Container lifting appliance for detecting orientation of container door

Abstract

The utility model relates to the technical field of container lifting, in particular to a container lifting appliance for detecting the direction of a container door, which comprises a lifting appliance body for lifting a container, the container is provided with a first side plate and a second side plate, the first side plate is provided with the container door, and corner castings are respectively arranged at four corners above the container; a lock head corresponding to the corner casting is rotationally connected to the lifting appliance body, a driving assembly for driving the lock head to rotate is arranged on the lifting appliance body, first detection rods are slidably connected to the two ends, corresponding to the length direction of the container, of the lifting appliance body correspondingly, and the distance between the first detection rods is larger than the distance between the first side plate and the second side plate. The first detection rods are in transmission connection with first sensors. The orientation of the box door is detected through whether the first detection rod and the second side plate are pressed or not, the box door orientation detection device has the advantages of being simple and direct in structure and accurate and reliable in detection, and the orientation of the box door can be simply, conveniently and accurately detected.

Description

Technical Field

[0001] The present application relates to the technical field of container lifting, and in particular to a container lifting device for detecting the orientation of a container door. Background Art

[0002] The emergence of containers has changed the mode and pattern of cargo transportation in the field of modern logistics and trade. Goods can be quickly loaded into containers at the place of shipment and transported by containers, which not only greatly improves transportation efficiency, but also reduces the time and labor costs during loading and unloading and handling, and reduces the risk of cargo loss. During container transportation, the container must first be loaded using a spreader. Whether it is loaded on a vehicle or on a ship, it is usually necessary to make the container door face the direction that is convenient for subsequent personnel to open the container door in order to facilitate the inspection of the goods.

[0003] In the prior art, visual recognition or manual visual inspection is commonly used to detect the direction of the container door. The visual recognition method usually uses a camera to collect image data from both ends of the container, and then detects the collected image through image processing or deep learning to determine whether the current image contains the container door. Due to the various shapes of container doors, there are too many preliminary calibration files for the visual system, which has high requirements for the algorithm, complex system, and high cost. In addition, the stability of visual recognition is poor, and the detection results are easily affected by external light. The use of manual visual inspection not only increases the labor intensity of the operator, but also poses a safety hazard when the operator approaches the container at a close distance, and is not suitable for fully automatic process control.

[0004] Therefore, how to overcome the problems existing in the above-mentioned prior art and realize simple, convenient, accurate and reliable detection of the direction of the box door is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In order to realize simple, convenient, accurate and reliable detection of the orientation of a container door, the present application provides a container spreader for detecting the orientation of a container door.

[0006] The container spreader for detecting the door orientation provided in the present application adopts the following technical solution:

[0007] A container hoist for detecting the orientation of a container door, comprising a hoist body for hoisting a container, a lock for connecting to a corner casting of the container being rotatably connected to the hoist body, a driving assembly for driving the lock to rotate being provided on the hoist body, first detection rods being slidably connected to positions of a first side plate and a second side plate at two ends of the container on the hoist body, respectively, the distance between the first detection rods being greater than the distance between the first side plate and the second side plate of the container, a first sensor being installed on the hoist body corresponding to the first detection rods, an adjustment thread being provided on the outer side of an upper end of the first detection rod, and a top pressure head being fixedly connected to the lower end of the first detection rod.

[0008] By adopting the above technical solution, when the container is hoisted, first align the lock set on the hoist body with the corner casting, and then insert the lock into the corner casting. At this time, the first detection rod close to the first side panel will be in a suspended state, and the first detection rod close to the second side panel will be in an abutting state. The corresponding first sensor will sense the state of the corresponding first detection rod. If the first detection rod that should be in a suspended state is actually in an abutting state, and the first detection rod that should be in an abutting state is actually in a suspended state, it means that the orientation of the door is wrong. This design detects the orientation of the door by abutting the mechanical structure. It has the advantages of simple and direct structure, accurate and reliable detection, and can easily and accurately detect the direction of the door. At the same time, the automatic sensing of the first sensor is used to convert the state of the corresponding first detection rod into an electrical signal, which is conducive to the realization of fully automatic process control of hoisting containers.

[0009] Optionally, a nut is threadedly connected to the upper end of the first detection rod, the first sensor is fixedly mounted on the hanger body, and the sensing end of the first sensor faces the first detection rod. A first spring is mounted on the outer side of the first detection rod, one end of the first spring abuts against the top pressure head, and the other end of the first spring abuts against the hanger body.

[0010] By adopting the above technical solution, the nut can be used to adjust the extension length of the first detection rod. At the same time, a first spring is arranged between the first sensor and the hanger body. On the one hand, it can buffer the impact between the first sensor and the hanger body, thereby protecting the first sensor. On the other hand, the first spring can also push the first detection rod to reset after the lifting is completed, so as to facilitate the next lifting use.

[0011] Optionally, a driving block is threadedly connected to the upper end of the first detection rod, and a driving inclined surface is provided at one end of the driving block away from the first detection rod. A driven block that is slidably connected to the sling body and abuts against the driving inclined surface is provided. The sensing end of the first sensor faces the driven block, and a second spring is abutted against the driven block and the sling body.

[0012] By adopting the above technical solution, the driving inclined surface arranged on the first detection rod can drive the driven block to move, and then drive the second spring to press the first sensor. The driving inclined surface can be used to decompose the force of the spreader body and the container on the first detection rod into two forces, one for pushing the driving block to move and the other for pushing the driven block to move, thereby reducing the actual force acting on the first sensor. This can not only reduce the load requirement for the first sensor, but also help to increase the service life of the first sensor.

[0013] Optionally, an end of the driven block away from the first sensor is configured as a driven inclined surface corresponding to the driving inclined surface.

[0014] By adopting the above technical solution and utilizing the friction transmission between the driving inclined surface and the driven inclined surface, the invention has the advantages of simple structure, strong bearing capacity and easy maintenance.

[0015] Optionally, one end of the driven block away from the first sensor is rotatably connected to a roller corresponding to the driving inclined surface.

[0016] By adopting the above technical solution, the sliding friction between the driving block and the driven block is converted into rolling friction by using a roller, so that the friction coefficient can be reduced, which can not only reduce energy loss, so that the driving block can push the driven block to move more effortlessly and smoothly; but also increase the service life of the driving ramp on the driving block.

[0017] A container hoist for detecting the orientation of a container door, comprising a hoist body, a lock for connecting to a corner casting of a container being rotatably connected to the hoist body, a driving assembly for driving the lock to rotate being provided on the hoist body, a first detection rod being hingedly connected to a first side plate and a second side plate at two ends of the container on the hoist body, a first sensor being installed on the hoist body corresponding to the first detection rod, a limit block being fixedly installed on the outer side of an upper end of the hoist body corresponding to the first detection rod, and a guide wheel being rotatably connected to the lower end of the first detection rod.

[0018] By adopting the above technical solution, when the container is hoisted, first align the lock set on the hoist body with the corner casting, and then insert the lock into the corner casting. At this time, the first detection rod close to the first side panel will be in a suspended state, and the first detection rod close to the second side panel will be in an abutting state. The corresponding first sensor will sense the state of the corresponding first detection rod. If the first detection rod that should be in a suspended state is actually in an abutting state, and the first detection rod that should be in an abutting state is actually in a suspended state, it means that the orientation of the door is wrong. This design detects the orientation of the door by abutting the mechanical structure. It has the advantages of simple and direct structure, accurate and reliable detection, and can easily and accurately detect the direction of the door. At the same time, the automatic sensing of the first sensor is used to convert the state of the corresponding first detection rod into an electrical signal, which is conducive to the realization of fully automatic process control of hoisting containers.

[0019] Optionally, a third spring is connected between the first detection rod and the limit block, one end of the third spring is fixedly connected to the limit block, and the other end of the third spring is fixedly connected to the first detection rod.

[0020] By adopting the above technical solution, the third spring can be used to pull the first detection rod to reset after the lifting is completed, so as to facilitate the next lifting.

[0021] Optionally, a second detection rod is slidably connected to a position on the hanger body close to the lock, one end of the second detection rod away from the hanger body abuts against the corner casting, and a second sensor is installed on the hanger body corresponding to the second detection rod.

[0022] Optionally, the driving assembly includes a transmission arm, one end of which is fixedly connected to one end of the lock head located inside the hanger body, and the other end of the transmission arm is hingedly connected to a driving member.

[0023] By adopting the above technical solution, the driving member can drive the transmission arm to swing, and the transmission arm will cause the lock to rotate to a corresponding angle when swinging, so that the lock can be locked on the corner casting, thereby improving the degree of automation of the container during the lifting process.

[0024] Optionally, the driving element, the second sensor, and the first sensor are all electrically connected to the same control system, and the control system is electrically connected to an alarm.

[0025] By adopting the above technical solution, during the hoisting operation of the container, before the hoisting tool body lifts the container, the second sensor is first used to sense and detect the position information between the hoisting tool body and the corner casting, and the position information is fed back to the control system in the form of an electrical signal. When the control system determines that the position between the hoisting tool body and the corner casting is wrong after analysis, the alarm is controlled to sound an alarm; when the control system determines that the position between the hoisting tool body and the corner casting is correct after analysis, the control system determines whether the orientation of the container door is correct based on the detection signal of the first sensor. If the orientation of the container door is wrong, the alarm is controlled to sound an alarm; if the orientation of the container door is correct, the drive is controlled to drive the lock to lock the corner casting. This design ensures the safety and reliability of the container during the hoisting process, and also realizes the fully automatic process control of hoisting containers.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] The present application detects the orientation of the container door by providing a first detection rod at both ends of the hoist body corresponding to the length direction of the container, and a first sensor transmission-connected to the first detection rod. The method has the advantages of simple and direct structure, accurate and reliable detection, and can easily and accurately detect the orientation of the container door. At the same time, the automatic sensing of the first sensor is utilized to convert the corresponding state of the first detection rod into an electrical signal, which is conducive to realizing fully automatic process control of hoisting containers.

[0028] The present application drives the driven block through a driving block and a driving inclined plane arranged on the driving block, and then detects the driven block through the first sensor. The driving inclined plane can be used to decompose the force of the spreader body and the container on the first detection rod into two forces that push the driving block to move and the driven block to move, thereby reducing the actual force acting on the first sensor. This can not only reduce the load requirement for the first sensor, but also help to increase the service life of the first sensor.

[0029] The present application provides a second detection rod and a second sensor, which can simply and directly determine the position information between the hanger body and the corner casting. On the one hand, it can ensure the reliable connection between the lock and the corner casting. On the other hand, it can also avoid the first sensor from making a misjudgment due to the position error between the hanger body and the corner casting, further ensuring the reliability of detecting the orientation of the box door.

[0030] The present application uses a control system to determine the container drop status and container door orientation based on the detection signals of the first sensor and the second sensor, and then controls the alarm to sound an alarm or automatically execute the next operation, which not only ensures the safety and reliability of the container during the lifting process, but also realizes fully automatic process control of the container lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structural status of Example 1 of the present application.

[0032] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of Part I.

[0033] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of Part II.

[0034] Figure 4 It is a schematic diagram of the overall structural status of Example 2 of the present application.

[0035] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of Part III.

[0036] Figure 6 yes Figure 5 Schematic diagram of the AA section state.

[0037] Figure 7 It is a schematic diagram of the overall structural status of Example 3 of the present application.

[0038] Figure 8 yes Figure 7 An enlarged schematic diagram of the structure of Part V.

[0039] Fig. 9 yes Figure 8 Schematic diagram of the BB section state.

[0040] Fig.10 This is a schematic diagram of the installation structure status of Example 4 of the present application.

[0041] Explanation of the reference numerals: 100, container; 101, first side panel; 102, second side panel; 103, container door; 104, corner casting; 105, lock hole; 200, sling body; 201, lock; 202, first detection rod; 203, first sensor; 204, adjustment thread; 205, top pressure head; 206, nut; 207, first spring; 208, drive block; 209, drive ramp; 210, driven block; 211, second spring; 212, driven ramp; 213, roller; 214, second detection rod; 215, second sensor; 300, drive assembly; 301, transmission arm; 302, drive member; 219, limit block; 220, guide wheel; 221, third spring. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-10 This application is described in further detail.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing 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 present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The embodiment of the present application discloses a container spreader for detecting the orientation of a container door.

[0046] Please refer to Figure 1 and Figure 2First of all, it should be noted that in the prior art, most containers 100 have the same structural features: the container 100 has a first side panel 101 and a second side panel 102 distributed along its length direction, a container door 103 is arranged on the first side panel 101, corner castings 104 are respectively arranged at the four corners above the container 100, and locking holes 105 for connecting the slings are opened on the corner castings 104. The corner castings 104 are located at the two ends of the container 100 along its length direction, and the outer ends of the two corner castings 104 close to the second side panel 102 are flush with the second side panel 102. In order to facilitate the installation of the container door 103, the outer ends of the two corner castings 104 close to the first side panel 101 are extended out of the first side panel 101.

[0047] Example 1

[0048] Please refer to Figure 1 and Figure 2 In one embodiment of the present application, a container hoist for detecting the orientation of a container door includes a hoist body 200, and a lock 201 is rotatably connected to the position of the hoist body 200 corresponding to the corner casting 104. The structural shapes of the lock 201 and the lock hole 105 are both set to be long strips. In this way, after the lock 201 is inserted into the lock hole 105, it only needs to control the lock 201 to rotate to an appropriate angle to quickly and conveniently complete the locking between the hoist body 200 and the container 100.

[0049] Please refer to Figure 2 In a specific embodiment of the present application, a transmission arm 301 is fixedly installed at one end of the lock head 201 located inside the sling body 200, and a driving member 302 is hingedly connected to the other end of the transmission arm 301. The transmission arm 301 and the driving member 302 constitute a driving assembly 300 to control the lock head 201 to swing at an appropriate angle. The driving member 302 is configured to rotate an oil cylinder installed inside the sling body 200. The oil cylinder is connected to a hydraulic system. The extension and retraction of the oil cylinder can be controlled by controlling the hydraulic system. When the oil cylinder is extended and retracted, it can drive the lock head 201 to swing at an appropriate angle.

[0050] It is understandable that in other embodiments of the present application, the driving member 302 may be configured as an electric telescopic rod, a cylinder or other driving structure capable of outputting linear motion, so as to achieve the purpose of driving the lock head 201 to swing at an appropriate angle. The driving member 302 can drive the transmission arm 301 to swing, and the transmission arm 301 will cause the lock head 201 to rotate to a corresponding angle when swinging, so that the lock head 201 can be locked on the corner casting 104, thereby improving the degree of automation of the container 100 during the lifting process.

[0051] Please refer to Figure 1 and Figure 3In one embodiment of the present application, first detection rods 202 are slidably connected to the two ends of the sling body 200 corresponding to the length direction of the container 100, and the distance between the two first detection rods 202 is greater than the distance between the first side plate 101 and the second side plate 102. A first sensor 203 is installed on the sling body 200 corresponding to the first detection rods 202.

[0052] Since the outer ends of the two corner castings 104 close to the second side plate 102 are flush with the second side plate 102, and the outer ends of the two corner castings 104 close to the first side plate 101 extend out of the first side plate 101, when the lock 201 set on the hanger body 200 is aligned and close to the corner castings 104, the first detection rod 202 close to the first side plate 101 will be offset from the top surface of the first side plate 101 and be in a suspended state, and the first detection rod 202 close to the second side plate 102 will be pressed against the top surface of the second side plate 102 and be in abutment state, thereby pushing the first detection rod 202 to move upward, and the corresponding first sensor 203 will sense the position change of the corresponding first detection rod 202. If the first detection rod 202 should be in a suspended state but is actually in abutment state, or should be in abutment state but is actually in a suspended state, it means that the orientation of the box door 103 is wrong.

[0053] Please refer to Figure 1 and Figure 3 In one embodiment of the present application, the two first detection rods 202 are both arranged vertically, and an adjusting thread 204 is provided on the outer side of the upper end of the first detection rod 202, and a top pressure head 205 is fixedly connected to the lower end of the first detection rod 202. The adjusting thread 204 can be used to adjust the extension length of the first detection rod 202 by rotating the first detection rod 202, thereby ensuring the stability and reliability of the first detection rod 202 during the abutment process; and the top pressure head 205 can be used to protect the lower end of the first detection rod 202, so as to prevent the first detection rod 202 from colliding and deforming with the container 100 during the abutment process, further improving the stability and reliability of the first detection rod 202 during the abutment process.

[0054] Please refer to Figure 1 and Figure 3In one embodiment of the present application, the upper end of the first detection rod 202 is threadedly connected with a nut 206, the first sensor 203 is fixedly mounted on the sling body 200, and the sensing end of the first sensor 203 faces the first detection rod 202. The outer side of the first detection rod 202 is sleeved with a first spring 207, one end of the first spring 207 abuts against the first sensor 203, and the other end of the first spring 207 abuts against the sling body 200. The extension length of the first detection rod 202 can be adjusted by using the nut 206. At the same time, the first spring 207 is arranged between the first sensor 203 and the sling body 200. On the one hand, it can buffer the impact between the first sensor 203 and the sling body 200, thereby protecting the first sensor 203. On the other hand, the first spring 207 can also push the first detection rod 202 to reset after the lifting is completed, so as to facilitate the next lifting use.

[0055] Please refer to Figure 1 and Figure 3 In one embodiment of the present application, the second detection rod 214 is slidably connected to the position near the lock 201 on the hanger body 200, and the end of the second detection rod 214 away from the hanger body 200 abuts against the corner casting 104. The second sensor 215 is installed on the hanger body 200 corresponding to the second detection rod 214. The second detection rod 214 and the second sensor 215 can be used to simply and directly determine the position information between the hanger body 200 and the corner casting 104, so as to determine the box drop state. On the one hand, it can ensure that the connection between the lock 201 and the corner casting 104 is reliable, and on the other hand, it can also avoid the first sensor 203 from misjudging due to the position error between the hanger body 200 and the corner casting 104, further ensuring the reliability of detecting the position of the box door 103.

[0056] In one embodiment of the present application, the driving member 302, the second sensor 215, and the first sensor 203 are all electrically connected to the same control system, and the control system is electrically connected to an alarm. During the working process, the control system and the alarm are used, and the control system can determine the state of the container drop and the orientation of the container door according to the detection signals of the first sensor 203 and the second sensor 215, and automatically control the alarm to sound an alarm or automatically perform the next operation according to the state of the container drop or the orientation of the container door, so as to ensure the safety and reliability of the container 100 during the lifting process, and also realize the full automatic process control of the lifting container 100.

[0057] In a specific implementation of the present application, the second sensor 215 and the first sensor 203 are both Hall position sensors, which have the advantages of simple structure, high accuracy, and fast dynamic response.

[0058] It is understandable that in other embodiments of the present application, the second sensor 215 and the first sensor 203 may also be electrical components such as travel switches and contact switches that can convert the state of being pressed into an electrical signal.

[0059] Example 2

[0060] Please refer to Figure 4 , Figure 5 and Figure 6 In one embodiment of the present application, the difference from Example 1 lies in that a driving block 208 is threadedly connected to the upper end of the first detection rod 202, a driving inclined surface 209 is provided at the end of the driving block 208 away from the first detection rod 202, a driven block 210 abutting against the driving inclined surface 209 is slidably connected to the sling body 200, a first sensor 203 is fixedly mounted on the outside of the end of the driven block 210 away from the driving inclined surface 209, and a second spring 211 is abuttingly connected between the first sensor 203 and the driven block 210. The driving inclined surface 209 arranged on the first detection rod 202 can drive the driven block 210 to move, and then drive the second spring 211 to press the first sensor 203. The driving inclined surface 209 can decompose the force of the sling body 200 and the container 100 on the first detection rod 202 into two forces, one pushing the driving block 208 to move and the other pushing the driven block 210 to move, thereby reducing the actual force acting on the first sensor 203. This can not only reduce the load requirement for the first sensor 203, but also help to increase the service life of the first sensor 203.

[0061] Please refer to Figure 6 In one embodiment of the present application, the angle α between the driving inclined surface 209 and the sliding direction of the driven block 210 satisfies: 45°≤α<65°. Setting the angle α between the driving inclined surface 209 and the sliding direction of the driven block 210 to: 45°≤α<65° can ensure the reliability of the driving block 208 pushing the driven block 210 to move, and can ensure that the first sensor 203 can reliably sense the movement of the driven block 210, thereby ensuring the stability and reliability of the first sensor 203 during operation.

[0062] Please refer to Figure 6 In one embodiment of the present application, the end of the driven block 210 away from the first sensor 203 is set as a driven inclined surface 212 corresponding to the driving inclined surface 209. The friction transmission between the driving inclined surface 209 and the driven inclined surface 212 has the advantages of simple structure, strong bearing capacity and easy maintenance.

[0063] Example 3

[0064] Please refer to Figure 7 , Figure 8 and Fig. 9 In one embodiment of the present application, the difference from Example 2 is that the end of the driven block 210 away from the first sensor 203 is rotatably connected to the driving inclined surface 209 with a roller 213. The sliding friction between the driving block 208 and the driven block 210 is converted into rolling friction by the roller 213, which can reduce the friction coefficient, reduce energy loss, and enable the driving block 208 to push the driven block 210 to move more labor-savingly and smoothly; and also increase the service life of the driving inclined surface 209 on the driving block 208.

[0065] Example 4

[0066] Please refer to Figure 1 and Fig.10 In one embodiment of the present application, the difference from Example 1 is that the first detection rod 202 is respectively hingedly connected to the first side plate 101 and the second side plate 102 at the two ends of the container 100 on the spreader body 200, and the first sensor 203 is installed on the spreader body 200 corresponding to the first detection rod 202. A limit block 219 is fixedly installed on the outer side of the upper end of the spreader body 200 corresponding to the first detection rod 202, and a guide wheel 220 is rotatably connected to the lower end of the first detection rod 202. A third spring 221 is connected between the first detection rod 202 and the limit block 219, one end of the third spring 221 is fixedly connected to the limit block 219, and the other end of the third spring 221 is fixedly connected to the first detection rod 202.

[0067] During use, the guide wheel 220 at the lower end of the first detection rod 202 is used to roll against the top of the container to drive the first detection rod 202 to swing, and then the first sensor 203 senses the swinging state of the first detection rod 202 to detect the orientation of the door 103. This not only has the advantages of simple and direct structure and accurate and reliable detection, but also the swinging of the first detection rod 202 can prevent the external environment from affecting the movement of the first detection rod 202, thereby ensuring the stability and reliability of the first detection rod 202 during operation.

[0068] The implementation principle of a container spreader for detecting the position of a container door in the embodiment of the present application is as follows:

[0069] When the lock 201 provided on the sling body 200 is aligned with the corner casting 104 and the sling continues to be lowered, the lock 201 will be inserted into the lock hole 105 on the corner casting 104 at the top of the container 100, and at the same time the second sensor 215 is compressed by the container 100, one first sensor 203 is compressed by the container, and the other first sensor 203 remains suspended.

[0070] During the lifting operation of the container 100, the second sensor 215 is first used to sense and detect the position information between the lifting device body 200 and the corner casting 104, and the information is fed back to the control system in the form of an electrical signal. When the control system determines through analysis that the position between the lifting device body 200 and the corner casting 104 is wrong, the control device is controlled to sound an alarm so that the staff can intervene in time to deal with it; when the control system determines through analysis that the position between the lifting device body 200 and the corner casting 104 is correct, the control system can automatically analyze the detection signal of the first sensor 203 according to the program setting to determine whether the orientation of the box door 103 is correct. If the orientation of the box door 103 is wrong, the control device is controlled to sound an alarm so that the staff can intervene in time to deal with it; if the orientation of the box door 103 is correct, the drive member 302 is continued to be controlled to drive the lock 201 to lock the corner casting 104 to complete the lifting preparation.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A container spreader for detecting the position of a container door, characterized in that: The invention comprises a sling body (200), a lock head (201) for connecting to a corner casting (104) of a container being rotatably connected to the sling body (200), a driving assembly (300) for driving the lock head (201) to rotate being provided on the sling body (200), first detection rods (202) being slidably connected to the positions of the first side plate (101) and the second side plate (102) at the two ends of the container (100) on the sling body (200), respectively, the distance between the first detection rods (202) being greater than the distance between the first side plate (101) and the second side plate (102) of the container, a first sensor (203) being installed on the sling body (200) corresponding to the first detection rod (202), an adjusting thread (204) being provided on the outer side of the upper end of the first detection rod (202), and a top pressure head (205) being fixedly connected to the lower end of the first detection rod (202).

2. The container spreader for detecting the door position according to claim 1, characterized in that: The upper end of the first detection rod (202) is threadedly connected with a nut (206), and the first sensor (203) is fixedly mounted on the sling body (200). The sensing end of the first sensor (203) faces the first detection rod (202). The outer side surface of the first detection rod (202) is sleeved with a first spring (207), one end of the first spring (207) abuts against the top pressure head (205), and the other end of the first spring (207) abuts against the sling body (200).

3. The container spreader for detecting the door position according to claim 1, characterized in that: The upper end of the first detection rod (202) is threadedly connected to a driving block (208); an end of the driving block (208) away from the first detection rod (202) is provided with a driving inclined surface (209); a driven block (210) is slidably connected to the sling body (200) and abutted against the driving inclined surface (209); the sensing end of the first sensor (203) faces the driven block (210); and a second spring (211) is abutted against the driven block (210) and the sling body (200).

4. The container spreader for detecting the door position according to claim 3, characterized in that: One end of the driven block (210) away from the first sensor (203) is arranged as a driven inclined surface (212) corresponding to the driving inclined surface (209).

5. The container spreader for detecting the door position according to claim 3, characterized in that: One end of the driven block (210) away from the first sensor (203) is rotatably connected to a roller (213) corresponding to the driving inclined surface (209).

6. A container spreader for detecting the position of a container door, characterized in that: The invention comprises a sling body (200), a lock (201) for connecting to a corner casting (104) of a container being rotatably connected to the sling body (200), a driving assembly (300) for driving the lock (201) to rotate being provided on the sling body (200), a first detection rod (202) being hingedly connected to the first side plate (101) and the second side plate (102) at the two ends of the container (100) on the sling body (200), a first sensor (203) being installed on the sling body (200) corresponding to the first detection rod (202), a limit block (219) being fixedly installed on the outer side of the upper end of the sling body (200) corresponding to the first detection rod (202), and a guide wheel (220) being rotatably connected to the lower end of the first detection rod (202).

7. The container spreader for detecting the door position according to claim 6, characterized in that: A third spring (221) is connected between the first detection rod (202) and the limit block (219); one end of the third spring (221) is fixedly connected to the limit block (219), and the other end of the third spring (221) is fixedly connected to the first detection rod (202).

8. The container spreader for detecting the door position according to any one of claims 1 to 7, characterized in that: A second detection rod (214) is slidably connected to a position on the hanger body (200) close to the lock head (201); one end of the second detection rod (214) away from the hanger body (200) abuts against the corner casting (104); and a second sensor (215) is installed on the hanger body (200) corresponding to the second detection rod (214).

9. The container spreader for detecting the door position according to claim 8, characterized in that: The driving assembly (300) comprises a transmission arm (301), one end of the transmission arm (301) being fixedly connected to an end of the lock head (201) located inside the hanger body (200), and the other end of the transmission arm (301) being hingedly connected to a driving member (302).

10. The container spreader for detecting the position of container door according to claim 9, characterized in that: The driving element (302), the second sensor (215), and the first sensor (203) are all electrically connected to the same control system, and the control system is electrically connected to an alarm.

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