Clamping mechanism of hub leak tester

Abstract

The invention discloses a clamping mechanism of a hub leak tester. The clamping mechanism comprises two clamping devices which are symmetrically and coaxially arranged, wherein each clamping device comprises a main shaft, and a pull rod and a chuck which sleeve both ends of the main shaft; the chuck is used for clamping a hub; the central axis of the pull rod is perpendicular to the central axis of the main shaft; the central axis of the chuck is parallel to the central axis of the main shaft; both ends of the pull rod are connected with two oil cylinders, the two oil cylinders and the main shaft are arranged on two sides of the pull rod separately, and a fixed plate is connected between the tail end parts of the two oil cylinders; and two ends of the fixed plate are connected with a fixed shaft of the hub leak tester, and the central axis of the fixed plate is parallel to the central axis of the main shaft. The clamping mechanism of the hub leak tester is safe in structure, reduces equipment failure rate, and ensures production safety.

Description

technical field [0001] The invention belongs to the technical field of workpiece airtightness testing, and in particular relates to a clamping mechanism of a hub leak testing machine. Background technique [0002] Leak tester, also known as leak tester and leak tester, is mainly used in automobiles, internal combustion engines, motorcycles, compressors and other industries. It is an important equipment to detect the leakage status of its parts and ensure product quality. The hub is the skeleton of the car wheel, which is formed by die-casting aluminum alloy and cannot leak air. In order to detect whether there is leakage in the manufacturing process of the wheel hub, and to ensure that the tire will not cause accidents due to the leakage of the wheel hub during use, it is necessary to perform a pressurized leak test on the product. In order to clearly find defects such as sand holes and cracks that may exist in the wheel hub, the wheel hub leak tester is used in the prior a...

AI Technical Summary

Problems solved by technology

[0004] The clamping mechanism of the hub leak tester of prior art, as figure 1 As shown, it includes two clamping devices arranged symmetrically and coaxially. The clamping device includes a main shaft 2, tie rods 3 respectively sleeved on both ends of the main shaft 2 and a chuck 1 for clamping the hub. The chuck 1 is arranged on the hub In the bracket, two oil cylinders 4 are connected to the two ends of the tie rod 3, and the two oil cylinders 4 and the main shaft 2 are arranged on the same side of the tie rod 3, and the other ends of the two oil cylinders 4 are respectively connected to the two ends of the hub bracket; the clamping mechanism When working, in the clamping device on one side, the oil cylinder drives the chuck to move, and the chuck in the clamping device on the other side makes relative motion to clamp the wheel hub. All the tension of the disc movement makes the tie rod 3 easy to break and slip, causing the tie rod to break suddenly during the leak test, and the chuck is loosened, causing the wheel hub to fly out and cause a safety accident

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