Clamping mechanism with self-locking structure

Abstract

The utility model discloses a clamping mechanism with a self-locking structure. The clamping mechanism aims to solve the problems that in the prior art, a clamping mechanism is complex in structure, lack of a self-locking function, tedious in operation and insufficient in reliability. The clamping mechanism comprises a support, a self-locking screw type driving rod and a pair of clamping jaws. A through hole is formed in the middle of the support and internally provided with a hollow countersunk sleeve, and the driving rod penetrates into the sleeve in a threaded fit mode and can move up and down. The lower portion of the driving rod is connected with a driving block, the two sides of the driving block are connected with clamping jaws through connecting rods, and the upper ends of the clamping jaws are clamped in sliding grooves of the support and can move left and right along the sliding grooves. Clamping and loosening of the clamping jaws are achieved by rotating the driving rod, and meanwhile the stability of the clamping state is guaranteed through the self-locking characteristic of the driving rod. In addition, the countersunk sleeve is detachably connected with the bracket, so that quick replacement is facilitated; and the lower part of the clamping jaw is provided with a zigzag structure, so that the clamping force is enhanced. The clamping device is simple in structure and convenient to operate, has a self-locking function, improves the clamping reliability and stability, and is suitable for various machining and transportation scenes.

Description

Technical Field

[0001] This utility model relates to the field of clamps, and in particular to a clamping mechanism with a self-locking structure. Background Technology

[0002] In modern industrial production and logistics, the secure securing of various precision components and products is a crucial step in ensuring processing accuracy and transportation safety. Especially in fields such as machining, automobile manufacturing, and aerospace, products often rely on specialized fixtures during processing, assembly, and transportation to achieve stable clamping and positioning, preventing misalignment, slippage, or even falling during operation, thereby ensuring production efficiency and product quality.

[0003] Currently, there are many types of clamping mechanisms on the market, which can be broadly classified into mechanical, hydraulic, and pneumatic types according to their working principles. Among them, mechanical clamping mechanisms are widely used due to their simple structure and convenient operation. These mechanisms typically clamp workpieces using mechanical components such as bolts, levers, and cams, either manually or by power. However, with the popularization of automated production lines and the increasing demands for production efficiency, traditional mechanical clamping mechanisms have gradually revealed some shortcomings. Some existing clamping mechanisms have complex designs, containing multiple linked components, which not only increases manufacturing costs but also makes daily maintenance and troubleshooting inconvenient. Many clamping mechanisms require additional locking devices or manual operation to maintain the clamping state after clamping, lacking an effective self-locking mechanism. This design is prone to loosening under vibration or external forces, reducing the reliability and stability of clamping. At the same time, during long-term use, due to wear, loosening, and other factors, the clamping force of some clamping mechanisms will gradually weaken or even fail, making it difficult to meet the needs of high-precision machining and long-distance transportation.

[0004] In summary, developing a clamping mechanism with a self-locking structure that can automatically lock after clamping effectively prevents loosening caused by external force or vibration, improves the reliability and stability of clamping, and thus solves the shortcomings of the existing technology, meets the urgent need for efficient and safe clamping mechanisms in industrial production and logistics transportation, and is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides a clamping mechanism with a self-locking structure, which improves the reliability and stability of the existing machine clamping mechanism. The device includes a bracket, a drive rod, and a pair of jaws. The bracket is cuboid with a through hole in the middle. A hollow countersunk sleeve is disposed in the through hole. The drive rod passes through the countersunk sleeve. A drive block is disposed at the lower part of the drive rod. The jaws are disposed at the lower ends of both sides of the bracket. Connecting rods are disposed on both sides of the drive block. The other end of the connecting rod is connected to the jaw. The up-and-down movement of the drive rod drives the connecting rods of the drive block to drive the jaws to move left and right.

[0006] Furthermore, all countersunk sleeves have threads inside the through holes, and the drive rod is a self-locking screw rod that can rotate and move up and down in the countersunk sleeve.

[0007] Furthermore, the lower part of the bracket has two sliding grooves, the upper end of the gripper is "T" shaped, the upper end of the gripper is engaged inside the sliding groove, and moves left and right along the sliding groove.

[0008] Preferably, the countersunk sleeve and the bracket are connected by studs, which can be quickly replaced according to the usage scenario.

[0009] Preferably, the lower part of the gripper has a serrated structure to increase the gripping area.

[0010] The advantages and beneficial effects of this utility model are as follows: This utility model achieves the functional requirements of a clamping mechanism through a basic structure of a bracket, a drive rod, and a pair of grippers. Compared to traditional complex multi-component linkage designs, this utility model greatly simplifies the structure, reduces manufacturing costs, and facilitates daily maintenance and troubleshooting. The drive rod is designed as a self-locking screw, which engages with the threaded part inside the countersunk sleeve, enabling automatic locking of the position while the drive rod moves up and down. This self-locking mechanism effectively prevents loosening caused by external forces or vibrations, significantly improving the reliability and stability of clamping, without the need for additional locking devices or manual operation. The countersunk sleeve and the bracket are connected by studs, allowing the entire mechanism to be quickly replaced and adjusted according to different usage scenarios, enhancing the flexibility and applicability of the mechanism. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a cross-sectional view of the present invention.

[0013] Figure 2 This is a side view of the present invention.

[0014] Among them, 1-bracket, 11-through hole, 2-drive rod, 3-clamp, 4-countersunk sleeve, 5-drive block, 51-connecting rod. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0016] like Figure 1 , Figure 2 As shown, the mechanical gripper mainly includes a support 1, a drive rod 2, and a pair of grippers 3.

[0017] The bracket 1 has a rectangular parallelepiped structure with a through hole 11 in the middle. A hollow countersunk sleeve 4 is installed inside the through hole 11. The outer wall of the countersunk sleeve 4 is threaded for mating with the drive rod 2. The countersunk sleeve 4 is detachably connected to the bracket 1 by a stud, which facilitates quick replacement according to usage requirements.

[0018] In this embodiment, the drive rod 2 is a self-locking screw, with a threaded section on its upper part that matches the internal thread of the countersunk sleeve 4, allowing the drive rod 2 to rotate and move up and down within the countersunk sleeve 4. A drive block 5 is fixedly connected to the lower part of the drive rod 2, and the drive block 5 is located below the bracket 1.

[0019] Connecting rods 51 are provided on both sides of the drive block 5, and the other end of the connecting rods 51 is connected to the gripper 3 via a pin or hinge. Two sliding grooves are provided at the lower part of the bracket 1, and the direction of the sliding grooves is consistent with the moving direction of the gripper 3. The upper end of the gripper 3 is designed in a "T" shape and is locked inside the sliding groove, allowing it to move left and right along the sliding groove.

[0020] The lower part of the gripper 3 is provided with a clamping part, the surface of which is designed with a serrated structure to increase the force-bearing area during clamping and improve the clamping effect. The "T"-shaped upper end of the gripper 3 and the sliding groove are designed to match, ensuring the stability and accuracy of the gripper 3 during movement.

[0021] Specific usage steps:

[0022] In this embodiment, when it is necessary to clamp the workpiece, the drive rod 2 is rotated. Due to the threaded engagement between the drive rod 2 and the countersunk sleeve 4, the drive rod 2 will move upward or downward along the countersunk sleeve 4. This movement is transmitted to the gripper 3 through the drive block 5 and the connecting rod 51, and the gripper 3 moves left and right in opposite directions within the slide groove of the bracket 1.

[0023] Because the drive rod 2 is designed as a self-locking screw, it can automatically lock into the countersunk sleeve 4 after being rotated to the desired position, without the need for additional locking operations. At this time, the gripper 3 firmly holds the workpiece, effectively preventing loosening caused by external force or vibration, and ensuring the reliability and stability of clamping.

[0024] The clamping mechanism with a self-locking structure provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principle of this invention, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A clamping mechanism with a self-locking structure, comprising a bracket (1), a drive rod (2), and a pair of grippers (3), characterized in that, The bracket (1) is rectangular. A through hole (11) is provided in the middle of the bracket (1). A hollow countersunk sleeve (4) is provided in the through hole. The drive rod (2) passes through the countersunk sleeve (4). A drive block (5) is provided at the lower part of the drive rod (2). The grippers (3) are provided at the lower ends of both sides of the bracket (1). Connecting rods (51) are provided on both sides of the drive block (5). The other end of the connecting rod (51) is connected to the gripper (3). The drive rod (2) moves up and down, which drives the connecting rod (51) of the drive block (5) to drive the gripper (3) to move left and right.

2. The clamping mechanism with a self-locking structure according to claim 1, characterized in that, All countersunk sleeves (4) have threads in their through holes. The drive rod (2) is a self-locking screw. The drive rod (2) can rotate and move up and down in the countersunk sleeve (4).

3. A clamping mechanism with a self-locking structure according to any one of claims 1 or 2, characterized in that, The bracket (1) has two sliding grooves at its lower part. The upper end of the gripper (3) is "T" shaped and is locked inside the sliding groove, moving left and right along the sliding groove.

4. A clamping mechanism with a self-locking structure according to any one of claims 1 or 2, characterized in that, The countersunk sleeve (4) and the bracket (1) are connected by studs.

5. A clamping mechanism with a self-locking structure according to any one of claims 1 or 2, characterized in that, The gripper (3) has a serrated structure at its lower part.

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