A safety detection method for a pull rope in a pull rope safety door

Abstract

The application provides a safety detection method for pull rope in a safety door, and relates to the technical field of safety doors, and comprises the following steps: S1: judging whether the pulling force value on the connecting belt is not less than a first preset value; if yes, executing step S2; otherwise, not executing the operation; S2: judging whether the pulling force value on the connecting belt is not greater than a second preset value at the same time; if yes, issuing a broken rope alarm; otherwise, not executing the operation; the first preset value is greater than the second preset value. The application is characterized in that flexible connecting belts are connected between two adjacent pull ropes. When the pulling force value on one connecting belt is very large and the pulling force value on the other connecting belt is very small at the same time, it is considered that there is a risk of broken pull rope, a broken rope alarm is issued, the staff is reminded to eliminate the risk, and someone is prevented from passing through the safety door, so that the safety door has high safety.

Description

Technical Field

[0001] This invention relates to the field of security door technology, and in particular, to a method for detecting the safety of a pull rope in a pull rope security door. Background Technology

[0002] With urban development, the demand for public transportation vehicles to serve the transportation needs between urban areas and suburbs is increasing. As different regions develop in diverse ways, the actual demand for public transportation vehicles varies greatly. These include buses between communities, subways (including underground railways and light rail) within cities, and vehicles between cities (including passenger vehicles, high-speed trains, and regular trains), etc., all of which are collectively referred to as public transportation vehicles.

[0003] These public transport platforms experience high passenger flow and operate at high speeds, necessitating the installation of platform screen doors to separate waiting passengers from the vehicles and prevent accidental falls. Furthermore, to accommodate varying passenger volumes, vehicles are typically designed with different formations, such as two-car or three-car formations. Different formations of vehicles may exist on a single line to accommodate different station boarding and alighting needs, meaning the doors of different vehicles may open in different positions. This can lead to mismatches between platform screen doors and vehicle doors, causing significant inconvenience for passengers boarding and alighting.

[0004] Therefore, conventional swing doors (sliding doors) cannot achieve the goal of "one platform screen door area corresponding to multiple types of vehicles". Now, there are platform screen doors with a large opening formed by setting a long pull rope between two gate posts. In this way, the width of the gate post accounts for a small proportion of the total width of the platform screen door. The opening position of each vehicle model can also be controlled by the length of the pull rope. For example, Chinese invention patent CN116517427A provides a smart platform screen door structure for rail transit platforms, which relates to the field of rail transit technology. It includes fixed columns and movable columns. The fixed columns are provided with telescopic grooves, and limit sliding columns are provided in the telescopic grooves. The movable columns include a main plate, a lead screw, and a slider. The upper part of the main plate is provided with a rotating roller and a conveyor belt. The lead screw is provided with a first connector and a second connector. The end of the conveyor belt away from the first connector is connected to the slider. The slider is provided with a hook. There are at least two fixed columns and movable columns, so that the movable columns on the two fixed columns are connected by a pull rope whose end is fixed to the hook. The invention is simple to set up. It uses a pull-rope screen door to extend the distance between the screen door columns. One screen door area can correspond to the doors of multiple types of vehicles, which is suitable for different requirements of different vehicle door opening positions, making it convenient for passengers to get on and off. In addition, the two-stage lifting structure of the pull rope is stable, and when the pull rope is lowered, it can effectively prevent people from falling off the platform, thus ensuring high safety.

[0005] However, the aforementioned platform screen door structure still has the following drawbacks: The entire platform is very long. In the past, without platform screen doors, the entire platform was unobstructed, and even a small number of staff could clearly see whether any passengers had crossed the yellow line. However, after installing multiple safety gate posts, the view is obstructed, and a small number of staff cannot promptly detect anyone intruding outside the safety gate. Although the pull rope can prevent pedestrians from crossing to some extent, the pull rope still faces the risk of weathering and breakage after long-term use, and there is also the risk of the pull rope being cut by people. Once the pull rope breaks, not only can passengers easily pass through the safety gate, but when the safety gate is opened, the broken ten-meter-long pull rope can easily trip passengers, trap passenger luggage, or even intrude into the vehicle driving area, causing serious risks. There are still safety hazards when vehicles enter and exit the station.

[0006] Therefore, in order to solve the above problems, it is necessary for us to design a method for detecting the safety of the pull rope in a pull rope safety gate. Summary of the Invention

[0007] The purpose of this invention is to provide a method for detecting the safety of pull ropes in a pull rope safety gate. A flexible connecting strip is connected between two adjacent pull ropes. When the tension value on one connecting strip is very high while the tension value on the other connecting strip is very low, it is considered that there is a risk of pull rope breakage, and a rope breakage alarm is issued to remind staff to eliminate the risk and prevent people from taking the opportunity to pass through the safety gate, thus ensuring that the safety gate has a high level of security.

[0008] To achieve the above objectives, the present invention employs the following technical solution:

[0009] A method for detecting the safety of a pull rope in a pull rope safety gate, used in a pull rope safety gate structure, the structure including several columns and a safety gate formed by several liftable pull ropes arranged between two adjacent columns, with a connecting strap connecting two adjacent pull ropes;

[0010] The method includes the following steps:

[0011] S1: Determine if the tension value on the connecting belt is not less than the first preset value; if yes, proceed to step S2; otherwise, do not perform the operation.

[0012] S2: Determine if the tension value on the connecting belt is not greater than the second preset value at the same time; if so, issue a rope break alarm; otherwise, do not perform the operation.

[0013] The first preset value is greater than the second preset value.

[0014] As a preferred embodiment of the present invention, the safety gate post is provided with a slider for connecting to the end of the pull rope and a motor for driving the slider to slide, and the post is provided with a controller;

[0015] Before executing step S1, establish electrical connections between the controllers on the columns at both ends of the safety gate, and obtain the lifting stroke positions of the two sliders at both ends of the pull rope in real time. Control the motor to ensure that the height difference between the two ends of the pull rope is not greater than the preset value.

[0016] As a preferred embodiment of the present invention, a tension sensor is provided on the connecting strip; the tension sensor is electrically connected to the controller;

[0017] During steps S1 and S2, the controller obtains the tension value on the connecting belt through the tension sensor.

[0018] As a preferred embodiment of the present invention, before performing step S1, a first preset value is generated based on the length and material of the pull rope;

[0019] Before performing step S2, a second preset value is generated based on the length and material of the pull rope.

[0020] As a preferred embodiment of the present invention, at least one connecting strap is provided between any two adjacent pull ropes, and the distance between each connecting strap and the column is different.

[0021] When performing step S1, the first preset value on each connecting strip is different;

[0022] When performing step S2, the second preset value on each connecting strip is different.

[0023] As a preferred embodiment of the present invention, step S2 is specifically performed as follows:

[0024] Determine whether there is a tension value on the connecting belt that is not less than the first preset value and at the same time, the tension value on the connecting belt that is not greater than the second preset value, and maintain this for a preset time; if so, issue a rope breakage alarm; otherwise, do not perform any operation.

[0025] As a preferred embodiment of the present invention, when performing step S1, the connecting strip with a tensile strength value not less than a first preset value is marked as the first connecting strip;

[0026] When performing step S2, the connecting strip with a tensile force value not greater than the second preset value is marked as the second connecting strip;

[0027] When performing step S2, a preset time value is generated based on the distance between the first connecting strip and the second connecting strip.

[0028] As a preferred embodiment of the present invention, an alarm is provided on the column;

[0029] When performing step S2, a rope break alarm is triggered by the alarm.

[0030] As a preferred embodiment of the present invention, the connecting strap is a flexible component with adjustable tightness;

[0031] Before performing step S1, adjust the tension of all connecting straps to be the same.

[0032] In a second aspect, an apparatus is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement a rope safety detection method for a rope safety gate provided by any of the implementations of the first aspect.

[0033] Thirdly, embodiments of this application provide a computer storage medium storing a computer program, which includes program instructions. When executed by a processor, the program instructions can implement a rope safety detection method for a rope safety gate provided in any of the implementations of the first aspect.

[0034] The beneficial effect of the pull rope safety detection method in the pull rope safety gate of the present invention is that: a flexible connecting strip is connected between two adjacent pull ropes. When the tension value on one connecting strip is very large while the tension value on the other connecting strip is very small, it is considered that there is a risk of pull rope breakage, and a rope breakage alarm is issued to remind the staff to eliminate the risk and prevent people from taking the opportunity to pass through the safety gate, thus ensuring that the safety gate has a high level of security. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a rope safety detection method for a rope safety gate according to the present invention. Detailed Implementation

[0036] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0037] In the following description, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The following description provides multiple embodiments of this application, which can be substituted or combined with each other. Therefore, this application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then this application should also be considered to include embodiments containing one or more other possible combinations of A, B, C, and D, even if such embodiments are not explicitly described in the following text.

[0038] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the described elements without departing from the scope of this application. Various processes or components may be appropriately omitted, substituted, or added to the examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.

[0039] Example 1: As Figure 1 As shown, Figure 1 This is a schematic diagram of a pull-rope safety detection method in a pull-rope safety gate according to the present invention. It is only one embodiment of the present invention. The pull-rope safety detection method in a pull-rope safety gate is used for a pull-rope safety detection structure in a pull-rope safety gate. The structure includes several columns and a safety gate formed by several liftable pull ropes arranged between two adjacent columns. A connecting strap connects two adjacent pull ropes.

[0040] First, let's explain the safety gate. Taking a high-speed rail platform as an example, the safety gate, formed by the pillars and the ropes connecting the two pillars, is installed on the platform. The following explanation also uses a high-speed rail platform as an example, but it does not exclude the possibility of the platform being a subway station, a regular vehicle platform, or even a bus station. When a vehicle (or train, hereinafter referred to as a vehicle) enters the station, passengers waiting on the platform may be at risk of falling onto the platform and being run over or squeezed into the gap between the vehicle and the platform. Therefore, safety gates are installed on the platform. After the vehicle comes to a complete stop, the safety gates open, allowing passengers to get on and off the vehicle. After passengers have finished getting on and off, the safety gates close, allowing the vehicle to leave the station again. This protects passengers behind the safety gates when the vehicle enters and exits the station, effectively reducing the risk of falling onto the platform.

[0041] The safety gate structure includes several columns installed on the platform and a safety gate formed by a liftable rope installed between two adjacent columns. Of course, two columns and the rope between the two columns form a safety gate body, and multiple safety gate bodies together constitute a complete safety gate. For example, 31 columns are used to form 30 safety gate bodies to protect the entire 500-meter platform. The width of each safety gate body is about 16 meters, which means the length of the rope is about 16 meters. This application only uses one platform safety gate body as an example for explanation, but all gate bodies on the entire platform are tested for breakage at the same time.

[0042] Of course, there should be at least two guy ropes between the two pillars. The distance between any two guy ropes should not be greater than the emergency passage distance for a person to pass without touching the obstacle (generally around 30cm). The distance between the bottom guy rope and the platform ground should not be greater than the distance between any two guy ropes. For example, there are 6 guy ropes between the two pillars. The bottom guy rope is about 20cm from the ground to prevent suitcases or basketballs from falling off the platform. The distance between any two of the top guy ropes is about 30cm, so that the height of the top guy rope from the ground is 170cm, which can effectively prevent pedestrians from crossing directly (we assume that ordinary passengers are not high jumpers and cannot climb over without touching the guy ropes).

[0043] The safety gate is installed at a certain distance from the platform edge. This distance is to protect personnel behind the ropes when a vehicle exceeds its limits, preventing collisions between people and vehicles. It also prevents people's arms from passing through the gaps between adjacent ropes and colliding with the vehicle when it enters or exits the station. The space between the safety gate and the platform edge is both a redundant space and an intrusion zone. Intrusion into this zone is prohibited except when the vehicle is completely stopped. The ropes in the safety gate are in the lowered state. After the vehicle enters the station and comes to a complete stop, the ropes are raised until the lowest rope is at least 2 meters above the platform ground, allowing pedestrians to pass under the ropes to board or alight from the vehicle. After pedestrians have boarded or alighted, the ropes are lowered again to block pedestrians before the vehicle leaves the station.

[0044] Therefore, the pull ropes of the security door must be kept taut, and a connecting strap should be used between adjacent pull ropes. Connecting the two pull ropes ensures that the long length of the pull rope between the two posts will not sag significantly. It also prevents someone from deliberately spreading the two pull ropes and passing through the security door between them to reach the intrusion area. Of course, the security of the security door depends on the pull ropes not breaking. If one pull rope breaks, a large passage space will be created at the break point, and someone may take the opportunity to pass through the security door to reach the intrusion area.

[0045] This invention discloses a method for detecting the safety rope in a pull-cord safety door, which aims to prevent passengers from crossing the safety door and reaching the intrusion area when the pull rope breaks. The method includes the following steps:

[0046] S1: Determine if the tension value on the connecting belt is not less than the first preset value; if yes, proceed to step S2; otherwise, do not perform the operation.

[0047] To explain, all the pull ropes in a safety door are of the same specification and are taut between two posts. Therefore, theoretically, the stress on all the pull ropes between the two posts is roughly the same. Furthermore, the spacing between any two adjacent pull ropes is also the same. The connecting strap is a flexible component with adjustable tension, and the connecting straps are also of the same specification. Before executing step S1, the tension of all connecting straps is adjusted to be the same, so that the tension on each connecting strap is also roughly the same.

[0048] If the tension value on a connecting belt is too high and not less than the first preset value, then at least one pull rope has abnormal tension and needs further inspection, and step S2 is executed.

[0049] It should be noted that in this invention, when performing step S1, the tensile force value on the connecting belt needs to be limited to a specific location on the connecting belt, and the location for obtaining the tensile force value for all connecting belts should be the same. It is best to obtain the tensile force value at the very top of all connecting belts (i.e., the connection point between the connecting belt and the pull rope above the connecting belt). In this way, the tensile force value on the connecting belt is equal to the sum of the weight of the connecting belt and the tensile force generated when the pull rope sways. Moreover, when the pull rope is taut, the tensile force value on the connecting belt is almost equal to the weight of the connecting belt itself. Furthermore, both ends of the connecting belt are fixedly connected to the pull rope, so that even if the pull rope sways and breaks, the connecting belt can still hold the pull rope below it. In this way, the connecting belt also carries the broken pull rope, providing a certain degree of protection. At the same time, the change in the tensile force of the connecting belt makes it easier to determine the rope breakage.

[0050] The definition of the first preset value is important. The first preset value is the sum of the minimum weight of the pull rope and the weight of the connecting strap itself. The tension at the connecting strap when the pull rope is not kept horizontal and taut means that there are two pull ropes. The first pull rope at the top is horizontally set and taut between the two pillars, and the second pull rope at the bottom breaks at some point, causing the pull rope to droop naturally (by default, the pull rope droops completely and generates its full weight). The connecting strap is precisely connected between these two pull ropes. At this time, the weight generated by the pull rope will be suspended on the connecting strap, making the tension value on the connecting strap larger. The first preset value is the tension value of the connecting strap when simulating all the break points of the lower pull rope and the minimum weight effect on the connecting strap.

[0051] If the tension value on the connecting belt is not less than the first preset value, then there must be an abnormal tension at at least one pull rope, which has exceeded the natural state of the pull rope, and further testing is required. Step S2 should be executed.

[0052] S2: Determine if the tension value on the connecting belt is not greater than the second preset value at the same time; if so, issue a rope break alarm; otherwise, do not perform the operation.

[0053] When the tension value on the connecting strap is not less than the first preset value, besides the pull rope breaking, there are two other possibilities: either the pull rope was pulled by a passenger, or the two ends of the pull rope did not rise and fall synchronously during the raising and lowering of the safety door, causing the pull rope to tilt. In fact, regardless of which of the two possibilities, the pull rope itself has been displaced, causing the tension value at the connecting strap to change. Among them, the passenger's pulling of the pull rope, causing the tension value on the connecting strap to be not less than the first preset value, has exceeded the limit of the behavior of "normally holding the pull rope" and is considered violent pulling. Moreover, it is impossible for one person to pull all the pull ropes at the same time. In order to avoid the above possible interference, it is necessary to further verify whether the safety door pull rope is broken.

[0054] Specifically, it is determined whether the tension value on the connecting belt is not greater than the second preset value; that is, if the tension value on the connecting belt is small, which is a tension value beyond the normal tension value under the condition of the pull rope itself swaying, then it means that there is a problem with a pull rope. At this time, the pull rope has serious uneven stress, rather than the "still stable" structure of the pull rope being uniformly tilted. The situation of "the pull rope tilting due to the lack of synchronous lifting and lowering at both ends when the safety door is raised and lowered" can be directly ruled out. Then, a rope breakage alarm needs to be issued for the pull rope abnormality mentioned in step S1.

[0055] It is important to note that there is a simultaneous relationship here. That is, while the tension value on the connecting belt in step S1 is not less than the first preset value, there is also a situation where the tension value on the connecting belt in step S2 is not greater than the second preset value. In other words, there are two situations at the same time: the connecting belt is under abnormally high tension and the connecting belt loses its load. At this time, it is necessary to issue a rope breakage alarm in time, notify the platform staff to inspect, and further determine whether the rope is broken and whether repair is needed.

[0056] The definition of the second preset value is also important. The second preset value is the tension value of the connecting belt when it loses its load. That is, there are two ropes. The first rope at the top is horizontally set between two columns but is not taut. The second rope at the bottom is horizontally set between two columns and is taut. The connecting belt is connected between these two ropes. The middle of the first rope sags down and the amount of sag is exactly the preset safe displacement of the platform. Then, the tension value at the connecting belt at this time is the second preset value. That is, if the tension value on the connecting belt is not greater than the second preset value, it means that the displacement of the rope above the connecting belt exceeds the preset safe displacement, and there is abnormal behavior.

[0057] Based on the definitions of the first and second preset values, it is clear that the first preset value is greater than the weight of the connecting belt itself, and the second preset value is less than the weight of the connecting belt itself. Therefore, the first preset value is greater than the second preset value.

[0058] In summary, in step S1, the tension value on the connecting strip is not less than the first preset value, which is to monitor the abnormal tension of the connecting strip above the broken rope. In step S2, the tension value on the connecting strip is not greater than the second preset value, which is to monitor the abnormal tension of the connecting strip below the broken rope, thus effectively determining the rope breakage.

[0059] Unfortunately, the above detection method still cannot rule out the possibility that "the rope is being pulled by a passenger." However, this does not affect the alarm issued by this method. If "the rope is being pulled by a passenger" and this results in both "the tension value on the connecting strap is not less than the first preset value" and "the tension value on the connecting strap is not greater than the second preset value," it exceeds the safety limit for passengers to normally touch the rope. There is a risk of deliberately damaging the safety door. The rope break alarm will be issued in time. Passengers in this situation can also be reminded to stop violently pulling on the rope.

[0060] In summary, any abnormality in the safety door pull rope can be effectively addressed immediately, thus preventing the risk of passengers taking advantage of the rope breakage to pass through the safety door.

[0061] This invention discloses a method for detecting the safety of pull ropes in a pull rope safety gate. A flexible connecting strip is connected between two adjacent pull ropes. When the tension value on one connecting strip is very high while the tension value on the other connecting strip is very low, it is considered that there is a risk of pull rope breakage, and a rope breakage alarm is issued to remind staff to eliminate the risk and prevent anyone from taking the opportunity to pass through the safety gate, thus ensuring that the safety gate has a high level of security.

[0062] Example 2, still as Figure 1 As shown, this is only one embodiment of the present invention. Based on the first embodiment, in the pull rope safety detection method of the present invention, the safety gate column is provided with a slider for connecting to the end of the pull rope and a motor for driving the slider to slide, and the column is provided with a controller.

[0063] Before executing step S1, establish electrical connections between the controllers on the columns at both ends of the safety gate and obtain the lifting stroke positions of the two sliders at both ends of the pull rope in real time. Control the motor to ensure that the height difference between the two ends of the pull rope is not greater than the third preset difference value. This ensures that both ends of each pull rope are at the same height, and the two ends of the pull rope are synchronously raised and lowered in real time when the safety gate is raised and lowered, and the pull rope is in a horizontal tension setting.

[0064] Furthermore, a tension sensor is provided on the connecting strip; the tension sensor is electrically connected to the controller;

[0065] Therefore, when performing steps S1 and S2, the controller obtains the tension value on the connecting belt through the tension sensor.

[0066] In this invention, before performing step S1, a first preset value is generated based on the length and material of the pull rope;

[0067] Before performing step S2, a second preset value is generated based on the length and material of the pull rope.

[0068] It should be noted that at least one connecting strap is installed between any two adjacent pull ropes, and the distance between each connecting strap and the post is different. Furthermore, the distance between the connecting strap and the posts at both ends is also different (i.e., the connecting strap is not installed in the exact middle of the pull rope).

[0069] Therefore, when performing step S1, the first preset value on each connecting strip is different;

[0070] When performing step S2, the second preset value on each connecting strip is different.

[0071] Based on this, when executing step S2, specifically: determine whether there is a tension value on the connecting belt that is not less than the first preset value and at the same time there is a tension value on the connecting belt that is not greater than the second preset value, and maintain it for a preset time; if so, issue a rope breakage alarm; otherwise, do not perform the operation.

[0072] This means that for a continuous period of time, both "the tension value on the connecting belt is not less than the first preset value" and "the tension value on the connecting belt is not greater than the second preset value" will occur simultaneously, thus avoiding...

[0073] Here, when performing step S1, the connecting strip with a tensile force value not less than the first preset value is marked as the first connecting strip;

[0074] When performing step S2, the connecting strip with a tensile force value not greater than the second preset value is marked as the second connecting strip;

[0075] When performing step S2, a preset time value is generated based on the distance between the first connecting strip and the second connecting strip.

[0076] Specifically, when executing step S2, if both "the tension value on the connecting belt is not less than the first preset value" and "the tension value on the connecting belt is not greater than the second preset value" occur simultaneously, the distance between the first and second connecting belts is immediately obtained, a preset time value is generated, and timing is performed. If the above-mentioned "the tension value on the connecting belt is not less than the first preset value" and "the tension value on the connecting belt is not greater than the second preset value" continue for the preset time value, then it is determined that it is impossible for "the pull rope to be pulled by a passenger", and a rope breakage alarm is issued. Conversely, if neither "the tension value on the connecting belt is not less than the first preset value" nor "the tension value on the connecting belt is not greater than the second preset value" occurs simultaneously, or if both "the tension value on the connecting belt is not less than the first preset value" and "the tension value on the connecting belt is not greater than the second preset value" occur simultaneously but return to normal within a short period of time, then it is the influence of the safety door pull rope for a short period of time, that is, a short-term human pulling, and the pulling has stopped, so there is no need to issue a rope breakage alarm.

[0077] This effectively avoids the impact of a brief, accidental situation where "the rope is grabbed and pulled by a passenger," further ensuring the accuracy of the rope breakage risk assessment and preventing false alarms.

[0078] Similarly, this can further avoid the impact of a short-lived, accidental situation where "the pull rope does not move synchronously at both ends when the safety gate is raised or lowered, causing the pull rope to tilt," thus further ensuring the accuracy of the pull rope breakage risk assessment and avoiding false alarms.

[0079] Finally, an alarm is installed on the column; a timer is installed on the controller;

[0080] When performing step S2, if both "the tension value on the connecting belt is not less than the first preset value" and "the tension value on the connecting belt is not greater than the second preset value" occur simultaneously, the timer will start timing;

[0081] When performing step S2, a rope break alarm is triggered by the alarm.

[0082] Example 3, still as Figure 1 As shown, this is only one embodiment of the present invention. Under the premise that the distance between each connecting strip and the column is different and the distance between the connecting strip and the columns at both ends is also different, we will give examples and explanations of the first preset value and the second preset value.

[0083] For example, there are only two pull ropes, a first pull rope at the top and a second pull rope at the bottom. The length of the pull ropes, which is the distance between the two posts, is 3L. A connecting strap is installed between the two pull ropes. The upper and lower ends of the connecting strap are fixedly connected to the two pull ropes respectively. The distance from the connecting strap to the left post is L, and the distance from the connecting strap to the right post is 2L.

[0084] If the second rope breaks, and the break point is located on the left side (shorter side) of the connecting belt, then the connecting belt and the right-side column simultaneously fix the second rope on the right. The weight of the rope on the right side of the connecting belt is 2G, and the connecting belt and the right-side column each bear the downward pull generated by the weight of G. The weight of the rope on the left side of the connecting belt is G. The weight generated by the part of the second rope that breaks closer to the connecting belt is entirely borne by the connecting belt. If the break point is infinitely close to the connecting belt, then the weight of the rope on the left side of the connecting belt bearing on the connecting belt approaches zero, and the tensile force on the connecting belt approaches (G0 + G + 0), where G0 is the weight of the connecting belt itself. If the break point is infinitely close to the left-side column, then the weight of the rope on the left side of the connecting belt bearing on the connecting belt approaches G, and the tensile force on the connecting belt approaches (G0 + G + G).

[0085] If the second pull rope breaks, and the break point is located on the right side (long side) of the connecting belt, then the connecting belt and the left column simultaneously fix the second pull rope on the left. The weight of the pull rope on the left side of the connecting belt is G. The connecting belt and the right column each bear a downward pull force generated by the weight of 0.5*G. The weight of the pull rope on the right side of the connecting belt is 2G. The weight generated by the part of the second pull rope that breaks closest to the connecting belt is entirely borne by the connecting belt. If the break point is infinitely close to the connecting belt, then the weight of the pull rope on the right side of the connecting belt bearing on the connecting belt approaches zero, and the pull force on the connecting belt approaches (G0 + 0.5*G + 0), where G0 is the weight of the connecting belt itself. If the break point is infinitely close to the right column, then the weight of the pull rope on the right side of the connecting belt bearing on the connecting belt approaches 2G, and the pull force on the connecting belt approaches (G0 + 0.5*G + 2G).

[0086] The minimum tensile force on the connecting belt caused by the breakage of the second pull rope is the first preset value, that is, the breakage point is located on the right side of the connecting belt and infinitely close to the connecting belt. At this time, the first preset value is (G0 + 0.5 * G). Once the tensile force on the connecting belt exceeds this value, it is considered an abnormal tensile force.

[0087] Similarly, the first preset value is the tension value on the connecting strip when the rope breaks near the connecting strip on one side of the maximum horizontal extension length range.

[0088] Considering that the distance between each connecting strip and the column is different, the first preset value on each connecting strip is different when performing step S1; and the second preset value on each connecting strip is different when performing step S2.

[0089] If the first pull rope breaks, regardless of where the break is located, the first pull rope will shift downwards, and the displacement distance will exceed the preset safe displacement value. At this time, since the connecting belt is a flexible component, the connecting belt will tilt and bend away from the break location of the first pull rope, and the upper end of the connecting belt will drop. At this time, the connection point between the lower end of the connecting belt and the second pull rope will bear part of the weight of the connecting belt. The tension borne by the upper end of the connecting belt will be less than the weight of the connecting belt, and less than the "connecting belt bearing tension value" when the first pull rope has the maximum downward bending deformation displacement before it breaks.

[0090] This invention discloses a method for detecting the safety of pull ropes in a pull rope safety gate. A flexible connecting strip is connected between two adjacent pull ropes. When the tension value on one connecting strip is very high while the tension value on the other connecting strip is very low, it is considered that there is a risk of pull rope breakage, and a rope breakage alarm is issued to remind staff to eliminate the risk and prevent anyone from taking the opportunity to pass through the safety gate, thus ensuring that the safety gate has a high level of security.

[0091] Example 4: This application also provides an apparatus including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor is installed on an existing safety door and executes the computer program, it implements the rope safety detection method for a rope safety door provided by any of the embodiments in Examples 1 to 3.

[0092] Example 5: This application provides a computer storage medium storing a computer program, which includes program instructions. When executed by a processor, the program instructions can implement a rope safety detection method for a rope safety gate according to any one of Examples 1 to 3.

[0093] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0094] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0095] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some service interfaces; indirect couplings or communication connections between devices or units may be electrical or other forms.

[0096] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0097] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0098] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned memory includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0099] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0100] The foregoing description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of embodiments of this disclosure upon considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described herein. The specification and embodiments are to be considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

Claims

1. A method for detecting the safety of a pull rope in a pull rope safety gate, used in a pull rope safety gate structure, the structure comprising a plurality of columns and a safety gate formed by a plurality of liftable pull ropes disposed between two adjacent columns, wherein a connecting strap connects two adjacent pull ropes; Its features are, The method includes the following steps: S1: Determine if the tension value on the connecting belt is not less than the first preset value; if yes, proceed to step S2; otherwise, do not perform the operation. S2: Determine if the tension value on the connecting belt is not greater than the second preset value at the same time; if so, issue a rope break alarm; otherwise, do not perform the operation. The first preset value is greater than the second preset value.

2. The method for detecting the safety of a pull rope in a pull rope safety door according to claim 1, characterized in that: The safety gate's upright is equipped with a slider for connecting to the end of the pull rope and a motor for driving the slider to slide, and a controller is also provided on the upright. Before executing step S1, establish electrical connections between the controllers on the columns at both ends of the safety gate, and obtain the lifting stroke positions of the two sliders at both ends of the pull rope in real time. Control the motor to ensure that the height difference between the two ends of the pull rope is not greater than the preset difference value.

3. The method for detecting the safety of a pull-rope safety door according to claim 2, characterized in that: A tension sensor is installed on the connecting strip; the tension sensor is electrically connected to the controller; During steps S1 and S2, the controller obtains the tension value on the connecting belt through the tension sensor.

4. The method for detecting the safety of a pull rope in a pull rope safety gate according to claim 1, characterized in that: Before performing step S1, a first preset value is generated based on the length and material of the pull rope; Before performing step S2, a second preset value is generated based on the length and material of the pull rope.

5. The method for detecting the safety of a pull rope in a pull rope safety gate according to claim 3, characterized in that: At least one connecting strap is installed between any two adjacent pull ropes, and the distance between each connecting strap and the post is different; When performing step S1, the first preset value on each connecting strip is different; When performing step S2, the second preset value on each connecting strip is different.

6. The method for detecting the safety of a pull rope in a pull rope safety gate according to claim 5, characterized in that: When performing step S2, the specific steps are as follows: Determine whether there is a tension value on a connecting belt that is not less than a first preset value and at the same time, a tension value on a connecting belt that is not greater than a second preset value, and maintain this for a preset time; if so, issue a rope breakage alarm; otherwise, do not perform any operation.

7. The method for detecting the safety of a pull-rope safety gate according to claim 6, characterized in that: When performing step S1, the connecting strip with a tensile force value not less than the first preset value is marked as the first connecting strip; When performing step S2, the connecting strip with a tensile force value not greater than the second preset value is marked as the second connecting strip; When performing step S2, a preset time value is generated based on the distance between the first connecting strip and the second connecting strip.

8. The method for detecting the safety of a pull rope in a pull rope safety door according to claim 1, characterized in that: An alarm is installed on the column; When performing step S2, a rope break alarm is triggered by the alarm.

9. The method for detecting the safety of a pull rope in a pull rope safety door according to claim 1, characterized in that: The connecting strap is a flexible component with adjustable tension; Before performing step S1, adjust the tension of all connecting straps to be the same.

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