CN209797340U

CN209797340U - Rope loosening protection device

Info

Publication number: CN209797340U
Application number: CN201920411329.5U
Authority: CN
Inventors: 施维枝; 黄其明; 谈存真
Original assignee: CISDI Engineering Co Ltd
Current assignee: CISDI Engineering Co Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2019-12-17
Anticipated expiration: 2029-03-28

Abstract

the utility model relates to a slack rope protection device, which belongs to the technical field of hoisting machinery and comprises a swing arm with one end hinged, wherein a roller matched with a steel wire rope is installed at the free end of the swing arm, a safety switch triggered by the cooperation of the swing arm is arranged below the swing arm, and when the steel wire rope is loosened, the roller and the swing arm swing downwards due to dead weight to trigger the safety switch and alarm, thereby controlling the hoisting brake and stopping the machine; the roller, the pulley mechanism and the safety switch are arranged on the same support, and the site position of the safety switch can be adjusted, so that the installation, the disassembly and the daily maintenance are convenient; the hoisting device has the advantages of simple overall structure, convenience in maintenance and low cost, and has important significance in improving the safety and reliability of hoisting.

Description

Rope loosening protection device

Technical Field

The utility model belongs to the technical field of hoisting machinery, a slack rope protection device is related to.

Background

The hoisting winch is mainly used for vertically hoisting heavy objects or trolleys, elevators, cages and other actuating mechanisms within a certain range, and a steel wire rope is taken as an important flexible bearing member in the hoisting winch, is accurately and smoothly wound on a winding drum, and can smoothly operate after passing through a pulley mechanism. When the hoisting winch works, the steel wire rope on the winding drum is often continuously transferred due to reasons such as equipment blockage, the steel wire rope is loose around the winding drum and cannot be stretched and directly transferred, the loose steel wire rope is easy to cause the steel wire rope to be wound or disorderly when the winding drum is wound, the steel wire rope is broken and damaged, and serious potential safety hazards of hoisting and hoisting exist.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a simple structure, maintain convenient, cost-effective slack rope protection device.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a slack rope protection device, includes one end articulated swing arm, installs on the free end of swing arm with wire rope matched with running roller, the swing arm below is provided with the safety switch who relies on the swing arm cooperation to trigger, under the slack rope state, the running roller is owing to the dead weight nature lower hem with the swing arm, triggers safety switch.

Optionally, the hinged end of the swing arm is hinged with a hinged seat, and the hinged seat is fixedly arranged on the frame with the pulley mechanism.

optionally, a switch seat is arranged below the hinged seat, and the safety switch is arranged on the switch seat in a sliding mode.

Optionally, the safety switch is a contact switch or a non-contact switch.

The beneficial effects of the utility model reside in that:

1. the roller of the utility model has simple and compact structure and better processing manufacturability;

2. The roller, the pulley mechanism and the safety switch are arranged on the same support, the site position of the safety switch can be adjusted, and the installation, the disassembly and the daily maintenance are convenient;

3. The safety switch of the utility model adopts mature products, such as travel switches, proximity switches, reed switches and the like, thereby saving cost and being convenient for installation and use;

4. The utility model discloses simple structure, maintenance convenience, with low costs have the significance to the fail safe nature that improves the promotion hoist.

additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

Fig. 1 is a schematic structural view of a single steel wire rope winding and wire rope straightening state of the slack rope protection device of the present invention;

Fig. 2 is a schematic structural view of the single steel wire rope winding and loosening state of the steel wire rope of the slack rope protection device of the present invention;

fig. 3 is a schematic structural diagram of the double-wire rope winding and wire rope straightening state of the rope loosening protection device of the present invention.

Reference numerals: the device comprises a winch 1, a steel wire rope 2, a roller 3, a safety switch 4, a pulley structure 5, a pulley 51, a support 6, a hinged seat 7, a switch seat 8 and a swing arm 9.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 to 3, a rope-loosening protection device comprises a swing arm 9 with one end hinged, a hinge base 7 hinged to the hinge end of the swing arm 9, the hinge base 7 fixed on a frame with a pulley mechanism 5, a pulley 51 arranged on the pulley mechanism 5, a roller 3 matched with a steel wire rope 2 arranged on the free end of the swing arm 9, a safety switch 4 triggered by the swing arm 9, a switch base 8 arranged below the hinge base 7, the safety switch 4 arranged on the switch base 8 in a sliding manner, the safety switch 4 being a contact switch or a non-contact switch, the installation position of the safety switch being adjusted on the switch base 8 according to the initial position of the swing arm 9, the state signal of the safety switch 4 being connected to a control system, the control system starting a brake function to stop the brake of the hoist 1 after receiving the trigger signal of the safety switch 4, the end of the steel wire rope 2 being fixed on the hoist 1, the free end is wound around the roller 3 and the pulley 51 in sequence to form matching.

The winding mode of the winch 1 is set as single steel wire rope 2 winding or double steel wire rope 2 winding, only one rope loosening protection device needs to be arranged under the condition that the single steel wire rope 2 is wound, and the double steel wire rope 2 is wound, so that parallel or independent double rope grooves are formed in the winch 1, the rope loosening protection devices need to be arranged on two sides of the winch 1 symmetrically, and the installation method is consistent with that of the single rope loosening protection device.

when the steel wire rope 2 is stretched straight, the roller 3 and the swing arm 9 swing upwards due to the supporting force of the steel wire rope 2, the signal of the safety switch 4 is not triggered, and at the moment, the winch 1 works normally.

when the steel wire rope 2 is loosened, the roller 3 and the swing arm 9 swing downwards due to self weight to trigger the safety switch 4, a trigger signal of the full switch 4 is fed back to the control system, and the control system starts a braking function to enable the winch 1 to brake and stop and give an alarm.

The safety switch 4 is a switch that can be triggered by contact with the swing arm 9, or a switch that can be triggered by non-contact with the swing arm 9, both of which belong to the existing mature switch technology.

1. The roller 3 of the utility model has simple and compact structure and better processing manufacturability;

2. the roller 3, the pulley 51 and the safety switch 4 of the utility model are arranged on the same support, and the site position of the safety switch 4 can be adjusted, so that the installation, the disassembly and the daily maintenance are convenient;

3. The safety switch 4 of the utility model adopts mature products, such as a travel switch, a proximity switch, a reed switch and the like, thereby saving the cost and being convenient to install and use;

4. The utility model discloses simple structure, maintenance convenience, with low costs have the significance to the fail safe nature that improves promotion hoist 1.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A slack rope protection device which characterized in that: the rope releasing safety device comprises a swing arm with one end hinged, a roller matched with a steel wire rope is installed at the free end of the swing arm, a safety switch triggered by the cooperation of the swing arm is arranged below the swing arm, and the roller naturally swings down together with the swing arm due to dead weight in a rope releasing state to trigger the safety switch.

2. The slack rope protection device of claim 1, wherein: the hinged end of the swing arm is hinged with a hinged seat, and the hinged seat is fixedly arranged on the rack with the pulley mechanism.

3. The slack rope protection device of claim 2, wherein: a switch seat is arranged below the hinged seat, and the safety switch is arranged on the switch seat in a sliding mode.

4. A slack rope protection device as claimed in claim 3, wherein: the safety switch is a contact switch or a non-contact switch.