3results about How to "Prevent accidental fall" patented technology

This utility model discloses a well cleaning operation device, characterized by comprising a support frame and a reel mounted on the support frame. The outer circumference of the reel is connected to one end of a hook structure. An anti-reverse structure, maintaining contact with the reel, is also installed on the support frame. The anti-reverse structure includes an adjusting component mounted on the support frame and a limiting component mounted on the reel. This utility model has a simple structure. By rotating the reel, the hook structure can be easily raised and lowered, thus completing the lowering and raising of the bucket. Compared with traditional methods, the operation process is simpler, the workload is significantly reduced, and the efficiency of the cleaning operation is improved. Furthermore, the anti-reverse structure design ensures that even if the operator releases the crank handle and the bucket attempts to rotate the reel in the opposite direction due to gravity, the cooperation structure of the limiting component and the adjusting component restricts the limiting component to only one rotation, effectively preventing the bucket from accidentally falling and greatly improving operational safety.

The utility model provides a kind of material handling cart, including main profile frame, mobile wheel device, handle and lifting device.Lifting device includes lifting bottom frame, lifting top frame, two scissor mechanisms symmetrically arranged between the two, nitrogen spring, coaxial rod and control handle.Cylinder of nitrogen spring is hinged to lifting bottom frame, piston rod is fixed on the coaxial rod of connecting scissor mechanism middle part;Control handle is connected with the mechanical release valve of nitrogen spring by push-pull flexible shaft, realizes remote control lifting and locking.The utility model is combined by nitrogen spring and scissor mechanism, realizes remote control using control handle, so that lifting operation is very labor-saving, single hand can easily complete, greatly reduces labor intensity, improves material handling efficiency.

The application discloses a magnetorheological and latch integrated locking device, which comprises at least one clamping arm installed on a pipe pulling machine and used for locking a joint pipe, the clamping arm comprises oppositely installed first and second arc-shaped arms which are hinged, and a second telescopic rod used for driving; and further comprises a latch mechanism and a magnetorheological mechanism, wherein the magnetorheological mechanism comprises a magnetorheological liquid bag installed close to an inner side wall and an excitation coil used for providing a strong magnetic field. The magnetorheological flexible and close locking and the latch mechanical clamping locking structure are integrated, and the two structures are in cooperation, so that the joint pipe is effectively prevented from slipping, moving and accidentally falling during the pulling process, the locking reliability is greatly improved, and the operation requirement of the pipe pulling machine for large load pulling is met.