Safe windproof alarm system for gantry crane of crane

Abstract

The invention belongs to the field of wind prevention of gantry cranes, and particularly discloses a crane gantry crane safety windproof alarm system which comprises a plurality of iron shoe bodies movably connected to a crane gantry crane body and further comprises a state detection mechanism used for detecting the placement state of the iron shoe bodies. The state detection mechanism comprises a first induction part arranged on the iron shoe body and a second induction part which is arranged on the gantry crane body of the crane and is in mutual induction fit with the first induction part; and the monitoring control system is electrically connected with the first induction part and the second induction part and is used for judging whether the iron shoe body is located at the storage position or the working position or not according to the relative state of the first induction part and the second induction part and outputting a signal to control the running state of the gantry crane body of the crane. By means of the structural design, the situation that the iron shoe body is not placed or taken due to human negligence is effectively avoided, the accidents of sliding down and tipping over are prevented, and the safety level of equipment operation is remarkably improved.

Description

Technical Field

[0001] This application belongs to the field of wind protection for gantry cranes, and more specifically, relates to a safety wind protection alarm system for crane gantry cranes. Background Technology

[0002] A gantry crane is a type of bridge crane whose main beam is supported on ground rails by outriggers on both sides, forming a "gate"-shaped frame. Gantry cranes play a vital role in modern industry, logistics, and major infrastructure construction. They are widely used in ports, shipbuilding, water conservancy and hydropower, bridge construction, industrial production, and logistics warehousing, undertaking the lifting and transfer of heavy components. They free manpower from high-risk and heavy manual labor, greatly improving operational safety and efficiency. Therefore, their safe and stable operation is of paramount importance.

[0003] In existing safety measures for gantry cranes, "rail shoes" (i.e., rail stoppers or anti-slip devices) are commonly used to prevent accidental slippage or rollover due to wind or slope when the equipment is not in operation. These are typically wedge-shaped blocks made of high-strength steel plates. When in use, they are wedged between the crane wheels and the rails. Their unique shape and immense friction prevent the wheels from rolling, using friction to resist wind or slope forces. Furthermore, because the rail shoes are in close contact with the wheels and rails, they form an additional mechanical support point, effectively enhancing the overall stability of the gantry crane when not in operation. Rail shoes are passive safety devices and serve as the last line of defense after the crane has stopped operating. When in use, rail shoes must typically be placed under at least two (or more) wheels simultaneously, positioned against the wind direction, and all rail shoes must be removed before the crane needs to be restarted.

[0004] Traditional steel shoes rely on manual operation in actual use. However, operators may neglect to place the steel shoes or fail to remove them in time before work, resulting in insufficient wind protection or the crane running over the steel shoes when starting, causing the gantry crane to run away or overturn, which poses a significant safety hazard. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides a safety windproof alarm system for crane gantry cranes, aiming to solve the problem that traditional iron shoes are prone to being left out or misplaced during use, which can lead to gantry crane runaway or overturning accidents and pose significant safety hazards.

[0006] This application provides a safety windproof alarm system for a crane gantry crane, installed on the crane gantry crane body, specifically including several iron shoe bodies movably connected to the crane gantry crane body, and further including: A status detection mechanism is used to detect the placement status of the iron shoe body; the status detection mechanism includes a first sensing component disposed on the iron shoe body, and a second sensing component disposed on the crane gantry crane body and interacting with the first sensing component. The monitoring and control system is electrically connected to the first sensing component and the second sensing component. It is used to determine whether the iron shoe body is in the storage position or the working position according to the relative state of the first sensing component and the second sensing component, and output a signal to control the operating state of the crane gantry crane body.

[0007] Compared with the prior art, the technical solution conceived in this application, by setting a first sensing component on the iron shoe body and a second sensing component on the crane gantry crane body, enables the monitoring and control system to determine whether the iron shoe body is in the storage or working position based on the relative state of the first and second sensing components, and thereby control the operation of the crane gantry crane in a coordinated manner. This effectively avoids the iron shoe body being left out or not being taken out due to human negligence, fundamentally preventing crane gantry crane runaway and overturning accidents, and significantly improving the safety level of equipment operation. The system also realizes the automated monitoring and management of windproof measures, reducing the reliance on and uncertainty of manual inspection.

[0008] As a further preferred embodiment, the crane gantry crane body is provided with a plurality of placement racks for accommodating the iron shoe body. The number of placement racks is the same as that of the second sensing component and their positions correspond. The placement racks are provided with placement slots as storage locations.

[0009] As a further preferred embodiment, the first sensing component and the second sensing component are non-contact sensors or contact sensors that cooperate with each other.

[0010] As a further preferred embodiment, the crane gantry crane body includes a crossbeam and several support frames disposed at both ends of the crossbeam. Each support frame is provided with several wheels, and each of the left and right ends of the support frame is connected to a shoe body, a placement frame, and a second sensing component.

[0011] As a further preferred embodiment, one side of the iron shoe body has an arc-shaped surface that fits into the wheel.

[0012] As a further preferred embodiment, the bottom end of the iron shoe body is fixedly connected to a limiting component, and the bottom of the limiting component is provided with a slot, which is embedded and adapted to the working rail of the crane gantry crane.

[0013] As a further preferred embodiment, the iron shoe body is connected to the crane gantry crane body via a flexible connecting chain.

[0014] As a further preferred embodiment, pressure sensors are fixedly installed on the upper part of the arc-shaped surface and the inner wall of the slot. The pressure sensors are electrically connected to the monitoring and control system through a flexible connecting chain and are used to determine whether the iron shoe body is wedged tightly in the working position.

[0015] As a further preferred embodiment, the monitoring and control system includes: The PLC controller has its signal input terminals electrically connected to the first sensing component and the second sensing component, respectively, for receiving signals from the first sensing component and the second sensing component, and determining whether the iron shoe body is in the storage position or the working position based on the relative state of the signals; the first sensing component and the second sensing component are configured to output a signal that the iron shoe body is in the storage position when mutual sensing occurs, and output a signal that the iron shoe body is in the working position when no mutual sensing occurs. The human-machine interaction module is connected to the signal output terminal of the PLC controller and is used to provide feedback on the position status of the iron shoe body; A relay is connected to the control output terminal of the PLC controller and the travel control circuit of the crane gantry crane body, and is used to output control signals to the crane gantry crane body according to the detection results of the PLC controller.

[0016] As a further preferred embodiment, when the PLC controller detects that at least one of the iron shoe bodies is not in the storage position, the relay outputs a locking signal to prohibit or interrupt the operation and movement of the crane gantry crane body.

[0017] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages: 1. This application achieves automatic monitoring of the usage status of the iron shoe body through the collaborative work of the status detection mechanism and the monitoring and control system. When the system detects that any iron shoe body has not been correctly returned to the designated storage location, it will automatically lock the traveling function of the crane gantry crane, avoiding operational errors such as "forgetting to take the iron shoe" or "forgetting to put the iron shoe out of the windproof" caused by human negligence, and preventing serious accidents such as gantry crane runaway or overturning caused by these errors. It transforms reliance on personnel management into proactive safety protection guaranteed by technical means, and significantly improves the safety level of the equipment.

[0018] 2. This application integrates multiple functions such as sensor detection, logical judgment, and status indication. Through the precise perception of non-contact or contact sensors, the system can accurately determine whether each iron shoe body is in the working position or the storage position. The system's overall status is displayed in real time and intuitively through the human-machine interaction module. This not only realizes the automated monitoring of windproof measures and reduces the workload and uncertainty of manual inspection, but also makes the management and use of iron shoe bodies more standardized, accurate, and reliable, greatly improving the efficiency of safety management.

[0019] 3. The arc-shaped surface of the iron shoe body and the setting of the limiting part slot in this application ensure that the iron shoe body is effectively wedged with the wheel and the working track. The setting of the pressure sensor further ensures the effectiveness of the working state of the iron shoe body, thereby effectively improving the use effect of the iron shoe body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the crane gantry crane body provided in the embodiments of this application; Figure 2 This is a schematic diagram of the working position of the iron shoe body provided in the embodiment of this application; Figure 3 This is a front view structural diagram of the iron shoe body provided in the embodiment of this application; Figure 4 This is a side view structural diagram of the iron shoe body provided in the embodiment of this application; Figure 5 This is a schematic diagram showing the storage position of the iron shoe body provided in the embodiment of this application.

[0021] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Crane / gantry crane body; 11. Crossbeam; 12. Support frame; 13. Wheel; 2. Iron shoe body; 21. Arc-shaped surface; 22. Limiting component; 221. Slot; 3. Status detection mechanism; 31. First sensing component; 32. Second sensing component; 4. Monitoring and control system; 5. Placement rack; 51. Placement slot; 6. Flexible connecting chain. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] Reference Figure 1 and Figure 2 This application discloses a safety windproof alarm system for a crane gantry crane, which is installed as a whole on the crane gantry crane body 1. The system mainly includes three parts: a slipper device, a condition detection mechanism 3, and a monitoring and control system 4.

[0024] Reference Figure 2Specifically, the device uses a slipper mechanism to ensure the safety of the equipment when it is stopped and prevent accidental slippage. This mechanism includes several slipper bodies 2, which are directly wedged into the front or under the wheels 13 of the crane gantry crane, using mechanical interference to prevent the wheels from rolling. The slipper bodies 2 are made of high-strength steel plates, possessing high compressive strength, rigidity, and wear resistance, capable of withstanding the enormous pressure and impact of the wheels 13 within the crane gantry crane body 1. For easy manual installation and removal, a handle is fixedly connected to the tail end of the slipper body 2, allowing operators to easily and accurately place and remove it, improving operational convenience and safety. The slipper bodies 2 are movably connected to the crane gantry crane body 1 via a flexible connecting chain 6 to prevent loss or careless placement. The slipper bodies 2 are also electrically connected to the monitoring and control system 4 via the flexible connecting chain 6. The flexible connecting chain 6 integrates power lines, signal lines, and control lines. The power lines provide power to the sensors and indicator lights inside the slipper bodies 2, the signal lines collect sensor signals, and the control lines receive commands. The flexible connecting chain 6 has a protective sleeve to ensure the durability and reliability of the wiring.

[0025] Reference Figure 3 and Figure 4 To improve the fixing effect of the shoe body 2 on the crane gantry crane wheel 13, the side of the shoe body 2 facing the wheel 13 has an arc-shaped surface 21 that matches the curvature of the wheel rim of the crane gantry crane wheel 13. When the shoe body 2 is placed in the working position, the arc-shaped surface 21 can fit tightly against the wheel 13, increasing the contact area and improving friction. In addition, a high-strength limiting member 22 is fixedly connected to the bottom end of the shoe body 2. The bottom of the limiting member 22 has a slot 221, the shape of which is adapted to the cross-section of the crane gantry crane's working track. When the shoe body 2 is placed in place, the slot 221 can accurately engage above the track, effectively preventing the shoe body 2 from shifting or falling off when subjected to lateral force, thereby ensuring the reliability of the shoe body 2's wedging.

[0026] In addition, to further confirm whether the shoe body 2 is effectively wedged in the working position, pressure sensors are fixedly installed on the arc surface 21 of the shoe body 2 and on the inner wall of the slot 221 of the limiting member 22. The pressure sensors are connected to the PLC controller in the monitoring and control system 4 through the flexible connecting chain 6. When the shoe weds the wheel 13 and the track, the pressure sensor will detect the pressure signal. The PLC controller can determine whether the shoe body 2 is in an effective working state based on this. At the same time, the indicator light on the shoe body 2 can display green or red depending on whether it is placed stably.

[0027] More specifically, the state detection mechanism 3 is used to automatically detect the placement state of the shoe body 2, i.e., whether it is in the storage position or the working position. The state detection mechanism 3 includes a first sensing component 31 and a second sensing component 32, which are non-contact or contact sensors that sense each other. The first sensing component 31 is fixedly installed inside each shoe body 2. In this embodiment, the first sensing component 31 is an eddy current proximity sensor, which is a passive sensor. Its core is an LC oscillation circuit, which oscillates at a specific frequency under normal conditions. When the object approaches the second sensing component, eddy currents are generated inside, causing the oscillation frequency to change or stop, thereby triggering a switch signal. The second sensing component 32 is fixedly installed on the crane gantry crane body 1. When the shoe body 2 is placed in a specific storage position, the second sensing component 32 senses and cooperates with the first sensing component 31. In this embodiment, the second sensing component 32 is a detection switch.

[0028] Reference Figure 5 When the shoe body 2 is retrieved and correctly placed in the storage position of the placement rack 5, the distance between the first sensing component 31 (proximity sensor) inside the shoe body 2 and the second sensing component 32 (detection switch) on the placement rack 5 enters the effective sensing range. At this time, the second sensing component 32 generates and immediately sends a "stored" signal to the monitoring and control system 4. When the shoe body 2 is removed from the placement rack 5 and is ready or has been placed on the working track in the working position, the distance between the first sensing component 31 and the second sensing component 32 exceeds the effective sensing range. At this time, the second sensing component 32 generates a "not stored" or "removed" signal and sends it to the monitoring and control system 4.

[0029] Reference Figure 1 On the crane gantry crane body 1, there are several placement racks 5 for accommodating the iron shoe body 2. Each iron shoe body 2 is provided with a placement rack 5. The number of placement racks 5 is the same as that of the second sensing component 32 and their positions correspond. Placement slots 51 are provided on the placement racks 5 to serve as storage positions for the iron shoe body 2.

[0030] In this embodiment, the crane gantry crane body 1 includes a crossbeam 11 and several support frames 12 disposed at both ends of the crossbeam 11. Several wheels 13 are disposed on each support frame 12. In this embodiment, two wheels 13 are installed on each support frame 12. A shoe body 2, a placement frame 5 and a second sensing component 32 are connected to both the left and right ends of the support frame 12. When the shoe body 2 is installed, it is located on the side opposite to the left and right ends of the wheels 13 to stabilize and fix the position of the wheels 13.

[0031] The monitoring and control system 4 is responsible for processing status signals and executing control logic. It is electrically connected to the status detection mechanism 3. Based on the relative states of the first sensing component 31 and the second sensing component 32, it determines whether the iron shoe body 2 is in a storage or working position and outputs signals to control the operating state of the crane gantry crane body 1. Specifically, it outputs a locking signal to prohibit or interrupt the movement of the crane gantry crane body 1, or outputs an unlocking signal to allow its movement, thus realizing intelligent interlocking and management of the crane gantry crane operation. The monitoring and control system 4 includes a PLC controller, relays, a switching power supply, and a human-machine interface module. The signal input terminals of the PLC controller are electrically connected to the first sensing component 31 and the second sensing component 32, respectively, continuously receiving signal inputs from the first sensing component 31 and the second sensing component 32, and determining whether the iron shoe body 2 is in a storage or working position based on the relative states of the signals. When mutual sensing occurs between the first sensing component 31 and the second sensing component 32 (distance enters the effective sensing range), it outputs a signal to the PLC controller that the iron shoe body 2 is in a storage position; when no mutual sensing occurs (distance exceeds the effective sensing range), it outputs a signal to the PLC controller that the iron shoe body 2 is in a storage position. The signal indicates that the shoe body 2 is in the working position; the human-machine interface module is connected to the signal output terminal of the PLC controller to provide feedback on the position status of the shoe body 2; the relay is connected to the control output terminal of the PLC controller and the travel control circuit of the crane gantry crane body 1 to output control signals to the crane gantry crane body 1 according to the detection results of the PLC controller, so as to control the operating status of the crane gantry crane body 1. Specifically, the relay acts as an electrical isolation and power amplification unit, using a small signal to control the on / off of high-voltage, high-current circuits in the main circuit or control circuit of the travel mechanism of the crane gantry crane body 1; the switching power supply provides a stable working power for the monitoring and control system 4.

[0032] The PLC controller is electrically connected to the first sensing component 31 (proximity sensor) and pressure sensor on all the iron shoe bodies 2 via the lines in the flexible connection chain 6. In addition, it is also electrically connected to the second sensing component 32 (detection switch) on the crane gantry crane body 1 via the lines to receive its status signal.

[0033] The relay is electrically connected to the travel control circuit of the crane gantry crane body 1. The PLC controller performs logical judgment on the input signals according to the preset program. When it detects that at least one iron shoe body 2 is not in the storage position (i.e., has been removed), the PLC controller outputs a locking signal to the travel control circuit of the crane gantry crane body 1 through the relay. The locking signal will prohibit or immediately interrupt the operation and movement of the crane gantry crane body 1, thereby preventing the equipment from being started without removing all iron shoe bodies 2, and avoiding equipment damage and accidents caused by "traveling with iron shoes".

[0034] The human-machine interface module includes status indicator lights (such as red and green dual-color lights) and an audible alarm. When all the iron shoe bodies 2 are correctly retrieved to their storage positions, the PLC controller controls the status indicator lights to display green, indicating that the crane gantry crane body 1 can move safely. When any iron shoe body 2 is not retrieved, the status indicator lights display red, and the audible alarm sounds with both sound and light, reminding the operator to check and retrieve the iron shoe.

[0035] The PLC controller uses a standard CPU module, and its input / output signal points must be no less than the sum of the numbers of all first sensing elements 31, second sensing elements 32, and pressure sensors. In this embodiment, if the number of wheels 13 (m) is 44, then the number of the shoe body 2, the first sensing element 31, and the second sensing element 32 is also 44. The number of input / output signals of the PLC controller is 90, and the number of I / O points of the PLC must have sufficient margin. Expansion modules can be added according to actual usage requirements. The switching power supply provides a stable 220VAC and 24VDC power supply to the system.

[0036] In actual working conditions, operators must make tiered decisions based on wind forecasts and on-site procedures: When the wind force is level 12 or below and there are no other windproof measures, all the wheel shoe bodies 2 must be placed in the working position (between the wheel 13 and the working rail), with the wheel shoe bodies 2 serving as the primary windproof anchoring device. When the wind force is level 12 or below but the crane gantry crane body 1 is equipped with rail clamps, at least half of the wheel shoe bodies 2 must be installed to provide protection together with the rail clamps, ensuring a safety margin. When the wind force is above level 12, the crane gantry crane body 1 is mainly secured by windproof cables and anchoring devices, with the wheel shoe bodies 2 serving as an auxiliary measure.

[0037] When placing the shoe body 2, the operator removes it from the storage rack 5 using the handle and places it on the working track, ensuring the wheel 13 is in contact with the curved surface 21. Simultaneously, the locking slot 221 of the limiting member 22 engages with the track. When the pressure sensor detects a stable pressure signal, it confirms that the shoe body 2 is wedged securely. At this point, the "not stored" signal of the shoe body 2 is detected by the PLC controller, and the system records that the shoe body 2 has entered a "standby" or "in use" state. If the PLC controller continuously detects that a shoe body 2 has not been retrieved, the relay output signal keeps the travel control circuit locked, preventing the crane gantry crane body 1 from moving.

[0038] When removing the shoe body 2, the operator retrieves all shoe bodies 2 from the work track and accurately places them back into their respective storage positions on the rack 5. The first sensing component 31 and the second sensing component 32 re-enter their effective sensing range, and the PLC controller receives a signal indicating that all shoe bodies 2 are "stored". The PLC controller's status indicator light turns green, and the lock on the travel control circuit is released, restoring the crane gantry crane body 1 to its moving ability. If any shoe body 2 is not returned, the status indicator light remains red and an alarm sounds, preventing the crane gantry crane body 1 from starting.

[0039] In this embodiment, by deeply integrating the steel shoe body 2, high-precision sensors, programmable logic controllers, and electromechanical interlocks, automated monitoring and mandatory safety management of the windproof measures for crane gantry cranes are achieved. It not only provides clear status indications to operators through audible and visual alarms, but also directly intervenes in the equipment power of the crane gantry crane through electromechanical interlocks, effectively preventing the problem of steel shoe being left out or retrieved due to human negligence. This significantly improves the operational safety of crane gantry cranes in open-air environments and fundamentally prevents major accidents such as runaway and overturning.

[0040] In this embodiment, after the crane gantry crane body 1 has stopped and stabilized, the iron shoe body 2 is installed sequentially from one end of the crane gantry crane body 1 to the other end, as follows: After the first iron shoe body 2 is installed, the monitoring and control system 4 checks whether the iron shoe body 2 is placed stably. If it is not placed stably, the monitoring and control system 4 controls the crane travel switch to be disconnected first, and activates the red indicator light and audible alarm. At this time, the indicator light on the iron shoe body 2 is green, reminding the operator to check the installation status of the iron shoe body 2 and make adjustments until the indicator light on the iron shoe body 2 turns red, indicating that the iron shoe body 2 is installed successfully. Then, the monitoring and control system 4 controls the crane power to be cut off. If the iron shoe body 2 is placed stably, the monitoring and control system 4 controls the crane power to be cut off, and the indicator light on the iron shoe body 2 turns red.

[0041] After the second iron shoe body 2 is installed, the monitoring and control system 4 detects whether the iron shoe body 2 is placed stably. If it is not placed stably, the monitoring and control system 4 activates the red indicator light and sounds an alarm. At this time, the indicator light on the iron shoe body 2 is green, reminding the operator to check the installation status of the iron shoe body 2 and make adjustments until the indicator light on the iron shoe body 2 turns red, indicating that the iron shoe body 2 is installed successfully. If the iron shoe body 2 is placed stably, the indicator light on the iron shoe body 2 will show red.

[0042] Install the third to the (N-1)th iron shoe bodies 2 using the same installation method as the second iron shoe body 2. After the Nth iron shoe body 2 is installed, the monitoring and control system 4 checks whether the iron shoe body 2 is stably placed. If it is not stably placed, the monitoring and control system 4 activates a red indicator light and an audible alarm. At this time, the indicator light on the iron shoe body 2 is green, reminding the operator to check the installation status of the iron shoe body 2 and adjust it until the indicator light on the iron shoe body 2 turns red, indicating that the iron shoe body 2 is installed successfully. Then, the monitoring and control system 4 activates the green indicator light and deactivates the audible alarm. If the iron shoe body 2 is stably placed, the indicator light on the iron shoe body 2 will be red. At this time, the monitoring and control system 4 activates the green indicator light and deactivates the audible alarm. When the operator checks that all the indicator lights on the iron shoe body 2 are red, it indicates that all the iron shoe bodies 2 are installed successfully. At this time, the crane gantry crane body 1 stops.

[0043] In this embodiment, before the crane gantry crane body 1 needs to be started, the iron shoe body 2 is removed sequentially from one end of the crane gantry crane body 1 to the other end, as follows: After the first iron shoe body 2 is retrieved, the monitoring and control system 4 checks whether the iron shoe body 2 has been returned to its storage position. If it has not been returned, the monitoring and control system 4 activates a red indicator light and an audible alarm. At this time, the indicator light on the iron shoe body 2 is red, reminding the operator to check and return the iron shoe body 2 until the indicator light on the iron shoe body 2 turns green. At this time, the crane power supply remains disconnected. If the iron shoe body 2 has not been returned to its storage position, the indicator light on the iron shoe body 2 will show green.

[0044] After the second iron shoe body 2 is retrieved, the monitoring and control system 4 checks whether the iron shoe body 2 has been returned to its storage position. If it has not been returned, the monitoring and control system 4 activates the red indicator light and sounds an alarm. At this time, the indicator light on the iron shoe body 2 is red, reminding the operator to check and return the iron shoe body 2 until the indicator light on the iron shoe body 2 turns green. At this time, the crane power supply remains disconnected. If the iron shoe body 2 has not been returned to its storage position, the indicator light on the iron shoe body 2 will show green.

[0045] The retrieval process for the second shoe body 2 is repeated for the third to the (N-1)th shoe bodies 2. After the Nth shoe body 2 is retrieved, the monitoring and control system 4 checks whether it has been returned to its storage location. If not, the system activates a red indicator light and sounds an alarm. The indicator light on the shoe body 2 will be red, prompting the operator to check and return it. This continues until the indicator light turns green. At this point, the monitoring and control system 4 activates the green indicator light and deactivates the alarm, while simultaneously powering on the crane. If the shoe body 2 has been returned to its storage location, the indicator light will be green. The monitoring and control system 4 will then activate the green indicator light and deactivate the alarm, while simultaneously powering on the crane. Once all indicator lights on the shoe bodies 2 are green, it indicates that all shoe bodies 2 have been retrieved and placed in their storage locations. At this point, the crane gantry crane body 1 can be started and operated.

[0046] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0047] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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, they should not be construed as limitations on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A safety windproof alarm system for a crane gantry crane, installed on the crane gantry crane body (1), characterized in that, Including several iron shoe bodies (2) that are movably connected to the crane gantry crane body (1), and also including: The status detection mechanism (3) is used to detect the placement status of the iron shoe body (2); the status detection mechanism (3) includes a first sensing component (31) disposed on the iron shoe body (2) and a second sensing component (32) disposed on the crane gantry crane body (1) and interacting with the first sensing component (31). The monitoring and control system (4) is electrically connected to the first sensing component (31) and the second sensing component (32) to determine whether the iron shoe body (2) is in the storage position or working position according to the relative state of the first sensing component (31) and the second sensing component (32), and outputs a signal to control the operating state of the crane gantry crane body (1).

2. The crane / gantry crane safety windproof alarm system as described in claim 1, characterized in that, The crane gantry crane body (1) is provided with a number of placement racks (5) for accommodating the iron shoe body (2). The number of placement racks (5) is the same as that of the second sensing component (32) and their positions correspond. Placement slots (51) are provided on the placement racks (5) as storage positions.

3. A crane / gantry crane safety windproof alarm system as described in claim 1 or 2, characterized in that, The first sensing component (31) and the second sensing component (32) are non-contact sensors or contact sensors that cooperate with each other.

4. A crane / gantry crane safety windproof alarm system as described in claim 1 or 2, characterized in that, The crane gantry crane body (1) includes a crossbeam (11) and several support frames (12) set at both ends of the crossbeam (11). Each support frame (12) is equipped with several wheels (13). The left and right ends of the support frame (12) are connected to a shoe body (2), a placement frame (5) and a second sensing component (32).

5. A crane / gantry crane safety windproof alarm system as described in claim 4, characterized in that, The iron shoe body (2) has an arc-shaped surface (21) on one side that fits with the wheel (13).

6. The crane / gantry crane safety windproof alarm system as described in claim 5, characterized in that, The bottom end of the iron shoe body (2) is fixedly connected to a limiting member (22), and the bottom of the limiting member (22) is provided with a slot (221), which is embedded and adapted to the working track of the crane gantry crane.

7. A crane / gantry crane safety windproof alarm system as described in claim 6, characterized in that, The iron shoe body (2) is connected to the crane gantry crane body (1) by a flexible connecting chain (6).

8. A crane / gantry crane safety windproof alarm system as described in claim 7, characterized in that, Pressure sensors are fixedly installed on the inner walls of the arc-shaped surface (21) and the slot (221). The pressure sensors are electrically connected to the monitoring and control system (4) through a flexible connecting chain (6) to determine whether the iron shoe body (2) is wedged into the working position.

9. A safety windproof alarm system for cranes and gantry cranes as described in claim 1, characterized in that, The monitoring and control system (4) includes: The PLC controller has its signal input terminals electrically connected to the first sensing component (31) and the second sensing component (32) respectively, for receiving signals from the first sensing component (31) and the second sensing component (32), and determining whether the iron shoe body (2) is in the storage position or the working position according to the relative state of the signals; the first sensing component (31) and the second sensing component (32) are configured to output a signal that the iron shoe body (2) is in the storage position when mutual induction occurs, and to output a signal that the iron shoe body (2) is in the working position when no mutual induction occurs; The human-machine interaction module is connected to the signal output terminal of the PLC controller and is used to provide feedback on the position status of the iron shoe body (2); The relay is connected to the control output terminal of the PLC controller and the travel control circuit of the crane gantry crane body (1), and is used to output control signals to the crane gantry crane body (1) according to the detection results of the PLC controller.

10. A safety windproof alarm system for cranes and gantry cranes as described in claim 9, characterized in that, When the PLC controller detects that at least one of the iron shoe bodies (2) is not in the storage position, the relay outputs a locking signal to prohibit or interrupt the operation and movement of the crane gantry crane body (1).

Images