The pressure regulator and carbon brush changing method of a kind of balance abrasion, switching method of discrimination
Technical field
The present invention relates to electric power project engineering field, and in particular to a kind of pressure regulator and carbon brush switching with balance abrasion
Method, switching method of discrimination.
Background technology
Pressure regulator is similar with the function of transformer, is all the conversion for carrying out voltage.From pressure regulator unlike transformer
The voltage of output end output can be adjusted.In the power supply-distribution system of rural area, due to long distance powedr transmission, voltage loss is tight
Weight, power supply end does not often reach predetermined voltage, therefore carries out voltage stabilizing using pressure regulator.During electrical test, distribution substation
The interior equipment with different voltage class, it is therefore desirable to the power supply power supply to the device of different voltages, pressure regulator can just play weight
The effect wanted.
In above-mentioned application process, although the output of pressure regulator be from 0 to maximum, but be applied in real process
Voltage output value be in some specific a small range.Therefore in the case of long-term use, be commonly used that
Divide and serious wear just occurs, the consequence for causing is exactly that equipment is burned.Even if other parts are intact cannot also to reuse
.
A kind of carbon brush contact self coupling type exchange based on segmental variable cross-section winding of Application No. 201310191322.4
Pressure regulator, exactly weares and teares to solve the problems, such as coil.Its solution is the cable winding using varying cross-section in coil
Diverse location, its problem for existing be exactly cable core the different phenomenon that can be caused current unevenness and generate heat of thickness.
A kind of improved annular pressure regulator of Application No. 200620114970.5, using the one of doublewound form design
Pressure regulator is planted, big voltage range is set as an internal winding, and the adjustment voltage design of small range is an outside winding use
Contacted in carbon brush.Its problem for solving is exactly to come elastic making external coil winding, section according to the voltage output range selected
Cost is saved.But still can't resolve the abrasion inequality problem of coil.Therefore design one kind is prevented from coil excessive wear
Balance abrasion pressure regulator turn into a kind of urgent requirement.
The content of the invention
The technical problem to be solved in the present invention is:Pressure regulator and carbon brush changing method there is provided a kind of balance abrasion, cut
Method of discrimination is changed, the pressure regulator can select to use different carbon brush to enable that coil windings are worn and torn in a balanced way, prolong with this
The service life of pressure regulator long.
The technical scheme of the technical problem to be solved in the present invention is:
A kind of pressure regulator of balance abrasion, including, housing, pointer, dial, carbon brush, central rotating shaft, patch panel, ring
Shape iron core and it is provided with limit between the coil windings for being provided with facet on its surface, the lead-out wire at coil windings head and the tail two ends
Position block, it is characterised in that:The central rotating shaft includes upper rotating shaft, lower rotary shaft and rotating shaft connecting rod, and the upper rotating shaft includes upper turn
Axle portion and upper Plug Division, upper shaft are provided with controller, current transformer in the top of upper Plug Division, the patch panel.
The lower rotary shaft includes two parts in lower rotary shaft portion and lower inlaying grafting part, and lower inlaying grafting part is located at the top in lower rotary shaft portion, described lower turn
Axle portion is pipe, and the lower end in lower rotary shaft portion is arranged on the base of housing bottom, and upper shaft and lower inlaying grafting part are and lower rotary shaft
Portion's external diameter identical cylinder.The center of the lower inlaying grafting part is provided with inserting groove, and outside is provided with a conductive plate and positioned at it
The fixed seat on top, fixed seat at least two, support is provided with inside each fixed seat.The inserting groove is in lower inlaying grafting part
The regular polygon groove that opens up vertically downward of upper surface, the bottom of inserting groove is provided with lower axle connecting hole, the lower axle connecting hole
Insertion to lower rotary shaft portion tube chamber, lower axle connecting hole is internally threaded.The fixed seat is rectangular slat, the length of fixed seat
Degree is less than positive stop to the distance of central rotating shaft, and fixed seat is provided with support perpendicular to the side of inserting groove, the top of fixed seat
Groove, the bottom of support slot is provided with standing groove, and the support slot and standing groove are to connect inserting groove with the two of fixed seat distal side
The rectangular channel of end opening, the width of the width less than support slot of standing groove.The bottom of the standing groove is provided with conductive hole and carbon brush
Hole, near spindle central, the carbon brush hole position is in the conductive hole site on the outside of conductive hole, each standing groove for the conductive hole
Distance apart from lower rotary shaft is identical, and the carbon brush pitch-row on each standing groove is different with a distance from lower rotary shaft.The conductive plate
It is toroidal, including fixed disk, insulating disc, conducting ring and pillar, fixed disk medial surface passes through bearing with lower inlaying grafting part outside
Connection, fixed disk bottom is provided with least two pillars, and the pillar is vertically installed between fixed disk and the bottom of housing, pillar
Upper end be fixedly connected with fixed disk, lower end is fixedly connected with the bottom of housing, and insulating disc is adopted and is made from an insulative material, insulating disc
Positioned at the top of fixed disk and it is fixedly connected, the top of insulating disc is provided with the groove of annular, conducting ring is embedded in the recessed of insulating disc
Inside groove, the upper plane of conducting ring slightly protruding insulating disc.The upper surface middle part of the upper shaft is provided with vertically downward
Circular trough, the bottom surface of circular trough is provided with axle connecting hole, and the upper Plug Division is the regular polygon cylinder matched with inserting groove, on
The one of side in Plug Division is provided with depression bar, and remaining side is provided with support bar, and depression bar and support bar are rectangular strip and hang down
Directly in the side of upper Plug Division.The width of the support bar is less than the width of support slot and more than the width of standing groove, Suo Youzhi
Strut is located in same level.The length of the depression bar is identical with the length of standing groove, and width is pressed less than the width of standing groove
Bar is located at the bottom of horizontal plane where support bar, and is on same perpendicular with the pointer on rotating shaft top is fixed on.
The support is rectangular strip, and its length is more than positive stop to the distance of lower rotary shaft, the upper surface of support and the bottom of support slot
Concordantly, the compression spring that the bottom of support is provided with conductive link, carbon brush connecting rod and is sheathed on conductive link, carbon brush connecting rod,
Compression spring upper end is fixedly connected with support.The conductive link is the cylinder that cross sectional shape is matched with conductive hole, conductive link
Vertical with support lower surface and be fixedly connected, the bottom of conductive link is provided with perpendicular to the upward groove in bottom surface, and groove is used to pacify
Dress carbon brush.The carbon brush connecting rod is the cylinder that cross sectional shape is matched with carbon brush hole, and carbon brush connecting rod is vertical with support lower surface and solid
Fixed connection, the bottom of carbon brush connecting rod is provided with perpendicular to the upward groove in bottom surface, and groove is used to install carbon brush.Upper and lower rotating shaft does not connect
When connecing, the vertical range of lower surface to the coil windings upper surface of carbon brush is vertical more than support lower surface to positive stop upper surface
Straight distance.After upper and lower rotating shaft connection, depression bar pushes one of support, the carbon brush on the carbon brush connecting rod of the support and polishing
Face is electrically connected, and the carbon brush on conductive link is electrically connected with conducting ring, two carbon brush electricity on conductive link and carbon brush connecting rod
Gas is connected, and conducting ring is electrically connected with power output end, and the wire of connection conducting ring and power output end passes through current transformer
Center, the output end of current transformer is electrically connected with controller, and controller according to the size of output current judging carbon
The degree of wear of brush.The rotating shaft length of connecting rod is more than upper axle connecting hole upper end to the distance of lower axle connecting hole lower end, and rotating shaft connects
Bar is provided with block, and bottom is provided with screw thread, and rotating shaft connecting rod top passes through upper axle connecting hole, and bottom is spirally connected with lower axle connecting hole.
Preferably, the upper end of the inside of the lower axle connecting hole is provided with one section of screw thread, and corresponding rotating shaft connecting rod bottom is provided with
One section of screw thread, one section of reach on the rotating shaft connecting rod is identical with the screw thread inside lower axle connecting hole, and its position relationship is:
When upper and lower rotating shaft is connected, the top of the middle correspondence lower axle connecting hole of the screw thread on rotating shaft connecting rod.
Preferably, the both sides of described support bar one end are provided with arc spring lamination, are used to prevent support bar from being shaken inside support slot
It is dynamic.
Preferably, the top of the rotating shaft connecting rod is provided with the cylinder or regular hexagon groove of regular hexagon, is used to use and pulls
Hand or sleeve are operated.
Preferably, the support is provided with two carbon brush connecting rods, and a carbon brush, correspondence are respectively installed in two carbon brush connecting rod lower ends
, it is provided with two carbon brush holes in the bottom of standing groove.
Preferably, the rotating shaft connecting rod bottom centre is provided with upward screw, and screw becomes the screw rod spiral shell of greatly T-shaped with end
Connect in succession, be used to prevent rotating shaft connecting rod from extracting lower axle connecting hole out.
Preferably, the bottom of the support slot is provided with elastomeric pad.
A kind of method of the carbon brush switching of pressure regulator of balance abrasion is comprised the following steps:
Step 1, zero graduation is rotated to by the pointer of pressure regulator;Step 2, rotating shaft connecting rod makes it depart from lower rotary shaft,
Step 3, upper rotating shaft is pulled out from the inserting groove of lower rotary shaft, and upper rotating shaft is rotated a certain angle, and depression bar is shifted into another
Inside standing groove, the angle of rotation is 360 ° of quantity divided by support;Step 4, determines rotating shaft connecting rod and lower rotary shaft behind position
Be spirally connected connection, upper and lower rotating shaft is connected into an entirety.
A kind of carbon brush switching of pressure regulator of balance abrasion is sentenced method for distinguishing and is comprised the following steps:
Step 1, controller gathers the size of current for flowing through carbon brush by current transformer;Step 2, controller is according to flowing through
The size of current of carbon brush selects the coefficient of waste;Step 3, controller calculates wear intensity,Wherein H is abrasion
Degree, I is output current, and Li is coefficient of waste when electric current is I, and Tn is time span when electric current is I;Step 4, works as wear intensity
After reaching setting value, controller starts switching indicator lamp and lights, and points out switching carbon brush;Step 5, wear intensity is returned after carbon brush switching
Zero, and recalculate.
The beneficial effects of the present invention are:
1, the pressure regulator of this balance abrasion selects different carbon brush and facet by switching the placement location of depression bar
Contact, it is ensured that certain part of coil windings is not excessively abraded, with extending service life beneficial effect;
2, the pressure regulator of this balance abrasion has the support of multiple carbon brush according to load selection, make multiple carbon brush simultaneously with
Facet is contacted, with the beneficial effect for preferably adapting to large current load;
3, switching is simple, and the switching of different carbon brush can have both been realized by rotation.
Brief description of the drawings
Fig. 1 is sectional view when lower rotary shaft is separated in a kind of a kind of embodiment of the pressure regulator of balance abrasion of the invention,
Fig. 2 is sectional view when lower rotary shaft is connected in a kind of a kind of embodiment of the pressure regulator of balance abrasion of the invention,
Fig. 3 is a kind of a kind of three-dimensional cutaway view of embodiment lower rotary shaft part of the pressure regulator of balance abrasion of the invention,
Fig. 4 is rotating shaft upward view in a kind of a kind of embodiment of the pressure regulator of balance abrasion of the invention,
Fig. 5 be a kind of pressure regulator of balance abrasion of the invention a kind of embodiment Fig. 2 in a-quadrant enlarged drawing,
Fig. 6 is a kind of a kind of flow chart of embodiment carbon brush switching method of discrimination of the pressure regulator of balance abrasion of the invention.
In figure
12. pointers, 17. coil windings, 18. positive stops,
2. rotating shaft is gone up, shaft on 21., on 22. Plug Division, 23. depression bars, 24. support bars, axle connecting hole on 25.,
3. lower rotary shaft, 31. lower rotary shaft portions, 32. lower inlaying grafting parts, 33. inserting grooves, 34. fixed seats, 35. lower axle connecting holes,
36. support slots, 37. standing grooves, 38. conductive plates, 381. fixed disks, 382. insulating discs, 383. conducting rings, 384.
Post
4. support, 41. conductive links, 42. carbon brush connecting rods, 43. compression springs,
5. rotating shaft connecting rod
6. controller
Specific embodiment
To make technical scheme and beneficial effect clearer, embodiments of the present invention are done further below
Explain in detail.
As shown in Figure 1 and Figure 2, a kind of pressure regulator of balance abrasion, including housing, pointer 12, dial, carbon brush 13, annular
Iron core, patch panel, coil windings 17, central rotating shaft.Coil windings 17 are uniformly looped around on annular core, for anti-blocking
Brush 13 causes power supply short circuit when going to the head end of coil windings 17 or end, is set between the power supply lead wire at the two ends of coil windings 17
Positive stop 18 is put.
Principle of the invention is to contact to reach with the diverse location of facet by the carbon brush 13 switched using diverse location
To the purpose of extension pressure regulator service life.In order to realize the switching between different carbon brush 13, upgrading is done to central rotating shaft and has been changed
Enter.Central rotating shaft includes upper rotating shaft 2 and lower rotary shaft 3 and connects the rotating shaft connecting rod 5 of upper and lower rotating shaft 2,3.In order to detection coil around
The degree of wear of group 17 and carbon brush 13, the method using electric current is differentiated, therefore being provided with patch panel, there is center to process
The summation current transformer of controller 6 of device.
Lower rotary shaft 3 is used to install carbon brush 13, and upper rotating shaft 2 is used to select the carbon brush 13 to be used.Upper rotating shaft 2 includes upper rotating shaft
Portion 21 and upper Plug Division 22, top of the upper shaft 21 in upper Plug Division 22.Lower rotary shaft 3 includes lower rotary shaft portion 31 and lower inlaying grafting part
32, lower inlaying grafting part 32 is located at the top in lower rotary shaft portion 31.Lower rotary shaft portion 31 is designed as pipe for the ease of installing and rotating, on
Shaft 21 and lower inlaying grafting part 32 are designed as and the external diameter identical cylinder of lower rotary shaft portion 31.Upper and lower Plug Division 22,32 is used to realize
The grafting of upper and lower rotating shaft 2,3 and the switching of carbon brush 13.Upper and lower shaft 21,31 is used to ensure the vertical of upper and lower rotating shaft 21,31
And stabilization.In the prior art, the top that one bearing carrys out fixed center rotating shaft is installed in scale disk center, at enclosure interior bottom
The center of facial planes is installed by the bottom that fixing bearing carrys out fixed center rotating shaft.
As shown in figure 3, lower inlaying grafting part 32 not only has the effect that connection socket is provided with upper rotating shaft 2, also with offer carbon
The effect of the installation site of brush 13.Therefore lower inlaying grafting part 32 includes following structure:Inserting groove 33, conductive plate 38 and fixed seat 34, Gu
Reservation 34 be located at conductive plate 38 top, the quantity of fixed seat 34 at least two, the inside of each fixed seat 34 is provided with branch
Frame 4.
As its name suggests, inserting groove 33 is exactly a jack that grafting is provided for upper rotating shaft 2.Therefore inserting groove 33 be perpendicular to
The upper surface of lower inlaying grafting part 32 and downward regular polygon groove.The center of inserting groove 33 and the center superposition of lower inlaying grafting part 32.Will
Inserting groove 33 be designed as regular polygon groove be advantageous in that can not only realize grafting can also realize upper and lower rotating shaft 2,3 rotate
Gearing, that is, go up rotating shaft 2 rotate when lower rotary shaft 3 can be driven to rotate.Because upper and lower rotating shaft 2,3 needs to connect using rotating shaft
Bar 5 is attached, therefore is provided with the lower axle connecting hole 35 inside insertion to the tube chamber of lower rotary shaft portion 31 in the bottom of inserting groove 33.For
Lower axle connecting hole 35 inwall of being easy to be connected is provided with screw thread.
Principle of the invention is to contact to reach with the facet of diverse location by switching carbon brush 13 to prevent coil windings 17
Excessive wear, therefore install carbon brush 13 at least two, support 4, the fixed seat 34 at least two of corresponding mounting bracket 4
It is individual.Fixed seat 34 is four in the present embodiment.It is easy to the installation of support 4 for example, fixed seat 34 is designed as rectangular slat,
Support slot 36 is opened up on the top of fixed seat 34, standing groove 37 has been opened up in the bottom of support slot 36.In order to prevent fixed seat
34 are stopped when rotating by positive stop 18, and the length of fixed seat 34 is less than length of the positive stop 18 apart from lower rotary shaft 3.
Fixed seat 34 perpendicular to the side of lower inlaying grafting part 32, both perpendicular to one of side of inserting groove 33.Support slot 36 and put
The groove that groove 37 is both ends open is put, i.e. support slot 36 and the one end of standing groove 37 is connected with inserting groove 33, other end insertion is to admittedly
The side of the distal end of reservation 34.Support slot 36 and standing groove 37 are to be easily installed in upper Plug Division with the purpose that inserting groove 33 is connected
Depression bar 23 and support bar 24 on 22 enter standing groove 37 and support slot 36.Support slot 36 and the insertion of standing groove 37 are to distal side
Purpose be to facilitate support 4 to stretch out fixed seat 34.In order to play a supporting role, the width of support slot 36 is more than standing groove 37
Width.
For the ease of installing carbon brush 13, and the power supply in coil windings 17 will be guided to by conducting ring 383 by carbon brush 13,
The bottom of standing groove 37 is provided with conductive hole 371 and carbon brush hole 372.Conductive hole 371 and carbon brush hole 372 are used to give the bottom of support 4
Conductive link 41 and carbon brush connecting rod 42 space that passes through is provided.Conductive hole 371 is located at the bottom of standing groove 37 in lower rotary shaft 3
The position of the heart, carbon brush hole 372 is located at the outside of conductive hole 371.Conductive hole 371 in each standing groove 37 is in lower rotary shaft 3
The distance of the heart is identical.Principle of the invention is to contact to realize using the longevity with the diverse location of facet by different carbon brush 13
The distance of carbon brush hole 372 inside the extension of life, therefore each standing groove 37 apart from the axle center of lower rotary shaft 3 is different.
Preferably, in order to prevent connection rotating shaft connecting rod 5 when exert oneself it is excessive cause support bar 24 to deform upon, support
The bottom of groove 36 is provided with elastomeric pad.
Conventionally, as carbon brush 13 needs also exist for being slidably connected with the electrical connection of power output end, to understand
Certainly this problem is provided with conductive plate 38 in the bottom of lower inlaying grafting part 32.Conductive plate 38 is toroidal, as shown in figure 5, in order to
It is four parts to solve the problems, such as the fixation of conductive plate 38, electrical connection and insulate 38 points of conductive plate:Fixed disk 381, insulation
Disk 382, conducting ring 383 and pillar 384.The medial surface of fixed disk 381 is connected with the outside of lower inlaying grafting part 32 by bearing.It is fixed
The bottom of disk 381 has been provided with least two pillars 384.Pillar 384 is disposed vertically, and upper end is fixed with the bottom of fixed disk 381 and connected
Connect, lower end is fixedly connected with the bottom of housing.As its name suggests, insulating disc 382 is adopted and is made from an insulative material, and insulating disc 382 is located at
The top of fixed disk 381 and it is fixedly connected.For the ease of the installation of conducting ring 383, annular is opened up on the top of insulating disc 382
Groove, conducting ring 383 is embedded in the inside grooves of insulating disc 382.The ring segment that conducting ring 383 is made for conductive material, it is conductive
The upper plane of the slightly protruding insulating disc 382 of ring 383.Due to fixed disk 381 by pillar 384 be fixed on housing bottom and
Fixed disk 381 has certain height, therefore fixed disk 381 also has the effect of fixed lower rotary shaft 3.
Lower rotary shaft 3 is provided with lower axle connecting hole 35, therefore upper rotating shaft 2 is corresponding is provided with axle connecting hole 25.In upper shaft
The center on 21 top is provided with the circular trough perpendicular to upper table downwards, and having opened up axle in the bottom centre position of circular trough connects
Connect hole 25.Upper axle connecting hole 25 is used for realizing the connection and fixation with lower rotary shaft 3.Realize the contact good with lower rotary shaft 3 and
Upper rotating shaft 2 has been done following improvement by transmission.In order to realize the grafting with lower inlaying grafting part 32, upper Plug Division 22 is section and inserting groove
The regular polygon that 33 sections match.The embodiment cross-sectional profile is square.In order to realize the selection of different carbon brush 13,
Depression bar 23 is provided with one of side of upper Plug Division 2, support bar 24 is provided with remaining side.Depression bar 23 and support
Bar 24 is rectangular strip, and length direction perpendicular to the side of upper Plug Division 22.
Support bar 24 is used for the frame of upper rotating shaft 2 on the top of lower rotary shaft 3 to prevent depression bar 23 to the excessive compression of support 4.Cause
The width of this support bar 24 should be less than the width of support slot 36 and more than the width of standing groove 37.Depression bar 23 is used for inserting putting
Put and be used to press the support 4 for being provided with carbon brush 13 inside groove 37, thus depression bar 23 width of the width less than standing groove 37.Due to
Support 4 with certain length, therefore in order to ensure moving down for the entirety of support 4, the length of depression bar 23 and the length of fixed seat 34
Degree is identical.It is corresponding with the position of pointer 12 the need for due to the position of carbon brush 13 just to can guarantee that the correctly display magnitude of voltage of pointer 12,
Therefore depression bar 23 and pointer 12 are located on same vertical plane, and positioned at the bottom of the place plane of support bar 24.Pointer 12 is located at
The top of upper rotating shaft 2 and it is fixedly connected with upper rotating shaft 2.Now, carbon brush 13, depression bar 23, pointer 12 are just in same vertical
In plane.
Preferably, in order to prevent support bar 24 in the inside shaking of support slot 36, support bar 24 distal end it is perpendicular
Nogata to both sides be provided with arc spring lamination.
Support 4 is not only used to install the running orbit that carbon brush 13 also needs to limit carbon brush 13, therefore the length of support 4 is more than
The length of the inner distance lower rotary shaft 3 of positive stop 18.Insertion standing groove 37 and the contact stable with depression bar 23 for convenience,
Support 4 is designed as rectangular strip.In order to install carbon brush 13 and guide on conductive plate 38 power supply of carbon brush 13, in support 4
Bottom is provided with conductive link 41, carbon brush connecting rod 42 and compression spring 43.
Conductive hole 371 is passed through for the ease of conductive link 41, conductive link 41 is the shape phase of cross section and conductive hole 371
The cylinder of matching.Conductive link 41 is perpendicular to the lower surface of support 4 and the base plane of standing groove 37, the upper end of conductive link 41
It is fixedly connected with support 4, lower end is connected through conductive hole 371 with carbon brush 13.For the ease of the installation of carbon brush 13, in conductive link
41 bottom is provided with perpendicular to the upward groove of base plane, and carbon brush 13 is installed in a groove.The carbon being connected with conductive link 41
Brush 13 is to the electrical connection with the realization slip of conducting ring 383.
Carbon brush hole 372 is passed through for the ease of carbon brush connecting rod 42, carbon brush connecting rod 42 is the shape phase of cross section and carbon brush hole 372
The cylinder of matching.Carbon brush connecting rod 42 is perpendicular to the lower surface of support 4 and the base plane of standing groove 37, the upper end of carbon brush connecting rod 42
It is fixedly connected with support 4, lower end is connected through carbon brush hole 372 with carbon brush 13.For the ease of the installation of carbon brush 13, in carbon brush connecting rod
42 bottom is provided with perpendicular to the upward groove of base plane, and carbon brush 13 is installed in a groove.The carbon being connected with carbon brush connecting rod 42
Brush 13 is to the electrical connection with facet realization slip.
Compression spring 43 is used to supporting support 4, to ensure that the carbon brush 13 when not selected of support 4 is not contacted simultaneously with facet
And ensure that support 4 is concordant with the bottom of support slot 36.Compression spring 43 is set in conductive link 41 and carbon for the ease of installing
On brush connecting rod 42, and the upper end of compression spring 43 is fixedly connected with support 4, and lower end abuts with the bottom of standing groove 37.
Preferably, in order to adapt to the requirement of high current, the bottom of a support 4 is provided with two carbon brush connecting rods wherein
42, a carbon brush 13 is respectively installed in two lower ends of carbon brush connecting rod 42.Depression bar 23 can be adjusted to installation two when loading larger
Increasing the load-carrying ability of pressure regulator in the standing groove 37 of the support 4 of individual carbon brush 13.It is corresponding, set in the bottom of standing groove 37
There are two carbon brush grooves 372.
When upper and lower rotating shaft 2,3 is not connected, i.e., non-selected any one carbon brush 13 when, in order to realize positive stop
The effect of the 18 restriction running orbit of carbon brush 13, the lower surface of carbon brush 13 is more than to the vertical range of the upper surface of coil windings 17
Vertical range of the lower surface of support 4 to the upper surface of positive stop 18.
After upper and lower rotating shaft 2,3 is connected, depression bar 23 presses down on one of support 4, on the carbon brush connecting rod 42 of support 4
The carbon brush 13 of installation is contacted with facet, realizes the electrical connection of carbon brush 13 and coil windings 17.Simultaneously on conductive link 41
Carbon brush 13 be electrically connected with conductive plate 38.Carbon brush 13 on conductive link 41 and carbon brush connecting rod 42 is electrically connected by wire.
Conducting ring 383 on conductive plate 38 causes power output end by wire, and the wire for connecting conducting ring 383 and power output end is worn
The center of overcurrent transformer.The lead end of current transformer is electrically connected with controller 6.
In order to realize the firm connection of upper and lower rotating shaft 2,3, the length of rotating shaft connecting rod 5 is upper more than upper axle connecting hole 25
Hold the distance of the lower end of lower axle connecting hole 35.In order to prevent the slippage of rotating shaft connecting rod 5, it is provided with the upper end of rotating shaft connecting rod 5
Block.It is provided with and the screw thread matched in lower axle connecting hole 35 in the bottom of rotating shaft connecting rod 5 in order to be able to make connection firm.Rotating shaft connecting rod
5 tops pass through upper axle connecting hole 25 and inserting groove 33, and bottom is spirally connected with lower axle connecting hole 35.
Preferably, for the ease of preferably extracting rotating shaft connecting rod 5 when depression bar 23 is changed and can flexibly rotate,
The upper end of the inside of lower axle connecting hole 35 is provided with one section of screw thread.The corresponding bottom in rotating shaft connecting rod 5 is provided with one section of screw thread.Rotating shaft
Screw thread on connecting rod 5 meets and requires:When upper and lower rotating shaft 2,3 is connected, the centre of the screw thread of the bottom of rotating shaft connecting rod 5 is located at
The exit on the top of lower axle connecting hole 35.
Preferably, rotating shaft connecting rod 5 is connected with being spirally connected for lower axle connecting hole 35 for convenience, is set on the top of rotating shaft connecting rod 5
There are the cylinder or groove of regular hexagon.So that sleeve or hex tool can be used when rotating shaft connecting rod 5.
Preferably, in order to prevent rotating shaft connecting rod 5 from deviating from lower axle connecting hole 35, while the installation of rotating shaft connecting rod 5 is not disturbed,
The bottom centre of rotating shaft connecting rod 5 is provided with perpendicular to the upward screw in bottom surface, and the inside of screw is mounted with screw rod.It is anti-in order to reach
The abjection lower axle of rotation stop axle connecting rod 5 connecting hole 35, the aperture of the external diameter more than lower axle connecting hole 35 of the end of screw rod.
A kind of method of the carbon brush switching of pressure regulator of balance abrasion is comprised the following steps:
Step 1, zero graduation is rotated to by the pointer 12 of pressure regulator.The operation is used to be positioned with convenient to fixed seat 34
Upper rotating shaft 2 carries out selecting the support 4 in fixed seat 34;
Step 2, rotating shaft connecting rod 5 makes it depart from lower rotary shaft 3.Rotating shaft connecting rod 5 makes it be released with lower rotary shaft 3
Be spirally connected connection, the extraction of rotating shaft 2 in convenience;
Step 3, upper rotating shaft 2 is pulled out from lower rotary shaft 3, upper rotating shaft 2 upper Plug Division 22 extract inserting groove 33 after on
Rotating shaft 2 can both depart from lower rotary shaft 3 and rotate alone, shift to separately depression bar 23 by now upper rotating shaft 2 is rotated a certain angle
Inside one standing groove 37, the angle of rotation is determined by the number of support 4, specially 360 ° of numbers divided by support 4;
Step 4, determines rotating shaft connecting rod 5 and lower rotary shaft 3 to be spirally connected to be connected behind position to make upper and lower rotating shaft 2,3 connect into one
It is overall.
As shown in fig. 6, a kind of carbon brush switching method of discrimination of pressure regulator of balance abrasion is comprised the following steps:
Step 1, controller 6 gathers the size of current for flowing through carbon brush 13 by current transformer;
Step 2, controller 6 selects the coefficient of waste according to the size of current for flowing through carbon brush 13;
Step 3, controller 6 calculates wear intensity,Wherein H is wear intensity, and I is output current, and Li is
Coefficient of waste when electric current is I, Tn is time span when electric current is I;
Step 4, after wear intensity reaches setting value, controller 6 starts switching indicator lamp and lights, and points out switching carbon brush 13;
Step 5, wear intensity is zeroed after carbon brush 13 switches, and recalculates.Above step is repeated after wear intensity zero.
In sum, only presently preferred embodiments of the present invention, not for limiting the scope of the present invention, by above-mentioned
Description, relevant staff can carry out various change without departing from the scope of the technological thought of the present invention' completely
More and modification.Technical scope of the invention is not limited to the content on specification, all claimed range institutes under this invention
Shape, construction, feature and the spiritual so-called impartial change stated and modification, all should include and scope of the presently claimed invention
It is interior.