Steel structure riveting sliding node

Abstract

The application discloses a steel structure riveting sliding node. The pull rivet rod is composed of two sections, including a small-diameter rod one and a large-diameter rod two, and the connecting part of the rod one and the rod two forms a step; the pull rivet rod one section sleeve plate is limited by the step formed by the rod one and the rod two, the rod two section passes through the sliding part and the fixing part; the pull rivet ring groove section is fixed by extrusion riveting with the sleeve ring; the limited sliding mechanism is arranged between the sleeve plate and the sliding part and between the sliding part and the fixing part; the limited sliding mechanism is composed of the limiting gasket arranged on the lower surface of the sleeve plate and the upper surface of the fixing part, the high-molecular polyethylene connecting ring and the mirror surface stainless steel friction pad block on the upper and lower surfaces of the sliding part; the steel structure riveting sliding node has long service life and ultra-low friction force, and will not be loosened and fallen off in the design load range after installation, can realize the load sliding of the sliding part and the fixing part, changes the rigid connection into the flexible connection, releases the damage load and improves the survival ability.

Description

Technical Field

[0001] This invention belongs to the field of steel structure design technology, and relates to the design of steel connection structures, specifically a long-life, ultra-low friction steel structure riveting sliding node structure design. Background Technology

[0002] Currently, steel structure connection nodes are mainly frictional and bearing types, both designed to withstand shear loads and are rigid connections. However, under special conditions such as earthquakes and non-continuous structural loading, it is desirable for steel structure connection nodes to have a certain sliding effect, transforming rigid connections into flexible connections, effectively releasing destructive loads, improving the survivability of connection nodes under impact load conditions, and making the connection more effective. Summary of the Invention

[0003] This invention discloses a steel structure riveting sliding node to address the shortcomings of existing technologies. The purpose of this invention is to provide a long-life, ultra-low friction riveting sliding node structure.

[0004] This invention is achieved through the following technical solution: a sliding joint for riveting steel structures, the steel structure comprising: a sliding member and a fixing member of the connected components, and a rivet pin and a collar constituting the riveting; characterized in that:

[0005] The rivet pin consists of a header, a smooth rod, a ring groove, and a rivet tail arranged in sequence. The smooth rod is composed of two sections: a small-diameter smooth rod one and a large-diameter smooth rod two. The connection between smooth rod one and smooth rod two forms a step. The first section of the rivet pin smooth rod is fitted with a pad, which is limited by the step formed by smooth rod one and smooth rod two. The second section of the smooth rod passes through the sliding part and the fixing part. The ring groove section of the rivet pin is pressed and riveted to the collar for fixation.

[0006] Limited sliding mechanisms are provided between the pad and the sliding component, and between the sliding component and the fixed component. The limited sliding mechanism consists of two concentric limiting washers fixed around the riveting hole on the lower surface of the pad and the upper surface of the fixed component. A high-molecular-weight polyethylene connecting ring with a thickness greater than that of the limiting washers is fixed between the two limiting washers. Mirror-finished stainless steel friction pads are fixed on the upper and lower surfaces of the sliding component. The surface of the high-molecular-weight polyethylene connecting ring of the pad slides against the surface of the mirror-finished stainless steel friction pad on the upper surface of the sliding component, and the surface of the high-molecular-weight polyethylene connecting ring of the fixed component slides against the surface of the mirror-finished stainless steel friction pad on the lower surface of the sliding component.

[0007] Furthermore, the diameter of the rivet hole in the pad is larger than the diameter of the first guide rod and smaller than the diameter of the second guide rod, and it is fitted with the first guide rod with a clearance to form a stepped limiting and fixing mechanism between the first guide rod and the second guide rod; the rivet pin tooth profile is an independent ring groove structure, and the rivet tail is a single groove structure.

[0008] Furthermore, the fastener of the connecting component is provided with a rivet hole that mates with the second guide rod and is fixed at the cap.

[0009] Furthermore, the high-molecular-weight polyethylene connecting rings are made of wear-resistant ultra-high molecular weight polymer material. The designed wear thickness is determined based on the linear wear rate and service life of the material, so that each ultra-high molecular weight polyethylene connecting ring can slide freely on the corresponding mirror-finish stainless steel friction pad within the designed service life.

[0010] Furthermore, the length of the second rivet rod is greater than the total thickness of the upper and lower high molecular weight polyethylene connecting rings, upper and lower mirror stainless steel friction pads, sliding parts, and fixing parts, so that there is no clamping force between the rivets after installation, ensuring that the pressure between each high molecular weight polyethylene connecting ring and the corresponding mirror stainless steel friction pad comes only from the weight of the node itself and the sliding friction resistance is minimized.

[0011] Furthermore, the limiting washer is fixed to the pad or fastener by welding or countersunk bolts; the mirror stainless steel friction pad is fixed by welding or countersunk bolts.

[0012] Furthermore, the size of the central opening of the sliding component is designed according to the maximum sliding amount of the sliding node, so that the inner wall of the sliding component does not contact the smooth rod of the rivet pin when the sliding component slides.

[0013] Furthermore, in the two concentric limiting washers, the outer diameter of the inner limiting washer is smaller than the inner diameter of the corresponding molecular polyethylene connecting ring, and the inner diameter of the outer limiting washer is larger than the outer diameter of the corresponding molecular polyethylene connecting ring.

[0014] Furthermore, the contact surface between the high molecular weight polyethylene connecting ring and the mirror stainless steel friction pad is coated with grease, and the coefficient of friction is ≤0.01.

[0015] Furthermore, the inner and outer diameters of the mirror stainless steel friction pad are determined based on the maximum sliding amount of the sliding node and the maximum sliding amount of the corresponding high molecular weight polyethylene connecting ring, so that after the mirror stainless steel friction pad is fixed, the high molecular weight polyethylene connecting ring slides within the corresponding mirror stainless steel friction pad.

[0016] This invention relates to a steel structure riveting sliding joint. By designing a finite sliding mechanism, it forms a sliding joint with a long service life and ultra-low friction. After installation, it will not experience loosening or detachment within the design load range, and can achieve load-bearing sliding between the sliding and fixed parts within a certain range. The friction coefficient between the moving plate and the fixed plate is ≤0.01. This joint can transform a rigid connection into a flexible connection, effectively releasing destructive loads and improving the survivability of the connection joint under impact load conditions. The sliding joint of this invention can be accurately calculated based on the linear wear rate and service life of the material, ensuring safe use within the design service life.

[0017] This invention provides a steel structure riveting sliding joint with a long service life, ultra-low friction coefficient of the contact surface, and never falling off, for use in the field of steel structures. This joint can transform rigid connections into flexible connections, effectively release destructive loads, improve the survivability of the connection joint under impact load conditions, make the connection more effective, improve the connection safety of steel structures under load conditions, and enhance stability and reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cross-section of the riveted sliding node of the steel structure of the present invention.

[0019] In the diagram, 1 is a rivet pin, 2 is a collar, 3 is a pad, 4 is a limiting washer one, 5 is a high molecular weight polyethylene connecting ring one, 6 is a limiting washer two, 7 is a mirror stainless steel friction pad one, 8 is a sliding part, 9 is a mirror stainless steel friction pad two, 10 is a limiting washer three, 11 is a high molecular weight polyethylene connecting ring two, 12 is a limiting washer four, and 13 is a fixing part. d1 is the diameter of the first polished rod, d2 is the diameter of the second polished rod, d3 is the diameter of the pad hole, d5 is the outer diameter of the first limiting washer, d6 is the inner diameter of the first polyethylene connecting ring, d7 is the outer diameter of the first polyethylene connecting ring, d8 is the inner diameter of the second limiting washer, d11 is the inner diameter of the first friction pad, d12 is the outer diameter of the first friction pad, d13 is the inner diameter of the second friction pad, d14 is the outer diameter of the second friction pad, d15 is the outer diameter of the third limiting washer, d16 is the inner diameter of the second polyethylene connecting ring, d17 is the outer diameter of the second polyethylene connecting ring, d18 is the inner diameter of the fourth limiting washer, and d19 is the inner diameter of the sliding part; L1 is the thickness of the limiting washer, L2 is the thickness of the polyethylene pad, L3 is the design wear thickness of the polyethylene pad, and L4 is the length of the second polished rod. Specific Implementation

[0020] The present invention will be further described below with reference to specific embodiments. These specific embodiments are further explanations of the principles of the present invention and are not intended to limit the present invention in any way. Any technology that is the same as or similar to the present invention does not exceed the scope of protection of the present invention.

[0021] As shown in the figure, this embodiment of a long-life, ultra-low friction steel structure sliding node includes a rivet pin 1, a collar 2, a pad 3, a limiting washer 4, an ultra-high molecular weight polyethylene connecting ring 5, a limiting washer 2 6, a mirror stainless steel friction pad 7, a sliding component 8, a mirror stainless steel friction pad 2 9, a limiting washer 3 10, an ultra-high molecular weight polyethylene connecting ring 2 11, a limiting washer 4 12, and a fixing component 13, etc.

[0022] In this embodiment, the rivet pin 1 in a long-life, ultra-low friction steel structure sliding joint adopts a variable diameter structure with annular groove tooth profile design. The rod part consists of a smooth rod one and a smooth rod two, with two different diameters d1 and d2. The opening diameter d3 of the pad plate 3 is larger than the diameter d1 of the smooth rod one and smaller than the diameter d2 of the smooth rod two. The pad plate 3 is directly fixed at the step formed by the two diameters d1 and d2. The tooth profile of the rivet pin 1 is composed of an independent annular groove structure. After installation with the collar 2, it will not loosen or fall off within the design load range.

[0023] In this embodiment, the thickness L1 of the limiting washers 4, 6, 10, and 12 in a long-life, ultra-low friction steel structure sliding joint is less than the thickness L2 of the ultra-high molecular weight polyethylene connecting ring 5 and 11, ensuring that the ultra-high molecular weight polyethylene connecting ring 5 and 11 can slide back and forth on the mirror stainless steel friction pad 7 and 9 without obstruction.

[0024] In this embodiment, the ultra-high molecular weight polyethylene (UHMWPE) connecting ring in a long-life, ultra-low friction steel structure sliding node is made of wear-resistant UHMWPE material. Its designed wear thickness L3 needs to be accurately calculated based on the linear wear rate and service life of the material to ensure that the UHMWPE connecting ring 15 and UHMWPE connecting ring 21 slide back and forth on the mirror stainless steel friction pad 17 and mirror stainless steel friction pad 29 within the designed service life.

[0025] In this embodiment, the length L4 of the rivet pin 1 smooth rod 2 in a long-life, ultra-low friction steel structure sliding node is greater than the total thickness of the ultra-high molecular weight polyethylene connecting ring 11, ultra-high molecular weight polyethylene connecting ring 21, mirror stainless steel friction pad 17, mirror stainless steel friction pad 29, sliding member 8, and fixing member 13. This ensures that there is no clamping force between the rivet pins 1 after installation, and that the pressure between the ultra-high molecular weight polyethylene connecting ring 11, ultra-high molecular weight polyethylene connecting ring 21, and mirror stainless steel friction pad 17 and mirror stainless steel friction pad 29 comes only from the node's own weight, minimizing sliding friction resistance and facilitating sliding between the node sliding member 8 and fixing member 13.

[0026] In this embodiment, the limiting washers 4, 6, 10, and 12 in a long-life, ultra-low friction steel structure sliding node can be fixed to the pad 3 or the fastener 13 by welding or by countersunk bolts, ensuring that there is no obstruction between the exposed surface of the limiting washers and the mirror stainless steel friction pad.

[0027] In this embodiment, the mirror stainless steel friction pad 7 and mirror stainless steel friction pad 9 in a long-life, ultra-low friction steel structure sliding joint can be fixed by welding or by countersunk bolts, ensuring that there is no obstruction to the friction between the mirror stainless steel friction pad and the exposed surface of the limiting washer.

[0028] In this embodiment, the size of the middle opening d19 of the sliding member 8 in a long-life, ultra-low friction steel structure sliding node needs to be designed according to the maximum sliding amount of the sliding node to ensure that the inner wall of the sliding member 8 will not contact the smooth rod of the rivet pin 1 when sliding back and forth, and to ensure that the back and forth sliding of the node meets the design requirements.

[0029] In this embodiment, the outer diameters d5 and d15 of the limiting washers 1-4 and 4-12 in a long-life, ultra-low friction steel structure sliding joint are smaller than the inner diameters d6 and d16 of the ultra-high molecular weight polyethylene (UHMWPE) connecting rings 1-5 and 2-11. The inner diameters d8 and d18 of the limiting washers 2-6 and 3-10 are larger than the outer diameters d7 and d17 of the UHMWPE connecting rings 1-5 and 2-11. These features serve a limiting function, fixing the UHMWPE connecting rings 1-5 and 2-11 within a certain range, allowing them to slide and rub against the surface of the mirror-finished stainless steel friction pad without slipping off the surface and causing damage to the UHMWPE connecting rings 1-5 and 2-11, thus affecting their service life.

[0030] In this embodiment, the contact surfaces of the ultra-high molecular weight polyethylene connecting ring 5, mirror stainless steel friction pad 7, mirror stainless steel friction pad 9, and ultra-high molecular weight polyethylene connecting ring 11 in a long-life, ultra-low friction steel structure sliding joint are coated with grease during installation, which greatly reduces the sliding force of the sliding joint and ensures that the coefficient of friction is ≤0.01.

[0031] In this embodiment, the inner diameters d11 and d13 and the outer diameters d12 and d14 of the mirror stainless steel friction pads 7 and 9 in a long-life, ultra-low friction steel structure sliding joint are determined based on the inner diameters d6 and d16 and the outer diameters d7 and d17 of the ultra-high molecular weight polyethylene connecting rings 5 ​​and 11 when the sliding joint has maximum slippage. This ensures that after the mirror stainless steel friction pads 7 and 9 are fixed, the ultra-high molecular weight polyethylene connecting rings 5 ​​and 11 will not slip off the surface of the mirror stainless steel friction pads during sliding friction, thus preventing damage to the ultra-high molecular weight polyethylene connecting rings 5 ​​and 11 and affecting their service life.

Claims

1. A riveted sliding joint for a steel structure, the steel structure comprising: The sliding and fixing parts of the connected components constitute the riveting pin and collar; characterized in that: The rivet pin consists of a header, a smooth rod, a ring groove, and a rivet tail arranged in sequence. The smooth rod is composed of two sections: a small-diameter smooth rod one and a large-diameter smooth rod two. The connection between smooth rod one and smooth rod two forms a step. The smooth rod section of smooth rod one is fitted with a pad and limited by the step formed by smooth rod one and smooth rod two. The smooth rod section of smooth rod two passes through the sliding part and the fixing part. The ring groove section of the rivet pin is pressed and riveted to the collar for fixation. Limited sliding mechanisms are provided between the pad and the sliding component, and between the sliding component and the fixed component. The limited sliding mechanism consists of two concentric limiting washers fixed around the riveting hole on the lower surface of the pad and the upper surface of the fixed component. A high-molecular-weight polyethylene connecting ring with a thickness greater than that of the limiting washers is fixed between the two limiting washers. Mirror-finished stainless steel friction pads are fixed on the upper and lower surfaces of the sliding component. The surface of the high-molecular-weight polyethylene connecting ring of the pad slides against the surface of the mirror-finished stainless steel friction pad on the upper surface of the sliding component, and the surface of the high-molecular-weight polyethylene connecting ring of the fixed component slides against the surface of the mirror-finished stainless steel friction pad on the lower surface of the sliding component.

2. The steel structure riveting sliding joint according to claim 1, characterized in that: The diameter of the rivet hole in the pad is larger than the diameter of the first guide rod and smaller than the diameter of the second guide rod, and it is fitted with the first guide rod with a clearance to form a step-limiting and fixing mechanism between the first guide rod and the second guide rod; the rivet pin tooth profile is an independent ring groove structure and the rivet tail is a single groove structure.

3. The steel structure riveting sliding joint according to claim 1, characterized in that: The fastener of the connecting component is provided with a rivet hole that mates with the second guide rod and is fixed at the cap.

4. The steel structure riveting sliding joint according to claim 1, characterized in that: The high molecular weight polyethylene connecting ring is made of wear-resistant ultra-high molecular weight material. Its designed wear thickness is determined based on the linear wear rate and service life of the material, so that each high molecular weight polyethylene connecting ring can slide freely on the corresponding mirror stainless steel friction pad within the designed service life.

5. The steel structure riveting sliding joint according to claim 1, characterized in that: The length of the rivet pin rod is greater than the total thickness of the upper and lower polyethylene connecting rings, the upper and lower mirror stainless steel friction pads, the sliding parts, and the fixing parts. This ensures that there is no clamping force between the rivet pins after installation, and guarantees that the pressure between each polyethylene connecting ring and the corresponding mirror stainless steel friction pad comes only from the weight of the node itself, and the sliding friction resistance is minimized.

6. The steel structure riveting sliding joint according to claim 1, characterized in that: The limiting washer is fixed to the pad or fastener by welding or countersunk bolts; the mirror stainless steel friction pad is fixed by welding or countersunk bolts.

7. The steel structure riveting sliding joint according to claim 1, characterized in that: The size of the opening in the middle of the slider is designed according to the maximum sliding amount of the sliding node, so that the inner wall of the slider does not contact the smooth rod of the rivet pin when the slider slides.

8. The steel structure riveting sliding joint according to claim 1, characterized in that: In the two concentric limiting washers, the outer diameter of the inner limiting washer is smaller than the inner diameter of the corresponding polyethylene connecting ring, and the inner diameter of the outer limiting washer is larger than the outer diameter of the corresponding polyethylene connecting ring.

9. The steel structure riveting sliding joint according to claim 1, characterized in that: The contact surface between the high molecular weight polyethylene connecting ring and the mirror stainless steel friction pad is coated with grease, and the coefficient of friction is ≤0.

01.

10. The steel structure riveting sliding joint according to claim 1, characterized in that: The inner and outer diameters of the mirror stainless steel friction pad are determined based on the maximum sliding amount of the sliding node and the maximum sliding amount of the corresponding high molecular weight polyethylene connecting ring, so that after the mirror stainless steel friction pad is fixed, the high molecular weight polyethylene connecting ring slides within the corresponding mirror stainless steel friction pad.

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