Multi-point integral hoisting tooling based on large-span steel members

Abstract

The utility model discloses a multi -point integral hoisting tool based on large -span steel member, main hanger and secondary hanger, the main hanger is formed by two parallelly arranged main girder and a plurality of longitudinal connecting rods, and the top of main hanger is equipped with the lifting lug, and the secondary hanger is connected with the main hanger through the adjusting assembly, and the adjusting assembly realizes the left and right sliding of secondary hanger on the main hanger, and the hydraulic balance assembly is arranged on the secondary hanger, and the hydraulic balance assembly includes a plurality of hydraulic cylinders, and the piston rod end of each hydraulic cylinder is equipped with the lifting point, and the utility model relates to steel member hoisting technical field. The sliding connection design between the main hanger and the secondary hanger of the multi -point integral hoisting tool based on large -span steel member makes the position of secondary hanger can be flexibly adjusted according to the length and the gravity center distribution of steel member, to realize the even stress of multi -point, and secondly, the dynamic balance of each lifting point stress is realized through pressure sensor and control valve of hydraulic balance assembly, avoids the deformation or damage of component caused by local stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of steel component hoisting technology, specifically to multi-point integral hoisting fixtures for large-span steel components. Background Technology

[0002] Steel structure hoisting refers to the process of lifting steel components from the ground to the designed position and installing them using specialized equipment and tools. Steel structures are widely used in modern construction and bridge engineering due to their advantages such as high strength, light weight, and short construction period. Hoisting methods are mainly divided into two categories: single-point hoisting and multi-point hoisting. Multi-point hoisting is more suitable for handling large-span steel components.

[0003] Referring to patent publication number "CN111747284B", a space frame type combined lifting device is disclosed, including a steel space frame body, lifting components and hanging components; the steel space frame body is composed of a central space frame and an outer space frame, the central space frame includes top members, uprights, bottom members and node bolt balls, and the cross-section of the central space frame is rectangular or regular polygonal; in the central space frame, the top members and bottom members are arranged one-to-one, and uprights are provided between them; the top members, uprights and bottom members are fixedly connected by node bolt balls.

[0004] As shown in the above technology, existing lifting tools still have certain limitations in practical applications: First, they are mainly suitable for lifting components with regular geometric shapes. For large-span steel components with large lengths and uneven center of gravity distribution, it is difficult to achieve uniform force distribution at multiple points. Second, the lifting tool lacks the function of automatically adjusting the force on each lifting point. During the lifting process, local stress concentration can easily lead to deformation or even damage to the components. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a multi-point integral hoisting fixture based on large-span steel components, which solves the problem that existing fixtures are not suitable for large-span steel components with large lengths and uneven center of gravity distribution.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A multi-point integral hoisting fixture based on a large-span steel component includes a main hoist and a secondary hoist. The main hoist consists of two parallel main beams and several longitudinal connecting rods. The top of the main hoist is provided with a lifting lug. The secondary hoist is connected to the main hoist via an adjustment assembly, which enables the secondary hoist to slide left and right on the main hoist. A hydraulic balancing assembly is provided on the secondary hoist, which includes multiple hydraulic cylinders. The piston rod of each hydraulic cylinder is provided with a lifting point, and a quick-connect assembly is provided on the lifting point of the hydraulic cylinder.

[0007] Preferably, the main hanger is made of rectangular steel pipe, and the adjustment assembly includes two slide rails, front and rear. The two slide rails are fixedly connected to the front and back of the two main beams respectively. A slider is slidably connected inside the slide rail. The slider is connected to the secondary hanger by bolts. A lead screw is rotatably connected between the left and right sides of the inner wall of the slide rail. A drive motor is fixedly connected to the right side of the slide rail, and the output end of the drive motor is fixedly connected to one end of the lead screw.

[0008] Preferably, the secondary hanger includes multiple parallel support rods and connecting plates, each of the support rods being fixedly connected to the bottom of the connecting plate, the connecting plate being fixedly connected to two sliders by bolts, and the connecting plate having stabilizing structures on both the left and right sides of the middle part.

[0009] Preferably, the stabilizing structure includes two vertical rods, one at the front and one at the back, both of which are fixedly connected to the bottom of the connecting plate, and each of the vertical rods and the support rod is fixedly connected to a diagonal rod on the same side by fixing bolts.

[0010] Preferably, the hydraulic balancing assembly includes a hydraulic pump station, oil pipes, and multiple hydraulic cylinders. The hydraulic pump station is connected to the hydraulic cylinders via oil pipes. The multiple hydraulic cylinders are fixedly installed in pairs at both ends of the connecting plate. The piston rod end of the hydraulic cylinder is provided with a ball joint for connecting the lifting point. The hydraulic pump station is provided with a pressure sensor and a control valve.

[0011] Preferably, the quick-connect assembly includes a U-shaped buckle, a locking bolt, and a positioning pin. The locking bolt passes through the bottom of the U-shaped buckle to fix the U-shaped buckle to the bottom of the lifting point. The positioning pin is inserted into the positioning hole on the side of the U-shaped buckle. The surface of the positioning pin has two grooves, one above the other. Limiting spring sheets are fixedly connected to the inner walls of the two grooves, and the middle part of the limiting spring sheets is arc-shaped.

[0012] Beneficial effects

[0013] This utility model provides a multi-point integral hoisting fixture for large-span steel components. Compared with the prior art, it has the following advantages:

[0014] 1. This multi-point integral hoisting fixture based on large-span steel components connects the secondary hoist to the main hoist via an adjustment assembly. The adjustment assembly allows the secondary hoist to slide left and right on the main hoist. The secondary hoist is equipped with a hydraulic balancing assembly, which includes multiple hydraulic cylinders. The sliding connection design between the main and secondary hoists allows the position of the secondary hoist to be flexibly adjusted according to the length and center of gravity distribution of the steel component, thereby achieving uniform force distribution at multiple points. Furthermore, the hydraulic balancing assembly achieves dynamic balance of force at each hoisting point through pressure sensors and control valves, avoiding component deformation or damage caused by local stress concentration.

[0015] 2. This multi-point integral hoisting fixture based on large-span steel components includes a hydraulic balance component consisting of a hydraulic pump station, oil pipes, and multiple hydraulic cylinders. The hydraulic pump station is connected to the hydraulic cylinders via oil pipes. The multiple hydraulic cylinders are fixedly installed in pairs at both ends of the connecting plate. The piston rod of the hydraulic cylinder is equipped with a ball joint. The design of the quick-connect component simplifies the installation and disassembly process of the steel components, improves hoisting efficiency, and the design of the limit spring plate ensures that the positioning pin can maintain a certain stability when inserted into the U-shaped buckle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0017] Figure 2 This is a schematic diagram of the adjustment component and secondary hanger of this utility model;

[0018] Figure 3 This is a schematic diagram of the secondary hanger of this utility model;

[0019] Figure 4 This is a schematic diagram of the hydraulic balancing component of this utility model;

[0020] Figure 5 This is an enlarged view of part A of this utility model.

[0021] In the diagram: 1. Main hanger; 2. Secondary hanger; 21. Connecting plate; 22. Support rod; 23. Stabilizing structure; 231. Vertical rod; 232. Diagonal rod; 233. Fixing bolt; 3. Lifting lug; 4. Adjustment assembly; 41. Slide rail; 42. Slider; 43. Lead screw; 44. Drive motor; 5. Hydraulic cylinder; 6. Ball joint; 7. Lifting point; 8. U-shaped buckle; 9. Positioning pin; 91. Groove; 92. Limiting spring plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This multi-point integral hoisting tooling based on large-span steel components offers two technical solutions:

[0024] The first implementation includes a main hanger 1 and a secondary hanger 2. The main hanger 1 consists of two parallel main beams and several longitudinal connecting rods. The top of the main hanger 1 is provided with a lifting lug 3. The secondary hanger 2 is connected to the main hanger 1 through an adjustment assembly 4. The adjustment assembly 4 enables the secondary hanger 2 to slide left and right on the main hanger 1. The secondary hanger 2 is provided with a hydraulic balancing assembly, which includes multiple hydraulic cylinders 5. The piston rod end of each hydraulic cylinder 5 is provided with a lifting point 7, and a quick connection assembly is provided on the lifting point 7 of the hydraulic cylinder 5.

[0025] The main hanger 1 is made of rectangular steel pipe. The adjustment component 4 includes two slide rails 41, which are fixedly connected to the front and back of the two main beams respectively. A slider 42 is slidably connected inside the slide rail 41. The slider is connected to the secondary hanger 2 by bolts. A lead screw 43 is rotatably connected between the left and right sides of the inner wall of the slide rail 41. A drive motor 44 is fixedly connected to the right side of the slide rail 41, and the output end of the drive motor 44 is fixedly connected to one end of the lead screw 43.

[0026] The secondary hanger 2 includes multiple parallel support rods 22 and a connecting plate 21. The multiple support rods 22 are fixedly connected to the bottom of the connecting plate 21. The connecting plate 21 is fixedly connected to two sliders 42 by bolts. Stable structures 23 are provided on both the left and right sides of the middle part of the connecting plate 21.

[0027] The stabilizing structure 23 includes two vertical rods 231 at the front and rear. Both vertical rods 231 are fixedly connected to the bottom of the connecting plate 21. The vertical rods 231 and the support rod 22 are fixedly connected to diagonal rods 232 on the same side by fixing bolts 233.

[0028] The hydraulic balancing assembly includes a hydraulic pump station, oil pipes, and multiple hydraulic cylinders 5. The hydraulic pump station is connected to the hydraulic cylinders 5 through oil pipes. The multiple hydraulic cylinders 5 are fixedly installed at both ends of the connecting plate 21 in pairs. The piston rod end of the hydraulic cylinder 5 is provided with a ball joint 6, which is used to connect the lifting point 7. The hydraulic pump station is equipped with a pressure sensor and a control valve.

[0029] The sliding connection design between the main hanger 1 and the secondary hanger 2 allows the position of the secondary hanger 2 to be flexibly adjusted according to the length and center of gravity distribution of the steel component, thereby achieving uniform force distribution at multiple points. Secondly, the hydraulic balancing component achieves dynamic balance of force at each hanging point through pressure sensors and control valves, avoiding component deformation or damage caused by local stress concentration.

[0030] The second implementation differs from the first implementation in that the quick-connect assembly includes a U-shaped buckle 8, a locking bolt, and a positioning pin 9. The locking bolt passes through the bottom of the U-shaped buckle 8 to fix the U-shaped buckle 8 to the bottom of the lifting point 7. The positioning pin 9 is inserted into the positioning hole on the side of the U-shaped buckle 8. The surface of the positioning pin 9 has two grooves 91, one above the other. Limiting spring pieces 92 are fixedly connected to the inner walls of the two grooves 91, and the middle part of the limiting spring pieces 92 is arc-shaped.

[0031] The design of the quick-connect assembly simplifies the installation and disassembly process of steel components, improves hoisting efficiency, and the design of the limit spring plate 92 ensures that the positioning pin 9 can maintain a certain stability when inserted into the U-shaped buckle 8.

[0032] In use, first connect the main lifting frame 1 to the hook of the lifting equipment via 3. Then, adjust the position of the secondary lifting frame 2 according to the length and center of gravity distribution of the steel component. Start the drive motor 44 to make the lead screw 43 rotate. The rotation of the lead screw 43 drives the entire secondary lifting frame 2 to move through the slider 42. Next, align the lifting hole of the steel component with the U-shaped buckle 8 and insert the positioning pin 9 from the positioning hole on the side of the U-shaped buckle 8. The positioning pin 9 passes through the lifting hole of the steel component. After completing the above steps, start the hydraulic pump station. The pressure value of each hydraulic cylinder 5 is monitored in real time by the pressure sensor. The control valve automatically adjusts the hydraulic oil flow according to the pressure value so that the force at the lifting point reaches dynamic balance. Finally, use the lifting equipment to lift the entire lifting fixture to the design position to complete the lifting operation of the steel component.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-point integral hoisting tooling based on a long-span steel member, characterized in that: The system includes a main hanger (1) and a secondary hanger (2). The main hanger (1) consists of two parallel main beams and several longitudinal connecting rods. The top of the main hanger (1) is provided with a lifting lug (3). The secondary hanger (2) is connected to the main hanger (1) through an adjustment assembly (4). The adjustment assembly (4) enables the secondary hanger (2) to slide left and right on the main hanger (1). The secondary hanger (2) is provided with a hydraulic balancing assembly. The hydraulic balancing assembly includes multiple hydraulic cylinders (5). Each hydraulic cylinder (5) has a lifting point (7) at the end of its piston rod. The lifting point (7) of the hydraulic cylinder (5) is provided with a quick-connect assembly.

2. The multi-point integrated hoisting tooling based on long-span steel members as claimed in claim 1, wherein: The main hanger (1) is made of rectangular steel pipe. The adjustment assembly (4) includes two slide rails (41) at the front and back. The two slide rails (41) are fixedly connected to the front and back of the two main beams respectively. A slider (42) is slidably connected inside the slide rail (41). The slider is connected to the secondary hanger (2) by bolts. A lead screw (43) is rotatably connected between the left and right sides of the inner wall of the slide rail (41). A drive motor (44) is fixedly connected to the right side of the slide rail (41), and the output end of the drive motor (44) is fixedly connected to one end of the lead screw (43).

3. The multi-point integrated hoisting tooling based on long-span steel members as claimed in claim 1, wherein: The secondary hanger (2) includes multiple parallel support rods (22) and a connecting plate (21). The multiple support rods (22) are fixedly connected to the bottom of the connecting plate (21). The connecting plate (21) is fixedly connected to two sliders (42) by bolts. Stable structures (23) are provided on the left and right sides of the middle part of the connecting plate (21).

4. The multi-point integrated hoisting tooling based on long-span steel members as claimed in claim 3, wherein: The stabilizing structure (23) includes two vertical rods (231) at the front and rear. Both vertical rods (231) are fixedly connected to the bottom of the connecting plate (21). The vertical rods (231) and the support rod (22) are fixedly connected to diagonal rods (232) on the same side by fixing bolts (233).

5. The multi-point integrated hoisting kit based on long-span steel members as claimed in claim 1, wherein: The hydraulic balancing assembly includes a hydraulic pump station, oil pipes and multiple hydraulic cylinders (5). The hydraulic pump station is connected to the hydraulic cylinders (5) through oil pipes. The multiple hydraulic cylinders (5) are fixedly installed at both ends of the connecting plate (21). The piston rod end of the hydraulic cylinder (5) is provided with a ball joint (6). The ball joint (6) is used to connect the lifting point (7). The hydraulic pump station is provided with a pressure sensor and a control valve.

6. The multi-point integrated hoisting kit based on long-span steel members as claimed in claim 1, wherein: The quick-connect assembly includes a U-shaped buckle (8), a locking bolt, and a positioning pin (9). The locking bolt passes through the bottom of the U-shaped buckle (8) to fix the U-shaped buckle (8) to the bottom of the lifting point (7). The positioning pin (9) is inserted into the positioning hole on the side of the U-shaped buckle (8). The surface of the positioning pin (9) has two grooves (91) on the top and bottom. Limiting spring pieces (92) are fixedly connected to the inner walls of the two grooves (91), and the middle part of the limiting spring pieces (92) is arc-shaped.

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