Rotating device and teaching evaluation device

Abstract

The utility model discloses a rotating device and a teaching evaluation device. The rotating device comprises a rotating arm, a connecting assembly and a driving assembly. The connecting assembly comprises a gear rotation fixing shaft, a driven gear and a damping component, the driven gear is rotationally connected with the gear rotation fixing shaft, and the damping component is fixedly connected with the gear rotation fixing shaft. When the rotating arm is pressed by external force, slippage is generated between the damping component and the driven gear, the damping component idles, the driven gear is prevented from rotating, and the driving assembly is prevented from being damaged by suddenly accelerated rotation. According to the rotating device, the stability is guaranteed, meanwhile, the safety and durability are improved, and the service life is remarkably prolonged. The teaching evaluation device comprises two rotating devices, a display screen, a screen, a lifting assembly and a box frame set, a plurality of cameras on the two rotating devices comprehensively capture test paper details and an examination room panorama, all-directional and dead-corner-free real-time monitoring is achieved, and evaluation fairness and accuracy are improved.

Description

Technical Field

[0001] This application relates to the field of teaching aids technology, and in particular to a rotating device and a teaching assessment device. Background Technology

[0002] With the rapid development of my country's education system, the continuous expansion of educational examinations, and the ongoing advancement of educational informatization, schools, research institutions, and other educational organizations have an increasing demand for recording, evaluating, and providing feedback on the teaching process. Traditional teaching assessment methods primarily rely on manual observation and paper records, which suffer from low efficiency, strong subjectivity, and difficulty in traceability. In recent years, with the widespread adoption of video surveillance technology, using cameras to record teaching and examination processes has become a trend. However, existing teaching assessment devices still have many limitations, such as a single monitoring perspective that cannot fully cover the examination room or teaching area. Furthermore, in practical applications in schools, the equipment is often damaged by students' mischievous handling, leading to increased maintenance costs, shortened equipment lifespan, and affecting long-term stable operation. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. This application provides a rotating device that can prevent damage from external forces by using a rotating arm that can prevent damage to the drive components, thereby increasing the service life of the rotating device.

[0004] This application also proposes a teaching assessment device having the above-mentioned rotating device.

[0005] The rotating device according to an embodiment of this application includes:

[0006] Rotating arm;

[0007] A connecting assembly, comprising a gear rotating fixed shaft, a driven gear, and a damping component, wherein the gear rotating fixed shaft is fixedly connected to the rotating arm;

[0008] A drive assembly connected to the driven gear;

[0009] The driven gear is mounted on the gear rotating fixed shaft, and the damping component is fixedly installed on the gear rotating fixed shaft. The damping component rotates synchronously with the gear rotating fixed shaft and abuts against the driven gear.

[0010] The rotating device according to the embodiments of this application has at least the following beneficial effects:

[0011] The rotating device of this application includes a rotating arm, a connecting assembly, and a driving assembly. The rotating arm is connected to the driving assembly via the connecting assembly, and the driving assembly drives the rotating arm to rotate via the connecting assembly. The connecting assembly includes a gear rotating fixed shaft, a driven gear, and a damping component. The gear rotating fixed shaft is fixedly connected to the rotating arm, the driven gear is mounted on the gear rotating fixed shaft, and the gear rotating fixed shaft can rotate relative to the driven gear. The damping component is fixedly mounted on the gear rotating fixed shaft and rotates synchronously with the gear rotating fixed shaft. The damping component abuts against the driven gear, and the transmission between the damping component and the driven gear is a surface friction transmission. When the driving assembly is activated, it drives the driven gear to rotate. The driven gear drives the damping component to rotate through the surface friction between itself and the damping component. The damping component rotates synchronously with the gear rotating fixed shaft, and the gear rotating fixed shaft rotates synchronously with the rotating arm, thereby initiating the rotation of the rotating device. When the rotating device is in the open state, the drive assembly is locked, locking the driven gear. When the rotating arm is swung by external force, the fixed shaft of the gear rotates synchronously with the damping component. The torque of the damping component is greater than the surface friction torque between the driven gear and the damping component, causing the damping component to slip relative to the driven gear. This prevents the damping component from driving the driven gear and thus preventing damage to the drive assembly from the driven gear's rotation. Through the surface friction transmission design between the driven gear and the damping component, the rotating device ensures smooth and stable opening and closing of the rotating arm during normal use. When the rotating device is open, if the rotating arm is pressed by external force, the damping component will slip and spin relative to the driven gear, effectively buffering the impact force and preventing damage to the drive assembly from the sudden acceleration of the driven gear's rotation. This not only improves the stability and safety of the rotating device but also significantly extends its service life.

[0012] According to some embodiments of this application, it further includes a main frame and a sensing device, the sensing device including a sensor assembly and a sensing component, the sensing component being disposed on the gear rotation fixed shaft, the sensor assembly being disposed within the main frame, the driving assembly being disposed within the main frame, and the rotating arm being rotatably connected to the main frame through the connecting assembly.

[0013] According to some embodiments of this application, the sensing device further includes an inductive switch, the sensing assembly includes a fixing member and a sensing component, the sensor assembly includes an upper limit sensor and a lower limit sensor, the fixing member is fixedly mounted on the gear rotation fixing shaft, the sensing component is disposed on the fixing member, the sensing component is fixedly connected to the gear rotation fixing shaft through the fixing member, the inductive switch is connected to the driving assembly, and both the upper limit sensor and the lower limit sensor are used to detect the rotational position of the sensing component.

[0014] According to some embodiments of this application, the connecting assembly includes a fastener, the gear rotating fixed shaft includes a base, a round shaft, and a flat thread shaft, the round shaft is disposed on the base, the flat thread shaft is disposed on the round shaft, the driven gear is mounted on the round shaft, the damping component is configured as a first washer, the central through hole of the first washer is configured as a flat thread hole, the first washer is mounted on the flat thread shaft, the flat thread hole of the first washer is engaged with the flat thread shaft of the gear rotating fixed shaft, and the fastener causes the first washer to abut against the driven gear.

[0015] According to some embodiments of this application, the connecting assembly further includes a wear-resistant gasket disposed between the driven gear and the first gasket.

[0016] According to some embodiments of this application, the drive assembly includes a drive component and a drive gear, the drive gear being connected to the driven gear, and the drive component being connected to the drive gear.

[0017] According to some embodiments of this application, one end of the rotating arm is connected to the connecting assembly, the other end of the rotating arm is provided with a first camera, and the middle part of the main frame is provided with a first hole for installing a second camera.

[0018] The teaching assessment device according to the embodiments of this application includes the rotating device described in any of the above embodiments. The teaching assessment device also includes a box frame assembly, a display screen, and a screen. The rotating device, the display screen, and the screen are all disposed on the box frame assembly.

[0019] The teaching assessment device according to this application also includes a lifting component, which is connected to the rotating device, the display screen, and the screen.

[0020] The teaching assessment device according to the embodiments of this application has at least the following beneficial effects:

[0021] The teaching assessment device of this application includes two rotating devices, a display screen, a screen, multiple lifting components, and a cabinet frame assembly. The rotating devices, display screen, and screen are all housed within the cabinet frame assembly. The lifting components control the raising and lowering of the rotating devices, display screen, and screen. During the teaching assessment process, the lifting components can raise the rotating devices, display screen, and screen above the cabinet frame assembly, allowing multiple cameras on the device to simultaneously capture details of the exam paper and a panoramic view of the examination room, achieving comprehensive monitoring and improving the fairness and accuracy of the assessment. The rotating devices employ a surface friction transmission structure with driven gears and damping components, enabling the rotating arm to open smoothly. When the rotating arm is pressed by an external force, the damping components slip relative to the driven gear, thus buffering the impact and preventing the driven gear from suddenly accelerating and damaging the drive assembly. Simultaneously, the sensor assembly works in conjunction with the sensing assembly to ensure that the drive assembly can intelligently control the reset of the rotating arm, further enhancing the stability and durability of the device. When the teaching assessment device is not in use, the rotating device, display screen and screen can be lowered back into the cabinet frame through the lifting component, achieving neat storage, reducing the wear and tear of the equipment exposed to the outside, and significantly extending the service life of the device. Attached Figure Description

[0022] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a rotating device according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the closing of the rotating device according to an embodiment of this application;

[0025] Figure 3 This is a schematic diagram showing the opening of the rotating device according to an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the lower limit sensor of a rotating device according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the upper limit sensor of a rotating device according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the structure of a rotating device according to another embodiment of this application;

[0029] Figure 7 for Figure 6 A schematic diagram of the closing of the rotating device according to another embodiment;

[0030] Figure 8 for Figure 6 A schematic diagram of the opening of the rotating device in another embodiment;

[0031] Figure 9 This is a schematic diagram of the structure of a teaching assessment device according to an embodiment of this application;

[0032] Figure 10 This is a schematic diagram showing the activation of a teaching assessment device according to an embodiment of this application;

[0033] Figure 11 This is a schematic diagram of the closing of a teaching assessment device according to an embodiment of this application.

[0034] Figure label:

[0035] Rotating arm 1; First camera 11; Third camera 12

[0036] Connecting component 2; gear rotating fixed shaft 21; base 211; flat wire shaft 212; round shaft 213; driven gear 22; first washer 23; fastener 24; concave washer 25; wear-resistant washer 26;

[0037] Drive assembly 3; drive component 31; drive gear 32; fixed base 33; positioning bearing housing 34;

[0038] Main frame 4; First hole 41; Second camera 42;

[0039] Fixing component 51; First sensing component 52; First sensing part 521; Second sensing part 522; Lower limit sensor 53; Upper limit sensor 54; Second sensing component 55; Third sensing part 551; Fourth sensing part 552;

[0040] Box frame assembly 6;

[0041] Display screen 7;

[0042] Screen 8;

[0043] Lifting component 9;

[0044] First rotating device 100; second rotating device 101. Detailed Implementation

[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0046] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] The following reference Figures 1 to 11 The rotating device and teaching assessment device in the embodiments of this application are described.

[0049] according to Figure 1 , Figure 2 and Figure 3 As shown, a rotating device according to one embodiment of this application includes a rotating arm 1, a connecting assembly 2, and a driving assembly 3. The connecting assembly 2 connects the rotating arm 1 to the driving assembly 3, and the driving assembly 3 drives the rotating arm 1 to rotate. The connecting assembly 2 includes a gear rotating fixed shaft 21, a driven gear 22, and a damping component. The gear rotating fixed shaft 21 is fixedly connected to the rotating arm 1 by bolts, and the gear rotating fixed shaft 21 moves synchronously with the rotating arm 1. The driven gear 22 is mounted on the gear rotating fixed shaft 21 and can rotate relative to the gear rotating fixed shaft 21, and can also rotate synchronously with the gear rotating fixed shaft 21. The damping component is fixedly installed on the gear rotating fixed shaft 21 and is synchronously rotatably connected to the gear rotating fixed shaft 21. The damping component rotates with the gear rotating fixed shaft 21 and remains stationary when stationary. The damping component abuts against the driven gear 22, and the contact between the damping component and the driven gear 22 is a surface friction contact, with transmission through surface friction force. The driving assembly 3 is connected to the driven gear 22.

[0050] When the drive assembly 3 is started, it drives the driven gear 22 to rotate. The torque of the driven gear 22 is greater than the surface friction torque between the driven gear 22 and the damping component. The driven gear 22 drives the damping component to rotate, and the damping component rotates synchronously with the gear rotation fixed shaft 21. The gear rotation fixed shaft 21 rotates synchronously with the rotating arm 1, and finally the rotating arm 1 rotates to the preset position. When the rotating arm 1 is in the open state, the drive assembly is locked, locking the driven gear 22. When an external force swings and presses the rotating arm 1, the gear rotation fixed shaft 21 and the damping component rotate rapidly and synchronously. The torque of the damping component is greater than the surface friction torque between the driven gear 22 and the damping component. The damping component rotates relative to the driven gear 22. The damping component rotates freely and slips, while the driven gear 22 does not rotate. The damping component will not drive the driven gear 22 to rotate, thus effectively preventing excessive torque from being transmitted to the drive assembly 3, avoiding damage to the drive assembly 3 due to sudden force, protecting the drive assembly 3, improving the reliability and durability of the rotating device, greatly increasing the service life of the rotating device, and reducing the cost of maintenance or equipment replacement.

[0051] according to Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of this application, the rotating device further includes a main frame 4 and a sensing device. The sensing device is used to detect the swing angle of the rotating arm 1. The main frame 4 is a hollow frame. The sensing device includes a sensor assembly and a sensing component. The sensor assembly is used to sense the position of the sensing component. The sensing component is fixedly mounted on the gear rotating fixed shaft 21. The sensing component rotates synchronously with the gear rotating fixed shaft 21. The sensor assembly is disposed in the main frame 4. The drive assembly 3 is disposed in the main frame 4. The rotating arm 1 is rotatably connected to the main frame 4 through the connecting assembly 2.

[0052] When the drive assembly 3 is turned on, the drive assembly 3 drives the driven gear 22 to rotate, the driven gear 22 drives the damping component to rotate, the damping component, the gear rotation fixed shaft 21, the sensing component and the rotating arm 1 rotate synchronously, the sensor component senses the sensing component, the drive assembly 3 stops driving, and the rotating arm 1 stops rotating and reaches the preset position.

[0053] When an external force presses the rotating arm 1 downwards, the rotating arm 1 rotates, and the rotating arm 1 rotates synchronously with the gear rotating fixed shaft 21, which in turn rotates synchronously with the sensing component. The sensing component disengages from the sensor assembly, and the sensor assembly detects the rotation of the sensing component. After the rotating arm 1 stops rotating, the drive assembly 3 starts, and the drive assembly 3 drives the rotating arm 1 to rotate through the connecting assembly 2. This continues until the sensor assembly senses the sensing component, causing the drive assembly 3 to stop driving, and the rotating arm 1 stops rotating, completing its preset position rotation.

[0054] When the rotating arm 1 is pressed by an external force, the rotating device can not only protect the drive component 3 from damage by allowing the connecting component 2 to slip and idle, but also sense the position of the rotating arm 1 through a sensor and coordinate with the drive component 3 to rotate the rotating arm 1 back to the open position. The sensor enables automatic reset of the rotating arm 1 without manual intervention, significantly improving the intelligence of the rotating device.

[0055] according to Figures 1 to 8 As shown, in one embodiment of this application, the sensing device further includes a sensor switch connected to the drive assembly. When the sensor switch is turned on, the drive assembly starts; when the sensor switch is turned off, the drive assembly stops driving. The sensing assembly also includes a fixing member 51 and a sensing component (a first sensing component 52 or a second sensing component 55). The fixing member 51 is fixedly mounted on the round shaft 213 of the gear rotating fixed shaft 21. The sensing component (a first sensing component 52 or a second sensing component 55) is fixedly mounted on the fixing member 51. The sensing component (a first sensing component 52 or a second sensing component 55) is fixedly connected to the gear rotating fixed shaft 21 through the fixing member 51. The sensing component (a first sensing component 52 or a second sensing component 55) rotates synchronously with the gear rotating fixed shaft 21 and synchronously with the rotating arm 1. The sensor assembly includes an upper limit sensor 54 and a lower limit sensor 53. The upper limit sensor 54 is located at the top inside the main frame 4, and the lower limit sensor 53 is located at the upper end of the side inside the main frame 4. Both the upper limit sensor 54 and the lower limit sensor 53 are used to detect the rotational position of the sensing component (first sensing component 52 or second sensing component 55). When the upper limit sensor 54 senses the sensing component (first sensing component 52 or second sensing component 55), the rotating arm 1 is in the open state; when the lower limit sensor 53 senses the sensing component (first sensing component 52 or second sensing component 55), the rotating arm 1 is in the closed state. The drive assembly is connected to the sensor assembly via an inductive switch.

[0056] When the rotating arm 1 is opened, the drive assembly 3 drives the rotating arm 1 to rotate and open via the connecting assembly 2. The sensing component (first sensing component 52 or second sensing component 55) and the rotating arm 1 rotate synchronously. When the sensing component (first sensing component 52 or second sensing component 55) rotates to the upper limit sensor 54, the upper limit sensor 54 detects the sensing component (first sensing component 52 or second sensing component 55), the drive assembly 3 stops driving, and the rotating arm 1 stops rotating and reaches the preset opening position to complete the opening. When the rotating arm 1 is closed, the drive assembly 3 drives the rotating arm 1 to rotate and close via the connecting assembly 2. The sensing component (first sensing component 52 or second sensing component 55) and the rotating arm 1 rotate synchronously. When the sensing component (first sensing component 52 or second sensing component 55) rotates to the lower limit sensor 53, the lower limit sensor 53 detects the sensing component (first sensing component 52 or second sensing component 55), the drive assembly 3 stops driving, and the rotating arm 1 stops rotating and reaches the preset closing position to complete the closing.

[0057] When the rotating arm 1 is in the open state, it is pressed down by an external force. The sensing component (first sensing component 52 or second sensing component 55) and the rotating arm 1 rotate synchronously, and the sensing component (first sensing component 52 or second sensing component 55) disengages from the upper limit sensor 54. The upper limit sensor 54 can no longer detect the sensing component (first sensing component 52 or second sensing component 55). After a few seconds, the induction switch opens, the drive assembly 3 starts, and the rotating arm 1 rotates upward until the upper limit sensor 54 senses the sensing component (first sensing component 52 or second sensing component 55) again. Then, the induction switch closes, the drive assembly 3 stops driving, and the rotating arm 1 returns to the open state.

[0058] In some embodiments, such as Figure 1 and Figure 6 As shown, both the first sensing component 52 and the second sensing component 55 are configured as optical couplers. The sensor assembly is configured as an optocoupler, and both the upper limit sensor 54 and the lower limit sensor 53 are configured as optocouplers. The optocoupler includes a light-emitting device and a photosensitive device.

[0059] like Figure 1 , Figure 2 and Figure 3 As shown, the first rotating device 100 has a first sensing part 521 and a second sensing part 522. The first sensing part 521 and the second sensing part 522 are set at a first angle. When the rotating arm 1 is in the open state, the rotating arm 1 rotates at a second angle. The first angle is equal to 270 degrees minus the second angle. In this embodiment, the rotation angle of the first rotating device 100 is 125 degrees, the second angle is 125 degrees, that is, the first angle is 145 degrees, and the first sensing part 521 and the second sensing part 522 are set at a 145-degree angle.

[0060] When the control rotating arm 1 opens, the drive assembly 3 starts, driving the driven gear 22 to rotate. The torque of the driven gear 22 is greater than the surface friction torque between the driven gear 22 and the damping component. The driven gear 22 drives the damping component to rotate. The damping component, the gear rotation fixed shaft 21, and the rotating arm 1 rotate synchronously. The first sensing component 52 rotates 125 degrees clockwise synchronously with the rotating arm 1. When the first sensing part 521 rotates to the upper limit sensor 54, the first sensing part 521 aligns with the upper limit sensor 54. The upper limit sensor 54 senses the first sensing part 521. The photosensitive device of the upper limit sensor 54 receives the light signal, and the drive assembly 3 stops driving, causing the rotating arm 1 to stop rotating. The rotating arm 1 reaches the preset position and completes the opening, entering the open state.

[0061] When the rotating arm 1 is in the open state and the drive assembly is locked, the driven gear is locked. When the rotating arm 1 is pressed down by force, the damping component, the gear rotation fixed shaft 21, the first sensing component 52 and the rotating arm 1 rotate synchronously. The torque of the damping component is greater than the surface friction torque between the driven gear 22 and the damping component. The damping component slips relative to the driven gear 22 and the driven gear 22 will not rotate with the damping component, thus protecting the drive assembly 3. The first sensing part 521 rotates and disengages from the upper limit sensor 54. The upper limit sensor 54 can no longer sense the first sensing part 521, and the photosensitive device of the upper limit sensor 54 no longer receives light signals. The light signal is converted into an electrical signal. After a few seconds, the sensor switch is turned on, which starts the drive component 3. The drive component 3 drives the rotating arm 1 to rotate upward. The first sensing component 52 rotates until the upper limit sensor 54 senses the first sensing part 521 again. The photosensitive device of the upper limit sensor 54 receives the light signal again, the sensor switch is turned off, the drive component 3 stops driving, the rotating arm 1 stops rotating, and the rotating arm 1 returns to the preset position to complete the opening and restore the open state.

[0062] When the rotating arm 1 is closed, the drive assembly 3 is activated, driving the driven gear 22 to rotate. The torque of the driven gear 22 is greater than the surface friction torque between the driven gear 22 and the damping component. The driven gear 22 drives the damping component to rotate, and the damping component, the gear rotation fixed shaft 21, and the rotating arm 1 rotate synchronously. The first sensing component 52 rotates 125 degrees counterclockwise synchronously with the rotating arm 1. When the second sensing part 522 rotates to the lower limit sensor 53, the second sensing part 522 aligns with the lower limit sensor 53. The lower limit sensor 53 senses the second sensing part 522, and the photosensitive device of the lower limit sensor 53 receives the light signal. The drive assembly 3 stops driving, causing the rotating arm 1 to stop rotating and reach the preset closed position, thus entering the closed state.

[0063] In some embodiments, such as Figure 6 , Figure 7 and Figure 8 As shown, the second rotating device 101 has a second sensing component 55 equipped with a third sensing part 551 and a fourth sensing part 552. The third sensing part 551 and the fourth sensing part 552 are arranged at a third angle. When the rotating arm 1 is in the open state, the rotating arm 1 rotates at a fourth angle, which is equal to 270 degrees minus the fourth angle. In this embodiment, the rotation angle of the second rotating device 101 is 90 degrees, the fourth angle is 90 degrees, that is, the third angle is 180 degrees, and the third sensing part 551 and the fourth sensing part 552 are arranged at 180 degrees.

[0064] When the control rotating arm 1 opens, the drive assembly 3 starts, driving the driven gear 22 to rotate. The torque of the driven gear 22 is greater than the surface friction torque between the driven gear 22 and the damping component. The driven gear 22 drives the damping component to rotate. The damping component, the gear rotation fixed shaft 21, and the rotating arm 1 rotate synchronously. The third sensing component rotates 90 degrees clockwise synchronously with the rotating arm 1. When the third sensing part 551 rotates to the upper limit sensor 54, the third sensing part 551 aligns with the upper limit sensor 54. The upper limit sensor 54 senses the third sensing part 551. The photosensitive device of the upper limit sensor 54 receives the light signal, and the drive assembly 3 stops driving, causing the rotating arm 1 to stop rotating. The rotating arm 1 reaches the preset position and completes the opening, and is in the open state.

[0065] With the rotating arm 1 in the open state and the drive assembly locked, the driven gear is locked. When the rotating arm 1 is pressed down forcefully, the damping component, the gear rotation fixing shaft 21, the second sensing component 55, and the rotating arm 1 rotate synchronously. The torque of the damping component is greater than the surface friction torque between the driven gear 22 and the damping component. The damping component slips relative to the driven gear 22, and the driven gear 22 will not rotate with the damping component, thus protecting the drive assembly 3. The third sensing part 551 rotates and disengages from the upper limit sensor 54. The upper limit sensor 54 can no longer sense the third sensing part 551, and the photosensitive device of the upper limit sensor 54 no longer receives light signals. After a few seconds, the sensor switch opens, the drive assembly 3 starts, and the drive assembly 3 drives the rotating arm 1 to rotate upwards. The second sensing component 55 rotates until the upper limit sensor 54 senses the third sensing part 551 again. The photosensitive device of the upper limit sensor 54 receives light signals again, the sensor switch closes, the drive assembly 3 stops driving, the rotating arm 1 stops rotating, and the rotating arm 1 returns to the preset position, completing the opening and restoring the open state.

[0066] When the rotating arm 1 is closed, the drive assembly 3 is activated, driving the driven gear 22 to rotate. The torque of the driven gear 22 is greater than the surface friction torque between the driven gear 22 and the damping component. The driven gear 22 drives the damping component to rotate, and the damping component, the gear rotation fixed shaft 21, and the rotating arm 1 rotate synchronously. The second sensing component 55 rotates 90 degrees counterclockwise synchronously with the rotating arm 1. When the fourth sensing part 552 rotates to the lower limit sensor 53, the fourth sensing part 552 aligns with the lower limit sensor 53. The lower limit sensor 53 senses the fourth sensing part 552, and the photosensitive device of the lower limit sensor 53 receives the light signal. The drive assembly 3 stops driving, causing the rotating arm 1 to stop rotating and reach the preset closed position, thus entering the closed state.

[0067] according to Figure 1 and Figure 6 As shown, in one embodiment of this application, the gear rotating fixed shaft 21 includes a base 211, a round shaft 213, and a flat wire shaft 212. The round shaft 213 is disposed at the center of the base 211, and the flat wire shaft 212 is disposed on the round shaft 213. The driven gear 22 has a round hole at its center and is movably mounted on the round shaft 213, allowing it to rotate relative to the gear rotating fixed shaft 21. The damping component is a first washer 23, which is drivenly mounted on the flat wire shaft 212. The first washer 23 has an eccentric hole at its center and engages with the flat wire shaft 212, allowing the first washer 23 to rotate synchronously with the gear rotating fixed shaft 21. The connecting assembly 2 also includes a fastener 24, which is sleeved on the flat wire shaft 212. The fastener 24 presses the first washer 23 and the driven gear 22 onto the base 211 of the gear rotation fixed shaft 21. The driven gear 22 abuts against the base 211, and the fastener 24 abuts against one side of the first washer 23. The other side of the first washer 23 abuts against the driven gear 22. The fastener 24 presses the first washer 23 onto the driven gear 22, so that there is a surface friction contact between the first washer 23 and the driven gear 22. The first washer 23 and the driven gear 22 are driven by surface friction.

[0068] In some embodiments, the fastener 24 is configured as a fastening nut, which can ensure that the frictional torque between the first washer 23 and the driven gear 22 is within a suitable range, which not only ensures the normal operation of the equipment, but also makes the device adjustable to meet the needs of different working environments.

[0069] In some other embodiments, the damping component can be configured as a damping block, which is integrally connected to the gear rotation fixed shaft 21. The damping block abuts against the driven gear 22, and the damping block and the driven gear 22 are driven by surface friction.

[0070] according to Figure 1 and Figure 6As shown, in one embodiment of this application, the rotating arm 1 further includes a recessed gasket 25, which is disposed between the first gasket 23 and the fastener 24. The fastener 24 abuts against one side of the groove of the recessed gasket 25, and the protruding side of the recessed gasket 25 abuts against the first gasket 23. The recessed gasket 25 secures the fastener 24, which abuts against the groove of the recessed gasket 25, and the protruding side of the recessed gasket 25 abuts against the first gasket 23. The recessed gasket 25 applies pressure to the first gasket 23, causing the first gasket 23 to abut against the driven gear 22, increasing the surface friction between the first gasket 23 and the driven gear 22, thereby achieving better transmission performance. The recessed gasket 25 has a certain degree of elasticity, providing buffering and shock absorption during the operation of the rotating device, effectively absorbing the impact force during the movement of the rotating arm 1, and reducing the impact of sudden external forces on the fastener 24, the first gasket 23, and other transmission components. It can also reduce fatigue wear, extend the overall service life of the rotating device, and reduce maintenance requirements.

[0071] according to Figure 1 and Figure 6 As shown in one embodiment of this application, the rotating device further includes a wear-resistant shim 26. The wear-resistant shim 26 is movably mounted on the gear rotation fixed shaft 21 and is disposed between the driven gear 22 and the first shim 23. The wear-resistant shim 26 is integrally connected to the driven gear 22 and rotates synchronously with the driven gear 22. The wear-resistant shim 26 can rotate relative to the first shim 23. During long-term use, the driven gear 22 is prone to wear due to friction from the first shim 23. By providing the wear-resistant shim 26, the wear resistance of the driven gear 22 is enhanced, the wear pressure is effectively dispersed, and the direct contact wear of the driven gear 22 is reduced, thereby extending the service life of the driven gear 22 and the entire rotating device and reducing maintenance costs.

[0072] In some embodiments, the driven gear 22 and the wear-resistant shim 26 are integrally formed. The driven gear 22 with the wear-resistant shim 26, the first shim 23, the recessed shim 25, and the fastener 24 are sequentially mounted on the gear rotation fixed shaft 21. The driven gear 22 with the wear-resistant shim 26 is movably mounted on the round shaft 213. The first shim 23 and the recessed shim 25 are mounted on the flat wire shaft 212. The fastener 24 is pressed and locked, and the fastener 24 presses the recessed shim 25 so that the recessed shim 25 abuts against the first shim 23, and the first shim 23 abuts against the wear-resistant shim 26. Through the cooperation of the fastener 24 and the recessed shim 25, the surface friction between the first shim 23 and the wear-resistant shim 26 is increased, so that the transmission performance of the first shim 23 and the driven gear 22 is better.

[0073] In some embodiments, a first washer, a wear-resistant washer, and a recessed washer are provided on both sides of the driven gear. A recessed washer, a first washer, a wear-resistant washer, a driven gear, a wear-resistant washer, a first washer, a recessed washer, and a fastener are coaxially mounted sequentially on the gear rotating fixed shaft. The fastener and the base of the gear rotating fixed shaft cooperate to press the various components together, which helps to form a symmetrical transmission structure on both sides of the driven gear, balancing the force on both sides, avoiding uneven wear, and further improving the overall stability and durability of the rotating device. Simultaneously, by pressing the components together with the base of the gear rotating fixed shaft, the fastener ensures a tight fit between the components during the movement of the rotating arm, improving transmission performance.

[0074] In some embodiments, the wear-resistant pad 26 has a high coefficient of friction, which can increase the surface friction between the first pad 23 and the driven gear 22, so that the driven gear 22 can better drive the rotation of the first pad 23.

[0075] according to Figure 1 and Figure 6 As shown, in one embodiment of this application, the drive component 3 includes a drive component 31 and a drive gear 32. The drive component 31 is connected to the drive gear 32, and the drive gear 32 and the driven gear 22 are gear connected. The drive component 31 drives the driven gear 22 to rotate by driving the drive gear 32 to rotate.

[0076] In some embodiments, the drive component 31 is configured as a motor drive component. When the rotating device is in the open state, clicking the drive component locks the drive gear 32, which in turn locks the driven gear 22. When the rotating arm is pressed by an external force, the gear rotation fixed shaft 21 rotates synchronously with the first pad 23. The torque of the first pad 23 is greater than the surface friction torque between the first pad 23 and the wear-resistant pad 26. The first pad 23 slips relative to the wear-resistant pad 26, and the driven gear 22 does not rotate with the first pad. The drive gear 32 does not rotate, thereby protecting the motor drive component and improving the service life of the rotating device. In other embodiments, the drive component 31 may also be configured as a hydraulic drive component or other drive components.

[0077] In some embodiments, the drive assembly 3 further includes a mounting base 33, which is fixedly installed in the main frame 4. The mounting base 33 is used to fix the drive motor, which is fixedly installed on the mounting base 33 by bolts. A positioning bearing seat 34 is provided on the mounting base 33, which is used to connect and fix the rotating fixed shaft 21 of the fixed gear.

[0078] according to Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, in one embodiment of this application, one end of the rotating arm 1 of the first rotating device 100 is connected to the connecting component 2, and the other end of the rotating arm 1 is provided with a first camera 11. A first hole 41 is provided in the middle of the main frame 4, for mounting a second camera 42, which is installed at the first hole 41. One end of the rotating arm 1 of the second rotating device 101 is connected to the connecting component 2, and the other end of the rotating arm 1 is provided with a third camera 12. The rotating arm 1 is connected to the driving component 3 via the connecting component 2, and the driving component 3 drives the rotating arm 1 to rotate via the connecting component 2, causing the camera to reach a specific position. The arrangement of multiple cameras is used for comprehensive monitoring of the examination scenario.

[0079] according to Figure 10 As shown, one embodiment of the teaching assessment device of this application includes a rotating device, a cabinet frame assembly 6, a display screen, and a screen 8. The rotating device, the display screen 7, and the screen 8 are all disposed on the upper surface of the cabinet frame assembly 6.

[0080] In some embodiments, two rotating devices are configured, including a first rotating device 100 and a second rotating device 101. The first rotating device 100, the second rotating device 101, the display screen 7, and the screen 8 are all disposed on the upper surface of the cabinet frame assembly 6. The first rotating device 100 is located in the middle of the cabinet frame assembly 6, the second rotating device 101 is located on the side of the cabinet frame assembly 6, the display screen is located on the other side of the cabinet frame assembly 6, and the screen 8 is located behind the rotating devices and the display screen 7. During teaching assessment, the rotating arm of the first rotating device 100 rotates 125 degrees clockwise, entering the open state. The first camera 11 of the first rotating device 100 is used to monitor the details of the exam paper on the desktop, and the second camera 42 is used to monitor the examinees. The rotating arm of the second rotating device 101 rotates 90 degrees clockwise, entering the open state, and the third camera 12 of the second rotating device 101 is used to simultaneously monitor both the examinees and the entire exam paper. The arrangement of multiple cameras effectively improves the comprehensiveness and accuracy of monitoring, ensuring that there are no blind spots during teaching assessment.

[0081] In other embodiments, multiple rotating devices may be provided.

[0082] according to Figure 9 , Figure 10 and Figure 11 As shown, in one embodiment of this application, the teaching assessment device further includes a lifting component 9, which is connected to the rotating device, the display screen 7, and the screen 8. The lifting component 9 is used to control the lifting of the rotating device, the display screen 7, and the screen 8, and the rotating device, the display screen 7, and the screen 8 rise and fall together.

[0083] In some embodiments, the lifting assembly 9 includes a first lifting assembly 9, a second lifting assembly 9, and a third lifting assembly 9. A first rotating device 100 and a second rotating device 101 are connected to the first lifting assembly 9, a display screen 7 is connected to the second lifting assembly 9, and a screen 8 is connected to the third lifting assembly 9. Each lifting assembly 9 can be controlled independently.

[0084] When not in use, the two rotating devices, display screen 7, and screen 8 can be lowered and stored inside the housing frame 6 using the lifting assembly 9 to prevent damage from collisions, thus protecting the equipment, extending the service life of the teaching and assessment device, and also increasing the aesthetics of the device. When in use, the two rotating devices, display screen 7, and screen 8 are raised to the upper surface of the housing frame 6 using the lifting assembly 9.

[0085] The teaching assessment device of this application includes two rotating devices, a display screen 7, a screen 8, a lifting assembly 9, and a cabinet frame assembly 6. The overall structure is compact and highly integrated. All core components are installed inside the cabinet frame assembly 6 and their up-and-down movement is controlled by the lifting assembly 9 to meet different usage needs.

[0086] During the teaching assessment process, the lifting assembly 9 can raise the two rotating devices, the display screen 7, and the screen 8 above the cabinet frame assembly 6, allowing multiple cameras on the two rotating devices to comprehensively capture the details of the exam paper and the entire examination room, achieving all-round, blind-spot-free real-time monitoring and improving the fairness and accuracy of the assessment. The rotating device adopts a friction transmission structure with the driven gear 22 and the first washer 23 cooperating to ensure the stability of the rotating arm 1 during rotation. When external force presses on the rotating arm 1, the first washer 23 can slide relative to the driven gear 22 within a certain range, effectively buffering the impact force and preventing the driven gear 22 from being damaged by sudden excessive force, thus preventing damage to the drive assembly 3. In addition, the sensor assembly and the sensing assembly work together to realize intelligent control of the drive assembly 3, ensuring that the rotating arm 1 can automatically reset after being disturbed by external force, improving the durability and safety of the device.

[0087] When the teaching assessment device is not in use, the rotating device, display screen 7, and screen 8 can be lowered back into the housing frame 6 via the lifting assembly 9 for neat storage, reducing wear and tear on the exposed equipment and extending its overall lifespan. The device is equipped with multiple high-definition cameras that simultaneously record the writing on the exam papers and the examination environment, providing accurate and objective evidence for teaching assessment. The overall design fully considers potential safety, stability, and durability issues during the examination process, ensuring that the equipment maintains efficient and reliable operation over long-term use.

[0088] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A rotating device, characterized in that: include Rotating arm; A connecting assembly, comprising a gear rotating fixed shaft, a driven gear, and a damping component, wherein the gear rotating fixed shaft is fixedly connected to the rotating arm; A drive assembly connected to the driven gear; The driven gear is mounted on the gear rotating fixed shaft, and the damping component is fixedly installed on the gear rotating fixed shaft. The damping component rotates synchronously with the gear rotating fixed shaft and abuts against the driven gear.

2. The rotating device according to claim 1, characterized in that: It also includes a main frame and a sensing device. The sensing device includes a sensor assembly and a sensing component. The sensing component is disposed on the gear rotation fixed shaft and is disposed within the main frame. The drive assembly is disposed within the main frame. The rotating arm is rotatably connected to the main frame through the connecting assembly.

3. The rotating device according to claim 2, characterized in that: The sensing device further includes an inductive switch. The sensing assembly includes a fixing member and a sensing component. The sensor assembly includes an upper limit sensor and a lower limit sensor. The fixing member is fixedly mounted on the gear rotation fixed shaft. The sensing component is disposed on the fixing member. The sensing component is fixedly connected to the gear rotation fixed shaft through the fixing member. The inductive switch is connected to the drive assembly. Both the upper limit sensor and the lower limit sensor are used to detect the rotation position of the sensing component.

4. The rotating device according to claim 1, characterized in that: The connecting assembly includes a fastener. The gear rotating fixed shaft includes a base, a round shaft, and a flat thread shaft. The round shaft is disposed on the base, and the flat thread shaft is disposed on the round shaft. The driven gear is mounted on the round shaft. The damping component is a first washer. The central through hole of the first washer is a flat thread hole. The first washer is mounted on the flat thread shaft. The flat thread hole of the first washer engages with the flat thread shaft of the gear rotating fixed shaft. The fastener causes the first washer to abut against the driven gear.

5. The rotating device according to claim 4, characterized in that: The connecting assembly further includes a recessed gasket disposed between the first gasket and the fastener, wherein the protruding side of the recessed gasket abuts against the first gasket.

6. The rotating device according to claim 4, characterized in that: The connecting assembly also includes a wear-resistant shim disposed between the driven gear and the first shim.

7. The rotating device according to claim 1, characterized in that: The drive assembly includes a drive component and a drive gear, the drive gear being connected to the driven gear, and the drive component being connected to the drive gear.

8. The rotating device according to claim 2, characterized in that: One end of the rotating arm is connected to the connecting assembly, and the other end of the rotating arm is provided with a first camera. The middle part of the main frame is provided with a first hole for installing a second camera.

9. A teaching assessment device, characterized in that: The teaching assessment device includes the rotating device as described in any one of claims 1 to 8, and further includes a box frame assembly, a display screen, and a screen, wherein the rotating device, the display screen, and the screen are all disposed in the box frame assembly.

10. The teaching assessment device according to claim 9, characterized in that: It also includes a lifting assembly, which is connected to the rotating device, the display screen, and the screen.

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