Special fixture suitable for net rack hoisting ball joint
By designing a special clamp for hoisting spherical nodes of a space frame, the safety hazards of easily damaged spherical nodes and dismantling lifting lugs during high-altitude operations were solved, thus achieving safety in the hoisting process and the reusability of the clamp.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA SHANXI SIJIAN GRP
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-05
AI Technical Summary
During hoisting, the ball joint is easily damaged, posing a safety hazard, and removing the lifting lugs at height may damage the base material.
Design a special clamp for hoisting ball nodes in a space frame, including a base, a limiting plate, an upper liner, and a clamping plate. The limiting plate and clamping plate fix the wire rope to avoid direct contact with the ball node and ensure hoisting safety.
It ensures safety during the hoisting process and protects the ball joints. The clamps are easy to disassemble, suitable for ball joints of different diameters, and are reliable for repeated use.
Smart Images
Figure CN224198996U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction technology, specifically relating to a special clamp for hoisting ball nodes of a space frame. Background Technology
[0002] Space frame structures are statically indeterminate structures, characterized by structural stability and economical steel consumption, and are widely used in large-span public buildings, industrial plants, and other construction projects. Based on node type, space frame structures can be divided into welded spherical node space frames and bolted spherical node space frames. Both types share the common construction process of hoisting. During hoisting, spherical nodes, being spherical, cannot be secured with steel wire ropes. If hoisting wire ropes are tied to the connection points between the members and the spheres, the shear force generated during hoisting can easily damage the nodes, leading to structural instability and posing serious safety hazards. If hoisting lugs are welded to the spherical nodes, they must be removed later through high-altitude operations, which can easily damage the base material during flame cutting. Utility Model Content
[0003] The purpose of this utility model is to provide a special clamp for hoisting ball nodes of a space frame. By using this utility model, the hoisting process of the space frame structure can be guaranteed to be safe and without damaging the ball nodes, rods and connecting nodes.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A special clamp for hoisting ball nodes in a space frame includes a circular base at the bottom of the ball node. The base has symmetrical arc-shaped limiting plates on its two middle edges for limiting the wire rope. The radius of the limiting plates matches the radius of the ball node. An upper liner is provided between the tops of the limiting plates on the same side of the base. The base has door-shaped clamping plates on both sides of its bottom. A lower liner is provided on the upper part of the clamping plates.
[0006] Furthermore, the inner diameter of the base is half the outer diameter of the ball node.
[0007] Furthermore, the height of the top of the limiting plate from the top of the base is 60mm, and the length of the limiting plate extending out of the base is 63mm.
[0008] Furthermore, the spacing between the limiting plates located on the same side of the base is 60mm.
[0009] Furthermore, the upper liner is flush with the top of the two limiting plates.
[0010] Furthermore, the card plate is arranged symmetrically with respect to the center of the base.
[0011] Furthermore, the card plate is located at the bottom of the side of the base where the limiting plate is located.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. This utility model is easy to disassemble and install, and can be reused repeatedly.
[0014] 2. This utility model is safe and reliable. The clamp is placed at the bottom of the ball node, and the steel wire rope passes through the clamp. Under the weight of the grid frame, the steel wire rope acts on the clamp, so that the clamp is tightly supported by the ball node. At the same time, the upper and lower liner plates of the clamp can prevent the steel wire rope from damaging the ball. Attached Figure Description
[0015] Figure 1 This is a top view of the structure of this utility model;
[0016] Figure 2 This is a side view of the structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the usage state of this utility model;
[0018] Wherein: 1-base; 2-limiting plate; 3-upper liner; 4-clamping plate; 5-lower liner; 6-ball joint; 7-steel wire rope. Detailed Implementation
[0019] The present invention will be further described with reference to the accompanying drawings.
[0020] As shown in the figure, a special clamp for hoisting ball nodes of a space frame includes a circular cross-section base 1 located at the bottom of the ball node 6. The middle two sides of the base 1 are symmetrically provided with arc-shaped limiting plates 2 for limiting the steel wire rope 7. The radius of the limiting plates 2 matches the radius of the ball node 6. An upper liner 3 is provided between the tops of the limiting plates 2 on the same side of the base 1. The bottom two sides of the base 1 are provided with clamping plates 4 with a door-shaped cross-section. The upper part of the clamping plates 4 is provided with a lower liner 5.
[0021] Furthermore, the inner diameter of the base 1 is half the outer diameter of the ball node 6.
[0022] Furthermore, the upper liner 6 is flush with the top of the two limiting plates 2.
[0023] Furthermore, the card plate 4 is arranged symmetrically with respect to the center of the base 1.
[0024] Furthermore, the card plate 4 is located at the bottom of the side of the base 1 where the limiting plate 2 is provided.
[0025] The base 1 is made of 25mm steel plate by bending, and the joints are connected by equal-strength penetration welding. The height of the base 1 is 300mm. Steel wire rope limiting plates 2 are welded to both sides of the middle of the base 1. These limiting plates 2 are made of 25mm steel plate and cut into an arc shape according to the radius of the hoisting ball node. The height of the limiting plate 2 is 40mm, the top of the limiting plate 2 is 60mm from the top of the base 1, and the distance extending beyond the base 1 is 63mm. The two limiting plates 2 are symmetrically arranged with a spacing of 60mm. An upper liner 3, 20mm thick, is installed on top of the limiting plates 2, flush with the top of the two limiting plates 2, and welded between them. Its main function is to prevent the steel wire rope 7 from contacting the ball node 6. A "gate-shaped" clamping plate 4 is installed at the bottom of the base 1, and a lower liner 5 is installed on top of the clamping plate 4 to prevent the steel wire rope 7 from contacting the ball node 6. The lower liner 5 is 20mm high and made of 20mm steel plate.
[0026] When using this utility model, the base 1 is snapped onto the bottom of the ball joint 6, and the two ends of the steel wire rope 7 are respectively passed around the upper liner 3 between the limiting plates 2 and the lower liner 5 of the bottom clamping plate 4 for hoisting. After hoisting to the appropriate position, only the steel wire rope and clamp need to be removed.
[0027] Utilizing the principle of this clamp, hoisting clamps of corresponding specifications are made according to bolt balls and welded balls of different diameters. The clamps are easy to disassemble and can be reused.
[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A special clamp for hoisting spherical nodes in a space frame, characterized in that: The base (1) has a circular cross-section located at the bottom of the ball node (6). The middle two sides of the base (1) are symmetrically provided with arc-shaped limiting plates (2) for limiting the wire rope (7). The radius of the limiting plates (2) matches the radius of the ball node (6). An upper liner (3) is provided between the tops of the limiting plates (2) on the same side of the base (1). The bottom two sides of the base (1) are provided with door-shaped clamping plates (4). The upper part of the clamping plates (4) is provided with a lower liner (5).
2. The special clamp for hoisting spherical nodes of a space frame according to claim 1, characterized in that: The inner diameter of the base (1) is half the outer diameter of the ball node (6).
3. A special clamp for hoisting spherical nodes of a space frame according to claim 1, characterized in that: The top of the limiting plate (2) is 60mm above the top of the base (1), and the length of the limiting plate (2) extending out of the base is 63mm.
4. A special clamp for hoisting spherical nodes of a space frame according to claim 1, characterized in that: The distance between the limiting plates (2) located on the same side of the base (1) is 60mm.
5. A special clamp for hoisting spherical nodes of a space frame according to claim 1, characterized in that: The upper liner (3) is flush with the top of the two limiting plates (2).
6. A special clamp for hoisting spherical nodes of a space frame according to claim 1, characterized in that: The card plate (4) is arranged symmetrically with respect to the center of the base (1).
7. A special clamp for hoisting spherical nodes of a space frame according to claim 1, characterized in that: The card plate (4) is located at the bottom of the side of the base (1) where the limiting plate (2) is located.