CN110985489A - Connection structure and connection system - Google Patents

Connection structure and connection system Download PDF

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Publication number
CN110985489A
CN110985489A CN201911326814.3A CN201911326814A CN110985489A CN 110985489 A CN110985489 A CN 110985489A CN 201911326814 A CN201911326814 A CN 201911326814A CN 110985489 A CN110985489 A CN 110985489A
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China
Prior art keywords
hole
conical
nut
connection
limiting
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Granted
Application number
CN201911326814.3A
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Chinese (zh)
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CN110985489B (en
Inventor
吴蓓蓓
罗俊航
霍浩亮
蔡逸如
李明春
张珊
张博昌
解建恒
李奥
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Beijing Kongtian Technology Research Institute
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Beijing Kongtian Technology Research Institute
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Priority to CN201911326814.3A priority Critical patent/CN110985489B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/025—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread specially designed to compensate for misalignement or to eliminate unwanted play
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
    • B64F5/60—Testing or inspecting aircraft components or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/041—Releasable devices
    • F16B37/042—Releasable devices locking by rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/02—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/027—Specimen mounting arrangements, e.g. table head adapters

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Transportation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

The invention provides a connecting structure and a connecting system, wherein the connecting structure comprises a first connecting body, a second connecting body and a connecting piece, wherein the first connecting body is provided with a connecting through hole and a limiting through hole; the second connecting body is provided with a conical hole, and the conical hole, the limiting through hole and the connecting through hole are sequentially distributed; the conical stud penetrates through the conical hole, the limiting through hole and the connecting through hole and is provided with a first cylindrical part, a conical part and a second cylindrical part which are sequentially connected; the conical matching structure is arranged in the limiting through hole and is provided with a first conical surface matched with the conical part and a limiting cylindrical surface matched with the inner wall of the limiting through hole; the conical nut is screwed on the first cylindrical part and is provided with a second conical surface matched with the conical hole; the fastening nut is screwed on the second cylindrical part and is abutted against the end face, deviating from the second connecting body, of the first connecting body. By the aid of the method and the device, the technical problem that vibration load is difficult to effectively transfer to the aircraft or the section of the aircraft in a vibration test of the large aircraft is solved.

Description

Connection structure and connection system
Technical Field
The invention relates to the technical field of aircraft test equipment, in particular to a connecting structure and a connecting system.
Background
The high-speed aircraft has high flying speed and large mass and can bear large vibration load in the flying process. In order to ensure the reliability of the aircraft structure, internal equipment and cables under vibration load in the flight process, ground vibration tests of the whole aircraft and aircraft sections need to be carried out for examination and verification. In the ground vibration test, the vibration load borne by the aircraft structure, the internal equipment and the cable in the ground vibration test is required to be ensured not to be too large and too tight examination or too small and insufficient examination, so that the transmission performance of the aircraft, the aircraft section and the connection structure of the vibration test adapter piece on the vibration load is a key influence factor of the authenticity coverage of the ground vibration test.
The hoop embracing structure can be used as a connecting structure to realize the connection of the aircraft or a section of the aircraft and the vibration test adaptor. However, the hoop holding structure can hold the connecting piece tightly; the size of the large high-speed aircraft and the size of the sections of the large high-speed aircraft are large, and the outer heat-proof structure of the aircraft cannot bear additional compression load, so that the difficulty of connecting the large high-speed aircraft and the sections of the large high-speed aircraft, such as cabin structures, by adopting the hoop structure is large.
Disclosure of Invention
The invention aims to provide a connecting structure and a connecting system, which are used for solving the technical problem that in a vibration test of a large aircraft, vibration load is difficult to effectively transmit to the aircraft or a section of the aircraft.
The above object of the present invention can be achieved by the following technical solutions:
the present invention provides a connection structure including: the first connecting body is provided with a connecting through hole and a limiting through hole, and the inner diameter of the limiting through hole is larger than that of the connecting through hole; the second connecting body is provided with a conical hole, and the conical hole, the limiting through hole and the connecting through hole are distributed in sequence; the conical stud penetrates through the conical hole, the limiting through hole and the connecting through hole and is provided with a first cylindrical part, a conical part and a second cylindrical part which are sequentially connected; the cone-shaped matching structure is arranged in the limiting through hole and is provided with a first cone surface matched with the cone-shaped part and a limiting cylindrical surface matched with the inner wall of the limiting through hole; the conical nut is screwed on the first cylindrical part and provided with a second conical surface matched with the conical hole; and the fastening nut is in threaded connection with the second cylindrical part and is abutted against the end face, deviating from the second connecting body, of the first connecting body.
In a preferred embodiment, the tapered mating feature comprises a plurality of tapered mating blocks distributed circumferentially about the axis of the tapered stud.
In a preferred embodiment, a circumferential gap is provided between two adjacent conical mating blocks.
In a preferred embodiment, the circumferential gap between two adjacent conical mating blocks ranges in size from 1 ° to 10 °.
In a preferred embodiment, the tightening nut includes a first nut abutting against the first connecting body and a second nut abutting against the first nut.
In a preferred embodiment, the tightening torque of the first nut is controlled according to 100Nm and the tightening torque of the cone nut is controlled according to 80 Nm.
In a preferred embodiment, the connection structure comprises a flat washer disposed between the set nut and the first connection body.
In a preferred embodiment, the connecting structure comprises an interface transition sleeve, the interface transition sleeve comprises a first sleeve part and a second sleeve part which are connected into a whole, and the outer diameter of the second sleeve part is larger than that of the first sleeve part; the first sleeve part is in threaded connection with the connecting through hole, and is provided with a sleeve hole for the tapered stud to pass through.
In a preferred embodiment, the connecting structure includes a locknut connected to the tapered stud, and the locknut abuts against an end surface of the tapered nut facing away from the fastening nut.
The present invention provides a connection system comprising: in the above connection structure, the first connection bodies of the connection structures are connected into a whole, and the second connection bodies of the connection structures are connected into a whole.
The invention has the characteristics and advantages that:
the conical matching structure, the conical stud and the fastening nut are matched to position the first connecting body and the conical stud; through the cooperation of the first conical surface and the conical part, the axial and radial tight fit can be carried out, the axial and radial positioning between the first connecting body and the conical stud is realized, the moments in multiple directions are transmitted, and the transmission of the vibration load is facilitated.
The second connector is abutted against the first connector, the second conical surface of the conical nut is matched with the conical hole of the second connector, axial and radial positioning and tight fit between the first connector and the second connector can be realized, and torque and vibration load can be effectively transmitted between the second connector and the conical stud.
This connection structure can realize between first connector and the second connector axial and radial location to between first connector and the second connector, can transmit the vibration load through taper cooperation structure, toper double-screw bolt and cone nut, effectively avoid the vibration load to take place amplification or reduction by a relatively large margin, improved the accuracy of transmission vibration load. When the vibration test of a large aircraft is carried out, the first connecting body can be used as the aircraft or a section thereof, and the second connecting body can be used as an adapter of the vibration test, so that the effective transmission of vibration load between the first connecting body and the second connecting body is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a half-sectional view of a connection structure provided by the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of a tapered stud in the connection shown in FIG. 1;
FIG. 4 is a schematic view of a cone nut of the coupling arrangement shown in FIG. 1;
FIG. 5 is a schematic view of a first connecting body in the connecting structure shown in FIG. 1;
FIG. 6 is a schematic view of a tapered mating block in the connection shown in FIG. 1;
FIG. 7 is a schematic structural view of an interface transition sleeve in the connection structure shown in FIG. 1;
fig. 8 is a schematic structural diagram of a connection system provided by the present invention.
The reference numbers illustrate:
1. a connecting structure; 2. a cabin structure; 3. a vibration test switching structure;
10. a first connecting body; 11. a connecting through hole; 12. a limiting through hole;
20. a second connector; 21. a tapered hole;
30. a tapered stud; 31. a first cylindrical portion; 32. a second cylindrical portion; 33. a tapered portion;
40. a tapered mating structure; 401. a tapered mating block; 41. a first conical surface; 42. a limiting cylindrical surface; 43. a circumferential gap;
50. a cone nut; 51. a second tapered surface;
60. tightening the nut; 61. a first nut; 62. a second nut; 63. a flat washer;
70. an interface conversion sleeve; 71. a first sleeve portion; 711. a sleeve bore; 72. a second sleeve portion;
80. a locknut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The present invention provides a connection structure, as shown in fig. 1, 3 to 5, comprising: the first connecting body 10, the second connecting body 20, the tapered stud 30, the tapered matching structure 40, the tapered nut 50 and the fastening nut 60; the first connecting body 10 is provided with a connecting through hole 11 and a limiting through hole 12, and the inner diameter of the limiting through hole 12 is larger than that of the connecting through hole 11; the second connector 20 is provided with a tapered hole 21, and the tapered hole 21, the limiting through hole 12 and the connecting through hole 11 are distributed in sequence; the tapered stud 30 sequentially penetrates through the tapered hole 21, the limiting through hole 12 and the connecting through hole 11, and the tapered stud 30 is provided with a first cylindrical part 31, a tapered part 33 and a second cylindrical part 32 which are sequentially connected; the conical matching structure 40 is arranged in the limiting through hole 12, and the conical matching structure 40 is provided with a first conical surface 41 matched with the conical part 33 and a limiting cylindrical surface 42 matched with the inner wall of the limiting through hole 12; the taper nut 50 is in threaded connection with the first cylindrical portion 31, and the taper nut 50 is provided with a second taper surface 51 which is matched with the taper hole 21; the fastening nut 60 is screwed to the second cylindrical portion 32, and the fastening nut 60 abuts against an end surface of the first connecting body 10 facing away from the second connecting body 20.
The conical matching structure 40, the conical stud 30 and the fastening nut 60 are matched to position the first connecting body 10 and the conical stud 30; through the matching of the first conical surface 41 and the conical part 33, axial and radial tight fitting can be performed, so that axial and radial positioning between the first connecting body 10 and the conical stud 30 is realized, multi-directional torque is transmitted, and vibration load is transmitted conveniently.
The second connecting body 20 is abutted against the first connecting body 10; the second taper surface 51 of the taper nut 50 is matched with the taper hole 21 of the second connecting body 20, so that the axial and radial positioning and tight fit between the first connecting body 10 and the second connecting body 20 can be realized, and the moment and the vibration load can be effectively transmitted between the second connecting body 20 and the taper stud 30.
The connecting structure can realize the axial and radial positioning between the first connecting body 10 and the second connecting body 20, and between the first connecting body 10 and the second connecting body 20, the vibration load can be transmitted through the taper matching structure 40, the taper stud 30 and the taper nut 50, so that the vibration load is effectively prevented from being amplified or reduced by a larger amplitude, and the accuracy of transmitting the vibration load is improved. When a vibration test of a large aircraft is carried out, the first connecting body 10 can be used as an aircraft or a section thereof, and the second connecting body 20 can be used as an adapter of the vibration test, so that the vibration load can be effectively transmitted between the first connecting body and the second connecting body.
As shown in fig. 1 and 2, the inner diameter of the tapered hole 21 of the second connecting body 20 is gradually reduced in a direction in which the second connecting body 20 is directed toward the first connecting body 10; the first connecting body 10, the second connecting body 20, the tapered stud 30, the tapered nut 50 and the fastening nut 60 are all of a rotary structure. The minimum inner diameter of the tapered hole 21 and the inner diameter of the limiting through hole 12 are both larger than the outer diameter of the first cylindrical part 31, and the minimum outer diameter of the second tapered surface 51 is larger than the minimum inner diameter of the tapered hole 21, so that a space for the tapered nut 50 to move relative to the tapered stud 30 to the first connecting body 10 is reserved; during assembly, the tapered stud 30 can move in the tapered hole 21 and the limiting through hole 12, and the second connecting body 20 can be pushed to move relative to the tapered stud 30 by tightening the tapered nut 50, so as to ensure that the second tapered surface 51 is tightly matched with the tapered hole 21.
The limiting cylindrical surface 42 is tightly matched with the inner wall of the limiting through hole 12; moreover, the inner diameter of the limiting through hole 12 is larger than that of the connecting through hole 11, and the end surface of the conical matching structure 40 can abut against the end surface of the connecting through hole 11 close to the second connecting body 20, so that the transmission of multi-directional moment and vibration load between the conical matching structure 40 and the first connecting body 10 is facilitated.
The outer wall of the first cylindrical portion 31 is provided with an external thread for cooperation with the conical nut 50, and the second cylindrical portion 32 is provided with an external thread for cooperation with the fastening nut 60. Preferably, a precision threaded connection is used between the first cylindrical portion 31 and the cone nut 50.
In an embodiment of the present invention, the tapered fitting structure 40 includes a plurality of tapered fitting blocks 401, as shown in fig. 2 and 6, the plurality of tapered fitting blocks 401 are distributed circumferentially around the axis of the tapered stud 30, and each tapered fitting block 401 is provided with a first tapered surface 41 fitted to the tapered portion 33 and a limiting cylindrical surface 42 fitted to the inner wall of the limiting through hole 12, so that the tapered fitting block 401 is deformed to a smaller extent by a compressive force, and the fitting surfaces of the tapered fitting blocks 401 are tightly fitted.
Further, a circumferential gap 43 is arranged between two adjacent conical matching blocks 401, and in the process of connecting the connecting structure in place, under the action of connecting compression force, the conical matching blocks 401 can achieve self-adaptation to local profile characteristics of a connected piece through local position change and small deformation in the range of the reserved circumferential gap 43, so that the conical matching blocks 401 and the conical stud 30 and the conical matching blocks 401 and the first connecting body 10 are in axial and radial tight fit, broadband vibration loads on the conical stud 30 are effectively transmitted to the first connecting body 10, and the requirement on the machining accuracy of the structure matched with the conical matching blocks 401 is favorably reduced.
By providing the circumferential gap 43, a space is reserved for the position change and deformation of the tapered fitting block 401, and the size of the circumferential gap 43 can be set according to the characteristics of the overall size of the connection structure, the materials of the components, and the transmitted vibration load. To secure the fastening nut 60 andwhen the conical nut 50 and the locknut 80 are installed, in the self-adaptive position adjustment and deformation process of the conical matching blocks 401, the conical matching blocks 401 are uniformly loaded, local interference does not occur between adjacent conical matching blocks 401, and the conical matching blocks 401, the conical stud 30 and the through hole of the first connecting body 10 are designed to be coaxial; meanwhile, considering that the conical surface extrusion stress of the conical matching blocks 401 is appropriate and the circumferential deformation allowance is enough, the circumferential reserved gap of the conical matching blocks 401 is designed specifically according to the dimensional accuracy of the conical surfaces of the conical matching blocks 401 and the first connecting body 10, and the angle of the minimum part of the circumferential gap 43 between every two adjacent conical matching blocks 401
Figure BDA0002328596730000061
Indicating the size of the circumferential gap 43, the circumferential gap 43 is preferably sized in the range of 1-10 deg. when installed.
The clamping nut 60 provides the pressing force, in an embodiment of the present invention, the clamping nut 60 includes a first nut 61 abutting the first connecting body 10 and a second nut 62 abutting the first nut 61, and the clamping nut 60 has a double nut structure, which is advantageous for ensuring that a stable pressing force is provided. In assembling the connection, a torque wrench may be used to control the tightening force, the tightening torque of the first nut 61 is controlled at 100Nm, and the tightening torque of the cone nut 50 is controlled at 80Nm to ensure the reliability and consistency of the connection. Preferably, the connection structure includes a flat washer 63 provided between the fastening nut 60 and the first connecting body to uniformly transmit the pressing force of the fastening nut 60 to the first connecting body 10.
In one embodiment of the present invention, as shown in fig. 1 and 7, the connection structure includes an interface conversion sleeve 70, the interface conversion sleeve 70 includes a first sleeve portion 71 and a second sleeve portion 72 which are connected into a whole, and an outer diameter of the second sleeve portion 72 is larger than an outer diameter of the first sleeve portion 71; the first sleeve portion 71 is screwed to the connection through hole 11, and the first sleeve portion 71 is provided with a sleeve hole 711 through which the tapered stud 30 passes. As shown in fig. 1, the flat washer 63 and the fastening nut 60 are both disposed within the second sleeve portion 72. The sleeve hole 711 may be a circular hole, the second cylindrical portion 32 of the tapered stud 30 may freely move in the sleeve hole 711, and the interface conversion sleeve 70 may be detachably connected to the first connection body 10, so that the interface conversion sleeve 70 may be replaced to be adapted to the tapered stud 30. Preferably, the outer wall of the second sleeve part 72 is provided with external threads, so that the second sleeve part can be connected with an external sealing box, the structural sealing performance is improved through the external sealing box, the local rigidity is enhanced, the effective transmission of broadband vibration load is facilitated, and the operability of installing the fastening nut is ensured.
The first connection body 10 may generally be an integral part or a part of an aircraft or a section thereof, for example may be a cabin structure; the first connecting body 10 is generally large in size and difficult to process, and the interface conversion sleeve 70 is arranged, so that the simplicity of the structure of the first connecting body 10 is guaranteed, and the processing is facilitated.
In one embodiment of the present invention, the connection structure includes a locknut 80 connected to the tapered stud 30, and the locknut 80 abuts against the end surface of the tapered nut 50 facing away from the fastening nut 60 to further ensure the stability of the connection structure.
The connecting structure can be suitable for connecting the aircraft or the aircraft section with vibration test equipment, can also be suitable for connecting the aircraft or the aircraft section with ground transportation equipment, and can also be suitable for other fastening structures which need to transmit larger vibration loads. The single connecting structure can realize the connecting function and the load transfer function, and a plurality of connecting structures can be adopted to be matched to form multi-point connection.
Example two
The present invention provides a connection system, as shown in fig. 8, including: in the plurality of connection structures 1, the first connection bodies 10 of the connection structures 1 are integrally connected, and the second connection bodies 20 of the connection structures 1 are integrally connected. For example, the whole of the first connecting bodies 10 connected together is the cabin structure 2 or a part of the cabin structure 2; the second connecting body 20 is a vibration test adapting structure 3 or a part thereof.
The connection system shown in fig. 8 can be implemented using the following assembly method:
step S10: placing conical matching blocks 401, and uniformly reserving circumferential gaps 43 between the circumferential directions of the conical matching blocks 401;
step S20: installing an interface conversion sleeve 70, and using anti-loosening glue to prevent loosening of threads;
step S30: installing a tapered stud 30, passing through the second connecting body 20, the first connecting body 10 and the interface conversion sleeve 70, and sequentially installing a flat washer 63 and a tightening nut 60 on one side of the first connecting body 10, wherein the tightening torque of a first nut 61 in the tightening nut 60 is controlled according to 100 Nm;
step S40: repeating the step S10, the step S20 and the step S30, and installing the connecting structures of the rest connecting points;
step S50: the second connector 20 is butted with the first connector 10, a cone nut 50 is installed, and the tightening torque is controlled according to 80 Nm;
step S60: installing a locknut 80;
step S70: repeating the step S50 and the step S60, and installing the connecting structures of the other connecting points;
step S80: the clamping nut 60 is in turn tightened again with a tightening torque of 100 Nm.
Through this connected system, realize cabin body structure 2 and vibration test switching structure 3's multiple spot connection, be favorable to transmitting great vibration load steadily, reduce local stress, ensure the reliability of connection, this connected system has following characteristics:
(1) the relative position between the first connector 10 and the conical stud 30 is accurately positioned, the second connector 20 and the conical nut 50 and the conical stud 30 and the conical matching structure 40 are tightly matched through conical surfaces, and the conical nut 50 and the conical stud 30 and the conical matching structure 40 and the first connector 10 are tightly matched, so that a large action surface for transmitting torque is provided, and multi-directional broadband vibration load can be transmitted;
(2) the radial and axial tight fit between the first connecting body 10 and the tapered stud 30 and between the second connecting body 20 and the tapered stud 30 are realized through the tapered matching block 401, the tapered nut 50 and the fastening nut 60;
(3) the axial and circumferential tight fit of the connecting structure is realized through the design of the mounting sequence of the fastening nut 60, the back conical nut 50, the back anti-loose nut 80 and the fastening nut 60, and the design of the mounting and tightening torque of the fastening nut 60 and the mounting and tightening torque of the conical nut 50;
(4) the locking nut 60 adopts double-nut anti-loose design, and the conical nut 50 is matched with the anti-loose nut 80 to realize anti-loose of the connecting structure;
(5) the conical nut 50 is connected with the conical stud 30 through precise threads, the conical degrees of the conical nut 50 and the conical hole 21 of the second connector 20 are accurately controlled, the conical nut 50 is connected with the conical stud 30 through axial locking of the conical nut 50, and the conical nut 50 is compressed with the conical surface of the second connector 20, so that radial and axial positioning and tight fit of the conical nut 50, the conical stud 30 and the second connector 20 are realized while axial locking is realized, broadband vibration load on the second connector 20 is effectively transmitted to the conical stud 30, and the machining precision requirements on the first connector 10 and the second connector 20 and the installation difficulty of the connecting structure are reduced.
The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims (10)

1. A connecting structure, characterized by comprising:
the first connecting body is provided with a connecting through hole and a limiting through hole, and the inner diameter of the limiting through hole is larger than that of the connecting through hole;
the second connecting body is provided with a conical hole, and the conical hole, the limiting through hole and the connecting through hole are distributed in sequence;
the conical stud penetrates through the conical hole, the limiting through hole and the connecting through hole and is provided with a first cylindrical part, a conical part and a second cylindrical part which are sequentially connected;
the cone-shaped matching structure is arranged in the limiting through hole and is provided with a first cone surface matched with the cone-shaped part and a limiting cylindrical surface matched with the inner wall of the limiting through hole;
the conical nut is screwed on the first cylindrical part and provided with a second conical surface matched with the conical hole;
and the fastening nut is in threaded connection with the second cylindrical part and is abutted against the end face, deviating from the second connecting body, of the first connecting body.
2. The connection according to claim 1 wherein said tapered mating structure comprises a plurality of tapered mating blocks circumferentially distributed about the axis of said tapered stud.
3. The connection according to claim 2, wherein a circumferential gap is provided between adjacent two of said tapered mating blocks.
4. A connection according to claim 3, wherein the circumferential gap between two adjacent tapered mating blocks is in the range of 1 ° to 10 °.
5. The connection structure according to claim 1, wherein the tightening nut includes a first nut abutting the first connection body and a second nut abutting the first nut.
6. A connection according to claim 5, characterized in that the tightening torque of the first nut is controlled according to 100Nm and the tightening torque of the cone nut is controlled according to 80 Nm.
7. The connection according to claim 1, wherein the connection comprises a flat washer disposed between the set nut and the first connection body.
8. The connection structure according to claim 1, wherein the connection structure comprises an interface transition sleeve comprising a first sleeve portion and a second sleeve portion connected as one body, an outer diameter of the second sleeve portion being larger than an outer diameter of the first sleeve portion;
the first sleeve part is in threaded connection with the connecting through hole, and is provided with a sleeve hole for the tapered stud to pass through.
9. The connection according to claim 1, characterized in that the connection comprises a locknut connected to the conical stud, which is in abutment with an end face of the conical nut facing away from the clamping nut.
10. A connection system, comprising: a plurality of the connecting structures of any one of claims 1-9, the first connectors of each of the connecting structures being integrally connected and the second connectors of each of the connecting structures being integrally connected.
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US4167352A (en) * 1977-10-06 1979-09-11 Gebrueder Pletscher Apparatus for the releasable force-locking of two telescopic tubes, especially for clamping the steering housing tube in the steering fork tube of a bicycle
JPH10129702A (en) * 1996-11-06 1998-05-19 Jidosha Buhin Kogyo Co Ltd Handle
CN2410474Y (en) * 1999-12-17 2000-12-13 曾庆东 Cone-shape pressure sleeve self-centring mechanism
CN1625424A (en) * 2002-05-08 2005-06-08 克劳斯·伦哈特 Adjustable-length tube, in particular for poles
CN1605760A (en) * 2003-10-08 2005-04-13 利布赫尔水力挖掘机股份有限公司 Connection for bearing bolt
CN1926340A (en) * 2004-02-26 2007-03-07 威廉·温克勒 Connecting unit
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CN201209606Y (en) * 2008-05-15 2009-03-18 富国兴业股份有限公司 Expanding device of telescoping rod
CN101713427A (en) * 2008-10-08 2010-05-26 上海星昀国际贸易有限公司 Expansion connector for pipes
CN105423014A (en) * 2009-01-12 2016-03-23 克劳泽工业发展有限公司 Pipe Grip Ring
CN201632652U (en) * 2010-03-23 2010-11-17 南京工程学院 Main electric shaft installing and fixing structure based on elastic deformation of conical surface
CN104471256A (en) * 2012-03-06 2015-03-25 泰克努法斯特工业有限公司 High-capacity radial fit coupling bolts
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