Electric transmission device with abrasive dust directional collection function

Abstract

The utility model relates to an electric transmission device with an abrasive dust directional collection function. The electric transmission device comprises a housing, a base, a stator, an electric brush, a rotor, a conducting ring, an anode plate, a cathode plate, a cathode cover plate and an abrasive dust collection unit, the housing is fixed on the base, and the housing and the base define a cavity; the rotor is inserted in the cavity, the conducting ring is fixed on the rotor, the stator is fixed in the cavity, the electric brush is fixed on the stator, and the electric brush is in contact connection with the conducting ring; the anode plate and the cathode plate are respectively fixed on the bottom plate or the top of the chamber and are used for forming an electric field in the vertical direction in the chamber; the cathode cover plate covers the cathode plate, a through hole is formed in the cathode cover plate, under the action of an electric field, abrasive dust moves out from the position between the electric brush and the conducting ring, drifts upwards, penetrates through the through hole in the cathode cover plate, makes contact with the cathode plate, is electrically neutralized and falls into the abrasive dust collecting unit under the action of the electric field, and a large amount of abrasive dust is collected. Therefore, the problem that the charged abrasive dust of the electric transmission device is difficult to collect is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical connection, and in particular relates to an electrical transmission device with the function of directional collection of wear debris. Background Art

[0002] Slip ring is a common electrical transmission device, which is used to realize the connection of rotating bodies, the transmission of energy and signals, and the conversion of current between rotating wires and fixed wires. Slip rings have been widely used in high-end fields of industrial equipment such as medical equipment, aerospace, robotics, manufacturing and processing control systems. Slip rings mainly include stators and rotors. The relative movement between stators and rotors satisfies the premise of relative rotation and realizes the transmission of current or signals. With the advancement of technology, higher requirements are placed on the quality of slip rings.

[0003] The Chinese utility model patent with the authorization announcement number CN218770476U discloses "a new type of electric transmission device with a directional collection function of wear debris". The device includes a cover, a base, a stator, a brush, a rotor, a conductive ring, an anode plate and a cathode plate. The cover is fixed on the base, and the cover and the base are enclosed to form a chamber. The rotor is inserted in the chamber and can rotate freely. The conductive ring is fixed on the rotor. The stator is arranged in the chamber, and the brush is fixed on the stator, and the brush is contact-connected with the conductive ring. The anode plate and the cathode plate are respectively arranged at the top or bottom of the chamber to form an electric field in the chamber, and the electric field is used to migrate the wear debris out from between the brush and the conductive ring. The anode plate and the cathode plate are respectively arranged at the top and the bottom of the chamber to form a vertical electric field in the chamber. Under the action of the electric field force, the charged wear debris rises and is moved out, thereby preventing the wear debris from affecting the contact conduction between the brush and the conductive ring, and improving the stability of the new type of electric transmission device with a directional collection function of wear debris. The electric transmission device was jointly developed by our laboratory and enterprises. During use, the charged grinding debris is moved out from between the brush and the conductive ring under the action of the electric field, and gathers on the surface of the cathode plate shell and cannot be collected. Utility Model Content

[0004] In order to solve the problem of difficulty in collecting charged wear debris in an electric transmission device; the utility model provides an electric transmission device with directional collection of wear debris; in order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] An electric transmission device with directional collection of wear debris, comprising a cover, a base, a stator, a brush, a rotor, a conductive ring, an anode plate and a cathode plate; the cover is fixed on the base, and the cover and the base enclose a chamber; the rotor is inserted in the chamber, and the rotor can rotate freely relative to the base, the conductive ring is fixed on the rotor, the stator is fixed in the chamber, the brush is fixed on the stator, and the brush is contact-connected with the conductive ring; the anode plate and the cathode plate are respectively fixed to the bottom plate or the top of the chamber, and are used to form a vertical electric field in the chamber, and the electric field is used to make the wear debris migrate out from between the brush and the conductive ring; the electric transmission device with directional collection of wear debris also includes a cathode cover plate and a wear debris collection unit; the cathode cover plate is covered on the cathode plate, and a through hole is opened on the cathode cover plate, and the through hole is used for the wear debris to pass through; the wear debris collection unit is arranged below the cathode cover plate, and is used to collect the wear debris that has lost its charge.

[0006] The utility model has the beneficial effect of an electric transmission device for directional collection of wear chips: under the driving action of the rotor, the conductive ring rotates, the conductive ring is contact-connected with the brush, a small amount of aluminum chips with positive charge is generated, and a vertical electric field is formed between the anode plate and the cathode plate. Under the action of the electric field, the wear chips move out from between the brush and the conductive ring, drift upward, pass through the through hole on the cathode cover plate, contact the cathode plate, and are electrically neutralized. Under the action of the electric field, they fall into the wear chip collection unit, completing the collection of a large amount of wear chips, thereby solving the problem of difficult collection of charged wear chips in the electric transmission device.

[0007] Furthermore, the cathode cover plate is an annular plate, the through holes are arc-shaped strip holes, and the arc-shaped strip holes include a plurality of arc-shaped strip holes that are evenly spaced and arranged along the circumference of the annular plate.

[0008] Beneficial effects: A central hole is designed in the middle of the annular plate for the rotor to pass through, eliminating interference during installation; the through holes are designed as arc-shaped strip holes to facilitate charged grinding chips to pass through the through holes.

[0009] Furthermore, the lower end surface of the annular plate is inclined in the radial direction, and the outer side of the lower end surface of the annular plate is higher than the inner side; and the arc-shaped strip holes are arranged on the outer side of the annular plate.

[0010] Beneficial effects: The lower end surface of the annular plate is inclined with a low center and a high outside. Under the action of the electric field, the charged abrasive chips gather along the lower end surface of the annular plate toward the outer edge and pass through the arc-shaped strip holes, reducing the amount of charged abrasive chips gathered on the lower end surface of the annular plate.

[0011] Furthermore, a plurality of countersunk holes are provided on the annular plate, threaded holes are provided on the cathode plate, and screws are inserted into the countersunk holes and threaded holes to achieve fixed connection between the annular plate and the cathode plate.

[0012] Beneficial effect: The connection between the annular plate and the cathode plate is achieved by screws, and the connection is firm and stable.

[0013] Furthermore, the wear debris collection unit is an annular collection groove, the outer side of the annular collection groove is arranged on the annular plate, an annular groove is opened on the upper end surface of the annular collection groove, the height of the inner wall of the annular groove is lower than the outer wall, and the annular groove is located directly below the arc-shaped strip hole.

[0014] Beneficial effects: The annular collecting groove is located directly below the arc-shaped strip hole. After the charged wear debris contacts the cathode plate, the charge is neutralized and falls into the annular groove under the action of the electric field to complete the collection of the wear debris. The height of the inner wall of the annular groove is lower than the outer wall, and a gap is formed on the inner side for the charged wear debris to pass through; the outer wall is used to fix the annular collecting groove.

[0015] Furthermore, a triangular inclined platform is provided on the lower end surface of the annular collecting groove; and the lower end surface is inclined upward in the radial direction inwardly of the annular collecting groove.

[0016] Beneficial effect: Under the action of the electric field, part of the charged wear debris gathers on the lower end surface of the annular collecting groove, and the lower end surface is tilted and guided upward to remove the charged wear debris.

[0017] Furthermore, the electric transmission device with directional collection of wear debris also includes an insulating sleeve, which is sleeved on the rotor, and the conductive ring is fixed on the upper end surface of the insulating sleeve; along the radial direction of the insulating sleeve outward, the lower end surface of the insulating sleeve is inclined upward.

[0018] Beneficial effect: the insulating disk provides a fixed position for the guide ring, and the lower end surface of the insulating sleeve is inclined upward to provide guidance for charged grinding chips, thereby preventing the lower end surface of the insulating sleeve from accumulating charges and being unable to be collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of an embodiment of the electric transmission device with directional collection of wear debris of the utility model;

[0020] Figure 2 It is a cross-sectional view of an embodiment of the electric transmission device with directional collection of wear debris of the utility model;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 It is a schematic diagram of a wear debris collection unit of an embodiment of an electric transmission device with directional wear debris collection of the utility model.

[0023] Numbers in the figure: 1-cover, 2-base, 3-stator, 4-brush, 5-rotor, 6-conductive ring, 7-anode plate, 8-cathode plate, 9-cathode cover, 10-countersunk hole, 11-arc-shaped bar hole, 12-annular collecting groove, 13-annular groove, 14-triangular tilting table, 15-insulating sleeve, 16-wear chip collection unit. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0025] The specific structure of the embodiment of the electric transmission device with directional collection of wear debris of the utility model is as follows Figure 1 and Figure 2 As shown, it includes a cover 1, a base 2, a stator 3, a brush 4, a rotor 5, a conductive ring 6, an anode plate 7 and a cathode plate 8. The cover 1 is fixed on the base 2, and the cover 1 and the base 2 enclose a chamber; the rotor 5 is inserted in the chamber. The upper end of the rotor 5 is inserted into the bearing in the cover 1; the lower end is inserted into the bearing embedded in the base 2, and the lower end is connected to the motor or other driving mechanism; the rotor can rotate freely relative to the base. The conductive ring 6 is fixed on the rotor 5, the stator 3 is fixed in the chamber, the brush 4 is fixed on the stator 3, and the brush 4 is contact-connected with the conductive ring 6. The anode plate 7 and the cathode plate 8 are respectively fixed on the bottom plate or the top of the chamber, and are used to form a vertical electric field in the chamber, and the electric field is used to migrate the wear debris out from between the brush 4 and the conductive ring 6. For the specific structure, see the Chinese utility model patent with the authorization announcement number CN218770476U, which discloses "a new type of electric transmission device with a wear debris directional collection function".

[0026] like Figure 2 and Figure 3 As shown, the electric transmission device with directional collection of wear debris also includes a cathode cover plate 9 and a wear debris collection unit 16; the cathode cover plate 9 is covered on the cathode plate 8, and a through hole is opened on the cathode cover plate 9, and the through hole is used for the wear debris to pass through; the wear debris collection unit 16 is arranged below the cathode cover plate 9, and is used to collect wear debris that has lost its charge.

[0027] In this embodiment, if Figure 4 As shown, the cathode cover plate 9 is an annular plate, and a plurality of countersunk holes 10 are provided on the annular plate, specifically two of them, which are symmetrically arranged; a threaded hole is provided on the cathode plate 8, and screws are inserted into the countersunk holes 10 and the threaded holes to achieve a fixed connection between the annular plate and the cathode plate 8; the connection between the annular plate and the cathode plate 8 is achieved by using screws, and the connection is firm and stable.

[0028] like Figure 4As shown, the through hole is an arc-shaped strip hole 11, and the arc-shaped strip holes 11 include a plurality of arc-shaped strip holes 11, which are evenly spaced along the circumference of the annular plate; a central hole is designed in the middle of the annular plate for the rotor 5 to pass through, so as to eliminate interference during installation; the through hole is designed as an arc-shaped strip hole 11, so that charged wear debris can pass through the through hole. The lower end surface of the annular plate is inclined radially, and the outer side of the lower end surface of the annular plate is higher than the inner side; the arc-shaped strip hole 11 is opened on the outer side of the annular plate; the lower end surface of the annular plate is inclined in the middle and the outer side is high; the charged wear debris, under the action of the electric field, gathers along the lower end surface of the annular plate toward the outer edge and passes through the arc-shaped strip holes 11, so as to reduce the amount of charged wear debris gathered on the lower end surface of the annular plate. In other embodiments, the through hole is a cylindrical hole, which includes a plurality of arc-shaped strip holes 11, which are evenly spaced along the circumference of the annular plate.

[0029] like Figure 3 and Figure 4 As shown, the wear debris collection unit 16 is an annular collection groove 12, the outer side of the annular collection groove 12 is arranged on an annular plate, and an annular groove 13 is opened on the upper end surface of the annular collection groove 12, the inner side wall of the annular groove 13 is lower than the outer side wall, and the annular groove 13 is located directly below the arc-shaped strip hole 11; the annular collection groove 12 is located directly below the arc-shaped strip hole 11, and the charged wear debris is neutralized after contacting the cathode plate 8, and falls into the annular groove 13 under the action of the electric field to complete the collection of the wear debris; the inner side wall of the annular groove is lower than the outer side wall, and a gap is formed inside for the charged wear debris to pass through; the outer side wall is used to fix the annular collection groove 12. A triangular inclined platform 14 is arranged on the lower end surface of the annular collection groove 12; along the radial direction of the annular collection groove 12, the lower end surface is inclined upward; under the action of the electric field, part of the charged wear debris gathers on the lower end surface of the annular collection groove 12, and the lower end surface is inclined upward to guide the charged wear debris to be removed. In other embodiments, under the premise of satisfying the removal of charged wear debris, the triangular inclined platform may not be provided on the lower end surface of the annular collecting groove.

[0030] like Figure 2 As shown, the electric transmission device with directional collection of wear debris also includes an insulating sleeve 15, which is sleeved on the rotor 5, and the conductive ring 6 is fixed on the upper end surface of the insulating sleeve 15; along the radial direction of the insulating sleeve 15 outward, the lower end surface of the insulating sleeve 15 is inclined upward; the insulating disk provides a fixed position for the guide ring, and the lower end surface of the insulating sleeve 15 is inclined upward to provide guidance for the charged wear debris, thereby preventing the lower end surface of the insulating sleeve 15 from accumulating charges and being unable to be collected.

[0031] When in use, under the driving action of the rotor 5, the conductive ring 6 rotates, and the conductive ring 6 is in contact connection with the brush 4, generating a small amount of aluminum chips with positive charge, and a vertical electric field is formed between the anode plate 7 and the cathode plate 8. Under the action of the electric field, the wear chips move out from between the brush 4 and the conductive ring 6, drift upward, and under the guidance of the triangular inclined platform 14 and the lower end surface of the annular plate, pass through the arc-shaped strip holes 11 on the cathode cover plate 9, contact with the cathode plate 8, and undergo electrical neutralization. Under the action of the electric field, the wear chips fall into the wear chip collection unit 16, completing the collection of a large amount of wear chips, thereby solving the problem of the difficulty in collecting charged wear chips in the electric transmission device.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An electric transmission device with directional collection of wear debris, comprising a cover, a base, a stator, a brush, a rotor, a conductive ring, an anode plate and a cathode plate; the cover is fixed on the base, and the cover and the base form a chamber; the rotor is inserted in the chamber, and the rotor can rotate freely relative to the base, the conductive ring is fixed on the rotor, the stator is fixed in the chamber, the brush is fixed on the stator, and the brush is contact-connected with the conductive ring; the anode plate and the cathode plate are respectively fixed to the bottom plate or the top of the chamber, and are used to form a vertical electric field in the chamber, and the electric field is used to migrate the wear debris out from between the brush and the conductive ring; it is characterized in that The electric transmission device with directional collection of wear debris also includes a cathode cover and a wear debris collection unit; the cathode cover is arranged on the cathode plate, and a through hole is opened on the cathode cover, and the through hole is used for allowing wear debris to pass through; the wear debris collection unit is arranged below the cathode cover to collect wear debris that has lost its charge.

2. The electric transmission device with directional collection of wear debris according to claim 1, characterized in that: The cathode cover plate is an annular plate, and the through holes are arc-shaped strip holes. The arc-shaped strip holes include a plurality of arc-shaped strip holes that are evenly spaced and arranged along the circumference of the annular plate.

3. The electric transmission device with directional collection of wear debris according to claim 2, characterized in that: The lower end surface of the annular plate is inclined in the radial direction, and the outer side of the lower end surface of the annular plate is higher than the inner side; the arc-shaped strip holes are arranged on the outer side of the annular plate.

4. The electric transmission device with directional collection of wear debris according to claim 3, characterized in that: A plurality of countersunk holes are provided on the annular plate, a threaded hole is provided on the cathode plate, and screws are inserted into the countersunk holes and the threaded holes to achieve fixed connection between the annular plate and the cathode plate.

5. The electric transmission device with directional collection of wear debris according to claim 3 or 4, characterized in that: The wear debris collection unit is an annular collection groove, the outer side of the annular collection groove is arranged on the annular plate, an annular groove is opened on the upper end surface of the annular collection groove, the height of the inner wall of the annular groove is lower than the outer wall, and the annular groove is located directly below the arc-shaped strip hole.

6. The electric transmission device with directional collection of wear debris according to claim 5, characterized in that: A triangular inclined platform is arranged on the lower end surface of the annular collecting groove; the lower end surface is inclined upward in the radial direction inwardly of the annular collecting groove.

7. The electric transmission device with directional collection of wear debris according to claim 1 or 6, characterized in that: The electric transmission device with directional collection of wear debris also includes an insulating sleeve, which is sleeved on the rotor, and the conductive ring is fixed on the upper end surface of the insulating sleeve; along the radial direction of the insulating sleeve outward, the lower end surface of the insulating sleeve is inclined upward.

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