Lifting appliance and crane

Abstract

The utility model provides a lifting appliance and a crane, and relates to the technical field of lifting. The lifting appliance comprises a first bearing element, a second bearing element, an arch-shaped element, a first rotating shaft element and a second rotating shaft element, the first end of the first bearing element is rotationally connected with the first end of the arched element through a first rotating shaft element, and the first end of the second bearing element is rotationally connected with the second end of the arched element through a second rotating shaft element; an included angle consistent with the direction of the inner surface of the arched element is formed between the first bearing element and the second bearing element; the second end of the first bearing element is connected with the second end of the second bearing element. The crane comprises the lifting appliance. According to the lifting appliance, the lifting appliance can be automatically unlocked, and the safety and the working efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of lifting technology, and more particularly to a lifting device and a crane. Background Technology

[0002] When hoisting the drive chain, it is initially stored horizontally. After installation in the engine room, the drive chain tilts, creating an angle between it and the engine room. Currently, a single-crane delivery method is commonly used. Before hoisting, the drive chain is placed next to the foundation. Two cranes, a main crane and an auxiliary crane, work together to lift the chain. Once the chain is tilted upwards, the auxiliary crane detaches its hook, and the main crane lifts it to the predetermined height and then moves the equipment to the engine room for installation. During this process, to prevent the tilted drive chain from interfering with the fixture or ground and causing damage, an auxiliary crane works with the main crane to lift the chain evenly. After the drive chain is detached from the fixture or ground and at a certain height above the ground, the auxiliary crane begins to loosen the chain and withdraws from the hoisting operation.

[0003] Currently, when removing the auxiliary hoist, the lifting equipment needs to be dismantled manually. During the dismantling process, it is necessary to climb onto the transmission chain suspended in the air to remove the lifting equipment one by one. The operation is cumbersome, time-consuming, labor-intensive, and poses safety hazards. Utility Model Content

[0004] In view of the above problems, this application provides a lifting device and a crane that can realize the automatic unlocking process of the lifting device, avoid the situation of manually removing the lifting ring at high altitude, improve work efficiency, and enhance safety.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a lifting device, including: a first load-bearing element, a second load-bearing element, an arched element, a first rotating shaft element, and a second rotating shaft element;

[0007] The first end of the first load-bearing element is rotatably connected to the first end of the arched element through the first rotating shaft element, and the first end of the second load-bearing element is rotatably connected to the second end of the arched element through the second rotating shaft element.

[0008] The first load-bearing element and the second load-bearing element form an angle that is consistent with the direction of the inner surface of the arched element;

[0009] The second end of the first load-bearing element is connected to the second end of the second load-bearing element, and the upper part of the lifting ring is mounted on the upper ends of the second ends of the first load-bearing element and the second end of the second load-bearing element.

[0010] As the lifting device moves downward, the lower part of the lifting ring separates the second end of the first load-bearing element from the second end of the second load-bearing element.

[0011] In one possible implementation, the spreader further includes a third pivot element and a fourth pivot element, which are arranged side by side on top of the arched element;

[0012] The first rotating shaft element includes a first gear and a first shaft body; the second rotating shaft element includes a second gear and a second shaft body; the first gear is sleeved on the first shaft body, and the second gear is sleeved on the second shaft body;

[0013] The third rotating shaft element includes: a third gear, a fourth gear, and a third shaft body; the fourth rotating shaft element includes: a fifth gear, a sixth gear, and a fourth shaft body; the size of the third gear is smaller than that of the fourth gear, and the size of the fifth gear is smaller than that of the sixth gear;

[0014] The third and fourth gears are coaxially connected via the third shaft, and the fifth and sixth gears are coaxially connected via the fourth shaft; the fourth and sixth gears mesh with each other.

[0015] The third gear is connected to the first gear by a chain, and the fifth gear is connected to the second gear by a chain.

[0016] In one possible implementation, the lifting device further includes a fifth pivot element and a sixth pivot element, which are respectively disposed in the middle of the arched element;

[0017] The fifth rotating shaft element includes: a seventh gear and a seventh shaft; the sixth rotating shaft element includes: an eighth gear and an eighth shaft; the seventh gear is sleeved on the seventh shaft, and the eighth gear is sleeved on the eighth shaft;

[0018] The third gear is connected to the seventh gear by a chain, and the seventh gear is connected to the first gear by a chain.

[0019] The fifth gear is connected to the eighth gear by a chain, and the eighth gear is connected to the second gear by a chain.

[0020] In one possible implementation, the arched element includes: a first arched main body and a second arched main body arranged parallel to each other;

[0021] The first arched main body is detachably or fixedly connected to the first shaft, the second shaft, the third shaft, the fourth shaft, the seventh shaft, and the eighth shaft, respectively.

[0022] The second arched main body is detachably or fixedly connected to the first shaft, second shaft, third shaft, fourth shaft, seventh shaft, and eighth shaft respectively.

[0023] In one possible implementation, the arched element further includes: a third arched body;

[0024] The third arched main body is built on top of the first and second arched main bodies.

[0025] In one possible implementation, the second end of the first load-bearing element and the second end of the second load-bearing element are respectively in a stepped structure in a preset direction, and the stepped structure is used to support the upper part of the lifting ring.

[0026] In one possible implementation, the arched element is equipped with slings.

[0027] In one possible implementation, a first buffer element and a second buffer element are respectively provided on the contact surface between the second end of the first load-bearing element and the second end of the second load-bearing element.

[0028] In one possible implementation, the first buffer element is embedded in the contact surface corresponding to the second end of the first load-bearing element;

[0029] The second buffer element is embedded in the contact surface corresponding to the second end of the second load-bearing element;

[0030] The first and second buffer elements are rolling bearings, respectively.

[0031] Secondly, embodiments of this application provide a crane, including the lifting device as described in the first aspect and any possible implementation.

[0032] The lifting device and crane provided in this application embodiment connect the first end of the first load-bearing element to the first end of the arched element via a first rotating shaft element, and connect the first end of the second load-bearing element to the second end of the arched element via a second rotating shaft element. Simultaneously, the second ends of the first and second load-bearing elements are connected, enabling them to support the lifting ring and lift heavy objects. The first and second load-bearing elements form an angle consistent with the inner surface direction of the arched element, thus preventing the lifting ring from detaching due to gravity during lifting. Both the second ends of the first and second load-bearing elements can open inwards towards the arched element. Therefore, when the lifting device moves downwards, even when unloaded, the lower part of the lifting ring can contact and separate with the second ends of the first and second load-bearing elements under its own weight, achieving automatic unlocking. This reduces the need for manual operation throughout the process, eliminates the need for manual dismantling, lowers the risk of accidents, improves safety, reduces the possibility of human error, and makes the lifting and unloading process faster, thereby improving overall work efficiency.

[0033] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the lifting devices and cranes provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation methods. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a structural schematic diagram of the first state of the lifting device provided in the embodiments of this application;

[0036] Figure 2 This is a structural schematic diagram of the second state of the lifting device provided in the embodiments of this application;

[0037] Figure 3 This is a schematic diagram of the transmission device of the lifting device provided in the embodiments of this application;

[0038] Figure 4 A partial structural schematic diagram of the transmission device of the lifting device provided in the embodiments of this application;

[0039] Figure 5 This is a schematic diagram of the arched element of the lifting device provided in the embodiments of this application;

[0040] Figure 6 This is a structural schematic diagram of the load-bearing element of the lifting device provided in the embodiments of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 10 - First load-bearing element; 11 - First end of the first load-bearing element; 12 - Second end of the first load-bearing element; 13 - First buffer element;

[0043] 20 - Second load-bearing element; 21 - First end of the second load-bearing element; 22 - Second end of the second load-bearing element; 23 - Second buffer element;

[0044] 30 - Arched element; 31 - First arched body; 32 - Second arched body; 33 - Third arched body; 34 - First end of the arched element; 35 - Second end of the arched element;

[0045] 40 - First rotating shaft element; 41 - First gear; 42 - First shaft body;

[0046] 50 - Second rotating shaft element; 51 - Second gear; 52 - Second shaft body;

[0047] 60 - Third rotating shaft element; 61 - Third gear; 62 - Fourth gear; 63 - Third shaft body;

[0048] 70 - Fourth rotating shaft element; 71 - Fifth gear; 72 - Sixth gear; 73 - Fourth shaft body;

[0049] 80 - Fifth rotating shaft element; 81 - Seventh gear; 82 - Seventh shaft body;

[0050] 90 - Sixth rotating shaft element; 91 - Eighth gear; 92 - Eighth shaft body;

[0051] 100-Chain. Detailed Implementation

[0052] As in the background art and related technologies, when using the single-host delivery method for hoisting, when the auxiliary crane is relaxed and withdrawn from the hoisting work, the traditional lifting equipment requires the operator to climb onto the suspended lifting ring, loosen the bolts, and remove the screws from the lifting ring, thereby dismantling the lifting equipment one by one. Therefore, there is a risk of the operator falling, and the manual dismantling is inefficient and cannot meet the requirements of the working conditions.

[0053] To address the aforementioned technical problems, this application provides a lifting device and a crane. The first and second load-bearing elements of the lifting device are rotatably connected to an arched element, with the second end of the first load-bearing element connected to the second end of the second load-bearing element. Their upper ends form a load-bearing area, allowing the upper part of the lifting ring to be hung on this area for lifting operations. Simultaneously, the first and second load-bearing elements form an angle aligned with the inner surface direction of the arched element, preventing the lifting ring from detaching from the first and second load-bearing elements. When the transmission chain connected to the lifting ring has left the ground, the lifting ring is suspended, and the lifting device no longer bears weight. Therefore, when the lifting device moves downwards, the lower part of the lifting ring contacts the second end of the first and second load-bearing elements, causing them to separate and detach from the lifting ring, thus completing the dismantling process. This unlocking process is completed automatically without manual intervention, improving work efficiency. Furthermore, this lifting device can better adapt to and cope with complex or dangerous working environments, reducing reliance on manual operation and exhibiting high applicability.

[0054] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0055] See Figures 1 to 6 , Figure 1 This is a structural schematic diagram of the first state of the lifting device provided in the embodiments of this application; Figure 2 This is a structural schematic diagram of the second state of the lifting device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the transmission device of the lifting device provided in the embodiments of this application; Figure 4 A partial structural schematic diagram of the transmission device of the lifting device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the arched element of the lifting device provided in the embodiments of this application; Figure 6 This is another partial structural schematic diagram of the lifting device provided in an embodiment of this application.

[0056] The first state is when the first load-bearing element 10 and the second load-bearing element 20 of the lifting device are connected. At this time, the lifting device is in normal state, that is, the lifting device is in a load-bearing state during the lifting operation. The second state is when the first load-bearing element 10 and the second load-bearing element 20 of the lifting device are separated. At this time, the lifting device is not under load and is in a self-unlocking state.

[0057] Firstly, this application provides a lifting device, please refer to... Figure 1 The lifting device may include: a first load-bearing element 10, a second load-bearing element 20, an arched element 30, a first rotating shaft element 40, and a second rotating shaft element 50. The arched element 30 is the main structure of the lifting device. The arched structure can effectively distribute and transfer the load, thereby improving the stability and safety of the overall structure.

[0058] The first end 11 of the first load-bearing element and the first end 34 of the arched element are rotatably connected via the first rotating shaft element 40, and the first end 21 of the second load-bearing element and the second end 35 of the arched element are rotatably connected via the second rotating shaft element 50. Therefore, the first end 11 of the first load-bearing element and the first end 34 of the arched element can rotate relative to each other, and the first end 21 of the second load-bearing element and the second end 35 of the arched element can rotate relative to each other. Here, the first end 34 and the second end 35 of the arched element refer to the arch foot positions of the arched element 30, i.e., the starting point of the arch.

[0059] In this embodiment, the first rotating shaft element 40 and the second rotating shaft element 50 can be cylindrical shafts, and the first load-bearing element 10 and the second load-bearing element 20 can be load-bearing arms that are approximately cuboid in shape, each having its own connection point. When the two are connected, the connection point is the support point. The first load-bearing element 10, the second load-bearing element 20, the first rotating shaft element 40, and the second rotating shaft element 50 are all made of high-strength, corrosion-resistant materials, such as alloy steel or stainless steel, to improve the durability and safety of the lifting device.

[0060] The first load-bearing element 10 and the second load-bearing element 20 form an angle that is consistent with the direction of the inner surface of the arched element 30. This angle is located inside the arched element 30, that is, the sum of the lengths of the first load-bearing element 10 and the second load-bearing element 20 is greater than the length between the first end 34 and the second end 35 of the arched element, so that the rotation of the first load-bearing element 10 and the second load-bearing element 20 will not leave the interior of the arched element 30, thus forming a stable structure.

[0061] Please continue to refer to Figure 1 During the hoisting process, the second end 12 of the first load-bearing element is connected to the second end 22 of the second load-bearing element, and the upper part of the lifting ring is mounted on the upper end of the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element, ensuring that the lifting ring can be stably suspended at the position where the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element are connected, maintaining relative balance, and maintaining stability when the lifting device moves upward.

[0062] Please refer to Figure 2 After the hoisting is completed, the lifting device no longer bears the weight, and the lifting ring is suspended. During the automatic unlocking process, the lifting device moves downward, and the lower part of the lifting ring will apply a force towards the inside of the arched element 30. At the same time, under the influence of the self-weight of the lifting device, the first load-bearing element 10 and the second load-bearing element 20 will rotate inward towards the inside of the arched element 30, so that the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element will separate and no longer be connected. The lifting ring will disengage, thereby achieving automatic unlocking.

[0063] In some embodiments, each component is a modular structure, which facilitates quick assembly and disassembly under different working conditions, improving the adaptability and flexibility of the lifting device.

[0064] In addition, sensors and control systems can be integrated into the spreader to enable real-time monitoring and automatic control of the spreader's status, further improving safety and operational efficiency.

[0065] The lifting device provided in this application embodiment rotatably connects the first end 11 of the first load-bearing element to the first end 34 of the arched element via the first rotating shaft element 40, and simultaneously rotatably connects the first end 21 of the second load-bearing element to the second end 35 of the arched element via the second rotating shaft element 50. This allows both the first load-bearing element 10 and the second load-bearing element 20 to rotate relative to each other. The first load-bearing element 10 and the second load-bearing element 20 form an angle consistent with the inner surface direction of the arched element 30, and the second end 12 of the first load-bearing element is connected to the second end 22 of the second load-bearing element. This ensures that the first load-bearing element 10 and the second load-bearing element 20 remain stable under load and will not slip. When not under load, the first load-bearing element 10 and the second load-bearing element 20 can rotate inwards into the arched element 30, separating them and achieving automatic unlocking of the lifting device, detaching from the lifting ring. This reduces the time and complexity of manual operation, improves work efficiency, and also reduces the time operators spend in hazardous areas, enhancing operational safety.

[0066] Please continue to refer to this. Figure 1 To further ensure the stability of the lifting device, in one possible implementation, the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element are respectively stepped in a predetermined direction. The stepped structure is used to support the upper part of the lifting ring, and the stepped structure is recessed on the load-bearing element used to support the lifting ring in the predetermined direction. The predetermined direction can refer to the lifting direction during the lifting process. For example, the predetermined direction can be the vertical direction.

[0067] This stepped structure allows the load of the lifting ring to be concentrated in the recessed area, effectively transferring the force to the load-bearing components, reducing force dispersion, and improving the load-bearing capacity of the lifting equipment. On the other hand, the recessed stepped structure can accommodate lifting rings of different sizes and shapes, preventing the lifting rings from sliding or undergoing large displacements and slipping during lifting, thereby improving the safety and stability of the operation and reducing the occurrence of accidents.

[0068] Furthermore, in this embodiment, the arched element 30 is provided with a sling, which can be fixedly connected to the arch top of the arched element 30, that is, the highest point of the arched element 30. Through the sling, the lifting device can also be connected to the crane to realize the lifting process.

[0069] By connecting the arch to the slings, the load can be distributed more evenly across the entire arch element 30, thereby reducing local stress concentration and lowering the risk of structural damage.

[0070] It should be noted that this application does not specifically limit the connection method between the arched element 30 and the sling. For example, it can be fixedly connected by welding or movably connected by threading.

[0071] Please refer to Figure 3 and Figure 4 In one possible implementation, the lifting device further includes a third pivot element 60 and a fourth pivot element 70, which are arranged side by side on the top of the arched element 30, effectively utilizing the space of the arched element 30 and making the structure of the entire lifting device more compact.

[0072] The first rotating shaft element 40 includes a first gear 41 and a first shaft 42; the second rotating shaft element 50 includes a second gear 51 and a second shaft 52; the first gear 41 is sleeved on the first shaft 42 and the second gear 51 is sleeved on the second shaft 52, so the rotation direction of the first gear 41 is the same as that of the first shaft 42 and the rotation direction of the second gear 51 is the same as that of the second shaft 52.

[0073] The third rotating shaft element 60 includes a third gear 61, a fourth gear 62, and a third shaft 63; the fourth rotating shaft element 70 includes a fifth gear 71, a sixth gear 72, and a fourth shaft 73; the size of the third gear 61 is smaller than that of the fourth gear 62, and the size of the fifth gear 71 is smaller than that of the sixth gear 72, so that when the third gear 61 and the first gear 41, and the fifth gear 71 and the second gear 51 are respectively engaged in chain drive, it will not affect the meshing rotation process between the fourth gear 62 and the sixth gear 72.

[0074] The third gear 61 and the fourth gear 62 are coaxially connected through the third shaft 63, thus rotating coaxially. The fifth gear 71 and the sixth gear 72 are coaxially connected through the fourth shaft 73, thus also rotating coaxially. The fourth gear 62 and the sixth gear 72 mesh with each other, so their rotation directions are opposite.

[0075] The third gear 61 is connected to the first gear 41 via a chain 100, and the fifth gear 71 is connected to the second gear 51 via a chain 100. Therefore, the third gear 61 and the first gear 41 are driven by a chain, and their rotation directions are the same. The fifth gear 71 and the second gear 51 are driven by a chain, and their rotation directions are the same.

[0076] During the self-unlocking process, the first load-bearing element 10 rotates inward toward the arched element 30, causing the first shaft 42 to rotate counterclockwise simultaneously. Therefore, the first gear 41 also rotates counterclockwise. Simultaneously, through the action of the chain 100, the third gear 61 also rotates counterclockwise. Thus, the third gear 61 and the fourth gear 62 rotate coaxially, causing the fourth gear 62 to also rotate counterclockwise. Since the fourth gear 62 and the sixth gear 72 are meshed, the sixth gear 72 rotates clockwise. Correspondingly, the first gear 41, which rotates coaxially with the sixth gear 72... The fifth gear 71 also rotates clockwise. Under the action of the chain 100, the second gear 51 also rotates clockwise, thereby driving the second shaft 52 to rotate clockwise. Then, the second load-bearing element 20 rotates into the interior of the arched element 30 under the drive of the second shaft 52. Thus, the first load-bearing element 10 and the second load-bearing element 20 separate synchronously and at the same distance, avoiding the situation where the two load-bearing elements close or separate inconsistently, which would cause the lifting ring to fall off or fail to complete the self-unlocking smoothly during the hoisting process. This improves the working accuracy and reliability of the lifting equipment during the hoisting process.

[0077] Please continue to refer to Figure 3 In this embodiment, the lifting device further includes a fifth pivot element 80 and a sixth pivot element 90. The fifth pivot element 80 and the sixth pivot element 90 are respectively disposed in the middle of the arch element 30. That is, the fifth pivot element 80 is located between the third pivot element 60 at the top of the arch and the first pivot element 40 at the bottom of the arch, and the sixth pivot element 90 is located between the fourth pivot element 70 at the top of the arch and the second pivot element 50 at the bottom of the arch.

[0078] The fifth rotating shaft element 80 includes a seventh gear 81 and a seventh shaft 82; the sixth rotating shaft element 90 includes an eighth gear 91 and an eighth shaft 92; the seventh gear 81 is sleeved on the seventh shaft 82, and the eighth gear 91 is sleeved on the eighth shaft 92, so the rotation direction of the seventh gear 81 and the seventh shaft 82 is the same, and the rotation direction of the eighth gear 91 and the eighth shaft 92 is the same.

[0079] The third gear 61 is connected to the seventh gear 81 via chain 100, and the seventh gear 81 is connected to the first gear 41 via chain 100; the fifth gear 71 is connected to the eighth gear 91 via chain 100, and the eighth gear 91 is connected to the second gear 51 via chain 100. Therefore, the third gear 61 and the seventh gear 81, and the seventh gear 81 and the first gear 41 are connected by chain drive, and their rotation directions are the same. The fifth gear 71 and the eighth gear 91, and the eighth gear 91 and the second gear 51 are also connected by chain drive, and their rotation directions are the same.

[0080] During the self-unlocking process, the fifth and sixth rotating shaft elements 80 do not change the basic principle of the above-mentioned implementation process. The difference is that the seventh and eighth gears 81 will be added to the transmission process. Specifically, when the first gear 41 rotates counterclockwise, it will drive the seventh gear 81 to rotate counterclockwise under the action of the chain 100. Similarly, when the fifth gear 71 rotates clockwise, it will drive the eighth gear 91 to rotate clockwise under the action of the chain 100. The remaining transmission processes are as described above and will not be repeated here.

[0081] The fifth and sixth pivot elements 80 help stabilize the chain 100, reducing vibration and jumping during operation, thereby improving the smoothness and reliability of the entire transmission system. At the same time, by adding a gear in the middle of the arched element 30, a more compact transmission system layout can be achieved, optimizing space utilization.

[0082] The lifting device provided in this application embodiment, through the mechanical transmission process of gears and shafts in the third rotating shaft element 60, the fourth rotating shaft element 70, the fifth rotating shaft element 80, and the sixth rotating shaft element 90, as well as the meshing action of the gears, can realize the synchronous opening and closing of the first load-bearing element 10 and the second load-bearing element 20, reduce unstable factors in the lifting process, optimize the structural distribution of the lifting device, and achieve more precise and stable self-unlocking.

[0083] Please refer to Figure 3 and Figure 5 In one possible implementation, the arched element 30 includes a first arched body 31 and a second arched body 32 arranged parallel to each other. In this arrangement, the first arched body 31 and the second arched body 32 can protect the various rotating shaft elements and load-bearing elements between them from the influence of the external environment, such as rainwater, dust, corrosion, etc., thereby extending the service life of the lifting device.

[0084] The first arched main body 31 is detachably or fixedly connected to the first shaft 42, the second shaft 52, the third shaft 63, the fourth shaft 73, the seventh shaft 82, and the eighth shaft 92, respectively. The second arched main body 32 is also detachably or fixedly connected to the first shaft 42, the second shaft 52, the third shaft 63, the fourth shaft 73, the seventh shaft 82, and the eighth shaft 92, respectively. By connecting the first arched main body 31 and the second arched main body 32 to both ends of each shaft, the gears in each rotating shaft element can be protected without affecting the relative rotation of the first load-bearing element 10 and the second load-bearing element 20, preventing the load-bearing element from slipping off, and enabling the hoisting process and the self-unlocking process. Thus, the first arched main body 31 and the second arched main body 32 can integrate the internal components together to form a whole structure, improving the integrity and coordination of the equipment.

[0085] In this embodiment, when the first arched body 31 and the second arched body 32 are detachably connected to the first shaft 42, the second shaft 52, the third shaft 63, the fourth shaft 73, the seventh shaft 82, and the eighth shaft 92, respectively, if a component of the lifting device is damaged, the first arched body 31 or the second arched body 32 can be disassembled for inspection, and the damaged part can be replaced individually without replacing the entire lifting device. This facilitates maintenance and reduces repair costs. When the first arched body 31 and the second arched body 32 are fixedly connected to the first shaft 42, the second shaft 52, the third shaft 63, the fourth shaft 73, the seventh shaft 82, and the eighth shaft 92, respectively, they can withstand greater loads and stresses, reduce the risk of loosening at the connection points, and improve the safety and reliability of the lifting device. Therefore, the connection method can be comprehensively considered and selected based on actual application requirements, usage environment, and cost-effectiveness.

[0086] In this embodiment, the arched element 30 further includes: a third arched body 33;

[0087] The third arched body 33 is installed over the first arched body 31 and the second arched body 32, thus protecting them and further preventing external environmental damage to the internal components of the lifting device. This reduces direct contact between external factors and internal components, minimizing wear and corrosion and improving the reliability of the lifting device. Simultaneously, the third arched body 33 increases the rigidity of the overall structure, helping to distribute and transfer stress more evenly, reducing deformation and vibration, and improving the durability of the lifting device.

[0088] The lifting device provided in this application embodiment, through the parallel first arched body 31 and second arched body 32, and detachably or fixedly connected to the first shaft 42, second shaft 52, third shaft 63, fourth shaft 73, seventh shaft 82 and eighth shaft 92 respectively, can prevent direct impact and damage to the internal components of the lifting device from the external environment, thereby improving the reliability and durability of the lifting device. In addition, by covering the first arched body 31 and the second arched body 32 with the third arched body 33, the internal components can be further protected and stress can be distributed and transmitted, thereby improving the load-bearing capacity of the lifting device.

[0089] Please refer to Figure 6 In one possible implementation, a first buffer element 13 and a second buffer element 23 are respectively provided on the contact surface between the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element. During the self-unlocking process of the lifting device, the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element will contact the lower part of the lifting ring, resulting in greater friction and increasing the difficulty of unlocking. The first buffer element 13 and the second buffer element 23 can reduce the frictional resistance and make the unlocking process smoother.

[0090] As an example, the material and size of the first buffer element 13 and the second buffer element 23 can be adjusted according to the shape of the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element. For example, the first buffer element 13 and the second buffer element 23 can be buffer pads. Furthermore, the buffer pads can be made of rubber, which has good elasticity and impact resistance. The buffer pads can be cylindrical or square.

[0091] As another example, in this embodiment, the first buffer element 13 is embedded in the contact surface corresponding to the second end 12 of the first load-bearing element; the second buffer element 23 is embedded in the contact surface corresponding to the second end 22 of the second load-bearing element; the first buffer element 13 and the second buffer element 23 are rolling bearings respectively. With this arrangement, the rolling bearings can bear the load through rolling elements (such as balls or rollers). Since the rolling friction coefficient is much lower than the sliding friction coefficient, the friction force can be reduced, making the self-unlocking process of the lifting device smoother.

[0092] The lifting device provided in this application embodiment, by providing a first buffer element 13 and a second buffer element 23 on the contact surface between the second end 12 of the first load-bearing element and the second end 22 of the second load-bearing element respectively, can reduce the friction between the load-bearing elements, make the self-unlocking process smoother, and at the same time reduce the wear between the contact surfaces of the load-bearing elements, thus extending the service life of the lifting device.

[0093] Secondly, embodiments of this application provide a crane, including the lifting device as described in the first aspect and any possible implementation. By enabling a self-unlocking process through the lifting device, on the one hand, the crane can easily detach the hook and disengage from the lifting ring when operating as an auxiliary lifting device during hoisting operations, achieving automated operation, improving hoisting efficiency, and enhancing safety; on the other hand, it allows the crane to adapt to various complex working environments, such as high altitudes, narrow spaces, or dangerous areas, expanding its application range and improving its versatility and applicability.

[0094] The crane provided in this application embodiment can improve the applicability of the single-host delivery and hoisting method through the self-unlocking function of the lifting device, including improving operational efficiency, enhancing safety, facilitating operation, adapting to complex environments, and cost-effectiveness, thereby significantly improving the overall performance and reliability of hoisting operations.

[0095] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0096] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A lifting device, characterized in that, include: A first load-bearing element, a second load-bearing element, an arched element, a first rotating shaft element, and a second rotating shaft element; The first end of the first load-bearing element is rotatably connected to the first end of the arched element through the first rotating shaft element, and the first end of the second load-bearing element is rotatably connected to the second end of the arched element through the second rotating shaft element; The first load-bearing element and the second load-bearing element form an angle that is consistent with the direction of the inner surface of the arched element; The second end of the first load-bearing element is connected to the second end of the second load-bearing element, and the upper part of the lifting ring is mounted on the upper ends of the second ends of the first load-bearing element and the second load-bearing element. When the lifting device moves downward, the lower part of the lifting ring separates the second end of the first load-bearing element from the second end of the second load-bearing element.

2. The lifting device according to claim 1, characterized in that, The lifting device further includes a third rotating shaft element and a fourth rotating shaft element, which are arranged side by side on the top of the arched element; The first rotating shaft element includes a first gear and a first shaft; the second rotating shaft element includes a second gear and a second shaft; the first gear is sleeved on the first shaft, and the second gear is sleeved on the second shaft; The third rotating shaft element includes: a third gear, a fourth gear, and a third shaft; the fourth rotating shaft element includes: a fifth gear, a sixth gear, and a fourth shaft; the size of the third gear is smaller than that of the fourth gear, and the size of the fifth gear is smaller than that of the sixth gear; The third gear and the fourth gear are coaxially connected via the third shaft, and the fifth gear and the sixth gear are coaxially connected via the fourth shaft; the fourth gear and the sixth gear mesh with each other; The third gear is connected to the first gear via a chain, and the fifth gear is connected to the second gear via a chain.

3. The lifting device according to claim 2, characterized in that, The lifting device further includes a fifth rotating shaft element and a sixth rotating shaft element, wherein the fifth rotating shaft element and the sixth rotating shaft element are respectively disposed in the middle of the arched element; The fifth rotating shaft element includes a seventh gear and a seventh shaft; the sixth rotating shaft element includes an eighth gear and an eighth shaft; the seventh gear is sleeved on the seventh shaft, and the eighth gear is sleeved on the eighth shaft; The third gear is connected to the seventh gear by a chain, and the seventh gear is connected to the first gear by a chain; The fifth gear is connected to the eighth gear by a chain, and the eighth gear is connected to the second gear by a chain.

4. The lifting device according to claim 3, characterized in that, The arched element includes: a first arched main body and a second arched main body arranged parallel to each other; The first arched main body is detachably or fixedly connected to the first shaft, the second shaft, the third shaft, the fourth shaft, the seventh shaft, and the eighth shaft, respectively. The second arched main body is detachably or fixedly connected to the first shaft, the second shaft, the third shaft, the fourth shaft, the seventh shaft, and the eighth shaft.

5. The lifting device according to claim 4, characterized in that, The arched element further includes: a third arched body; The third arched body is mounted on the first arched body and the second arched body.

6. The lifting device according to any one of claims 1-5, characterized in that, The second end of the first load-bearing element and the second end of the second load-bearing element are respectively stepped in a preset direction, and the stepped structure is used to support the upper part of the lifting ring.

7. The lifting device according to any one of claims 1-5, characterized in that, The arched element is equipped with a sling.

8. The lifting device according to any one of claims 1-5, characterized in that, A first buffer element and a second buffer element are respectively provided on the contact surface between the second end of the first load-bearing element and the second end of the second load-bearing element.

9. The lifting device according to claim 8, characterized in that, The first buffer element is embedded in the contact surface corresponding to the second end of the first load-bearing element; The second buffer element is embedded in the contact surface corresponding to the second end of the second load-bearing element; The first buffer element and the second buffer element are rolling bearings.

10. A crane, characterized in that, Includes the lifting device described in any one of claims 1-9 above.

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