A tower crane safety monitoring method, device and system

Abstract

The application relates to the technical field of safety control, and discloses a tower crane safety monitoring method, device and system, which comprises the following steps: acquiring a preset safety threshold; acquiring to-be-detected information; analyzing the to-be-detected information according to the safety threshold; and performing safety early warning according to the analysis result. Compared with the prior art, the application provides a tower crane safety monitoring method, uses a sensor to detect the state of a tower crane, performs safety early warning when the state of the tower crane reaches the safety threshold, and stops the operation of the tower crane when the safety early warning duration reaches a preset time, so that the situation that an operator makes a judgment error due to an operation mistake in a traditional detection method using human eyes is avoided, the safety of the tower crane operation under the condition that the operator fails to timely feed back the safety early warning is ensured, and the safety of the tower crane operation is improved.

Description

Technical Field

[0001] This invention relates to the technical field of safety control, and in particular to a method, device and system for monitoring the safety of tower cranes. Background Technology

[0002] Tower cranes, also known as tower hoists, are construction devices used in the construction of high-rise buildings. They are mainly used for the vertical and horizontal transport of building materials and the installation of building components.

[0003] Since tower cranes are typically used for high-altitude operations, their safety must be taken seriously. In the current technology, the safety of tower crane operations is usually ensured by the operator's visual observation and experience judgment. However, there are potential safety hazards caused by operator fatigue or mistakes. Summary of the Invention

[0004] The purpose of this invention is to provide a tower crane safety monitoring method, device and system, which aims to solve the problem of safety hazards caused by operator error in the prior art.

[0005] The present invention is implemented as follows: In a first aspect, the present invention provides a tower crane safety monitoring method, comprising:

[0006] Obtain a pre-set safety threshold; the safety threshold includes the tower crane's movement speed limit, the distance limit between the tower crane and the obstacle, and the angle limit between the tower crane trolley and the sling;

[0007] The detection information includes the tower crane's speed, the distance between the tower crane and the obstacle, and the angle between the tower crane trolley and the sling; the detection information is acquired by sensors installed on the tower crane.

[0008] The information to be detected is analyzed based on the security threshold.

[0009] A security warning will be issued based on the analysis results.

[0010] In one embodiment, the setting of security thresholds includes a secondary security threshold and a primary security threshold.

[0011] In one embodiment, the movement speed of the tower crane includes the jib rotation speed of the tower crane; the jib rotation speed of the tower crane ω=ω0+αt, where ω0 is the initial rotation speed and α is the acceleration.

[0012] In one embodiment, the angle between the tower crane trolley and the sling includes:

[0013] The position information of the tower crane trolley is obtained; the position information of the tower crane trolley is obtained by a sensor installed at the connection between the tower crane trolley and the sling, and the position information is r(x1,y1,z1);

[0014] The state information of the sling is obtained; the state information of the sling is obtained by a sensor set at a preset distance from the tower crane trolley, and the state information is r(x2,y2,z2);

[0015] The angle between the tower crane trolley and the sling is calculated based on the position information and the status information; the formula for calculating the angle is cos θ=(x1x2+y1y2+z1z2) / [ ].

[0016] In one embodiment, analyzing the information to be detected based on the security threshold includes:

[0017] The information to be detected is compared with the security threshold;

[0018] If the information to be detected does not reach the secondary security threshold, then the analysis result is safe;

[0019] If the information to be detected reaches the level 2 safety threshold, then the analysis result is level 2 hazard;

[0020] If the information to be detected reaches the Level 1 safety threshold, then the analysis result is Level 1 danger.

[0021] In one embodiment, the step of issuing a security warning based on the analysis results includes:

[0022] If the analysis results are safe, no security warning will be issued;

[0023] If the analysis result indicates a level 2 hazard, a level 2 safety warning will be issued.

[0024] If the analysis results indicate a Level 1 hazard, a Level 1 safety warning will be issued.

[0025] In one embodiment, the security warning includes:

[0026] Warnings include signal indicator lights, voice alerts, and specific numerical values.

[0027] In one embodiment, the security warning includes:

[0028] If the Level 1 safety warning continues for a preset time, the tower crane will be automatically stopped.

[0029] In a second aspect, the present invention provides a tower crane safety monitoring device, comprising:

[0030] Information calculation unit; the information calculation unit is used to obtain a pre-set security threshold;

[0031] Information acquisition unit; the information acquisition unit is used to acquire the information to be detected;

[0032] Information detection unit; the information detection unit is used to analyze the information to be detected according to the security threshold;

[0033] Early warning unit; the early warning unit is used to issue a safety warning based on the analysis results.

[0034] Thirdly, the present invention provides a tower crane safety monitoring system, the tower crane safety system including a speed sensor, a distance sensor, a position sensor and a terminal, the terminal including the tower crane safety device as described above.

[0035] Compared with existing technologies, this invention provides a tower crane safety monitoring method that uses sensors to detect the status of the tower crane. When the status of the tower crane reaches a safety threshold, a safety warning is issued, and the tower crane automatically stops operating when the safety warning lasts for a preset time. This avoids the situation of incorrect judgment due to operator error in traditional detection methods that use human eyes, and ensures the safety of tower crane operation even if the operator fails to respond to the safety warning in a timely manner, thereby increasing the safety of tower crane operation. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a tower crane safety monitoring method provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram illustrating the specific process of obtaining the angle between the tower crane trolley and the sling in step S2 of a tower crane safety monitoring method provided in an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the specific process of step S3 in a tower crane safety monitoring method provided in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of step S4 of a tower crane safety monitoring method provided in an embodiment of the present invention.

[0040] Figure 5 This is a tower crane safety monitoring device provided in an embodiment of the present invention.

[0041] Figure 6 This is a tower crane safety monitoring system provided in an embodiment of the present invention. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0043] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0045] See Figure 1 The diagram shown is a flowchart of a tower crane safety monitoring method provided in the first embodiment of the present invention.

[0046] This invention provides a tower crane safety monitoring method, comprising the following steps:

[0047] Step S1: Obtain the pre-set security threshold.

[0048] Specifically, the safety threshold is the basis for judging whether a tower crane is safe to operate; more specifically, the safety threshold includes two aspects: the speed limit of the tower crane and the distance limit between the tower crane and obstacles.

[0049] More specifically, the safety thresholds include secondary safety thresholds and primary safety thresholds; more specifically, the standard for secondary safety thresholds is that the tower crane is in a state close to a dangerous state, and the standard for primary safety thresholds is that the tower crane is in a dangerous state.

[0050] It is understandable that when the tower crane's speed reaches a certain level, the tower crane is in an unsafe state; similarly, when the tower crane is a certain distance from an obstacle, the tower crane is also in an unsafe state.

[0051] More specifically, the safety threshold includes two aspects: the speed limit of the tower crane and the distance limit between the tower crane and the obstacle. It is understandable that when the speed of the tower crane reaches a certain limit, it will affect the object lifted by the tower crane, such as causing the tower crane's slings to break. When the tower crane is too close to the obstacle, it will cause the tower crane to collide with the obstacle.

[0052] Step S2: Obtain the information to be detected.

[0053] Specifically, the information to be detected is used to compare with a safety threshold to determine whether the tower crane is in a safe or dangerous state. Therefore, the data contained in the information to be detected is consistent with the data contained in the safety threshold, namely the tower crane's speed and the distance between the tower crane and the obstacle.

[0054] More specifically, the information to be detected is acquired by sensors, including speed sensors, distance sensors, and position sensors. Speed ​​sensors are installed on the boom of the tower crane to detect the rotation speed of the boom. Distance sensors are installed at preset distances on both sides of the boom to detect the distance between the tower crane and obstacles. Position sensors are installed on the trolley of the tower crane and on the sling at a preset distance from the trolley, and the angle between the trolley and the sling is calculated by detecting the position information of the two positions.

[0055] Step S3: Analyze the information to be detected based on the safety threshold.

[0056] Specifically, after obtaining the tower crane's detection information, it is compared and analyzed with a pre-set safety threshold; more specifically, when the detection information does not reach the safety threshold, the analysis result is safe, and when the detection information reaches the safety threshold, the analysis result is dangerous.

[0057] Understandably, to ensure the effectiveness of the early warning, the analysis of the detection information is a quick and immediate operation.

[0058] More specifically, in this embodiment, the safety threshold is divided into two levels: a secondary safety threshold and a primary safety threshold. It can be understood that when the tower crane is in a state close to risk, the information to be detected reaches the secondary safety threshold, and when the tower crane is in a state of risk, the information to be detected reaches the primary safety threshold. By setting two levels of risk thresholds, a buffer zone is set up for the operator to deal with the risk state, which can effectively increase the operator's ability to deal with the risk state and avoid the situation where the operator fails to deal with the risk in a timely manner.

[0059] Step S4: Issue a security warning based on the analysis results.

[0060] Specifically, if the analysis result is safe, no safety warning will be issued; if the analysis result is dangerous, a safety warning will be issued. Understandably, to ensure the effectiveness of the warning, the safety warning is a quick and immediate operation.

[0061] More specifically, the safety threshold is set at two levels, so the danger level corresponding to the analysis results is also divided into two levels, and the safety warning method for each level is different; it is understandable that the safety warning when the information to be detected reaches the first level safety threshold is more noticeable than the safety warning when the second level safety threshold is reached.

[0062] More specifically, if the safety alarm at the first-level safety threshold lasts for a preset time and the operator does not lower the tower crane below the first-level safety threshold, the tower crane will automatically stop to avoid danger.

[0063] In this embodiment, the present invention provides a tower crane safety monitoring method that uses sensors to detect the status of the tower crane. When the status of the tower crane reaches a safety threshold, a safety warning is issued, and when the duration of the safety warning reaches a preset time, the tower crane automatically stops operating. This avoids the situation of incorrect judgment due to operator error in traditional detection methods that use human eyes, and ensures the safety of tower crane operation even if the operator fails to respond to the safety warning in a timely manner, thereby increasing the safety of tower crane operation.

[0064] See Figure 2 As shown, Figure 2 This is a schematic diagram illustrating the specific process of obtaining the angle between the tower crane trolley and the sling in step S2 of a tower crane safety monitoring method provided in the second embodiment of the present invention.

[0065] Step S21: Obtain the position information of the tower crane trolley.

[0066] Specifically, a position sensor is installed at the connection point between the tower crane trolley and the sling. The position sensor acquires the position information of the tower crane trolley, which is recorded as r(x1,y1,z1).

[0067] It is understandable that the position of the tower crane trolley connected to the sling and the relative position of the tower crane trolley are fixed. Therefore, a position sensor can be set up at this point to record the position information as r(x1,y1,z1), and the position information at this point can be used to represent the position information of the tower crane trolley.

[0068] Step S22: Obtain the status information of the sling.

[0069] Specifically, the status information of the sling is obtained by the sling position sensor set at a preset distance from the tower crane trolley, and its status information is recorded as r(x2,y2,z2).

[0070] It is understandable that the sling is a long straight line segment, and its status information can be recorded by recording the position information of a fixed point on it; more specifically, a position sensor is set at a preset distance between the sling and the tower crane trolley, and the position information at that point is recorded as r(x2,y2,z2), which represents the status information of the sling.

[0071] Step S23: Calculate the angle between the tower crane trolley and the sling based on the position and status information.

[0072] Specifically, the position information of the tower crane trolley is recorded as r(x1,y1,z1), the position information of the sling is recorded as r(x1,y1,z1), and the formula for calculating the angle between the tower crane trolley and the sling is cosθ=(x1x2+y1y2+z1z2) / [ ].

[0073] In this embodiment, the tower crane's movement speed includes the tower crane's boom rotation speed.

[0074] Specifically, speed sensors are installed on the boom of the tower crane. Since the boom is a fixed structure that is close to a cuboid, the overall movement speed can be detected by detecting the speed at one point on it.

[0075] More specifically, the jib rotation speed of the tower crane is ω = ω0 + αt, where ω0 is the initial rotation speed, α is the acceleration, and t is the rotation time of the jib.

[0076] See Figure 3 As shown, Figure 3 This is a schematic diagram of step S3 of a tower crane safety monitoring method provided in the third embodiment of the present invention.

[0077] Step S31: Compare the information to be detected with the security threshold.

[0078] Specifically, after obtaining the information to be detected, it is compared with the safety threshold to obtain the analysis results; more specifically, the safety threshold is divided into a secondary safety threshold and a primary safety threshold. The secondary safety threshold corresponds to the state of the tower crane approaching the risk state, and the primary safety threshold corresponds to the state of the tower crane being in the risk state.

[0079] Understandably, by setting two levels of safety thresholds, a buffer space is created for operators to deal with risks, which can effectively increase operators' ability to cope with risky situations and avoid situations where operators fail to respond to risks in a timely manner.

[0080] Step S32: If the information to be detected does not reach the level 2 security threshold, the analysis result is safe.

[0081] Specifically, when the information to be detected reaches the level 2 safety threshold, it means that the tower crane is in a safe state, and the analysis result is safe.

[0082] A state buffer can effectively increase the operator's ability to cope with risky situations and prevent situations where the operator fails to respond to risks in a timely manner.

[0083] Step S33: If the information to be detected reaches the level 2 safety threshold, the analysis result is level 2 hazard.

[0084] Specifically, when the information to be detected reaches the level 2 safety threshold, it means that the tower crane is approaching a dangerous state, and the analysis result is level 2 danger.

[0085] Understandably, a Level 2 hazard status indicates that the tower crane is in a near-dangerous state. At this point, the operator needs to pay attention to correcting the tower crane's condition to avoid entering a dangerous state.

[0086] Step S34: If the information to be detected reaches the Level 1 safety threshold, the analysis result is Level 1 danger.

[0087] Specifically, when the information to be detected reaches the first-level safety threshold, it indicates that the tower crane is in a dangerous state, and the analysis result is level one danger.

[0088] Understandably, a Level 1 hazard status indicates that the tower crane is in a dangerous state, and the operator needs to pay attention to correcting the tower crane's condition to get it out of danger.

[0089] See Figure 4 As shown, Figure 4 This is a schematic diagram of step S4 of a tower crane safety monitoring method provided in the fourth embodiment of the present invention.

[0090] Step S41: If the analysis result is safe, no safety warning will be issued.

[0091] Specifically, when the analysis result is safe, it means that the tower crane is in a safe state, and no safety warning is required.

[0092] Step S42: If the analysis result is a level 2 hazard, then issue a level 2 safety warning.

[0093] Specifically, when the analysis result is Level 2 danger, it means that the tower crane is close to a dangerous state, and a Level 2 safety warning is issued at this time. It can be understood that the level of alert for a Level 2 safety warning is lower than that for a Level 1 safety warning. The significance of setting up a Level 2 safety warning is to provide operators with a buffer zone between the safe and dangerous states of the tower crane.

[0094] More specifically, the Level 2 safety warning includes both yellow indicator light warnings and alert voice reminders.

[0095] Step S43: If the analysis result indicates a Level 1 hazard, then issue a Level 1 safety warning.

[0096] Specifically, when the analysis result is Level 1 danger, it means that the tower crane is in a dangerous state, and a Level 1 safety warning is issued. It can be understood that the level of alert for a Level 1 safety warning is higher than that for a Level 2 safety warning. The significance of setting a Level 1 safety warning is to remind the operator that the tower crane is in a dangerous state and that the operator should immediately check the status of the tower crane and make adjustments.

[0097] More specifically, the Level 1 safety warning includes red signal indicator lights and dangerous voice alerts.

[0098] In this embodiment, safety warnings include: signal indicator warnings, voice reminder warnings, and specific numerical warnings.

[0099] Specifically, safety warnings are divided into two levels, and therefore the safety content of the two levels is also different; more specifically, in the level two safety warning, the signal indicator light is yellow and the voice reminder is "alert"; in the level one safety warning, the signal indicator light is red and the voice reminder is "danger".

[0100] More specifically, safety warnings also include the display of specific values, such as the real-time display of the tower crane's speed and the distance between the tower crane boom and obstacles, so that the operator can know the status of the tower crane.

[0101] In this embodiment, the safety warning also includes: automatically stopping the tower crane when a level-one safety warning continues for a preset time.

[0102] Specifically, a Level 1 safety warning indicates that the tower crane is in a dangerous state. Operators should avoid keeping the tower crane in a dangerous state for an extended period to reduce the possibility of operational accidents. Understandably, in actual operation, there are instances where operators fail to adjust the tower crane in a dangerous state in a timely manner due to operator error. In this embodiment, if the Level 1 safety warning continues for a preset time, the tower crane will be automatically stopped, thus avoiding situations where operators fail to adjust the tower crane in a dangerous state in a timely manner due to operator error.

[0103] See Figure 5 As shown, Figure 5 This is a tower crane safety monitoring device provided in an embodiment of the present invention.

[0104] This invention provides a tower crane safety monitoring device, comprising:

[0105] Information calculation unit 1; used to obtain a pre-set security threshold;

[0106] Information acquisition unit 2; used to acquire the information to be detected;

[0107] Information detection unit 3; used to analyze the information to be detected according to the security threshold;

[0108] Early warning unit 4; used to provide safety warnings based on analysis results.

[0109] See Figure 6 As shown, Figure 6 This is a tower crane safety monitoring system provided in an embodiment of the present invention.

[0110] The present invention provides a tower crane safety monitoring system, including a speed sensor, a distance sensor, a position sensor, and a terminal, wherein the terminal includes the tower crane safety device described above.

[0111] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for monitoring the safety of tower cranes, characterized in that, include: Obtain a pre-set safety threshold; the safety threshold includes the tower crane's movement speed limit, the distance limit between the tower crane and the obstacle, and the angle limit between the tower crane trolley and the sling; The detection information includes the tower crane's speed, the distance between the tower crane and the obstacle, and the angle between the tower crane trolley and the sling; the detection information is acquired by sensors installed on the tower crane. The information to be detected is analyzed based on the security threshold. A security warning will be issued based on the analysis results. The speed of the tower crane includes the rotation speed of the tower crane's boom; The jib rotation speed of the tower crane is ω = ω0 + αt, where ω0 is the initial rotation speed and α is the acceleration; The angle between the tower crane trolley and the sling includes: The position information of the tower crane trolley is obtained; the position information of the tower crane trolley is obtained by a sensor installed at the connection between the tower crane trolley and the sling, and the position information is r(x1,y1,z1); The state information of the sling is obtained; the state information of the sling is obtained by a sensor set at a preset distance from the tower crane trolley, and the state information is r(x2,y2,z2); The angle between the tower crane trolley and the sling is calculated based on the position information and the status information; the formula for calculating the angle is cos θ=(x1x2+y1y2+z1z2) / [ ]; The information to be detected is acquired by sensors, including speed sensors, distance sensors, and position sensors. Speed ​​sensors are installed on the boom of the tower crane to detect the rotation speed of the boom. Distance sensors are installed at preset distances on both sides of the boom to detect the distance between the tower crane and obstacles. Position sensors are installed on the trolley of the tower crane and on the sling at a preset distance from the trolley, and the angle between the trolley and the sling is calculated by detecting the position information of the two positions.

2. The tower crane safety monitoring method as described in claim 1, characterized in that, The security thresholds include secondary security thresholds and primary security thresholds.

3. The tower crane safety monitoring method as described in claim 2, characterized in that, The step of analyzing the information to be detected based on the security threshold includes: The information to be detected is compared with the security threshold; If the information to be detected does not reach the secondary security threshold, then the analysis result is safe; If the information to be detected reaches the level 2 safety threshold, then the analysis result is level 2 hazard; If the information to be detected reaches the Level 1 safety threshold, then the analysis result is Level 1 danger.

4. The tower crane safety monitoring method as described in claim 1, characterized in that, The provision of security warnings based on the analysis results includes: If the analysis results are safe, no security warning will be issued; If the analysis result indicates a level 2 hazard, a level 2 safety warning will be issued. If the analysis results indicate a Level 1 hazard, a Level 1 safety warning will be issued.

5. The tower crane safety monitoring method as described in claim 3, characterized in that, The security warning includes: Warnings include signal indicator lights, voice alerts, and specific numerical values.

6. The tower crane safety monitoring method as described in claim 3, characterized in that, The security warning includes: If the Level 1 safety warning continues for a preset time, the tower crane will be automatically stopped.

7. A tower crane safety monitoring device, characterized in that, A tower crane safety monitoring method according to any one of claims 1-6 includes: Information calculation unit; the information calculation unit is used to obtain a pre-set security threshold; Information acquisition unit; the information acquisition unit is used to acquire the information to be detected; Information detection unit; the information detection unit is used to analyze the information to be detected according to the security threshold; Early warning unit; the early warning unit is used to issue a safety warning based on the analysis results.

8. A tower crane safety monitoring system, characterized in that, The tower crane safety system includes a speed sensor, a distance sensor, a position sensor, and a terminal, wherein the terminal includes the tower crane safety device as described in claim 7.

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