Hoisting equipment

Abstract

The application relates to a hoisting device, comprising two oppositely arranged leg assemblies, a crossbeam assembly fixed at the top ends of the two leg assemblies, and a hoisting assembly capable of sliding on the crossbeam assembly, wherein the crossbeam assembly comprises a first end crossbeam unit and a second end crossbeam unit fixedly connected with the two leg assemblies one by one, and a plurality of main body crossbeam units detachably installed between the first end crossbeam unit and the second end crossbeam unit, and each main body crossbeam unit is detachably connected. The length of the crossbeam assembly can be flexibly adjusted by adjusting the installation quantity of the main body crossbeam units, so that the hoisting device can adapt to narrow spaces of different sizes, thereby meeting the diversified material carrying requirements in marine operations, significantly improving the applicability of the hoisting device in marine operations, and improving the overall efficiency of marine operations.

Description

Technical Field

[0001] This application relates to the field of lifting and transportation, and in particular to a portable A-frame lifting device. Background Technology

[0002] In offshore engineering (marine engineering) material handling operations, portable A-frame lifting equipment has become an important tool for improving material handling efficiency due to its convenient operation and flexible mobility. In related technologies, commonly used portable A-frame lifting equipment is mainly divided into two categories: one type has fixed values ​​for the outrigger height and horizontal beam length, and its structural parameters cannot be adjusted after manufacturing; the other type has an outrigger height that can be adjusted according to actual needs, adapting to the lifting and placement requirements of materials at different heights, but the length of the horizontal beam remains fixed.

[0003] For the second type of portable A-frame lifting structure mentioned above, the length of its horizontal beam is fixed during the design and manufacturing stage. Therefore, the installation and erection of this type of equipment must be carried out in an operating space with a length greater than the beam length. However, in offshore operations, there are many narrow operating spaces (such as gaps between various equipment, and inside cabins). This type of portable A-frame lifting equipment often cannot be installed normally in these narrow spaces, making it unable to participate in related material handling operations. As a result, the applicability of this type of equipment is greatly reduced, making it difficult to meet the diverse material handling needs in offshore operations and hindering the overall efficiency improvement of offshore operations. Utility Model Content

[0004] Therefore, it is necessary to address the problem that portable A-frame lifting structures in related technologies cannot operate in narrow working spaces by providing a lifting device that can adapt to narrow spaces of different sizes by flexibly adjusting the length of the horizontal beam of the lifting device, thereby significantly improving the applicability of the lifting device in marine operations.

[0005] According to one aspect of this application, a lifting device is provided, comprising: two outrigger assemblies disposed opposite each other, a crossbeam assembly fixed to the top ends of the two outrigger assemblies, and a lifting assembly capable of sliding on the crossbeam assembly, wherein...

[0006] The crossbeam assembly includes: a first end crossbeam unit and a second end crossbeam unit that are fixedly connected to the two support leg assemblies in a one-to-one correspondence, and a plurality of main body crossbeam units that are detachably installed between the first end crossbeam unit and the second end crossbeam unit. The main body crossbeam units are detachably connected to each other. The length of the crossbeam assembly can be adjusted by adjusting the number of main body crossbeam units installed.

[0007] In one embodiment, the connecting end of the first end beam unit and the first end of the main body beam unit are both provided with protrusions of the same specifications, and the connecting end of the second end beam unit and the second end of the main body beam unit are both provided with recesses that are adapted to the protrusions.

[0008] In one embodiment, the protrusion has a plurality of fixing holes, and the recess has a plurality of mounting holes corresponding to the fixing holes. After the protrusion and the recess are fitted together, fasteners are passed through the mounting holes and fixing holes in sequence to improve the connection strength between the protrusion and the recess.

[0009] In one embodiment, the plurality of fixing holes includes: a plurality of first fixing holes disposed along a first direction, and a plurality of second fixing holes disposed along a second direction; the plurality of mounting holes includes: a plurality of first mounting holes disposed along the first direction, and a plurality of second mounting holes disposed along the second direction; the first direction and the second direction are perpendicular to each other.

[0010] In one embodiment, the outrigger assembly includes:

[0011] Fixed support legs in an A-shape;

[0012] An adjustable leg, which is connected to the fixed leg and whose height is adjustable, allows the height of the crossbeam assembly to be adjusted by adjusting the height of the adjustable leg.

[0013] In one embodiment, the outrigger assembly further includes:

[0014] A reinforced support leg is provided, the bottom end of which is fixed to the adjustable support leg, and the axis of the reinforced support leg forms an acute angle with the axis of the adjustable support leg.

[0015] A support frame, fixed to the top of the reinforcing support leg and the adjustable support leg, is used to support at least a portion of the first end beam unit or the second end beam unit.

[0016] In one embodiment, the fixed support leg includes: a support leg portion and a connecting portion fixed to the top of the support leg portion; the connecting portion extends vertically, and the side of the connecting portion is provided with at least two first connecting holes;

[0017] The adjustable support leg passes through the connecting part, and the adjustable support leg is provided with a plurality of evenly distributed second connecting holes along its own axial direction;

[0018] By passing fasteners sequentially through the first connecting hole and the second connecting hole, the adjustable leg and the fixed leg are fixedly connected. By adjusting the connection position between the adjustable leg and the fixed leg, the height of the adjustable leg can be adjusted.

[0019] In one embodiment, the bottom end of the support leg is provided with a movable wheel.

[0020] In one embodiment, the lifting assembly includes: a movable plate and a sliding wheel, the sliding wheel being disposed on the upper side of the crossbeam assembly and slidable along the length direction of the crossbeam assembly; the top end of the movable plate is fixedly connected to the bearing of the sliding wheel, the bottom end of the movable plate extends to the lower side of the crossbeam assembly, and the bottom end of the movable plate is provided with a suspension unit for suspending and transferring heavy objects.

[0021] In one embodiment, the suspension unit is a hand chain hoist.

[0022] The lifting equipment provided in this application allows for flexible adjustment of the length of the crossbeam assembly by adjusting the number of crossbeam units installed in the main body. This enables the lifting equipment to adapt to narrow spaces of different sizes, thereby meeting the diverse material handling needs in offshore operations, significantly improving the applicability of the lifting equipment in offshore operations, and enhancing the overall efficiency of offshore operations.

[0023] Moreover, the first end beam unit, the second end beam unit and the main beam unit, as well as the various main beam units, are connected by mortise and tenon joints through structurally compatible protrusions and recesses. This connection method enables the beam assembly to be adjusted in length to meet different operational needs. On the other hand, the mortise and tenon structure ensures the stability of the beam assembly, allowing the lifting assembly to transport heavy objects stably.

[0024] In addition, by adjusting the height of the adjustable outriggers, the height of the crossbeam assembly can be adjusted, enabling the lifting equipment to adapt to the lifting needs of heavy objects at different heights, further improving the applicability of the lifting equipment. Attached Figure Description

[0025] Figure 1 A structural schematic diagram of the lifting equipment provided in this application.

[0026] Figure 2 A front view of the lifting equipment provided in this application.

[0027] Figure 3 Left view of the lifting equipment provided in this application.

[0028] Figure 4 for Figure 2 Enlarged view of the area indicated by the dashed line.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Outrigger assembly; 11. Fixed outrigger; 12. Adjustable outrigger; 13. Reinforced support leg; 14. Support frame; 111. Outrigger part; 112. Connecting part; 113. Caster wheel; 114. First connecting hole; 121. Second connecting hole;

[0031] 20. Crossbeam assembly; 21. First end crossbeam unit; 22. Second end crossbeam unit; 23. Main body crossbeam unit; 24. Protrusion; 241. First fixing hole; 242. Second fixing hole; 25. Recess; 251. First mounting hole; 252. Second mounting hole; 26. Fastener;

[0032] 30. Lifting assembly; 31. Moving plate; 32. Roller pulley. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] As described in the background section, the horizontal beam of the portable A-frame lifting equipment in the related technology has a fixed length, which makes it impossible to install and erect in narrow spaces. This makes it difficult to meet the diverse material handling needs in marine operations and hinders the overall efficiency improvement of marine operations.

[0040] Therefore, this application provides a lifting device that can flexibly adjust the length of the horizontal beam of the lifting device, thereby enabling the lifting device to adapt to narrow spaces of different sizes, improving the applicability of the lifting device in marine operations, and thus improving the overall efficiency of marine operations.

[0041] See Figure 1 As shown, Figure 1A schematic diagram of the structure of a lifting device according to an embodiment of this application is shown. The lifting device provided in one embodiment of this application includes: two outrigger assemblies 10 arranged opposite each other, an adjustable-length crossbeam assembly 20 fixed to the top of the two outrigger assemblies 10, and a lifting assembly 30 that can slide on the crossbeam assembly 20.

[0042] Combination Figure 2 As shown, Figure 2 A front view of a lifting device according to an embodiment of this application is shown. To facilitate the length adjustment of the crossbeam assembly 20, in a preferred embodiment, the crossbeam assembly 20 includes: a first end crossbeam unit 21 and a second end crossbeam unit 22 fixedly connected to the two outrigger assemblies 10 in a one-to-one correspondence; and a plurality of main body crossbeam units 23 detachably installed between the first end crossbeam unit 21 and the second end crossbeam unit 22. The main body crossbeam units 23 are detachably connected to each other. By adjusting the number of main body crossbeam units 23 installed, the length of the crossbeam assembly 20 can be adjusted.

[0043] The lifting equipment of this application can adjust the length of the crossbeam assembly 20 by adjusting the number of crossbeam units 23 installed in the main body, so that the lifting equipment can adapt to narrow spaces of different sizes, thereby enabling the lifting equipment to meet the diverse material handling needs in marine operations, significantly improving the applicability of the lifting equipment in marine operations, and improving the overall efficiency of marine operations.

[0044] To achieve detachable connections between the first end beam unit 21, the second end beam unit 22, and the multiple main body beam units 23 in the beam assembly 20, as well as detachable connections between the various main body beam units 23, the connecting end of the first end beam unit 21 and the first end of the main body beam unit 23 are each provided with a protrusion 24 of the same specification. The connecting end of the second end beam unit 22 and the second end of the main body beam unit 23 are each provided with a recess 25 that matches the protrusion 24. Figure 4 As shown. The connecting end of the first end beam unit 21 is the end where the first end beam unit 21 is connected to the main body beam unit 23, and the connecting end of the second end beam unit 22 is the end where the second end beam unit 22 is connected to the main body beam unit 23.

[0045] Specifically, the protrusion 24 of the first end beam unit 21 engages with the recess 25 of the first main beam unit 23 among the plurality of main beam units 23, and the protrusion 24 of the last main beam unit 23 engages with the recess 25 of the second end beam unit 22, thereby achieving a detachable connection between the first end beam unit 21, the second end beam unit 22, and the plurality of main beam units 23; the protrusion 24 of the preceding main beam unit 23 engages with the recess 25 of the following main beam unit 23, thereby achieving a detachable connection between the various main beam units 23. The protrusion 24 and the recess 25 form an interference fit mortise and tenon connection structure. The cross-sectional shape of the protrusion 24 includes, but is not limited to, rectangle, dovetail, and trapezoid, and the recess 25 is provided with a guide slope corresponding to the cross-sectional shape of the protrusion 24. In this embodiment, the cross-sectional shape of the protrusion 24 is rectangular. By adjusting the number of main beam units 23 as described above, the length of the beam assembly 20 can be adjusted, while ensuring the structural stability of the beam assembly 20.

[0046] Continue reading Figure 4 To enhance the connection strength between the protrusion 24 and the recess 25, thereby improving the overall load-bearing capacity of the crossbeam assembly 20, the protrusion 24 is provided with multiple fixing holes, and the recess 25 is provided with multiple mounting holes corresponding to the fixing holes. After the protrusion 24 and the recess 25 are engaged, fasteners 26 pass through the mounting holes and fixing holes in sequence to enhance the connection strength between the protrusion 24 and the recess 25. The fasteners 26 include, but are not limited to, one or more of bolts, screws, nuts, pins, clamps, and washers.

[0047] Based on the self-locking of the protrusion 24 and the recess 25, this application uses fastener 26 to lock the protrusion 24 and the recess 25 a second time, forming a composite reinforcement structure. This enhances the connection strength between the protrusion 24 and the recess 25, preventing loosening at the connection point. At the same time, the load can be transferred to the area around the hole through the fastener 26, distributing the stress between the mating contact surface and the connection point of the fastener 26, reducing the load on a single part, and extending the service life of the beam assembly 20.

[0048] Specifically, the plurality of fixing holes on the protrusion 24 include: a plurality of first fixing holes 241 arranged along the horizontal direction a, and a plurality of second fixing holes 242 arranged along the vertical direction b. Similarly, the plurality of mounting holes on the recess 25 include: a plurality of first mounting holes 251 arranged along direction a, and a plurality of second mounting holes 252 arranged along direction b; direction a and direction b are perpendicular to each other. Through the above arrangement, the connection performance between the protrusion 24 and the recess 25 can be improved.

[0049] Combination Figure 2 and Figure 3 As shown, the outrigger assembly 10 includes: a fixed outrigger 11, an adjustable outrigger 12, a reinforcing support leg 13, and a support frame 14. The fixed outrigger 11 is A-shaped; the adjustable outrigger 12 is connected to the fixed outrigger 11, and its height can be adjusted by changing the connection position between the adjustable outrigger 12 and the fixed outrigger 11; the bottom end of the reinforcing support leg 13 is fixed to the adjustable outrigger 12, and the axis of the reinforcing support leg 13 forms a preset angle with the axis of the adjustable outrigger 12, preferably an acute angle; the support frame 14 is fixed to the top of the reinforcing support leg 13 and the top of the adjustable outrigger 12, and is used to support at least a portion of the first end beam unit 21 or the second end beam unit 22. Preferably, the bottom end of the fixed outrigger 11 is provided with a caster wheel 113 for easy and flexible movement of the lifting equipment.

[0050] This application improves the stability of the outrigger assembly 10 by adding a reinforced support leg 13 to the adjustable outrigger 12. The adjustable outrigger 12, reinforced support leg 13, and support frame 14 together form a triangular structure. Simultaneously, the support frame 14 supports the crossbeam assembly 20, increasing the support area of ​​both the outrigger assembly 10 and the crossbeam assembly 20, providing reliable support for the crossbeam assembly 20, significantly improving the overall stability of the lifting equipment, and reducing safety risks caused by structural swaying during operation. Furthermore, by adjusting the height of the adjustable outrigger 12, the height of the crossbeam assembly 20 can be adjusted, allowing the lifting equipment to adapt to the lifting needs of heavy objects at different heights, significantly improving the operational adaptability and scenario compatibility of the lifting equipment.

[0051] To achieve height adjustment of the adjustable support leg 12, in one embodiment of this application, the fixed support leg 11 includes a support leg portion 111 and a connecting portion 112 fixed to the top of the support leg portion 111. The bottom end of the support leg portion 111 is provided with a movable wheel 113; the connecting portion 112 extends vertically and has at least two first connecting holes 114 on its side. The adjustable support leg 12 has a plurality of evenly distributed second connecting holes 121 along its own axial direction, and the adjustable support leg 12 passes through the connecting portion 112. A fixed connection between the adjustable support leg 12 and the fixed support leg 11 is achieved by fasteners sequentially passing through the first connecting holes 114 and the second connecting holes 121. By adjusting the connection position between the adjustable support leg 12 and the connecting portion 112, the height of the adjustable support leg 12 can be adjusted, thereby adjusting the height of the crossbeam assembly 20.

[0052] Continue reading Figure 2The lifting assembly includes a movable plate 31 and a sliding wheel 32. The sliding wheel 32 is disposed on the upper side of the crossbeam assembly 20 and can slide along the length of the crossbeam assembly 20. The top end of the movable plate 31 is fixedly connected to the bearing of the sliding wheel 32, and the bottom end of the movable plate 31 extends to the lower side of the crossbeam assembly 20. A suspension unit (not shown in the figure) is provided at the bottom end of the movable plate 31. The suspension unit is used to suspend heavy objects and slide along the crossbeam assembly 20 with the sliding wheel 32 to realize the transfer of heavy objects. Preferably, the suspension unit is a hand chain hoist.

[0053] The lifting equipment provided in this application allows for flexible adjustment of the length of the crossbeam assembly 20 by adjusting the number of crossbeam units 23 installed in the main body. This enables the lifting equipment to adapt to narrow spaces of different sizes, significantly improving its applicability in marine operations. Furthermore, the first end crossbeam unit 21, the second end crossbeam unit 22, and the main body crossbeam unit 23, as well as the various main body crossbeam units 23, are connected by mortise and tenon joints formed by structurally compatible protrusions 24 and recesses 25. This connection method allows for length adjustment of the crossbeam assembly 20 to meet different operational needs; on the other hand, the mortise and tenon structure ensures the stability of the crossbeam assembly 20, enabling the lifting assembly 30 to stably transport heavy objects. In addition, the height of the crossbeam assembly 20 can be adjusted by adjusting the height of the adjustable outriggers 12, allowing the lifting equipment to adapt to the lifting requirements of heavy objects at different heights, further improving its applicability.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A lifting device, characterized in that, include: The system includes two opposing outrigger assemblies, a crossbeam assembly fixed to the top of the two outrigger assemblies, and a lifting assembly capable of sliding on the crossbeam assembly. The crossbeam assembly includes: a first end crossbeam unit and a second end crossbeam unit that are fixedly connected to the two support leg assemblies in a one-to-one correspondence, and a plurality of main body crossbeam units that are detachably installed between the first end crossbeam unit and the second end crossbeam unit. The main body crossbeam units are detachably connected to each other. The length of the crossbeam assembly can be adjusted by adjusting the number of main body crossbeam units installed.

2. The lifting equipment according to claim 1, characterized in that, The connecting end of the first end beam unit and the first end of the main body beam unit are both provided with protrusions of the same specifications, and the connecting end of the second end beam unit and the second end of the main body beam unit are both provided with recesses that are adapted to the protrusions.

3. The lifting equipment according to claim 2, characterized in that, The protruding part is provided with a plurality of fixing holes, and the recessed part is provided with a plurality of mounting holes corresponding to the fixing holes. After the protruding part and the recessed part are fitted together, fasteners are passed through the mounting holes and the fixing holes in sequence to improve the connection strength between the protruding part and the recessed part.

4. The lifting equipment according to claim 3, characterized in that, The plurality of fixing holes include: a plurality of first fixing holes arranged along a first direction, and a plurality of second fixing holes arranged along a second direction; the plurality of mounting holes include: a plurality of first mounting holes arranged along a first direction, and a plurality of second mounting holes arranged along a second direction; the first direction and the second direction are perpendicular to each other.

5. The lifting equipment according to claim 1, characterized in that, The outrigger assembly includes: Fixed support legs in an A-shape; An adjustable leg, which is connected to the fixed leg and whose height is adjustable, allows the height of the crossbeam assembly to be adjusted by adjusting the height of the adjustable leg.

6. The lifting equipment according to claim 5, characterized in that, The outrigger assembly also includes: A reinforced support leg is provided, the bottom end of which is fixed to the adjustable support leg, and the axis of the reinforced support leg forms an acute angle with the axis of the adjustable support leg. A support frame, fixed to the top of the reinforcing support leg and the adjustable support leg, is used to support at least a portion of the first end beam unit or the second end beam unit.

7. The lifting equipment according to claim 5, characterized in that, The fixed support leg includes: a support leg portion and a connecting portion fixed to the top of the support leg portion; the connecting portion extends vertically and vertically, and the side of the connecting portion is provided with at least two first connecting holes; The adjustable support leg passes through the connecting part, and the adjustable support leg is provided with a plurality of evenly distributed second connecting holes along its own axial direction; By passing fasteners sequentially through the first connecting hole and the second connecting hole, the adjustable leg and the fixed leg are fixedly connected. By adjusting the connection position between the adjustable leg and the fixed leg, the height of the adjustable leg can be adjusted.

8. The lifting equipment according to claim 7, characterized in that, The bottom of the support leg is equipped with a movable wheel.

9. The lifting equipment according to claim 1, characterized in that, The lifting assembly includes a movable plate and a sliding wheel. The sliding wheel is disposed on the upper side of the crossbeam assembly and can slide along the length direction of the crossbeam assembly. The top end of the movable plate is fixedly connected to the bearing of the sliding wheel, and the bottom end of the movable plate extends to the lower side of the crossbeam assembly. The bottom end of the movable plate is provided with a suspension unit for suspending and transferring heavy objects.

10. The lifting equipment according to claim 9, characterized in that, The suspension unit is a hand-operated hoist.

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