Modification of pneumatic wrench and insufficient torque

An improved structure of a pneumatic wrench, characterized in that the pneumatic wrench includes a groove and a slightly elastic sheath. The groove is located on the other side of the pneumatic wrench handle relative to the trigger, and there are several card holes in it. The sheath has a predetermined length and a U-shaped cross-section, and has an arc-shaped portion and a pair of extension portions symmetrically extending outward from both ends of the arc-shaped portion.

The inner edges of each extension are also equipped with several clamps corresponding to each card hole. The outer edge of the sheath is convex with several protruding posts, and the sheath is fixed on the handle by tightly fitting the respective card holes and card posts.

A pneumatic wrench comprising: a body, a working end extending outward by a predetermined length from the front end of the body, a grip extending downward by a predetermined length from the lower end of the body, and a trigger provided on the side facing forward; The feature is that the handle is provided with a groove on the rear side of the trigger, which has a predetermined depth and extends a predetermined length from top to bottom along the axis of the handle, and its cross-section is slightly U-shaped; Several card holes, each with a predetermined depth and spaced apart by a predetermined distance.

Integrally formed on the predetermined portion of the groove relative to the two sides of the grip; A protective sheath made of a slightly elastic material in a one-piece molding manner, with a length slightly equal to the length of the groove and a U-shaped cross section. It also has an arc-shaped portion and a pair of extension portions symmetrically extending from the two ends of the arc-shaped portion in a predetermined direction. Several card posts are respectively protruding on the inner side of each extension portion and corresponding to each card hole.

What are the common reasons for insufficient torque of pneumatic wrenches? Today, we will introduce some common situations.

1. The axial clearance between the cylinder and rotor is too large;

2. The gas supply pipeline is too long and the pipeline diameter is too thin;

3. The filter screen in the intake screw is blocked by oil stains;

4. There are too many areas of leakage.