CN112279128A

CN112279128A - Rope loosening protection mechanism of winch

Info

Publication number: CN112279128A
Application number: CN202010940215.7A
Authority: CN
Inventors: 魏艳; 杨冬雪; 周常新; 李卫民; 郑卫芳; 安洪军; 王孝荣; 乐宇航; 王欣
Original assignee: China Institute of Atomic of Energy
Current assignee: China Institute of Atomic of Energy
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-01-29

Abstract

The invention relates to a slack rope protection mechanism for a hoist, comprising a slack rope guide wheel group, a sensor and an induction plate; the induction plate is mounted on the slack rope guide wheel group; the slack rope guide wheel group is installed on the On the hoist; when the load-bearing rope of the hoist passes the load-bearing of the loose rope guide wheel group, the position of the induction plate changes with the deformation of the elastic member, so that the sensor matched with the induction plate sends a stop signal. The beneficial effects of the present invention are as follows: the present invention realizes the real-time signal transmission of the object reaching the designated position through the loose rope guide wheel group and the elastic component, so as to stop the motor operation in time and avoid the load-bearing rope from being too loose and falling off.

Description

Rope loosening protection mechanism of winch

Technical Field

The invention belongs to the field of nuclear industry, and particularly relates to a rope loosening protection mechanism of a winch.

Background

In a radioactive experiment or operation facility, transfer work of an experiment or operation bench device in a facility laboratory is often performed by a sealed transfer box. The hoisting mechanism in the sealed transfer box is used for hoisting the rack equipment to be transferred into the sealed transfer box or into a laboratory.

Due to the special radioactive environment, observation is often not in place when equipment is hoisted, so that a hoisting and lifting mechanism needing hoisting has higher safety protection measures so as to ensure the safety of equipment and operation when the equipment rack is hoisted.

When an object is hoisted by the conventional winch, the condition that a bearing rope falls off from a wheel shaft due to the fact that the object cannot be stopped in time after reaching a designated position sometimes occurs.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a rope loosening protection mechanism for a winch, which can realize the timely stop of a hoisting object after the hoisting object reaches a designated position, so that the bearing rope is prevented from falling off from a wheel shaft.

The technical scheme of the invention is as follows:

a rope-loosening protection mechanism of a winch comprises a rope-loosening guide wheel set, a sensor and an induction plate; the induction plate is arranged on the rope loosening guide wheel set; the rope loosening guide wheel set is arranged on the winch through an elastic component; when the bearing rope of the winch bypasses the rope loosening guide wheel set to bear, the position of the induction plate changes along with the deformation of the elastic component, so that the sensor matched with the induction plate sends a stop signal.

Further, in the rope loosening protection mechanism for the winch, the rope loosening guide wheel set comprises a rear guide wheel set; the rear guide wheel set comprises a second wheel shaft and a second mounting seat; the second wheel shaft is arranged in the second mounting seat and can freely rotate, and the second mounting seat is arranged on the winch through an elastic component so as to drive the induction plate to change position along with the deformation of the elastic component; the load-bearing rope of the winch bypasses the second wheel shaft to cause the elastic component to deform when bearing load.

Further, in the rope-loosening protection mechanism for the winch, the rope-loosening guide wheel set further comprises a front guide wheel set; the front guide wheel set comprises a first wheel shaft and a first mounting seat; the first wheel shaft is installed in the first installation seat and can rotate freely, and the first installation seat is installed on the winch.

Further, in the rope loosening protection mechanism for the winch, the first mounting seat is also provided with a mounting plate; the mounting plate is rotatable about the axis of the first axle; the induction plate and the mounting plate are relatively fixed and can change positions along with the movement of the second mounting seat.

Further, in the rope loosening protection mechanism for the winch, a third wheel shaft is arranged on the mounting plate; the bearing rope of the winch sequentially rounds the first wheel shaft, the third wheel shaft and the second wheel shaft to bear the weight.

Further, in the rope loosening protection mechanism for the winch, the elastic component comprises a guide rod and a spring; the guide rod is fixedly connected with the winch, and the second mounting seat is mounted on the guide rod through the spring.

Further, in the rope loosening protection mechanism for the winch, the bearing direction of the bearing rope after the bearing rope bypasses the second wheel axle is consistent with the deformation direction of the elastic component.

Further, in the rope loosening protection mechanism for the winch, the sensing plate is provided with a sensing part matched with the sensor.

Further, foretell hoist engine slack rope protection mechanism, the sensor is installed on the sealing-box casing mounting hole through sealed the pad in order to guarantee the sealed of mounting hole department and be convenient for change outside the box.

The invention has the following beneficial effects:

the invention realizes real-time signal transmission when an object reaches a designated position through the rope releasing guide wheel set and the elastic component so as to stop the motor operation in time and avoid the falling of the bearing rope due to over-loosening.

Drawings

Fig. 1 is a schematic structural diagram of a rope loosening protection mechanism of a winch according to the present invention.

Fig. 2 is a schematic structural diagram of another angle of the rope loosening protection mechanism of the winch of the present invention.

In the above drawings, 1, a front guide wheel group; 2. a rear guide wheel set; 3. a sensor; 4. a spring; 5. a guide rod.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

As shown in fig. 1, the invention discloses a rope-loosening protection mechanism of a winch, which comprises a rope-loosening guide wheel set, a sensor 3 and an induction plate; the induction plate is arranged on the rope loosening guide wheel set; the rope loosening guide wheel set is arranged on the winch through an elastic component; when the bearing rope of the winch bypasses the rope loosening guide wheel set to bear the load, the position of the induction plate changes along with the deformation of the elastic component, so that the sensor 3 matched with the induction plate sends a stop signal. And the induction plate is provided with an induction component matched with the sensor 3. The sensing part is the upwarp part of sensing plate tip, can avoid the sensing plate rest to produce the erroneous judgement to sensor 3 interference through upwarp part and the cooperation of sensor 3. The raised portion may be curved in any other direction. The sensor 3 is arranged on a mounting hole of the sealing box shell through a sealing gasket; so set up and can avoid the sensor to pollute at the whole radioactivity of incasement, the trouble of being convenient for simultaneously is changed sensor 6 from the box outside to sealed the pad can guarantee the sealed of mounting hole department.

As shown in fig. 1, the slack rope guide pulley group includes a rear guide pulley group 2; the rear guide wheel set 2 comprises a second wheel shaft and a second mounting seat; the second wheel shaft is arranged in the second mounting seat and can freely rotate, and the second mounting seat is arranged on the winch through an elastic component so as to drive the induction plate to change position along with the deformation of the elastic component; the load-bearing rope of the winch bypasses the second wheel shaft to cause the elastic component to deform when bearing load. The elastic component is shown in figure 2 and comprises a guide rod 5 and a spring 4; the guide rod 5 is fixedly connected with the winch, and the second mounting seat is mounted on the guide rod 5 through the spring 4. The bearing direction of the bearing rope after the bearing rope winds around the second wheel axle is consistent with the deformation direction of the elastic component. In this embodiment, the direction behind the bearing rope round the second shaft is vertical direction, and is unanimous with the direction that the spring compressed/stretched, so, can reduce the ascending atress of spring in non-axial, extension spring's life.

The rope loosening guide wheel set further comprises a front guide wheel set 1; the front guide wheel set 1 comprises a first wheel shaft and a first mounting seat; the first wheel shaft is installed in the first installation seat and can rotate freely, and the first installation seat is installed on the winch. The first mounting seat is also provided with a mounting plate; the mounting plate is rotatable about the axis of the first axle; the induction plate and the mounting plate are relatively fixed and can change positions along with the movement of the second mounting seat. A third wheel shaft is arranged on the mounting plate; the bearing rope of the winch sequentially rounds the first wheel shaft, the third wheel shaft and the second wheel shaft to bear the weight. The function of the front guide wheel group 1 is to adjust the direction of the bearing rope passing by the second wheel axle.

Bearing rope on the hoist engine is connected with lifting hook hoist subassembly behind the preceding, the back guide pulley group of rope loosening protection mechanism, at the lifting hook, under the hoist dead weight effect, wire rope atress tensioning, rope loosening protection mechanism back guide pulley subassembly is pushed down by wire rope, the sensor is kept away from to the last sensor contact of guide pulley subassembly, after the hoist put down the weight wire rope loose, the spring on the guide arm can lift up the sensing plate on the front guide pulley subassembly, make sensor subassembly send stop signal, hoist servo motor will brake, avoid the bearing rope too loose and drop.

The rope loosening protection mechanism can prevent the bearing rope from being loosened too much to cause the steel wire rope on the winch to be separated from the groove and jump, effectively ensures the safety of hoisting and lifting, and simultaneously prevents the lower lifting hook lifting appliance from being lowered too much to automatically fall off from the hoisting equipment and hit the equipment or other nearby equipment.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A hoist slack-rope protection mechanism, characterized in that: it comprises a slack-rope guide wheel group, a sensor and an induction plate; the induction plate is mounted on the slack-rope guide wheel group; the slack-rope guide wheel group passes through elastic The component is installed on the hoist; when the load-bearing rope of the hoist passes the load-bearing of the loose rope guide wheel group, the position of the induction plate changes with the deformation of the elastic member, so that the sensor matched with the induction plate sends a stop signal.

2. The hoist slack-rope protection mechanism according to claim 1, wherein: the slack-rope guide wheel group comprises a rear guide wheel group; the rear guide wheel group comprises a second axle and a second mounting seat; the The second axle is installed in the second installation seat and can rotate freely. The second installation seat is installed on the hoist through an elastic member to change the position of the induction plate with the deformation of the elastic member; the load-bearing rope of the hoist goes around The second axle is used to cause the elastic member to deform when bearing a load.

3. The hoist slack-rope protection mechanism according to claim 2, characterized in that: the slack-rope guide wheel group further comprises a front guide wheel group; the front guide wheel group comprises a first axle and a first mounting seat; The axle is installed in the first installation seat and can rotate freely, and the first installation seat is installed on the hoist.

4. The hoist slack-rope protection mechanism according to claim 3, wherein: the first mounting seat is further provided with a mounting plate; the mounting plate can rotate around the axis of the first axle; the induction The plate is relatively fixed with the mounting plate, and can change its position with the movement of the second mounting seat.

5. The hoist slack-rope protection mechanism according to claim 4, wherein: the mounting plate is provided with a third axle; the load-bearing rope of the hoist passes around the first axle, the third axle and the second axle in turn and bears the load .

6 . The hoisting machine slack-rope protection mechanism according to claim 2 , wherein the elastic component comprises a guide rod and a spring; the guide rod is fixedly connected to the hoist, and the second mounting seat is installed on the hoist through the spring. 7 . on the guide rod.

7 . The slack-rope protection mechanism for a hoist according to claim 2 , wherein the load-bearing direction of the load-bearing rope after it goes around the second axle is consistent with the deformation direction of the elastic member. 8 .

8. The hoist slack-rope protection mechanism according to claims 1-7, characterized in that: the sensing plate is provided with a sensing component that cooperates with the sensor.

9. The hoist slack-rope protection mechanism according to claim 2, wherein the sensor is installed on the mounting hole of the sealed box shell through a gasket to ensure the sealing of the mounting hole and facilitate replacement outside the box.