Device for preventing tower crane from tipping and tower crane

Abstract

The utility model relates to the technical field of safety of hoisting machinery, discloses a device for preventing a tower crane from tipping and the tower crane, and aims to solve the problem that an existing tower crane tipping prevention scheme is poor in effectiveness and safety. According to the scheme, the tower crane rotation control system mainly comprises a wind speed calibration module, a direction calibration module, a wind speed detection module, a wind direction detection module, a comparison module, a control module and a tower crane rotation control mechanism, the direction calibration module, the wind direction detection module and the comparison module are electrically connected with the control module, and the control module is electrically connected with the tower crane rotation control mechanism. The anti-rollover effectiveness and safety of the tower crane are improved, and the anti-rollover device is particularly suitable for large tower cranes.

Description

Technical Field

[0001] This application relates to the field of lifting machinery safety technology, specifically to a device for preventing tower cranes from tipping over and the tower crane itself. Background Technology

[0002] Tower cranes are lifting equipment used in construction, commonly known as tower cranes or tower hoists. A major cause of tower crane overturning is strong winds, especially extreme weather such as typhoons, tornadoes, and storms, which can easily lead to instability and overturning.

[0003] In existing technologies, to prevent tower cranes from tipping over, when the tower crane is not in operation for extended periods, a wind vane control method is used to release the slewing motor, allowing the jib to rotate freely with the wind and adjust to the windward direction, reducing wind resistance and thus preventing tipping. However, this is a passive method. While the tower crane is rotating with the wind, the jib and counterweight still bear the uncertain risks associated with wind resistance. Because tower cranes are specialized equipment with increasingly stringent safety requirements, existing anti-tipping solutions cannot effectively and proactively position the tower crane on the lowest windward side, and their safety is relatively poor. Utility Model Content

[0004] This application aims to address the problem that existing tower crane anti-tipping solutions are ineffective and unsafe, and proposes a device and tower crane for preventing tower crane tipping.

[0005] The technical solution adopted by this application to solve the above-mentioned technical problems is:

[0006] In a first aspect, this application provides a device for preventing tower cranes from tipping over. The device includes a wind speed calibration module, a direction calibration module, a wind speed detection module, a wind direction detection module, a comparison module, a control module, and a tower crane slewing control mechanism. The wind speed calibration module and the wind speed detection module are electrically connected to the comparison module, the direction calibration module, the wind direction detection module, and the comparison module are electrically connected to the control module, and the control module is electrically connected to the tower crane slewing control mechanism.

[0007] The wind speed calibration module is used to determine the calibration wind speed in the current environment. The direction calibration module is used to determine the calibration direction corresponding to the tower crane's rotation azimuth angle. The wind speed detection module is used to detect the current wind speed. The wind direction detection module is used to detect the current wind direction. The comparison module is used to output a high-level signal when the current wind speed is greater than the calibration wind speed. The control module is configured to generate a tower crane control signal based on the current wind direction and the calibration direction when the comparison module outputs a high-level signal. The tower crane slewing control mechanism is used to control the tower crane's rotation based on the tower crane control signal.

[0008] Furthermore, the wind speed calibration module includes an environmental detection unit and a first control unit, wherein the environmental detection unit is electrically connected to the first control unit;

[0009] The environmental detection unit is used to detect environmental data, and the first control unit is configured to determine the calibration wind speed corresponding to the environmental data.

[0010] Furthermore, the direction calibration module includes an azimuth angle detection unit and a second control unit, wherein the azimuth angle detection unit is electrically connected to the second control unit;

[0011] The azimuth angle detection unit is used to detect the rotation azimuth angle of the tower crane, and the second control unit is configured to determine the calibration direction corresponding to the rotation azimuth angle of the tower crane.

[0012] Furthermore, the rotation azimuth angle of the tower crane is the rotation azimuth angle of the tower crane's boom or counterweight boom.

[0013] Furthermore, the tower crane slewing control mechanism includes a slewing motor and a slewing brake, which are electrically connected to the control module.

[0014] Secondly, this application provides a tower crane that includes the anti-tipping device as described in the first aspect.

[0015] The beneficial effects of this application are as follows: The anti-tower crane overturning device and tower crane provided by this application, after applying the corresponding existing software method, determine the calibrated wind speed and the current wind speed, as well as the calibrated azimuth angle and the current wind direction of the tower crane. When the current wind speed exceeds the calibrated wind speed that affects the safety of the tower crane, the tower crane rotation is controlled so that the minimum windward surface of the tower crane is kept parallel to the current wind direction, so that the tower crane is minimally affected by wind resistance, effectively preventing the tower crane from overturning and improving the safety of the tower crane. Attached Figure Description

[0016] Figure 1 A schematic diagram of a device for preventing tower cranes from tipping over, provided in an embodiment of this application;

[0017] Figure 2 A schematic diagram of the structure of a wind speed calibration module provided in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the structure of a direction calibration module provided in an embodiment of this application;

[0019] Explanation of reference numerals in the attached figures:

[0020] 100-Wind speed calibration module; 101-Environmental detection unit; 102-First control unit; 200-Direction calibration module; 201-Azimuth angle detection unit; 202-Second control unit; 300-Wind speed detection module; 400-Wind direction detection module; 500-Comparison module; 600-Control module; 700-Tower crane slewing control mechanism. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0022] Figure 1 A schematic diagram of a device for preventing tower cranes from tipping over is shown. Please refer to [link / reference]. Figure 1 The device includes a wind speed calibration module 100, a direction calibration module 200, a wind speed detection module 300, a wind direction detection module 400, a comparison module 500, a control module 600, and a tower crane slewing control mechanism 700. The wind speed calibration module 100 and the wind speed detection module 300 are electrically connected to the comparison module 500, the direction calibration module 200, the wind direction detection module 400, and the comparison module 500 are electrically connected to the control module 600, and the control module 600 is electrically connected to the tower crane slewing control mechanism 700.

[0023] Please see Figure 2 In this embodiment, the wind speed calibration module 100 is used to determine the calibration wind speed under the current environment. The wind speed calibration module 100 includes an environmental detection unit 101 and a first control unit 102, wherein the environmental detection unit 101 is electrically connected to the first control unit 102. The environmental detection unit 101 is used to detect environmental data, and the first control unit 102 is configured to determine the calibration wind speed corresponding to the environmental data.

[0024] In practical applications, the environmental detection unit 101 may include a temperature detection unit, a humidity detection unit, and an air pressure detection unit. The first control unit 102 is an MCU, i.e., a microprocessor controller, but it is not limited to this; the first control unit 102 may also be a central processing unit or other processors with processing and computing functions. The first control unit 102 pre-stores a first correspondence table between temperature, humidity, air pressure, and calibrated wind speed, wherein the calibrated wind speed refers to the wind speed threshold that affects the safety of the tower crane, set according to the environment.

[0025] After applying the corresponding software method, the environmental detection unit 101 sends the detected environmental data to the first control unit 102, and the first control unit 102 determines the calibration wind speed corresponding to the environmental data according to the stored first correspondence table.

[0026] It should be noted that the first control unit 102 determines the calibration wind speed corresponding to the environmental data according to the first correspondence table. In essence, it realizes the table lookup function through the controller. The computer software program involved in the implementation of this function is a technology known to those skilled in the art. It is not an improvement of this device and will not be described in detail here.

[0027] Please see Figure 3 In this embodiment, the direction calibration module 200 is used to determine the minimum windward surface of the tower crane and its corresponding calibration direction. The direction calibration module 200 includes an azimuth angle detection unit 201 and a second control unit 202, which are electrically connected. The azimuth angle detection unit 201 is used to detect the rotation azimuth angle of the tower crane, and the second control unit 202 is configured to determine the calibration direction corresponding to the rotation azimuth angle of the tower crane.

[0028] In practical applications, the azimuth detection unit 201 can be an azimuth detection sensor, such as a gyroscope, used to detect the rotation azimuth angle of the tower crane's boom or counterweight boom. The second control unit 202 is an MCU (Microcontroller Unit), but is not limited to it; it can also be a central processing unit or other processors with processing and computational functions. The second control unit 202 pre-stores a second correspondence table between azimuth angles and calibration directions, where the calibration direction refers to the current minimum windward direction of the tower crane.

[0029] After applying the corresponding software method, the azimuth detection unit 201 sends the detected rotation azimuth to the second control unit 202, and the second control unit 202 determines the calibration direction corresponding to the rotation azimuth according to the stored second correspondence table.

[0030] It should be noted that the second control unit 202 determines the calibration wind direction corresponding to the rotation azimuth angle of the tower crane according to the second correspondence table. In essence, it realizes the table lookup function through the controller. The computer software program involved in the realization of this function is a technology known to those skilled in the art. It is not an improvement of this device and will not be described in detail here.

[0031] In this embodiment, the wind speed detection module 300 and the wind direction detection module 400 can be an anemometers capable of simultaneously detecting wind speed and wind direction, which are used to detect the current wind speed and current wind direction in the tower crane environment.

[0032] In this embodiment, the comparison module 500 can be a comparator, which is used to compare the current wind speed with the rated wind speed. When the current wind speed is greater than the rated wind speed, it indicates that the tower crane may be at risk of tipping over.

[0033] In this embodiment, the control module 600 is an MCU, i.e., a microprocessor controller, but it is not limited to this. The control module 600 can also be a central processing unit or other processors with processing and computing functions.

[0034] In this embodiment of the application, the tower crane slewing control mechanism 700 includes a slewing motor and a slewing brake. When the slewing motor is started, it drives the tower crane's boom and counterweight boom to rotate. When the slewing brake is started, it brakes and fixes the tower crane's boom and counterweight boom.

[0035] After applying the corresponding software method, the implementation process of this application embodiment is as follows:

[0036] The wind speed calibration module 100 determines the calibration wind speed under the current environment and inputs it to the comparison module 500. The direction calibration module 200 determines the calibration direction corresponding to the tower crane's rotation azimuth angle and inputs it to the control module 600. The wind speed detection module 300 detects the current wind speed and inputs it to the comparison module 500. The wind direction detection module 400 detects the current wind direction and inputs it to the control module 600. The comparison module 500 compares the current wind speed with the calibration wind speed. When the current wind speed is greater than the calibration wind speed, it outputs a high-level signal. When the wind speed is less than or equal to the rated wind speed, a low-level signal is output and the corresponding level signal is input to the control module 600. When the comparison module 500 outputs a high-level signal, i.e., when the current wind speed is greater than the rated wind speed, the control module 600 generates a tower crane control signal based on the current wind direction and the rated direction, and inputs it to the tower crane slewing control mechanism 700. The tower crane slewing control mechanism 700 controls the tower crane to rotate according to the tower crane control signal, so that the rated direction corresponding to the minimum windward side of the tower crane is kept parallel to the current wind direction, thereby minimizing the impact of wind resistance on the tower crane and effectively preventing the tower crane from tipping over.

[0037] It should be noted that the control module 600 generates tower crane control signals based on the current wind direction and the calibrated direction. In essence, it calculates the direction difference through the controller and generates motor control signals based on the calculation results. The computer software program involved in this function is a technology known to those skilled in the art and is not an improvement of this device, so it will not be described in detail here.

[0038] Based on the above technical solutions, this application also proposes a tower crane, which includes a device for preventing tower crane tipping as described in the embodiments of this application.

[0039] It is understood that since the tower crane described in the embodiments of this application includes the anti-tower crane overturning device described in the embodiments, the description of the tower crane disclosed in the embodiments is relatively simple because it corresponds to the device disclosed in the embodiments. For relevant parts, please refer to the device description and it will not be repeated here.

[0040] It should be noted that this application only provides a device for preventing tower crane tipping and the specific structure of the tower crane. The relevant modules involved are all hardware system modules or functional modules that combine computer software programs or protocols with hardware in the prior art. The computer software programs or protocols involved in these functional modules are technologies known to those skilled in the art and are not improvements to this device, so they will not be described in detail here. The improvement of this device lies in the interaction or connection relationship between the modules, that is, the improvement of the overall structure of the device, in order to solve the corresponding technical problems that this device is intended to solve.

Claims

1. A device for preventing tower cranes from tipping over, characterized in that, The device includes a wind speed calibration module, a direction calibration module, a wind speed detection module, a wind direction detection module, a comparison module, a control module, and a tower crane slewing control mechanism. The wind speed calibration module and the wind speed detection module are electrically connected to the comparison module, the direction calibration module, the wind direction detection module, and the comparison module are electrically connected to the control module, and the control module is electrically connected to the tower crane slewing control mechanism. The wind speed calibration module is used to determine the calibration wind speed in the current environment. The direction calibration module is used to determine the calibration direction corresponding to the tower crane's rotation azimuth angle. The wind speed detection module is used to detect the current wind speed. The wind direction detection module is used to detect the current wind direction. The comparison module is used to output a high-level signal when the current wind speed is greater than the calibration wind speed. The control module is configured to generate a tower crane control signal based on the current wind direction and the calibration direction when the comparison module outputs a high-level signal. The tower crane slewing control mechanism is used to control the tower crane's rotation based on the tower crane control signal.

2. The anti-tower crane overturning device according to claim 1, characterized in that, The wind speed calibration module includes an environmental detection unit and a first control unit, wherein the environmental detection unit is electrically connected to the first control unit; The environmental detection unit is used to detect environmental data, and the first control unit is configured to determine the calibration wind speed corresponding to the environmental data.

3. The anti-tower crane overturning device according to claim 1, characterized in that, The direction calibration module includes an azimuth angle detection unit and a second control unit, wherein the azimuth angle detection unit is electrically connected to the second control unit; The azimuth angle detection unit is used to detect the rotation azimuth angle of the tower crane, and the second control unit is configured to determine the calibration direction corresponding to the rotation azimuth angle of the tower crane.

4. The anti-tower crane overturning device according to claim 3, characterized in that, The rotation azimuth angle of the tower crane is the rotation azimuth angle of the tower crane's boom or counterweight boom.

5. The anti-tower crane overturning device according to claim 1, characterized in that, The tower crane slewing control mechanism includes a slewing motor and a slewing brake, which are electrically connected to the control module.

6. A tower crane, characterized in that, The tower crane includes the anti-tower crane overturning device as described in any one of claims 1 to 5.

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