Lifting-controllable protector

[0028] Example 1:

[0029] refer to Figure 1 to Figure 4 , this example is a single-rope controllable lift protector, including a fixed plate 1, a movable side plate 2, a sheave 3 and a rope reel seat 4 arranged between the fixed plate 1 and the movable side plate 2; the movable side plate 2 and The upper ends of the fixing plate 1 are positioned together by the first pin shaft 5, the rope pulley 3 is positioned on the fixing plate 1 by the second pin shaft 51; 41 and the arc surface 42 of the rope, the braking surface 41 is facing the side of the sheave 3, and cooperates with the sheave 3 to realize braking; Bending and forming, good integrity and good rigidity relationship; the braking surface 41 is formed by a steel plate, and has the braking surface 41 and the rope winding arc angle 411 connected with it, and two fixed axes perpendicular to the braking surface The hole surface 412 is fixed on the first pin shaft 5 by means of the two fixed shaft hole surfaces 412 .

[003

[0033] Embodiment 2:

[0034] refer to Figure 5 , Image 6 and Figure 7 , is an example of a double rope descending protector, its basic structure is the same as the above example, but there are two rope pulleys 3 between the fixed plate 1 and the movable side plate 2, and the two rope pulleys 3 are fixed to each other and pass through the second pin shaft. 51 is positioned on the fixed plate 1, that is, the two rope pulleys 3 are in a synchronous structure; the arc surface 42 of the rope winding seat 4 is provided with two rope grooves 32 corresponding to the two rope pulleys, so as to avoid the two ropes 7 crossing each other and being pinched. ; Rope seat 4 through the first pin 5 and a short pin 55 is fixed on the side of the fixed plate 1, to prevent the rope seat 4 from rotating.

[0035]In this structure, the positioning hole 21 on the movable side plate 2 is an open opening, which can be clamped to the end of the second pin shaft 51 after swinging to form a positioni