Cantilever supporting device and control method thereof

Abstract

The invention discloses a cantilever supporting device and a control method thereof. The cantilever supporting device comprises a supporting mechanism and a control module. Wherein the supporting mechanism comprises a main body and a driving assembly, a supporting avoiding through hole is formed in the main body, the supporting avoiding through hole extends in the width direction of the main body, the driving assembly is fixedly arranged at the bottom of the supporting avoiding through hole, and a first supporting part fixedly connected with the main body is arranged at the top of the supporting avoiding through hole; a second supporting component is arranged on the top of the driving assembly. The control module is electrically connected with the first supporting component and the driving assembly, and the control module is used for detecting an on-off signal between the first supporting component and the cantilever and controlling the driving assembly to drive the second supporting component to move in the height direction of the body according to the on-off signal. According to the cantilever supporting device and the control method thereof, at least the problems of the cantilever supporting device and the control method thereof can be solved.

Description

Technical Field

[0001] This application relates to the field of cantilever support technology, and more specifically, to a cantilever support device and its control method. Background Technology

[0002] In related technologies, cantilever structures such as cylindrical long cantilevers primarily support loads of varying weights at their front ends during practical use. However, due to limitations in rigidity and the influence of load torque, the front end of the cantilever is prone to sagging deformation, and the greater the load weight, the more significant the sagging. To address the sagging problem at the front end of the cantilever, related technologies mainly target planar cantilever structures or steel beam structures, employing multi-directional jacks combined with roller traction or elastic auxiliary supports. However, the multi-directional jack method with roller traction is structurally complex and difficult to adapt to the surface of cylindrical cantilever structures, resulting in poor adaptability and reliability. Elastic auxiliary supports rely on the workpiece's own weight and elasticity for passive adjustment, failing to cope with dynamic load changes, exhibiting poor adjustment accuracy, and being prone to support failure due to fatigue of the elastic elements, also resulting in poor adaptability and reliability. Furthermore, some structures in related technologies use a combination of sensors and electric actuators for support, requiring additional precision components such as displacement and pressure sensors, making the detection and control methods complex. Summary of the Invention

[0003] The main objective of this application is to provide a cantilever support device and its control method to solve the problems of poor adaptability and reliability of cantilever support structures in the prior art, as well as the complexity of the detection and control methods of cantilever support structures.

[0004] According to one aspect of this application, a cantilever support device is provided, comprising: A support mechanism includes a main body and a drive assembly. The main body is provided with a support clearance through hole that extends along the width direction of the main body. The drive assembly is fixedly disposed at the bottom of the support clearance through hole. A first support component that is fixedly connected to the main body is disposed at the top of the support clearance through hole. A second support component is disposed at the top of the drive assembly. The control module is electrically connected to the first support component and the drive assembly respectively. The control module is used to detect the on / off signal between the first support component and the cantilever, and control the drive assembly to drive the second support component to move along the height direction of the main body according to the on / off signal.

[0005] Furthermore, the drive assembly includes a drive motor, a reduction gear transmission structure, and a lifting plate. The drive motor is driven to the lifting plate through the reduction gear transmission structure to drive the lifting plate to move along the height direction of the main body. The second support component is fixedly connected to the top of the lifting plate.

[0006] Furthermore, the reduction transmission structure includes a transmission rod, a planetary reducer, and a screw jack. One end of the transmission rod is driven to the drive motor via the planetary reducer, and the other end of the transmission rod is driven to the screw jack. The screw jack is provided with a lifting part that can move along the height direction of the main body under the drive of the transmission rod. The lifting part is fixedly connected to the bottom of the lifting plate.

[0007] Furthermore, the reduction transmission structure includes two components, located on opposite sides of the drive motor along the length of the lifting plate, and both are situated at the bottom of the lifting plate; and / or, The second support component includes two second rollers. Along the length of the lifting plate, the two second rollers are located at both ends of the lifting plate and are fixedly connected to the top of the lifting plate.

[0008] Furthermore, the first support component includes two first rollers, both of which are located at the top of the support clearance through hole and are respectively fixedly connected to the main body; A conductive ring is provided on the outer surface of the first support roller, and a conductive terminal is provided on the conductive ring. The conductive terminal on each of the first support rollers is electrically connected to the control module. The control module is electrically connected to the outer wall of the cantilever. A detection circuit is formed between the control module, the conductive ring, the conductive terminal, and the outer wall of the cantilever.

[0009] Furthermore, the support mechanism also includes an elastic support assembly, which includes a bracket and an elastic connecting component. The first support roller is rotatably connected to the bracket, and the bracket is inserted into the main body through the elastic connecting component and can move relative to the main body along the height direction of the main body.

[0010] According to another aspect of this application, a control method for a cantilever support device is also provided, applicable to the aforementioned cantilever support device, the control method comprising: Step S1: Start the control module and initialize the cantilever support device, and control the first support roller to contact the outer wall of the cantilever so that the detection circuit is connected; Step S2: The control module acquires the on / off signal of the detection circuit in real time. When the front end of the cantilever deforms downward along the height direction of the main body under the action of the load, causing the first support roller to separate from the outer wall of the cantilever, the detection circuit is disconnected, and the control module receives the disconnection signal of the detection circuit. Step S3: The control module controls the drive motor to be powered on and run. Through the drive motor and the reduction transmission structure, the second support roller is controlled to move upward along the height direction of the main body, so that the second support roller moves to contact the outer wall of the cantilever and continues to move along the height direction of the main body to lift the cantilever. Step S4: When the second support roller raises the cantilever to a horizontal state so that the first support roller contacts the outer wall of the cantilever, the detection circuit is turned on. The control module receives the turn-on signal of the detection circuit, controls the drive motor to stop running and initializes the cantilever support device. Step S5: Repeat steps S2 to S4 to enable the cantilever support device to provide dynamic support for the cantilever.

[0011] Furthermore, the on / off signal is configured as a voltage signal of the detection circuit, wherein: When the voltage signal of the detection circuit is high, the detection circuit is in an open state; When the voltage signal of the detection circuit is low, the detection circuit is in the ON state.

[0012] Furthermore, the initialization step of the cantilever support device includes: The control module sends a reset signal to the drive motor, so that the drive motor and the reduction transmission structure control the second support roller to move downward along the height direction of the main body to the lowest position.

[0013] Furthermore, the control method further includes: The control module monitors the disconnection duration of the detection circuit in real time. When the disconnection duration exceeds a preset duration, the control module cuts off the power to the drive motor and issues an alarm; and / or, The control module detects in real time the upward movement distance of the second support roller along the height direction of the main body. When the movement distance exceeds a preset distance and the detection circuit is still in the open state, the control module cuts off the power supply to the drive motor and issues an alarm.

[0014] In this application, a cantilever support device is constructed with a main body featuring a support mechanism with a support clearance through-hole. This is complemented by a first support component, a drive assembly, and a second support component. A control module, based on the on / off signal between the first support component and the cantilever, controls the drive assembly to raise and lower the second support component. The rising of the second support component lifts the drooping cantilever front end to a horizontal position, achieving dynamic support for the cantilever. This cantilever support device has a simple and compact structure, adaptable to cantilever surfaces with special shapes such as cylindrical cantilevers, significantly improving its adaptability to different types of cantilevers. The control module achieves precise active adjustment through on / off signals, addressing scenarios with dynamic load changes and avoiding the low accuracy of passive adjustment and fatigue failure of elastic auxiliary supports. It also simplifies the detection and control logic, significantly improving the reliability and stability of the cantilever support device and effectively solving the problems of poor adaptability, poor reliability, and complex detection and control methods in existing cantilever support structures. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, are illustrative and descriptive, serving to explain this application and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall assembly structure of a cantilever support device disclosed in an embodiment of this application; Figure 2 This is a partial structural cross-sectional view of a cantilever support device disclosed in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a cantilever support device connected to a detection circuit, as disclosed in an embodiment of this application. Figure 4 This is a flowchart illustrating a control method for a cantilever support device disclosed in an embodiment of this application.

[0016] The above figures include the following reference numerals: 10. Main body; 11. Support clearance through hole; 12. Fixing hole; 20. Drive assembly; 21. Drive motor; 22. Reduction transmission structure; 221. Transmission rod; 222. Planetary reducer; 223. Screw jack; 2231. Lifting part; 23. Lifting plate; 30. First support component; 31. First support roller; 311. Conductive ring; 312. Conductive terminal; 40. Second support component; 41. Second support roller; 50. Control module; 60. Elastic support assembly; 61. Bracket; 611. Telescopic hole; 62. Elastic connecting component; 621. Connecting rod; 6211. Limiting part; 622. Spring; 70. Connecting wire; 200. Cantilever. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0020] As described in the background section, in related technologies, cantilever support structures generally employ multi-directional jacks combined with roller traction, elastic auxiliary support, or a combination of sensors and electric actuators. However, the multi-directional jack-with-roller traction method is structurally complex and suffers from poor adaptability and reliability. The elastic auxiliary support method relies on the workpiece's own weight and elasticity for passive adjustment, which cannot cope with dynamic load changes, and the elastic element is prone to failure after fatigue, resulting in poor adaptability and reliability. The sensor-electric actuator combination method requires additional precision components such as displacement sensors and pressure sensors, making the detection and control method complex. Therefore, this application provides a cantilever support device and its control method. The control module of the cantilever support device can use the on / off signal between the first support component and the cantilever as the control basis to control the drive component to raise and lower the second support component to achieve dynamic support of the cantilever, realizing active adjustment of the cantilever support. This allows it to adapt to different cantilever structures and dynamic load changes, and the detection and control logic is simple. The cantilever support device and its control method of this application will be described below with reference to the accompanying drawings.

[0021] See Figures 1 to 3As shown in the figure, this application embodiment provides a cantilever support device, including a support mechanism and a control module 50. The support mechanism includes a main body 10 and a drive assembly 20. The main body 10 has a support clearance through hole 11 extending along the width direction of the main body 10. The drive assembly 20 is fixedly disposed at the bottom of the support clearance through hole 11. A first support member 30, fixedly connected to the main body 10, is disposed at the top of the support clearance through hole 11, and a second support member 40 is disposed at the top of the drive assembly 20. The control module 50 is electrically connected to the first support member 30 and the drive assembly 20 respectively. The control module 50 is used to detect the on / off signal between the first support member 30 and the cantilever 200, and controls the drive assembly 20 to drive the second support member 40 to move along the height direction of the main body 10 according to the on / off signal.

[0022] Understandably, the cantilever 200, as a core load-bearing component in mechanical transmission and material handling, primarily achieves long-distance operation or material transfer through a structure where one end is fixed and the other end (the cantilever front end) is suspended. During operation, when the load on the cantilever front end is large, it can cause the cantilever front end to sag. The structure of the cantilever 200 includes planar cantilever structures, steel beam structures, and cylindrical structures, such as... Figure 1 and Figure 2As shown, this embodiment takes a cylindrical long cantilever as an example. When the cantilever support device supports the cantilever 200, the front end of the cantilever passes through the support clearance through hole 11 on the main body 10. When the front end of the cantilever remains horizontal due to a small load, the front end of the cantilever contacts the first support member 30 at the top of the support clearance through hole 11. At this time, the on / off signal between the first support member 30 and the cantilever 200 detected by the control module 50 is an on signal. When the front end of the cantilever sags due to a large load, the front end of the cantilever moves a certain distance away from the first support member 30 along the height of the main body 10. At this time, the on / off signal between the first support member 30 and the cantilever 200 detected by the control module 50 is an off signal. At this time, the control module 50 controls the drive assembly 20 to drive the second support part. The second support component 40 moves towards the cantilever 200 along the height direction of the main body 10. After the second support component 40 moves to abut against the front end of the cantilever, it continues to rise until the front end of the cantilever is in a horizontal state and contacts the first support component 30. At this time, the control module 50 detects that the on / off signal between the first support component 30 and the cantilever 200 is a connected signal. At this time, it controls the drive component 20 to drive the second support component 40 to descend to the lowest position, realizing dynamic support and closed-loop adjustment of the cantilever 200. This solves the problem of sagging caused by different weight loads on the front end of the cylindrical long cantilever. It can achieve non-contact, precise, and automatic correction, and can dynamically adapt to changes in load. It can ensure that the cantilever 200 can quickly return to a horizontal state, significantly improving the operating accuracy and stability of equipment with cantilever structures. Furthermore, the cantilever support device in this embodiment replaces complex sensor components with a simpler detection and drive linkage structure, which can significantly reduce costs and improve reliability under harsh working conditions.

[0023] Specifically, in this embodiment, the main body 10 is a frame structure, which is formed by welding Q235 steel plates or profiles to ensure the strength of the main body 10 and improve the structural strength and support capacity of the cantilever support device.

[0024] Furthermore, the drive assembly 20 in this embodiment includes a drive motor 21, a reduction transmission structure 22, and a lifting plate 23. The drive motor 21 is driven to the lifting plate 23 through the reduction transmission structure 22, so as to drive the lifting plate 23 to move along the height direction of the main body 10. The second support member 40 is fixedly connected to the top of the lifting plate 23.

[0025] Specifically, in this embodiment, when the drive component 20 drives the second support component 40 to move along the height direction of the main body 10, the drive motor 21 serves as the power source, and the reduction transmission structure 22 drives the lifting plate 23 to move along the height direction of the main body 10 under the action of the drive motor 21. The reduction transmission structure 22 can convert the high-speed power of the drive motor 21 into a low-speed, high-torque power along the height direction of the main body 10, so that the first support component 30 can lift the heavy cantilever front end and the heavy load on the cantilever front end to a horizontal state, thereby improving the support capacity of the cantilever support device in this embodiment.

[0026] Optionally, the drive motor 21 in this embodiment is a stepper motor, such as a 57HS22 stepper motor, which can achieve a rated speed of 1440 rpm and an output torque of 2 N. m.

[0027] Furthermore, the speed reduction transmission structure 22 in this embodiment includes a transmission rod 221, a planetary reducer 222, and a screw jack 223. One end of the transmission rod 221 is driven and connected to the drive motor 21 through the planetary reducer 222, and the other end of the transmission rod 221 is driven and connected to the screw jack 223. The screw jack 223 is provided with a lifting part 2231 that can move along the height direction of the main body 10 under the drive of the transmission rod 221. The lifting part 2231 is fixedly connected to the bottom of the lifting plate 23.

[0028] Specifically, in this embodiment, one end of the transmission rod 221 is driven and connected to the drive motor 21 via a planetary reducer 222. Therefore, the drive motor 21 can drive the transmission rod 221 to rotate along its own axis. The planetary reducer 222 has a built-in reduction gear set, which has a large transmission ratio, significantly reducing the rotational speed between the drive motor 21 and the transmission rod 221, and enhancing the torque of the transmission rod 221. The other end of the transmission rod 221 is driven and connected to the screw jack 223. The screw jack 223 is based on the screw transmission principle, enabling the lifting part 2231 to move along the height direction of the main body 10 under the action of the transmission rod 221. The lifting part 2231 is fixedly connected to the bottom of the lifting plate 23, which can further drive the lifting plate 23 to move along the height direction of the main body 10.

[0029] In this embodiment, by incorporating a large-ratio planetary reduction gear set into the planetary reducer 222 between the drive motor 21 and the transmission rod 221, the rotational speed of the drive motor 21 output to the transmission rod 221 can be significantly reduced, while the torque of the transmission rod 221 can be significantly increased. This ensures that the lifting plate 23 has sufficient and stable driving force when driving the second support component 40, effectively avoiding support failure or movement jamming caused by insufficient driving force. The screw jack 223, based on the screw transmission principle, converts the rotational motion of the transmission rod 221 into the linear motion of the lifting part 2231 along the height direction of the main body 10. In conjunction with the planetary reducer 222, high-precision displacement adjustment of the lifting part 2231 can be achieved, ensuring the contact degree between the second support component 40 and the cantilever 200 and improving the support stability of the cantilever 200.

[0030] Optionally, in this embodiment, the transmission ratio of the reduction gear set is 1:50, the output speed is 30 rpm, and it can drive the second support roller 41 to a maximum lifting speed of 10 mm / s and a maximum lifting stroke of 50 mm.

[0031] Preferably, see Figures 1 to 3 As shown, the reduction transmission structure 22 in this embodiment includes two components. Along the length of the lifting plate 23, the two reduction transmission structures 22 are located on both sides of the drive motor 21 and are both disposed at the bottom of the lifting plate 23. By setting two reduction transmission structures 22 and placing them on both sides of the drive motor 21, the lifting plate 23 can be subjected to uniform force, ensuring that the second support component 40 can be raised and lowered stably. Simultaneously, the coordinated driving of the two reduction transmission structures 22 can enhance the overall load capacity, improve the support capacity of the second support component 40 for the cantilever 200, and further enhance the stability and reliability of the cantilever support device in this embodiment when supporting the cantilever 200.

[0032] Preferably, see Figure 3 As shown, the second support component 40 in this embodiment includes two second rollers 41. Along the length of the lifting plate 23, the two second rollers 41 are located at both ends of the lifting plate 23 and are fixedly connected to the top of the lifting plate 23. Thus, the two second rollers 41, positioned at both ends of the lifting plate 23 along its length, can form multi-point support with the cantilever 200, increasing the support contact area and making the force on the cantilever 200 more even. Simultaneously, the roller structure can convert sliding friction at the support point into rolling friction, significantly reducing the frictional resistance between the cantilever 200 and the second support component, reducing wear and tear during relative movement, and extending the service life of the device. Furthermore, the matching of the two second rollers 41 with the two reduction transmission structures 22 further improves the stability and fit of the support for the cantilever 200, ensuring the smoothness of the support process.

[0033] Preferably, in this embodiment, the second support roller 41 is made of high-strength wear-resistant steel to reduce wear on the second support roller 41 during the process of supporting the cantilever 200 and improve the service life of the second support roller 41.

[0034] Preferably, see Figure 3 As shown, the first support component 30 in this embodiment includes two first rollers 31, both of which are located at the top of the support clearance through hole 11 and are fixedly connected to the main body 10. Thus, the two first rollers 31 can form a stable multi-point support structure with the cantilever 200, increasing the support contact area and ensuring uniform force distribution on the cantilever. Simultaneously, the rolling friction characteristics of the first rollers 31 can significantly reduce the frictional resistance between the cantilever 200 and the first rollers 31, reducing wear during relative movement and extending the service life of the second rollers 41 and the cantilever 200. Furthermore, the structures of the two first rollers 31 correspond to the structures of the two second rollers 41, improving the support stability of the cantilever 200. The two first rollers 31 can also cooperate with the control module 50 to form detection loops, facilitating the control module's detection of the on / off signals between the first rollers 31 and the cantilever 200, thus improving the sensitivity and accuracy of support adjustment.

[0035] Further, see Figure 1 and Figure 2 As shown, the outer surface of the first support roller 31 in this embodiment is provided with a conductive ring 311, and a conductive terminal 312 is provided on the conductive ring 311. The conductive terminal 312 on each first support roller 31 is electrically connected to the control module 50. The control module 50 is electrically connected to the outer wall of the cantilever. A detection circuit is formed between the control module 50, the conductive ring 311, the conductive terminal 312, and the outer wall of the cantilever 200.

[0036] In this embodiment, when the two first rollers 31 abut against the surface of the cantilever 200, the conductive rings 311 of the two first rollers 31 contact the outer wall of the cantilever 200. Since the outer wall of the cantilever 200 is a conductive structure, and the control module 50 is electrically connected to the conductive terminals 312 on the two first rollers 31 respectively, see [reference]. Figure 2 The control module 50, either of the two first rollers 31, forms a detection loop with the outer wall of the cantilever 200 and with the control module 50. When the conductive ring 311 of the first roller 31 contacts the outer wall of the cantilever 200, the control module 50 detects that the on / off signal of the detection loop is a disconnected signal. When the conductive ring 311 of either first roller 31 disengages from the outer wall of the cantilever 200, the control module 50 detects that the on / off signal of the detection loop is a connected signal.

[0037] Preferably, in this embodiment, the first support roller 31 is an insulating support roller, that is, the first support roller 31 is made of insulating material, and the conductive ring 311 is disposed on the outer circumferential surface of the insulating support roller. In this way, there will be no leakage of electricity to the main body 10 through the first support roller 31, which improves the safety of the cantilever support device.

[0038] Optionally, in this embodiment, the diameter of the first support roller 31 is set to 50mm and the width is set to 20mm to ensure the contact area between it and the outer wall of the cantilever 200 and improve the support effect on the cantilever 200.

[0039] Furthermore, the cantilever support device in this embodiment also includes a connecting wire 70. The control module 50 is electrically connected to the conductive terminal 312 via the connecting wire 70, and the control module 50 is electrically connected to the drive motor 21 via the connecting wire 70.

[0040] Preferably, the connecting wire is a copper core shielded wire with a cross-sectional area of ​​1.5 mm², which has strong anti-interference ability.

[0041] Preferably, the control module 50 in this embodiment has a built-in signal processing unit and a closed-loop control program, which can receive the on / off signal of the detection circuit in real time and control the drive motor 21 to start and stop, realizing the automatic control logic of "detection circuit disconnected → drive motor started → second support roller lifted → detection circuit connected → drive motor stopped".

[0042] Preferably, the control module 50 in this embodiment has a built-in delay protection module, which can avoid the frequent start and stop of the drive motor 21 caused by the frequent switching of the detection circuit, thus preventing the motor from burning out.

[0043] Optionally, the control module 50 in this embodiment includes a PLC controller or a microcontroller, such as an STM32F103 microcontroller as the main control chip. The STM32F103 microcontroller has a clock frequency of 72MHz and a built-in AD conversion module, which can acquire the on / off signals of the detection circuit in real time. The control program of the STM32F103 microcontroller is written in C language and includes functional modules such as signal processing, motor drive, and delay protection. Parameter debugging, such as delay time and alarm threshold, can be achieved through serial port.

[0044] Preferably, the cantilever support device in this embodiment further includes a signal amplification module (not shown in the figure), which is built into the detection circuit. The signal amplification module uses an LM324 operational amplifier, which can convert the on / off signal into a 0-5V voltage signal, thereby improving the recognition sensitivity of the control module 50 and enabling the detection of a minimum sag of 0.1mm on the cantilever 200.

[0045] Furthermore, the support mechanism in this embodiment also includes an elastic support component 60, which includes a bracket 61 and an elastic connecting component 62. The first support roller 31 is rotatably connected to the bracket 61, and the bracket 61 is inserted into the main body 10 through the elastic connecting component 62 and can move relative to the main body 10 along the height direction of the main body 10.

[0046] Understandably, the cantilever 200 used in the cantilever support device in this embodiment can be a metal cantilever or a non-metallic cantilever. When the cantilever 200 is a metal cantilever, the metal cantilever can directly form a detection circuit with the conductive ring 311 on the first support roller 31 and the control module 50. When the cantilever is a non-metallic cantilever, a conductive structure needs to be provided at the position where it contacts the conductive ring 311 to form a detection circuit, and the control module 50 is electrically connected to the conductive structure to ensure that the control module 50 can detect the on / off signal.

[0047] See Figure 2 As shown, in this embodiment, the bracket 61 has two telescopic holes 611 along the axial direction of the first support roller 31. The elastic connecting component 62 includes a connecting rod 621 and a spring 622. The main body 10 has a fixing hole 12 extending along its own height and located at the top of the support clearance through hole 11. One end of the connecting rod 621 can telescopically pass through the telescopic hole 611, and a limiting part 6211 is provided at the end of the connecting rod 621 located in the telescopic hole 611 to prevent the connecting rod 621 from disengaging from the telescopic hole 611 and to ensure that the first support roller 31 will not fall off. The other end of the connecting rod 621... One end is fixedly inserted into the fixing hole 12. The spring 622 is sleeved on the connecting rod 621 and located between the bracket 61 and the main body 10, so that the first support roller 31 has a certain floating ability. When the first support roller 31 contacts the outer wall of the cantilever 200, it can press against the cantilever, so that the first support roller 31 and the outer wall of the cantilever 200 maintain a preset contact pressure, ensuring that the control module 50 can accurately detect the disconnection signal, and can avoid the situation where the cantilever 200 is not yet in a horizontal state when it is raised to contact the first support roller 31, thus ensuring the support effect of the cantilever 200.

[0048] Preferably, the spring 622 is a cylindrical spring with a diameter of 16mm and an elastic coefficient of 5N / mm. This ensures that the contact pressure between the first support roller 31 and the outer wall of the cantilever 200 is maintained at 5-8N, i.e., the preset contact pressure, thus avoiding hard contact or poor contact between the first support roller 31 and the outer wall of the cantilever 200.

[0049] See Figure 4 As shown, according to another aspect of this application, a control method for a cantilever support device is also provided, applicable to the aforementioned cantilever support device, the control method comprising: Step S1: Start the control module 50 and initialize the cantilever support device, and control the first support roller 31 to contact the outer wall of the cantilever 200 so that the detection circuit is connected.

[0050] Specifically, the steps for initializing the cantilever support device include: The control module 50 sends a reset signal to the drive motor 21, so that the drive motor 21 and the reduction transmission structure 22 control the second support roller to move downward along the height direction of the main body 10 to the lowest position.

[0051] In this embodiment, before initializing the cantilever support device, the control module 50 needs to be started first to perform port initialization and self-test. The cantilever support device is controlled to move until the first support roller 31 is in close contact with the outer wall of the cantilever 200 through the elastic support component 60 so that the detection circuit is connected. Then initialization is performed so that the drive motor 21 is in standby mode and the cantilever support device enters ready mode. At this time, the indicator light (not shown in the figure) is constantly lit.

[0052] Step S2: The control module 50 acquires the on / off signal of the detection circuit in real time. When the front end of the cantilever deforms downward along the height direction of the main body 10 under the action of the load, causing the first support roller 31 to separate from the outer wall of the cantilever 200, the detection circuit is disconnected, and the control module 50 receives the disconnection signal of the detection circuit.

[0053] Specifically, in this embodiment, the on / off signal is configured as the voltage signal of the detection circuit. When the voltage signal of the detection circuit is high, the detection circuit is in an off state; when the voltage signal of the detection circuit is low, the detection circuit is in an on state. The control module 50 monitors the voltage signal of the detection circuit in real time. When the voltage signal changes from high (5V) to low (0V), it determines that the cantilever 200 is drooping and triggers an adjustment command. In this embodiment, determining the on / off signal of the detection circuit based on the level state of the voltage signal of the detection circuit improves the recognition sensitivity of the control module 50 and ensures the control effect.

[0054] Preferably, during the process of monitoring the voltage signal of the detection circuit, if the voltage signal of the detection circuit fluctuates frequently, the control module 50 initiates a delay judgment, with the delay judgment duration set to 0.2s to eliminate vibration interference.

[0055] Step S3: The control module 50 controls the drive motor 21 to be powered on and run. Through the drive motor 21 and the reduction transmission structure 22, the second support roller is controlled to move upward along the height direction of the main body 10, so that the second support roller 41 moves to contact the outer wall of the cantilever 200 and continues to move along the height direction of the main body 10 to lift the cantilever 200.

[0056] In this embodiment, when the control module 50 detects the disconnection signal, it will further send a start signal (positive pulse signal) to the drive motor 21, so that the drive motor 21 is powered on and runs. Then, through the reduction transmission structure 22, the second support roller 41 is driven to lift upward along the height direction of the main body 10, and the cantilever 200 is lifted simultaneously.

[0057] Step S4: When the second support roller 41 raises the cantilever to a horizontal state so that the first support roller 31 contacts the outer wall of the cantilever 200, the detection circuit is turned on. The control module 50 receives the turn-on signal of the detection circuit, controls the drive motor 21 to stop running and initializes the cantilever support device.

[0058] In this embodiment, when the control module 50 receives the connection signal again, it indicates that the cantilever 200 has been raised to a horizontal state by the second support roller 41 (i.e., the cantilever 200 is not drooping at this time). At this time, the control module 50 controls the drive motor 21 to drive the second support roller 41 back to the initial position, thereby realizing closed-loop dynamic support for the cantilever 200. This allows the cantilever support device to adapt to cantilevers with different loads, thus improving the adaptability of the cantilever support device.

[0059] Step S5: Repeat steps S2 to S4 to enable the cantilever support device to dynamically support the cantilever 200.

[0060] Furthermore, the control method in this embodiment also includes: The control module 50 monitors the disconnection duration of the detection circuit in real time. When the disconnection duration of the detection circuit exceeds the preset duration, the control module 50 cuts off the power supply to the drive motor 21 and issues an alarm.

[0061] Specifically, in this embodiment, the preset duration is set to 4 to 6 seconds, preferably 5 seconds. When the control module 50 detects that the disconnection time of the detection circuit exceeds 5 seconds, the control module 50 activates a buzzer (not shown in the figure) to sound an alarm and cuts off the power supply to the drive motor 21 to prevent the fault from escalating and improve the safety of the cantilever support device.

[0062] Preferably, the control method in this embodiment further includes: The control module 50 detects in real time the upward movement distance of the second support roller 41 along the height direction of the main body 10. When the movement distance exceeds the preset distance and the detection circuit is still in the open state, the control module 50 cuts off the power to the drive motor 21 and issues an alarm.

[0063] Specifically, in this embodiment, the preset distance is set to 48mm to 52mm, preferably 50mm. The control module 50 monitors the lifting stroke of the second support roller 41 in real time through pulse counting to obtain the upward movement distance of the second support roller 41 along the height direction of the main body 10. When the movement distance exceeds 50mm, the power supply of the drive motor 21 is cut off and an alarm is issued.

[0064] In this embodiment, when the second support roller 41 is raised more than 50mm but the detection circuit remains disconnected, abnormal conditions such as cantilever 200 position deviation or cantilever support device alignment failure may occur. At this time, the control module 50 automatically cuts off the power to the drive motor 21 and issues an alarm. This avoids mechanical overload, component damage, or lifting jamming caused by excessive raising of the second support roller 41. The synchronously triggered alarm signal can promptly remind personnel to troubleshoot the fault, significantly reducing the risk of equipment downtime due to continuous operation under abnormal conditions and ensuring the safety and reliability of the device operation. This embodiment uses a pulse counting stroke monitoring method, which provides accurate and efficient detection results. It eliminates the need for additional complex displacement sensors, reducing costs and simplifying the detection and control process of the cantilever support device.

[0065] Optionally, when controlling the cantilever support device in this embodiment, the cantilever support device includes multiple operating conditions, specifically light load condition, heavy load condition, dynamic load switching condition, and fault emergency condition.

[0066] In some embodiments, when the load on the cantilever 200 is less than or equal to 50 kg, the cantilever support device is in a light load condition. At this time, the control flow of the cantilever support device is as follows: After the cantilever support device is initialized, the first support roller 31 is in close contact with the outer wall of the cantilever 200, and the detection circuit is connected. Assuming that the load at the front end of the cantilever is 30 kg, when the front end of the cantilever is loaded with a 30 kg weight, the front end of the cantilever sags slightly, the first support roller 31 separates from the cantilever 200, the detection circuit is disconnected, and the control module 50 immediately starts the drive motor 21 within a time of less than or equal to 0.1 s when the detection circuit is disconnected. The drive motor 21 drives the second support roller 41 to lift at a speed of 5 mm / s. After the lifting stroke is 8 mm, the detection circuit is connected, the drive motor 21 stops running, and the cantilever 200 returns to a horizontal state.

[0067] In some embodiments, when the load on the cantilever 20 is greater than 50kg, the cantilever support device is in a heavy-load condition. At this time, the control flow of the cantilever support device is as follows: After the cantilever support device is initialized, the first support roller 31 is in close contact with the outer wall of the cantilever 200, and the detection circuit is connected; assuming the load at the front end of the cantilever is 100kg, when the front end of the cantilever is loaded with a 100kg weight, the sag of the front end of the cantilever increases, the first roller 21 is quickly separated from the cantilever 200, the detection circuit is disconnected, the control module 50 controls the drive motor 21 to accelerate, the second support roller 41 is lifted at a speed of 8mm / s, and after the lifting stroke is 15mm, the detection circuit is connected, the drive motor 21 stops running, and the cantilever 200 returns to a horizontal state.

[0068] In some embodiments, when the load at the cantilever front end of the cantilever 200 changes from 30kg to 100kg, the control flow of the location support device is as follows: when the initial load is 30kg, the cantilever support device completes the first adjustment; after the load increases to 100kg, the cantilever front end droops again, the detection circuit is disconnected for the second time, the drive motor 21 starts again, and stops after raising the load by 7mm. The entire response time during this process is ≤0.5s, which can quickly achieve dynamic load adaptive adjustment.

[0069] In some embodiments, the control process of the cantilever support device in fault emergency condition includes: when the detection circuit disconnection time exceeds a preset duration or the sag exceeds a preset threshold, the control module 50 issues an alarm signal and controls the drive motor 21 to stop running to avoid excessive lifting and structural damage; if the detection circuit is frequently switched on and off, for example, due to vibration interference, the control module 50 starts the delay protection module to perform a delay judgment, setting a delay judgment of 0.2s to avoid frequent start and stop of the drive motor 21.

[0070] Based on the above embodiments, the cantilever support device and its control method of this application can achieve rapid and accurate correction under different load conditions, with an adjustment response time ≤0.5s and a correction accuracy error of ±0.1mm; and can be adapted to cylindrical long cantilever with a diameter of 50-200mm and a length of 5-10m, and can work continuously for 5000 hours without failure. The cantilever support device has a compact structure and strong anti-interference ability, and can meet the usage requirements under dynamic loads and harsh working conditions.

[0071] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: (1) The cantilever support device of this application can achieve symmetrical clamping of cantilever structures of different shapes, such as cylindrical long cantilever, through the structure of the first support roller and the second support roller, and can fit tightly and is not easy to slip off, with good adaptability; the elastic support component can ensure the reliability of contact between the first support roller and the cantilever, and avoid false detection caused by vibration. (2) The contact-type power-on detection circuit replaces the complex sensor, which has a simple structure, can reduce the cost by more than 60%, has strong anti-interference ability, can still work stably under dust and vibration conditions, and has a simple detection logic. (3) It can realize the closed-loop control logic of "detection → drive → reset" and is fully automated. It has a short response time, small correction accuracy error, and can respond to dynamic load changes and adjustment response lag in real time.

[0072] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0073] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0074] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cantilever support device, characterized in that, include: The support mechanism includes a main body (10) and a drive assembly (20). The support clearance through hole (11) extends along the width direction of the main body (10). The main body (10) is provided with the support clearance through hole (11). The drive assembly (20) is fixedly disposed at the bottom of the support clearance through hole (11). The top of the support clearance through hole (11) is provided with a first support member (30) fixedly connected to the main body (10). The top of the drive assembly (20) is provided with a second support member (40). The control module (50) is electrically connected to the first support component (30) and the drive assembly (20) respectively. The control module (50) is used to detect the on / off signal between the first support component (30) and the cantilever (200), and control the drive assembly (20) to drive the second support component (40) to move along the height direction of the main body (10) according to the on / off signal.

2. The cantilever support device according to claim 1, characterized in that, The drive assembly (20) includes a drive motor (21), a reduction transmission structure (22), and a lifting plate (23). The drive motor (21) is driven to the lifting plate (23) through the reduction transmission structure (22) to drive the lifting plate (23) to move along the height direction of the main body (10). The second support member (40) is fixedly connected to the top of the lifting plate (23).

3. The cantilever support device according to claim 2, characterized in that, The speed reduction transmission structure (22) includes a transmission rod (221), a planetary reducer (222), and a screw jack (223). One end of the transmission rod (221) is driven to the drive motor (21) through the planetary reducer (222), and the other end of the transmission rod (221) is driven to the screw jack (223). The screw jack (223) is provided with a lifting part (2231) that can move along the height direction of the main body (10) under the drive of the transmission rod (221). The lifting part (2231) is fixedly connected to the bottom of the lifting plate (23).

4. The cantilever support device according to claim 3, characterized in that, The reduction transmission structure (22) includes two components. Along the length of the lifting plate (23), the two reduction transmission structures (22) are located on both sides of the drive motor (21) and are both disposed at the bottom of the lifting plate (23); and / or, The second support component (40) includes two second rollers (41). Along the length of the lifting plate (23), the two second rollers (41) are located at both ends of the lifting plate (23) and are fixedly connected to the top of the lifting plate (23).

5. The cantilever support device according to any one of claims 1 to 4, characterized in that, The first support component (30) includes two first rollers (31), both of which are located at the top of the support clearance through hole (11) and are fixedly connected to the main body (10); A conductive ring (311) is provided on the outer surface of the first support roller (31), and a conductive terminal (312) is provided on the conductive ring (311). The conductive terminal (312) on each of the first support rollers (31) is electrically connected to the control module (50). The control module (50) is electrically connected to the outer wall of the cantilever. A detection circuit is formed between the control module (50), the conductive ring (311), the conductive terminal (312), and the outer wall of the cantilever (200).

6. The cantilever support device according to claim 5, characterized in that, The support mechanism further includes an elastic support component (60), which includes a bracket (61) and an elastic connecting component (62). The first support roller (31) is rotatably connected to the bracket (61). The bracket (61) is inserted into the main body (10) through the elastic connecting component (62) and can move relative to the main body (10) along the height direction of the main body (10).

7. A control method for a cantilever support device, applicable to the cantilever support device according to any one of claims 1 to 6, characterized in that, The control method includes: Step S1: Start the control module (50) and initialize the cantilever support device, and control the first support roller (31) to contact the outer wall of the cantilever (200) to connect the detection circuit; Step S2: The control module (50) acquires the on / off signal of the detection circuit in real time. When the front end of the cantilever deforms downward along the height direction of the main body (10) under the action of the load, causing the first support roller (31) to separate from the outer wall of the cantilever (200), the detection circuit is disconnected, and the control module (50) receives the disconnection signal of the detection circuit. Step S3: The control module (50) controls the drive motor (21) to be powered on and run. Through the drive motor (21) and the reduction transmission structure (22), the second support roller (41) is controlled to move upward along the height direction of the main body (10), so that the second support roller (41) moves to contact the outer wall of the cantilever (200) and continues to move along the height direction of the main body (10) to lift the cantilever (200). Step S4: When the second support roller (41) raises the cantilever (200) to a horizontal state so that the first support roller (31) contacts the outer wall of the cantilever (200), the detection circuit is turned on, the control module (50) receives the turn-on signal of the detection circuit, controls the drive motor (21) to stop running and initializes the cantilever support device; Step S5: Repeat steps S2 to S4 to enable the cantilever support device to dynamically support the cantilever (200).

8. The control method for the cantilever support device according to claim 7, characterized in that, The on / off signal is configured as a voltage signal of the detection circuit, wherein: When the voltage signal of the detection circuit is high, the detection circuit is in an open state; When the voltage signal of the detection circuit is low, the detection circuit is in the ON state.

9. The control method for the cantilever support device according to claim 7, characterized in that, The steps for initializing the cantilever support device include: The control module (50) sends a reset signal to the drive motor (21) so that the drive motor (21) and the reduction transmission structure (22) control the second support roller (41) to move downward along the height direction of the main body (10) to the lowest position.

10. The control method for the cantilever support device according to claim 7, characterized in that, The control method further includes: The control module (50) monitors the disconnection duration of the detection circuit in real time. When the disconnection duration exceeds a preset duration, the control module (50) cuts off the power to the drive motor (21) and issues an alarm; and / or, The control module (50) detects in real time the movement distance of the second support roller (41) moving upward along the height direction of the main body (10). When the movement distance exceeds the preset distance and the detection circuit is still in the disconnected state, the control module (50) cuts off the power supply of the drive motor (21) and issues an alarm.

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