CN219423604U - Anti-falling device - Google Patents

Abstract

The utility model discloses a falling prevention device which comprises a guardrail forming a notch and a falling prevention plate arranged on the notch, wherein one side of the falling prevention plate is hinged with the guardrail, the other side of the falling prevention plate is provided with a lock body, the guardrail is provided with a lock groove which is in a locking state with the lock body, the lock groove is provided with a sensor, the sensor can receive a signal when the lock body and the lock groove are in the locking state, and the sensor is electrically connected with a controller and transmits the signal to the controller. Be equipped with the audible and visual alarm who is connected with the controller electricity on guardrail or the anti-falling board, can make the operation personnel get into on the cat ladder overhead operation platform can conveniently open anti-falling device to can also in time remind the operation personnel under the condition of not locking, ensure that anti-falling device is the locking in the whole operation process, improve the security of operational environment.

Description

Anti-falling device

Technical Field

The utility model relates to the technical field of protective fences, in particular to a falling protection device.

Background

In the process of building an offshore oil and gas production device, in order to reduce the building cost, the design specification of the offshore oil and gas production device can be reduced as much as possible under the condition of meeting the production, so that any space of the production device is precious, and the volume and the height of many devices are large due to the production requirement. The instruments and the valves of large-scale equipment are inevitably installed at high places due to limited deck surface area, and particularly, the valves and the instruments on some storage tanks are usually installed at the top of the storage tanks, and operators need to go to a specially designed high-place operation platform at the top of the storage tanks to perform valve operation and instrument data reading.

The periphery of the high-altitude operation platform is provided with anti-falling rails, and a notch with the width of about 1.5 meters is formed in the ladder stand of the high-altitude operation platform. It is common in the art to use two chains for the enclosure at the gap. When the operator walks up to the high-altitude operation platform, the operator firstly unlocks one ends of the two chains to expose the climbing notch, and then hangs the two chains to play a role in protection and falling prevention after the operator walks up to the high-altitude operation platform. However, during actual use, there are problems with the design of such chains:

firstly, some chains only have one hanging point with a half opening, and other locking structures are not provided, so that the hanging chains have the risk of being blown off by wind when in use, and the safety is low; for those chains which can be locked, one hand or even two hands are needed to be left for unlocking before an operator climbs the ladder to climb the platform, and the body of the operator is still on the ladder at the moment, so that the operator is dangerous; secondly, the gap between the two chains is large, and in order to facilitate disassembly, the chains are properly prolonged, so that when people touch the chains, the chains can move, and the falling risk of the people is caused; in addition, due to the unfixed shape of the chain in the use process, the chain can be wound on the feet of the operator when the operator climbs on the working platform at the high position, so that the operator stumbles over, and the working risk is increased. Meanwhile, during repeated bench climbing operation, operators easily forget to close and lock the protection mechanism due to negligence or other factors, and the risk occurrence probability is greatly increased.

Disclosure of Invention

The utility model aims to overcome the defects of inconvenient use and poor safety of the existing chain type protective structure, and provides the anti-falling device, so that an operator can conveniently open the anti-falling device when entering a high-position operation platform on a cat ladder, and the anti-falling device is also provided with a safety device, so that the operator can be timely reminded under the condition of not locking, the anti-falling device is ensured to be locked in the whole operation process, and the safety of an operation environment is improved.

The technical scheme adopted by the utility model is as follows:

the utility model provides a fall protection device, includes the guardrail that forms the breach and locates fall protection board on the breach, fall protection board one side is articulated with the guardrail, is equipped with the lock body on the opposite side, be equipped with on the guardrail with lock body formation lock state's locked groove is equipped with the inductor on the locked groove, the signal when the lock body forms lock state with the locked groove can be received to the inductor, the inductor electricity is connected with the controller, and will signal transmission is to on the controller. An audible and visual alarm electrically connected with the controller is arranged on the guardrail or the anti-falling plate.

The working principle of the utility model is as follows: the notch formed by the guardrail is a channel for operators to enter and exit the high-altitude operation platform, a falling-preventing plate is arranged at the notch, one side of the falling-preventing plate is hinged with the guardrail, and the falling-preventing plate is opened or closed in a rotating mode. The anti-falling plate opposite side is equipped with the lock body, is equipped with on the guardrail can with the lock body forms locking state's locked groove, when anti-falling plate closed and when pushing the lock body into the locked groove, anti-falling plate and guardrail form locking state, play the effect that prevents that operating personnel from falling from the eminence this moment. In order to remind the operation personnel to lock, when locking, the inductor that sets up on the locked groove can receive the lock body and lock groove and form the signal when locking state, and the inductor is given the controller with signal transmission. The number of the inductors can be one or a plurality of the inductors. When the anti-falling plate is opened, the audible and visual alarm flashes and gives out alarm sound to remind operators. The operator closes the fall protection panel after entering or leaving the overhead work platform. At this time, the audible and visual alarm continuously blinks and gives out an alarm sound, so that an operator cannot ignore the audible and visual alarm, and therefore the lock body is required to be pushed into the lock groove to trigger the sensor, and after the sensor sends a signal to the controller, the controller controls the audible and visual alarm to be closed.

Further, in order to ensure the locking state of the lock body and the lock groove, at least two sensors are arranged on the moving path of the lock body, and the lock body needs to trigger all the sensors to enable the audible and visual alarm to be closed when being inserted into the lock groove, so that the aim that the audible and visual alarm cannot be closed due to false touch or failure under the condition that only one sensor is arranged is avoided.

Further, the audible and visual alarm is internally provided with a voice broadcasting module and a communication module, and when an emergency exists, a total control room of the offshore platform can broadcast or communicate operators on the high-altitude operation platform through the voice broadcasting module and the communication module, so that the operators are reminded of paying attention to safety protection or are evacuated in emergency.

Further, in order to optimize the actual use effect, a manual button electrically connected with the controller is also arranged on the guardrail or the anti-falling plate. The manual button includes an enter button and an exit button, the enter button is arranged on one side of the guardrail or the anti-falling plate, namely the outer side, and the exit button is arranged on the opposite side, namely the inner side, of the enter button. Thus, the operator can trigger different buttons when entering or leaving the high-altitude operation platform, and the working state of the operator can be confirmed. If the entering button is triggered and the leaving button is not triggered for a long time, personnel in the general control room can contact an operator on the high-altitude operation platform through the audible and visual alarm to confirm the working state of the operator, and rescue can be started if necessary.

Further, as one of the preferred schemes, the lock body is a common latch lock in the market, the latch lock is provided with a first deflector rod and a second deflector rod, the first deflector rod and the second deflector rod are respectively arranged on the outer side and the inner side of the anti-falling plate and are symmetrically and horizontally arranged along the axis direction of the latch lock, and thus an operator can operate the latch lock on any side of the anti-falling plate.

Further, as another preferable scheme, the lock body is further provided with a driving device, the driving device is connected with an upper locking piece on the lock body, and the upper locking piece can be inserted into the locking groove or pulled out of the locking groove, so that automatic locking and unlocking actions are realized. When an operator presses any one of the enter button and the leave button, the driving device pulls out the locking piece from the locking groove, the locking state of the anti-falling plate is released, and the anti-falling plate can be opened, and the anti-falling plate enters or leaves the high-altitude operation platform. After the person leaves, the driving device inserts the locking piece into the locking groove in a delayed manner to complete automatic locking. The technical scheme can also effectively prevent the problem that potential safety risks exist in operation due to the fact that an operator forgets to record the lock by personnel.

Further, the anti-falling plate is provided with a blocking rod on one side of the lock body, a first magnet is arranged on the blocking rod, a second magnet which is in magnetic contact with the first magnet when the anti-falling plate is closed is also arranged on the guardrail, and the first magnet and/or the second magnet are electrically connected with the controller. When the anti-falling plate is closed, the first magnet and the second magnet are magnetically attracted, so that the anti-falling plate can not freely rotate in a state without locking. Simultaneously, can magnetic attraction's first magnet and second magnet also can make operating personnel when carrying out the action of locking, will prevent falling board and guardrail and keep relatively static state, need not to use the other hand to fix and prevent falling board when locking, and the operation is more convenient. More importantly, the first magnet and the second magnet enable the anti-falling plate and the guardrail to keep a relatively static state, which is a preferable condition for realizing automatic falling locking, when the anti-falling plate and the guardrail keep the relatively static state, the driving device can more conveniently insert the locking piece into the locking groove accurately, otherwise, the locking action cannot be completed due to inaccurate locking groove, so that the automatic falling locking function is disabled, and the anti-falling plate needs to be pressed tightly or stabilized manually, so that the anti-falling plate is turned into a final inversion.

Further, since space on the overhead working platform of the offshore platform is valuable, and in order to make the utility model more practical, the number of fall protection plates is two, namely a first fall protection plate and a second fall protection plate, which are hinged. Of course, the number of fall arrest plates can be three or more depending on the width of the gap formed by the guard rail and the size of the individual fall arrest plates. The advantage of providing a plurality of fall arrest plates is that when open, the fall arrest plates sweep less than the area swept by a single fall arrest plate. In other words, when the plurality of fall protection plates are hinged, the opening range thereof is reduced, so that the space on the top of the overhead working platform can be saved.

Further, the first anti-falling plate and the second anti-falling plate are respectively extended with a first fixed connecting rod and a second fixed connecting rod relatively, the free end of the first fixed connecting rod is hinged with a movable connecting rod, and the movable connecting rod is hinged with the second fixed connecting rod. When opening, the second anti-falling plate rotates towards the first anti-falling plate under the hinge of the second fixed connecting rod and the movable connecting rod, rotates to the overlapping of the second anti-falling plate and the first anti-falling plate, and at the moment, the first anti-falling plate rotates through the hinge part hinged with the guardrail until the notch is completely opened. The area swept by the present utility model can be reduced by about 50% when opening or closing, as compared to a single fall protection plate. Because the first anti-falling plate and the second anti-falling plate are hinged, in order to prevent the hinge from being stressed to rotate outwards, the first anti-falling plate and the second anti-falling plate are opened, a baffle is further connected between the first fixed connecting rod and the second fixed connecting rod, the baffle is arranged on the inner side of the anti-falling plate, and the anti-falling plate can only be opened inwards.

Further, the outside of first anti-falling plate and/or second anti-falling plate is equipped with the warning light, and the warning light is connected with the controller electricity. When an operator enters the high-altitude operation platform and locks the lock body and presses the enter button at the same time, the warning light is turned on to prompt the surrounding operators that personnel are doing high-altitude operation. If the lock body is locked after the departure button is triggered, the warning lamp cannot be lightened.

Compared with the prior art, the utility model has the beneficial effects that:

1. by utilizing the utility model, an operator can conveniently open the anti-falling device when entering the high-position operation platform on the crawling ladder, the anti-falling device has larger stress area compared with a chain, and the anti-falling device can remind the operator in time under the condition of not locking, so that the anti-falling device is locked in the whole operation process, and the safety of the operation environment is improved;

2. the utility model can further use an automatic locking device to automatically lock after an operator enters or leaves the high platform, thereby avoiding unlocking caused by negligence and solving the potential safety hazard;

3. the utility model has low manufacturing and using cost, and each part is a common material in production, has good suitability and can be installed and used on a large scale.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the present utility model;

FIG. 2 is a schematic overall structure of a second embodiment of the present utility model;

FIG. 3 is a schematic view of another embodiment of the present utility model;

FIG. 4 is a view in direction A of FIG. 3;

FIG. 5 is a schematic overall structure of a third embodiment of the present utility model;

FIG. 6 is a schematic view of a third embodiment of the present utility model;

in the accompanying drawings:

1-guard bar; 2-fall protection plate; 201-a first fall arrest plate; 202-a second fall arrest plate; 203-a first fixed connecting rod; 204-a second fixed connecting rod; 205—a movable connecting rod; 206-baffle; 301-a locking groove; 302-a latch lock; 303-a first toggle lever; 304-a second toggle lever; a 4-inductor; 5-a controller; 6-manual button; 601-enter button; 602-leave button; 7-an audible and visual alarm; 8-a driving device; 9-stop lever; 901-a first magnet; 902-a second magnet; 10-warning lamp.

Detailed Description

The utility model is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "front", "rear", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances. Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Embodiment one:

as shown in fig. 1 or fig. 4, this embodiment provides a fall protection device, including the guardrail 1 that forms the breach and locate fall protection board 2 on the breach, fall protection board 2 one side is articulated with guardrail 1 through fixed rotary mechanism, and fall protection board 2 opposite side is equipped with the lock body. The lock body is a deadbolt lock 302 that is quite common in production; the guard rail 1 is provided with a locking groove 301 which is locked with a latch lock 302, and an inductor 4 is arranged in the locking groove 301. The inductor 4 is an arc-shaped metal sheet with certain elasticity, the arc-shaped metal sheet is convexly arranged in the locking groove 301, when the tapered end of the latch lock 302 is inserted into the locking groove 301, the latch lock 302 generates an extrusion effect on the inductor 4, the inductor 4 generates an electric signal due to deformation, and the electric signal is transmitted to the controller 5 electrically connected with the inductor. Meanwhile, due to the extrusion effect, an action effect similar to interference fit is formed between the latch lock 302 and the lock groove 301, and a certain force needs to be applied to the latch lock 302 when the latch lock 302 is pulled out, so that the latch lock 302 is prevented from sliding out of the lock groove 301 in a natural state or under the action of wind force, and the locking effect is eliminated. The guardrail 1 is provided with an audible and visual alarm 7 electrically connected with the controller 5. It should be noted that the audible and visual alarm 7 may also be disposed on the top of the fall protection plate 2.

It should be noted that, in order to further increase the probability that the latch lock 302 and the lock slot 301 maintain the locked state, two arc-shaped metal sheets are provided and are respectively disposed at the middle and the end of the lock slot 301, and the latch lock 302 triggers the two arc-shaped metal sheets to reach the complete locked state when inserted into the lock slot 301.

When the anti-falling plate 2 is opened in use, the audible and visual alarm 7 continuously flashes and gives out low-frequency alarm sounds so as to remind operators to pay attention to closing the anti-falling plate 2 and locking. This continuous audible and visual alarm is not possible for the operator to go unnoticed, thereby preventing forgetting to remember the locking action. When the operator inserts the deadbolt 302 into the lock slot 301, the sensor 4 sends a signal to the controller 5 due to the shape change, which confirms that the lock is completely locked, and the controller 5 controls the audible and visual alarm 7 to be closed.

Compared with the existing chain type enclosure, the anti-falling plate 2 adopted in the embodiment has larger stress area, and the gap between the anti-falling plates 2 is far smaller than the width which an adult can squeeze. When the worker touches the falling prevention plate 2 due to unbalance, the falling prevention plate 2 cannot shake like a chain, and the worker cannot trip over when entering and exiting the notch. Meanwhile, through setting up audible and visual alarm 7, remind the operating personnel to need lock completely, trigger inductor 4 when getting into the eminence work platform, avoid the operating personnel to forget to close protection machanism, lock because of negligence or other factors lead to, reduce the probability that the risk takes place, improve the security of operation environment.

In the embodiment, the guardrail 1 is also provided with the manual button 6, and the manual button 6 has the appearance of bright eye color, so that operators can be reminded to trigger the manual button 6 in time; the appearance is similar to mushroom type, and the structure at top both is favorable to preventing that the rainwater from getting into manual button 6 inside and causing the short circuit, inefficacy also is favorable to the operating personnel to press it. Because of the large surface area, the operator can trigger the manual button 6 to send a signal using a press, tap, flick, or the like. Of course, manual push button 6 may also be provided on top of fall arrest plate 2. In this embodiment, the manual button 6 is used as an alarm for emergency, and when an emergency occurs, an operator can trigger the manual button 6 to give an alarm and send a signal to the general control room of the offshore platform.

Embodiment two:

because space on the high-altitude operation platform of the offshore platform is very precious, referring to fig. 2 and 3, on the basis of the first embodiment, two anti-falling plates 2 are respectively a first anti-falling plate 201 and a second anti-falling plate 202, and the first anti-falling plate 201 and the second anti-falling plate 202 are hinged. The guardrail 1 that prevents falling is designed around the high altitude operation platform, has seted up a breach that width is about 1.5 meters in climbing department of high altitude operation platform, and in this embodiment, the size of first anti-falling plate 201 and second anti-falling plate 202 is the same, is 60cm. The advantage of the present embodiment of providing two fall protection plates 2 is that when opened, the fall protection plates 2 sweep less than the area swept by an entire large size fall protection plate. In other words, when the plurality of fall protection plates 2 are hinged, the opening range thereof is reduced, so that the space at the top of the overhead working platform can be saved.

The first anti-falling plate 201 and the second anti-falling plate 202 in this embodiment extend respectively and relatively to a first fixed connecting rod 203 and a second fixed connecting rod 204, the free end of the first fixed connecting rod 203 is hinged with a movable connecting rod 205, and the movable connecting rod 205 is hinged with the second fixed connecting rod 204. When the guardrail is opened, the second anti-falling plate 202 rotates towards the first anti-falling plate 201 under the hinging of the second fixed connecting rod 204 and the movable connecting rod 205 until the second anti-falling plate 202 and the first anti-falling plate 201 are overlapped, and at the moment, the first anti-falling plate 201 rotates through a hinging piece hinged with the guardrail 1 until the notch is completely opened. The area swept by this embodiment can be reduced by about 50% when opening or closing, as compared to the case of only one fall protection plate 2. Because the first anti-falling plate 201 and the second anti-falling plate 202 are hinged, in order to prevent the hinge from being forced to rotate outwards, the first anti-falling plate 201 and the second anti-falling plate 202 are opened, a baffle 206 is further connected between the first fixed connecting rod 203 and the second fixed connecting rod 204, and the baffle 206 is arranged on the inner side of the anti-falling plate 2, so that the anti-falling plate 2 can only be opened inwards.

In this embodiment, the outside of the first anti-falling plate 201 and the second anti-falling plate 202 is provided with a warning lamp 10, and the warning lamp 10 is electrically connected with the controller 5. When an operator enters the high-altitude operation platform and locks the lock body, the warning lamp 10 is turned on to prompt the surrounding operators that personnel are doing high-altitude operation.

Embodiment III:

as shown in fig. 5 or 6, this embodiment provides another fall arrest device. Unlike the second embodiment, two manual buttons 6 for realizing different functions are provided, namely, an enter button 601 and an exit button 602, and the enter button 601 is disposed on the side of the second fall protection plate 202 that is on the entering side, that is, the outside, so that an operator can press the enter button 601 first and then open the latch lock 302 when entering the overhead working platform. Similarly, the escape button 602 is disposed inside the second fall protection plate 202, and the operator pushes the escape button 602 before opening the latch lock 302. Of course, as in the embodiment, the enter button 601 and the exit button 602 described in this embodiment may also be used to trigger an alarm, and when an emergency occurs, only one of the enter button 601 and the exit button 602 needs to be continuously pressed three times, an alarm is sent, and a signal is sent to the overall control room of the offshore platform.

It should be noted that, the latch lock 302 in this embodiment may be manually opened or closed, or may be automatically opened or closed by providing the driving device 8. The driving device 8 is a common electromagnetic control moving rod, the moving rod is fixedly connected with a bolt on the bolt lock 302, and the moving rod is controlled to move by switching on and off an electromagnetic piece, so that the automatic locking and unlocking actions of the bolt lock 302 are realized. When the operator presses either the enter button 601 or the exit button 602, the driving device 8 pulls the latch lock 302 out of the lock groove 301, and releases the locked state of the second fall protection plate 202, and at this time, the second fall protection plate 202 and the first fall protection plate 201 can be opened to enter or leave the overhead working platform. After the person leaves, the driving device 8 delays to insert the bolt lock 302 into the lock groove 301, and automatic locking is completed. The embodiment can effectively prevent the problem that potential safety risks exist when an operator forgets to record the lock due to personal forgetfulness and enables the operator to work.

In addition, after the enter button 601 is pressed, the controller 5 receives the signal and starts timing until the exit button 602 is pressed, the time is the working time of the next worker on the high-place working platform, and the controller 5 can record the entry time and the working time of the worker and use the entry time and the working time as the basis of the working workload to timely know the working condition of the worker. On this basis, when the exit button 602 is not triggered for a long time after the entry button 601 is triggered, the controller 5 starts the audible and visual alarm 7 and synchronously notifies the main control room of the offshore platform, so as to check the condition of the operator in time and prevent the operator from accident on the platform. Still be provided with voice broadcast module and conversation module in the audible and visual alarm 7, when having the emergency, the master control room of offshore platform can broadcast or communicate the operating personnel on high altitude operation platform through voice broadcast module and conversation module, reminds the operating personnel to pay attention to safety protection, perhaps carries out urgent evacuation to it.

Embodiment four:

referring to fig. 4, on the basis of any of the above embodiments, the side of the anti-falling plate 2 (which is equivalent to the second anti-falling plate 202) provided with the lock body is further provided with a stop lever 9, the stop lever 9 is provided with a first magnet 901, the guardrail 1 is also provided with a second magnet 902 which is magnetically abutted with the first magnet 901 when the anti-falling plate 2 is closed, and the first magnet 901 and the second magnet 902 are electrically connected with the controller 5. When the fall protection plate 2 is closed, the first magnet 901 and the second magnet 902 are magnetically attracted, so that the fall protection plate 2 can not freely rotate in a state without locking. Meanwhile, the first magnet 901 and the second magnet 902 which can be magnetically adsorbed can also enable an operator to keep the anti-falling plate 2 and the guardrail 1 in a relatively static state when in locking, and the anti-falling plate 2 is not required to be fixed by the other hand when in locking, so that the operation is more convenient.

It should be noted that, the state that the first magnet 901 and the second magnet 902 keep the fall protection plate 2 and the guardrail 1 relatively still is a preferred precondition for realizing the automatic fall locking, only if the fall protection plate 2 and the guardrail 1 keep the relatively still state, the driving device 8 can accurately insert the latch lock 302 into the lock slot 301, otherwise, the locking action cannot be completed due to the misalignment of the lock slot 301, so that the failure of the automatic fall locking function is caused, and the fall protection plate 2 needs to be pressed or stabilized manually, so that the fall protection plate 2 is turned into a final inverted state.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a fall protection device, includes guardrail (1) and locating on the breach prevent falling board (2), prevent falling board (2) one side and guardrail (1) are articulated, are equipped with the lock body on the opposite side, be equipped with on guardrail (1) can with lock body formation lock state's locked groove (301), its characterized in that is equipped with inductor (4) on locked groove (301), signal when lock body and locked groove (301) formation lock state can be received to inductor (4), inductor (4) electricity is connected with controller (5), and will signal transmission is to on controller (5), be equipped with on guardrail (1) or the prevent falling board (2) with audible and visual annunciator (7) that controller (5) electricity are connected.

2. A fall protection device according to claim 1, characterized in that the sensor (4) is provided with at least two along the movement path of the lock body.

3. The anti-falling device according to claim 2, wherein a voice broadcasting module and a talking module are further arranged in the audible and visual alarm (7).

4. A fall protection device according to any one of claims 1-3, characterized in that the guard rail (1) or the fall protection plate (2) is further provided with a manual button (6) electrically connected to the controller (5), the manual button (6) comprising an enter button (601) and an exit button (602), the enter button (601) and the exit button (602) being arranged on both sides of the lock body, respectively.

5. The anti-falling device according to claim 4, wherein the lock body is a latch lock (302), a first deflector rod (303) and a second deflector rod (304) are arranged on the latch lock (302), and the first deflector rod (303) and the second deflector rod (304) are symmetrically and horizontally arranged along the axis direction of the latch lock (302).

6. The anti-falling device according to claim 5, wherein the lock body is provided with a driving device (8) for changing the locking state of the lock body, and the driving device (8) is electrically connected with the controller (5).

7. The fall protection device according to claim 6, characterized in that the side of the fall protection plate (2) provided with the lock body is further provided with a stop lever (9), the stop lever (9) is provided with a first magnet (901), the guard rail (1) is also provided with a second magnet (902) which is in magnetic contact with the first magnet (901) when the fall protection plate (2) is closed, and the first magnet (901) and/or the second magnet (902) are electrically connected with the controller (5).

8. A fall protection device according to claim 1, characterized in that the number of fall protection plates (2) is two, a first fall protection plate (201) and a second fall protection plate (202), respectively, the first fall protection plate (201) and the second fall protection plate (202) being hinged.

9. The anti-falling device according to claim 8, wherein the first anti-falling plate (201) and the second anti-falling plate (202) are respectively extended with a first fixed connecting rod (203) and a second fixed connecting rod (204) relatively, the free end of the first fixed connecting rod (203) is hinged with a movable connecting rod (205), and the movable connecting rod (205) is hinged with the second fixed connecting rod (204); a baffle plate (206) is further connected between the first fixed connecting rod (203) and the second fixed connecting rod (204), and the baffle plate (206) is arranged on the inner side of the anti-falling plate (2), so that the anti-falling plate (2) can only be opened inwards.

10. The fall protection device according to claim 8 or 9, characterized in that the outside of the first fall protection plate (201) and/or the second fall protection plate (202) is provided with a warning lamp (10), the warning lamp (10) being electrically connected to the controller (5).