Slip ring for motor

Abstract

The utility model discloses a slip ring for a motor, relates to the technical field of electric slip rings, and aims to solve the problems that the slip ring provided by the background technology is damaged due to long-time operation, low inter-ring insulation, low ground insulation and the like easily occur, and the existing slip ring is large in size, heavy in weight and low in practicability. Comprising an installation mechanism, the installation mechanism comprises an inner steel sleeve and an inner insulation sleeve, a slip ring assembly is arranged outside the inner insulation sleeve, the slip ring assembly comprises three slip ring sleeves, three leads and two inter-ring insulation sleeves, connecting grooves are formed in the outer walls of one sides of the slip ring sleeves, the three leads are fixedly arranged on the inner walls of the three slip ring sleeves respectively, and the outer walls of the inner insulation sleeve are sleeved with the two inter-ring insulation sleeves respectively. A small end cover is arranged outside the sliding ring sleeve, and six installation openings are formed in the small end cover. The utility model has the advantages of small volume, light weight, compact structure and large conductive bearing capacity, the phenomena of low inter-ring insulation, low ground insulation and the like are not easy to occur in the long-time operation process, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric slip ring technical field especially relates to a slip ring for motor. BACKGROUND

[0002] Electric slip ring is used for the most widely used slip ring in all slip ring series, also called brush, carbon brush, current collector ring, current collection ring, current collection ring, spin, rotary electrical joint, is used for transmitting power supply, signal power supply when rotating continuously without limitation, the power supply and terminal appliance of fixed structure and rotating structure of stator and rotor part are connected respectively, and rotates with it, according to the difference of its overall structure, is divided into real circle slip ring (dig a hole on the rotating body, install slip ring), empty circle slip ring (install slip ring on the rotating shaft), and separate slip ring, flat disc slip ring, mercury slip ring, special slip ring and the like.

[0003] In actual use, the slip ring will be damaged due to long time operation, and the inter-ring insulation and ground insulation are low, and the existing slip ring is large in size and heavy in weight, and low in practicability. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of slip ring for motor, solve the slip ring in prior art due to long time operation, slip ring will be damaged, and the inter-ring insulation and ground insulation are low, and the existing slip ring is large in size and heavy in weight, and low in practicability Problem.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of slip ring for motor, including installation mechanism, the installation mechanism includes inner steel sleeve and inner insulation sleeve, the outer portion of the inner insulation sleeve is equipped with slip ring assembly, the slip ring assembly includes three slip ring sleeves, three lead wires and two inter-ring insulation sleeves, the outer portion of the slip ring sleeve is equipped with small end cap, and six installation ports are opened on the annular outer wall of the small end cap, the inner portion of the small end cap is equipped with insulation assembly, the insulation assembly includes four insulation plates and three current collector rings, six communication assemblies are equipped between the four insulation plates, the communication assembly includes brush box, carbon brush and compression spring, the outer wall of the inner insulation sleeve is equipped with three installation grooves, and the inner insulation sleeve is sleeved on the outer wall of the inner steel sleeve.

[0007] Preferably, the outer wall of the inner insulation sleeve is provided with three installation grooves, and the inner insulation sleeve is sleeved on the outer wall of the inner steel sleeve.

[0008] Preferably, the three sliding ring sleeves are respectively sleeved on the outer wall of the inner insulation sleeve, and the three lead wires are respectively embedded in the three mounting grooves; two inter-ring insulation sleeves are respectively inserted into the connecting grooves of the two sliding ring sleeves, and the two inter-ring insulation sleeves are arranged between the three sliding ring sleeves.

[0009] Preferably, one side of the small end cover abuts against one side of the outer wall of the inner steel sleeve, and the small end cover is connected to one side of the outer wall of the end cover through bolts.

[0010] Preferably, the four insulation plates are respectively sleeved on the outer walls of the three sliding ring sleeves, and the four insulation plates are respectively sleeved on the inner wall of the small end cover; six limiting grooves are formed on one side of the outer wall of the four insulation plates close to the current collector ring groove, and a plurality of clamping grooves are formed on one side of the outer wall of the four insulation plates away from the current collector ring groove.

[0011] Preferably, one side of the brush box is clamped in the limiting groove, and one side of the brush box is clamped in the two clamping grooves; one end of the compression spring abuts against the outer wall of the carbon brush.

[0012] Preferably, three wire connecting posts in a ring shape are connected to the annular outer wall of the small end cover through bolts, and the three wire connecting posts are respectively connected to the current collector ring through the soft copper wires of the electric brush.

[0013] The utility model discloses the beneficial effects are:

[0014] 3 lead wires are respectively welded with 3 sliding rings after being bent in a mold, the steel sleeve is assembled in alignment with the inner insulation sleeve, the inter-ring insulation sleeve with the bow-shaped wire sliding ring is assembled to the outer side of the inner insulation sleeve, and finally the product is basically completed after being treated by dipping paint and pouring glue, each phase wire connecting post is connected to the current collector ring through the soft copper wire of the electric brush, the corresponding compression spring is installed into each brush box to apply sufficient pressure to the conduction of the electric brush and the sliding ring, the brush box and the insulation plate are installed by using the insulation screw to ensure the overall performance and high reliability, the internal parts of the small end cover are fixed on the end cover by 6 countersunk head screws to ensure the integrity, and the product is applied to the 91kW (the frequency converter direct current input end is 450DC, 202A) brushless permanent magnet direct current motor, and the product is tested and verified to be stable and reliable (short time 20min, long time can be used according to the user's requirement).

[0015] In conclusion, the utility model has the advantages of small size, light weight, compact structure and large electric conduction bearing capacity, and is not prone to the phenomena of low inter-ring insulation and low ground insulation in the long-time operation process, thereby improving the practicability. ACCURATE DRAWINGS

[0016] Figure 1 It is an overall front view structural schematic diagram of the sliding ring for the motor.

[0017] Figure 2A main view structural schematic diagram of a mounting mechanism of a slip ring for a motor is provided in the application.

[0018] Figure 3 A main view structural schematic diagram of a slip ring assembly of a slip ring for a motor is provided in the application.

[0019] Figure 4 A main view structural schematic diagram of an inter-ring insulation sleeve of a slip ring for a motor is provided in the application.

[0020] Figure 5 A side view structural schematic diagram of a small end cover of a slip ring for a motor is provided in the application.

[0021] Figure 6 A main view structural schematic diagram of an insulation assembly of a slip ring for a motor is provided in the application.

[0022] Figure 7 A main view structural schematic diagram of a communication assembly of a slip ring for a motor is provided in the application.

[0023] In the figure: 1, mounting mechanism; 101, inner steel sleeve; 102, inner insulation sleeve; 2, slip ring assembly; 201, slip ring sleeve; 202, lead wire; 203, inter-ring insulation sleeve; 3, small end cover; 4, insulation assembly; 401, insulation plate; 402, current collector ring; 5, communication assembly; 501, brush box; 502, carbon brush; 503, compression spring; 6, terminal post. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0025] Embodiment 1, refer to Figures 1-7A slip ring for motor, comprising a mounting mechanism 1, the mounting mechanism 1 comprises an inner steel sleeve 101 and an inner insulating sleeve 102, three mounting grooves are formed on the outer wall of the inner insulating sleeve 102, and the inner insulating sleeve 102 is sleeved on the outer wall of the inner steel sleeve 101, a slip ring assembly 2 is arranged outside the inner insulating sleeve 102, the slip ring assembly 2 comprises three slip ring sleeves 201, three lead wires 202 and two inter-ring insulating sleeves 203, the outer wall of each of the three slip ring sleeves 201 is provided with a connecting groove, the inner wall of each of the three slip ring sleeves 201 is provided with a lead wire 202, and the outer wall of each of the two inter-ring insulating sleeves 203 is sleeved on the inner insulating sleeve 102, the connecting grooves in the two inter-ring insulating sleeves 203 are inserted into the connecting grooves in the two slip ring sleeves 201, and the two inter-ring insulating sleeves 203 are arranged between the three slip ring sleeves 201, a small end cover 3 is arranged outside the slip ring sleeve 201, six mounting holes are formed in the annular outer wall of the small end cover 3, one side of the small end cover 3 abuts against one side of the outer wall of the inner steel sleeve 101, and the small end cover 3 is connected to one side of the outer wall of the end cover through bolts, an insulating assembly 4 is arranged in the small end cover 3, the insulating assembly 4 comprises four insulating plates 401 and three current collecting rings 402, the outer wall of each of the four insulating plates 401 is provided with a current collecting ring groove, and the inner wall of each of the three current collecting rings 402 is embedded in the current collecting ring groove, the outer wall of each of the four insulating plates 401 is provided with six limiting grooves, and the outer wall of each of the four insulating plates 401 is provided with a plurality of clamping grooves, six communication assemblies 5 are arranged between the four insulating plates 401, the communication assembly 5 comprises a brush box 501, a carbon brush 502 and a compression spring 503, the outer wall of the brush box 501 is provided with a fixing hole, the carbon brush 502 is embedded in the brush box 501, and the compression spring 503 is embedded in the two fixing holes, one side of the brush box 501 is clamped in the limiting groove, and one side of the brush box 501 is clamped in the two clamping grooves, one end of the compression spring 503 abuts against the outer wall of the carbon brush 502, and three wire terminals 6 are arranged on the annular outer wall of the small end cover 3 through bolts, and the three wire terminals 6 are connected with the current collecting rings 402 through soft copper wires.

[0026] Working principle: 3 lead wires 202 are respectively welded with 3 slip ring sleeves 201 after bending in the mold, the inner steel sleeve 101 is assembled in alignment with the inner insulating sleeve 102, the slip ring sleeve 201 with lead wire 202 is assembled to the inner insulating sleeve 102 outside the ring insulation sleeve 203, and finally the basic completion is achieved after the dipping paint and pouring glue treatment, each phase terminal 6 is connected with the current collector ring through the brush soft copper wire, the corresponding compression spring 503 is installed in each brush box 501 to apply sufficient pressure to the conduction of the brush 502 and the slip ring sleeve 201, the brush box 501 and the insulating plate 401 are installed by using insulating screws to ensure the overall performance and high reliability, the internal parts of the small end cover 3 are fixed on the end cover by 6 countersunk head screws to ensure the integrity, and the actual test is carried out on the slip ring structure under 160 DEG C. The test of phase-to-phase and ground insulation of the slip ring structure is carried out at 50Hz 5000ACV without breakdown and flashover phenomenon.

[0027] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A slip ring for an electric machine comprising a mounting mechanism (1), characterized in that The mounting mechanism (1) comprises an inner steel sleeve (101) and an inner insulation sleeve (102); The inner insulation sleeve (102) is externally provided with a slip ring assembly (2), the slip ring assembly (2) comprises three slip ring sleeves (201) each having a connecting slot opened on one side of the outer wall, three lead wires (202) each fixedly arranged on the inner wall of one of the three slip ring sleeves (201), and two inter-ring insulation sleeves (203) each sleeved on the outer wall of the inner insulation sleeve (102); The slip ring sleeve (201) is externally provided with a small end cover (3), and six mounting ports are opened on the annular outer wall of the small end cover (3); The small end cover (3) is internally provided with an insulation assembly (4), the insulation assembly (4) comprises four insulation plates (401) each having a collector ring slot opened on one side of the outer wall, and three collector rings (402) each embedded in one of the three collector ring slots; Six communication assemblies (5) are arranged between the four insulation plates (401), the communication assembly (5) comprises a brush box (501) each having a fixing hole opened on the outer wall, a carbon brush (502) embedded in the brush box (501), and a compression spring (503) each embedded in one of the two fixing holes.

2. A slip ring for an electric machine according to claim 1, characterized in that The inner insulation sleeve (102) is externally provided with three mounting slots, and the inner insulation sleeve (102) is sleeved on the outer wall of the inner steel sleeve (101).

3. A slip ring for an electric machine according to claim 2, characterized in that The three slip ring sleeves (201) are each sleeved on the outer wall of the inner insulation sleeve (102), and the three lead wires (202) are each embedded in one of the three mounting slots, and the two inter-ring insulation sleeves (203) are each inserted into one of the connecting slots on the two slip ring sleeves (201), and the two inter-ring insulation sleeves (203) are arranged between the three slip ring sleeves (201).

4. The slip ring for an electric machine according to claim 1, characterized in that, One side of the small end cover (3) is abutted on one side of the outer wall of the inner steel sleeve (101), and the small end cover (3) is connected to one side of the outer wall of the end cover by bolts.

5. The slip ring for an electric machine according to claim 1, characterized in that, The four insulation plates (401) are each sleeved on the outer wall of one of the three slip ring sleeves (201), and the four insulation plates (401) are each sleeved on the inner wall of the small end cover (3), one side of the outer wall of each of the four insulation plates (401) near the collector ring slot is provided with six limiting grooves, and one side of the outer wall of each of the four insulation plates (401) away from the collector ring slot is provided with a plurality of clamping grooves.

6. A slip ring for an electric machine according to claim 5, characterized in that One side of the brush box (501) is clamped in the limiting groove, and one side of the brush box (501) is clamped in two of the clamping grooves, and one end of the compression spring (503) is abutted on the outer wall of the carbon brush (502).

7. The slip ring for an electric machine according to claim 1, characterized in that, The annular outer wall of the small end cover (3) is connected by bolts with three wire terminals (6) arranged in a ring shape, and the three wire terminals (6) are each connected to the collector ring (402) by a soft copper wire.

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