WO2014162160A1 - Screw/non-threaded nut connection - Google Patents

Screw/non-threaded nut connection Download PDF

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Publication number
WO2014162160A1
WO2014162160A1 PCT/GR2014/000022 GR2014000022W WO2014162160A1 WO 2014162160 A1 WO2014162160 A1 WO 2014162160A1 GR 2014000022 W GR2014000022 W GR 2014000022W WO 2014162160 A1 WO2014162160 A1 WO 2014162160A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
nut
connection
temperature
nut connection
Prior art date
Application number
PCT/GR2014/000022
Other languages
French (fr)
Inventor
Milto NANOUSIS
Original Assignee
Nanousis Milto
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.)
Filing date
Publication date
Application filed by Nanousis Milto filed Critical Nanousis Milto
Publication of WO2014162160A1 publication Critical patent/WO2014162160A1/en

Links

Classifications

    • 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
    • F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
    • F16B4/006—Shrinkage connections, e.g. assembled with the parts being at different temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/067—Bolt tensioners
    • B23P19/068—Bolt tensioners by using heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B29/00—Accessories
    • B25B29/02—Bolt tensioners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/243—Flange connections; Bolting arrangements
    • 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
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/12—Hollow rivets; Multi-part rivets fastened by fluid pressure, including by explosion
    • 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
    • F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
    • 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
    • F16B5/0241—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 with the possibility for the connection to absorb deformation, e.g. thermal or vibrational
    • 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
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
    • F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
    • F16B5/0642—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship the plates being arranged one on top of the other and in full close contact with each other

Abstract

The screw/non-threaded nut connection consists of a screw (1) and a nut (2), which internally have electrical resistances or gaps. Initially, at room temperature d2 <d1. When we increase the temperature inside the screw (1) and the nut (2), the dimensions (L, R, d1, and d2) expand. When the nut (2) passes from dimension d1 (d2> d1), we lower the temperature of the nut (2) thereby retracting the inner diameter d2 and tightening it round d1. When we lower the temperature of the screw (1 too), during cooling, its length will shrink (P) tightening the sheets. To uncouple, we first increase the temperature inside the screw (1) and, having expanded the length (P) at connection levels, we increase the temperature inside the nut (2) at the same temperature levels with these of connection, so that d2 > d1 and then remove the nut (2) from the screw (1).

Description

DESCRIPTION
Screw/non-threaded nut connection
The invention relates to the connection made between screw and non-threaded nut, taking advantage of the dimensional change due to the increase or decrease of temperature inside. This connection can be used in a large number of engineering applications.
The connection between the screw and nut is one of the most important tools in the industry. The enormous achievements of man in industrial applications would not have happened without this valuable invention. Nevertheless, we can discern some disadvantages of this application. First of all, whereas due to globalisation of the economy, there should be a common global specification applied by everyone, there are currently various types of threads with different steps and expressed with different measuring sizes, resulting in disagreeable consequences for global cooperation. Furthermore, time and again, the threads themselves, due to their materials, type of application, or even the way of application, can suffer damages, with serious consequences incurred by the application.
Besides correcting the above shortcomings, the major advantage of this invention focuses on the potential of very good and stable connection due to the strongest forces in the world, which are the forces of contraction - expansion. The invention is described below by way of example and reference to the accompanying drawings.
Figure 1 shows in section the connection between two sheets (3, 4) made by means of the screw (1) and the nut (2). Inside the screw (1) we discern the electrical resistance (5), the electrical contacts (+, -). While inside nut (2) there is electrical resistance (6) with electrical contacts (+, -).
Figure 2 shows in section the connection between two sheets (3,4) made by means of screw (1) and nut (2). Inside screw (1) we discern gap (5), while inside nut (2) there is gap (6).
Figure 3 shows in section the connection between two sheets (3,4) made by means of the screw (1) and the nut (2). Inside the bolt (1) we discern two separate gaps (5-6), while inside the nut (2) there is gap (7).
In figure 1, the connection between the sheets (3,4) is effected by means of the screw (1) and the nut (2). Initially, the outer diameter (dl) of the screw (1) is smaller than the holes of the respective sheets (3,4) but larger than the inner diameter (d2) of the nut (2). We pass the screw (1) into the holes of the sheets (3,4). We join the electrical contacts of the screw (1) in a voltage, resulting in an increase of its temperature (in some desired level), and thus increase of its dimensions (dl, P). Since the diameter (d2) of the inner surface of the nut (2) is less than the outside diameter (dl) of the screw (1), we connect with an electrical voltage the contacts of the electrical resistance (6) of the nut (2) with a view to increasing its temperature and thus its expansion. When d2 dl, then we pass the nut (2) to the switching position so as to contact with the lower surface of the sheet (4) and remove the voltage at the ends of the nut (2) with a view to cooling and contraction. When the temperature of the nut (2) comes to ambient levels, the diameter (d2) will contract, resulting in strong tightening round the screw (1). We remind here that the dimension (L) of the screw (1) is still higher than its corresponding one in ambient temperature. It's time to remove the voltage from the contacts of the screw (1) with the effect of reducing the temperature, the contraction of the dimensions (P, L) and thus the tightening of the sheets (3,4).
To achieve decoupling of the application, we reverse the process. That is, we first supply current to the electrical resistance (5) of screw (1), causing dilation of the dimensions and thus the length, and later we give current to the electrical resistance (6) of nut (2) so as to cause expansion of diameter (cl2) until d2> dl so we can decouple nut (2) from screw (1).
In the screw/non-threaded nut connection, according to the procedure described above, instead of the electrical resistances (5,6 - figure 1) inside the screw (1) and the nut (2), we can respectively form two gaps (5, 6 - 2 project) and circulate heat (e.g. steam) through them, and so in this way achieve the expansion of the dimensions that is necessary for the connection of this type.
For tightening the sheets (3,4) with the help of screw/non-threaded nut connection, to avoid any problems in the connection or decoupling, due to heat transfer from the nut (2) to the screw (1), since they come in contact with each other, we form the gap (6- figure 3) at the bottom of the screw (1), so as to release through it a cooling means (e.g. freon). The whole procedure followed is the same as that described above.
It is worth mentioning that we cannot increase the temperature of the screw (1) and nut (2) beyond^some marginal temperatures, because it could change the internal structure of our material, changing accordingly their quality and characteristics, such as hardness and elasticity. These limit temperatures are determined each time by the type of material, the application and our requireme

Claims

1. The screw-nut connection includes screw (1) and nut (2) without threads at the interfaces between them, which we manage to tighten very firmly, with the help of temperature change in their inside.
2. The screw-nut connection, according to claim 1, is characterized by an electrical resistance (5) inside the screw (1).
3. The screw-nut connection, according to claim 1, is characterized by a gap
(5) inside the screw (1).
4. The screw-nut connection, according to claim 1, is characterized by two separate gaps (5,6) inside the screw (1).
5. The screw-nut connection, according to claim 1, is characterized by an electrical resistance (6) inside the nut (2).
6. The screw-nut connection, according to claim 1, is characterized by a gap
(6) inside the nut (2)
PCT/GR2014/000022 2013-04-02 2014-03-31 Screw/non-threaded nut connection WO2014162160A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR20130100192 2013-04-02
GR20130100192A GR20130100192A (en) 2013-04-02 2013-04-02 Unthreaded screw-and-nut connection

Publications (1)

Publication Number Publication Date
WO2014162160A1 true WO2014162160A1 (en) 2014-10-09

Family

ID=50685947

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GR2014/000022 WO2014162160A1 (en) 2013-04-02 2014-03-31 Screw/non-threaded nut connection

Country Status (2)

Country Link
GR (1) GR20130100192A (en)
WO (1) WO2014162160A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111791178A (en) * 2020-07-20 2020-10-20 珠海格力智能装备有限公司 Auxiliary mounting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1244289A (en) * 1969-01-23 1971-08-25 Siemens Ag A method of tightening or releasing bolts
JPS63248778A (en) * 1987-04-06 1988-10-17 株式会社　長野計器製作所 Method and tool for bonding ceramic members

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1244289A (en) * 1969-01-23 1971-08-25 Siemens Ag A method of tightening or releasing bolts
JPS63248778A (en) * 1987-04-06 1988-10-17 株式会社　長野計器製作所 Method and tool for bonding ceramic members

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111791178A (en) * 2020-07-20 2020-10-20 珠海格力智能装备有限公司 Auxiliary mounting device

Also Published As

Publication number Publication date
GR20130100192A (en) 2014-11-21

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