Self-compensating brush holder for electrically propelled slip ring

Abstract

The application provides a self-compensation brush clamping device for an electric push slip ring and relates to the technical field of conductive slip rings.The self-compensation brush clamping device comprises a brush sliding block body, a clamping assembly is installed on the brush sliding block body, the clamping assembly is used for enhancing the fitting degree between the brush sliding block body and a ring piece, a mounting frame is connected with a fixed plate through a pin shaft, the mounting frame is connected with the brush sliding block body through a connecting piece, a cross rod is fixedly connected to the mounting frame, and an elastic piece is installed between the two cross rods.When wear occurs during transmission, the elastic piece pulls the two mounting frames to the center of the ring piece through the elastic potential energy of the elastic piece, so that the brush sliding block body is always in close contact with the surface of the ring piece, a self-compensation mechanism of the brush is formed, the self-compensation of the brush sliding block body after wear is realized through the linkage of the fixed plate and the mounting frame, the elastic piece tensioning structure is adopted, and the pressure of the brush sliding block body on the ring piece is constant during the transmission rotation process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrically conductive slip rings, in particular to a self-compensating brush clamping device for electrically conductive slip rings. BACKGROUND

[0002] Slip rings belong to the application category of electric contact sliding connection, also known as current collector rings, or rotating joints, rotating electrical interfaces, electrically conductive slip rings, current collector rings, return current rings, coils, commutators, adapters, and are precision power transmission devices that realize image, data signal and power transmission between two relative rotating mechanisms. They are particularly suitable for applications where there is no limit to continuous rotation, and power or data needs to be transmitted from a fixed position to a rotating position.

[0003] Traditional power slip ring transmission usually adopts the structure form of brush wire V-shaped groove ring piece. This structure form is easy to burn when carrying large current, and the surface of the friction pair will be greatly worn during rotation under the coupling action of electricity, heat and force during use. After wear, the preset pressure value changes, which cannot guarantee the stability of transmission and cannot meet the use scenario of stable transmission of kiloampere-level large current power of marine electric push devices. Therefore, a self-compensating brush clamping device for electrically conductive slip rings is needed. SUMMARY

[0004] The purpose of the present application is to provide a self-compensating brush clamping device for electrically conductive slip rings. The self-compensating brush clamping device for electrically conductive slip rings realizes self-compensation of the brush sliding block body after wear through the linkage of the fixed plate and the mounting bracket, guarantees the reliability of high-power rotation transmission, and realizes constant pressure of the brush sliding block body on the ring piece during transmission rotation by adopting an elastic member tensioning structure.

[0005] The present application provides a self-compensating brush clamping device for electrically conductive slip rings, comprising two brush sliding block bodies, each of which is provided with a clamping assembly for enhancing the fitting degree between the two brush sliding block bodies and the ring piece.

[0006] The clamping assembly comprises a fixed plate, two mounting brackets, two connecting pieces, two cross bars and an elastic member.

[0007] The two mounting brackets are connected to the fixed plate through a pin shaft, and the mounting bracket is connected to the brush sliding block body through the connecting piece. The two cross bars are fixedly connected to the two mounting brackets, and the elastic member is installed between the two cross bars. The two mounting brackets are pulled towards the center by the elastic potential energy of the elastic member, so that the two brush sliding block bodies are always in close contact with the surface of the ring piece.

[0008] The connecting piece comprises an arc-shaped plate, a bolt, a connecting rod, a disc and a locking pin.

[0009] The arc-shaped plate is connected through the bolt and the mounting frame, the connecting rod is inserted into the circular through slot formed by the arc-shaped plate and the mounting frame, the disc is arranged between the brush sliding block body and the connecting rod, the disc is fixedly connected with the connecting rod, and the disc is connected with the brush sliding block body through the clamping pin.

[0010] Preferably, the fixing plate is provided with a mounting assembly for adjusting the distance between the fixing plate and the slip ring stator.

[0011] The mounting assembly comprises a sleeve, a sliding rod, a fixing disc and a positioning pin.

[0012] The sleeve is fixedly connected with the fixing plate, the sliding rod is inserted into the groove of the sleeve, the fixing disc is fixedly connected to the end of the sliding rod away from the sleeve, the fixing disc is used for being connected with the slip ring rotor, the sliding rod is connected with the sleeve through the positioning pin, and the distance between the fixing plate and the slip ring stator is changed by adjusting the position of the sliding rod in the sleeve.

[0013] Preferably, the sliding rod is uniformly provided with threaded holes for being connected with the positioning pin.

[0014] Preferably, the two brush sliding block bodies are uniformly machined with clamping grooves matched with the clamping pins, and the clamping grooves are annularly distributed on the two brush sliding block bodies.

[0015] Preferably, the two mounting frames are machined with semicircular grooves matched with the arc-shaped plate.

[0016] The self-compensation brush clamping device for the electric push slip ring is provided by improving the prior art, and has the following improvements and advantages compared with the prior art.

[0017] Through cooperation of the fixing plate, the mounting frame, the connecting piece, the cross rod and the elastic piece, the two ends of the elastic piece are mounted on the two cross rods, when wear occurs in the transmission process, the elastic piece pulls the two mounting frames to the center of the ring piece through the elastic potential energy, so that the brush sliding block body is always tightly attached to the surface of the ring piece, a self-compensation mechanism of the brush is formed, the self-compensation of the brush sliding block body after wear is realized through linkage of the fixing plate and the mounting frame, the reliability of high-power rotation transmission is improved, the elastic piece tensioning structure is adopted, the pressure of the brush sliding block body on the ring piece is constant in the transmission and rotation process, and the stability of the transmission process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a structural schematic diagram of the present application.

[0019] Figure 2 The figure is a structural schematic diagram of the fixing plate, the mounting frame and the elastic piece of the present application.

[0020] Figure 3 It is an exploded view of the arc plate, mounting frame, bolt and connecting rod of the application;

[0021] Figure 4 It is a structural schematic view of the sleeve, sliding rod and fixed disc of the application;

[0022] Figure 5 It is a structural schematic view of the brush sliding block body of the application.

[0023] Explanation of reference signs:

[0024] 1-brush sliding block body, 2-clamping assembly, 21-fixed plate, 22-mounting frame, 23-connector, 231-arc plate, 232-bolt, 233-connecting rod, 234-disc, 235-latch, 24-crossbar, 25-elastic member, 3-mounting assembly, 31-sleeve, 32-sliding rod, 33-fixed disc, 34-positioning pin. DETAILED DESCRIPTION

[0025] In this embodiment, as shown in Figure 1 and Figure 2 , a self-compensating brush clamping device for electrically propelled slip rings comprises two brush sliding block bodies 1, each of which is provided with a clamping assembly 2 for enhancing the fitting degree between the two brush sliding block bodies 1 and the ring piece:

[0026] The clamping assembly 2 comprises a fixed plate 21, two mounting frames 22, two connectors 23, two crossbars 24 and an elastic member 25.

[0027] The two mounting frames 22 are connected to the fixed plate 21 through a pin shaft, and the mounting frame 22 is connected to the brush sliding block body 1 through the connector 23. The two crossbars 24 are fixedly connected to the two mounting frames 22, respectively, and the elastic member 25 is installed between the two crossbars 24. The two mounting frames 22 are pulled to the center by the elastic potential energy of the elastic member 25, so that the two brush sliding block bodies 1 are always in close contact with the surface of the ring piece.

[0028] Further, the brush sliding block body 1 is machined with an arc surface for fitting with the outer periphery of the ring piece, and the fixed plate 21 is hinged with two mounting frames 22. The mounting frame 22 cooperates with the connector 23 to install the brush sliding block body 1. The two brush sliding block bodies 1 need to be closely fitted on the ring piece when in use. Each mounting frame 22 is fixed with a crossbar 24, which is used to install an elastic member 25. The elastic member 25 is a tension spring, which is connected to the crossbar 24 through its own hook. The brush sliding block body 1 is always in close contact with the surface of the ring piece through the elastic member 25, forming a self-compensation mechanism.

[0029] In some embodiments, as shown in Figure 1 and Figure 3 , the connecting piece 23 comprises an arc-shaped plate 231, a bolt 232, a connecting rod 233, a disc 234 and a bayonet 235, the arc-shaped plate 231 is connected with the mounting frame 22 through the bolt 232, the connecting rod 233 is inserted into the circular through slot formed by the arc-shaped plate 231 and the mounting frame 22, the disc 234 is arranged between the brush sliding block body 1 and the connecting rod 233, the disc 234 is fixedly connected with the connecting rod 233, and the disc 234 is connected with the brush sliding block body 1 through the bayonet 235.

[0030] Further, two connecting pieces 23 are arranged on each mounting frame 22, a semicircular groove is processed in the arc-shaped plate 231, the bolt 232 penetrates through the through hole in the mounting frame 22 and is connected with the arc-shaped plate 231, the connecting rod 233 is used to drive the disc 234 to rotate, and the bayonet 235 is inserted into the corresponding clamping groove in the side wall of the brush sliding block body 1, so as to realize the connection between the disc 234 and the brush sliding block body 1. Through the use of the connecting piece 23, the brush sliding block body 1 is convenient to replace.

[0031] In some embodiments, as shown in Figure 2 , the mounting assembly 3 is arranged in the fixed plate 21, the mounting assembly 3 is used to adjust the distance between the fixed plate 21 and the slip ring stator, the mounting assembly 3 comprises a sleeve 31, a sliding rod 32, a fixed disc 33 and a positioning pin 34, the sleeve 31 is fixedly connected with the fixed plate 21, the sliding rod 32 is inserted into the groove in the sleeve 31, the fixed disc 33 is fixedly connected with the end of the sliding rod 32 away from the sleeve 31, the fixed disc 33 is used to be connected with the slip ring rotor part, and the sliding rod 32 is connected with the sleeve 31 through the positioning pin 34. By adjusting the position of the sliding rod 32 in the sleeve 31, the distance between the fixed plate 21 and the slip ring stator is changed.

[0032] Further, the fixed disc 33 is fixed on the slip ring rotor part, thereby fixing the use position of the whole mechanism, a cavity is processed in the sleeve 31, the sliding rod 32 moves in the cavity in the sleeve 31, and a thread is processed on the outer wall of the positioning pin 34. The positioning pin 34 is used to fix the position of the sliding rod 32 in the sleeve 31.

[0033] In some embodiments, as shown in Figure 4 , the sliding rod 32 is uniformly distributed with threaded holes used to be connected with the positioning pin 34.

[0034] Further, when the positioning pin 34 is connected with the corresponding threaded hole on the sliding rod 32, the position of the sliding rod 32 in the sleeve 31 is fixed.

[0035] In some embodiments, as shown in Figure 5 , the two brush sliding block bodies 1 are processed with clamping grooves matched with the bayonet 235, and the clamping grooves are annularly distributed along the two brush sliding block bodies 1.

[0036] Further, the key 235 is inserted into the clamping groove of the brush slider body 1, and then the brush slider body 1 and the disc 234 are connected.

[0037] In some embodiments, as shown, the two mounting frames 22 are machined with semicircular grooves that are adapted to the arc-shaped plate 231. Figure 3

[0038] Further, the top end of each of the two mounting frames 22 is machined with a semicircular groove, and the semicircular groove and the arc-shaped plate 231 are adapted to form a circular cavity structure for mounting the connecting rod 233.

[0039] Working principle:

[0040] First, the disc 234 is installed on both sides of the brush slider body 1 through the key 235, then the connecting rod 233 is placed in the semicircular groove of the mounting frame 22, and then the arc-shaped plate 231 and the mounting frame 22 are connected through the bolt 232, and then the connecting rod 233 is placed in the circular through groove formed by the arc-shaped plate 231 and the mounting frame 22, and the connecting rod 233 can rotate in the circular through groove formed by the arc-shaped plate 231 and the mounting frame 22. After the installation of the brush slider body 1 and the mounting frame 22 is completed, the fixed disc 33 is connected with the slip ring stator part, the slide rod 32 is moved in the sleeve 31, the slide rod 32 and the sleeve 31 are connected through the positioning pin 34, and then the distance between the fixed plate 21 and the slip ring stator is changed. The elastic member 25 is in a stretched state during work, and the brush slider body 1 is pressed against the surface of the ring piece. When wear occurs during transmission, the elastic member 25 pulls the two mounting frames 22 to the center through its elastic potential energy, so that the brush slider body 1 is always in close contact with the surface of the ring piece, forming a self-compensation mechanism of the brush.​

Claims

1. A self-compensating brush holder for an electrically propelled slip ring, comprising two brush slider bodies (1), characterized in that, The two brush slider bodies (1) are provided with clamping assemblies (2) for enhancing the fitting degree between the two brush slider bodies (1) and the ring piece. The clamping assembly (2) comprises a fixed plate (21), two mounting racks (22), two connecting pieces (23), two cross bars (24) and an elastic piece (25). The two mounting racks (22) are connected with the fixed plate (21) through a pin shaft, the mounting rack (22) is connected with the brush slider body (1) through the connecting piece (23), the two cross bars (24) are fixedly connected on the two mounting racks (22) respectively, and the elastic piece (25) is arranged between the two cross bars (24) and pulls the two mounting racks (22) to the center through the elastic potential energy of the elastic piece (25), so that the two brush slider bodies (1) are always tightly fitted with the surface of the ring piece. The connecting piece (23) comprises an arc-shaped plate (231), a bolt (232), a connecting rod (233), a disc (234) and a snap pin (235). The arc-shaped plate (231) is connected with the mounting rack (22) through the bolt (232), the connecting rod (233) is inserted into a circular through groove formed by the arc-shaped plate (231) and the mounting rack (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 with the brush slider body (1) through the snap pin (235).

2. A self-compensating brush holder for electrically propelled sliprings according to claim 1, characterized in that The fixed plate (21) is provided with an installation assembly (3) for adjusting the distance between the fixed plate (21) and the slip ring stator. The installation assembly (3) comprises a sleeve (31), a sliding rod (32), a fixed disc (33) and a positioning pin (34). The sleeve (31) and the fixed plate (21) are fixedly connected, the sliding rod (32) is inserted into a groove in the sleeve (31), the fixed disc (33) is fixedly connected to one end of the sliding rod (32) away from the sleeve (31), the fixed disc (33) is used for being connected with the slip ring rotor, and the sliding rod (32) is connected with the sleeve (31) through the positioning pin (34). By adjusting the position of the sliding rod (32) in the sleeve (31), the distance between the fixed plate (21) and the slip ring stator is changed.

3. A self-compensating brush holder for electrically propelled sliprings according to claim 2, characterized in that The sliding rod (32) is uniformly provided with threaded holes for being connected with the positioning pin (34).

4. A self-compensating brush holder for electrically propelled sliprings according to claim 1, characterized in that, The two brush slider bodies (1) are uniformly provided with clamping grooves matched with the snap pins (235), and the clamping grooves are annularly distributed on the two brush slider bodies (1).

5. A self-compensating brush holder for electrically propelled sliprings according to claim 1, characterized in that, The two mounting racks (22) are uniformly provided with semicircular grooves matched with the arc-shaped plates (231).

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