Disturbance force compensation type air floatation slewing device

Abstract

The invention provides a disturbing force compensation type air flotation slewing gear which comprises an air flotation bearing, a motor, a coupler, a first transmission shaft, a second transmission shaft and a friction force adjustable mechanism, the air flotation bearing comprises a stator assembly and a rotor, the stator assembly is sleeved with the rotor, and the friction force adjustable mechanism is installed on the outer side of the rotor. The two ends of the stator assembly are provided with a first transmission shaft and a second transmission shaft respectively. An output shaft of the motor is connected with the first transmission shaft through a coupler. The motor has the beneficial effects that the friction force adjustable mechanism is arranged between the stator and the rotor, when the stator and the rotor move relatively, friction force can be provided, the friction force is adjustable, an air film is formed by inputting an air source, a load is connected through a rope, the rotating direction and speed of the stator are adjusted, and compensation of system disturbance force is achieved.

Description

Technical Field

[0001] The invention belongs to the field of micro-low gravity technology, and in particular relates to an interference force compensation type air floating rotation device. Background Art

[0002] The air-floating rotating device has a small rotation resistance due to its own characteristics, but when it is used under load, the rotation resistance increases due to the introduction of interference forces from other structures. Therefore, an interference force compensation type air-floating rotating device is proposed. Summary of the invention

[0003] In view of this, the present invention aims to provide an interference force compensation type air floating rotating device to solve the above-mentioned deficiencies in the prior art.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A disturbance force compensation type air floating rotating device comprises an air floating bearing, a motor, a coupling, a No. 1 transmission shaft, a No. 2 transmission shaft and an adjustable friction mechanism. The air floating bearing comprises a stator assembly and a rotor. The outer side of the stator assembly is sleeved with the rotor, and the adjustable friction mechanism is installed on the outer side of the rotor. The No. 1 transmission shaft and the No. 2 transmission shaft are respectively installed at both ends of the stator assembly, and the output shaft of the motor is connected to the No. 1 transmission shaft through a coupling.

[0006] Furthermore, the stator assembly includes a stator cover and a stator main shaft, one side of the stator cover is connected to the first transmission shaft, the other side of the stator cover is connected to one end of the stator main shaft, the rotor is sleeved on the outer side of the stator main shaft, and the other end of the stator main shaft is connected to the second transmission shaft.

[0007] Furthermore, the adjustable friction mechanism includes a No. 1 spring plunger, a No. 2 spring plunger, a No. 1 plunger mounting plate and a No. 2 plunger mounting plate, the No. 1 plunger mounting plate is installed to the stator pressure cover and the outside of the rotor, the No. 2 plunger mounting plate is installed to the outside of the rotor and the stator main shaft, and the No. 1 spring plunger and the No. 2 spring plunger are respectively installed to the rotor through the No. 1 plunger mounting plate and the No. 2 plunger mounting plate.

[0008] Furthermore, it also includes a No. 1 bearing, a No. 2 bearing and a bearing fixing bracket, wherein the bearing fixing bracket is a U-shaped structure, and a No. 1 transmission shaft and a No. 2 transmission shaft are respectively installed at both ends of the bearing fixing bracket, and the No. 1 transmission shaft is installed to the bearing fixing bracket through the No. 1 bearing, and the No. 2 transmission shaft is installed to the bearing fixing bracket through the No. 2 bearing.

[0009] Furthermore, it also includes a motor fixing frame, which is installed on one side of the bearing fixing bracket, and the motor is installed on the motor fixing frame.

[0010] Furthermore, it also includes a rope, the outer side of the rotor is opened in an annular groove, the rope is arranged in the annular groove to connect the load outside, and the load is used to drive the rotor to rotate.

[0011] Furthermore, it also includes an air pipe rotary joint, one end of which is connected to one end of the second transmission shaft, and the other end of the air pipe rotary joint is connected to an external air source.

[0012] Compared with the prior art, the interference force compensation type air floating rotating device described in the present invention has the following advantages:

[0013] The interference force compensation type air floating rotating device described in the present invention provides an adjustable friction mechanism between the stator and the rotor, thereby providing friction when the stator and the rotor move relative to each other, and the friction is adjustable. By inputting an air source to form an air film and connecting the load through a rope, the rotation direction and speed of the stator are adjusted to achieve compensation for the interference force of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic cross-sectional view of the overall structure described in an embodiment of the present invention.

[0016] Description of reference numerals:

[0017] 1. No. 1 transmission shaft; 2. Coupling; 3. Motor; 4. Motor fixing frame; 5. No. 1 bearing; 6. Bearing fixing bracket; 7. No. 1 plunger mounting plate; 8. Stator gland; 9. Rotor; 10. No. 1 spring plunger; 11. Rope; 12. No. 2 spring plunger; 13. No. 2 plunger mounting plate; 14. Stator main shaft; 15. Air pipe rotary joint; 16. No. 2 transmission shaft; 17. No. 2 bearing. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected 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 by specific circumstances.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0022] like Figure 1 As shown, an interference force compensation type air-floating rotary device includes an air-floating bearing, a motor 3, a coupling 2, a motor fixing frame 4, a No. 1 transmission shaft 1, a No. 2 transmission shaft 16, and a friction force adjustable mechanism. The air-floating bearing includes a stator assembly and a rotor 9; the stator is provided with a No. 1 transmission shaft 1 and a No. 2 transmission shaft 16, which can be designed as an integral unit with the stator assembly or can be connected separately; the motor 3 is connected to the No. 1 transmission shaft 1 through the coupling 2, and the motor 3 is installed to the motor fixing frame 4, which can drive the stator assembly to rotate; the stator assembly includes a stator pressure cover 8 and a stator main shaft 14, and a friction force adjustable mechanism is arranged between the stator main shaft 14 and the rotor 9, and the friction force adjustable mechanism includes a No. 1 spring plunger 10, a No. 2 spring plunger 12, a No. 1 plunger mounting plate 7, and a No. 2 plunger mounting plate 13, and when the stator main shaft 14 and the rotor 9 move relative to each other, the mechanism can provide friction force, and the friction force is adjustable.

[0023] The device also includes a No. 1 bearing 5, a No. 2 bearing 17 and a bearing fixing bracket 6, wherein the bearing fixing bracket 6 is a U-shaped structure, and a No. 1 transmission shaft 1 and a No. 2 transmission shaft 16 are respectively installed at both ends of the bearing fixing bracket 6, and the No. 1 transmission shaft 1 is installed to the bearing fixing bracket 6 through the No. 1 bearing 5, and the No. 2 transmission shaft 16 is installed to the bearing fixing bracket 6 through the No. 2 bearing 17.

[0024] After the load drives the rotor 9 to rotate, the starting motor 3 drives the stator assembly to rotate. When the rotation direction of the stator assembly is opposite to that of the rotor 9, the No. 1 spring plunger 10 and the No. 2 spring plunger 12 generate resistance to prevent the rotor 9 from rotating; when the rotation direction of the stator assembly is the same as that of the rotor 9 and the rotation speed is less than that of the rotor 9, the No. 1 spring plunger 10 and the No. 2 spring plunger 12 still generate resistance to prevent the rotor 9 from rotating; when the rotation direction of the stator assembly is the same as that of the rotor 9 and the rotation speed is the same as that of the rotor 9, the resistance generated by the No. 1 spring plunger 10 and the No. 2 spring plunger 12 to the rotor 9 is 0; when the rotation direction of the stator assembly is the same as that of the rotor 9 and the rotation speed is greater than that of the rotor 9, the No. 1 spring plunger 10 and the No. 2 spring plunger 12 generate rotation assistance for the rotor 9, thereby compensating for the interference resistance to the rotation of the rotor 9.

[0025] like Figure 1 As shown, the No. 1 spring plunger 10 is a friction adjustable mechanism. The No. 1 spring plunger 10 and the No. 2 spring plunger 12 are in contact with the rotor 9. By adjusting the pressure of the No. 1 spring plunger 10 and the No. 2 spring plunger 12 on the rotor 9, the friction provided by the No. 1 spring plunger 10 and the No. 2 spring plunger 12 can be adjusted.

[0026] Before working, first adjust the No. 1 spring plunger 10 and the No. 2 spring plunger 12 to prevent them from contacting the rotor 9.

[0027] Working process:

[0028] 1) Open the gas source, and the gas enters the stator main shaft 14 through the gas pipe rotary joint 15, so that an air film is formed between the stator main shaft 14 and the rotor 9.

[0029] 2) When the rope 11 is connected to the load and is working, the rotor 9 is driven to rotate to overcome the air film resistance. At this time, through interference force measurement, it is found that in addition to the air film resistance, interference resistance is generated between the rope 11 and the rotor 9.

[0030] 3) The No. 1 spring plunger 10 and the No. 2 spring plunger 12 are adjusted to generate a certain pressure on the rotor 9. At this time, the pressure generates resistance to prevent the rotor 9 from rotating.

[0031] 4) Start the motor 3, drive the stator gland 8 and the stator main shaft 14 to rotate through the coupling 2 and the No. 1 transmission shaft 1, adjust the rotation direction and speed of the stator main shaft 14, make the stator main shaft 14 rotate in the same direction as the rotor 9, and the speed is greater than the rotor 9, so as to compensate for the system interference force. By measuring the interference force, the compensation value can be obtained.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An interference force compensation type air floating rotating device, characterized in that: The invention comprises an air bearing, a motor (3), a coupling (2), a first transmission shaft (1), a second transmission shaft (16) and a friction-adjustable mechanism. The air bearing comprises a stator assembly and a rotor (9). The rotor (9) is sleeved on the outer side of the stator assembly. The friction-adjustable mechanism is installed on the outer side of the rotor (9). The first transmission shaft (1) and the second transmission shaft (16) are installed at two ends of the stator assembly respectively. The output shaft of the motor (3) is connected to the first transmission shaft (1) through the coupling (2).

2. The interference force compensation type air floating rotating device according to claim 1, characterized in that: The stator assembly comprises a stator cover (8) and a stator main shaft (14), one side of the stator cover (8) is connected to a first transmission shaft (1), and the other side of the stator cover (8) is connected to one end of the stator main shaft (14), the outer side of the stator main shaft (14) is sleeved with a rotor (9), and the other end of the stator main shaft (14) is connected to a second transmission shaft (16).

3. The interference force compensation type air floating rotating device according to claim 1, characterized in that: The friction force adjustable mechanism comprises a No. 1 spring plunger (10), a No. 2 spring plunger (12), a No. 1 plunger mounting plate (7) and a No. 2 plunger mounting plate (13); the No. 1 plunger mounting plate (7) is mounted to the outside of the stator gland (8) and the rotor (9); the No. 2 plunger mounting plate (13) is mounted to the outside of the rotor (9) and the stator main shaft (14); the No. 1 spring plunger (10) and the No. 2 spring plunger (12) are mounted to the rotor (9) via the No. 1 plunger mounting plate (7) and the No. 2 plunger mounting plate (13), respectively.

4. The interference force compensation type air floating rotating device according to claim 1, characterized in that: The invention also comprises a No. 1 bearing (5), a No. 2 bearing (17) and a bearing fixing bracket (6); the bearing fixing bracket (6) is a U-shaped structure; a No. 1 transmission shaft (1) and a No. 2 transmission shaft (16) are respectively mounted on both ends of the bearing fixing bracket (6); the No. 1 transmission shaft (1) is mounted to the bearing fixing bracket (6) via the No. 1 bearing (5); and the No. 2 transmission shaft (16) is mounted to the bearing fixing bracket (6) via the No. 2 bearing (17).

5. The interference force compensation type air floating rotating device according to claim 4, characterized in that: It also includes a motor fixing frame (4), wherein the motor fixing frame (4) is mounted to one side of the bearing fixing bracket (6), and the motor (3) is mounted to the motor fixing frame (4).

6. The interference force compensation type air floating rotating device according to claim 1, characterized in that: It also includes a rope (11), an annular groove is provided on the outer side of the rotor (9), and a load connected to the outside of the rope (11) is arranged in the annular groove, and the load is used to drive the rotor (9) to rotate.

7. The interference force compensation type air floating rotating device according to claim 1, characterized in that: It also includes an air pipe rotating joint (15), one end of which is connected to one end of the second transmission shaft (16), and the other end of which is connected to an external air source.

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