Low-clearance heavy box cargo lifting and transferring device

Abstract

The utility model relates to a low gap heavy -duty box body goods lifting transfer device, including frame main part and support wheel system, frame main part includes two quadrilaterals frame, single quadrilateral frame includes two first support and two second support, two quadrilaterals frame interlaced set up arrangement, form the space for fixed box body goods. Aiming at the working condition of heavy -duty square box equipment hoist hole, and ground fit installation, this device passes through the cooperation of scissor fork frame and jack, makes equipment one side realize slight inclination, then the lateral support is completed with the help of the friction between the adjustable angle fixed plate of frame inboard and box body goods outer wall, and utilizes the Ding hook structure and holds the bottom of box body goods, thereby realizes steady lifting, through the multi -point, all -round clamping, effectively solved the technical bottleneck that traditional equipment can not carry when not hoisting point.

Description

Technical Field

[0001] This utility model relates to the field of material handling technology, and in particular to a low-clearance heavy-duty box-shaped cargo lifting and transfer device. Background Technology

[0002] In the field of modern material handling, handling vehicles are the core equipment for realizing short-distance movement of goods, and they usually rely on mechanical structures to complete loading, lifting and transportation functions.

[0003] In practical applications, traditional equipment can no longer meet the complex requirements of some special handling objects, especially when handling heavy square boxes (such as large equipment shells, industrial bins, electrical cabinets, etc.). These boxes are usually characterized by their heavy weight, strong structural rigidity, extremely low bottom clearance, and lack of standard lifting holes, making it difficult for traditional forklifts or pallet trucks to smoothly insert supports, resulting in operational difficulties, low efficiency, and prominent safety hazards.

[0004] Especially in factories, warehouses, or construction sites, some units still rely on manual labor to lift heavy containers onto flatbed trucks or roller supports. This is not only labor-intensive and inefficient, but also highly prone to safety accidents, such as hand and foot crushing, sprains, and injuries from falling objects. These incidents seriously threaten the personal safety of workers and violate the basic requirements of modern industrial safety. Furthermore, due to the limitations of the existing manual forklift's bottom structure, the equipment can hardly complete the insertion action when the bottom clearance is less than 50 mm, further restricting its adaptability.

[0005] Although some special forklifts or customized roller platforms exist on the market, they have drawbacks such as large size, high cost, complex operation, and difficult maintenance, making it difficult to meet the flexible use needs of small and medium-sized manufacturing enterprises and areas with limited space. Summary of the Invention

[0006] In view of the problem that when transferring heavy boxed goods in the prior art, the bottom of the box is completely in contact with the ground and there is no lifting point, this utility model provides a low-gap heavy boxed goods lifting and transfer device, including a frame body and a support wheel system. The main body of the frame includes two quadrilateral frames, each quadrilateral frame including two parallel first supports and two parallel second supports, and adjacent first supports and second supports are detachably connected; The two first supports at the corresponding ends of the two quadrilateral frames are arranged in a scissor-like manner and are detachable at the connection point; the two quadrilateral frames are staggered and nested to form a space for fixing the boxed goods; The second bracket has a fixing plate hinged to the side facing the inside of the frame body for clamping the cargo in the box, and the fixing plate is parallel to the second bracket; The second bracket located on the higher side of the two quadrilateral frames is provided with a jack support frame on the side away from the interior of the frame body, and a slot for engaging the jack is provided on the lower side of each jack support frame. The second bracket, located on the lower side of the two quadrilateral frames, has a hook support frame on the side away from the interior of the frame body. Each hook support frame has a slot. The slot contains a hook for vertically lifting the cargo box. The top of the hook is a limiting part, and a spring is sleeved on the hook between the hook support frame and the limiting part. The support wheel system includes a connecting frame, a wheel mounting arm, and a wheel; the connecting frame is provided on the first bracket on the higher side of the quadrilateral frame, the connecting frame is provided with a detachable wheel mounting arm, and the other end of the wheel mounting arm is fixed with a wheel.

[0007] Furthermore, the first bracket has first connecting through holes at both ends, and the second bracket has second connecting through holes at both ends that cooperate with the first connecting through holes, for connecting with the first bracket by bolts.

[0008] Furthermore, each of the first brackets has a plurality of first connecting through holes at both ends along the length of the first bracket.

[0009] Furthermore, the fixing plate has several lugs on one side, and the second bracket is fixed with ear plates that cooperate with the lugs. Each lug has an ear plate on each side, and the ear plates are detachably connected to the lugs.

[0010] Furthermore, the wheel mounting arm is detachably connected to the connecting frame via a pin and a retaining spring.

[0011] Furthermore, a plurality of mounting holes for installing the pins are provided on each of the connecting brackets along the length of the connecting bracket.

[0012] Furthermore, the fixing plate has a striped rubber layer on the surface facing the inside of the frame body.

[0013] Compared with the prior art, this utility model has the following beneficial effects: This device overcomes the limitation of traditional handling vehicles that must be inserted from the bottom of the equipment for lifting. Specifically designed for heavy-duty containerized equipment with low bottom clearance (or flush with the ground) and no lifting holes, it utilizes a scissor-lift frame in conjunction with jacks to slightly tilt one side of the equipment. Lateral support is then achieved through the friction between the adjustable-angle fixing plate inside the frame and the outer wall of the container. A hook structure further supports the bottom of the container, resulting in stable lifting. Multi-point, omnidirectional clamping ensures stability and safety during transport, enabling the safe lifting of heavy containers with bottom clearances as low as tens of millimeters, significantly reducing labor intensity. It eliminates the need for large lifting devices such as gantry cranes, safely and reliably lifting equipment from its original position, effectively solving the technical bottleneck of traditional equipment that cannot be moved without lifting points.

[0014] Furthermore, the connecting frame for mounting the wheel mounting arms has multiple mounting holes, allowing for free adjustment of the mounting angle and height of the wheel mounting arms according to on-site conditions. This enables flexible adjustment of the height of the chassis body and the cargo box from the ground, adapting to different cargo box sizes and ground conditions, and ensuring the stability and balance of the equipment's center of gravity during lifting and transportation. Simultaneously, the first support of the chassis body has multiple through holes, allowing for adjustment of the chassis width according to the actual cargo box dimensions, providing high flexibility and versatility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the connection between the second bracket, the fixing plate, and the jack support frame of this utility model; Figure 3 This is a schematic diagram showing the connection between the second bracket, the fixing plate, and the hook support frame of this utility model; Figure 4 This is a schematic diagram of the support wheel system structure of this utility model; In the diagram: 1. First bracket; 2. Second bracket; 3. Fixing plate; 4. Jack support frame; 5. Slot; 6. T-hook support frame; 7. Slot hole; 8. T-hook; 9. Spring; 10. Connecting frame; 11. Wheel mounting arm; 12. Wheel; 13. Lug; 14. Ear plate; 15. Connection point; 16. First connecting through hole; 17. Second connecting through hole. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "upper," "lower," "front," "rear," "top," "bottom," etc., 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 utility model and simplifying the description, and do not indicate or imply that the device or part 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 utility model. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0018] like Figures 1-4 As shown, a low-clearance heavy-duty box cargo lifting and transfer device includes a frame body and a support wheel system; The frame body comprises two quadrilateral frames. Each quadrilateral frame includes two parallel first supports 1 and two parallel second supports 2, which are detachably connected. Specifically, the first supports 1 are made of channel steel, and the second supports 2 are closed square tube structures made of carbon steel. The first supports 1 have first connecting through holes 16 at both ends, and the second supports 2 have second connecting through holes 17 at both ends that mate with the first connecting through holes 16, for connection to the first supports 1 via bolts.

[0019] The two first supports 1 at the corresponding ends of the two quadrilateral frames are arranged in a scissor-like manner and are detachable at the connection point; the two quadrilateral frames are staggered and nested to form a space for fixing the boxed goods.

[0020] Specifically, the two first supports 1 form a connection point 15 at their intersection, and a connecting through hole is provided at the connection point 15 for bolt connection. The intersection angle between the two first supports 1 can be adjusted according to actual use needs, and they are assembled and locked with bolts and nuts to form an adjustable scissor lift frame structure.

[0021] The second bracket 2 is hinged to a fixing plate 3 for clamping the cargo box on the side facing the inside of the frame body. The fixing plate 3 is parallel to the second bracket 2.

[0022] Specifically, such as Figure 2 As shown, the fixing plate 3 has several lugs 13 on one side, and ear plates 14 that cooperate with the lugs 13 are fixed on the second bracket 2. Each lug 13 has an ear plate 14 on each side. The ear plates 14 and lugs 13 are detachably connected, such as by a pin and spring clip or by bolts. The fixing plate 3 ensures a close fit and effective clamping with the goods in the box. At the same time, the fixing plate 3 is rotatable relative to the second bracket 2, allowing for flexible adjustment to adapt to different surface shapes of the goods in the box and achieve maximum contact with the surface of the goods.

[0023] Specifically, the fixing plate 3 is made of alloy material. Preferably, the surface of the fixing plate 3 facing the inside of the frame body has a striped rubber layer to enhance the friction between the fixing plate 3 and the cargo in the box.

[0024] The second bracket 2, located on the higher side of the two quadrilateral frames, has a jack support frame 4 on its side away from the interior of the frame body. Each jack support frame 4 has a slot 5 on its lower side for engaging the jack. Specifically, as shown... Figure 2 As shown, the jack support frame 4 adopts a T-shaped structure and is made of carbon steel. Two right-angled sides of the jack support frame 4 are fixed to the outer side of the second bracket 2 by welding, and three equally spaced slots 5 are provided on the lower side of the other right-angled side as the force-bearing points at the upper end of the jack.

[0025] The second bracket 2, located on the lower side of the two quadrilateral frames, has a hook support frame 6 on the side away from the interior of the frame body. Each hook support frame 6 has a slot 7. The slot 7 has a hook 8 for vertically lifting the box cargo. The top of the hook 8 is a limiting part. A spring 9 is sleeved on the hook 8 between the hook support frame 6 and the limiting part.

[0026] Specifically, such as Figure 3 As shown, the T-hook support frame 6 adopts a T-shaped structure and is made of carbon steel. Two right-angled sides of the T-hook support frame 6 are fixed to the outer side of the second bracket 2 by welding, and the lower side of the other right-angled side has three equidistant slots 7 (such as countersunk holes) for the T-hooks 8 to pass through. The length 6 of the T-hook support frame and the number of T-hooks 8 can be adjusted according to actual needs based on the weight of the goods in the container.

[0027] like Figure 4As shown, the supporting wheel system includes a connecting frame 10, a wheel mounting arm 11, and a wheel 12. The first bracket 1, located on the higher side of the quadrilateral frame, is equipped with the connecting frame 10. The connecting frame 10 is equipped with a detachable wheel mounting arm 11, and the other end of the wheel mounting arm 11 is fixed with a wheel 12. Specifically, the wheel mounting arm 11 is detachably connected to the connecting frame 10 by a pin and a retaining spring.

[0028] The steps for using this device are as follows: S1. Pre-assembly of the main frame: Assemble the main frame into an open shape. Based on the actual condition of the cargo, determine the intersection angle of the two first supports 1 on one side and fix them with bolts. Simultaneously install the four connected second supports 2, leaving the two first supports 1 on the other side uninstalled, forming a U-shaped open structure. Place the pre-assembled frame onto the appropriate position outside the cargo box, and adjust the fixing plate 3 on the inner side of the assembled frame to fit snugly against the cargo box. Secure the fixing plate 3 to tightly clamp the cargo box. Then install the two reserved first supports 1 on the other side, assembling the complete closed structure of the main frame.

[0029] Since the components of the main frame in this application are detachable, its usage is quite flexible and not limited to the methods described above. Alternatively, the positions of each component of the main frame can be determined around the outer edge of the cargo box, and then they can be assembled directly in sequence, ensuring that the fixing plate 3 on the inner side of the second bracket 2 is attached and firmly clamps the cargo box. If the equipment height is low, the complete main frame can also be assembled and then fitted over the cargo box from above, and the angles and connections of each component can be adjusted in sequence so that the main frame completely covers the outside of the cargo box.

[0030] S2, Lifting cargo from one side of the container: Due to the weight of the cargo, it is difficult to tilt it manually; therefore, a jack is required. Place the jack at the bottom of one side of the vehicle frame, aligning its top with the slot 5 on the jack support frame 4. As the jack gradually rises, the vehicle frame on that side and the fixing plate 3 will slowly tilt the cargo box. To ensure safety and stability, it is recommended to keep the tilt angle within 30° to avoid tipping over.

[0031] S3, Support wheel system installation: Once the cargo on one side of the container reaches the appropriate tilt angle, adjust the support wheel system on that side. After adjusting to the appropriate position, install the wheel mounting arm 11 onto the connecting frame 10, ensuring that the wheel 12 is in full contact with the ground. Then, lock the wheel mounting arm 11 with pins and snap rings to ensure structural stability.

[0032] S4. T-hook supports the bottom of the container for cargo: The T-hook 8 is inserted through the slot 7 on the second support 8, hooking the lower part of the container cargo that has been lifted off the ground. As the jack is slowly lowered, the spring 9 is compressed under the weight of the container cargo, and the T-hook 8 generates a stable vertical supporting force, providing vertical support for the equipment and effectively enhancing the fixation strength and safety of the equipment during the transfer process.

[0033] S5, Lifting and supporting wheel system installation of cargo on the other side: Use the same operating method as S2~S4 to handle the cargo on the other side of the container, that is: use a jack to lift the cargo on the other side of the container, adjust wheel 12 to the ground position and lock it, hook hook 8 after it is hooked on the bottom of the cargo, slowly remove the jack to complete the lifting process on this side.

[0034] After the operations on both sides are completed, the container is stable and reliable, mainly supported by two forces: one is the vertical lifting force generated by the hooks on both sides at the bottom; the other is the lateral pressure and friction exerted by the adjustable angle fixing plates 3 on both sides on the outer wall of the container and the cargo. In this state, the container and cargo are stable and reliable, and can be directly pushed horizontally to be transferred to the target location.

[0035] Once the goods are delivered to the designated location, they need to be safely and smoothly placed on the ground. The procedure is as follows: Select any side of the chassis body, ensure that the jack head is aligned with slot 5, and continue to lift upwards until the wheel 12 on that side is completely off the ground. Then, pull out the connecting pin between the tire mounting arm 11 and the connecting frame 10 on that side, allowing the tire mounting arm 11 to enter a free-rotating state.

[0036] Then, slowly release the jacks to lower the cargo on that side of the container until it lands smoothly on the ground. Repeat the above steps on the other side, allowing the cargo to land on both sides in sequence until it is completely flush with the ground and at a stable, stationary position. Finally, remove the main frame, and the entire device can be removed from both sides of the cargo to complete the handling operation.

[0037] In order to accommodate boxes of different widths, a number of first connecting through holes 16 are provided at both ends of a single first support 1 along the length of the first support 1, so as to flexibly adjust the length of the first support 1 covering the box of goods.

[0038] As a preferred embodiment, a plurality of mounting holes for pin installation are provided on a single connecting frame 10 along the length of the connecting frame 10, so as to flexibly adjust the ground clearance of the frame body and the cargo box.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of implementation of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and all such improvements and modifications should be covered within the protection scope of this utility model.

Claims

1. A low-clearance heavy-duty box-shaped cargo lifting and transfer device, characterized in that, Including the main frame and the supporting wheel system; The frame body includes two quadrilateral frames, each quadrilateral frame including two parallel first supports (1) and two parallel second supports (2), and adjacent first supports (1) and second supports (2) are detachably connected; The two first supports (1) at the corresponding ends of the two quadrilateral frames are arranged in a scissor-like manner and are detachable at the connection; the two quadrilateral frames are staggered and nested to form a space for fixing the boxed goods; The second bracket (2) is hinged to a fixing plate (3) for clamping the box cargo on the side facing the inside of the frame body, and the fixing plate (3) is parallel to the second bracket (2); The second bracket (2) located on the higher side of the two quadrilateral frames is provided with a jack support frame (4) on the side away from the interior of the frame body. A slot (5) for engaging the jack is provided on the lower side of each jack support frame (4). The second bracket (2) located on the lower side of the two quadrilateral frames has a hook support frame (6) on the side away from the interior of the frame body. Each hook support frame (6) has a slot (7). The slot (7) has a hook (8) for vertically lifting the box cargo. The top of the hook (8) is a limiting part. A spring (9) is sleeved on the hook (8) between the hook support frame (6) and the limiting part. The support wheel system includes a connecting frame (10), a wheel mounting arm (11), and a wheel (12); the connecting frame (10) is provided on the first bracket (1) on the higher side of the quadrilateral frame, and the connecting frame (10) is provided with a detachable wheel mounting arm (11), and the other end of the wheel mounting arm (11) is fixed with a wheel (12).

2. The low-clearance heavy-duty box-type cargo lifting and transfer device according to claim 1, characterized in that, The first bracket (1) has a first connecting through hole (16) at both ends, and the second bracket (2) has a second connecting through hole (17) at both ends that cooperates with the first connecting through hole (16) for connecting with the first bracket (1) by bolts.

3. The low-clearance heavy-duty box-type cargo lifting and transfer device according to claim 2, characterized in that, A plurality of first connecting through holes (16) are provided at both ends of a single first bracket (1) along the length direction of the first bracket (1).

4. The low-clearance heavy-duty box-type cargo lifting and transfer device according to claim 1, characterized in that, The fixing plate (3) has several lugs (13) on one side. The second bracket (2) is fixed with ear plates (14) that cooperate with the lugs (13). Each lug (13) has an ear plate (14) on each side. The ear plates (14) are detachably connected to the lugs (13).

5. The low-clearance heavy-duty box-type cargo lifting and transfer device according to claim 1, characterized in that, The wheel mounting arm (11) is detachably connected to the connecting frame (10) by means of a pin and a snap ring.

6. A low-clearance heavy-duty box-type cargo lifting and transfer device according to claim 5, characterized in that, A plurality of mounting holes for mounting the pins are provided on a single connecting frame (10) along the length direction of the connecting frame (10).

7. The low-clearance heavy-duty box-type cargo lifting and transfer device according to claim 1, characterized in that, The fixing plate (3) has a striped rubber layer on the side of the frame body facing the inside.

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