Assembly type replaceable core hub and pin shaft combined joint

Abstract

The utility model relates to an assembly type replaceable core hub and pin shaft combined joint which comprises a core hub, a pin shaft assembly and a rod piece, and the core hub is connected with the rod piece through the pin shaft assembly. The core hub comprises a hollow cylinder, an upper end face cover plate and a lower end face cover plate, the pin shaft assembly comprises a sealing plate, an upper flange plate, a lower flange plate, a core hub end lug plate, a component end lug plate, a first pin shaft and a second pin shaft, the sealing plate is connected with the end of the rod piece, the core hub end lug plate is arranged on the outer wall of the hollow cylinder, the component end lug plate is arranged on the sealing plate, the core hub end lug plate and the component end lug plate are connected through the first pin shaft, and the second pin shaft is arranged on the outer wall of the hollow cylinder. The upper flange plate and the lower flange plate are oppositely arranged, one side of the upper flange plate and one side of the lower flange plate are connected with the sealing plate, and the other side of the upper flange plate and the other side of the lower flange plate are connected with the upper end face cover plate and the lower end face cover plate through the second pin shafts correspondingly. The joint is simple in structure, capable of being quickly assembled on a construction site, easy and convenient to operate, large in bending rigidity and capable of being replaced in the later period.

Description

Technical Field

[0001] The utility model belongs to the technical field of building structure engineering, and particularly relates to an assembled replaceable core hub and pin combination node for a grid structure. Background Art

[0002] A space grid structure is a space structure formed by connecting rods and components arranged according to certain rules through nodes. With its beautiful shape, high efficiency, and excellent economic benefits, the space grid structure is widely used in stadiums and exhibition buildings. After the founding of the People's Republic of China, a large number of space grid structures have been built taking various large-scale sports meetings and conferences and exhibitions as opportunities.

[0003] At present, for space grid structures, the commonly used nodes can be divided into two types: welded nodes and assembled replaceable nodes. Although the nodes formed by welding belong to rigid connection nodes, the on-site welding amount is large, the construction is cumbersome, and there are large residual stresses at the welds, affecting the mechanical properties of the nodes. Although the previous assembled replaceable nodes avoid welding, they often have insufficient out-of-plane stiffness of the nodes, and the pre-tightening force of the bolts needs to be controlled during the construction process, and the process is relatively complex.

[0004] For example, a new type of assembly node disclosed in the Chinese invention patent CN116950220A includes: a node prism barrel and a plurality of rods. The rods are radially distributed around the axis of the node prism barrel. The side wall of the node prism barrel forms a plurality of connection surfaces along its circumferential direction. A shear pin radially extending is fixed in the middle of the connection surface. An end plate fitting the connection surface is arranged at the end of the rod. A pin hole for inserting the shear pin is arranged in the middle of the end plate. The end plate is provided with an upper ear plate part and a lower ear plate part radially extending along the rod. The upper ear plate part and the lower ear plate part are fixed to the connection surface through bolts. However, this scheme requires on-site tightening of the bolts, and the pre-tightening force needs to be controlled, and the construction process is relatively complex. At the same time, the construction quality of the bolts cannot be guaranteed, and there is sometimes a phenomenon of "false tightening". Moreover, the sealing plate in this scheme is directly welded to the rod and directly connected to the core barrel. The sealing plate is easily damaged and cannot be replaced, and the life of the node is short. Summary of the Utility Model

[0005] In order to at least solve one of the problems existing in the prior art, the utility model provides an assembled replaceable core hub and pin combination node. The connection between the core hub and the component is realized through a pin assembly. At the construction site, the worker only needs to align the holes and insert the pin to complete the node assembly, which is simple in operation and does not require control of the pre-tightening force.

[0006] In order to achieve the purpose of the utility model, the utility model provides an assembled replaceable core hub and pin combination node, which includes a core hub, a pin assembly, and a rod. The core hub is connected to the rod through the pin assembly; wherein,

[0007] The core hub includes a hollow cylinder, an upper end face cover plate and a lower end face cover plate respectively arranged on the upper and lower end faces of the hollow cylinder;

[0008] The pin shaft assembly includes a sealing plate, an upper flange plate, a lower flange plate, a core hub end ear plate, a member end ear plate, a first pin shaft and a second pin shaft. The sealing plate is connected to the end of the rod. The core hub end ear plate is arranged on the outer wall of the hollow cylinder. The member end ear plate is arranged on the sealing plate. And the core hub end ear plate and the member end ear plate are connected by the first pin shaft. The upper flange plate and the lower flange plate are arranged oppositely. One side of the upper flange plate and the lower flange plate is connected to the sealing plate, and the other side is respectively connected to the upper end face cover plate and the lower end face cover plate by the second pin shaft.

[0009] Furthermore, a middle partition plate is arranged on the inner side wall of the hollow cylinder.

[0010] Furthermore, the middle partition plate is welded to the inner side wall of the hollow cylinder.

[0011] Furthermore, the cross-sectional shape of the hollow cylinder is a regular polygon.

[0012] Furthermore, the upper end face cover plate and the lower end face cover plate are both welded to the hollow cylinder.

[0013] Furthermore, the upper flange plate is connected to the upper end face cover plate by bolts; the lower flange plate is connected to the lower end face cover plate by bolts.

[0014] Furthermore, the member end ear plate is connected to the sealing plate by angle steel stiffeners and bolts.

[0015] Furthermore, the sealing plate is welded to the end of the rod.

[0016] Furthermore, the material of the second pin shaft is a high-ductility and high-energy-dissipation material, which can play a good role in energy dissipation and protect the main body from being damaged. Preferably, the second pin shaft can be made of mild steel.

[0017] Furthermore, the core hub end ear plate includes an intermediate core hub end ear plate, a left core hub end ear plate and a right core hub end ear plate located on both sides of the intermediate core hub end ear plate. The member end ear plate includes a left member end ear plate and a right member end ear plate. The first pin shaft sequentially passes through the left core hub end ear plate, the left member end ear plate, the intermediate core hub end ear plate, the right core hub end ear plate and the right member end ear plate to realize the connection between the core hub end ear plate and the member end ear plate, and connect multiple ear plates into one body.

[0018] Preferably, the middle core hub end ear plate is connected to the hollow cylinder by welding, and the left core hub end ear plate and the right core hub end ear plate are detachably connected to the hollow cylinder, such as being connected to the hollow cylinder by bolts through L-shaped angle steel stiffeners.

[0019] Preferably, the member end ear plate is detachably connected to the sealing plate, such as being connected to the sealing plate by bolts through L-shaped angle steel stiffeners.

[0020] Further, multiple rods can be provided, and the multiple rods are connected around the core hub through corresponding pin shaft assemblies.

[0021] Preferably, there are 6 rods arranged around the core hub.

[0022] Compared with the prior art, the utility model can at least achieve the following beneficial effects:

[0023] (1) The utility model can connect the parts of the core hub in advance to form an integral body, assemble the pin shaft assemblies, and only need to connect the rods and the nodes with pins at the construction site, which can effectively reduce the welding amount and construction difficulty on site.

[0024] (2) The utility model is connected by upper and lower cover plates, which improves the flexural stiffness of the node and is superior to the traditional assembled node.

[0025] (3) For the combined node provided by the utility model, the force is reasonable and clear. The vertical load of the structure is borne by the pins at the ear plates, and the upper and lower flange plates only transfer the bending moment and provide rotational stiffness; moreover, the pin connection method is convenient for replacing the pins and ear plates in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings. It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Among them:

[0027] Figure 1 FIG. is a schematic diagram of the overall structure of an assembled replaceable core hub and pin combination node provided by an embodiment of the utility model.

[0028] Figure 2 FIG. is an exploded view of an assembled replaceable core hub and pin combination node provided by an embodiment of the utility model.

[0029] Figure 3 This is a schematic diagram of the unconnected front node in the embodiment of the present utility model.

[0030] Figure 4 This is a schematic diagram of the member to be connected and its mounting parts in the embodiment of the present utility model.

[0031] Figure 5 This is a schematic diagram of the completion of the connection of a single member in the embodiment of the present utility model.

[0032] Explanation of reference numerals:

[0033] 1 - Hollow cylinder; 2 - Middle partition board; 3 - Upper end face cover plate; 4 - Lower end face cover plate;

[0034] 5 - Upper flange plate; 6 - Lower flange plate; 7 - Left and right side core hub end ear plates; 8 - Middle core hub end ear; 9 - Member end ear plate; 10 - L-shaped angle steel stiffener; 11 - First pin shaft; 12 - Sealing plate; 13 - Second pin shaft; 14 - Bolt; 15 - Rod. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts are within the scope of protection of the present utility model.

[0036] It should also be noted that the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, commodity or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, commodity or device. Without further limitation, the element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, commodity or device comprising the element.

[0037] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and do not specifically refer to the order or sequence. Nor are they used to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0038] In the description of the present utility model, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0039] Please refer to Figures 1 to 5 , a prefabricated replaceable core hub and pin combination node provided by the present utility model includes a core hub, a pin assembly, and a rod member. The core hub is fixedly connected to the rod member through the pin assembly. There can be multiple rod members 15, which are respectively arranged around the core hub through the pin assembly.

[0040] As Figure 2 shown, the core hub includes a hollow cylinder 1, end face covers, and a middle partition 2; the end face covers are divided into upper and lower ones, defined as an upper end face cover 3 and a lower end face cover 4, and the upper end face cover 3 and the lower end face cover 4 are respectively fixedly connected to the upper end face and the lower end face of the hollow cylinder 1; the middle partition 2 is fixedly connected to the inner wall of the hollow cylinder 1. The hollow of the hollow cylinder 1 can not only facilitate the subsequent installation of bolts 14, but also reduce the consumption of steel, while reducing the weight of the node, and is more convenient for transportation and installation. The setting of the middle partition 2 can serve as a support for the hollow cylinder 1, improve the bearing capacity and stiffness of the hollow cylinder 1, and prevent the side wall of the hollow cylinder 1 from deforming too much.

[0041] In some embodiments of the present utility model, as Figure 3 shown, both the upper end face cover 3 and the lower end face cover 4 are welded to the hollow cylinder 1, and the middle partition 2 is welded to the hollow cylinder 1.

[0042] In some embodiments of the present utility model, the cross-sectional shapes of the upper end face cover plate 3 and the lower end face cover plate 4 are both circular.

[0043] In some embodiments of the present utility model, the cross-sectional shape of the hollow cylinder 1 is a regular polygon. Preferably, a prismatic shape as shown in the figure is adopted, that is, the hollow cylinder 1 is a hollow prismatic cylinder, which can facilitate the connection of the hollow cylinder 1 with subsequent L-shaped angle steel stiffeners, core hub end ear plates, etc.

[0044] The pin shaft assembly includes a core hub end ear plate, a member end ear plate, a first pin shaft 11, a second pin shaft 13, an L-shaped angle steel stiffener, an upper flange plate 5, a lower flange plate 6, and a sealing plate 12. The sealing plate 12 is connected to the end of one end of the rod member 15. The core hub end ear plate is arranged on the outer wall of the hollow cylinder 1. The member end ear plate 9 is detachably arranged on the sealing plate 12, and the core hub end ear plate and the member end ear plate 9 are connected by the first pin shaft 11. The upper flange plate 5 and the lower flange plate 6 are arranged oppositely. One side of the upper flange plate 5 and the lower flange plate 6 is connected to the sealing plate 12, and the other side is respectively connected to the upper end face cover plate 3 and the lower end face cover plate 4 through the second pin shaft 13.

[0045] In some embodiments of the present utility model, the core hub end ear plate includes an intermediate core hub end ear plate 8 and left and right core hub end ear plates 7 located on both sides of the intermediate core hub end ear plate 8. The left and right core hub end ear plates 7 are defined as the left core hub end ear plate and the right core hub end ear plate. The intermediate core hub end ear plate 8 is connected to the outer cylinder wall of the hollow cylinder 1 by welding. The left core hub end ear plate and the right core hub end ear plate located on the left and right sides of the intermediate core hub end ear plate 8 are connected to the outer cylinder wall of the hollow cylinder 1 through the L-shaped angle steel stiffener 10 by bolts 14. There are intervals between the left core hub end ear plate and the intermediate core hub end ear plate 8, and between the intermediate core hub end ear plate 8 and the right core hub end ear plate. As Figure 4 shown, the member end ear plate 9 is connected to the sealing plate 12 through another L-shaped angle steel stiffener 10 by bolts 14, and the sealing plate 12 is welded to the rod member 15. Specifically, there are two member end ear plates 9, including a left member end ear plate and a right member end ear plate. The left member end ear plate can be inserted into the interval between the left core hub end ear plate and the intermediate core hub end ear plate 8, and the right member end ear plate can be inserted into the interval between the intermediate core hub end ear plate 8 and the right core hub end ear plate.

[0046] As Figure 5As shown, during the on-site construction installation, the upper flange plate 5 is connected to the upper end face cover plate 3 through the second pin shaft 13; the lower flange plate 6 is connected to the lower end face cover plate 4 through the second pin shaft 13. The first pin shaft 11 sequentially passes through the left core hub end ear plate, the left member end ear plate, the middle core hub end ear plate 8, the right core hub end ear plate, and the right member end ear plate, thereby connecting multiple ear plates, and a single member 15 can complete the connection to the node. The installation of other members 15 repeats the above method. In some embodiments of the present invention, 6 members 15 are provided, and the node diagram is as Figure 1 shown.

[0047] In some embodiments of the present invention, the second pin shaft 13 is selected to be made of high-ductility and high-energy-dissipation materials, such as mild steel, so as to achieve the functions of protecting the main body and post-earthquake repair.

[0048] A prefabricated replaceable core hub and pin shaft combined node provided by the foregoing embodiments of the present invention does not require control of the bolt pre-tightening force during on-site construction. Only by inserting the pin shaft can the member be connected to the core hub, and the operation is simple and convenient; the sealing plate is not directly connected to the core hub, but by setting ear plates, the upper end face cover plate, the lower end face cover plate, the upper flange plate, and the lower flange plate. The upper and lower flange plates are connected to the upper and lower end face cover plates through the second pin shaft. The core hub end ear plate and the member end ear plate are connected through the first pin shaft. The bending moment is transmitted through the upper and lower end face cover plates, and the shear force is transmitted through the ear plates. The damage is mainly concentrated on the second pin shaft (rather than the sealing plate). Moreover, in the present invention, through pin shaft connection, the pin shaft is more convenient to disassemble and install than the bolt, and it is convenient to replace when damaged, so that the service life of this combined node can be effectively extended.

[0049] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0050] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembled replaceable combination node of a core hub and a pin shaft, characterized in that It includes a core hub, a pin shaft assembly and a rod member, and the core hub is connected to the rod member through the pin shaft assembly; wherein, the core hub includes a hollow cylinder, an upper end face cover plate and a lower end face cover plate respectively arranged on the upper and lower end faces of the hollow cylinder; the pin shaft assembly includes a sealing plate, an upper flange plate, a lower flange plate, a core hub end ear plate, a member end ear plate, a first pin shaft and a second pin shaft. The sealing plate is connected to the end of the rod member. The core hub end ear plate is arranged on the outer wall of the hollow cylinder. The member end ear plate is arranged on the sealing plate, and the core hub end ear plate and the member end ear plate are connected through the first pin shaft. The upper flange plate and the lower flange plate are arranged oppositely. One side of the upper flange plate and the lower flange plate is connected to the sealing plate, and the other side is respectively connected to the upper end face cover plate and the lower end face cover plate through the second pin shaft.

2. The assembled replaceable combination node of core hub and pin shaft according to claim 1, characterized in that, A middle partition plate is arranged on the inner side wall of the hollow cylinder.

3. The assembled replaceable combination node of core hub and pin shaft according to claim 2, characterized in that The middle partition plate is welded to the inner side wall of the hollow cylinder.

4. The assembled replaceable combination joint of core hub and pin shaft according to claim 1, characterized in that, The cross-sectional shape of the hollow cylinder is a regular polygon.

5. A prefabricated replaceable combination node of a core hub and a pin shaft according to claim 1, characterized in that, Both the upper end face cover plate and the lower end face cover plate are welded to the hollow cylinder.

6. The assembled replaceable core hub and pin combination joint according to claim 1, characterized in that, The member end ear plate is connected to the sealing plate through an angle steel stiffener and bolts.

7. A prefabricated replaceable combination node of a core hub and a pin shaft according to claim 1, characterized in that, The sealing plate is welded to the end of the rod member.

8. The assembled replaceable combination node of core hub and pin shaft according to claim 1, characterized in that, The material of the second pin shaft is a high ductility and high energy dissipation material.

9. The assembled replaceable core hub and pin combination joint according to claim 1, characterized in that, The core hub end ear plate includes a middle core hub end ear plate, a left core hub end ear plate and a right core hub end ear plate located on both sides of the middle core hub end ear plate. The member end ear plate includes a left member end ear plate and a right member end ear plate. The first pin shaft sequentially passes through the left core hub end ear plate, the left member end ear plate, the middle core hub end ear plate, the right core hub end ear plate and the right member end ear plate to realize the connection between the core hub end ear plate and the member end ear plate.

10. A prefabricated replaceable combination node of a core hub and a pin shaft according to any one of claims 1-9, characterized in that, Multiple rod members can be provided, and the multiple rod members are connected around the core hub through corresponding pin shaft assemblies.

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