阅读说明：本技术 卷扬钢丝绳防松装置 (Anti-loosing device for hoisting steel wire rope ) 是由 邓印华 杨年 章文强 汪凯 于 2021-06-18 设计创作，主要内容包括：本发明提供一种卷扬钢丝绳防松装置,包括对应每股钢丝绳独立设置的压紧单元,压紧单元上设置有轮芯方向平行于卷扬轴芯并压合在钢丝绳上的导向压轮,导向压轮与钢丝绳之间的压应力垂直于卷扬轴芯并使钢丝绳具有偏离当前位置的趋势。上述方案中通过将钢丝绳整体防松改为单根防松,确保每根钢丝绳松脱时,都能停机起到安全防护作用。(The invention provides a hoisting steel wire rope anti-loosening device which comprises a pressing unit which is independently arranged corresponding to each steel wire rope, wherein a guide pressing wheel is arranged on the pressing unit, the wheel core direction of the guide pressing wheel is parallel to a hoisting shaft core and is pressed on the steel wire rope, and the compressive stress between the guide pressing wheel and the steel wire rope is perpendicular to the hoisting shaft core and enables the steel wire rope to have the tendency of deviating from the current position. In the scheme, the whole looseness prevention of the steel wire rope is changed into single looseness prevention, so that the machine can be stopped to play a safety protection role when each steel wire rope is loosened.)

1. The utility model provides a hoist wire rope locking device which characterized in that: the steel wire rope pressing device comprises pressing units which are independently arranged corresponding to each strand of steel wire rope, wherein a guide pressing wheel (10) is arranged on each pressing unit, the wheel core direction of each pressing unit is parallel to a winding shaft core and pressed on the steel wire rope, and the compressive stress between each guide pressing wheel (10) and the steel wire rope is perpendicular to the winding shaft core and enables the steel wire rope to have the tendency of deviating from the current position.

2. The hoisting rope looseness prevention device of claim 1, wherein: the guide pinch roller (10) is rotatably connected to a cross bar (21) at the upper end of the swing frame (20), the lower end of the swing frame (20) is hinged to the base (30), and the direction of a hinged shaft of the swing frame is parallel to the direction of a wheel core of the guide pinch roller (10).

3. The hoisting rope looseness prevention device of claim 1, wherein: the periphery of the guide pinch roller (10) is provided with a wheel groove (11) used for accommodating a steel wire rope, and the notch of the wheel groove (11) faces outwards along the radial direction of the pinch roller (10).

4. The hoisting rope looseness prevention device of claim 2, wherein: a limiting rod (22) with the rod core direction parallel to the wheel core direction of the guide pinch roller (10) is arranged on the swing frame (20), and a gap for a steel wire rope to pass through is formed between the wheel surface of the guide pinch roller (10) and the limiting rod (22).

5. The hoisting rope looseness prevention device of claim 4, wherein: a limiting wheel (23) is rotatably arranged on the limiting rod (22) at the position corresponding to the notch of the wheel groove (11), the outer ring of the limiting wheel (23) is partially embedded into the wheel groove (11), and a gap for a steel wire rope to pass through is formed between the outer wall of the limiting wheel (23) and the groove bottom of the wheel groove (11).

6. The hoisting rope looseness prevention device of claim 2, wherein: the guide pinch roller (10) and the cross bar (21) form sliding connection along the bar length direction of the cross bar (21).

7. The hoisting rope looseness prevention device of claim 5, wherein: the limiting wheel (23) and the limiting rod (22) form sliding connection along the rod length direction of the limiting rod (22).

8. The hoisting rope looseness prevention device of claim 2, wherein: the swing frame (20) is provided with a spring (40) or a counterweight for driving the swing frame to topple and swing.

9. The hoisting rope looseness prevention device of claim 2, wherein: a travel switch for driving the winch to stop is arranged on a swinging path of the swinging frame (20), and the steel wire rope exceeds the conventional maximum loosening amount when the swinging frame (20) touches the travel switch.

Technical Field

The invention relates to the field of lifting appliances, in particular to a locking device for a hoisting steel wire rope.

Background

The hoisting hook is generally lifted up and down by using a hoisting and winding steel wire rope in the field of lifting tools, however, a single steel wire rope easily causes shaking of a lifted object and is difficult to ensure the posture of the lifted object, so that the lifted object with higher hoisting requirement is lifted by adopting two steel wire ropes, the two steel wire ropes are respectively connected to two ends of a cylindrical hoisting tool, and the two steel wire ropes are wound on a hoisting drum along opposite directions.

A double-strand steel wire rope anti-loosening device in the prior art is shown in fig. 1 and comprises a swing frame, wherein two guide pressing wheels are arranged on a swing rod of the swing frame, notches of the guide pressing wheels are provided with wheel grooves deviating from a wheel core, a limiting hole for a steel wire rope to pass through is formed between a limiting rod and the wheel grooves, the direction of the rod core is parallel to the wheel core, and the swing force of the swing frame is perpendicular to a shaft core of a winch and enables the steel wire rope to have a tendency of deviating from the current position. The technical scheme is that once the steel wire rope is loosened, the swinging force of the swinging frame can drive the steel wire rope to deviate from the current position to change the loosening amount of the steel wire rope into the swinging amount of the swinging frame, and the swinging of the swinging frame can be used as a parking signal of the winch to realize the real-time parking of the winch by setting the proximity switch. However, the above scheme can only play a role under the condition that two steel wire ropes are loosened simultaneously (namely, a hoisted object is clamped), once only one steel wire rope is loosened, the device can not swing, and at the moment, if an operator cannot find and stop the hoisting of the steel wire rope in time, the steel wire rope on one side of loosening can be caused to be reversely clamped on the winding drum, be in disorder of grooves, be stirred to a hoisting bearing seat and other faults, and the damage to the steel wire rope, the rope drum and the bearing seat is caused.

Disclosure of Invention

The invention aims to provide a tensioning anti-loose or loose parking device of a hoisting device, which can be effective when only one strand of steel wire rope is loose.

In order to achieve the purpose, the invention adopts the technical scheme that: a hoisting steel wire rope anti-loosening device comprises a pressing unit which is independently arranged corresponding to each steel wire rope, wherein a guide pressing wheel is arranged on the pressing unit, the direction of a wheel core is parallel to a hoisting shaft core, the guide pressing wheel is pressed on the steel wire rope, and the compressive stress between the guide pressing wheel and the steel wire rope is perpendicular to the hoisting shaft core and enables the steel wire rope to have the tendency of deviating from the current position.

In the scheme, the whole looseness prevention of the steel wire rope is changed into single looseness prevention, so that the machine can be stopped to play a safety protection role when each steel wire rope is loosened.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

A hoisting steel wire rope anti-loosening device comprises a pressing unit which is independently arranged corresponding to each steel wire rope, wherein a guide pinch roller 10 is arranged on the pressing unit, the direction of a wheel core of the guide pinch roller is parallel to a hoisting shaft core, the guide pinch roller is pressed on the steel wire rope, and the compressive stress between the guide pinch roller 10 and the steel wire rope is perpendicular to the hoisting shaft core, so that the steel wire rope has the tendency of deviating from the current position. In the scheme, the whole looseness prevention of the steel wire rope is changed into single looseness prevention, and the steel wire rope can be tensioned by the independently arranged guide pressing wheels 10 to ensure that the machine can be stopped to play a safety protection role when each steel wire rope is loosened.

The guide pinch roller 10 is rotatably connected to a cross bar 21 at the upper end of the swing frame 20, the lower end of the swing frame 20 is hinged to the base 30, and the direction of a hinged shaft of the swing frame is parallel to the direction of a wheel core of the guide pinch roller 10. The guide pinch roller 10 is pressed on the steel wire rope by the swinging of the swinging frame 20.

The periphery of the guide pinch roller 10 is provided with a wheel groove 11 for accommodating a local part of the steel wire rope, and the notch of the wheel groove 11 faces outwards along the radial direction of the pinch roller 10. The steel wire rope is locally placed in the wheel groove 11, so that the steel wire rope can be effectively prevented from deviating.

The swing frame 20 is provided with a limiting rod 22 with a rod core direction parallel to the wheel core direction of the guide pinch roller 10, and a gap for a steel wire rope to pass through is formed between the wheel surface of the guide pinch roller 10 and the limiting rod 22. The limiting rod 22 and the guide pinch roller 10 together limit to prevent the steel wire rope from deviating, so that the steel wire rope is always positioned in the gap between the wheel surface of the guide pinch roller 10 and the limiting rod 22

A limiting wheel 23 is rotatably arranged on the limiting rod 22 at the position corresponding to the notch of the wheel groove 11, the outer ring of the limiting wheel 23 is partially embedded into the wheel groove 11, and a gap for a steel wire rope to pass through is formed between the outer wall of the limiting wheel 23 and the groove bottom of the wheel groove 11. A limiting wheel 23 is additionally arranged on the guide wheel of the rope pressing part, so that the steel wire rope is prevented from being separated from the guide pressing wheel 10 in the operation process, and the faults of loosening of the steel wire rope, groove disorder and the like are avoided.

The guide pinch roller 10 and the cross bar 21 form sliding connection along the bar length direction of the cross bar 21. Because the steel wire rope can generate displacement along the axial direction of the winch when being wound and folded and loosened, the guide pressing wheel 10 which is in contact with the steel wire rope is arranged to be in sliding connection, so that the steel wire rope can move along with the steel wire rope conveniently.

The limiting wheel 23 and the limiting rod 22 form sliding connection along the rod length direction of the limiting rod 22. Because the steel wire rope can generate displacement along the axial direction of the winch when being wound and folded and loosened, the limiting wheel 23 which is in contact with the steel wire rope is arranged to be in sliding connection, so that the steel wire rope can move along with the steel wire rope conveniently.

The swing frame 20 is provided with a spring 40 or a counterweight that urges it to swing upside down.

A travel switch for driving the winch to stop is arranged on a swinging path of the swinging frame 20, and when the swinging frame 20 touches the travel switch, the steel wire rope exceeds the conventional maximum loosening amount. The signal line of the proximity switch is connected into the emergency stop loop, so that the loosening signal directly cuts off the circuit, the equipment is stopped, and the fault amplification is prevented.