Balance lifting appliance

Abstract

The invention provides a balance lifting appliance, and relates to the technical field of lifting. The balance lifting appliance comprises an annular lifting assembly, a rotating device, a lifting device, a ram assembly, a grabbing assembly and a counterweight assembly, the annular lifting assembly comprises an annular rail, the rotating device is slidably connected with the annular rail, the lower end of the rotating device is fixedly connected with the lifting device, and the traction end of the lifting device is connected with the ram assembly. The grabbing end of the ram assembly is connected with the grabbing assembly, and the balance weight end of the ram assembly is connected with the balance weight assembly. The hoisting efficiency of hoisting operation can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, and in particular to a balancing hoist. Background Art

[0002] Lifting plays a vital role in modern engineering and construction. Traditional manual handling methods can no longer meet the growing construction needs, so lifting technology came into being. It uses various lifting equipment such as cranes, hooks and rigging to safely move heavy objects from one place to another, greatly improving the efficiency and safety of the project.

[0003] However, due to the limitations of traditional lifting equipment and the use environment, there are often lifting blind spots when lifting workpieces, which brings certain difficulties to the lifting of the workpiece and affects the efficiency of lifting. Summary of the invention

[0004] The technical problem solved by the invention is how to improve the efficiency of hoisting.

[0005] In order to solve the above problems, the present invention provides a balancing sling, including a ring hanging assembly, a rotating device, a lifting device, a lifting rod assembly, a grabbing assembly and a counterweight assembly, the ring hanging assembly includes an annular track, the rotating device is slidably connected to the annular track, the lower end of the rotating device is fixedly connected to the lifting device, the traction end of the lifting device is connected to the lifting rod assembly, the grabbing end of the lifting rod assembly is connected to the grabbing assembly, and the counterweight end of the lifting rod assembly is connected to the counterweight assembly.

[0006] Optionally, the rotating device includes a power mechanism, a pulley and a support structure, the support structure is suspended on the circular track through the pulley, the axle of the pulley is connected to the support structure, the power mechanism is used to drive the pulley to rotate, and the lower end of the support structure is fixedly connected to the lifting device.

[0007] Optionally, the hoist also includes a pulley assembly, which includes a movable part, a screw nut and a handwheel screw, the movable part is movably connected to the grabbing end of the lifting rod assembly, the screw nut is fixedly connected to the movable part, the handwheel screw is passed through the screw nut, and the handwheel screw is fixedly connected to the grabbing end of the lifting rod assembly; the grabbing assembly is installed on the movable part.

[0008] Optionally, the movable part includes a first side plate, a second side plate, and a pull rod, the upper ends and lower ends of the first side plate and the second side plate are respectively fixedly connected by the pull rod, horizontal guide pulleys are respectively provided on opposite sides of the first side plate and the second side plate, and the grabbing end of the lifting rod assembly includes an upper arm and a lower arm respectively extending along the axial direction of the lifting rod assembly, the upper arm and the lower arm are respectively inserted between the pull rod and the horizontal guide pulley, the lower surface of the upper arm is against the horizontal guide pulley, and the upper surface of the lower arm is against the horizontal guide pulley.

[0009] Optionally, the pull rod includes an upper pull rod and a lower pull rod, both ends of the upper pull rod are fixedly connected to the upper ends of the first side plate and the second side plate respectively, and the lower pull rod is fixedly connected to the lower ends of the first side plate and the second side plate respectively, the upper arm is passed through the upper pull rod and the horizontal guide pulley, and the lower surface of the upper arm is against the horizontal guide pulley, and the lower arm is passed through the lower pull rod and the horizontal guide pulley, and the upper surface of the lower arm is against the horizontal guide pulley.

[0010] Optionally, the grabbing end of the lifting rod assembly also includes vertical side arms fixedly connected to the center lines of the lower surface of the upper arm and the upper surface of the lower arm, respectively; the screw nut is fixedly connected to the first side plate; the handwheel screw is passed through the screw nut; and both ends of the handwheel screw are rotationally connected to the vertical side arms, respectively.

[0011] Optionally, the lifting rod assembly includes a middle section lifting rod, a grabbing section lifting rod and a counterweight section lifting rod, the grabbing end of the grabbing section lifting rod is connected to the grabbing assembly, the other end of the grabbing section lifting rod is fixedly connected to one end of the middle section lifting rod, the other end of the middle section lifting rod is fixedly connected to one end of the counterweight section lifting rod, the counterweight end of the counterweight section lifting rod is connected to the counterweight assembly, and the traction end of the lifting device is connected to the middle section lifting rod.

[0012] Optionally, the middle section lifting rod also includes a first connecting member, and a first side arm and a second side arm extending horizontally along the radial direction of the middle section lifting rod. The upper ends of the middle section lifting rod, the first side arm and the second side arm are respectively provided with lifting rings, and the lifting rings are respectively connected to the traction end of the lifting device through the first connecting member.

[0013] Optionally, the counterweight assembly includes a second connecting member and a hanging basket, one end of the second connecting member is connected to the counterweight end of the lifting rod assembly, and the other end of the second connecting member is connected to the hanging basket, and the lower surface of the hanging basket is provided with casters.

[0014] Optionally, the grabbing assembly includes a grabbing base plate and a connecting side plate, one side surface of the grabbing base plate is fixedly connected to the grabbing end of the lifting rod assembly, the other side surface of the grabbing base plate is fixedly connected to one end of the connecting side plate, and a grabbing through hole is provided on the side of the connecting side plate away from the grabbing base plate, and the grabbing through hole is used to connect to the target object to be grabbed.

[0015] The beneficial effects of the balancing sling of the present invention are as follows: the ring hanging assembly is fixedly connected to the top of the top cover to provide a stable installation foundation for the entire device, ensuring that there will be no shaking or displacement during operation. The sliding connection between the annular track and the rotating device allows the device to rotate in a circle in the horizontal direction, greatly expanding the operating range and being able to flexibly reach different positions for operation. The lifting device can adjust the height of the lifting rod assembly according to actual needs, adapt to operating scenes at different heights, improve the versatility of the device, and can be adjusted at different angles and heights, greatly reducing the installation time and improving construction efficiency. The grabbing assembly can select a suitable connection method according to the characteristics of the target object, ensuring a firm grasp while improving the accuracy of the installation. The setting of the counterweight assembly effectively balances the weight of the lifting rod assembly, making the entire device more stable during operation, reducing shaking and accidents caused by imbalance, and providing a safer working environment for construction personnel. At the same time, the connection of each component is firm and reliable. After rigorous testing and inspection, it can withstand the weight of the upper short section and reduce safety risks. The balancing sling can adapt to different construction environments and conditions. In the blind spot of the crane with limited space, the target object can be hoisted to the specified position by adjusting the position of the rotating device in the circular track and the direction of the lifting rod assembly. When facing target objects of different weights and sizes, the balance of the lifting rod assembly can be maintained by adjusting the counterweight of the matching assembly, thereby achieving efficient and stable lifting operations. The balancing sling of this embodiment realizes accurate grasping, lifting and placement of the target object through the synergy between the components, effectively improving the efficiency and safety of the lifting operation. . BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a balancing hanger according to an embodiment of the present invention;

[0017] Figure 2 It is a schematic structural diagram of a rotating device and a lifting device according to an embodiment of the present invention;

[0018] Figure 3 It is a structural schematic diagram of a pulley assembly according to an embodiment of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the side of the pulley assembly of an embodiment of the present invention;

[0020] Figure 5It is a schematic structural diagram of a lifting assembly according to an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1-ring hanging assembly; 11-ring track; 111-vertical ring track; 112-horizontal ring track; 2-rotating device; 21-power mechanism; 22-pulley; 23-bracket structure; 231-bracket side plate; 3-lifting device; 31-traction end; 4-lifting rod assembly; 41-middle lifting rod; 411-first side arm; 412-second side arm; 413-first connecting piece; 414-lifting ring; 42-grabbing section lifting rod; 421-upper arm; 42 2-lower arm; 423-vertical side arm; 43-counterweight section lifting rod; 5-grabbing assembly; 51-grabbing bottom plate; 52-connecting side plate; 6-counterweight assembly; 61-second connecting piece; 62-hanging basket; 63-castor; 7-pulley assembly; 71-movable part; 711-first side plate; 712-second side plate; 713-pull rod; 7131-upper pull rod; 7132-lower pull rod; 714-horizontal guide pulley; 72-screw nut; 73-handwheel screw. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0024] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0025] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". The "connection" mentioned in the present invention, unless otherwise specified, may refer to direct connection or indirect connection through one or more intermediate components; it may also refer to detachable connection, welding, or integrated connection.

[0026] It should be noted that when the weight of the workpiece is too heavy to be lifted by manpower, it means that it is impossible to rely on traditional manpower handling and installation methods, and specific mechanical devices or installation processes must be used. However, due to the limitations of the construction environment and lifting equipment, there are often lifting blind spots. It may be difficult to lift the workpiece to the blind spot, which reduces the lifting efficiency of the lifting work and increases the complexity of the installation. For example, in the construction process of the fast-push nuclear power plant unit, in order not to affect the construction work such as the welding flaw detection of the girth weld between the cone top cover and the main container cylinder, the radial heat shield is divided into upper and lower sections in the height direction, namely the lower shield body and the upper short section. Among them, the lower shield body is first welded, and then the upper short section is placed in advance before the welding of the cone top cover and the main container cylinder. After the welding flaw detection of the girth weld between the cone top cover and the main container cylinder is completed, the upper short section is welded. The diameter of the fast reactor radial heat shield is about 15 meters. Due to the large weight of the upper short section, it cannot be lifted by manpower, and it is located in the blind spot of the crane, which makes it difficult to install it in place.

[0027] In view of the problems existing in the above-mentioned related technologies, this embodiment provides a balancing hanger.

[0028] like Figure 1-3 As shown, a balancing sling according to an embodiment of the present invention comprises a ring hanging assembly 1, a rotating device 2, a lifting device 3, a lifting rod assembly 4, a grabbing assembly 5 and a counterweight assembly 6, the ring hanging assembly 1 comprises an annular track 11, the rotating device 2 is slidably connected to the annular track 11, the lower end of the rotating device 2 is fixedly connected to the lifting device 3, the traction end 31 of the lifting device 3 is connected to the lifting rod assembly 4, the grabbing end of the lifting rod assembly 4 is connected to the grabbing assembly 5, and the counterweight end of the lifting rod assembly 4 is connected to the counterweight assembly 6.

[0029] Specifically, the balancing sling includes a ring hanging assembly 1, a rotating device 2, a lifting device 3, a lifting rod assembly 4, a grabbing assembly 5 and a counterweight assembly 6. The ring hanging assembly 1 plays a key fixing and connecting role in the whole device. It can be fixedly connected to the top of the top cover, which is the top of the main structure in the lifting operation. By fixing the ring hanging assembly 1 to the top of the main structure, it is ensured that the whole device has a stable foundation and a higher working point during the working process, so that the target object can be lifted to any required position. The annular track 11 in the ring hanging assembly 1 provides a running path for the rotating device 2, so that the rotating device 2 can slide smoothly on the annular track 11. The design of the annular track 11 can realize the free movement of the rotating device 2 within a certain range, thereby providing greater flexibility for subsequent operations. The rotating device 2 is slidably connected to the annular track 11, which enables it to perform circular motion on the annular track 11. In this way, the rotating device 2 can drive the lifting device 3 fixedly connected to it to adjust at different angles and positions. The function of the rotating device 2 is to expand the working range of the entire device. Through circular motion, it can adapt to the operation requirements of different directions and positions. In actual work, the rotating device 2 can be accurately adjusted according to the specific situation to ensure that the lifting device 3 and other components can accurately lift the workpiece of the target object to the target position. The lifting device 3 is responsible for realizing the vertical movement. Its traction end 31 is connected to the lifting rod assembly 4. The height of the lifting rod assembly 4 is controlled by its own lifting action. The lifting device 3 can be accurately adjusted in height as needed, so that the grabbing assembly 5 can accurately grab and place the target object. The lifting rod assembly 4 plays the role of connecting and transmitting force. Its grabbing end is connected to the grabbing assembly 5, so that the grabbing and lifting of the target object can be realized through the grabbing assembly 5. The counterweight end of the lifting rod assembly 4 is connected to the counterweight assembly 6. The weight of the grabbing end is balanced by the counterweight to ensure the stability of the entire device during the working process. The lifting rod assembly 4 uses the principle of lever. Its design needs to take into account the transmission and balance of force, as well as the coordination with other components to ensure the safe and reliable operation of the entire device. The main function of the counterweight assembly 6 is to provide balancing force for the boom assembly 4. By connecting with the counterweight end of the boom assembly 4, the counterweight assembly 6 can offset the weight of the target object borne by the grabbing end, thereby maintaining the balance of the entire sling. The weight and position of the counterweight assembly 6 need to be reasonably designed and adjusted according to factors such as the length of the boom assembly 4 and the weight of the grabbing object, so as to ensure the stability and safety of the device during operation.The grabbing assembly 5 is one of the key components of the entire device. It directly contacts the target object and realizes the grabbing function. The design of the grabbing assembly 5 needs to take into account factors such as the shape, size, and weight of the target object to ensure a stable connection with the target object. The grabbing assembly 5 can be implemented in a variety of forms to grasp the target object, such as fixedly connecting with the target object through bolts, and then disassembling it after lifting. The specific choice depends on the actual application requirements. During the working process, the grabbing assembly 5 needs to work closely with other components such as the lifting device 3 and the lifting rod assembly 4 to achieve accurate grasping and placement of the target object.

[0030] In this embodiment, the ring hanging assembly 1 is fixedly connected to the top of the top cover to provide a stable installation foundation for the entire device, ensuring that there will be no shaking or displacement during the operation. The sliding connection between the annular track and the rotating device 2 allows the device to rotate in a circle in the horizontal direction, greatly expanding the operating range and being able to flexibly reach different positions for operation. The lifting device 3 can adjust the height of the lifting rod assembly 4 according to actual needs, adapt to operating scenes at different heights, improve the versatility of the device, and can be adjusted at different angles and heights, greatly reducing the installation time and improving construction efficiency. The grabbing assembly 5 can select a suitable connection method according to the characteristics of the target object, ensuring a firm grasp while improving the accuracy of the installation. The setting of the counterweight assembly 6 effectively balances the weight of the lifting rod assembly 4, making the entire device more stable during operation, reducing shaking and accidents caused by imbalance, and providing a safer working environment for construction personnel. At the same time, the connection of each component is firm and reliable. After rigorous testing and inspection, it can withstand the weight of the upper short section and reduce safety risks. The balanced sling can adapt to different construction environments and conditions. In the blind spot of the crane with limited space, the target object can be hoisted to the specified position by adjusting the position of the rotating device 2 in the circular track 11 and / or changing the horizontal extension direction of the lifting rod assembly 4. When facing target objects of different weights and sizes, the balance of the lifting rod assembly 4 is maintained by adjusting the counterweight of the counterweight assembly, thereby achieving efficient and stable lifting operations. The balanced sling of this embodiment can accurately grasp, lift and place the target object through the synergy between the components, effectively improving the efficiency and safety of the lifting operation.

[0031] like Figure 2 As shown, optionally, the rotating device 2 includes a power mechanism 21, a pulley 22 and a support structure 23, the support structure 23 is suspended on the annular track 11 through the pulley 22, the axle of the pulley 22 is connected to the support structure 23, the power mechanism 21 is used to drive the pulley 22 to rotate, and the lower end of the support structure 23 is fixedly connected to the lifting device 3.

[0032] Specifically, the power mechanism 21 is the core driving part of the rotating device 2, which provides power for the rotation of the pulley 22. It can be a motor, a hydraulic motor and other equipment. The performance of the power mechanism 21 directly affects the operating efficiency and stability of the rotating device 2. Its output power needs to be reasonably selected according to the load condition and rotation speed requirements of the entire device. During operation, the power mechanism 21 transmits power to the pulley 22 through the transmission system, so that it can rotate smoothly on the circular track 11. The pulley 22 plays a key role in connection and motion transmission in the rotating device 2. It is connected to the support structure 23 through the wheel axle, so that the pulley 22 can roll on the circular track 11 under the support of the support. The material of the pulley 22 usually needs to have high strength and good wear resistance to ensure stable operation during long-term use. The diameter and wheel width of the pulley 22 also need to be reasonably designed according to the size and load requirements of the circular track 11 to ensure sufficient bearing capacity and motion stability. The support structure 23 is the main support part of the rotating device 2, which is suspended on the circular track 11 through the pulley 22 to provide a stable installation platform for the power mechanism 21 and the lifting device 3. The design of the support structure 23 needs to take into account factors such as strength, rigidity and stability to ensure that it will not be deformed or damaged when bearing the weight of the entire device and various forces. The shape and size of the support can be customized according to actual needs. It is usually made of high-strength materials such as steel structure or aluminum alloy. The lower end of the support is fixedly connected to the lifting device 3 to ensure that the connection between the two is firm and reliable, and can effectively transmit force and movement. The power mechanism 21, pulley 22 and support structure 23 of the rotating device 2 cooperate with each other to achieve smooth rotation and precise control on the annular track 11, providing important guarantees for the flexible operation and accurate installation of the entire device.

[0033] In one case of the present embodiment, the support structure 23 includes a support base plate and support side plates 231 symmetrically arranged on both sides of the support floor, the support side plates 231 are fixedly connected to the upper surface of the support base plate, and pulleys 22 are relatively provided on the side of the two support side plates 231 away from the support base plate. The number of pulleys 22 on each support side plate 231 can be greater than or equal to two, thereby ensuring the stability of the support structure 23 sliding on the annular track 11, avoiding the swing that may be caused by a single pulley 22 on one side, and improving the stability during lifting. The annular track 11 includes a vertical annular track 111 and a horizontal annular track 112 extending horizontally to both sides along the vertical annular track 11. The width of the horizontal annular track 112 matches the width of the two bracket side plates 231. The horizontal annular track 112 is penetrated by the pulley 22 and the bracket bottom plate. The pulleys 22 on the two bracket side plates 231 are respectively against the upper surface of the horizontal ring, so that the pulley 22 moves on the horizontal annular track 112 by rotation. The power mechanism 21 can be set on the bracket side plate 231 on either side, and a gear is provided on the pulley 22 on the same side as the power structure. The gear of the power mechanism 21 is meshed with the gear on the pulley 22. The power mechanism 21 drives the pulley 22 to rotate on the horizontal annular track 112 through the meshing gears.

[0034] like Figure 3 As shown, optionally, the hoist also includes a pulley assembly 7, the pulley assembly 7 includes a movable part 71, a screw nut 72 and a handwheel screw 73, the movable part 71 is movably connected to the grabbing end of the lifting rod assembly 4, the screw nut 72 is fixedly connected to the movable part 71, the handwheel screw 73 is passed through the screw nut 72, and the handwheel screw 73 is fixedly connected to the grabbing end of the lifting rod assembly 4; the grabbing assembly 5 is installed on the movable part 71.

[0035] Specifically, the movable part 71 is movably connected to the grabbing end of the lifting rod assembly 4, and the grabbing assembly 5 is installed on the movable part 71, so that the movable part 71 can be moved or adjusted in position relative to the grabbing end of the lifting rod assembly 4 within a certain range. The movable connection provides flexibility for the operation of the hoist, and the position of the hoisted target object can be adjusted within a certain range. The screw nut 72 is fixedly connected to the movable part 71 to ensure that the relative position between the two is fixed. The handwheel screw 73 is passed through the screw nut 72, and its two ends are respectively fixedly connected to the lifting rod assembly 4 near the grabbing end. When the handwheel screw 73 rotates, the screw nut 72 will move along the axial direction of the handwheel screw 73, thereby driving the movable part 71 fixedly connected thereto to move together. The design accuracy and quality of the screw nut 72 directly affect the running stability and accuracy of the pulley assembly 7. It is usually made of high-strength metal materials and can withstand large loads and friction. The design of the handwheel screw 73 allows the operator to accurately control the position of the pulley assembly 7 by manual operation, thereby adjusting the position and state of the grabbing end of the lifting rod assembly 4. The accuracy and pitch of the handwheel screw 73 determine the moving accuracy and speed of the pulley assembly 7. The pulley assembly 7 of the sling provides accurate position adjustment and control functions for the grabbing end of the sling through the coordinated action of the movable part 71, the screw nut 72 and the handwheel screw 73, thereby improving the applicability and operating convenience of the sling.

[0036] In this optional embodiment, a pulley assembly 7 is further provided between the grabbing end of the lifting rod assembly 4 and the grabbing assembly 5. The pulley assembly 7 is slidably connected to the grabbing end of the lifting rod assembly 4, and the side of the pulley assembly 7 away from the grabbing end is fixedly connected to the grabbing assembly 5. The pulley assembly 7 can move the grabbing assembly 5 in the axial direction of the lifting rod assembly 4 through the movable connection with the grabbing end, so as to adjust the position when the target object is hoisted, adapt to the installation conditions of different positions, and effectively improve the efficiency of the hoisting operation. The screw nut 72 is fixedly connected to the sliding assembly, the handwheel screw 73 is passed through the screw nut 72, and the two ends of the handwheel screw 73 are respectively fixedly connected to the lifting rod assembly 4 near the grabbing end. When the handwheel of the handwheel screw 73 is turned, the screw nut 72 moves on the screw along the axial direction of the lifting rod assembly 4, and then drives the movable part 71 fixedly connected thereto through the screw nut, so that the movable part 71 can move along the axial direction of the lifting rod assembly 4.

[0037] like Figure 3 and Figure 4As shown, optionally, the movable part 71 includes a first side plate 711, a second side plate 712, and a pull rod 713, the upper end and the lower end of the first side plate 711 and the second side plate 712 are respectively fixedly connected by the pull rod 713, and horizontal guide pulleys 714 are respectively provided on the opposite sides of the first side plate 711 and the second side plate 712, and the grabbing end of the lifting rod assembly 4 includes an upper arm 421 and a lower arm 422 respectively extending along the axial direction of the lifting rod assembly 4, and the upper arm 421 and the lower arm 422 are respectively inserted between the pull rod 713 and the horizontal guide pulley 714, and the lower surface of the upper arm 421 is against the horizontal guide pulley 714, and the upper surface of the lower arm 422 is against the horizontal guide pulley 714.

[0038] Specifically, the first side plate 711 and the second side plate 712 are the main structural bodies of the movable part 71. They play the role of supporting and fixing other components in the movable part 71. The upper end and the lower end are fixedly connected by the tie rod 713 respectively. This connection method enables the first side plate 711 and the second side plate 712 to maintain a relatively stable positional relationship and form a solid frame structure. The tie rod 713 can be fixedly connected to the first side plate 711 and the second side plate 712 respectively by welding or bolting. The tie rod 713 plays the role of connecting the first side plate 711 and the second side plate 712 to ensure the structural stability of the entire movable part 71. The strength and rigidity of the tie rod 713 are crucial to the normal operation of the movable part 71. It needs to be able to withstand various forces and loads generated by the sling during operation. Horizontal guide pulleys 714 are respectively provided on the opposite sides of the first side plate 711 and the second side plate 712. These pulleys 22 play an important guiding role in the working process of the lifting device. The upper end and the lower end of the grabbing end of the lifting rod assembly 4 respectively extend the upper arm 421 and the lower arm 422 along the axial direction of the lifting rod assembly 4. The upper arm 421 and the lower arm 422 are respectively inserted between the pull rod 713 and the horizontal guide pulley 714. The lower surface of the upper arm 421 is against the horizontal guide pulley 714, and the upper surface of the lower arm 422 is against the horizontal guide pulley 714. Such a design enables the movable part 71 to slide relatively on the grabbing end of the lifting rod assembly 4. At the same time, the horizontal guide pulley 714 can ensure that the movement direction of the movable part 71 is always horizontal, thereby improving the stability and precision of the lifting device. The material of the horizontal guide pulley 714 usually has high wear resistance and low friction coefficient to reduce wear and energy loss during movement. Their installation positions and numbers are carefully designed to ensure that the movable portion 71 can move smoothly on the grabbing end of the lifting rod assembly 4 and can bear the weight of the object grabbed by the sling.

[0039] In this optional embodiment, multi-directional fine-tuning can be achieved through the cooperation of the movable part 71 and the horizontal guide pulley 714, allowing the operator to accurately locate the relative position of the sling and the grasped object. The rotation of the handwheel screw 73 can quickly drive the movable part 71 to move, thereby achieving rapid response, which can effectively improve the efficiency of the lifting operation. At the same time, the sling has strong adaptability and can quickly align the grasping position through the pulley assembly 7 in different working scenarios to adapt to various complex environments. In addition, the horizontal guide pulley 714 ensures that the movable part 71 moves stably during the alignment process, thereby improving the accuracy of the grasping position and the safety of lifting. Moreover, the handwheel screw 73 is designed to be easy to operate, which reduces the skill requirements of the operator and improves the usability of the sling.

[0040] like Figure 4 As shown, optionally, the pull rod 713 includes an upper pull rod 7131 and a lower pull rod 7132, the two ends of the upper pull rod 7131 are respectively fixedly connected to the upper ends of the first side plate 711 and the second side plate 712, the lower pull rod 7132 is respectively fixedly connected to the lower ends of the first side plate 711 and the second side plate 712, the upper arm 421 is passed through the upper pull rod 7131 and the horizontal guide pulley 714, the lower surface of the upper arm 421 is against the horizontal guide pulley 714, the lower arm 422 is passed through the lower pull rod 7132 and the horizontal guide pulley 714, the upper surface of the lower arm 422 is against the horizontal guide pulley 714.

[0041] Specifically, the upper pull rod 7131 is arranged at the upper end of the movable part 71, and the two ends of the upper pull rod 7131 are respectively fixedly connected to the upper ends of the first side plate 711 and the second side plate 712, so as to connect and reinforce the upper ends of the first side plate 711 and the second side plate 712, and ensure the stability of the upper end structure of the movable part 71. The strength and rigidity of the upper pull rod 7131 are crucial to maintain the stability of the entire movable part 71, and it needs to be able to withstand various forces and loads generated by the sling during operation. Similarly, the lower pull rod 7132 is arranged at the lower end of the movable part 71, and the two ends of the lower pull rod 7132 are respectively fixedly connected to the lower ends of the first side plate 711 and the second side plate 712, and the lower pull rod 7132 cooperates with the upper pull rod 7131 to jointly maintain the overall structural stability of the movable part 71. The lower pull rod 7132 also needs to have sufficient strength and rigidity to ensure that the lower end of the movable part 71 will not be deformed or loosened when the sling is working. The upper arm 421 at the grabbing end of the lifting rod assembly 4 is inserted between the upper pull rod 7131 and the horizontal guide pulley 714. This design allows the upper arm 421 to move relatively stably in the movable part 71. At the same time, the upper pull rod 7131 and the horizontal guide pulley 714 limit and guide the upper arm 421. The lower surface of the upper arm 421 abuts against the horizontal guide pulley 714, and the horizontal guide pulley 714 contacts the lower surface of the upper arm 421. On the one hand, the friction of the upper arm 421 during movement is reduced, so that the upper arm 421 can slide more smoothly in the movable part 71; on the other hand, the horizontal guide pulley 714 can ensure that the moving direction of the upper arm 421 always remains horizontal, thereby improving the positioning accuracy of the sling in the horizontal direction. Similarly, the lower arm 422 is inserted between the lower pull rod 7132 and the horizontal guide pulley 714. Similar to the upper arm 421, the position of the lower arm 422 in the movable part 71 is also restricted and guided by the lower pull rod 7132 and the horizontal guide pulley 714. The lower arm 422 also bears the role of partial lifting weight, and the stability of its position is indispensable for the safe operation of the sling. The upper surface of the lower arm 422 is against the horizontal guide pulley 714, and the horizontal guide pulley 714 contacts the upper surface of the lower arm 422, which also plays a role in reducing friction and ensuring the horizontal direction of movement. The cooperation between the lower pull rod 7132 and the horizontal guide pulley 714 enables the lower arm 422 to move stably in the movable part 71, thereby ensuring the stability and reliability of the sling during operation. Through the cooperation between the upper pull rod 7131, the lower pull rod 7132 and the horizontal guide pulley 714, as well as the upper arm 421 and the lower arm 422, the movable part 71 of the sling can achieve stable movement and precise positioning during operation, so that the grab assembly 5 can accurately lift the target object, thereby improving the working efficiency and safety of the sling.

[0042] like Figure 3 and Figure 4As shown, optionally, the grabbing end of the lifting rod assembly 4 also includes a vertical side arm 423 fixedly connected to the center line of the lower surface of the upper arm 421 and the upper surface of the lower arm 422, respectively, the screw nut 72 is fixedly connected to the first side plate 711, the handwheel screw 73 is passed through the screw nut 72, and the two ends of the handwheel screw 73 are respectively rotatably connected to the vertical side arm 423.

[0043] Specifically, the vertical side arms 423 are fixedly connected to the lower surface of the upper arm 421 and the midline of the upper surface of the lower arm 422, respectively, to form an H-shaped structure, connecting the upper arm 421 and the lower arm 422 in the vertical direction to form a more stable overall structure, thereby structurally enhancing the stability and strength of the grabbing end through the vertical side arms 423. During the hoisting process, the hoisting device will be subjected to greater gravity and external forces, and the vertical side arms 423 can effectively disperse these forces, reduce the risk of deformation of the upper arm 421 and the lower arm 422, and ensure that the grabbing end can stably grab objects. Secondly, fixing it at the midline position makes the force transmission more uniform. Since the vertical side arm 423 is connected at the midline of the upper arm 421 and the lower arm 422, when the sling grabs an object, gravity and external force can be more evenly distributed on the upper arm 421, the lower arm 422 and the vertical side arm 423, avoiding structural damage caused by excessive local force. At the same time, this uniform force transmission also helps to improve the grabbing accuracy and stability of the sling. The screw nut 72 is fixedly connected to the first side plate 711, thereby ensuring that the positions of the screw nut 72 and the sliding part are relatively fixed, that is, when the screw nut 72 moves on the screw, it will drive the sliding part to move together. The screw nut 72 can reliably transmit the rotational force of the handwheel screw 73 through the fixed connection. When the handwheel screw 73 is rotated, the screw nut 72 will move along the axial direction of the screw. Since it is fixedly connected to the first side plate 711, it can drive the movable part 71 and the grabbing assembly 5 fixedly connected to the movable part 71 to perform corresponding movements. The force transmission efficiency is guaranteed through a stable connection method, so that the operator can accurately control the position of the target object connected to the grabbing assembly 5. The handwheel screw 73 is inserted into the screw nut 72, and its two ends are respectively fixedly connected to the grabbing end of the lifting rod assembly 4. The handwheel screw 73 is one of the core components of the pulley assembly 7. It adjusts the position of the movable part 71 through the cooperation with the screw nut 72. The operator can rotate the handwheel screw 73 to move the screw nut 72 on the screw, thereby driving the movable part 71 to move along the axial direction of the lifting rod assembly 4. At the same time, the two ends of the handwheel screw 73 are rotatably connected to the vertical side arms 423 of the lifting rod assembly 4, ensuring that the position of the screw is relatively stable during operation and can rotate freely. The rotational connection can be achieved by setting bearings at both ends. The two ends of the handwheel screw 73 are respectively tightly combined with the inner ring of the bearing, so that the handwheel screw 73 can rotate freely in the bearing.

[0044] In this optional embodiment, the vertical side arm 423 connects the center line of the upper arm 421 and the lower arm 422, which enhances the structural stability of the grabbing end, can better withstand external forces, and reduces the risk of deformation and damage. At the same time, the force transmission efficiency is improved, so that the sling can grab and lift heavy objects more stably. The screw nut 72 is fixedly connected to the first side plate 711, and the handwheel screw 73 is passed through it and is rotatably connected to the vertical side arm 423, which is convenient for the operator to accurately control the position of the grabbing assembly 5, adapt to different lifting environments, and improve the lifting efficiency and operating accuracy of the sling. In addition, the stable structure and precise control enhance the safety of the sling and reduce the probability of accidents.

[0045] like Figure 1 and Figure 5 As shown, optionally, the lifting rod assembly 4 includes a middle lifting rod 41, a grabbing section lifting rod 42 and a counterweight section lifting rod 43, the grabbing end of the grabbing section lifting rod 42 is connected to the grabbing assembly 5, the other end of the grabbing section lifting rod 42 is fixedly connected to one end of the middle lifting rod 41, the other end of the middle lifting rod 41 is fixedly connected to one end of the counterweight section lifting rod 43, the counterweight end of the counterweight section lifting rod 43 is connected to the counterweight assembly 6, and the traction end 31 of the lifting device 3 is connected to the middle lifting rod 41

[0046] Specifically, the middle section lifting rod 41 plays a key role in connecting the upper and lower parts of the entire lifting rod assembly 4. One end of it is fixedly connected to the grabbing section lifting rod 42, and the other end is fixedly connected to the counterweight section lifting rod 43 to form a continuous lifting rod assembly 4. The middle section lifting rod 41 usually has a certain strength and rigidity to withstand the force from the grabbing section and the counterweight section and the traction force of the lifting device 3. Its length and shape will be designed according to specific usage requirements, not only to ensure a sufficient working range, but also to consider the stability during the lifting process. The middle section lifting rod 41 As the hub connecting the grabbing section and the counterweight section, it is responsible for transmitting force and torque. When the grabbing end of the grabbing section lifting rod 42 is connected to the grabbing assembly 5 and grabs the target object, the generated force is transmitted to the counterweight section lifting rod 43 through the middle section lifting rod 41, and then transmitted to the counterweight assembly 6 by the counterweight section lifting rod 43 to achieve force balance. At the same time, the middle section lifting rod 41 is also the point of action of the traction force of the lifting device 3, that is, the traction end 31 of the lifting device 3 is connected to the middle section lifting rod 41, and the lifting device 3 realizes the lifting movement of the entire hoist by pulling the middle section lifting rod 41.

[0047] The main function of the grabbing section lifting rod 42 is to connect the grabbing assembly 5 to achieve the grabbing of the object. The grabbing end is fixedly connected to the grabbing assembly 5 to ensure that it will not loosen or fall off during the lifting process. The length and shape of the grabbing section lifting rod 42 will be designed according to the specific grabbing requirements. For example, in the case of grabbing objects at a long distance, the grabbing section lifting rod 42 may be designed to be longer; and in the case of grabbing in a narrow space, the grabbing section lifting rod 42 may be designed to be shorter and more flexible in shape. The other end of the grabbing section lifting rod 42 is fixedly connected to the middle section lifting rod 41. This connection must ensure that the force can be transmitted stably during the lifting process and will not cause damage to the structure of the middle section lifting rod 41.

[0048] One end of the counterweight section lever 43 is fixedly connected to the middle section lever 41, and the counterweight end at the other end is connected to the counterweight assembly 6. The main function of the counterweight section lever 43 is to balance the weight of the object grasped by the grasping end by connecting to the counterweight assembly 6 to ensure the stability of the sling during operation. The length and strength of the counterweight section lever 43 need to be determined according to the weight of the grasped object and the working environment. Generally speaking, the heavier the grasped object, the greater the length and strength of the counterweight section lever 43. The design of the counterweight end should be able to easily install and adjust the counterweight assembly 6 to meet the grasping needs of objects of different weights.

[0049] In this optional embodiment, the grabbing section and the counterweight section lifting rod 43 are connected by the middle lifting rod 41, and combined with the connection with the counterweight assembly 6 and the connection between the lifting device 3 and the middle lifting rod 41, the lifting device is evenly stressed, the stability is improved, and the risk of shaking and tilting during the lifting process is reduced.

[0050] like Figure 1 As shown, optionally, the middle section lifting rod 41 also includes a first connecting member 413, and a first side arm 411 and a second side arm 412 extending horizontally along the radial direction of the middle section lifting rod 41, and the upper ends of the middle section lifting rod 41, the first side arm 411 and the second side arm 412 are respectively provided with lifting rings 414, and the lifting rings 414 are respectively connected to the traction end 31 of the lifting device 3 through the first connecting member 413.

[0051] Specifically, the first side arm 411 and the second side arm 412 extend horizontally along the radial direction of the middle section lifting rod 41, and their width can be set according to the actual lifting strength. If the lifting object is heavy, it can be appropriately widened to ensure that the middle section lifting rod 41 can meet the force strength requirements. The first side arm 411 and the second side arm 412 effectively increase the number of connection points between the middle section lifting rod 41 and the lifting device 3, so that the force can be more evenly distributed on the middle section lifting rod 41, reduce local stress concentration, and improve the stability and reliability of the structure. The upper ends of the first side arm 411 and the second side arm 412 are provided with lifting rings 414, which are connected to the traction end 31 of the lifting device 3 through the first connecting member 413, and the connecting member can be a metal chain or a steel cable. The setting of multiple lifting rings 414 increases the flexibility and reliability of the connection, ensures the effective transmission of force, and different connection points can be selected according to actual conditions to adapt to different working conditions and lifting requirements. At the same time, the existence of the side arm can also provide an installation position for other auxiliary equipment or devices, further expanding the function of the lifting device.

[0052] It should be noted that the lifting device 3 can be an electric hoist, hydraulic lift or other equipment, which controls the rise and fall of the sling by providing traction, and the connection with the middle lifting rod 41 must ensure sufficient firmness and reliability to withstand various forces and moments of the sling during the lifting process.

[0053] In this optional embodiment, the first side arm 411, the second side arm 412 and the lifting ring 414 provided on the middle lifting rod 41 are connected to the traction end 31 of the lifting device 3 through the first connecting member 413, so that the three lifting rings 414 are used as connection points, and the force from the traction end 31 can be dispersed to different positions. Compared with the single-point connection, the three-point connection disperses the force, reduces the risk of local stress concentration, and makes the force from the traction end 31 more evenly distributed on the middle lifting rod 41 and the side arm, reducing the possibility of structural deformation and damage. In addition, the three connection points can better maintain the balance of the sling, and the connection points can be adjusted according to the weight to ensure stability, reduce the risk of shaking and tilting, improve the anti-interference ability, and can jointly offset external interference forces, maintain a stable state, and improve lifting accuracy and reliability.

[0054] like Figure 1 As shown, optionally, the counterweight assembly 6 includes a second connecting member 61 and a hanging basket 62, one end of the second connecting member 61 is connected to the counterweight end of the lifting rod assembly 4, and the other end of the second connecting member 61 is connected to the hanging basket 62, and the lower surface of the hanging basket 62 is provided with casters 63.

[0055] Specifically, one end of the second connecting member 61 is tightly connected to the counterweight end of the lifting rod assembly 4 to ensure that the counterweight assembly 6 can be stably connected to the lifting rod assembly 4. This connection needs to have sufficient strength and reliability to withstand the various forces generated during the lifting process. The connecting member can be a metal chain or a steel cable, etc. The design of the hanging basket 62 needs to take into account the weight and volume of the counterweight, as well as the stability during the lifting process. Usually, the hanging basket 62 will be made of strong materials with sufficient strength and rigidity to prevent deformation or damage when carrying the counterweight. The hanging basket 62 is connected to the counterweight end of the lifting rod assembly 4 through the second connecting member 61, thereby ensuring that the hanging basket 62 will not fall off or shake during the lifting process. At the same time, it is also necessary to facilitate the installation and removal of the counterweight items. The position and structure of the connection point will be designed according to the actual lifting situation to ensure the balance and stability of the hanging basket 62. Casters 63 are provided on the lower surface of the hanging basket 62. The casters 63 can be universal wheels, which provide convenience for the movement and adjustment of the counterweight assembly 6. During the hoisting process, the casters 63 can also play a certain buffering role to reduce the friction and vibration between the hanging basket 62 and the ground.

[0056] like Figure 1 and Figure 3 As shown, optionally, the grabbing assembly 5 includes a grabbing base plate 51 and a connecting side plate 52, one side surface of the grabbing base plate 51 is fixedly connected to the grabbing end of the lifting rod assembly 4, the other side surface of the grabbing base plate 51 is fixedly connected to one end of the connecting side plate 52, and a grabbing through hole is provided on the side of the connecting side plate 52 away from the grabbing base plate 51, and the grabbing through hole is used to connect to the target object to be grabbed.

[0057] Specifically, the surface of one side of the grabbing base plate 51 is fixedly connected to the grabbing end of the lifting rod assembly 4, so as to ensure that the grabbing assembly 5 will not be separated from the lifting rod assembly 4 during the lifting process. The fixed connection method can be welding, bolt connection, etc., depending on the design requirements and use environment of the lifting device. The surface of the other side of the grabbing base plate 51 carries the connecting side plate 52 and the part connected to the workpiece. During the lifting process, the grabbing base plate 51 needs to withstand the gravity from the workpiece and other external forces, so it usually needs to be made of high-strength materials with sufficient thickness and rigidity to ensure that it will not be deformed or damaged during the working process. One end of the connecting side plate 52 is fixedly connected to the surface of the other side of the grabbing base plate 51 to form a stable structure. The connecting side plate 52 usually has a certain height and thickness to provide sufficient strength and rigidity. Its shape and size can be designed according to different grabbing requirements to adapt to workpieces of different shapes and sizes. A grabbing through hole is provided on the side of the connecting side plate 52 away from the grabbing base plate 51. This through hole is a key part for connecting with the target object to be grabbed. The shape and size of the grabbing through hole can be designed according to the characteristics of the workpiece. For example, a round workpiece can be designed as a round through hole, and a square workpiece can be designed as a square through hole. By inserting a part of the workpiece into the grabbing through hole, or using other connecting devices to pass through the grabbing through hole and connect with the workpiece, stable grabbing of the workpiece can be achieved.

[0058] 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 technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0059] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A balancing sling, characterized in that: The invention comprises a ring hanging assembly (1), a rotating device (2), a lifting device (3), a lifting rod assembly (4), a grabbing assembly (5) and a counterweight assembly (6), wherein the ring hanging assembly (1) comprises an annular track (11), the rotating device (2) is slidably connected to the annular track (11), the lower end of the rotating device (2) is fixedly connected to the lifting device (3), the traction end (31) of the lifting device (3) is connected to the lifting rod assembly (4), the grabbing end of the lifting rod assembly (4) is connected to the grabbing assembly (5), and the counterweight end of the lifting rod assembly (4) is connected to the counterweight assembly (6).

2. The balancing sling according to claim 1, characterized in that: The rotating device (2) comprises a power mechanism (21), a pulley (22) and a support structure (23); the support structure (23) is suspended on the annular track (11) via the pulley (22); the axle of the pulley (22) is connected to the support structure (23); the power mechanism (21) is used to drive the pulley (22) to rotate; and the lower end of the support structure (23) is fixedly connected to the lifting device (3).

3. The balancing sling according to claim 1, characterized in that: The utility model also comprises a pulley assembly (7), wherein the pulley assembly (7) comprises a movable part (71), a screw nut (72) and a handwheel screw (73); the movable part (71) is movably connected to the grabbing end of the lifting rod assembly (4); the screw nut (72) is fixedly connected to the movable part (71); the handwheel screw (73) is passed through the screw nut (72); and the handwheel screw (73) is fixedly connected to the grabbing end of the lifting rod assembly (4); and the grabbing assembly (5) is mounted on the movable part (71).

4. The balancing sling according to claim 3, characterized in that: The movable part (71) includes a first side plate (711), a second side plate (712), and a pull rod (713); the upper end and the lower end of the first side plate (711) and the second side plate (712) are respectively fixedly connected by the pull rod (713); the opposite sides of the first side plate (711) and the second side plate (712) are respectively provided with horizontal guide pulleys (714); the grabbing end of the lifting rod assembly (4) includes an upper arm (421) and a lower arm (422) respectively extending along the axial direction of the lifting rod assembly (4); the upper arm (421) and the lower arm (422) are respectively inserted between the pull rod (713) and the horizontal guide pulley (714); the lower surface of the upper arm (421) is against the horizontal guide pulley (714); the upper surface of the lower arm (422) is against the horizontal guide pulley (714); 5. The balancing sling according to claim 4, characterized in that: The pull rod (713) includes an upper pull rod (7131) and a lower pull rod (7132), the two ends of the upper pull rod (7131) are respectively fixedly connected to the upper ends of the first side plate (711) and the second side plate (712), the lower pull rod (7132) is respectively fixedly connected to the lower ends of the first side plate (711) and the second side plate (712), the upper arm (421) is passed through between the upper pull rod (7131) and the horizontal guide pulley (714), the lower surface of the upper arm (421) is against the horizontal guide pulley (714), the lower arm (422) is passed through between the lower pull rod (7132) and the horizontal guide pulley (714), the upper surface of the lower arm (422) is against the horizontal guide pulley (714).

6. The balancing sling according to claim 4, characterized in that: The grabbing end of the lifting rod assembly (4) also includes a vertical side arm (423) fixedly connected to the center line of the lower surface of the upper arm (421) and the upper surface of the lower arm (422), respectively; the screw nut (72) is fixedly connected to the first side plate (711); the handwheel screw (73) is passed through the screw nut (72); and the two ends of the handwheel screw (73) are respectively rotatably connected to the vertical side arm (423).

7. The balancing sling according to claim 1, characterized in that: The lifting rod assembly (4) comprises a middle lifting rod (41), a grabbing section lifting rod (42) and a counterweight section lifting rod (43); the grabbing end of the grabbing section lifting rod (42) is connected to the grabbing assembly (5); the other end of the grabbing section lifting rod (42) is fixedly connected to one end of the middle lifting rod (41); the other end of the middle lifting rod (41) is fixedly connected to one end of the counterweight section lifting rod (43); the counterweight end of the counterweight section lifting rod (43) is connected to the counterweight assembly (6); and the traction end (31) of the lifting device (3) is connected to the middle lifting rod (41).

8. The balancing sling according to claim 7, characterized in that: The middle lifting rod (41) further comprises a first connecting member (413), and a first side arm (411) and a second side arm (412) extending horizontally along the radial direction of the middle lifting rod (41); the upper ends of the middle lifting rod (41), the first side arm (411) and the second side arm (412) are respectively provided with lifting rings (414); and the lifting rings (414) are respectively connected to the traction end (31) of the lifting device (3) through the first connecting member (413).

9. The balancing sling according to claim 1, characterized in that: The counterweight assembly (6) comprises a second connecting member (61) and a hanging basket (62), one end of the second connecting member (61) is connected to the counterweight end of the lifting rod assembly (4), and the other end of the second connecting member (61) is connected to the hanging basket (62), and the lower surface of the hanging basket (62) is provided with casters (63).

10. The balancing sling according to claim 1, characterized in that: The grabbing assembly (5) comprises a grabbing base plate (51) and a connecting side plate (52), one side surface of the grabbing base plate (51) is fixedly connected to the grabbing end of the lifting rod assembly (4), the other side surface of the grabbing base plate (51) is fixedly connected to one end of the connecting side plate (52), and a grabbing through hole is provided on a side of the connecting side plate (52) away from the grabbing base plate (51), and the grabbing through hole is used to connect to a target object to be grabbed.

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