CN218841433U

CN218841433U - Lifting appliance with self-adaptive lifting points

Info

Publication number: CN218841433U
Application number: CN202222888492.5U
Authority: CN
Inventors: 张红; 刘治; 吴梦莹; 余冰; 吴玉; 陈嘉杰; 张美玲; 赵阿朋
Original assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-11
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a hoisting point self-adaptive lifting appliance, which comprises a frame body, a hoisting unit arranged at the lower side of the frame body and used for connecting a hoisted object, and a link mechanism arranged at the upper side of the frame body; the connecting rod mechanism comprises a crank and a connecting rod, one end of the crank is hinged to the frame body, the other end, opposite to the crank, is hinged to one end of the connecting rod, and the other end, opposite to the connecting rod, of the connecting rod is arranged on the frame body and can horizontally move relative to the frame body; the joint of the crank and the connecting rod is provided with a lifting point which can move relative to the frame body along with the movement of the connecting rod. The utility model discloses a hoisting point self-adaptation hoist, under the horizontal migration of connecting rod, the adjustable change in position of the relative support body of hoisting point to adapt to the focus position of different hoist and mount thing. The posture of the vertical long-distance conveying device connected to the hoisting unit can be adjusted by changing the position of the hoisting point, and the working efficiency of hoisting and assembling the vertical long-distance conveying device is improved.

Description

Lifting appliance with self-adaptive lifting points

Technical Field

The utility model relates to a hoist especially relates to a hoisting point self-adaptation hoist.

Background

When emergency maintenance is carried out on the nuclear island in-service main equipment of the nuclear power station, fixing bolts, pins and the like on the equipment need to be disassembled and assembled and are influenced by the irradiation factors of the in-service equipment, and the whole maintenance process is carried out in shielding water. The maintenance equipment needs to be transported from the shore to the underwater working position by a vertical long-distance transportation device. The vertical long-distance conveying device is limited by factors of storage space, transportation space and working space of the nuclear island, and needs to be manufactured and stored in a segmented mode.

When each section of the assembled vertical long-distance conveying device is hoisted, the hoisting process is required to be stable, the postures of the sections of the vertical long-distance conveying device can be adjusted, and the vertical long-distance conveying device is convenient to butt and assemble. The conventional lifting appliance does not have the function of adjustable lifting points, if the lifting appliance for the vertical long-distance conveying device causes the gravity center deviation of the lifting points and the vertical long-distance conveying device, the vertical long-distance conveying device is difficult to maintain the vertical posture, and the splicing of all sections of the vertical long-distance conveying device is difficult, so that the problem that the lifting points and the gravity center deviation of a lifting object cause the lifting object to be difficult to keep the vertical posture due to the self-adaptive lifting point lifting appliance set is solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a hoisting point self-adaptation hoist.

The utility model provides a technical scheme that its technical problem adopted is: the lifting point self-adaptive lifting appliance comprises a frame body, a lifting unit arranged on the lower side of the frame body and used for connecting a lifting object, and a connecting rod mechanism arranged on the upper side of the frame body;

the connecting rod mechanism comprises a crank and a connecting rod, one end of the crank is hinged to the frame body, the other end of the crank opposite to the crank is hinged to one end of the connecting rod, and the other end of the connecting rod opposite to the connecting rod is arranged on the frame body and can horizontally move relative to the frame body;

and a lifting point which is movable relative to the frame body along with the movement of the connecting rod is arranged at the joint of the crank and the connecting rod.

Preferably, the link mechanism further comprises a guide rail arranged on the upper side of the frame body and a sliding block, and the other end of the link is in sliding fit with the guide rail through the sliding block.

Preferably, the lifting point self-adaptive lifting appliance further comprises a hydraulic cylinder and a hydraulic power station; the hydraulic cylinder is arranged on the upper side of the frame body and is connected with the other end of the connecting rod or the sliding block; the hydraulic power station is arranged on the lower side of the frame body, is connected with the hydraulic cylinder and provides power for the hydraulic cylinder.

Preferably, the hydraulic cylinder is arranged parallel to the guide rail, one end of the hydraulic cylinder, which is far away from the piston rod of the hydraulic cylinder, is connected with the other end of the connecting rod, which is opposite to the connecting rod, and the end of the piston rod of the hydraulic cylinder is connected with one end of the guide rail.

Preferably, one end of the guide rail extends outwards along the length direction of the guide rail to form a connecting part, and a piston rod end of the hydraulic cylinder is connected with the connecting part.

Preferably, the hoisting unit comprises a support connected to the lower side of the frame body and a hoisting matching part used for connecting with a hoisted object;

the hanging matching part is connected to the surface of the support and faces the central axis of the support body.

Preferably, the hanging matching part is inwards recessed vertically to form a clamping groove for inserting a connecting plate of a hanging object into the clamping groove.

Preferably, the connecting plate of the hoisting object is in inserted fit with the at least two clamping grooves.

Preferably, the hitch engagement portion is located directly below the linkage.

Preferably, a plurality of grid grooves are formed in the side surface of the frame body.

The utility model discloses a hoisting point self-adaptation hoist has following beneficial effect at least: under the horizontal movement of the connecting rod, the position of the lifting point relative to the frame body can be adjusted and changed so as to adapt to the gravity center positions of different hoisted objects. The posture of the vertical long-distance conveying device connected to the hoisting unit can be adjusted by changing the position of the hoisting point, and the working efficiency of hoisting and assembling the vertical long-distance conveying device is improved.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a lifting point self-adaptive hanger according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a change process of a lifting point at another view angle of the lifting point self-adaptive lifting appliance according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a first conveying unit of the vertical long-distance conveying apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the vertical long-distance conveying device according to an embodiment of the present invention after installation.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A component is said to be "disposed on" another component, which may be directly or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

The above terms are for convenience of description only and should not be construed as limiting the present technical solution.

Fig. 1-4 show a lifting point self-adaptive lifting appliance according to an embodiment of the present invention, please refer to fig. 1-2, which includes a frame body 1, a lifting unit 2 disposed at a lower side of the frame body 1 and used for connecting a lifting object, and a link mechanism 3 disposed at an upper side of the frame body 1;

the connecting rod mechanism 3 comprises a crank 31 and a connecting rod 32, one end of the crank 31 is hinged to the frame body 1, the other opposite end of the crank 31 is hinged to one end of the connecting rod 32, and the other opposite end of the connecting rod 32 is arranged on the frame body 1 and can horizontally move relative to the frame body 1. The connection between the crank 31 and the connecting rod 32 is provided with a hanging point which can move relative to the frame body 1 along with the movement of the connecting rod 32.

Specifically, the horizontal movement of the connecting rod 32 drives the crank 31 to rotate on the frame body 1. An included angle is formed between the crank 31 and the connecting rod 32, and when the connecting rod 32 moves horizontally along one side far away from the crank 31, the included angle between the crank 31 and the connecting rod is gradually increased; when the connecting rod 32 moves horizontally along the side close to the crank 31, the included angle between the two gradually decreases.

A lifting hole 4 can be arranged on the crank 31 or the connecting rod 32 near the hinged point between the crank and the connecting rod to be used as a lifting point connected with the lifting equipment. Therefore, under the horizontal movement of the connecting rod 32, the position of the lifting point relative to the frame body 1 can be adjusted and changed so as to adapt to the gravity center positions of different hoisted objects. When the lifting point is changed to be positioned on the same plumb line with the gravity center of the lifted object, the lifting point is the optimal lifting position. Whether the hoisting point is adjusted to a proper position can be judged by observing whether the posture of the hoisted object which is connected to the hoisting unit 2 and is static is vertical.

Referring to fig. 3-4 together, the sling may be a vertical long distance conveyor 5. The vertical long-distance transport device 5 needs to be mounted to one side of the lower internals 6 when in use. The vertical long-distance conveyance device 5 includes a first conveyance unit 50, a second conveyance unit 51, and a third conveyance unit 52. The three conveying units are sequentially spliced along the vertical direction.

Referring to fig. 3, the first conveying unit 50 is taken as an example and includes main bodies 501 extending vertically and disposed oppositely in parallel, and a connecting plate 502 connected between the main bodies 501 transversely. The vertical long-haul transport device 5 has a substantially ladder-like shape as a whole. Of the plurality of connection plates 502, the first connection plate 502 at the outermost side may be fittingly connected to the suspension unit 2.

The second conveyance unit 51 and the third conveyance unit 52 have substantially the same configuration as the first conveyance unit 50, but the three conveyance units and the combination body formed by joining the conveyance units do not have the same center of gravity position. For example, the pin sleeve 503 is arranged on the first conveying unit 50, the spherical hinge support 521 is arranged at the bottom of the third conveying unit, and the pin sleeve 503 and the spherical hinge support 521 are not arranged on the second conveying unit, so that the three conveying units have slight differences in structure, and the gravity center positions of the three conveying units are different, so that the positions of the lifting points need to be continuously adjusted according to the field conditions in the stage of hoisting and assembling the three conveying units, so that the conveying units or the combined body formed after the conveying units are assembled can keep a vertical posture, and the splicing work among the conveying units can be smoothly completed.

In some embodiments, the link mechanism 3 further comprises a guide rail 33 disposed on the upper side of the frame body 1, and a slider 34, wherein the opposite end of the link 32 is slidably fitted on the guide rail 33 through the slider 34, and can horizontally slide along the guide rail 33 to obtain a smooth horizontal movement support, and the position of the hanging point can be continuously changed along with the horizontal movement support, so as to be adjusted to a position corresponding to the structural center of gravity of the hoisted object.

In some embodiments, the adaptive lifting sling further comprises a hydraulic cylinder 7 and a hydraulic power station 8; the hydraulic cylinder 7 is arranged at the upper side of the frame body 1 and is connected with the other opposite end of the connecting rod 32 or the sliding block 34; the hydraulic power station 8 is arranged on the lower side of the frame body 1, is connected with the hydraulic cylinder 7 through a hydraulic pipe and provides power for the hydraulic cylinder 7.

In some embodiments, when the hoisted object is the vertical long-distance conveying device 5, the bearing capacity is enough to be used when the hydraulic power station 8 with the rated working pressure of 12Mpa is selected. Under the condition of the same bearing capacity, the volume of the hydraulic cylinder 7 required to be configured is smaller compared with that of the cylinder, and the hydraulic cylinder 7 has better stability when in operation. The hydraulic power station 8 and the hoisting unit 2 can be respectively arranged at two opposite sides of the frame body 1, so that the whole stress of the hoisting tool is balanced.

In some embodiments, the hydraulic cylinder 7 is arranged parallel to the guide rail 33, its end remote from its piston rod being connected to the opposite end of the connecting rod 32, and its piston rod end being connected to one end of the guide rail 33.

Further, one end of the guide rail 33 is formed with a connecting portion 330 extending outward in the length direction thereof, and the rod end of the hydraulic cylinder 7 is connected to the connecting portion 330. The opening and closing of the hydraulic cylinder 7 are controlled, the connecting rod 32 can be controlled to move back and forth along the guide rail 33 and can be stopped at any position in the stroke range, and therefore the proper position of the hoisting point can be adjusted.

In some embodiments, the hoist unit 2 includes a support 21 connected to the lower side of the frame body 1, a hoist fitting 22 for connecting with a hoist; the suspension fitting portion 22 is coupled to a surface of the support 21 and is disposed toward a central axis of the frame body 1.

The support 21 may be generally rectangular and the attachment 22 may be generally hook-shaped or of other shapes depending on the shape of the portion to which the sling is attached. The hooking engagement portion 22 is coupled to a surface of the support 21 facing the inside of the frame body 1. The positions of the hanging matching part 22 and the support 21 on the lower side of the frame body 1 can be properly adjusted, so that when the hanging object is matched with the hanging matching part 22, the hanging object is closer to the middle position relative to the frame body 1, and the whole stress of the hanger is more balanced.

Further, the hanging fitting part 22 is vertically recessed to form a clamping groove 220 into which the connecting plate 502 of the hanging object is inserted. When the hoisted object is the vertical long-distance conveying device 5, in order to match the connecting plate 502, the clamping groove 220 corresponding to the connecting plate 502 can be arranged on the hoisting matching part 22, and the connecting plate 502 is matched with the clamping groove 220, so that the hoisting matching part 22 can be fixed to smoothly complete subsequent hoisting operation.

Further, in order to obtain more stable clamping fixation of the connection plate 502 on the hanging and connecting matching part 22, the connection plate 502 of the hanging object is in inserting fit with at least two clamping grooves 220.

Further, the hitch engagement portion 22 is located directly below the link mechanism 3.

Specifically, the hanging matching part 22 and the link mechanism 3 are respectively located on the lower side and the upper side of the frame body 1, and the two parts can be correspondingly arranged, and the hanging matching part 22 is arranged under the link mechanism 3, so that the whole stress of the lifting appliance is balanced, and the lifting point can be conveniently adjusted.

Taking the embodiment shown in fig. 1-2 as an example, the frame body 1 has a long rectangular shape with long sides and short sides. The crank 31, the connecting rod 32, and the like may be installed at the midpoint of the frame body 1 in the short side direction, and the entire length direction thereof may be aligned with the long side direction of the frame body 1. Correspondingly, two clamping grooves 220 of the hanging and connecting matching part 22 arranged on the lower side can be parallel to two long edges of the frame body 1 and arranged right below the two long edges, so that the stress of the whole lifting appliance structure is balanced, and the position of a lifting point can be conveniently adjusted.

In some embodiments, in order to reduce the weight of the frame body 1 and make the structure thereof lighter, a plurality of grooves 10 are formed on the side surface of the frame body 1.

In some embodiments, when the adaptive lifting appliance of the lifting point according to some embodiments of the present invention is applied to the lifting operation of the vertical long-distance conveying device 5, the specific operation process is as follows:

the clip groove 220 of the suspending engagement portion 22 is inserted into the connecting plate 502 of the first conveying unit 50, and the first conveying unit 50 is turned from the horizontal posture to the vertical posture. Observing the inclined state of the first conveying unit 50 in the air, adjusting the piston of the hydraulic cylinder 7 to extend or retract, and enabling the first conveying unit 50 to be in a vertical posture.

The first conveying unit 50 is hoisted to the mounting assembly 9 at one side of the lower internals 6, and the hoisting engagement part 22 is separated from the connecting plate 502. And hoisting the second conveying unit 51, observing the inclined state of the second conveying unit 51 in the air, adjusting the piston of the hydraulic cylinder 7 to extend or retract, lifting the second conveying unit 51 to be right above the first conveying unit 50 after the second conveying unit 51 is in the vertical posture, and finishing the alignment and connection operation of the first conveying unit 50 and the second conveying unit 51.

And lifting the combined body consisting of the second conveying unit 51 and the first conveying unit 50, observing the inclined state of the combined body in the air, adjusting the piston of the hydraulic cylinder 7 to extend or retract so that the combined body is in a vertical posture, moving one end distance downwards, then arranging the combined body at the mounting assembly 9 on one side of the lower in-pile member 6, and separating the hanging and connecting matching part 22 from the connecting plate 502.

And hoisting the third conveying unit 52 to the position right above the assembly, and finishing the alignment and connection operation of the second conveying unit 51 and the third conveying unit 52. At this time, the installation of the vertical long-distance conveyor 5 is completed.

The above is only some embodiments of the present invention, and not limiting the scope of the present invention, and all the equivalent structures or equivalent processes made by the contents of the specification and the attached drawings are utilized, or directly or indirectly applied to other related technical fields, and all the same are included in the scope of the present invention.

Claims

1. The lifting point self-adaptive lifting appliance is characterized by comprising a frame body (1), a lifting unit (2) arranged on the lower side of the frame body (1) and used for connecting a lifting object, and a connecting rod mechanism (3) arranged on the upper side of the frame body (1);

the connecting rod mechanism (3) comprises a crank (31) and a connecting rod (32), one end of the crank (31) is hinged to the frame body (1), the other opposite end of the crank (31) is hinged to one end of the connecting rod (32), and the other opposite end of the connecting rod (32) is arranged on the frame body (1) and can horizontally move relative to the frame body (1);

the connecting part of the crank (31) and the connecting rod (32) is provided with a lifting point which can move relative to the frame body (1) along with the movement of the connecting rod (32).

2. The lifting point adaptive lifting appliance according to claim 1, wherein the linkage mechanism (3) further comprises a guide rail (33) disposed on the upper side of the frame body (1), and a slider (34), and the opposite end of the linkage (32) is slidably fitted on the guide rail (33) through the slider (34).

3. The lifting point adaptive spreader according to claim 2, further comprising a hydraulic cylinder (7) and a hydraulic power station (8); the hydraulic cylinder (7) is arranged on the upper side of the frame body (1) and is connected with the other opposite end of the connecting rod (32) or the sliding block (34); the hydraulic power station (8) is arranged on the lower side of the frame body (1) and connected with the hydraulic cylinder (7) and supplies power to the hydraulic cylinder (7).

4. The lifting point self-adapting lifting appliance according to claim 3, wherein the hydraulic cylinder (7) is arranged parallel to the guide rail (33), and one end of the hydraulic cylinder remote from the piston rod thereof is connected with the opposite end of the connecting rod (32), and the piston rod end thereof is connected with one end of the guide rail (33).

5. The lifting point self-adaptive lifting appliance according to claim 4, wherein one end of the guide rail (33) extends outwards along the length direction thereof to form a connecting part (330), and the piston rod end of the hydraulic cylinder (7) is connected with the connecting part (330).

6. The hanging point adaptive lifting appliance according to any one of claims 1-5, characterized in that the lifting unit (2) comprises a support (21) connected to the underside of the frame body (1), a lifting fitting (22) for connection with a lifting object;

the hanging matching part (22) is connected to the surface of the support (21) and faces the central axis of the frame body (1).

7. The hoisting point self-adaptive hanger according to claim 6, wherein the hanging connection fitting part (22) is vertically recessed to form a clamping groove (220) for a connecting plate of a hanging object to be inserted into.

8. The hoisting point self-adaptive hanger according to claim 7, wherein the connecting plate of the hanger is in plug-in fit with at least two of the snap grooves (220).

9. The lifting point self-adapting lifting appliance according to claim 6, wherein the lifting engagement part (22) is located directly below the linkage mechanism (3).

10. The lifting point self-adaptive lifting appliance according to any one of claims 1 to 5, wherein a plurality of grid grooves (10) are formed in the side surface of the frame body (1).