Container Lock Pin Detection Equipment, Transfer Platform with the Same, and Double-Gantry Quayside Crane

Abstract

The present invention provides a container locking pin detection device, comprising: at least a pair of anti-pressure recognition devices, a PLC controller and two visual display devices. The PLC controller is respectively communicatively connected with the anti-pressure recognition devices, the visual display devices and the quay crane control system. The two visual display devices are respectively arranged at both ends of the long axis of the container. A pair of anti-pressure recognition devices includes a transmitting device and a receiving device. The transmitting device and the receiving device both include: a base, a grating mounting bracket, two kinetic energy absorption mechanisms, four stabilizing mechanisms and a grating limit. The grating mounting bracket is arranged directly below both sides of the long axis of the container. The tops of the two kinetic energy absorption mechanisms are arranged in the middle of both ends of the bottom of the grating mounting bracket, and the bottoms of the two kinetic energy absorption mechanisms are fixed to the base. The tops of the four stabilizing mechanisms are arranged on both sides of both ends of the bottom of the grating mounting bracket, and the bottoms of the four stabilizing mechanisms are fixed to the base. The grating limit is installed on one side of the bottom of the grating mounting bracket.

Description

Technical Field

[0001] The present invention relates to the detection technology of container locking pins, and particularly to a container locking pin detection device, a transfer platform having the same, and a double trolley quay crane. Background Art

[0002] Under the background of the rapid development of science and technology, the automation of container terminals is developing faster and faster. As a high-efficiency and high-reliability loading and unloading device, the double trolley quay crane has become an essential configuration for automated terminals. During the process of loading and unloading containers, the detection of the state of container locking pins has become an important link to improve the loading and unloading efficiency of automated terminals and quay cranes in container yards.

[0003] The traditional process of unloading containers from ships mainly involves lifting the container by the traveling trolley on a conventional quay crane. The traveling trolley moves the container from the sea side to above the container truck on the terminal along the track, and then places the container on the container truck. After manual inspection and removal of the container locking pins, the container truck takes the container into the yard.

[0004] The process of loading and unloading containers at automated terminals mainly involves lifting the container by the first traveling trolley on the gantry trolley system in the double trolley quay crane. The first traveling trolley moves the container from the sea side to above the container pedestal on the transfer platform along the track, and then places the container on the container pedestal. After inspection and removal of the container locking pins, the second traveling trolley on the main trolley system lifts the container. The second traveling trolley moves the container from the middle of the doorframe to the land side along the track, and then places the container on an AGV (Automated Guide Vehicle), and the AGV takes the container into the yard.

[0005] At present, the detection of container locking pins mainly relies on manual visual inspection and determination before disassembly, but manual determination is bound to have missed judgments. If the container locking pins are missed and enter the yard, it is extremely easy to cause the side overturning accident of stacked containers. In addition, reducing the working intensity of locking pin workers and improving their working comfort will also be the key development directions.

[0006] Therefore, providing a container locking pin detection device has become an urgent problem to be solved in this field. Summary of the Invention

[0007] The purpose of the present invention is to provide a container locking pin detection device, a transfer platform having the same, and a double trolley quay crane, so as to avoid the side overturning accident of stacked containers caused by missing container locking pins, and at the same time reduce the working intensity of workers and improve their working efficiency.

[0008] To achieve the above object, the present invention provides a container lock pin detection device, including: at least a pair of anti-pressure identification devices, a PLC controller, and two visual display devices. The PLC controller is respectively communicatively connected to the anti-pressure identification devices, the visual display devices, and the quay crane control system. The two visual display devices are respectively arranged at both ends of the long axis of the container. A pair of anti-pressure identification devices includes a transmitting device and a receiving device. The transmitting device and the receiving device both include:

[0009] A base;

[0010] A grating mounting bracket, arranged directly below both sides of the long axis of the container;

[0011] Two kinetic energy absorption mechanisms. The tops of the two kinetic energy absorption mechanisms are respectively arranged in the middle of the two ends of the bottom of the grating mounting bracket, and the bottoms of the two kinetic energy absorption mechanisms are fixed on the base;

[0012] Four stabilizing mechanisms. The tops of the four stabilizing mechanisms are respectively arranged on both sides of the two ends of the bottom of the grating mounting bracket, and the bottoms of the four stabilizing mechanisms are respectively fixed on the base;

[0013] A grating limit, installed on one side of the bottom of the grating mounting bracket;

[0014] Among them, the grating limit in the transmitting device is a transmitting grating, the grating limit in the receiving device is a receiving grating. The transmitting grating is arranged on one side of the bottom of the grating mounting bracket close to the corresponding receiving device, and the receiving grating is arranged on one side of the bottom of the grating mounting bracket close to the corresponding transmitting device.

[0015] In one embodiment, the container lock pin detection device includes eight pairs of anti-pressure identification devices, and the eight pairs of anti-pressure identification devices are symmetrically arranged in pairs along the length direction of the container directly below both sides of the long axis of the container.

[0016] In one embodiment, the two kinetic energy absorption mechanisms include:

[0017] Two first positioning rings, respectively arranged in the middle of the two ends of the bottom of the grating mounting bracket;

[0018] Two second positioning rings, respectively arranged at positions on the top of the transfer platform opposite to the two first positioning rings;

[0019] Two height adjustment components. The top of each height adjustment component is arranged on the bottom of the grating mounting bracket and is respectively located within the two first positioning rings, and the bottom of each height adjustment component is arranged on the top of the transfer platform and is respectively located within the second positioning rings opposite to the first positioning rings;

[0020] Two elastic members are respectively sleeved on the outer periphery of a height adjustment assembly. The first end of each elastic member is connected to the bottom of the grating mounting bracket and is located within the first positioning ring, and the second end of each elastic member is connected to the top of the transfer platform and is located within the second positioning ring opposite to the first positioning ring.

[0021] In one embodiment, the height adjustment assembly includes:

[0022] Two first fixed hanging rings are arranged at the bottom of the grating mounting bracket and are respectively located within the two first positioning rings;

[0023] Two second fixed hanging rings are arranged at the top of the transfer platform and are respectively located within the second positioning rings;

[0024] Two first wire rope assemblies, and the two ends of each first wire rope assembly are respectively connected to the first fixed hanging ring and the second fixed hanging ring that are opposite in position.

[0025] In one embodiment, the elastic member is a spring.

[0026] In one embodiment, the four stabilizing mechanisms include:

[0027] Four third fixed hanging rings are respectively arranged on both sides at the two ends of the bottom of the grating mounting bracket;

[0028] Four fourth fixed hanging rings are respectively arranged at the top of the transfer platform and are located at positions opposite to the four third fixed hanging rings;

[0029] Four second wire rope assemblies, the first end of each second wire rope assembly is connected to a third fixed hanging ring, and the second end of each second wire rope assembly is connected to a fourth fixed hanging ring.

[0030] In one embodiment, the distance between the anti-pressure recognition device and the lower surface of the container is less than or equal to 20 mm.

[0031] In one embodiment, a control system is configured in the visualization display device, and the control system and the quay crane control system establish a connection with mutual interlock protection.

[0032] To achieve the above object, the present invention further provides a transfer platform, including:

[0033] A platform structure, and the platform structure is connected to the quay crane through two tie rods;

[0034] A container pedestal is arranged on the top of the platform structure;

[0035] A container guide frame is installed on the top of the platform structure and is located around the container pedestal;

[0036] The container lock pin detection device as described above is installed on the top of the platform structure and is located between the container pedestal and the container guide frame.

[0037] To achieve the above object, the present invention also provides a double trolley quay crane, comprising:

[0038] A main girder;

[0039] A portal connecting beam, arranged below the main girder;

[0040] A lower cross beam, arranged below the portal connecting beam;

[0041] A main trolley system, the main trolley system is slidably connected to the main girder;

[0042] A gantry trolley system, the gantry trolley system is slidably connected to the portal connecting beam;

[0043] A transfer platform, the transfer platform is arranged above the lower cross beam and is suspended below the portal connecting beam;

[0044] The container lock pin detection device as described above is arranged on the transfer platform.

[0045] The present invention has the following beneficial effects:

[0046] 1. The container lock pin detection device provided by the present invention, and the transfer platform and the double trolley quay crane having the same can automatically identify the state of the lock pins under each corner of the container, provide a visual display device in the non-operation area of the lock pin workers, improve the work safety of the lock pin workers and reduce the work intensity, and improve the reliability of the double trolley quay crane for loading and unloading containers.

[0047] 2. The configuration of the kinetic energy absorption mechanism and the stable mechanism in the container lock pin detection device provided by the present invention realizes the energy absorption after passive impact and quickly returns to the original position, avoiding hardware damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a front view schematic diagram of the layout of the container lock pin detection device according to an embodiment of the present invention;

[0049] Figure 2 It is a top view schematic diagram of the layout of the container lock pin detection device according to an embodiment of the present invention;

[0050] Figure 3 It is a front view schematic diagram of the structure of a pair of anti-pressure identification devices in the container lock pin detection device according to an embodiment of the present invention;

[0051] Figure 4 For Figure 3 The schematic diagram of the structure along the A direction in;

[0052] Figure 5 is Figure 3 a schematic structural diagram of the launching device in

[0053] Figure 6 a schematic structural diagram of the visual display device in the container lock pin detection device according to an embodiment of the present invention;

[0054] Figure 7 a schematic structural diagram of the transfer platform of the container lock pin detection device according to an embodiment of the present invention;

[0055] Figure 8 a schematic structural diagram of the double - trolley quay crane of the container lock pin detection device according to an embodiment of the present invention;

[0056] Figure 9 a schematic flow diagram of detecting the container lock pin by using the container lock pin detection device according to an embodiment of the present invention.

[0057] Reference numerals

[0058] 100, double - trolley quay crane; 110, doorframe connecting beam; 120, lower cross - beam; 200, transfer platform; 210, platform structure; 220, container pedestal; 300, anti - pressure identification device; 310, grating mounting bracket; 320, grating limit; 330, kinetic energy absorption mechanism; 331, first positioning ring; 332, first wire rope assembly; 333, spring; 334, second fixed lifting ring; 335, positioning bolt; 336, fixing nut; 337, second positioning ring; 338, first fixed lifting ring; 340, stabilizing mechanism; 341, fixing nut; 342, fourth fixed lifting ring; 343, second wire rope assembly; 344, third fixed lifting ring; 350, base; 400, visual display device; 500, main trolley system; 600, gantry trolley system. Detailed embodiments

[0059] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not used to limit the invention.

[0060] As Figure 1-2As shown in the figure, the present invention provides a container lock pin detection device, comprising: at least a pair of anti-pressure identification devices 300, a PLC controller, and two visual display devices 400. The PLC controller is respectively communicatively connected to the anti-pressure identification devices 300, the visual display devices 400, and the quay crane control system. The two visual display devices 400 are respectively arranged at both ends of the long axis of the container. A pair of anti-pressure identification devices 300 includes a transmitting device and a receiving device. The transmitting device and the receiving device both include: a base 350, a grating mounting bracket 310, two kinetic energy absorption mechanisms 330, four stabilizing mechanisms 340, and a grating limit 320. The grating mounting bracket 310 is arranged directly below both sides of the long axis of the container. The tops of the two kinetic energy absorption mechanisms 330 are respectively arranged in the middle of both ends of the bottom of the grating mounting bracket 310, and the bottoms of the two kinetic energy absorption mechanisms 330 are fixed on the base 350. The tops of the four stabilizing mechanisms 340 are respectively arranged on both sides of both ends of the bottom of the grating mounting bracket 310, and the bottoms of the four stabilizing mechanisms 340 are respectively fixed on the base 350. The grating limit 320 is installed on one side of the bottom of the grating mounting bracket 310. Among them, the grating limit 320 in the transmitting device is a transmitting grating, and the grating limit 320 in the receiving device is a receiving grating. The transmitting grating is arranged on one side of the bottom of the grating mounting bracket 310 close to the corresponding receiving device, and the receiving grating is arranged on one side of the bottom of the grating mounting bracket 310 close to the corresponding transmitting device. See Figure 3 . During the ship unloading operation, when the container is placed on the container pedestal 100 of the transfer platform, the grating limit detection condition is triggered. Once the grating limit detects that the bottom lock pin of the container is not removed, information is sent to the PLC controller through a relay, and the quay crane control system operation is interrupted by the PLC controller. In this embodiment, preferably, the container lock pin detection device includes eight pairs of anti-pressure identification devices, and the eight pairs of anti-pressure identification devices are symmetrically arranged in pairs along the length direction of the container directly below both sides of the long axis of the container. See Figure 2 . The container lock pin detection device of an embodiment of the present invention can detect the unremoved or uninstalled container lock pins under single 20-foot, single 40-foot, single 45-foot, and double 20-foot containers.

[0061] Further, as Figure 4As shown in the figure, the two kinetic energy absorption mechanisms 330 include: two first positioning rings 331, two second positioning rings 337, two height adjustment components, and two elastic members. The two first positioning rings 331 are respectively arranged in the middle of both ends of the bottom of the grating mounting bracket 310. The two second positioning rings 337 are respectively arranged at positions on the top of the transfer platform opposite to the two first positioning rings 331. The top of each height adjustment component is arranged at the bottom of the grating mounting bracket 310 and is respectively located within the two first positioning rings 331, and the bottom of each height adjustment component is arranged at the top of the transfer platform and is respectively located within the second positioning rings 337 opposite to the first positioning rings 331. The two elastic members are respectively sleeved on the outer periphery of a height adjustment component. The first end of each elastic member is connected to the bottom of the grating mounting bracket 310 and is located within the first positioning ring 331, and the second end of each elastic member is connected to the top of the transfer platform and is located within the second positioning ring 337 opposite to the first positioning ring 331. The kinetic energy absorption device can absorb the vertical impact and lateral collision of the container lock head, and has an automatic reset function to protect the grating limit from being damaged by the container lock pin. And this device can be adjusted according to the actual situation of the lock pin, improving the reliability and applicability of this equipment. In this embodiment, preferably, the elastic member is a spring 333. The spring 33 is designed to cover the compression performance of all lock pin sizes and has lateral rigidity. During the operation of the quay crane, it can overcome the energy generated by the random position device and collision between the lock pin and the anti-pressure identification device due to incorrect container positioning, and can absorb the kinetic energy generated by the container landing vibration.

[0062] Furthermore, the height adjustment component includes: two first fixed lifting rings 338, two second fixed lifting rings 334, and two first wire rope assemblies 332. The two first fixed lifting rings 338 are arranged at the bottom of the grating mounting bracket and are respectively located within the two first positioning rings 331. The two second fixed lifting rings 334 are arranged at the top of the transfer platform and are respectively located within the second positioning rings 337. Both ends of each first wire rope assembly 332 are respectively connected to the first fixed lifting ring 338 and the second fixed lifting ring 334 at opposite positions. In this embodiment, preferably, the second fixed lifting ring is fixed to the top of the transfer platform through the cooperation of a positioning bolt 335 and a fixing nut 336, as shown in Figure 4 . The height adjustment component can realize the adjustment in the height direction, ensuring that the two mutually inductive grating limits 320 (emitting grating and receiving grating) are on the same horizontal plane, and realizing the adjustment of sensing and feedback of obstacle signals.

[0063] Further, as shown in Figure 5As shown in the figure, the four stabilizing mechanisms include: four third fixed lifting rings 344, four fourth fixed lifting rings 342, and four second wire rope assemblies 343. The four third fixed lifting rings 344 are respectively arranged on both sides of the two ends at the bottom of the grating mounting bracket 310. The four fourth fixed lifting rings 342 are respectively arranged on the top of the transfer platform and at positions opposite to the four third fixed lifting rings 344. Both ends of each second wire rope assembly 343 are respectively connected to the third fixed lifting ring 344 and the fourth fixed lifting ring 342 at opposite positions. After the kinetic energy absorption mechanism 330 is installed in place, the stabilizing mechanism 340 is installed to prevent the vibration generated during the operation of the equipment from affecting the grating signal, and to achieve the precise reset of the anti-pressure identification device 300 after being passively impacted by the container locking pin. The configuration of the kinetic energy absorption mechanism 330 and the stabilizing mechanism 340 realizes the energy absorption after passive impact and quickly returns to the original position to avoid hardware damage. In this embodiment, preferably, the fourth fixed lifting ring 342 is arranged on the top of the transfer platform through a fixing nut 341.

[0064] Furthermore, the distance between the anti-pressure identification device 300 and the lower surface of the container is less than or equal to 20 mm. In this embodiment, preferably, the anti-pressure identification device 300 is installed about 10 mm away from the lower surface of the container, ensuring that the grating source is no more than 20 mm away from the lower surface of the container, which is convenient for identifying various types of container locking pins.

[0065] Furthermore, a control system is configured in the visual display device 400, and the control system and the quay crane control system establish a connection with mutual interlock protection. This control system detects the state where the locking pin is not unlocked, and ensures that the locking pin is executed to be unlocked. The worker will press a button to indicate that the unlocking of the locking pin has been completed. This control system will automatically detect that the unlocking of the locking pin has been correctly completed, and feedback it to the quay crane control system, and issue a command to execute the lifting of the gantry trolley and the moving trolley.

[0066] The visual display device 400 is arranged at both ends of the container pedestal, arranged along the length direction of the container, and the dimension in the length direction exceeds the non-working area of a 45-foot container. Workers' non-working walking and observation will not affect the normal loading and unloading operations of the quay crane. Workers can plan and determine the shortest route for manual intervention work according to the information fed back by the visual display device 400, thereby reducing the working intensity of the workers. Specifically, when the container is placed on the transfer platform, if there are unremoved lock heads remaining under the container, then the light source emitting the grating will be interrupted, and the receiving grating cannot receive the signal. The receiving grating will feedback the signal to the PLC controller, trigger the control loop, control the equipment to stop operating, and display the locking pin information on the visual device, optimizing and guiding the working path of the operators. When the signal is reset, the main equipment is allowed to continue normal operation. As Figure 9 shown, the method for detecting the container locking pin by using the container locking pin detection equipment according to an embodiment of the present invention includes the following steps:

[0067] Step S1: Place the container on the transfer platform.

[0068] Step S2: The container occupancy limit detection checks if there is a container. If so, proceed to Step S3; if not, return to Step S1.

[0069] Step S3: Use the container locking pin detection device according to an embodiment of the present invention to detect if there is a remaining locking pin. If so, stop the operation of the gantry ACCS (Automatic Crane Control System) through the PLC controller, and then the operator removes the remaining locking pin and resets it, and then proceed to Step S4; if not, directly proceed to Step S4.

[0070] Step S4: The gantry trolley ACCS continues to operate, waits for the next instruction, and returns to Step S1.

[0071] The present invention also provides a transfer platform, as Figure 7 shown, including: a platform structure 210, a container pedestal 220, a container guide frame, and the container locking pin detection device described above. The platform structure 210 is connected to the quay crane by two tie rods. The container pedestal 220 is arranged on the top of the platform structure. The container guide frame is installed on the top of the platform structure and is located around the container pedestal 220. The container locking pin detection device includes at least a pair of anti-pressure recognition devices 300 and two visual display devices 400. Among them, the anti-pressure recognition devices 300 are installed on the top of the platform structure and are directly below both sides of the long axis of the container. The anti-pressure recognition devices 300 are located between the container pedestal 220 and the container guide frame. The two visual display devices 400 are respectively arranged at both ends of the long axis of the container.

[0072] The present invention also provides a double-trolley quay crane, as Figure 8As shown in the figure, it includes: a main beam, a doorframe connecting beam 110, a lower crossbeam 120, a main trolley system 500, a gantry trolley system 600, a transfer platform 200, and the container locking pin detection device described above. The double-trolley quay crane uses the transfer platform 200 as a temporary storage platform for the main trolley and the gantry trolley to hoist and transfer containers. The doorframe connecting beam 110 is arranged below the main beam. The lower crossbeam 120 is arranged below the doorframe connecting beam 110. The main trolley system 500 is slidably connected to the main beam. The gantry trolley system 600 is slidably connected to the doorframe connecting beam 110. The transfer platform 200 is arranged above the lower crossbeam 120 and is suspended below the doorframe connecting beam 110. The container locking pin detection device is arranged on the transfer platform 200. Among them, the transfer platform 200 is installed above the lower crossbeam 120 of the quay crane 100 and is suspended below the doorframe connecting beam 110 for placing containers, and is used for disassembling and assembling the container locking pins to save the time of one container hoisting cycle.

[0073] The present invention has the following beneficial effects:

[0074] 1. The container locking pin detection device provided by the present invention, and the transfer platform and double-trolley quay crane having the same can automatically identify the state of the locking pins under each corner of the container, provide a visual display device in the non-operation area of the locking pin workers, improve the work safety of the locking pin workers, reduce the work intensity, and improve the reliability of the double-trolley quay crane for loading and unloading containers.

[0075] 2. The configuration of the kinetic energy absorption mechanism and the stabilizing mechanism in the container locking pin detection device provided by the present invention realizes the energy absorption after passive impact and quickly returns to the original position, avoiding hardware damage.

[0076] It should be noted that unless otherwise clearly specified and limited, the terms such as "installation", "setting", "connection" used in the description of the present application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can also be the communication inside two components. Those skilled in the art can understand its specific meaning in the present application according to the specific situation. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0077] The above embodiments are only further descriptions of the present invention, and do not limit the present invention in other forms. The present invention can also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and changes according to the present invention, but these corresponding modifications and changes should all fall within the protection scope of the present invention.

Claims

1. A container locking pin detection device, characterized in that, Comprising: At least a pair of anti-pressure identification devices, a PLC controller, and two visualization display devices. The PLC controller establishes communication connections with the anti-pressure identification devices, the visualization display devices, and the quay crane control system respectively. The two visualization display devices are respectively arranged at both ends of the long axis of the container. A pair of anti-pressure identification devices includes a transmitting device and a receiving device. Both the transmitting device and the receiving device include: A base; A grating mounting bracket, arranged directly below both sides of the long axis of the container; Two kinetic energy absorption mechanisms. The tops of the two kinetic energy absorption mechanisms are respectively arranged in the middle of the two ends of the bottom of the grating mounting bracket, and the bottoms of the two kinetic energy absorption mechanisms are fixed on the base. The two kinetic energy absorption mechanisms include: Two first positioning rings, respectively arranged in the middle of the two ends of the bottom of the grating mounting bracket; Two second positioning rings, respectively arranged at positions on the top of the transfer platform opposite to the two first positioning rings; Two height adjustment components. The top of each height adjustment component is arranged at the bottom of the grating mounting bracket and is respectively located within the two first positioning rings, and the bottom of each height adjustment component is arranged at the top of the transfer platform and is respectively located within the second positioning rings opposite to the first positioning rings; Two elastic members, respectively sleeved on the outer periphery of a height adjustment component. The first end of each elastic member is connected to the bottom of the grating mounting bracket and is located within the first positioning ring, and the second end of each elastic member is connected to the top of the transfer platform and is located within the second positioning ring opposite to the first positioning ring; Four stabilizing mechanisms. The tops of the four stabilizing mechanisms are respectively arranged on both sides of the two ends of the bottom of the grating mounting bracket, and the bottoms of the four stabilizing mechanisms are respectively fixed on the base. The four stabilizing mechanisms include: Four third fixed lifting rings, respectively arranged on both sides of the two ends of the bottom of the grating mounting bracket; Four fourth fixed lifting rings, respectively arranged at positions on the top of the transfer platform opposite to the four third fixed lifting rings; Four second wire rope assemblies. The first end of each second wire rope assembly is connected to a third fixed lifting ring, and the second end of each second wire rope assembly is connected to a fourth fixed lifting ring; A grating limit, installed on one side of the bottom of the grating mounting bracket; Wherein, the grating limit in the transmitting device is a transmitting grating, the grating limit in the receiving device is a receiving grating. The transmitting grating is arranged on one side of the bottom of the grating mounting bracket close to the corresponding receiving device, and the receiving grating is arranged on one side of the bottom of the grating mounting bracket close to the corresponding transmitting device.

2. The container locking pin detection device according to claim 1, characterized in that, The container lock pin detection device includes eight pairs of anti-pressure identification devices, and the eight pairs of anti-pressure identification devices are symmetrically arranged in pairs along the length direction of the container directly below both sides of the long axis of the container.

3. The container lock pin detection device according to claim 1, wherein The height adjustment component includes: Two first fixed lifting rings, arranged at the bottom of the grating mounting bracket and respectively located within the two first positioning rings; Two second fixed lifting rings, arranged at the top of the transfer platform and respectively located within the second positioning rings; Two first wire rope assemblies. The two ends of the first wire rope assembly are respectively connected to the first fixed lifting ring and the second fixed lifting ring with opposite positions.

4. The container locking pin detection device according to claim 1, characterized in that, The elastic member is a spring.

5. The container lock pin detection device according to claim 1, wherein, The distance between the anti-pressure identification device and the lower surface of the container is less than or equal to 20 mm.

6. The container locking pin detection device according to claim 1, wherein A control system is configured in the visualization display device, and the control system is connected to the quay crane control system to establish an interlocking protection connection.

7. A transfer platform, characterized in that, It includes: A platform structure, which is connected to the quay crane through two tie rods; A container pedestal, which is arranged on the top of the platform structure; A container guide frame, which is installed on the top of the platform structure and is located around the container pedestal; The container locking pin detection device according to any one of claims 1-6 is installed on the top of the platform structure and is located between the container pedestal and the container guide frame.

8. A double-gantry quay crane, characterized in that, It includes: A main beam; A door frame connecting beam, which is arranged below the main beam; A lower cross beam, which is arranged below the door frame connecting beam; A main trolley system, which is slidably connected to the main beam; A gantry trolley system, which is slidably connected to the door frame connecting beam; A transfer platform, which is arranged above the lower cross beam and is suspended below the door frame connecting beam; The container locking pin detection device according to any one of claims 1-6 is arranged on the transfer platform.

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