Abstract: A crane assembly has a bracket, a supporting plate, a crane device, a chain and a chain bag. The bracket has two side plates with wheels connected with each other. Each side plate has a first recess defined in the bottom of the side plate to make the side plate have an inverse U-shape. Two axles are mounted between the side plates and are respectively located at two sides of the first recesses in the side plates to combine the side plates together. The supporting plate is attached to the axles and is mounted between the side plates. The craning device is pivotally attached to the supporting plate and has a top portion received in the first recesses in the side plates. Accordingly, the location of the crane device is heightened, and the craning travel of the chain is prolonged.

Abstract: A crane assembly has a bracket, a supporting plate, a crane device, a chain and a chain bag. The bracket has two side plates with wheels connected with each other. Each side plate has a first recess defined in the bottom of the side plate to make the side plate have an inverse U-shape. Two axles are mounted between the side plates and are respectively located at two sides of the first recesses in the side plates to combine the side plates together. The supporting plate is attached to the axles and is mounted between the side plates. The craning device is pivotally attached to the supporting plate and has a top portion received in the first recesses in the side plates. Accordingly, the location of the crane device is heightened, and the craning travel of the chain is prolonged.

Abstract: A clutching device has a main shaft, a hub, a pushing disk and a transmitting gear. The hub is securely attached to the main shaft and has a shoulder formed on one end of the hub. The pushing disk is securely attached to the hub. The transmitting gear is rotatably mounted on the hub and is sandwiched between the shoulder of the hub and the pushing disk. The transmitting gear has a recess defined in each respective side of the transmitting gear, and two clutch pads are respectively received in the recesses in the transmitting gear and respectively abut the shoulder on the hub and the pushing disk. Accordingly, it is not necessary to replace the transmitting gear when only one of the clutching pads is worn away, such that the cost for maintaining the clutching device in a good operational condition is reduced.

Abstract: A clutching device has a main shaft, a hub, a pushing disk and a transmitting gear. The hub is securely attached to the main shaft and has a shoulder formed on one end of the hub. The pushing disk is securely attached to the hub. The transmitting gear is rotatably mounted on the hub and is sandwiched between the shoulder of the hub and the pushing disk. The transmitting gear has a recess defined in each respective side of the transmitting gear, and two clutch pads are respectively received in the recesses in the transmitting gear and respectively abut the shoulder on the hub and the pushing disk. Accordingly, it is not necessary to replace the transmitting gear when only one of the clutching pads is worn away, such that the cost for maintaining the clutching device in a good operational condition is reduced.