Pressure regulator and carbon brush switching method, the switching method of discrimination of a kind of balance abrasion
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.The pressure regulator unlike transformer
The voltage of output end output can adjust.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 which the power supply power supply to the device of different voltages, pressure regulator can play weight
The effect wanted.
In above-mentioned application process, although the output of pressure regulator is from 0 to maximum, it is applied in real process
Voltage output value simply in some specific a small range.Therefore in the case of long-term use of, be commonly used that
Point serious wear just occurs, caused by consequence be exactly that equipment is burned.It is that intact can not also reuse even if other parts
.
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 in order to solve the problems, such as coil abrasion.Its solution method is the cable winding using varying cross-section in coil
Diverse location, the problem of it is present be exactly cable core the thickness difference phenomenon that can cause current unevenness and generate heat.
A kind of improved annular pressure regulator of Application No. 200620114970.5, using the one of doublewound form design
Kind pressure regulator, big voltage range are set as an internal winding, and the adjustment voltage design of small range is used for an outside winding
Contacted in carbon brush.It solves the problems, such as to be exactly to come elastic making external coil winding, section according to the voltage output range selected
Cost is saved.But it still can't resolve the abrasion inequality problem of coil.Therefore design one kind can prevent coil excessive wear
The pressure regulator of balance abrasion turn into a kind of urgent requirement.
The content of the invention
The technical problem to be solved in the present invention is:Provide a kind of pressure regulator of balance abrasion and carbon brush switching method, cut
Method of discrimination is changed, the pressure regulator can select to use different carbon brush to enable the balanced abrasion of coil windings, prolong with this
The service life of long pressure regulator.
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 between the coil windings provided with facet on its surface, the lead-out wire at coil windings head and the tail both ends be provided with limit
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 installed 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
Penetrate to the tube chamber in lower rotary shaft portion, lower axle connecting hole and be internally threaded.The fixed seat is rectangular slat, the length of fixed seat
Degree is less than positive stop and is provided with support perpendicular to the side of inserting groove, the top of fixed seat to the distance of central rotating shaft, fixed seat
Groove, the bottom of support slot are provided with standing groove, and the support slot and standing groove are the two of connection inserting groove and fixed seat distal side
The rectangular channel of end opening, the width of standing groove are less than the width of support slot.The bottom of the standing groove is provided with conductive hole and carbon brush
Hole, the conductive hole is close to spindle central, and the carbon brush hole position is in the conductive hole site on the outside of conductive hole, each standing groove
Distance apart from lower rotary shaft is identical, and the carbon brush pitch-row on each standing groove is different from a distance from lower rotary shaft.The conductive plate
For toroidal, including fixed disk, insulating disc, conducting ring and pillar, fixed disk medial surface on the outside of lower inlaying grafting part with passing through bearing
Connection, fixed disk bottom are 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, which is adopted, to be 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, and 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 are provided with upper axis connection 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 hung 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 less than the width of standing groove, pressure
The bottom of horizontal plane where bar is located at support bar, and be in the pointer for being fixed on rotating shaft top on same perpendicular.
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 bottom of support is provided with conductive link, carbon brush connecting rod and is sheathed on conductive link, the compression spring on carbon brush connecting rod,
Compression spring upper end is fixedly connected with support.The cylinder that the conductive link matches for cross sectional shape 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 pacifying
Fill carbon brush.The carbon brush connecting rod is the cylinder that cross sectional shape matches 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 are provided with perpendicular to the upward groove in bottom surface, and groove is installing 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 more than support lower surface hanging down to positive stop upper surface
Straight distance.After upper and lower rotating shaft connection, depression bar pushes one of support, carbon brush and polishing on the carbon brush connecting rod of the support
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 for connecting conducting ring and power output end passes through current transformer
Center, the output end of current transformer is electrically connected with controller, and controller judges carbon to the size according to output current
The degree of wear of brush.The rotating shaft length of connecting rod is more than upper axis connection hole upper end and connected to the distance of lower axle connecting hole lower end, rotating shaft
Bar is provided with block, and bottom is provided with screw thread, and rotating shaft connecting rod top passes through upper axis connection 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 connects, the top of the middle corresponding 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, 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 pulled to use
Hand or sleeve are operated.
Preferably, the support is provided with two carbon brush connecting rods, and a carbon brush is respectively installed in two carbon brush connecting rod lower ends, corresponding
, 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, 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 comprises the following steps:
Step 1, the pointer of pressure regulator is rotated into zero graduation;Step 2, rotating shaft connecting rod, it is made to depart from lower rotary shaft,
Step 3, upper rotating shaft is pulled out out of lower rotary shaft inserting groove, upper rotating shaft is rotated a certain angle, depression bar is shifted to another
Inside standing groove, the angle of rotation is 360 ° divided by the quantity of support;Step 4, determine 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 comprised the following steps:
Step 1, controller flows through the size of current of carbon brush by current transformer collection;Step 2, controller is according to flowing through
The size of current selection coefficient of waste of carbon brush;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, wear intensity is worked as
After reaching setting value, controller starts switching indicator lamp and lighted, and prompts 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, ensure that certain part of coil windings is not excessively abraded, have and extend service life beneficial effect;
2, the pressure regulator of this balance abrasion according to support of the load selection with multiple carbon brush, make multiple carbon brush simultaneously with
Facet contacts, and has 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
Sectional view when Fig. 1 is lower rotary shaft separation in a kind of a kind of embodiment of the pressure regulator of balance abrasion of the present invention,
Sectional view when Fig. 2 is lower rotary shaft connection in a kind of a kind of embodiment of the pressure regulator of balance abrasion of the present invention,
Fig. 3 is a kind of a kind of local three-dimensional cutaway view of embodiment lower rotary shaft of the pressure regulator of balance abrasion of the present 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 present invention,
Fig. 5 is a-quadrant enlarged drawing in a kind of a kind of embodiment Fig. 2 of the pressure regulator of balance abrasion of the present invention,
Fig. 6 is a kind of a kind of flow chart of embodiment carbon brush switching method of discrimination of pressure regulator of balance abrasion of the present invention.
In figure
12. pointer, 17. coil windings, 18. positive stops,
2. rotating shaft on, shaft on 21., on 22. plug division, 23. depression bars, 24. support bars, axis connection 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 slot, 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.
Embodiment
To make technical scheme and beneficial effect clearer, embodiments of the present invention are done below further
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 both ends of coil windings 17
Positive stop 18 is put.
The principle of the present invention is to be contacted by switching using the carbon brush 13 of diverse location with the diverse location of facet, to reach
To the purpose for extending 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 the rotating shaft connecting rod 5 of the upper and lower rotating shaft 2,3 of connection.In order to detection coil around
The degree of wear of group 17 and carbon brush 13, using the method for differentiating electric current, therefore there is provided have central processing in patch panel
The summation current transformer of controller 6 of device.
Lower rotary shaft 3 is to install carbon brush 13, and upper rotating shaft 2 is selecting the carbon brush 13 to be used.Upper rotating shaft 2 includes upper rotating shaft
Portion 21 and upper plug division 22, upper shaft 21 is on the top of 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 realizing
The grafting of upper and lower rotating shaft 2,3 and the switching of carbon brush 13.Upper and lower shaft 21,31 is ensureing the vertical of upper and lower rotating shaft 21,31
Stably.In the prior art, the top of fixed center rotating shaft is come in scale disk center one bearing of installation, at enclosure interior bottom
The center installation fixing bearing of facial planes comes the bottom of fixed center rotating shaft.
As shown in figure 3, lower inlaying grafting part 32 not only has the function that to provide connection socket with upper rotating shaft 2, also have and carbon is provided
Brush the effect of 13 installation sites.Therefore lower inlaying grafting part 32 includes following structure:Inserting groove 33, conductive plate 38 and fixed seat 34, Gu
Reservation 34 is located at the top of conductive plate 38, and 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 is designed as regular polygon groove and is advantageous in that not only realize that grafting can also realize that upper and lower rotating shaft 2,3 rotates
Gearing, i.e., upper rotating shaft 2 can drive lower rotary shaft 3 to rotate when rotating.Because upper and lower rotating shaft 2,3 needs to connect using rotating shaft
Bar 5 is attached, therefore is provided with insertion to the lower axle connecting hole 35 inside the tube chamber of lower rotary shaft portion 31 in the bottom of inserting groove 33.For
The inwall of lower axle connecting hole 35 of being easy to be connected is provided with screw thread.
The principle of the present 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.In order to which example is easy to the installation of support 4, fixed seat 34 is designed as rectangular slat,
Support slot 36 has been 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 less than length of the positive stop 18 apart from lower rotary shaft 3 when rotating by the stop of positive stop 18, the length of fixed seat 34.
Fixed seat 34 is 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, and the other end is penetrated to solid
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 connects
Depression bar 23 and support bar 24 on 22 enter standing groove 37 and support slot 36.Support slot 36 and standing groove 37 are penetrated 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 giving 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 are 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.The principle of the present invention is to be contacted by different carbon brush 13 with the diverse location of facet to realize using the longevity
The extension of life, therefore distance of the carbon brush hole 372 inside 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, supporting
The bottom of groove 36 is provided with elastomeric pad.
Conventionally, as the electrical connection of carbon brush 13 and power output end needs also exist for being slidably connected, 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
The fixation, electrical connection and insulation for solving the problems, such as conductive plate 38 divide conductive plate 38 for four parts: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 the bottom of upper end and fixed disk 381, which is fixed, to be connected
Connect, lower end is fixedly connected with the bottom of housing.As its name suggests, insulating disc 382, which is adopted, 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 has been opened up on the top of insulating disc 382
Groove, conducting ring 383 be embedded in insulating disc 382 inside grooves.Conducting ring 383 is ring segment made of conductive material, 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 function that fixed lower rotary shaft 3.
Lower rotary shaft 3 is provided with lower axle connecting hole 35, therefore is provided with upper axis connection hole 25 corresponding to upper rotating shaft 2.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 axis connection 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 is perpendicular to the side of upper plug division 22.
Support bar 24 is used for the upper frame of 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 the support 4 of carbon brush 13 is installed to press inside groove 37, therefore the width of depression bar 23 is less than the width of standing groove 37.Due to
Support 4 has certain length, therefore is moved down to ensure that support 4 is overall, the length of depression bar 23 and the length of fixed seat 34
Spend identical.Because the needs of the position of carbon brush 13 and the position correspondence of pointer 12 just can guarantee that pointer 12 correctly shows magnitude of voltage,
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.Contact in order to facilitate insertion standing groove 37 and with depression bar 23 stably,
Support 4 is designed as rectangular strip.In order to install carbon brush 13 and guide to the power supply of carbon brush 13 on conductive plate 38, 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 cross section and the shape phase of 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 and installed in a groove perpendicular to the upward groove of base plane, carbon brush 13.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 and installed in a groove perpendicular to the upward groove of base plane, carbon brush 13.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 to supporting support 4, to ensure that the carbon brush 13 when not selected of support 4 does not contact 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 installation
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 the lower end of two carbon brush connecting rods 42.Depression bar 23 can be adjusted to installation two when loading larger
To increase 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., any one non-selected carbon brush 13 when, in order to realize positive stop
The effect of the 18 restriction running orbit of carbon brush 13, the vertical range of lower surface to the upper surface of coil windings 17 of carbon brush 13 are more than
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 connects, 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 contacts 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 leads to 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 more than the upper of upper axis connection 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.In order to make connection firm the screw thread with being matched in lower axle connecting hole 35 is provided with the bottom of rotating shaft connecting rod 5.Rotating shaft connecting rod
5 tops pass through upper axis connection 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 changing depression bar 23 and can flexibly rotate,
The upper end of the inside of lower axle connecting hole 35 is provided with one section of screw thread.It is corresponding to be provided with one section of screw thread in the bottom of rotating shaft connecting rod 5.Rotating shaft
Screw thread on connecting rod 5 meets to require:When upper and lower rotating shaft 2,3 connects, 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, it is connected with being spirally connected for lower axle connecting hole 35 in order to facilitate rotating shaft connecting rod 5, is set on the top of rotating shaft connecting rod 5
There are the cylinder or groove of regular hexagon.So as to which 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 is mounted with screw rod perpendicular to the upward screw in bottom surface, the inside of screw.It is anti-in order to reach
Rotation stop axle connecting rod 5 deviates from lower axle connecting hole 35, and the external diameter of the end of screw rod is more than the aperture of lower axle connecting hole 35.
A kind of method of the carbon brush switching of pressure regulator of balance abrasion comprises the following steps:
Step 1, the pointer 12 of pressure regulator is rotated into zero graduation.The operation to fixed seat 34 being positioned with convenient
Upper rotating shaft 2 carries out selecting the support 4 in fixed seat 34;
Step 2, rotating shaft connecting rod 5, it is made to 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, extracted in the upper plug division 22 of upper rotating shaft 2 on after inserting groove 33
Rotating shaft 2 can both depart from lower rotary shaft 3 and rotate alone, and now upper rotating shaft 2 rotates a certain angle and can shift to depression bar 23 separately
Inside one standing groove 37, the angle of rotation is determined by the number of support 4, the number of specially 360 ° divided by support 4;
Step 4, determine rotating shaft connecting rod 5 to be spirally connected to be connected with lower rotary shaft 3 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 comprises the following steps:
Step 1, controller 6 flows through the size of current of carbon brush 13 by current transformer collection;
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 are time span when electric current is I;
Step 4, after wear intensity reaches setting value, controller 6 starts switching indicator lamp and lighted, and prompts 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 summary, only presently preferred embodiments of the present invention, not it is used 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 change.The technical scope of the present invention is not limited to the content on specification, all claimed range institutes under this invention
The shape stated, construction, feature and the so-called equivalent changes and modifications of spirit, all should include and scope of the presently claimed invention
It is interior.