CN205543305U - Can reduce contact resistance's electricity connection device - Google Patents

Abstract

The utility model discloses a can reduce contact resistance's electricity connection device, include the sleeve that has plasticity with the terminal suit complex of low pressure kettle head, sleeve one side is equipped with the fault trough that cuts off the sleeve lateral wall and forms two dilapidated walls that correspond with the fault trough, set firmly along the outside arm lock of extending of dilapidated walls on the sleeve outer wall that corresponds with dilapidated walls, be equipped with corresponding double -layered hole in two arm lock, it has through the arm lock with the collet head clamp bolt on the terminal tightly to press from both sides downthehole cartridge, the wiring board that upwards extends sets firmly on the sleeve opposite side outer wall, the wiring board is connected with the cable through locking device. The advantage is: rational in infrastructure, installation wiring is convenient, and area of contact is big, contact resistance is little, difficultly takes place the overheated and accident of burning out, and the cleanliness is good, is difficult for being infected with the dust, and job stabilization is reliable, after long -term the use not can because of the vibration nut not hard up lead to generating heat burn out the screw thread post or the lacuna accident that opens circuit, longe -lived, the maintenance period is long, the operation cost is hanged down.

Description

The electrical power connection device of contact resistance can be reduced

Technical field

This utility model relates to the electrical power connection device that can reduce contact resistance.

Background technology

Transformator is a kind of static electrical equipment converting alternating current, is mainly used in being transformed to the AC energy of a kind of electric pressure the AC energy of the another kind of electric pressure of same frequency.Mainly it is made up of primary winding, secondary coil, stalloy three part in structure, being of wide application in power system.

At present, the structure of traditional transformer low pressure kettle head is all the porcelain seat that lower section is provided with an insulation, and on porcelain seat, the most fixed binding post, binding post has been tightened nut.When installing and using, need to install on binding post by the metallic plate set of power cable, then fastening nut.The structure of traditional transformer low pressure kettle head is relatively easy, installation wiring is convenient to, but this transformator has following defects that 1 in reality operation, binding post is by nut and the metallic plate compression fit of cable thus realizes electrically connecting, and binding post contacts simply by the screw thread silk of binding post and nut with nut, actual low pressure kettle head screw and the electric energy output external wire that calculates crimps contact area a little and only has about 4, therefore contact area is less, causes contact resistance bigger；2, lacking preventer, if being placed in outdoor for a long time, dust, acid rain etc. can block nut and binding post gap, corrosion nut and the screw thread silk of binding post, reduce both contacts area further, and then increase contact resistance；3, at secondary coil outlet point namely low pressure kettle head, electric current is bigger, electric current can only pass through screw thread silk (i.e. the silk of screw) conduction, easily cause binding post overheated when electric current is big and burn the binding post of low pressure kettle head, cause circuit phase shortage, burn electrical equipment, cause company property loss, civil disputation occurs, reduce power supply reliability index；4, service life is short, and maintenance period is short, safeguards that operation cost is high；5, the vibration of bigger frequency can be produced during transformator work, likely can cause nut loosening after life-time service, once occur that nut loosening phenomenon, nut will close on the high-impedance state of open circuit with the connection of binding post, now gently then burn out the screw of binding post and nut, heavy then directly result in open circuit lacuna.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of rational in infrastructure, easy-to-connect is installed, contact area is big, contact resistance is little, is not susceptible to overheated and burnout failure, and cleannes are good, it is difficult to covered with dust, stable and reliable in work, heating burnout binding post or open circuit lacuna accident will not be caused because of vibration nut loosening after life-time service, service life is long, maintenance period is long, the electrical power connection device that can reduce contact resistance that operation cost is low.

nullFor solving above-mentioned technical problem，Instinct reduces being structurally characterized in that of electrical power connection device of contact resistance: include that what the suit of the binding post with low pressure kettle head coordinated has plastic sleeve，Sleeve side is provided with fault trough sleeve lateral wall cut off and forms two dilapidated walls corresponding with fault trough，It is installed with on the sleeve outer wall corresponding with dilapidated walls along the outward extending jig arm of dilapidated walls，Two jig arm are provided with the folder hole of correspondence，It is fitted with sleeve clamping fishbolt on binding post in folder hole by jig arm，It is installed with upwardly extending patch panel on sleeve opposite side outer wall，Patch panel is connected by locking device cable，This patent also includes jig arm、Upper cartridge、Patch panel and locking device all cover and are buckled in the silicone rubber cover that interior oral area is down-set，Silicone rubber cover is installed with the silica gel piece coordinated with fault trough plug-in mounting on the inwall of jig arm，Silica gel piece is provided with the silica gel hole being correspondingly arranged with folder hole and being much larger than folder hole.

It is to realize rational in infrastructure by clamped-in style sleeve structure that instinct reduces the electrical power connection device of contact resistance, easy-to-connect is installed, contact area is big, contact resistance is little, is not susceptible to overheated and burnout failure, and cleannes are good, it is difficult to covered with dust, stable and reliable in work, heating burnout binding post or open circuit lacuna accident will not be caused because of vibration nut loosening after life-time service, the life-span is long, maintenance period is long, and operation cost is low.

Clamped-in style sleeve structure mainly includes being set with, with binding post, the sleeve coordinated, and the sidewall of sleeve side is provided with fault trough.Because the section of fault trough radially extends setting along sleeve, therefore in the through sleeve lateral wall of fault trough, outside is arranged.Because the section of fault trough also axially the most extended along sleeve, therefore the upper and lower two ends of the most through sleeve lateral wall of fault trough are arranged.So, sleeve lateral wall is just cut off and is come by fault trough, makes whole sleeve sidepiece form the slot-shaped side port of a complete open type.Because sleeve is round tube shape structure, after arranging fault trough, the cross section of whole sleeve is just in " C " shape.Describing for convenience, the section of the sleeve lateral wall formed after cutting fault trough is referred to as dilapidated walls, so, sleeve just has two dilapidated walls close to each other, and fault trough is between two dilapidated walls.

In this patent, sleeve outer wall being fixedly provided with two jig arm, jig arm is arranged near dilapidated walls, and a sidewall of jig arm is corresponding with dilapidated walls to be connected and be positioned in a plane.So, two jig arm are equivalent to the extension that dilapidated walls are outside, and two jig arm are also spaced setting.Because sleeve is made up of metal material, generally alloy, the most both there is preferable plasticity.As it was previously stated, sleeve cut off by fault trough after in " C " shape, and two jig arm are placed exactly in two ends of " C " shape sleeve, therefore drive the sleeve plastic deformation of " C " shape will be more laborsaving by jig arm.When two jig arm are moved towards by chucking power, two jig arm will drive the deformation of " C " shape sleeve synchronizing moving, namely two jig arm line swinging deformation in opposite directions centered by sleeve axial line.In this patent, two jig arm are provided with the folder hole of correspondence, are fitted with fishbolt in folder hole, and providing chucking power to two jig arm is exactly this fishbolt.When tightening fishbolt, two jig arm will be extruded by fishbolt, and now two jig arm move towards, and " C " shape sleeve is also drive by jig arm and shrinks to axial line, for convenience of narration, this state is referred to as clamped condition or contraction state.When contraction state, barrel bore diameter diminishes, and therefore sleeve lining will tightly be wrapped on binding post outer wall, it is ensured that sleeve and the reliability of binding post electrical connection.Due to all screw threads all clamping engagement of sleeve lining Yu whole binding post, therefore both contacts area are big with the contact area of binding post more than single nut, thus substantially reduce both contact resistances, greatly reduce the probability of binding post heating.Obviously, the degree of tightening of fishbolt, sleeve and the contact area of the clamping degree of binding post, sleeve and binding post, this three is proportional relation.That is, fishbolt is twisted the tightest, sleeve plastic deformation is the most thorough, sleeve just clamps the tightest with binding post, and it is the deepest that the screw of binding post embeds sleeve lining, and the contact area of sleeve and binding post is the biggest, the contact resistance of sleeve and binding post is the least, and binding post heating probability is the lowest.Therefore, when using this patent, only need to tighten fishbolt to attach the casing on binding post, operate the simplest.And when needing dismounting, only need to unclamp fishbolt, and the screwdriver carried with electrician inserts fault trough and pries open or strut two jig arm, " C " shape sleeve can be strutted into the tubular structure of larger interior diameter, complete the plastic deformation extended out, thus easily sleeve can be taken off from binding post, operate the simplest.For convenience of narration, " C " shape sleeve can be referred to as softened state or extended configuration from the state that binding post departs from.Obviously, only need to control the contraction state of " C " shape sleeve or extended configuration, being reliably connected and easily separating of sleeve and binding post can be realized, simple to operate, safeguard or change being convenient to.

Being fixedly provided with patch panel on sleeve, patch panel is positioned at the opposite side of sleeve, is oppositely arranged with jig arm.Patch panel is slab construction, the most extended, the most not only facilitates wiring, and does not interferes with the safe distance of adjacent thread post.Locking device it is provided with on patch panel, patch panel and cable can be made to fix by operation locking device to be electrically connected, thus achieved the reliable output of electric energy by the reliable electrical connection of threaded post, sleeve, patch panel and locking device, it is ensured that in service life, reduce maintenance cost.

After silicone rubber cover is set, silicone rubber cover can be detained and cover on above jig arm, upper cartridge, patch panel and terminal board, and by jig arm, upper cartridge, patch panel and terminal board completely ladle cover in silicone rubber cover inner chamber, so can play the effect of weather proof, dust protection, ensure that the cleaning of connecting portion between connecting portion between sleeve and binding post, patch panel and terminal board, also ensure that the reliability of electrical connection between above-mentioned connecting portion.In this patent, silicone rubber cover inwall being installed with a silica gel piece, silica gel piece is vertically arranged.Being provided with a silica gel hole in the middle part of silica gel piece, the size in silica gel hole is much larger than folder hole size.The purpose so arranged, is to facilitate silica gel piece to insert smoothly in the space between two jig arm, and can pass through silica gel hole when fishbolt inserts folder hole.When clamped condition, silica gel piece is by jig arm crimp, and utilizes natural resiliency to increase silica gel piece and the frictional force of jig arm and bed knife, makes silica gel piece be fixed between two jig arm.The benefit so arranged is, during normal use, if run into maintenance, directly can be started by silicone rubber cover thus expose jig arm, upper cartridge, patch panel and terminal board, in order to maintenance.Owing to silica gel piece and jig arm are fixing annexations, therefore when silicone rubber cover is started, silica gel piece can't move relative to jig arm, but elastic deformation occurs in the junction of silica gel piece and silicone rubber cover.When overhauling complete, then silicone rubber cover former state being put down, now the elastic deformation of silica gel piece and silicone rubber cover junction disappears and restores to the original state.So arrange it is also an advantage that, it is simply that by less External Force Acting time, when blowing such as wind, silicone rubber cover still can keep under the resilient support effect of silica gel piece button hood-like state, it is ensured that the reliability of silicone rubber cover protective effect and persistency.

As improvement, described binding post includes being installed in the threaded post on porcelain seat bottom low pressure kettle head, threaded post upper end is coaxially installed with the cylindrical stopper thinner than binding post, inserting column periphery is evenly equipped with the most extended perpendicular tooth, sleeve lining epimere is coaxially installed with ring gear, ring gear internal diameter is equal with inserting column external diameter, ring gear inwall is equipped with and the vertical slot that plug-in mounting coordinates the most up and down.

Binding post is set to the dual beam configuration of the most affixed threaded post and inserting column, it is possible to achieve connect the post connected mode different from sleeve and different connection effects.As mentioned previously, because be provided with the screw thread that spiral is arranged from top to bottom in threaded post, when at clamped condition, sleeve tightly clamps threaded post makes the screw thread of threaded post be deeply embedded into plastic deformation sleeve lining, so can realize both reliable electrical connections.Screw thread in threaded post also has second effect, it is simply that retaining or anti-skidding effect.In the clamp state, the screw thread of threaded post is deeply embedded in the sleeve of plastic deformation, owing to the screw thread of threaded post is about horizontally set, therefore, now sleeve can not from threaded post axial slip, it is ensured that both connect reliability, it is ensured that this patent work reliability.In this patent, sleeve epimere being coaxially installed with a ring gear, ring gear is correspondingly arranged with the inserting column of threaded post upper end.Because inserting column arranges thinner than threaded post, therefore when threaded post inserts sleeve, thinner inserting column is more easily inserted in sleeve the effect therefore with guiding, improves assembling speed during installation, and this is one of the effect of inserting column.Inserting column periphery is evenly equipped with the most extended perpendicular tooth, and is evenly equipped with the most extended vertical slot on ring gear inwall, and vertical slot and perpendicular tooth are correspondingly arranged.After inserting column guides threaded post to insert sleeve, inserting column also can corresponding insert in ring gear.For convenience of narration, threaded post inserting sleeve hypomere, inserting column is also inserted into the state of ring gear and is referred to as insert state simultaneously.Because the sleeve diameter under extended configuration is more slightly larger than threaded post external diameter, and inserting column diameter is equal with ring gear internal diameter, and therefore when insert state, inserting column and ring gear are to press close to be slidably matched, and threaded post and sleeve are clearance sliding fit.When tightening fishbolt and reaching clamped condition, the sleeve hypomere of matched in clearance and threaded post are by together with clamping engagement.Now, originally the inserting column with regard to snug fit also will clamp tightr with ring gear, erects tooth and vertical slot by together with squeezed tight, so, the clamping engagement of inserting column and ring gear has just reached degree more close than threaded post and sleeve, fundamentally ensure that the reliability that binding post electrically connects with sleeve.In this patent, because perpendicular tooth and vertical slot be all threadingly axis of a cylinder to extended, therefore, when clamped condition, if not using violence to be separated with inserting column by ring gear by force by unclamping fishbolt mode, ring gear and inserting column can only be applied axial tension in opposite direction, namely sleeve and threaded post are applied axial tension in opposite direction.Contrary, because the screw thread in threaded post is all substantial transverse setting, namely it is the most vertically disposed with threaded post, therefore, when clamped condition, if not using violence threaded post to be separated with sleeve by force by unclamping fishbolt mode, can only use and sleeve and threaded post are applied horizontal torsion in opposite direction.In sum, in the clamp state, if not using the mode unclamping fishbolt, and use and threaded post and sleeve are applied axial tension violence in opposite direction when pulling, although the resistance that the perpendicular tooth of clamped condition and vertical slot produce is little, but the horizontal thread embedding the threaded post of sleeve lining will produce great resistance, therefore cannot realize separating；If use the torsion violence rotation in opposite direction to threaded post and sleeve applying, although the threaded post of clamped condition and sleeve will not produce excessive resistance, but under clamped condition, perpendicular tooth and the vertical slot of axially extending setting will produce great resistance, the most also cannot realize separating.In short, when clamped condition, sleeve can only be separated from screw column by unclamping fishbolt mode, otherwise use violence mode the most not all right, fundamentally ensure that the affixed reliability of this patent, the reliability of electrical connection, this namely inserting column effect two.

As improvement, described inserting column upper end is coaxially installed with tip conical blocks upward, and the conical surface of conical blocks is equipped with the helical teeth extended to periphery, bottom from conical blocks tip, the round and smooth connection corresponding with perpendicular tooth upper end of helical teeth lower end.

In this patent, sleeve can smoothly, quickly overlap and install on binding post for convenience, and sleeve diameter arranges slightly thicker than threaded post, namely there is a small-gap suture between sleeve lining and threaded post periphery.So, after sleeve set to threaded post epimere, because the existence in above-mentioned gap, the inserting column equal with ring gear internal diameter it is possible to misalignment ring gear, also cannot smoothly, be quickly inserted in ring gear.After the fixed conical blocks in inserting column upper end, upward and it is coaxially disposed with inserting column because conical blocks is tip, therefore before inserting column inserts ring gear, the tip of conical blocks can first be inserted in ring gear, and guide inserting column to insert smoothly in ring gear by its conical outside face, therefore conical blocks has the guide effect that auxiliary inserting column is quick, be properly inserted in ring gear.In this patent, the conical surface of conical blocks being equipped with some helical teeth, helical teeth is extended namely extended to perpendicular tooth upper end from conical blocks tip to periphery bottom conical blocks from conical blocks tip along taper seat.The quantity one_to_one corresponding of the quantity of helical teeth, the quantity of perpendicular tooth and vertical slot is arranged, and all helical teeth upper ends are gathered in conical blocks tip, and the lower end of all helical teeth is connected with each self-corresponding perpendicular tooth upper end rounding off.The benefit so arranged is, when conical blocks inserts ring gear inner chamber, no matter whether conical blocks is co-axially inserted ring gear, owing to protruding from the existence of the helical teeth of the conical blocks conical surface, helical teeth can prior to the conical blocks conical surface touch ring gear inwall and slip into ring gear inwall vertical slot in.Along with conical blocks is gradually inserted ring gear, the helical teeth snapping in vertical slot slides under the position-limiting action of vertical slot in vertical slot the most always relatively.Because helical teeth hypomere and perpendicular tooth epimere are rounding ofves, therefore when vertical slot is slipped in helical teeth lower end, perpendicular for guiding tooth upper end is slipped in vertical slot by helical teeth lower end automatically.So, helical teeth just serves and makes perpendicular tooth and the self-aligning guide effect in advance of vertical slot, it is ensured that sleeve and the success rate of binding post plug-in mounting cooperation and smoothness, also improves installment work efficiency.

As improving further, described helical teeth is the isosceles triangle that drift angle is arranged outwardly with the cross section of perpendicular tooth, the cross section of the adjacent slot walls of adjacent vertical slot also in the drift angle corresponding with perpendicular tooth towards the isosceles triangle of ring gear axial line.

For convenience of narration, sidewall corresponding with isosceles triangle hypotenuse with perpendicular tooth for helical teeth is referred to as skew wall, tip corresponding with isosceles triangle drift angle with perpendicular tooth for helical teeth is referred to as top corner part.The cross section of helical teeth and perpendicular tooth is set to drift angle isosceles triangle outwardly, can make conical blocks insert ring gear time, the top corner part of helical teeth can prior to other positions enter ring gear and and vertical slot determined by smallest circular trajectory.The adjacent slot walls of adjacent vertical slot also can surround into a dentalation, for convenience of narration, is referred to as " internal tooth ", and the cell wall of vertical slot is exactly the tooth wall of internal tooth.In this patent, owing to the cross section of the cell wall of adjacent vertical slot is also top isosceles triangle outwardly, therefore the cross section of internal tooth is also the tip isosceles triangle towards ring gear axial line.Therefore, the Circular test line that in the range of the tip of all internal tooths encompasses a ring gear, internal diameter is minimum.Gradually slide axially into ring gear along with conical blocks, the tip of helical teeth can become closer to this Circular test line.Owing to helical teeth has outward extending top corner part, and internal tooth also has the tip extended to ring gear axial line, and adjacent top corner and tip towards being almost oppositely arranged, therefore when the top corner part of helical teeth arrives Circular test line, overwhelming majority situation is that helical teeth top corner part slides between two adjacent internal tooths, namely slips in vertical slot.Also have another kind of pole special circumstances, it it is exactly the helical teeth top corner part tip of just encountering internal tooth, now top because of both having one, the most do not exist and make both keep the support of opposition state, namely both will misplace in the moment touched, fundamentally avoid stucking phenomena when helical teeth aligns with internal tooth.After both dislocation, the skew wall of helical teeth just slides along the tooth wall of internal tooth, namely slips into the vertical slot of interior between cog.Along with conical blocks is gradually inserted ring gear, helical teeth the most gradually slips in vertical slot.In sum, the helical teeth of cross section isosceles triangle setting and internal tooth, stucking phenomena when both align can be avoided the occurrence of, namely fundamentally ensure that sleeve and the smoothness of binding post plug-in mounting and reliability, improve installation effectiveness.

As a kind of implementation, described locking device includes the locking hole being arranged on patch panel, is fitted with clamping screw in locking hole, also includes that friction tight sleeve pipe locked by the cable core suit with cable, cannula end is installed with terminal board, and terminal board is installed with the terminal hole corresponding with locking hole.

Being shunk by hydraulic way after sleeve pipe suit cable inner core, such sleeve pipe just can crimp into a single integrated structure with cable inner core, thus realizes electrically connecting with the reliable of cable with sleeve pipe.Sleeve pipe latter end is fixedly connected with terminal board, and terminal board is provided with terminal hole.Sleeve epimere is installed with patch panel, and patch panel is provided with the locking hole corresponding with terminal hole.When needing to connect cable, only locking hole and terminal hole need to be alignd, be inserted into clamping screw and tighten, patch panel and terminal board locking can be made into a single integrated structure, namely achieve the reliable electrical connection of patch panel and cable.This locking device in use, only need to be tightened or unclamp clamping screw, can realize the electrical connection of patch panel and cable, operate the simplest.

As improvement, it is evenly equipped with along the extended translot that cross section is V-arrangement of terminal board length direction on the sidewall of described terminal board and patch panel snug fit, the horizontal bar that the cross section corresponding with translot is △ shape it is evenly equipped with on the sidewall of patch panel, when terminal hole and locking hole alignment, horizontal bar is correspondingly embedded in translot.

For convenience of narration, it is referred to as being adjacent to face by the side that patch panel and terminal board are mutually adjacent to.In this patent, being adjacent on face of terminal board is evenly equipped with some translots, and translot is extended along terminal board length direction.Being adjacent on face of patch panel is evenly equipped with some horizontal bars, the horizontally extending setting of horizontal bar.When terminal hole and locking hole align, horizontal bar is correspondingly embedded in translot.After tightening clamping screw, horizontal bar and translot are by mutual compression fit.The purpose so arranged is to increase terminal board and the contact area of patch panel, reduces both contact resistances, reduces heat generation rate, it is ensured that both are reliably connected.

As improving further, described silicone rubber cover sidewall is provided with the n shape opening that the oral area corresponding with terminal board is down-set, opening is equipped with silica gel thin slice, is provided with the thin seam of a up/down perforation in the middle part of thin slice, and described silicone rubber cover top is tip hemisphere upward.

In this patent, silicone rubber cover top is set to tip hemisphere upward, can play and avoid dust accretions at silicone rubber cover end face, keep the effect of silicone rubber cover cleaning, provide conveniently for electric power overhaul.The opening of n shape is set at silicone rubber cover avris, aperture position is correspondingly arranged with terminal board, so when the hood-like state of silicone rubber cover button, the connecting portion of terminal board and sleeve pipe can just embed in the opening of n shape, both ensure that all parts was completely detained cover by silicone rubber cover, also silicone rubber cover is made will not to deform because of the extruding of terminal board, the most attractive in appearance.In this patent, n shape opening is laid with one layer of silica gel thin slice, in the middle part of silica gel thin slice, is provided with a thin seam the most extended.When silicone rubber cover button cover jig arm, upper cartridge, patch panel and terminal board, terminal board can enter thin seam.Because the thickness of silica gel thin slice is than the thickness much thinner of silicone rubber cover, therefore elastic more preferable, extensibility is more preferable, the silica gel thin slice of so thin seam both sides will tightly wrap terminal board, serve sealing function, effectively prevent from dust from passing through opening to enter inside silicone rubber cover, further ensure the spatter property of jig arm, upper cartridge, patch panel and terminal board.

In sum, the electrical power connection device that can reduce contact resistance using this structure is rational in infrastructure, installs easy-to-connect, and contact area is big, contact resistance is little, it is not susceptible to overheated and burnout failure, cleannes are good, are difficult to covered with dust, stable and reliable in work, heating burnout threaded post or open circuit lacuna accident will not be caused because of vibration nut loosening after life-time service, life-span is long, and maintenance period is long, and operation cost is low.

Accompanying drawing explanation

In conjunction with accompanying drawing, this utility model is described in further detail:

Fig. 1 is the structural representation of sleeve, patch panel, non-terminal plate fits；

Fig. 2 is the structural representation that low pressure kettle head, inserting column and conical blocks coordinate；

Fig. 3 is binding post and the structural representation of conical blocks cooperation；

Fig. 4 is the A-A half sectional view of Fig. 1；

Fig. 5 is the fit structure schematic diagram of silicone rubber cover and silica gel piece；

Fig. 6 is low pressure kettle head, sleeve, patch panel and the structural representation of terminal board clamped condition；

Fig. 7 is the integral outer structural representation of this patent.

Detailed description of the invention

As shown in the figure, this electrical power connection device that can reduce contact resistance include with the binding post 2 of low pressure kettle head 1 suit coordinate there is plastic sleeve 3, sleeve side is provided with the fault trough 4 sleeve lateral wall cut off and forms two dilapidated walls 5 corresponding with fault trough, it is installed with along the outward extending jig arm of dilapidated walls 6 on the sleeve outer wall corresponding with dilapidated walls, two jig arm are provided with the folder hole 7 of correspondence, it is fitted with sleeve clamping fishbolt 8 on binding post in folder hole by jig arm, upwardly extending patch panel 9 it is installed with on sleeve opposite side outer wall, patch panel is connected by locking device cable 10.

Instinct reduces the electrical power connection device of contact resistance and mainly includes being set with, with binding post, the sleeve coordinated, and the sidewall of sleeve side is provided with fault trough.Because the section of fault trough radially extends setting along sleeve, therefore in the through sleeve lateral wall of fault trough, outside is arranged.Because the section of fault trough also axially the most extended along sleeve, therefore the upper and lower two ends of the most through sleeve lateral wall of fault trough are arranged.So, sleeve lateral wall is just cut off and is come by fault trough, makes whole sleeve sidepiece form the slot-shaped side port of a complete open type.Because sleeve is round tube shape structure, after arranging fault trough, the cross section of whole sleeve is just in " C " shape.Describing for convenience, the section of the sleeve lateral wall formed after cutting fault trough is referred to as dilapidated walls, so, sleeve just has two dilapidated walls close to each other, and fault trough is between two dilapidated walls.

In this patent, sleeve outer wall being fixedly provided with two jig arm, jig arm is arranged near dilapidated walls, and a sidewall of jig arm is corresponding with dilapidated walls to be connected and be positioned in a plane.So, two jig arm are equivalent to the extension that dilapidated walls are outside, and two jig arm are also spaced setting.Because sleeve is made up of metal material, generally alloy, the most both there is preferable plasticity.As it was previously stated, sleeve cut off by fault trough after in " C " shape, and two jig arm are placed exactly in two ends of " C " shape sleeve, therefore drive the sleeve plastic deformation of " C " shape will be more laborsaving by jig arm.When two jig arm are moved towards by chucking power, two jig arm will drive the deformation of " C " shape sleeve synchronizing moving, namely two jig arm line swinging deformation in opposite directions centered by sleeve axial line.In this patent, two jig arm are provided with the folder hole of correspondence, are fitted with fishbolt in folder hole, and providing chucking power to two jig arm is exactly this fishbolt.When tightening fishbolt, two jig arm will be extruded by fishbolt, and now two jig arm move towards, and " C " shape sleeve is also drive by jig arm and shrinks to axial line, for convenience of narration, this state is referred to as clamped condition or contraction state.When contraction state, barrel bore diameter diminishes, and therefore sleeve lining will tightly be wrapped on binding post outer wall, it is ensured that sleeve and the reliability of binding post electrical connection.Due to all screw threads all clamping engagement of sleeve lining Yu whole binding post, therefore both contacts area are big with the contact area of binding post more than single nut, thus substantially reduce both contact resistances, greatly reduce the probability of binding post heating.Obviously, the degree of tightening of fishbolt, sleeve and the contact area of the clamping degree of binding post, sleeve and binding post, this three is proportional relation.That is, fishbolt is twisted the tightest, sleeve plastic deformation is the most thorough, sleeve just clamps the tightest with binding post, and it is the deepest that the screw of binding post embeds sleeve lining, and the contact area of sleeve and binding post is the biggest, the contact resistance of sleeve and binding post is the least, and binding post heating probability is the lowest.Therefore, when using this patent, only need to tighten fishbolt to attach the casing on binding post, operate the simplest.And when needing dismounting, only need to unclamp fishbolt, and the screwdriver carried with electrician inserts fault trough and pries open or strut two jig arm, " C " shape sleeve can be strutted into the tubular structure of larger interior diameter, complete the plastic deformation extended out, thus easily sleeve can be taken off from binding post, operate the simplest.For convenience of narration, " C " shape sleeve can be referred to as softened state or extended configuration from the state that binding post departs from.Obviously, only need to control the contraction state of " C " shape sleeve or extended configuration, being reliably connected and easily separating of sleeve and binding post can be realized, simple to operate, safeguard or change being convenient to.

Being fixedly provided with patch panel on sleeve, patch panel is positioned at the opposite side of sleeve, is oppositely arranged with jig arm.Patch panel is slab construction, the most extended, the most not only facilitates wiring, and does not interferes with the safe distance of adjacent thread post.Locking device it is provided with on patch panel, patch panel and cable can be made to fix by operation locking device to be electrically connected, thus achieved the reliable output of electric energy by the reliable electrical connection of threaded post, sleeve, patch panel and locking device, it is ensured that in service life, reduce maintenance cost.

Described binding post includes being installed in the threaded post 11 on porcelain seat 12 bottom low pressure kettle head, threaded post upper end is coaxially installed with the cylindrical stopper 13 thinner than binding post, inserting column periphery is evenly equipped with the most extended perpendicular tooth 14, sleeve lining epimere is coaxially installed with ring gear 15, ring gear internal diameter is equal with inserting column external diameter, ring gear inwall is equipped with and erects the vertical slot 16 that the upper and lower plug-in mounting of tooth coordinates.

Binding post is set to the dual beam configuration of the most affixed threaded post and inserting column, it is possible to achieve connect the post connected mode different from sleeve and different connection effects.As mentioned previously, because be provided with the screw thread that spiral is arranged from top to bottom in threaded post, when at clamped condition, sleeve tightly clamps threaded post makes the screw thread of threaded post be deeply embedded into plastic deformation sleeve lining, so can realize both reliable electrical connections.Screw thread in threaded post also has second effect, it is simply that retaining or anti-skidding effect.In the clamp state, the screw thread of threaded post is deeply embedded in the sleeve of plastic deformation, owing to the screw thread of threaded post is about horizontally set, therefore, now sleeve can not from threaded post axial slip, it is ensured that both connect reliability, it is ensured that this patent work reliability.In this patent, sleeve epimere being coaxially installed with a ring gear, ring gear is correspondingly arranged with the inserting column of threaded post upper end.Because inserting column arranges thinner than threaded post, therefore when threaded post inserts sleeve, thinner inserting column is more easily inserted in sleeve the effect therefore with guiding, improves assembling speed during installation, and this is one of the effect of inserting column.Inserting column periphery is evenly equipped with the most extended perpendicular tooth, and is evenly equipped with the most extended vertical slot on ring gear inwall, and vertical slot and perpendicular tooth are correspondingly arranged.After inserting column guides threaded post to insert sleeve, inserting column also can corresponding insert in ring gear.For convenience of narration, threaded post inserting sleeve hypomere, inserting column is also inserted into the state of ring gear and is referred to as insert state simultaneously.Because the sleeve diameter under extended configuration is more slightly larger than threaded post external diameter, and inserting column diameter is equal with ring gear internal diameter, and therefore when insert state, inserting column and ring gear are to press close to be slidably matched, and threaded post and sleeve are clearance sliding fit.When tightening fishbolt and reaching clamped condition, the sleeve hypomere of matched in clearance and threaded post are by together with clamping engagement.Now, originally the inserting column with regard to snug fit also will clamp tightr with ring gear, erects tooth and vertical slot by together with squeezed tight, so, the clamping engagement of inserting column and ring gear has just reached degree more close than threaded post and sleeve, fundamentally ensure that the reliability that binding post electrically connects with sleeve.In this patent, because perpendicular tooth and vertical slot be all threadingly axis of a cylinder to extended, therefore, when clamped condition, if not using violence to be separated with inserting column by ring gear by force by unclamping fishbolt mode, ring gear and inserting column can only be applied axial tension in opposite direction, namely sleeve and threaded post are applied axial tension in opposite direction.Contrary, because the screw thread in threaded post is all substantial transverse setting, namely it is the most vertically disposed with threaded post, therefore, when clamped condition, if not using violence threaded post to be separated with sleeve by force by unclamping fishbolt mode, can only use and sleeve and threaded post are applied horizontal torsion in opposite direction.In sum, in the clamp state, if not using the mode unclamping fishbolt, and use and threaded post and sleeve are applied axial tension violence in opposite direction when pulling, although the resistance that the perpendicular tooth of clamped condition and vertical slot produce is little, but the horizontal thread embedding the threaded post of sleeve lining will produce great resistance, therefore cannot realize separating；If use the torsion violence rotation in opposite direction to threaded post and sleeve applying, although the threaded post of clamped condition and sleeve will not produce excessive resistance, but under clamped condition, perpendicular tooth and the vertical slot of axially extending setting will produce great resistance, the most also cannot realize separating.In short, when clamped condition, sleeve can only be separated from screw column by unclamping fishbolt mode, otherwise use violence mode the most not all right, fundamentally ensure that the affixed reliability of this patent, the reliability of electrical connection, this namely inserting column effect two.

In the present embodiment, described inserting column upper end is coaxially installed with tip conical blocks 17 upward, and the conical surface of conical blocks is equipped with the helical teeth 18 extended to periphery, bottom from conical blocks tip, the round and smooth connection corresponding with perpendicular tooth upper end of helical teeth lower end.In this patent, sleeve can smoothly, quickly overlap and install on binding post for convenience, and sleeve diameter arranges slightly thicker than threaded post, namely there is a small-gap suture between sleeve lining and threaded post periphery.So, after sleeve set to threaded post epimere, because the existence in above-mentioned gap, the inserting column equal with ring gear internal diameter it is possible to misalignment ring gear, also cannot smoothly, be quickly inserted in ring gear.After the fixed conical blocks in inserting column upper end, upward and it is coaxially disposed with inserting column because conical blocks is tip, therefore before inserting column inserts ring gear, the tip of conical blocks can first be inserted in ring gear, and guide inserting column to insert smoothly in ring gear by its conical outside face, therefore conical blocks has the guide effect that auxiliary inserting column is quick, be properly inserted in ring gear.In this patent, the conical surface of conical blocks being equipped with some helical teeth, helical teeth is extended namely extended to perpendicular tooth upper end from conical blocks tip to periphery bottom conical blocks from conical blocks tip along taper seat.The quantity one_to_one corresponding of the quantity of helical teeth, the quantity of perpendicular tooth and vertical slot is arranged, and all helical teeth upper ends are gathered in conical blocks tip, and the lower end of all helical teeth is connected with each self-corresponding perpendicular tooth upper end rounding off.The benefit so arranged is, when conical blocks inserts ring gear inner chamber, no matter whether conical blocks is co-axially inserted ring gear, owing to protruding from the existence of the helical teeth of the conical blocks conical surface, helical teeth can prior to the conical blocks conical surface touch ring gear inwall and slip into ring gear inwall vertical slot in.Along with conical blocks is gradually inserted ring gear, the helical teeth snapping in vertical slot slides under the position-limiting action of vertical slot in vertical slot the most always relatively.Because helical teeth hypomere and perpendicular tooth epimere are rounding ofves, therefore when vertical slot is slipped in helical teeth lower end, perpendicular for guiding tooth upper end is slipped in vertical slot by helical teeth lower end automatically.So, helical teeth just serves and makes perpendicular tooth and the self-aligning guide effect in advance of vertical slot, it is ensured that sleeve and the success rate of binding post plug-in mounting cooperation and smoothness, also improves installment work efficiency.

In the present embodiment, the cross section of described helical teeth and perpendicular tooth is the isosceles triangle that drift angle is arranged outwardly, the cross section of the adjacent slot walls of adjacent vertical slot also in the drift angle corresponding with perpendicular tooth towards the isosceles triangle of ring gear axial line.For convenience of narration, sidewall corresponding with isosceles triangle hypotenuse with perpendicular tooth for helical teeth is referred to as skew wall, tip corresponding with isosceles triangle drift angle with perpendicular tooth for helical teeth is referred to as top corner part.The cross section of helical teeth and perpendicular tooth is set to drift angle isosceles triangle outwardly, can make conical blocks insert ring gear time, the top corner part of helical teeth can prior to other positions enter ring gear and and vertical slot determined by smallest circular trajectory.The adjacent slot walls of adjacent vertical slot also can surround into a dentalation, for convenience of narration, is referred to as " internal tooth ", and the cell wall of vertical slot is exactly the tooth wall of internal tooth.In this patent, owing to the cross section of the cell wall of adjacent vertical slot is also top isosceles triangle outwardly, therefore the cross section of internal tooth is also the tip isosceles triangle towards ring gear axial line.Therefore, the Circular test line that in the range of the tip of all internal tooths encompasses a ring gear, internal diameter is minimum.Gradually slide axially into ring gear along with conical blocks, the tip of helical teeth can become closer to this Circular test line.Owing to helical teeth has outward extending top corner part, and internal tooth also has the tip extended to ring gear axial line, and adjacent top corner and tip towards being almost oppositely arranged, therefore when the top corner part of helical teeth arrives Circular test line, overwhelming majority situation is that helical teeth top corner part slides between two adjacent internal tooths, namely slips in vertical slot.Also have another kind of pole special circumstances, it it is exactly the helical teeth top corner part tip of just encountering internal tooth, now top because of both having one, the most do not exist and make both keep the support of opposition state, namely both will misplace in the moment touched, fundamentally avoid stucking phenomena when helical teeth aligns with internal tooth.After both dislocation, the skew wall of helical teeth just slides along the tooth wall of internal tooth, namely slips into the vertical slot of interior between cog.Along with conical blocks is gradually inserted ring gear, helical teeth the most gradually slips in vertical slot.In sum, the helical teeth of cross section isosceles triangle setting and internal tooth, stucking phenomena when both align can be avoided the occurrence of, namely fundamentally ensure that sleeve and the smoothness of binding post plug-in mounting and reliability, improve installation effectiveness.

In the present embodiment, described locking device includes the locking hole 19 being arranged on patch panel, is fitted with clamping screw 20 in locking hole, also includes that friction tight sleeve pipe 21 locked by the cable core suit with cable, cannula end is installed with terminal board 22, and terminal board is installed with the terminal hole 23 corresponding with locking hole.Being shunk by hydraulic way after sleeve pipe suit cable inner core, such sleeve pipe just can crimp into a single integrated structure with cable inner core, thus realizes electrically connecting with the reliable of cable with sleeve pipe.Sleeve pipe latter end is fixedly connected with terminal board, and terminal board is provided with terminal hole.Sleeve epimere is installed with patch panel, and patch panel is provided with the locking hole corresponding with terminal hole.When needing to connect cable, only locking hole and terminal hole need to be alignd, be inserted into clamping screw and tighten, patch panel and terminal board locking can be made into a single integrated structure, namely achieve the reliable electrical connection of patch panel and cable.This locking device in use, only need to be tightened or unclamp clamping screw, can realize the electrical connection of patch panel and cable, operate the simplest.

It is evenly equipped with along the extended translot that cross section is V-arrangement 24 of terminal board length direction on the sidewall of described terminal board and patch panel snug fit, the horizontal bar 25 that the cross section corresponding with translot is △ shape it is evenly equipped with on the sidewall of patch panel, when terminal hole and locking hole alignment, horizontal bar is correspondingly embedded in translot.For convenience of narration, it is referred to as being adjacent to face by the side that patch panel and terminal board are mutually adjacent to.In this patent, being adjacent on face of terminal board is evenly equipped with some translots, and translot is extended along terminal board length direction.Being adjacent on face of patch panel is evenly equipped with some horizontal bars, the horizontally extending setting of horizontal bar.When terminal hole and locking hole align, horizontal bar is correspondingly embedded in translot.After tightening clamping screw, horizontal bar and translot are by mutual compression fit.The purpose so arranged is to increase terminal board and the contact area of patch panel, reduces both contact resistances, reduces heat generation rate, it is ensured that both are reliably connected.

In the present embodiment, this patent also includes all covering jig arm, upper cartridge, patch panel and terminal board being buckled in the down-set silicone rubber cover of interior oral area 28, silicone rubber cover is installed with the silica gel piece 26 coordinated with fault trough plug-in mounting on the inwall of jig arm, and silica gel piece is provided with the silica gel hole 27 being correspondingly arranged with folder hole and being much larger than folder hole.After silicone rubber cover is set, silicone rubber cover can be detained and cover on above jig arm, upper cartridge, patch panel and terminal board, and by jig arm, upper cartridge, patch panel and terminal board completely ladle cover in silicone rubber cover inner chamber, so can play the effect of weather proof, dust protection, ensure that the cleaning of connecting portion between connecting portion between sleeve and binding post, patch panel and terminal board, also ensure that the reliability of electrical connection between above-mentioned connecting portion.In this patent, silicone rubber cover inwall being installed with a silica gel piece, silica gel piece is vertically arranged.Being provided with a silica gel hole in the middle part of silica gel piece, the size in silica gel hole is much larger than folder hole size.The purpose so arranged, is to facilitate silica gel piece to insert smoothly in the space between two jig arm, and can pass through silica gel hole when fishbolt inserts folder hole.When clamped condition, silica gel piece is by jig arm crimp, and utilizes natural resiliency to increase silica gel piece and the frictional force of jig arm and bed knife, makes silica gel piece be fixed between two jig arm.The benefit so arranged is, during normal use, if run into maintenance, directly can be started by silicone rubber cover thus expose jig arm, upper cartridge, patch panel and terminal board, in order to maintenance.Owing to silica gel piece and jig arm are fixing annexations, therefore when silicone rubber cover is started, silica gel piece can't move relative to jig arm, but elastic deformation occurs in the junction of silica gel piece and silicone rubber cover.When overhauling complete, then silicone rubber cover former state being put down, now the elastic deformation of silica gel piece and silicone rubber cover junction disappears and restores to the original state.So arrange it is also an advantage that, it is simply that by less External Force Acting time, when blowing such as wind, silicone rubber cover still can keep under the resilient support effect of silica gel piece button hood-like state, it is ensured that the reliability of silicone rubber cover protective effect and persistency.

In this patent, described silicone rubber cover sidewall is provided with the n shape opening 29 that the oral area corresponding with terminal board is down-set, and opening is equipped with silica gel thin slice 30, is provided with the thin seam 31 of a up/down perforation in the middle part of thin slice, and described silicone rubber cover top is tip hemisphere 32 upward.In this patent, silicone rubber cover top is set to tip hemisphere upward, can play and avoid dust accretions at silicone rubber cover end face, keep the effect of silicone rubber cover cleaning, provide conveniently for electric power overhaul.The opening of n shape is set at silicone rubber cover avris, aperture position is correspondingly arranged with terminal board, so when the hood-like state of silicone rubber cover button, the connecting portion of terminal board and sleeve pipe can just embed in the opening of n shape, both ensure that all parts was completely detained cover by silicone rubber cover, also silicone rubber cover is made will not to deform because of the extruding of terminal board, the most attractive in appearance.In this patent, n shape opening is laid with one layer of silica gel thin slice, in the middle part of silica gel thin slice, is provided with a thin seam the most extended.When silicone rubber cover button cover jig arm, upper cartridge, patch panel and terminal board, terminal board can enter thin seam.Because the thickness of silica gel thin slice is than the thickness much thinner of silicone rubber cover, therefore elastic more preferable, extensibility is more preferable, the silica gel thin slice of so thin seam both sides will tightly wrap terminal board, serve sealing function, effectively prevent from dust from passing through opening to enter inside silicone rubber cover, further ensure the spatter property of jig arm, upper cartridge, patch panel and terminal board.

Claims (7)

1. null1. the electrical power connection device that can reduce contact resistance，It is characterized in that: include with low pressure kettle head (1) binding post (2) suit coordinate there is plastic sleeve (3)，Sleeve (3) side is provided with the fault trough (4) sleeve lateral wall cut off and forms two dilapidated walls (5) corresponding with fault trough (4)，It is installed with along dilapidated walls (5) outward extending jig arm (6) on sleeve (3) outer wall corresponding with dilapidated walls (5)，Two jig arm (6) are provided with the folder hole (7) of correspondence，The fishbolt (8) being clamped on binding post (2) by sleeve (3) by jig arm (6) it is fitted with in folder hole (7)，Upwardly extending patch panel (9) it is installed with on sleeve (3) opposite side outer wall，Patch panel (9) is connected by locking device cable (10)，Also include jig arm (6)、Sleeve (3) top、Patch panel (9) and locking device all cover and are buckled in the down-set silicone rubber cover of interior oral area (28)，Silicone rubber cover (28) is installed with, on the inwall of jig arm (6), the silica gel piece (26) coordinated with fault trough (4) plug-in mounting，Silica gel piece (26) is provided with the silica gel hole (27) being correspondingly arranged and being much larger than folder hole (7) with folder hole (7).
2. The electrical power connection device of contact resistance can be reduced the most as claimed in claim 1, it is characterized in that: described binding post (2) includes the threaded post (11) being installed in low pressure kettle head (1) bottom porcelain seat (12), threaded post (11) upper end is coaxially installed with the cylindrical stopper (13) thinner than binding post (2), inserting column (13) periphery is evenly equipped with the most extended perpendicular tooth (14), sleeve (3) inwall epimere is coaxially installed with ring gear (15), ring gear internal diameter is equal with inserting column external diameter, it is equipped with on ring gear (15) inwall and erects tooth (14) vertical slot (16) that plug-in mounting coordinates up and down.
3. The electrical power connection device of contact resistance can be reduced the most as claimed in claim 2, it is characterized in that: described inserting column (13) upper end is coaxially installed with tip conical blocks (17) upward, the helical teeth (18) extended to periphery, bottom from conical blocks (17) tip it is equipped with, the round and smooth connection corresponding with perpendicular tooth (14) upper end of helical teeth (18) lower end on the conical surface of conical blocks (17).
4. The electrical power connection device of contact resistance can be reduced the most as claimed in claim 3, it is characterized in that: the cross section of described helical teeth (18) and perpendicular tooth (14) is the isosceles triangle that drift angle is arranged outwardly, the cross section of the adjacent slot walls of adjacent vertical slot also in the drift angle corresponding with perpendicular tooth (14) towards the isosceles triangle of ring gear axial line.
5. 5. the electrical power connection device that can reduce contact resistance as described in claim 1-4 any claim, it is characterized in that: described locking device includes the locking hole (19) being arranged on patch panel (9), clamping screw (20) it is fitted with in locking hole (19), also include that friction tight sleeve pipe (21) locked by the cable core suit with cable (10), sleeve pipe (21) end is installed with terminal board (22), and terminal board (22) is installed with the terminal hole (23) corresponding with locking hole (19).
6. The electrical power connection device of contact resistance can be reduced the most as claimed in claim 5, it is characterized in that: be evenly equipped with along the extended translot that cross section is V-arrangement (24) of terminal board (22) length direction on the sidewall of described terminal board (22) and patch panel (9) snug fit, the horizontal bar that cross section be △ shape (25) corresponding with translot (24) it is evenly equipped with on the sidewall of patch panel (9), when terminal hole (23) and locking hole (19) alignment, horizontal bar (25) is correspondingly embedded in translot (24).
7. The electrical power connection device of contact resistance can be reduced the most as claimed in claim 6, it is characterized in that: described silicone rubber cover (28) sidewall is provided with n shape opening (29) that the oral area corresponding with terminal board (22) is down-set, silica gel thin slice (30) it is equipped with on opening (29), thin slice (30) middle part is provided with the thin seam (31) of a up/down perforation, and described silicone rubber cover (28) top is tip hemisphere (32) upward.