Special lifting appliance for cold-formed section steel

Abstract

The utility model discloses a special lifting appliance for cold-formed section steel, which is applied to the technical field of cold-formed section steel and comprises a lifting appliance shell, a motor is bolted on one side of the lifting appliance shell, a two-way screw rotationally connected with the lifting appliance shell is bolted at the output end of the motor, threaded rings are respectively sleeved at two ends of the surface of the two-way screw in a threaded manner, and the two ends of the surface of the two-way screw are connected with the lifting appliance shell in a threaded manner. And clamp blocks are mounted at the bottoms of the two threaded rings. And when the two clamp blocks are driven to clamp the cold-formed section steel left and right, the pressing plate can be synchronously driven to move downwards, and the top of the cold-formed section steel is limited. Therefore, the cold-formed section steel is prevented from moving up and down and the hoisting transportation stability of the cold-formed section steel is improved. Different groove surfaces are formed in the surfaces of the clamp blocks according to the shape of the cold-formed section steel, and rotation adjustment is carried out, so that the two clamp blocks rotate to the groove surfaces suitable for the cold-formed section steel in the shape to clamp the cold-formed section steel. Therefore, the left side and the right side of the cold-formed section steel are fully attached, and the friction force of the clamping faces is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of cold-formed steel technology, and specifically relates to a special lifting tool for cold-formed steel. Background Technology

[0002] Cold-formed steel refers to finished steel products with various cross-sectional shapes that are bent from steel plates or strips in a cold state. Cold-formed steel is an economical, lightweight, thin-walled steel product, also known as cold-formed steel profiles or cold-formed profiles.

[0003] Currently, Chinese utility model patent CN218320201U discloses a special lifting tool for cold-formed steel. Existing cold-formed steel lifting tools typically use a left-right clamping method to secure the cold-formed steel to the bottom of the lifting tool during the lifting process. However, although the cold-formed steel is clamped and cannot move left or right during lifting, it is prone to vertical displacement due to the lack of support at the top and bottom. Furthermore, because cold-formed steel has different shapes, existing lifting tools have low clamping stability for different shapes. For example, when clamping square cold-formed steel, the contact area between the clamp and the square surface of the cold-formed steel is large, resulting in relatively stable clamping force. However, when clamping round cold-formed steel, the contact point between the plane of the clamp and the round surface of the cold-formed steel is only a small portion, resulting in very low clamping friction. This leads to a reduction in clamping force, making the lifting of cold-formed steel unstable. Utility Model Content

[0004] The purpose of this utility model is to provide a special lifting tool for cold-formed steel, which has the advantages of being easy to clamp various types of cold-formed steel and improving the stability of cold-formed steel hoisting and movement.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a special lifting tool for cold-formed steel, comprising a lifting tool housing, a motor bolted to one side of the lifting tool housing, a bidirectional screw bolted to the output end of the motor and rotatably connected to the lifting tool housing, threaded rings threaded to both ends of the surface of the bidirectional screw, clamping blocks installed at the bottom of the two threaded rings, a first bevel gear fixedly sleeved between the two threaded rings and the bidirectional screw, a second bevel gear rotatably connected to the lifting tool housing meshing at the bottom of the first bevel gear, a threaded shaft bolted to the bottom of the second bevel gear, a threaded cylinder slidably connected to the lifting tool housing threaded onto the surface of the threaded shaft, and a pressure plate bolted to the bottom of the threaded cylinder.

[0006] By employing the above technical solution, when the two clamping blocks grip the cold-formed steel on the left and right sides, the pressure plate can be moved downwards simultaneously to limit the top of the cold-formed steel. This prevents the cold-formed steel from moving up and down, improving the stability of the cold-formed steel during hoisting and transportation. By creating different grooves on the surface of the clamping blocks according to the shape of the cold-formed steel, and by rotating and adjusting them, the two clamping blocks can be rotated to the appropriate grooves for gripping the cold-formed steel. This ensures full contact between the left and right sides of the cold-formed steel, guaranteeing the friction of the clamping surfaces.

[0007] The present invention is further configured such that: the bottom of each of the two threaded rings is bolted with a fixed cover that is slidably connected to the lifting device housing; the top of each of the two clamp blocks is bolted with a connecting rod; the end of the connecting rod away from the clamp block is welded with a rotating block that is rotatably connected to the fixed cover; the surface of the fixed cover is provided with an insertion hole; a spring is bolted inside the rotating block; and the end of the spring near the insertion hole is bolted with an insertion rod that is slidably connected to the rotating block.

[0008] By adopting the above technical solution, the two clamping blocks can be rotated and adjusted to fit the groove surface of the cold-formed steel of the appropriate shape for clamping, thereby ensuring that the left and right sides of the cold-formed steel are fully fitted together and the friction of the clamping surface is guaranteed.

[0009] The present invention is further configured such that a ventilation mesh for use with the motor is bolted to the side of the lifting device housing near the motor.

[0010] The above technical solution provides ventilation and heat dissipation for the motor, while reducing the amount of dust entering the interior.

[0011] The present invention is further configured such that: a lifting ring is provided at the top of the lifting device housing, and chains that are fixedly connected to the lifting device housing are welded to both sides of the bottom of the lifting ring.

[0012] Using the above technical solution, the lifting device housing can be hoisted onto the gantry conveyor frame by using chains and lifting rings, thereby transporting cold-formed steel.

[0013] The present invention is further configured such that: both sides of the surface of the threaded cylinder are welded with limiting sliders that are slidably connected to the lifting device housing.

[0014] By adopting the above technical solution, the stability of the threaded cylinder sliding up and down is improved, and the sliding distance of the threaded cylinder is limited to prevent it from sliding out of the lifting device housing.

[0015] The present invention is further configured such that a mounting plate is bolted to the front of the lifting device housing.

[0016] The above technical solution facilitates the opening of the lifting device housing for maintenance and replacement of internal parts.

[0017] The present invention is further configured such that a limit plate is welded to the bottom of both clamp blocks.

[0018] The above technical solution is used in conjunction with a pressure plate to limit the bottom of cold-formed steel and improve the clamping stability of the cold-formed steel.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. By using two clamping blocks to hold the cold-formed steel section from left to right, the pressure plate can be moved downwards simultaneously to limit the top of the cold-formed steel section. This prevents the cold-formed steel section from moving up and down, improving the stability of the cold-formed steel section during hoisting and transportation.

[0021] 2. By creating different grooves on the surface of the clamp blocks according to the shape of the cold-formed steel, and by rotating and adjusting them, the two clamp blocks are rotated to fit the grooves of the cold-formed steel with that shape for clamping. This ensures that the left and right sides of the cold-formed steel are fully fitted together, guaranteeing the friction of the clamping surfaces. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0024] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the image.

[0025] Reference numerals in the attached drawings: 1. Lifting device housing; 2. Motor; 3. Bidirectional screw; 4. Threaded ring; 5. Clamp block; 6. First bevel gear; 7. Second bevel gear; 8. Threaded shaft; 9. Threaded cylinder; 10. Pressure plate; 11. Limiting plate; 12. Fixing cover; 13. Connecting rod; 14. Rotating block; 15. Spring; 16. Insert rod; 17. Insertion hole; 18. Ventilation mesh; 19. Chain; 20. Lifting ring; 21. Limiting slider; 22. Mounting plate. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1:

[0028] refer to Figure 1 , Figure 2A special lifting tool for cold-formed steel includes a lifting tool housing 1. A motor 2 is bolted to one side of the lifting tool housing 1. A bidirectional screw 3, rotatably connected to the lifting tool housing 1, is bolted to the output end of the motor 2. Both ends of the bidirectional screw 3 are threaded with threaded rings 4. Clamping blocks 5 are installed at the bottom of each threaded ring 4. A first bevel gear 6, fixedly fitted to the bidirectional screw 3, is positioned between the two threaded rings 4. A second bevel gear 7, rotatably connected to the lifting tool housing 1, meshes with the bottom of the first bevel gear 6. A threaded shaft 8 is bolted to the bottom of the second bevel gear 7. A threaded cylinder 9, slidably connected to the lifting tool housing 1, is threaded onto the surface of the threaded shaft 8. A pressure plate 10 is bolted to the bottom of the threaded cylinder 9. When the two clamping blocks 5 clamp the cold-formed steel from the left and right, the pressure plate 10 can be moved downwards simultaneously, limiting the top of the cold-formed steel. This prevents the cold-formed steel from moving up and down, improving the stability of the cold-formed steel during lifting and transportation.

[0029] refer to Figure 2 A ventilation mesh 18, which works in conjunction with the motor 2, is bolted to the side of the lifting device housing 1 closest to the motor 2. This provides ventilation and heat dissipation for the motor 2 while reducing dust from entering the interior.

[0030] refer to Figure 2 Both sides of the threaded cylinder 9 are welded with limiting sliders 21 that are slidably connected to the lifting device housing 1. This improves the stability of the threaded cylinder 9 as it slides up and down, and at the same time limits the sliding distance of the threaded cylinder 9 to prevent it from sliding out of the lifting device housing 1.

[0031] refer to Figure 1 , Figure 2 Both clamping blocks 5 have limit plates 11 welded to their bottoms. These are used in conjunction with the pressure plate 10 to limit the bottom of the cold-formed steel, thereby improving the clamping stability of the cold-formed steel.

[0032] Brief description of operation: By turning on the motor 2, the bidirectional screw 3 rotates, causing it to engage with the two threaded rings 4. This pulls the two bottom rings closer together, clamping the left and right sides of the cold-formed steel section. Then, as the bidirectional screw 3 rotates, it simultaneously drives the first bevel gear 6 and the second bevel gear 7 to mesh, which in turn drives the threaded shaft 8 to rotate and engage with the threaded cylinder 9. This causes the pressure plate 10 to move downwards, thus fixing the top of the cold-formed steel section at its upper and lower limits. Simultaneously, as the two clamping blocks 5 move away from each other, the pressure plate 10 moves upwards, releasing the cold-formed steel section.

[0033] Example 2:

[0034] refer to Figure 1 , Figure 2 , Figure 3A special lifting tool for cold-formed steel is disclosed. Two threaded rings 4 are each bolted to the bottom of a fixed cover 12 that is slidably connected to the lifting tool housing 1. Two clamping blocks 5 are each bolted to the top of a connecting rod 13. A rotating block 14, rotatably connected to the fixed cover 12, is welded to the end of the connecting rod 13 away from the clamping block 5. An insertion hole 17 is provided on the surface of the fixed cover 12. A spring 15 is bolted inside the rotating block 14. An insertion rod 16, slidably connected to the rotating block 14, is bolted to the end of the spring 15 near the insertion hole 17. By creating different grooves on the surface of the clamping blocks 5 according to the shape of the cold-formed steel and adjusting their rotation, the two clamping blocks 5 can be rotated to fit the grooves suitable for the shape of the cold-formed steel for clamping. This ensures full contact between the left and right sides of the cold-formed steel, guaranteeing friction on the clamping surfaces.

[0035] refer to Figure 1 , Figure 2 The top of the lifting device housing 1 is equipped with a lifting ring 20, and both sides of the bottom of the lifting ring 20 are welded with chains 19 that are fixedly connected to the lifting device housing 1. By using the chains 19 and the lifting ring 20, the lifting device housing 1 can be hoisted onto the gantry conveyor, thereby transporting cold-formed steel.

[0036] refer to Figure 1 A mounting plate 22 is bolted to the front of the lifting device housing 1. This facilitates opening the lifting device housing 1 to repair or replace internal parts.

[0037] Brief description of the usage process: By creating different grooves on the surface of the clamp block 5 according to the shape of the cold-formed steel, the surface of the clamp block 5 can fully fit the left and right sides of the cold-formed steel. Then, by rotating the clamp block 5, the rotating block 14 rotates inside the fixed cover 12, and the rotating block 14 pushes the insertion rod 16 into the insertion hole 17 through the elastic force of the spring 15. Since the position of the insertion hole 17 is consistent with the position of the different grooves on the surface of the clamp block 5, the insertion rod 16 can be precisely positioned after being inserted into the insertion hole 17 and the groove on the surface of the clamp block 5 is adjusted. Thus, the clamp block 5 can be adjusted to a suitable groove to clamp the cold-formed steel as needed. Finally, the two clamp blocks 5 are brought close together to clamp this type of cold-formed steel.

[0038] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A cold-formed steel special sling comprising a sling housing (1), characterized in that: A motor (2) is bolted to one side of the lifting device housing (1). The output end of the motor (2) is bolted to a bidirectional screw (3) that is rotatably connected to the lifting device housing (1). Both ends of the surface of the bidirectional screw (3) are threaded with threaded rings (4). The bottom of each of the two threaded rings (4) is equipped with a clamp block (5). A first bevel gear (6) is fixedly sleeved between the two threaded rings (4) and is fixedly sleeved with the bidirectional screw (3). The bottom of the first bevel gear (6) is meshed with a second bevel gear (7) that is rotatably connected to the lifting device housing (1). The bottom of the second bevel gear (7) is bolted to a threaded shaft (8). The surface of the threaded shaft (8) is threaded with a threaded cylinder (9) that is slidably connected to the lifting device housing (1). The bottom of the threaded cylinder (9) is bolted to a pressure plate (10).

2. The cold-formed steel special lifting device according to claim 1, characterized in that: The bottom of each of the two threaded rings (4) is bolted with a fixed cover (12) that is slidably connected to the lifting device housing (1). The top of each of the two clamp blocks (5) is bolted with a connecting rod (13). The end of the connecting rod (13) away from the clamp block (5) is welded with a rotating block (14) that is rotatably connected to the fixed cover (12). The surface of the fixed cover (12) is provided with an insertion hole (17). A spring (15) is bolted inside the rotating block (14). The end of the spring (15) near the insertion hole (17) is bolted with an insertion rod (16) that is slidably connected to the rotating block (14).

3. The cold-formed steel special lifting device according to claim 1, characterized in that: The hoist housing (1) is fitted with a ventilation mesh (18) that works in conjunction with the motor (2) on the side near the motor (2).

4. The cold-formed steel special lifting device according to claim 1, characterized in that: The top of the lifting device housing (1) is provided with a lifting ring (20), and both sides of the bottom of the lifting ring (20) are welded with chains (19) that are fixedly connected to the lifting device housing (1).

5. The cold-formed steel special lifting device according to claim 1, characterized in that: Both sides of the threaded cylinder (9) are welded with limiting sliders (21) that are slidably connected to the lifting device housing (1).

6. The cold-formed steel special lifting device according to claim 1, characterized in that: The front of the lifting device housing (1) is bolted with a mounting plate (22).

7. The cold-formed steel special lifting device according to claim 1, characterized in that: Limit plates (11) are welded to the bottom of both clamp blocks (5).

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