Mountaineering buckles have the following four characteristics:
1. Ellipse: symmetry. The most basic, the most practical. The smooth regular curve makes the equipment more flexible and easy to adjust the load. The advantages are: in the strong and sturdy spine and weak door control shaft, can withstand more load.
2.D: The asymmetric shape places most of the load on the strongest shoulders.
3. Offset D: D has greater asymmetry, which makes the gate opening wider.
4: pear shape /HMS: the top surface shape is larger than the shift D, generally larger. Suitable for Monte stationary lacing, and some types of buckle devices. XxxHMS mountaineering clasp, can also be used on fast falling Munte hooks (the size required, can be matched to both strands of the rope). This is the heaviest ring on the mountain.
Mountaineering buckles are divided into two categories:
1. Sturdy gate: A more traditional mountaineering clasp combines a sturdy metal door with a separate dowel and spring mechanism. Most modern locks are of the "keylock nose" type, and they are much harder to lock than the conventional grooves and pins. Most of the locking mechanisms are based on sturdy doors.
2. Wire door: A door made of a single curved spring wire, without a separate spring or dowel (this is a movable hinge '). Linear locks are lighter than solid doors and have similar strength. Linear doors are less likely to freeze than sturdy ones, which is an advantage for climbing mountains and climbing. This reduces the mass of the gate and makes the wire rope less prone to "gate fibrillation" because the climbing clasp will hit a rock or other hard surface on the way down, and the gate will open due to inertia, causing the gate to break. A SIMPLE WIRED GATE DESIGN (SIMILAR TO THE STRUCTURE OF THE ORIGINAL SOLID GATE) HAS a NOTCH, BUT THE LATEST STRUCTURES HAVE A GUARD RING OR a GUIDE WIRE AROUND THE SECTION WHERE THE CARABINER NOSE HOOK "CATCHES" TO STOP THE HOOK FROM SNAGGING.
Whether "straight door" or "curved door", whether solid or steel. The curved gate climbing ring is easier to grab with one hand, so it is often used on the head of the quick pull rope and mountain pull rope for climbing lead rope.