活动扳手在使用前先看看它的结构。一个部分是活动的部分，可以调节开口宽窄的。另一个是固定的部分，是和手柄连成一体的。还要看工作的受力点。在拧紧罗丝的时候，顺时针用力，那扳手的固定部分放在右边。把力都吃在固定的部分。在拧松罗丝的时候就要反过来。
气动棘轮扳手的正反转开关一般在头部，是两种常规的正反转开关，一种可直接旋转开关控制正反转，另一种是借助六角扳手拧松再转动。
棘轮扳手是一种手动螺丝松紧工具，单头、双头多规格活动柄棘轮梅花扳手。是由不同规格尺寸的主梅花套和从梅花套通过铰接键的阴键和阳键咬合的方式连接的。
由于一个梅花套具有两个规格的梅花形通孔，使它可以用于两种规格螺丝的松紧，从而扩大了使用范围，节省了原材料和工时费用。
活动扳柄可以方便地调整扳手使用角度。这种扳手用于螺丝的松紧操作，具有适用性强，使用方便和造价低的特点。
Check the structure of the adjustable wrench before using it. One part is a movable part, which can adjust the width of the opening. The other is a fixed part, which is connected with the handle. It also depends on the stress point of the work. When tightening the rose, apply clockwise force, and put the fixed part of the wrench on the right. Eat all your strength in a fixed part. When you loosen rose, turn it around.
The forward and reverse switch of pneumatic ratchet wrench is generally at the head. It is two conventional forward and reverse switches. One can directly rotate the switch to control the forward and reverse, and the other can loosen and rotate with the help of hexagonal wrench.
Ratchet wrench is a manual screw tightening tool, which is a single head, double head and multi specification ratchet box wrench with movable handle. The utility model is connected by the main plum blossom sleeve and the slave plum blossom sleeve with different specifications and sizes through the engagement of the female key and the male key of the articulated key.
Because a plum blossom sleeve has plum blossom shaped through holes of two specifications, it can be used for the tightness of screws of two specifications, so as to expand the scope of use and save raw materials and labor costs.
The use angle of the wrench can be easily adjusted by the movable wrench handle. The wrench is used for the tightening operation of screws and has the characteristics of strong applicability, convenient use and low cost.
