating apparatus of shunting switch ", so this unreasonable structure；Carrying out structure reform in appeal structure again is exactly that the bearing pin on each contact is installed a spring and will be solved this problem, the spring at semi-shaped support body two ends is so just considered to remove, part can be reduced and also meet function, the movable contact spring in " a kind of tapping switch movable contact component having guide frame " will be there is vacillate now to the left, now to the right problem owing to the mounting means of movable contact spring is that a cylindrical pin is fixing, so finally determining that bearing pin changes into square structure to be arranged on main shaft, also square opening is opened on main shaft, it it is matched in clearance between bearing pin and square opening, when gearshift, bearing pin can be in the cofree movement of main shaft, the most well avoid the problem that movable contact spring waves.
(2) movable contact spring with determine contact switching gear time be sliding friction or rolling friction.nullThe structure that first sliding friction to be met selects is bearing，Movable contact spring is arranged on bearing top circle interference fit，Bearing pin is arranged on two ends on main shaft be connected with axle sleeve，Finally by sleeve outer circle and bearing inner circle interference fit，But this structure there will be after a problem seeks to be installed on bearing bearing pin installs bearing again，Moreover it is again interference fit between bearing and axle sleeve，Bearing should meet the power of radial load and meet the power of axial load again and will select a bearing the biggest，Shown in be so irrational，So choose and can only bear the bearing of axial load and can not meet again the requirement that gearshift is slided，Choose can only bear when the bearing of radial load can not meet again installation and wanted the requirement by axial force，Moreover the price of bearing is high and intensity is not especially good，Have metal fall guiding discharge in transformator if damaged inside transformator，And along with the increase bearing of movable contact spring also can increase，So thickness of bearing will increase，So core of shunting switch also can increase，It is pernicious for switch；Finally it is chosen to be axle sleeve to realize this function, it it is matched in clearance between axle sleeve and movable contact spring, after axle sleeve is installed by bearing pin by main shaft, movable contact spring is enclosed within axle sleeve, when conversion gear is that main shaft drives axle sleeve to rotate, for sliding friction between axle sleeve and movable contact spring, it is possible to safe and punctual conversion gear.
(3) it is capable of core-pulling function.nullBy the understanding to patent " the mounting or dismounting plate lock of shunting switch "，The effect that this function plays for switch it is known that loose core is the part needed when installation and removal，Very easily switch core body device can be taken out from switch after switch breaks down in other words conj.or perhaps，And during for switching at work core-pulling function be do not have effective，So " the mounting or dismounting plate lock of shunting switch " this patented technology increases at least seven kinds of parts to realize this function simultaneously，Number of parts is much larger than seven，And existing metal parts has insulating element in these several parts，So in transformator high-voltage switch gear for，Obviously number of parts play a game put the most unfavorable，The most more it is susceptible to electric discharge，So for the part that of switch is the most only i.e. mainly assosting effect，This structure is the simplest more good，And this structure is also suitable only for the switch of radial outgoing wire，Switch for axial outlet wire is also intended to internal structure could be taken out after determining to remove contact head plate，Waste time and energy；And no matter " a kind of tapping switch movable contact component having guide frame " this patented technology is the switch of axial outlet wire or the switch of radial outgoing wire does not the most possess core-pulling function.nullAnd for the preliminary idea that this problem is initial be in this patent，If Fig. 3 is exactly to be divided into two parts to install the first plate of switch，First plate just with determine contact and insulation sleeve is fixed together，As long as after head clamping plate being pulled down when dismounting or installation，Core body device is taken out from switch internal，But the analysis found that，After first clamping plate are removed，Due to head end portion the most no longer stress，Originally movable contact spring is with to determine contact the most tangent，So having, along with spring, the trend set back，Movable contact spring will lose extruding force to determining contact，But owing to afterbody is that a common axle is connected with tailgate，The axle that can tilt so afterbody due to head end under the action of the spring does not has the effect of any guiding to arise that stuck state，Core body device cannot be taken out at all，So just consider the spherical axle changing into by afterbody axle as there is universal effect，When head end tilts，The axle of afterbody has universal effect and can follow head end and tilt together or rotate，This makes it possible to taken out easily from switch internal by core body device or core body device is installed to switch internal.
(4) rational in infrastructure simple and stable.From the point of view of the design result of above three, 18 movable contact springs are had as example with drum switch, nine kinds are only had for part category in this utility model patent of movable contact spring part, the three kinds of parts that have needing quantity to be 18 are exactly 54 parts, and movable contact spring structure is very simple, core-pulling function is realized that an original first plate changes into two parts exactly and installs and can realize；The composition of " the electromechanical integration integrating apparatus of shunting switch " patented technology movable contact spring part has at least 15 kinds of parts, and can't meet for contact each movable contact spring can with determine on contact, there is unstability and uncertainty, special construction processing charges this respect for only movable contact spring is just far longer than loop configuration, cost is the highest, this device has the function loosed core but is only for the switch radially occurred, and the realization of core-pulling function to increase a lot of parts at switch internal, cost is high the most unstable for electric property；The building block kind of the movable contact spring part of " a kind of tapping switch movable contact component having guide frame " at least seven kinds, the six kinds of parts that have needing quantity 18 are exactly 108 parts, for the core body device of this patent many three times more than in number of parts, cost is difficult to estimate, and the movable contact spring of this structure is installed the most unstable, vacillate now to the left, now to the right, the structure of movable contact spring is the most special in order to meet pulley can process slideway inside movable contact spring by art skating in movable contact spring, waste time and energy, and once spring lost efficacy because of some reasons or life-span, can cause fatal problem is exactly to be likely to have metal parts drop in the inside guiding discharge of switch, and this structure does not possess core-pulling function.
(5) low cost of manufacture.nullCost estimation with regard to this patent is only the half of the bamboo shape switch cost that " the electromechanical integration integrating apparatus of shunting switch " forms，Concrete cost do not known not yet by the switch so formed for " a kind of tapping switch movable contact component having guide frame "，But in addition to core is different, remainder is far from each other for the switch of axial outlet wire，So contrast cost will see core，It is that mold processes for this structure of moving contact rack in " a kind of tapping switch movable contact component having guide frame "，The expense of mold is the significantly larger than part processing charges in this utility model patent，Process even pure，So also can waste a lot of material due to the complexity not only long processing time of structure，Expense is the same the highest，And for inside processing slideway this structure of movable contact spring for processing charges loop configuration to be far above，If being also mold processing，So expense is significantly larger than the movable contact spring of loop configuration especially，The infrastructure cost of " a kind of tapping switch movable contact component having guide frame " is also significantly larger than the core body device of shunting switch of this utility model patent obviously，And core body device that function does not also have shunting switch is complete.
After the analysis to mechanical performance, the electric property of core body device is carried out data and is calculated as follows.
Moving contact diameter calculating data: six moving contact circle distribution, each diameter determining contact determines according to the rated current of 1.2 times, in order to ensure transformator safety thus by switch rated current according to transformer industry standard-required increase by 1.2 times, learn rated through-current 1.2I=3 π R according to the computing formula of industry standard2, wherein I=2000A, 3 represent 3A/mm2Mean that every square millimeter can be transformer industry standard by the electric current of 3 amperes, from formula, so just can draw R ≈ 15.9mm, so the diameter determining contact in this design is set as Ф=32mm, six diameters determining contact circle distribution are directly set to 190mm according to existing experience and inside transformer space.
The data of movable contact spring calculate: the structure of movable contact spring is designed as very simple annular, size for movable contact spring sets several numerical value in the design process is Ф 84mm, Ф 90mm, Ф 96mm, Ф 104mm respectively, as Fig. 1-1,1-2 can be seen that when the least so movable contact spring of the diameter of movable contact spring and two parts fallen in when determining contact are the most, also imply that the decrement of spring is the biggest when switching gear, because the operational range of spring is extremely limited, then the selection of spring is just more difficult to；nullWhen the diameter of movable contact spring the biggest so with above-mentioned theory understand spring decrement the least，The selection of spring is the easiest，But it is to make movable contact spring and remaining four determine contact apart from the least exactly when movable contact spring is excessive，So can cause electric discharge，It is being finally Ф 96mm through spring being calculated the size just determining movable contact spring，According to transformer industry standard specify each movable contact spring through overcurrent between 100A-150A，Electric current I=180A can be passed through according to annular smallest cross-sectional，In the design, so just choose intermediate value i.e. each movable contact spring to be chosen to be can be more than sufficient by the electric current of 135A，So want the electric current by 2400A and be accomplished by 18 movable contact springs，Why selecting by electric current is that intermediate value is because so increasing two panels movable contact spring and so increases four contact points，It is exactly that contact point increases conductive effect meeting more preferably relatively in electric property.
nullThe data of spring calculate: according to the requirement in machinery industry standard JB/T8637-1997，Owing to the movable contact spring structure of core body device is that a spring controls a movable contact spring，And the electric current that each movable contact spring is passed through is 135A，And the requirement in industry standard is as shown in table 1，So contact pressure of the spring in this utility model patent just elects 37N as，When converting gear, spring-compressed is to maximum position, power to be ensured can not be excessive，So can cause the increase of torsional moment，And the most limited position being only installed only in the middle of axle sleeve and main shaft of the installing space of spring，According in explanation that spring is chosen in machinery handbook 3 it is known that choose the diameter of spring and mean diameter of coil it is also contemplated that when meeting condition that the test load of selected spring is whether within the numerical value of regulation at us，The process of choosing of spring and the process of choosing of movable contact spring size are associated，Movable contact spring size directly affects the length of spring and the selection of diameter，And the length of spring and diameter directly affect contact pressure，Contact pressure is to when shifting to the maximum numerical value of pressure，Size with movable contact spring has relation again，Movable contact spring is the least, and to fall in two adjacent numerical value determining contact the biggest，During gearshift, amount of spring compression is the biggest，So it is accomplished by any spring long and removes to meet the pressure of our needs，And now we are that the least spring obviously in the space of the most internally installed spring of little movable contact spring chosen lengthens and is difficulty with，And the numerical value needing spring pressure maximum now is likely to exceed test load，There will be again movable contact spring or the irrational situation of spring occurs，Place calculate be must both combine calculating，Look for a most suitable value to meet both requirements simultaneously，Finally it is chosen to be movable contact spring a diameter of Ф 96mmx Ф 78mm,Spring diameter Ф 1.2mm，Mean diameter of coil Ф 8mm，Contact pressure is 37N，During gearshift, maximum pressure is 59N，And the test load of spring is 68.71N meets the requirements.
| Rated through-current A | 20-63 | 125-250 | 400-630 |
| Contact pressure N | 15-30 | 30-50 | 60-90 |
It is understandable that, above with respect to specific descriptions of the present utility model, it is merely to illustrate this utility model and is not limited to the technical scheme described by this utility model embodiment, it will be understood by those within the art that, still this utility model can be modified or equivalent, to reach identical technique effect；Needs are used, all within protection domain of the present utility model as long as meeting.
Claims (10)
1. the core body device of shunting switch, including vertical supporting axle, vertical main shaft, crossed strip, movable contact spring, vertical axle sleeve, horizontal bearing pin and vertical axis, it is characterized in that bearing pin passes the first cross through hole on main shaft, described axle sleeve is around main shaft, described bearing pin two ends are placed in the second cross through hole of axle sleeve both sides, and described movable contact spring is placed on axle sleeve outer ring and is blocked by the second cross through hole；Being cased with described spring on the bearing pin of main shaft side, spring one end offsets with main shaft, and the spring other end offsets with sleeve lining；The upper end of described main shaft is connected with the lower end of described axle, and the lower end of main shaft is connected with the upper end of described support shaft.
The core body device of shunting switch the most according to claim 1, it is characterised in that the centrage of described first cross through hole intersects with the axial line of main shaft, the axial line of axle sleeve respectively；Described movable contact spring and axle sleeve matched in clearance.
The core body device of shunting switch the most according to claim 1, it is characterised in that described axle sleeve is cylindric axle sleeve, and movable contact spring is circular movable contact spring；The lower end outer wall of axle sleeve is provided with annular projection laterally, and described second cross through hole is arranged on the vertical middle part of axle sleeve, and the lower end of movable contact spring connects with annular projection upper surface, and the inwall of movable contact spring connects with the outer wall of axle sleeve.
The core body device of shunting switch the most according to claim 1, it is characterised in that described first cross through hole, spring, movable contact spring, axle sleeve, bearing pin be combined as multiple, uniform along main axis length direction.
The core body device of shunting switch the most according to claim 1, it is characterized in that the upper end of described main shaft interlocks with the lower end of axle, the lower end of main shaft interlocks with the upper end of support shaft, axle and support shaft are positioned at the same side of main shaft, the upper end of main shaft and the lower end of the axle portion that interlocks is fixed by upper horizontal bearing pin and is fixed with upper mounted plate, and the lower end of main shaft and the upper end of the support shaft portion that interlocks is fixed by lower horizontal bearing pin and fixed with bottom plate；Upper mounted plate is placed in vertical frame upper end and fixes with vertical frame, and bottom plate is placed in vertical frame lower end and fixes with vertical frame.
The core body device of shunting switch the most according to claim 1, it is characterised in that described support shaft lower end is spherical axle.
The core body device of shunting switch the most according to claim 6, it is characterised in that described axle upper end is connected through the first clamping plate middle through-hole in the middle part of the most first plate with operating mechanism, and described spherical axle is placed in the arcuate groove in the middle part of horizontal tailgate；Laterally first plate and laterally multiple vertically determine contact around described axle is uniform between tailgate circumference.
The core body device of shunting switch the most according to claim 1, it is characterised in that described main shaft is cylinder or cuboid or square metallic conductor.
The most according to claim 1, the core body device of shunting switch, it is characterised in that described bearing pin cross section is square or rectangle or oval metal conductor, described first cross through hole is and the hole of bearing pin cross section correspondingly-shaped.
The most according to claim 1, the core body device of shunting switch, it is characterised in that described support shaft, main shaft, spring, axle sleeve, bearing pin, axle are metalwork, movable contact spring is copper fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620469877.XU CN205789557U (en) | 2016-05-23 | 2016-05-23 | The core body device of shunting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620469877.XU CN205789557U (en) | 2016-05-23 | 2016-05-23 | The core body device of shunting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205789557U true CN205789557U (en) | 2016-12-07 |
Family
ID=58114678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620469877.XU Withdrawn - After Issue CN205789557U (en) | 2016-05-23 | 2016-05-23 | The core body device of shunting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205789557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788903A (en) * | 2016-05-23 | 2016-07-20 | 沈阳鸿基电气有限公司 | Core body device of tapping switch |
-
2016
- 2016-05-23 CN CN201620469877.XU patent/CN205789557U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788903A (en) * | 2016-05-23 | 2016-07-20 | 沈阳鸿基电气有限公司 | Core body device of tapping switch |
| CN105788903B (en) * | 2016-05-23 | 2017-12-22 | 沈阳天眼智云信息科技有限公司 | The core body device of shunting switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110144 Shenyang, Jiangsu Province, Yuhong District Street, No. 12 Patentee after: Shenyang eye Chi Yun Mdt InfoTech Ltd Address before: 110144 Shenyang, Jiangsu Province, Yuhong District Street, No. 12 Patentee before: Shenyang Hongji Electrical Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20171222 |