Anti-misoperation mechanism
By incorporating a sliding design with warning signs and limit components on the low-voltage switch, the limitations of using signage to prevent misoperation are overcome. This enables intelligent control of the handle's rotation path, preventing misoperation and enhancing safety and flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-05
- Publication Date
- 2026-03-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing technology of preventing the misoperation of low-voltage switches by hanging signs has limitations. It is easy for misoperation to occur due to the lack of signs or obstruction, which may lead to safety accidents.
The design combines warning signs and limit components. The slide is divided into warning and safety zones. The limit components control the rotation path of the handle. Combined with detachable installation and hydraulic drive, it provides visual cues and mechanical obstruction.
It enables intelligent control of the handle rotation path, preventing misoperation, while enhancing the operator's safety awareness, reducing the risk of accidents, and improving the flexibility and reliability of the equipment.
Smart Images
Figure CN121726257A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electrical equipment protection, in particular to a misoperation prevention mechanism. BACKGROUND
[0002] In the power distribution system of the mechanical field, the normal operation of the low-voltage cabinet drawer type outgoing line circuit switch is crucial to the stability of power supply. With the continuous growth of power demand and the increasing complexity of the power distribution system, the safe and reliable operation of the low-voltage switch has become a key factor to ensure the power supply and equipment safety. The low-voltage switch will face various situations in daily use, such as failure or the need for maintenance, which requires effective prevention of misoperation in these special situations to avoid damage to the power system and related equipment. Good misoperation prevention measures not only improve the reliability of the power system, but also reduce the safety hazards and economic losses caused by misoperation, which has an important influence on the development of the entire power industry.
[0003] At present, when the low-voltage cabinet drawer type outgoing line circuit switch of the power distribution room is in normal use, it is in the closed state, and when it cannot be used due to failure or needs to be repaired, the on-site electrician will hang a "under repair, please do not close" sign at the outgoing line circuit to prevent other personnel from misoperation. This method is a conventional warning method formed by the power industry for a long time, which can remind relevant personnel to pay attention to the state of the switch to a certain extent. At the same time, the use of such signs is simple and convenient, and the cost is relatively low, without the need for complex equipment and operation process, easy to implement on site.
[0004] However, this conventional method of preventing misoperation by hanging signs has certain limitations. When the equipment is being repaired, other workers may not see the warning sign or the warning sign may be blocked, at which time the workers may pull the handle or mistakenly touch the switch handle to close, resulting in a safety accident. SUMMARY
[0005] In order to be able to warn workers while preventing workers from mistakenly touching the switch handle to close during maintenance, the purpose of the present application is to provide a misoperation prevention mechanism, which adopts the following technical solution: It comprises a warning sign and a limiting component; The warning sign is fixedly arranged beside the handle, and the warning sign is provided with a sliding groove, which is divided into two areas along the length direction, the warning area near the handle and the safety area away from the handle; The limiting component is arranged in the sliding groove at one end and extends out of the sliding groove to the outside and protrudes out of the surface of the warning sign at the other end, and the limiting component is in sliding connection with the sliding groove; When the limiting assembly slides to the warning area, the limiting assembly protrusion is located on the rotating path of the handle to block the rotation of the handle; when the limiting assembly slides to the safe area, the limiting assembly protrusion is separated from the rotating path of the handle.
[0006] By adopting the above technical solution, the chute is divided into a warning area and a safe area, and the sliding design of the limiting assembly is combined to realize intelligent control of the rotating path of the handle. When the limiting assembly is located in the warning area, its protrusion physically blocks the rotation of the handle to prevent misoperation, and at the same time, the warning board provides intuitive visual cues to enhance the safety awareness of the operator; when the limiting assembly slides to the safe area, the protrusion is separated from the handle path to allow normal operation, so as to balance the operation flexibility while ensuring safety, which is suitable for high-risk environments such as power distribution rooms, and effectively reduces the risk of accidents caused by human error.
[0007] Optionally, the warning board is provided with a mounting positioning hole, and the mounting positioning hole detachably fixes the warning board on the power distribution room through a bolt.
[0008] By adopting the above technical solution, the installation convenience and maintainability of the mechanism are improved, the bolt connection mode ensures the stable installation of the warning board, avoids displacement due to vibration or external force, and at the same time, the detachable design facilitates the adjustment or replacement of parts in the later period, reduces the maintenance time and cost, enhances the adaptability and durability of the overall mechanism, and is especially suitable for industrial scenes that need to be frequently checked or modified.
[0009] Optionally, the chute extends downward to a limiting groove in the downward direction of the warning area and the safe area, and the limiting groove and the chute form an inverted concave-shaped channel for positioning the sliding block.
[0010] By adopting the above technical solution, the movement stability and positioning accuracy of the sliding block are enhanced, the limiting groove serves as a guide structure to prevent the sliding block from falling out or deviating during sliding, and ensures that the limiting assembly always moves along the predetermined path, thereby reliably realizing the function of blocking or releasing the handle. This design simplifies the operation process, reduces the failure caused by mispositioning of the components, and improves the safety and service life of the mechanism.
[0011] Optionally, the warning board is provided with an abutting plate, the abutting plate is located between the warning area and the safe area, the abutting plate has an abutting surface for contacting the limiting assembly to limit the sliding of the limiting assembly.
[0012] By adopting the above technical solution, an explicit sliding stop point is provided, the abutting surface contacts the limiting assembly to effectively limit the sliding range of the limiting assembly, prevent it from moving excessively beyond the designed area, ensure that the limiting assembly can only switch between the warning area and the safe area, and avoid misoperation or component damage. At the same time, the abutting plate structure is simple, easy to manufacture and install, and enhances the reliability and user experience of the mechanism.
[0013] Optionally, the limiting assembly comprises a sliding block, a limiting block and a telescopic member, the sliding block is provided with a groove, the opening direction of the groove is perpendicular to the length direction of the sliding groove, the limiting block is slidably arranged in the groove, and the telescopic member is arranged between the bottom of the groove and the limiting block and used for driving the limiting block to extend out of or retract into the groove.
[0014] By adopting the above technical scheme, the telescopic member drives the limiting block to extend or retract in the groove, the adjustability of the limiting assembly is realized, the limiting block can extend out to block the handle or retract to release the path as needed, the design improves the flexibility and adaptability of the mechanism, is suitable for different operation scenes, the sliding connection of the sliding block and the sliding groove ensures smooth movement, reduces friction and wear, and prolongs the service life of the mechanism.
[0015] Optionally, the telescopic member comprises a spring, and the spring is used to provide elastic force to the limiting block to enable the limiting block to slide in the groove.
[0016] By adopting the above technical scheme, the limiting block is driven by the mechanical elastic force of the spring, the structure is simple, the cost is low, and the reliability is high, the continuous elastic force provided by the spring ensures that the limiting block remains in a stable state without external force, the dependence on electricity or a complex control system is reduced, the mechanism is suitable for harsh environments, the spring is easy to replace and maintain, the operating cost is reduced, and the economy and practicality of the mechanism are improved.
[0017] Optionally, the abutting surface is provided with a buffer ring made of elastic material.
[0018] By adopting the above technical scheme, the buffer ring made of elastic material absorbs impact energy when the limiting block contacts, reduces noise and vibration, prevents component damage or deformation caused by hard contact, prolongs the service life of the abutting plate and the limiting block, provides a softer stop experience, improves the operation comfort, is especially suitable for industrial equipment used frequently, and enhances the overall durability and safety.
[0019] Optionally, the telescopic member comprises a first hydraulic telescopic member, the cylinder body of the first hydraulic telescopic member is fixedly connected with the bottom of the groove, and the output end of the first hydraulic telescopic member is fixedly connected with the limiting block and used for driving the limiting block to extend or retract.
[0020] By adopting the above technical scheme, the hydraulic telescopic member provides smooth and controllable linear motion, allows accurate control of the extension and retraction speed and position of the limiting block, is suitable for application scenes requiring high precision and stability, such as automation systems, the hydraulic drive has strong load capacity, ensures that the limiting block reliably blocks the handle, and the hydraulic system can be integrated into a larger control network to realize remote monitoring and adjustment, and improves the intelligence and automation level of the mechanism.
[0021] Optionally, the warning board is further provided with a second hydraulic telescopic member, the output end of the second hydraulic telescopic member is fixedly connected with the sliding block, and the second hydraulic telescopic member is used to drive the sliding block to slide in the sliding groove.
[0022] By adopting the above technical scheme, the automatic movement of the sliding block is realized, manual intervention is reduced, operation efficiency and consistency are improved, the second hydraulic telescopic member can be programmed and controlled, the limiting component can be quickly and accurately switched between the warning area and the safety area, and the second hydraulic telescopic member is particularly suitable for emergency situations or remote operation. Meanwhile, the hydraulic drive provides sufficient thrust to ensure smooth movement of the sliding block in the sliding groove, avoids jamming or misoperation, and enhances the response speed and reliability of the mechanism.
[0023] Optionally, the warning board is further provided with a distance measuring sensor, and the distance measuring sensor is provided with two, which are respectively located at the warning area end and the safety area end of the sliding groove, and are used to detect the position signal of the sliding block.
[0024] By adopting the above technical scheme, the position of the sliding block in the sliding groove is monitored in real time through the distance measuring sensor, accurate signal feedback is provided, and the distance measuring sensor is integrated into the control system for automatic management, for example, triggering an alarm or a locking mechanism when the sliding block is located in the warning area, further preventing misoperation. The distance measuring sensor design improves the intelligence of the mechanism, allows remote state monitoring and log recording, provides data support for preventive maintenance, and thus improves the overall safety and operation efficiency.
[0025] In summary, the present application has at least one of the following beneficial technical effects: 1. The sliding groove is divided into a warning area and a safety area, and the sliding design of the limiting component is combined to realize intelligent control of the handle rotation path. When the limiting component is located in the warning area, the protruding part physically blocks the handle rotation to prevent misoperation, and the warning board provides intuitive visual prompts to enhance the safety awareness of the operator. When the limiting component slides to the safety area, the protruding part is separated from the handle path to allow normal operation, so as to ensure safety while considering operation flexibility, which is suitable for high-risk environments such as power distribution rooms, and effectively reduces the risk of accidents caused by human error; 2. The inverted concave-shaped limiting groove design ensures the precision and stability of the movement of the sliding component; the detachable installation method is convenient for maintenance and adjustment; and the introduction of the abutting plate and the buffer ring effectively limits the movement range and buffers the impact, reduces the wear and noise of the components. These detailed optimizations not only prolong the service life of the mechanism, reduce maintenance costs, but also make the operation process smoother and more reliable; 3. The hydraulic telescopic component provides a smooth and powerful driving force for the extension and retraction of the limit block and the sliding of the slider, achieving precise control. The addition of a position and distance sensor allows the mechanism's status to be monitored in real time and fed back to the control system, thus elevating simple mechanical error prevention to an integrated intelligent safety solution. Attached Figure Description
[0026] Figure 1 This is a front view schematic diagram of the anti-misoperation mechanism in Embodiment 1; Figure 2 This is a top view of the anti-misoperation mechanism in Embodiment 1; Figure 3 This is a front view schematic diagram of the anti-misoperation mechanism in Embodiment 2; Figure 4 This is a schematic diagram of the cross-sectional structure of the anti-misoperation mechanism in Example 2; Figure 5 This is a schematic diagram of the cross-sectional structure of the anti-misoperation mechanism in Example 3; Figure 6 This is a front sectional view of the anti-misoperation mechanism in Embodiment 3; In the picture, 1. Warning sign; 11. Mounting positioning hole; 12. Slide groove; 13. Warning area; 14. Safety area; 15. Limiting groove; 16. Abutment plate; 2. Limiting component, 21. Slider, 211. Groove, 22. Limiting block, 23. Telescopic component, 231. Spring, 232. First hydraulic telescopic component; 3. Second hydraulic telescopic component; 4. Handle. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.
[0028] Example 1 A mechanism to prevent misoperation, referring to Figure 1 and Figure 2 The device includes a warning sign 1 and a limiting component 2. The warning sign 1 is fixedly installed on the side of the handle 4. One end of the limiting component 2 is installed in the slide groove 12 of the warning sign 1 and is slidably connected to the slide groove 12. The other end extends out of the slide groove 12 to the outside and protrudes from the outer surface of the warning sign 1. This arrangement allows the limiting component 2 to slide in the slide groove 12, thereby limiting the rotation of the switch handle 4 according to its position and avoiding accidental operation.
[0029] The warning sign 1 has a slide groove 12, which is divided into two areas along its length: a warning area 13 closer to the handle 4 and a safety area 14 further away from the handle 4. Both areas have warning signs: the sign in the warning area 13 reads "Normal Use," and the sign in the safety area 14 reads "Under Maintenance, Do Not Close the Circuit." When the limit component 2 slides into the safety area 14, it blocks the sign in the safety area, thus displaying the sign in the warning area 13, indicating "Normal Use," and the protrusion is disengaged from the handle 4 path, allowing normal operation.
[0030] Similarly, refer to Figure 2 When the limit component 2 slides to the warning zone 13, the limit component 2 will block the sign in the warning zone 13, thereby displaying the sign in the safety zone 14, that is, under maintenance, do not close the circuit. At the same time, when the limit component 2 moves to the warning zone 13, it will restrict the rotation of the switch handle 4. The protrusion of the limit component 2 physically blocks the rotation of the handle 4 to prevent misoperation. Meanwhile, the warning sign 1 provides intuitive visual prompts to enhance the safety awareness of the operators.
[0031] Furthermore, refer to Figure 1 The warning sign 1 is provided with mounting holes 11, which are used to detachably fix the warning sign 1 to the power distribution room via bolts. This detachable design facilitates the installation and removal of the warning sign 1, making it easier for later maintenance and replacement. The shape of the mounting holes 11 can be circular or elliptical to adapt to different installation requirements.
[0032] Furthermore, the slide 12 can be made of metal to ensure its strength and wear resistance, or it can be made of high-strength plastic to reduce costs while meeting usage requirements. The slide 12 extends downwards into limiting grooves 15 below the warning area 13 and the safety area 14, forming an inverted U-shaped channel with the slide 12 for positioning the limiting component 2. Correspondingly, a protruding plate is provided on the edge of the limiting component 2 located within the slide 12 to secure the limiting component 2 within the slide 12, preventing it from falling out during movement.
[0033] When the equipment needs maintenance, the worker can first move the limiting component 2, located in the limiting groove 15 below the safety zone 14, upwards, then move it laterally to the warning zone 13, and finally place it in the limiting groove 15 below the warning zone 13. The limiting component 2 will stop in the limiting groove 15 due to its own weight. The handle 4 of the equipment rotates laterally. Even if the handle 4 is accidentally touched or pulled by the worker, it will be blocked by the limiting component 2 when it rotates. Since the limiting component 2 is in the limiting groove 15 and cannot move laterally, it will be blocked by the raised part next to it, thus playing a lateral limiting role. Therefore, even if the handle 4 rotates, it will be blocked by the limiting component 2.
[0034] The implementation principle of this application embodiment is as follows: by fixing the warning sign 1 to the side of the handle 4, the limiting component 2 is used to control the restriction on the rotation of the switch handle 4 by sliding within the slide groove 12. When the switch is in maintenance mode, the limiting component 2 is slid to the warning zone 13, and the protrusion of the limiting component 2 blocks the rotation of the handle 4, preventing the faulty switch from closing; when the switch is in normal use, the limiting component 2 is slid to the safety zone 14, and the switch handle 4 can be operated normally. This design fundamentally eliminates the possibility of misoperation. At the same time, the detachable design of the mounting positioning hole 11 facilitates maintenance and replacement. The reasonable arrangement and cooperation of each component improves the stability and reliability of the device. Compared with the prior art, it can more effectively ensure the safe operation of the power system.
[0035] Example 2 The difference between this embodiment and the above embodiments is that: (Refer to...) Figure 3 The slide 12 is a straight channel with a transition area between the warning area 13 and the safety area 14. An abutment plate 16 is installed on the warning sign 1, located between the warning area 13 and the safety area 14. The abutment plate 16 has an abutment surface, providing a clear sliding stop point. When the limiting component 2 is moved to the warning area 13, the limiting component 2 contacts the abutment surface, thereby limiting the sliding of the limiting component 2. A buffer ring is also provided on the abutment surface. The buffer ring is made of elastic material. When the limiting block 22 contacts, the buffer ring absorbs impact energy, reduces noise and vibration, prevents component damage or deformation caused by hard contact, and extends the service life of the abutment plate 16 and the limiting block 22. At the same time, the buffer ring provides a softer stopping experience, improving operational comfort. It is particularly suitable for industrial equipment used frequently, enhancing overall durability and safety.
[0036] Furthermore, refer to Figure 4 The limiting component 2 includes a slider 21, a limiting block 22, and a telescopic member 23. The slider 21 has a groove 211, the opening of which is perpendicular to the length direction of the slide groove 12. The limiting block 22 is slidably disposed within the groove 211. The slider 21 can be rectangular or cylindrical, as long as it can slide smoothly within the slide groove 12. The slider 21 can be made of aluminum alloy, which has a lighter weight and better strength, or it can be made of stainless steel, which is more corrosion-resistant.
[0037] Furthermore, refer to Figure 4The telescopic component 23 is disposed between the bottom of the groove 211 and the limiting block 22, and is used to drive the limiting block 22 to extend or retract from the groove 211. The telescopic component 23 can take various forms, such as a spring 231. The spring 231 provides elastic force to the limiting block 22 to make the limiting block 22 slide within the groove 211. The spring 231 can be a compression spring 231, and its elastic coefficient can be adjusted according to actual needs. The spring 231 as the telescopic component 23 has a simple structure, low cost, and can provide elastic force to the limiting block 22 to make it slide within the groove 211.
[0038] When the equipment needs maintenance, the worker first presses the limit block 22 on the limit assembly 2 located in the safety zone 14 into the groove 211 of the slider 21, and then drives the slider 21 to slide through the intermediate transition area to the warning zone 13. The abutment plate 16 of the transition area is also provided with a channel that allows the worker's fingers to slide. When the slider 21 reaches the safety zone 14, the worker releases his fingers, and the limit block 22 is popped out by the squeezed spring 231. At this time, the limit block 22 is exactly in the path of the handle 4, preventing the handle 4 from moving.
[0039] The implementation principle of this embodiment is as follows: Spring 231, acting as a telescopic component 23, can meet the telescopic requirements of the limiting block 22, reducing the cost of the device while ensuring the anti-misoperation function. Due to the elastic characteristics of spring 231, it can play a buffering and resetting role during the sliding process of the limiting component 2, improving the service life and stability of the device, and effectively preventing misoperation and ensuring the safety of the power system. At the same time, the limiting block 22 relies on the abutment plate 16 to abut, thereby achieving the limiting function and blocking the movement of the handle 4.
[0040] Example 3 The difference between this embodiment and the above embodiments is that: (Refer to...) Figure 5 The telescopic component 23 can also be a first hydraulic telescopic component 232. The cylinder of the first hydraulic telescopic component 232 is fixedly connected to the bottom of the groove 211. Alternatively, the cylinder of the first hydraulic telescopic component 232 can be embedded in the bottom of the slider. The output end of the first hydraulic telescopic component 232 is fixedly connected to the limiting block 22 for driving the limiting block 22 to extend and retract. The first hydraulic telescopic component 232 can provide more precise driving force, making the extension and retraction of the limiting block 22 more stable.
[0041] Furthermore, refer to Figure 6A second hydraulic telescopic component 3 is also provided on the warning sign 1. The second hydraulic telescopic component 3 is located on the side of the warning sign 1, and its output end is fixedly connected to the slider 21. The second hydraulic telescopic component 3 is used to drive the slider 21 to slide within the slide groove 12. The second hydraulic telescopic component 3 can provide a stable driving force, making the sliding of the slider 21 more smooth and precise. The second hydraulic telescopic component 3 can be a single-acting hydraulic cylinder or a double-acting hydraulic cylinder, depending on the actual needs.
[0042] Furthermore, two distance sensors are provided, located at the warning zone 13 end and the safety zone 14 end of the slide 12 respectively, for detecting the position signal of the slider 21. The distance sensors can detect the position of the slider 21 in a timely and accurate manner, providing a basis for subsequent operations. The distance sensors can be photoelectric sensors or proximity sensors, both of which can effectively detect the position of the slider 21.
[0043] When the equipment needs maintenance, the worker presses the limit block 22 located in the safety zone 14. At this time, the limit block 22 will enter the groove 211. At the moment of pressing, the signal of the first hydraulic telescopic component 232 is fed back to the control center. The control center then controls the second hydraulic telescopic component 3 to work. The slider 21 slides in the slide groove 12 under the drive of the second hydraulic telescopic component 3. The slider 21 slides to the warning zone 13. When the distance sensor located in the warning zone 13 senses that the slider 21 is approaching and has reached the designated position, it feeds back the signal to the control center to control the first hydraulic telescopic component 232. 2. During operation, the second hydraulic telescopic component 3 stops extending and retracting, and the first hydraulic telescopic component 232 pushes the limit block 22 out of the groove 211. The protrusion is located on the rotation path of the handle 4 to block the rotation of the handle 4. At this time, the switch cannot be closed, which plays a role in preventing misoperation. Similarly, when the worker presses the limit block 22 located in the warning area 13, the slider 21 will slide to the safety area 14 through the second hydraulic telescopic component 3. The limit block 22 will then be pushed out by the first hydraulic telescopic component 232. At this time, the limit block 22 is separated from the rotation path of the handle 4, and the switch handle 4 can be operated normally.
[0044] The implementation principle of this application embodiment is as follows: the first hydraulic telescopic component 232, the second hydraulic telescopic component 3 and the control center cooperate with each other to realize the automated operation of the limit component 2, which is convenient for workers to use and can also play a good role in preventing misoperation. At the same time, the warning sign 1 provides intuitive visual prompts to enhance the safety awareness of operators.
[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A mechanism for preventing misoperation, characterized in that, Includes warning signs (1) and limit components (2); The warning sign (1) is fixedly installed on the side of the handle (4). The warning sign (1) is provided with a slide groove (12). The slide groove (12) is divided into two areas along the length direction. The area closer to the handle (4) is the warning area (13), and the area further away from the handle (4) is the safety area (14). One end of the limiting component (2) is disposed in the slide groove (12), and the other end extends out of the slide groove (12) to the outside and protrudes from the outer surface of the warning sign (1). The limiting component (2) is slidably connected to the slide groove (12). When the limiting component (2) slides to the warning area (13), the protrusion of the limiting component (2) is located on the rotation path of the handle (4) to block the rotation of the handle (4); when the limiting component (2) slides to the safety area (14), the protrusion of the limiting component (2) disengages from the rotation path of the handle (4).
2. The anti-misoperation mechanism according to claim 1, characterized in that, The warning sign (1) is provided with a mounting positioning hole (11), and the mounting positioning hole (11) is used to detachably fix the warning sign (1) to the power distribution room by bolts.
3. The anti-misoperation mechanism according to claim 1, characterized in that, The slide (12) extends downward in the direction of the warning area (13) and the safety area (14) respectively to form a limiting groove (15), which is used to position the slider (21).
4. The anti-misoperation mechanism according to claim 1, characterized in that, The warning sign (1) is provided with an abutment plate (16), which is located between the warning area (13) and the safety area (14). The abutment plate (16) has an abutment surface for contacting the limiting component (2) to restrict the sliding of the limiting component (2).
5. The anti-misoperation mechanism according to claim 4, characterized in that, The limiting component (2) includes a slider (21), a limiting block (22), and a telescopic component (23). The slider (21) is provided with a groove (211), the opening direction of the groove (211) is perpendicular to the length direction of the slide groove (12), the limiting block (22) is slidably disposed in the groove (211), and the telescopic component (23) is disposed between the bottom of the groove (211) and the limiting block (22) for driving the limiting block (22) to extend or retract from the groove (211).
6. The anti-misoperation mechanism according to claim 5, characterized in that, The telescopic member (23) includes a spring (231) for providing elastic force to the limiting block (22) to allow the limiting block (22) to slide within the groove (211).
7. The anti-misoperation mechanism according to claim 6, characterized in that, A buffer ring, made of elastic material, is provided on the contact surface.
8. The anti-misoperation mechanism according to claim 5, characterized in that, The telescopic component (23) includes a first hydraulic telescopic component (232), the cylinder of the first hydraulic telescopic component (232) is fixedly connected to the bottom of the groove (211), and the output end of the first hydraulic telescopic component (232) is fixedly connected to the limiting block (22) for driving the limiting block (22) to extend and retract.
9. The anti-misoperation mechanism according to claim 5, characterized in that, The warning sign (1) is also provided with a second hydraulic telescopic component (3). The output end of the second hydraulic telescopic component (3) is fixedly connected to the slider (21). The second hydraulic telescopic component (3) is used to drive the slider (21) to slide in the groove (12).
10. The anti-misoperation mechanism according to claim 9, characterized in that, The warning sign (1) is also equipped with a distance sensor. There are two distance sensors, located at the warning area (13) end and the safety area (14) end of the slide (12) respectively, for detecting the position signal of the slider (21).