Lifting appliance and crane

Abstract

The invention relates to the technical field of hydropower station hoisting equipment, and particularly discloses a lifting appliance and a crane, the lifting appliance comprises a hanging scaffold, a deviation rectifying assembly and a protection assembly, the axis of the hanging scaffold is arranged in the vertical direction, the deviation rectifying assembly comprises a driving part, ropes and a horizontal sensor, the upper ends of the multiple ropes are connected to the driving part, and the lower ends of the multiple ropes are connected to the protection assembly; the lower ends of the multiple ropes are connected to the upper end of the hanging scaffold and distributed on the hanging scaffold in the circumferential direction of the hanging scaffold at intervals, the driving piece can independently control each rope to be wound or released, the horizontal sensor is connected to the hanging scaffold and electrically connected with the driving piece, the protection assembly comprises a protection plate and an elastic piece, the protection plate is connected to the hanging scaffold, and the elastic piece is electrically connected with the protection plate. The upper end of the elastic piece is connected to the hanging scaffold, the lower end of the elastic piece is connected to the protection plate, and the protection plate can move on the hanging scaffold in the axis direction of the hanging scaffold so that the protection plate can have an unlocking position and a blocking position. Through the arrangement of the deviation rectifying assembly and the protection assembly, the functions of automatic leveling and protection of the lifting appliance are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment for hydropower stations, and in particular to a hoist and a crane. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called an overhead crane, an overhead crane, or a crane. The main feature of a tire crane is that its driving cab and the lifting control room are combined into one. It is evolved from a crawler crane (crawler crane), and the crawler and traveling support parts of the traveling mechanism are transformed into a chassis with tires. In the powerhouse of a hydropower station, a large amount of cargo needs to be lifted and transported by crane. However, during the lifting and transportation process, the cargo is prone to the shaking of the rope when it moves quickly or when the wind is strong, causing the cargo to tilt and slide.

[0003] A crane hoist anti-sway device described in a patent application with announcement number CN211920676U includes components such as a suspension plate, a balancing motor, and a balancing steel cable. Through the coordinated arrangement of the lifting steel cables and the suspension plate, when the lifting process is in use and moving in the horizontal direction, since there is a certain angle between the four lifting steel cables and the suspension plate, the four lifting steel cables will exert a certain horizontal pulling force on the suspension plate under the action of the gravity of the cargo, thereby ensuring that shaking will not occur easily or reducing the amplitude of shaking during the movement.

[0004] However, existing anti-sway devices have certain limitations in identifying and correcting the tilt of the spreader. They are often unable to accurately sense the tilt of the spreader in real time and make effective corrections. In addition, when the wind is strong or the crane starts / stops quickly, the risk of cargo tilting and slipping is still high. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a sling and a crane, which realizes the functions of automatic leveling and protection of the sling by setting a deviation correction component and a protection component.

[0006] The sling of the first aspect embodiment of the present invention includes a hanging plate, a correction component and at least one protective component, the axis of the hanging plate is arranged in the up-down direction, the correction component includes a driving member, a rope and a horizontal sensor, the driving member is suitable for being connected to a crane, there are multiple ropes, the upper ends of multiple ropes are connected to the driving member, the lower ends of multiple ropes are connected to the upper end of the hanging plate, and the lower ends of multiple ropes are distributed on the hanging plate at intervals along the circumference of the hanging plate, the driving member can independently control each rope to be wound or released, the horizontal sensor is connected to the hanging plate and electrically connected to the driving member, the protective component includes a protective plate and an elastic member, the protective plate is connected to the hanging plate, the upper end of the elastic member is connected to the hanging plate, and the lower end of the elastic member is connected to the protective plate. The protective plate is movable on the hanging tray along the axial direction of the hanging tray, so that the protective plate has an unlocking position and a blocking position; when the hanging tray is in a horizontal state, under the action of its own gravity and the pulling force of the elastic member, the upper edge of the protective plate is not higher than the upper edge of the hanging tray, and the protective plate is located in the unlocking position at this time; when the hanging tray is in an inclined state, a part of the protective plate is pressed on the hanging tray, so that a part of the protective plate is supported by the hanging tray, and at this time the pulling direction of the elastic member is parallel to the axial direction of the hanging tray, and the pulling force of the elastic member is greater than the component of the gravity of the protective plate in the axial direction of the hanging tray, the elastic member contracts and drives at least part of the protective plate to be located above the hanging tray, and at this time the protective plate is located in the protective position.

[0007] The sling of the embodiment of the present invention is provided with a correction component. Once the hanging platform shakes left and right and becomes unstable, the horizontal sensor under the hanging platform can automatically identify the horizontality of the hanging platform at this time, and automatically send data information of the tilt angle and tilt direction to the driving part. After receiving the information, the driving part will automatically reel in the rope according to different data information, and reel in the ropes of different degrees and positions into the driving part, thereby realizing automatic leveling of the hanging platform by ropes and maintaining its stable lifting and moving work; the sling of the embodiment of the present invention is provided with a protection component. When the correction component fails to work normally or other unexpected situations occur, causing the hanging platform to tilt and unable to return to a horizontal state normally, the elastic part drives the protection plate to move from the unlocking position to the blocking position, so as to protect the objects in the middle of the hanging platform and avoid safety problems caused by the objects slipping.

[0008] In some embodiments, the protective assembly also includes a telescopic rod, the upper end of which is connected to the hanging plate, and the axis of the telescopic rod is parallel to the axis of the hanging plate, and the lower end of the telescopic rod is connected to the protective plate.

[0009] In some embodiments, the telescopic rod is provided with an air inlet and an exhaust port, both of which are connected to the interior of the telescopic rod, the diameter of the air inlet is larger than the diameter of the exhaust port, and both of the air inlet and the exhaust port are provided with a one-way valve.

[0010] In some embodiments, the protective assembly further includes a counterweight limit block, which is connected to the protective plate and located below the protective plate, and the counterweight limit block is used to adjust the center of gravity of the protective plate and limit the movement range of the protective plate.

[0011] In some embodiments, the sling also includes a warning component, the hanging plate includes an upper plate, a lower plate and a spiral column, the two ends of the spiral column are respectively connected to the upper plate and the lower plate, and the axis of the spiral column is parallel to the axis of the hanging plate, the warning component includes a connecting rod, a push handle, a rotating ring and at least one blade, the two ends of the connecting rod are respectively connected to the protective plate and the push handle, the push handle is sleeved on the spiral column and movable along the axial direction of the spiral column, the rotating ring is sleeved on the spiral column and threadedly matched with the spiral column, the lower end of the rotating ring is abutted against the upper end of the push handle, the blade is connected to the rotating ring, and the length direction of the blade is arranged along the radial direction of the rotating ring, the blade is made of reflective material, or a reflective strip is adhered to the blade.

[0012] In some embodiments, there are multiple protective components, spiral columns and warning components. The multiple protective components are distributed at intervals along the circumference of the hanging plate, and there is a spiral column between two adjacent protective components. The multiple warning components correspond one-to-one to the multiple spiral columns, and the push handle and the rotating ring are both mounted on the corresponding spiral columns.

[0013] In some embodiments, the correction assembly also includes multiple connecting parts, and the multiple connecting parts correspond one by one to the multiple ropes. The multiple connecting parts can be detachably connected to the sling and are located above the hanging plate, and the lower ends of the ropes are connected to the corresponding connecting parts.

[0014] In some embodiments, at least one slag leakage groove is provided on the hanging plate, and the slag leakage groove penetrates the hanging plate in the up-down direction.

[0015] The crane of the second embodiment of the present invention comprises a base, a crane body and a sling, wherein the base is suitable for being connected to the ground, the crane body is connected to the base, the sling is connected to the crane body, and the sling is the sling described in any one of the above embodiments.

[0016] The crane of the embodiment of the present invention uses the hanging platform of the above-mentioned embodiment. Once the hanging platform shakes left and right and becomes unstable, the horizontal sensor under the hanging platform can automatically identify the horizontality of the hanging platform at this time, and automatically send the data information of the tilt angle and the tilt direction to the driving part. After receiving the information, the driving part will automatically reel in the rope according to different data information, and reel in the ropes of different degrees and positions into the driving part, thereby realizing the automatic leveling of the hanging platform by the rope and maintaining its stable lifting and moving work. When the deviation correction component fails to work normally or other unexpected situations occur, causing the hanging platform to tilt and unable to return to the horizontal state normally, the elastic part drives the protective plate to move from the unlocking position to the blocking position, so as to protect the objects in the middle of the hanging platform and avoid safety problems caused by the objects slipping.

[0017] In some embodiments, the crane further comprises a first hook rope and a second hook lock, wherein the first hook lock is connected to the crane body, and the second hook lock is connected to the driving member of the spreader. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a hanger according to an embodiment of the present invention.

[0019] Figure 2 The present invention Figure 1 A partial enlarged view of point a in the middle.

[0020] Figure 3 It is a schematic diagram of the partial structure of the lifting device according to an embodiment of the present invention.

[0021] Figure 4 The present invention Figure 3 A partial enlarged view of point b in the middle.

[0022] Figure 5 is an exploded view of a hanger according to an embodiment of the present invention.

[0023] Figure 6 It is a three-dimensional schematic diagram of a warning component according to an embodiment of the present invention.

[0024] Figure 7 The motion diagram of the hanger of the embodiment of the present invention is shown in FIG. Figure 1 .

[0025] Figure 8 The motion diagram of the hanger of the embodiment of the present invention is shown in FIG. Figure 2 .

[0026] Fig. 9 Schematic diagram of a crane according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Suspension plate 1, upper plate 11, lower plate 12, spiral column 13,

[0029] Correction component 2, driving member 21, rope 22, level sensor 23, connecting member 24,

[0030] Protection assembly 3, protection plate 31, elastic member 32, telescopic rod 33, air inlet 331, exhaust port 332, counterweight limit block 34,

[0031] Warning component 4, connecting rod 41, push handle 42, rotating ring 43, blade 44,

[0032] Base 5,

[0033] Crane body 6,

[0034] First hook 7,

[0035] Second hook lock 8. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] The following describes the lifting device and the crane according to the embodiments of the present invention in conjunction with the accompanying drawings.

[0038] like Figure 1-8 As shown, the lifting device of the first embodiment of the present invention comprises a lifting plate 1, a deviation correction component 2 and at least one protection component 3. Wherein:

[0039] The axis of the hanging plate 1 is arranged in the up and down direction. The hanging plate 1 is the core load-bearing component of the whole sling, which is used to carry and lift objects. The shape and size of the hanging plate 1 can be designed according to actual needs, but it is usually designed to be round, square or other shapes that are convenient for placing and lifting objects.

[0040] The deviation correction component 2 includes a driving member 21, a rope 22 and a level sensor 23. The deviation correction component 2 is used to monitor the horizontal state of the hanging plate 1 in real time and make adjustments when the hanging plate 1 is tilted to ensure the stability of the lifting process; the driving member 21 is suitable for being connected to the crane. The driving member 21 can be a driving device such as a plurality of motors or a winch that can reel in and release the rope 22, and is controlled by the control system in the same manner; there are a plurality of ropes 22, the upper ends of the plurality of ropes 22 are all connected to the driving member 21, the lower ends of the plurality of ropes 22 are all connected to the upper end of the hanging plate 1, and the plurality of The lower ends of the ropes 22 are spaced apart on the hanging platter 1 along the circumference of the hanging platter 1 to ensure the stability of the hanging platter 1 in the horizontal direction. The driving member 21 can independently control each rope 22 to be wound or released to ensure that the leveling of the hanging platter 1 can be carried out smoothly; the horizontal sensor 23 is connected to the hanging platter 1 and is electrically connected to the driving member 21. It can monitor the horizontal state of the hanging platter 1 in real time and feed back the monitoring results to the driving member 21. When the hanging platter 1 tilts, the horizontal sensor 23 will send a signal, and the driving member 21 will perform corresponding adjustment operations according to the signal.

[0041] The protective component 3 includes a protective plate 31 and an elastic member 32. The protective component 3 is used to provide additional support and protection when the hanging platform 1 is tilted to prevent objects from slipping off or being damaged. The protective plate 31 is connected to the hanging platform 1, and its shape and size can be designed according to actual needs. The upper end of the elastic member 32 is connected to the hanging platform 1, and the lower end of the elastic member 32 is connected to the protective plate 31. The elastic member 32 can be a spring, an elastic belt or other elastic member 32 that can generate elastic tension. Its function is to provide a stable tension so that the protective plate 31 can be quickly moved to the blocking position when the hanging platform 1 is tilted.

[0042] The protective plate 31 is movable on the hanging plate 1 along the axial direction of the hanging plate 1, so that the protective plate 31 has an unlocking position and a blocking position:

[0043] When the hanging plate 1 is in a horizontal state, the upper edge of the protective plate 31 is not higher than the upper edge of the hanging plate 1 under the action of its own gravity and the pulling force of the elastic member 32. At this time, the protective plate 31 is in the unlocked position, and the protective plate 31 will not cause any obstruction to the lifting of the object;

[0044] When the hanging tray 1 is in an inclined state, a part of the protective plate 31 is pressed on the hanging tray 1 so that a part of the protective plate 31 is supported by the hanging tray 1. At this time, the pulling direction of the elastic member 32 is parallel to the axial direction of the hanging tray 1, and the pulling force of the elastic member 32 is greater than the component of the gravity of the protective plate 31 in the axial direction of the hanging tray 1. The elastic member 32 contracts and drives at least a part of the protective plate 31 to be located above the hanging tray 1. At this time, the protective plate 31 is in a protective position to block the objects on the hanging tray 1 to prevent them from falling.

[0045] During the lifting process, when the hanging platform 1 remains in a horizontal state, the protective plate 31 is in an unlocked position and will not have any impact on the lifting of the items; when the hanging platform 1 tilts due to some reason, the horizontal sensor 23 will immediately detect this change and send a signal to the driving member 21. The driving member 21 will perform corresponding adjustment operations according to the signal to try to restore the horizontal state of the hanging platform 1. At the same time, the protective plate 31 will also move quickly to the blocking position under the pulling force of the elastic member 32 to prevent the items from slipping from the hanging platform 1 and being damaged.

[0046] The sling of the embodiment of the present invention is provided with the correction component 2. Once the hanging plate 1 shakes left and right unstably, the horizontal sensor 23 under the hanging plate 1 can automatically identify the horizontality of the hanging plate 1 at this time, and automatically send the data information of the tilt angle and the tilt direction to the driving member 21. After receiving the information, the driving member 21 will automatically reel in the rope 22 according to different data information, and reel the rope 22 into the driving member 21 at different degrees and positions, so as to realize the automatic leveling of the hanging plate 1 by the rope 22 and maintain its stable lifting and moving work; the sling of the embodiment of the present invention is provided with the protection component 3. When the correction component 2 fails to work normally or other unexpected situations occur, causing the hanging plate 1 to tilt and fail to return to the horizontal state normally, the elastic member 32 drives the protection plate 31 to move from the unlocking position to the blocking position, so as to protect the objects in the middle of the hanging plate 1 and avoid safety problems caused by the objects slipping.

[0047] like Figure 3 and Figure 4 As shown, in some embodiments, the protective assembly 3 also includes a telescopic rod 33, the upper end of the telescopic rod 33 is connected to the hanging plate 1, and the axis of the telescopic rod 33 is parallel to the axis of the hanging plate 1, and the lower end of the telescopic rod 33 is connected to the protective plate 31.

[0048] It can be understood that, through the provision of the telescopic rod 33, the transition of the protective plate 31 between the unlocking position and the blocking position is smoother and more reliable, thereby improving the overall safety and stability of the sling, and when the hanging plate 1 tilts, the telescopic rod 33 can not only provide additional supporting force, but also effectively limit the movement trajectory of the protective plate 31 to prevent it from colliding with the hanging plate 1 or other components due to excessive swinging.

[0049] like Figure 4 As shown, further, the telescopic rod 33 is provided with an air inlet 331 and an exhaust port 332, both of which are connected to the interior of the telescopic rod 33, the diameter of the air inlet 331 is larger than the diameter of the exhaust port 332, and both of the air inlet 331 and the exhaust port 332 are provided with a one-way valve.

[0050] It should be noted that since both the air inlet 331 and the exhaust port 332 are provided with a one-way valve, the gas can only enter the telescopic rod 33 from the air inlet 331 and be discharged from the exhaust port 332; when the hanging platform 1 is tilted, the gas can quickly enter the telescopic rod 33 through the air inlet 331 with a larger diameter, so as to reduce the impact on the movement of the protective plate 31, so that the protective plate 31 can quickly move from the unlocked position to the blocked position; and when the hanging platform 1 returns to the horizontal state, since the diameter of the exhaust port 332 is small and the gas exhaust speed is slow, the telescopic rod 33 will gradually shrink, so that the protective plate 31 slowly moves from the blocking position back to the unlocked position, thereby increasing the protection time of the protective plate 31 to the objects, and further reducing the risk of objects falling.

[0051] like Figures 3 to 5 As shown, in some embodiments, the protective assembly 3 also includes a counterweight limit block 34, which is connected to the protective plate 31 and is located below the protective plate 31. On the one hand, the counterweight limit block 34 is used to adjust the center of gravity of the protective plate 31 to make it more stable during movement. On the other hand, the counterweight limit block 34 also limits the movement range of the protective plate 31 to prevent it from colliding with other components or causing movement interference due to excessive movement.

[0052] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the hanging plate 1 includes an upper plate 11, a lower plate 12 and a spiral column 13, the two ends of the spiral column 13 are respectively connected to the upper plate 11 and the lower plate 12, and the axis of the spiral column 13 is parallel to the axis of the hanging plate 1. The upper plate 11 and the lower plate 12 serve as the top and bottom supporting structures of the hanging plate 1 respectively, and the spiral column 13 serves as a bridge connecting the two, which not only enhances the structural strength of the hanging plate 1, but also provides the necessary mechanical linkage basis for the warning component 4 and the protection component 3.

[0053] The sling also includes a warning component 4, which includes a connecting rod 41, a push handle 42, a rotating ring 43 and at least one blade 44. The two ends of the connecting rod 41 are respectively connected to the protective plate 31 and the push handle 42. The push handle 42 is sleeved on the spiral column 13 and can move along the axial direction of the spiral column 13. The rotating ring 43 is sleeved on the spiral column 13 and is threadedly matched with the spiral column 13, so that when the rotating ring 43 moves along the axial direction of the spiral column 13, the rotating ring 43 will rotate with the axis of the spiral column 13 as the center of rotation. The lower end of the rotating ring 43 is abutted against the upper end of the push handle 42. The blade 44 is connected to the rotating ring 43, and the length direction of the blade 44 is arranged along the radial direction of the rotating ring 43. The blade 44 is made of reflective material, or a reflective strip is adhered to the blade 44.

[0054] It should be noted that when the hanging platform 1 is tilted, the protective plate 31 moves from the unlocking position to the blocking position under the elastic force of the elastic member 32. At this time, the protective plate 31 drives the rotating ring 43 to move along the axial direction of the spiral column 13 through the connecting rod 41 and the push handle 42. The rotating ring 43 drives the blades 44 to rotate to produce an obvious visual effect to alert the surrounding staff.

[0055] like Figures 1 to 7 As shown, in some embodiments, there are multiple protective components 3, spiral columns 13 and warning components 4, and the multiple protective components 3 are distributed at intervals along the circumference of the hanging plate 1, and there is a spiral column 13 between two adjacent protective components 3. The multiple warning components 4 correspond to the multiple spiral columns 13 one by one, and the push handles 42 and the rotating rings 43 are both mounted on the corresponding spiral columns 13.

[0056] It can be understood that multiple protective components 3, multiple spiral columns 13 and multiple warning components 4 can protect the items on the hanging plate 1 in multiple directions and send warning signals to surrounding personnel in multiple directions, further improving the safety of the lifting equipment.

[0057] like Figure 1 As shown, in some embodiments, the correction component 2 also includes a plurality of connectors 24, and the plurality of connectors 24 correspond one by one to the plurality of ropes 22. The plurality of connectors 24 can be detachably connected to the sling and are located above the hanging plate 1, and the lower end of the rope 22 is connected to the corresponding connector 24.

[0058] It can be understood that the design of the detachable connector 24 makes the sling more convenient to maintain and replace parts. When a connector 24 or rope 22 fails, the staff can quickly remove it and replace it with a new part without disassembling the entire sling, which not only improves work efficiency but also reduces maintenance costs.

[0059] In some embodiments, at least one slag leakage groove (not shown) is provided on the hanging plate 1, and the slag leakage groove penetrates the hanging plate 1 in the up and down directions. When impurities or debris are mixed in the hoisted items, they can fall through the slag leakage groove to avoid the accumulation of impurities or debris and affect the lifting.

[0060] like Fig. 9 As shown, the crane of the second embodiment of the present invention comprises a base 5, a crane body 6 and a sling.

[0061] The base 5 is suitable for being connected to the ground, and provides stable support for the crane body 6. The design of the base 5 should take into account the bearing capacity of the ground and the weight distribution of the crane to ensure the stability of the crane during operation.

[0062] The crane body 6 is connected to the base 5 and is responsible for realizing various actions of the hoisting operation. Generally, the crane body 6 includes key components such as the boom, the slewing mechanism, and the luffing mechanism. The boom is used to extend and retract to cover different working ranges. The slewing mechanism enables the crane body 6 to rotate on the horizontal plane to adapt to different working directions. The luffing mechanism is used to adjust the inclination angle of the boom to meet the hoisting requirements of different heights and distances. The crane body 6 can also be provided with other functional components or auxiliary components to realize other different functions.

[0063] The sling is connected to the crane body 6 and is used to directly lift objects. The sling is any one of the slings in the above-mentioned embodiments. This sling has automatic deviation correction, safety protection and warning functions, which can greatly improve the safety and efficiency of lifting operations. The specific structure and function of the sling have been described in the previous embodiments and will not be repeated here.

[0064] The crane of the embodiment of the present invention uses the hanging platform 1 of the above-mentioned embodiment. Once the hanging platform 1 shakes left and right unstably, the horizontal sensor 23 under the hanging platform 1 can automatically identify the horizontality of the hanging platform 1 at this time, and automatically send the data information of the tilt angle and the tilt direction to the driving member 21. After receiving the information, the driving member 21 will automatically reel in the rope 22 according to different data information, and reel in the rope 22 at different degrees and positions into the driving member 21, so as to realize the automatic leveling of the hanging platform 1 by the rope 22 and maintain its stable lifting and moving work; when the correction component 2 cannot work normally or other unexpected situations occur, causing the hanging platform 1 to tilt and cannot return to the horizontal state normally, the elastic member 32 drives the protective plate 31 to move from the unlocking position to the blocking position, so as to protect the objects in the middle of the hanging platform 1 and avoid safety problems caused by the objects slipping.

[0065] like Figure 1 and Fig. 9 As shown, in some embodiments, the crane further includes a first hook rope and a second hook lock 8, the first hook lock 7 is connected to the crane body 6, and the second hook lock 8 is connected to the driving member 21 of the spreader.

[0066] It can be understood that, through the provision of the first hook rope and the second hook lock 8, the sling can be quickly replaced to meet the lifting needs of different scenarios.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A sling, characterized in that: include: A hanging plate, wherein the axis of the hanging plate is arranged along the up-down direction; A deviation correction component, the deviation correction component includes a driving member, a rope and a level sensor, the driving member is suitable for being connected to a crane, there are a plurality of ropes, the upper ends of the plurality of ropes are connected to the driving member, the lower ends of the plurality of ropes are connected to the upper end of the hanging plate, and the lower ends of the plurality of ropes are distributed on the hanging plate at intervals along the circumference of the hanging plate, the driving member can independently control each of the ropes to be wound up or released, the level sensor is connected to the hanging plate and is electrically connected to the driving member; At least one protection component, the protection component comprising a protection plate and an elastic member, the protection plate is connected to the hanging plate, the upper end of the elastic member is connected to the hanging plate, and the lower end of the elastic member is connected to the protection plate; The protective plate is movable on the hanging tray along the axial direction of the hanging tray, so that the protective plate has an unlocking position and a blocking position; when the hanging tray is in a horizontal state, under the action of its own gravity and the pulling force of the elastic member, the upper edge of the protective plate is not higher than the upper edge of the hanging tray, and the protective plate is located in the unlocking position at this time; when the hanging tray is in an inclined state, a part of the protective plate is pressed on the hanging tray, so that a part of the protective plate is supported by the hanging tray, and at this time the pulling direction of the elastic member is parallel to the axial direction of the hanging tray, and the pulling force of the elastic member is greater than the component of the gravity of the protective plate in the axial direction of the hanging tray, the elastic member contracts and drives at least part of the protective plate to be located above the hanging tray, and at this time the protective plate is located in the protective position.

2. The sling according to claim 1, characterized in that: The protection component also includes a telescopic rod, the upper end of which is connected to the hanging plate, and the axis of the telescopic rod is parallel to the axis of the hanging plate, and the lower end of the telescopic rod is connected to the protection plate.

3. The sling according to claim 2, characterized in that: The telescopic rod is provided with an air inlet and an exhaust port, both of which are connected to the interior of the telescopic rod, the diameter of the air inlet is larger than the diameter of the exhaust port, and both of which are provided with one-way valves.

4. The sling according to any one of claims 1 to 3, characterized in that: The protection assembly also includes a counterweight limit block, which is connected to the protection plate and located below the protection plate. The counterweight limit block is used to adjust the center of gravity of the protection plate and limit the movement range of the protection plate.

5. The sling according to claim 1, characterized in that: It also includes a warning component, the hanging plate includes an upper plate, a lower plate and a spiral column, the two ends of the spiral column are respectively connected to the upper plate and the lower plate, and the axis of the spiral column is parallel to the axis of the hanging plate, the warning component includes a connecting rod, a push handle, a rotating ring and at least one blade, the two ends of the connecting rod are respectively connected to the protective plate and the push handle, the push handle is sleeved on the spiral column and is movable along the axial direction of the spiral column, the rotating ring is sleeved on the spiral column and is threadedly matched with the spiral column, the lower end of the rotating ring is abutted against the upper end of the push handle, the blade is connected to the rotating ring, and the length direction of the blade is arranged along the radial direction of the rotating ring, the blade is made of reflective material, or a reflective strip is adhered to the blade.

6. The sling according to claim 5, characterized in that: There are multiple protective components, spiral columns and warning components. The multiple protective components are distributed at intervals along the circumference of the hanging plate, and there is a spiral column between two adjacent protective components. The multiple warning components correspond to the multiple spiral columns one by one, and the push handle and the rotating ring are both mounted on the corresponding spiral columns.

7. The sling according to claim 1, characterized in that: The deviation-correcting assembly further includes a plurality of connectors, each of which corresponds to each of the ropes. Each of the connectors can be detachably connected to the sling and is located above the hanging plate, and the lower end of the rope is connected to the corresponding connector.

8. The sling according to claim 1, characterized in that: At least one slag leakage groove is provided on the hanging plate, and the slag leakage groove penetrates the hanging plate in the up-down direction.

9. A crane, characterized in that: include: A base, the base being adapted to be connected to the ground; A crane body, wherein the crane body is connected to the base; A sling, wherein the sling is connected to the crane body, and the sling is the sling according to any one of claims 1 to 8.

10. The crane according to claim 9, characterized in that It also includes a first hook rope and a second hook lock, wherein the first hook lock is connected to the crane body, and the second hook lock is connected to the driving member of the spreader.

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