Suspension arm of shifting machine and shifting machine

Abstract

The utility model discloses a suspension arm of a shifting machine and the shifting machine, belongs to the field of shifting machines, solves the problem that the manufacturing cost of the suspension arm is high due to the fact that the bending processing technology of the suspension arm is complex, and adopts the technical scheme that the suspension arm mainly comprises a rod-shaped main body and two suspension cable connecting parts, the rod-shaped main body is provided with two receiving ends which are far away from each other, and the suspension cable connecting parts are arranged on the rod-shaped main body; the two sling connecting parts are connected to the two receiving ends respectively, the sling connecting parts are of bent structures or form included angles with the rod-shaped main body, and the rod-shaped main body and the two sling connecting parts form a suspension arm of a split structure. According to the utility model, the suspension arm is of a split structure and is bent by the sling connecting part, so that the manufacturing process of the suspension arm can be simplified, and the manufacturing cost of the suspension arm is reduced.

Description

A crane arm and a transfer machine Technical Field

[0001] This utility model illustrates a boom and a transfer machine for a transfer machine, belonging to the technical field of transfer machines. Background Technology

[0002] Rail-mounted lifting systems are primarily used to address the mobility, toileting, and bathing needs of the elderly, those with mobility issues, and those unable to walk. They are widely applicable in hospitals, nursing homes, rehabilitation centers, and homes. Rail-mounted lifting systems are mainly nursing devices designed to assist disabled individuals with barrier-free movement, used for short-distance relocation and rehabilitation care for disabled individuals or patients.

[0003] A rail-mounted lifting system typically includes a rail, a trolley that slides along the rail, a main unit suspended from the trolley, and a boom that is driven to lift by the main unit. The main unit contains a winch with a traction belt wound around it. The traction belt is connected to the boom. The motor inside the main unit drives the winch to rotate and controls the release and retraction of the traction belt, thereby realizing the lowering and raising of the boom.

[0004] To ensure a more stable suspension of people or other heavy objects by the boom, sling connection components are typically installed at both ends of the boom, and these components are bent. However, in the existing technology, the sling connection components are usually an integral part of the boom. To make the sling connection components bend, both ends of the boom need to be bent. The bending process of the boom is quite complex, which affects the production efficiency of the boom and increases its manufacturing cost. Summary of the Invention

[0005] The purpose of this utility model is to solve the problem that the bending process of the boom is relatively complex, resulting in high manufacturing cost of the boom. To this end, a boom and a boom of a shifting machine are provided. The boom has a split structure and is bent by a sling connection component, which can simplify the manufacturing process of the boom and reduce the manufacturing cost of the boom.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0007] A lifting mechanism boom includes a rod-shaped body and two cable connecting parts. The rod-shaped body has two receiving ends that are far apart from each other. The two cable connecting parts are respectively connected to the two receiving ends. The cable connecting parts have a curved structure or form an angle with the rod-shaped body. The rod-shaped body and the two cable connecting parts form a split structure boom.

[0008] The beneficial effects of using this utility model are:

[0009] The boom described in this invention is a split mechanism, consisting of a rod-shaped main body and sling connection components. By manufacturing the sling connection components as a curved structure or by connecting them to the rod-shaped main body at an angle, and by using injection molding or other methods to create the curved structure, the boom does not require bending, thus eliminating the need for bending processes, simplifying the boom manufacturing process, significantly improving manufacturing efficiency, increasing production volume, and reducing manufacturing costs. Furthermore, when the boom is under load, the sling connection components suspend the slings, which automatically slide towards the lowest position of the sling connection components under gravity, ensuring stable suspension. This allows for stable movement of the user during boom transfers, improving the user experience. Additionally, when both slings are at their lowest positions relative to the boom, they are symmetrical, further enhancing the load distribution on the boom. Balance ensures the boom remains level, preventing tilting due to unbalanced forces and improving operational safety. Furthermore, dividing the boom into two modules—the main body and the sling connection components—means that when either module is damaged or worn, only the damaged part needs replacement, eliminating the need to replace the entire boom. This significantly reduces maintenance costs. Modular design also effectively shortens replacement and repair time for the main body and sling connection components, improving efficiency. Moreover, modular design allows the boom to be assembled from various specifications of main bodies and sling connection components. Users can flexibly adjust the specifications of the sling connection components according to actual usage scenarios, such as replacing them with sling connection components of different load capacities or main bodies of different lengths to suit available space. This allows the boom to be used in more extreme environments, enhancing its versatility and adaptability to complex conditions.

[0010] Preferably, the angle between the sling connection component and the rod-shaped main body is an obtuse angle. Using the aforementioned technical solution, the bending degree of the sling connection component is relatively gentle. During the process of the sling sliding to the lowest position of the sling connection component under the action of gravity, the total height of the sling descent is small, which can effectively reduce the feeling of falling felt by the user and help improve the user experience.

[0011] Preferably, the receiving end has a receiving end face, and the sling connection component includes a docking end with a docking end face. The receiving end face and the docking end face are fitted together with their outer contours aligned. By adopting the aforementioned technical solution, the alignment of the outer peripheral contours of the receiving end face and the docking end face allows for a smooth transition between the rod-shaped body and the outer peripheral side of the sling connection component, making the connection between the rod-shaped body and the sling connection component more complete and improving the aesthetics of the boom. Furthermore, the receiving end face and the docking end face also increase the contact area between the sling connection component and the rod-shaped body, providing a certain degree of support and reducing the possibility of deformation or bending of the sling connection component, while also improving the load-bearing capacity of the sling connection component.

[0012] Preferably, the extension direction of the rod-shaped main body is linear, and the extension direction of the mating end is parallel to the extension direction of the rod-shaped main body. By adopting the aforementioned technical solution, the resistance experienced by the mating end during connection can be reduced, making the connection between the mating end and the rod-shaped main body smoother and helping to improve the connection efficiency of the mating end.

[0013] Preferably, the sling connection component includes a free end away from the rod-shaped main body, and the outer peripheral side of the rod-shaped main body smoothly transitions from the outer contour of the mating end face to the free end. By adopting the aforementioned technical solution, since the outer contour of the mating end face aligns and fits with the outer contour of the receiving end face, and the outer contour of the mating end face smoothly transitions to the free end, the appearance of the rod-shaped main body and the sling connection component is more complete, which helps improve the aesthetics of the boom; at the same time, it also makes the overall outer surface of the boom smoother, reducing the likelihood of a chafing sensation during use and improving the user experience.

[0014] Preferably, when the boom is under load, the sling connection component extends downward relative to the rod-shaped body in the direction away from the receiving end. Using the aforementioned technical solution, the lowest point of the sling connection component is located at the end of the sling connection component away from the rod-shaped body. When the boom is under load, the two slings will be at their furthest ends of the boom, thereby increasing the distance between the two slings, increasing the inclination of the slings, and generating a larger horizontal component force on the slings. This reduces the force of gravity on the sling connection component, thereby increasing the maximum load capacity of the boom. Furthermore, the downward extension of the sling connection component away from the rod-shaped body can position the slings, limiting their movement towards the rod-shaped body due to the load.

[0015] Preferably, the sling connection component includes a plug and a hook, and the mating end is provided with a slot for the plug to be inserted into, and the plug is locked in the slot to realize the connection between the sling connection component and the rod-shaped body.

[0016] Preferably, the rod-shaped body is detachably connected to the plug-in part via fasteners. The outer surface of the rod-shaped body has a groove and a cover plate for sealing the groove. The groove has a mounting hole communicating with the slot. The fastener passes through the mounting hole and is threadedly connected to the plug-in part. After the groove is connected, the outer surface of the cover plate forms part of the outer surface of the rod-shaped body. Using the aforementioned technical solution, the cover plate can seal the groove, effectively preventing dust, moisture, or other debris from entering the threaded connection. This effectively delays the corrosion of the fasteners or threaded holes, making the disassembly of the fasteners smoother and less prone to jamming, thus facilitating the disassembly and installation of the sling connection components. Furthermore, after the cover plate is closed, its outer surface becomes part of the outer surface of the rod-shaped body, allowing for a smooth transition between the cover plate and the outer surface of the rod-shaped body. This prevents the fasteners from being directly exposed, making the overall appearance of the boom more complete and improving its aesthetics.

[0017] Preferably, the hook includes a hook body and a locking plate that can rotate relative to the hook body. The insertion part is provided with a mounting groove, and one end of the locking plate is embedded in the mounting groove and forms a rotatable connection with the insertion part. When the insertion part is inserted into the slot, the inner wall of the slot closes the mounting groove to prevent the locking plate from disengaging from the mounting groove. Using the aforementioned technical solution, the locking plate and hook body also adopt a separate structure. After the locking plate and hook body are connected, the hinge between the locking plate and hook body is achieved through the restriction of the slot. This makes the manufacturing process of the hook body simpler and facilitates the design of a curved structure, further reducing the manufacturing cost of the boom. Furthermore, when the hook is removed from the rod-shaped body, the locking plate can be easily removed. Therefore, when the locking plate is damaged, only the locking plate needs to be replaced, without replacing the entire hook, which significantly reduces the maintenance cost of the hook.

[0018] This utility model also discloses a transfer machine, including a main unit and a boom. The main unit drives the boom to rise and fall via a traction rope. The boom is the boom of the transfer machine as described in any of the above.

[0019] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 is a schematic diagram of the boom structure in Embodiment 1 of this utility model;

[0022] Figure 2 is an exploded view of the rod-shaped main body and the sling connection component in Embodiment 1 of this utility model;

[0023] Figure 3 is a partial cross-sectional view of the boom in Embodiment 1 of this utility model;

[0024] Figure 4 is a structural schematic diagram of the sling connection component in Embodiment 1 of this utility model;

[0025] Figure 5 is a schematic diagram of the boom and cover plate in Embodiment 1 of this utility model;

[0026] Figure 6 is a structural schematic diagram of Embodiment 2 of this utility model.

[0027] Reference numerals: 10. Boom; 101. Suspension part; 1. Rod-shaped body; 11. Slot; 12. Groove; 121. Slot; 122. Positioning hole; 123. Mounting hole; 13. Receiving end face; 2. Sling connection part; 21. Insertion part; 211. Threaded hole; 212. Mounting groove; 213. Shaft hole; 214. Clearance hole; 22. Hook; 221. Hook body; 222. Locking plate; 223. Hinge part; 224. Rotating shaft; 225. Positioning protrusion; 226. Positioning groove; 227. Reset part; 23. Mud docking end face; 3. Cover plate; 31. Buckle; 32. Positioning pin; 4. Fastener; 5. Main unit; 6. Trolley; 7. Track. Detailed Implementation

[0028] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1:

[0032] As shown in Figures 1 to 5, this embodiment illustrates a boom 10 of a transfer machine, including a rod-shaped body 1 and two sling connection components 2. The rod-shaped body 1 has two receiving ends that are far apart from each other. The two sling connection components 2 are respectively connected to the two receiving ends. The sling connection components 2 have a curved structure or form an angle with the rod-shaped body 1. The rod-shaped body 1 and the two sling connection components 2 form a boom 10 with a split structure.

[0033] In this embodiment, the boom 10 is a split mechanism, consisting of a rod-shaped main body 1 and a sling connection component 2. The sling connection component 2 can be manufactured into a curved structure, or connected to the rod-shaped main body 1 at an angle. The sling connection component 2 can be manufactured into a curved structure through injection molding or other methods, eliminating the need for bending the boom 10. This simplifies the manufacturing process, significantly improves the production efficiency of the boom 10, increases its output, and reduces its manufacturing cost. Furthermore, when the boom 10 is under load, the sling connection component 2 suspends the slings. Under the influence of gravity, the slings automatically slide towards the lowest position of the sling connection component 2, and are positioned at this lowest point. This ensures stable sling suspension, allowing the user to remain stable during the transfer of a person, thus improving the user experience. Secondly, when both slings are at their lowest positions on both sling connection components 2, they are symmetrical relative to the boom 10, making the force distribution on the boom 10 more even. The modular design ensures the boom 10 remains level, preventing tilting due to unbalanced forces and improving its operational safety. Furthermore, dividing the boom 10 into two modules—the rod-shaped main body 1 and the sling connection component 2—means that when either the rod-shaped main body 1 or the sling connection component 2 is damaged or worn, only the damaged component needs to be replaced, eliminating the need to replace the entire boom 10. This significantly reduces maintenance costs. The modular design also effectively shortens replacement and maintenance time for either the rod-shaped main body 1 or the sling connection component 2, improving efficiency. Moreover, the modular design allows the boom 10 to be assembled from various specifications of rod-shaped main bodies 1 and sling connection components 2. Users can flexibly adjust the specifications of the sling connection component 2 according to actual usage scenarios, such as replacing it with a sling connection component 2 with one of different load-bearing capacities or a rod-shaped main body 1 of different lengths to suit different space requirements. This allows the boom 10 to be used in more extreme scenarios, effectively enhancing its versatility and adaptability to complex environments.

[0034] As shown in Figures 2 and 3, the main body of the rod-shaped body 1 in this embodiment is generally elongated. A suspension part 101 is provided in the middle of the rod-shaped body 1. The rod-shaped body 1 is suspended from the host machine 5 of the transfer machine via the suspension part 101. When the rod-shaped body 1 is connected to the host machine 5, the center of gravity of the rod-shaped body 1 is located below the suspension part 101, thus keeping the rod-shaped body 1 horizontal. Both ends of the rod-shaped body 1 are receiving ends, each with a slot 11. The slot 11 is formed by a groove 12 along the length of the rod-shaped body 1 at the end of the rod-shaped body 1. A mating end face 23 is formed at the edge of the groove 12 at the receiving end. The sling connection component 2 has a mating end, which provides the mating end face 23. When the sling connection... After the connecting component 2 is connected to the rod-shaped body 1, the receiving end face 13 and the docking end face 23 are aligned with each other in a way that their outer contours are aligned. The alignment of the outer peripheral contours of the receiving end face 13 and the docking end face 23 can make the outer peripheral side of the rod-shaped body 1 and the sling connecting component 2 transition smoothly, making the connection between the rod-shaped body 1 and the sling connecting component 2 more complete and helping to improve the aesthetics of the boom 10. In addition, the receiving end face 13 and the docking end face 23 can also increase the contact area between the sling connecting component 2 and the rod-shaped body 1, providing a certain support function, which can reduce the possibility of deformation or bending of the sling connecting component 2, and at the same time improve the load-bearing capacity of the sling connecting component 2.

[0035] As shown in Figure 3, in this embodiment, the angle between the sling connection component 2 and the rod-shaped main body 1 is an obtuse angle. Referring to angle A in Figure 3, the curvature of the sling connection component 2 is relatively gentle. During the process of the sling sliding to the lowest position of the sling connection component 2 under the action of gravity, the total height of the sling descent is small, which can effectively reduce the feeling of falling felt by the human body and help improve the user experience.

[0036] In this embodiment, the extension direction of the rod-shaped body 1 is linear, and the extension direction of the docking end is parallel to the extension direction of the rod-shaped body 1. The sling connection component 2 includes a free end away from the rod-shaped body 1. The sling connection component 2 gradually moves away from the extension direction of the rod-shaped body 1 as it approaches the free end, that is, the sling connection component 2 has a curved structure and bends downward relative to the rod-shaped body 1. The docking end is parallel to the extension direction of the rod-shaped body 1, which can reduce the resistance encountered by the docking end during connection, making the connection between the docking end and the rod-shaped body 1 smoother and helping to improve the connection efficiency of the docking end. During use, the boom 10 fixes the two sling connection components 2 to the two receiving ends of the rod-shaped body 1, and then... Slings are suspended from the sling connection component 2. The human body or heavy object to be moved is suspended by the two slings. Since the sling connection component 2 gradually extends downwards as it approaches the free end, the free end is the lowest position of the sling connection component 2. When the boom 10 is under load, the two slings will be at the farthest ends of the boom 10, thereby increasing the distance between the two slings and increasing the inclination of the slings. The slings will generate a larger horizontal component force, reducing the force in the direction of gravity on the sling connection component 2, thereby increasing the maximum load capacity of the boom 10. In addition, the sling connection component 2 extends downwards away from the rod-shaped body 1, which can play a positioning role for the slings and limit the movement of the slings towards the rod-shaped body 1 due to the load.

[0037] As shown in Figure 1, in this embodiment, the outer periphery of the rod-shaped body 1 smoothly transitions from the outer contour of the docking end face 23 to the free end. Since the outer contour of the docking end face 23 is aligned and fits the outer contour of the receiving end face 13, and the outer contour of the docking end face 23 smoothly transitions to the free end, the appearance of the rod-shaped body 1 and the sling connection component 2 is more complete, which helps to improve the aesthetics of the boom 10. At the same time, it can also make the overall outer surface of the boom 10 smoother, and it is less likely to cause a hand-grip sensation during use, which helps to improve the user experience.

[0038] As shown in Figures 2 and 3, the sling connection component 2 in this embodiment includes a plug-in part 21 and a hook 22. The mating end is provided with a slot 11 for the plug-in part 21 to be inserted into. The plug-in part 21 is locked into the slot 11 to realize the connection between the sling connection component 2 and the rod-shaped body 1. It should be noted that in this embodiment, the rod-shaped body 1 is detachably connected to the plug-in part 21 by a fastener 4. The surface of the rod-shaped body 1 is provided with a mounting hole 123 communicating with the slot 11. The mating end is provided with a threaded hole 211 corresponding to the mounting hole 123. The fastener 4 passes through the mounting hole 123 and is threadedly connected to the threaded hole 211 to realize the connection between the sling connection component 2 and the rod-shaped body 1. The detachable connection between the rod-shaped body 1 and the sling connection component 2, and the threaded connection between the fastener 4 and the plug-in part 21, can improve the connection strength between the fastener 4 and the plug-in part 21, reduce the possibility of the plug-in part 21 disengaging from the slot 11, and help improve the connection stability between the rod-shaped body 1 and the sling connection component 2, making the use of the boom 10 safer and more reliable. In addition, the fastener 4 itself has high strength and is not easily damaged or broken, making the connection between the rod-shaped body 1 and the sling connection component 2 more secure and reliable. At the same time, it can also facilitate the replacement of the fastener 4, which helps to reduce the replacement cost of the fastener 4.

[0039] It should be noted that, in this embodiment, at least two mounting holes 123 and threaded holes 211 are provided, and the number of fasteners 4 is the same as the number of threaded holes 211. By fixing the plug-in part 21 with two fasteners 4, the possibility of the plug-in part 21 shaking can be reduced, and the connection stability between the plug-in part 21 and the rod-shaped body 1 can be significantly improved.

[0040] As shown in Figures 2 and 4, in this embodiment, the outer diameter of the insertion part 21 is smaller than the outer diameter of the hook 22. The mating end face 23 is formed at the connection between the insertion part 21 and the hook 22. When the insertion part 21 is fully inserted into the slot 11, the receiving end face 13 will abut against the mating end face 23, thereby indicating to the user that the sling connection component 2 has been inserted into place. It should be noted that in this embodiment, the cross-sections of the slot 11 and the insertion part 21 are both circular. After the insertion part 21 is inserted into the slot 11, the insertion part 21 can rotate relative to the slot 11. When the plug part 21 is inserted into place, the user can rotate the sling connection part 2 to keep the mounting hole 123 aligned with the threaded hole 211. Of course, it is understood that in other embodiments, the cross-section of the slot 11 may also be non-circular, and the corresponding cross-section of the plug part 21 corresponds to the cross-section of the slot 11, that is, the outer peripheral side of the plug part 21 is in contact with the inner wall of the slot 11. Since the plug part 21 and the slot 11 achieve a non-circular fit, the mounting hole 123 can be aligned with the threaded hole 211 after the plug part 21 is inserted into place.

[0041] In addition, in this embodiment, the receiving end face 13 and the docking end face 23 are fitted together by aligning with the outer peripheral contour, which can make the outer peripheral side of the rod-shaped body 1 and the sling connection component 2 transition smoothly, making the connection between the rod-shaped body 1 and the sling connection component 2 more complete and helping to improve the aesthetics of the boom 10. In addition, the receiving end face 13 and the docking end face 23 can also increase the contact area between the sling connection component 2 and the rod-shaped body 1, providing a certain support function, which can reduce the possibility of deformation or bending of the sling connection component 2, and at the same time improve the load-bearing capacity of the sling connection component 2.

[0042] In addition, to reduce the swaying amplitude after the sling connection component 2 is connected to the rod-shaped body 1, the insertion part 21 in this embodiment can form an interference fit with the inner wall of the slot 11, so that the insertion part 21 can keep in close contact with the inner wall of the slot 11, thereby preventing the sling connection component 2 from swaying radially along the rod-shaped body 1, and making the connection between the sling connection component 2 and the rod-shaped body 1 tighter; in addition, the interference fit between the insertion part 21 and the inner wall of the slot 11 can also increase the friction between the insertion part 21 and the slot 11, reduce the possibility of the insertion part 21 disengaging from the slot 11, and make the connection between the sling connection component 2 and the rod-shaped body 1 more firm and reliable.

[0043] It is understandable that in other embodiments, the plug-in part 21 can also be detachably connected by a snap-fit ​​method. The slot 11 is provided with a snap-fit ​​member that snaps into the plug-in part 21. The plug-in part 21 is provided with a fastening member. The snap-fit ​​member can be operably moved to snap into or separate from the fastening member. The snap-fit ​​member and the fastening member achieve the connection between the plug-in part 21 and the rod-shaped body 1 through snap-fit ​​cooperation. This can simplify the installation and disassembly process of the plug-in part 21 and the rod-shaped body 1, making the installation and disassembly of the plug-in part 21 simpler and faster, and helping to improve the replacement efficiency of the sling connection component 2.

[0044] As shown in Figure 5, the rod-shaped body 1 in this embodiment is provided with a groove 12, and the mounting hole 123 is provided in the groove 12. The rod-shaped body 1 is provided with a cover plate 3 that is detachably connected to the groove 12. The outer surface of the cover plate 3 after being connected to the groove 12 serves as part of the outer peripheral side of the rod-shaped body 1. The cover plate 3 can seal the groove 12, effectively preventing dust, moisture or other debris from entering the threaded connection. This can effectively delay the corrosion of the fastener 4 or the threaded hole 211, making the disassembly of the fastener 4 smoother and less prone to jamming, thus facilitating the disassembly and installation of the sling connection component 2. In addition, after the cover plate 3 is closed, the outer surface of the cover plate 3 serves as part of the outer peripheral side of the rod-shaped body 1, making the cover plate 3 and the outer peripheral side of the rod-shaped body 1 smoothly transition, preventing the fastener 4 from being directly exposed, making the overall appearance of the boom 10 more complete, and helping to improve the aesthetics of the boom 10.

[0045] As shown in Figure 5, the cover plate 3 in this embodiment includes a pair of buckles 31 and a pair of positioning pins 32. The groove 12 is provided with two slots 121 that engage with the buckles 31 and two positioning holes 122 into which the positioning pins 32 extend. The two slots 121 are distributed at both ends of the groove 12 along the length of the rod-shaped body 1, that is, one slot 121 is close to the sling connection component 2 and the other slot 121 is away from the sling connection component 2. The two fasteners 4 are located between the two slots 121. Since the mating end is basically in contact with the inner wall of the slot 11, the slot 121 close to the sling connection component 2 will be blocked by the mating end. In order for the buckles 31 to engage smoothly with the slots 121, the mating end is provided with a clearance groove for avoiding the buckles 31. The cooperation between the positioning holes 122 and the positioning pins 32 can guide the installation of the cover plate 3, which helps to reduce the installation difficulty of the cover plate 3 and improve the assembly efficiency of the boom 10.

[0046] As shown in Figures 3 and 4, the hook 22 in this embodiment includes a hook body 221 and a locking plate 222. The hook body 221 is bent downwards and an opening is formed at the top of the hook body 221 near the mating end. The locking plate 222 can be operably rotated to open or close the opening. The locking plate 222 is elastically loaded by the reset member 227 to maintain the tendency to close the opening. The locking plate 222 includes a hinge portion 223, and rotating shafts 224 are fixed on both sides of the hinge portion 223. The top of the mating end is provided with an upward... The open mounting groove 212 and the shaft hole 213 communicating with the mounting groove 212 are provided. The hinge portion 223 of the locking plate 222 is embedded in the mounting groove 212 and hinged to the mating end. When the mating end is inserted into the rod-shaped body 1, since the mating end is in contact with the inner wall of the slot 11, the inner wall of the slot 11 will abut against the hinge portion 223 and restrict the hinge portion 223 from disengaging from the mounting groove 212. In this embodiment, the hook body 221 of the hook 22 is bent downward and the opening is provided in the hook body 221. At the top, when the boom 10 suspends a heavy object, the sling is first suspended inside the hook body 221. Under the action of gravity, the sling will automatically slide to the lowest position inside the hook body 221, ensuring that the carrier of the suspended heavy object is away from the opening of the hook body 221, preventing the carrier of the suspended heavy object from arbitrarily detaching from the hook body 221 due to accidental factors, which helps to improve the safety of the hook 22. In addition, the locking plate 222 and the hook body 221 also adopt a split structure. After the locking plate 222 is connected to the hook body 221, the locking plate 222 and the hook body 221 are hinged by the slot 11, which makes the manufacturing process of the hook body 221 simpler and easier to design as a curved structure, which can further reduce the manufacturing cost of the boom 10. In addition, when the hook 22 is removed from the rod-shaped body 1, the locking plate 222 can be easily removed. Therefore, when the locking plate 222 is damaged, only the locking plate 222 needs to be replaced, without replacing the entire hook 22, which can significantly reduce the maintenance cost of the hook 22.

[0047] In addition, to enable the locking plate 222 to rotate normally, the end of the hinge portion 223 away from the locking plate 222 in this embodiment is provided with a clearance structure. The locking plate 222 is elastically loaded by the reset member 227 when it is not subjected to external force. At this time, the hinge portion 223 of the locking plate 222 is in contact with the inner wall of the slot 11. When it is necessary to open the hook 22, the locking plate 222 is pressed down to rotate the locking plate 222, and the end of the hinge portion 223 away from the locking plate 222 will rotate upward accordingly. The clearance structure can make a gap between the end of the hinge portion 223 and the inner wall of the slot 11, so that the end of the hinge portion 223 can rotate upward, thereby increasing the rotation angle of the locking plate 222 and ensuring that the hook 22 can be opened.

[0048] As shown in Figure 3, in this embodiment, the bottom of the locking plate 222 is provided with a positioning protrusion 225, the hook body 221 is provided with a positioning groove 226, one end of the reset member 227 is positioned in the positioning protrusion 225, and the other end is positioned in the positioning groove 226. The reset member 227 acts on the locking plate 222, causing the locking plate 222 to have an upward rotational tendency. Both the positioning protrusion 225 and the positioning groove 226 can position the reset member 227, ensuring that the reset member 227 will not shift or generate lateral force during compression and release, so that the rotation of the locking plate 222 can remain smooth and effortless.

[0049] Example 2:

[0050] As shown in Figure 6, this embodiment also illustrates a transfer machine, including a main unit 5 and a boom 10. The main unit 5 drives the boom 10 to rise and fall through a bearing component. The boom 10 is the boom 10 of the transfer machine described in Embodiment 1.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A boom for a shifting machine, characterized in that, It includes a rod-shaped main body and two sling connection components. The rod-shaped main body has two receiving ends that are far apart from each other. The two sling connection components are respectively connected to the two receiving ends. The sling connection components have a curved structure or form an angle with the rod-shaped main body. The rod-shaped main body and the two sling connection components form a split structure boom.

2. A jib arm for a shift machine according to claim 1, wherein, The angle between the sling connection component and the rod-shaped main body is an obtuse angle.

3. The boom of a shifting machine according to claim 1, characterized in that, The receiving end has a receiving end face, and the sling connection component includes a docking end, which has a docking end face. The receiving end face and the docking end face are fitted together in a manner that aligns their outer contours.

4. The boom of a shifting machine according to claim 3, characterized in that, The rod-shaped main body extends linearly, and the extension direction of the mating end is parallel to the extension direction of the rod-shaped main body.

5. A jib arm for a shift machine according to claim 3, wherein, The sling connection component includes a free end away from the rod-shaped body, and the outer peripheral side of the rod-shaped body smoothly transitions from the outer contour of the mating end face to the free end.

6. The boom of a shifting machine according to claim 1, characterized in that, When the boom is under load, the sling connection component extends downward relative to the rod-shaped body in a direction away from the receiving end.

7. The boom of a shifting machine according to claim 1, characterized in that, The sling connection component includes a plug and a hook. The mating end is provided with a slot for the plug to be inserted into, and the plug is locked in the slot to realize the connection between the sling connection component and the rod-shaped body.

8. The boom of a shifting machine according to claim 7, characterized in that, The rod-shaped body is detachably connected to the plug-in part by fasteners. The outer surface of the rod-shaped body is provided with a groove and a cover plate for closing the groove. The groove is provided with a mounting hole communicating with the slot. The fastener passes through the mounting hole and is threadedly connected to the plug-in part. The outer surface of the cover plate after the groove is connected forms part of the outer surface of the rod-shaped body.

9. A jib arm for a shift machine according to claim 7, wherein, The hook includes a hook body and a locking plate that can rotate relative to the hook body. The insertion part is provided with a mounting groove. One end of the locking plate is embedded in the mounting groove and forms a rotatable connection with the insertion part. When the insertion part is inserted into the slot, the inner wall of the slot closes the mounting groove to prevent the locking plate from detaching from the mounting groove.

10. A transfer machine, comprising a main unit and a boom, wherein the main unit drives the boom to rise and fall via a traction rope, characterized in that, The boom is the boom of the shifting machine as described in any one of claims 1 to 9.

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