A self-locking sling

Abstract

The utility model discloses a self -locking lifting appliance, including boom, horizontal support seat and clamping arm, one end of boom is perpendicular and is through horizontal support seat, and extends to the below of horizontal support seat, and one end of boom is installed with support block, and both ends of support block all articulate with connecting rod, and the symmetry is arranged between connecting rod, and clamping arm sets up two groups, and is respectively symmetrically articulated in both ends of horizontal support seat, and one end of clamping arm is located above horizontal support seat, and the other end of clamping arm is located below horizontal support seat, and is articulated with connecting rod, and the other end of clamping arm is installed with the clamping block of adaptation with work piece. In the utility model, through boom, horizontal support seat, connecting rod, support block, clamping arm and clamping block cooperation, the clamping of work piece is facilitated, and realizes self -locking after work piece clamping, guarantees that the worker can install work piece safely and quickly.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and more specifically, to a self-locking lifting device. Background Technology

[0002] In the processing of mechanical products, some workpieces that are large or heavy are inevitable. For such workpieces, it is difficult to transfer them to tooling manually, which is neither safe nor efficient.

[0003] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a self-locking lifting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-locking lifting device includes a lifting rod, a horizontal support base, and clamping arms. One end of the lifting rod vertically penetrates the horizontal support base and extends to the bottom of the horizontal support base. A support block is installed at one end of the lifting rod. Both ends of the support block are hinged to connecting rods, which are symmetrically arranged. Two sets of clamping arms are provided, which are symmetrically hinged to both ends of the horizontal support base. One end of the clamping arm is located above the horizontal support base, and the other end of the clamping arm is located below the horizontal support base and is hinged to the connecting rod. A clamping block adapted to the workpiece is installed at the other end of the clamping arm.

[0007] Furthermore, the clamping arm includes a handle, a connecting part, and a clamping part arranged from top to bottom. The handle is located above the horizontal support, and the connecting part and the clamping part are located below the horizontal support. The two ends of the connecting part are respectively hinged to the horizontal support and the connecting rod, and the clamping part is located outside the handle.

[0008] Furthermore, the length of the handle portion is greater than the distance between it and the boom.

[0009] Furthermore, one end of the boom is threaded to the support block.

[0010] Furthermore, a limiting nut is provided below the support block, and one end of the lifting rod is threaded to the limiting nut, with the upper surface of the limiting nut abutting against the lower surface of the support block.

[0011] Furthermore, a lifting ring is installed at the other end of the boom.

[0012] Furthermore, the clamping block has a horizontal cylindrical structure, with one circular end face of the clamping block vertically connected to the end of the clamping arm, and the clamping block is adapted to the lifting hole of the workpiece.

[0013] The beneficial effects of this utility model are:

[0014] 1. In this utility model, the workpiece is conveniently clamped by the cooperation of the lifting rod, the horizontal support seat, the connecting rod, the support block, the clamping arm and the clamping block, and the workpiece is self-locking after clamping, which ensures that the worker can install the workpiece safely and quickly.

[0015] 2. In this utility model, the suspension rod and the support block are connected by a threaded connection. On the one hand, this facilitates the installation of the support block and the suspension rod together. On the other hand, by changing the position of the support block on the suspension rod, the upward stroke of the suspension rod can be adjusted, thereby adjusting the mutual closing range of the two sets of clamping parts. Simultaneously, a limiting nut is provided to limit the position of the support block.

[0016] 3. The lifting device of this utility model has few components, making it easy to disassemble, assemble, and maintain. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one structure of the self-locking lifting device in this embodiment;

[0018] Figure 2 This is a rear view schematic diagram of a self-locking lifting device in this embodiment;

[0019] Figure 3 This is a cross-sectional view of the workpiece in this embodiment.

[0020] Reference numerals: 1. Lifting rod; 2. Horizontal support seat; 3. Clamping arm; 301. Handle; 302. Connecting part; 303. Clamping part; 4. Support block; 5. Connecting rod; 6. Clamping block; 7. Limiting nut; 8. Lifting ring; 9. Workpiece; 901. Lifting hole; 10. Hex socket screw; 11. Hex nut. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: A self-locking lifting device, such as Figures 1-3As shown, the assembly includes a lifting rod 1, a horizontal support seat 2, and clamping arms 3. The lifting rod 1 is a round rod structure located above the horizontal support seat 2. One end of the lifting rod 1 vertically penetrates the center of the horizontal support seat 2 and extends to the bottom of the horizontal support seat 2. A support block 4 is installed at one end of the lifting rod 1. Both ends of the support block 4 are hinged to connecting rods 5. There are two sets of connecting rods 5, which are symmetrically arranged. There are two sets of clamping arms 3, which are symmetrically hinged to both ends of the horizontal support seat 2. One end of the clamping arm 3 is located above the horizontal support seat 2, and the other end of the clamping arm 3 is located below the horizontal support seat 2 and is hinged to the connecting rod 5. The other end of the clamping arm 3 is equipped with a clamping block 6 that matches the lifting hole 901 of the workpiece 9.

[0023] When using, such as Figure 1 As shown, tighten one end of the two sets of clamping arms 3, causing the two sets of clamping arms 3 to rotate inward around the hinge point between the clamping arms 3 and the horizontal support seat 2. One end of the two sets of clamping arms 3 approaches each other, while the other end of the two sets of clamping arms 3 opens up towards each other. Since the clamping blocks 6 are fixedly installed on the other end of the clamping arms 3, the distance between the two sets of clamping blocks 6 increases, making it easier to clamp the workpiece 9. When the two sets of clamping blocks 6 correspond to the lifting hole 901 of the workpiece 9, slowly loosen one end of the two sets of clamping arms 3, causing the other ends of the two sets of clamping arms 3 to approach each other, so that the clamping blocks 6 move into the lifting hole 901 of the workpiece 9. Then, pull the workpiece upward using a lifting device or a robotic arm. One end of rod 1 moves the lifting rod 1 upward, causing the support block 4 to move upward. This, in turn, is pulled by two sets of connecting rods 5, causing the other ends of the two sets of clamping arms 3 to move closer together, further reducing the distance between the other ends of the clamping arms 3. This confines the two sets of clamping blocks 6 within the two lifting holes 901 of the workpiece 9, achieving self-locking. Then, the workpiece 9 is lifted by the lifting device and transferred to the tooling. When the workpiece 9 is placed on the tooling, one end of the two sets of clamping arms 3 is tightened, causing the other ends of the two sets of clamping arms 3 to open up, thus disengaging the clamping blocks 6 from the lifting holes 901 of the workpiece 9, separating the lifting device from the workpiece 9. Simultaneously, during the transfer of the workpiece 9, it is lifted and lowered vertically, without any possibility of flipping or turning, thus not affecting subsequent drilling operations.

[0024] Furthermore, the clamping arm 3 includes a handle portion 301, a connecting portion 302, and a clamping portion 303 arranged from top to bottom. The handle portion 301 is located above the horizontal support seat 2 and on one side of the lifting rod 1. The connecting portion 302 and the clamping portion 303 are located below the horizontal support seat 2. The two ends of the connecting portion 302 are connected to the handle portion 301 and the clamping portion 303, respectively. One end of the connecting portion 302 is hinged to the horizontal support seat 2, and the other end of the connecting portion 302 is hinged to the connecting rod 5. The clamping portion 303 is located outside the handle portion 301.

[0025] In use, tighten the two sets of handles 301 (i.e., apply a force to the handles 301 in the direction of the rod 1), so that the handles 301 rotate inward about the hinge of the connecting part 302 and the horizontal support seat 2. The two sets of handles 301 move closer to each other, and the two sets of clamping parts 303 open up to each other, so that the distance between the two sets of clamping blocks 6 increases to fit the workpiece 9 and facilitate the clamping of the workpiece 9.

[0026] Preferably, the hinges between the connecting part 302 and the horizontal support seat 2, the hinges between the connecting part 302 and the connecting rod 5, and the hinges between the support block 4 and the connecting rod 5 are all achieved by the cooperation of the internal hexagon screw 10 and the hexagonal nut 11. That is, the internal hexagon screw 10 passes through the connecting part 302 and the horizontal support seat 2 and is threaded onto the hexagonal nut 11 to achieve the hinge between the connecting part 302 and the horizontal support seat 2; the internal hexagon screw 10 passes through the connecting part 302 and the connecting rod 5 and is threaded onto the hexagonal nut 11 to achieve the hinge between the connecting part 302 and the connecting rod 5; and the internal hexagon screw 10 passes through the support block 4 and the connecting rod 5 and is threaded onto the hexagonal nut 11 to achieve the hinge between the support block 4 and the connecting rod 5.

[0027] Preferably, the length of the handle 301 is greater than the distance between it and the lifting rod 1; the above arrangement is adopted to facilitate the control of the opening range of the clamping part 303, so as to avoid the clamping block 6 from being inconvenient to correspond with the mounting hole 901 of the workpiece 9 due to the clamping part 303 opening too wide.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, the clamping block 6 has a horizontal cylindrical structure, and one of its circular end faces is vertically connected to the clamping part 303 of the clamping arm 3. The clamping block 6 is adapted to the lifting hole 901 of the workpiece 9. Figure 3 As shown, both ends of the workpiece 9 are provided with lifting holes 901 that are adapted to the clamping block 6. For example, the diameter of the lifting hole 901 is 90mm and the diameter of the clamping block 6 is 80mm. By setting the clamping block 6 into a horizontal cylindrical structure, it is convenient to move the clamping block 6 into the lifting hole 901 of the workpiece 9 without adjusting the installation direction of the clamping block 6.

[0029] Preferably, the clamping block 6 is made of nylon material with certain wear resistance and hardness in order to improve the service life of the clamping block 6 and avoid damage to the workpiece 9.

[0030] Preferably, the clamping block 6 and the clamping part 303 of the clamping arm 3 are connected in a detachable manner, such as by bolt thread connection, so as to replace the corresponding clamping block 6 according to the size of the mounting hole 901 of different workpieces 9.

[0031] Furthermore, the outer surface of one end of the hanger rod 1 is provided with external threads, and the inner wall of the support block 4 for mounting the hanger rod 1 is provided with internal threads. One end of the hanger rod 1 is threadedly connected to the support block 4. The hanger rod 1 and the support block 4 are connected by threads. On the one hand, this facilitates the installation of the support block 4 and the hanger rod 1 together. On the other hand, by changing the position of the support block 4 on the hanger rod 1, the distance between the support block 4 and the horizontal support seat 2 can be adjusted, thereby adjusting the upward stroke of the hanger rod 1 and thus adjusting the mutual closing range of the two sets of clamping parts 303.

[0032] Furthermore, such as Figure 1 and Figure 2 As shown, a limiting nut 7 is provided below the support block 4, and one end of the hanger 1 is threaded to the limiting nut 7. The upper surface of the limiting nut 7 abuts against the lower surface of the support block 4. The limiting nut 7 is used to limit the position of the support block 4.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, a lifting ring 8 is installed at the other end of the boom 1. The lifting ring 8 is provided to facilitate the lifting of the lifting device or the lifting clamp of the robotic arm.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A self-locking lifting device, comprising a lifting rod (1), a horizontal support seat (2), and a clamping arm (3), characterized in that, One end of the lifting rod (1) passes vertically through the horizontal support seat (2) and extends to the bottom of the horizontal support seat (2). A support block (4) is installed at one end of the lifting rod (1). Both ends of the support block (4) are hinged to connecting rods (5). The connecting rods (5) are symmetrically arranged. Two sets of clamping arms (3) are provided, which are symmetrically hinged to the two ends of the horizontal support seat (2). One end of the clamping arm (3) is located above the horizontal support seat (2), and the other end of the clamping arm (3) is located below the horizontal support seat (2) and is hinged to the connecting rod (5). The other end of the clamping arm (3) is equipped with a clamping block (6) that is compatible with the workpiece (9).

2. The self-locking lifting device according to claim 1, characterized in that, The clamping arm (3) includes a handle (301), a connecting part (302), and a clamping part (303) arranged from top to bottom. The handle (301) is located above the horizontal support (2), and the connecting part (302) and the clamping part (303) are located below the horizontal support (2). The two ends of the connecting part (302) are respectively hinged to the horizontal support (2) and the connecting rod (5), and the clamping part (303) is located outside the handle (301).

3. A self-locking lifting device according to claim 2, characterized in that, The length of the handle (301) is greater than the distance between it and the rod (1).

4. A self-locking lifting device according to claim 1, characterized in that, One end of the boom (1) is threaded to the support block (4).

5. A self-locking lifting device according to claim 4, characterized in that, A limiting nut (7) is provided below the support block (4), and one end of the lifting rod (1) is threaded to the limiting nut (7). The upper surface of the limiting nut (7) abuts against the lower surface of the support block (4).

6. A self-locking lifting device according to claim 1, characterized in that, A lifting ring (8) is installed at the other end of the boom (1).

7. A self-locking lifting device according to claim 1, characterized in that, The clamping block (6) has a horizontal cylindrical structure. One of the circular end faces of the clamping block (6) is vertically connected to the end of the clamping arm (3). The clamping block (6) is adapted to the lifting hole (901) of the workpiece (9).

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