CN111682383B - Conductive slip ring - Google Patents

Conductive slip ring Download PDF

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Publication number
CN111682383B
CN111682383B CN202010549380.XA CN202010549380A CN111682383B CN 111682383 B CN111682383 B CN 111682383B CN 202010549380 A CN202010549380 A CN 202010549380A CN 111682383 B CN111682383 B CN 111682383B
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China
Prior art keywords
rotor
moving
conductive ring
conductive
brush
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CN111682383A (en
Inventor
帅树新
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Zhejiang Dahua Technology Co Ltd
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Zhejiang Dahua Technology Co Ltd
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Priority to CN202010549380.XA priority Critical patent/CN111682383B/en
Publication of CN111682383A publication Critical patent/CN111682383A/en
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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
    • H01R39/08—Slip-rings
    • 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
    • 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
    • H01R39/44—Devices for shifting brushes
    • 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
    • H01R39/58—Means structurally associated with the current collector for indicating condition thereof, e.g. for indicating brush wear

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  • Motor Or Generator Current Collectors (AREA)

Abstract

The invention relates to the technical field of electric connection parts and discloses a conductive slip ring, which comprises a stator with an accommodating cavity, a rotor arranged in the accommodating cavity of the stator and capable of rotating around the axis of the rotor, a plurality of electric brushes arranged on the side wall of the accommodating cavity and an adjusting mechanism used for changing the contact surfaces of the electric brushes and corresponding conductive ring grooves, wherein a plurality of conductive ring grooves are formed on the peripheral surface of the rotor, and the conductive ring grooves are arranged at intervals and are mutually insulated; each brush extends into the corresponding conductive ring groove and is electrically connected with the corresponding conductive ring groove. The conductive slip ring improves the problem that the conductive slip ring is easy to distort and even fail in signal transmission due to the abrasion of the brush wires and the ring grooves along with the increase of the service time.

Description

Conductive slip ring
Technical Field
The invention relates to the technical field of electric connection components, in particular to a conductive slip ring.
Background
The conductive slip ring is mainly used for transmitting power and signals in two relative rotating mechanisms, and generally comprises a stator and a rotor and the like, wherein the rotor is rotatably arranged in the stator, annular grooves are formed in the rotor, brush wires are arranged on the stator, and the brush wires are always electrically connected with the corresponding annular grooves in the process that the rotor rotates relative to the stator, so that the transmission of the power and the signals in the two relative rotating mechanisms is realized.
However, as the conductive slip ring is used for a longer time, the parts of the brush wires and the ring grooves, which are located at the contact position, are increasingly worn, and signal transmission is easily distorted or even fails.
Disclosure of Invention
The invention provides a conductive slip ring, which is used for improving the problem that the conductive slip ring is easy to distort and even fail in signal transmission due to abrasion of brush wires and a ring groove along with the increase of service time.
In order to achieve the purpose, the invention provides the following technical scheme:
an electrically conductive slip ring, comprising:
a stator having a receiving cavity;
the rotor is arranged in the accommodating cavity of the stator and can rotate around the axis of the rotor; a plurality of conductive ring grooves are formed on the circumferential surface of the rotor, and the conductive ring grooves are arranged at intervals and are insulated from each other;
the electric brushes are arranged on the side wall of the accommodating cavity, extend into the corresponding conductive ring grooves and are electrically connected with the corresponding conductive ring grooves;
and the adjusting mechanism is used for changing the contact surface of each electric brush and the corresponding conductive ring groove.
The conductive slip ring provided by the invention can change the contact surface of each electric brush and the corresponding conductive ring groove through the adjusting mechanism, namely, after the conductive slip ring is used for a certain time, the contact surface of the electric brush and the conductive ring groove is changed, the worn parts on the electric brush and the conductive ring groove are no longer used as the contact surfaces, and the unworn parts on the electric brush and the conductive ring groove are used as new contact surfaces, so that the possibility of signal transmission distortion and failure of the conductive slip ring due to the abrasion of the brush wires and the conductive ring groove can be reduced, and the service life of the conductive slip ring is prolonged.
Optionally, with the axial direction of the rotor as a first direction, the size of each conductive ring groove in the first direction is larger than that of the corresponding brush in the first direction;
the adjusting mechanism comprises a first driving unit, wherein a power output end of the first driving unit is connected with the rotor, and the rotor can be driven to move along the first direction so as to change the contact surface between each electric brush and the corresponding conductive ring groove.
Optionally, the stator includes a fixed portion and a moving portion slidably connected to the fixed portion, the fixed portion and the moving portion together enclose the accommodating cavity, the rotor is rotatably connected to the fixed portion, and each of the brushes is disposed on the moving portion; or the stator comprises a moving part and a fixed part, the moving part surrounds the accommodating cavity, the fixed part is positioned on one side, away from the accommodating cavity, of the moving part, the moving part is connected with the fixed part in a sliding mode, the rotor is connected with the fixed part in a rotating mode, and the electric brushes are arranged on the moving part;
the adjusting mechanism comprises a second driving unit, wherein the power output end of the second driving unit is connected with the moving part and can drive the moving part to move relatively to the fixed part so as to change the contact surface between each electric brush and the corresponding conductive ring groove.
Optionally, with an axial direction of the rotor as a first direction, a size of each of the conductive ring grooves in the first direction is greater than a size of the corresponding brush in the first direction, the moving portion is slidably connected to the fixing portion in the first direction, and the second driving unit can drive the moving portion to move along the first direction.
Optionally, a first guide convex rib is arranged at a position, used for being connected with the moving part, on the fixed part, and a first guide groove corresponding to the first guide convex rib is arranged at a position, used for being connected with the fixed part, on the moving part;
or a first guide groove is formed in the part, used for being connected with the moving part, of the fixing part, and a first guide convex rib corresponding to the first guide groove is formed in the part, used for being connected with the fixing part, of the moving part;
the first guide rib and the first guide groove extend along the first direction.
Optionally, a direction perpendicular to an axis of the rotor is a second direction, the stator includes a fixed portion and a moving portion slidably connected to the fixed portion in the second direction, the fixed portion and the moving portion together enclose the accommodating cavity, the rotor is rotatably connected to the fixed portion, and each of the brushes is disposed on the moving portion;
the adjusting mechanism comprises a third driving unit, and a power output end of the third driving unit is connected with the moving part and can drive the moving part to move along the second direction.
Optionally, a second guiding convex rib is arranged at a position, used for being connected with the moving part, on the fixed part, and a second guiding groove corresponding to the second guiding convex rib is arranged at a position, used for being connected with the fixed part, on the moving part;
or a second guide groove is formed in the part, used for being connected with the moving part, of the fixing part, and a second guide convex rib corresponding to the second guide groove is formed in the part, used for being connected with the fixing part, of the moving part;
the second guide convex rib and the second guide groove extend along the second direction.
Optionally, with an axial direction of the rotor as a first direction, a cross section of each of the conductive ring grooves parallel to the first direction and a cross section of each of the brushes parallel to the first direction are both square, and at least one surface of each of the brushes is electrically connected to an inner wall of the corresponding conductive ring groove.
Optionally, each of the brushes has two adjacent faces electrically connected to the corresponding inner wall of the corresponding conductive ring groove.
Optionally, the conductive slip ring comprises a control unit and a number of turns counter, and the adjusting mechanism and the number of turns counter are both electrically connected with the control unit, wherein the number of turns counter is used for recording the number of turns of the rotor;
and when the number of turns of the rotor, recorded by the number-of-turns counter, reaches a preset value, sending a signal to the control unit so that the control unit controls the adjusting mechanism to act.
Drawings
Fig. 1 is a schematic structural diagram of a conductive slip ring according to an embodiment of the present invention in a first state;
FIG. 2 is a cross-sectional view taken along line D-D of FIG. 1;
FIG. 3 is an enlarged view of FIG. 1 at A;
FIG. 4 is a schematic structural diagram of a conductive slip ring according to an embodiment of the present invention in a second state;
FIG. 5 is a schematic structural diagram of another conductive slip ring provided in accordance with an embodiment of the present invention;
FIG. 6 is a cross-sectional view B-B of the conductive slip ring shown in FIG. 5;
fig. 7 is an enlarged view of fig. 5 at C.
Icon: 1-a stator; 11-an electric brush; 111-a first side; 112-a second side; 113-a third side; 114-a fourth side; 12-a fixed part; 121-second guiding ribs; 13-a moving part; 131-a second guide groove; 100-a containment chamber; 2-a rotor; 21-a conductive ring groove; 211-a first slot wall; 212-bottom wall; 213-a second slot wall; 3-an adjusting mechanism; 4-cycle number counter; 5-a bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the conductive slip ring provided in this embodiment includes a stator 1 having a receiving cavity 100, a rotor 2 disposed in the receiving cavity 100 of the stator 1 and capable of rotating around its axis, and a plurality of brushes 11 disposed on a sidewall of the receiving cavity 100, wherein a plurality of conductive ring grooves 21 are formed on a circumferential surface of the rotor 2, and the conductive ring grooves 21 are disposed at intervals and insulated from each other; each brush 11 extends into a corresponding conductive ring groove 21 and is electrically connected with the corresponding conductive ring groove 21; the conductive slip ring further includes an adjustment mechanism 3 for changing a contact surface of each brush 11 with the corresponding conductive ring groove 21.
With the increase of the service time of the conductive slip ring, the parts of the brushes 11 and the conductive ring grooves 21 at the contact positions of the brushes 11 and the conductive ring grooves 21 are worn, which easily causes distortion and even failure of signal transmission, but the conductive slip ring provided by this embodiment can change the contact surfaces of the brushes 11 and the corresponding conductive ring grooves 21 through the adjusting mechanism 3, that is, after the conductive slip ring is used for a certain time, the contact surfaces of the brushes 11 and the conductive ring grooves 21 are changed, so that the worn parts of the brushes 11 and the conductive ring grooves 21 are no longer used as the contact surfaces, the unworn parts of the brushes 11 and the conductive ring grooves 21 are used as new contact surfaces, which is equivalent to that at least two groups of the brushes 11 and the conductive ring grooves 21 (the contact surfaces of the brushes 11 and the corresponding conductive ring grooves 21 are changed twice or more through the adjusting mechanism 3, and the brushes 11 and the conductive ring grooves 21 can have three or more groups of contact surfaces), therefore, the possibility of signal transmission distortion and failure of the conductive slip ring due to the abrasion of the electric brush 11 and the conductive ring groove 21 can be reduced, and the service life of the conductive slip ring is prolonged.
Specifically, when the brush 11 is provided, the brush 11 may be formed by folding a copper wire, for example, the brush 11 has a U-shaped (as shown in fig. 2) or V-shaped structure formed by folding a copper wire, and both sides of the brush 11 having the U-shaped or V-shaped structure are electrically connected to the corresponding conductive ring grooves 21. Further, the brushes 11 with the U-shaped or V-shaped structures can correspond to the conductive ring grooves 21 on the rotor 2 one by one, and the brushes 11 can be insulated from each other; in order to enhance the reliability of signal transmission of the conductive slip ring, N continuous brushes 11 may be in a group, and the brushes 11 in the same group are electrically connected, where N is an integer greater than 1.
Specifically, when the stator 1 is provided, the outer shape of the stator 1 may be a column shape, for example: cylindrical, rectangular, or square, etc.
When the rotor 2 is specifically arranged, the bearings 5 are respectively sleeved at the two ends of the rotor 2, and the rotor 2 is installed in the accommodating cavity 100 of the stator 1 through the bearings 5.
In a specific technical solution, the direction of the axis EF of the rotor 2 is taken as the first direction, the cross section of each conductive ring groove 21 parallel to the first direction and the cross section of each brush 11 parallel to the first direction are both square, and at least one surface of each brush 11 is electrically connected to the inner wall of the corresponding conductive ring groove 21, for example, each brush 11 has one surface or two adjacent surfaces electrically connected to the corresponding inner wall of the corresponding conductive ring groove 21.
Still use the axial direction of rotor 2 as the first direction, in an optional technical scheme, the size of each conducting ring groove 21 in the first direction is greater than the size of corresponding brush 11 in the first direction, adjustment mechanism 3 includes a first drive unit, and the power take off end of the first drive unit is connected with rotor 2, can drive rotor 2 along the first direction removal to change the contact surface of each brush 11 and corresponding conducting ring groove 21.
The first driving unit drives the rotor 2 to move along the first direction, so that the contact surface between each electric brush 11 and the corresponding conductive ring groove 21 is changed, the change of the contact surface between each electric brush 11 and the corresponding conductive ring groove 21 can be realized by using fewer parts, the assembly of the conductive slip ring is simpler, and the cost is saved.
In a specific embodiment, as shown in fig. 3 (the gap between the first groove wall 211 and the first side surface 111 is shown for convenience of illustration, and the first groove wall 211 and the first side surface 111 are actually in contact without a gap therebetween), the conductive groove 21 includes a first groove wall 211, a bottom wall 212, and a second groove wall 213 connected in sequence; the brush 11 includes a first side 111, a second side 112, a third side 113, and a fourth side 114 connected in sequence, a first groove wall 211 of the conductive ring groove 21 faces the first side 111 of the brush 11, a bottom wall 212 of the conductive ring groove 21 faces the second side 112 of the brush 11, and a second groove wall 213 of the conductive ring groove 21 faces the third side 113 of the brush 11. In this case, before the contact surface between the brush 11 and the corresponding ring groove 21 is changed (i.e. when the slip ring is in the initial state), the first groove wall 211 of the ring groove 21 may be electrically connected to the first side surface 111 of the brush 11, and after the contact surface between the brush 11 and the corresponding ring groove 21 is changed, the second groove wall 213 of the ring groove 21 may be electrically connected to the third side surface 113 of the brush 11; before the contact surface between the brush 11 and the corresponding conductive ring groove 21 is changed, the second groove wall 213 of the conductive ring groove 21 may be electrically connected to the third side surface 113 of the brush 11, and after the contact surface between the brush 11 and the corresponding conductive ring groove 21 is changed, the first groove wall 211 of the conductive ring groove 21 may be electrically connected to the first side surface 111 of the brush 11.
As shown in fig. 1, before the contact surface between the brush 11 and the corresponding conductive ring groove 21 is changed, the first groove wall 211 of the conductive ring groove 21 is electrically connected to the first side surface 111 of the brush 11, and simultaneously, the bottom wall 212 of the conductive ring groove 21 is electrically connected to the second side surface 112 of the brush 11, and after the contact surface between the brush 11 and the corresponding conductive ring groove 21 is changed, as shown in fig. 4, the bottom wall 212 of the conductive ring groove 21 is electrically connected to the second side surface 112 of the brush 11 (the connection position is changed), and simultaneously, the second groove wall 213 of the conductive ring groove 21 is electrically connected to the third side surface 113 of the brush 11; before the contact surface between the brush 11 and the corresponding conductive ring groove 21 is changed, the bottom wall 212 of the conductive ring groove 21 is electrically connected to the second side surface 112 of the brush 11, meanwhile, the second groove wall 213 of the conductive ring groove 21 is electrically connected to the third side surface 113 of the brush 11, and after the contact surface between the brush 11 and the corresponding conductive ring groove 21 is changed, the first groove wall 211 of the conductive ring groove 21 is electrically connected to the first side surface 111 of the brush 11, and meanwhile, the bottom wall 212 of the conductive ring groove 21 is electrically connected to the second side surface 112 of the brush 11.
When the two methods are adopted, in the process of changing the contact surface between the electric brush 11 and the corresponding conductive ring groove 21, the bottom wall 212 of the conductive ring groove 21 is electrically connected with the second side surface 112 of the electric brush 11, and continuous signal transmission can be realized.
In another specific technical solution, the stator 1 includes a fixed portion 12 and a moving portion 13 slidably connected to the fixed portion 12, the fixed portion 12 and the moving portion 13 together enclose an accommodating cavity 100, the rotor 2 is rotatably connected to the fixed portion 12, and each brush 11 is disposed on the moving portion 13; or, the stator 1 includes a moving portion 13 surrounding the accommodating cavity 100 and a fixing portion 12 located on a side of the moving portion 13 away from the accommodating cavity 100, the moving portion 13 is slidably connected to the fixing portion 12, the rotor 2 is rotatably connected to the fixing portion 12, and each brush 11 is disposed on the moving portion 13.
The adjusting mechanism 3 includes a second driving unit, a power output end of the second driving unit is connected with the moving portion 13, and the second driving unit can drive the moving portion 13 to relatively and fixedly move, so as to change a contact surface between each electric brush 11 and the corresponding conductive ring groove 21.
Further, still taking the axial direction of the rotor 2 as the first direction, the size of each conductive ring groove 21 in the first direction is larger than that of the corresponding brush 11 in the first direction, the moving portion 13 is connected with the fixed portion 12 in a sliding manner in the first direction, and the second driving unit can drive the moving portion 13 to move along the first direction.
Furthermore, a first guiding convex rib is arranged at the part of the fixed part 12 for connecting with the movable part 13, and a first guiding groove corresponding to the first guiding convex rib is arranged at the part of the movable part 13 for connecting with the fixed part 12;
or, a first guide groove is arranged at the part of the fixed part 12 for connecting with the movable part 13, and a first guide convex rib corresponding to the first guide groove is arranged at the part of the movable part 13 for connecting with the fixed part 12;
the first guide convex rib and the first guide groove extend along the first direction.
The movement of the moving portion 13 is guided by the first guide rib and the first guide groove, so that the position accuracy of the moving portion 13 is higher.
In another technical solution, as shown in fig. 5 and 6, the direction perpendicular to the axis of the rotor 2 is taken as a second direction, the stator 1 includes a fixed portion 12 and a moving portion 13 slidably connected to the fixed portion 12 in the second direction, the fixed portion 12 and the moving portion 13 together enclose a containing cavity 100, the rotor 2 is rotatably connected to the fixed portion 12, and each brush 11 is disposed on the moving portion 13.
The adjusting mechanism 3 includes a third driving unit, a power output end of the third driving unit is connected to the moving portion 13, and the moving portion 13 can be driven to move along the second direction, so that a portion of the brush 11, which is originally in contact with the conductive ring groove 21, is staggered from the conductive ring groove 21, and a portion of the brush 11, which is originally not in contact with the conductive ring groove 21, becomes a new contact portion.
Taking the brush 11 as a U-shape with a square cross-section as an example, as shown in fig. 6, the brush 11 includes two parallel sides, one of the sides includes three points c, a, b arranged in a direction away from the moving part 13, the other side includes a point c' opposite to the point c, the point a ' opposite to the point a and the point b ' opposite to the point b assume that the straight line of the point a and the straight line of the point a ' are originally in contact with the conductive ring groove 21 (since the cross section of the brush 11 is square, the portion of the brush 11 in contact with the conductive ring groove 21 is a straight line), the moving part 13 may be moved in the second direction by moving the moving part 13 in a direction to approach the conductive ring groove 21, or by moving the moving part 13 in a direction to separate from the conductive ring groove 21, in the former case, after the moving part 13 moves along the second direction, the part of the electric brush 11, which is in contact with the conductive ring groove 21, is changed from the straight line of the point a and the straight line of the point a 'to the straight line of the point c and the straight line of the point c'; in the latter case, when the moving portion 13 moves in the second direction, the portion of the brush 11 in contact with the conductive ring groove 21 is changed from the straight line at the point a and the straight line at the point a 'to the straight line at the point b and the straight line at the point b'.
Further, as shown in fig. 6 and 7, a second guide rib 121 is disposed at a portion of the fixed portion 12 for connecting with the movable portion 13, and a second guide groove 131 corresponding to the second guide rib 121 is disposed at a portion of the movable portion 13 for connecting with the fixed portion 12;
or, a second guiding groove 131 is arranged at a position on the fixed part 12 for connecting with the moving part 13, and a second guiding convex rib 121 corresponding to the second guiding groove 131 is arranged at a position on the moving part 13 for connecting with the fixed part 12;
the second guide rib 121 and the second guide groove 131 extend in the second direction.
The movement of the moving part 13 is guided by the second guide rib 121 and the second guide groove 131, so that the moving part 13 is more highly accurate in position.
In one implementation, the conductive slip ring includes a control unit and a number of turns counter 4, the adjusting mechanism 3 and the number of turns counter 4 are both electrically connected to the control unit, wherein the number of turns counter 4 is used to record the number of turns that the rotor 2 has rotated.
When the number of turns of the rotor 2 recorded by the turn number counter 4 reaches a preset value, a signal is sent to the control unit, so that the control unit controls the adjusting mechanism 3 to act, and the contact surface of each electric brush 11 and the corresponding conductive ring groove 21 is changed.
Through the action of the adjustment mechanism 3 triggered by the matching of the number-of-turns counter 4 and the control unit, the change of the contact surface of each electric brush 11 and the corresponding conductive ring groove 21 is realized, so that the degree of automation of the conductive slip ring provided by the embodiment is higher, and more manpower is saved.
When the control unit is specifically arranged, the control unit can be a single chip microcomputer.
The first driving unit, the second driving unit and the third driving unit mentioned in this embodiment may be a structure in which an air cylinder, an electric cylinder or a motor is engaged with a lead screw, and the like.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. An electrically conductive slip ring, comprising:
a stator having a receiving cavity;
the rotor is arranged in the accommodating cavity of the stator and can rotate around the axis of the rotor; a plurality of conductive ring grooves are formed on the circumferential surface of the rotor, and the conductive ring grooves are arranged at intervals and are insulated from each other;
the electric brushes are arranged on the side wall of the accommodating cavity, extend into the corresponding conductive ring grooves and are electrically connected with the corresponding conductive ring grooves;
the adjusting mechanism is used for changing the contact surface of each electric brush and the corresponding conductive ring groove;
the axial direction of the rotor is taken as a first direction, the section of each conductive ring groove parallel to the first direction and the section of each electric brush parallel to the first direction are both square, and each electric brush has two adjacent surfaces which are electrically connected with the corresponding inner wall of the corresponding conductive ring groove.
2. The conductive slip ring of claim 1, wherein the dimension of each of the conductive ring grooves in the first direction is larger than the dimension of the corresponding brush in the first direction, with the axial direction of the rotor being the first direction;
the adjusting mechanism comprises a first driving unit, wherein a power output end of the first driving unit is connected with the rotor, and the rotor can be driven to move along the first direction so as to change the contact surface between each electric brush and the corresponding conductive ring groove.
3. The conductive slip ring of claim 1, wherein the stator comprises a fixed portion and a moving portion slidably connected to the fixed portion, the fixed portion and the moving portion together define the receiving cavity, the rotor is rotatably connected to the fixed portion, and each of the brushes is disposed on the moving portion; or the stator comprises a moving part and a fixed part, the moving part surrounds the accommodating cavity, the fixed part is positioned on one side, away from the accommodating cavity, of the moving part, the moving part is connected with the fixed part in a sliding mode, the rotor is connected with the fixed part in a rotating mode, and the electric brushes are arranged on the moving part;
the adjusting mechanism comprises a second driving unit, wherein the power output end of the second driving unit is connected with the moving part, and can drive the moving part to move relative to the fixing part so as to change the contact surface between each electric brush and the corresponding conductive ring groove.
4. The conductive slip ring of claim 3, wherein the axial direction of the rotor is a first direction, the dimension of each of the conductive ring grooves in the first direction is larger than the dimension of the corresponding brush in the first direction, the moving portion is slidably connected to the fixed portion in the first direction, and the second driving unit can drive the moving portion to move in the first direction.
5. The slip ring according to claim 4, wherein the fixed portion is provided with a first guiding rib at a portion for connecting with the moving portion, and the moving portion is provided with a first guiding groove corresponding to the first guiding rib at a portion for connecting with the fixed portion;
or a first guide groove is formed in the part, used for being connected with the moving part, of the fixing part, and a first guide convex rib corresponding to the first guide groove is formed in the part, used for being connected with the fixing part, of the moving part;
the first guide rib and the first guide groove extend along the first direction.
6. The conductive slip ring of claim 1, wherein the stator comprises a fixed portion and a moving portion slidably connected to the fixed portion in the second direction, the fixed portion and the moving portion together enclose the accommodating cavity, the rotor is rotatably connected to the fixed portion, and each of the brushes is disposed on the moving portion;
the adjusting mechanism comprises a third driving unit, and a power output end of the third driving unit is connected with the moving part and can drive the moving part to move along the second direction.
7. The slip ring according to claim 6, wherein the fixed portion is provided with a second guiding rib at a portion for connecting with the moving portion, and the moving portion is provided with a second guiding groove corresponding to the second guiding rib at a portion for connecting with the fixed portion;
or a second guide groove is formed in the part, used for being connected with the moving part, of the fixing part, and a second guide convex rib corresponding to the second guide groove is formed in the part, used for being connected with the fixing part, of the moving part;
the second guide convex rib and the second guide groove extend along the second direction.
8. The conductive slip ring of any one of claims 1-7, comprising a control unit and a number of turns counter, both the adjustment mechanism and the number of turns counter being electrically connected to the control unit, wherein the number of turns counter is used to record the number of turns the rotor has made;
and when the number of turns of the rotor, recorded by the number-of-turns counter, reaches a preset value, sending a signal to the control unit so that the control unit controls the adjusting mechanism to act.
CN202010549380.XA 2020-06-16 2020-06-16 Conductive slip ring Active CN111682383B (en)

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CN111682383B true CN111682383B (en) 2022-02-18

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CN107069367B (en) * 2017-04-28 2018-12-21 北京航天控制仪器研究所 Conducting slip ring a kind of while that there is two kinds of contact functions of rotation and slip ring
CN207765770U (en) * 2017-12-26 2018-08-24 江西英智科技有限公司 A kind of engineering machinery slip ring
CN108242754A (en) * 2018-01-16 2018-07-03 嘉兴恩碧技电气有限公司 A kind of conducting slip ring brush holder system and its method of work automatically switched
CN210272968U (en) * 2019-08-19 2020-04-07 泓记精密股份有限公司 Brush wire and slip ring collector
CN110718821A (en) * 2019-10-22 2020-01-21 中船九江精达科技股份有限公司 Electric transmission device with high-precision angle measurement function and manufacturing method thereof

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