CN218931440U

CN218931440U - Hoisting rigging

Info

Publication number: CN218931440U
Application number: CN202223422955.5U
Authority: CN
Inventors: 陆铭; 宋臣龙; 何旭; 夏少勇
Original assignee: Ross Wuxi Equipment Co ltd
Current assignee: Ross Wuxi Equipment Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-04-28
Anticipated expiration: 2032-12-20

Abstract

The utility model relates to a hoisting rigging, which comprises a hoisting plate, wherein a hoisting through hole is formed in a hoisting part of the hoisting plate, a first extension part and a second extension part are arranged at one side of the hoisting part at intervals, a movable cavity is formed between the first extension part and the second extension part, a first tooth-shaped structure is arranged on the side wall of the first extension part positioned in the movable cavity, the lower part of the movable cavity is open, the hoisting rigging further comprises a subsidiary plate, one end of the subsidiary plate is positioned in the movable cavity, the other end of the subsidiary plate passes through the lower part of the movable cavity and is positioned outside the hoisting plate and is provided with a hoisting ring assembly, one side of the subsidiary plate is provided with a second tooth-shaped structure, the first tooth-shaped structure and the second tooth-shaped structure are mutually jointed, a limiting part is arranged on the second extension part, and the end part of the limiting part is matched with the other side of the subsidiary plate to jack the subsidiary plate in the movable cavity. Therefore, the lifting device is combined with a hanging chain or a hanging belt, so that the total length of the rigging is convenient to adjust, the rigging is suitable for lifting operation, the adjustment of the space stable state of a workpiece is also convenient, the specification number of the hanging chain or the hanging belt is reduced, and the management and purchasing cost is reduced.

Description

Hoisting rigging

Technical Field

The utility model relates to the technical field of hoisting tools, in particular to a hoisting rigging.

Background

The existing hoisting rigging is various in variety, and the hoisting method is also various. At present, the lifting operation of workpieces generally adopts a hanging chain or a hanging belt, and meanwhile, due to the fact that when the specification of the workpieces to be lifted changes, the proper hanging chain or hanging belt needs to be replaced, the length of a lifting rigging is suitable for the lifting operation, time is wasted, the lifting operation of batch workpieces is not suitable for multiple times of adjustment, and the management cost and the purchasing cost are increased due to the fact that the hanging chain or hanging belt with various length specifications is also used.

In order to ensure the hoisting safety, the gravity center is required to be kept stable during the hoisting of the workpiece, and particularly, the requirement on the space stability state of the workpiece is higher when the hoisting device is applied to the working condition of assembly operation, otherwise, the installation operation efficiency is low or hoisting accidents are caused. In order to meet the requirement that a hanging chain or a hanging belt with proper length is required to be selected when a workpiece is hoisted, so that the gravity center is stable when the workpiece is hoisted, but the matched hanging chain or hanging belt is difficult to find, and inconvenience is brought to the adjustment of the space stable state of the workpiece.

Disclosure of Invention

The applicant provides a lifting rigging aiming at the defects in the prior art, so as to be used in combination with a hanging chain or a hanging belt, be convenient for adjusting the total length of the rigging to be suitable for lifting operation, be convenient for adjusting the space stable state of a workpiece, reduce the specification number of the hanging chain or the hanging belt, and reduce the management and purchasing cost.

The technical scheme adopted by the utility model is as follows:

the utility model provides a hoist and mount rigging, includes the hanger plate, the hanger plate includes the portion of lifting by crane, be provided with the hoist and mount through-hole on the portion of lifting by crane, lifting by crane portion one side interval is provided with first extension and second extension, forms the movable chamber between first extension and the second extension, and the first extension lateral wall that is located the movable intracavity portion is provided with first profile of tooth structure, and movable chamber lower part opening still includes the subplate, subplate one end is located the movable intracavity portion, the subplate other end passes movable chamber lower part opening and is located the hanger plate outside and install rings subassembly, and one side of subplate is provided with the second profile of tooth structure, first profile of tooth structure and second profile of tooth structure interengage, install the locating part on the second extension, the tip of locating part and the opposite side cooperation of subplate are with the subplate tightly in the movable intracavity of subplate top.

As a further improvement of the above technical scheme:

the front side and the rear side of the movable cavity are communicated, a clamping plate assembly is arranged on the lifting plate, and the clamping plate assembly has the structure that: the two ends of the first limiting plate are respectively connected with the side surfaces of the first extending part and the second extending part, the two ends of the second limiting plate are respectively connected with the other side surfaces of the first extending part and the second extending part, and the first limiting plate and the second limiting plate are matched with the auxiliary plate at the same time.

And the first extending part and the second extending part are respectively provided with a fastening component, and the fastening components penetrate through the first limiting plate and the second limiting plate simultaneously to lock the first limiting plate and the second limiting plate on the hanger plate.

The limiting piece is a screw, the end part of the screw penetrates through the second extending part and then is positioned in the movable cavity and matched with the auxiliary plate, and the threaded part of the screw is in threaded connection with the second extending part.

The limiting piece is a quick locking bolt, the end part of the quick locking bolt penetrates through the second extending part, is located in the movable cavity and is matched with the auxiliary plate, and the clamping part of the quick locking bolt is matched with the second extending part.

The limiting piece has the structure that: comprises a rotating seat hinged with the second extension part and a movable pin arranged on the rotating seat;

the rotary seat comprises a guide cavity of a shell structure, and a spring is arranged in the guide cavity;

the movable pin comprises a movable rod, one end of the movable rod is a handheld part, the handheld part is positioned outside the guide cavity, the other end of the movable rod is a limiting part, the limiting part penetrates through the center of a spring inside the guide cavity and stretches out of the guide cavity, the auxiliary plate and the second extending part are matched with the limiting part at the same time, one end of the spring is connected with the guide cavity, the other end of the spring is connected with a baffle arranged in the middle of the movable rod, and the spring is in a compressed state.

The second extension part is provided with a bolt, one side of the guide cavity is provided with a connecting part, and the connecting part is hinged with the bolt;

the guide cavity is provided with a first through hole and a second through hole which are matched with the movable rod at the same time.

The end part of the auxiliary plate positioned outside the movable cavity is provided with a threaded hole;

the structure of rings subassembly is: the lifting ring structure is mounted at the end part of the screw.

A handle is arranged on one side of the screw rod.

The lifting ring structure comprises a U-shaped ring body, connecting rings are arranged at two ends of the U-shaped ring body, a circular boss is arranged at the end part of the screw rod, and the circular boss is matched with the end face of the connecting ring after the screw rod passes through a central hole in the middle of the connecting ring.

The beneficial effects of the utility model are as follows:

the utility model has compact and reasonable structure and convenient operation, and the relative positions of the hanger plate and the auxiliary plate are convenient and fast to adjust by the structure of the mutual joint of the first tooth-shaped structure and the second tooth-shaped structure and the limit structure of the limit part, so that the total length of the rigging is convenient to adjust, the rigging is suitable for hoisting operation, the adjustment of the space stable state of a workpiece is also convenient, the specification number of a hanging chain or a hanging belt is reduced, and the management and purchasing cost is reduced.

The utility model also has the following advantages:

(1) The first limiting plate and the second limiting plate are arranged on the first extending part and the second extending part and used for blocking the auxiliary plate from being separated from the movable cavity which is penetrated from front to back.

(2) The lifting ring assembly is connected with the auxiliary plate through the matching structure of the screw rod and the threaded hole, when the space state requirement of the workpiece is higher, the screw rod can be rotated after the workpiece is lifted, the matching length of the adjusting screw rod and the threaded hole is adjusted, the total length of the rigging is accurately adjusted, and then the space three-dimensional state of the workpiece is accurately adjusted, so that the lifting requirement is met.

Drawings

Fig. 1 is a schematic structural diagram of the present utility model (embodiment one).

Fig. 2 is an exploded view of the present utility model.

Fig. 3 is a schematic structural view of the hanger plate of the present utility model.

Fig. 4 is a schematic structural view of the sub-panel of the present utility model.

Fig. 5 is a schematic structural diagram of the present utility model (embodiment two).

Fig. 6 is a schematic structural diagram of the present utility model (embodiment three).

Fig. 7 is a rear view of the present utility model (embodiment three).

Fig. 8 is a schematic diagram of a fitting structure of the limiting member, the auxiliary plate and the second extension portion according to the present utility model (third embodiment).

Fig. 9 is a schematic structural diagram of a rotating seat according to the present utility model (embodiment three).

Fig. 10 is a state diagram of the stopper when the sub-plate is pressed tightly (third embodiment).

Fig. 11 is a state diagram (third embodiment) of the present utility model when the sub-plate is disengaged from the stopper.

FIG. 12 is a schematic view of the structure of the screw according to the present utility model (fourth embodiment).

Fig. 13 is a schematic structural view of a suspension ring structure according to the present utility model (fourth embodiment).

Fig. 14 is an application scenario diagram of the present utility model.

Wherein: 1. a hanger plate; 10. a movable cavity; 11. a hoisting part; 1101. hoisting the through hole; 12. a first extension; 1201. a first tooth structure; 13. a second extension;

2. a sub-plate; 21. a second tooth structure; 22. a threaded hole;

3. a cleat assembly; 301. a first limiting plate; 302. a fastening assembly; 303. a second limiting plate;

4. a limiting piece; 41. a movable pin; 4101. a limit part; 4102. a baffle; 4103. a movable rod; 4104. a hand-held part;

42. a rotating seat; 4201. a guide chamber; 4202. a connection part; 4203. a first through hole; 4204. a second through hole; 43. a spring; 44. a bolt;

5. a lifting ring assembly; 51. a screw; 5101. a circular boss; 5102. a handle;

52. a hanging ring structure; 5201. a connecting ring; 5202. a U-shaped ring body; 5203. a central bore;

6. a lifting hook; 7. a hanging point; 8. a workpiece; 91. a first sling; 92. and a second sling.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

As shown in fig. 1-2, the lifting rigging of the first embodiment includes a lifting plate 1, the lifting plate 1 includes a lifting portion 11, a lifting through hole 1101 is provided on the lifting portion 11, a first extension portion 12 and a second extension portion 13 are provided on one side of the lifting portion 11 at intervals, a movable cavity 10 is formed between the first extension portion 12 and the second extension portion 13, a first tooth-shaped structure 1201 is provided on a side wall of the first extension portion 12 located inside the movable cavity 10, a lower portion of the movable cavity 10 is opened, the lifting rigging further includes a sub-plate 2, one end of the sub-plate 2 is located inside the movable cavity 10, the other end of the sub-plate 2 passes through the lower opening of the movable cavity 10 and is located outside the lifting plate 1 and is provided with a lifting ring assembly 5, one side of the sub-plate 2 is provided with a second tooth-shaped structure 21, the first tooth-shaped structure 1201 and the second tooth-shaped structure 21 are engaged with each other, a limiting member 4 is mounted on the second extension portion 13, and an end of the limiting member 4 cooperates with the other side of the sub-plate 2 to jack the sub-plate 2 in the movable cavity 10.

As shown in fig. 14, during the hoisting operation, the hoisting through hole 1101 is hung on the hook 6 of the crane, and the hoisting ring assembly 5 is connected to the hoisting point 7 of the workpiece 8 through a hoisting rope. The length L of the hook 6 to the suspension point 7 is the total length of the rig, and the suspension cable may be a hoist chain or a sling.

The structure of the first tooth-shaped structure 1201 and the second tooth-shaped structure 21, which are mutually engaged, is a connection structure in which a plurality of teeth are mutually matched, and the load is mainly distributed on the teeth-to-teeth mutually matched structure during lifting. The tooth shape is preferably rectangular, the bearing is large, and in addition, the tooth shape can also be triangular teeth or arc teeth and the like.

The number of the limiting pieces 4 can be one or more, the auxiliary plate 2 is limited to move in the movable cavity 10 through the end parts of the limiting pieces 4, and the relative positions of the hanging plate 1 and the auxiliary plate 2 are fixed by combining the connecting structures of the first tooth-shaped structures 1201 and the second tooth-shaped structures 21.

When the matching relation between the auxiliary plate 2 and the limiting piece 4 is released, the position of the auxiliary plate 2 in the movable cavity 10 is changed, so that the distance between the lifting through hole 1101 and the lifting ring assembly 5 is changed. The plurality of teeth are matched with the teeth, so that the distance adjustment precision is high, and the device is suitable for adjusting the total length of the rigging when the space of the workpiece is stable.

Through the structure of first tooth form structure 1201 and second tooth form structure 21 interengagement to and the limit structure of locating part 4, make the relative position of hanger plate 1 and subplate 2 adjust conveniently, the rigging total length of being convenient for is adjusted and is made its be suitable for the hoist and mount operation, also is convenient for the regulation of work piece space steady state, reduces the specification quantity of hanging chain or suspender, reduces management and purchase cost.

As shown in fig. 1 to 3, the front and rear sides of the movable cavity 10 are penetrated, the hanger plate 1 is provided with a clamping plate assembly 3, and the clamping plate assembly 3 has the following structure: the two ends of the first limiting plate 301 are respectively connected with the side surfaces of the first extending part 12 and the second extending part 13, the two ends of the second limiting plate 303 are respectively connected with the other side surfaces of the first extending part 12 and the second extending part 13, and the first limiting plate 301 and the second limiting plate 303 are simultaneously matched with the auxiliary plate 2. The first extension portion 12 and the second extension portion 13 are welded to the first limiting plate 301 and the second limiting plate 303, or may be detachably and fixedly connected.

The first extension part 12 and the second extension part 13 are provided with the first limiting plate 301 and the second limiting plate 303, which are used for blocking the auxiliary plate 2 from being separated from the movable cavity 10 which is penetrated from front to back, and the structure is convenient for processing the hanging plate 1 and reduces the cost.

As shown in fig. 1 to 3, the first extension portion 12 and the second extension portion 13 are each provided with a fastening assembly 302, and the fastening assembly 302 passes through the first limiting plate 301 and the second limiting plate 303 to lock the first limiting plate 301 and the second limiting plate 303 on the hanger plate 1. The structure is convenient for the assembly of the hoisting rigging.

As shown in fig. 1-2, the limiting member 4 is a screw, and the end of the screw passes through the second extension portion 13, is located in the movable cavity 10 and is matched with the auxiliary plate 2, and the threaded portion of the screw is in threaded connection with the second extension portion 13.

Through the structure of screw and second extension 13 screw-thread fit, realize screwing in the screw with subplate 2 top tightly, remove the restriction to subplate 2 when screwing out the screw, be convenient for hanger plate 1 and subplate 2's relative position's regulation.

As shown in fig. 5, the lifting rigging of the second embodiment is different from the first embodiment in that the limiting member 4 is a quick locking bolt, the end portion of the quick locking bolt passes through the second extension portion 13, is located in the movable cavity 10 and is matched with the auxiliary plate 2, and the clamping portion of the quick locking bolt is matched with the second extension portion 13. The quick locking bolt is an outsourcing piece, when the cooperation of the auxiliary plate 2 and the limiting piece 4 is released, the quick locking bolt can be pulled out by pressing a button at the end part of the quick locking bolt, and the relative position of the hanger plate 1 and the auxiliary plate 2 is convenient to operate during adjustment.

As shown in fig. 6 to 11, the hoisting rigging of the third embodiment is different from the first embodiment in that the structure of the limiting member 4 is as follows: comprising a swivel base 42 hinged with the second extension 13 and a movable pin 41 mounted on the swivel base 42;

the rotary seat 42 comprises a guide cavity 4201 of a housing structure, and a spring 43 is arranged inside the guide cavity 4201;

the movable pin 41 includes a movable rod 4103, one end of the movable rod 4103 is a hand-held portion 4104, the hand-held portion 4104 is located outside the guide cavity 4201, the other end of the movable rod 4103 is a limit portion 4101, the limit portion 4101 passes through the center of the spring 43 inside the guide cavity 4201 and extends out of the guide cavity 4201, the auxiliary plate 2 and the second extension portion 13 are simultaneously matched with the limit portion 4101, one end of the spring 43 is connected with the guide cavity 4201, the other end of the spring 43 is connected with a baffle 4102 arranged in the middle of the movable rod 4103, and the spring 43 is in a compressed state.

The movable rod 4103 of the movable pin 41 is movable in the guide cavity 4201, as shown in fig. 7 and 10, after the rotary seat 42 and the movable pin 41 mounted on the rotary seat 42 are integrally rotated, the limit portion 4101 of the movable pin 41 is placed above between the sub-plate 2 and the second extension portion 13, the spring 43 in a compressed state pushes the stop piece 4102 to move the limit portion 4101 between the sub-plate 2 and the second extension portion 13, and the limit portion 4101 limits the relative displacement of the sub-plate 2 and the second extension portion 13 to press the sub-plate 2 against the movable cavity 10.

As shown in fig. 11, the movable pin 41 is pulled to further compress the spring 43 under the combined action of the baffle 4102 and the guide cavity 4201, and the rotation seat 42 is rotated after the limit part 4101 enters the guide cavity 4201, so that the movable pin 41 is placed above the second extension part 13, and the cooperation between the sub-plate 2 and the limit part 4 is released.

The auxiliary plate 2 is limited between the auxiliary plate 2 and the second extension part 13 through the matching structure of the rotating seat 42 hinged with the second extension part 13 and the movable pin 41 arranged on the rotating seat 42, so that the operation is convenient.

As shown in fig. 8 to 9, the second extension portion 13 is provided with a bolt 44, one side of the guide cavity 4201 is provided with a connection portion 4202, and the connection portion 4202 is hinged with the bolt 44;

the guide cavity 4201 is provided with a first through hole 4203 and a second through hole 4204, respectively, and the first through hole 4203 and the second through hole 4204 are simultaneously engaged with the movable bar 4103.

As shown in fig. 1-2, 12 and 13, the hoisting rigging of the fourth embodiment is based on the first, second and third embodiments, and the end of the sub-plate 2 located outside the movable chamber 10 is provided with a threaded hole 22.

The structure of the hanging ring assembly 5 is as follows: comprises a screw rod 51 connected with the threaded hole 22, and a hanging ring structure 52 is arranged at the end part of the screw rod 51. The sling structure 52 is used to attach slings.

The lifting ring assembly 5 is connected with the auxiliary plate 2 through the matching structure of the screw rod 51 and the threaded hole 22, when the space state requirement of a workpiece is high, the screw rod 51 can be rotated after the workpiece is lifted, the matching length of the screw rod 51 and the threaded hole 22 is adjusted, the total length of a rigging is accurately adjusted, and then the space three-dimensional state of the workpiece is accurately adjusted, so that the lifting requirement is met.

A handle 5102 is installed at one side of the screw 51 to facilitate rotation of the screw 51.

The hanging ring structure 52 comprises a U-shaped ring body 5202, connecting rings 5201 are arranged at two ends of the U-shaped ring body 5202, a circular boss 5101 is arranged at the end part of a screw rod 51, and after the screw rod 51 passes through a central hole 5203 in the middle of the connecting ring 5201, the circular boss 5101 is matched with the end face of the connecting ring 5201. When the screw 51 is rotated, the screw 51 rotates in the center hole 5203, keeping the state of the hanging ring structure 52 unchanged.

As shown in fig. 1-14, in the use process of the hoisting rigging of the utility model:

firstly, connecting a lifting ring structure 52 of a lifting ring assembly 5 with one end of a first lifting rope 91, connecting the other end of the first lifting rope 91 with a lifting point 7 of a workpiece 8, and hanging a lifting through hole 1101 on a lifting plate 1 on a lifting hook 6 of a crane; one end of the second sling 92 is connected with the lifting hook 6 of the crane, and the other end of the second sling 92 is connected with the other lifting point 7 of the workpiece 8;

then, the theoretical center of gravity position of the workpiece 8 is estimated, the total length L of the rigging at the position of the first sling 91 is calculated according to the lengths of the first sling 91 and the second sling 92 and the specification of the hoisting rigging, and the crane and the hoisting rigging are moved to a proper height above the center of gravity of the workpiece 8. After the relative positions of the lifting plate 1 and the auxiliary plate 2 in the lifting rigging are adjusted, the auxiliary plate 2 is tightly propped by the limiting piece 4, and then the workpiece 8 is lifted.

When the space state requirement of the workpiece 8 is higher, the rotatable handle 5102 enables the screw rod 51 to rotate, the matching length of the screw rod 51 and the threaded hole 22 is adjusted, the space three-dimensional state of the workpiece 8 is accurately adjusted, and the special requirement of hoisting the workpiece 8 is met.

The above description is intended to illustrate the utility model and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the utility model.

Claims

1. A hoisting rigging, characterized in that: including hanger plate (1), hanger plate (1) is including lifting by crane portion (11), be provided with hoist and mount through-hole (1101) on lifting by crane portion (11), lifting by crane portion (11) one side interval is provided with first extension (12) and second extension (13), forms movable chamber (10) between first extension (12) and second extension (13), is located inside first extension (12) lateral wall of movable chamber (10) and is provided with first tooth form structure (1201), and movable chamber (10) lower part opening still includes auxiliary plate (2), auxiliary plate (2) one end is located inside movable chamber (10), auxiliary plate (2) other end passes movable chamber (10) lower part opening and is located the hanger plate (1) outside and installs lifting ring subassembly (5), and one side of auxiliary plate (2) is provided with second tooth form structure (21), install spacing piece (4) on second extension (13), spacing piece (4) tip and auxiliary plate (2) are tightly cooperated in movable chamber (10) top.

2. A hoisting rig as claimed in claim 1, characterized in that: the front side and the rear side of the movable cavity (10) are communicated, the hanging plate (1) is provided with a clamping plate assembly (3), and the clamping plate assembly (3) has the following structure: including first limiting plate (301) and second limiting plate (303), the both ends of first limiting plate (301) are connected with the side of first extension (12) and second extension (13) respectively, the both ends of second limiting plate (303) are connected with the another side of first extension (12) and second extension (13) respectively, and first limiting plate (301) and second limiting plate (303) cooperate with subplate (2) simultaneously.

3. A hoisting rig as claimed in claim 2, characterized in that: the first extension part (12) and the second extension part (13) are provided with fastening components (302), and the fastening components (302) penetrate through the first limiting plate (301) and the second limiting plate (303) simultaneously to lock the first limiting plate (301) and the second limiting plate (303) on the hanging plate (1).

4. A hoisting rig as claimed in claim 1, characterized in that: the limiting piece (4) is a screw, the end part of the screw penetrates through the second extension part (13) and then is positioned in the movable cavity (10) and matched with the auxiliary plate (2), and the threaded part of the screw is in threaded connection with the second extension part (13).

5. A hoisting rig as claimed in claim 1, characterized in that: the limiting piece (4) is a quick locking bolt, the end part of the quick locking bolt penetrates through the second extension part (13) and then is located in the movable cavity (10) and is matched with the auxiliary plate (2), and the clamping part of the quick locking bolt is matched with the second extension part (13).

6. A hoisting rig as claimed in claim 1, characterized in that: the limiting piece (4) has the structure that: comprises a rotating seat (42) hinged with the second extension part (13) and a movable pin (41) arranged on the rotating seat (42);

the rotary seat (42) comprises a guide cavity (4201) of a shell structure, and a spring (43) is arranged inside the guide cavity (4201);

the movable pin (41) comprises a movable rod (4103), one end of the movable rod (4103) is a handheld part (4104), the handheld part (4104) is located outside the guide cavity (4201), the other end of the movable rod (4103) is a limiting part (4101), the limiting part (4101) penetrates through the center of a spring (43) inside the guide cavity (4201) and extends out of the guide cavity (4201), the auxiliary plate (2) and the second extension part (13) are matched with the limiting part (4101) at the same time, one end of the spring (43) is connected with the guide cavity (4201), the other end of the spring (43) is connected with a baffle plate (4102) arranged in the middle of the movable rod (4103), and the spring (43) is in a compressed state.

7. A hoisting rig as claimed in claim 6, characterized in that: a bolt (44) is mounted on the second extension part (13), a connecting part (4202) is arranged on one side of the guide cavity (4201), and the connecting part (4202) is hinged with the bolt (44);

the guide cavity (4201) is relatively provided with a first through hole (4203) and a second through hole (4204), and the first through hole (4203) and the second through hole (4204) are simultaneously matched with the movable rod (4103).

8. A hoisting rig as claimed in any one of claims 1-7, characterized in that: the end part of the auxiliary plate (2) positioned outside the movable cavity (10) is provided with a threaded hole (22);

the structure of the hanging ring assembly (5) is as follows: the lifting ring structure comprises a screw rod (51) connected with a threaded hole (22), and a lifting ring structure (52) is arranged at the end part of the screw rod (51).

9. A hoisting rig as claimed in claim 8, characterized in that: a handle (5102) is arranged at one side of the screw rod (51).

10. A hoisting rig as claimed in claim 8, characterized in that: the lifting ring structure (52) comprises a U-shaped ring body (5202), connecting rings (5201) are arranged at two ends of the U-shaped ring body (5202), round bosses (5101) are arranged at the ends of the screw rods (51), and after the screw rods (51) penetrate through central holes (5203) in the middle of the connecting rings (5201), the round bosses (5101) are matched with the end faces of the connecting rings (5201).