Tower crane for building construction

Abstract

The invention discloses a tower crane for building construction, the tower crane comprises a hoisting truss, an airflow guide assembly and a ducted air group, the airflow guide assembly is fixedly mounted on the surface of the hoisting truss, the influence of lateral wind on the hoisting truss is reduced by controlling the airflow direction, and stable lifting force is provided to enhance the stability of the crane. The ducted wind group accelerates airflow through turbine vanes, further compensates wind power and optimizes the wind power regulation capability of the crane. And the tower crane is also provided with a wind speed sensor and a wind direction sensor, and is combined with an intelligent control system to automatically adjust airflow guidance and wind compensation according to real-time data, so that the working efficiency and the safety of the tower crane under complex weather conditions are improved. The airflow guiding effect is ensured to be always in the optimal state through an automatic adjusting mechanism, and the structural stability and the airflow control performance are ensured by adopting a light high-strength material. The stability and the operation precision of the tower crane in a strong wind environment are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cranes, in particular to a tower crane for construction. BACKGROUND

[0002] In existing construction, tower cranes are widely used for lifting and transporting heavy objects. As shown in the prior art, a tower crane is usually composed of a lifting truss, counterweights and suspension cables. The lifting truss is the main structure of the tower crane, and the counterweights are used to balance the center of gravity of the crane to ensure stability when lifting heavy objects. The suspension cables balance the bending stress on the lifting truss and are used to eliminate the bending effect of the heavy object on the lifting truss during lifting. Figure 1

[0003] The lifting truss is the main structure of the tower crane, and its structural design must be able to withstand various loads during operation of the crane. When the tower crane is in operation, especially in strong winds, lateral wind can generate a large lateral force on the lifting truss, resulting in the following adverse effects: Lateral deviation and tilting: Lateral wind can cause the lifting truss to tilt or deviate laterally, which can affect the normal operation of the tower crane. If the lateral wind force is too large, it can cause the lifting truss to lose stability, and even cause the crane to overturn.

[0004] Structural vibration: Strong lateral wind can generate periodic impact forces on the lifting truss, causing structural vibration. This vibration not only affects the precise control of the crane, causing instability during lifting, but also can accelerate the fatigue of the structural components, shortening the service life of the crane.

[0005] In addition, existing tower cranes usually lack effective airflow guiding and wind force adjusting systems, and in strong winds or adverse weather conditions, the wind force has a greater impact on the lifting truss, which can cause the structure to tilt or lose stability, affecting construction progress and safety. Strong lateral wind has a large lateral pressure on the boom, which can cause the boom to bend or deform, especially under the continuous action of wind force, the lateral pressure on the boom can exceed its design strength, causing structural damage or failure.

[0006] Therefore, although the counterweights and suspension cables provided on the surface of the lifting truss in the prior art can to some extent reduce the impact of heavy objects on the tower crane, they still cannot effectively cope with strong winds or airflow disturbances, and do not provide sufficient lateral wind control, resulting in difficulty in ensuring the stability and operation efficiency of the crane under complex weather conditions. SUMMARY

[0007] ​The present application aims to solve one of the technical problems existing in the prior art or related art, in particular, the stability of the tower crane is insufficient, the wind resistance is too large, and the operation efficiency is low when the tower crane is disturbed by external factors such as lateral wind. The existing tower crane often lacks effective wind regulation and compensation mechanism, which leads to unstable work in strong wind environment, increases the construction risk, and reduces the operation precision and efficiency.

[0008] To this end, the technical solution adopted by the present application is as follows: a tower crane for building construction, comprising: The crane truss is used as the main structure of the tower crane, which is used to support other equipment and carry out load operation; The airflow guide assembly is fixedly installed on the surface of the crane truss, which adjusts the airflow direction to reduce the influence of lateral wind on the crane truss and improve the stability of the tower crane; The fixed seat is installed on the surface of the crane truss and serves as the connecting part of the airflow guide assembly and the crane truss; The cross pipe seat is installed on the fixed seat and adjusts the direction of the airflow by cooperating with the transmission shaft to provide stable lift; The transmission shaft is connected with the second drive motor and is used to drive the cross pipe seat to rotate and adjust the direction of the airflow; The air guide cover is fixedly installed on the surface of the fixed seat and is in sliding contact with the outer periphery of the cross pipe seat to ensure the accuracy of airflow guidance; The ducted fan group provides lift by airflow guidance and wind compensation to enhance the stability of the tower crane; The duct cylinder has a built-in turbine rotor blade for accelerating airflow and providing the required lift; The turbine rotor blade and the duct cylinder work together to generate airflow by rotation, reduce wind resistance and improve the stability of the crane truss; The control system is used to monitor wind speed and direction data in real time and automatically adjust the working state of the airflow guide assembly and the ducted fan group according to the monitoring results to optimize the wind regulation and compensation function of the tower crane.

[0009] The present application further improves the performance of the tower crane through the following technical features: The sensor group includes multiple wind speed sensors and wind direction sensors, which monitor the wind speed and direction around the tower crane in real time and transmit the data to the control system; The intelligent control system automatically adjusts the working state of the airflow guide assembly and the ducted fan group according to the sensor data to optimize airflow guidance, reduce wind resistance, improve lift and enhance the stability of the tower crane in lateral wind; The automatic adjustment mechanism is arranged between the cross pipe seat and the air guide cover and can automatically adjust the sealing state according to the change of airflow to ensure that the airflow guidance effect is optimal; Lightweight high-strength materials are used for the manufacture of cross pipe seats and lifting trusses to ensure sufficient wind flow control and guiding performance without increasing the load; The synchronous driving system realizes wind compensation and airflow optimization through the cooperation of the first driving motor and the second driving motor in driving the transmission shaft and other components.

[0010] The technical solution of the present application can effectively solve the problems of poor stability and excessive wind resistance of the existing tower crane when subjected to lateral wind interference. Through the cooperative action of the airflow guiding assembly and the duct wind group, the working efficiency and safety of the tower crane under various wind speed and wind direction conditions are improved, and the operating state can be automatically adjusted according to real-time weather conditions to ensure accurate operation and work efficiency of the crane.

[0011] The beneficial effects of the present application are: 1. Through the cooperative action of the airflow guiding assembly and the duct wind group, the influence of lateral wind on the tower crane is effectively reduced, and the stability of the crane is enhanced; 2. Through the intelligent control system and real-time monitoring mechanism, the present application can respond to airflow changes in real time and automatically adjust the operating state of the tower crane to optimize wind compensation; 3. The design of the automatic adjustment mechanism can ensure that the sealing state between the airflow guiding assembly and the lifting truss is always in the best state, further improving the working effect of the duct wind group; The tower crane described in the present application significantly improves the working efficiency, safety and stability of the tower crane through the above technical solutions, especially in environments with high wind speed or unstable wind direction, ensuring the smooth progress of the construction process. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic diagram of the structure of A of an embodiment of the present application; Figure 1 Figure 3 is a schematic diagram of the structure of the airflow guiding assembly of an embodiment of the present application; Figure 4 is a schematic diagram of the exploded structure of the fixed seat and the cross pipe seat of an embodiment of the present application; Figure 5 is a schematic diagram of the cross pipe seat cross-sectional structure of an embodiment of the present application; Figure 6 is a schematic diagram of the internal structure of the cross pipe seat of an embodiment of the present application; Figure 7 is a schematic diagram of the exploded structure of the duct wind group of an embodiment of the present application.

[0013] Reference signs:​ 100, crane truss; 110, suspension cable; 120, counterweight; 200, airflow guide assembly; 210, fixed seat; 220, cross pipe seat; 230, transmission shaft; 240, air guide cover; 211, exhaust hole; 212, side plate frame; 213, first drive motor; 214, second drive motor; 221, transmission belt; 222, guide shaft; 223, driving wheel; 231, synchronous tooth; 300, ducted fan group; 310, duct; 320, turbine rotor; 311, prong tooth. DETAILED DESCRIPTION

[0014] To make the objectives, technical solutions, and advantages of the present application clearer, further detailed explanations will be given below with reference to the embodiments and the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0015] It is understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0016] The following will be described in conjunction with the accompanying drawings Figures 1-7 Some embodiments of the present application provide a tower crane for construction.

[0017] Embodiment 1: As Figure 1 shown, the present application relates to a tower crane for construction, mainly comprising a crane truss 100, an airflow guide assembly 200, and a ducted fan group 300. The airflow guide assembly 200 is fixedly installed on the surface of the crane truss 100, which can effectively guide the airflow, reduce wind resistance and provide lift by controlling the airflow direction, and optimize the operating performance of the crane.

[0018] The crane truss 100 is the main structure of the tower crane, which is used to support the entire crane equipment. The truss is made of high-strength material, which has strong carrying capacity and stability. A plurality of sensor groups are installed on the surface of the truss, mainly including wind speed sensors and wind direction sensors, which are used to monitor the wind speed and direction in the surrounding environment in real time.

[0019] The airflow guide assembly 200 is composed of a fixed seat 210, a cross pipe seat 220, a transmission shaft 230, and an air guide cover 240, and the fixed seat 210 is fixed on the surface of the crane truss 100. The fixed seat 210 is installed at both ends through the side plate frame 212, and the first drive motor 213 and the second drive motor 214 are respectively installed on the side plate frame 212, which are used to drive the subsequent components to rotate.

[0020] The horizontal pipe seat 220 and the transmission shaft 230 are rotatably installed inside the two side plate frames 212. The transmission shaft 230 is in driving connection with the second driving motor 214 through the synchronous gear 231, thereby driving the horizontal pipe seat 220 to deflect and control the direction of the air flow.

[0021] The air guide cover 240 is in sliding abutment with the outer periphery of the horizontal pipe seat 220 through the top end, thereby ensuring that the air flow is introduced and discharged through the exhaust hole 211.

[0022] The ducted fan group 300 is composed of a duct cylinder 310 and a turbine rotor 320, and a plurality of ducted fan groups 300 are uniformly arranged in a straight line direction inside the horizontal pipe seat 220. Each ducted fan group 300 is connected with the driving wheel 223 through the transmission belt 221, thereby ensuring synchronous rotation. The ducted fan group 300 is driven by the first driving motor 213, and is rotated through the transmission belt 221 and the driving wheel 223, so that the air flow enters through the horizontal pipe seat 220 and is discharged through the exhaust hole 211, thereby providing the required lifting force for the lifting truss 100.

[0023] Air flow regulation and feedback control: According to the real-time monitored wind speed and wind direction, the sensor group transmits data to the control system, and the control system automatically adjusts the working state of the horizontal pipe seat 220 and the ducted fan group 300, so as to realize accurate air flow guiding and wind force compensation. Specifically, the control system controls the angle of the air flow guiding assembly 200 according to the wind direction feedback mechanism, optimizes the air flow guiding effect, reduces wind resistance, and improves the stability of the crane.

[0024] Automatic adjustment mechanism: In order to further improve the air flow guiding effect, an automatic adjustment mechanism is arranged between the horizontal pipe seat 220 and the air guide cover 240. The mechanism can automatically adjust the sealing state between the air guide cover 240 and the horizontal pipe seat 220 according to the real-time air flow intensity, so as to ensure that the air flow can be effectively guided under different weather conditions and the air leakage phenomenon is reduced.

[0025] Embodiment 2: In another embodiment, the tower crane structure of the present application is similar to that of embodiment 1, but has some improvements. In order to improve the strength and durability of the lifting truss 100 and the air flow guiding assembly 200, the horizontal pipe seat 220 and the lifting truss 100 are made of lightweight high-strength materials. These materials provide sufficient air flow control and guiding performance without increasing the load.

[0026] In addition, in this embodiment, advanced automatic control technology is further adopted, and the intelligent control system can accurately adjust the working state of the air flow guiding assembly 200 and the ducted fan group 300 according to the real-time data of the wind speed sensor and the wind direction sensor, thereby optimizing the air flow guiding effect and enhancing the stability of the crane.

[0027] Working principle and use process of the present application: The tower crane of the present application effectively utilizes the principle of wind flow mechanics by setting the airflow guiding assembly 200 and the ducted fan group 300, realizes the lift enhancement of the crane truss 100, reduces the lifting moment at the end of the crane truss 100 and wind resistance, and optimizes the working performance of the crane. The specific working principle is as follows: Airflow guiding and wind direction adjusting: The crane truss 100 is provided with a wind speed sensor and a wind direction sensor, i.e. a sensor group, which monitors the wind speed and direction of the windward surface of the crane truss 100 in real time. The sensor group transmits the monitoring data to the control system, which adjusts the working state of the airflow guiding assembly 200 and the ducted fan group 300 in real time according to the wind speed and direction information.

[0028] Airflow guiding: According to the instructions of the control system, the first drive motor 213 and the second drive motor 214 drive the transmission shaft 230 and the cross pipe seat 220 on the side plate frame 212, realize the dynamic adjustment of the angle of the cross pipe seat 220, and change the airflow guiding direction. The airflow enters from the cross pipe seat 220 and is guided by the ducted fan group 300 to enhance the lift.

[0029] Wind force compensation and lift provision: The ducted fan group 300 rotates through the turbine rotating blade 320 to provide airflow flow and is discharged through the exhaust hole 211. When the airflow passes through the airflow guiding assembly 200, it is effectively guided to reduce the wind resistance generated by the windward surface of the crane truss 100. Through the lift provided by the ducted fan group 300, the crane truss 100 can remain stable and reduce the interference of wind on its operation.

[0030] Automatic adjusting mechanism: The automatic adjusting mechanism is provided between the cross pipe seat 220 and the air guide cover 240. When the airflow changes, the automatic adjusting mechanism adjusts the sealing state between the air guide cover 240 and the cross pipe seat 220 according to the airflow intensity, to ensure that the airflow guiding effect is always in the best state.

[0031] Intelligent feedback control: The intelligent control system adjusts the working state of the airflow guiding assembly 200 and the ducted fan group 300 according to the sensor data and real-time weather information, to ensure that the airflow guiding and wind force compensation achieve the best effect under different wind speed and direction conditions.

[0032] Use process: Initialization and preparation: After the installation of the tower crane is completed, first, the inspection and debugging of the crane truss 100 and the airflow guiding assembly 200 and other components are carried out to ensure that the sensor group works normally. The counterweight 120 and the suspension cable 110 and other components are arranged to work together, the control system is started, the sensor is calibrated, and it is ensured that the wind speed sensor and the wind direction sensor of the sensor group can accurately monitor the wind speed and direction of the surrounding environment.

[0033] Start-up operation: Start up the crane truss 100 and other mechanical equipment, enter the construction state. The windward surface sensor of the crane truss 100 monitors the real-time wind speed and direction and feeds back the data to the control system.

[0034] Data acquisition and wind direction adjustment: The control system calculates the optimal airflow guiding scheme based on the real-time data provided by the sensor. The system drives the transmission shaft 230 and the cross pipe seat 220 through the first drive motor 213 and the second drive motor 214 to adjust the position or angle of the cross pipe seat 220 and the ducted fan group 300, ensuring that the airflow guiding direction adapts to the current wind direction, providing lift and reducing wind resistance.

[0035] Real-time monitoring and airflow guiding adjustment: During the operation of the tower crane, the system monitors the changes in wind speed and direction in real time and automatically adjusts the working state of the airflow guiding assembly 200 and the ducted fan group 300 according to the changes. The sensor group continues to monitor the changes in the surrounding environment to ensure that the airflow guiding system dynamically adjusts according to environmental conditions.

[0036] Airflow compensation and operation optimization: The control system maximizes the reduction of wind resistance and provides stable lift through the ducted fan group 300 in cooperation with the airflow guiding assembly 200 and the ducted fan group 300, ensuring the stability of the crane truss 100. The automatic adjustment mechanism adjusts the sealing state between the airflow cover 240 and the cross pipe seat 220 according to the changes in airflow to ensure that the airflow is not hindered.

[0037] End of work: After completing the task, the control system automatically closes the adjustment function of the airflow guiding assembly 200 and the ducted fan group 300, and performs shutdown operation on each system. Start up other functional equipment of the crane truss 100 and end the construction work.

[0038] Summary: The tower crane of the present application effectively reduces wind resistance and increases lift through the intelligent control system, airflow guiding assembly 200 and ducted fan group 300, enabling the tower crane to operate stably in different wind speed and direction environments. The system can monitor environmental changes in real time and automatically adjust airflow guiding according to demand, improving construction efficiency and safety.

[0039] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and application of the present application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A tower crane for building construction, characterized in that, include: The system comprises a lifting truss (100), an airflow guiding assembly (200), and a ducted air assembly (300), as well as a control system for controlling the working state of the airflow guiding assembly (200) and the ducted air assembly (300). The airflow guiding assembly (200) is fixedly installed on the surface of the lifting truss (100). The airflow guiding assembly (200) includes a fixed base (210), a horizontal tube base (220), a drive shaft (230), and an air guide hood (240). Side plate frames (212) are fixedly installed at both ends of the fixed base (210), and a first drive motor (213) and a second drive motor (214) are fixedly installed on the surfaces of the two side plate frames (212), respectively. The horizontal tube base (220) and the drive shaft (230) are rotatably installed on the inner sides of the two side plate frames (212). One end of the drive shaft (230) is provided with a synchronous drive that drives the output end of the second drive motor (214). The air guide hood (240) is fixedly installed on the surface of the fixed base (210), and the top of the air guide hood (240) slides against the outer periphery of the horizontal tube base (220). The number of duct air groups (300) is several and they are evenly arranged in a straight line on the inner side of the horizontal tube base (220). The inner side of the horizontal tube base (220) is rotatably installed with a transmission belt (221) and a drive wheel (223). The output end of the first drive motor (213) is driven to mesh with the surface of the drive wheel (223). The transmission belt (222), the drive wheel (223) and the outer periphery of the duct air group (300) are sleeved with a guide shaft (221). The first drive motor (213) drives several duct air groups (300) to rotate synchronously through the drive wheel (223) and the guide shaft (221). The bottom surface of the fixed base (210) is provided with an exhaust hole (211) for airflow out.

2. A tower crane for construction according to claim 1, characterized in that, The ducted air assembly (300) includes a duct (310) and a turbine blade (320) fixed inside the duct (310). The surface of the duct (310) is provided with teeth (311), and the outer periphery of the duct (310) is engaged with the inner side of the guide shaft (221) through the teeth (311).

3. A tower crane for building construction according to claim 1, characterized in that, The two ends of the drive shaft (230) are provided with synchronous belts that drive the horizontal tube seat (220) at both ends, which are used for the deflection transmission of the horizontal tube seat (220). Under the drive of the second drive motor (214), the drive shaft (230) is rotated to realize the rotation control of the horizontal tube seat (220).

4. A tower crane for building construction according to claim 1, characterized in that, The air guide cover (240) is a flexible rubber component, and the air guide cover (240) is in the shape of a stacked cylinder. The top of the air guide cover (240) is sealed and abutted against the surface of the horizontal tube seat (220).

5. A tower crane for building construction according to claim 1, characterized in that, The surface of the lifting truss (100) is equipped with a sensor group, which includes multiple wind speed sensors and wind direction sensors. The sensor group is used to monitor the wind speed and wind direction on the windward side of the lifting truss (100) in real time and transmit the data to the control system to adjust the position of the horizontal tube seat (220) and the duct wind group (300) to achieve precise airflow guidance and wind force compensation.

6. A tower crane for building construction according to claim 1, characterized in that, An automatic adjustment mechanism is provided between the horizontal tube seat (220) and the air guide hood (240). This adjustment mechanism can automatically adjust the sealing state of the air guide hood (240) and the horizontal tube seat (220) according to the changes in airflow, thereby optimizing the airflow guiding effect.

7. A tower crane for building construction according to claim 1, characterized in that, The surface of the lifting truss (100) is connected to each component in the airflow guiding component (200) and the duct wind group (300) through an intelligent control system, forming a wind direction feedback mechanism that can adjust the working status of the horizontal pipe seat (220) and the duct wind group (300) in real time according to meteorological changes.

8. A tower crane for construction according to claim 1, characterized in that, The horizontal tube seat (220) and the lifting truss (100) are made of lightweight, high-strength materials, which can provide sufficient airflow control and guidance performance without increasing the load.

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