Automatic anchoring system of gantry crane

Abstract

The utility model discloses an automatic anchoring system of a gantry crane, and relates to the technical field of anchoring of gantry cranes. Comprising an electric windproof pull rod, an electric anchoring insertion plate, a walking mechanism position detection device, an under-machine electric cabinet and an on-machine control station, and centralized control and under-machine operation of the portal crane anchoring system and on-machine remote automatic operation of the portal crane anchoring system are achieved. The actual position of the gantry crane walking mechanism is accurately detected through the absolute value encoder and the laser sensor, the windproof pull rod and the anchoring insertion plate can be operated in a cab through one key to automatically complete the anchoring action, the defects that a traditional manual anchoring system is large in labor amount and long in consumed time are overcome, the production efficiency is improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flame cutting guns, and in particular relates to an automatic anchoring system for a portal crane. Background Art

[0002] Portal cranes have a large windward area and a high center of wind action, making them very sensitive to wind loads. In addition, because the front of the port terminal is open and unsheltered, when hit by a typhoon, the equipment is very vulnerable to wind damage. In recent years, extreme weather has occurred frequently, and the level of typhoons has become increasingly high, resulting in an increasing number of accidents causing catastrophic damage to port equipment.

[0003] The gantry crane mainly uses windproof anchoring devices such as manual windproof cables and manual anchoring plates. During the anchoring operation, the gantry crane needs to be moved to the anchor pit first, and the anchoring plate needs to be manually inserted into the anchor pit. After locking the windproof cable, the windproof cable is pre-tightened by manually turning the hand wheel. The manual windproof pull rods located at the four corners of the gantry crane's traveling mechanism are relatively bulky, and the manual anchoring operation requires 3-4 people, which requires a lot of manpower. The four windproof pull rods and two anchoring plates need to be manually operated one by one, which is time-consuming and has low work efficiency, and cannot meet the requirements of emergency windproof anchoring. Utility Model Content

[0004] The utility model aims to provide an automatic anchoring system for a portal crane to solve the technical problem of nozzle damage of a flame cutting gun proposed in the background technology.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: an automatic anchoring system for a gantry crane, comprising an electric windproof pull rod and an electric anchoring plate, a walking mechanism position detection device, an under-machine electric control box and an on-machine control station, the electric windproof pull rod for realizing the switching between the gantry crane's free walking state and the windproof anchoring state is installed on the side of the gantry end beam of the gantry crane, the electric anchoring plate for realizing the switching between the gantry crane's free walking state and the windproof anchoring state is installed at the end of the gantry crane's walking mechanism, and the walking mechanism position detection device comprises an absolute value encoder and a laser sensor installed on the inner end of the gantry crane's walking mechanism.

[0006] Preferably, the under-machine electric control box includes a PLC, a touch screen, a switch, a wireless transmitter and a setting operation panel, and the touch screen, the switch and the absolute encoder communicate via an Ethernet connection.

[0007] Preferably, the PLC is composed of a CPU module, a digital input and output module and an analog input module, and the CPU module and the touch screen are connected to a switch via a network cable.

[0008] Preferably, the operation panel includes a pull rod extension and retraction button with light, a plug board insertion and lifting selection switch, a local remote switching switch, a pull rod extension and retraction indicator light, a plug board insertion and lifting into place indicator light and an alarm buzzer arranged in an electrical control box under the machine.

[0009] Preferably, the onboard control station includes a wireless receiving device and a driver's cab operation box arranged in the driver's cab, the driver's cab operation box is provided with buttons, selection switches, a buzzer, an anchor indicator light and a moving indicator light, and the wireless receiving device communicates wirelessly with the operation panel via a wireless transmitting device.

[0010] Preferably, each electric windproof pull rod has a built-in pin sensor and a displacement sensor, an anchor hook is provided under the displacement sensor, and a digital input and output module and an analog input module are connected to the pin sensor and the displacement sensor.

[0011] The automatic anchoring system of a portal crane of the utility model has the following advantages:

[0012] The automatic anchoring system of a gantry crane realizes the centralized control and operation of the gantry crane anchoring system and the remote automatic operation of the gantry crane anchoring system on the gantry crane through the arrangement of the electric control box under the gantry crane, the control station on the gantry crane, the electric windproof pull rod and the electric anchoring plug plate. The actual position of the gantry crane travel mechanism is accurately detected by the absolute value encoder and the laser sensor. The windproof pull rod and the anchoring plug plate can be operated in the driver's cab with one button to automatically complete the anchoring action, which reduces the defects of the traditional manual anchoring system that requires much labor and is time-consuming, improves production efficiency, and reduces the labor intensity of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the large vehicle in the walking state of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the preparatory anchoring state of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the large vehicle moving into position according to the utility model;

[0018] Figure 5It is a schematic diagram of the tension rod jacking structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the electric anchoring plug board of the utility model;

[0020] Figure 7 This is a schematic diagram of the control module structure of the utility model;

[0021] Figure 8 It is a schematic diagram of the operating box in the driver's cab of the present utility model.

[0022] Markings in the figure: A1, electric windproof pull rod; A11, pin sensor; A12, displacement sensor; A13, anchor hook;

[0023] A2, electric anchoring plug-in plate; A21, servo electric cylinder; A22, plug-in plate;

[0024] A3, PLC; A31, touch screen; A32, switch; A33, wireless transmitter; A34, operation panel; A35, wireless receiver; A36, driver's cab operation box; A361, button; A362, selection switch; A363, buzzer; A364, anchor indicator light; A365, moving indicator light; A37, absolute encoder; A38, laser sensor. DETAILED DESCRIPTION

[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0026] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0029] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0030] In order to better understand the purpose, structure and function of the utility model, the automatic anchoring system of a portal crane of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] like Figure 1 As shown, the utility model is an automatic anchoring system for a gantry crane, comprising an electric windproof pull rod A1 and an electric anchoring plug plate A2, a walking mechanism position detection device, an under-machine electric control box and an on-machine control station. The gantry crane comprises an electric windproof pull rod A1 installed on the side of the gantry gantry end beam, the electric windproof pull rod A1 can be telescopic in the vertical direction, and is used to realize the switching between the free walking state and the windproof anchoring state of the gantry crane. The electric anchoring plug plate A2 is installed at the end of the gantry crane walking mechanism, the electric anchoring plug plate A2 can be telescopic in the vertical direction, and is used to realize the switching between the free walking state and the windproof anchoring state of the gantry crane. The walking mechanism position detection device comprises an absolute value encoder A37 and a laser sensor A38, the absolute value encoder A37 and the laser sensor A38 are installed on the inner side end of the gantry crane walking mechanism, and are used to detect the real-time position of the large machine. The under-machine electric control box is used to realize the centralized control and under-machine operation of the gantry crane anchoring system, and the on-machine control station communicates and interacts with the under-machine electric control box to realize the on-machine remote automatic operation of the gantry crane anchoring system.

[0032] There are two sets of electric windproof pull rods A1 on the sea side and the land side, which are driven by a three-phase asynchronous motor to extend and retract up and down.

[0033] The walking mechanism position detection device, one set on the sea side and one on the land side, can accurately detect the actual position of the gantry crane walking mechanism through the absolute value encoder A37 and the laser sensor A38. The electric windproof pull rod A1 and the electric anchoring plug plate A2 can be operated by one button in the driver's cab to automatically complete the anchoring action, reducing the defects of the traditional manual anchoring system that requires a lot of manpower and a long time, improving production efficiency and reducing the labor intensity of operators.

[0034] like Figure 2-Figure 8 As shown, the under-machine electrical control box includes PLCA3, a touch screen A31, a switch A32, a wireless transmitter A33 and an operation panel A34.

[0035] PLCA3 includes a CPU module, a digital input and output module and an analog input module. The CPU module and the touch screen are connected to a switch via a network cable.

[0036] The operation panel A34 includes a pull rod extension and retraction lighted button, a plug board insertion and lifting selection switch, a local remote switching switch, a pull rod extension and retraction position indicator light, a plug board insertion and lifting position indicator light and an alarm buzzer.

[0037] The onboard control station includes a wireless receiving device A35 and a driver's cab operating box A36, and the driver's cab operating box A36 is provided with a button A361, a selection switch A362, a buzzer A363, an anchor indicator light A364 and a moving indicator light A365.

[0038] Each electric windproof pull rod A1 has a built-in pin sensor A11 and a displacement sensor A12. An anchor hook A13 is provided below the displacement sensor A12. The pin sensor A11 is used to detect the pre-tightening force of the pull rod, and the displacement sensor A12 is used to detect the extension stroke of the pull rod.

[0039] Two corresponding anchor hooks A13 are fixed to the foundation. When the electric windproof pull rod A1 hooks the anchor hook A13 and pre-tightens it, the wind force on the portal crane is transmitted to the anchor hook A13 to play the role of windproof anchoring. An electric anchor plug plate A2 is fixedly connected to one end of the portal leg. When the plug plate A22 is inserted into the foundation anchor pit, it plays the role of windproof anchoring. The absolute encoder A37 and the laser sensor A38 are fixedly connected to one end of the portal leg to detect and calibrate the current sea side position of the portal crane's walking mechanism.

[0040] When the door machine moves in the walking direction shown in the figure, the electric windproof rod A1 is in the retracted state. When the electric windproof rod A1 is ready to enter the anchoring state, the electric windproof rod A1 extends downward to the position, and when the walking mechanism moves to the anchoring position, the electric windproof rod A1 is pre-tightened upward to hook the anchor hook A13, and stops after reaching the preset pre-tightening force.

[0041] Each electric anchoring plug plate A2 has a built-in servo electric cylinder A21 and a plug plate A22, and the plug plate A22 is used for being inserted into a foundation anchoring pit.

[0042] There are two sets of electric anchoring plug plates A2 on the sea side and the land side, which are driven to extend and retract up and down by a servo driver and a servo motor.

[0043] When the servo cylinder A21 of each electric anchoring plugboard A2 is retracted, the plugboard A22 is in a raised state. When ready to anchor, the servo cylinder A21 extends and inserts the plugboard A22 into the foundation anchor pit through the shaft pin and the pull plate. The limit switch is used to detect whether the current plugboard A22 is in the anchoring state.

[0044] Ethernet communication is carried out through the switch A32, the touch screen A31 and the absolute encoder A37. The touch screen A31 is used to display the current equipment status and fault information of the anchoring system and assist the anchoring operation. The laser sensor A38, the button A361 on the operation panel A34, the selection switch A362, the buzzer A363, the anchor indicator light A364 and the moving indicator light A365 and the related limit switches, relays and contactors are connected to the digital input and output module of PLCA3. The pin sensor A11 and the displacement sensor A12 of the electric windproof pull rod A1 are connected to the analog input module of PLCA3. The button A361 on the driver's cab operation box A36 controls the switch output point of the wireless transmitter A33 through the input point of the wireless receiving device A35, and the switch output point of the wireless transmitter A33 controls part of the switch input point of PLCA3 through the intermediate relay. Some of the switch output points of PLCA3 control the output points of the wireless receiving device A35 through the switch input points of the wireless transmitting device A33, and then control the anchor indicator lights A364 and A335 on the driver's cab operation box A36.

[0045] The button A361 in the operator's cab operation box A36 is used for one-touch operation of the anchoring system, the selection switch A362 is used to select the switching between the onboard automatic mode and the offboard manual mode of the anchoring system, the buzzer A363 is used for system alarm, the anchoring indicator light A364 is used to indicate whether the system currently allows one-touch anchoring operation, and the moving indicator light A365 is used to indicate whether the gantry crane trolley has moved to the anchoring position.

[0046] When preparing for windproof anchoring, the driver turns the selector switch A362 to remote mode, and the laser sensor A38 and the calibration position reflector enter the control feedback state. The driver operates the trolley travel mechanism to move toward the anchor position, and automatically stops when it reaches the calibration position. At the same time, the system automatically starts encoder calibration.

[0047] The trolley runs to the anchor position set by the encoder, and the anchor positions on both sides are within the deviation range. The system considers that the anchor is in place, the trolley stops automatically, and the movement indicator light A365 lights up.

[0048] When the anchor indicator light A364 is on, the driver presses the button A361, and the electric windproof rod A1 mechanism automatically moves and begins to extend the rod outward. After each mechanism stops automatically according to the travel limit device, the driver checks whether the rod and anchor position are in place. If the rod travel is in place, the system measures whether the rod warning force meets the requirements and records the windproof pulling force; if the rod exceeds the travel warning force and still does not meet the requirements, the system alarms and requires maintenance.

[0049] After the electric windproof pull rod A1 is anchored, the electric anchor plug plate A2 automatically descends. After detecting that the anchor limit is in place, the system stops and issues a prompt. The anchor pit is manually checked to confirm that it is fully anchored.

[0050] Turn the selection switch A362 to local mode, and the driver can operate the relevant anchoring device manually through the operation panel A34 of the under-machine electrical control cabinet.

[0051] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An automatic anchoring system for a portal crane, characterized in that: The invention comprises an electric windproof pull rod (A1) and an electric anchoring plug plate (A2), a walking mechanism position detection device, an under-machine electric control box and an on-machine control station. The electric windproof pull rod (A1) for realizing the switching between the free walking state and the windproof anchoring state of the gantry crane is installed on the side of the gantry end beam of the gantry crane. The electric anchoring plug plate (A2) for realizing the switching between the free walking state and the windproof anchoring state of the gantry crane is installed on the end of the gantry crane walking mechanism. The walking mechanism position detection device comprises an absolute value encoder (A37) and a laser sensor (A38) installed on the inner end of the gantry crane walking mechanism.

2. The automatic anchoring system for a portal crane according to claim 1, characterized in that: The under-machine electric control box comprises a PLC (A3), a touch screen (A31), a switch (A32), a wireless transmitter (A33) and a setting operation panel (A34); the touch screen (A31), the switch (A32) and the absolute value encoder (A37) are connected and communicated via Ethernet.

3. The automatic anchoring system for a portal crane according to claim 2, characterized in that: The PLC (A3) is composed of a CPU module, a digital input and output module and an analog input module. The CPU module and the touch screen (A31) are connected to a switch (A32) via a network cable.

4. The automatic anchoring system for a portal crane according to claim 2, characterized in that: The operation panel (A34) comprises a pull rod extension and retraction lighted button arranged in the electric control box under the machine, a plug board insertion and lifting selection switch, a local remote switching switch, a pull rod extension and retraction position indicator light, a plug board insertion and lifting position indicator light and an alarm buzzer.

5. The automatic anchoring system for a portal crane according to claim 2, characterized in that: The onboard control station comprises a wireless receiving device (A35) and a driver's cab operating box (A36) arranged in the driver's cab. The driver's cab operating box (A36) is provided with a button (A361), a selection switch (A362), a buzzer (A363), an anchor indicator light (A364) and a moving indicator light (A365). The wireless receiving device (A35) wirelessly communicates with the operating panel (A34) via a wireless transmitting device (A33).

6. The automatic anchoring system for a portal crane according to claim 1, characterized in that: Each electric windproof pull rod (A1) has a built-in pin shaft sensor (A11) and a displacement sensor (A12), an anchor hook (A13) is provided below the displacement sensor (A12), and a digital input and output module and an analog input module are connected to the pin shaft sensor (A11) and the displacement sensor (A12).

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