Flexible automobile container lifting appliance system and lifting method

Abstract

The invention discloses a flexible automobile container lifting appliance system and a lifting method. The system comprises a lifting frame and a lifting frame, the hanging frame comprises a frame body, two position-adjustable hanging rods, a hanging ring, a chain, a butterfly buckle and a powerful ring, and four longitudinal sliding mechanisms are arranged at the two ends of the top of the frame body; the hanging bracket comprises a connecting device, a hanging bracket body and a supporting device, and a flexible supporting block is arranged on the supporting device; flexible movement of the hanging bracket in the Y direction is achieved through sliding of the connecting device on the sliding mechanism, powerful flexibility and universality are given to the hanging tool system through X-direction position adjustment of the hanging bracket body on the connecting device and X-direction position adjustment of the supporting device on the hanging bracket body, and the hanging tool system can be flexibly matched with containers of various sizes; the hoisting problem caused by size difference of containers in a traditional hoisting mode is effectively solved; and through application of the flexible supporting blocks, damage to the appearance of the container in the hoisting process is avoided, and the stability of the container is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile assembly and manufacturing, and more particularly, relates to a flexible automobile cargo box sling system and a slinging method. Background Art

[0002] In the manufacturing process of automobile cargo boxes, the traditional lifting method typically uses two slings that pass through the bottom of the box from front to back, enclosing the entire box for lifting. However, due to the limited space between the box and the chassis, it is difficult to accurately determine the sling position to ensure a stable lifting of the box. This often causes the box to shake during the lifting process, posing a significant safety risk.

[0003] Furthermore, after lifting and assembly, the slings need to be threaded in and out of the bottom of the container. This is a complex and difficult process, consuming significant manpower and time, and significantly impacting production efficiency. Furthermore, during the lifting process, the slings can easily press against the side panels of the container, causing paint peeling and deformation. This can result in product quality failing to meet established standards and placing an additional burden on the company to handle defective products.

[0004] Although there are currently car body hoists that can achieve stable lifting to a certain extent, in actual use, the hoist can only move along a fixed track, has a narrow scope of application, and can only fit cargo boxes of specific sizes. This greatly limits its application in diverse automobile cargo box lifting scenarios and is difficult to meet the current production needs of automobile manufacturers for multiple varieties, small batches, and flexible lifting.

[0005] Therefore, there is an urgent need for a more versatile, flexible and reliable automobile cargo box spreader to overcome the above problems. Summary of the Invention

[0006] In response to the above defects or improvement needs of the prior art, the present invention provides a flexible automobile cargo box sling system and a hoisting method. Through the innovative design of the hoisting frame and the hanger, efficient and stable hoisting of the automobile cargo box is achieved, and the safety and reliability of the hoisting process are significantly improved. Through the ingenious combination of the adjustable pressure plate assembly and the sliding mechanism, the sling system is given strong flexibility and versatility, so that it can flexibly adapt to cargo boxes of various sizes, effectively solving the hoisting problems caused by differences in cargo box sizes in traditional hoisting methods, and expanding the scope of application of the sling. Through the application of polyurethane blocks, not only is damage to the appearance of the cargo box avoided during the hoisting process, but the stability of the cargo box is also improved, and the defective rate of the product is reduced. Overall, the present application greatly reduces the difficulty and cost of hoisting operations, improves production efficiency, brings significant technological progress to the field of automobile cargo box production and manufacturing, and has a high value for promotion and application.

[0007] In order to achieve the above-mentioned object, one aspect of the present invention provides a flexible automobile cargo box sling system, comprising a sling frame and a sling; wherein,

[0008] The hanging frame includes a frame body, two hangers arranged at the top of the frame body in a parallel and spaced manner and in an adjustable manner; a lifting ring is provided on the top of each end of the hanger, a chain is connected to each lifting ring, all chains are focused on a butterfly buckle, and a strong ring provided on the butterfly buckle is connected to the overhead crane hook; four longitudinal sliding mechanisms are symmetrically distributed at both ends of the top of the frame body; the hanger is symmetrically arranged at the left and right ends of the frame body; the hanger includes a connecting device that is slidably configured on the two sliding mechanisms at the same end of the frame body, a hanger body with adjustable horizontal position is provided vertically downward on the connecting device, and two position-adjustable support devices are vertically provided on the inner side of the bottom of the hanger body, and the two support devices are kept parallel to the frame body; the support device is provided with a flexible support block for stably supporting the cargo box;

[0009] The flexible movement of the hanger in the Y direction is achieved by the sliding of the connecting device on the sliding mechanism; the X-direction position adjustment of the hanger body on the connecting device and the X-direction position adjustment of the support device on the hanger body can adapt to the lifting requirements of cargo boxes of different sizes, and the stable support of the cargo box is achieved by the flexible support blocks on the support device.

[0010] Furthermore, the connecting device includes a connecting beam arranged parallel to the suspension rod, a slider connecting plate respectively arranged at both ends of the bottom of the connecting beam, and two sliders arranged at the bottom of the slider connecting plate; the two sliders are slidably connected to the sliding mechanism.

[0011] Furthermore, the hanger body includes two second adjustable pressure plate assemblies arranged transversely on the connecting beam, a vertical support rod arranged at the bottom of the second adjustable pressure plate assembly, and a connecting rod arranged between the bottoms of the two vertical support rods.

[0012] Furthermore, the support device includes two third adjustable pressure plate assemblies arranged on the connecting rod, a horizontal support beam arranged vertically on the side of the third adjustable pressure plate assembly, and a polyurethane block arranged at the top end of the horizontal support beam.

[0013] Furthermore, the boom and the frame body are connected via a first adjustable pressure plate assembly; the first adjustable pressure plate assembly, the second adjustable pressure plate assembly, and the third adjustable pressure plate assembly have the same structure, and all include upper and lower pressure plates arranged in parallel and spaced relation, and a plurality of connecting bolts passing through the upper and lower pressure plates.

[0014] Furthermore, the bottom of the lifting ring is a threaded column, the threaded column passes downward through the lifting rod, and the other end is tightened and fixed by a nut.

[0015] Furthermore, the frame body includes two longitudinal rods arranged in parallel and spaced apart and a transverse rod vertically arranged at both ends of the two longitudinal rods to connect the two longitudinal rods; the sliding mechanism includes a slide rail base plate arranged on the upper surface of both ends of each longitudinal rod, a slide rail arranged on the top of the slide rail base plate, and a slider block plate arranged at the end of the slide rail flush with the longitudinal rod; the slider is used in conjunction with the slide rail on the sliding mechanism.

[0016] Furthermore, lower protection is provided at the bottom of the two longitudinal bars of the frame body; the lower protection is made of polyurethane glue.

[0017] Furthermore, the polyurethane block and the horizontal supporting beam are connected via a fixing plate;

[0018] The polyurethane blocks at the ends of the two horizontal support beams on the same support device have different shapes, one is a U-shaped structure and the other is an L-shaped structure;

[0019] The U-shaped structure is opened upward and supported on the bottom beam of the cargo box; the L-shaped structure is horizontally inverted at the end of the horizontal supporting beam; the upper surface of the L-shaped structure contacts the bottom of the cargo box, and the side surface contacts the side surface of the bottom beam of the cargo box.

[0020] A second aspect of the present invention provides a flexible automobile cargo box lifting method, which is implemented using the flexible automobile cargo box lifting device system, and includes the following steps:

[0021] S1. Preliminary preparation: Put the strong ring of the flexible automobile cargo box lifting system on the hook of the overhead crane equipment, connect it to the chain through the butterfly buckle, and then connect the chain to the lifting ring through the butterfly buckle. Adjust the position of the butterfly buckle on each chain to ensure the stability of the center of gravity of the tooling;

[0022] S2. Lifting and shifting of the spreader: Use an overhead crane to lift the flexible automobile cargo box spreader system as a whole and move it to just above the cargo box, then slowly lower the spreader system;

[0023] S3. Push the hanger open: During the lowering process, the operator pushes the hanger open to both sides along the slide rail to ensure the Y-axis opening size;

[0024] S4. Spreader positioning and support: After the spreader system is moved to the container lifting position, push the hanger inward along the slide rails and lift it upward using the overhead crane so that the polyurethane blocks on the hanger support device are in pre-contact with the bottom of the container and provide support;

[0025] S5. Trial lifting and position determination: Perform a trial lift based on the selected container lifting support position to determine the exact position of the hanger body and the horizontal support beam, ensuring that the spreader system is in the optimal support position for the container and that all chains remain taut.

[0026] S6. Cargo box unloading: After the cargo box is safely lowered to the frame suspension, bolts are used to fasten the cargo box and the frame suspension to complete the cargo box unloading process;

[0027] S7. Spreader separation: Use the overhead crane to properly lower the spreader system. The operator pushes the hanger to open it outward along the slide rail to ensure that the hanger's opening size meets the requirements. Finally, the spreader system is moved horizontally toward the rear of the vehicle to achieve complete separation of the spreader system and the cargo box. The vehicle can smoothly transfer to the next process.

[0028] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0029] (1) The flexible automobile cargo box sling system and hoisting method of the present invention can easily adapt to the hoisting of automobile cargo boxes of various sizes through the ingenious design of the hoisting frame and the hanger. The left and right sliding configuration of the hanger and the position adjustability of the hanger body and the supporting device allow the entire system to be flexibly adjusted according to the size of the cargo box, achieving stable hoisting of cargo boxes of different specifications, greatly broadening the scope of application of the sling and meeting the production needs of automobile manufacturers for multiple varieties and small batches. The present invention simplifies the hoisting operation process, eliminates the cumbersome operation of threading the sling in and out in the traditional hoisting method, greatly reduces the difficulty of operation, saves manpower and time costs, and thus significantly improves production efficiency. The present invention can reduce the increase and switching of tooling, effectively reduce production costs, and bring considerable economic benefits to automobile manufacturers.

[0030] (2) The flexible automobile cargo box sling system and lifting method of the present invention can accurately ensure the stability of the center of gravity of the tooling by adjusting the butterfly buckle on the chain during the lifting process, so that the sling and the cargo box remain in a balanced state; in addition, the polyurethane blocks on the supporting device are in close contact with the bottom of the cargo box, providing a stable support, effectively avoiding the shaking of the cargo box during the lifting process, and significantly improving the stability and safety of the lifting; the use of polyurethane blocks effectively avoids the squeezing of the cargo box side panels by the sling, thereby preventing the cargo box from peeling off, deformation and other problems during the lifting process, significantly improving product quality, and reducing the company's burden of handling defective products.

[0031] (3) The flexible automobile cargo box lifting device system and lifting method of the present invention, the design of the first adjustable pressure plate assembly, the second adjustable pressure plate assembly and the third adjustable pressure plate assembly, make the position adjustment of the lifting rod, the hanger body and the supporting device simple and efficient, and can quickly and accurately find the optimal support position of the cargo box, further improving the lifting quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a front structural schematic diagram of a flexible automobile cargo box sling system according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of a flexible automobile cargo box sling system according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the overall structure of a lifting frame of a flexible automobile cargo box lifting system according to an embodiment of the present invention;

[0035] Figure 4 This is a structural schematic diagram of a connection device on a hanger of a flexible automobile cargo box hanger system according to an embodiment of the present invention;

[0036] Figure 5 This is a structural schematic diagram of a hanger body on a hanger of a flexible automobile cargo box hanger system according to an embodiment of the present invention;

[0037] Figure 6 This is a structural schematic diagram of a support device on a hanger of a flexible automobile cargo box sling system according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the working state structure of a flexible automobile cargo box sling system according to an embodiment of the present invention;

[0039] Figure 8 The figure is a flow chart of a flexible automobile cargo box lifting method according to an embodiment of the present invention.

[0040] In all the drawings, the same figure marks represent the same technical features, specifically: 1-hanging frame, 2-hanger, 11-frame body, 12-hanging rod, 121-hanging ring, 122-chain, 123-butterfly buckle, 13-strong ring, 14-first adjustable pressure plate assembly, 15-slide rail base plate, 16-slide rail, 161-slider blocking plate, 17-lower protection, 21-connecting device, 211-connecting beam, 212-slider connecting plate, 213-slider, 214-bolt hole, 22-hanger body, 221-second adjustable pressure plate assembly, 222-vertical support rod, 223-connecting rod, 23-support device, 231-third adjustable pressure plate assembly, 232-horizontal support beam, 233-polyurethane block, 234-fixed plate. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0042] In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, when an element is referred to as being "fixed on", "set on" or "provided on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element; the terms "installed", "connected", "connected", and "provided with" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, it may be a connection between the internal parts of the two elements or an interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] like Figure 1-Figure 7 As shown, one aspect of the present invention provides a flexible automobile cargo box sling system, comprising a sling frame 1 and a sling 2; two slings 2 are arranged in the lateral direction ( Figure 2The hanging frame 1 is symmetrically arranged on both sides of the midline of the width direction of the hanging frame shown; the hanging frame 1 includes a frame body 11, two hanging rods 12 arranged at the top of the frame body 11 in a parallel and adjustable manner, hanging rings 121 respectively provided on the top of the two ends of the hanging rod 12, a chain 122 provided on each of the hanging rings 121, a butterfly buckle 123 connected to all the chains 122, and a strong ring 13 provided on the butterfly buckle 123 for connecting with the overhead crane hook; four longitudinal sliding mechanisms are symmetrically provided on both ends of the top of the frame body 11; the hanging rod 12 and the frame body 11 are connected by a first adjustable pressure plate assembly 14; the hanger 2 is aligned with the left and right ends of the frame body 11 The hanger 2 includes a connecting device 21 that is slidably arranged on two sliding mechanisms at the same end of the frame body 11, a hanger body 22 that is vertically downwardly arranged on the two connecting devices 21, and two supporting devices 23 that are vertically arranged on the inner side surfaces of the bottom of the two hanger bodies 22; the two supporting devices 23 are arranged parallel to the frame body 11; the connecting device 21 includes a connecting beam 211 that is parallel to the hanger rod 12, a slider connecting plate 212 that is respectively provided at the two ends of the bottom of the connecting beam 211, and two sliders 213 that are provided at the bottom of the slider connecting plate 212; the two sliders 213 are slidably connected to the sliding mechanism; the hanger body The body 22 includes two second adjustable pressure plate assemblies 221 arranged transversely on the connecting beam 211, a vertical support rod 222 arranged at the bottom of the second adjustable pressure plate assembly 221, and a connecting rod 223 arranged between the bottoms of the two vertical support rods 222; the supporting device 23 includes two third adjustable pressure plate assemblies 231 arranged on the connecting rod 223, a horizontal support beam 232 arranged vertically on the side of the third adjustable pressure plate assembly 231, and a polyurethane block 233 arranged at the top end of the horizontal support beam 232; the first adjustable pressure plate assembly 14, the second adjustable pressure plate assembly 221, and the third adjustable pressure plate assembly 231 have the same structure, all of which include upper and lower adjustable pressure plates arranged in parallel and spaced apart. The pressure plate and the lower pressure plate are connected through a plurality of connecting bolts provided on the upper and lower pressure plates; the present invention realizes efficient lifting of the automobile cargo box through the coordinated cooperation of the hanging frame 1 and the hanger 2; the Y-direction (left and right) movement of the hanger 2 on the frame body 11 is realized by the sliding connection between the slider 213 on the connecting device 21 and the sliding mechanism; the hanger body 22 is connected to the connecting beam 211 through the second adjustable pressure plate assembly 221, and its X-direction (forward and backward) movement on the connecting beam 211 can be adjusted; the supporting device 23 is connected to the hanger body 22 through the third adjustable pressure plate assembly 231, and the bottom of the cargo box is supported by the polyurethane block 233 at the top end of the horizontal support beam 232, thereby realizing stable support of the cargo box;The first adjustable pressure plate assembly 14 is connected to the frame body 11 to adjust the Y-axis position of the boom 12 on the frame body 11. Adjusting the bolts on the second and third adjustable pressure plate assemblies 221 and 231 respectively adjusts the X-axis (forward and backward) position of the hanger body 22 and the support device 23, thereby adapting to the lifting requirements of cargo boxes of different sizes and improving the flexibility of the spreader system.

[0044] Furthermore, if Figure 1-Figure 7 As shown, the frame body 11 is a square steel structure, forming a support frame, with reinforcing ribs welded at the corners; the strong ring 13 is connected to the overhead crane hook to facilitate lifting operations; the upper end of the chain 122 is connected to the strong ring 13 through a butterfly buckle 123, and the lower end of the chain 122 is connected to the lifting ring 121 through a butterfly buckle 123. The vertical height of the tooling can be adjusted by adjusting the length of the chain; the butterfly buckle 123 is provided at the end of the chain 122 away from the lifting ring 121; the bottom of the lifting ring 121 is a threaded column, which passes downward through the suspension rod 12, and the other end is tightened and fixed by a nut.

[0045] Furthermore, if Figure 1-Figure 7 As shown, the two booms 12 are arranged in parallel and spaced apart between the sliding mechanisms at both ends of the frame body 11; the boom 12 is a square tube structure, placed above the frame body 11, and fixed to the frame body 11 through a first adjustable pressure plate assembly 14; by adjusting the bolts on the first adjustable pressure plate assembly 14, the Y-direction position of the boom 12 on the frame body 11 can be synchronously adjusted, the center of gravity of the sling and the cargo box can be accurately controlled, and the lifting stability can be improved.

[0046] Furthermore, if Figure 1-Figure 7 As shown, the frame body 11 includes two longitudinal bars arranged in parallel and spaced apart and a cross bar vertically provided at both ends of the two longitudinal bars to connect the two longitudinal bars; the sliding mechanism includes a slide rail base plate 15 provided on the upper surface of both ends of each longitudinal bar, a slide rail 16 provided on the top of the slide rail base plate 15, and a slider block 161 provided at the end of the slide rail 16 flush with the longitudinal bar; the limiting effect is achieved by the slider block 161; a lower protection 17 is provided at the bottom of the two longitudinal bars of the frame body 11; the lower protection 17 is made of polyurethane glue and is used to prevent the cargo box from colliding with the frame body 11, thereby playing a protective role.

[0047] Furthermore, if Figure 1-Figure 7 As shown, the two sliders 213 on the connecting device 21 are arranged at intervals; the connecting beam 211 is a square steel structure, and the slider connecting plate 212 is fixed to the connecting beam 211 by welding; bolt holes 214 are symmetrically arranged on the slider connecting plate 212, and the slider 213 is fixed to the slider connecting plate 212 by bolts, and the slider 213 is used in conjunction with the slide rail 16 on the sliding mechanism.

[0048] Furthermore, if Figure 1-Figure 7 As shown, the polyurethane block 233 and the horizontal support beam 232 are connected by a fixing plate 234; the fixing plate 234 is welded and fixed to the horizontal support beam 232, and the polyurethane block 233 is fixed to the fixing plate 234 by bolts; the polyurethane blocks 233 at the ends of the two horizontal support beams 232 on the same supporting device 23 have different shapes, one is a U-shaped structure and the other is an L-shaped structure; the U-shaped structure is arranged with its opening upward and supported on the bottom beam of the cargo box, which plays a role of collision protection and limiting; the L-shaped structure is horizontally inverted at the end of the horizontal support beam 232; the upper surface of the L-shaped structure is in contact with the bottom of the cargo box, which plays a supporting role, and the side surface is in contact with the side surface of the bottom beam of the cargo box, which plays a limiting role.

[0049] Furthermore, if Figure 1-Figure 7 As shown, the hanger body 22 can adjust its X-direction (longitudinal position of the vehicle body) on the connecting beam 211 through two second adjustable pressure plate assemblies 221; the horizontal support beam 232 is fixed to the hanger body 22 through the third adjustable pressure plate assembly 231, and the X-direction (longitudinal position of the vehicle body) of the horizontal support beam 232 on the connecting rod 223 of the hanger body 22 can be adjusted by adjusting the position of the third adjustable pressure plate assembly 231 to adapt to different cargo box sizes; when lifting cargo boxes of different specifications and sizes, the Y-direction (transverse distance of the vehicle body) between the two hanger bodies 22 and the X-direction distance between the support devices 23 can be adjusted to achieve flexible use of the cargo box sling.

[0050] like Figure 8 As shown, the second aspect of the present invention provides a flexible automobile cargo box hoisting method, comprising the following steps:

[0051] S1. Preliminary preparation: Place the strong ring 13 of the flexible automobile cargo box sling system on the hook of the overhead crane equipment, connect it to the chain 122 through the butterfly buckle 123, and connect the chain 122 to the lifting ring 121 through the butterfly buckle. Adjust the position of the butterfly buckle 123 on each chain 122 to ensure the center of gravity of the tooling is stable and balanced;

[0052] S2. Lifting and shifting of the spreader: Use an overhead crane to lift the flexible automobile cargo box spreader system as a whole and move it to just above the cargo box, then slowly lower the spreader system;

[0053] S3. Pushing the hanger open: During the lowering process, the operator pushes the hanger 2 to both sides along the slide rail 16 to ensure the Y-direction opening size so that the flexible automobile cargo box spreader system can move smoothly in the X-direction of the cargo box;

[0054] S4. Positioning and supporting the spreader: After the spreader system is moved to the container lifting position, the hanger 2 is pushed inward along the slide rails 16 and lifted upward by the overhead crane so that the polyurethane block 233 on the support device 23 of the hanger 2 is in contact with the bottom of the container and provides support;

[0055] S5. Test lift and position determination: Perform a test lift based on the selected container lifting support position to determine the exact position of the hanger body 22 and the horizontal support beam 232, ensuring that the spreader system is in the optimal support position for the container. At the same time, keep each chain 122 taut to maintain the stability of the spreader and container.

[0056] S6. Cargo box unloading: After the cargo box is safely lowered to the frame suspension, bolts are used to fasten the cargo box and the frame suspension to complete the cargo box unloading process;

[0057] S7. Spreader separation: Use the overhead crane to properly lower the spreader system. The operator pushes the hanger 2 to open it outward along the slide rail 16, ensuring that the opening size of the hanger 2 meets the requirements to avoid collision with the cargo box. Finally, the spreader system is moved horizontally as a whole toward the rear of the vehicle to achieve complete separation of the spreader system and the cargo box, and the vehicle smoothly transfers to the next process.

[0058] The flexible automobile cargo box lifting system provided by the present invention has the following working principles: before lifting the cargo box, the lifting tool's strong ring is first placed on the overhead crane hook, the lifting tool is tested, the balance of the lifting tool is observed, and the length of the chain is adjusted by adjusting the position of the butterfly buckle on each chain of the lifting tool to ensure the stability of the center of gravity of the tool and maintain a stable balance. When lifting the cargo box, after the lifting tool is moved to the cargo box lifting position by the overhead crane, the lifting tool support position is pushed inward on both sides to make it contact with the bottom of the cargo box, and the optimal support position of the lifting tool can be adjusted according to the selected cargo box lifting position to keep the lifting tool chain in a taut state, thereby ensuring that the lifting tool and the cargo box remain in a relatively stable state; when lifting and disengaging, after the cargo box falls onto the frame suspension and the loading of the cargo box is completed, the overhead crane is used to lower the lifting tool to an appropriate distance, and the operator pushes the lifting tool support position outward to prevent the lifting tool from colliding with the cargo box; the mobile lifting tool is moved toward the rear of the vehicle to achieve complete separation of the lifting tool and the cargo box.

[0059] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible automobile cargo box sling system, characterized by: It comprises a hanging frame (1) and a hanging bracket (2); wherein, The hanging frame (1) comprises a frame body (11), two hanging rods (12) arranged at the top of the frame body (11) in a parallel and spaced manner and in an adjustable position; a hanging ring (121) is provided at the top of each end of the hanging rod (12), a chain (122) is connected to each hanging ring (121), all chains (122) are focused on a butterfly buckle (123), and a strong ring (13) provided on the butterfly buckle (123) is connected to a crane hook; four longitudinal sliding mechanisms are symmetrically distributed at both ends of the top of the frame body (11); the hanger (2) is arranged on the top of the frame body (11) The left and right ends of the frame body (11) are symmetrically arranged; the hanger (2) includes a connecting device (21) configured to slide left and right on two sliding mechanisms at the same end of the frame body (11); a hanger body (22) with adjustable horizontal position is vertically downwardly provided on the connecting device (21); two position-adjustable support devices (23) are vertically provided on the inner side surface of the bottom of the hanger body (22); the two support devices (23) are kept parallel to the frame body (11); and a flexible support block for stably supporting the cargo box is provided on the support device (23); The flexible movement of the hanger (2) in the Y direction is achieved by sliding the connecting device (21) on the sliding mechanism; the X-direction position adjustment of the hanger body (22) on the connecting device (21) and the X-direction position adjustment of the support device (23) on the hanger body (22) are adapted to the lifting requirements of cargo boxes of different sizes, and the stable support of the cargo box is achieved by the flexible support blocks on the support device (23).

2. The flexible automobile cargo box sling system according to claim 1, characterized in that: The connecting device (21) comprises a connecting beam (211) arranged parallel to the suspension rod (12), a slider connecting plate (212) respectively arranged at both ends of the bottom of the connecting beam (211), and two sliders (213) arranged at the bottom of the slider connecting plate (212); the two sliders (213) are slidably connected to the sliding mechanism.

3. The flexible automobile cargo box sling system according to claim 2, characterized in that: The hanger body (22) comprises two second adjustable pressure plate assemblies (221) arranged transversely on the connecting beam (211), a vertical support rod (222) arranged at the bottom of the second adjustable pressure plate assemblies (221), and a connecting rod (223) arranged between the bottoms of the two vertical support rods (222).

4. The flexible automobile cargo box sling system according to claim 3, characterized in that: The supporting device (23) comprises two third adjustable pressure plate assemblies (231) arranged on the connecting rod (223), a horizontal supporting beam (232) arranged vertically on the side of the third adjustable pressure plate assembly (231), and a polyurethane block (233) arranged on the top end of the horizontal supporting beam (232).

5. The flexible automobile cargo box sling system according to claim 4, characterized in that: The suspension rod (12) and the frame body (11) are connected via a first adjustable pressure plate assembly (14); the first adjustable pressure plate assembly (14), the second adjustable pressure plate assembly (221), and the third adjustable pressure plate assembly (231) have the same structure, and all include upper and lower pressure plates arranged in parallel and spaced relation, and a plurality of connecting bolts provided through the upper and lower pressure plates.

6. A flexible automobile cargo box sling system according to any one of claims 1 to 5, characterized in that: The bottom of the hanging ring (121) is a threaded column, which passes downward through the hanging rod (12) and the other end is tightened and fixed by a nut.

7. A flexible automobile cargo box sling system according to any one of claims 2 to 5, characterized in that: The frame body (11) includes two longitudinal bars arranged in parallel and spaced apart, and a transverse bar respectively arranged perpendicularly at both ends of the two longitudinal bars to connect the two longitudinal bars; the sliding mechanism includes a slide rail base plate (15) arranged on the upper surface of both ends of each longitudinal bar, a slide rail (16) arranged on the top of the slide rail base plate (15), and a slider block plate (161) arranged at the end of the slide rail (16) flush with the longitudinal bar; the slider (213) is used in conjunction with the slide rail (16) on the sliding mechanism.

8. The flexible automobile cargo box sling system according to claim 7, characterized in that: The bottoms of the two longitudinal bars of the frame body (11) are provided with lower protection (17); the material of the lower protection (17) is polyurethane glue.

9. The flexible automobile cargo box sling system according to claim 4, characterized in that: The polyurethane block (233) is connected to the horizontal support beam (232) via a fixing plate (234); The polyurethane blocks (233) at the ends of the two horizontal support beams (232) on the same support device (23) have different shapes, one is a U-shaped structure and the other is an L-shaped structure; The U-shaped structure is arranged with its opening upward and supported on the bottom crossbeam of the cargo box; the L-shaped structure is horizontally inverted at the end of the horizontal supporting crossbeam (232); the upper surface of the L-shaped structure contacts the bottom of the cargo box, and the side surface contacts the side surface of the bottom crossbeam of the cargo box.

10. A flexible automobile cargo box hoisting method, characterized in that: The flexible automobile cargo box spreader system according to any one of claims 1 to 9 is used for implementation, comprising the following steps: S1. Preliminary preparation: Put the strong ring (13) of the flexible automobile cargo box sling system on the hook of the overhead crane equipment, connect it to the chain (122) through the butterfly buckle (123), and then connect the chain (122) to the lifting ring (121) through the butterfly buckle. Adjust the position of the butterfly buckle (123) on each chain (122) to ensure the stability of the center of gravity of the tooling; S2. Lifting and shifting of the spreader: Use an overhead crane to lift the flexible automobile cargo box spreader system as a whole and move it to just above the cargo box, then slowly lower the spreader system; S3, push the hanger open: During the lowering process, the operator pushes the hanger (2) to both sides along the slide rail (16) to ensure the Y-axis opening size; S4. Positioning and supporting the sling: After the sling system is moved to the cargo box hoisting position, the hanger (2) is pushed inward along the slide rail (16) and lifted upward by the overhead crane so that the polyurethane block (233) on the supporting device (23) of the hanger (2) is in pre-contact with the bottom of the cargo box and provides support; S5. Trial lifting and position determination: a trial lifting is performed according to the selected container lifting support position to determine the accurate position of the hanger body (22) and the horizontal support beam (232), ensuring that the sling system is in the optimal supporting position for the container and that each chain (122) is kept taut; S6. Cargo box unloading: After the cargo box is safely lowered to the frame suspension, bolts are used to fasten the cargo box and the frame suspension to complete the cargo box unloading process; S7. Spreader separation: Use the overhead crane to properly lower the spreader system. The operator pushes the hanger (2) to open it outward along the slide rail (16), ensuring that the opening size of the hanger (2) meets the requirements. Finally, the spreader system is moved horizontally toward the rear of the vehicle to achieve complete separation of the spreader system and the cargo box. The vehicle smoothly transfers to the next process.

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