CN201102865Y - Anti-breaking safety device of lifting hook - Google Patents

Abstract

The utility model relates to a novel crane hook anti-fracture rope safety device, consisting of a locking device and a stretching device, wherein, the locking device consists of a conical shell, a locking block, a spring and a stop lock pin, and the stretching device consist of a transitional pulley, a pull rod and a pressure spring. When the wire rope of the crane fractures suddenly, the pressure on the transitional pulley eliminates and the pressure spring ejects rapidly to drive the pull rod and then pull the narrow wire rope to pull out the stop lock pin on the locking device; the spring inside the locking device ejects to promote the locking block to move to further clamp the wire rope tightly; the shell of the locking device and the locking block are conical with self-locking function, and the wire rope stretches more and more tightly to achieve the goal of preventing the crane hook and the weight drop from dropping to have the function of safety protection.

Description

Load hook anti-break rope safety device

Technical field

The utility model load hook anti-break rope safety device relates to elevator machinery safety guard field.

Background technology

At present, various elevator machineries are not furnished with the anti-break rope safety device on the suspension hook when operation, and when rising when reusing wire cable rupture, weight and suspension hook will fall, and cause fatal accident and property damage.

Summary of the invention

For fear of the problems referred to above that cause owing to wire cable rupture, the utility model provides a kind of can effectively clamp steel rope when wire cable rupture, prevent the fender guard that suspension hook and weight fall.

The technical scheme that its technical matters that solves the utility model adopts is: a cover locking device and a cover pulling device are installed in the suspension hook group, the latching device shell is a cone, in two tapered involutory latch segments are arranged, latch segment links to each other with spring, spring pins by ending lock pin; Pulling device is made up of the transition pulley of its end and pull bar, pressure spring, has seizing wire to link to each other ending between lock pin and pull bar.When normal hoisting heavy, hoist rope compresses the transition pulley, and steel rope can freely be walked in suspension hook, can not produce misoperation.When hoist rope ruptured suddenly, transition pulley upward pressure was eliminated, and pressure spring ejects rapidly, drive pull bar, spur seizing wire again, the lock pin that ends on the latching device is pulled out, the spring in the latching device ejects, the motion of promotion latch segment, thereby clamping steel rope, latching device shell and latch segment all are bevelled, have self-locking action, steel rope can draw tighter and tighter, reaches to prevent the purpose of falling.

The beneficial effects of the utility model are that hoist rope can effectively clamp steel rope when rupturing, and prevents that suspension hook and weight from falling, and is active in one's movements, and is safe and reliable.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an A-A cutaway view of the present utility model

1. hoist ropes among the figure, 2. spring, 3. plate washer, 4. latch segment 5. ends lock pin, 6. seizing wire, 7. leading sheave, 8. conical shell, 9. gin wheel, 10. pulling device shell, 11. pressure springs, 12. pull bar, 13. lock shafts, 14. transition pulleys, 15. suspension hooks, 16. anti-slip insurances.

The specific embodiment

When (1) hoist rope ruptured, the pressure on the transition pulley (9) was eliminated among the figure, and pressure spring (11) ejects rapidly, drive pull bar (12), spur seizing wire (6) again, the lock pin (5) that ends on the latching device is pulled out, the spring (2) in the latching device ejects, promote latch segment (4) motion, thereby locking hoist rope (1), latching device shell (8) all is bevelled with latch segment (4), has self-locking action, steel rope can draw tighter and tighter, reaches to prevent the purpose of falling.

Claims (1)

1. a load hook anti-break rope safety device is made up of latching device and pulling device, and latching device is by conical shell, latch segment, spring, ends lock pin and constitutes; Pulling device is made up of transition pulley and pull bar, pressure spring, it is characterized in that: end between lock pin and pull bar and have seizing wire to link to each other, by seizing wire pulling lock pin only.

Images