A sling support structure and a sling

Abstract

The utility model discloses a kind of spreader support structure and spreader, it is related to spreader technical field, the utility model includes portal frame, eight guide supports are connected in the both sides of portal frame, and four springs are connected between the top of eight guide supports and portal frame, two middle plates are connected in the bottom of eight guide supports, and two anti-skid mats are connected in the bottom of two middle plates by two mounting plates;Four pulleys and two groups of hanging rods are connected in the both sides of portal frame, and two anti-off plates are connected in the side of four pulleys.The utility model is set through pull rope, hook, pulley, limit plate and hanging rod, pull rope is designed as M shape, the transmission direction of force can be changed with cooperation pulley, staff only needs to pull down the middle end of pull rope in left and right sides, can be guided support up by pull rope left and right end, change four corners operation to two sides operation, simplify the operation process of spreader limit release;Optimize the operation convenience and reliability of spreader support structure.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to a lifting equipment support structure and a lifting equipment. Background Technology

[0002] Lifting equipment is used in industries such as manufacturing and warehousing to assist in the lifting and handling of heavy objects. It is usually based on a frame structure, combined with moving parts, support and limiting structures and lifting components, which can realize the lifting, horizontal movement and other operations of heavy objects. Its overall design needs to take into account both structural stability and ease of operation to adapt to the heavy object handling needs in different scenarios. It is a common tool to reduce the burden of manual handling and improve work efficiency.

[0003] Hand chain hoists are a common type of lifting system. Their working principle is that the chain is manually pulled, which drives the internal transmission structure of the main body to operate, thereby raising and lowering the hook to complete the lifting and lowering of heavy objects. Hand chain hoists are usually used in conjunction with frame structures such as gantry cranes. They do not rely on external power such as electricity and are suitable for lifting small to medium-weight heavy objects. They are widely used in scenarios where there is no power source or the working space is limited. The existing hand-operated hoist with caster-type movable gantry crane requires the bottom caster brakes or additional support legs to ensure stability when hoisting heavy objects. However, the casters and support legs are mostly distributed at the four corners of the hoist, requiring workers to operate around the hoist. Moreover, many components are located at the bottom of the hoist. For example, the brake pedal of the caster will rotate horizontally with the caster to the bottom of the gantry, making it difficult to step on. This results in a cumbersome, time-consuming, and labor-intensive operation process. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a lifting support structure and lifting device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting device support structure, including a gantry frame, eight guide brackets connected to both sides of the gantry frame, and four springs connected between the top of the eight guide brackets and the gantry frame; two intermediate plates connected to the bottom of the eight guide brackets, and two anti-slip pads connected to the bottom of the two intermediate plates via two mounting plates; four pulleys and two sets of hanging rods connected to both sides of the gantry frame, and two anti-detachment plates connected to one side of the four pulleys; two limiting plates fixed to one side of the two sets of hanging rods; two pull ropes connected between the four pulleys and four of the guide brackets, and six hooks connected to the ends of the two pull ropes; four casters connected to both sides of the bottom of the gantry frame.

[0006] By adopting the above technical solutions, the casters facilitate the overall movement of the gantry frame, enabling flexible adjustment of the lifting equipment's working position; the pull rope, pulley, and guide bracket work together to move the anti-slip mat upwards and off the ground, relieving ground constraints during movement; the spring, guide bracket, intermediate plate, and mounting plate work together to drive the anti-slip mat downwards to fit against the ground, reducing displacement when lifting heavy objects with the help of the anti-slip mat's friction; the hanging rod, hook, and limit plate work together to fix the position of the pull rope, ensuring that the anti-slip mat remains stably detached or attached. The overall structure eliminates the need for operation around the four corners of the gantry frame, greatly simplifying the switching process between lifting equipment stability and movement.

[0007] Furthermore, the longitudinal section of the guide bracket is C-shaped, and the guide bracket is slidably connected to the gantry frame.

[0008] By adopting the above technical solution, the C-shaped structure can form a suitable sliding contact surface with the gantry, restricting the horizontal displacement of the guide support, ensuring that the guide support only moves in the vertical direction of the gantry, and avoiding excessive vertical displacement of the guide support.

[0009] Furthermore, the anti-slip mat is made of rubber material, and the bottom of the anti-slip mat is provided with anti-slip texture.

[0010] By adopting the above technical solutions, the rubber material has good flexibility and elasticity, which can improve the adhesion between the anti-slip mat and the ground and reduce the contact gap caused by slight unevenness of the ground; the anti-slip texture on the bottom can increase the friction coefficient between the anti-slip mat and the ground, further enhance the anti-slip effect when hoisting heavy objects, reduce the risk of displacement of the gantry due to external forces, and improve the structural stability of the lifting equipment during operation.

[0011] Furthermore, the pull rope is a steel wire rope in the shape of an "M", and the two pull ropes are detachably connected to multiple hanging rods through two hooks.

[0012] By adopting the above technical solutions, the steel wire rope material can improve the tensile strength and durability of the rope, reducing the risk of wear and breakage after long-term use; the M-shaped structure facilitates the use of pulleys to change the direction of force transmission, so that when the worker pulls down the middle end of the rope, the guide brackets at both ends can be moved up simultaneously; the detachable connection of multiple hanging rods and hooks not only makes it easy to fix the position of the rope to keep the anti-slip pad off the ground, but also allows the slack to be compensated by switching the matching position of the hooks and hanging rods when the rope is slack, thus extending the effective service life of the rope.

[0013] Furthermore, the two pull ropes are detachably connected to four of the guide brackets via four additional hooks.

[0014] By adopting the above technical solution, the disassembly connection structure simplifies the assembly and separation process of the pull rope and the guide bracket: when the pull rope is worn and needs to be replaced, the connection between the hook and the guide bracket can be directly disassembled without disassembling the fixing structure between the guide bracket and the intermediate plate; at the same time, if the guide bracket needs to be maintained separately, the pull rope can be separated to avoid constraining the guide bracket, thereby reducing the complexity and time consumption of maintenance operations.

[0015] Furthermore, the guide bracket is detachably connected to the intermediate plate via bolts.

[0016] By adopting the above technical solution, the bolt connection enables the guide bracket and the intermediate plate to be detachably fixed: when the guide bracket is worn or deformed due to long-term sliding, the guide bracket and the intermediate plate can be separated simply by removing the connecting bolts. After replacing the new guide bracket, it can be re-fixed with bolts without disassembling the intermediate plate, mounting plate and other components, thus improving the convenience of maintenance and replacement of the guide bracket.

[0017] Furthermore, the spring is detachably connected to the guide bracket and the gantry frame, and the gantry frame and the guide bracket have protrusions in the areas corresponding to the spring positions.

[0018] By adopting the above technical solution, the disassembly and connection facilitates the replacement of springs after aging or failure, reducing the overall structure disassembly caused by spring maintenance; the protruding structure can limit the two ends of the spring, reducing the horizontal displacement of the spring during the extension and contraction process, and reducing the risk of the spring falling off between the guide bracket and the gantry frame; at the same time, the protrusion can ensure that the spring is in the preset installation position after assembly, ensuring that the preload of the spring is stably transmitted to the guide bracket, and driving the anti-slip pad to move down reliably.

[0019] Furthermore, the anti-slip pad is glued to the mounting plate with strong adhesive, and the longitudinal section of the mounting plate is U-shaped. The mounting plate is detachably connected to the intermediate plate with bolts.

[0020] By adopting the above technical solutions, the strong adhesive can enhance the connection between the anti-slip mat and the mounting plate, reducing the possibility of the anti-slip mat falling off or shifting during friction with the ground; the U-shaped mounting plate can form a wrap-around support in the middle, reducing the possibility of horizontal movement of the mounting plate; the bolt connection facilitates the disassembly and assembly of the mounting plate and the middle plate, and when the anti-slip mat is worn, the mounting plate can be directly disassembled for overall replacement, simplifying the maintenance process of the anti-slip mat.

[0021] Furthermore, the anti-detachment plate is detachably connected to the gantry frame via long bolts, and the inner ring of the pulley is rotatably connected to the long bolts via bearings.

[0022] By adopting the above technical solution, the long bolt not only fixes the anti-detachment plate to the gantry frame, but also provides an installation shaft for the pulley; the anti-detachment plate can limit the horizontal displacement of the pulley and reduce the risk of the pulley falling off the long bolt during rotation; the bearing can reduce the frictional resistance between the pulley and the long bolt, ensure that the pulley operates flexibly when the rope is pulled, ensure the efficiency of force transmission, and avoid difficulties in pulling the rope or increased wear due to pulley jamming.

[0023] A lifting device, wherein a hand chain hoist body is connected to the bottom center of the gantry frame via a mounting hook, and a hand chain and a lifting hook are respectively provided on both sides of the bottom of the hand chain hoist body.

[0024] By adopting the above technical solutions, the installation hook enables convenient connection between the main body of the hand chain hoist and the gantry frame, facilitating the assembly and disassembly of the hand chain hoist according to operational needs; the combination of the hand chain and the hook allows workers to manually pull to complete the lifting and lowering of heavy objects without relying on external power such as electricity, making it suitable for scenarios lacking power sources or with narrow working spaces; at the same time, the integrated design of the hand chain hoist enables the lifting device to have both mobile support and heavy object lifting functions, improving the overall operational capabilities of the lifting device and meeting the lifting needs of small and medium-weight heavy objects.

[0025] In summary, the present invention has the following main advantages: 1. This utility model, through the arrangement of a pull rope, hook, pulley, limiting plate, and hanging rod, features an M-shaped pull rope that, in conjunction with the pulley, can change the direction of force transmission. Operators only need to pull the middle end of the pull rope downwards on both sides to move the guide bracket upwards, changing the operation from four corners to two sides, thus simplifying the process of releasing the lifting device's limit. Simultaneously, the hook can cooperate with the hanging rod to limit the pull rope's movement, and the limiting plate prevents the hook from detaching from the hanging rod due to horizontal movement, further improving structural stability during operation and reducing the risk of operational interruption due to component displacement. With the operating components located at a higher position, operators are unlikely to need to bend deeply or squat down to operate; thus optimizing the ease of operation and reliability of the lifting device's support structure. 2. This utility model uses multiple hanging rods that are equidistantly distributed. When the pull rope becomes loose after long-term use, the operator can use the hook to engage with the next hanging rod to adjust the tension of the pull rope, ensuring that the pull rope can still maintain an effective force transmission effect. This reduces the situation where the pull rope cannot be used due to slight loosening, improves the overall durability of the lifting device support structure, extends the effective service life of the pull rope, and reduces maintenance and replacement costs. 3. This utility model, through the setting of guide bracket, spring, intermediate plate, mounting plate and anti-slip pad, the guide bracket can limit the direction of structural movement, reduce the force transmission deviation caused by offset, and ensure that the anti-slip pad only moves vertically up and down; after the spring is assembled, it is in a pre-tight state. When the hook is separated from the hanging rod, the spring can drive the guide bracket to move the anti-slip pad down, reducing the situation where the anti-slip pad is not in close contact with the ground. With the anti-slip pad made of rubber with anti-slip texture, it can enhance the friction with the ground to achieve the limit and improve the structural stability when hoisting heavy objects; the operation of limiting is simple. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the guide bracket structure of this utility model; Figure 3 This is a schematic diagram of the explosive structure of the pulley of this utility model; Figure 4 This is a schematic diagram of the pull rope structure of this utility model; Figure 5 This is a schematic diagram of the spring explosion structure of this utility model; Figure 6 This is a schematic diagram of the exploded structure of the intermediate plate of this utility model; Figure 7 This is a schematic diagram of the hanging rod structure of this utility model.

[0027] In the diagram: 1. Gantry frame; 2. Casters; 3. Mounting hook; 4. Hand chain hoist body; 5. Hand chain; 6. Hook; 7. Guide bracket; 8. Spring; 9. Intermediate plate; 10. Mounting plate; 11. Anti-slip mat; 12. Pull rope; 13. Hook; 14. Pulley; 15. Limiting plate; 16. Hanging rod; 17. Anti-detachment plate. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] The embodiments of this utility model will be described below based on its overall structure.

[0030] Example 1: A lifting device support structure, such as Figures 1-7As shown, the system includes a gantry frame 1, with eight guide supports 7 connected to both sides of the gantry frame 1. The guide supports 7 have a "C"-shaped longitudinal section and are slidably connected to the gantry frame 1. Four springs 8 connect the tops of the eight guide supports 7 to the gantry frame 1. Two intermediate plates 9 are connected to the bottom of the eight guide supports 7. Two anti-slip pads 11 are connected to the bottom of the two intermediate plates 9 via two mounting plates 10. The anti-slip pads 11 are made of rubber and have anti-slip textures on their bottoms. Moving the gantry frame 1 to the designated position requires… When lifting heavy objects, the workers remove the hook 13 from the hanging rod 16. At this time, the spring 8 between the top of the guide bracket 7 and the gantry frame 1 is released from the tension constraint, and the spring 8 drives the guide bracket 7 to move vertically downward along the gantry frame 1. During the downward movement of the guide bracket 7, the mounting plate 10 and the anti-slip pad 11 are moved downward synchronously through the intermediate plate 9 until the anti-slip pad 11 is in close contact with the ground. The rubber anti-slip pad 11, together with the anti-slip texture on the bottom, can enhance the adhesion stability with the ground through friction, thereby improving the stability of the gantry frame 1 when lifting heavy objects. The gantry frame 1 has four pulleys 14 and two sets of hanging rods 16 connected to both sides. Two anti-detachment plates 17 are connected to one side of the four pulleys 14, and two limiting plates 15 are fixed to one side of the two sets of hanging rods 16. When the guide bracket 7 moves up to a suitable height, the worker hangs the hook 13 at the middle end of the pull rope 12 on the hanging rod 16. The limiting plate 15 on one side of the hanging rod 16 can prevent the hook 13 from falling off the hanging rod 16 due to horizontal movement, thereby limiting and fixing the pull rope 12, keeping the guide bracket 7 in an upward state and the anti-slip pad 11 continuously detached from the ground. If the pull rope 12 becomes loose after long-term use, the worker can switch the hook 13 to the next hanging rod 16 and compensate for the looseness by adjusting the matching position of the hook 13 and the hanging rod 16, so that the pull rope 12 can still maintain effective force transmission, reduce the situation where it cannot be used due to slight looseness, and extend the service life of the pull rope 12. Four pulleys 14 are connected to four guide supports 7 by two pull ropes 12. The pull ropes 12 are steel wire ropes in an "M" shape. The two pull ropes 12 are detachably connected to multiple hanging rods 16 via two hooks 13. Six hooks 13 are connected to the ends of the two pull ropes 12, allowing workers to operate the pull ropes 12 from both sides of the gantry frame 1. Both pull ropes 12 are steel wire ropes in an "M" shape. The two ends of the two pull ropes 12 are connected to the four guide supports 7 via four hooks 13, and the middle part is wrapped around the pulleys 14. The pulleys 14 are rotatably connected to the long bolts on the gantry frame 1 via bearings. The anti-detachment plate 17 can limit the horizontal displacement of the pulley 14. Therefore, when the worker pulls down the middle end of the pull rope 12, the pulley 14 will change the direction of force transmission, causing the two ends of the pull rope 12 to pull the guide bracket 7 upward. Since the longitudinal section of the guide bracket 7 is C-shaped and is slidably connected to the gantry frame 1, the guide bracket 7 will move vertically upward along the gantry frame 1. After that, the guide bracket 7 will drive the anti-slip pad 11 to move upward and detach from the ground through the middle plate 9 and the mounting plate 10, releasing the initial ground contact limit. Four casters 2 are connected to the bottom sides of the gantry frame 1, and the entire structure can be moved by pushing the casters 2 on the bottom sides of the gantry frame 1.

[0031] A type of lifting device, such as Figure 1 As shown, the bottom center of the gantry frame 1 is connected to the main body 4 of the hand chain hoist via the mounting hook 3. The bottom sides of the main body 4 of the hand chain hoist are respectively equipped with a hand chain 5 and a hook 6. The operator can pull the hand chain 5 of the main body 4 of the hand chain hoist to drive its internal transmission structure to operate, thereby driving the hook 6 to rise and fall, thus completing the preparation for hoisting the heavy object.

[0032] Example 2: Based on the above embodiment 1, in order to facilitate the replacement of the pull rope 12 and the anti-detachment plate 17, the following settings are now adopted.

[0033] See Figures 1-4 In the above embodiment, the two pull ropes 12 are detachably connected to four of the guide brackets 7 via four other hooks 13. The anti-detachment plate 17 is detachably connected to the gantry frame 1 via long bolts. The inner ring of the pulley 14 is rotatably connected to the long bolts via bearings. When replacing the pull rope 12 or the pulley 14, the workers first remove the long bolts of the anti-detachment plate 17 to remove the anti-detachment plate 17 and the pulley 14. Then, the workers separate the hooks 13 from the guide brackets 7 and the hanging rods 16. After replacing the new pull ropes 12 and hooks 13, the workers reconnect the hooks 13, place the pulley 14 and ensure that the pulley 14 fits the pull rope 12. Finally, the workers place the anti-detachment plate 17 and tighten the long bolts.

[0034] Example 3: Based on the above embodiment one, in order to facilitate the replacement of the guide bracket 7, spring 8 and anti-slip pad 11, the following settings are now adopted.

[0035] See Figure 1 , Figure 2 , Figure 5 and Figure 6 In the above embodiment, the guide bracket 7 is detachably connected to the intermediate plate 9 by bolts, and the spring 8 is detachably connected to the guide bracket 7 and the gantry frame 1. The gantry frame 1 and the guide bracket 7 have protrusions corresponding to the positions of the spring 8. The anti-slip pad 11 is glued to the mounting plate 10 with strong adhesive. The mounting plate 10 has a U-shaped longitudinal section and is detachably connected to the intermediate plate 9 by bolts. When disassembling the guide bracket 7, the operator can remove the bolts connecting it to the intermediate plate 9 to separate it from the intermediate plate 9. Then, the operator places the new guide bracket 7 on top of the intermediate plate 9 and tightens it with bolts. When replacing the spring 8, the operator individually presses the spring 8 to make it... After the gantry frame 1 and the protrusion on the support are separated, the old spring 8 is removed, and the worker compresses the new spring 8 and places it between the protrusions. After placing the new spring 8, the worker can stop pressing the spring 8. After the spring 8 is assembled, it is in a pre-tightened state, which can continuously apply force to ensure that the anti-slip pad 11 is tightly attached to the ground, and cooperates with the protrusions of the gantry frame 1 and the guide support 7 to prevent the spring 8 from falling off due to horizontal displacement. When the anti-slip pad 11 is worn, the worker removes the bolts between the mounting plate 10 and the intermediate plate 9, and then removes the old mounting plate 10 with the damaged anti-slip pad 11. After that, the worker places the new mounting plate 10 with the new anti-slip pad 11 attached at the bottom of the intermediate plate 9 and limits it with bolts.

[0036] The implementation principle of this utility model is as follows: First, before moving the gantry frame 1, the operator can operate the pull ropes 12 on both sides of the gantry frame 1; both pull ropes 12 are steel wire ropes and are M-shaped. The two ends of the two pull ropes 12 are connected to the four guide brackets 7 through four hooks 13, and the middle part is wrapped around the pulley 14; the pulley 14 is rotatably connected to the long bolt on the gantry frame 1 through the bearing. The anti-detachment plate 17 on one side of the pulley 14 can limit the horizontal displacement of the pulley 14. Therefore, when the operator pulls down the middle end of the pull rope 12, the pulley 14 will change the direction of force transmission, causing the two ends of the pull rope 12 to pull the guide brackets 7 upward; since the longitudinal section of the guide bracket 7 is C-shaped and is slidably connected to the gantry frame 1, the guide bracket 7 will move vertically upward along the gantry frame 1. Then, the guide bracket 7 drives the anti-slip pad 11 to move upward and detach from the ground through the middle plate 9 and the mounting plate 10, releasing the initial ground contact limit; After the guide bracket 7 is moved to the appropriate height, the worker hangs the hook 13 at the middle end of the pull rope 12 on the hanging rod 16. The limiting plate 15 on one side of the hanging rod 16 can prevent the hook 13 from falling off the hanging rod 16 due to horizontal movement, thereby limiting and fixing the pull rope 12, keeping the guide bracket 7 in the upward position and the anti-slip pad 11 continuously off the ground. If the pull rope 12 becomes loose after long-term use, the worker can switch the hook 13 to the next hanging rod 16 and compensate for the looseness by adjusting the matching position of the hook 13 and the hanging rod 16, so that the pull rope 12 can still maintain effective force transmission, reduce the situation where it cannot be used due to slight looseness, and extend the service life of the pull rope 12. When moving the gantry frame 1 to the working position, the entire structure can be moved by the casters 2 on both sides of the bottom of the gantry frame 1. The casters 2, as existing moving parts, can easily adjust the horizontal position of the lifting device. At this time, the main body 4 of the hand-operated hoist connected by the mounting hook 3 at the bottom center of the gantry frame 1 is in the ready-to-work state. When the gantry frame 1 is moved to the designated position to lift heavy objects, the worker removes the hook 13 from the hanging rod 16. At this time, the spring 8 between the top of the guide bracket 7 and the gantry frame 1 is released from the tension constraint, and the spring 8 drives the guide bracket 7 to move vertically downward along the gantry frame 1. During the downward movement of the guide bracket 7, the mounting plate 10 and the anti-slip pad 11 are moved downward synchronously through the intermediate plate 9 until the anti-slip pad 11 is in close contact with the ground. The rubber anti-slip pad 11, together with the anti-slip texture on the bottom, can enhance the adhesion stability with the ground through friction, thereby improving the stability of the gantry frame 1 when lifting heavy objects. Afterwards, the staff can pull the chain 5 of the hand chain hoist body 4 to drive its internal transmission structure to operate, thereby driving the hook 6 to rise and fall, thus completing the preparation for hoisting the heavy object. If it is necessary to replace components such as guide bracket 7, spring 8, anti-slip pad 11, and pull rope 12; when disassembling and assembling guide bracket 7, the operator can remove the bolts connecting it to the intermediate plate 9 to separate it from the intermediate plate 9. Then, the operator places the new guide bracket 7 on top of the intermediate plate 9 and tightens it with bolts; when replacing spring 8, the operator presses spring 8 separately to separate it from the gantry frame 1 and the protrusion on the bracket. After removing the old spring 8, the operator compresses the new spring 8 and places it between the protrusions. After placing the new spring 8, the operator can stop pressing spring 8. After assembly, spring 8 is in a pre-tightened state, which can continuously apply force to ensure that the anti-slip pad 11 is in close contact with the ground and cooperates with the protrusions of the gantry frame 1 and guide bracket 7. To prevent the spring 8 from falling off due to horizontal displacement; when the anti-slip mat 11 is worn, the staff removes the bolts between the mounting plate 10 and the intermediate plate 9, then removes the old mounting plate 10 with the damaged anti-slip mat 11, and then places the new mounting plate 10 with the new anti-slip mat 11 attached at the bottom of the intermediate plate 9 and limits it with bolts; when replacing the pull rope 12 or pulley 14, the staff first removes the long bolt of the anti-detachment plate 17 and removes the anti-detachment plate 17 and pulley 14, then separates the connection between the hook 13 and the guide bracket 7 and the hanging rod 16, replaces the new pull rope 12 and hook 13, the staff reconnects the hook 13, places the pulley 14 and ensures that the pulley 14 is in contact with the pull rope 12, and finally places the anti-detachment plate 17 and tightens the long bolt.

[0037] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A spreader support structure comprising a gantry (1), characterised in that: The gantry frame (1) is connected to eight guide brackets (7) on both sides, and four springs (8) are connected between the top of the eight guide brackets (7) and the gantry frame (1). Two intermediate plates (9) are connected to the bottom of the eight guide brackets (7), and two anti-slip pads (11) are connected to the bottom of the two intermediate plates (9) through two mounting plates (10). The gantry frame (1) is connected to four pulleys (14) and two sets of hanging rods (16) on both sides, and two anti-detachment plates (17) are connected to one side of the four pulleys (14), and two limiting plates (15) are fixed to one side of the two sets of hanging rods (16). Two pull ropes (12) are connected between the four pulleys (14) and four of the guide brackets (7), and six hooks (13) are connected to the ends of the two pull ropes (12). The gantry frame (1) is connected to four casters (2) on both sides of the bottom.

2. The spreader support structure of claim 1, wherein: The guide bracket (7) has a "C" shaped longitudinal section and is slidably connected to the gantry (1).

3. The spreader support structure of claim 1, wherein: The anti-slip mat (11) is made of rubber material and has anti-slip texture on the bottom.

4. The spreader support structure of claim 1, wherein: The pull rope (12) is a steel wire rope in the shape of an "M", and the two pull ropes (12) are detached and connected to multiple hanging rods (16) respectively through two hooks (13).

5. The spreader support structure of claim 4, wherein: The two pull ropes (12) are detachably connected to four of the guide brackets (7) via four additional hooks (13).

6. The spreader support structure of claim 2, wherein: The guide bracket (7) is detachably connected to the intermediate plate (9) by bolts.

7. The spreader support structure of claim 6, wherein: The spring (8) is detachably connected to the guide bracket (7) and the gantry (1), and the gantry (1) and the guide bracket (7) are provided with protrusions in the areas corresponding to the positions of the spring (8).

8. The spreader support structure of claim 6, wherein: The anti-slip mat (11) is glued to the mounting plate (10) with strong adhesive, and the longitudinal section of the mounting plate (10) is U-shaped. The mounting plate (10) is detached and connected to the intermediate plate (9) by bolts.

9. The spreader support structure of claim 1, wherein: The anti-detachment plate (17) is detachably connected to the gantry frame (1) by long bolts, and the inner ring of the pulley (14) is rotatably connected to the long bolts by bearings.

10. A spreader comprising a spreader support structure according to any one of the preceding claims 1-9, characterized in that: The bottom center of the gantry frame (1) is connected to the main body (4) of the hand chain hoist via a mounting hook (3), and the bottom sides of the main body (4) of the hand chain hoist are respectively provided with a hand chain (5) and a hook (6).

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