Lifting appliance for non-magnetic metal medium plate

Abstract

The utility model discloses a lifting appliance for a nonmagnetic metal medium plate, which comprises clamping parts, a connecting part and a pre-clamping part, the clamping parts are arranged on both sides of the connecting part, and the pre-clamping part is arranged in the middle of the connecting part; the clamping part comprises a first clamping arm and a second clamping arm, the bottom of the first clamping arm is connected with the second clamping arm, a hook claw is arranged at the bottom of the second clamping arm, when the clamping device is used, the hook claw is used for clamping and fixing a thick plate, the stability is high, and the clamping device is convenient to hoist and use.

Description

Technical Field

[0001] This utility model belongs to the field of lifting equipment technology, specifically relating to a lifting tool for non-magnetic metal medium-thick plates. Background Technology

[0002] The lifting of medium and heavy metal plates mainly employs methods such as magnetic lifting devices, suction cup lifting devices, plate clamp lifting devices, and gravity clamping devices for loading and unloading materials during the process. However, it has been found that magnetic lifting devices cannot hold non-magnetic steel plates, such as those made of stainless steel, copper, or aluminum. Suction cup lifting devices cannot hold steel plates with rough surfaces. Plate clamp lifting devices require the plate to be raised first to create space for the clamps to hold the plate. Similarly, gravity clamping devices also require the plate to be raised first to create space for the clamps to hold the plate, and in the initial lifting stage, relying solely on the weight of the lifting device results in insufficient clamping force, causing the workpiece to fail to be held and potentially leading to safety accidents. Utility Model Content

[0003] The purpose of this invention is to provide a lifting device for non-magnetic metal medium-thick plates to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A lifting device for non-magnetic medium-thick metal plates includes a clamping part, a connecting part, and a pre-clamping part. The connecting part has clamping parts on both sides and a pre-clamping part in the middle. The clamping part includes a first clamping arm and a second clamping arm. The bottom of the first clamping arm is connected to the second clamping arm, and the bottom of the second clamping arm is provided with a hook.

[0006] By adopting the above technical solution: during installation, the clamping arms on both sides are placed on both sides of the thick plate, and the hooks are placed below the thick plate. Then, driven by the pre-clamping part, the clamping parts on both sides drive the hooks to fix the thick plate, and then the lifting is carried out. The thick plate is moved by the first clamping arm and the second clamping arm. Through the three-level modular design of the clamping part, the connecting part and the pre-clamping part, the clamping and fixing of non-magnetic plates is realized. The pre-clamping part, together with the second clamping arm with hooks, forms an initial clamping force in advance, which solves the problem of anti-slipping when non-magnetic materials cannot be magnetically lifted.

[0007] Preferably, there are two first clamping arms and two second clamping arms, with the tops of the two first clamping arms hinged together and the two second clamping arms cross-connected.

[0008] By adopting the above technical solution: using a double clamping arm cross-hinged structure, the overall structural symmetry is improved, while the X-shaped linkage mechanism formed by the cross arms achieves self-balancing clamping, making the clamping force evenly distributed and adaptable to different thickness plates.

[0009] Preferably, the connecting part includes a first connecting shaft, a second connecting shaft, and a third connecting shaft. The two ends of the first connecting shaft are hinged to the connection points of the two first clamping arms. The second connecting shaft is hinged to the connection points of the first clamping arms and the second clamping arms. The third connecting shaft is hinged to the connection points of each of the second clamping arms of the chain. The pre-clamping part is located between the two second connecting shafts.

[0010] By adopting the above technical solution, the three-axis articulated system constructs a stable triangular force transmission framework: the first axis controls the clamping opening and closing angle, the second axis links the main clamping arm, and the third axis enhances the stability of the cross arm, so that the pre-clamping part is in the optimal force application position, forming an efficient force transmission path.

[0011] Preferably, the pre-clamping part includes a rocker wheel, a trapezoidal screw, a rotating shaft, a driven rod, and a connecting bracket. One end of the rocker wheel is fixedly connected to the trapezoidal screw, and the end of the trapezoidal screw away from the rocker wheel is connected to the driven rod through the rotating shaft. Both the driven rod and the trapezoidal screw are connected to the two second connecting shafts respectively through the connecting bracket.

[0012] By adopting the above technical solution: the rocker wheel drives the trapezoidal screw to move, and the trapezoidal screw drives the driven rod and the second connecting shaft on the other side to move through the rotating shaft to achieve adjustment. The trapezoidal thread has a self-locking characteristic to prevent loosening. The rocker wheel enables one-handed fine adjustment of the preload, which greatly improves the convenience of operation while ensuring safety.

[0013] Preferably, a set of symmetrically arranged lifting ring blocks are provided above the first connecting shaft.

[0014] By adopting the above technical solution, the symmetrical lifting ring block design forms a dual-lifting-point balance system, which makes the load evenly distributed on the two first connecting shafts during lifting, effectively preventing the risk of deflection caused by single-point force, and at the same time facilitating quick docking with the crane hook.

[0015] Preferably, the contact surface of the hook has a serrated anti-slip texture and an entry angle of 15-30 degrees.

[0016] By adopting the above technical solution: the synergistic design of serrated texture and specific cutting angle: the 15-30° acute angle ensures cutting resistance while avoiding stress concentration, and the ratchet effect of the serrated texture forms a multi-level anti-slip structure, resulting in high clamping stability.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] This device uses a pre-clamping part to drive a second clamping arm with hooks to form the main clamping force. Through mechanical interlocking and frictional resistance, it solves the risk of slippage when lifting non-magnetic plates without magnetic attraction. In addition, the parallelogram-shaped connecting part evenly distributes the lifting load to the clamping arm and the connecting part, avoiding local stress concentration. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 for Figure 1 Enlarged view of part A in the image.

[0021] In the figure: 1. Clamping part; 11. First clamping arm; 12. Second clamping arm; 13. Hook; 2. Connecting part; 21. First connecting shaft; 22. Second connecting shaft; 23. Third connecting shaft; 3. Pre-clamping part; 31. Rocker wheel; 32. Trapezoidal screw; 33. Rotating shaft; 34. Driven rod; 35. Connecting bracket; 4. Lifting ring block. Detailed Implementation

[0022] The following will refer to the appendix in the embodiments of this utility model. Figures 1-2 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The specific embodiments described herein are merely used to explain this utility model and are not intended to limit this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Example:

[0024] like Figure 1 As shown, this utility model provides a lifting device for non-magnetic metal medium-thick plates, including a clamping part 1, a connecting part 2, and a pre-clamping part 3. The connecting part 2 is provided with clamping parts 1 on both sides and a pre-clamping part 3 is provided in the middle of the connecting part 2. The clamping part includes a first clamping arm 11 and a second clamping arm 12. The bottom of the first clamping arm 11 is connected to the second clamping arm 12, and the bottom of the second clamping arm 12 is provided with a hook 13.

[0025] During installation, the clamping arms on both sides are placed on both sides of the thick plate, and the hooks 13 are placed below the thick plate. Then, driven by the pre-clamping part 3, the clamping parts 1 on both sides drive the hooks 13 to fix the thick plate. Then, the thick plate is lifted. The thick plate is moved by the first clamping arm 11 and the second clamping arm 12. Through the three-level modular design of the clamping part 1, the connecting part 2 and the pre-clamping part 3, the clamping and fixing of non-magnetic plates is realized. The pre-clamping part 3, together with the second clamping arm 12 with hooks 13, forms an initial clamping force in advance, which solves the problem of anti-slipping when non-magnetic materials cannot be magnetically lifted.

[0026] There are two first clamping arms 11 and two second clamping arms 12, with the tops of the two first clamping arms 11 hinged together and the two second clamping arms 12 cross-connected. The contact surface of the claw 13 has a serrated anti-slip texture and the cutting angle is 15-30 degrees. The double clamping arm cross-hinged structure improves the overall structural symmetry and achieves self-balancing clamping through the X-shaped linkage mechanism formed by the cross arms, making the clamping force evenly distributed and adaptable to different thickness plates. The synergistic design of the serrated texture and the specific cutting angle: the 15-30° acute angle ensures the cutting resistance while avoiding stress concentration. Combined with the ratchet effect of the serrated texture, a multi-level anti-slip structure is formed, resulting in high clamping stability.

[0027] The connecting part 2 includes a first connecting shaft 21, a second connecting shaft 22, and a third connecting shaft 23. The two ends of the first connecting shaft 21 are hinged to the connection points of the two first clamping arms 11. The second connecting shaft 22 is hinged to the connection points of the first clamping arms 11 and the second clamping arms 12. The third connecting shaft 23 is hinged to the connection points of each of the second clamping arms 12. The pre-clamping part 3 is located between the two second connecting shafts 22. The three-axis hinge system constructs a stable triangular force transmission framework: the first axis controls the clamping opening and closing angle, the second axis links the main clamping arm, and the third axis strengthens the stability of the cross arm, so that the pre-clamping part 3 is in the optimal force application position, forming an efficient force transmission path. A set of symmetrically arranged lifting ring blocks is set above the first connecting shaft 21. The symmetrical lifting ring block design forms a double lifting point balance system, so that the load is evenly distributed on the two first connecting shafts 21 during lifting, effectively preventing the risk of deflection caused by single-point force, and at the same time facilitating quick docking with the crane hook.

[0028] like Figures 1-2As shown, the pre-clamping part 3 includes a rocker wheel 31, a trapezoidal screw 32, a rotating shaft 33, a driven rod 34, and a connecting bracket 35. One end of the rocker wheel 31 is fixedly connected to the trapezoidal screw 32. The end of the trapezoidal screw 32 away from the rocker wheel 31 is connected to the driven rod 34 through the rotating shaft 33. Both the driven rod 34 and the trapezoidal screw 32 are connected to two second connecting shafts 22 respectively through the connecting bracket 35. The rocker wheel 31 drives the trapezoidal screw 32 to move. The trapezoidal screw 32 drives the driven rod 34 and the second connecting shaft 22 on the other side to move through the rotating shaft 33, thereby achieving adjustment. The trapezoidal thread has a self-locking characteristic to prevent loosening. The pre-tightening force can be finely adjusted by one hand through the rocker wheel 31, which greatly improves the convenience of operation while ensuring safety.

[0029] In summary, this lifting device features high clamping stability and good anti-slip performance.

[0030] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting device for non-magnetic metal medium-thick plates, characterized in that: It includes a clamping part (1), a connecting part (2) and a pre-clamping part (3). The connecting part (2) is provided with clamping parts (1) on both sides and a pre-clamping part (3) is provided in the middle of the connecting part (2). The clamping part includes a first clamping arm (11) and a second clamping arm (12). The bottom of the first clamping arm (11) is connected to the second clamping arm (12), and the bottom of the second clamping arm (12) is provided with a claw (13).

2. A lifting device for non-magnetic medium-thick metal plates according to claim 1, characterized in that: There are two first clamping arms (11) and two second clamping arms (12), and the tops of the two first clamping arms (11) are hinged together, and the two second clamping arms (12) are cross-connected.

3. A lifting device for non-magnetic medium-thick metal plates according to claim 2, characterized in that: The connecting part (2) includes a first connecting shaft (21), a second connecting shaft (22) and a third connecting shaft (23). The two ends of the first connecting shaft (21) are hinged to the connection points of the two first clamping arms (11). The second connecting shaft (22) is hinged to the connection points of the first clamping arms (11) and the second clamping arms (12). The third connecting shaft (23) is hinged to the connection points of each of the second clamping arms (12) of the chain. The pre-clamping part (3) is located between the two second connecting shafts (22).

4. A lifting device for non-magnetic medium-thick metal plates according to claim 3, characterized in that: The pre-clamping part (3) includes a rocker wheel (31), a trapezoidal screw (32), a rotating shaft (33), a driven rod (34), and a connecting bracket (35). One end of the rocker wheel (31) is fixedly connected to the trapezoidal screw (32). The end of the trapezoidal screw (32) away from the rocker wheel (31) is connected to the driven rod (34) through the rotating shaft (33). The driven rod (34) and the trapezoidal screw (32) are both connected to the two second connecting shafts (22) respectively through the connecting bracket (35).

5. A lifting device for non-magnetic metal medium-thick plates according to claim 3, characterized in that: A set of symmetrically arranged lifting ring blocks are provided above the first connecting shaft (21).

6. A lifting device for non-magnetic medium-thick metal plates according to claim 1, characterized in that: The contact surface of the hook (13) has a serrated anti-slip pattern and an entry angle of 15-30 degrees.

Images