阅读说明：本技术 一种大型芯轴结构弹性支承球铰连接节点 (A kind of large size core shaft structure elastic bearing flexural pivot connecting node ) 是由 陈务军 胡建辉 赵兵 徐建东 杨钧 于 2019-08-26 设计创作，主要内容包括：本发明公开了一种大型芯轴结构弹性支承球铰连接节点,涉及复合材料结构技术领域,包括：芯轴桁架顶端节点、毂轴端节点、毂盘、承力架、承压球窝和限位盖板；毂轴端节点的端部设置凸台承压面,毂盘和承力架连接凸台承压面,承压球窝连接承力架,芯轴桁架顶端节点和限位盖板连接承压球窝；芯轴桁架顶端节点包括节点主体、螺套嵌件、螺栓球铰；节点主体呈三棱锥结构,底边外伸三脚套管,用于连接CFRP管桁架；螺栓球铰的螺杆端连接螺套嵌件,球体端连接承压球窝,螺套嵌件嵌入节点主体。本发明可以实现芯轴复合材料结构复杂连接,可承受大轴压,释放弯矩,保证有限转动,传力路径清晰,运动限位明确,质量轻,制作简单,装配连接可靠。(The invention discloses a kind of large-scale core shaft structure elastic bearing flexural pivot connecting nodes, are related to composite structure technical field, comprising: mandrel truss top node, hub axle end node, hub, heavy frame, pressure-bearing ball-and-socket and limit cover board；Boss pressure-bearing surface is arranged in the end of hub axle end node, and hub connects boss pressure-bearing surface with heavy frame, and pressure-bearing ball-and-socket connects heavy frame, and mandrel truss top node connects pressure-bearing ball-and-socket with limit cover board；Mandrel truss top node includes node body, swivel nut inserts, bolt flexural pivot；Node body is in trigone wimble structure, overhanging three foot sleeve in bottom edge, for connecting CFRP tubular truss；The screw rod end of bolt flexural pivot connects swivel nut inserts, and sphere end connects pressure-bearing ball-and-socket, and swivel nut inserts is embedded in node body.The connection of mandrel composite structure complexity may be implemented in the present invention, can bear big axis pressure, discharges moment of flexure, guarantees restricted rotational movement, and Path of Force Transfer is clear, and sports limiting is clear, light weight, and production is simple, and assembly connection is reliable.)

1. a kind of large size core shaft structure elastic bearing flexural pivot connecting node characterized by comprising

Mandrel truss top node, hub axle end node, hub, heavy frame, pressure-bearing ball-and-socket and limit cover board；

The end of the hub axle end node is provided with boss pressure-bearing surface, and the hub setting outer circle connects the boss pressure-bearing surface, The heavy frame setting inner circle connects the boss pressure-bearing surface, and the pressure-bearing ball-and-socket connects the heavy frame, the mandrel truss Top node connects the pressure-bearing ball-and-socket, and the limit cover board connects the pressure-bearing ball-and-socket；

The mandrel truss top node includes node body, swivel nut inserts, bolt flexural pivot；The node body is in triangular pyramid knot Structure, top are provided with hexagonal prisms centerbody, and three ribs of the node body, which cross, is connected to the hexagonal prisms centerbody；It is described The bottom edge of node body is in equilateral triangle, and overhanging three foot sleeve in bottom edge, three foot sleeve is for connecting CFRP tubular truss Three string pipes；The screw rod end of the bolt flexural pivot connects the swivel nut inserts, described in the sphere end connection of the bolt flexural pivot Pressure-bearing ball-and-socket, the swivel nut inserts are embedded in the hexagonal prisms centerbody.

2. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that three footmuff The appearance of pipe is equipped with vertical uniform gap, and three foot sleeve is inserted in connection three string pipes, connection type be it is cementing, it is described Cementing section of part of string pipe thickeies.

3. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that the hub Circumferential direction is evenly arranged with radial pull rod, and the radial direction pull rod is connect with the hub.

4. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that the pressure-bearing ball Nest is in the form of annular discs, and border is circular planes plate, and center is recessed spherical crown shell, and interior pressure-bearing surface uses MoS2 sputter process.

5. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that the heavy frame The Circular Plate being oppositely arranged in parallel including two is circumferentially uniformly arranged floor between two Circular Plates and is attached, institute Floor is stated perpendicular to the Circular Plate, the quantity of the floor is greater than 6.

6. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that the limited cover Plate is put together by symmetrical two parts, and outer ring is rounded, intermediate hexagonal.

7. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that the hub axle end Node, the hub, the heavy frame joint face be clearance fit.

8. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that the bolt sphere The sphere face of hinge uses MoS2 sputter process.

9. large size core shaft structure elastic bearing flexural pivot connecting node as described in claim 1, which is characterized in that the hub axle end Node, the limit cover board are made of CFRP composite material, the heavy frame, the pressure-bearing ball-and-socket, the bolt flexural pivot, described Swivel nut inserts is made of titanium alloy, and the node body, the hexagonal prisms centerbody, three foot sleeve, the hub are by aluminium Alloy is made；The node body, the hexagonal prisms centerbody, three foot sleeve, the heavy frame, the pressure-bearing ball-and-socket are It is integrally formed.

10. large size core shaft structure elastic bearing flexural pivot connecting node as claimed in claim 4, which is characterized in that the radial direction Pull rod is made of CFRP composite material.

Technical field

The present invention relates to composite structure technical fields more particularly to a kind of large-scale core shaft structure elastic bearing flexural pivot to connect Connect node.

Background technique

Composite material has many advantages, such as light weight, rigidity big, antivibration and endurance, and the truss of thin-wall circular tube and its composition Structure had many characteristics, such as to can be achieved large scale, lightweight, it is high just, still, chord member of truss and web member connecting node and truss structure Connection between part is always the technological difficulties of composite structure engineering field since geometry, mechanics and technique limit.

Rainer Sch ü tze&Hans Christian Goetting writes " Carbonfiber-Based Structural Elements used in the Truss Structures of the Zeppelin NT and Future Applications of Active Struts”(3rd International Airship Convention and Exhibition, 2000, Paper A-25), describe Zeppelin NT dirigible keel two longitudinal aluminium alloy truss, two Combination connection between round tube CFRP trivet trusses.

Rainer Sch ü tze writes " Lightweight carbon fiber rods and truss structures " (Materials&Design, 1997,18 (4/6): 231-238) describe a kind of foam sandwich pipe composite material truss, and in detail A kind of composite material design of node and forming technology are carefully described, still, forming technology is extremely complex, and cause stress unreliable, It carries small.

Chinese patent CN201910275705.7, a kind of large scale semirigid structure dirigible disclose a kind of mainly by opening The semi-rigid dirigible for drawing one-piece keel to constitute, keel mandrel is continuous contact model compression-member, by multistage hub axle and mandrel purlin Frame hingedly forms, this hinged releasable biaxial bending and the smaller limit torque of receiving are primarily subjected to larger pressure and smaller rotation, But the patent does not provide specific pattern and connection.

Therefore, those skilled in the art is dedicated to developing a kind of large-scale core shaft structure elastic bearing flexural pivot connecting node, It has the advantages that succinct production, stress and power transmission are reasonable, it is simple and reliable to connect, to solve composite material of the existing technology Structure connects the problem that configuration is complicated, production is difficult, bearing capacity is small.

Summary of the invention

In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to the prior art, there are composite woods Expect the problem that structure connection configuration is complicated, production is difficult, bearing capacity is small.

To achieve the above object, the present invention provides a kind of large-scale core shaft structure elastic bearing flexural pivot connecting nodes, comprising: Mandrel truss top node, hub axle end node, hub, heavy frame, pressure-bearing ball-and-socket and limit cover board；

The end of the hub axle end node is provided with boss pressure-bearing surface, and the hub setting outer circle connects the boss pressure-bearing Face, the heavy frame setting inner circle connect the boss pressure-bearing surface, and the pressure-bearing ball-and-socket connects the heavy frame, the mandrel purlin Frame top node connects the pressure-bearing ball-and-socket, and the limit cover board connects the pressure-bearing ball-and-socket；

The mandrel truss top node includes node body, swivel nut inserts, bolt flexural pivot；The node body is in trigone Wimble structure, top are provided with hexagonal prisms centerbody, and three ribs of the node body, which cross, is connected to the hexagonal prisms centerbody； The bottom edge of the node body is in equilateral triangle, and overhanging three foot sleeve in bottom edge, three foot sleeve is for connecting CFRP pipe Three string pipes of truss；The screw rod end of the bolt flexural pivot connects the swivel nut inserts, the sphere end connection of the bolt flexural pivot The pressure-bearing ball-and-socket, the swivel nut inserts are embedded in the hexagonal prisms centerbody.

Further, the appearance of three foot sleeve is equipped with vertical uniform gap, and three foot sleeve is inserted in described in connection Three string pipes, connection type are cementing, cementing section of part thickening of the string pipe.

Further, the circumferential direction of the hub is evenly arranged with radial pull rod, and the radial direction pull rod is connect with the hub.

Further, the pressure-bearing ball-and-socket is in the form of annular discs, and border is circular planes plate, and center is recessed spherical crown shell, interior pressure-bearing Face uses MoS2 sputter process.

Further, the heavy frame includes two Circular Plates being oppositely arranged in parallel, edge between two Circular Plates Circumferential direction is uniformly arranged floor and is attached, and the floor is greater than 6 perpendicular to the Circular Plate, the quantity of the floor.

Further, the limit cover board is put together by symmetrical two parts, and outer ring is rounded, intermediate hexagonal.

Further, the hub axle end node, the hub, the heavy frame joint face be clearance fit.

Further, the sphere face of the bolt flexural pivot uses MoS2 sputter process.

Further, the hub axle end node, the limit cover board are made of CFRP composite material, the heavy frame, institute It states pressure-bearing ball-and-socket, the bolt flexural pivot, the swivel nut inserts to be made of titanium alloy, the node body, the hexagonal prisms center Body, three foot sleeve, the hub are made of aluminium alloy；The node body, the hexagonal prisms centerbody, three footmuff Pipe, the heavy frame, the pressure-bearing ball-and-socket are integrally formed.

Further, the radial pull rod is made of CFRP composite material.

The connection of large scale elastic bearing mandrel composite structure complexity may be implemented in the present invention, can bear big axis pressure, release Moment of flexure is put, guarantees restricted rotational movement, Path of Force Transfer is clear, and sports limiting is clear, light weight, and production is simple, and assembly connection is reliable, can Applied to large aerospace Flight Vehicle Structure, such as dirigible, unmanned plane.

It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with It is fully understood from the purpose of the present invention, feature and effect.

Detailed description of the invention

Fig. 1 is that the large-scale core shaft structure elastic bearing flexural pivot connecting node facade of a preferred embodiment of the invention decomposes Figure；

Fig. 2 is the large-scale core shaft structure elastic bearing flexural pivot connecting node three-dimensional exploded of a preferred embodiment of the invention Figure；

The large-scale core shaft structure elastic bearing flexural pivot connecting node cross-sectional view of preferred embodiment Fig. 3 of the invention；

Fig. 4 is the mandrel truss top node three-dimensional, exploded view of a preferred embodiment of the invention.

Wherein, 1- mandrel truss top node, 101- node body, 102- swivel nut inserts, 103- bolt flexural pivot, 104- CFRP tubular truss, tri- foot sleeve of 105-, 106- hexagonal prisms centerbody, 2- hub axle end node, 21- boss pressure-bearing surface, 3- hub, 4- Heavy frame, 5- pressure-bearing ball-and-socket, 6- limit cover board, 7- radial direction pull rod.

Specific embodiment

Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits The embodiment that Yu Wenzhong is mentioned.

In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and there is no limit by the present invention The size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.

As shown in Figure 1, Figure 2 and Figure 3, the large-scale core shaft structure elastic bearing flexural pivot connecting node of one of the present embodiment, It include: mandrel truss top node 1, hub axle end node 2, hub 3, heavy frame 4, pressure-bearing ball-and-socket 5, limit cover board 6.Hub axle end segment The end of point 2 is provided with boss pressure-bearing surface 21, and hub 3 is arranged outer circle and connects boss pressure-bearing surface 21, and heavy frame 4 is arranged inner circle and connects Boss pressure-bearing surface 21, pressure-bearing ball-and-socket 5 connect heavy frame 4, and mandrel truss top node 1 connects pressure-bearing ball-and-socket 5, and limit cover board 6 connects Connect pressure-bearing ball-and-socket 5.Hub axle end node 2, hub 3, heavy frame 4 joint face be clearance fit.

As shown in figure 4, mandrel truss top node 1 includes node body 101, swivel nut inserts 102, bolt flexural pivot 103；Section Point main body 101 is in trigone wimble structure, and top is provided with hexagonal prisms centerbody 106, and three ribs of node body 101, which cross, to be connected to Hexagonal prisms centerbody 106；The bottom edge of node body 101 is in equilateral triangle, from overhanging three foot sleeve 105 in bottom edge, for connecting Three string pipes of CFRP tubular truss 104；The screw rod end of bolt flexural pivot 103 connects swivel nut inserts 102, the sphere of bolt flexural pivot 103 End connection pressure-bearing ball-and-socket 5, swivel nut inserts 102 are embedded in hexagonal prisms centerbody 106.The spherical surface at the sphere end of bolt flexural pivot 103 uses MoS2 sputter process.

The appearance of three foot sleeves 105 is equipped with vertical uniform gap, is obtained by Milling Machining；Three foot sleeves 105 are inserted in connection Three string pipes of CFRP tubular truss 104, connection type is cementing, it is preferable that the cementing position of string pipe can locally thicken, to reach More ask stable cementing effect.

It is evenly arranged with radial pull rod 7 in the circumferential direction of hub 3, radial pull rod 7 is connect with hub 3, for providing elastic branch It holds.

Pressure-bearing ball-and-socket 5 is in the form of annular discs, and border is circular planes plate, and center is recessed spherical crown shell, and interior pressure-bearing surface carries out MoS2 and splashes Penetrate processing.

Heavy frame 4 is that two pieces of Circular Plates are specifically oppositely arranged by two layers of annulus cage structure, and two pieces of Circular Plates are flat Row is connected between two pieces of Circular Plates with the floor being uniformly arranged along its circumferential direction, and floor is vertical with Circular Plate, more preferable in order to reach Load effect, number of ribs is preferably more than 6.

Limit cover board 6 is put together by symmetrical two parts, and outer ring is rounded, intermediate hexagonal.

Hub axle end node 2, limit cover board 6, radial pull rod 7 are that CFRP high-performance composite materials are made, and heavy frame 4 is held Pressure ball nest 5, bolt flexural pivot 103, swivel nut inserts 102 are made of high-strength light titanium alloy, node body 101, three foot sleeves 105 It is made with hub 3 of high-strength light aluminium alloy.

Node body 101, hexagonal prisms centerbody 106, three foot sleeves 105, heavy frame 4, pressure-bearing ball-and-socket 5 are overall processing Forming.

Structure size of the invention, technological design can determine according to actual needs.In A Thin-walled Tube of Composite and its connection are adopted Carbon fiber model, resin model, Lay up design and design of Forming Technology etc. can determine according to actual needs.

The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Scheme, all should be within the scope of protection determined by the claims.