Self-compensation electric brush clamping device for electric push slip ring

Abstract

The invention provides a self-compensation electric brush clamping device for an electric push slip ring, and relates to the technical field of conductive slip rings, the self-compensation electric brush clamping device comprises an electric brush sliding block body, the electric brush sliding block body is provided with a clamping assembly, and the clamping assembly is used for enhancing the fitting degree between the electric brush sliding block body and a ring piece. The mounting frame is hinged to the fixing plate through a pin shaft, the mounting frame is connected with the electric brush sliding block body through the connecting piece, the transverse rods are fixedly connected to the mounting frame, the elastic piece is installed between the two transverse rods, and when abrasion occurs in the conveying process, the elastic piece is connected with the mounting frame through the pin shaft. The elastic piece enables the two installation frames to be drawn close to the center of the ring piece through the elastic potential energy of the elastic piece, the electric brush sliding block body is made to be attached to the surface of the ring piece all the time, a self-compensation mechanism of the electric brush is formed, self-compensation of the electric brush sliding block body after abrasion is achieved through linkage of the fixing plate and the installation frames, and an elastic piece tensioning structure is adopted. The pressure of the electric brush sliding block body on the ring sheet is constant in the transmission rotation process.

Description

Technical Field

[0001] The invention relates to the technical field of conductive slip rings, in particular to a self-compensating brush clamping device for an electric push slip ring. Background Art

[0002] Slip ring belongs to the application category of electrical contact sliding connection. It is also called collector ring, or rotary joint, rotary electrical interface, conductive slip ring, collector ring, return ring, coil, commutator, adapter. It is a precision power transmission device that realizes the transmission of images, data signals and power between two relatively rotating mechanisms. It is particularly suitable for applications with unlimited continuous rotation and the need to transmit power or data from a fixed position to a rotating position.

[0003] Traditional power slip rings usually use a brushed V-groove ring structure, which is very easy to burn out when carrying large currents. In addition, the friction surface will wear out greatly during use due to the coupling of electricity, heat and force during rotation. After wear, the preset pressure value will change accordingly, which cannot guarantee the stability of transmission and cannot meet the use scenario of stable transmission of kiloampere-level high current power for marine electric propulsion devices. Therefore, a self-compensating brush clamping device for electric propulsion slip rings is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a self-compensating brush clamping device for an electric push slip ring. The self-compensating brush clamping device for an electric push slip ring realizes self-compensation of a brush slider body after wear through the linkage of a fixing plate and a mounting frame, thereby ensuring the reliability of high-power rotation transmission, and adopts an elastic member tensioning structure to achieve constant pressure of the brush slider body on the ring sheet during the transmission rotation process.

[0005] The present invention provides a self-compensating brush clamping device for an electric push slip ring, comprising a brush slider body, a clamping assembly mounted on the brush slider body, and the clamping assembly is used to enhance the fit between the brush slider body and the ring sheet: The clamping assembly includes a fixing plate, a mounting frame, a connecting piece, a cross bar and an elastic piece; The mounting frame is hingedly connected to the fixing plate via a pin shaft, the mounting frame is connected to the brush slider body via the connecting piece, the cross bar is fixedly connected to the mounting frame, the elastic member is installed between the two cross bars, and the mounting frame is pulled toward the center by the elastic potential energy of the elastic member itself, so that the brush slider body is always in close contact with the surface of the ring sheet.

[0006] Preferably, the connecting member comprises an arc-shaped plate, a bolt, a connecting rod, a disc and a bayonet; The arc plate is connected to the mounting frame via the bolts, the connecting rod is inserted into a circular through groove formed by the arc plate and the mounting frame, the disc is arranged between the brush slider body and the connecting rod, the disc is fixedly connected to the connecting rod, and the disc is connected to the brush slider body via a bayonet pin.

[0007] Preferably, a mounting assembly is installed in the fixing plate, and the mounting assembly is used to adjust the distance between the fixing plate and the slip ring stator; The mounting assembly includes a sleeve, a slide rod, a fixing plate and a positioning pin; The sleeve is fixedly connected to the fixed plate, the sliding rod is inserted into the groove of the sleeve, the fixed plate is fixedly connected to the end of the sliding rod away from the sleeve, the fixed plate is used to connect with the slip ring rotor part, the sliding rod is connected to the sleeve through the positioning pin, and the distance between the fixed plate and the slip ring stator is changed by adjusting the position of the sliding rod in the sleeve.

[0008] Preferably, threaded holes for connecting with the positioning pins are evenly distributed on the sliding rod.

[0009] Preferably, a groove matched with the bayonet pin is processed on the brush slider body, and the groove is distributed in a ring shape along the brush slider body.

[0010] Preferably, a semicircular groove matching the arc-shaped plate is processed on the mounting frame.

[0011] The present invention provides a self-compensating brush clamping device for an electric push slip ring through improvement, which has the following improvements and advantages compared with the prior art: Through the coordinated use of a fixing plate, a mounting frame, a connecting piece, a cross bar, an elastic piece, etc., the two ends of the elastic piece are installed on two cross bars. When wear occurs during the transmission process, the elastic piece uses its own elastic potential energy to pull the two mounting frames toward the center of the ring piece, so that the brush slider body is always in close contact with the surface of the ring piece, forming a self-compensation mechanism of the brush. Through the linkage of the fixing plate and the mounting frame, self-compensation of the brush slider body after wear is achieved, thereby improving the reliability of high-power rotation transmission. The elastic piece tensioning structure is adopted to achieve constant pressure of the brush slider body on the ring piece during the transmission rotation, thereby improving the stability of the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the fixing plate, the mounting frame and the elastic member of the present invention.

[0014] Figure 3It is an exploded view of the arc plate, mounting bracket, bolts and connecting rods of the present invention.

[0015] Figure 4 It is a schematic diagram of the structure of the sleeve, the slide rod and the fixed disk of the present invention.

[0016] Figure 5 It is a schematic structural diagram of the brush slider body of the present invention.

[0017] Description of reference numerals: 1-brush slider body, 2-clamping assembly, 21-fixed plate, 22-mounting frame, 23-connecting piece, 231-arc plate, 232-bolt, 233-connecting rod, 234-disc, 235-pin, 24-cross bar, 25-elastic piece, 3-mounting assembly, 31-sleeve, 32-slide rod, 33-fixed disk, 34-locating pin. DETAILED DESCRIPTION

[0018] In this embodiment, if Figure 1 and Figure 2 As shown, a self-compensating brush clamping device for an electric push slip ring includes a brush slider body 1, a clamping assembly 2 is installed on the brush slider body 1, the clamping assembly 2 is used to enhance the fit between the brush slider body 1 and the ring sheet, the clamping assembly 2 includes a fixing plate 21, a mounting frame 22, a connecting piece 23, a cross bar 24 and an elastic member 25, the mounting frame 22 is hingedly connected to the fixing plate 21 through a pin shaft, the mounting frame 22 is connected to the brush slider body 1 through the connecting piece 23, the cross bar 24 is fixedly connected to the mounting frame 22, and the elastic member 25 is installed between the two cross bars 24, and the mounting frame 22 is pulled toward the center by the elastic potential energy of the elastic member 25 itself, so that the brush slider body 1 is always in close contact with the surface of the ring sheet.

[0019] Furthermore, the brush slider body 1 is processed with an arc surface for fitting with the outer periphery of the ring piece, and two mounting frames 22 are hinged on the fixed plate 21. The mounting frames 22 cooperate with the connecting pieces 23 to install the brush slider body 1. The two brush slider bodies 1 need to fit tightly on the ring piece when in use. A cross bar 24 is fixed in each mounting frame 22. The cross bar 24 is used to install an elastic member 25. The elastic member 25 is a tension spring. The elastic member 25 is connected to the cross bar 24 through its own hook. The brush slider body 1 is always in close contact with the surface of the ring piece through the elastic member 25, forming a self-compensation mechanism.

[0020] In some embodiments, Figure 1 and Figure 3As shown, the connecting member 23 includes an arc plate 231, a bolt 232, a connecting rod 233, a disc 234 and a pin 235. The arc plate 231 is connected to the mounting frame 22 by the bolt 232. The connecting rod 233 is inserted into a circular through groove formed by the arc plate 231 and the mounting frame 22. The disc 234 is arranged between the brush slider body 1 and the connecting rod 233. The disc 234 and the connecting rod 233 are fixedly connected. The disc 234 is connected to the brush slider body 1 by the pin 235.

[0021] Furthermore, each mounting frame 22 is provided with two connecting members 23, a semicircular groove is processed in the arc plate 231, the bolt 232 passes through the through hole in the mounting frame 22 and is connected to the arc plate 231, the connecting rod 233 is used to drive the disc 234 to rotate, and the pin 235 is inserted into the corresponding groove on the side wall of the brush slider body 1 to realize the connection between the disc 234 and the brush slider body 1. By using the connecting member 23, the brush slider body 1 is easy to replace.

[0022] In some embodiments, Figure 2 As shown, a mounting assembly 3 is installed in the fixed plate 21, and the mounting assembly 3 is used to adjust the distance between the fixed plate 21 and the slip ring stator. The mounting assembly 3 includes a sleeve 31, a slide bar 32, a fixed disk 33 and a positioning pin 34. The sleeve 31 is fixedly connected to the fixed plate 21, the slide bar 32 is inserted in the groove of the sleeve 31, and the fixed disk 33 is fixedly connected to the end of the slide bar 32 away from the sleeve 31. The fixed disk 33 is used to be connected to the slip ring rotor part, and the slide bar 32 is connected to the sleeve 31 through the positioning pin 34. By adjusting the position of the slide bar 32 in the sleeve 31, the distance between the fixed plate 21 and the slip ring stator can be changed.

[0023] Furthermore, the fixed plate 33 is fixed on the slip ring rotor part, thereby fixing the use position of the entire mechanism. A cavity is processed in the sleeve 31, and the slide rod 32 moves in the cavity in the sleeve 31. The outer wall of the positioning pin 34 is processed with threads, and the positioning pin 34 is used to fix the position of the slide rod 32 in the sleeve 31.

[0024] In some embodiments, Figure 4 As shown, threaded holes for connecting with the positioning pins 34 are evenly distributed on the slide bar 32 .

[0025] Furthermore, when the positioning pin 34 is connected to the corresponding threaded hole on the slide rod 32 , the position of the slide rod 32 in the sleeve 31 is fixed.

[0026] In some embodiments, Figure 5 As shown, a groove matched with the bayonet pin 235 is processed on the brush slider body 1 , and the groove is distributed in a ring shape along the brush slider body 1 .

[0027] Furthermore, the bayonet pin 235 is inserted into the bayonet groove of the brush slider body 1 , thereby connecting the brush slider body 1 and the disc 234 .

[0028] In some embodiments, Figure 3 As shown, a semicircular groove matching the arc plate 231 is processed on the mounting frame 22 .

[0029] Furthermore, the top ends of the two mounting frames 22 are processed with semicircular grooves, and the semicircular grooves and the arc-shaped plate 231 are adapted to form a circular cavity structure for mounting the connecting rod 233 .

[0030] Working principle: First, the disc 234 is installed on both sides of the brush slider body 1 through the bayonet 235, and then the connecting rod 233 is placed in the semicircular groove of the mounting frame 22. Then, the arc plate 231 and the mounting frame 22 are connected by bolts 232, and then the connecting rod 233 is placed in the circular groove formed by the arc plate 231 and the mounting frame 22, and the connecting rod 233 can rotate in the circular groove formed by the arc plate 231 and the mounting frame 22. After the brush slider body 1 and the mounting frame 22 are installed, the fixing plate 3 is used to fix the brush slider body 1 and the mounting frame 22. 3 is connected to the stator part of the slip ring, the slide bar 32 is moved in the sleeve 31, and the slide bar 32 and the sleeve 31 are connected by the positioning pin 34, thereby changing the distance between the fixed plate 21 and the slip ring stator. During operation, the elastic member 25 is in a stretched state, pressing the brush slider body 1 against the surface of the ring sheet. When wear occurs during the transmission process, the elastic member 25 pulls the two mounting frames 22 toward the center through its own elastic potential energy, so that the brush slider body 1 is always in close contact with the surface of the ring sheet, forming a self-compensation mechanism of the brush.

Claims

1. A self-compensating brush clamping device for an electric push slip ring, comprising a brush slider body (1), characterized in that: A clamping assembly (2) is mounted on the brush slider body (1), and the clamping assembly (2) is used to enhance the degree of fit between the brush slider body (1) and the ring sheet: The clamping assembly (2) comprises a fixing plate (21), a mounting frame (22), a connecting member (23), a crossbar (24) and an elastic member (25); The mounting frame (22) is hingedly connected to the fixing plate (21) via a pin shaft, the mounting frame (22) is connected to the brush slider body (1) via the connecting member (23), the cross bar (24) is fixedly connected to the mounting frame (22), the elastic member (25) is installed between the two cross bars (24), and the mounting frame 22 is pulled toward the center by the elastic potential energy of the elastic member (25), so that the brush slider body (1) is always in close contact with the surface of the ring sheet.

2. The self-compensating brush clamping device for an electric push slip ring according to claim 1 is characterized in that: The connecting member (23) comprises an arc-shaped plate (231), a bolt (232), a connecting rod (233), a disc (234) and a bayonet (235); The arc plate (231) is connected to the mounting frame (22) via the bolt (232); the connecting rod (233) is inserted into a circular through groove formed by the arc plate (231) and the mounting frame (22); the disc (234) is arranged between the brush slider body (1) and the connecting rod (233); the disc (234) and the connecting rod (233) are fixedly connected; and the disc (234) is connected to the brush slider body (1) via a bayonet (235).

3. The self-compensating brush clamping device for an electric push slip ring according to claim 1 is characterized in that: A mounting assembly (3) is installed in the fixing plate (21), and the mounting assembly (3) is used to adjust the distance between the fixing plate (21) and the slip ring stator; The mounting assembly (3) comprises a sleeve (31), a slide rod (32), a fixing plate (33) and a positioning pin (34); The sleeve (31) and the fixed plate (21) are fixedly connected, the sliding rod (32) is inserted into the groove of the sleeve (31), the fixed plate (33) is fixedly connected to one end of the sliding rod (32) away from the sleeve (31), the fixed plate (33) is used to connect with the slip ring rotor part, the sliding rod (32) is connected to the sleeve (31) through the positioning pin (34), and the distance between the fixed plate (21) and the slip ring stator is changed by adjusting the position of the sliding rod (32) in the sleeve (31).

4. The self-compensating brush clamping device for an electric push slip ring according to claim 3 is characterized in that: The sliding rod (32) is evenly distributed with threaded holes for connecting with the positioning pin (34).

5. The self-compensating brush clamping device for an electric push slip ring according to claim 2, characterized in that: The brush slider body (1) is provided with a slot that matches the latch pin (235), and the slots are distributed in a ring shape along the brush slider body (1).

6. The self-compensating brush clamping device for an electric push slip ring according to claim 2, characterized in that: The mounting frame (22) is machined with a semicircular groove that matches the arc-shaped plate (231).

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