Damping type radial spherical plain bearing node and manufacturing method

Abstract

The invention discloses a damping type centripetal spherical plain bearing node and a manufacturing method, the damping type centripetal spherical plain bearing node comprises a support base plate, a first lug plate and a second lug plate are fixedly installed at the two ends of the support base plate respectively, and a pin shaft is installed between the first lug plate and the second lug plate; a viscous damping mechanism, a bearing mechanism, a third lug plate and a spring mechanism are sequentially and tightly arranged on the pin shaft in a sleeving manner; the viscous damping mechanism is arranged between the first lug plate and the third lug plate, the bearing mechanism is rotationally installed in a lug hole of the third lug plate, and the spring mechanism is arranged between the second lug plate and the third lug plate. The damping type radial spherical plain bearing node has the advantages of universal rotation, clear stress, simplicity in manufacturing and mounting, small node size and the like while solving the problems of temperature stress and earthquake action, solves the problems of large temperature stress, large earthquake response, large node size and the like of an existing super-long and large-span space steel structure, and has wide popularization and application prospects.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering construction, and in particular to a shock-absorbing radial spherical bearing node and a manufacturing method thereof. Background Art

[0002] In recent decades, with the continuous advancement of industrial technology and people's increasing requirements for the effects of construction projects, some large stadiums, railway transportation hub passenger stations, airport terminals, exhibition centers and other ultra-long and large-span space steel structures have emerged all over the world. The two most difficult problems faced by such structures are temperature stress and earthquake effects. Large public buildings have very high requirements for architectural effects, and such projects often do not have the possibility of setting structural expansion joints.

[0003] Therefore, how to solve the change of bearing internal force caused by temperature stress in the plane of the super-long roof is the biggest problem of this type of project. The present invention discloses a shock-absorbing radial spherical bearing node, which adds a butterfly spring in the direction of the pin of the traditional radial spherical bearing node. When the roof is subjected to temperature load and the bearing force changes, the bearing internal force changes in all directions caused by temperature stress can be released by rotating or offsetting the node.

[0004] Large-scale steel roof structure projects have many roof layer components, resulting in a large roof layer load. Correspondingly, under earthquake action, the roof layer has a large seismic load. The present invention discloses a shock-absorbing radial spherical bearing node, which adds a viscous damper in the direction of the pin shaft of a traditional radial spherical bearing node and uses its damping effect to achieve a shock-absorbing effect.

[0005] The significance of solving the above technical problems lies in that, compared with traditional support nodes, the shock-absorbing radial spherical bearing node of the present invention not only solves temperature stress and seismic effects, but also has the advantages of universal rotation, clear force, simple manufacturing and installation, and small node size, and has broad promotion and application prospects. Summary of the invention

[0006] According to the above problems, the present invention proposes a shock-absorbing radial spherical bearing node and a manufacturing method, and the specific scheme is as follows:

[0007] A shock-absorbing radial spherical bearing node comprises a support base plate, a first ear plate and a second ear plate are fixedly mounted at both ends of the support base plate, a pin is mounted between the first ear plate and the second ear plate; a viscous damping mechanism, a bearing mechanism, a third ear plate and a spring mechanism are tightly sleeved on the pin in sequence;

[0008] The viscous damping mechanism is arranged between the first ear plate and the third ear plate, the bearing mechanism is rotatably installed in the ear hole of the third ear plate, and the spring mechanism is arranged between the second ear plate and the third ear plate.

[0009] Preferably, the bearing mechanism comprises a bearing inner ring, a bearing outer ring and a pair of bearing glands;

[0010] A pair of bearing glands are respectively installed on both sides of the third ear plate, and a plurality of small holes are annularly distributed on the bearing gland along the shaft diameter. A high-strength bolt group passes through the small holes and is fixedly engaged with the plurality of small holes annularly distributed on the third ear plate, so that the outer ring of the bearing is installed in the ear hole of the third ear plate; the outer ring of the bearing is slidably engaged with the inner ring of the bearing, and the inner ring of the bearing is rotatably sleeved on the pin shaft;

[0011] An annular groove is reserved on the outer side of the bearing gland, and the viscous damping mechanism is slidably connected to the annular groove.

[0012] Further preferably, a pair of positioning rings are threadedly connected to the pin shaft, and the inner ring of the bearing is fixed between the pair of positioning rings.

[0013] Preferably, the viscous damping mechanism comprises a viscous damper, on which a plurality of viscous damper push rods are provided in an annular shape along the shaft diameter, and the viscous damper push rods are slidably connected to annular grooves on the bearing gland.

[0014] Preferably, the spring mechanism comprises a butterfly spring, the butterfly spring is sleeved on the pin shaft, and two ends of the butterfly spring are respectively welded to the third ear plate and the second ear plate.

[0015] Preferably, the outer sides of the first ear plate and the second ear plate are respectively fixedly mounted with a pin cover plate by means of a high-strength bolt group, and the pin is fixed between the first ear plate and the second ear plate by means of the pin cover plate.

[0016] Preferably, the first ear plate, the second ear plate and the support bottom plate are connected by welds.

[0017] Preferably, lubricating liquid is used between the pin and the inner ring of the bearing, between the inner ring of the bearing and the outer ring of the bearing, and between the outer ring of the bearing and the third ear plate to enable the contact surfaces to rotate.

[0018] The second purpose of the invention:

[0019] A method for manufacturing a shock-absorbing radial spherical bearing node, using the shock-absorbing radial spherical bearing node, comprises the following steps:

[0020] Step 1: Customize the viscous damper, butterfly spring, bearing inner ring, and bearing outer ring according to the design data of stiffness, damping, displacement, and rotation angle according to the project needs;

[0021] Step 2: Nest the third ear plate, the bearing outer ring, and the bearing inner ring layer by layer, and then fix the three components to each other through the bearing gland and high-strength bolt group;

[0022] Step 3: Connect the first ear plate and the second ear plate to the support bottom plate by welding;

[0023] Step 4: Weld the two ends of the butterfly spring to the second ear plate and the third ear plate, and slide the viscous damper push rod on the viscous damper into the annular groove of the bearing gland;

[0024] Step 5: Use special tools to tighten the pin shaft to the first ear plate, the locating ring, the inner ring of the bearing and the second ear plate. The two locating rings are threadedly connected to the middle part of the pin shaft.

[0025] Preferably, according to actual design needs, the upper limit of the left and right displacement of the radial spherical bearing node can be controlled by adjusting the distance between the third ear plate and the first ear plate and the second ear plate, and the size and stiffness of the butterfly spring; the upper limit of the rotation angle of the radial spherical bearing node can be adjusted by adjusting the size of the bearing inner ring, the bearing outer ring, the curvature of the contact surface between the bearing inner ring and the bearing outer ring, and the position of the locating ring.

[0026] The beneficial effects of the present invention are:

[0027] 1. By utilizing the sliding of the pin and the rotation of the bearing mechanism, the bearing node can rotate around and along the axial direction of the pin, providing more possibilities for engineering design;

[0028] 2. The rigidity of the butterfly spring is used to ensure that when the components connected to the third ear plate, the first ear plate and the second ear plate move horizontally along the axial direction of the pin shaft, they can provide reliable support to the direction of the pin shaft, effectively release the temperature stress under normal use conditions, and reduce the structural seams;

[0029] 3. Using the damping effect of the viscous damper to reduce the seismic response of the structure when an earthquake occurs, thereby optimizing the cross-sectional dimensions of the components connected to the third ear plate, the first ear plate, and the second ear plate;

[0030] 4. The components of the present invention have high processing and manufacturing precision, a wide range of material sources, simple installation and operation, large demand in the engineering field, and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0032] Figure 1It is a cross-sectional structural schematic diagram of the present invention;

[0033] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0034] In the figure:

[0035] 1-bearing inner ring; 2-bearing outer ring; 3-third ear plate; 4-bearing cover; 5-high-strength bolt group; 6-locating ring; 7-pin shaft; 81-first ear plate; 82-second ear plate; 9-support base plate; 10-pin shaft cover plate; 11-viscous damper; 12-viscous damper push rod; 13-butterfly spring. DETAILED DESCRIPTION

[0036] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.

[0037] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0038] The following is combined with Figure 1 -Attached Figure 2 The present invention will be described in detail.

[0039] Embodiment 1:

[0040] A shock-absorbing radial spherical bearing node, comprising a support base plate 9, a first ear plate 81 and a second ear plate 82 are fixedly mounted at both ends of the support base plate 9, a pin 7 is mounted between the first ear plate 81 and the second ear plate 82; a viscous damping mechanism, a bearing mechanism, a third ear plate 3 and a spring mechanism are tightly sleeved on the pin 7 in sequence;

[0041] The viscous damping mechanism is arranged between the first ear plate 81 and the third ear plate 3 , the bearing mechanism is rotatably installed in the ear hole of the third ear plate 3 , and the spring mechanism is arranged between the second ear plate 82 and the third ear plate 3 .

[0042] In this embodiment, when the pin shaft 7 is assembled with the first ear plate 81 and the second ear plate 82, a special tool is used to tighten and install them, and the contact surfaces are closely attached.

[0043] Furthermore, it can also be considered in the embodiment that the bearing mechanism includes a bearing inner ring 1, a bearing outer ring 2 and a pair of bearing glands 4;

[0044] A pair of the bearing glands 4 are respectively installed on both sides of the third ear plate 3. The bearing glands 4 are provided with a plurality of small holes annularly distributed along the shaft diameter. The high-strength bolt group 5 passes through the small holes and is fixedly engaged with the plurality of small holes annularly distributed on the third ear plate 3, so that the bearing outer ring 2 is installed in the ear hole of the third ear plate 3; the bearing outer ring 2 is slidably engaged with the bearing inner ring 1, and the bearing inner ring 1 is rotatably sleeved on the pin 7;

[0045] An annular groove is reserved on the outer side of the bearing cover 4, and the viscous damping mechanism is slidably connected to the annular groove.

[0046] Furthermore, in the embodiment, it can also be considered that a pair of positioning rings 6 are threadedly connected to the pin shaft 7 to fix the bearing inner ring 1 between the pair of positioning rings 6 .

[0047] In this embodiment, the positioning ring 6 is fixed to the pin 7 via threads, and the bearing inner ring 1 is fixed between the positioning rings 6 on both sides.

[0048] Furthermore, in an embodiment, it can also be considered that the viscous damping mechanism includes a viscous damper 11, and a plurality of viscous damper push rods 12 are annularly provided on the viscous damper 11 along the shaft diameter, and the viscous damper push rods 12 are slidably connected to the annular groove on the bearing cover 4.

[0049] In this embodiment, the viscous damper push rod 12 is placed in the reserved annular groove of the bearing cover 4. The groove is arranged in a ring shape along the bearing cover plate 4, and lubricating liquid is applied therebetween to ensure that the viscous damper push rod 12 can be in close contact with the annular groove and can slide.

[0050] Furthermore, in the embodiment, it can also be considered that the spring mechanism includes a butterfly spring 13, the butterfly spring 13 is sleeved on the pin 7, and the two ends of the butterfly spring 13 are welded to the third ear plate 3 and the second ear plate 82 respectively.

[0051] In this embodiment, the third ear plate 3 is connected to the second ear plate 82 by a butterfly spring (13), and the third ear plate 3 is connected to the first ear plate 81 by a viscous damper 11. The stiffness of the butterfly spring 13 is utilized to enable the third ear plate 3 to translate axially along the pin shaft 7 without disengaging.

[0052] Furthermore, in the embodiment, it can also be considered that the outer sides of the first ear plate 81 and the second ear plate 82 are respectively fixed with a pin cover plate 10 by a high-strength bolt group 5, and the pin 7 is fixed between the first ear plate 81 and the second ear plate 82 by the pin cover plate 10.

[0053] Furthermore, in the embodiment, it can also be considered that the first ear plate 81 , the second ear plate 82 and the support bottom plate 9 are connected by welding.

[0054] In this embodiment, after the weld is connected, the welded parts are subjected to rust prevention treatment, and all sliding and rotating movements of the support base plate 9 will not cause the first ear plate 81, the second ear plate 82 and the support base plate 9 to move or rotate.

[0055] Furthermore, in the embodiments, it can also be considered that lubricating fluid is used between the pin shaft 7 and the bearing inner ring 1, between the bearing inner ring 1 and the bearing outer ring 2, and between the bearing outer ring 2 and the third ear plate 3 to enable the contact surfaces to rotate.

[0056] In this embodiment, the inner ring 1 of the bearing and the pin 7 , as well as the outer ring 2 of the bearing and the third ear plate 3 are in close contact and can slide, so that the present invention can realize the function of axial rotation around the pin 7 .

[0057] Furthermore, it can also be considered in the embodiments that the support base plate 9 can be a circular or rectangular steel plate, or can be a beam-column rod according to engineering requirements.

[0058] Furthermore, it can also be considered in the embodiment that the viscous damper 11 is a velocity damper.

[0059] In this embodiment, under the action of an earthquake, the support can reduce the seismic response of the structure by using the damping effect of the viscous damper 11. During the structural design, the damping parameters of the damper can be determined according to the calculation requirements, and the finished viscous damper 11 can be customized and purchased.

[0060] Working principle:

[0061] The present invention includes a pin 7, a butterfly spring 13, a viscous damper 11, a support base plate 9, etc. The bearing inner ring 1 is nested inside the bearing outer ring 2, and then the bearing inner ring 1 and the bearing outer ring 2 are placed in the third ear plate 3, and the bearing outer ring 2 is fixed in the ear hole of the third ear plate 3 through the bearing cover 4 and the high-strength bolt group 5. The bearing inner ring 1 is fixed to the middle of the pin 7 through the pin 7 and the positioning ring 6, and then the pin 7 is fixed to the inner side of the first ear plate 81 and the second ear plate 82 through the high-strength bolt group 5 and the pin cover plate 10. The viscous damper 11 is fixed on the first ear plate 81, and the viscous damper push rod 12 is placed in the annular groove at the center of the bearing cover 4. The first ear plate 81, the second ear plate 82 and the support base plate 9 are connected by welding.

[0062] The present invention adds bearings, butterfly springs 13 and viscous dampers 11 to the traditional support nodes, and utilizes the bearings provided at the joints to achieve the ability to rotate around and along the axial direction of the pin shaft 7, thereby realizing a universal hinge.

[0063] By using the stiffness provided by the butterfly spring 13, the radial spherical bearing node can translate along the pin 7, release temperature stress, reduce the internal force of the component, thereby optimizing the component cross section, and can reduce or eliminate the structural expansion joint; through the damping effect of the viscous damper 11, the radial spherical bearing node has a shock absorption function, reducing the seismic response of the large-span steel structure. The node has the functions of releasing temperature stress, universal hinge and shock absorption, and has the advantages of simple manufacturing, clear force transmission, and wide application, and can be widely used in the hinge support node of large roof steel structure engineering.

[0064] Embodiment 2:

[0065] A method for manufacturing a shock-absorbing radial spherical bearing node, using the shock-absorbing radial spherical bearing node, comprises the following steps:

[0066] Step 1: According to the engineering requirements, the viscous damper 11, the butterfly spring 13, the bearing inner ring 1, and the bearing outer ring 2 are customized according to the design data of stiffness, damping, displacement, and rotation angle;

[0067] Step 2: nest the third ear plate 3, the bearing outer ring 2, and the bearing inner ring 1 layer by layer, and then fix the three components to each other through the bearing gland 4 and the high-strength bolt group 5;

[0068] Step 3: Connect the first ear plate 81 and the second ear plate 82 to the support base plate 9 by welding;

[0069] Step 4: Weld the two ends of the butterfly spring 13 to the second ear plate 82 and the third ear plate 3, and slide the viscous damper push rod 12 on the viscous damper 11 into the annular groove of the bearing cover 4;

[0070] Step 5: Use special tools to tightly install the pin 7, the first ear plate 81, the positioning ring 6, the bearing inner ring 1 and the second ear plate 82. The two positioning rings 6 are threadedly connected to the middle part of the pin 7.

[0071] In this embodiment, the components of the support node are customized according to the engineering needs, especially the key components such as the viscous damper 11, butterfly spring 13, bearing inner ring 1, bearing outer ring 2, etc. are customized according to the design data such as stiffness, damping, displacement, and angle. Everything is customized according to the on-site needs.

[0072] When the pin 7 is pushed in with a special tool, it is installed in the order of the first ear plate 81, the viscous damper 11, the first bearing cover 4, the first locating ring 6, the bearing inner ring 1, the second locating ring 6, the second bearing cover 4, the butterfly spring 13, and the second ear plate 82. Finally, the pin 7 is capped and fixed with the pin cover plate 10 on the outside of the first ear plate 81 and the second ear plate 82.

[0073] Furthermore, it can also be considered in the embodiments that, according to actual design needs, the left and right displacement upper limit of the radial spherical bearing node can be controlled by adjusting the distance between the third ear plate 3 and the first ear plate 81, the second ear plate 82, and the size and stiffness of the butterfly spring 13; the rotation angle upper limit of the radial spherical bearing node can be adjusted by adjusting the size of the bearing inner ring 1, the bearing outer ring 2, the curvature of the contact surface between the bearing inner ring 1 and the bearing outer ring 2, and the position of the positioning ring 6.

[0074] In this embodiment, the bearing inner ring 1 and the bearing outer ring 2 are in close contact and can slide, and the upper limit of the rotation angle of the radial spherical bearing node is adjusted by adjusting the bearing size, the curvature of the contact surface between the bearings and the position of the positioning ring 6, thereby realizing the function of the node rotating along the axial direction of the pin shaft.

[0075] The above embodiments describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A shock-absorbing radial spherical bearing node, characterized in that: The invention comprises a support base plate (9), a first ear plate (81) and a second ear plate (82) are respectively fixedly mounted at two ends of the support base plate (9), a pin shaft (7) is mounted between the first ear plate (81) and the second ear plate (82); a viscous damping mechanism, a bearing mechanism, a third ear plate (3) and a spring mechanism are tightly sleeved on the pin shaft (7) in sequence; The viscous damping mechanism is arranged between the first ear plate (81) and the third ear plate (3), the bearing mechanism is rotatably mounted in the ear hole of the third ear plate (3), and the spring mechanism is arranged between the second ear plate (82) and the third ear plate (3).

2. The shock-absorbing radial spherical plain bearing node according to claim 1, characterized in that: The bearing mechanism comprises a bearing inner ring (1), a bearing outer ring (2) and a pair of bearing glands (4); A pair of the bearing pressure covers (4) are respectively installed on both sides of the third ear plate (3); a plurality of small holes are distributed in an annular shape along the shaft diameter on the bearing pressure cover (4); a high-strength bolt group (5) passes through the small holes and is fixedly engaged with the plurality of small holes distributed in an annular shape on the third ear plate (3); the bearing outer ring (2) is installed in the ear hole of the third ear plate (3); the bearing outer ring (2) and the bearing inner ring (1) are slidably engaged with each other, and the bearing inner ring (1) is rotatably sleeved on the pin shaft (7); An annular groove is reserved on the outer side of the bearing cover (4), and the viscous damping mechanism is slidably connected to the annular groove.

3. The shock-absorbing radial spherical plain bearing node according to claim 2, characterized in that: A pair of positioning rings (6) are threadedly connected to the pin shaft (7), and the bearing inner ring (1) is fixed between the pair of positioning rings (6).

4. The shock-absorbing radial spherical plain bearing node according to claim 2, characterized in that: The viscous damping mechanism comprises a viscous damper (11), on which a plurality of viscous damper push rods (12) are provided in an annular shape along the shaft diameter, and the viscous damper push rods (12) are slidably connected to an annular groove on the bearing cover (4).

5. The shock-absorbing radial spherical plain bearing node according to claim 1, characterized in that: The spring mechanism comprises a butterfly spring (13), the butterfly spring (13) is sleeved on the pin shaft (7), and the two ends of the butterfly spring (13) are respectively welded to the third ear plate (3) and the second ear plate (82).

6. A shock-absorbing radial spherical plain bearing node according to claim 1, characterized in that: The outer sides of the first ear plate (81) and the second ear plate (82) are respectively fixedly mounted with a pin cover plate (10) by means of a high-strength bolt group (5), and the pin (7) is fixed between the first ear plate (81) and the second ear plate (82) by means of the pin cover plate (10).

7. The shock-absorbing radial spherical plain bearing node according to claim 1, characterized in that: The first ear plate (81), the second ear plate (82) and the support base plate (9) are connected by welding.

8. The shock-absorbing radial spherical plain bearing node according to claim 2, characterized in that: Lubricating fluid is used between the pin shaft (7) and the bearing inner ring (1), between the bearing inner ring (1) and the bearing outer ring (2), and between the bearing outer ring (2) and the third ear plate (3) to enable the contact surfaces to rotate.

9. A method for manufacturing a shock-absorbing radial spherical bearing node, using the shock-absorbing radial spherical bearing node according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: According to the engineering requirements, the viscous damper (11), the butterfly spring (13), the bearing inner ring (1), and the bearing outer ring (2) are customized according to the design data of stiffness, damping, displacement, and rotation angle; Step 2: nesting the third ear plate (3), the bearing outer ring (2), and the bearing inner ring (1) layer by layer, and then fixing the three components to each other through the bearing gland (4) and the high-strength bolt group (5); Step 3: Connect the first ear plate (81) and the second ear plate (82) to the support base plate (9) by welding; Step 4: Weld the two ends of the butterfly spring (13) to the second ear plate (82) and the third ear plate (3), and slide the viscous damper push rod (12) on the viscous damper (11) to the annular groove of the bearing cover (4); Step 5: Use a special tool to tightly install the pin (7) with the first ear plate (81), the positioning ring (6), the bearing inner ring (1) and the second ear plate (82), and the two positioning rings (6) are threadedly connected to the middle part of the pin (7).

10. The method for manufacturing a vibration-absorbing radial spherical plain bearing node according to claim 9, characterized in that: According to actual design requirements, the upper limit of the left-right displacement of the radial spherical bearing node can be controlled by adjusting the distance between the third ear plate (3) and the first ear plate (81), the second ear plate (82), and the size and stiffness of the butterfly spring (13); The upper limit value of the rotation angle of the radial spherical bearing node is adjusted by adjusting the size of the bearing inner ring (1), the bearing outer ring (2), the curvature of the contact surface between the bearing inner ring (1) and the bearing outer ring (2) and the position of the positioning ring (6).

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