An ultra-high-speed slip ring detection system and test method thereof

Abstract

The present invention relates to the technical field of ultra-high-speed conductive slip rings, and in particular to an ultra-high-speed slip ring detection system and a test method thereof, comprising a posture control system and a cooling system arranged on one side of the posture control system, wherein the posture control system drives the ultra-high-speed slip ring to rotate, and the cooling system delivers coolant to the ultra-high-speed conductive slip ring or / and the posture control system to cool it. The normal operating temperature range of the ultra-high speed conductive slip ring is ‑20°C to +85°C. After accurate detection by instruments, this cooling system can stably control the temperature of the ultra-high speed conductive slip ring and the brushless DC motor under test to 0°C to +60°C, and be careful to prevent the high temperature of the test from causing structural damage to the ultra-high speed conductive slip ring.

Description

Technical Field

[0001] The invention relates to the technical field of ultra-high-speed conductive slip rings, and in particular to an ultra-high-speed slip ring detection system and a testing method thereof. Background Art

[0002] Conductive slip rings are precision power transmission devices that realize power and signal transmission between two relatively rotating mechanisms. They are widely used in aerospace, radar communications, intelligent production lines, etc. They are the core components of equipment in these application fields. Conductive slip rings have both electrical transmission and rotation functions. Figure 1 As shown in the figure, the electrical transmission function of the conductive slip ring is mainly to transmit electrical signals between the rotating part and the stationary part through wires and sliding friction pairs. Figure 2 As shown, the rotation function: the conductive slip ring is divided into a rotating part and a stationary part. The rotating part and the stationary part are driven by a mechanical interface to produce relative rotational motion, thereby realizing n±360° unlimited rotation of the rotating part and the stationary part. Figure 3 As shown, the conductive slip ring is supported by bearings at the rotating part and the stationary part to form n±360° unlimited rotation, and relies on the friction pair between the rotating part and the stationary part to realize the power and signal transmission between the rotating part and the stationary part.

[0003] Ultra-high speed conductive slip rings have emerged in response to the requirements of mechanical equipment in recent years. They require the speed of the slip ring to be more than tens of thousands of revolutions per minute, and put forward extremely high requirements for reliability and long life at ultra-high speeds. Their performance and life determine the performance and life of these equipment; therefore, ultra-high speed conductive slip rings must be tested for performance and life before leaving the factory. The ultra-high speed slip ring test system can simulate the ultra-high speed rotation posture of the equipment in the application field, and with some general testing instruments, the performance and life of the ultra-high speed conductive slip ring can be tested.

[0004] Defects and shortcomings of the existing technology:

[0005] At present, the application scope of the conductive slip ring test system is relatively small, and it is only suitable for testing conductive slip rings with a rotation speed below 10,000 revolutions per minute. For ultra-high speed conductive slip rings with a rotation speed of more than 10,000 revolutions per minute, there is still a lack of a complete supporting test system. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides an ultra-high speed slip ring detection system and a testing method thereof.

[0007] The present invention provides the following technical solution: an ultra-high-speed slip ring detection system, comprising a posture control system and a cooling system arranged on one side of the posture control system, wherein the posture control system drives the ultra-high-speed slip ring to rotate, and the cooling system transports coolant to the ultra-high-speed conductive slip ring and / or the posture control system to cool it.

[0008] Furthermore, the posture control system includes a brushless DC motor, a support plate, a flat square transmission shaft, a tray, a linear optical axis and a frequency converter control end, the brushless DC motor is arranged below the support plate, the flat square transmission shaft is vertically arranged above the support plate, and its lower end is connected to the output shaft of the brushless DC motor, and the tray is arranged above the support plate so as to be liftable through the linear optical axis.

[0009] Furthermore, the tray is connected to the linear optical axis via a fastening sleeve, the fastening sleeve is provided with a plurality of locking nuts, and the tray is provided with a mounting through hole.

[0010] Furthermore, the cooling system includes a mounting base, a cooling tower, a first delivery pump, a second delivery pump, a coolant and a liquid storage tank. Several cooling towers are arranged in parallel on the mounting base. The cooling tower is connected to an ultra-high-speed conductive slip ring or / and a posture control system through the first delivery pump. The liquid storage tank is provided with coolant, and the liquid storage tank is connected to the cooling tower through the second delivery pump.

[0011] Furthermore, the coolant includes cooling oil or cooling water.

[0012] Furthermore, a cooling fan is provided on the mounting base.

[0013] Furthermore, the cooling tower is cylindrical in shape as a whole, and a cooling cavity is provided inside the cooling tower, and the cooling cavity is bent.

[0014] A detection method for an ultra-high-speed slip ring detection system, characterized in that it comprises the following steps:

[0015] S1. Insert the flat square transmission shaft into the connection port of the ultra-high speed conductive slip ring rotor, and place the slip ring and transmission shaft assembly on the tray;

[0016] S2. Adjust the height of the tray so that the flat square drive shaft is pinned into the connection port of the brushless DC motor. Use the elastic chuck to tighten and fix the drive shaft so that the ultra-high speed conductive slip ring rotor rotates together with the brushless DC motor.

[0017] S3. The coolant in the liquid storage tank is sent to the oil inlet below the ultra-high speed conductive slip ring. The coolant fills the entire cavity of the stator. The heat-absorbing cooling oil rises and is pumped out from the oil outlet above the ultra-high speed conductive slip ring through the oil pump and sent to the cooling oil tower.

[0018] The invention relates to an ultra-high speed slip ring detection system and a test method thereof, and the beneficial effects are as follows: 1. A flat square transmission shaft cooperates with an elastic chuck to transmit torque together, and a brushless DC motor has sensitive running accuracy. Even if the ultra-high speed conductive slip ring has a long axial length, the radial runout can be guaranteed to be ≤0.1mm, and the damage to the ultra-high speed conductive slip ring can be ignored; 2. The normal operating temperature range of the ultra-high speed conductive slip ring is -20°C to +85°C. After accurate detection by an instrument, this cooling system can stably control the temperature of the ultra-high speed conductive slip ring and the brushless DC motor under test to be within 0°C to +60°C, and prevent the structural damage of the ultra-high speed conductive slip ring caused by the high test temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the electrical transmission function of the conductive slip ring;

[0021] Figure 2 It is a schematic diagram of the rotation function of the conductive slip ring;

[0022] Figure 3 This is the working principle diagram of the conductive slip ring;

[0023] Figure 4 It is a schematic diagram of the structure of the ultra-high-speed slip ring test system;

[0024] Figure 5 It is a schematic diagram of the structure of an ultra-high speed slip ring;

[0025] The markings in the figure are: 1. Brushless DC motor; 2. Support plate; 3. Flat square transmission shaft; 4. Tray; 5. Linear optical axis; 6. Inverter control end; 7. Mounting base; 8. Cooling tower; 11. Fastening sleeve; 12. Locking nut; 13. Cooling fan. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the concept, specific structure and technical effects of the present invention in combination with the embodiments and the accompanying drawings, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to another feature, or it can be indirectly fixed or connected to another feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the various components of the present invention in the accompanying drawings.

[0027] Example 1

[0028] like Figures 4 to 5 As shown, an ultra-high-speed slip ring detection system includes a posture control system and a cooling system arranged on one side of the posture control system. The posture control system drives the ultra-high-speed slip ring to rotate, and the cooling system transports coolant to the ultra-high-speed conductive slip ring or / and the posture control system to cool it. The posture control system includes a brushless DC motor 1, a support plate 2, a flat square transmission shaft 3, a tray 4, a linear optical axis 5 and a frequency converter control terminal 6. The brushless DC motor 1 is arranged below the support plate 2, the flat square transmission shaft 3 is vertically arranged above the support plate 2, and its lower end is connected to the output shaft of the brushless DC motor 1, and the tray 4 is arranged above the support plate 2 so as to be liftable through the linear optical axis 5. The tray 4 is connected to the linear optical axis 5 through a fastening sleeve 11, and a plurality of locking nuts 12 are arranged on the fastening sleeve 11, and a mounting through hole is arranged on the tray 4. The cooling system includes a mounting seat 7, a cooling tower 8, a first delivery pump, a second delivery pump, cooling oil and a liquid storage tank. Several cooling towers 8 are arranged in parallel on the mounting seat 7. The cooling towers 8 are connected to the ultra-high-speed conductive slip ring through the first delivery pump. The liquid storage tank is provided with No. 5 precision spindle oil, and the liquid storage tank is connected to four of the cooling towers 8 through the second delivery pump. A cooling fan 13 is provided on the mounting seat 7 to cool the cooling oil in the cooling tower.

[0029] No. 5 precision spindle oil will not deteriorate or change color after long-term use, prolonging the service life of ultra-high speed conductive slip rings, eliminating the need for frequent oil changes and maintenance, effectively reducing maintenance costs, and increasing profits for enterprises. Because of its following five characteristics, it is used as the cooling oil of this system: 1. It has good lubricity. The spindle oil has a variety of anti-wear additives, which can form effective lubrication on the surface of various parts of the rotor and effectively protect them from wear; 2. Good oxidation resistance: no sediment will be generated in the sealed circulation system, avoiding wear on brushes and rings, and ensuring equipment accuracy; 3. Excellent anti-rust performance: spindle oil has good anti-rust and anti-corrosion properties, which can effectively inhibit the corrosion of equipment caused by the invasion of water; 4. Good cooling performance: It has excellent heat dissipation performance and can quickly take away the heat generated by the shaft, brushes and rings during ultra-high speed operation; 5. Good cleanliness: It can effectively protect the accuracy of the brushes, and will not form sludge and sediment during long-term operation.

[0030] Example 2

[0031] An ultra-high-speed slip ring detection system includes a posture control system and a cooling system arranged on one side of the posture control system. The posture control system drives the ultra-high-speed slip ring to rotate, and the cooling system delivers coolant to the ultra-high-speed conductive slip ring or / and the posture control system to cool it. The posture control system includes a brushless DC motor 1, a support plate 2, a flat square transmission shaft 3, a tray 4, a linear optical axis 5, and a frequency converter control terminal 6. The brushless DC motor 1 is arranged below the support plate 2, the flat square transmission shaft 3 is vertically arranged above the support plate 2, and its lower end is connected to the output shaft of the brushless DC motor 1, and the tray 4 is arranged above the support plate 2 so as to be liftable through the linear optical axis 5. The tray 4 is connected to the linear optical axis 5 through a fastening sleeve, and a plurality of locking nuts 12 are arranged on the fastening sleeve 11, and a mounting through hole is arranged on the tray 4. The cooling system includes a mounting base 7, a cooling tower 8, a first delivery pump, a second delivery pump, cooling water and a liquid storage tank. Several cooling towers are arranged in parallel on the mounting base. The cooling tower 8 is connected to the brushless DC motor through the first delivery pump. The cooling water in the liquid storage tank is pumped into the cooling channel of the brushless DC motor. After cooling the motor, the heat-absorbing cooling water passes through the four cooling water towers 8 connected in series in sequence, is cooled and then transported back to the liquid storage tank.

[0032] Example 3

[0033] A detection method for an ultra-high-speed slip ring detection system, characterized in that it comprises the following steps:

[0034] S1. Insert the flat square transmission shaft into the connection port of the ultra-high speed conductive slip ring rotor, and place the slip ring and transmission shaft assembly on the tray;

[0035] S2. Adjust the height of the tray, so that the flat square drive shaft is pinned into the connection port of the brushless DC motor 1, and the drive shaft is tightened and fixed with an elastic chuck, so that the ultra-high speed conductive slip ring rotor rotates together with the brushless DC motor;

[0036] S3. The coolant in the liquid storage tank is sent to the oil inlet below the ultra-high speed conductive slip ring. The coolant fills the entire cavity of the stator. The heat-absorbing cooling oil rises and is pumped out from the oil outlet above the ultra-high speed conductive slip ring through the oil pump and sent to the cooling oil tower. The cooling water in another liquid storage tank is sent to the cooling channel of the brushless DC motor through a water pump. After cooling the motor, the heat-absorbing cooling water passes through four cooling water towers connected in series in turn, is cooled and sent back to the liquid storage tank.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultra-high-speed slip ring detection system, characterized in that: It comprises a posture control system and a cooling system arranged on one side of the posture control system, wherein the posture control system drives the ultra-high-speed slip ring to rotate, and the cooling system delivers cooling liquid to the ultra-high-speed conductive slip ring or / and the posture control system to cool it; The posture control system includes a brushless DC motor, a support plate, a flat square transmission shaft, a tray, a linear optical axis and a frequency converter control end, wherein the brushless DC motor is arranged below the support plate, the flat square transmission shaft is vertically arranged above the support plate, and its lower end is connected to the output shaft of the brushless DC motor, and the tray is arranged above the support plate so as to be liftable through the linear optical axis; The tray is connected to the linear optical axis through a fastening sleeve, the fastening sleeve is provided with a plurality of locking nuts, and the tray is provided with a mounting through hole; The cooling system comprises a mounting seat, a cooling tower, a first delivery pump, a second delivery pump, a coolant and a liquid storage tank, wherein a plurality of cooling towers are arranged in parallel on the mounting seat, the cooling towers are connected to an ultra-high-speed conductive slip ring or / and a posture control system through the first delivery pump, the liquid storage tank is provided with a coolant, and the liquid storage tank is connected to the cooling tower through the second delivery pump; The cooling tower is cylindrical in shape as a whole, and a cooling cavity is provided inside the cooling tower, and the cooling cavity is bent; The detection process includes the following steps: S1. Insert the flat square transmission shaft into the connection port of the ultra-high speed conductive slip ring rotor, and place the slip ring and transmission shaft assembly on the tray; S2. Adjust the height of the tray so that the flat square drive shaft is pinned into the connection port of the brushless DC motor, and tighten the drive shaft with an elastic chuck to make the ultra-high speed conductive slip ring rotor rotate with the brushless DC motor; S3. The coolant in the liquid storage tank is sent to the oil inlet below the ultra-high speed conductive slip ring. The coolant fills the entire cavity of the stator. The heat-absorbing cooling oil rises and is pumped out from the oil outlet above the ultra-high speed conductive slip ring through the oil pump and sent to the cooling oil tower.

2. The ultra-high speed slip ring detection system according to claim 1, characterized in that: The coolant includes cooling oil or cooling water.

3. The ultra-high speed slip ring detection system according to claim 1, characterized in that: A cooling fan is arranged on the mounting seat.

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