Self-locking spreader for containers

Abstract

The utility model provides a kind of self-locking lifting appliance for box. It is suitable for connecting force beam. Self-locking lifting appliance for box includes lifting hook piece and stop piece. Lifting hook piece is formed with the accommodation space suitable for accommodating force beam. And lifting hook piece can support force beam located in accommodation space. Stop piece is movably connected to lifting hook piece along first direction between avoiding position and stop position. Stop piece located in avoiding position allows force beam to move into and move out of accommodation space. Stop piece located in stop position prevents force beam from moving into and moving out of accommodation space. The utility model can reduce the cost of single box, convenient to disassemble and assemble, and is also conducive to eliminating safety hazards.

Description

Technical Field

[0001] This utility model relates generally to the technical field of container manufacturing, and more specifically to a self-locking lifting device for containers. Background Technology

[0002] With the expanding applications of containers in energy storage, fire protection, data integration, and other fields, container structures are exhibiting diverse characteristics, often employing irregularly shaped beams or special profiles as load-bearing beams on both sides. This type of structure presents significant challenges during lifting on the production line: currently, temporary lifting hooks need to be manually welded and subsequently removed and ground, increasing the time per container by approximately 30 minutes and consuming additional welding materials. While acceptable for small-batch production, this leads to a significant increase in manufacturing costs for large-scale production, indirectly raising the cost per container and weakening the product's market competitiveness. Furthermore, there is a risk of temporary welding of lifting rings detaching.

[0003] Therefore, there is a need to provide a self-locking lifting device for containers to at least partially solve the above problems. Utility Model Content

[0004] The present invention includes a series of simplified concepts, which will be further explained in detail in the detailed description section. This present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a self-locking lifting device for boxes, suitable for connecting load-bearing beams, the self-locking lifting device for boxes comprising:

[0006] A hook member, the hook member forming a receiving space suitable for accommodating the load-bearing beam and capable of supporting the load-bearing beam located in the receiving space; and

[0007] A stop member is movably connected to the hook member along a first direction between a clearance position and a stop position. The stop member in the clearance position allows the load-bearing beam to move into and out of the receiving space, while the stop member in the stop position prevents the load-bearing beam from moving into and out of the receiving space.

[0008] Optionally, the hook component includes a load-bearing part, a connecting part, and a load-bearing part connected in sequence. The load-bearing part and the load-bearing part are arranged opposite to each other. The connecting part extends along a first direction. The load-bearing part and the load-bearing part both protrude from the same surface of the connecting part along a second direction perpendicular to the first direction. The load-bearing part, the connecting part, and the load-bearing part enclose the accommodating space, and the load-bearing part is adapted to support the load-bearing beam.

[0009] The stop member is movably connected along the first direction to the end of the load-bearing portion away from the connecting portion. The stop member in the avoidance position does not protrude from the surface of the load-bearing portion adjacent to the bearing portion, while the stop member in the stop position protrudes from the surface of the load-bearing portion adjacent to the bearing portion.

[0010] Optionally, the self-locking lifting device for the container further includes:

[0011] An elastic element is connected between the hook and the stop, and is used to apply a force toward the stop position to the stop.

[0012] Optionally, the self-locking lifting device for the container includes:

[0013] A first limiting part, which is fixedly disposed relative to the hook component; and

[0014] The second limiting part is fixedly disposed relative to the stop member. The second limiting part is located on the side of the first limiting part away from the bearing part along the first direction. The second limiting part is used to abut against the first limiting part during the process of the stop member moving towards the stop position, so as to limit the stop member to the stop position.

[0015] Optionally, the self-locking lifting device for the container includes:

[0016] A first connecting seat is connected to one end of the elastic member and the load-bearing part;

[0017] A second connecting seat is arranged opposite to the first connecting seat along the first direction, and the second connecting seat is connected to the other end of the elastic member and the stop member.

[0018] Wherein, the first limiting part is connected to the first connecting seat, or the first connecting seat includes the first limiting part;

[0019] The second limiting portion is connected to the stop member, or the stop member includes the second limiting portion.

[0020] Optionally, the stop member is recessed in the side facing the hook member along the second direction to form a receiving groove, the receiving groove extending along the first direction, the receiving groove being adapted to accommodate the first limiting portion and allow the first limiting portion to move along the first direction; and / or

[0021] Along the first direction, the first connecting seat is located on the side of the load-bearing part away from the bearing part, and the first connecting seat is spaced apart from the load-bearing part. The self-locking lifting device for the box includes a spring sleeve, which is connected to the load-bearing part and the first connecting seat. The spring sleeve encloses and forms a movable cavity suitable for accommodating the elastic element. The end of the load-bearing part away from the connecting part along the second direction is provided with an avoidance notch, which is adapted to allow the second connecting seat to move through.

[0022] Optionally, the load-bearing portion includes a pair of first sliding grooves located at both ends of the load-bearing portion along a third direction, the third direction being perpendicular to the first direction and the second direction; the stop includes a first protrusion slidably connected to the first sliding groove along the first direction; and / or

[0023] The stop member includes a pair of second sliding grooves located at both ends of the stop member along a third direction, the third direction being perpendicular to the first direction and the second direction. The load-bearing part includes a pair of second protrusions, the second protrusions being slidably connected to the second sliding grooves along the first direction.

[0024] Optionally, the self-locking lifting device for the container includes:

[0025] A first hand-held part is connected to the hook component.

[0026] Optionally, the self-locking lifting device for the container includes:

[0027] The second hand-held part is connected to the stop member.

[0028] Optionally, in the second direction, the bearing portion is spaced apart from the stop member.

[0029] Optionally, the self-locking lifting device for the box includes a lifting member located on the side of the load-bearing part opposite to the load-bearing part, and the lifting member is connected to the load-bearing part.

[0030] Based on the beneficial effects of this utility model:

[0031] According to this utility model, the self-locking lifting device for containers, in use, firstly, the stop is moved to the clearance position, the load-bearing beam is placed in the receiving space of the hook, and then the stop is moved to the stop position. During lifting, the hook supports the load-bearing beam and plays a major role in bearing its weight. The stop, located at the stop position, confines the load-bearing beam within the receiving space, preventing it from detaching from the hook. When it is necessary to release the load-bearing beam, the hook can be separated from the load-bearing beam by moving the stop to the clearance position. By adopting the above solution, compared with technical solutions that alter the structure of the load-bearing beam, such as welding or cutting hooks, this method not only reduces the cost per container without changing the structure of the load-bearing beam, but also facilitates disassembly and assembly, helps eliminate safety hazards, and helps overcome the shortcomings of current lifting methods in terms of efficiency, economy, and safety. Attached Figure Description

[0032] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0033] Figure 1 This is a perspective view of a self-locking lifting device for a box according to one embodiment of the present invention, wherein the stop member is located in the stop position;

[0034] Figure 2 for Figure 1 The diagram shows a front view of a self-locking lifting device for a box, with the stop in the stop position.

[0035] Figure 3 for Figure 1 The diagram shows a cross-sectional view of a self-locking lifting device for a box, with the stop in the stop position.

[0036] Figure 4 for Figure 1 A perspective view of the hook component; and

[0037] Figure 5 for Figure 1 A three-dimensional view of the stop component.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100: Self-locking lifting device for boxes 110: Lifting hook

[0040] 111: Bearing part; 112: Connecting part

[0041] 113: Load-bearing part 113a: First slide groove

[0042] 113b: Second protrusion; 113c: Avoidance gap

[0043] 114: Accommodation space; 116: First connecting seat

[0044] 116a: First limiting part; 117: Spring sleeve

[0045] 118: First handpiece 119: Lifting component

[0046] 120: Stop component; 121: Second limiting part

[0047] 122: Second connector 123: Receiving slot

[0048] 124: First protrusion; 125: Second groove

[0049] 126: Second hand-held part; 130: Elastic element

[0050] D1: First direction D2: Second direction

[0051] D3: Third direction Detailed Implementation

[0052] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0053] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0054] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0055] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0056] The terms “center,” “parallel,” “perpendicular,” “aligned,” and “symmetrical” used in this invention do not have to be precise, but can include typical engineering tolerances.

[0057] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0058] As containers are widely used in various niche markets, all kinds of functional containers have emerged, such as energy storage containers, fire-fighting containers, data integration containers, and special-purpose shipping containers.

[0059] Due to the diverse needs of container manufacturing, the container structure has undergone numerous changes. For example, various types of profiles or irregular beams are used as load-bearing side walls, or load-bearing end beams are installed on the end walls. Taking the production of load-bearing side beams or side walls with load-bearing side beams as an example, the production and lifting of side walls on multi-model special production lines has become a series of challenges. Under certain circumstances, the transfer of side walls has even resulted in a cycle of temporary welding of hooks by dedicated personnel, followed by removal and grinding of the hooks after assembly (estimated to add an extra 30 minutes of labor time per container, as well as additional welding wire consumption). This is feasible for small-batch production. However, in large-scale production, it will significantly increase manufacturing costs, indirectly increasing the cost per container and affecting market competitiveness. At the same time, since each product is temporarily equipped with additional lifting rings during the welding process, there is a certain safety hazard of detachment. Therefore, finding and developing a lifting device that combines convenience and versatility for transferring load-bearing beams has become more urgent and necessary.

[0060] To address the high manufacturing costs of individual boxes with side panels and eliminate safety hazards during production, a lifting device is developed to accommodate the side transport of various box types. This device significantly reduces hook-up time, facilitates easy loading and unloading, streamlines production, lowers the manufacturing cost per box, and enhances market competitiveness.

[0061] This utility model provides a self-locking lifting device for containers. The self-locking lifting device is suitable for connecting load-bearing beams or structures containing load-bearing beams. The load-bearing beam can be a load-bearing side beam at the top of a side structure or a load-bearing end beam at the top of an end structure. The side structure is the side wall of some containers, or the side frame of others, etc. The end structure is the end wall of some containers, or the end frame of others, etc. This utility model is particularly applicable to the lifting of side structures. See below for further details. Figures 1 to 5 The following example illustrates a self-locking lifting device for a box according to the present invention.

[0062] See Figures 1 to 3 The self-locking lifting device 100 for a box according to this utility model includes a hook 110 and a stop 120. The hook 110 forms a receiving space 114 suitable for accommodating a load-bearing beam. The hook 110 is also adapted to support the load-bearing beam located in the receiving space 114. The stop 120 is movably connected to the hook 110 along a first direction D1 between a clearance position and a stop position. In the clearance position, the stop 120 allows the load-bearing beam to move into and out of the receiving space 114. In the stop position, the stop 120 prevents the load-bearing beam from moving into and out of the receiving space 114.

[0063] When the self-locking lifting device 100 for the container is applied to the lifting or hoisting equipment, the load-bearing part 113 is connected to the lifting or hoisting equipment.

[0064] According to the self-locking lifting device 100 for boxes of this utility model, in use, the stop 120 is first moved to the clearance position, the load-bearing beam is placed in the receiving space 114 of the hook 110, and then the stop 120 is moved to the stop position. During lifting, the hook 110 supports the load-bearing beam and plays the main role in bearing the weight of the load-bearing beam. The stop 120, located in the stop position, can limit the load-bearing beam within the receiving space 114, preventing the load-bearing beam from detaching from the hook 110. When it is necessary to release the load-bearing beam, the hook 110 can be separated from the load-bearing beam by moving the stop 120 to the clearance position. By adopting the above-mentioned scheme, in the hoisting of load-bearing beams or structures containing load-bearing beams, compared with technical solutions such as welding hooks or cutting hooks that change the structure of load-bearing beams, it can not only reduce the cost per box without changing the structure of the load-bearing beam, but also facilitate disassembly and assembly, and help eliminate safety hazards. It also helps to overcome the shortcomings of current hoisting schemes in terms of efficiency, economy and safety.

[0065] Further, the hook component 110 includes a load-bearing portion 111, a connecting portion 112, and a load-bearing portion 113 connected in sequence. The load-bearing portion 111 and the load-bearing portion 113 are arranged opposite to each other. The connecting portion 112 extends along a first direction D1. Both the load-bearing portion 111 and the load-bearing portion 113 protrude from the same surface of the connecting portion 112 along a second direction D2 perpendicular to the first direction D1. The load-bearing portion 111, the connecting portion 112, and the load-bearing portion 113 enclose a receiving space 114. The load-bearing portion 111 is adapted to support a load-bearing beam. A stop member 120 is movably connected along the first direction D1 to the end of the load-bearing portion 113 away from the connecting portion 112 between a clearance position and a stop position. The stop member 120 in the clearance position protrudes from the surface of the load-bearing portion 113 adjacent to the load-bearing portion 111. The stop member 120 in the stop position protrudes from the surface of the load-bearing portion 113 adjacent to the load-bearing portion 111.

[0066] See Figure 3 In some embodiments, the self-locking lifting device 100 for the box further includes an elastic element 130. The elastic element 130 is connected between the hook member 110 and the stop member 120. The elastic element 130 is used to apply a force toward the stop member 120. By providing the elastic element 130, the stop member 120 can be automatically reset.

[0067] See Figure 3 and Figure 5 In some embodiments, the self-locking lifting device 100 for the box includes a first limiting part 116a and a second limiting part 121. The first limiting part 116a is fixedly disposed relative to the hook member 110. The second limiting part 121 is fixedly disposed relative to the hook member 110. The second limiting part 121 is located along the first direction D1 on the side of the first limiting part 116a opposite to the bearing part 111. The second limiting part 121 is used to abut against the first limiting part 116a during the movement of the stop member 120 towards the stop position, so as to limit the stop member 120 at the stop position. During the movement of the stop member 120 along the first direction D1, the first limiting part 116a remains stationary relative to the bearing part 113, and the second limiting part 121 moves with the stop member 120. By providing a second limiting part 121, the stop member 120 can abut against the first limiting part 116a when it moves to the stop position, thereby preventing the stop member 120 from continuing to move and keeping the stop member 120 in the stop position.

[0068] See Figures 1 to 3 as well as Figure 5Furthermore, the self-locking lifting device 100 for the box includes a first connecting seat 116 and a second connecting seat 122. The first connecting seat 116 is connected to one end of the elastic member 130 and the load-bearing portion 113. The second connecting seat 122 is arranged opposite to the first connecting seat 116 along a first direction D1. The second connecting seat 122 is connected to the other end of the elastic member 130 and the stop member 120. A first limiting portion 116a is connected to the first connecting seat 116, or the first connecting seat 116 includes a first limiting portion 116a. A second limiting portion 121 is connected to the stop member 120, or the stop member 120 includes a second limiting portion 121. During the movement of the stop member 120 along the first direction D1, the first connecting seat 116 remains stationary relative to the load-bearing portion 113, the second connecting seat 122 moves with the stop member 120, and the elastic member 130 deforms as the stop member 120 moves. When the stop member 120 moves to the clearance position, the elastic member 130 has an elastic force that enables the stop member 120 to move toward the stop position; when the external force applied to the stop member 120 is removed, the stop member 120 moves toward the stop position under the action of the elastic force of the elastic member 130.

[0069] Optionally, when the stop member 120 is in the stop position, the elastic member 130 is in an elastic deformation state, so as to apply an elastic force away from the avoidance position to the stop member 120 through the second connecting seat 122. This helps to increase the resistance of the stop member 120 to move towards the avoidance position, thereby preventing the stop member 120 from moving towards the avoidance position due to vibration, swaying or other factors during the lifting of the box self-locking lifting device 100, and thus ensuring the reliability, stability and safety of the box self-locking lifting device 100 during the lifting process.

[0070] Optionally, the second connecting seat 122 and the stop 120 are manufactured as a single piece.

[0071] See Figure 3 and Figure 5 In some embodiments, the stop 120 has a recessed receiving groove 123 on the side facing the hook 110 along the second direction D2. The receiving groove 123 extends along the first direction D1. The receiving groove 123 is adapted to accommodate the first connecting seat 116 and allows the first connecting seat 116 to move along the first direction D1. By providing a receiving groove 123 in the stop 120 that can accommodate the first connecting seat 116, the structural compactness of the self-locking lifting device 100 for the box along the second direction D2 can be improved, which is beneficial to the miniaturization of the self-locking lifting device 100 for the box and also to weight reduction.

[0072] See Figure 2 and Figure 3Furthermore, along the first direction D1, the first connecting seat 116 is located on the side of the load-bearing portion 113 away from the support portion 111, and the first connecting seat 116 is spaced apart from the load-bearing portion 113. The self-locking lifting device 100 for the box includes a spring sleeve 117. The spring sleeve 117 is connected to the load-bearing portion 113 and the first connecting seat 116. The spring sleeve 117 encloses a movable cavity suitable for accommodating the elastic element 130. The load-bearing portion 113 has a clearance notch 113c at its end along the second direction D2 away from the connecting portion 112. The clearance notch 113c is adapted to allow the second connecting seat 122 to move through. By arranging the first connecting seat 116 on the side of the load-bearing portion 113 away from the support portion 111, the first connecting seat 116 can be prevented from occupying the accommodating space 114. By providing the spring sleeve 117, the elastic element 130 can be protected and shielded. By providing a clearance notch 113c in the load-bearing section 113 to allow the second connecting seat 122 to move through, the structural compactness of the self-locking lifting device 100 for the box along the second direction D2 can be further improved.

[0073] See Figures 3 to 5 Optionally, when the stop member 120 is in the stop position, the second connecting seat 122 is located in the clearance notch 113c.

[0074] See Figure 3 Optionally, the cross-section of the spring sleeve 117 is not completely annular. An opening is provided on the side of the spring sleeve 117 facing the stop member 120. Here, the stop member 120 is used as part of the structure to shield the elastic member 130. Through the cooperation of the spring sleeve 117 and the stop member 120, the elastic member 130 can be shielded, which helps to simplify the structure and reduce costs.

[0075] Optionally, the elastic element 130 is a compression spring. The first connecting seat 116 and the second connecting seat 122 are spring seats or plate-like structures that match the compression spring.

[0076] It is understandable that in other examples, the elastic element 130 can be an elastic structure such as a tension spring.

[0077] See Figure 1 , Figure 4 as well as Figure 5In some embodiments, the load-bearing portion 113 includes a pair of first grooves 113a. The pair of first grooves 113a are located at both ends of the load-bearing portion 113 along a third direction D3. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The stop member 120 includes a first protrusion 124. The first protrusion 124 is slidably connected to the first groove 113a along the first direction D1. By engaging the first groove 113a with the first protrusion 124, the structural compactness of the self-locking lifting device 100 for the box along the third direction D3 can be improved. Moreover, by engaging the solid portion of the load-bearing portion 113 facing the first groove 113a with the first protrusion, the force-bearing area can be increased, thereby enhancing the load-bearing performance of the self-locking lifting device 100 for the box along the second direction D2.

[0078] Continue reading Figure 1 , Figure 4 as well as Figure 5 In other embodiments, the stop 120 includes a pair of second grooves 125. The pair of second grooves 125 are located at both ends of the stop 120 along a third direction D3. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The load-bearing portion 113 includes a pair of second protrusions 113b. The second protrusions 113b are slidably connected to the second grooves 125 along the first direction D1. By engaging the second grooves 125 with the second protrusions 113b, the structural compactness of the self-locking lifting device 100 for the box along the third direction D3 can be improved. Moreover, by engaging the solid portion of the stop 120 facing the second grooves 125 with the second protrusions 113b, the force-bearing area can be increased, thereby enhancing the load-bearing performance of the self-locking lifting device 100 for the box along the second direction D2.

[0079] exist Figure 1 , Figure 4 as well as Figure 5 In the illustrated embodiment, the load-bearing portion 113 includes a pair of first grooves 113a. The pair of first grooves 113a are located at both ends of the load-bearing portion 113 along a third direction D3. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The stop member 120 includes a first protrusion 124. The first protrusion 124 is slidably connected to the first groove 113a along the first direction D1. The stop member 120 includes a pair of second grooves 125. The pair of second grooves 125 are located at both ends of the stop member 120 along a third direction D3. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The load-bearing portion 113 includes a pair of second protrusions 113b. The second protrusions 113b are slidably connected to the second grooves 125 along the first direction D1. This embodiment can improve the structural compactness of the self-locking lifting device 100 for containers along the third direction D3 and also enhance the load-bearing performance of the self-locking lifting device 100 for containers along the second direction D2.

[0080] See Figures 1 to 3In some embodiments, the self-locking lifting device 100 for the container includes a first handhold 118. The first handhold 118 is connected to the hook 110. By providing the first handhold 118 on the hook 110, it is convenient for an operator to operate and move the hook 110.

[0081] Optionally, the first hand-held part 118 is located on the side of the connecting part 112 opposite to the stop member 120 along the second direction D2. The first hand-held part 118 is connected to the connecting part 112. Compared with placing the first hand-held part 118 on the side of the connecting part 112 along the third direction D3, it can reduce the interference of the first hand-held part 118 with the load-bearing beam, and also help to increase the operating space and operating flexibility.

[0082] Optionally, the first hand-held part 118 is fixed to the connecting part 112 by welding or other means.

[0083] See also Figures 1 to 3 In some embodiments, the self-locking lifting device 100 for the container includes a second handle 126. The second handle 126 is connected to the stop 120. By providing the second handle 126 on the hook 110, it facilitates the operator's operation and movement of the stop 120.

[0084] Optionally, the second hand-held part 126 is located on the side of the stop member 120 away from the connecting part 112 along the second direction D2. Compared with setting the second hand-held part 126 on the side of the stop member 120 along the third direction D3, the interference of the second hand-held part 126 with the load-bearing beam can be reduced, and it is also beneficial to increase the operating space and operating flexibility.

[0085] Optionally, the second hand-held part 126 is fixed to the stop part 120 by welding or other means.

[0086] See Figure 2 and Figure 3 In some embodiments, the load-bearing portion 111 is spaced apart from the stop 120 in the second direction D2. When the self-locking lifting device 100 for the box is connected to the side or end structure, the simple space between the load-bearing portion 111 and the stop is suitable for accommodating the portion other than the load-bearing beam, thereby facilitating the lifting of the object in a more stable posture and improving the stability and safety of the lifting operation.

[0087] See Figures 1 to 3 Furthermore, the self-locking lifting device 100 for containers includes a lifting member 119. The lifting member 119 is located on the side of the load-bearing portion 113 opposite to the load-bearing portion 111. The lifting member 119 is connected to the load-bearing portion 113. By providing the lifting member 119, it is convenient to connect the self-locking lifting device 100 for containers to lifting equipment.

[0088] Optionally, the lifting component 119 may be a lifting lug or lifting ring, suitable for hooking and connecting with lifting or hoisting equipment. The lifting component 119 may be fixed to the load-bearing part 113 by welding or other methods.

[0089] Optionally, a weight-reducing groove may be provided on a portion of the stop member 120 located below the second connecting seat 122 to reduce weight while achieving functionality. A groove is formed on the surface of the connecting portion 112 facing the first handheld portion 118 to accommodate the user's hand, providing more room for the user's hand movement and improving the user experience.

[0090] This utility model's self-locking lifting device 100 for containers adopts a structural form different from traditional lifting devices. Utilizing the characteristic that the entire side structure of the container is reinforced with load-bearing side beams, it can clamp the load-bearing side beams without holes and effectively lock the side structure from four directions of the load-bearing side beams, ensuring safety and reliability. These four directions are mutually intersecting and all intersect along the length of the load-bearing side beams. Specifically, hooks 110 restrict the degrees of freedom of the load-bearing side beams in three directions, and a stop 120 located at a stop position restricts the degrees of freedom of the load-bearing side beams along the fourth direction. The remaining two degrees of freedom are fixed by frictional self-locking between the load-bearing side beams and the self-locking lifting device 100 along the length direction. When lifting a single load-bearing side beam or a side structure containing a load-bearing side beam, more than one self-locking lifting device 100 can be installed on the same load-bearing side beam. The self-locking lifting device 100 for boxes of this utility model is similar in operation and principle to the lifting of the end structure, and will not be described in detail here.

[0091] Production practice shows that by applying the self-locking lifting tool 100 for boxes of this utility model, the assembly lifting time of the entire box side can be greatly reduced, for example from 30 minutes to 5 seconds, thus improving efficiency, saving labor and welding wire consumption, effectively reducing the unit cost of various functional boxes, and eliminating operational safety hazards.

[0092] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0093] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A self-locking lifting device for a box, suitable for connecting load-bearing beams, characterized in that, The self-locking lifting device for the container includes: A hook member, the hook member forming a receiving space suitable for accommodating the load-bearing beam and capable of supporting the load-bearing beam located in the receiving space; and A stop member is movably connected to the hook member along a first direction between a clearance position and a stop position. The stop member in the clearance position allows the load-bearing beam to move into and out of the receiving space, while the stop member in the stop position prevents the load-bearing beam from moving into and out of the receiving space.

2. The self-locking lifting device for a box according to claim 1, characterized in that, The hook component includes a load-bearing part, a connecting part, and a load-bearing part connected in sequence. The load-bearing part and the load-bearing part are arranged opposite to each other. The connecting part extends along a first direction. The load-bearing part and the load-bearing part both protrude from the same surface of the connecting part along a second direction perpendicular to the first direction. The load-bearing part, the connecting part, and the load-bearing part enclose the accommodating space, and the load-bearing part is adapted to support the load-bearing beam. The stop member is movably connected along the first direction to the end of the load-bearing portion away from the connecting portion. The stop member in the avoidance position does not protrude from the surface of the load-bearing portion adjacent to the bearing portion, while the stop member in the stop position protrudes from the surface of the load-bearing portion adjacent to the bearing portion.

3. The self-locking lifting device for a box according to claim 2, characterized in that, The self-locking lifting device for the container also includes: An elastic element is connected between the hook and the stop, and is used to apply a force toward the stop position to the stop.

4. The self-locking lifting device for a box according to claim 3, characterized in that, The self-locking lifting device for the container includes: A first limiting part, which is fixedly disposed relative to the hook component; and The second limiting part is fixedly disposed relative to the stop member. The second limiting part is located on the side of the first limiting part away from the bearing part along the first direction. The second limiting part is used to abut against the first limiting part during the process of the stop member moving towards the stop position, so as to limit the stop member to the stop position.

5. The self-locking lifting device for a box according to claim 4, characterized in that, The self-locking lifting device for the container includes: A first connecting seat is connected to one end of the elastic member and the load-bearing part; A second connecting seat is arranged opposite to the first connecting seat along the first direction, and the second connecting seat is connected to the other end of the elastic member and the stop member. Wherein, the first limiting part is connected to the first connecting seat, or the first connecting seat includes the first limiting part; The second limiting portion is connected to the stop member, or the stop member includes the second limiting portion.

6. The self-locking lifting device for a box according to claim 5, characterized in that, The stop member has a recessed receiving groove on the side facing the hook member along the second direction. The receiving groove extends along the first direction and is adapted to accommodate the first limiting portion and allow the first limiting portion to move along the first direction; and / or Along the first direction, the first connecting seat is located on the side of the load-bearing part away from the bearing part, and the first connecting seat is spaced apart from the load-bearing part. The self-locking lifting device for the box includes a spring sleeve, which is connected to the load-bearing part and the first connecting seat. The spring sleeve encloses and forms a movable cavity suitable for accommodating the elastic element. The end of the load-bearing part away from the connecting part along the second direction is provided with an avoidance notch, which is adapted to allow the second connecting seat to move through.

7. The self-locking lifting device for a box according to any one of claims 2 to 6, characterized in that, The load-bearing portion includes a pair of first sliding grooves located at both ends of the load-bearing portion along a third direction, the third direction being perpendicular to both the first and second directions. The stop member includes a first protrusion slidably connected to the first sliding groove along the first direction; and / or The stop member includes a pair of second sliding grooves located at both ends of the stop member along a third direction, the third direction being perpendicular to the first direction and the second direction. The load-bearing part includes a pair of second protrusions, the second protrusions being slidably connected to the second sliding grooves along the first direction.

8. The self-locking lifting device for a box according to any one of claims 1 to 6, characterized in that, The self-locking lifting device for the container includes: A first handle, the first handle being connected to the hook; and / or The second hand-held part is connected to the stop member.

9. The self-locking lifting device for a box according to any one of claims 2 to 6, characterized in that, In the second direction, the bearing portion is spaced apart from the stop member.

10. The self-locking lifting device for a box according to any one of claims 2 to 6, characterized in that, The self-locking lifting device for the box includes a lifting member located on the side of the load-bearing part opposite to the load-bearing part, and the lifting member is connected to the load-bearing part.

Images