A steel structure net rack connecting joint capable of adjusting the angle of a rod

Abstract

The utility model provides a kind of steel structure net rack connecting joint of adjustable pole piece angle, it is related to net rack connecting technical field, including pedestal, pedestal is provided with multiple fixed seat along outer perimeter, wherein: fixed seat is provided with a pair of arc plate, both ends of a pair of arc plate are hingedly arranged on fixed seat, the rotation axis of a pair of arc plate is perpendicular to each other and is in same plane, a pair of arc plate is mutually crossed and is slidably matched, the middle part of a pair of arc plate is provided with cross hole along length direction, and the cross position of the cross hole of a pair of arc plate is slidably connected with clamping block;Positioning member is used for fixing the position of clamping block at the cross of arc plate;Fixed cylinder is fixedly arranged on clamping block, and it is used for inserting installation pole piece.The utility model can adapt to the included angle between different pole pieces and installation position, improve the assembly accuracy and construction convenience of net rack structure under complex space condition.

Description

Technical Field

[0001] This utility model relates to the field of space frame connection technology, and more specifically, to a steel structure space frame connection node with adjustable rod angles. Background Technology

[0002] Existing steel structure space frames are widely used in construction projects. They are mainly composed of several members connected by nodes. The connection nodes between the members are mostly fixed by welding to achieve spatial stability and uniform force transmission.

[0003] While this structure offers high connection strength and overall stability, it demands extremely high precision in positioning and angle control of each member during installation. Because welded joints are difficult to adjust once formed, deviations in dimensional accuracy or installation angles from the design during on-site construction often necessitate forced correction or repeated welding. This leads to reduced construction efficiency, unstable weld quality, and even affects the structure's load-bearing capacity. This is particularly problematic in large-span or complex spatial grid structures where the angles of members vary significantly in different directions; traditional welded joints struggle to accommodate multi-angle installation requirements and exhibit low adaptability. Utility Model Content

[0004] The purpose of this utility model is to provide a steel structure space frame connection node with adjustable member angles, which can adapt to the included angles and installation positions between different members, thereby improving the assembly accuracy and construction convenience of the space frame structure under complex spatial conditions.

[0005] This utility model is achieved through the following technical solution:

[0006] An adjustable member angle steel structure space frame connection node, comprising:

[0007] The base has multiple fixed seats arranged along its outer perimeter, wherein:

[0008] The fixed base is provided with a pair of arc-shaped plates. Both ends of the pair of arc-shaped plates are hinged to the fixed base. The rotation axes of the pair of arc-shaped plates are perpendicular to each other and are in the same plane. The pair of arc-shaped plates are arranged to cross each other and are slidably fitted. The middle part of the pair of arc-shaped plates is provided with a cross hole along the length direction. A locking block is slidably engaged at the intersection of the cross holes of the pair of arc-shaped plates.

[0009] A positioning element, which is used to fix the position of the snap-fit ​​block at the intersection of the arc-shaped plate;

[0010] A fixing cylinder is fixedly mounted on the snap-fit ​​block and is used to insert and install rods.

[0011] Furthermore, the positioning component includes a rod, a movable plate, and a driving component. Each pair of arc-shaped plates has multiple insertion holes along its length. The rod is fixedly mounted on the movable plate and is used to simultaneously insert into the snap-fit ​​block and the insertion holes. The driving component is used to drive the movable plate to move closer to or away from the snap-fit ​​block and fix it to the moved position.

[0012] Furthermore, the driving component includes a sleeve, an adjusting screw, and an adjusting nut. The sleeve is fixedly mounted on the movable plate. One end of the adjusting screw is ball-jointed on the fixed base, and the other end is coaxially slidably inserted into the sleeve. The adjusting nut is threaded onto the adjusting screw and abuts against the end of the sleeve.

[0013] Furthermore, four insertion rods are provided and located at the four corners of the movable plate, and insertion holes are provided on both sides of the cross hole of each pair of arc plates to correspond to the insertion and limiting of the four insertion rods.

[0014] Furthermore, the base is provided with multiple adjustment seats along its outer periphery, each adjustment seat has a limiting groove, a limiting plate is provided in the limiting groove, and a locking member is provided on the adjustment seat. The locking member is used to fix the position of the limiting plate in the limiting groove. An eccentric rod is provided at the offset center position of the limiting plate, and the fixing seat is fixedly mounted on the eccentric rod.

[0015] Furthermore, the cross-section of the limiting groove is a regular polygon.

[0016] Furthermore, the locking component includes a locking plate, which has a clearance hole for the eccentric rod to pass through. The locking plate is fixedly connected to the fixing seat by a locking bolt, and the limiting plate is pressed against the limiting groove.

[0017] Furthermore, an extension rod is connected between the adjusting seat and the base.

[0018] Furthermore, the fixed cylinder has multiple welding holes along its circumference.

[0019] Furthermore, the base is spherically shaped.

[0020] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0021] 1. This utility model achieves precise positioning of a member within a multi-angle range by using a pair of rotatable, limit-positioning arc-shaped plates. The pair of arc-shaped plates are hinged to a fixed base, with their rotation axes perpendicular to each other and lying in the same plane. This allows the two arc-shaped plates to rotate independently yet coordinately in space. When dimensional errors or installation angle deviations exist at the construction site, operators can precisely correct the member's direction by adjusting the rotation angle of the arc-shaped plates, significantly improving the adaptability of the joint to different installation angles. Functionally similar to a universal joint, this structure, due to the mutual support and cooperation between the pair of arc-shaped plates, results in a more balanced overall force distribution and significantly improved stability. It can withstand greater external forces and construction loads, avoiding the swaying and instability problems caused by excessive adjustment or excessive structural flexibility in traditional adjustable joints.

[0022] 2. This utility model utilizes the interlocking design of a pair of arc-shaped plates with interlocking holes to directly drive the interlocking block during relative rotation, thereby adjusting the position of the fixed cylinder. Once the arc-shaped plates are adjusted to the target angle, the interlocking block automatically slides to the corresponding position and achieves a self-locking engagement, providing excellent angle retention. During this process, positioning components lock the interlocking block to prevent loosening or displacement of the node under stress or vibration, ensuring the stability and reliability of the installed node. The connection structure between the fixed cylinder and the interlocking block makes the insertion of members simpler and more secure, eliminating the need for cumbersome alignment and welding operations, thus significantly improving construction efficiency and installation accuracy. The overall design achieves high adaptability and stability of the structure, making it particularly suitable for installation scenarios involving large spans or multi-directional space frames, effectively solving the problems of difficult installation and poor angle adaptability of traditional welded nodes. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of a steel structure space frame connection node with adjustable rod angle provided by this utility model;

[0024] Figure 2 This utility model aims to show the base, adjusting seat, locking component, fixing seat, and exploded view of the fixing seat;

[0025] Figure 3 This utility model aims to show the structural schematic diagram of the limiting plate, the fixing seat, the arc plate, the snap-fit ​​block, and the fixing cylinder;

[0026] Figure 4 This utility model aims to show exploded views of the driving component, the snap-fit ​​block, and the fixing cylinder;

[0027] Figure 5 This utility model is intended to show the structural diagram of the positioning component, the eccentric rod, and the limiting plate;

[0028] Reference numerals: 100, base; 200, fixed seat; 210, arc plate; 211, cross hole; 212, insertion hole; 220, snap-fit ​​block; 230, positioning component; 231, insertion rod; 232, moving plate; 233, driving component; 2331, sleeve; 2332, adjusting screw; 2333, adjusting nut; 240, fixed cylinder; 241, welding hole; 300, adjusting seat; 310, limiting groove; 320, limiting plate; 330, locking component; 331, locking plate; 332, clearance hole; 333, locking bolt; 340, eccentric rod; 350, extension rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] Example

[0032] The following is for reference Figures 1-5 As shown in the figure, and further explained with reference to specific embodiments, this embodiment provides a steel structure space frame connection node with adjustable rod angle, including a base 100. The base 100 is spherically shaped, and multiple fixing seats 200 are arranged along the outer periphery of the base 100. The number of these fixing seats can be installed according to the required quantity, without any specific limit on the quantity. For example, four or five fixing seats can be installed as a module on the base 100.

[0033] As the core load-bearing component of the entire node, the base 100 should be made of high-strength cast steel or forged steel to ensure the overall rigidity and durability of the sphere under multi-directional stress. The surface of the base 100 can be hardened or shot-peened to improve fatigue life.

[0034] A pair of arc-shaped plates 210 are installed on the side of the fixed base 200 away from the base 100. Both ends of the pair of arc-shaped plates 210 are hinged to the fixed base 200, and their overall cross-section is semi-circular. The rotation axes of the pair of arc-shaped plates 210 are perpendicular to each other and lie in the same plane. The pair of arc-shaped plates 210 are arranged intersectingly and slidingly fitted. A cross hole 211 is provided along the length of the middle of each pair of arc-shaped plates 210. A locking block 220 is slidably engaged at the intersection of the cross holes 211 of the pair of arc-shaped plates 210. The arc-shaped plates 210 can be made of high-carbon steel or alloy steel plates, and the plate thickness and curvature are determined by the design load and the member load. The hinge joint can adopt a pin structure with lubrication and maintenance holes and be equipped with a retaining ring to ensure the reliability of long-term reciprocating rotation.

[0035] The contact surfaces of the two intersecting and slidingly fitted arc-shaped plates 210 can be fitted with low-friction material shims or inlaid bushings to reduce wear and improve adjustment smoothness. Meanwhile, machining tolerances are provided at the intersecting holes 211 to allow the locking block 220 to slide without significant clearance, balancing adjustability and angular stability. The cross-section of the locking block 220 and the intersecting holes 211 of the arc-shaped plates 210 form a sliding fit, allowing for different fit tolerances to be selected depending on whether fine-tuning is required on-site. The surface of the locking block 220 can be hardened to extend its service life.

[0036] The fixing cylinder 240 is welded to the snap-fit ​​block 220. The fixing cylinder 240 has multiple elongated welding holes 241 along its circumference. The fixing cylinder 240 is used to insert and install rods, and can be welded to the rods using the welding holes 241. The diameter and wall thickness of the fixing cylinder 240 should match the outer diameter and stress level of the rod to be connected. In different embodiments, the interior of the fixing cylinder 240 can be designed as a stepped connection or a shape with a locating key to prevent relative rotation of the rod under shear conditions.

[0037] The circumferential welding hole 241 not only facilitates the reliable connection of the rod to the fixed cylinder 240 by spot welding or continuous welding on site, but can also be used to fix temporary positioning fixtures, which is convenient for alignment and correction during installation. In areas where butt welding is restricted, bolt through holes or embedded welding plates can be reserved as alternative connection methods.

[0038] Reference Figure 4 and Figure 5 As shown, the positioning component 230 includes a rod 231, a movable plate 232, and a driving component 233. A pair of arc-shaped plates 210 each have multiple insertion holes 212 along their arc-shaped circumference (length direction). The rod 231 is fixedly mounted on the movable plate 232 and is used to simultaneously insert into the locking block 220 and the insertion holes 212. The driving component 233 drives the movable plate 232 to move closer to or further away from the locking block 220 and fix it to the moved position. The movable plate 232 can be a thick plate or a short-rib reinforced plate structure to ensure that the plate does not deform excessively when the rod 231 is under stress.

[0039] Reference Figure 5 As shown, the driving component 233 includes a sleeve 2331, an adjusting screw 2332, and an adjusting nut 2333. The sleeve 2331 is fixedly mounted on the moving plate 232. One end of the adjusting screw 2332 is ball-jointed on the fixed base 200, and the other end is coaxially slidably inserted into the sleeve 2331. The adjusting nut 2333 is threaded onto the adjusting screw 2332 and abuts against the end of the sleeve 2331. Thus, when the locking block 220 moves with a pair of arc-shaped plates 210, the ball joint of the adjusting screw 2332 on the fixed base 200 allows it to rotate and adapt to various angles. By using the adjusting nut 2333 to press against the sleeve 2331, the insertion rod 231 on the moving plate 232 is inserted into the insertion hole 212, thus achieving stable fixation.

[0040] The adjusting screw 2332 can be a high-strength threaded rod with anti-loosening washers or elastic nuts. The ball joint end can be a ball head with a sealing ring to balance rotational flexibility and protective performance. An anti-wear layer can be provided on the inner wall of the sleeve 2331 to reduce friction between the adjusting screw 2332 and the sleeve 2331, extending service life. The stroke and lead of the adjusting nut 2333 should match the displacement range of the moving plate 232. If necessary, a scale can be set on the outside of the sleeve 2331 for accurate recording and repeated installation on site. This drive scheme can achieve a wide range of angle adaptation and facilitates rigid locking after adjustment by tightening the adjusting nut 2333, balancing adjustment convenience and node stability.

[0041] As an optional embodiment, four insertion rods 231 are provided and located at the four corners of the movable plate 232. Insertion holes 212 are provided on both sides of the cross holes 211 of each pair of arc-shaped plates 210 to correspond to the insertion and limiting of the four insertion rods 231, thus providing a more stable fixation. The four-point limiting arrangement significantly improves the constraint capability of the locking block 220 in the three-dimensional direction, avoiding deflection or local loosening problems that occur during single-point positioning. The spacing and distribution of the insertion rods 231 should be optimized in conjunction with the size of the locking block 220 and the force-bearing surface of the fixed cylinder 240 to ensure uniform load transmission.

[0042] Optionally, the end of the insertion rod 231 may be designed with a ball head or a guide cone to automatically guide during insertion and reduce wear on the insertion hole 212.

[0043] Reference Figure 1 and Figure 2 As shown, the base 100 is provided with multiple adjusting seats 300 along its outer periphery. Each adjusting seat 300 has a limiting groove 310. A limiting plate 320 is installed in the limiting groove 310. A locking member 330 is provided on the adjusting seat 300. The locking member 330 is used to fix the position of the limiting plate 320 in the limiting groove 310. An eccentric rod 340 is provided at the center position of the offset of the limiting plate 320. The fixed seat 200 is fixedly welded to the eccentric rod 340.

[0044] The limiting groove 310 has a regular polygonal cross-section, such as a decagon or a 12-sided polygon. This allows the eccentric rod 340 and the fixed seat 200 to be adjusted by moving the limiting plate 320 out of the limiting groove 310, rotating it a certain angle, and then inserting it back into the limiting groove 310. This adapts to changes in the angle and height of the rod to a certain extent. The multi-faceted cross-section design of the limiting groove 310 and the limiting plate 320 provides discrete but reliable directional positioning options, suitable for use in large-angle stepped adjustments. The mating surfaces of the limiting plate 320 and the limiting groove 310 can be treated with wear-resistant materials to improve reliability after repeated adjustments.

[0045] The design of the eccentric rod 340 allows for fine-tuning of the fixed base 200 in both radial and vertical directions, thus resolving eccentricity or misalignment issues caused by manufacturing or on-site installation errors. The connection between the eccentric rod 340 and the fixed base 200 should utilize high-strength fasteners capable of withstanding shear forces and bending moments. For ease of on-site adjustment, graduation marks or pointers can be provided on the limiting plate 320 in conjunction with the graduation ring on the base 100 to quickly locate the desired eccentricity and angle.

[0046] Reference Figure 2 As shown, the locking component 330 includes a locking plate 331, on which a clearance hole 332 is provided for the eccentric rod 340 to pass. The locking plate 331 is fixedly connected to the fixing base 200 by a locking bolt 333, and presses the limiting plate 320 against the limiting groove 310. Of course, in other embodiments, a structure such as a buckle can be used to limit and fix the limiting plate 320.

[0047] The locking plate 331 should preferably be made of steel plate with sufficient rigidity, and its thickness and bolt size should match the load-bearing requirements of the node. The machining dimensions of the clearance hole 332 should ensure that the interference of the eccentric rod 340 is minimized during the adjustment process, while providing sufficient contact surface for locking. The locking bolt 333 can be a high-strength self-locking bolt with anti-loosening measures. An optional snap-fit ​​structure is suitable for applications requiring frequent adjustments. The snap-fit ​​should be designed to be fatigue-resistant and easy to operate manually, and should not affect the force transmission of the node after locking.

[0048] As an optional embodiment, an extension rod 350 connects the adjusting seat 300 and the base 100, thereby extending the length between the adjusting seat 300 and the base 100 and increasing the installation space. The extension rod 350 can be designed as an adjustable-length telescopic rod or a threaded tie rod. The telescopic structure can use an inner and outer tube fit with a locking collar to allow for quick adjustment of the installation spacing on-site according to the relative positions of the rods. The cross-section and connecting ends of the extension rod 350 should ensure that excessive bending deformation does not occur under stress. If necessary, lateral supports or stiffening ribs should be provided to improve rigidity.

[0049] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steel structure space frame connection node with adjustable member angles, characterized in that, include: A base (100) is provided with a plurality of fixed seats (200) along its outer periphery, wherein: A pair of arc-shaped plates (210) are provided on the fixed base (200). Both ends of the pair of arc-shaped plates (210) are hinged to the fixed base (200). The rotation axes of the pair of arc-shaped plates (210) are perpendicular to each other and are in the same plane. The pair of arc-shaped plates (210) are intersected and slidably fitted. The middle part of the pair of arc-shaped plates (210) is provided with a cross hole (211) along the length direction. A locking block (220) is slidably engaged at the intersection of the cross holes (211) of the pair of arc-shaped plates (210). Positioning element (230), the positioning element (230) is used to fix the position of the snap-fit ​​block (220) at the intersection of the arc plate (210); A fixing cylinder (240) is fixedly mounted on the snap-fit ​​block (220) and used for inserting and installing rods.

2. The steel structure space frame connection node with adjustable member angle according to claim 1, characterized in that, The positioning component (230) includes a rod (231), a movable plate (232), and a driving component (233). Each pair of arc-shaped plates (210) has multiple insertion holes (212) along its length. The rod (231) is fixedly mounted on the movable plate (232) and is used to simultaneously insert into the snap-fit ​​block (220) and the insertion hole (212). The driving component (233) is used to drive the movable plate (232) to move closer to or further away from the snap-fit ​​block (220) and fix it to the moved position.

3. The steel structure space frame connection node with adjustable member angle according to claim 2, characterized in that, The driving component (233) includes a sleeve (2331), an adjusting screw (2332), and an adjusting nut (2333). The sleeve (2331) is fixedly mounted on the moving plate (232). One end of the adjusting screw (2332) is ball-jointed on the fixed base (200), and the other end is coaxially slidably inserted into the sleeve (2331). The adjusting nut (2333) is threaded onto the adjusting screw (2332) and abuts against the end of the sleeve (2331).

4. The steel structure space frame connection node with adjustable member angle according to claim 2, characterized in that, The insertion rods (231) are provided in four positions and located at the four corners of the movable plate (232). Each pair of arc plates (210) has insertion holes (212) on both sides of the cross hole (211) to accommodate the insertion of the four insertion rods (231).

5. The steel structure space frame connection node with adjustable member angle according to claim 1, characterized in that, The base (100) is provided with a plurality of adjusting seats (300) along its outer periphery. Each adjusting seat (300) has a limiting groove (310). A limiting plate (320) is provided in the limiting groove (310). A locking member (330) is provided on the adjusting seat (300). The locking member (330) is used to fix the position of the limiting plate (320) in the limiting groove (310). An eccentric rod (340) is provided at the offset of the center position of the limiting plate (320). The fixing seat (200) is fixedly mounted on the eccentric rod (340).

6. The steel structure space frame connection node with adjustable member angle according to claim 5, characterized in that, The cross-section of the limiting groove (310) is a regular polygon.

7. The steel structure space frame connection node with adjustable member angle according to claim 6, characterized in that, The locking component (330) includes a locking plate (331), on which a clearance hole (332) is provided for the eccentric rod (340) to pass. The locking plate (331) is fixedly connected to the fixed base (200) by a locking bolt (333) and presses the limiting plate (320) against the limiting groove (310).

8. The steel structure space frame connection node with adjustable member angle according to claim 5, characterized in that, An extension rod (350) is connected between the adjusting seat (300) and the base (100).

9. The steel structure space frame connection node with adjustable member angle according to claim 1, characterized in that, The fixed cylinder (240) has multiple welding holes (241) along its circumference.

10. The steel structure space frame connection node with adjustable member angle according to claim 1, characterized in that, The base (100) is spherically shaped.

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