CN205806175U - A kind of nut connecting structure - Google Patents

A kind of nut connecting structure Download PDF

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Publication number
CN205806175U
CN205806175U CN201620732184.5U CN201620732184U CN205806175U CN 205806175 U CN205806175 U CN 205806175U CN 201620732184 U CN201620732184 U CN 201620732184U CN 205806175 U CN205806175 U CN 205806175U
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CN
China
Prior art keywords
packing ring
hole
nut
threaded hole
connecting structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201620732184.5U
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Chinese (zh)
Inventor
王智勇
赵鹏
刘国昌
汤计勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ji'nan China Ship Equipment Co Ltd
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Ji'nan China Ship Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Ji'nan China Ship Equipment Co Ltd filed Critical Ji'nan China Ship Equipment Co Ltd
Priority to CN201620732184.5U priority Critical patent/CN205806175U/en
Application granted granted Critical
Publication of CN205806175U publication Critical patent/CN205806175U/en
Active legal-status Critical Current
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Abstract

The utility model discloses a kind of nut connecting structure, including nut body, packing ring, housing screw, described nut body axial centre is provided with neutral threaded hole, described packing ring is provided with washer center hole, described neutral threaded hole overlaps with washer center axially bored line, main connecting bolt is connected with nut body by neutral threaded hole behind washer center hole, periphery in neutral threaded hole be provided with multiple axially through outer periphery threads hole, the axis in described outer periphery threads hole is uniform centered by the axis of neutral threaded hole, described housing screw coordinates with outer periphery threads hole, the end of housing screw coordinates with packing ring upper surface, described packing ring lower surface coordinates with the end face of connected piece.This utility model compact conformation, equipment installation, maintenance, dismounting are more convenient so that the connection of large-sized bolt fastening is easier, fastening force is more accurate, the topology layout of equipment is more reasonable, is particularly suited for the occasion that main equipment needs large-sized bolt and nut to connect, meets the market demand.

Description

A kind of nut connecting structure
Technical field
This utility model relates to threaded connector technical field, particularly relates to a kind of nut connecting structure.
Background technology
Various mechanical transmission of the prior art and equipment install the bolt and nut of widely used various types even Connecing, the bolt of prior art, nut connecting structure also exist some defects, such as in the position of connecting portion narrow space, if Standby characteristics of compact layout, when being connected by bolts and nuts, easily cause fastening, mount and dismount the most difficult, while set at machinery In standby unloading process, it is susceptible to the locked phenomenon of connecting bolt, directly affects equipment installment quality and normal maintenance.
It addition, for more and more to pass through large-scale spiral shell on the equipment such as high-power marine electromotor, mammoth pump, forcing press Bolt nut connects fastening, and the product specification of bolt and nut is done bigger and bigger, needs bigger tightening torque, generally requires special Dismantling device, to assembly or disassembly and safeguard and more change jobs and all bring difficulty.For overcoming the defect of above-mentioned existence, people are changing The design structure of kind equipment and bolt connection aspect are also gradually seeking new approaches solution problem above.
Utility model content
The purpose of this utility model is exactly for solving the problems referred to above that prior art exists, it is provided that a kind of nut connects knot Structure;This utility model compact conformation, equipment installation, maintenance, dismounting are more convenient so that the connection of large-sized bolt fastening is easier, Fastening force is more accurate, and the topology layout of equipment is more reasonable, and being particularly suited for main equipment needs threaded occasion, meets The market demand.
This utility model solves the technical scheme of technical problem:
A kind of nut connecting structure, including nut body, packing ring, housing screw, described nut body axial centre is provided with Neutral threaded hole, described packing ring is provided with washer center hole, and described neutral threaded hole overlaps with washer center axially bored line, main connection spiral shell Bolt is connected with nut body through behind washer center hole by neutral threaded hole, the periphery in neutral threaded hole be provided with multiple axially Through outer periphery threads hole, the axis in described outer periphery threads hole is uniform centered by the axis of neutral threaded hole, described compression spiral shell Nail coordinates with outer periphery threads hole, and the end of housing screw coordinates with packing ring upper surface, described packing ring lower surface and connected piece End face coordinates.
Described housing screw includes being located at the external thread part in axial centre position, major part tightens portion, optical axis compressed part, wherein External thread part one end is connected with the major part portion of tightening, the other end is connected with optical axis compressed part, the outside diameter of described optical axis compressed part Less than the path of external thread part, described optical axis compressed part passes outer periphery threads hole, the end of optical axis compressed part and packing ring upper surface Coordinate.
Described external thread part is connected by the transition circle conical surface with optical axis compressed part, and the outside diameter of described packing ring is with nut originally The outside diameter of body is equal.
The major part portion of tightening of described housing screw uses regular polygon structure.
The both ends of the surface of the neutral threaded hole of described nut body are provided with the little conical chamfering of outer imperial palace or R fillet.
The both ends of the surface in described outer periphery threads hole are provided with the conical chamfering that outer imperial palace is little.
It is provided with chamfering at the both ends of the surface cylindrical of described nut body.
The end of described optical axis compressed part is provided with the smooth chamfering of deburring.
Optical axis compressed part end is shiny surface.
Described nut body, packing ring, the surface of housing screw are provided with the manganese phosphate coating layer improving surface friction property.
The beneficial effects of the utility model:
This utility model compact conformation, equipment installation, maintenance, dismounting are more convenient so that the connection of large-sized bolt fastens more Simplicity, fastening force is more accurate, and the topology layout of equipment is more reasonable, and being particularly suited for main equipment needs large-sized bolt spiral shell Female occasion connected, meets the market demand.Due to applied when being connected between neutral threaded hole and the bolt of nut body Moment of torsion is smaller, and described neutral threaded hole can use less size, and what other outer periphery threads hole was arranged can more lean on The axial location of nearly neutral threaded hole, and the housing screw that size is less can be used, directly made by female thread screwing force On hard washer end face rather than directly act on the end face of connector, by main connecting bolt fastening force by multiple Housing screw decomposes.Thus in the case of the housing screw that use size is smaller, by the coordinative role of multiple housing screws, Ensure reliably to be connected firmly by connected piece, make again overall structure compacter.
2. utility model is sequentially tightened by tightening by diagonal angle of multiple housing screws successively and is stepped up screwing force Square, use multistage pretension, it is achieved high accuracy connects fastening, it is to avoid the excessive bolt failure, tight of causing of fastening force in prior art Gu power there will be loosening problem close to or smaller than bolt when bearing load.
The tension variation of nut the most of the present utility model is little, and packing ring keeps uniform pressure with body junction, prevents partially Turning, they are combined uniformly with connection holes, prevent bolt strained uneven, improve the reliability of connector.
4. this utility model uses hand-operated tools just can fasten the stud/bolt being relatively large in diameter easily, installs, dismantles Time, in less space, having only to a manual torque spanner, a people only needs a few minutes just can complete to install or remove work Measure, the set-up time of more than 60% can be saved than plain bolt, operate fool proof, it is not necessary to use hydraulic spanner, hydraulic pressure The specific purpose tool such as stretcher, heating rod, can produce the fastener shaft power meeting connection request, and can repeated multiple times use, economical Property is good, has easy and simple to handle, time saving and energy saving, the advantage of economic security.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is housing screw structural representation.
Detailed description of the invention
In order to be more fully understood that this utility model, explain in detail embodiment of the present utility model below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, a kind of nut connecting structure, including nut body 1, packing ring 2, housing screw 3, described spiral shell Maternal body 1 axial centre is provided with neutral threaded hole 11, and described packing ring 2 is provided with washer center hole 21, described neutral threaded hole 11 with Washer center axially bored line overlaps, diameter matches, and main connecting bolt passes through neutral threaded hole 11 and spiral shell behind washer center hole Maternal body 11 connects, the periphery in neutral threaded hole 11 be provided with multiple axially through outer periphery threads hole 15, described outer periphery threads The axis in hole 15 is uniform centered by the axis of neutral threaded hole 11, and described housing screw 3 includes being located at axial centre position External thread part 32, external thread part 32 one end tightens with major part that portion 31 is connected, the other end is connected with optical axis compressed part 33, described optical axis The diameter of compressed part 33 is less than the path in outer periphery threads hole 15, namely less than the path of external thread part 32, described external thread part 32 are connected by the transition circle conical surface 34 with optical axis compressed part 33, and described housing screw 3 coordinates with outer periphery threads hole 15, described optical axis Compressed part 33 is through outer periphery threads hole 15, and the end of optical axis compressed part coordinates with packing ring 2 upper surface, described packing ring 2 lower surface and The end face of connected piece coordinates.Due to the torque ratio that applied when being connected between neutral threaded hole and the bolt of nut body relatively Little, described neutral threaded hole can use less size, and what other outer periphery threads hole was arranged can be closer to middle screw The axial location of pit, and the housing screw that size is less can be used, thus using the smaller housing screw of size In the case of, by the coordinative role of multiple housing screws, it is ensured that be reliably connected firmly by connected piece, make again overall structure Compacter.
The outside diameter of described packing ring is equal with the outside diameter of nut body, naturally it is also possible to is slightly larger than or is slightly smaller than The outside diameter of nut body.
The major part portion of tightening of described housing screw 3 uses regular polygon structure.Such as positive six prism structures or four-prism Structure.
The both ends of the surface of the neutral threaded hole of described nut body 1 are provided with the conical chamfering 12 that outer imperial palace is little.
The both ends of the surface in described outer periphery threads hole 15 are provided with 45 ° of conical chamferings 14 that outer imperial palace is little, or are designed as R circle Angle.
It is provided with chamfering 13 at the both ends of the surface cylindrical of described nut body 1.
The end of described optical axis compressed part 33 is provided with the smooth chamfering 35 of deburring.
Optical axis compressed part 33 end is shiny surface.
Described nut body 1, packing ring 2, the surface of housing screw are provided with the manganese phosphate coating layer improving surface friction property.
Although the detailed description of the invention of utility model is described by the above-mentioned accompanying drawing that combines, but not to this utility model The restriction of protection domain, on the basis of the technical solution of the utility model, those skilled in the art need not pay creativeness Various amendments that work can be made or deformation are still within protection domain of the present utility model.

Claims (10)

1. a nut connecting structure, is characterized in that, including nut body, packing ring, housing screw, during described nut body is axial The heart is provided with neutral threaded hole, and described packing ring is provided with washer center hole, and described neutral threaded hole overlaps with washer center axially bored line, main Connecting bolt is connected with nut body by neutral threaded hole behind washer center hole, and the periphery in neutral threaded hole is provided with many Individual axially through outer periphery threads hole, the axis in described outer periphery threads hole is uniform centered by the axis of neutral threaded hole, described Housing screw coordinates with outer periphery threads hole, and the end of housing screw coordinates with packing ring upper surface, described packing ring lower surface with connected The end face of fitting coordinates.
2. a kind of nut connecting structure as claimed in claim 1, is characterized in that, described housing screw includes being located at axial centre The external thread part of position, major part tighten portion, optical axis compressed part, and its outer threaded part one end is connected with the major part portion of tightening, the other end Being connected with optical axis compressed part, the outside diameter of described optical axis compressed part is less than the path of external thread part, and described optical axis compressed part is worn Crossing outer periphery threads hole, the end of optical axis compressed part coordinates with packing ring upper surface.
3. a kind of nut connecting structure as claimed in claim 2, is characterized in that, described external thread part passes through with optical axis compressed part The transition circle conical surface connects, and the outside diameter of described packing ring is equal with the outside diameter of nut body.
4. a kind of nut connecting structure as claimed in claim 2, is characterized in that, the major part portion of tightening of described housing screw uses Regular polygon structure.
5. a kind of nut connecting structure as claimed in claim 1, is characterized in that, the two of the neutral threaded hole of described nut body End face is provided with the little conical chamfering of outer imperial palace or R fillet.
6. a kind of nut connecting structure as claimed in claim 1, is characterized in that, outside the both ends of the surface in described outer periphery threads hole are provided with The conical chamfering that imperial palace is little.
7. a kind of nut connecting structure as claimed in claim 1, is characterized in that, set at the both ends of the surface cylindrical of described nut body There is chamfering.
8. a kind of nut connecting structure as claimed in claim 2, is characterized in that, the end of described optical axis compressed part is provided with unhairing The smooth chamfering of thorn.
9. a kind of nut connecting structure as claimed in claim 2, is characterized in that, optical axis compressed part end is shiny surface.
10. a kind of nut connecting structure as claimed in claim 1, is characterized in that, described nut body, packing ring, housing screw Surface be provided with improve surface friction property manganese phosphate coating layer.
CN201620732184.5U 2016-07-12 2016-07-12 A kind of nut connecting structure Active CN205806175U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620732184.5U CN205806175U (en) 2016-07-12 2016-07-12 A kind of nut connecting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620732184.5U CN205806175U (en) 2016-07-12 2016-07-12 A kind of nut connecting structure

Publications (1)

Publication Number Publication Date
CN205806175U true CN205806175U (en) 2016-12-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620732184.5U Active CN205806175U (en) 2016-07-12 2016-07-12 A kind of nut connecting structure

Country Status (1)

Country Link
CN (1) CN205806175U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108481103A (en) * 2018-03-13 2018-09-04 宝鸡石油机械有限责任公司 The method for improving pushing tow screw small end face and gasket contact precision in breakaway nut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108481103A (en) * 2018-03-13 2018-09-04 宝鸡石油机械有限责任公司 The method for improving pushing tow screw small end face and gasket contact precision in breakaway nut

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