Lifting appliance for lifting pipe piece for sunken vertical shaft

Abstract

The utility model provides a lifting appliance for lifting a pipe piece for a sunken vertical shaft, and aims to solve the problems and challenges in the existing lifting technology. The lifting appliance consists of key components such as a lifting appliance main body, a hollow lifting shaft, a stud handle and a bracket, and is particularly designed to be used for pipe piece lifting operation in a sunken vertical shaft. The inner side of the lifting appliance main body is designed to be in an arc shape and is perfectly attached to the duct piece, and meanwhile the lifting stability and accuracy are ensured through the lifting supporting legs and the positioning supporting legs. And the hollow lifting shaft and the stud handle are matched for use, so that the lifting process is quicker and more efficient. In addition, the lifting appliance further adopts innovative elements such as lightening hole design and a rubber gasket, so that the lifting convenience and safety are further improved. And due to the integral design of the whole lifting appliance, the loss risk of parts is reduced, the convenience of construction management is improved, and effective technical support is provided for the segment lifting operation in sunken vertical shaft construction.

Description

Technical Field

[0001] The utility model relates to the field of shaft drilling construction, and particularly relates to a sling for hoisting segments of a sunken vertical shaft. Background Art

[0002] In the current shaft construction technology, segment hoisting is a crucial link, and its safety and efficiency directly affect the progress and quality of the entire project. Although the traditional sling design can meet the hoisting requirements to a certain extent, many problems have emerged in the actual operation process.

[0003] Firstly, the sling point design of the traditional sling often does not coincide with the vertical line of the center of gravity of the object to be lifted, which causes the segment to be prone to skew during the hoisting process. This skew not only increases the difficulty of hoisting and segment assembly, but also may pose a threat to the safety of the construction site. Secondly, the traditional sling mainly relies on bolts to bear the vertical force, and this design shows poor reliability in practical applications. In the past, there have been segment hoisting accidents caused by bolt loosening or fracture, bringing great potential safety hazards to the construction site.

[0004] In addition, it takes a lot of time and labor to tighten the bolts when installing the sling. The heaviness of the traditional sling also brings many inconveniences to the hoisting operation. The overweight sling not only increases the operation difficulty, but also may cause an additional burden on the hoisting equipment.

[0005] At the same time, the lack of protection measures on the contact surface between the sling and the segment during hoisting is also a problem that cannot be ignored. During the hoisting process, the collision between the sling and the segment often causes damage to the segment, which not only affects the construction quality, but also increases the cost of maintenance and replacement. The traditional sling consists of multiple scattered parts, which brings a certain challenge to the management of the construction site. Due to the large number of accessories and easy loss, the construction progress is often blocked.

[0006] In view of the problems and deficiencies of the traditional sling, it is urgent for us to develop a new type of sling to meet the requirements of modern shaft construction for safety, efficiency, simplicity and protection. This new type of sling should have the characteristics of reasonable sling point design, high-strength and high-reliability load-bearing structure, simple and fast installation method, lightweight design, and protection measures for the contact surface between the sling and the segment. At the same time, it should also adopt an integrated and modular design concept to reduce the number of accessories and improve the management level of the construction site. Content of the Utility Model

[0007] The purpose of the utility model is to provide a sling for hoisting segments of a sunken vertical shaft in view of the problems existing in the background art.

[0008] To achieve the above object, the technical solution of the present utility model is to design a lifting tool for segment hoisting in a sunken vertical shaft, which is composed of a lifting tool main body, a hollow lifting shaft, a stud handle and a bracket. The surface of the inner side of the lifting tool main body that is butt-jointed with the segment to be lifted is an arc-shaped structure, which just fits the segment to be lifted. Two lifting legs and two positioning legs are arranged on both sides of the upper part of the lifting tool main body. Two lifting pin holes are respectively arranged at the lower parts of the positioning legs. The hollow lifting shaft is installed in the pin holes. The bracket is welded outside the lifting pin holes and is in a "concave" shape. A through hole is arranged in the middle of the bracket. The stud handle is connected to the hollow lifting shaft through the through hole to realize the insertion and extraction of the hollow lifting shaft into and out of the segment.

[0009] Furthermore, a lifting lug and a lifting lug reinforcing rib are welded on the lifting leg. During the lifting process, the vertical position of the lifting lug just overlaps with the center of gravity position of the whole composed of the lifting tool and the segment to be lifted, ensuring that the segment will not tilt during hoisting.

[0010] Furthermore, positioning holes are arranged on the positioning legs. The positions of the positioning holes are the same as the positions of the stud mounting holes on the segment to be lifted. When the lower hollow lifting shaft is inserted into the horizontal lifting pin hole of the segment to be lifted, their vertical positions are completely aligned. Appropriately adjust the position of the lifting tool and insert the stud into the positioning hole and the stud mounting hole, so as to ensure that the lifting tool cannot be separated from the segment.

[0011] Furthermore, weight-reducing holes are arranged on the lifting tool main body to ensure that the whole lifting tool is not too heavy to affect the lifting operation. The overall weight of the lifting tool and the segment is small, which can also reduce the requirement for the lifting equipment capacity at the construction site and reduce the construction cost.

[0012] Furthermore, the hollow lifting shaft is of a hollow structure and is as light as possible while ensuring strength and stiffness.

[0013] Furthermore, the hollow lifting shaft is composed of a cylinder and a stop at the front end. The stop side can cooperate with the lifting pin hole of the lifting tool main body to ensure that the hollow lifting shaft will not penetrate and fall off the lifting tool. A boss and a threaded hole are arranged on the stop side. The threaded hole does not penetrate through the boss structure. A guiding chamfer is arranged on the insertion side of the hollow lifting shaft to facilitate positioning and insertion into the lifting pin hole.

[0014] Preferably, a fillet is arranged at the corner of the stop to avoid stress concentration.

[0015] Further, the bracket includes a bracket support, a U-shaped bracket, a bracket shear block and bolts. The U-shaped bracket is welded to the bracket shear block, and the bracket shear block has a "convex" structure. The concave-convex stop design can achieve good positioning and can bear a large vertical load. The bracket support and the bracket shear block are tightly connected by the bolts.

[0016] Further, one end of the stud handle is provided with a thread, and the other end is bent. The stud handle passes through the through hole of the U-shaped bracket to lift the hollow lifting shaft.

[0017] Further, the design of the hollow lifting shaft, the U-shaped bracket, the stud handle and the main structure of the sling ensures that the pin shaft is completely pulled out from the segment, and the hollow lifting shaft will not be separated from the main structure of the sling. The entire sling forms a complete assembly, avoiding the loss of components at the construction site.

[0018] Preferably, rubber gaskets are provided on all surfaces of the sling in contact with the lifted segment, and the shape of the rubber gaskets is consistent with the contact surface of the structure.

[0019] Through the design of the hollow lifting shaft and the stud handle, the present utility model greatly simplifies the installation steps, making the hoisting process more rapid and efficient. At the same time, the precisely welded lifting lugs and stiffeners on the lifting legs ensure the stability of hoisting, effectively preventing the inclination of the segment during hoisting, thereby significantly improving construction safety. The weight-reducing holes designed on the main structure of the sling make the sling lighter, which not only reduces the operation difficulty but also decreases the dependence on heavy lifting equipment at the construction site, further reducing the construction cost. The positioning holes on the positioning legs match the stud mounting holes on the segment, enhancing the reliability of hoisting and effectively preventing the accidental separation of the sling and the segment during hoisting. Rubber gaskets are installed on all contact surfaces between the sling and the segment, and this design avoids the direct contact between the steel structure and the segment. Each component of the entire sling forms a compact and complete whole, and this integrated design greatly reduces the risk of loss of components at the construction site and improves the convenience of construction management. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model, and those skilled in the art can obtain other drawings without creative efforts based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0022] Figure 2It is a schematic diagram of the inner structure of the utility model.

[0023] Figure 3 It is a schematic installation diagram of the hollow lifting shaft of the utility model.

[0024] Figure 4 It is a schematic diagram of the hollow lifting shaft of the utility model.

[0025] Figure 5 It is a sectional view of the hollow lifting shaft of the utility model.

[0026] Figure 6 It is a top view of the working state of the utility model.

[0027] Among them, 1 - sling main body, 11 - hoisting bracket, 12 - positioning bracket, 13 - hoisting pin hole, 14 - lug reinforcing rib, 15 - positioning hole, 16 - weight reduction hole, 17 - lug, 2 - hollow lifting shaft, 21 - stop, 22 - boss, 23 - threaded hole, 24 - guiding bevel, 25 - fillet, 3 - stud handle, 4 - bracket, 41 - bracket support, 42 - U-shaped bracket, 43 - bracket shear block, 44 - bolt, 5 - rubber gasket. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. In the present utility model, unless otherwise stated, the orientation words such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device. Embodiment

[0029] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, a sling for segment hoisting in a sunken vertical shaft is composed of a sling main body 1, a hollow lifting shaft 2, a stud handle 3 and a bracket 4.

[0030] The inner side of the sling main body 1 is designed to be arc-shaped to perfectly fit the outer shape of the segment, providing stable support and positioning. On both sides of the upper part of the sling main body 1, there are two lifting legs 11 and two positioning legs 12. The design of these legs is used to enhance the stability of lifting and the accuracy of positioning.

[0031] The lifting legs 11 are welded with lifting lugs 17 and lug stiffeners 14 to ensure that the vertical position of the lifting lug 17 overlaps with the overall center of gravity of the sling and the segment during the lifting process, preventing tilting during lifting. Two lifting pin holes 13 are respectively configured at the lower parts of the positioning legs 12 for installing the hollow lifting shaft 2.

[0032] Weight reduction holes 16 are provided on the sling main body 1 to reduce the overall weight of the sling, facilitate the lifting operation, and reduce the requirements for the lifting equipment capacity at the construction site.

[0033] Rubber gaskets 5 are provided on all the surfaces where the sling is docked with the segment to avoid direct contact between the steel structure and the segment and protect the segment from damage.

[0034] The hollow lifting shaft 2 is installed in the lifting pin holes 13 and is inserted and pulled out through the stud handle 3. This design makes the installation and disassembly of the segment simple and fast. The hollow lifting shaft 2 consists of a cylindrical part and a stop 21 at the front end. The stop design can prevent the hollow lifting shaft 2 from passing through and falling off the sling.

[0035] The bracket 4 is welded outside the lifting pin holes 13 and is of a "concave" structure. A through hole is provided in the middle, enabling the stud handle 3 to be connected to the hollow lifting shaft 2 through this through hole. The bracket 4 includes parts such as a bracket support 41, a U-shaped bracket 42, and a bracket shear block 43. These parts work together to bear the vertical load and ensure the stability of lifting.

[0036] All the components of the entire sling form a compact and complete whole. This integrated design greatly reduces the risk of loss of components at the construction site and improves the convenience of construction management.

[0037] Specific construction method:

[0038] During use, first insert the hollow lifting shaft 2 into the lifting pin hole of the segment, and then fix it on the sling through the stud handle 3. Subsequently, lift the sling and the segment as a whole through the lifting equipment. Due to the design position of the lifting lug 17 overlapping with the overall center of gravity, the segment will remain stable during lifting and will not tilt. When the segment is lifted to the designated position, the hollow lifting shaft 2 can be easily pulled out of the segment to complete the lifting operation. During the whole process, all the components of the sling work together to ensure the accuracy and efficiency of lifting. At the same time, the integrated design of the sling also greatly reduces the risk of loss of components at the construction site and improves the convenience of construction management.

[0039] The above has introduced in detail a lifting tool for segment hoisting of a sunken vertical shaft provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A lifting device for lifting pipe segments for a sunken vertical shaft, comprising a lifting device body (1), a hollow lifting shaft (2), a stud handle (3) and a bracket (4), characterized in that: The surface of the inner side of the sling body (1) that butts against the lifted pipe segment is an arc-shaped structure. Two lifting legs (11) and two positioning legs (12) are arranged on both sides of the upper part of the sling body (1). Two lifting pin holes (13) are arranged at the lower part of the positioning legs (12). The hollow lifting shaft (2) is installed in the lifting pin hole (13). The bracket (4) is welded outside the lifting pin hole (13) and is a "concave" structure. A through hole is arranged in the middle of the bracket (4). The stud handle (3) is connected to the hollow lifting shaft (2) through the through hole to realize the insertion and extraction of the hollow lifting shaft (2) in the lifted pipe segment.

2. A lifting device for lifting pipe segments for a sunken vertical shaft according to claim 1, characterized in that: A lifting lug (17) and a lifting lug reinforcement rib (14) are welded to the lifting leg (11). During the lifting process, the vertical position of the lifting lug (17) overlaps with the center of gravity of the whole composed of the lifting device and the lifted pipe segment.

3. A lifting device for lifting pipe segments for a sunken vertical shaft according to claim 2, characterized in that: The positioning leg (12) is provided with a positioning hole (15), and the positioning hole (15) is arranged at the same position as the stud mounting hole on the suspended pipe segment. When the hollow lifting shaft (2) at the bottom is inserted into the transverse lifting pin hole (13) of the suspended pipe segment, the vertical positions of the two are completely aligned.

4. The lifting device for lifting pipe segments for a sunken vertical shaft according to claim 3, characterized in that: The hollow lifting shaft (2) is a hollow structure, and the hollow lifting shaft (2) is composed of a cylinder and a stopper (21) at the front end. The stopper (21) side can cooperate with the lifting pin hole (13) of the sling body (1) to ensure that the hollow lifting shaft (2) will not fall off the sling. A boss (22) and a threaded hole (23) are arranged on the stopper (21) side, and the threaded hole (23) does not pass through the boss (22) structure. A guide bevel is arranged on the insertion side of the hollow lifting shaft (2).

5. The lifting device for lifting pipe segments for a sunken vertical shaft according to claim 4, characterized in that: A rounded corner (25) is provided at the corner of the stop (21).

6. The lifting device for lifting pipe segments for a sunken vertical shaft according to claim 4, characterized in that: The bracket (4) comprises a bracket support (41), a U-shaped bracket (42), a bracket shear block (43) and a bolt (44); the U-shaped bracket (42) is welded to the bracket shear block (43); the bracket shear block (43) is a "convex" structure; the bracket support (41) and the bracket shear block (43) are fastened together by the bolt (44).

7. The lifting device for lifting pipe segments for a sunken vertical shaft according to claim 6, characterized in that: One end of the stud handle (3) is provided with a thread, and the other end is bent and passes through the through hole of the U-shaped bracket (42).

8. A lifting device for lifting pipe segments for a sunken vertical shaft according to any one of claims 1 to 7, characterized in that: The sling body (1) is provided with a weight-reducing hole (16).

9. A lifting device for lifting pipe segments for a sunken vertical shaft according to any one of claims 1 to 7, characterized in that: Rubber pads (5) are provided on each surface where the lifting device butts against the lifted pipe segment, and the shape of the rubber pads (5) is consistent with the contact surface of the structure.

Images