CN117842835A - Lifting appliance, lifting device and adjusting method - Google Patents

Abstract

The application discloses a lifting appliance, a lifting device and an adjusting method, and belongs to the technical field of lifting equipment. The lifting appliance comprises a lifting beam, a plurality of first connecting pieces, a lifting plate, at least two main lifting slings and at least one secondary lifting sling. The plurality of first connecting pieces are sequentially arranged along the length direction of the hanging beam and are used for being connected with different parts of the hung object, so that the hung object is uniformly stressed everywhere, and deformation of the hung object in the hanging process is reduced. The hanger plate is used for being connected with hoisting mechanism of hoisting accessory, and main hoist cable and secondary hoist cable all are connected in hoist beam and hanger plate, when hanger plate and hoisting mechanism are connected and are lifted by crane, main hoist cable bear the hoist cable or main hoist cable with secondary hoist cable bear jointly the hoist beam.

Description

Lifting appliance, lifting device and adjusting method

Technical Field

The application belongs to the technical field of hoisting equipment, and particularly relates to a lifting appliance, a lifting device and an adjusting method.

Background

A rocket is an aircraft that is propelled forward by reaction forces generated by the injection of working substances (working mediums) by a rocket engine. The vehicle carries all propellants, does not depend on external working media to generate thrust, can fly in dense atmosphere, can fly outside the dense atmosphere, and is a carrier for realizing aerospace flight.

The rocket made of nonmetallic materials has no metal shell, has weak rigidity, is easy to bend and deform when being lifted by adopting the existing lifting tool, and causes damage.

Disclosure of Invention

The technical problem that a rocket of a nonmetallic material is easy to bend and deform in a lifting manner in the related art can be solved to a certain extent at least. For this reason, this application provides a hoist and hoisting accessory.

In a first aspect, an embodiment of the present application provides a lifting appliance, including:

the lifting beam is connected with a lifted object, and the plurality of first connecting pieces are sequentially arranged along the length direction of the lifting beam;

the lifting plate is used for being connected with a lifting mechanism of the lifting device;

the main slings and the secondary slings are connected to the hanging beam and the hanging plate, the main slings and the secondary slings are connected to the hanging beam at intervals along the length direction of the hanging beam, and the secondary slings are positioned among the main slings; the main sling bears the hanging beam or the main sling and the secondary sling bear the hanging beam together under the condition that the hanging plate is connected with the lifting mechanism; the length of the secondary sling is adjustable so as to control the deformation of the hanging beam under the condition that the primary sling and the secondary sling bear the hanging beam together.

In some embodiments, the secondary slings are detachably connected to the hanger plate and/or the secondary slings are detachably connected to the hanger beam.

In some embodiments, the spreader is provided with two primary slings and two secondary slings, the two secondary slings being located between the two primary slings.

In some embodiments, the secondary sling comprises an adjusting member, a tension sensor process member and a first connecting member which are connected in sequence, wherein the tension sensor process member is detachably connected with the adjusting member and the first connecting member; one of the adjusting member and the first connecting member is connected to the secondary sling, and the other is connected to the hanger beam.

In some embodiments, the primary sling is adjustable in length and conforms to the configuration of the secondary sling.

In some embodiments, the spreader further comprises an auxiliary sling connected to the hanger beam and the hanger plate; under the condition that the lifting plate is connected with the lifting mechanism, the auxiliary sling is in an unstressed state.

In some embodiments, the hanging beam comprises a hanging beam body and a plurality of connecting frames sequentially arranged along the length direction of the body, the hanging beam body is fixedly connected with the connecting frames, and the main sling and the secondary sling are fixedly connected with the connecting frames; the first connecting piece is connected with the connecting frame, so that a fixing cavity for fixing the hung object is formed by surrounding the connecting frame.

In some embodiments, the connecting frame comprises a connecting frame body and two groups of connecting components, wherein the two groups of connecting components are respectively positioned at two sides of the body along the width direction of the hanging beam; the hanging beam body is fixedly connected with the connecting frame body, and the main sling and the secondary sling are fixedly connected with the connecting frame body;

the connecting assembly comprises a threaded pull rod, a hook and a nut, one side of the threaded pull rod is rotationally connected with the connecting frame body, one side of the hook is sleeved on the threaded pull rod, the nut is in threaded connection with the threaded pull rod, and the hook is positioned on the threaded pull rod under the action of the nut; the two sides of the length direction of the connecting frame are hung on the hooks.

In some embodiments, the spreader further comprises a fixed weight fixedly connected to the hanging beam and an adjusting weight detachably connected to the hanging beam to level the spreader in an unloaded state.

In a second aspect, an embodiment of the present application provides a lifting device, including a lifting mechanism and the lifting appliance provided in the first aspect, a lifting plate of the lifting appliance is connected with the lifting mechanism of the lifting device.

In a third aspect, an embodiment of the present application further provides a method for adjusting a lifting appliance provided in the first aspect or a lifting device provided in the second aspect, including the following steps:

s100, connecting a hoisted object model with a plurality of first connecting pieces;

s200, horizontally hoisting a suspended object model through the main sling;

and S300, adjusting the length of the secondary sling so that the secondary sling and the main sling bear the suspended object model together, and enabling the deformation of the hanging beam to be in a required range.

The invention has at least the following beneficial effects:

the lifting appliance comprises a lifting beam, a plurality of first connecting pieces, a lifting plate, at least two main lifting slings and at least one secondary lifting sling. The plurality of first connecting pieces are sequentially arranged along the length direction of the hanging beam and are used for being connected with different parts of the hung object, so that the hung object is uniformly stressed everywhere, and deformation of the hung object in the hanging process is reduced. The hanger plate is used for being connected with hoisting mechanism of hoisting accessory, and main hoist cable and secondary hoist cable all are connected in hoist beam and hanger plate, when hanger plate and hoisting mechanism are connected and are lifted by crane, main hoist cable bear the hoist cable or main hoist cable with secondary hoist cable bear jointly the hoist beam. In this application, the length of secondary hoist cable is adjustable, when the hoist beam hoist and mount by the main hoist cable, the bending deformation volume of hoist beam is great, can influence by the hoist object, alright through the length of adjusting the secondary hoist cable, the atress of secondary hoist cable is adjusted, and then adjust the distribution of hoist beam length direction everywhere power, and then adjust the deflection of hoist beam, so that the deflection of hoist beam is in the scope of requirement when hoist and mount, and then the high accuracy of each first connecting piece has been guaranteed, so that each first connecting piece is by the hoist object application effort, with the messenger by hoist object everywhere even atress, and then avoided hoist beam to warp and cause the damage to the hoist object, the protection is by hoist object non-deformable or deflection is little in the hoist process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates a schematic diagram of a spreader in one or more embodiments of the present application;

FIG. 2 shows a left side view of FIG. 1;

FIG. 3 shows an enlarged view at A in FIG. 2

FIG. 4 shows a schematic structural view of a secondary sling of the spreader in one or more embodiments of the present application;

FIG. 5 shows a top view of FIG. 4;

FIG. 6 illustrates a schematic structural view of a link body of a spreader in one or more embodiments of the present application;

fig. 7 shows a schematic structural view of a first connector of a spreader in one or more embodiments of the present application.

Reference numerals: 100-lifting appliance, 110-lifting beam, 111-lifting beam body, 112-connecting frame, 1121-connecting frame body, 1122-connecting component, 11221-screw pull rod, 11222-hook, 11223-nut, 120-first connecting piece, 130-lifting plate, 140-main sling, 150-secondary sling, 151-adjusting piece, 152-tension sensor craft, 153-second connecting piece, 160-auxiliary sling, 200-suspended object.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all the directional indicators in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

A rocket is an aircraft that is propelled forward by reaction forces generated by the injection of working substances (working mediums) by a rocket engine. The vehicle carries all propellants, does not depend on external working media to generate thrust, can fly in dense atmosphere, can fly outside the dense atmosphere, and is a carrier for realizing aerospace flight.

The traditional lifting appliance is mainly a lifting appliance for lifting at two points, the length of a beam body is longer, and the deformation of the beam body is larger only under the influence of the gravity of the beam body; after the traditional lifting appliance is fully loaded and lifted, the deformation of the beam body is larger, and then the deviation of the height position of a connecting piece connected with the lifted object can be caused, so that the lifted object is stressed unevenly everywhere, and when the rigidity of the lifted object is poor, the lifted object is easy to bend and deform, and the lifted object is damaged.

The rocket made of the nonmetallic material has no metal shell and weak rigidity, when the rocket is hoisted by adopting a traditional hoisting tool, the rocket made of the nonmetallic material can be influenced by the bending deformation of the beam body to generate the bending deformation, and the heat-proof layer of the rocket can be damaged to cause loss.

Therefore, in the related art, the rocket hoisting of the nonmetallic material has the technical problem of easy bending deformation. The embodiment of the application provides a lifting appliance, a lifting device and an adjusting method, which at least can solve the technical problem that a rocket of a nonmetallic material is easy to bend and deform in lifting.

The present application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

first, the embodiment of the present application provides a lifting appliance 100, where the deformation of the lifting appliance 100 provided in the embodiment of the present application is small, and the deformation of the lifted object 200 can be reduced.

As shown in fig. 1, the spreader 100 includes a hanger beam 110, a plurality of first links 120, a hanger plate 130, at least two primary slings 140, and at least one secondary sling 150.

The first connectors 120 are used for connecting the suspended objects 200, and a plurality of first connectors 120 are sequentially arranged along the length direction of the hanging beam 110. The plurality of first connecting pieces 120 are sequentially arranged along the length direction of the hanging beam 110 to be connected with each part of the length direction of the hung object 200, so that the tensile force borne by the hung object 200 is uniformly distributed everywhere, and the single part of the hung object 200 is prevented from being stressed intensively, so that the deformation amount of the hung object 200 is reduced.

The hanger plate 130 is used for being connected with a lifting mechanism of a lifting device, the main sling 140 and the secondary sling 150 are connected to the hanging beam 110 and the hanger plate 130, so that the lifting device can lift the hanger plate 130, and then the main sling 140 and the secondary sling 150 are pulled, so that the hanging beam 110 is lifted, and then the object 200 to be lifted is lifted.

Along the length direction of the hanging beam 110, the main sling 140 and the secondary sling 150 are connected to the hanging beam 110 at intervals, and the length of the secondary sling 150 is adjustable. The main sling 140 and the secondary sling 150 are connected to the hanging beam 110 at intervals, so that the tension of the main sling 140 and the secondary sling 150 to the hanging beam 110 can be uniformly distributed at all positions along the length direction of the hanging beam 110, the concentrated stress deformation of a single position on the hanging beam 110 is avoided, and the balance of the hanging beam 110 is also facilitated.

When the hanger plate 130 is connected to a hoisting mechanism for hoisting, the main slings 140 bear the hanging beam 110 or the main slings 140 bear the hanging beam 110 together with the secondary slings 150. Because the length of the secondary sling 150 is adjustable, when the suspended beam 110 is used for suspending the suspended object 200 through the main sling 140, the suspended object 200 is subjected to stress bending deformation and is influenced, the stress of the secondary sling 150 can be adjusted by adjusting the length of the secondary sling 150, so that the force distribution of each position in the length direction of the suspended beam 110 is adjusted, and the deformation of the suspended beam 110 is adjusted, so that the deformation of the suspended beam 110 is in a required range during suspending, the height precision of each first connecting piece 120 is ensured, each first connecting piece 120 applies a force to the suspended object 200, the suspended object 200 is uniformly stressed, the damage to the suspended object 200 caused by the deformation of the suspended beam 110 is avoided, the suspended object 200 is prevented from being deformed or deformed slightly in the suspending process, and the suspended object 200 and the suspended beam 110 are lifted under the common bearing of the main sling 140 and the secondary sling 150. When the suspended beam 110 is used for suspending the suspended object 200 by the main suspension cable 140, the stress bending deformation does not affect the suspended object 200, or is used for suspending the suspended object 200 with better rigidity, in order to facilitate suspending, the suspending rate is increased, and the length of the secondary suspension cable 150 can be prolonged, or the connection between the secondary suspension cable 150 and the suspended beam 110 is disconnected, or the connection between the secondary suspension cable 150 and the suspension board 130 is disconnected, so that the suspended beam 110 and the suspended object 200 are suspended only under the action of the main suspension cable 140, and the secondary suspension cable 150 is in a loose state at this time.

In some embodiments, the secondary slings 150 are detachably connected to the hanger plate 130 and/or the secondary slings 150 are detachably connected to the hanger beam 110. That is, the secondary suspension cable 150 is simultaneously detachably connected to the suspension board 130 and the suspension beam 110; or the secondary sling 150 is detachably connected with the hanger plate 130 and is non-detachably connected with the hanging beam 110; or the secondary slings 150 are non-detachably connected to the hanger plate 130 and are detachably connected to the hanger beam 110. After such design, when the suspended beam 110 is used for suspending the suspended object 200 through the main suspending cable 140, and the stressed bending deformation does not affect the suspended object 200, or is used for suspending the suspended object 200 with better rigidity, the secondary suspending cable 150 can be directly disconnected, so that the secondary suspending cable 150 is not connected with the suspended beam 110 and the suspending board 130, thereby being beneficial to improving the suspending efficiency.

In some embodiments, the secondary slings 150 are detachably connected to the hanger plate 130 by shackle.

In some embodiments, the hanger 100 is provided with two main slings 140 and two secondary slings 150, the two main slings 140 being connected to the two sides of the hanger beam 110 in the length direction, and the two secondary slings 150 being located between the two main slings 140, as shown in fig. 1. The design of the two main slings 140 ensures that the lifting beam 110 can be horizontally lifted under the action of the two main slings 140 under the condition that the secondary slings 150 are not stressed when being loosened, so that the balance of the lifting beam 110 during lifting is ensured; the design of the two secondary slings 150 adjusts the middle region of the hanging beam 110, avoids the middle region of the hanging beam 110 from sinking, and controls the deformation of the middle region of the hanging beam 110. Such quantity sets up, under the circumstances that guarantee hoist 100 can steadily lift by crane thing 200, hanging beam 110 warp less, has simplified the structure of hoist 100, helps the processing of this application hoist 100, helps reducing the processing cost of hoist 100 simultaneously.

In some embodiments, as shown in fig. 4 and 5, the secondary sling 150 includes a connection adjusting member 151, a tension sensor process member 152, and a second connection member 153, where the tension sensor process member 152 is detachably connected to both the adjusting member 151 and the first connection member 120; one of the adjusting member 151 and the first connecting member 120 is connected to the secondary suspension cable 150, and the other is connected to the suspension beam 110. As shown in fig. 4, the left end of the pull sensor craft 152 is an adjusting member 151, and the length of the adjusting member 151 can be adjusted, so that the overall length of the secondary sling 150 can be adjusted.

The type of the adjusting member 151 is various, such as a basket bolt, and is not limited in this application. In some embodiments, as shown in fig. 5, the adjustment member 151 includes a first adjustment rod 1511, a connection sleeve 1512, and a second adjustment rod 1513 that are sequentially threaded. Specifically, one end of the first adjusting rod 1511, which is close to the connecting sleeve 1512, extends into the connecting sleeve 1512 and is in threaded connection with the connecting sleeve 1512; one end of the second adjusting rod 1513, which is close to the connecting sleeve 1512, extends into the connecting sleeve 1512 and is in threaded connection with the connecting sleeve 1512.

In some embodiments, a first nut 1514 is further screwed on the side of the first adjusting rod 1511 near the connecting sleeve 1512, and a second nut 1515 is further screwed on the side of the second adjusting rod 1514 near the connecting sleeve 1512; after the first adjusting rod 1511 is adjusted, the first nut 1514 is screwed down to limit the first adjusting rod 1511; after the second adjusting rod 1514 is adjusted, the second nut 1515 is screwed down to limit the second adjusting rod 1514; the length of the secondary slings 150, i.e., the length of the fixed secondary slings 150, is cured by the simultaneous locking action of the first nut 1514 and the second nut 1515.

The tension sensor process 152 is detachably connected to the adjusting member 151 and also detachably connected to the second connecting member 153, so that the tension sensor process 152 can be detached. When the length of the secondary sling 150 is adjusted and the like and the tension of the secondary sling 150 needs to be measured, the tension sensor craft 152 can be disassembled, and then the tension sensor is arranged at the position of the tension sensor craft 152, so that the tension is measured; when the tension sensor is lifted, the tension sensor is detached, and then the tension sensor process piece 152 is installed to connect the adjusting piece 151 and the second connecting piece 153. That is, the tension sensor process 152 acts as a placeholder that helps to place the tension sensor in the event that the tension of the secondary sling 150 is not to be measured, and to remove and replace the tension sensor when the tension of the secondary sling 150 is to be measured. By means of the structural design, the tension of the lifting appliance 100 is conveniently measured, the length of the lifting appliance 100 slings 150 is conveniently adjusted, and meanwhile, the lifting appliance 100 is conveniently used.

The structure and material of the tension sensor process 152 are various, and the tension sensor process is not limited in this application, and may be a metal plate, a wire rope, or the like, as long as the tension sensor process can occupy a space. As shown in fig. 4, in some embodiments, the tension sensor process 152 is a waist-shaped plate with through holes on both sides in the length direction. It should be noted that the length of the tension sensor process 152 is identical to the length of the tension sensor, so as to ensure that the length of the sling 150 is not changed after the tension sensor is replaced by the tension sensor process 152.

In some embodiments, the primary slings 140 are adjustable in length and conform to the structure of the secondary slings 150. Referring to fig. 4 and 5, the main sling 140 includes an adjusting member 151, a tension sensor process member 152, and a second connecting member 153 connected in sequence, wherein the tension sensor process member 152 is detachably connected with the adjusting member 151 and the first connecting member 120; one of the adjusting member 151 and the first connecting member 120 is connected to the main suspension wire 140, and the other is connected to the suspension beam 110. The structure of the main sling 140 is described with reference to the structure of the secondary sling 150, and will not be described herein.

The length of the main sling 140 is adjustable, so that when the lifting appliance 100 lifts the lifted objects 200 with different centroids, the centroids of the lifting appliance 100 can be adjusted by adjusting the length of the main sling 140, so that the centroids of the lifting appliance 100 are suitable for lifting the lifted objects 200 with different centroids, and the lifting appliance 100 can lift a plurality of different lifted objects 200 and can be used under various working conditions.

In some embodiments, the spreader 100 further includes an auxiliary sling 160, the auxiliary sling 160 being connected to the hanger beam 110 and hanger plate 130; with the hanger plate 130 connected to the lifting mechanism, the auxiliary slings 160 are in an unstressed condition. Under normal hoisting conditions, the auxiliary slings 160 are in a loose and unstressed state, and when a hoisting accident occurs, for example, the main slings 140 or the secondary slings 150 are broken, the auxiliary slings 160 are in a stressed state, and the auxiliary slings are stressed in an auxiliary manner to provide tension for the hoisting beam 110, so that the damage of the accident can be reduced to a certain extent, and the hoisting safety can be ensured.

The specific connection location of the auxiliary sling 160 to the suspension member 110 is not limited in this application, and in some embodiments, the auxiliary sling 160 is connected to the left side of the suspension member 110 as shown in fig. 1.

In some embodiments, as shown in fig. 1 and 2, the hanging beam 110 includes a hanging beam body 111 and a plurality of connection frames 112 sequentially arranged along the length direction of the body, the hanging beam body 111 is fixedly connected with the connection frames 112, and the main sling 140 is fixedly connected with the connection frames 112; the first connecting piece 120 is connected with the connecting frame 112, and forms a fixing cavity 100a for fixing the suspended object 200 with the connecting frame 112. As shown in fig. 1, in some embodiments, five connection brackets 112, one auxiliary sling 160, two main slings 140, and two secondary slings 150 are provided, which are respectively secured to the five connection brackets 112. After such design, need not to offer connection structure such as connecting hole, coupling hook on hanging beam body 111, help reducing hanging beam body 111's processing degree of difficulty, help guaranteeing hanging beam 110 self rigidity simultaneously, and then guarantee the hoisting performance of hoist 100, alleviate hanging beam body 110's deformation volume to a certain extent.

The shape of the fixing cavity 100a is not limited in this application, and the shape of the fixing cavity is related to the cross section of the suspended object, for example, in some embodiments, the rocket is suspended by using the hanger 100 of this application, the cross section of the rocket is circular, and the cross section of the fixing cavity 100a is also circular so as to be matched with the shape of the rocket.

In some embodiments, as shown in fig. 2, after each sling is connected to the connecting frame 112, the sling and the connecting frame 112 form a mounting cavity 100b for mounting the hanging beam body 111, and the hanging beam body 111 is located in the mounting cavity 100 b. In some embodiments, as further shown in fig. 2, the cross-section of the hanging beam body 111 is rectangular, and the cross-section of the mounting cavity 100b is also rectangular. The limiting cavity 100b can help limit the hanging beam body 111, and is helpful for ensuring firm connection between the hanging beam body 111 and the connecting frame 112.

In some embodiments, as shown in fig. 6, a plurality of through holes are formed in the side wall of the connection frame 112 near the installation cavity 100b, and the hanging beam body 111 and the connection frame 112 are fixedly connected by a connection member such as a bolt penetrating the through holes.

In some embodiments, as shown in fig. 2 and 3, the connection frame 112 includes a connection frame body 1121 and two sets of connection assemblies 1122, where the two sets of connection assemblies 1122 are respectively located on two sides of the body along the width direction of the hanging beam body 111; the hanging beam body 111 is fixedly connected with the connecting frame body 1121, and the main sling 140 and the secondary sling 150 are fixedly connected with the connecting frame body 1121. The connection assembly 1122 includes a threaded pull rod 11221, a hook 11222, and a nut 11223; one side of the threaded pull rod 11221 is rotatably connected with the connecting frame body 1121; nut 11223 is threadably coupled to threaded draw rod 11221; one side of the hook 11222 is sleeved on the threaded pull rod 11221, and under the action of the nut 11223, the hook 11222 is positioned on the threaded pull rod 11221; the two sides of the first connecting member 120 in the length direction are respectively hung on hooks 11222 of the two groups of connecting components 1122.

After such design, the position of the hook 11222 can be adjusted by rotating the nut 11223, so that the size of the fixing cavity 100a can be adjusted, and the lifting tool 100 can lift the lifted objects 200 with different specifications. Meanwhile, after the design is adopted, the first connecting piece 120 is tightly attached to the hung object 200 in a manner of screwing the nut 11223 or applying torque to the nut 11223, so that the effect of fixing the hung object 200 is enhanced. The threaded draw bar 11221 is rotatably coupled to the connector body 1121 such that the connector assembly 1122 as a whole may be rotated to allow the first connector 120 to more closely engage the suspended object 200 throughout.

In some embodiments, the first connecting member 120 is a stainless steel strip, and a felt is adhered to a side of the connecting frame 112 near the connecting frame to protect the suspended object 200 from abrasion of the suspended object 200 by the stainless steel strip. As shown in fig. 7, through holes are provided at both sides in the length direction of the stainless steel strip to be hung on the hooks 11222. In some embodiments, as shown in FIG. 3, two nuts 11223 are provided on the connection assembly 1122 to prevent loosening of the nuts 11223.

In some embodiments, the lifting appliance 100 further includes a fixed weight fixedly connected to the lifting beam 110 and an adjusting weight (not shown) detachably connected to the lifting beam 110 so that the lifting appliance 100 is horizontal in an unloaded state. The fixed counterweight is used for balancing the theoretical no-load balance of the lifting beam 110 of the lifting appliance 100, and the detachable counterweight is used for meeting the requirements of fine adjustment of the no-load balance of the lifting appliance 100 under different horizontal lifting angles and different lengths of the main lifting rope 140 and the secondary lifting rope 150. When the lifting appliance 100 is unbalanced in an unloaded state, and the lifting appliance 100 falls on the upper portion of a rocket, one end of the lifting appliance 100 is contacted with the rocket, and the other end of the lifting appliance 100 is far away from the rocket and is not contacted with the rocket, so that the self weight of the lifting appliance 100 presses a fireproof layer on the outer surface of the rocket, and the balance of the lifting appliance 100 under the unloaded state is required to be ensured, so that the whole section of the lifting beam 110 is contacted with the rocket at the same time during lifting. In some embodiments, the fixed weight is provided in one piece and the adjustable weight is provided in four pieces within the hanging beam 110.

The following describes a method for using the lifting appliance 100 of the present application, taking the lifting appliance 100 shown in fig. 1 as an example to lift a nonmetallic rocket: the lifting plate 130 is connected with a lifting mechanism of a lifting device, then the lifting appliance 100 is lifted, and the lifting appliance 100 lifts under the combined action of the main sling 140 and the secondary sling 150; then controlling the lifting device to move the lifting device 100, and dropping the lifting device 100 on the rocket; then the first connecting piece 120 passes through the lower end of the rocket, and two ends of the first connecting piece 120 in the length direction are respectively hung on the hooks 11222 of the connecting frame 112; then tightening the nut 11223 by means of torque so that the first connecting piece 120 is in close contact with the rocket surface, and the lifting appliance 100 and the rocket are wrapped and fixed into a whole; finally, by controlling the lifting device to lift the lifting appliance 100, the rocket can be lifted horizontally under the combined action of the main sling 140 and the secondary sling 150, so that the rocket is ensured not to bend and deform in the lifting process, and the heat-resistant layer of the rocket is prevented from being damaged.

In summary, the inventive spreader 100 includes a hanger beam 110, a plurality of first connectors 120, a hanger plate 130, at least two primary slings 140, and at least one secondary sling 150. The plurality of first connecting pieces 120 are sequentially arranged along the length direction of the hanging beam 110 and are used for being connected with different parts of the hung object 200, so that the hung object 200 is uniformly stressed everywhere, and deformation of the hung object 200 in the hanging process is reduced. The hanger plate 130 is used for being connected with a lifting mechanism of a lifting device, the main sling 140 and the secondary sling 150 are connected to the hanging beam 110 and the hanger plate 130, and when the hanger plate 130 is connected with the lifting mechanism for lifting, the main sling 140 bears the hanging beam 110 or the main sling 140 and the secondary sling 150 bear the hanging beam 110 together. Because the length of the secondary sling 150 is adjustable, when the suspended beam 110 is used for suspending the suspended object 200 through the main sling 140, the suspended object 200 is subjected to stress bending deformation and is influenced, the stress of the secondary sling 150 can be adjusted by adjusting the length of the secondary sling 150, so that the force distribution of each position in the length direction of the suspended beam 110 is adjusted, and the deformation of the suspended beam 110 is adjusted, so that the deformation of the suspended beam 110 is in a required range during suspending, the height precision of each first connecting piece 120 is ensured, each first connecting piece 120 applies a force to the suspended object 200, the suspended object 200 is uniformly stressed, the damage to the suspended object 200 caused by the deformation of the suspended beam 110 is avoided, the suspended object 200 is prevented from being deformed or deformed slightly in the suspending process, and the suspended object 200 and the suspended beam 110 are lifted under the common bearing of the main sling 140 and the secondary sling 150. When the suspended beam 110 is used for suspending the suspended object 200 by the main suspension cable 140, the stress bending deformation does not affect the suspended object 200, or is used for suspending the suspended object 200 with better rigidity, in order to facilitate suspending, the suspending rate is increased, and the length of the secondary suspension cable 150 can be prolonged, or the connection between the secondary suspension cable 150 and the suspended beam 110 is disconnected, or the connection between the secondary suspension cable 150 and the suspension board 130 is disconnected, so that the suspended beam and the suspended object 200 are suspended only under the action of the main suspension cable 140, and the secondary suspension cable 150 is in a loose state at this time.

Based on the same inventive concept, the embodiment of the present application also provides a lifting device, which includes a lifting mechanism and the lifting appliance 100 provided in the present application, where the lifting plate 130 of the lifting appliance 100 is connected with the lifting mechanism of the lifting device. The lifting mechanism acts to drive the lifting plate 130 to act, so that the lifting appliance 100 ascends and descends, and the lifting of the lifted object 200 is realized. Since the lifting device has the lifting appliance 100 provided by the application, the lifting appliance has all the beneficial effects of the lifting appliance 100 of the application naturally, and the description is omitted here.

The type of hoisting device may be an automobile crane, a tower crane, a door crane, etc., and is not limited in this application. The hoisting device generally comprises a hoisting mechanism, an operating mechanism, an amplitude changing mechanism, a slewing mechanism and a metal structure. The lifting mechanism is a basic working mechanism of the lifting device and mainly comprises a suspension system, a winch and a lifting weight through a hydraulic system. The running mechanism is used for vertically and horizontally moving the heavy objects or adjusting the working position of the lifting device and generally consists of a motor, a speed reducer, a brake and wheels. The amplitude variation mechanism is only arranged on the arm type lifting device, the amplitude variation is reduced when the arm support is lifted, and the amplitude variation is increased when the arm support is lowered, and the amplitude variation mechanism is divided into balanced amplitude variation and unbalanced amplitude variation. The slewing mechanism consists of a driving device and a slewing bearing device of the slewing arm support. The metal structure is a framework of a lifting device, and main stress components such as a bridge, a lifting arm, a portal frame and the like can be of a box-shaped structure or a truss structure, can also be of a web member structure, and can be used as a supporting beam. The hoisting device is various in type and structure, and the specific structure is not limited in the application.

Based on the same inventive concept, the embodiments of the present application also provide a method for adjusting a lifting appliance 100, which is used for adjusting the lifting appliance 100 or the lifting device provided above, the method comprising the steps of:

first, the object model is connected to the first connector 120. In order to prevent the suspended object 200 from being damaged during the adjustment process, a suspended object model is used when adjusting the spreader 100. The appearance, weight, mass center and the like of the suspended object model are the same as those of the suspended object model, and the suspended object model can be made of cheaper materials.

Next, the object model is horizontally lifted by the main slings 140. That is, the secondary sling 150 is in a relaxed state and is not loaded.

Next, the length of the secondary slings 150 is adjusted so that the secondary slings 150 and the primary slings 140 together carry the suspended object model so that the amount of deformation of the suspended beam 110 is within the required range. Specifically, the length of the secondary suspension wire 150 is adjusted to be short so that the secondary suspension wire 150 also applies a force to the suspension member 110 until the deformation amount of the suspension member 110 satisfies the required range. So far, the adjustment is completed, and the adjusted lifting tool 100 can lift the lifted object 200.

In order to facilitate understanding of the adjustment method of the present application, the following description will be given by way of example of a case where the suspended object 200 is a rocket made of a nonmetallic material, the suspended object model is a training rocket, and the length of the main suspension cable 140 is adjustable: the weight, mass center, shape and the like of the scouring rocket are the same as those of a rocket made of non-metal materials, but the scouring rocket is provided with a metal shell, has good self rigidity and is generally made of metal materials. First, the scouring rocket is connected to each first connector 120; then, the rocket is hoisted and practised by the two main slings 140; then, the lengths of the two main slings 140 are adjusted so that the rocket is horizontal; then detecting the deformation of five points on the hanging beam 110 at intervals along the length direction in an infrared deformation detection mode; then fine tuning the secondary slings 150 so that the deformations of the five points on the lifting beam 110 both meet the requirements within 5 mm; recording force values of the tension sensors on the main sling 140 and the secondary sling 150 after meeting the requirements, and locking the lengths of the main sling 140 and the secondary sling 150; finally, the tension sensors on the primary slings 140 and the secondary slings 150 are removed and replaced with corresponding tension sensor craftwork 152. So far, the lifting appliance 100 is adjusted, and the nonmetallic material rocket can be lifted by using the lifting appliance 100.

In the adjustment process, when the deformation meets the required range, the length of each secondary sling 150 and the length of the main sling 140 and the stress condition of each tension sensor on the secondary sling can be recorded, so that the length of the sling 100 can be checked and revised in the future. After recording, the relationship between the deformation of the hanging beam 110 and the length parameter of the steel wire rope is not required to be fuzzed again in the later period, so that the workload of adjusting the length of each sling of the lifting appliance 100 is reduced.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A spreader, comprising:

the lifting beam (110) and a plurality of first connecting pieces (120), wherein the first connecting pieces (120) are used for connecting a lifted object (200), and the plurality of first connecting pieces (120) are sequentially arranged along the length direction of the lifting beam (110);

a hanger plate (130) for connecting with a lifting mechanism of the lifting device;

at least two main slings (140) and at least one secondary sling (150), wherein the main slings (140) and the secondary slings (150) are connected to the hanging beam (110) and the hanging plate (130), and the main slings (140) and the secondary slings (150) are connected to the hanging beam (110) at intervals along the length direction of the hanging beam (110); -said primary slings (140) carrying said lifting beams (110) or said primary slings (140) carrying said lifting beams (110) together with said secondary slings (150) under the condition that said lifting plate (130) is connected to said lifting mechanism; the secondary slings (150) are adjustable in length to control the amount of deformation of the hanger beam (110) in the event that the primary slings (140) and the secondary slings (150) together bear the hanger beam (110).

2. The spreader of claim 1, wherein the secondary slings (150) are detachably connected to the hanger plate (130) and/or the secondary slings (150) are detachably connected to the hanger beam (110).

3. The lifting appliance according to claim 1, wherein the lifting appliance (100) is provided with two main lifting slings (140) and two secondary lifting slings (150), the two main lifting slings (140) are connected to both sides of the lifting beam (110) in the length direction, and the two secondary lifting slings (150) are located between the two main lifting slings (140).

4. The spreader of claim 1, wherein the secondary sling (150) comprises an adjusting member (151), a tension sensor process member (152) and a second connecting member (153) connected in sequence, the tension sensor process member (152) being detachably connected to both the adjusting member (151) and the second connecting member (153); one of the adjusting member (151) and the second connecting member (153) is connected to the hanger plate (130), and the other is connected to the hanger beam (110).

5. The spreader of claim 4, wherein the primary slings (140) are adjustable in length and conform to the configuration of the secondary slings (150).

6. The spreader of any one of claims 1-5, wherein the spreader (100) further comprises an auxiliary sling (160), the auxiliary sling (160) being connected to the lifting beam (110) and the lifting plate (130); the auxiliary sling (160) is in an unstressed state under the condition that the lifting plate (130) is connected with the lifting mechanism.

7. The spreader of any one of claims 1-5, wherein the lifting beam (110) comprises a lifting beam body (111) and a plurality of connecting frames (112) sequentially arranged along the length direction of the lifting beam body (111), the lifting beam body (111) is fixedly connected with the connecting frames (112), and the main sling (140) and the secondary sling (150) are fixedly connected with the connecting frames (112); the first connecting piece (120) is connected with the connecting frame (112) and surrounds the connecting frame (112) to form a fixing cavity (100 a) for fixing the suspended object (200).

8. The spreader of claim 7, wherein the connection frame (112) comprises a connection frame body (1121) and two sets of connection assemblies (1122), the two sets of connection assemblies (1122) being located on both sides of the connection frame body (1121) in the width direction of the hanging beam body (111), respectively; the hanging beam body (111) is fixedly connected with the connecting frame body (1121), and the main sling (140) and the secondary sling (150) are fixedly connected with the connecting frame body (1121);

the connecting assembly (1122) comprises a threaded pull rod (11221), a hook (11222) and a nut (11223); one side of the threaded pull rod (11221) is rotationally connected with the connecting frame body (1121); the nut (11223) is in threaded connection with the threaded pull rod (11221); one side of the hook (11222) is sleeved on the threaded pull rod (11221), and under the action of the nut (11223), the hook (11222) is positioned on the threaded pull rod (11221); both sides of the first connecting piece (120) in the length direction are respectively hung on hooks (11222) of two groups of connecting components (1122).

9. A lifting device, characterized by comprising a lifting mechanism and a lifting appliance (100) according to any one of claims 1-8, a lifting plate (130) of the lifting appliance (100) being connected to the lifting mechanism of the lifting device.

10. A method of adjusting a spreader according to any one of claims 1-8, for adjusting a spreader (100) or a lifting device according to claim 9, comprising the steps of:

s100, connecting the hoisted object model with a plurality of first connecting pieces (120);

s200, horizontally lifting the suspended object model through the main sling (140);

s300, adjusting the length of the secondary sling (150) so that the secondary sling (150) and the main sling (140) bear the suspended object model together, and enabling the deformation of the hanging beam (110) to be in a required range.