CN112279125A

CN112279125A - Sealed chamber hoisting and lifting mechanism

Info

Publication number: CN112279125A
Application number: CN202010941030.8A
Authority: CN
Inventors: 李卫民; 周常新; 魏艳; 杨冬雪; 郑卫芳; 王孝荣; 乐宇航; 安洪军; 朱玲凡
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 sealed box chamber hoisting mechanism, which comprises a servo motor, a winch, a bearing rope and a hook assembly, wherein the winch is arranged on the sealed box chamber; the bearing ropes are at least two and are respectively connected to different positions of the lifting hook component and wound on corresponding winches; the servo motor drives the winch to drive the bearing rope to be wound synchronously. The invention has the following beneficial effects: according to the invention, the plurality of bearing ropes are simultaneously connected to different positions of the hook component, so that the condition of torsion of a hoisting item caused by torsion when a single bearing rope bears the load is avoided.

Description

Sealed chamber hoisting and lifting mechanism

Technical Field

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

Background

The amplifier building rack transfer device is mainly used for transferring various large-scale equipment and solid wastes in a sealed box chamber in a facility and a driven arm of a mechanical arm in the box chamber, and is the only way for large-scale items of an amplifier experimental facility to enter and exit a hot chamber. And a hoisting mechanism is arranged at the top of the inner box of the rack transfer device and is used for hoisting the items in and out of the sealed box chambers.

Because the top space of the inner box is limited, the relative hoisting height is high (from the ground of the sealed box chamber to the top of the inner box), and the hoisting weight has certain requirements, a set of roller hoisting and lifting mechanism with a single double-strand steel wire rope is arranged in the inner box, but in operation, the steel wire rope is twisted in the hoisting process, and the hoisted object is twisted in the hoisting process. The interface of the sealed box chamber and the rack transfer device is a square interface, the items to be hoisted are also square, the interfaces are required to pass through in and out of the hot chamber according to the consistent direction, the hoisted items rotate in the hoisting process to change the direction, the interface is unfavorable for the entry and exit of the items, and due to the limitation of operating conditions, the items to be hoisted into the rack transfer device in the sealed box chamber cannot be contacted completely, the angle cannot be adjusted, so that the items are required to be repeatedly transferred to the bottom of the hot chamber to be adjusted through a manipulator in the hoisting process, and the hoisting operation difficulty and the workload are greatly increased.

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 sealed box chamber hoisting mechanism which can avoid the condition of torsion of a hoisted object in the process of hoisting the object.

The technical scheme of the invention is as follows:

a sealed box chamber hoisting mechanism comprises a servo motor, a winch, a bearing rope and a hook assembly; the bearing ropes are at least two and are respectively connected to different positions of the lifting hook component and wound on corresponding winches; the servo motor drives the winch to drive the bearing rope to be wound synchronously.

Further, in the sealed chamber hoisting mechanism, the winch is a multi-connection winch provided with a plurality of groove bodies, and each bearing rope is wound on the corresponding groove body.

Furthermore, the sealed box chamber hoisting and lifting mechanism also comprises a base and a bag sealing device; the base is detachably installed at the top of the sealed box chamber, the servo motor and the winch are installed on the base, and the bag sealing device is arranged outside the base.

Furthermore, the sealed box chamber hoisting mechanism also comprises a rope loosening protection mechanism; the rope loosening protection mechanism comprises a rope loosening guide wheel set, a first sensor and a first induction plate; the first induction plate is arranged on the rope loosening guide wheel set; the rope loosening guide wheel group is arranged on the base through an elastic component; when the bearing rope bypasses the rope loosening guide wheel set to bear the weight, the first sensing plate changes in position along with the deformation of the elastic component, so that the first sensor matched with the first sensing plate sends a stop signal.

Further, in the sealed box chamber hoisting mechanism, the rope releasing 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 base through an elastic component so as to drive the first induction plate to generate position change 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.

Furthermore, in the sealed box chamber hoisting mechanism, the rope releasing 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 arranged in the first mounting seat and can rotate freely, and the first mounting seat is arranged 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 first 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 sequentially rounds the first wheel shaft, the third wheel shaft and the second wheel shaft to bear the weight.

Furthermore, the sealed box chamber hoisting and lifting mechanism further comprises an upper limit protection mechanism, wherein the upper limit protection mechanism comprises a trigger part, a second sensor and a second induction plate; the triggering part is triggered when the lifting appliance reaches the upper limit, and drives the second sensing plate to move, so that the second sensor matched with the second sensing plate sends a stop signal.

Further, in the sealed box chamber hoisting mechanism, the trigger part comprises a mandril; the base is provided with an upper limiting hole for mounting the ejector rod; one end of the ejector rod extends out of the upper limiting hole to be matched with the lifting appliance, and the other end of the ejector rod is connected with the second induction plate; the ejector rod can move in the upper limiting hole after being triggered by the lifting appliance so as to drive the second induction plate to move.

Furthermore, according to the sealed box chamber hoisting mechanism, the pressing plate is arranged at the upper limiting hole, the ejector rod is provided with the convex ring, and an elastic part is arranged between the pressing plate and the convex ring.

Furthermore, in the sealed box chamber hoisting mechanism, the ejector rod is hinged with the second induction plate, the base is provided with a support, and the second induction plate is hinged on the support; the ejector rod drives the second induction plate to rotate around the support.

Further, in the sealed box chamber hoisting mechanism, the servo motor drives the winch to drive the bearing rope to be synchronously wound, and the variable frequency speed regulation is not started so that the hoisting process is changed rapidly and slowly.

The invention has the following beneficial effects:

according to the invention, the plurality of bearing ropes are simultaneously connected to different positions of the hook component, so that the condition of torsion of a hoisting item caused by torsion when a single bearing rope bears the load is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a sealed box chamber hoisting mechanism of the invention.

Fig. 2 is another angle structure diagram of the sealing box chamber hoisting mechanism of the invention.

Fig. 3 is a schematic structural diagram of the slack rope protection mechanism of the present invention.

Fig. 4 is a schematic structural view of another angle of the slack rope protection mechanism of the present invention.

Fig. 5 is a schematic structural diagram of an upper limit protection mechanism in the present invention.

In the above drawings, 1, a duplex winch; 2. an upper limit protection mechanism; 3. a slack rope protection mechanism; 4. a hook assembly; 5. a base; 6. a bag sealing device; 201. a top rod; 202. a spring; 203. pressing a plate; 204. a support; 205. a second induction plate; 206. a second sensor; 301. a front guide wheel group; 302. a rear guide wheel set; 303. a first sensor; 304. a spring; 305. a guide rod.

Detailed Description

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

As shown in fig. 1 and 2, the invention discloses a sealed box chamber hoisting mechanism, which comprises a servo motor, a winch, a bearing rope and a hook assembly 4; the bearing ropes are at least two and are respectively connected to different positions of the lifting hook component 4 and wound on corresponding winches; the servo motor drives the winch to drive the bearing rope to be wound synchronously.

As shown in fig. 1, the winch is a multiple winch provided with a plurality of groove bodies, and each bearing rope is wound on the corresponding groove body. In this embodiment, the number of the load-bearing ropes is two, and the winch is a duplex winch 1.

In this embodiment, the sealed box chamber hoisting mechanism further comprises a base 5 and a bag sealing device 6; the base 5 is detachably installed at the top of the sealed box chamber, the servo motor and the winch are installed on the base 5, and the bag sealing device 6 is arranged outside the base 5. Because the top space of the upper box body of the sealed box chamber is smaller, the sealed box chamber winding mechanism is integrated on the base 5 to form a modular design, and when maintenance is needed, the base 5 can be communicated with other parts of the winding mechanism to be disassembled together and then sent out for maintenance. In addition, the bag sealing device 6 is a quadrilateral bag sealing connecting disc with an arc periphery, a bag seal can be mounted on the connecting disc after a motor is detached when maintenance is needed, the base 5 and other related components can be lifted out of the whole bag seal at the top of the upper box body for maintenance, and the bag seal is reset after the debugging is qualified.

In this embodiment, the servo motor drives the winch to drive the bearing rope to synchronously wind, and the variable frequency speed regulation is not started so as to enable the hoisting process to have fast and slow changes. Under the condition of not starting variable frequency speed regulation, the lifting of the lifted object does not move at a uniform speed, the lifted object reaches the highest speed when reaching the upper limit position and the lowest speed when reaching the lower limit position, the speed requirement of hoisting the box chamber from high speed to low speed is met, and the hoisting process is more stable and reliable.

As shown in fig. 3 and 4, the sealed box chamber hoisting mechanism of the invention further comprises a rope loosening protection mechanism 3; the rope loosening protection mechanism 3 comprises a rope loosening guide wheel set, a first sensor 303 and a first induction plate; the first induction plate is arranged on the rope loosening guide wheel set; the rope releasing guide wheel set is arranged on the base 5 through an elastic component; when the bearing rope bypasses the rope releasing guide wheel set to bear the weight, the position of the first sensing plate changes along with the deformation of the elastic component, so that the first sensor 303 matched with the first sensing plate sends a stop signal. The first sensing plate is provided with a sensing component matched with the first sensor 303. The sensing component is the upwarp part of first tablet tip, can avoid the tablet rest to disturb first sensor 303 through upwarp part and the cooperation of first sensor 303 and produce the erroneous judgement. The raised portion may be curved in any other direction.

As shown in fig. 3, the slack rope guide pulley group includes a rear guide pulley group 302; the rear guide wheel set 302 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 base 5 through an elastic component so as to drive the first induction plate to change position along with the deformation of the elastic component; the load-bearing rope passes around the second axle to cause deformation of the resilient member when bearing load. The elastic component is shown in fig. 2 and comprises a guide rod 305 and a spring 304; the guide rod 305 is fixedly connected with the base 5, and the second mounting seat is mounted on the guide rod 305 through the spring 304. 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.

In addition, the rope loosening guide wheel set also comprises a front guide wheel set 301; the front guide wheel group 301 comprises a first wheel shaft and a first mounting seat; the first wheel shaft is arranged in a first mounting seat and can rotate freely, and the first mounting seat is arranged on the base 5. 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 leading sheave group 301 functions to adjust the direction of the load bearing line around the second wheel axle.

The bearing rope is connected with the lifting hook component 4 through the front guide wheel set and the rear guide wheel set of the rope loosening protection mechanism 3, under the action of lifting hook and self weight of the lifting appliance, the steel wire rope is stressed and tensioned, the rear guide wheel set 302 of the rope loosening protection mechanism 3 is pressed down by the steel wire rope, the first sensor contact (sensing part) on the guide wheel component is far away from the first sensor 303, when the lifting appliance puts down a heavy object on the loose steel wire rope, the first sensing plate on the front guide wheel set 301 is lifted up by the spring 304 on the guide rod 305, the sensor component sends a stop signal, the hoisting servo motor brakes and avoids the bearing rope from falling off due to over loosening.

Thereby slack rope protection mechanism 3 can prevent that the bearing rope is too not hard up to lead to wire rope on the hoist engine to break off the groove and jump the groove, has effectively ensured the security that the hoist promoted, prevents simultaneously that lower part lifting hook hoist from transferring too much and automatic and lifting device drops, pounces equipment itself or other near equipment.

As shown in fig. 5, the sealed box chamber hoisting mechanism of the present embodiment further includes an upper limit protection mechanism 2, which specifically includes a trigger component, a second sensor 206 and a second sensing plate 205; the trigger component is triggered when the spreader reaches the upper limit, and drives the second sensing plate 205 to move, so that the second sensor 206 matched with the second sensing plate 205 sends out a stop signal.

The trigger part comprises a mandril 201; the base 5 is provided with an upper limiting hole for mounting the ejector rod 201; one end of the ejector rod 201 extends out of the upper limiting hole to be matched with the lifting appliance, and the other end of the ejector rod is connected with the second induction plate 205; the top rod 201 can move in the upper limiting hole after being triggered by the lifting appliance to drive the second induction plate 205 to move. The top rod 201 can extend out of the upper limiting hole under the premise of self gravity, and when the lifting appliance exceeds a preset upper limiting position, the part of the top rod 201 extending out of the upper limiting hole is triggered, so that the top rod 201 is driven to move along the upper limiting hole to drive the second induction plate 205. When the lifting appliance is not more than the upper limit, the top rod 201 can extend out of the upper limit hole under the action of self gravity, and meanwhile, the second sensing plate 205 is driven by the top rod 201 to recover the working position so as to be matched with the second sensor 206.

In addition to the self gravity, the working position of the top rod 201 in this embodiment can also be restored by an elastic component, specifically, as shown in fig. 1, a pressing plate 203 is disposed at the upper limiting hole, a convex ring is disposed on the top rod 201, and an elastic component is disposed between the pressing plate 203 and the convex ring. The elastic member may be a spring 202 fitted over the stem 201.

The top rod 201 is hinged with a second induction plate 205, a support 204 is arranged on the base 5, and the second induction plate 205 is hinged on the support 204; the top rod 201 drives the second induction plate 205 to rotate around the support 204. The second induction plate 205 and the support 204 form a lever, and the moment arm between the support 204 and the top rod end is smaller than that between the support 204 and the other end of the second induction plate 205, so that the small position change of the induction part can be effectively amplified to form a stop signal.

The second sensing board 205 is provided with a sensing component which is matched with the second sensor 206. The sensing part is a raised part at the end of the second sensing board 205, and the raised part is matched with the second sensor 206, so that the situation that the rest part of the sensing board 5 interferes with the second sensor 206 to generate misjudgment can be avoided. The raised portion may be curved in any other direction.

In the hoisting process of the hoisted object, when the upper plane of the hanger contacts the ejector rod 201, the ejector rod 201 is jacked, the induction pipe contacts the sensor assembly, the sensor assembly sends out a stop model, the hoisting servo motor is braked, the hoisting machine is effectively prevented from rising to exceed the design limit value, the hoisted equipment is prevented from colliding with other mechanisms such as the hoisting machine, and the hoisting mechanism or equipment faults caused by the over-position of the hoisting machine are avoided.

The base is in a modular design, so that the hoisting mechanism is convenient to install, and the replacement efficiency under the fault condition is improved; adopt pair capstan winch to carry out wire rope serving, optimized the structure, reduced occupation space, satisfied the speed demand that the case hoist and mount from fast to slow, make the hoist and mount process more reliable and stable. The plurality of bearing ropes are simultaneously connected to different positions of the lifting hook assembly, so that the directional design of the lifting process is formed, the equipment is not rotated in the lifting process, and the operation difficulty of the lifting process is reduced; thereby slack rope protection mechanism can prevent that wire rope too not hard up leads to wire rope to take off the groove job hopping.

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. The utility model provides a sealed case room hoist mechanism which characterized in that: the device comprises a servo motor, a winch, a bearing rope and a lifting hook assembly; the bearing ropes are at least two and are respectively connected to different positions of the lifting hook component and wound on corresponding winches; the servo motor drives the winch to drive the bearing rope to be wound synchronously.

2. The hermetic chamber hoisting mechanism according to claim 1, wherein: the winch is a multi-connection winch provided with a plurality of groove bodies, and each bearing rope is wound on the corresponding groove body.

3. The hermetic chamber hoisting mechanism according to claim 1, wherein: the bag packaging device also comprises a base and a bag packaging device; the base is detachably installed at the top of the sealed box chamber, the servo motor and the winch are installed on the base, and the bag sealing device is arranged outside the base.

4. The hermetic chamber hoisting mechanism according to claim 3, wherein: the rope loosening protection mechanism is also included; the rope loosening protection mechanism comprises a rope loosening guide wheel set, a first sensor and a first induction plate; the first induction plate is arranged on the rope loosening guide wheel set; the rope loosening guide wheel group is arranged on the base through an elastic component; when the bearing rope bypasses the rope loosening guide wheel set to bear the weight, the first sensing plate changes in position along with the deformation of the elastic component, so that the first sensor matched with the first sensing plate sends a stop signal.

5. The hermetic chamber hoisting mechanism according to claim 4, wherein: 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 base through an elastic component so as to drive the first induction plate to generate position change 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.

6. The hermetic chamber hoisting mechanism according to claim 5, wherein: the rope loosening guide wheel group also comprises a front guide wheel group; the front guide wheel set comprises a first wheel shaft and a first mounting seat; the first wheel shaft is arranged in the first mounting seat and can rotate freely, and the first mounting seat is arranged 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 first 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 sequentially rounds the first wheel shaft, the third wheel shaft and the second wheel shaft to bear the weight.

7. The hermetic chamber hoisting mechanism according to claim 3, wherein: the device also comprises an upper limit protection mechanism, wherein the upper limit protection mechanism comprises a trigger part, a second sensor and a second induction plate; the triggering part is triggered when the lifting appliance reaches the upper limit, and drives the second sensing plate to move, so that the second sensor matched with the second sensing plate sends a stop signal.

8. The hermetic chamber hoist lift mechanism of claim 7 wherein the trigger member comprises a ram; the base is provided with an upper limiting hole for mounting the ejector rod; one end of the ejector rod extends out of the upper limiting hole to be matched with the lifting appliance, and the other end of the ejector rod is connected with the second induction plate; the ejector rod can move in the upper limiting hole after being triggered by the lifting appliance so as to drive the second induction plate to move.

9. The sealed box chamber hoisting mechanism of claim 8, wherein the upper limit hole is provided with a pressing plate, the top rod is provided with a convex ring, and an elastic part is arranged between the pressing plate and the convex ring.

10. The sealed box chamber hoisting mechanism of claim 8, wherein the top rod is hinged with a second induction plate, the base is provided with a support, and the second induction plate is hinged on the support; the ejector rod drives the second induction plate to rotate around the support.

11. The sealed box chamber hoisting mechanism of any one of claims 1 to 10, wherein: and the servo motor drives the winch to drive the bearing rope to be synchronously wound, and the variable frequency speed regulation is not started so that the hoisting process has speed change.