Safety protection device of elevator

Abstract

The utility model discloses an elevator safety protection device which is characterized in that an elevator in the elevator safety protection device is fixed in a cavity body of an elevator arrangement cavity, and an observation door is arranged on a first surface of the cavity body; the interlocking module comprises a first interlocking unit and a second interlocking unit, the first interlocking unit is located on the first surface, the second interlocking unit is located on the observation door, and the first interlocking unit is located on a moving path of the second interlocking unit along with the observation door; the control module comprises an equipment state receiving end, a third end and a fourth end; the control module judges the running state of the elevator according to the equipment information received by the equipment state receiving end; furthermore, the control module controls the first interlocking unit and the second interlocking unit to be in contact or controls the first interlocking unit and the second interlocking unit not to be in contact according to the opening and closing conditions, so that state adjustment of the observation door is achieved, and the overall safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of hoist equipment control, and in particular to a hoist safety protection device. Background Technology

[0002] Routine equipment maintenance is a basic requirement to ensure normal production in the workshop. Currently, the observation windows of traditional feeding elevators are manually inspected to check their opening and closing status one by one.

[0003] However, during the production process, there are situations where personnel fail to detect the problem properly, operators may accidentally operate the switch when they are close to it, and the observation window may open due to vibration or other equipment factors while the hoist is running. In other words, there is a risk that the observation window may be opened at will. Utility Model Content

[0004] This utility model provides a safety protection device for a hoist. By adding an interlocking module to the hoist safety protection device, the control module adjusts the interlocking module according to the received opening and closing information and the received equipment information, thereby ensuring the overall safety and reliability of the hoist safety protection device.

[0005] This utility model provides a safety protection device for a hoist, including a hoist, a hoist housing cavity, a control module, and an interlocking module;

[0006] The hoist cavity includes a cavity body, the hoist is fixed inside the cavity body, and an observation door is provided on the first surface of the cavity body; the hoist includes a device status output terminal;

[0007] The interlocking module includes a first interlocking unit and a second interlocking unit. The first interlocking unit is located on the first surface, and the second interlocking unit is located on the observation door. The first interlocking unit is located on the movement path of the second interlocking unit along with the observation door. The first interlocking unit includes a first end, and the second interlocking unit includes a second end.

[0008] The control module includes a device status receiver, a third terminal, and a fourth terminal;

[0009] The device status output terminal is connected to the device status receiving terminal, the first terminal is connected to the third terminal, and the second terminal is connected to the fourth terminal; the control module determines the operating status of the hoist based on the device information received by the device status receiving terminal; the control module controls the first interlocking unit and the second interlocking unit to contact or controls the first interlocking unit and the second interlocking unit to not contact based on the operating status.

[0010] Optionally, the first interlocking unit includes a first electromagnet, and the second interlocking unit includes a second electromagnet.

[0011] Optionally, the hoist safety protection device further includes a detection module;

[0012] The detection module is located on the second surface of the cavity; the detection module includes a detection head facing the first surface; the detection module includes a detection signal output terminal; the first surface and the second surface are arranged opposite to each other or adjacent to each other;

[0013] The control module includes a detection signal input terminal;

[0014] The detection signal output terminal is connected to the detection signal input terminal, and the control module determines the opening and closing status of the observation door based on the opening and closing information received by the detection signal input terminal.

[0015] Optionally, the detection unit includes a photodetector.

[0016] Optionally, the hoist safety protection device further includes a mechanical interlock module, which includes a buckle and a locking structure. The locking structure is located on the first surface, the buckle is located on the observation door, and the locking structure is located on the movement path of the buckle along the observation door.

[0017] Optionally, the hoist safety protection device also includes a door opening button, which is connected to the control module.

[0018] Optionally, the control module includes a programmable logic controller.

[0019] Optionally, the hoist safety protection device further includes a warning module, which is fixed to the cavity; the warning module is connected to the control module.

[0020] Optionally, the warning module includes a warning light.

[0021] Optionally, the alert module includes a voice prompt.

[0022] This utility model provides a safety protection device for a hoist, which includes a hoist and a hoist housing cavity. The hoist housing cavity includes a cavity body and an observation door located on one side of the cavity body. The hoist is fixed inside the cavity body. The hoist inside the cavity can be observed through the observation door. When the observation door is open, the hoist is exposed; when the observation door is closed, the hoist is inside the cavity body. Furthermore, the hoist safety protection device also includes a control module and an interlocking module. The control module is connected to the hoist and can determine whether the hoist is running. The control module is also connected to the interlocking module, which includes a first... The control module can control the first interlocking unit on the surface and the second interlocking unit located at the observation door to be in contact, i.e., the observation door is currently in a closed state, or to be in an open state. Specifically, when the hoist is running, the control module controls the observation door to close through the interlocking module to prevent the hoist from being exposed, thereby ensuring the safe and reliable operation of the overall equipment. When the hoist is stationary, the control module can control the observation door to open through the interlocking module. In this way, adjusting the opening and closing state of the observation door according to the operating status of the hoist can include the safety and reliability of the hoist safety protection device.

[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural schematic diagram of the first type of hoist safety protection device provided by this utility model;

[0026] Figure 2 This is a structural schematic diagram of the second type of hoist safety protection device provided by this utility model;

[0027] Figure 3 This is a structural schematic diagram of the third type of hoist safety protection device provided by this utility model;

[0028] Figure 4 This is a structural schematic diagram of the fourth type of hoist safety protection device provided by this utility model. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] Figure 1 This is a structural schematic diagram of the first type of safety protection device for hoists provided by this utility model. Figure 2 This is a structural schematic diagram of the second type of hoist safety protection device provided by this utility model. Figure 3 This is a structural schematic diagram of the third type of hoist safety protection device provided by this utility model, for reference. Figures 1 to 3As shown, this utility model provides a hoist safety protection device 10, which includes a hoist 100, a hoist mounting cavity 200, a control module 300, and an interlocking module 400. The hoist mounting cavity 200 includes a cavity 201, and the hoist 100 is fixed inside the cavity 201. An observation door 202 is provided on the first surface 201a of the cavity 201. The hoist 100 includes an equipment status output terminal 100a. The interlocking module 400 includes a first interlocking unit 410 and a second interlocking unit 420. The first interlocking unit 410 is located on the first surface 201a, and the second interlocking unit 420 is located on the observation door 202. The first interlocking unit 410 is located next to the second interlocking unit 420 along with the observation door 202. On the moving path; the first interlocking unit 410 includes a first end 410a, and the second interlocking unit 420 includes a second end 420a; the control module 300 includes a device status receiving end 300a, a third end 300b, and a fourth end 300c; the device status output end 100a is connected to the device status receiving end 300a, the first end 410a is connected to the third end 300b, and the second end 420a is connected to the fourth end 300c; the control module 300 determines the operating status of the hoist 100 based on the device information received by the device status receiving end 300a; the control module 300 controls the first interlocking unit 410 and the second interlocking unit 420 to contact or controls the first interlocking unit 410 and the second interlocking unit 420 to not contact based on the operating status.

[0032] Among them, reference Figure 1 and Figure 2 As shown, the elevator safety protection device 10 includes an elevator 100 and an elevator housing cavity 200. The elevator 100 is disposed inside the elevator housing cavity 200. The elevator 100 can be understood as a feeding elevator in the tobacco processing industry, and the elevator housing cavity 200 can be understood as the space where the operating equipment is located. For details, refer to... Figure 1 and Figure 2 As shown, the hoist setting cavity 200 includes a cavity 201, which can be understood as the internal space formed around the hoist setting cavity 200, and the hoist 100 is fixed inside the cavity 201. Further, an observation door 202 is provided on the first surface 201a of the cavity 201, through which the operating status of the hoist 100 inside can be observed. Optionally, the observation door 202 can be made of a light-transmitting material such as glass or acrylic. Further, refer to... Figure 1 As shown, when the observation door 202 is closed, the hoist 100 inside the cavity 201 can be seen through the observation door 202. Figure 1 Structures not directly shown are indicated by dashed lines, for example... Figure 1 The hoist 100 in the middle; Reference Figure 2As shown, when the observation door 202 is open, the elevator 100 inside the cavity 201 can be directly shown, that is, the elevator 100 is exposed.

[0033] Furthermore, the hoist safety protection device 10 also includes an interlock module 400, as shown in the reference. Figure 1 and Figure 2 As shown, the interlocking module 400 includes a first interlocking unit 410 and a second interlocking unit 420. The first interlocking unit 410 is located on the first surface 201a of the cavity 201, and the second interlocking unit 420 is disposed on the observation door 202. The first interlocking unit 410 is located along the movement path of the second interlocking unit 420 as the observation door 202 moves. This can also be understood as follows: as the observation door 202 moves—that is, when the observation door 202 opens or closes—the second interlocking unit 420 on the observation door 202 can, in conjunction with the movement state of the observation door 202, achieve contact or non-contact with the first interlocking unit 410. Specifically, refer to... Figure 1 As shown, when the observation door 202 is closed, the first interlocking unit 410 and the second interlocking unit 420 are in contact; Reference Figure 2 As shown, when the observation door 202 is open, the first interlocking unit 410 and the second interlocking unit 420 are not in contact. It should be noted that, according to the reference... Figure 1 As shown, the first interlocking unit 410 and the second interlocking unit 420 are obscured by the observation gate 202 from this viewpoint, therefore... Figure 1 In the diagram, the first interlocking unit 410 and the second interlocking unit 420 are shown in dashed lines; see reference. Figure 2 As shown, the first interlocking unit 410 and the second interlocking unit 420 are not obstructed by the observation gate 202 from this viewpoint, therefore... Figure 2 In the diagram, the first interlocking unit 410 and the second interlocking unit 420 are shown in solid lines.

[0034] Furthermore, the hoist safety protection device 10 also includes a control module 300, which is connected to both the interlocking module 400 and the hoist 100. The control module 300 can regulate the interlocking module 400 based on the specific operating status of the hoist 100, ensuring overall safety and reliability. For details, refer to... Figure 3As shown, the hoist 100 includes a device status output terminal 100a, a first interlocking unit 410 including a first terminal 410a, a second interlocking unit 420 including a second terminal 420a, and a control module 300 including a device status receiving terminal 300a, a third terminal 300b, and a fourth terminal 300c. The device status output terminal 100a is connected to the device status receiving terminal 300a, enabling the control module 300 to connect with the hoist 100. The control module 300 can determine the operating status of the hoist 100 based on the device information received from the device status receiving terminal 300a. The operating status includes whether the hoist 100 is running or stationary. Furthermore, when the hoist 100 is running, to ensure its normal operation is not disturbed by external factors and to prevent operators from entering the operating space of the hoist 100, the observation door 202 must be kept closed. When the hoist 100 is stationary, the observation door 202 can be opened for equipment maintenance and adjustments.

[0035] Specifically, the control module 300 is connected to the first interlocking unit 410 and the second interlocking unit 420 respectively. The control module 300 can control the first interlocking unit 410 and the second interlocking unit 420 to either engage or disengage based on the acquired operating status of the hoist 100. Specifically, when the hoist 100 is running, to ensure safety, the first interlocking unit 410 and the second interlocking unit 420 are kept in contact, thus ensuring that the observation door 202 is closed and the hoist 100 is not exposed. When the hoist 100 is stationary, the first interlocking unit 410 and the second interlocking unit 420 can be kept out of contact, thus ensuring that the observation door 202 is open and the hoist 100 is exposed, allowing for equipment maintenance and other procedures. With this hoist safety protection device 10 configured such that the control module 300 can adjust the interlocking module 400 based on the specific operating status of the hoist 100, ensuring overall safety and reliability.

[0036] Optionally, the connection between the hoist 100 and the interlocking module 400 and the control module 300 can be an electrical connection or a communication connection, etc. The specific connection method can be adapted to actual needs.

[0037] Optional, see reference Figure 3As shown, the control module 300 includes a programmable logic controller (PLC). A PLC is a digital electronic system specifically designed for industrial applications. It uses a programmable memory to store instructions for performing logical operations, sequential control, timing, counting, and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog inputs and outputs.

[0038] In summary, this utility model embodiment provides a hoist safety protection device. This device includes a control module and an interlocking module. The control module is connected to the hoist and can determine whether the hoist is running. The control module is also connected to the interlocking module, which includes a first interlocking unit located on a first surface and a second interlocking unit located on an observation door. The control module can control the first and second interlocking units to be in contact (i.e., the observation door is currently closed) or to be out of contact (i.e., the observation door is currently open). Specifically, when the hoist is running, the control module controls the observation door to close via the interlocking module, preventing the hoist from being exposed and ensuring the safe and reliable operation of the entire device. When the hoist is stationary, the control module can control the observation door to open via the interlocking module. Thus, adjusting the opening and closing state of the observation door according to the hoist's operating status enhances the safety and reliability of the hoist safety protection device.

[0039] Continue to refer to Figures 1 to 3 As shown, the first interlocking unit 410 includes a first electromagnet, and the second interlocking unit 420 includes a second electromagnet.

[0040] Further reference Figures 1 to 3 As shown, in the interlocking module 400, the first interlocking unit 410 is a first electromagnet, and the second interlocking unit 420 is a second electromagnet. When the hoist 100 is running, that is, when the hoist 100 starts production, the control module 400 controls the coil in the interlocking module 499 to be energized. After the coil is energized, the iron core of the electromagnet is magnetized and attracts the permanent magnet with opposite magnetic properties, thus locking the observation door. Alternatively, the first interlocking unit 410 can be magnetized and the second interlocking unit 420 can be a permanent magnet; or the second interlocking unit 420 can be magnetized and the first interlocking unit 410 can be a permanent magnet. When the observation door 202 is closed via the interlocking module 400, that is, when the first interlocking unit 410 and the second interlocking unit 420 are magnetized and attracted, the observation door 202 cannot be opened arbitrarily, improving the safety and stability of the hoist safety protection device 10.

[0041] Figure 4 This is a structural schematic diagram of the fourth type of hoist safety protection device provided by this utility model, for reference. Figure 1 , Figure 2 and Figure 4 As shown, the hoist safety protection device 10 also includes a detection module 500; the detection module 500 is located on the second surface 201b of the cavity 201; the detection module 500 includes a detection head 501, which faces the first surface 201a; the detection module 500 includes a detection signal output terminal 500a; the first surface 201a and the second surface 201b are arranged opposite to each other or adjacent to each other; the control module 300 includes a detection signal input terminal 300d; the detection signal output terminal 500a is connected to the detection signal input terminal 300d, and the control module 300 determines the opening and closing status of the observation door 202 based on the opening and closing information received by the detection signal input terminal 300d.

[0042] Further reference Figure 1 , Figure 2 and Figure 4 As shown, the hoist safety protection device 10 also includes a detection module 500 connected to the control module 300. The detection module 500 includes a detection head 501, and the detection head 501 faces the first surface 201a, that is, the detection head 501 faces the observation door 202. The information collected by the detection head 501 can be transmitted to the control module 300, and the control module 300 can judge the opening and closing status of the observation door 202.

[0043] For details, please refer to Figure 1 and Figure 2 As shown, the detection module 500 is located on the second surface 201b of the cavity 201. For the second surface 201b... Figure 1 and Figure 2 The second surface 201b and the first surface 201a are arranged adjacent to each other. In other cases, the second surface 201b can be arranged opposite to the first surface 201. Regardless of which surface of the cavity 201 the detection module 500 is located on, it is sufficient to ensure that the detection head 501 of the detection module 500 can be aligned with the observation door 202 to facilitate the acquisition of information about the observation door 202. (Reference) Figure 1 and Figure 2 As shown, the detection module 500 is obscured by the cavity 201 from this viewpoint, therefore... Figure 1 and Figure 2 In the diagram, the detection module 500 is shown as a dashed line.

[0044] For details, please refer to Figure 4As shown, the detection module 500 includes a detection signal output terminal 500a, and the control module 300 includes a detection signal input terminal 300d. The detection signal output terminal 500a and the detection signal input terminal 300d are connected to realize the connection between the control module 300 and the detection module 500. The control module 300 determines the opening and closing status of the observation door 202 based on the opening and closing information received by the detection signal input terminal 300d. The detection module 500 can collect the opening and closing status of the observation door 202 before the control module 500 controls the interlocking module 400, and the control module 500 can also collect the opening and closing status of the observation door 202 after the control module 500 controls the interlocking module 400. In this way, the detection module 500 can ensure that the protection device of the hoist safety protection device 10 is safer and more reliable.

[0045] Optional, continue to refer to Figures 1 to 4 As shown, the detection unit 500 includes a photodetector.

[0046] The photodetector involves photoelectric detection technology, an emerging detection technology combining optics and electronics. It primarily utilizes electronic technology to detect optical signals and further transmit, store, control, calculate, and display them. Optionally, the detection unit 500 can also be an image acquisition device, such as a camera.

[0047] Continue to refer to Figure 1 and Figure 2 As shown, the hoist safety protection device 10 also includes a mechanical interlock module 600, which includes a buckle 620 and a locking structure 610. The locking structure 610 is located on the first surface 201a, the buckle 620 is located on the observation door 202, and the locking structure 610 is located on the movement path of the buckle 620 along the observation door 202.

[0048] Further reference Figure 1 and Figure 2 As shown, the hoist safety protection device 10 also includes a mechanical interlock module 600, which includes a buckle 620 and a locking structure 610. The buckle 620 engages with the locking structure 610 to achieve a mechanically fixed connection. For details, refer to... Figure 1 and Figure 2As shown, the locking structure 610 is located on the first surface 201a, and the latch 620 is located on the observation door 202. The locking structure 610 is positioned along the movement path of the latch 620 as the observation door 202 moves. This can be understood as the latch 620 moving with the observation door 202. When the observation door 202 is closed, the latch 620 engages with the locking structure 610. By fastening the latch 620 to the locking structure 610, a mechanical fixation connection is achieved, thus ensuring the closed state of the observation door 202. The number of mechanical interlock modules 600 can be adjusted adaptively according to actual needs. Figure 1 and Figure 2 The example is illustrated using six sets of matching mechanical interlocking modules 600. In other words, the operator can close the observation door 202 by fastening the buckle 620 to the locking structure 610. When the hoist 100 inside the cavity 201 is running, the control module 300 controls the locking module 400 to engage, thereby ensuring that the observation door 202 can be closed more safely and reliably.

[0049] Continue to refer to Figure 3 and Figure 4 As shown, the hoist safety protection device 10 also includes a door opening button 700, which is connected to the control module 300.

[0050] Further reference Figure 3 and Figure 4 As shown, the hoist safety protection device 10 also includes a door opening button 700, which is connected to the control module 300. When the door opening button 700 is activated (either by the control module 300 or manually by the operator), it can control the first interlocking unit 410 and the second interlocking unit 420 to change from a contact state to a non-contact state. For example, if the first interlocking unit 410 is an electromagnet and the second interlocking unit 420 is a permanent magnet, when the coil of the first interlocking unit 410 is energized, the first interlocking unit 410 and the second interlocking unit 420 are in contact. When the door opening button 700 is pressed, the coil of the first interlocking unit 410 is de-energized, thus changing the contact state of the first interlocking unit 410 and the second interlocking unit 420 to a non-contact state, thereby unlocking the interlocking module 400. By adding a door opening button 700, the operability of the hoist safety protection device 10 can be increased, adapting to more situations and scenarios.

[0051] Continue to refer to Figure 4 As shown, the hoist safety protection device 10 also includes a warning module 800, which is fixed on the cavity 201; the warning module 800 is connected to the control module 300.

[0052] Further reference Figure 4 As shown, the hoist safety protection device 10 also includes a warning module 800, which is fixed to the cavity 201. The specific position of the warning module 800 fixed to the cavity 201 can be adjusted adaptively according to the actual situation. Figure 1 and Figure 2 Not specifically shown in the diagram. Meanwhile, the warning module 800 is connected to the control module 300. The control module 300 controls the warning module 800 to achieve different states based on the opening and closing state of the observation door 202, thus providing more intuitive prompts to operators.

[0053] Optionally, the warning module 800 includes a warning light.

[0054] The warning module 800 includes a warning light, the intensity of which can be adjusted according to the different states of the observation door 202. For example, the warning light illuminates when the observation door 202 is open and does not illuminate when the observation door 202 is closed; or the warning light emits red light when the observation door 202 is open and green light when the observation door 202 is closed. The specific illumination of the warning light can be adaptively adjusted according to the implementation requirements.

[0055] Optionally, the alert module 800 includes a voice prompt.

[0056] The warning module 800 includes a voice prompt, which can be adjusted to produce different sounds depending on the different states of the observation door 202. For example, when the observation door 202 is open, the voice prompt emits a raised tone, and when the observation door 202 is closed, the warning light remains silent; or, when the observation door 202 is open, the voice prompt emits a "door open" voice prompt, and when the observation door 202 is closed, the voice prompt emits a "door closed" voice prompt. The specific sound output of the voice prompt can be adaptively adjusted according to implementation requirements.

[0057] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A safety protection device for a hoist, characterized in that, Includes a hoist, a hoist housing, a control module, and an interlocking module; The hoist cavity includes a cavity body, the hoist is fixed inside the cavity body, and an observation door is provided on the first surface of the cavity body; the hoist includes a device status output terminal; The interlocking module includes a first interlocking unit and a second interlocking unit. The first interlocking unit is located on the first surface, and the second interlocking unit is located on the observation door. The first interlocking unit is located on the movement path of the second interlocking unit along with the observation door. The first interlocking unit includes a first end, and the second interlocking unit includes a second end. The control module includes a device status receiver, a third terminal, and a fourth terminal; The device status output terminal is connected to the device status receiving terminal, the first terminal is connected to the third terminal, and the second terminal is connected to the fourth terminal; The control module determines the operating status of the hoist based on the equipment information received by the equipment status receiver; the control module controls the first interlocking unit and the second interlocking unit to contact or control the first interlocking unit and the second interlocking unit to not contact based on the operating status.

2. The hoist safety protection device according to claim 1, characterized in that, The first interlocking unit includes a first electromagnet, and the second interlocking unit includes a second electromagnet.

3. The hoist safety protection device according to claim 1, characterized in that, The hoist safety protection device also includes a detection module; The detection module is located on the second surface of the cavity; the detection module includes a detection head facing the first surface; the detection module includes a detection signal output terminal; the first surface and the second surface are arranged opposite to each other or adjacent to each other; The control module includes a detection signal input terminal; The detection signal output terminal is connected to the detection signal input terminal, and the control module determines the opening and closing status of the observation door based on the opening and closing information received by the detection signal input terminal.

4. The hoist safety protection device according to claim 3, characterized in that, The detection module includes a photodetector.

5. The hoist safety protection device according to claim 1, characterized in that, The hoist safety protection device also includes a mechanical interlock module, which includes a buckle and a locking structure. The locking structure is located on the first surface, the buckle is located on the observation door, and the locking structure is located on the movement path of the buckle along the observation door.

6. The hoist safety protection device according to claim 1, characterized in that, The hoist safety protection device also includes a door opening button, which is connected to the control module.

7. The hoist safety protection device according to claim 1, characterized in that, The control module includes a programmable logic controller.

8. The hoist safety protection device according to claim 1, characterized in that, The hoist safety protection device also includes a warning module, which is fixed to the cavity; the warning module is connected to the control module.

9. The hoist safety protection device according to claim 8, characterized in that, The warning module includes a warning light.

10. The hoist safety protection device according to claim 8, characterized in that, The warning module includes a voice prompt.

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