CN212863780U - Rope end fixing device for single reel - Google Patents

Abstract

The utility model relates to a rope end fixing device for a single reel.A reel bracket is connected with an oscillating body through a pin shaft, the lower end of the oscillating body is of a cavity structure, a rotary connecting rod is arranged in the cavity, and the bottom of the rotary connecting rod extends out of the oscillating body and is connected with a steel wire rope through a rope wedge; wherein the outer circumference of the top of the rotary connecting rod is coaxially matched with a bearing seat which is clamped at the opening at the lower end of the swinging body; a thrust ball bearing is arranged on the upper surface of the bearing seat; the top of the rotary connecting rod is provided with a limiting boss, the upper surface of the thrust ball bearing is limited on the lower surface of the limiting boss, vertical end surfaces are arranged on two sides of the limiting boss, and the inner end surfaces of the set screws connected with two sides of the oscillating body are respectively tightly propped against the vertical end surfaces of the corresponding positions. The device can effectively release the curling of the steel wire rope caused by rotation, and effectively avoids the winding phenomenon among the steel wire ropes.

Description

Rope end fixing device for single reel

Technical Field

The utility model relates to a rope end fixing device for single reel belongs to the supporting device of the electric winch reel in harbour hoisting machinery field.

Background

With the increase of the packing amount of modern container ships, the lifting height of a shore bridge of port loading and unloading equipment reaches 60-70m and tends to be increased continuously, so that the downward probing height of a steel wire rope reaches more than 65m, the modern lifting steel wire rope is generally manufactured by adopting a winding method and is formed by twisting steel wires (or strands) with certain sections and surface states according to certain rules. Therefore, the common steel wire rope has certain rotation, the torque is accumulated to a certain degree to cause the rotation of the lifting steel wire rope, and the steel wire rope used by the crane can generate the torque when stressed no matter which type, specification and brand are used. The torque is caused by the manufacturing method of the steel wire rope, when the steel wire rope is manufactured, steel wires are firstly manufactured and spirally twisted together to form strands, and then a plurality of strands are spirally twisted together to form the steel wire rope. When the force is applied, the steel wire and the strand are straightened, the steel wire rope rotates, the steel wire rope penetrating between the lifting hook and the pulley block is twisted together, the lifted weight also rotates along with the lifting hook, and the lifted weight is difficult to continue to be lifted or put down. The rotation of the hook can affect the normal operation of the hoisting operation, seriously threatens the safety of operators and equipment, and therefore must be avoided. When the steel wire rope is purchased, the non-rotating steel wire rope is selected as far as possible under the condition that other conditions are met. Although a crane hoisting mechanism for maintenance of a shore bridge adopts a non-rotating steel wire rope, the deflection of a lifting hook of the crane often exceeds 180 degrees, and the steel wire rope is wound together to influence the hoisting work.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a rope end fixing device for single reel, the device can effectively release the curling of wire rope because of rotatory production, has effectively avoided the emergence of winding phenomenon between wire rope.

For solving the above problems, the specific technical scheme of the utility model is as follows: a rope end fixing device for a single winding drum is characterized in that a winding drum support is connected with an oscillating body through a pin shaft, the lower end of the oscillating body is of a cavity structure, a rotary connecting rod is arranged in a cavity, and the bottom of the rotary connecting rod extends out of the oscillating body and is connected with a steel wire rope through a rope wedge; wherein the outer circumference of the top of the rotary connecting rod is coaxially matched with a bearing seat which is clamped at the opening at the lower end of the swinging body; a thrust ball bearing is arranged on the upper surface of the bearing seat; the top of the rotary connecting rod is provided with a limiting boss, the upper surface of the thrust ball bearing is limited on the lower surface of the limiting boss, vertical end surfaces are arranged on two sides of the limiting boss, and the inner end surfaces of the set screws connected with two sides of the oscillating body are respectively tightly propped against the vertical end surfaces of the corresponding positions.

The bottom surface of the inner cavity of the swinging body is an inwards concave spherical surface, and the bottom surface of the bearing seat is a spherical bearing and matched with the inwards concave spherical surface of the swinging body.

The utility model provides a rope end fixing device for single reel adopts built-in thrust ball bearing, eliminates wire rope and because of the moment of torsion effect of rotatory production, and the winding of wire rope is stopped in the deflection that produces when can preventing the lifting hook from lifting by crane the heavy object, has effectively solved the problem of the internal stress gathering when wire rope twists tight, excellent in use effect, firm safety structure is reasonable, and the preparation is convenient, is suitable for and uses on the high hoist crane of rising.

Drawings

Fig. 1 is a schematic structural view of a rope end fixing device for a single reel.

Fig. 2 is an axial sectional view of fig. 1.

Detailed Description

As shown in fig. 1 and 2, a rope end fixing device for a single reel is characterized in that a reel bracket 2 is connected with a swinging body 3 through a pin shaft 1, the lower end of the swinging body 3 is of a cavity structure, a rotating connecting rod 5 is arranged in the cavity, and the bottom of the rotating connecting rod 5 extends out of the swinging body 3 and is connected with a steel wire rope 8 through a rope wedge 7; wherein, the outer circumference of the top of the rotary connecting rod 5 is coaxially matched with a bearing seat 4, and the bearing seat 4 is clamped at the opening at the lower end of the swinging body 3; a thrust ball bearing 6 is arranged on the upper surface of the bearing block 4; the top of the rotary connecting rod 5 is provided with a limit boss 9, the upper surface of the thrust ball bearing 6 is limited on the lower surface of the limit boss 9, vertical end surfaces are arranged on two sides of the limit boss 9, and the inner end surfaces of the set screws 10 connected with two sides of the oscillating body 3 are respectively tightly propped against the vertical end surfaces of the corresponding positions. The bottom surface of the inner cavity of the swinging body 3 is an inwards concave spherical surface, and the bottom surface of the bearing seat 4 is a spherical bearing and is matched with the inwards concave spherical surface of the swinging body 3 so as to adapt to the action of space division force when the steel wire rope is wound on the winding drum.

The working process of the rope end fixing device for the single winding drum comprises the following steps: before the steel wire rope 8 lifts the heavy object, the set screw 10 is tightly propped against the limiting boss 9, then the heavy object is lifted, and the steel wire rope 8 is stressed in the lifting process, so that certain torque is accumulated. The rotary connecting rod does not rotate in the hoisting process, so that the running reliability is ensured. When the steel wire rope 8 has no load after being lifted for a period of time, the fastening screws 10 at the two ends are loosened, the steel wire rope 8 unloads the torque, and the rotary connecting rod 5 is driven to rotate relative to the swinging body, so that the steel wire rope is prevented from being further wound.

Claims (2)

1. The utility model provides a rope end fixing device for single reel which characterized in that: the drum support (2) is connected with the swinging body (3) through a pin shaft (1), the lower end of the swinging body (3) is of a cavity structure, a rotating connecting rod (5) is arranged in the cavity, and the bottom of the rotating connecting rod (5) extends out of the swinging body (3) and is connected with a steel wire rope (8) through a rope wedge (7); wherein the outer circumference of the top of the rotary connecting rod (5) is coaxially matched with a bearing seat (4), and the bearing seat (4) is clamped at the opening at the lower end of the swinging body (3); a thrust ball bearing (6) is arranged on the upper surface of the bearing seat (4); the top of the rotary connecting rod (5) is provided with a limiting boss (9), the upper surface of the thrust ball bearing (6) is limited on the lower surface of the limiting boss (9), vertical end faces are arranged on two sides of the limiting boss (9), and the inner end faces of the set screws (10) connected with two sides of the oscillating body (3) are respectively tightly propped against the vertical end faces of corresponding positions.

2. The rope end fixing device for a single reel as claimed in claim 1, wherein: the bottom surface of the inner cavity of the swinging body (3) is an inwards concave spherical surface, and the bottom surface of the bearing seat (4) is a spherical bearing and is matched with the inwards concave spherical surface of the swinging body (3).

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