Adjustable motor fan cover paint spraying frame

Abstract

The utility model discloses an adjustable motor fan cover paint spraying frame belongs to motor fan cover paint spraying frame field, including support, the top end of support is sleeved with rotating component, and the bottom plate component is welded at the bottom end of support, through the cooperation of above -mentioned each device, the closed -loop control loop of drive motor and PID controller, the travel sensing control of combination pedal switch, so that the operator can through foot pressure stepless regulation U type board's rotation speed, accurate matching different paint spraying condition to the demand of rotation speed, the occlusion design of the conical block of extrusion block bottom surface and the rubber block with antiskid line, generates bidirectional pressure when the bolt is screwed, ensures that the fan cover does not occur axial displacement in high -speed rotation, the cooperation of the limiting rod in the process of rotating forms dynamic protection barrier. The whole structure passes through the synergistic effect of multidimensional adjustment function, solved the technical bottleneck that traditional paint spraying frame can not realize the rotation speed closed loop control and safety protection.

Description

Technical Field

[0001] This utility model relates to the technical field of motor fan cover spray painting rack, specifically an adjustable motor fan cover spray painting rack. Background Technology

[0002] When a generator rotates to generate electricity, it produces a large amount of heat. Cool air must pass between the stator and rotor, so there are fan blades at one end of the generator. The high-speed fan blades blow cooling air out, and a mesh-like net (mostly circular and closed) must be placed around it, which is the generator shroud. This shroud protects the fan blades from objects falling on them. During operation, to extend its lifespan and improve its appearance, the generator shroud is painted to prevent rapid aging and enhance its aesthetics.

[0003] An investigation revealed that a Chinese utility model patent discloses an adjustable motor fan cover spray painting rack (publication number: CN216296771U), comprising a worktable, a guide rail on the worktable, a limiting clamp on the guide rail, a slider on one side of the limiting clamp, a motor fan cover fixing seat on the slider, support legs at the four corners of the worktable, a motor fixing plate between the support legs, and a motor on the motor fixing plate. The beneficial effects of this utility model are: it can efficiently perform motor fan cover spray painting work, eliminating the need for a large amount of manpower, significantly improving efficiency, and the clamping adjustment can be made according to the size of the motor fan cover, making it highly applicable.

[0004] Although the aforementioned patent allows for clamping different motor covers using a limiting clamp, it cannot control the automatic rotation of the motor cover during painting to facilitate user painting. Furthermore, it cannot flexibly adjust the rotation speed of the motor cover, nor can it adjust the rotation speed according to the actual painting situation of each surface to achieve a uniform painting effect; it also cannot achieve closed-loop control of rotation speed and safety protection.

[0005] Therefore, this utility model provides an adjustable motor fan cover spray painting frame to solve the above problems. Utility Model Content

[0006] This utility model provides an adjustable motor fan cover spray painting frame, which aims to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A bracket is included, with a rotating assembly sleeved at the top of the bracket. The rotating assembly includes an extension plate horizontally sleeved at the top of the bracket. A drive motor is fixedly connected to the top right end of the extension plate. The output end of the drive motor passes downward through the extension plate and is coaxially fixedly connected to a connecting rod. A U-shaped plate with a horizontal opening to the right is fixedly connected to the bottom end of the connecting rod. A threaded hole is provided in the center of the top surface of the U-shaped plate. A vertically arranged bolt is threaded into the threaded hole. An extrusion block is fixedly connected to the bottom end of the bolt. An array of conical blocks is provided on the bottom surface of the extrusion block. A groove corresponding to the position of the conical blocks is provided on the inner bottom wall of the U-shaped plate. A rubber block is adhered and fixed in the groove. A protective cover is rotatably sleeved on the middle of the connecting rod. A horizontally extending limiting rod is welded to the back of the protective cover. The limiting rod is slidably sleeved on the middle section of the bracket.

[0008] The bottom end of the bracket is welded with a base plate assembly, which includes a base plate that is fixed perpendicularly to the bottom end of the bracket. The bottom surface of the base plate has a recessed equipment groove, in which a PID controller is fixedly installed. A sealing plate is fixed to the bottom of the equipment groove by screws. A wire trough plate is fixed to the right side of the base plate, and a pedal switch connected to the PID controller signal is embedded at the right end of the wire trough plate.

[0009] As a preferred technical solution of this application, the U-shaped plate is configured with a right-opening structure, and the threaded hole is arranged along the central axis of the top surface of the U-shaped plate and coaxially aligned with the moving trajectory of the extrusion block.

[0010] As a preferred technical solution of this application, the tip of the conical block on the bottom surface of the extrusion block is positioned facing the surface of the rubber block, and the rubber block is made of an elastic material with anti-slip texture on the surface.

[0011] As a preferred technical solution of this application, the protective cover is a semi-circular cover with an opening to the right, and its top is rotatably connected to the connecting rod through a rolling bearing. The bottom edge of the protective cover maintains a safe distance from the rotation trajectory of the U-shaped plate.

[0012] As a preferred technical solution of this application, the travel sensor of the pedal switch is connected to the analog input terminal of the PID controller through a shielded cable, the power line of the drive motor is run through a pre-set wiring channel inside the wire trough plate, and the output terminal of the PID controller and the frequency converter of the drive motor form a closed-loop control circuit.

[0013] As a preferred technical solution of this application, a thermally conductive buffer layer is provided between the PID controller and the sealing plate, and the surface of the sealing plate is provided with an airflow channel corresponding to the heat dissipation structure of the PID controller.

[0014] The beneficial effects of this utility model are as follows: By setting a linkage structure between the rotating component and the base plate component, the integrated operation of the motor fan cover clamping, rotation, and speed adjustment functions is realized. Specifically, the closed-loop control circuit formed by the drive motor and the PID controller, combined with the travel sensor control of the pedal switch, allows the operator to steplessly adjust the rotation speed of the U-shaped plate by foot pressure, precisely matching the speed requirements of different painting conditions; the interlocking design of the conical block on the bottom surface of the extrusion block and the anti-slip rubber block generates bidirectional clamping force when the bolts are tightened, ensuring that the fan cover does not undergo axial displacement during high-speed rotation; the protective cover, through the cooperation of the limit rod, forms a dynamic protective barrier during rotation, and its bottom safety distance design effectively avoids mechanical interference with the U-shaped plate. The overall structure, through the synergistic effect of multi-dimensional adjustment functions, solves the technical bottleneck of traditional paint spraying racks being unable to achieve closed-loop control of rotation speed and safety protection. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of an adjustable motor fan spray gun frame;

[0016] Figure 2 This is a schematic diagram of the rotating component in an adjustable motor fan spray gun;

[0017] Figure 3 This is a schematic diagram of the structure of the bottom plate assembly in an adjustable motor fan hood paint spraying rack;

[0018] Figure 4 This is a schematic diagram showing the disassembled structure of an adjustable motor fan cover spray painting frame.

[0019] In the picture:

[0020] 1. Bracket; 2. Rotating assembly; 21. Extension plate; 22. Drive motor; 23. Connecting rod; 24. U-shaped plate; 25. Bolt; 26. Extrusion block; 27. Conical block; 28. Rubber block; 29. ​​Protective cover; 3. Limiting rod; 4. Base plate assembly; 41. Base plate; 43. PID controller; 44. Sealing plate; 45. Cable tray plate; 46. Pedal switch. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides an adjustable motor fan cover spray painting frame, such as Figure 1-4As shown, the adjustable motor fan spray painting frame includes a bracket 1. A rotating component 2 is sleeved on the top of the bracket 1. The rotating component 2 includes an extension plate 21 that is horizontally sleeved on the top of the bracket 1. A drive motor 22 is fixedly connected to the top surface of the right end of the extension plate 21. The output end of the drive motor 22 passes through the extension plate 21 downward and is coaxially fixedly connected to a connecting rod 23. A U-shaped plate 24 with a horizontal opening to the right is fixedly connected to the bottom end of the connecting rod 23. A threaded hole is opened in the center of the top surface of the U-shaped plate 24. A vertically arranged bolt 25 is threaded into the threaded hole. An extrusion block 26 is fixedly connected to the bottom end of the bolt 25. An array of conical blocks 27 are arranged on the bottom surface of the extrusion block 26. A groove corresponding to the position of the conical block 27 is opened in the inner bottom wall of the U-shaped plate 24. A rubber block 28 is glued and fixed in the groove. A protective cover 29 is rotatably sleeved on the middle of the connecting rod 23. A horizontally extending limiting rod 3 is welded to the back of the protective cover 29. The limiting rod 3 is slidably sleeved on the middle section of the bracket 1.

[0023] A base plate assembly 4 is welded to the bottom of the bracket 1. The base plate assembly 4 includes a base plate 41 that is fixed vertically to the bottom of the bracket 1. A recessed equipment groove is opened on the bottom surface of the base plate 41. A PID controller 43 is fixedly installed in the equipment groove. A sealing plate 44 is fixed to the bottom of the equipment groove by screws. A wire trough plate 45 is fixed to the right side of the base plate 41. A pedal switch 46 that is connected to the PID controller 43 is embedded at the right end of the wire trough plate 45.

[0024] Through the rigid coaxial connection between the output shaft of the drive motor 22 and the connecting rod 23, combined with the closed-loop control circuit formed by the PID controller 43 and the pedal switch 46, the stroke signal of the pedal switch 46 can be accurately converted into the speed gradient adjustment of the U-shaped plate 24, realizing the dynamic matching of the rotation speed during the painting process; the conical block 27 on the bottom surface of the extrusion block 26 is engaged with the anti-slip texture of the rubber block 28 to ensure that the fan cover does not undergo axial displacement during rotation; the protective cover 29 is connected to the bracket 1 through the sleeve joint of the limit rod 3, and its top is rotatably connected to the rolling bearing of the connecting rod 23, forming a dynamic isolation barrier and creating a paint mist protection zone between the rotating parts and the fixed bracket; through the multi-dimensional coordination of mechanical transmission and electrical control, the various connections construct an adjustable painting closed-loop operation system.

[0025] The U-shaped plate 24 is configured to open to the right, and the threaded hole is set along the central axis of the top surface of the U-shaped plate 24 and is coaxially aligned with the moving trajectory of the extrusion block 26.

[0026] By aligning the opening direction of the U-shaped plate 24 with the extension direction of the extension plate 21, and by axially aligning the threaded hole with the moving trajectory of the extrusion block 26, the vertical pressure generated when the bolt 25 is tightened is precisely transmitted along the symmetrical axis of the U-shaped plate 24, eliminating the bending deformation of the connecting rod 23 caused by off-center load, and ensuring uniform pressure distribution on the contact surface between the conical block 27 and the rubber block 28.

[0027] The pointed end of the conical block 27 on the bottom surface of the extrusion block 26 faces the surface of the rubber block 28, which is made of an elastic material with anti-slip texture on the surface.

[0028] By utilizing the engagement mechanism between the tip of the conical block 27 and the anti-slip rubber block 28, a vector superposition of radial expansion force and axial friction force is generated during the pressing of the bolt 25, which increases the static friction force of workpiece clamping compared to traditional planar clamping and effectively suppresses centrifugal displacement during high-speed rotation.

[0029] The protective cover 29 is a semi-circular cover that opens to the right. Its top is rotatably connected to the connecting rod 23 via a rolling bearing. The bottom edge of the protective cover 29 maintains a safe distance from the rotation trajectory of the U-shaped plate 24.

[0030] Through the dynamic and static connection design of the rolling bearing at the top of the protective cover 29 and the limit rod 3, a paint mist protection zone is formed between the rotating component and the fixed bracket.

[0031] The travel sensor of the pedal switch 46 is connected to the analog input terminal of the PID controller 43 through a shielded cable. The power line of the drive motor 22 is run through the preset wiring channel inside the wire trough plate 45. The output terminal of the PID controller 43 and the frequency converter of the drive motor 22 form a closed-loop control circuit.

[0032] A closed-loop signal link between a PID controller 43 and a pedal switch 46 is adopted. The pedal travel is converted into a PWM speed control command for the drive motor 22 through the current signal. Combined with the layered shielded high-voltage / low-voltage isolation wiring in the slotted board 45, the speed control accuracy is improved.

[0033] A heat-conducting buffer layer is provided between the PID controller 43 and the cover plate 44, and an airflow channel corresponding to the heat dissipation structure of the PID controller 43 is provided on the surface of the cover plate 44.

[0034] The PID controller 43 maintains its operating temperature through a composite heat dissipation structure of phase change material in the thermally conductive buffer layer and honeycomb airflow channels in the sealing plate 44.

[0035] Working principle:

[0036] The motor fan cover to be painted is placed horizontally inside the right-opening U-shaped plate 24. The pressing block 26 is driven to move downward by rotating the bolt 25 located on the central axis of the top surface of the U-shaped plate 24. The conical blocks 27 distributed in an array on the bottom surface of the pressing block 26 and the anti-slip textured rubber blocks 28 bonded to the grooves on the inner bottom wall of the U-shaped plate 24 work together to form a three-point clamping structure. The clamping force is adaptively adjusted by the engagement between the tip of the conical block 27 and the surface of the rubber block 28. After starting the device, the operator steps on the FSR402 type pedal embedded at the right end of the groove plate 45. The board switch 46, with its built-in travel sensor, transmits the pressure signal through a shielded cable to the PID-2000 PID controller 43 installed in the equipment slot. After processing by the closed-loop algorithm, it outputs a PWM speed regulation signal to the drive motor 22, which drives the 57BYG250C stepper motor to run continuously variable speed, thereby rotating the coaxially connected connecting rod 23 and U-shaped plate 24. After the painting operation is completed, the reverse rotation bolt 25 releases the engagement of the conical block 27 on the workpiece, and the motor fan cover with the completed surface treatment can be quickly removed.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable motor fan hood spray painting frame, comprising a support frame (1), characterized in that: A rotating assembly (2) is sleeved on the top of the bracket (1). The rotating assembly (2) includes an extension plate (21) horizontally sleeved on the top of the bracket (1). A drive motor (22) is fixedly connected to the top surface of the right end of the extension plate (21). The output end of the drive motor (22) passes downward through the extension plate (21) and is coaxially fixedly connected to a connecting rod (23). A U-shaped plate (24) with a horizontal opening to the right is fixedly connected to the bottom end of the connecting rod (23). A threaded hole is provided in the center of the top surface of the U-shaped plate (24), and a threaded connection is made inside the threaded hole. A vertically arranged bolt (25) is fixedly connected to the bottom end of the bolt (25). An array of conical blocks (27) is provided on the bottom surface of the conical block (26). A groove corresponding to the position of the conical block (27) is opened on the inner bottom wall of the U-shaped plate (24). A rubber block (28) is bonded and fixed in the groove. A protective cover (29) is rotatably sleeved in the middle of the connecting rod (23). A horizontally extending limiting rod (3) is welded to the back of the protective cover (29). The limiting rod (3) is slidably sleeved in the middle section of the bracket (1). The bottom end of the bracket (1) is welded with a base plate assembly (4). The base plate assembly (4) includes a base plate (41) that is fixed vertically to the bottom end of the bracket (1). The bottom surface of the base plate (41) is provided with a recessed equipment groove. A PID controller (43) is fixedly installed in the equipment groove. A sealing plate (44) is fixed to the bottom of the equipment groove by screws. A wire groove plate (45) is fixed to the right side of the base plate (41). A pedal switch (46) that is connected to the signal of the PID controller (43) is embedded at the right end of the wire groove plate (45).

2. The adjustable motor fan cover spray painting frame according to claim 1, characterized in that: The U-shaped plate (24) is configured to open to the right, and the threaded hole is set along the central axis of the top surface of the U-shaped plate (24) and is coaxially aligned with the moving trajectory of the extrusion block (26).

3. The adjustable motor fan cover spray painting frame according to claim 1, characterized in that: The cone-shaped block (27) on the bottom surface of the extrusion block (26) is positioned with its tip facing the surface of the rubber block (28), which is made of an elastic material with anti-slip texture on its surface.

4. The adjustable motor fan cover spray painting frame according to claim 1, characterized in that: The protective cover (29) is a semi-circular cover with an opening to the right. Its top is rotatably connected to the connecting rod (23) via a rolling bearing. The bottom edge of the protective cover (29) maintains a safe distance from the rotation trajectory of the U-shaped plate (24).

5. The adjustable motor fan cover spray painting frame according to claim 1, characterized in that: The travel sensor of the pedal switch (46) is connected to the analog input terminal of the PID controller (43) through a shielded cable. The power line of the drive motor (22) is run through the pre-set wiring channel inside the wire trough plate (45). The output terminal of the PID controller (43) and the frequency converter of the drive motor (22) form a closed-loop control circuit.

6. The adjustable motor fan cover spray painting frame according to claim 1, characterized in that: A thermally conductive buffer layer is provided between the PID controller (43) and the cover plate (44), and an airflow channel corresponding to the heat dissipation structure of the PID controller (43) is provided on the surface of the cover plate (44).

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