US3742591A - Method of securing anchoring members in high-strength steel - Google Patents

Method of securing anchoring members in high-strength steel Download PDF

Info

Publication number
US3742591A
US3742591A US00091803A US3742591DA US3742591A US 3742591 A US3742591 A US 3742591A US 00091803 A US00091803 A US 00091803A US 3742591D A US3742591D A US 3742591DA US 3742591 A US3742591 A US 3742591A
Authority
US
United States
Prior art keywords
anchoring member
diameter
blind bore
strength steel
anchoring
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.)
Expired - Lifetime
Application number
US00091803A
Inventor
A Ritter
K Walser
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Application granted granted Critical
Publication of US3742591A publication Critical patent/US3742591A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49945—Assembling or joining by driven force fit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53839—Puller or pusher means, contained force multiplying operator having percussion or explosive operator

Definitions

  • a blind bore having a diameter slightly smaller than that of the diameter of the anchoring member is formed in the high-strength steel member, then, after aligning the anchoring member with the blind bore, it is driven into the bore using an explosive charge to supply the driving force.
  • the present invention is directed to a method of securing anchoring members in high-strength steel members,'and particularly, it is directed to a process of atcostly.
  • the rails have been provided with bores and the conductor cable straps with cylindrically shaped copper collars which fit into the bores and then an expansion bolt is driven into the collar to secure it within the bore.
  • This alternative method has the disadvantage that a large diameter bore is required which weakens the strength of the rail and, further, it has been found that a durable attachment of the cable strap cannot be insured using this method.
  • the primary object of the present invention is to provide an economically feasible method of attaching conductor cables to railroad rails which is safe in all respects and overcomes the disadvantages previously experienced in effecting such connections.
  • a blind hole is bored into the rail at the point at-which the cable is to be secured, preferably in the region of the rail web, then after aligning a threaded bolt with the blind hole, it is driven into the hole by means of an explosive-charge operated setting member.
  • the hole is bored so that it is approximately three-tenths to fivetenths mm, and preferably four-tenths mm, less than the diameter of the bolt.
  • the advantage is gained of using an economical explosive-charge bolt setting operation, although the strength of the rail steel is 70 to 80 kg/cm, that is, the steel strength is considerably higher than that which can normally be used with bolt setting members using an explosive charge for the driving force.
  • the blind hole bored into the rail is desirable to prevent faulty indications in rail testers.
  • FIG. 1 is a sectional representation of the drilling operation in accordance with the present invention
  • FIG. 2 is a sectional representation of theanchoring member setting operation in accordance with the present invention.
  • FIG. 3 is a sectional view illustrating a bolt driven into the railroad rail with a cable strap fully fastened to the rail by means of the bolt.
  • a railroad rail 1 supports a drill holding device 2, the device 2 consists of an inverted U-shaped clip 2a which presses a centering chuck 2b against the web 1a of the rail.
  • a drill 3 driven by a commercial drilling machine not shown, is guided in a centering sleeve or stop 4 positioned within the centering chuck 2b.
  • the centering sleeve 4 is withdrawn from the centering chuck and its place is taken by the front barrel por tion 6a of a setting member 6 which is securely held within the centering chuck.
  • a bolt 7 is driven into the blind bore 5.
  • FIG. 3 the bolt is shown fully inserted and secured within the rail web 1a with the current-carrying cable strap 8 securely mounted on the bolt between a pair of washers 9 held in place by a nut 10 threaded on the bolt.
  • the method of the present invention is not limited to the securement of anchoring members into railroad rails, but can be utilized wherever there is a problem of making attachments to highstrength steels.
  • a method for driving and securing an anchoring member into a high-strength steel member comprising the steps of drilling into said steel member a blind bore having a diameter which is slightly smaller than the diameter of said anchoring member to be inserted, aligning said anchoring member with said blind bore, positioning an explosive charge relative to said anchoring member in a location for driving said anchoring member into said blind bore, and detonating said explosive charge to drive said anchoring member into said blind bore.
  • said anchoring member is a bolt having a cylindrical shank and a flattened end, with said cylindrical shank having a diameter between 5 to 6mm.
  • said blind bore is formed with a depth of between 10 'to 12 mm. and with a diameter of between three-tenths to five-tenths mm. less than the diameter of said anchoring member.

Landscapes

  • Connection Of Plates (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Clamps And Clips (AREA)

Abstract

In fixing anchoring members in high-strength steel members, such as securing bolts in railroad rails, a blind bore having a diameter slightly smaller than that of the diameter of the anchoring member, is formed in the high-strength steel member, then, after aligning the anchoring member with the blind bore, it is driven into the bore using an explosive charge to supply the driving force.

Description

United States Patent [1 1 Ritter et al.
111 3,742,591 (451 July 3,1973
METHOD OF SECURING ANCHORING MEMBERS lN HIGH-STRENGTH STEEL Inventors: Adolf Ritter, Mauren; Karl Walser,
Waldteile,'both of Liechtenstein Assignee: Hilti Aktiengesellschaft Schann, Fuerstentum, Liechtenstein Filed: Nov. 23, 1970 Appl. No.: 91,803
Foreign Application Priority Data Dec. 8, I960 (iermuny ..l 196] 500.
US. Cl 29/525, 29/254, 227/10 Int. Cl 823p 19/02 Field of Search 29/42l E, 525, 254;
References Cited UNITED STATES PATENTS l2/l9l8 Mead .29/421 E UX 2,3l6,l l2 Temple 29/421 E X 3.()6l,834 l H1962 Temple ct al., 227/9 3,l8l,760 5/l965 Catlin et al. 227/10 FOREIGN PATENTS OR APPLICATIONS 494,597 lO/l938 Great Britain ..'29/5Z5 l ,336, l 47 7/ l 963 France 29/525 Primary Examiner-Charlie T. Moon Attorney-McGhw & Toren 57 1 ABSTRACT In fixing anchoring members in high-strength steel members, such as securing bolts in railroad rails, a blind bore having a diameter slightly smaller than that of the diameter of the anchoring member, is formed in the high-strength steel member, then, after aligning the anchoring member with the blind bore, it is driven into the bore using an explosive charge to supply the driving force.
2 Claims, 3 Drawing Figures PAIENIEDJULS m 3.742.591
SHEET 1 BF 2 F liq. 1
INVENTU ADOLF rune? KARL WALSER m a e/04764017.
ATTORN EYS PATENTED JUL 3 I975 SHEET 2 OF 2 INVENTO s ADOLF RITTE KARL WALSER A cj wEvs METHOD OF SECURING ANCHORING MEMBERS IN HIGH-STRENGTH STEEL SUMMARY OF THE INVENTION The present invention is directed to a method of securing anchoring members in high-strength steel members,'and particularly, it is directed to a process of atcostly.
In an alternative method the rails have been provided with bores and the conductor cable straps with cylindrically shaped copper collars which fit into the bores and then an expansion bolt is driven into the collar to secure it within the bore. This alternative method has the disadvantage that a large diameter bore is required which weakens the strength of the rail and, further, it has been found that a durable attachment of the cable strap cannot be insured using this method.
Therefore, the primary object of the present invention is to provide an economically feasible method of attaching conductor cables to railroad rails which is safe in all respects and overcomes the disadvantages previously experienced in effecting such connections.
In accordance with the present invention, initially, a blind hole is bored into the rail at the point at-which the cable is to be secured, preferably in the region of the rail web, then after aligning a threaded bolt with the blind hole, it is driven into the hole by means of an explosive-charge operated setting member. The hole is bored so that it is approximately three-tenths to fivetenths mm, and preferably four-tenths mm, less than the diameter of the bolt.
By means of the present invention the advantage is gained of using an economical explosive-charge bolt setting operation, although the strength of the rail steel is 70 to 80 kg/cm, that is, the steel strength is considerably higher than that which can normally be used with bolt setting members using an explosive charge for the driving force. The blind hole bored into the rail is desirable to prevent faulty indications in rail testers.
In accordance with the method of the present inven- I tion, it is possible to insure a safe current conduction between the threaded bolts and the rails as well as to provide an extraction value of about 2,000 kg by using a M10 threaded bolt which matches actual conditions and has a rounded or flattened front end and a cylindrical cross-section, and, further, where the shank diameter of the bolt is 5.3 mm and is driven into a blind bore having a diameter of 5 mm.
In drilling the hole or bore in the web of the rail, a known drill holding device with acentering stop is used. To facilitate the axial alignment of the bolt in the explosive charge actuated setting member with the blind bore, the centering stop or sleeve is simply removed from the drill holding device and the barrel of the setting member is inserted into the opening in the The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its 0perating advantages and specific objects attained by its uses, reference should be had to the accompanying drawing and descriptive matter in whichthere is illustrated a preferred embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWING In the Drawing:
FIG. 1 is a sectional representation of the drilling operation in accordance with the present invention;
FIG. 2 is a sectional representation of theanchoring member setting operation in accordance with the present invention; and
FIG. 3 is a sectional view illustrating a bolt driven into the railroad rail with a cable strap fully fastened to the rail by means of the bolt.
DETAILED DESCRIPTION OF THE INVENTION As shown in FIG. 1, a railroad rail 1 supports a drill holding device 2, the device 2 consists of an inverted U-shaped clip 2a which presses a centering chuck 2b against the web 1a of the rail. In the first step of the method according to the present invention, a drill 3 driven by a commercial drilling machine, not shown, is guided in a centering sleeve or stop 4 positioned within the centering chuck 2b.
After the completion of the blind bore 5, note FIG. 2, the centering sleeve 4 is withdrawn from the centering chuck and its place is taken by the front barrel por tion 6a of a setting member 6 which is securely held within the centering chuck. By firing an explosive charge within the setting member, a bolt 7 is driven into the blind bore 5. In FIG. 3 the bolt is shown fully inserted and secured within the rail web 1a with the current-carrying cable strap 8 securely mounted on the bolt between a pair of washers 9 held in place by a nut 10 threaded on the bolt.
It can be appreciated that the method of the present invention is not limited to the securement of anchoring members into railroad rails, but can be utilized wherever there is a problem of making attachments to highstrength steels.
What is claimed is:
1. A method for driving and securing an anchoring member into a high-strength steel member, said method comprising the steps of drilling into said steel member a blind bore having a diameter which is slightly smaller than the diameter of said anchoring member to be inserted, aligning said anchoring member with said blind bore, positioning an explosive charge relative to said anchoring member in a location for driving said anchoring member into said blind bore, and detonating said explosive charge to drive said anchoring member into said blind bore.
2. A method according to claim 1, wherein said anchoring member is a bolt having a cylindrical shank and a flattened end, with said cylindrical shank having a diameter between 5 to 6mm., and wherein said blind bore is formed with a depth of between 10 'to 12 mm. and with a diameter of between three-tenths to five-tenths mm. less than the diameter of said anchoring member.

Claims (2)

1. A method for driving and securing an anchoring member into a high-strength steel member, said method comprising the steps of drilling into said steel member a blind bore having a diameter which is slightly smaller than the diameter of said anchoring member to be inserted, aligning said anchoring member with said blind bore, positioning an explosive charge relative to said anchoring member in a location for driving said anchoring member into said blind bore, and detonating said explosive charge to drive said anchoring member into said blind bore.
2. A method according to claim 1, wherein said anchoring member is a bolt having a cylindrical shank and a flattened end, with said cylindrical shank having a diameter between 5 to 6mm., and wherein said blind bore is formed with a depth of between 10 to 12 mm. and with a diameter of between three-tenths to five-tenths mm. less than the diameter of said anchoring member.
US00091803A 1969-12-08 1970-11-23 Method of securing anchoring members in high-strength steel Expired - Lifetime US3742591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691961500 DE1961500A1 (en) 1969-12-08 1969-12-08 Fastening method

Publications (1)

Publication Number Publication Date
US3742591A true US3742591A (en) 1973-07-03

Family

ID=5753292

Family Applications (1)

Application Number Title Priority Date Filing Date
US00091803A Expired - Lifetime US3742591A (en) 1969-12-08 1970-11-23 Method of securing anchoring members in high-strength steel

Country Status (7)

Country Link
US (1) US3742591A (en)
CA (1) CA937033A (en)
CH (1) CH530884A (en)
DE (1) DE1961500A1 (en)
FR (1) FR2073030A5 (en)
GB (1) GB1308347A (en)
SE (1) SE389630B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476615A (en) * 1982-07-06 1984-10-16 John Cook Tool for removing and reapplying rivets
US4505018A (en) * 1982-09-08 1985-03-19 Jet Research Center, Inc. Underwater stud gun system and method for attaching an article to an underwater structure
US4637113A (en) * 1982-07-06 1987-01-20 John Cook Tool for removing and reapplying rivets
US4719688A (en) * 1986-01-08 1988-01-19 Mccrea Charles Manufacturing a plaque with an insert therein
JP2004353443A (en) * 2003-05-26 2004-12-16 Freyssinet Internatl (Stup) Method and system for overlocking at least one strand in fixed block
DE102005019877A1 (en) * 2005-04-28 2006-11-02 Airbus Deutschland Gmbh Clamping arrangement for joining two layers, comprises combined clamping- and adapter-sleeve
CN103084612A (en) * 2013-01-16 2013-05-08 安徽艾诺克工矿机械设备有限公司 Rail drilling auxiliary device of pneumatic rail drill

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2849139C2 (en) * 1978-11-13 1986-10-30 Hilti Ag, Schaan Method for setting fasteners in concrete
DE10121269A1 (en) * 2001-04-30 2002-10-31 Hilti Ag fastener

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1286381A (en) * 1917-06-14 1918-12-03 Ohio Brass Co Connecting stud and bond terminal.
GB494597A (en) * 1937-05-24 1938-10-28 Patria Mij Voor Ind Financieri Improvements in the setting or securing of wear or pressure resistance bodies in or on metal parts
US2316112A (en) * 1933-04-28 1943-04-06 Temple Velocity Equipment Inc Bonding device
US3061834A (en) * 1961-07-21 1962-11-06 Mine Safety Appliances Co Tool for removing signal bond terminals from rails
FR1336147A (en) * 1962-06-18 1963-08-30 Method and apparatus for extracting centering rings stuck in a ring hole
US3181760A (en) * 1956-03-29 1965-05-04 Remington Arms Co Inc Captive piston stud driver

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1286381A (en) * 1917-06-14 1918-12-03 Ohio Brass Co Connecting stud and bond terminal.
US2316112A (en) * 1933-04-28 1943-04-06 Temple Velocity Equipment Inc Bonding device
GB494597A (en) * 1937-05-24 1938-10-28 Patria Mij Voor Ind Financieri Improvements in the setting or securing of wear or pressure resistance bodies in or on metal parts
US3181760A (en) * 1956-03-29 1965-05-04 Remington Arms Co Inc Captive piston stud driver
US3061834A (en) * 1961-07-21 1962-11-06 Mine Safety Appliances Co Tool for removing signal bond terminals from rails
FR1336147A (en) * 1962-06-18 1963-08-30 Method and apparatus for extracting centering rings stuck in a ring hole

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476615A (en) * 1982-07-06 1984-10-16 John Cook Tool for removing and reapplying rivets
US4637113A (en) * 1982-07-06 1987-01-20 John Cook Tool for removing and reapplying rivets
US4505018A (en) * 1982-09-08 1985-03-19 Jet Research Center, Inc. Underwater stud gun system and method for attaching an article to an underwater structure
US4719688A (en) * 1986-01-08 1988-01-19 Mccrea Charles Manufacturing a plaque with an insert therein
JP2004353443A (en) * 2003-05-26 2004-12-16 Freyssinet Internatl (Stup) Method and system for overlocking at least one strand in fixed block
US20050005570A1 (en) * 2003-05-26 2005-01-13 Freyssinet International (Stup) Method of overlocking at least one strand in an anchoring block and system for overlocking at least one strand in an anchoring block
US7614134B2 (en) * 2003-05-26 2009-11-10 Freyssinet Method of overlocking at least one strand in an anchoring block and system for overlocking at least one strand in an anchoring block
JP4593149B2 (en) * 2003-05-26 2010-12-08 フレイシネ Method for overlocking at least one strand in a fixed block and system for overlocking at least one strand in a fixed block
DE102005019877A1 (en) * 2005-04-28 2006-11-02 Airbus Deutschland Gmbh Clamping arrangement for joining two layers, comprises combined clamping- and adapter-sleeve
DE102005019877B4 (en) * 2005-04-28 2015-06-11 Airbus Operations Gmbh Clamping-fixing unit for clamping at least two component layers between two printing plates and a combined clamping-drilling process
CN103084612A (en) * 2013-01-16 2013-05-08 安徽艾诺克工矿机械设备有限公司 Rail drilling auxiliary device of pneumatic rail drill

Also Published As

Publication number Publication date
CA937033A (en) 1973-11-20
CH530884A (en) 1972-11-30
GB1308347A (en) 1973-02-21
DE1961500A1 (en) 1971-06-09
SE389630B (en) 1976-11-15
FR2073030A5 (en) 1971-09-24

Similar Documents

Publication Publication Date Title
US3742591A (en) Method of securing anchoring members in high-strength steel
US3817146A (en) Bolt hole aligner and inserting tool
AU2007213932B2 (en) Gun rivet
AU545968B2 (en) Rock bolt
US4815193A (en) Rivet installation tool and method of installing rivets
US5846041A (en) Nonrotating, self-centering anchor assembly for anchoring a bolt in a borehole
EP0499580A3 (en) Extraction tool
US2276259A (en) Explosively actuated punch
US2316112A (en) Bonding device
US2751809A (en) Hollow rivet and expander pin having curved engaging surfaces
GB788962A (en) Method of and apparatus for heading tubular members
JPS6453771A (en) Method and equipment for welding piping
US4852231A (en) Piston wrist pin installation and removal device and method of using
ES8503064A1 (en) Method of and apparatus for installing solder bolts in rock bolting
ES445171A1 (en) Expanding bolt-like fastening means
CN210118157U (en) Self-unlocking anti-breaking anchor cable lock with adjustable center for mining
GB2109433A (en) Attachment assembly
US4914933A (en) Installation and swaging tool for inserts
CN100359114C (en) Method of overlocking at least one strand in an anchoring block and system for overlocking at least one strand in an anchoring block
CN114526026B (en) Horizontal Kong Dalao ware puts in advancing device
EP1447572A1 (en) Wire fastening and method of assembly
CN209681714U (en) A kind of boring grab for car puller hook tongue piece hole
US3558191A (en) Means for applying wedging forces to minerals and other bodies
CN105150135A (en) Automatic chuck controlled by external source stroke
NO172409B (en) PROCEDURE FOR RECOVERY OF MOUNTING ELEMENTS