Overhead lifting appliance for super-span steel truss

Abstract

The utility model relates to the technical field of lifting processing, and one embodiment of the utility model provides a super-span steel truss high-altitude lifting appliance which comprises a lifting frame, a stress pull ring is arranged at the upper end of the lifting frame, a driving clamping assembly is arranged in the lifting frame, and a limiting linkage assembly is arranged at the lower end of the lifting frame; the driving clamping assembly comprises a through hole, the through hole is formed in the side wall of the lifting frame, a driving shaft is inserted into the through hole, and the stress clamp corresponds to the driving clamp in position. By means of the technical scheme, the problems that in the related technology / the prior art, when a traditional steel truss lifting tool is used for lifting the super-span steel truss, the clamping stability is poor, due to the fact that the super-span steel truss is large in size and complex in shape, the traditional lifting tool cannot achieve uniform and stable clamping, and in the lifting process, the clamping stability is poor are solved; and the steel truss is extremely easy to shake and displace, so that the mounting precision is seriously influenced, and safety accidents are possibly caused.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of lifting and processing technology, and more specifically, to a high-altitude lifting device for ultra-long span steel trusses. Background Technology

[0002] In the construction of modern large-scale building projects, such as stadiums, convention centers, and industrial plants, ultra-span steel truss structures have become a key choice for large-space buildings due to their excellent load-bearing capacity and spatial performance. However, ultra-span steel trusses are large in size and heavy in weight, making their high-altitude hoisting operations extremely challenging and placing extremely high demands on the performance and safety of hoisting equipment.

[0003] Traditional steel truss lifting equipment exhibits numerous problems when handling the lifting of super-span steel trusses. First, its clamping stability is poor. Due to the large size and complex shape of super-span steel trusses, traditional lifting equipment struggles to achieve uniform and stable clamping. During lifting, the steel truss is prone to swaying and displacement, which not only severely affects installation accuracy but may also lead to safety accidents. Second, the coordination during lifting is poor. Traditional lifting equipment lacks an effective limit linkage mechanism, resulting in inconsistent actions of various clamping parts. This further exacerbates uneven stress on the steel truss, increasing the risk of structural deformation and damage. In addition, safety protection measures are inadequate. Traditional lifting equipment lacks reliable safety guarantees in the face of emergencies, making it difficult to adequately protect workers and construction equipment. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a high-altitude lifting device for ultra-span steel trusses, which solves many problems exposed by traditional steel truss lifting devices in the prior art when facing the lifting operation of ultra-span steel trusses. First, the clamping stability is poor. Due to the large size and complex shape of ultra-span steel trusses, traditional lifting devices are difficult to achieve uniform and stable clamping. During the lifting process, the steel truss is prone to shaking and displacement, which not only seriously affects the installation accuracy, but may also cause safety accidents.

[0005] According to one aspect, at least one embodiment of this disclosure provides a super-span steel truss aerial work platform, comprising:

[0006] A lifting frame, wherein a force-bearing pull ring is provided at the upper end of the lifting frame;

[0007] A drive clamping assembly is disposed inside the lifting frame;

[0008] A limit linkage component is provided at the lower end of the hoisting frame;

[0009] The drive clamping assembly includes a through hole, which is opened on the side wall of the hoisting frame. A drive shaft is inserted into the through hole, and a drive sleeve is fitted on the drive shaft. Pushing discs are provided on opposite side walls of the drive sleeve. A drive clamp is provided on the lower end face of the drive sleeve. A sliding groove is provided on the inner bottom surface of the hoisting frame. The bottom of the drive clamp passes through the sliding groove. A force-bearing clamp is provided on the lower end face of the hoisting frame, and the force-bearing clamp is positioned corresponding to the drive clamp.

[0010] As a further technical solution, the inner sidewall of the drive sleeve is provided with a positioning groove, and the drive shaft is provided with a positioning protrusion, which is embedded in the positioning groove.

[0011] As a further technical solution, a push cylinder is provided on the inner bottom surface of the hoisting frame, and the telescopic end of the push cylinder is fixedly connected to the drive clamp.

[0012] As a further technical solution, the limiting linkage component includes a drive cavity, which is opened in the hoisting frame and communicates with the sliding groove. The side wall of the drive shaft is provided with an elbow frame, and the side wall of the elbow frame is provided with a linkage shaft. The linkage shaft is inserted into the drive cavity and is fixedly connected to the drive clamp.

[0013] As a further technical solution, the driving clamp and the force-receiving clamp are fitted with contact sleeves.

[0014] As a further technical solution, a protective safety ring is provided on the inner side wall of the force-bearing pull ring, and the protective safety ring is at the same horizontal line as the force-bearing pull ring.

[0015] As a further technical solution, the sliding groove and the number of driving clamps are several, and the telescopic end of the pushing cylinder is fixed to one of the driving clamps by welding. The cross-section of the driving clamp is circular, and the driving clamp has an L-shaped structure. The driving clamp and the force-bearing clamp are aligned and fitted together.

[0016] As a further technical solution, a force-bearing pull wire is connected to the force-bearing pull ring, and a safety pull wire is connected to the protective safety ring.

[0017] As a further technical solution, the driving cavity extends through the hoisting frame, and a driving hole is provided at the connection between the hoisting frame and the driving cavity.

[0018] As a further technical solution, the push disk has a fan-shaped structure, and push disks are provided on opposite sides of each drive sleeve.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the coordinated design of the drive clamping assembly and the limit linkage assembly achieves stable clamping of the super-span steel truss. The cooperation of multiple drive clamps and force clamps, along with the contact sleeve to increase friction, can evenly distribute the weight of the steel truss, effectively avoiding swaying and displacement during hoisting, and significantly improving installation accuracy. In addition, the dual design of the force-bearing pull ring and the protective safety ring allows the force-bearing pull ring to play the main hoisting role during normal operations; in the event of an emergency, the safety line connected to the protective safety ring can immediately play its role in preventing the steel truss from falling, providing comprehensive safety protection for workers and construction equipment, and reducing the probability of safety accidents.

[0021] 2. In this disclosure, the lifting device has a built-in push cylinder, which provides powerful power for driving the clamping components. It is simple and efficient to operate. Compared with the complicated operation process of traditional lifting devices, this lifting device only needs to start the push cylinder to realize the synchronous action of the driving clamp, quickly complete the clamping and releasing of the steel truss. The limit linkage component ensures that the actions of each clamping part are coordinated and consistent, avoiding structural deformation and damage caused by uneven force, and reducing rework costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is a cross-sectional view of the lifting frame disclosed herein;

[0025] Figure 3 This is a sectional view of the lifting frame disclosed herein;

[0026] Figure 4 Appendix to this disclosure Figure 2 Enlarged view of part A.

[0027] In the diagram: 1. Lifting frame; 2. Force-bearing pull ring; 3. Drive clamping assembly; 3-1. Through hole; 3-2. Drive shaft; 3-3. Drive sleeve; 3-4. Push plate; 3-5. Drive clamp; 3-6. Sliding groove; 3-7. Force-bearing clamp; 3-8. Positioning groove; 3-9. Positioning protrusion; 3-10. Push cylinder; 4. Limit linkage assembly; 4-1. Drive cavity; 4-2. Elbow frame; 4-3. Linkage shaft; 5. Contact sleeve; 6. Protective safety ring; 7. Force-bearing pull line; 8. Safety pull line; 9. Drive hole. Detailed Implementation

[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] like Figures 1-4 As shown, it illustrates a super-span steel truss aerial work platform of this disclosure, comprising:

[0035] The hoisting frame 1 has a tension ring 2 at its upper end;

[0036] Drive clamping assembly 3, which is located inside the lifting frame 1;

[0037] Limit linkage component 4 is installed at the lower end of the hoisting frame 1;

[0038] The drive clamping assembly 3 includes a through hole 3-1, which is located on the side wall of the lifting frame 1. A drive shaft 3-2 is inserted into the through hole 3-1. A drive sleeve 3-3 is fitted onto the drive shaft 3-2. Pushing discs 3-4 are provided on the opposite side walls of the drive sleeve 3-3. A drive clamp 3-5 is provided on the lower end face of the drive sleeve 3-3. A sliding groove 3-6 is provided on the inner bottom surface of the lifting frame 1. The bottom of the drive clamp 3-5 passes through the sliding groove 3-6. A force-bearing clamp 3-7 is provided on the lower end face of the lifting frame 1. The force-bearing clamp 3-7 is positioned corresponding to the drive clamp 3-5.

[0039] The inner bottom surface of the hoisting frame 1 is provided with a push cylinder 3-10, and the telescopic end of the push cylinder 3-10 is fixedly connected to the drive clamp 3-5.

[0040] In some examples, positioning protrusions 3-9 are precisely machined on the drive shaft 3-2, and push disks 3-4 are welded or installed on the opposite side walls of the drive sleeve 3-3. The push disks 3-4 have a fan-shaped structure, and each drive sleeve 3-3 has a push disk 3-4 on its opposite sides. Drive clamps 3-5 are welded to the lower end face of the drive sleeve 3-3. The drive clamps 3-5 have an L-shaped structure with a circular cross-section, and there are several of them. Sliding grooves 3-6 are machined on the inner bottom surface of the lifting frame 1. The number of sliding grooves 3-6 matches the number of drive clamps 3-5, and their positions correspond so that the bottom of the drive clamps 3-5 can pass through the sliding grooves 3-6. Force clamps 3-7 are installed on the lower end face of the lifting frame 1 so that their positions correspond to those of the drive clamps 3-5.

[0041] Select the appropriate specification of hydraulic cylinder according to the thrust requirements of the design, install it on the inner bottom surface of the lifting frame 1, and fix the telescopic end of the push hydraulic cylinder 3-10 to one of the drive clamps 3-5 by welding to ensure a firm connection;

[0042] like Figures 1-4As shown, in this embodiment, the inner sidewall of the drive sleeve 3-3 is provided with a positioning groove 3-8, and the drive shaft 3-2 is provided with a positioning protrusion 3-9. The positioning protrusion 3-9 is embedded in the positioning groove 3-8. The limiting linkage component 4 includes a drive cavity 4-1, which is opened in the hoisting frame 1 and is connected to the sliding groove 3-6. The sidewall of the drive shaft 3-2 is provided with an elbow frame 4-2, and the sidewall of the elbow frame 4-2 is provided with a linkage shaft 4-3. The linkage shaft 4-3 is inserted into the drive cavity 4-1 and is fixedly connected to the drive clamp 3-5.

[0043] In some examples, the drive sleeve 3-3 is machined, and a positioning groove 3-8 matching the positioning protrusion 3-9 is machined on its inner sidewall to ensure that the positioning protrusion 3-9 can be embedded in the positioning groove 3-8, thereby realizing the positioning and relative rotation between the drive shaft 3-2 and the drive sleeve 3-3. The drive cavity 4-1 is precisely machined in the lifting frame 1 to connect with the sliding groove 3-6. The elbow frame 4-2 is made and installed on the side wall of the drive shaft 3-2. The linkage shaft 4-3 is installed on the side wall of the elbow frame 4-2 so that the linkage shaft 4-3 can be inserted into the drive cavity 4-1. The linkage shaft 4-3 is fixedly connected to the drive clamp 3-5 to ensure the linkage effect.

[0044] For example, such as Figure 1 As shown, the drive clamp 3-5 and the force clamp 3-7 are fitted with contact sleeves 5, and the inner wall of the force pull ring 2 is provided with a protective safety ring 6, which is at the same horizontal line as the force pull ring 2.

[0045] In some examples, contact sleeves 5 are fitted onto the drive clamp 3-5 and the force clamp 3-7. The contact sleeves 5 can be made of materials such as wear-resistant rubber to increase friction and protect the suspended object.

[0046] For example, such as Figure 2 As shown, there are several sliding grooves 3-6 and drive clamps 3-5. The telescopic end of the push cylinder 3-10 is fixed to one of the drive clamps 3-5 by welding. The drive clamp 3-5 has a circular cross-section and an L-shaped structure. The drive clamp 3-5 and the force clamp 3-7 are aligned and fitted together.

[0047] For example, such as Figure 3 As shown, a tension wire 7 is connected to the tension ring 2, and a safety wire 8 is connected to the safety ring 6.

[0048] In some examples, the tension wire 7 is used to drive the lifting frame 1 to lift, and the safety wire 8 is used as a backup safety measure.

[0049] For example, such as Figure 2 As shown, the drive cavity 4-1 passes through the hoisting frame 1, and a drive hole 9 is provided at the connection between the hoisting frame 1 and the drive cavity 4-1.

[0050] In some examples, a drive hole 9 is provided at the connection between the hoisting frame 1 and the drive cavity 4-1, and the drive hole 9 is used to connect the drive cavity 4-1.

[0051] For example, such as Figure 1 As shown, the push disk 3-4 has a fan-shaped structure, and push disks 3-4 are provided on both sides of each drive sleeve 3-3.

[0052] In use, connect the tension cable 7 to the tension ring 2 and the safety cable 8 to the protective safety ring 6. The tension cable 7 is used to connect the lifting equipment, and the safety cable 8 serves as a safety backup measure. Place the overspan steel truss in a suitable position so that the tension clamp 3-7 and drive clamp 3-5 of the lifting device can clamp the appropriate parts of the steel truss. Activate the push cylinder 3-10, pushing the extension end of the cylinder 3-10 to extend and push the drive clamp 3-5 connected to it. Since the drive clamp 3-5 is connected to other drive clamps 3-5 through the limit linkage component 4, all drive clamps 3-5... -5 moves towards the force clamp 3-7, thereby clamping the steel truss. The lifting equipment pulls the force cable 7 to lift the steel truss for high-altitude operation. During the lifting process, the safety cable 8 on the protective safety ring 6 is always in a slack state as a safety backup. If the force cable 7 has a problem, the safety cable 8 can immediately play its role to prevent the steel truss from falling. After the steel truss is lifted to the designated position, the push cylinder 3-10 is activated to retract its telescopic end, driving the clamp 3-5 to move away from the force clamp 3-7, releasing the steel truss and completing the lifting operation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A high-altitude lifting device for ultra-span steel trusses, characterized in that, include: A hoisting frame (1) is provided with a force-bearing pull ring (2) at its upper end; A drive clamping assembly (3) is disposed inside the lifting frame (1); Limiting linkage component (4), the limiting linkage component (4) is disposed at the lower end of the hoisting frame (1); The drive clamping assembly (3) includes a through hole (3-1) on the side wall of the hoisting frame (1). A drive shaft (3-2) is inserted into the through hole (3-1). A drive sleeve (3-3) is fitted on the drive shaft (3-2). Pushing discs (3-4) are provided on the opposite side walls of the drive sleeve (3-3). A drive clamp (3-5) is provided on the lower end face of the drive sleeve (3-3). A sliding groove (3-6) is provided on the inner bottom surface of the hoisting frame (1). The bottom of the drive clamp (3-5) passes through the sliding groove (3-6). A force-bearing clamp (3-7) is provided on the lower end face of the hoisting frame (1). The force-bearing clamp (3-7) is positioned corresponding to the drive clamp (3-5).

2. The high-altitude lifting device for ultra-span steel trusses according to claim 1, characterized in that, The inner wall of the drive sleeve (3-3) is provided with a positioning groove (3-8), and the drive shaft (3-2) is provided with a positioning protrusion (3-9), which is embedded in the positioning groove (3-8).

3. The high-altitude lifting device for ultra-span steel trusses according to claim 1, characterized in that, The inner bottom surface of the hoisting frame (1) is provided with a push cylinder (3-10), and the telescopic end of the push cylinder (3-10) is fixedly connected to the drive clamp (3-5).

4. The high-altitude lifting device for a super-span steel truss as described in claim 1, characterized in that, The limiting linkage assembly (4) includes a drive cavity (4-1), which is located inside the hoisting frame (1). The drive cavity (4-1) is connected to the sliding groove (3-6). A bend frame (4-2) is provided on the side wall of the drive shaft (3-2), and a linkage shaft (4-3) is provided on the side wall of the bend frame (4-2). The linkage shaft (4-3) is inserted into the drive cavity (4-1) and is fixedly connected to the drive clamp (3-5).

5. The high-altitude lifting device for ultra-span steel trusses according to claim 1, characterized in that, The drive clamp (3-5) and the force clamp (3-7) are fitted with contact sleeves (5).

6. The high-altitude lifting device for ultra-span steel trusses according to claim 1, characterized in that, The inner wall of the force-bearing pull ring (2) is provided with a protective safety ring (6), and the protective safety ring (6) is at the same horizontal line as the force-bearing pull ring (2).

7. The high-altitude lifting device for a super-span steel truss according to claim 3, characterized in that, The sliding groove (3-6) and the drive clamp (3-5) are of several kinds. The telescopic end of the push cylinder (3-10) is fixed to one of the drive clamps (3-5) by welding. The drive clamp (3-5) has a circular cross-section and an L-shaped structure. The drive clamp (3-5) and the force clamp (3-7) are aligned and fitted together.

8. A high-altitude lifting device for a super-span steel truss according to claim 6, characterized in that, The force-bearing pull ring (2) is connected to a force-bearing pull wire (7), and the protective safety ring (6) is connected to a safety pull wire (8).

9. A high-altitude lifting device for a super-span steel truss according to claim 4, characterized in that, The drive cavity (4-1) penetrates the hoisting frame (1), and a drive hole (9) is provided at the connection between the hoisting frame (1) and the drive cavity (4-1).

10. A high-altitude lifting device for ultra-span steel trusses according to claim 1, characterized in that, The push disk (3-4) has a fan-shaped structure, and push disks (3-4) are provided on opposite sides of each drive sleeve (3-3).

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