Safety warning device and power equipment

Abstract

This application relates to a safety warning device and a power equipment, which can solve the problem of false alarms of warning lights when the power equipment is normally stopped and resting in the prior art. The safety warning device includes a mounting body, a warning mechanism, and a switching mechanism. The mounting body is used to connect to the door frame of the power equipment. The switching mechanism is connected to the mounting body and electrically connected to the warning mechanism. The switching mechanism includes a movable part, which can move relative to the mounting body in a first direction and a second direction to trigger the warning mechanism to start or stop. When the maintenance door of the power equipment is opened, the movable part is pushed by the maintenance door and moves in the first direction until the warning mechanism is triggered to start. When the maintenance door is closed, the movable part is pushed by the maintenance door and moves in the second direction until the warning mechanism is triggered to stop.

Description

Technical Field

[0001] This application relates to the field of safety warning device technology, and in particular to a safety warning device and power equipment. Background Technology

[0002] After a certain period of operation, the power equipment in the tobacco production workshop requires regular maintenance, such as cleaning or troubleshooting. During maintenance, the parking switch on the power equipment is activated. To prevent the power equipment from being restarted during maintenance and causing injury to maintenance personnel, safety warnings must be given during the maintenance process.

[0003] In related technologies, a signal transmitter, a controller, and a warning light are typically installed on the power equipment. When the power equipment stops running, the signal transmitter immediately sends a signal to the controller, causing the controller to control the warning light to illuminate, thus achieving a warning effect.

[0004] However, the aforementioned power equipment will issue warnings during maintenance or normal shutdown, thus there is a problem of false alarms from the warning lights during normal shutdown. Utility Model Content

[0005] Therefore, it is necessary to provide a safety warning device and power equipment to address the problem of false alarms caused by warning lights when the aforementioned power equipment is normally stopped and resting.

[0006] On one hand, this application provides a safety warning device, which includes a mounting body, a warning mechanism, and a switching mechanism. The mounting body is used to connect to the door frame of a power equipment, and the switching mechanism is connected to the mounting body and electrically connected to the warning mechanism. The switching mechanism includes a movable member, which can move relative to the mounting body in a first direction and a second direction to trigger the warning mechanism to start or stop. When the maintenance door of the power equipment is opened, the movable member is pushed by the maintenance door and moves in the first direction until the warning mechanism is triggered to start. When the maintenance door is closed, the movable member is pushed by the maintenance door and moves in the second direction until the warning mechanism is triggered to stop.

[0007] In one embodiment, the switching mechanism includes a first trigger switch and a second trigger switch, which are spaced apart on the mounting body. The movable member is rotatably connected to the mounting body, and each end of the movable member has an abutment portion and a trigger portion. When the maintenance door of the power equipment is opened or closed, the abutment portion can be pushed by the maintenance door, so that the movable member rotates to the trigger portion to trigger the first trigger switch or the second trigger switch respectively.

[0008] In one embodiment, the safety warning device includes an arc-shaped base connected to the mounting body. The arc-shaped base has an arc-shaped groove. The first trigger switch and the second trigger switch are respectively disposed at both ends of the arc-shaped groove. The triggering part includes a linkage rod that passes through the arc-shaped groove and can slide along the arc-shaped groove to trigger the first trigger switch or the second trigger switch.

[0009] In one embodiment, the linkage is connected to an extension piece, the extension piece is nested in the linkage, the extension piece is disposed in the arc-shaped groove and can slide along the arc-shaped groove to trigger the first trigger switch or the second trigger switch.

[0010] In one embodiment, the abutment portion is provided with a reset mechanism for resetting the movable member to its initial position after rotation.

[0011] In one embodiment, the safety warning device further includes a toggle for connection to the maintenance door of the power equipment. At least a portion of the toggle is disposed opposite to the movable member. When the maintenance door is opened or closed, the maintenance door pushes the movable member to move via the toggle.

[0012] In one embodiment, the lever includes a connecting seat and a lever, the connecting seat being connected to the access door of the power equipment, the lever being detachably connected to the connecting seat, and at least a portion of the lever being disposed opposite to the movable member.

[0013] In one embodiment, the connecting seat is provided with a snap-fit ​​groove, the lever includes a snap-fit ​​part and a lever head that are connected to each other, the snap-fit ​​part is detachably snapped into the snap-fit ​​groove, and the lever head is disposed opposite to the movable part.

[0014] In one embodiment, the safety warning device further includes a graded alarm mechanism electrically connected to the switching mechanism, the graded alarm mechanism being configured to be triggered to start or stop simultaneously with the warning mechanism.

[0015] On the other hand, this application provides a power device including the above-mentioned safety warning device. The power device is provided with an inspection door and a door frame. The inspection door can be rotated to open or close relative to the door frame. The mounting body is connected to the door frame. When the inspection door is opened, the movable part is pushed by the inspection door and moves in the first direction until the warning mechanism is triggered to start. When the inspection door is closed, the movable part is pushed by the inspection door and moves in the second direction until the warning mechanism is triggered to stop.

[0016] The aforementioned safety warning device and power equipment, when the maintenance door of the power equipment is opened, the moving part is pushed by the maintenance door and moves in the first direction until the warning mechanism is triggered, thereby realizing the function of automatically issuing an alarm when the power equipment needs maintenance. When the maintenance door is closed, the moving part is pushed by the maintenance door and moves in the second direction until the warning mechanism is triggered to stop, thereby realizing the function of automatically ending the alarm when the power equipment is finished. In other words, after the current maintenance work is completed, the warning mechanism will only be triggered when the next maintenance work is started. This avoids the problem of false alarms of warning lights when the power equipment is normally stopped and resting, as in traditional technology, thus improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the power equipment in one embodiment of this application.

[0018] Figure 2 This is a partial structural schematic diagram of the power equipment in one embodiment of this application.

[0019] Figure 3 This is a partial structural schematic diagram of the power equipment in another embodiment of this application.

[0020] Figure 4 This is an exploded view of the pusher of the safety warning device in one embodiment of this application.

[0021] Figure 5 This is a schematic diagram of the switching mechanism of a safety warning device in one embodiment of this application.

[0022] Figure 6 for Figure 5 A magnified view of part of the structure of the safety warning device shown.

[0023] Explanation of icon numbers

[0024] X1, First direction; X2, Second direction; 10, Door frame; 20, Inspection door; 21, Top edge; 100, Mounting body; 110, Bottom surface; 200, Warning mechanism; 210, Warning light; 220, Warning screen; 230, Warning sound source; 300, Switching mechanism; 310, Moving part; 311, Abutting part; 312, Triggering part; 3121, Linking rod; 3122, Extension piece; 313, Rotating shaft; 320, First trigger switch; 330, Second trigger switch; 400, Graded alarm mechanism; 410, Cable; 500, Toggle piece; 510, Connecting seat; 511, Snap-fit ​​groove; 512, Adhesive part; 520, Toggle lever; 521, Snap-fit ​​part; 522, Lever head; 600, Reset mechanism; 700, Arc-shaped seat; 710, Arc-shaped groove. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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.

[0027] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0031] Considering that existing tobacco production workshops typically use warning lights (210) to illuminate immediately when the power equipment stops, this method suffers from false alarms when the equipment is normally idle, this application provides a safety warning device that ensures the power equipment only issues an alarm during maintenance, eliminating false alarms and facilitating its application and promotion.

[0032] Specifically, please refer to Figure 1 and Figure 2 One embodiment of this application provides a safety warning device, which may include a mounting body 100, a warning mechanism 200, and a switching mechanism 300. The mounting body 100 is used to connect to the door frame 10 of a power equipment. The switching mechanism 300 is connected to the mounting body 100 and electrically connected to the warning mechanism 200. The switching mechanism 300 includes a movable member 310, which can move relative to the mounting body 100 in a first direction X1 and a second direction X2 to trigger the warning mechanism 200 to start or stop. When the maintenance door 20 of the power equipment is opened, the movable member 310 is pushed by the maintenance door 20 and moves in the first direction X1 until the warning mechanism 200 is triggered to start. When the maintenance door 20 is closed, the movable member 310 is pushed by the maintenance door 20 and moves in the second direction X2 until the warning mechanism 200 is triggered to stop.

[0033] It should be noted that, in this application, the primary measure for determining whether maintenance work on power equipment has started or ended is whether the maintenance door 20 has been opened. Understandably, when the maintenance door 20 is opened, it signifies the start of maintenance work; when the maintenance door 20 is closed, it signifies the end of maintenance work.

[0034] It is worth noting that when the maintenance door 20 is opened, the movable part 310 is pushed by the maintenance door 20 and moves in the first direction X1. This means that the orientation of the movable part 310 at the instant it is pushed and displaced is the first direction X1, which is the same as the orientation when the maintenance door 20 is opened and abuts against and pushes the movable part 310. When the maintenance door 20 is closed, the movable part 310 is pushed by the maintenance door 20 and moves in the second direction X2. This means that the orientation of the movable part 310 at the instant it is pushed and displaced is the second direction X2, which is the same as the orientation when the maintenance door 20 is closed and abuts against and pushes the movable part 310.

[0035] It should be noted that when the access door 20 is opened, it can abut against the movable member 310 in the first direction X1 and can disengage from it under external force. When the access door 20 is closed, it can abut against the other side of the movable member 310 in the second direction X2 and push the movable member 310 to move, thus triggering and stopping the warning mechanism 200.

[0036] In the aforementioned safety warning device, when the maintenance door 20 of the power equipment is opened, the movable part 310 of the switching mechanism 300 is pushed by the maintenance door 20 and moves in the first direction X1 until the warning mechanism 200 is triggered and activated, thereby realizing the function of automatically issuing an alarm when the power equipment needs maintenance. When the maintenance door 20 is closed, the movable part 310 is pushed by the maintenance door 20 and moves in the second direction X2 until the warning mechanism 200 is triggered and stopped, thereby realizing the function of automatically ending the alarm when the power equipment is finished. In other words, after the current maintenance work is completed, the warning mechanism 200 will only be triggered and activated when the next maintenance work is started. This avoids the problem of false alarms of the warning light 210 when the power equipment is normally stopped and resting, as in traditional technology, thus improving the working efficiency of the safety warning device.

[0037] Optionally, please refer to Figure 1 and Figure 2The warning mechanism 200 may include, but is not limited to, a warning light 210, a warning screen 220, and a warning sound source 230. The warning light 210 is used to emit warning light, such as flashing lights with alternating colors, to visually alert personnel. The warning screen 220 is used to display warning messages to remind personnel, such as the words "under maintenance" displayed on the screen. The warning sound source 230 is used to play pre-recorded warning messages in a loop. According to this embodiment, users can combine different warning methods to improve the warning effect.

[0038] Optionally, please continue reading Figure 1 In some other embodiments, the safety warning device may also include a graded alarm mechanism 400, which is electrically connected to the switching mechanism 300. The graded alarm mechanism 400 is configured to be triggered to start or stop simultaneously with the warning mechanism 200, which helps to further increase the warning range and enhance the warning effect.

[0039] Specifically, the graded alarm mechanism 400 and the warning mechanism 200 can be respectively installed on different sides of the power equipment, so that they can also play a corresponding warning role in other locations besides the inspection door 20. Of course, the number of graded alarm mechanisms 400 can be set according to actual needs, such as 2, 3 or 4.

[0040] Optionally, the graded alarm mechanism 400 can be connected to the switch mechanism 300 via cable 410, thus ensuring the connection stability of the graded alarm mechanism 400.

[0041] It is worth noting that, according to the above embodiments of this application, the height of the movable member 310 can be set lower than the upper edge 21 of the access door 20, so that the access door 20 can abut against and push the movable member 310 during opening and closing. For example, as Figure 3 As shown, in one embodiment, the movable member 310 may protrude from the bottom surface 110 of the mounting body 100, such that the movable member 310 is positioned below the upper edge 21 of the access door 20.

[0042] Alternatively, in some other embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The safety warning device may also include a lever 500 for connection to the maintenance door 20 of the power equipment. At least a portion of the lever 500 is disposed opposite to the movable member 310. When the maintenance door 20 is opened or closed, the maintenance door 20 pushes the movable member 310 to move via the lever 500, which helps to improve the alignment accuracy of the maintenance door 20 with the movable member 310 during opening and closing.

[0043] Specifically, such as Figure 2 As shown, when the maintenance door 20 is closed, the toggle 500 can be arranged between the movable part 310 and the maintenance door 20. Then, when the maintenance door 20 is opened, the maintenance door 20 can drive the toggle 500 to push the movable part 310 to move. The movable part 310 moves relative to the mounting body 100 in the first direction X1, thus triggering the warning mechanism 200.

[0044] Understandably, in this embodiment, the toggle 500 may be configured to at least partially protrude from the upper edge 21 of the access door 20.

[0045] Users can choose to directly contact and push the movable part 310 through the inspection door 20, or add a lever 500 to contact and push the movable part 310, depending on their actual needs.

[0046] Preferably, see below. Figure 2 and Figure 3 In some embodiments, the lever 500 may include a connecting base 510 and a lever 520. The connecting base 510 is used to connect to the maintenance door 20 of the power equipment, and the lever 520 is detachably connected to the connecting base 510. At least a portion of the lever 520 is disposed opposite to the movable member 310. Thus, when it is necessary to stop the alarm function of the power equipment, the user can directly detach the lever 520 from the connecting base 510, thereby ensuring that the maintenance door 20 and the movable member 310 avoid each other during opening or closing, so that the alarm mechanism 200 will not sound during the opening and closing of the maintenance door 20, making operation simple and convenient. Understandably, when it is necessary to reactivate the alarm function, the user only needs to reinstall the lever 520 onto the connecting base 510.

[0047] Optionally, please refer to Figure 4 In some embodiments, the connecting seat 510 may be provided with a snap-fit ​​groove 511, and the lever 520 may include a snap-fit ​​part 521 and a lever head 522 connected to each other. The snap-fit ​​part 521 is detachably snapped into the snap-fit ​​groove 511, and the lever head 522 is disposed opposite to the movable part 310, which is simple and reliable in structure.

[0048] Optionally, the connector 510 may be provided with an adhesive part 512, which can be used to attach the connector 510 to the access door 20.

[0049] Optionally, please refer to Figure 5 and Figure 6The switching mechanism 300 may include a first trigger switch 320 and a second trigger switch 330. The first trigger switch 320 and the second trigger switch 330 may be spaced apart on the mounting body 100. A movable member 310 is rotatably connected to the mounting body 100, and each end of the movable member 310 has an abutment portion 311 and a trigger portion 312. When the maintenance door 20 of the power equipment is opened or closed, the abutment portion 311 can be pushed by the maintenance door 20, so that the movable member 310 rotates to the trigger portion 312 to trigger the first trigger switch 320 or the second trigger switch 330 respectively. This realizes the active start and active end of alarm functions of the alarm mechanism 200, and the structure is simple and reliable.

[0050] Specifically, the movable part 310 may be configured as a block structure, and the movable part 310 has a pivot 313 in its central position. The movable part 310 is rotatably connected to the mounting body 100 through the pivot 313.

[0051] For example, such as Figure 5 As shown, when the maintenance door 20 of the power equipment is opened, the abutment portion 311 of the movable member 310 can be pushed from right to left by the maintenance door 20. Understandably, in this embodiment, the first direction X1 can refer to a right-to-left direction. Subsequently, the movable member 310 can rotate clockwise around the pivot 313. Thus, the trigger portion 312 can move with the rotation to contact the first trigger switch 320, triggering the alarm mechanism 200 and realizing the automatic alarm function. When the maintenance door 20 of the power equipment is closed, it is understood that the maintenance door 20 can push the movable member 310 from left to right from the abutment portion 311. Understandably, in this embodiment, the second direction X2 can refer to a left-to-right direction. Subsequently, the movable member 310 can rotate counterclockwise around the pivot 313. Thus, the trigger portion 312 can move with the rotation to contact the second trigger switch 330, triggering the alarm mechanism 200 to stop and realizing the alarm function is deactivated.

[0052] It is worth noting that the first trigger switch 320 and the second trigger switch 330 can be set on the mounting body 100 at positions that can abut against the trigger part 312, according to the actual rotation stroke of the moving part 310.

[0053] Optionally, the movable part 310 may also be provided with a reset mechanism 600, which is used to reset the movable part 310 after rotation and keep it in the initial position. In this way, under the reset action of the reset mechanism 600, the movable part 310 can be reset to the initial position after each push of the access door 20 or the toggle 500, so that the movable part 310 can be pushed in the opposite direction again, thereby realizing the automatic start and automatic end of the alarm function of the warning mechanism 200.

[0054] For example, such as Figure 5 As shown, the movable part 310 can be maintained as follows Figure 5 The initial position shown can be defined as the intermediate position of the moving part 310 during clockwise and counterclockwise rotation.

[0055] When the access door 20 is opened, the access door 20 or the lever 500 can abut against and push the abutting part 311 of the movable member 310 from the right side of the movable member 310. The movable member 310 can rotate clockwise from the aforementioned middle position, and the access door 20 or the lever 500 can disengage from the movable member 310 after moving a certain distance. At this time, the movable member 310 can be restored to the aforementioned middle position under the reset action of the reset mechanism 600. Understandably, the detached access door 20 or lever 500 is located on the left side of the movable member 310. When the access door 20 is closed, the access door 20 or lever 500 needs to abut against and push the abutting part 311 of the movable member 310 from the left side. The movable member 310 then rotates counterclockwise from the aforementioned middle position. The access door 20 or lever 500 can disengage from the movable member 310 after moving a certain distance. At this time, the movable member 310 can be restored to the aforementioned middle position under the reset action of the reset mechanism 600.

[0056] In this way, during the opening or closing of the inspection door 20, the moving part 310 can repeatedly rotate clockwise, reset, rotate counterclockwise and reset, thereby ensuring that the alarm mechanism 200 can automatically start and stop the alarm during each opening and closing of the inspection door 20.

[0057] Optionally, the aforementioned reset mechanism 600 may be implemented as, but is not limited to, a reset spring, etc.

[0058] Alternatively, in some embodiments, such as Figure 5As shown, the reset mechanism 600 can be configured as a counterweight mechanism, but is not limited to this configuration. The counterweight mechanism is disposed on the abutment portion 311, enabling the movable part 310 to reset and remain in its initial position under the gravity of the counterweight mechanism. This design is simple and reliable. It should be noted that in this embodiment, the reset mechanism 600 is configured as a counterweight mechanism, which further reduces the complexity of the reset mechanism 600 configuration, lowers design costs, simplifies the structure, and improves operational reliability.

[0059] Optionally, please continue reading Figure 5 and Figure 6 The safety warning device may include an arc-shaped base 700, which is connected to the mounting body 100. The arc-shaped base 700 has an arc-shaped groove 710. A first trigger switch 320 and a second trigger switch 330 are respectively disposed at both ends of the arc-shaped groove 710. The triggering part 312 includes a connecting rod 3121, which passes through the arc-shaped groove 710. The connecting rod 3121 can slide along the arc-shaped groove 710 to trigger the first trigger switch 320 or the second trigger switch 330, thus realizing the active start and active end of the alarm function of the warning mechanism 200. The structure is simple and reliable. Furthermore, the arc-shaped base 700 helps to improve the limiting effect on the moving part 310, thereby reducing the shaking of the moving part 310 and improving the stability of the moving part 310 during rotation.

[0060] Specifically, in this embodiment, the opening trajectory of the arc groove 710 is configured to be the same as the movement trajectory of the connecting rod 3121, which can avoid the jamming phenomenon of the connecting rod 3121 in the arc groove 710 and improve the smoothness of movement.

[0061] It is worth noting that the opening trajectory of the arc-shaped groove 710 is configured to be the same as the movement trajectory of the connecting rod 3121. This means that the opening length of the arc-shaped groove 710 is the same as the movement trajectory of the connecting rod 3121. Furthermore, since the first trigger switch 320 and the second trigger switch 330 are respectively located at both ends of the arc-shaped groove 710, it is possible that when the movable part 310 rotates to its maximum angle, the connecting rod 3121 can just move to the end of the arc-shaped groove 710 and can just trigger the first trigger switch 320 or the second trigger switch 330. This helps to improve the working stability and avoids the situation where the connecting rod 3121 does not move to the correct position, causing alarm failure, or the situation where the connecting rod 3121 moves excessively, causing structural damage.

[0062] Optionally, please continue reading Figure 6 In some embodiments, the linkage 3121 may be connected to an extension piece 3122, which is nested in the linkage 3121. The extension piece 3122 is disposed in the arc groove 710 and can slide along the arc groove 710 to trigger the first trigger switch 320 or the second trigger switch 330.

[0063] It should be noted that, in this embodiment, the extension piece 3122 can be used when the opening length of the arc groove 710 is different from the movement trajectory of the connecting rod 3121, in order to compensate for the situation where the connecting rod 3121 does not move to its full position. Optionally, the extension piece 3122 can also be configured as an elastic element, which can play a compression buffering role when the connecting rod 3121 moves excessively, thereby reducing the possibility of structural damage caused by excessive movement of the connecting rod 3121.

[0064] It should be noted that, according to the above embodiments of this application, this application only provides one embodiment in which the movable part 310 can be implemented. Other implementations that enable the switch mechanism 300 to trigger the first trigger switch 320 and the second trigger switch 330 respectively when the maintenance door 20 is opened or closed should also fall within the protection scope of this application.

[0065] For example, in some other embodiments, the movable element 310 of the switching mechanism 300 may also be implemented as a slider-rail combination capable of sliding along a first direction X1 and a second direction X2, respectively. Understandably, when the slider slides to one end of the rail, a first trigger switch 320 can be triggered; when it slides to the other end of the rail, a second trigger switch 330 can be triggered. Therefore, the user can select the activity mode and setting mode of the movable element 310 according to actual needs.

[0066] According to another aspect of this application, such as Figure 1 As shown, this application also provides a power device including the aforementioned safety warning device. The power device is provided with an inspection door 20 and a door frame 10. The inspection door 20 can be rotated to open or close relative to the door frame 10. The mounting body 100 is connected to the door frame 10. When the inspection door 20 is opened, the movable part 310 is pushed by the inspection door 20 and moves in a first direction X1 until the warning mechanism 200 is triggered to start. When the inspection door 20 is closed, the movable part 310 is pushed by the inspection door 20 and moves in a second direction X2 until the warning mechanism 200 is triggered to stop.

[0067] In the aforementioned power equipment, when the maintenance door 20 is opened, the movable part 310 of the switching mechanism 300 is pushed by the maintenance door 20 and moves in the first direction X1 until the warning mechanism 200 is triggered, thereby realizing the function of automatically issuing an alarm when the power equipment needs maintenance. When the maintenance door 20 is closed, the movable part 310 is pushed by the maintenance door 20 and moves in the second direction X2 until the warning mechanism 200 is triggered and stopped, thereby realizing the function of automatically ending the alarm when the power equipment is finished. In other words, after the current maintenance work is completed, the warning mechanism 200 will only be triggered when the next maintenance work is started. This avoids the problem of false alarms of the warning light 210 when the power equipment is normally stopped and resting, as in traditional technology.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A safety warning device, characterized in that, The safety warning device includes a mounting body, a warning mechanism, and a switching mechanism. The mounting body is connected to the door frame of the power equipment. The switching mechanism is connected to the mounting body and electrically connected to the warning mechanism. The switching mechanism includes a movable component that can move relative to the mounting body in a first direction and a second direction to trigger the warning mechanism to start or stop. When the maintenance door of the power equipment is opened, the movable component is pushed by the maintenance door and moves in the first direction until the warning mechanism is triggered to start. When the maintenance door is closed, the movable component is pushed by the maintenance door and moves in the second direction until the warning mechanism is triggered to stop.

2. The safety warning device of claim 1, wherein, The switching mechanism includes a first trigger switch and a second trigger switch, which are spaced apart on the mounting body. The movable member is rotatably connected to the mounting body. The two ends of the movable member have an abutment part and a trigger part, respectively. When the maintenance door of the power equipment is opened or closed, the abutment part can be pushed by the maintenance door, so that the movable member rotates to the trigger part to trigger the first trigger switch or the second trigger switch respectively.

3. The safety warning device according to claim 2, characterized in that, The safety warning device includes an arc-shaped base connected to the mounting body. The arc-shaped base has an arc-shaped groove. The first trigger switch and the second trigger switch are respectively disposed at both ends of the arc-shaped groove. The triggering part includes a linkage rod that passes through the arc-shaped groove. The linkage rod can slide along the arc-shaped groove to trigger the first trigger switch or the second trigger switch.

4. The safety warning device of claim 3, wherein, The linkage is connected to an extension piece, which is nested within the linkage. The extension piece is disposed within the arc-shaped groove and can slide along the arc-shaped groove to trigger the first trigger switch or the second trigger switch.

5. The safety warning device of any one of claims 2-4, wherein, The abutment portion is provided with a reset mechanism, which is used to reset the movable part to its initial position after rotation.

6. The safety warning device of claim 1, wherein, The safety warning device also includes a lever for connecting to the maintenance door of the power equipment. At least a portion of the lever is disposed opposite to the movable part. When the maintenance door is opened or closed, the maintenance door pushes the movable part to move via the lever.

7. The safety warning device of claim 6, wherein, The lever includes a connecting seat and a lever. The connecting seat is used to connect to the maintenance door of the power equipment. The lever is detachably connected to the connecting seat, and at least a portion of the lever is disposed opposite to the movable part.

8. The safety warning device of claim 7, wherein, The connecting seat is provided with a snap-fit ​​groove, and the lever includes a snap-fit ​​part and a lever head that are connected to each other. The snap-fit ​​part is detachably snapped into the snap-fit ​​groove, and the lever head is disposed opposite to the movable part.

9. The safety warning device of claim 1, wherein, The safety warning device also includes a graded alarm mechanism, which is electrically connected to the switching mechanism. The graded alarm mechanism is configured to be triggered to start or stop simultaneously with the warning mechanism.

10. A power plant comprising the safety warning device of any one of claims 1-9, characterized in that, The power equipment is equipped with an inspection door and a door frame. The inspection door can be rotated to open or close relative to the door frame. The mounting body is connected to the door frame. When the inspection door is opened, the movable part is pushed by the inspection door and moves in the first direction until the warning mechanism is triggered to start. When the inspection door is closed, the movable part is pushed by the inspection door and moves in the second direction until the warning mechanism is triggered to stop.

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