阅读说明：本技术 一种可自调心刷握结构 (self-aligning brush holder structure ) 是由 谭富强 王智超 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种可自调心刷握结构,包括接线座、连接座、支撑杆、支撑臂和碳刷；接线座和连接座固定连接在支撑杆两侧,接线座上设有接线柱,支撑臂共有两个,两个支撑臂的一端分别与连接座的两端铰接,两个支撑臂的另一端分别与一个碳刷铰接,两个碳刷与接线柱连接,碳刷与转子滑动连接,支撑臂的中部与连接座之间设有弹簧,弹簧将支撑臂拉向转子,使碳刷紧贴在转子的外侧面,碳刷与转子相接触的一面为弧形面,弧形面的弧度与转子外侧面弧度相同。这种可自调心刷握结构用于风力发电机组上的滑环组件,碳刷与转子接触的一面为弧面,使碳刷无需预磨即可达到较大接触面积,不采用传统的恒压簧及刷盒结构,占用空间小,可以安装在有限的空间内。(the invention discloses a self-aligning brush holder structure which comprises a wire holder, a connecting seat, a supporting rod, a supporting arm and a carbon brush, wherein the wire holder is fixedly connected with the connecting seat; connection terminal and connecting seat fixed connection are in the bracing piece both sides, be equipped with the terminal on the connection terminal, the support arm is total two, the one end of two support arms is articulated with the both ends of connecting seat respectively, the other end of two support arms is articulated with a carbon brush respectively, two carbon brushes and terminal connection, carbon brush and rotor sliding connection, be equipped with the spring between the middle part of support arm and the connecting seat, the spring draws the support arm to the rotor, make the lateral surface of hugging closely the carbon brush at the rotor, the one side that the carbon brush contacted with the rotor is the arcwall face, the radian and the rotor lateral surface radian. The self-aligning brush holder structure is used for a slip ring component on a wind generating set, one surface of a carbon brush, which is contacted with a rotor, is an arc surface, so that the carbon brush can reach a larger contact area without pre-grinding, a traditional constant pressure spring and brush box structure are not adopted, the occupied space is small, and the self-aligning brush holder structure can be installed in a limited space.)

1. a self-aligning brush holder structure is characterized by comprising a wire holder (1), a connecting seat (2), a supporting rod (3), a supporting arm (4) and a carbon brush (5);

The wiring seat (1) and the connecting seat (2) are fixedly connected with two sides of the supporting rod (3), a wiring terminal (11) is arranged on the wiring seat, the supporting arms (4) are two in total, one ends of the two supporting arms (4) are respectively hinged with two ends of the connecting seat (2), the other ends of the two supporting arms (4) are respectively hinged with one carbon brush (5), the two carbon brushes (5) are connected with the wiring terminal (11), the carbon brushes (5) are in sliding connection with the rotor (6), a spring (7) is arranged between the middle part of the supporting arms (4) and the connecting seat (2), the spring (7) pulls the supporting arms (4) towards the rotor (6) to enable the carbon brushes (5) to be tightly attached to the outer side surface of the rotor (6), and one side of the carbon brushes, which is in contact with the rotor (6), is an arc-shaped surface, the radian of the arc-shaped surface is the same as that of the outer side surface of the rotor.

2. A brush holder structure capable of self aligning according to claim 1, characterized in that the bottom surface of the wire holder (1) and the top surface of the connecting seat (2) are both provided with cambered grooves (8), two cambered grooves (8) are oppositely arranged, the support rod (3) is arranged between the two cambered grooves (8), the wire holder (1) and the connecting seat (2) are fixedly connected through a fastening bolt (12), and the cambered grooves (8) are pressed on the support rod (3) through the fastening bolt (12).

3. The brush holder structure capable of self aligning according to claim 1, wherein the number of the binding posts (11) is three, the three binding posts (11) are respectively arranged at two ends and in the middle of the top surface of the binding post base (1), the two binding posts (11) at the two ends are respectively connected with the carbon brush, and the binding post (11) in the middle is connected with the external wire.

4. The brush holder structure capable of self aligning according to claim 1, wherein the supporting arm (4) comprises two strip plates (41), one end of each strip plate (41) is hinged to one end of the connecting base (2) through a rotating shaft, the other end of each strip plate (41) is hinged to the carbon brush (5) through a rotating shaft, a fixing pin (42) is arranged in the middle of each strip plate (41), a fixing ring (21) is arranged on the bottom surface of the connecting base (2), and a spring (7) is arranged between the fixing ring (21) and the fixing pin (42).

5. A self-aligning brush holder structure according to claim 2 wherein there are two of said fastening bolts (12).

Technical Field

The invention relates to the field of conductive slip rings, in particular to a brush holder structure capable of self-aligning.

Background

The wind generating set is generally placed in a nacelle at the top of a tower, electric energy generated by a generator is transmitted to the ground through a cable, and a transmission cable enters the tower from the nacelle and is laid downwards along the gravity direction. In the process of generating electricity of the generator set, the blades need to be arranged upwind, when the wind direction changes, the blades and the rudder need to rotate along with the change of the wind direction, in the process that the generator set rotates along with the wind direction, cables can also twist and swing, friction exists between the cables and can be wound together, in order to avoid the situation, a slip ring assembly is arranged between a cabin cable and a tower cable which are connected with the generator set and output power outwards, a rotor is connected with the cabin cable, a brush assembly is connected with the tower cable, a movably connected conductive channel is formed between the cabin cable and the tower cable, and when the cabin rotates along with the change of the wind direction, the cables can be prevented from twisting.

On one hand, however, because the rotation speed of the slip ring assembly is slow, each rotation of the slip ring assembly needs about 20 minutes, the carbon brush cannot achieve the pre-grinding effect, and the contact area between the carbon brush and the rotor cannot be ensured; on the other hand, because the space for installing the carbon brush and related components in the slip ring component is limited, a constant pressure spring and a brush box mechanism cannot be installed, and therefore, the traditional brush holder structure cannot be applied to the slip ring component.

Disclosure of Invention

The invention provides a self-aligning brush holder structure which is used for a slip ring component on a wind generating set, a carbon brush can reach a large contact area without pre-grinding, a traditional constant pressure spring and brush box mechanism are not adopted, the occupied space is small, and the self-aligning brush holder structure can be installed in a limited space.

A self-aligning brush holder structure comprises a wire holder, a connecting seat, a supporting rod, a supporting arm and a carbon brush;

The wire holder with connecting seat fixed connection be in the bracing piece both sides, be equipped with the terminal on the wire holder, the support arm is total two, two the one end of support arm respectively with the both ends of connecting seat are articulated, two the other end of support arm respectively with one the carbon brush is articulated, two the carbon brush with terminal connection, carbon brush and rotor sliding connection, the middle part of support arm with be equipped with the spring between the connecting seat, the spring will the support arm draws to the rotor makes the carbon brush hugs closely the lateral surface of rotor, the carbon brush with the one side that the rotor contacted is the arcwall face, the radian of arcwall face with the rotor lateral surface radian is the same.

furthermore, the bottom surface of the wire holder with all be equipped with the cambered surface groove on the top surface of connecting seat, two the cambered surface groove sets up relatively, the bracing piece is arranged in two between the cambered surface groove, the wire holder with the connecting seat passes through fastening bolt fixed connection, and through fastening bolt will the cambered surface groove compresses tightly on the bracing piece.

Furthermore, the number of the binding posts is three, the three wire holders are respectively arranged at two ends and in the middle of the top surface of the wire holder, the two binding posts at the two ends are respectively connected with the carbon brush, and the binding post in the middle is connected with an external wire.

Further, the support arm includes two strip boards, two the one end of strip board articulates through the pivot the one end of connecting seat, two the other end of strip board through the pivot with the carbon brush is articulated, two the centre of strip board is equipped with the fixed pin, the bottom surface of connecting seat is equipped with solid fixed ring, gu fixed ring with be equipped with the spring between the fixed pin.

Further, the fastening bolts are two in total.

The invention provides a self-aligning brush holder structure which is used for a slip ring component on a wind generating set, wherein one surface of a carbon brush, which is contacted with a rotor, is provided with an arc surface, so that the carbon brush can reach a larger contact area without pre-grinding, and a traditional constant-pressure spring and brush box mechanism is not adopted, so that the self-aligning brush holder structure occupies a small space and can be installed in a limited space.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic view of a self-aligning brush holder structure disclosed in the present invention;

FIG. 2 is a front view of a self-aligning brush holder structure disclosed in the present invention;

FIG. 3 is a partial schematic view of portion A of FIG. 1;

FIG. 4 is a top view of the self-aligning brush holder structure of the present invention after assembly;

fig. 5 is an isometric view of an assembled self-aligning brush holder structure of the present disclosure.

In the figure: 1. a wire holder; 2. a connecting seat; 3. a support bar; 4. a support arm; 5. a carbon brush; 6. a rotor; 7. a spring; 8. a cambered surface groove; 11. a binding post; 12. fastening a bolt; 21. a fixing ring; 41. a strip plate; 901. a top plate; 902. a base plate; 903. a connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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, 2, 4, and 5, a self-aligning brush holder structure includes a wire holder 1, a connecting seat 2, a support rod 3, a support arm 4, and a carbon brush 5;

Connection terminal 1 and 2 fixed connection of connecting seat in 3 both sides of bracing piece, be equipped with terminal 11 on the connection terminal, support arm 4 is total two, the one end of two support arms 4 is articulated with the both ends of connecting seat 2 respectively, the other end of two support arms 4 is articulated with a carbon brush 5 respectively, two carbon brushes 5 are connected with terminal 11, carbon brush 5 and rotor 6 sliding connection, be equipped with spring 7 between the middle part of support arm 4 and the connecting seat 2, spring 7 draws support arm 4 to rotor 6, make carbon brush 5 hug closely the lateral surface at rotor 6, the one side that the carbon brush contacted with rotor 6 is the arcwall face, the radian and the rotor lateral surface radian of arcwall face are the same.

The self-aligning brush holder structure disclosed by the invention is used for a slip ring assembly, the slip ring assembly comprises a top plate 901 and a bottom plate 902, a plurality of connecting rods 903 are arranged between the top plate 901 and the bottom plate 902, the plurality of connecting rods 903 are connected with a rotor 6 in series, a supporting rod 3 is arranged on the outer side of the rotor 6, a carbon brush is fixed on the supporting rod 3 and is attached to the periphery of the rotor 6, bearings are arranged on the top plate 901 and the bottom plate 902, two ends of the plurality of connecting rods 903 are respectively connected with the bearings on the top plate 901 and the bottom plate 902, the rotor 6 can rotate between the top plate 901 and the bottom plate 902, and the rotating plane of the rotor.

Rotor 6 and cabin cable junction, carbon brush 5 is connected with terminal 11, then with tower section of thick bamboo cable junction, sliding connection between carbon brush 5 and the rotor 6 forms electrically conductive passageway, and carbon brush 5 is the arcwall face with rotor 6 contact surface to the radian of arcwall face suits with rotor 6 periphery, does not need to grind carbon brush 5 in advance, can make the contact rotor 6 of carbon brush 5 maximum area.

Spring 7 between 4 middle parts of support arm and the connecting seat 2 draws together two support arms 4 to the centre, and the carbon brush 5 of 4 tip of two support arms all contacts with 6 peripheries of rotor, and under spring 7's pulling force, the automatic angle of adjustment of carbon brush 5 makes the area of contact of carbon brush 5 and rotor 6 keep in the maximum position.

Further, all be equipped with cambered surface groove 8 on the bottom surface of wire holder 1 and the top surface of connecting seat 2, two cambered surface grooves 8 set up relatively, and between two cambered surface grooves 8, wire holder 1 and connecting seat 2 pass through fastening bolt 12 fixed connection to compress tightly cambered surface groove 8 on bracing piece 3 through fastening bolt 12 between the bracing piece 3 is arranged in to bracing piece 3. The cambered surface groove 8 increases the contact area between the wire holder 1, the connecting seat 2 and the supporting rod, and the connection is more stable. The bottom surface of the wire holder 1 and the top surface of the connecting seat 2, namely two opposite surfaces when the wire holder 1 is connected with the connecting seat 2.

Furthermore, the number of the binding posts 11 is three, the three binding posts 11 are respectively arranged at two ends and in the middle of the top surface of the wire holder 1, the two binding posts 11 at the two ends are respectively connected with the carbon brush, and the binding post 11 in the middle is connected with the external wire. The brush braid of carbon brush links to each other with the terminal that closes on the connection terminal respectively, and the terminal in the middle links to each other with the tower section of thick bamboo cable. The material of the wire holder is H62 cast copper, a good conductor of electricity.

Further, the support arm 4 includes two strip plates 41, one end of each of the two strip plates 41 is hinged to one end of the connection seat 2 through a rotation shaft, the other end of each of the two strip plates 41 is hinged to the carbon brush 5 through a rotation shaft, a fixing pin 42 is disposed between the two strip plates 41, as shown in fig. 3, a fixing ring 21 is disposed on the bottom surface of the connection seat 2, and a spring 7 is disposed between the fixing ring 21 and the fixing pin 42. The springs can be arranged between the two supporting arms and the fixing ring 21 respectively, the two supporting arms can also be connected with the two ends of one spring, and the middle part of the spring is connected to the fixing ring 21. The invention adopts a common spring instead of a constant pressure spring, and the carbon brush is tightly pressed on the periphery of the rotor through mechanisms such as the supporting arm, the fixing ring and the like.

Further, the fastening bolts are two in total. In this embodiment, a fastening bolt is respectively installed between three terminals, and the two fastening bolts respectively fixedly connect the portions of the wire holder 1 and the connecting seat 2 located at the two sides of the support rod 3, so that the wire holder 1 and the connecting seat 2 are fixed at the two sides of the support rod 3.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.