A container lifting system for special lifting processes

Abstract

The present invention discloses a container lifting system for special lifting processes, including a rotating sling, the rotating sling including a rotating upper frame and a rotating lower frame, the rotating upper frame and the rotating lower frame are connected through a rotating wheel axle wheel disc, a driving oil motor is arranged on the outer side of the rotating wheel axle wheel disc, the rotating wheel axle wheel disc is fixed to the rotating upper frame, the driving oil motor is fixed to the rotating lower frame, the driving oil motor can make the rotating wheel axle wheel disc rotate along the center of a circle through gear meshing, thereby driving the rotating lower frame and the rotating upper frame to rotate, thereby completing the function of the rotating sling, the rotating lower frame is provided with an independent hydraulic power unit, including a hydraulic oil tank and a hydraulic oil pump motor, the hydraulic oil tank and the hydraulic oil pump motor are arranged separately, and the loading and balance of the rotating lower frame are optimized. The present invention can better meet the requirements.

Description

Technical Field

[0001] The invention relates to the technical field of container hoisting systems, and in particular to a container hoisting system for special hoisting processes. Background Art

[0002] With the large-scale promotion and popularization of container transportation, the shipping market has become increasingly dependent on container transportation. In addition to bulk conventional cargo that relies on conventional containers for loading and unloading, more and more special cargo is also transported using special containers. Special cargo can be summarized into the following types: 1. Overweight cargo. The maximum weight of cargo that can be unloaded by conventional container cranes can reach 70 tons; 2. Cargo size is oversized. Most oversized cargo has size specificity and is not a conventional container type. Some are difficult to load and unload using conventional slings and require hooks; 3. Hooked cargo can meet the special lifting points for loading and unloading, and has cargo size and weight specificity. Its lifting form has special requirements and also special requirements for stability; 4. In many cases, after loading and unloading, the cargo needs to be rotated to a certain extent, and the maximum degree of rotation must be 90° for unloading.

[0003] Most of the above-mentioned cargoes are oversized and overweight. During the loading and unloading process, some of them also require tilting on the dock side to facilitate unloading onto trailers or special transport equipment. Some even require sufficient stability during the loading and unloading process to ensure that the cargoes are safe and reliable.

[0004] For container terminals, since there are no special crane equipment for loading and unloading special cargoes, most loading and unloading processes use conventional container cranes, which requires container lifting equipment to meet the loading and unloading of special cargoes according to the requirements of the cargo types. Summary of the invention

[0005] The purpose of the present invention is to address the technical defects in the prior art and to provide a container lifting system that can cope with special lifting processes. The system can utilize container lifting equipment to carry out handling and loading and unloading of special goods, meet the needs of over-limit size, over-limit weight, and rotate goods, and has multiple combined lifting point modes.

[0006] The technical solution adopted to achieve the purpose of the present invention is:

[0007] A container lifting system for special lifting processes, comprising:

[0008] A rotating hoist, which includes a rotating upper frame and a rotating lower frame, wherein the rotating upper frame and the rotating lower frame are connected via a rotating wheel axle disc, a driving oil motor is arranged on the outer side of the rotating wheel axle disc, the rotating wheel axle disc is fixed to the rotating upper frame, and the driving oil motor is fixed to the rotating lower frame, the driving oil motor can make the rotating wheel axle disc rotate along the center of a circle through gear meshing, thereby driving the rotating lower frame and the rotating upper frame to rotate, thereby completing the function of the rotating hoist, an independent hydraulic power unit is arranged on the rotating lower frame, including a hydraulic oil tank and a hydraulic oil pump motor, the hydraulic oil tank and the hydraulic oil pump motor are arranged separately, so as to optimize the loading and balancing of the rotating lower frame.

[0009] Preferably, the hydraulic oil tank is equipped with an oil filling hole, a hydraulic breathing hole, an oil level observation hole and a temperature detector to ensure stable operation of the overall hydraulic system.

[0010] Preferably, the rotating upper frame is equipped with an axle pin type fixing hole; the rotating lower frame is equipped with an axle pin type fixing pin, and the axle pin type fixing pin is equipped with an anti-falling device to avoid slipping and falling.

[0011] Preferably, it includes a lifting sling, which can be used in conjunction with the rotating sling or independently. The main body is a frame structure, which is formed by welding a main beam, an end beam and a sub-beam. There are two main beams and two end beams. The sub-beams are welded between the two main beams and arranged at intervals. Two groups of hanging points with hooks and wire rope ears are welded on the outside of each main beam, with a total of eight hanging points; two symmetrically arranged hanging plates are welded to the upper end and the inner end of each end beam, with a total of four hanging plates, an upper hanging point is formed at the upper end of each hanging plate, and a lower hanging point is formed at the lower end. Each end beam is provided with a locking accessory, which includes an upper locking head and a lower locking head. Four main beam upper hanging points are arranged in a rectangular shape on the main beam at the upper end of the main beam.

[0012] Preferably, the lock accessories include a rotary lock, and the rotary lock includes a rotary lock crank. The bolt column on the rotary crank is connected to the pull rod. There is a handle at the end of the pull rod. The handle is moved linearly along the connecting rod bracket arranged on the outside of the lock box, thereby driving the rotary crank to rotate 90° along the center of the rotary lock to achieve opening and closing operations; wherein, two stop pins are arranged at intervals on the pull rod, and after the handle is pulled to the unlocking or locking position, the stop pins will respectively prevent the pull rod from continuing to be pulled.

[0013] Preferably, a mechanical interlocking protection device is provided on the outer side of the rotary lock to prevent the rotary lock from rotating accidentally and causing danger. The push pin of the mechanical interlocking protection device includes a push pin rod, a spring, and a push pin protrusion mechanical interlocking mechanism. The push pin rod vertically passes through the inner lining plate of the lock box, and a spring is arranged between the lower end surface of the inner lining plate of the lock box and the limit block of the push pin. Through the action of the spring and the inner lining plate of the lock box, the push pin rod can be kept in a downward protruding state. The circular push pin protrusion mechanical interlocking mechanism is fixed to the upper end of the push pin rod by bolt connection, which just fits with the rotary lock crank and effectively blocks the rotation of the rotary lock crank and the connected rotary lock; when the spring is compressed, the push pin protrusion mechanical interlocking mechanism is lifted up, and the rotary crank can rotate.

[0014] Preferably, a notch that matches the mechanical interlocking mechanism of the ejector pin protrusion is provided at a position corresponding to the open / closed locking state on the rotary lock crank, so that the ejector pin can fix the rotary lock crank under the action of the spring and effectively inhibit its rotation.

[0015] Preferably, two locking pin holes arranged at intervals are provided on the pull rod along its axial direction. When the pull rod is in a corresponding state and one locking pin hole corresponds to the locking hole on the connecting rod bracket, the corresponding locking pin is inserted and cooperates with the connecting bracket to lock the handle.

[0016] Preferably, the sling is equipped with a corresponding base support, which is composed of a main beam, a longitudinal beam, an angle beam support plate and a forklift socket spliced ​​and welded to form a frame structure. The angle beam support plate is used for stress decomposition and buffering at the junction of the longitudinal beam and the main beam. The forklift socket is arranged between the two main beams. A plurality of guide plates are arranged on the periphery of the base support so that the sling can be smoothly inserted into the base support from the top of the base support. The upper end of the longitudinal beam is provided with a lock fitting for engaging with the lower lock head of the sling. After engagement, the lock is opened and closed by the sling lock mechanism so that the base support and the sling can be locked.

[0017] Preferably, the guide plates are chamfered, and one is arranged at each of the two ends and one side in the axial direction of each longitudinal beam.

[0018] The container lifting system for special lifting technology proposed in the present invention is particularly related to a lifting system for special types of container cargo, including oversized and overweight cargo types, using shore container crane lifting equipment, which has functions such as rotation and angle adjustment, and has the characteristics of multiple loads at different lifting points, and also uses multiple lifting modes to facilitate the installation and disassembly of the hanger. At the same time, the sling has mechanical interlocking and manual locking protection to improve the stability of the hoisted cargo and reduce the error rate of misoperation and the accident of falling containers caused by misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of a rotating hanger according to an embodiment of the present invention;

[0020] Figure 2 It is a top view schematic diagram of a rotating hanger according to an embodiment of the present invention;

[0021] Figure 3 It is a side view schematic diagram of a rotating hanger according to an embodiment of the present invention;

[0022] Figure 4 It is a top view schematic diagram of a rotating hanger according to an embodiment of the present invention;

[0023] Figure 5 It is a front view schematic diagram of a sling according to an embodiment of the present invention;

[0024] Figure 6 It is a top view schematic diagram of a sling according to an embodiment of the present invention;

[0025] Figure 7 It is a side view schematic diagram of a sling according to an embodiment of the present invention;

[0026] Figure 8 for Figure 5 Schematic diagram of the middle line KK;

[0027] Fig. 9 A cross-sectional schematic diagram of an opening and closing locking device of a sling according to an embodiment of the present invention;

[0028] Fig.10 It is another cross-sectional schematic diagram of the opening and closing locking device of the sling according to the embodiment of the present invention;

[0029] Fig.11 Schematic diagram of the opening and closing states of the opening and closing locking device of the sling according to the embodiment of the present invention;

[0030] Fig.12 A top view of a sling with a matching bottom bracket according to an embodiment of the present invention;

[0031] Fig.13 The figure is a front view of a sling with a matching bottom bracket according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The rotating spreader is a common loading and unloading equipment in the lifting equipment of the container terminal. Conventional rotating spreaders require the use of a spreader hanging below. The rotation of the rotating spreader is mainly realized by the hydraulic system. The rotating spreader does not have an independent power source and relies on the spreader below to provide it. The spreader is equipped with a hydraulic output pipeline interface that cooperates with the rotating spreader. However, after the cooperation, due to the cooperation of the conventional spreader, the weight of the rotating spreader and the spreader is increased, thereby reducing the overall load. Under normal circumstances, the dead weight of the conventional spreader is about 13 tons, and the maximum load of the rotating spreader under the spreader is about 30 tons, which is difficult to meet the loading and unloading needs of oversized goods.

[0034] like Figure 1-Figure 13 As shown, the container lifting system of the embodiment of the present invention is to add an independent hydraulic pump system and the same connection interface as the conventional lifting device to the existing rotating lifting device, so as to facilitate the connection between the rotating lifting device and the lifting device vertical cable, and provide power supply and control signal to the rotating lifting device hydraulic system through the lifting device vertical cable. Then the rotating lifting device may increase by about 1 ton, and the rotating lifting device can work independently without the cooperation of the conventional lifting device. Overall, it is equivalent to adding more than ten tons of maximum load under the rotating lifting device, which basically meets the weight requirements of some overweight goods, and can provide a rotating function. At the same time, it can also reduce the replacement process of the rotating lifting device and reduce the cumbersome process of disassembling and assembling the lifting device.

[0035] Specifically, the rotary lifting device of the present invention is as follows Figure 1 As shown, it is composed of a rotating upper frame A1 through a rotating axle disc A3 and a rotating lower frame A2. The driving oil motor A4 can rotate the rotating axle disc along the center of a circle through gear meshing along the rotating axle disc A3. The rotating axle disc A3 is fixed to the rotating upper frame A1, and the driving oil motor A4 is fixed to the rotating lower frame A2. Under the drive of the hydraulic system, the driving oil motor A4 rotates and makes the driving oil motor A4 itself move in a circle along the rotating axle disc A3, thereby causing the rotating lower frame A2 and the rotating upper frame A1 to rotate, thereby completing the function of the rotating sling.

[0036] This system adds an independent hydraulic power unit to the rotating lower frame A2, namely the hydraulic oil tank A7 and the hydraulic oil pump motor A8. In order to balance the force of the rotating lower frame A2 and protect the rotating wheel axle wheel A3, the hydraulic oil tank and A7 and the hydraulic oil pump motor A8 system are arranged separately to optimize the loading and balance of the rotating lower frame A2. The hydraulic oil tank A7 is equipped with an oil filling hole and a hydraulic breathing hole as well as an oil level observation hole and a temperature detector to ensure the stable operation of the overall hydraulic system. At the same time, considering the stability of the system, an oil pressure protection system is specially set up. The added parts all have fixed feet and are welded and fixed to the rotating lower frame A2

[0037] Furthermore, the rotating upper frame A1 is equipped with an axle pin type fixing hole A5; the rotating lower frame A2 is equipped with an axle pin type fixing pin A6, and the fixing pin is equipped with an anti-falling device to avoid slipping and falling.

[0038] The embodiment of the present invention transforms the power source of the original rotating hanger so that it can be used without using the hanger hydraulic system as the power output mode, thereby achieving lightweight, thereby increasing the load under the rotating hanger carried by the wire rope, and realizing its rotation requirements under overweight.

[0039] The embodiment of the present invention also provides a sling that can be used with the rotating sling, which is a sling that can be used with the container rotating sling and has multiple uses. It meets the size of ISO 20ft container and is composed of a main beam B1, an end beam B2, a secondary beam B3, evenly and symmetrically distributed lifting points, locking accessories, a fixed axle pin connected to the upper sling, a manual opening and closing locking device B11, etc.

[0040] In the embodiment of the present invention, the sling has three kinds of lifting combination forms and multiple lifting load lifting points. For example, the sling can meet the three connection forms of A, B and C with the lifting equipment. Form A is directly connected to the upper frame of the lifting equipment, and the rotating sling can also meet the connection. Form B is a conventional lifting lug lifting point form, and form C is a container lock accessory that meets the standardized container 20ft size.

[0041] In the embodiment of the present invention, the sling comprises a plurality of sling points, mainly including:

[0042] The mounting modes are divided into: locking accessories B6, i.e. C mode; lifting point and lifting ring B4, i.e. B lifting point mode; lifting ear device B8, i.e. D lifting point mode; the dismounting modes are divided into: lower locking head B7, i.e. D mode; lower hanging point B5, i.e. E, F, G modes.

[0043] The loads of different lifting points and the load requirements of upper and lower lifting points are as follows:

[0044] A lifting point can be directly combined with rotating lifting device and equipment lifting device, and its maximum load can reach 80t.

[0045] B lifting point is the upper lifting point, which can be used with wire rope and the maximum load can reach 80t.

[0046] The C lifting point is subject to equipment load requirements and the maximum load is 40t.

[0047] The D lifting point is in locking mode, with a maximum load of 80t.

[0048] E, F and G lifting points are all hook wire rope lifting points with a maximum load of 80t.

[0049] Regarding the load conditions of the various lifting points of the slings, it is necessary to consider the minimum load of the combination, the coordination of the lifting equipment, and the load conditions of the lifting equipment.

[0050] The sling of the embodiment of the present invention has at least 4 kinds of lifting point settings, and different lifting points have different sling loads; at the same time, the connection mode between the sling and the equipment is also divided into 3 modes, including combination using conventional container sling lock accessories, combination of the sling and the sling rack, and direct coupling by hanging the internal lifting lugs through steel wire ropes, etc. Different combination modes have different sling load modes under the sling, ranging from 40 tons to 80 tons, which are all greater than the conventional load weight under conventional container cranes.

[0051] Since the sling has different lifting point combination modes, it also increases the diversity of the goods hoisted by the sling and the adequacy of the size, which can meet the loading and unloading process requirements of oversized goods to the greatest extent.

[0052] The manual opening and closing locking device of the embodiment of the present invention meets the requirements for lifting a 20ft standard container under a sling and has a maximum load of 60 tons. The lock is opened and closed by manually pulling the connecting rod to drive the rotary lock to rotate. At the same time, in order to prevent the lock head from rotating during lifting and transportation and causing danger, two fixed positions are set at the pull rod handle, namely the unlocking position and the locking position, which are locked and fixed by a lock pin.

[0053] In order to further ensure the safe and reliable operation of the lock, a fixed pin mechanism is designed in the opening and closing locking device, which has the characteristics of mechanical interlocking. The fixed pin limits the rotation of the lock through a specific protrusion device, thereby realizing the function of locking the lock. Only when the lock and the hoisting object are completely solid and the fixed pin is lifted up by the deadweight of the sling, can the lock be rotated and manual opening and closing operations can be performed.

[0054] The manual opening and closing locking device of the embodiment of the present invention comprises a rotary lock mechanism disposed in a lock box C1, and the rotary lock mechanism comprises a rotary lock head C4, a rotary lock sheath C5, a lower sheath C6, a butterfly sheath group C7, a rotary lock crank C10 and a rotary lock cap C8. From top to bottom, the lock head mechanism is a rotary lock cap C8, a rotary lock crank C10, a butterfly sheath group C7 connected with the lock box inner lining plate C2, and the lower sheath C6, the rotary lock sheath C5, and the rotary lock head C4 pass through them, and each sheath structure protects and lubricates the rotary lock head C4.

[0055] Among them, the rotary lock sleeve C5 is a heterogeneous casting structure combined with the lower sleeve C6 and connected to the lock head. There is a certain amount of shaking in the lock box to meet the corresponding margin of the lock head in the box. The lower sleeve C6 and the rotary lock sleeve C5 match the rotary lock boss structure under the action of gravity, and the boss structure ensures that the rotary lock sleeve C5 and the lower sleeve C6 stably fit the rotary lock head C4. The butterfly sleeve group C7 is in the form of two sets of upper and lower sleeves, which match each other. Due to the spherical surface design on the fitting surface, the shaking margin and shaking space of the overall structure of the rotary lock can be met. The lock box lining plate C2 can be fixedly matched with the butterfly sleeve group C7, which plays a supporting role in weighing the rotary lock.

[0056] The rotary lock cap C8 is tightly connected to the rotary lock head C4 through a bolt structure, and a locking pin is provided at the top of the rotary lock cap C8 to prevent the bolt from loosening due to the rotation of the rotary lock head C4. The rotary lock cap C8 fastens the rotary lock crank C10 to the butterfly sleeve assembly C7, and the fixing key C9 ensures that the rotary lock crank C10 and the rotary lock head C4 fit tightly to prevent slipping. The rotary lock crank C10 is connected to the rotary lock head C4 through a bolt column, a pull rod C18, and a C15 handle to form a multi-link mechanical structure. The handle C15 moves linearly along the connecting rod bracket C19, thereby driving the rotary crank C10 to rotate along the center of the rotary lock head C4, realizing a 90° rotation of the rotary lock head C4. The rotary lock head C4 can achieve an opening and closing action when it rotates 90°. A cylindrical stop pin C16 is welded on the pull rod C18 to ensure that the handle C15 will not fall off due to excessive pushing or pulling, while ensuring that the rotation of the multi-link mechanism rotary lock mechanism C4 meets the 90° requirement.

[0057] Among them, after the rotary lock head C4 enters the cargo lock accessory below, the rotary lock head C4 is rotated 90° to make the boss of the rotary lock head C4 and the edge of the lock accessory hang up. The rotary lock head C4 transmits gravity to the butterfly sleeve group C7, the rotary lock crank C10, and the rotary lock cap C8 through mechanical connection, and forms pressure with the lock box lining plate C2 to jointly bear the weight of the rotary lock head C4 of the heavy object, thereby completing the lifting of the cargo.

[0058] The manual opening and closing locking device of the embodiment of the present invention is provided with a push pin mechanism, which is mainly used to prevent the rotary lock head C4 mechanism from rotating incorrectly and causing the box to fall or the hoisted object to fall off, forming a mechanical interlocking protection, so that the rotary lock head C4 is allowed to rotate only when it is completely aligned with the lower lock accessory and lifted up by the push pin of the new lifting sling.

[0059] The ejector pin mechanism is mainly composed of an ejector pin rod C11, a spring C13, an ejector pin protrusion mechanical interlocking mechanism C14, and bolts. The ejector pin rod C11 is kept in a downward protruding state by the action of the spring C13 and the lock box inner lining plate C2, and the upper circular ejector pin protrusion mechanical interlocking mechanism C14 is fixed by bolts to form a coincidence with the rotary lock crank C10, and effectively prevents the rotary lock crank C10 and the connected rotary lock head C4 from rotating. When the spring C13 is compressed, the ejector pin protrusion mechanical interlocking mechanism C14 is pushed up, and the rotary crank C10 rotates.

[0060] The manual opening and closing locking device of the embodiment of the present invention is provided with a mechanical protection device, which is mainly reflected in the mechanical interlocking of the top pin and the locking interlocking protection of the pulling handle. In the mechanical interlocking protection mode, a notch that matches the top pin is set at the position corresponding to the opening and closing lock state on the rotary lock crank C10, which just meets the requirements of the top pin rod C11 to fix the rotary lock crank C10 under the action of the spring C13, effectively inhibiting its rotation. The rotary lock crank C10 can only rotate freely after the top pin rod C11 is lifted. In the locking interlocking protection of the pulling handle, after the handle C15 is pulled to the unlocking or locking position, the stop pin C16 will respectively prevent the handle C15 from continuing to pull, and a locking pin C17 is set at this position. When the locking pin handle is inserted into the pin hole, the handle will not be able to be pulled, and the rotary lock head C4 will be locked, further inhibiting its rotation.

[0061] In the embodiment of the present invention, since the light hanger of the sling has no power source mechanism, a manual opening and closing locking device is designed and configured to be able to load and unload containers and cargo with container lock accessories. The sling of the embodiment of the present invention has an independent rotary lock mechanism, cooperates with a top pin structure, and has mechanical interlocking protection and manual opening and closing lock locking protection.

[0062] In the embodiment of the present invention, in order to facilitate the handling and movement of new slings and rotating slings, a sling base bracket (bottom bracket) is specially designed and manufactured. The base bracket is mainly composed of a lock fitting that matches the position of the sling lock, a rigid base, a guide plate, and a socket on the base that is specially used for forklift handling. The guide plate can ensure that the sling is smoothly placed on the base bracket, and the lock of the sling is smoothly fitted with the base lock fitting. The lock fitting is mainly used to protect the sling lock mechanism, and can ensure that the base and the sling are connected to each other through the opening and closing lock control of the sling, so as to prevent the sling from falling off during the handling of the base.

[0063] The bottom bracket of the embodiment of the present invention is convenient for forklift handling and has uniform force. The bottom bracket is equipped with a lock fitting that can be tightly fixed with the sling, and a guide plate mechanism that is convenient for the sling to be placed in position. It is mainly composed of a main beam D3, a longitudinal beam D4, a corner beam support plate D5 and a forklift socket D6, which are spliced ​​and welded. Considering the load-bearing and stress concentration, the corner beam support plate D5 is used for stress decomposition and buffering at the junction of the longitudinal beam D4 and the main beam D3. The overall structure is spliced ​​with profile square tubes. The forklift socket meets the requirements of 25-ton heavy-duty forklift handling and loading. In order to avoid the guide plate D1 from cutting personnel during operation, chamfering is performed in the design. The guide plate allows the new sling to be smoothly inserted into the bottom bracket structure, and is engaged with the lower lock head of the new sling through the lock fitting D2. After engagement, the bottom bracket is locked with the sling and the bottom bracket through the lower lock head B7 of the sling.

[0064] The container lifting system of the embodiment of the present invention can realize the lifting and unloading process of oversized and unconventional container cargo by using the cooperation of the rotating spreader and the sling. The rotating spreader and the sling have their own characteristics and can be used in combination or alone, which can meet the requirements of most unconventional container lifting processes.

[0065] The rotary sling of the embodiment of the present invention can be used alone to realize the rotation function, and is free from the constraint of relying on the lower sling to provide power for it, and needs to be used in conjunction with the lifting lug and hook. If conventional container lock accessories are required, it needs to be used in conjunction with the sling.

[0066] The new container sling according to the embodiment of the present invention has the characteristics of light weight, large load, and multiple lifting points. It can be directly connected to the container lifting equipment alone, and can also be connected to the rotating sling. It also has the characteristics of being connected to the conventional sling. It is easiest to connect with the conventional sling, which can enrich the multi-point lifting requirements of the conventional sling. If the load requirement is too large, it can be directly connected to the conventional crane; if rotation is required, it needs to be used in conjunction with the rotating sling. The new sling according to the embodiment of the present invention also meets the requirements of different lifting forms. It can be realized by directly hanging buckles, or the lifting needs of opening and closing the lock can be completed manually using lock accessories.

[0067] The lifting sling of the embodiment of the present invention is the most stable lifting sling that can meet the conventional standardized container operation, and can be used in conjunction with a rotating lifting sling or a new type of lifting sling to meet the lifting requirements of more types of goods. During the lifting process, according to the load description of different lifting points, composite calculations are performed to meet different lifting load requirements, and multiple loads are considered redundantly, within the load limit of the wire rope, and the minimum load is selected as the principle for multiple loads, so as to achieve the maximum safety and reliability characteristics. When necessary, the additional redundant protection factor of each load should be fully considered.

[0068] In short, the combination of different spreaders has greatly enriched the diverse lifting needs of container lifting, improved the adaptability of container terminals to freight types, and improved the core service level of container terminals.

[0069] The container lifting system of the embodiment of the present invention is a lifting system for special types of goods. The slings and the hanger are lightweighted to ensure that the crane can obtain a larger load. The hanger has sufficient lifting load and can meet a maximum load of at least 80 tons. The crane lifting equipment is modified to meet the hanger with a rotating function. Different lifting points are provided to improve the stability and specificity of the goods.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A container lifting system for special lifting processes includes a rotating sling, which includes a rotating upper frame and a rotating lower frame. The rotating upper frame and the rotating lower frame are connected through a rotating wheel axle disc. A driving oil motor is arranged on the outer side of the rotating wheel axle disc. The rotating wheel axle disc is fixed to the rotating upper frame, and the driving oil motor is fixed to the rotating lower frame. The driving oil motor can make the rotating wheel axle disc rotate along the center of a circle through gear meshing, thereby driving the rotating lower frame and the rotating upper frame to rotate, thereby completing the function of the rotating sling, characterized in that: The rotating lower frame is provided with an independent hydraulic power unit, including a hydraulic oil tank and a hydraulic oil pump motor. The hydraulic oil tank and the hydraulic oil pump motor are arranged separately to optimize the loading and balancing of the rotating lower frame; the hydraulic oil tank is equipped with an oil filling hole, a hydraulic breathing hole, an oil level observation hole and a temperature detector to ensure the stable operation of the overall hydraulic system; it includes a sling, which can be used in conjunction with the rotating sling or used independently. The main body is a frame structure, which is formed by welding a main beam, an end beam and a sub-beam. There are two beams for each, and the secondary beams are welded between the two main beams and arranged at intervals. Two groups of hanging points with hooks and wire rope ears are welded on the outer side of each main beam, with a total of eight hanging points; two symmetrically arranged hanging plates are welded on the upper end and the inner end of each end beam, with a total of four hanging plates, and an upper hanging point is formed at the upper end of each hanging plate and a lower hanging point is formed at the lower end. Each end beam is provided with a locking accessory, which includes an upper locking head and a lower locking head. Four main beam upper hanging points are provided at the upper end of the main beam, which are arranged in a rectangular shape on the main beam.

2. The container lifting system for special lifting technology according to claim 1 is characterized in that: The rotating upper frame is equipped with an axle pin type fixing hole; the rotating lower frame is equipped with an axle pin type fixing pin, and the axle pin type fixing pin is equipped with an anti-falling device to avoid slipping and falling.

3. The container lifting system for special lifting technology according to claim 1 is characterized in that: The lock accessories include a rotary lock, and the rotary lock includes a rotary lock crank. The bolt column on the rotary crank is connected to the pull rod. There is a handle at the end of the pull rod. The handle moves linearly along the connecting rod bracket arranged on the outside of the lock box, thereby driving the rotary crank to rotate 90° along the center of the rotary lock to achieve opening and closing operations; wherein, two stop pins are arranged at intervals on the pull rod. After the handle is pulled to the unlocking or locking position, the stop pins will respectively prevent the pull rod from continuing to be pulled.

4. The container lifting system for special lifting technology according to claim 3 is characterized in that: A mechanical interlocking protection device is arranged on the outside of the rotary lock to prevent the rotary lock from rotating accidentally and causing danger. The ejector pin of the mechanical interlocking protection device includes a ejector pin rod, a spring, and a ejector pin protrusion mechanical interlocking mechanism. The ejector pin rod vertically passes through the inner lining plate of the lock box. A spring is arranged between the lower end surface of the inner lining plate of the lock box and the limit block of the ejector pin. Through the action of the spring and the inner lining plate of the lock box, the ejector pin rod can be kept in a downward protruding state. The circular ejector pin protrusion mechanical interlocking mechanism is fixed to the upper end of the ejector pin rod by bolt connection, which just fits with the rotary lock crank and effectively blocks the rotation of the rotary lock crank and the connected rotary lock. When the spring is compressed, the ejector pin protrusion mechanical interlocking mechanism is lifted up, and the rotary crank can rotate.

5. The container lifting system for special lifting technology according to claim 4 is characterized in that: A notch that matches the mechanical interlocking mechanism of the ejector pin protrusion is provided at a position corresponding to the open / closed locking state on the rotary lock crank, so that the ejector pin can fix the rotary lock crank under the action of the spring and effectively inhibit its rotation.

6. The container lifting system for special lifting technology according to claim 4, characterized in that: Two locking pin holes are arranged at intervals on the pull rod along its axial direction. When the pull rod is in a corresponding state and one locking pin hole corresponds to the locking hole on the connecting rod bracket, the corresponding locking pin is inserted and cooperates with the connecting bracket to lock the handle.

7. The container lifting system for special lifting technology according to claim 4, characterized in that: The sling is equipped with a corresponding base, which is composed of a main beam, a longitudinal beam, an angle beam support plate and a forklift socket spliced ​​and welded to form a frame structure. The angle beam support plate is used for stress decomposition and buffering at the junction of the longitudinal beam and the main beam. The forklift socket is arranged between the two main beams. A plurality of guide plates are arranged on the periphery of the base, so that the sling can be smoothly inserted into the base from the top of the base. The upper end of the longitudinal beam is provided with a lock fitting for engaging with the lower lock head of the sling. After engagement, the lock is opened and closed by the sling lock mechanism so that the base and the sling can be locked.

8. The container lifting system for special lifting technology according to claim 7, characterized in that: The guide plates are chamfered, and one is arranged at each of the two ends and one side in the axial direction of each longitudinal beam.

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