Rotating mechanism for plasma spraying

Abstract

The utility model discloses a rotating mechanism for plasma spraying, which relates to the technical field of plasma spraying and comprises a bearing seat, a hollow rotating seat is connected above the bearing seat through a variable-speed driving component, and a centering clamping component is arranged on the hollow rotating seat. The centering clamping assembly comprises three clamping parts distributed annularly and a self-locking control assembly, and the variable-speed driving assembly comprises a rotating shaft, a motor support, a variable-speed motor, a variable-speed gear, a transmission gear and a variable-frequency speed regulator. The centering and clamping assembly is arranged, three V-shaped positioning blocks draw close to the center, centering and clamping work of circular workpieces of different specifications on the hollow rotating base is facilitated, and adaptability and practicability are improved; and the variable-speed driving assembly is arranged, the rotating speed of the output shaft of the variable-speed motor is adjusted through the variable-frequency speed regulator to achieve adjustment of the rotating speed of the circular workpiece, and then different use requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma spraying, in particular to a rotating mechanism for plasma spraying. Background Art

[0002] Plasma spraying is a technology for strengthening and modifying the surface of materials. It can impart properties such as wear resistance, corrosion resistance, high-temperature oxidation resistance, electrical insulation, heat insulation, radiation protection, friction reduction, and sealing properties to substrate surfaces. Because the outer surface of a circular workpiece is annular, plasma spraying requires it to be placed and clamped on a rotating device beforehand, followed by rotation to ensure spraying efficiency and uniformity.

[0003] However, the clamps on the existing rotating equipment cannot adapt well to the centering and clamping work of circular workpieces of different specifications, which reduces the adaptability and practicality. In addition, the drive on the rotating equipment does not have a speed change function, and thus cannot adjust the rotation speed of the circular workpiece, and cannot meet different usage requirements. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a plasma spraying rotating mechanism.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A plasma spraying rotary mechanism includes a bearing seat, wherein a hollow rotating seat is connected to the upper portion of the bearing seat via a variable speed drive assembly, and a centering clamping assembly is provided on the hollow rotating seat, wherein the centering clamping assembly includes three annularly distributed clamping components and a self-locking control assembly;

[0007] The variable speed drive assembly includes a rotating shaft, a motor bracket welded to the top outer wall of the supporting base, a variable speed motor fixedly mounted on the lower side wall of the top of the motor bracket, a variable speed gear fixedly mounted on the output shaft of the variable speed motor, a transmission gear fixedly mounted on the rotating shaft, and a variable frequency speed regulator fixedly mounted on the front outer wall of the supporting base. In this way, the rotation speed of the circular workpiece is adjusted by adjusting the rotation speed of the output shaft of the variable speed motor through the variable frequency speed regulator, thereby being able to meet different usage requirements.

[0008] The three clamping components all include a slideway opened on the top of the hollow rotating seat, a screw rotatably installed in the slideway, a sliding block threadedly connected to the screw, a V-shaped positioning block fixedly connected to the side wall of the sliding block, and a small bevel gear fixedly mounted on one end of the screw. In this way, the three V-shaped positioning blocks are brought closer to the center, thereby facilitating the centering and clamping of circular workpieces of different specifications on the hollow rotating seat, thereby improving adaptability and practicality.

[0009] As a preferred solution, the top end of the rotating shaft is coaxially welded to the bottom outer wall of the hollow rotating seat, and the bottom end of the rotating shaft is connected to the top center inner wall of the bearing seat through a bearing.

[0010] As a preferred solution, the output shaft of the variable speed motor passes through the motor bracket, the variable frequency speed regulator is electrically connected to the variable speed motor, and the speed gear and the transmission gear are meshed with each other.

[0011] As a preferred solution, a avoidance hole is opened at the top center of the hollow rotating seat, and the three small bevel gears are all located in the avoidance hole.

[0012] As a preferred solution, the self-locking control assembly includes a transmission shaft whose bottom end is connected to the central inner wall of the bottom of the hollow rotating seat through a bearing, a large bevel gear and a worm gear fixedly mounted on the transmission shaft in sequence, a control shaft rotatably installed in the hollow rotating seat, a worm fixedly mounted on the control shaft and meshing with the worm gear, and a handle fixedly connected to the outer wall of one end of the control shaft.

[0013] As a preferred solution, the outer walls of the three sliding blocks are respectively slidably connected to the inner walls of the two slideways, and the three small bevel gears are all meshed with the large bevel gear.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model is provided with a centering and clamping assembly, which is close to the center through three V-shaped positioning blocks, thereby facilitating the centering and clamping of circular workpieces of different specifications on the hollow rotating seat, thereby improving adaptability and practicality;

[0016] 2. A variable speed drive assembly is provided, which adjusts the rotation speed of the circular workpiece by adjusting the speed of the variable speed motor output shaft through the frequency converter, thereby being able to meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a three-dimensional enlarged structural diagram of the variable speed drive assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall front view of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the hollow rotating seat of the utility model after the bottom is cut off;

[0021] Figure 5 This is a schematic diagram of the top view of the hollow rotating seat of the utility model;

[0022] Figure 6 This is a schematic diagram of the parts structure of the centering and clamping assembly of the utility model.

[0023] In the figure: 1. Bearing seat; 2. Hollow rotating seat; 3. Rotating shaft; 4. Motor bracket; 5. Variable speed motor; 6. Variable speed gear; 7. Transmission gear; 8. Frequency converter; 9. Slideway; 10. Lead screw; 11. Sliding block; 12. V-shaped positioning block; 13. Small bevel gear; 14. Avoidance hole; 15. Transmission shaft; 16. Large bevel gear; 17. Worm gear; 18. Control shaft; 19. Worm; 20. Turning handle. DETAILED DESCRIPTION

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

[0025] Example 1, with reference to Figure 1-3 A plasma spraying rotary mechanism includes a supporting base 1, and a hollow rotating base 2 is connected to the upper side of the supporting base 1 through a variable speed drive component. The variable speed drive component includes:

[0026] The top end of the rotating shaft 3 is coaxially welded to the bottom outer wall of the hollow rotating seat 2, and the bottom end of the rotating shaft 3 is connected to the top center inner wall of the bearing seat 1 through a bearing;

[0027] Motor bracket 4, speed-changing motor 5, the motor bracket 4 is welded to the top outer wall of the bearing base 1, the speed-changing motor 5 is fixedly mounted on the top lower side wall of the motor bracket 4, and the output shaft of the speed-changing motor 5 passes through the motor bracket 4;

[0028] The speed change gear 6 and the transmission gear 7 are fixedly mounted on the output shaft of the speed change motor 5 and the transmission gear 7 is fixedly mounted on the rotating shaft 3. The speed change gear 6 and the transmission gear 7 are meshed with each other.

[0029] The variable frequency speed regulator 8 is fixedly mounted on the front outer wall of the supporting base 1 and is electrically connected to the variable speed motor 5;

[0030] During the specific implementation of this embodiment: the speed change gear 6 is driven to rotate by the speed change motor 5, and then the transmission gear 7 engaged with the speed change gear 6 drives the hollow rotating seat 2 connected to the top of the rotating shaft 3 to rotate, thereby enabling the circular workpiece clamped on the hollow rotating seat 2 to rotate to ensure the uniformity and efficiency of the spraying, and the speed of the output shaft of the speed change motor 5 is adjusted by the frequency converter 8 to achieve the adjustment of the rotation speed of the circular workpiece, thereby being able to meet different usage requirements.

[0031] Example 2, reference Figure 1 and Figure 4-6 This embodiment is optimized based on the embodiment 1. Specifically, a centering clamping assembly is provided on the hollow rotating seat 2. The centering clamping assembly includes three annularly distributed clamping parts and a self-locking control assembly.

[0032] In this embodiment, the three clamping components each include a slideway 9 provided on the top of the hollow rotating seat 2, a lead screw 10 rotatably mounted in the slideway 9, a sliding block 11 threadedly connected to the lead screw 10, a V-shaped positioning block 12 fixedly connected to the side wall of the sliding block 11, and a small bevel gear 13 fixedly sleeved on one end of the lead screw 10;

[0033] Furthermore, a relief hole 14 is provided at the top center of the hollow rotating seat 2, and the three small bevel gears 13 are all located in the relief hole 14;

[0034] In this embodiment, the self-locking control assembly includes a transmission shaft 15 whose bottom end is connected to the central inner wall of the bottom of the hollow rotating seat 2 through a bearing, a large bevel gear 16 and a worm gear 17 fixedly mounted on the transmission shaft 15 in sequence, a control shaft 18 rotatably mounted in the hollow rotating seat 2, a worm 19 fixedly mounted on the control shaft 18 and meshing with the worm gear 17, and a handle 20 fixedly connected to the outer wall of one end of the control shaft 18;

[0035] Furthermore, the outer walls of the three sliding blocks 11 are slidably connected to the inner walls of the two slideways 9, and the three small bevel gears 13 are all meshed with the large bevel gear 16;

[0036] During the specific implementation of this embodiment: the worm 19 on the control shaft 18 is driven to rotate by the rotating handle 20, and then the worm wheel 17 engaged with the worm 19 drives the transmission shaft 15 to rotate, and then the transmission shaft 15 drives the large bevel gear 16 to rotate, and then the three small bevel gears 13 engaged with the large bevel gear 16 drive the three lead screws 10 to rotate. Under the limit of the three slideways 9, the three sliding blocks 11 threadedly connected to the three lead screws 10 drive the three V-shaped positioning blocks 12 to move closer to the center, thereby facilitating the centering and clamping of circular workpieces of different specifications on the hollow rotating seat 2, thereby improving adaptability and practicality.

[0037] Working principle: First, the worm 19 on the control shaft 18 is driven to rotate by the turning handle 20, and then the worm wheel 17 engaged with the worm 19 drives the transmission shaft 15 to rotate, and then the transmission shaft 15 drives the large bevel gear 16 to rotate, and then the three small bevel gears 13 engaged with the large bevel gear 16 drive the three lead screws 10 to rotate. Under the limit of the three slideways 9, the three sliding blocks 11 threadedly connected to the three lead screws 10 drive the three V-shaped positioning blocks 12 to move closer to the center, thereby facilitating the centering and clamping of circular workpieces of different specifications on the hollow rotating seat 2, thereby improving adaptability and practicality;

[0038] Secondly, the speed change gear 6 is driven to rotate by the speed change motor 5, and then the transmission gear 7 engaged with the speed change gear 6 drives the hollow rotating seat 2 connected to the top of the rotating shaft 3 to rotate, so that the circular workpiece clamped on the hollow rotating seat 2 can be rotated to ensure the uniformity and efficiency of the spraying, and the speed of the output shaft of the speed change motor 5 is adjusted by the frequency converter 8 to realize the adjustment of the rotation speed of the circular workpiece, so as to meet different usage requirements.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plasma spraying rotating mechanism, comprising a bearing seat (1), characterized in that: The upper portion of the bearing seat (1) is connected to a hollow rotating seat (2) via a variable speed drive assembly, and a centering clamping assembly is provided on the hollow rotating seat (2), and the centering clamping assembly includes three annularly distributed clamping components and a self-locking control assembly; The variable speed drive assembly comprises a rotating shaft (3), a motor bracket (4) welded to the top outer wall of the bearing seat (1), a variable speed motor (5) fixedly mounted on the top lower side wall of the motor bracket (4), a variable speed gear (6) fixedly sleeved on the output shaft of the variable speed motor (5), a transmission gear (7) fixedly sleeved on the rotating shaft (3), and a variable frequency speed regulator (8) fixedly mounted on the front outer wall of the bearing seat (1); The three clamping components each include a slideway (9) opened on the top of the hollow rotating seat (2), a screw (10) rotatably installed in the slideway (9), a sliding block (11) threadedly connected to the screw (10), a V-shaped positioning block (12) fixedly connected to the side wall of the sliding block (11), and a small bevel gear (13) fixedly sleeved on one end of the screw (10).

2. The plasma spraying rotating mechanism according to claim 1, characterized in that: The top end of the rotating shaft (3) is coaxially welded to the bottom outer wall of the hollow rotating seat (2), and the bottom end of the rotating shaft (3) is connected to the top center inner wall of the bearing seat (1) through a bearing.

3. The plasma spraying rotating mechanism according to claim 1, characterized in that: The output shaft of the variable speed motor (5) passes through the motor bracket (4), the variable frequency speed regulator (8) is electrically connected to the variable speed motor (5), and the variable speed gear (6) and the transmission gear (7) are meshed with each other.

4. The plasma spraying rotating mechanism according to claim 1, characterized in that: A relief hole (14) is provided at the top center of the hollow rotating seat (2), and the three small bevel gears (13) are all located in the relief hole (14).

5. The plasma spraying rotating mechanism according to claim 1, characterized in that: The self-locking control assembly comprises a transmission shaft (15) whose bottom end is connected to the central inner wall of the bottom of the hollow rotating seat (2) through a bearing, a large bevel gear (16) and a worm gear (17) fixedly mounted on the transmission shaft (15) in sequence, a control shaft (18) rotatably mounted in the hollow rotating seat (2), a worm (19) fixedly mounted on the control shaft (18) and meshing with the worm gear (17), and a handle (20) fixedly connected to the outer wall of one end of the control shaft (18).

6. The plasma spraying rotating mechanism according to claim 1, characterized in that: The outer walls of the three sliding blocks (11) are respectively slidably connected to the inner walls of the two slideways (9), and the three small bevel gears (13) are all meshed with the large bevel gear (16).

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