CN110994316A - Automatic switching type electric carbon brush and using method thereof - Google Patents
Automatic switching type electric carbon brush and using method thereof Download PDFInfo
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- CN110994316A CN110994316A CN201911299269.3A CN201911299269A CN110994316A CN 110994316 A CN110994316 A CN 110994316A CN 201911299269 A CN201911299269 A CN 201911299269A CN 110994316 A CN110994316 A CN 110994316A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/26—Solid sliding contacts, e.g. carbon brush
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/36—Connections of cable or wire to brush
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/08—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by sliding current collector along winding
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Abstract
An automatic switching type electric carbon brush and a using method thereof comprise a central rotating shaft, a rotation driving device, a rotating arm, an electric push rod, a power transmission plate and a controller. The rotation driving device drives the central rotating shaft to rotate under the control of the controller. And the electric push rod pops up the push rod to contact the power receiving device after detecting that the carbon brush rotates in place. The invention belongs to the field of electrical equipment, and has the beneficial effect of reducing friction to reduce abrasion.
Description
Technical Field
The invention relates to the field of electrical equipment, in particular to an automatic switching type electric carbon brush, a using method thereof and a non-contact multi-coil voltage regulating device with prolonged service life.
Background
Carbon brushes are a component that is often used in the field of electric machines or in the field of voltage regulators. In particular, carbon brushes are of great importance in the construction of electrical machines. However, the carbon brush itself has wear, and therefore, the carbon brush needs to be replaced with a new one after a certain period of use. The traditional voltage regulator mainly comprises a voltage regulator shell, a knob, a pointer, a dial, a carbon brush, a support, an annular iron core, a wiring panel and a central rotating shaft, wherein a coil winding is wound on the annular iron core. The upper surface of the coil winding is provided with a polished surface which is used for realizing the contact with the carbon brush so as to achieve the function of regulating voltage. The pointer and the dial are used for indicating the voltage value. The wiring panel is used for connecting an external power supply and the internal coil winding. In a rural power supply and distribution system, because the voltage loss of a long-distance transmission line is serious, a power supply end often cannot reach a preset voltage, and a voltage regulator is adopted for voltage stabilization. In the electrical test process, the power distribution station is internally provided with equipment with different voltage grades, so that different voltages are needed for supplying power to the equipment, and the voltage regulator can play an important role. In the above application, although the output of the voltage regulator is from 0 to the maximum value, the voltage output value applied in the actual process is only within a certain small range. If the sliding device is frequently used in a sliding mode between 110 and 120 volts, under the condition of long-term use, the frequently used part is seriously abraded, and the equipment is burnt out. Even if the other parts are intact, they cannot be used. Therefore, it is an urgent requirement to design a carbon brush and a voltage regulator apparatus that reduce the wear of the carbon brush and the polished surface.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: an automatic switching type electric carbon brush with non-contact rotation and in-place contact is provided.
The technical scheme of the technical problem to be solved by the invention is as follows: the utility model provides an automatic switching formula electric carbon brush, includes central pivot, its characterized in that:
a rotation driving device: driving the central rotating shaft to rotate;
a rotating arm: one end is fixedly connected with the central rotating shaft;
electric push rod: the carbon brush is arranged at one end of the rotating arm far away from the central rotating shaft, and the end part of the push rod of the electric push rod is provided with a carbon brush;
a current conducting plate: the ring shape is coincident with the axial lead of the central rotating shaft, the lower ring surface of the electricity transmission plate is provided with a conducting ring,
conductive spring plate: the electric push rod and the carbon brush are connected with an external power supply through the conductive elastic sheet and the conductive ring;
a controller: is electrically connected with the rotation driving device and the electric push rod.
Preferably, the conductive elastic sheet and the carbon brush are arranged in parallel at the lower part of the electric push rod, and the electric conduction plate comprises: the electric push rod is arranged at the lower part of the conductive elastic sheet, after the electric push rod acts, the carbon brush is connected with an external power receiving device, the conductive elastic sheet is electrically connected with the conductive ring, and the conductive elastic sheet is connected with the conductive ring.
A non-contact multi-coil voltage regulating device with prolonged service life is characterized in that an automatic switching type electric carbon brush is applied.
Better, still include voltage regulator casing, annular iron core, wiring panel, its characterized in that: at least two groups of segmented coils are wound on the annular iron core end to end adjacently; the number of the switching relays, the switching switches and the limiting devices is the same as that of the breaking coils; an electric carbon brush bracket which drives the carbon brush to contact with the segmented coil at a designated position; the controller, the display and the keys are arranged on the wiring panel; the segmented coil comprises an adjusting coil and a communication coil which are wound in the same direction; the change-over switch is connected with the coil winding of the change-over relay in series and then is connected with two ends of the power supply in parallel; the switching relay comprises two groups of normally open and normally closed contacts, and the leading-out points of adjacent connecting coils and adjacent adjusting coils are connected with the same group of contacts of the switching relay; the leading-out point of the adjusting coil is connected with the common contact, the leading-out point of the connecting coil is connected with the normally closed contact, and the normally open contacts of the two groups of contacts of the switching relay are respectively connected with the zero-live wire of the power supply; the leading-out points of the communication coil, the zero and live wires of the power supply and the contact points of the switching relay are in the same wiring sequence.
Preferably, the device also comprises a limiting device arranged on the inner wall of the shell of the voltage regulator, and the limiting device corresponds to the position of the connection coil to limit the rotating range of the rotating arm; the stop device includes:
limiting the sleeve: the position of the connecting coil is arranged correspondingly, and the connecting coil is fixedly connected with the inner wall of the shell of the voltage regulator;
electromagnet: the limiting sleeve is arranged at one end close to the shell of the voltage regulator inside the limiting sleeve; the coil winding of the electromagnet is connected in parallel with the coil winding of the corresponding switching relay at the corresponding position;
a slide rail: the limiting sleeve is embedded at one end of the limiting sleeve far away from the shell of the voltage regulator and is provided with a sliding hole coaxial with the limiting sleeve;
push rod: the permanent magnet is inserted into the sliding hole, the center of one end of the limiting sleeve positioned in the limiting sleeve is embedded with the permanent magnet, and the periphery of the limiting sleeve is provided with an outer folded edge; a limiting pile is arranged at one end outside the limiting sleeve, and the connecting line of the two ends of the limiting pile and the end part of the connecting coil at the same side passes through the axis line of the central rotating shaft;
when the push rod is ejected out, the limiting pile enters the movement range of the rotating arm to limit the rotation range of the rotating arm;
the limiting device, the electric push rod, the change-over switch and the controller are electrically connected.
Preferably, two ends of the limiting pile are provided with proximity switches.
Preferably, the change-over switch is a relay, a coil winding of the change-over switch is electrically connected with the controller, and a normally open contact of the change-over switch is connected with the coil winding of the change-over relay in series; the method for adjusting the output range of the segmented coil comprises the following steps:
through key selection, setting an adjusted position by combining a liquid crystal display, or starting switching when a controller detects that the use time reaches a set value; the controller controls the corresponding change-over switch to be closed, after the change-over switch is closed, the change-over relay corresponding to the change-over switch is electrified, and the electrified change-over relay has the function of connecting the connected segmented coil with the power supply; the uncharged switching relay plays a role in connecting the segment coils, specifically: the connection coil corresponding to the change-over switch is separated from the adjustment area, and the leading-out points of the two adjacent adjustment coils of the connection coil corresponding to the change-over switch are power supply leading-in end points of the voltage regulator coil winding; and the other adjusting coils and the connecting coil form a complete adjusting area, the coil winding of the switching relay is connected with the coil winding of the electromagnet in series, and the push rod of the limiting device corresponding to the connecting coil connected with the switching relay is popped up to limit the rotating position of the carbon brush.
Preferably, the method for adjusting the output range of the segmented coil comprises the following steps:
when the output range of the segmented coil needs to be adjusted, the setting is carried out through a human-computer interaction interface formed by the keys and the display. Or the controller starts switching according to the use time, namely switching is carried out after the use time T until all the segmented coils are used as the starting points of zero scale; after switching is started, the controller controls the action of a switch corresponding to the connection coil of the selected sectional coil, then the corresponding switching relay acts, the limiting device acts, a push rod of the limiting device pops up, the limiting pile is pushed out, and the rotating arm is limited; after the switching is finished, the controller controls the rotation driving device to rotate, and after the proximity switch on one side of the limiting pile is detected, the rotation driving device is stopped and the position is recorded; the controller controls the rotary driving device to rotate reversely, stops rotating when the proximity switch on the other side of the limiting pile is detected, and records positions which are zero scale and maximum scale.
Preferably, the method for adjusting the output voltage of the voltage regulator in use comprises the following steps:
method one, setting formula output voltage:
the required voltage value is set through a man-machine interaction section formed by the keys and the display, and then the output voltage is started.
And after the controller receives the voltage to be output, the position of the carbon brush is calculated according to the initial position, and the rotation driving device is controlled to rotate so that the carbon brush rotates to the set position. After the carbon brush is in place, the controller controls the electric push rod to act, and then the carbon brush is contacted with the polishing surface to realize the output of voltage;
detecting whether the output voltage is the set voltage or not, and if not, controlling the rotation driving device to rotate to finely adjust the position of the carbon brush so that the output voltage is consistent with the set voltage;
step-by-step voltage output:
an increase key and a decrease key are set,
after the increase button is pressed down, the controller controls the rotation driving device to rotate to the maximum scale, and then the output voltage is increased
After the reduction key is pressed down, the controller controls the rotation driving device to rotate towards the zero scale, and then the output voltage is reduced.
Preferably, each time a key is pressed, the voltage value is increased or decreased to 0.1V.
The invention has the beneficial effects that:
the segmented coils can adjust the output range and prevent a certain area from being excessively worn; and the abrasion between the carbon brush and the polishing surface of the segmented coil is reduced by adopting a non-contact rotating mode.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention
FIG. 2 is a schematic diagram of an embodiment of the present invention
FIG. 3 is a schematic view of a position limiting device according to an embodiment of the present invention
FIG. 4 is a schematic diagram of an embodiment of the present invention
FIG. 5 is an electrical control circuit diagram of an embodiment of the present invention
FIG. 6 is a schematic diagram of the circuit connections of a segment coil according to an embodiment of the present invention
In the figure:
1. limiting piles; 2. a limiting needle is blocked; 3. a limiting device; 4. a segment coil; 41. adjusting the coil; 95. an annular iron core; 94. carbon brushes and a bracket; 92. a pointer; 96. a wiring panel; 30. a permanent magnet; 37. a slide rail; 35. a limiting sleeve; 97. a central rotating shaft; 42. a communication coil; 98. a code-free region; 93. a dial scale; 90. a voltage regulator housing; KL, switching relay; 59. a controller; 62. a current conducting plate; 65. a carbon brush; 69. an electric push rod; 66. a rotation driving device; 63. a rotating arm; 55. a drive circuit; 56. a drive motor; 38. a push rod; 36. one end; an electromagnet; 931. positioning the projection; 901. a positioning groove; 631. a conductive spring plate; 621. conducting rings;
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
An automatic switching electric carbon brush comprising: a rotation drive 66, a rotation arm 63, an electric push rod 69 and a controller 59.
The rotational drive 66 may be provided on the regulator housing 90. The rotation driving device 66 can be a stepping motor, a servo motor or a reluctance motor, and is configured with a corresponding rotation driving module 661, which is electrically connected with the controller to control the rotation driving device 66. Gears or belt pulleys are arranged on the rotating shaft and the central rotating shaft of the motor, and the central rotating shaft 97 is driven to rotate through gear transmission or belt transmission.
The rotating arm 63 is bar-shaped or rod-shaped. One end of the rotating arm 63 is fixedly connected with the central rotating shaft 97; the other end is fixedly connected with an electric push rod 69.
The electric push rod is a linear motion module pushed by a lead screw or by electromagnetism. The electromagnetic lock is an electric push rod for electromagnetically pushing the lock bolt. The electric push rod 69 is vertically disposed, and its movable push rod moves up and down. The end part of the push rod of the electric push rod 69 is provided with a carbon brush 65, the lower part of the carbon brush 65 is superposed with the polished surface of the sectional coil 4, and the carbon brush is in close contact with the polished surface of the sectional coil after the electric push rod is electrified. The power supply of the electric push rod can be realized by adopting a conductive slip ring mode.
In order to electrically connect the carbon brushes to the electric push rod, a current conducting plate 62 is also provided. As shown in fig. 2, the current-carrying plate 62 is fixedly connected to the inside of the upper surface of the regulator housing 90. The electricity transmission plate 62 is a ring-shaped plate, and a conductive ring 621 is disposed on the electricity transmission plate and embedded on the electricity transmission plate. The conducting rings can be arranged in two numbers so as to realize the connection between the electric push rod and the power supply. The upper portion of the rotating arm 63 is provided with a conductive elastic piece 631, which is electrically connected to the carbon brush 65 and slidably connected to the conductive ring 621. The carbon brush can be connected with the output point of the voltage regulator through the conducting ring, the conducting ring is arranged at the moment and is electrically connected with the output end of the voltage regulator, and the conducting ring is connected with the carbon brush through the conducting elastic sheet. Meanwhile, the electric push rod can be connected with a power supply by arranging the conducting ring and the conducting elastic sheet. At this time, two conductive rings and two conductive elastic pieces need to be arranged.
In order to limit the movement track of the rotating arm and prevent short circuit when the rotating arm rotates to the position of the independent communication coil, and meanwhile, the limiting device 3 is used for setting the starting point of the segmented coil 4. Limiting device 3 is located on the inner wall of voltage regulator casing 90, can be located the upper portion side of voltage regulator casing, also can locate the upper portion of side. The position limiting device corresponds to the position of the communication coil 42.
In order to realize automatic control, the controller is electrically connected with the rotation driving device and the electric push rod.
The invention can improve a voltage regulating device, namely a non-contact multi-coil voltage regulating device with prolonged service life, improves the coil winding of the voltage regulating device on the basis of the traditional voltage regulator, and is matched with an auxiliary mechanism suitable for the coil winding. In the prior art, the voltage regulator is mainly composed of a voltage regulator casing 90, a dial 93, a pointer, a carbon brush, a support, an annular iron core 95, a wiring panel 96 and a central rotating shaft 97, wherein a coil winding is wound on the annular iron core 95, the upper surface of the coil winding is provided with a polished surface, and the polished surface is used for achieving the function of regulating voltage by contacting with the carbon brush.
As shown in fig. 1, the present invention includes a regulator casing 90, an annular iron core 95, a wiring panel 96 and a central rotating shaft in the conventional regulator, and further includes an improved coil winding and an automatic switching type electric carbon brush, and a display is provided in order to realize automatic control and a friendly man-machine interface. A rotation driving device 66 for the automatic switching electric carbon brush may be disposed on the voltage regulator housing 90 to drive the central rotating shaft to rotate.
The coil winding includes at least two groups of segment coils 4 wound around the annular core 95 end to end, and the number of the groups of segment coils 4 is four in this embodiment. The segment coil 4 includes an adjustment coil 41 and a communication coil 42 wound in the same direction. All the segment coils 4 are wound in the same direction, have the same number of turns, and are uniformly and closely distributed on the annular iron core 95.
In this embodiment, the connection coil 42 is used to connect the adjustment coil 41 and disconnect the adjustment coil 41, so that the coil winding on the toroidal core is complete and has an input/output end, and when the carbon brush moves to the coil winding end point, that is, when the carbon brush moves to disconnect the connection coil 42 of the adjustment coil 41, the function of preventing short circuit is provided. When the adjusting coil 41 is turned off, the connecting coil 42 is independent and does not serve as a part of the voltage regulation of the voltage regulator, and therefore is not electrified, and the lead terminals of the adjusting coil 41 adjacent to the two ends of the connecting coil serve as the starting point and the ending point of the output of the adjusting voltage, namely zero scale and maximum scale. The control coil 41 as an essential component of the segment coil 4 effects the control of the voltage. Each segment of the adjustment coil 41 has a certain output range, and the output range of each segment of the adjustment coil 41 can be changed by making different connection coils 42 independent. And further, the voltage switching within the common output range can be output in different sections, so that the service life of the voltage regulator is prolonged.
In the invention, the clockwise direction is taken as a reference, the adjusting coil 41 and the connecting coil 42 are mutually spaced and are closely connected at the head end and the tail end, in the clockwise direction, two leading-out points of the adjusting coil 41 are respectively a first adjusting leading-out point 411 and a second adjusting leading-out point 412, and two leading-out points of the connecting coil 42 are respectively a first connecting leading-out point 421 and a second connecting leading-out point 422.
In order to realize the automatic adjustment of the segment coils 4, the same number of switching relays KL and the same number of switching switches and limiting devices 3 as the number of the segment coils 4 are provided. And a controller, a display and keys are also arranged for realizing man-machine interaction. The controller, display and keys may be located on the wiring panel 96 or on the upper portion of the regulator housing. Wherein controller and display, button electrical connection, the controller can adopt the singlechip to design as the treater, also can adopt the PLC module as the controller.
The switching relay is provided with two groups of normally open and normally closed contacts. The number of the switching relays is the same as the number of the segment coils 4, while corresponding to the segment coils 4 one to one.
In order to control the switching relays KL, each switching relay KL is provided with a corresponding switch. The change-over switch is connected in series with a coil winding of the switching relay KL and then connected to a zero line and a live line of a power supply in parallel. The switch and the switch relay connected in series correspond to the same interconnection coil. The change-over switch can be a switch tube or a relay, and a control end of the change-over switch is electrically connected with the controller. The leading-out points of the adjacent connection coil 42 and the adjacent adjusting coil 41 are connected with the same group of contacts of the switching relay, wherein the leading-out point of the adjusting coil 41 is connected with the common contact, the leading-out point of the connection coil 42 is connected with the normally closed contact, and the normally open contacts of the two groups of contacts of the switching relay KL are respectively connected with the zero-fire wire of the power supply. In order to keep the voltage regulator operating stably and reliably, the connection sequence of the leading-out point of the interconnection coil 42, the zero-live line of the power supply and the contact point of the switching relay KL is the same. In order to avoid short circuit when the carbon brush moves to the end part, namely to the zero scale and the maximum scale, the width of the communication coil is larger than that of the carbon brush, so that the short circuit condition can not occur when the carbon brush slides to the end point.
Stop device includes: a limiting sleeve 35, an electromagnet 36, a slide rail 37, a push rod 38 and a limiting pile 1.
The limiting sleeve 35 is tubular, the limiting sleeve 35 is arranged corresponding to the position of the contact coil 42, namely the limiting sleeve 35 is arranged in a sector area formed by two ends of the contact coil and the circle center. The position limiting sleeve 35 may be fixedly connected to the inside of the upper surface of the regulator housing 90.
The electromagnet 36 is arranged at one end, close to the voltage regulator shell 90, inside the limiting sleeve 35; the length direction of the iron core of the electromagnet 36 coincides with the axial direction of the limit sleeve 35. The coil winding of the electromagnet 36 is connected in parallel with the coil winding of the switching relay KL corresponding to the communication coil 42 at the position of the limit sleeve 35.
The slide rail 37 is embedded in one end of the limiting sleeve 35 far away from the regulator housing 90 or the dial 93, and is provided with a slide hole coaxial with the limiting sleeve 35.
The push rod 38 is inserted into the slide hole of the slide rail 37. The center of one end of the push rod 38 positioned in the limiting sleeve 35 is embedded with a permanent magnet 30, and the periphery is provided with an outer folded edge; and one end positioned outside the limiting sleeve 35 is provided with a limiting pile 1. The outward folded edge is used for preventing the push rod from slipping out of the sliding hole. The permanent magnet is matched with the electromagnet, and when the electromagnet is electrified, the opposite surface of the electromagnet and the permanent magnet generates repulsion force to push the push rod out. The connecting line of the two ends of the limiting pile 1 and the end part of the connecting coil 42 on the same side passes through the axis line of the central rotating shaft. The limiting pile is in a long strip shape or an arc shape.
Preferably, two ends of the limiting pile 1 are provided with proximity switches. The proximity switch can adopt a travel switch or an inductive proximity switch. The proximity switch is electrically connected to the controller for sensing the position of the rotating arm 63. Because the limiting pile is located at the position corresponding to the independent connection coil, namely, the connection line of the end part of the connection coil at the same side with the limiting pile 1 passes through the axial lead of the annular iron core 95. The leading-out points of the adjusting coil 41 connected with the two ends of the connection coil are respectively a zero scale leading-out point and a maximum scale leading-out point, and at the moment, the starting point of the segmented coil can be determined when the rotating arm triggers the proximity switch.
The limiting device 3, the electric push rod 69, the change-over switch and the rotation driving device 66 are electrically connected with the controller.
In order to realize automatic switching, as shown in fig. 6 and 5, four switching relays are correspondingly provided, namely a first switching relay KL1, a second switching relay KL2, a third switching relay KL3 and a fourth switching relay KL4, four switching switches are provided, namely a first switching switch 1, a second switching switch 2, a third switching switch 3 and a fourth switching switch 4, four electromagnets are provided, namely a first electromagnet 361, a second electromagnet 362, a third electromagnet 363 and a fourth electromagnet 4, respectively, corresponding limiting devices are provided, wherein the first switching relay KL1, the first switching switch 1 and the first electromagnet 361 correspond to the same interconnection coil 42, other switching relays, switching switches and electromagnets correspond in sequence according to serial numbers, namely four groups of control modules are provided, and each group comprises a segment coil, a switching switch 364 and a fourth switching switch 364 An electromagnet and a change-over switch. Taking a relay as an example of the switch, the coil windings of the first, second, third, and fourth switches are electrically connected to the controller 52. The normally open contact of the first changeover switch 1 and the coil winding of the first changeover relay KL1 are electrically connected in series to the power module 50. The input of the power module 50 is electrically connected to the zero line of the power supply. The first electromagnet 361 and the coil winding of the first switching relay KL1 are connected in parallel. The wiring modes of the other three groups of switching relays, the switching switches and the electromagnets are the same as the wiring mode of the first group.
The switching relay is provided with two groups of normally open and normally closed contacts. The first and second contact outlets 421 and 422 of the two contact points of the interconnection coil are respectively connected with two normally closed contacts of the switching relay KL. In the clockwise direction, the two leading points of the adjusting coil 41 connected to the interconnection coil 42 are a second leading point 412 and a first leading point 411, respectively, and the first and second leading points 411, 412 are electrically connected to two common contacts of the switching relay, respectively. The leading-out points of the four groups of segmented coils 4 are connected with the normally closed contacts and the common contacts of the four switching relays in the same sequence. As shown in fig. 6, a complete coil winding is formed in the entire toroidal core.
In this case, the method of adjusting the output range of the segment coil 4 is:
through key selection, or the controller starts switching when the use time reaches a set value. The controller 52 is provided with a control program and a human-computer interaction program. The output range of a certain segment coil 4 is set by selecting a key.
The controller controls the corresponding change-over switch to be closed, after the change-over switch is closed, the non-electrified change-over relay plays a role in connecting the sectional coil 4, and the electrified change-over relay plays a role in connecting the connected sectional coil 4 with the power supply.
The coil winding of the switching relay is connected with the coil winding of the electromagnet in series, and the push rod of the limiting device corresponding to the connection coil 42 connected with the switching relay is popped up, so that the rotating position of the carbon brush is limited.
The invention introduces the power supply from different positions of the coil winding, thereby realizing the change of the voltage regulation range on the coil.
Example two
In order to electrically connect the carbon brushes to the electric push rod, a current conducting plate 62 is also provided. As shown in fig. 2, the current-carrying plate 62 is fixedly connected to the inside of the upper surface of the regulator housing 90. The electricity transmission plate 62 is a ring-shaped plate, and a conductive ring 621 is disposed on the electricity transmission plate and embedded on the electricity transmission plate. The conducting rings can be arranged in two numbers so as to realize the connection between the electric push rod and the power supply. The upper portion of the rotating arm 63 is provided with a conductive elastic piece 631, which is electrically connected to the carbon brush 65 and slidably connected to the conductive ring 621. The carbon brush can be connected with the output point of the voltage regulator through the conducting ring, the conducting ring is arranged at the moment and is electrically connected with the output end of the voltage regulator, and the conducting ring is connected with the carbon brush through the conducting elastic sheet. Meanwhile, the electric push rod can be connected with a power supply by arranging the conducting ring and the conducting elastic sheet. At this time, two conductive rings and two conductive elastic pieces need to be arranged.
Preferably, in order to ensure the uniform stress of the central rotating shaft and prevent the central rotating shaft from inclining, a balance weight rod is arranged on the other side of the rotating arm 63, the balance weight rod, the rotating arm and the electric push rod have the same weight, and the length of the balance weight rod is shorter than the distance from the limiting device 3 to the central rotating shaft.
The carbon brush is connected with the segmented coil in an electric push rod mode, the carbon brush retracts during rotation, friction with the polishing surface is avoided, and after the carbon brush reaches the designated position, the electric push rod ejects the carbon brush and the polishing surface is contacted. And realizing conduction. As a digital automatic control device, a voltage transformer is required to be arranged to collect an output voltage, and the position of the carbon brush which has contacted with the polishing surface is finely adjusted according to a sampling value of the voltage transformer to achieve a function of accurate output.
Preferably, the carbon brush is connected with the output end of the voltage regulator through a sliding ring or a conducting ring and the like, the sliding ring and the conducting ring are also abraded, and therefore in order to reduce abrasion and prolong the service life, the conducting ring and the conducting elastic sheet are connected in a separated sliding and in-place contact mode. At this time, the electricity transmission plate 62 is fixedly connected to the voltage regulator housing 90, the electricity transmission plate 62 is annular, the electricity transmission plate 62 is embedded with the conductive ring 621, and the electricity transmission plate is located outside the segment coil 4. The lower part of the electric push rod is fixedly connected with the conductive elastic sheet besides the carbon brush. As shown in fig. 4, the conductive ring on the conductive plate 62 is electrically connected to the output end of the voltage regulator, and the conductive elastic sheet is electrically connected to the carbon brush, and since the conductive elastic sheet and the carbon brush move synchronously, the conductive elastic sheet and the carbon brush are directly connected by a wire. When the sliding is carried out, the conductive elastic sheet is separated from the conductive ring, and the carbon brush is separated from the polishing surface of the segmented coil, so that abrasion cannot be generated. After the position is reached, the controller controls the electric push rod 69 to act, the carbon brush 65 is electrically connected with the segment coil 4, the conductive elastic sheet 631 is electrically connected with the conductive ring 621, and meanwhile, the carbon brush 65 is electrically connected with the conductive elastic sheet 631.
The use method of the invention based on the above embodiment is as follows:
and setting a segmented coil where the common output voltage needs to be switched through a human-computer interaction interface formed by a key and a display. Or the controller starts the switching according to the using time, namely after the using time T, the switching is carried out until the connecting coils of all the segmented coils are used as independent coil windings. After the switching is started, the controller controls the action of the selector switch corresponding to the selected contact coil, so that the action of the corresponding selector relay and the action of the limiting device are realized, the push rod 38 of the limiting device corresponding to the contact coil is popped up, and the limiting pile is pushed out to limit the rotating arm. After the limiting piles are pushed out, the limiting piles enter the moving range of the rotating arms, and limitation on the rotating arms 63 is achieved through the crossed moving range.
After the switching is completed, the controller controls the rotation driving device 66 to rotate, stops after detecting the proximity switch on one side of the limit post, and records the angle of the position of the rotating arm. And then the reverse rotation stops when a proximity switch on the other side of the limiting pile is detected, and the position of the rotating arm is recorded. The two positions are the start scale, i.e. the zero scale, and the maximum scale.
Set output voltage:
the required voltage value is set through a man-machine interaction section formed by the keys and the display, and then the output voltage is started.
After the controller receives the voltage to be output, the controller calculates the position of the carbon brush according to the initial position, and controls the rotation driving device 66 to rotate so that the carbon brush rotates to the set position. After the carbon brush is in place, the controller controls the electric push rod to act, and then the carbon brush is contacted with the polishing surface to realize the output of voltage. And then detecting whether the output voltage is the set voltage or not, and if not, finely adjusting the rotating arm to enable the output voltage to be consistent with the set voltage.
Step-by-step voltage output:
and after the reduction key is pressed, the controller controls the rotation driving device to rotate towards the zero scale. The range of stepping can be set as desired, i.e. one voltage value is increased or decreased for each key press.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and various changes and modifications can be made by workers in the light of the above description without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an automatic switching formula electric carbon brush, includes central pivot (97), its characterized in that:
rotation drive device (66): driving the central rotating shaft (97) to rotate;
rotating arm (63): one end is fixedly connected with the central rotating shaft (97);
electric push rod (69): the carbon brush (65) is arranged at one end of the rotating arm (63) far away from the central rotating shaft (97), and the end part of the electric push rod (69) is provided with a carbon brush;
current-carrying plate (62): the ring shape is coincident with the axial lead of the central rotating shaft (97), the lower ring surface of the electricity transmission plate (62) is provided with a conductive ring (621),
conductive spring (631): the electric push rod (69) and the carbon brush (65) are connected with an external power supply through a conductive elastic sheet (631) and a conductive ring (621);
a controller: is electrically connected with the rotation driving device (66) and the electric push rod (69).
2. The automatic switching electric carbon brush according to claim 1, characterized in that:
the conductive elastic sheet (631) and the carbon brush (65) are arranged on the lower part of the electric push rod (69) in parallel, and the electricity transmission plate (62): the conductive elastic sheet (631) is electrically connected with the conductive ring (621).
3. A non-contact multi-coil voltage regulator with an extended service life, characterized in that an automatic switching electric carbon brush according to claim 1 is applied.
4. A service life extended contactless multi-coil voltage regulation device according to claim 3 comprising a voltage regulator housing (90), an annular iron core (95), a terminal panel (96), characterized in that:
at least two groups of segmented coils (4) are wound on the annular iron core (95) end to end adjacently; switching relays (KL) and switching switches and limiting devices (3) which are the same as the breaking coils (4) in number; the electric carbon brush support is used for driving the carbon brush to be in contact with the segmented coil (4) at a specified position; a controller, a display and a key arranged on the wiring panel (96); the segment coil (4) comprises an adjusting coil (41) and a communication coil (42) which are wound in the same direction;
the change-over switch is connected with a coil winding of a switching relay (KL) in series and then connected to two ends of a power supply in parallel; the switching relay (KL) comprises two groups of normally open normally closed contacts, and the leading-out points of the adjacent connection coil (42) and the adjacent adjusting coil (41) are connected with the same group of contacts of the switching relay; the leading-out point of the adjusting coil (41) is connected with the common contact, the leading-out point of the communication coil (42) is connected with the normally closed contact, and the normally open contacts of the two groups of contacts of the switching relay (KL) are respectively connected with the zero-live wire of the power supply; the connection sequence of the leading-out point of the communication coil (42), the zero-live wire of the power supply and the contact of the switching relay (KL) is the same.
5. The non-contact multi-coil voltage regulating device with the service life prolonged according to claim 4, characterized in that:
the limiting device (3) is arranged on the inner wall of the voltage regulator shell (90), and the limiting device (3) is corresponding to the position of the interconnection coil (42) to limit the rotating range of the rotating arm (63);
the limiting device (3) comprises:
limiting sleeve (35): the position of the connecting coil (42) is arranged correspondingly, and the connecting coil is fixedly connected with the inner wall of the voltage regulator shell (90);
electromagnet (36): the limiting sleeve is arranged at one end, close to the shell (90) of the voltage regulator, in the limiting sleeve (35); the coil winding of the electromagnet (36) is connected in parallel with the coil winding of the corresponding switching relay (KL) at the corresponding position;
slide rail (37): the sliding hole is embedded at one end of the limiting sleeve (35) far away from the shell (90) of the voltage regulator and is coaxial with the limiting sleeve (35);
push rod (38): the permanent magnet (30) is embedded in the center of one end of the limiting sleeve (35) which is inserted into the sliding hole, and the outer edge is arranged on the periphery of the limiting sleeve; one end positioned outside the limiting sleeve (35) is provided with a limiting pile (1), and a connecting line between the two ends of the limiting pile (1) and the end part of the interconnection coil (42) on the same side passes through the axial lead of the central rotating shaft (97);
when the push rod (38) is ejected, the limiting pile (1) enters the movement range of the rotating arm (63) to limit the rotation range of the rotating arm (63);
the limiting device (3), the electric push rod (69), the change-over switch and the controller are electrically connected.
6. The non-contact multi-coil voltage regulating device with the service life prolonged according to claim 2, characterized in that:
proximity switches are arranged at two ends of the limiting pile (1).
7. The non-contact multi-coil voltage regulating device with the service life prolonged according to claim 4, characterized in that:
the selector switch is a relay, a coil winding of the selector switch is electrically connected with the controller, and a normally open contact of the selector switch is connected with a coil winding of a selector relay (KL) in series;
the method for adjusting the output range of the segmented coil (4) comprises the following steps:
through key selection, setting an adjusted position by combining a liquid crystal display, or starting switching when a controller detects that the use time reaches a set value;
the controller controls the corresponding change-over switch to be closed, after the change-over switch is closed, a change-over relay (KL) corresponding to the change-over switch is electrified, and the electrified change-over relay has the function of connecting the connected segmented coil (4) with a power supply; the uncharged switching relay has the function of connecting the segmented coils (4), specifically: the connection coil (42) corresponding to the change-over switch is separated from the adjusting area, and the leading-out points of two adjacent adjusting coils (41) of the connection coil (42) corresponding to the change-over switch are power supply leading-in end points of the voltage regulator coil winding; the other adjusting coils (41) and the connecting coil (42) form a complete adjusting area,
and a coil winding of the switching relay is connected with a coil winding of the electromagnet (36) in series, and a push rod (38) of the limiting device (3) corresponding to a communication coil (42) connected with the switching relay is popped up, so that the rotating position of the carbon brush (65) is limited.
8. The non-contact multi-coil voltage regulating device with the service life prolonged according to claim 5, characterized in that:
method for adjusting the output range of a segment coil (4):
when the output range of the segmented coil (4) needs to be adjusted, the setting is carried out through a human-computer interaction interface formed by a key and a display. Or the controller starts switching according to the use time, namely switching is carried out after the use time T until all the segmented coils are used as the starting points of zero scale;
after the switching is started, the controller controls the action of a selector switch corresponding to a connection coil (42) of the selected segmented coil (4), then a corresponding switching relay (KL) acts, the limiting device (3) acts, a push rod (38) of the limiting device pops up, the limiting pile (1) is pushed out, and the rotating arm is limited;
after the switching is finished, the controller (59) controls the rotation driving device (66) to rotate, and after the proximity switch on one side of the limiting pile (1) is detected, the rotation driving device (66) is stopped and the position is recorded;
the controller (59) controls the rotary driving device (66) to rotate reversely, stops rotating when the approach switch on the other side of the limiting pile (1) is detected, and records positions which are zero scale and maximum scale.
9. The non-contact multi-coil voltage regulating device with the service life prolonged according to claim 7, is characterized in that:
the method for adjusting the output voltage of the voltage regulator during use comprises the following steps:
method one, setting formula output voltage:
the required voltage value is set through a man-machine interaction section formed by the keys and the display, and then the output voltage is started.
And after receiving the voltage required to be output, the controller calculates the position of the carbon brush according to the initial position and controls the rotation driving device (66) to rotate so that the carbon brush (65) rotates to the set position. After the carbon brush (65) is in place, the controller (59) controls the electric push rod (69) to act, and then the carbon brush (65) is contacted with the polished surface to realize the output of voltage;
detecting whether the output voltage is the set voltage or not, and if not, controlling a rotation driving device (66) to rotate to finely adjust the position of the carbon brush so that the output voltage is consistent with the set voltage;
step-by-step voltage output:
an increase key and a decrease key are set,
after the increase button is pressed down, the controller controls the rotation driving device (66) to rotate to the maximum scale, and then after the output voltage increase decrease button is pressed down, the controller controls the rotation driving device (66) to rotate to the zero scale, and then the output voltage decreases.
10. The non-contact multi-coil voltage regulating device with the service life prolonged according to claim 7, is characterized in that:
and each time the key is pressed, increasing or decreasing one voltage value to 0.1V.
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| CN201911299269.3A CN110994316B (en) | 2019-12-17 | 2019-12-17 | Automatic switching type electric carbon brush and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114400481A (en) * | 2022-01-21 | 2022-04-26 | 衢州三源汇能电子有限公司 | Voltage stabilizer with intelligent protection function |
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| CN110994316B (en) | 2020-12-25 |
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Effective date of registration: 20230105 Address after: 255086 Room 604, Floor 6, Building 2, Yihe Building, west of Jinjing Avenue and south of Zhongrun Avenue, High tech Zone, Zibo City, Shandong Province Patentee after: Zibo Tianlan Electronic Technology Co.,Ltd. Address before: 255000 No. 30 Century Road, Zhangdian District, Shandong, Zibo Patentee before: ZIBO VOCATIONAL INSTITUTE |