CN219603038U - I-shaped lifting appliance - Google Patents

Abstract

The utility model provides an I-shaped lifting appliance, and belongs to the technical field of lifting appliances; the lifting hook comprises an I-shaped frame, wherein the top of the I-shaped frame is fixedly connected with a connecting frame, two sides of the I-shaped frame are fixedly connected with a fixing frame, one side of the fixing frame is fixedly connected with a fixing plate, the lifting hook further comprises an adjusting assembly, the adjusting assembly is used for uniformly adjusting the length of a sling, and the lifting hook further comprises a lifting hook assembly, and the lifting hook assembly is used for connecting a hung object. According to the utility model, through the adjusting assembly, an operator can hold the telescopic handle to drive the gears to rotate when adjusting the length of the slings, so that the two slings have the same extending length, the effect of adjusting the lengths of the two slings on the same side according to the size of an object to be hung is achieved, the length of the slings is more accurate, the use is convenient, the hook on the crane is connected with the connecting frame, and the fixed frame and the fixed plate play a role in reinforcing the structural strength of the I-shaped frame, so that the I-shaped frame is beneficial to maintaining balance in the use process.

Description

I-shaped lifting appliance

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to an I-shaped lifting appliance.

Background

The I-shaped lifting appliance is widely applied in lifting engineering, can be used for keeping the balance of a lifted object, avoiding the damage of the lifting rope to the lifted object, shortening the height of the lifting rope, reducing the lifting height of the movable pulley, reducing the horizontal pressure born by the object during lifting, avoiding the damage to the lifted object, and can reasonably distribute or balance the load of each lifting point by adopting the I-shaped lifting appliance when lifting the object by multiple machines.

The existing I-shaped lifting appliance is characterized in that the lifting cable, the lifting hook and the I-shaped steel are directly welded on two sides of the I-shaped steel in a common mounting mode, the mounting mode is firm, the length of the lifting cable is fixed, the length of the lifting cable cannot be adjusted according to requirements, in the using process, the lifting hook is fast in abrasion due to the fact that friction exists between the lifting hook and an object to be lifted when the lifting hook is used for a long time, the lifting hook is welded and fixed with the lifting cable, replacement of the lifting hook is difficult, and the worn lifting hook can affect lifting of the object.

Disclosure of Invention

The utility model aims to solve the technical problems that the mounting mode of a sling, a lifting hook and I-shaped steel is generally that the sling is directly welded on two sides of the I-shaped steel when the existing I-shaped sling is used, the mounting mode is firm, the length of the sling is fixed, the length of the sling cannot be adjusted according to the requirement, in the using process, as the lifting hook is used for a long time, friction exists between the lifting hook and an object to be lifted, a lifting hook abrasion block is caused, the lifting hook is fixed with the sling in a welding mode, the replacement of the lifting hook is difficult, and the worn lifting hook can influence the lifting of the object.

In order to solve the technical problems, the utility model provides the following technical scheme:

the I-shaped lifting appliance comprises an I-shaped frame, wherein the top of the I-shaped frame is fixedly connected with a connecting frame, both sides of the I-shaped frame are fixedly connected with a fixing frame, and one side of the fixing frame is fixedly connected with a fixing plate; the sling also comprises an adjusting component, wherein the adjusting component is used for uniformly adjusting the length of the sling; the lifting hook assembly is used for connecting a hung object; the adjusting component comprises a pair of first fixed shafts which are rotationally connected to each fixed plate, each first fixed shaft is fixedly connected with a first rotating sleeve, a sling is sleeved on each first rotating sleeve, each first fixed shaft is fixedly connected with a gear, a pair of gears are meshed with each other, one side of each gear is fixedly connected with a fixed block, one side of each fixed block is fixedly connected with a telescopic handle, a clamping block is fixedly connected to the telescopic end of each telescopic handle, one side of each fixed plate is fixedly connected with a limiting rod, one side of each fixed plate is fixedly connected with a second fixed shaft, a second rotating sleeve is rotationally connected to the second fixed shaft, each sling is in butt joint with the inner wall of the second rotating sleeve, one end of each sling is fixedly connected with an upper connecting plate, four first connecting grooves are formed in the upper connecting plate, and one pair of positioning rods are fixedly connected to the bottom of the upper connecting plate.

Preferably, the adjusting component further comprises a supporting block fixedly connected to the top of the fixing frame, a first clamping groove is formed in the supporting block, the clamping block is connected with the inner wall of the first clamping groove in a clamping mode, a limiting block is rotatably connected to the supporting block, a second clamping groove is formed in the limiting block, the clamping block is connected with the inner wall of the second clamping groove in a clamping mode, a limiting hole is formed in the limiting block, and the inner wall of the limiting hole is connected with one end of the supporting block in a clamping mode.

Preferably, the lifting hook assembly comprises a lower connecting plate arranged at the bottom of the upper connecting plate, four second connecting grooves are formed in the lower connecting plate, a pair of positioning holes are formed in the lower connecting plate, the positioning rods are clamped with the positioning holes, a hook is fixedly connected to the bottom of the lower connecting plate, and a plurality of reinforcing ribs are arranged on the hook.

Preferably, the hook assembly further comprises a first positioning plate and a second positioning plate which are clamped with the inner wall of the first connecting groove and the inner wall of the second connecting groove, screw holes are formed in the first positioning plate and the second positioning plate, the first positioning plate and the second positioning plate are fixedly connected through screws, and the screws are arranged on the inner wall of the screw holes.

Preferably, the first positioning plate and the second positioning plate are both made of metal materials.

Preferably, the positioning rod is of a T-shaped structure, and one end of the positioning rod is of a hemispherical structure.

Preferably, the clamping block is in an arc-shaped structure.

Preferably, one end of the supporting block is in an arc-shaped structure.

Preferably, the sling is made of steel wire.

Compared with the prior art, the utility model has at least the following beneficial effects:

in the above-mentioned scheme, through the adjusting part who sets up, when using, the length of hoist cable needs to be adjusted, and the operator can hold telescopic handle, drives gear rotation for two hoist cables stretch out the length the same, reaches and adjusts the same effect of two hoist cable lengths of homonymy simultaneously according to the size of hung object, makes the length adjustment of hoist cable more accurate, convenient to use, and couple and link on the lifting machine are connected, set up and play the effect of strengthening I shape frame structural strength at mount and fixed plate, are of value to I shape frame and keep balance in the use.

Through the cooperation use of supporting shoe and stopper that sets up, after adjusting the length of hoist cable, pinch the one end of supporting shoe, make the one end of supporting shoe separate with the spacing hole of seting up on the stopper, remove the restriction to the stopper, rotate the stopper and open, rotate one side of supporting shoe with flexible handle, tensile flexible handle makes the fixture block and the first draw-in groove joint on the supporting shoe, reverse rotation stopper, pinch the one end of supporting shoe and make the one end of supporting shoe and spacing hole joint again, in the hoist process, can spacing flexible handle, thereby carry out spacingly to fixed block and gear, reach the purpose of spacing to first fixed axle and first rotation cover, avoid the hoist cable to receive the gravity effect of the object of being lifted when can drive first rotation cover, thereby the length of hoist cable keeps unchanged in the hoist process.

Through the couple that sets up, when using, with four couples with being hung the object looks articulates respectively, the strengthening rib that sets up can increase the couple with lift by crane the frictional force of object junction for the couple can not take place to slide in the use, and the strengthening rib has reduced the wearing and tearing degree of couple, in the couple use, just can be worn and torn by the couple after the strengthening rib wearing and tearing, has prolonged the life of couple.

Through the first locating plate and the second locating plate that set up, when the installation couple, place the bottom of upper junction plate with lower connecting plate for the locating hole aligns with the gag lever post, press down the connecting plate, thereby gag lever post and locating hole joint, realize spacing and the interim fixed to upper junction plate and lower connecting plate, then with first locating plate and second locating plate follow opposite direction joint second spread groove and the inner wall of first spread groove of seting up on lower junction plate and the upper junction plate respectively, use the screw to connect first locating plate and second locating plate, realize the installation to the couple, and in the lifting by crane the in-process, the couple atress also can not influence the stability degree that upper junction plate and lower connecting plate are connected, promoted the stability that the couple was used, when the couple wearing and tearing are serious, only need demolish the screw, take down first locating plate and second locating plate, the lower connecting plate makes the locating lever leave the locating hole, release the restriction to lower connecting plate, can change the couple, it is convenient to dismantle and install, only need change the couple and change the connecting plate when changing, waste of resources has been reduced to a certain extent.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

Fig. 1 is a schematic view of a first view perspective of an i-shaped sling;

fig. 2 is a schematic view of a second perspective three-dimensional structure of the i-shaped lifting appliance;

fig. 3 is a schematic diagram of a top view partial enlarged structure of an i-shaped lifting appliance;

FIG. 4 is a schematic perspective view of a hook assembly;

FIG. 5 is a schematic view of an assembled three-dimensional enlarged structure of a sling and an upper connecting plate;

FIG. 6 is a schematic view of an assembled three-dimensional enlarged structure of a first positioning plate and a second positioning plate;

FIG. 7 is an enlarged schematic view of FIG. 2A;

fig. 8 is an enlarged schematic view of the structure at B in fig. 2.

[ reference numerals ]

1. An I-shaped frame; 2. a connecting frame; 3. a fixing frame; 4. a fixing plate; 5. an adjustment assembly; 6. a hook assembly; 7. a first fixed shaft; 8. a first rotating sleeve; 9. a sling; 10. a gear; 11. a fixed block; 12. a telescoping handle; 13. a clamping block; 14. a support block; 15. a limiting block; 16. a limiting hole; 17. an upper connecting plate; 18. a first connection groove; 19. a positioning rod; 20. a lower connecting plate; 21. a second connecting groove; 22. positioning holes; 23. a hook; 24. reinforcing ribs; 25. a first positioning plate; 26. a second positioning plate; 27. a screw hole; 28. a screw; 29. a limit rod; 30. a second fixed shaft; 31. and a second rotating sleeve.

While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the utility model, this is for illustrative purposes only and is not intended to limit the utility model to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.

Detailed Description

The I-shaped lifting appliance provided by the utility model is described in detail below with reference to the accompanying drawings and specific embodiments. While the utility model has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the utility model specifically.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.

It will be understood that the meanings of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on" but also includes meaning "directly on" something with intervening features or layers therebetween, and "over … …" or "over … …" means not only "on" or "over" something, but also may include its meaning "on" or "over" something without intervening features or layers therebetween.

Furthermore, spatially relative terms such as "under …," "under …," "lower," "above …," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially related terms are intended to encompass different orientations in use or operation of the suspended object in addition to the orientation depicted in the figures. The suspended object may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.

As shown in fig. 1-8, the embodiment of the utility model provides an i-shaped lifting appliance, which comprises an i-shaped frame 1, wherein the top of the i-shaped frame 1 is fixedly connected with a connecting frame 2, both sides of the i-shaped frame 1 are fixedly connected with a fixing frame 3, and one side of the fixing frame 3 is fixedly connected with a fixing plate 4; the device also comprises an adjusting component 5, wherein the adjusting component 5 is used for uniformly adjusting the length of the sling 9; the lifting hook assembly 6 is used for connecting a hung object; the adjusting component 5 comprises a pair of first fixed shafts 7 which are rotationally connected to each fixed plate 4, each first fixed shaft 7 is fixedly connected with a first rotating sleeve 8, a sling 9 is sleeved on each first rotating sleeve 8, each first fixed shaft 7 is fixedly connected with a gear 10, the gears 10 are meshed with each other, one side of each gear 10 is fixedly connected with a fixed block 11, one side of each fixed block 11 is fixedly connected with a telescopic handle 12, the telescopic end of each telescopic handle 12 is fixedly connected with a clamping block 13, one side of each fixed plate 4 is fixedly connected with a limiting rod 29, one side of each fixed plate 4 is fixedly connected with a second fixed shaft 30, each second fixed shaft 30 is rotationally connected with a second rotating sleeve 31, each sling 9 is in butt joint with the inner wall of each second rotating sleeve 31, one end of each sling 9 is fixedly connected with an upper connecting plate 17, four first connecting grooves 18 are formed in each upper connecting plate 17, and the bottom of each upper connecting plate 17 is fixedly connected with a pair of positioning rods 19.

Through the adjusting part 5 that sets up, when using, the operator can hold telescopic handle 12, drives gear 10 and rotates for two slings 9 stretch out the length the same, reach and adjust the same effect of two slings 9 length of homonymy simultaneously according to the size of hung object, make the length adjustment of slings 9 more accurate, facilitate the use, couple and link 2 on the lifting machine are connected, set up and play the effect of strengthening I shape frame 1 structural strength at mount 3 and fixed plate 4, be of value to I shape frame 1 and keep balance in the use.

As an implementation manner in this embodiment, as shown in fig. 1-8, the adjusting component 5 further includes a supporting block 14 fixedly connected to the top of the fixing frame 3, a first clamping groove is provided on the supporting block 14, a clamping block 13 is clamped with an inner wall of the first clamping groove, a limiting block 15 is rotatably connected to the supporting block 14, a second clamping groove is provided on the limiting block 15, the clamping block 13 is clamped with an inner wall of the second clamping groove, a limiting hole 16 is provided on the limiting block 15, and an inner wall of the limiting hole 16 is clamped with one end of the supporting block 14.

Through the cooperation of supporting shoe 14 and stopper 15 that set up is used, after adjusting the length of hoist cable 9, pinch the one end of supporting shoe 14, make the one end of supporting shoe 14 and the spacing hole 16 that sets up on the stopper 15 separate, remove the restriction to stopper 15, rotate stopper 15 and open, rotate the flexible handle 12 to one side of supporting shoe 14, stretch flexible handle 12 and make the first draw-in groove joint on fixture block 13 and the supporting shoe 14, reverse rotation stopper 15, pinch the one end of supporting shoe 14 and make the one end of supporting shoe 14 and spacing hole 16 joint again, in the lifting process, can carry out spacingly to flexible handle 12, thereby carry out spacingly to fixed block 11 and gear 10, reach the purpose that carries out spacingly to first fixed axle 7 and first rotating sleeve 8, avoid hoist cable 9 to receive the heavy effect of the object that is lifted in the lifting process when can not drive first rotating sleeve 8, thereby the length of hoist cable 9 keeps invariable.

As an implementation manner in this embodiment, as shown in fig. 1 to 8, the hook assembly 6 includes a lower connecting plate 20 disposed at a bottom position of the upper connecting plate 17, four second connecting grooves 21 are formed in the lower connecting plate 20, a pair of positioning holes 22 are formed in the lower connecting plate 20, the positioning rod 19 is clamped with the positioning holes 22, a hook 23 is fixedly connected to a bottom of the lower connecting plate 20, and a plurality of reinforcing ribs 24 are disposed on the hook 23.

Through the couple 23 that sets up, when using, with four couples 23 with being hung the object looks articulatedly respectively, the strengthening rib 24 of setting can increase couple 23 and lift by crane the frictional force of object junction for couple 23 can not take place to slide in the use, and strengthening rib 24 has reduced the wearing and tearing degree of couple 23, in couple 23 use, strengthening rib 24 wearing and tearing back couple 23 just can be worn and torn, has prolonged couple 23 life.

As an implementation manner in this embodiment, as shown in fig. 1 to 8, the hook assembly 6 further includes a first positioning plate 25 and a second positioning plate 26 that are clamped with the inner walls of the first connecting slot 18 and the second connecting slot 21, screw holes 27 are formed in the first positioning plate 25 and the second positioning plate 26, the first positioning plate 25 and the second positioning plate 26 are fixedly connected through screws 28, and the screws 28 are disposed on the inner walls of the screw holes 27.

Through the first locating plate 25 and the second locating plate 26 that set up, when installing couple 23, place the bottom of upper junction plate 17 with lower connecting plate 20, make locating hole 22 and gag lever post 29 align, press down connecting plate 20, thereby gag lever post 29 and locating hole 22 joint, realize spacing and the interim fixed to upper junction plate 17 and lower connecting plate 20, then the second spread groove 21 and the inner wall of first spread groove 18 of seting up on connecting plate 20 and upper junction plate 17 are respectively blocked from opposite directions with first locating plate 25 and second locating plate 26, use screw 28 to connect first locating plate 25 and second locating plate 26, realize the installation to couple 23, and in the lifting by crane the in-process, couple 23 atress also can not influence the stability degree that upper junction plate 17 and lower junction plate 20 are connected, the stability that couple 23 used has been promoted, when couple 23 wearing and tearing seriously, only need demolish screw 28, take down first locating plate 25 and second locating plate 26, pull down connecting plate 20 makes locating rod 19 leave locating hole 22, remove the restriction to lower connecting plate 20, can be removed to couple 23 and change the waste of couple 23, the waste of change in the couple 23 and the change in the time of couple 23 is very simple, the change of couple 23 and the change of couple 23 is very easy, and the change in the change of couple 23 is required.

In this embodiment, as shown in fig. 6, the first positioning plate 25 and the second positioning plate 26 are made of metal, preferably stainless steel, and have certain corrosion resistance, higher hardness, and less deformation under stress, so as to ensure the stability of the hook 23 under stress.

In this embodiment, as shown in fig. 5, the positioning rod 19 has a T-shaped structure, and one end of the positioning rod 19 has a hemispherical structure, so that the positioning rod 19 is conveniently clamped with the positioning hole 22 when the lower connecting plate 20 is installed.

In this embodiment, as shown in fig. 7, the clamping block 13 is in an arc structure, so that the sling 9 is under the gravity action of the suspended object in the lifting process, the supporting block 14 and the limiting block 15 are matched with the clamping block 13 to better limit the first rotating sleeve 8, the length of the sling 9 in the lifting process is ensured to be unchanged, and the probability of safety accidents is reduced.

In this embodiment, as shown in fig. 7, one end of the supporting block 14 has an arc structure, so that the supporting block 14 is conveniently clamped with the limiting hole 16 formed on the limiting block 15.

In this embodiment, as shown in fig. 1, the sling 9 is made of steel wire, and the steel wire has the advantages of wear resistance, high temperature resistance, difficult fracture and the like, and is convenient to use.

According to the technical scheme provided by the utility model, through the arranged adjusting component, when the lifting rope is used, an operator can hold the telescopic handle to drive the gears to rotate, so that the two lifting ropes have the same extending length, the effect of adjusting the lengths of the two lifting ropes on the same side according to the size of an object to be lifted is achieved, the length adjustment of the lifting ropes is more accurate, the lifting machine is convenient to use, the hooks on the lifting machine are connected with the connecting frame, and the lifting machine and the fixing plate are arranged to play a role in reinforcing the structural strength of the I-shaped frame, so that the I-shaped frame is beneficial to keeping balance in the use process.

Through the cooperation use of supporting shoe and stopper that sets up, after adjusting the length of hoist cable, pinch the one end of supporting shoe, make the one end of supporting shoe separate with the spacing hole of seting up on the stopper, remove the restriction to the stopper, rotate the stopper and open, rotate one side of supporting shoe with flexible handle, tensile flexible handle makes the fixture block and the first draw-in groove joint on the supporting shoe, reverse rotation stopper, pinch the one end of supporting shoe and make the one end of supporting shoe and spacing hole joint again, in the hoist process, can spacing flexible handle, thereby carry out spacingly to fixed block and gear, reach the purpose of spacing to first fixed axle and first rotation cover, avoid the hoist cable to receive the gravity effect of the object of being lifted when can drive first rotation cover, thereby the length of hoist cable keeps unchanged in the hoist process.

Through the couple that sets up, when using, with four couples with being hung the object looks articulates respectively, the strengthening rib that sets up can increase the couple with lift by crane the frictional force of object junction for the couple can not take place to slide in the use, and the strengthening rib has reduced the wearing and tearing degree of couple, in the couple use, just can be worn and torn by the couple after the strengthening rib wearing and tearing, has prolonged the life of couple.

Through the first locating plate and the second locating plate that set up, when the installation couple, place the bottom of upper junction plate with lower connecting plate for the locating hole aligns with the gag lever post, press down the connecting plate, thereby gag lever post and locating hole joint, realize spacing and the interim fixed to upper junction plate and lower connecting plate, then with first locating plate and second locating plate follow opposite direction joint second spread groove and the inner wall of first spread groove of seting up on lower junction plate and the upper junction plate respectively, use the screw to connect first locating plate and second locating plate, realize the installation to the couple, and in the lifting by crane the in-process, the couple atress also can not influence the stability degree that upper junction plate and lower connecting plate are connected, promoted the stability that the couple was used, when the couple wearing and tearing are serious, only need demolish the screw, take down first locating plate and second locating plate, the lower connecting plate makes the locating lever leave the locating hole, release the restriction to lower connecting plate, can change the couple, it is convenient to dismantle and install, only need change the couple and change the connecting plate when changing, waste of resources has been reduced to a certain extent.

The utility model is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the utility model. In the following description of preferred embodiments of the utility model, specific details are set forth in order to provide a thorough understanding of the utility model, and the utility model will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present utility model.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in implementing the methods of the embodiments described above may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium, such as: ROM/RAM, magnetic disks, optical disks, etc.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (9)

1. An i-shaped spreader comprising: the connecting frame is fixedly connected to the top of the I-shaped frame, the fixing frames are fixedly connected to the two sides of the I-shaped frame, and the fixing plate is fixedly connected to one side of the fixing frame;

the sling also comprises an adjusting component, wherein the adjusting component is used for uniformly adjusting the length of the sling;

the lifting hook assembly is used for connecting a hung object;

the adjusting component comprises a pair of first fixed shafts which are rotationally connected to each fixed plate, each first fixed shaft is fixedly connected with a first rotating sleeve, a sling is sleeved on each first rotating sleeve, each first fixed shaft is fixedly connected with a gear, a pair of gears are meshed with each other, one side of each gear is fixedly connected with a fixed block, one side of each fixed block is fixedly connected with a telescopic handle, a clamping block is fixedly connected to the telescopic end of each telescopic handle, one side of each fixed plate is fixedly connected with a limiting rod, one side of each fixed plate is fixedly connected with a second fixed shaft, a second rotating sleeve is rotationally connected to the second fixed shaft, each sling is in butt joint with the inner wall of the second rotating sleeve, one end of each sling is fixedly connected with an upper connecting plate, four first connecting grooves are formed in the upper connecting plate, and one pair of positioning rods are fixedly connected to the bottom of the upper connecting plate.

2. The i-shaped lifting appliance according to claim 1, wherein the adjusting component further comprises a supporting block fixedly connected to the top of the fixing frame, a first clamping groove is formed in the supporting block, the clamping block is clamped with the inner wall of the first clamping groove, a limiting block is rotatably connected to the supporting block, a second clamping groove is formed in the limiting block, the clamping block is clamped with the inner wall of the second clamping groove, a limiting hole is formed in the limiting block, and the inner wall of the limiting hole is clamped with one end of the supporting block.

3. The i-shaped lifting appliance according to claim 2, wherein the lifting hook assembly comprises a lower connecting plate arranged at the bottom of the upper connecting plate, four second connecting grooves are formed in the lower connecting plate, a pair of positioning holes are formed in the lower connecting plate, the positioning rods are clamped with the positioning holes, a hook is fixedly connected to the bottom of the lower connecting plate, and a plurality of reinforcing ribs are arranged on the hook.

4. The i-shaped lifting appliance of claim 3, wherein the hook assembly further comprises a first positioning plate and a second positioning plate which are clamped with the inner walls of the first connecting groove and the second connecting groove, screw holes are formed in the first positioning plate and the second positioning plate, the first positioning plate and the second positioning plate are fixedly connected through screws, and the screws are arranged on the inner walls of the screw holes.

5. The i-shaped sling according to claim 4, wherein the first positioning plate and the second positioning plate are both made of metal.

6. The i-shaped sling according to claim 1, wherein the positioning rod has a T-shaped structure, and one end of the positioning rod has a hemispherical structure.

7. The i-shaped sling according to claim 1, wherein the clamping block is of an arc-shaped structure.

8. The i-shaped sling according to claim 2, wherein one end of the supporting block is in an arc-shaped structure.

9. The i-shaped sling according to claim 1, wherein the sling is made of steel wire.