A roller swivel mechanism

Abstract

This utility model relates to the field of mechanical equipment technology, specifically disclosing a roller swivel mechanism, including: a main body; and a rotating component, which is disposed on one side of the main body's drive shaft, and the drive shaft of the main body drives the rotating component to rotate; a fixed motor, which is disposed on the top of the main body's placement plate, and the output end of the fixed motor is fixedly connected to a first rotating wheel, and a second rotating wheel is disposed on one side of the first rotating wheel. A transmission belt is fixedly connected to the middle of the first rotating wheel and the second rotating wheel. This utility model achieves real-time and continuous controllability of damping force through the synergistic effect of a magnetorheological damping module and a magnetic adjustment module. Relying on the characteristic of magnetorheological fluid that "the stronger the magnetic field, the greater the shear yield stress", combined with the magnetic controllable design of the ring electromagnet, the damping force adjustment range is adapted to the working conditions of assembling bearings of different specifications and sorting goods of different weights. The potentiometer, combined with the magnetorheological fluid's response speed of <10ms, can achieve micron-level precision adjustment of the damping force.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically a roller swing plate mechanism. Background Technology

[0002] In modern industrial production and precision machinery equipment, roller swivel mechanisms play a crucial role, widely used in fields such as precision bearing assembly, logistics sorting equipment, end effectors of industrial robots, and rotary tables of high-end CNC machine tools. Their core function is to precisely drive the rollers to achieve preset circular motion or angle adjustments, providing a fundamental guarantee for the efficient and precise operation of the equipment.

[0003] The existing roller sway mechanism has difficulty in dynamically and precisely adjusting the damping characteristics of the rollers during the movement process. In actual operation, the load will change constantly with the working conditions. For example, during bearing assembly, different specifications of bearings will have different loads on the rollers. In logistics sorting, goods of different weights will also generate different loads. Therefore, we propose a roller sway mechanism. Utility Model Content

[0004] The purpose of this invention is to provide a roller swivel mechanism to solve the problem mentioned in the background art that the damping characteristics of the roller during the movement process are difficult to dynamically and accurately adjust.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a roller swivel mechanism, comprising: a main body; It also includes: a rotating component, which is located on one side of the main drive shaft, and the main drive shaft drives the rotating component to rotate; A fixed motor is mounted on the top of the main body mounting plate. The output end of the fixed motor is fixedly connected to a first rotating wheel. A second rotating wheel is located on one side of the first rotating wheel. A transmission belt is fixedly connected to the middle of the first and second rotating wheels. A potentiometer is fixedly connected to one side of the second rotating wheel. A ring electromagnet is located on one side of the potentiometer. The fixed motor drives the contacts of the potentiometer to rotate through the first and second rotating wheels, thereby changing the magnetism of the ring electromagnet. The universal joint is located on one side of the main drive shaft. A torque sensor is fixedly connected to one end of the universal joint. The torque sensor is fixedly connected to one side of the rotating part and detects the resistance of the rotating part.

[0006] The bottom of the fixed motor is fixedly connected to a placement ring, which is fixedly connected to the top of the main placement plate.

[0007] One end of the placement ring is fixedly connected to a connecting ring, which is fixedly connected to the surface of the potentiometer. A storage ring is provided at one end of the connecting ring.

[0008] The storage ring consists of an outer ring and an inner ring. The outer ring is fixedly connected to one end of the connecting ring, and the inner ring is fixedly connected to the inside of the outer ring.

[0009] The annular electromagnet is fixedly connected inside the outer ring, and the annular electromagnet is wound around the surface of the inner ring, which is filled with magnetorheological fluid.

[0010] The rotating component includes a rotating rod and a stirring plate. The rotating rod is fixedly connected to one side of the main drive shaft, and the stirring plate is fixedly connected to one side of the surface of the rotating rod. The stirring plate is inserted into the inner ring and comes into contact with the magnetorheological fluid.

[0011] The control center is fixedly connected to the side of the placement ring closest to the fixed motor.

[0012] This utility model has at least the following beneficial effects: This invention achieves real-time and continuous controllability of damping force through the synergistic effect of a magnetorheological damping module and a magnetic adjustment module. Relying on the characteristic of magnetorheological fluid that "the stronger the magnetic field, the greater the shear yield stress", combined with the magnetic controllable design of the ring electromagnet, the damping force adjustment range is adapted to the working conditions of assembling bearings of different specifications and sorting goods of different weights. With the potentiometer and the magnetorheological fluid's response speed of <10ms, the damping force can be adjusted with micron-level precision. This invention achieves status monitoring and intelligent early warning under all operating conditions through the linkage between the torque detection module and the control center. The strain gauge torque sensor can collect the torque signal of the rotating parts in real time (corresponding to the change in damping force) and transmit it to the control center. When the magnetorheological fluid leaks due to sealing aging (leakage amount > 0.1 mL / h), the damping force will drop sharply by 30%. The torque sensor can immediately capture the change in torque from 30 N·m to 21 N·m. The control center will trigger an alarm and cut off the motor power supply within 50 ms to avoid equipment collision caused by uncontrolled roller movement. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional second-view structure of this utility model; Figure 3 This is a schematic diagram of the main cross-sectional structure of this utility model; Figure 4 This is a top view cross-sectional structural diagram of the present invention.

[0014] In the diagram: 1. Main body; 2. Rotating component; 21. Rotating rod; 22. Stirring plate; 3. Fixed motor; 4. First rotating wheel; 5. Second rotating wheel; 6. Transmission belt; 7. Potentiometer; 8. Ring electromagnet; 9. Universal joint; 10. Torque sensor; 11. Placement ring; 12. Connecting ring; 13. Storage ring; 131. Outer ring; 132. Inner ring; 14. Magnetorheological fluid; 15. Control center. Detailed Implementation

[0015] 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.

[0016] Example 1 Please see Figures 1 to 4 This utility model provides a technical solution: a roller swivel mechanism, comprising: a main body 1; It also includes: a rotating component 2, which is disposed on one side of the drive shaft of the main body 1, and the drive shaft of the main body 1 drives the rotating component 2 to rotate; A fixed motor 3 is mounted on the top of the main body 1 placement plate. The output end of the fixed motor 3 is fixedly connected to a first rotating wheel 4. A second rotating wheel 5 is mounted on one side of the first rotating wheel 4. A transmission belt 6 is fixedly connected to the middle of the first rotating wheel 4 and the second rotating wheel 5. A potentiometer 7 is fixedly connected to one side of the second rotating wheel 5. A ring electromagnet 8 is mounted on one side of the potentiometer 7. The fixed motor 3 drives the contacts of the potentiometer 7 to rotate through the first rotating wheel 4 and the second rotating wheel 5, thereby changing the magnetism of the ring electromagnet 8. Universal joint 9 is located on one side of the drive shaft of the main body 1. A torque sensor 10 is fixedly connected to one end of the universal joint 9. The torque sensor 10 is fixedly connected to one side of the rotating part 2 and detects the resistance value of the rotating part 2.

[0017] The magnetic adjustment module, through the coordinated action of "motor-transmission-potentiometer 7-electromagnet," changes the magnetic strength of the ring electromagnet 8, thereby controlling the shear yield stress of the magnetorheological fluid 14. The structure is as follows: The fixed motor 3 uses a micro servo motor or stepper motor (such as a 42-stepper motor), which has the characteristics of adjustable speed and stable output torque. As the power source for magnetic adjustment, it transmits rotational power through the first rotating wheel 4 at the output end, driving the contacts of the potentiometer 7 to rotate. The speed is adjusted by the control center 15 to achieve precise and continuous adjustment of the resistance of the potentiometer 7. The bottom is fixed to the placement ring 11 by bolts. The first rotating wheel 4 is interference-fitted with the output shaft of the fixed motor 3, and the second rotating wheel 5 is fixedly connected to the adjustment shaft (contact shaft) of the potentiometer 7. Both are synchronous pulleys, and the transmission belt 6 is a synchronous belt (to avoid slippage and ensure stable transmission ratio, according to the adjustment range of the potentiometer 7). The design of the rotor diameter ratio ensures that the rotational motion of the fixed motor 3 is smoothly transmitted to the potentiometer 7, avoiding shaft vibration or overload damage caused by direct connection of the motor to the potentiometer 7. The potentiometer 7 has the characteristics of wide resistance adjustment range (e.g., 0-10kΩ) and high resolution (±0.1%). By rotating the contacts, it changes the resistance value of its circuit, thereby adjusting the excitation current of the ring electromagnet 8 (the potentiometer 7 and the ring electromagnet 8 are connected in series in the excitation circuit, and the change in resistance → change in current → change in magnetism). For example, when the resistance of the potentiometer 7 increases from 0Ω to 10kΩ, the excitation current decreases from 1A to 0.1A, and the magnetism of the ring electromagnet 8 decreases accordingly; conversely, the magnetism increases. The magnetorheological damping module utilizes the property of the magnetorheological fluid 14 that "the stronger the magnetic field, the greater the shear yield stress" to provide a controllable damping force for the rotating component 2. The structure is as follows: The storage ring 13 serves as a storage container for the magnetorheological fluid 14 and also provides installation space for the annular electromagnet 8, ensuring a uniform distance between the magnetorheological fluid 14 and the annular electromagnet 8 (air gap ≤ 0.5 mm) to avoid damping force fluctuations caused by uneven magnetic field distribution. The annular electromagnet 8 is a toroidal coil made of enameled copper wire (such as 0.5 mm enameled wire) wound on the surface of the inner ring 132. The two ends of the coil are connected in series with the potentiometer 7 and the external power supply to form an excitation circuit. After the annular electromagnet 8 is energized, it generates a toroidal magnetic field along the radial direction of the inner ring 132. The magnetic field strength varies with the excitation current (the larger the current, the stronger the magnetic field). The magnetic field acts within the inner ring 132. The magnetorheological fluid 14 causes the ferromagnetic particles in the magnetorheological fluid 14 to arrange themselves into a chain-like structure along the magnetic field lines, which significantly increases its shear yield stress and thus increases the damping force when the stirring plate 22 rotates. The inner ring 132 is made of soft iron, which can enhance the magnetic field concentration effect (reduce magnetic field leakage) and increase the magnetic field strength in the area where the magnetorheological fluid 14 is located by 30%-50%, thereby improving the damping adjustment sensitivity. In addition to serving as the winding carrier of the ring electromagnet 8, it also plays the role of "magnetic circuit conduction", so that the magnetic field generated by the ring electromagnet 8 is concentrated on the magnetorheological fluid 14 inside the inner ring 132, avoiding energy loss caused by the outward diffusion of the magnetic field. The torque detection module is used to detect the rotational torque of rotating component 2 in real time (indirectly reflecting the magnitude of the damping force), providing a feedback signal for magnetic adjustment. Its structure is as follows: Universal joint 9 is a cross-type universal joint 9, which has angular compensation capability (allowing ±5° axial deviation). It serves as the "connector" between the drive shaft of the main body 1 and the torque sensor 10, eliminating axial deviation between the drive shaft of the main body 1 and the rotating part 2 (such as misalignment caused by installation errors or operating vibrations), avoiding detection errors caused by deviations transmitted to the torque sensor 10, and ensuring torque detection accuracy. The torque sensor 10 is a strain gauge type torque sensor 10 (such as a static torque sensor 10, with an accuracy of ±0.5%FS). One end is fixed to the universal joint 9 through a flange, and the other end is connected to the rotating rod 21 of the rotating part 2 through bolts, collecting data on the rotation of the rotating part 2 in real time. The torque signal (the magnitude of the torque is positively correlated with the damping force of the magnetorheological fluid 14; the greater the damping force, the greater the torque) is converted into an electrical signal (such as a 4-20mA analog signal) and output. The detection data is transmitted to the control center 15 via a signal cable, providing a basis for the adjustment of the potentiometer 7 of the fixed motor 3 (if the detected torque is too large, the control center 15 instructs the fixed motor 3 to reduce the resistance of the potentiometer 7 → increase the excitation current → enhance the magnetism → increase the damping force, and vice versa). When the detected torque exceeds the preset threshold (such as a sudden drop in torque due to leakage of the magnetorheological fluid 14, or a sudden increase in torque due to jamming of the agitator 22), an alarm signal can be triggered to improve the safety of the mechanism.

[0018] A placement ring 11 is fixedly connected to the bottom of the fixed motor 3, and the placement ring 11 is fixedly connected to the top of the placement plate of the main body 1.

[0019] The placement ring 11 is welded or bolted to the top of the placement plate of the main body 1 to ensure that the motor axis is parallel to the center line connecting the first rotating wheel 4 and the second rotating wheel 5, and to prevent the transmission belt 6 from slipping.

[0020] One end of the placement ring 11 is fixedly connected to a connecting ring 12, which is fixedly connected to the surface of the potentiometer 7. A storage ring 13 is provided at one end of the connecting ring 12.

[0021] Potentiometer 7 is fixed to connecting ring 12 by bolts. One end of connecting ring 12 is welded to placement ring 11, and the other end is fixedly connected to storage ring 13 to ensure that the adjustment shaft of potentiometer 7 is coaxial with the second rotating wheel 5 and to avoid transmission jamming. Placement ring 11 is a ring-shaped metal bracket (material such as aluminum alloy). In addition to fixing motor 3, it also positions potentiometer 7 and storage ring 13 through connecting ring 12 to ensure the coaxiality of potentiometer 7, ring electromagnet 8 and storage ring 13 (error ≤ 0.1mm) and to prevent leakage of magnetorheological fluid 14 or jamming of stirring plate 22. Connecting ring 12 plays the role of "transition support + position calibration" and facilitates quick disassembly and assembly of components during later maintenance.

[0022] The storage ring 13 includes an outer ring 131 and an inner ring 132. The outer ring 131 is fixedly connected to one end of the connecting ring 12, and the inner ring 132 is fixedly connected to the inside of the outer ring 131.

[0023] Both the outer ring 131 and the inner ring 132 are metal ring structures (the outer ring 131 is made of stainless steel, which is corrosion resistant; the inner ring 132 is made of soft iron, which is easily magnetized). The outer ring 131 is bolted to the connecting ring 12, and the inner ring 132 is fixed inside the outer ring 131 by interference fit, forming a closed "ring chamber".

[0024] The annular electromagnet 8 is fixedly connected inside the outer ring 131, and the annular electromagnet 8 is wound around the surface of the inner ring 132, the interior of the inner ring 132 is filled with magnetorheological fluid 14.

[0025] The magnetorheological fluid 14 is a carbonyl iron powder-based magnetorheological fluid 14 (such as carbonyl iron powder dispersed in silicone oil with a mass fraction of 30%-50%), which has the characteristics of fast response speed (<10ms) and wide shear yield stress range (0-100kPa).

[0026] The rotating component 2 includes a rotating rod 21 and a stirring plate 22. The rotating rod 21 is fixedly connected to one side of the drive shaft of the main body 1, and the stirring plate 22 is fixedly connected to one side of the surface of the rotating rod 21. The stirring plate 22 is inserted into the inner ring 132 and contacts the magnetorheological fluid 14.

[0027] One end of the rotating rod 21 is fixed to the drive shaft of the main body 1 by a key connection or flange. The stirring plate 22 is a rectangular or arc-shaped metal plate, which is fixed radially along the rotating rod 21 (at least 3 sets, symmetrically distributed). The rotating rod 21 receives the rotational power of the drive shaft of the main body 1 and drives the stirring plate 22 to rotate synchronously. The stirring plate 22 is inserted into the magnetorheological fluid 14 of the inner ring 132. When rotating, it generates a shearing action with the magnetorheological fluid 14. The rotational resistance of the rotating part 2 is adjusted by the damping force of the magnetorheological fluid 14 to achieve smooth control during movement. When the stirring plate 22 rotates, the magnetorheological fluid 14 provides damping force to the rotating part 2 through viscous friction and particle chain shearing. The magnitude of the damping force changes synchronously with the magnetism of the annular electromagnet 8 to achieve smooth rotation or precise positioning of the rotating part 2.

[0028] Example 2 In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that a control center 15 is fixedly connected to the inside of the placement ring 11 on the side near the fixed motor 3.

[0029] The control center 15 is connected to the torque sensor 10 (receiving torque detection signals), the fixed motor 3 (outputting speed control signals), and the ring electromagnet 8 (monitoring excitation current) via signal cables. It can also be connected to an external host computer (such as an industrial touchscreen for parameter setting and status display). The control center filters and amplifies the detection signal from the torque sensor 10, calculates the torque value corresponding to the current damping force, and compares it with the preset target torque range. When the actual torque exceeds the target range, it automatically generates control commands: if the torque is too high (insufficient damping force), the fixed motor 3 is instructed to rotate forward → the resistance of the potentiometer 7 decreases → the excitation current increases → the magnetism of the ring electromagnet 8 strengthens → the damping force of the magnetorheological fluid 14 increases → the torque drops to the target range; conversely, the control center adjusts in the opposite direction. It records data such as torque, current, and speed during the mechanism's operation, facilitating troubleshooting during later maintenance or optimizing damping adjustment parameters through data analysis.

Claims

1. A roller tilting plate mechanism, comprising: main body; Its characteristic is that it further includes a rotating component, which is disposed on one side of the main body's drive shaft, and the drive shaft of the main body drives the rotating component to rotate; A fixed motor is mounted on the top of the main body placement plate. A first rotating wheel is fixedly connected to the output end of the fixed motor. A second rotating wheel is provided on one side of the first rotating wheel. A transmission belt is fixedly connected to the middle of the first rotating wheel and the second rotating wheel. A potentiometer is fixedly connected to one side of the second rotating wheel. A ring electromagnet is provided on one side of the potentiometer. The fixed motor drives the contacts of the potentiometer to rotate through the first rotating wheel and the second rotating wheel, thereby changing the magnetism of the ring electromagnet. A universal joint is disposed on one side of the main drive shaft. A torque sensor is fixedly connected to one end of the universal joint. The torque sensor is fixedly connected to one side of the rotating component and detects the resistance of the rotating component.

2. The roller oscillating disc mechanism according to claim 1, characterized in that: The bottom of the fixed motor is fixedly connected to a placement ring, which is fixedly connected to the top of the main placement plate.

3. The roller oscillating disc mechanism according to claim 2, characterized in that: One end of the placement ring is fixedly connected to a connecting ring, which is fixedly connected to the surface of the potentiometer. One end of the connecting ring is provided with a storage ring.

4. The roller oscillating mechanism according to claim 3, characterized in that: The storage ring includes an outer ring and an inner ring. The outer ring is fixedly connected to one end of the connecting ring, and the inner ring is fixedly connected to the inside of the outer ring.

5. The roller oscillating mechanism according to claim 4, characterized in that: The annular electromagnet is fixedly connected inside the outer ring, and the annular electromagnet is wound around the surface of the inner ring, the interior of which is filled with magnetorheological fluid.

6. The roller oscillating mechanism according to claim 4, characterized in that: The rotating component includes a rotating rod and a stirring plate. The rotating rod is fixedly connected to one side of the main drive shaft, and the stirring plate is fixedly connected to one side of the surface of the rotating rod. The stirring plate is inserted into the inner ring and contacts the magnetorheological fluid.

7. The roller oscillating disc mechanism according to claim 2, characterized in that: The control center is fixedly connected to the inside of the placement ring, near the fixed motor.

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