US3832930A - Pins for mine and tunnel roofs and other structures - Google Patents

Pins for mine and tunnel roofs and other structures Download PDF

Info

Publication number
US3832930A
US3832930A US00351575A US35157573A US3832930A US 3832930 A US3832930 A US 3832930A US 00351575 A US00351575 A US 00351575A US 35157573 A US35157573 A US 35157573A US 3832930 A US3832930 A US 3832930A
Authority
US
United States
Prior art keywords
leading end
shank
pin
end portion
enlarged
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
US00351575A
Other languages
English (en)
Inventor
B Banerjee
S Black
B Meade
M Gangal
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.)
Lee Norse Co
Original Assignee
Lee Norse Co
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 Lee Norse Co filed Critical Lee Norse Co
Priority to US00351575A priority Critical patent/US3832930A/en
Priority to GB1096274A priority patent/GB1420553A/en
Priority to ZA00741672A priority patent/ZA741672B/xx
Priority to AU66596/74A priority patent/AU6659674A/en
Priority to CA195,517A priority patent/CA986341A/en
Priority to DE19742417896 priority patent/DE2417896A1/de
Priority to FR7413227A priority patent/FR2225614B3/fr
Application granted granted Critical
Publication of US3832930A publication Critical patent/US3832930A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F16B15/00—Nails; Staples
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts

Definitions

  • ABSTRACT Pins adapted to be driven into a structure such as a mine or tunnel roof without the necessity for the prior formation of pin receiving openings in the structure.
  • the pins each comprise an elongated shank having a leading end for providing a pin receiving opening in the structure during the driving of the pin thereinto, the leading end being blunt to prevent deviation of the pin from a desired path during its said driving, and the shank at such leading end including an enlarged leading-end portion of greater peripheral dimension than a thereafter following portion of the shank to provide an opening in the structure larger than such thereafter following shank portion.
  • the present invention relates to the provision of new and improved pins particularly adapted for insertion into a structure such as a mine or tunnel roof without the necessity for the prior formation of pin receiving openings in the structure.
  • U.S. Pat. No. 3,643,542 issued Feb. 22, 1972, discloses roof pins particularly adapted to form their ownopenings during insertion into a roof and, hence, avoiding the necessity that pin receiving openings be formed in the roof prior to the insertion of the pins.
  • the pins of such patent are believed to represent a major advance in the field of roof support.
  • the forward or leading ends of the pins that is, the ends of the pins acting to extend the lengths of the openings during the insertion of the pins
  • An object of the present invention is to provide a new and improved pin of the type set forth which is particularly constructed and arranged to prevent the aforesaid deviation from occuring during the driving of the pin.
  • Another object is to provide a new and improved pin of the type set forth which is particularly constructed and arranged to include a blunt, rather than a sharp pointed, leading end.
  • Another object is to provide a new and improved pin of the type set forth which is particularly adapted to safely and efficiently retain a roof of a mine or tunnel.
  • Another object is to provide a new and improved pin of the type set forth which, although particularly adapted for mine or tunnel roof support, is readily employable for use in other structures.
  • a pin adapted to be driven into a structure such as a mine or tunnel roof
  • a structure such as a mine or tunnel roof
  • a pin adapted to be driven into a structure such as a mine or tunnel roof
  • FIG. 1 is a side view of a mine or tunnel roof pin constructed in accordance with the present invention
  • FIG. 2 is a view of the forward or leading end of the pin shown in FIG. 1;
  • FIG. 3 is a side view of another mine or tunnel roof pin constructed in accordance with the invention.
  • FIG. 4 is a view of the forward or leading end of the pin shown in FIG. 3.
  • FIGS. 1 and 2 illustrate a mine or tunnel roof pin, designated generally as 10, which comprises an elongated shank 12 having a forward or leading end 14 and a rearward or trailing end 16.
  • the shank 12 may be, for example, of about 1 to 6 feet in axial dimension or length; and, although the shank 12 of the illustrated pin 10 is of circular crosssection, it will be understood that other suitable crosssections could be alternately employed.
  • the leading end 14 is the end of the pin 10 acting to form the longitudinal extension of the pin receiving opening during the driven insertion of the pin 10 into a mine or tunnel roof and is formed of blunt, flat, planar construction to prevent the beforedescribed deviation of the pin 10 from the desired straight path during the pin driven insertion.
  • the shank 12 includes a substantially enlarged, leading end portion 18 of peripheral dimension P and transverse or cross-sectional area substantially greater than the adjacent, immediately thereafter following portion 20 of the shank 12, to provide an opening in the roof substantially larger than the shank portion 20.
  • the shank l2 continuously tapers or gradually narrows in cross-section as it axially extends from its trailing end 16 to the enlarged leading end portion 18; and the shank trailing end 16 is of substantially the same cross-sectional area as the leadibg end portion 18.
  • the leading end portion 18 is of greater peripheral dimension and cross-sectional area than most, but not all, of the remainder of the length of the shank 12; however, as will be understood, in embodiments of the invention in which such remainder of the length of the shank 12 is of constant, uniform crosssection, the enlarged leading end portion 18 would be of peripheral dimension and cross-sectional area substantially greater than the entire remaining portion of the shank 12 to provide an opening in the mine roof substantially greater than said entire remaining portion of the shank.
  • the leading end portion 18 is of at least substantially constant or uniform cross-section throughout its length axially of the shank l2; and the leading end 14 extends at least substantially the full cross-sectional area of the leading end portion 18.
  • the area of the annular peripheral surface of the leading end portion 18 is predetermined or preselected to control the force required for driving the pin 10 into the mine or tunnel roof; and the length L of the leading end portion 18 axially of the shank 12 is predetermined or pre-selected to control the force required for such driving of the pin 10, the leading end portion 18 being as illustrated only a minor portion of the length of the shank 12.
  • the shank 12 carries an enlarged head 22 which, as illustrated, has an annular peripheral surface 24 continuously tapering from the shank trailing end 16 to the head end 26 of the pin 10, the head22 being maintained external to the mine or 3 tunnel roof after the pin insertion.
  • the peripheral surface 24 is preferably so tapered to reduce the probability of non-axial loading during driving of the pin 10,.such surface 24 could, if desired, be of other configuration.
  • the pin is of one-piece metal construction, thus forming the head 22 and shank 12 (including the leading end portion 18) unitary with one another, the metal construction of the leading end portion 18 preventing deformation of such portion 18 during driven insertion of the pin 10 into a roof.
  • the pin 10 could be formed of two-piece construction one piece comprising the head 22 and the there-adjacent section of the shank l2 and the other piece comprising the leading end portion 18 and the thereadjacent section or the remainder of the shank 12.
  • FIGS, 3 and 4 wherein parts similar to those of the beforedescribed pin 10 are designated by the corresponding reference numeral followed by the suffix a, illustrates a pin 10a in which the blunt leading end 14a of the enlarged leading end portion 18a includes an arcuate recess 28, Also, in the pin 10a the rearward end of the leading end portion 18a is joined to the forward end of the shank portion 20a by an annular, arcuate, outwardly extending portion 30 of the latter. Furthermore, as illustrated, the head 22a of the pin 10a is generally arcuate whereby the head end 26a of the pin 10a is arcuately contoured. The pin 10a is, however, in all other respects identical to the pin 10.
  • the pin 10 could be provided with a head of construction similar to that of the head 22a; and the pin 100 could be provided with a head of construction similar to that of the head 22.
  • the invention provides new and improved means for attaining all of the before described objects and advantages. It will moreover be understood that, although the pins provided by the invention are particularly adapted for use in a mine or tunnel roof, they are alternatively capable of employment in a mine or tunnel side wall or in construction work, or in other instances in which a pin is desired to be inserted in rock, concrete, masonry or other material.
  • a pin adapted to be driven into a structure such as for example the roof of a mine or tunnel, comprising an elongated shank having a leading end for providing a pin receiving opening in the structure during the driving of the pin into the structure, said leading end being blunt to prevent deviation of the pin from a desired path during the driving of the pin into the structure,
  • said shank at said leading end including an enlarged leading end portion of substantially greater peripheral dimension than the thereafter following portion of said shank to provide an opening in the structure substantially larger than such thereafter following shank portion, said enlarged leading end portion being of at least generally uniform cross-section throughout its length axially of said shank and the area of said blunt leading end of said shank being at least generally the same as the cross-section of said enlarged leading end portion, said enlarged leading end portion, axially of said shank, being only a minor portion of the length of said shank, said enlarged leading end portion being of larger crosssection than at least the major portion of the remainder of the length of said shank, and the area of the peripheral surface of said enlarged leading end portion being predetermined to control the force required for driving the pin into the structure.
  • a pin according to claim 1 wherein said enlarged leading end portion is constructed of metal to prevent its deformation during the driving of the pin into the strucutre.
  • a pin according to claim 1 wherein said shank is provided with an enlarged head at its end opposite to said leading end.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
US00351575A 1973-04-16 1973-04-16 Pins for mine and tunnel roofs and other structures Expired - Lifetime US3832930A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US00351575A US3832930A (en) 1973-04-16 1973-04-16 Pins for mine and tunnel roofs and other structures
GB1096274A GB1420553A (en) 1973-04-16 1974-03-12 Pins for mine and tunnel roofs and other structures
ZA00741672A ZA741672B (en) 1973-04-16 1974-03-13 Pins for mine and tunnel roofs and other structures
AU66596/74A AU6659674A (en) 1973-04-16 1974-03-14 Pins for mine and tunnel roofs
CA195,517A CA986341A (en) 1973-04-16 1974-03-20 Pins for mine and tunnel roofs and other structures
DE19742417896 DE2417896A1 (de) 1973-04-16 1974-04-11 Bolzen, z.b. zum eintreiben in eine stollen- oder tunneldecke oder dergl
FR7413227A FR2225614B3 (de) 1973-04-16 1974-04-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00351575A US3832930A (en) 1973-04-16 1973-04-16 Pins for mine and tunnel roofs and other structures

Publications (1)

Publication Number Publication Date
US3832930A true US3832930A (en) 1974-09-03

Family

ID=23381466

Family Applications (1)

Application Number Title Priority Date Filing Date
US00351575A Expired - Lifetime US3832930A (en) 1973-04-16 1973-04-16 Pins for mine and tunnel roofs and other structures

Country Status (7)

Country Link
US (1) US3832930A (de)
AU (1) AU6659674A (de)
CA (1) CA986341A (de)
DE (1) DE2417896A1 (de)
FR (1) FR2225614B3 (de)
GB (1) GB1420553A (de)
ZA (1) ZA741672B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899893A (en) * 1974-01-03 1975-08-19 Lee Norse Co Anchoring pin and method for structures such as mine and tunnel roofs and side walls
WO1984002375A1 (en) * 1982-12-11 1984-06-21 Hoelter Heinz Device for anchoring rocks

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345325A (en) * 1998-12-30 2000-07-05 Terrence Smith Blunt nail for wood

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189912099A (en) * 1899-06-10 1900-06-09 Matthew Simpkin A Spike for Securing Railway Chairs to Sleepers, Iron Work to Timber, and Fastening of Timbers.
US1542281A (en) * 1923-05-16 1925-06-16 George X Wendling Square-end nail or staple
US1589971A (en) * 1925-05-02 1926-06-22 King S Concrete Crosstie Corp Railroad spike

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189912099A (en) * 1899-06-10 1900-06-09 Matthew Simpkin A Spike for Securing Railway Chairs to Sleepers, Iron Work to Timber, and Fastening of Timbers.
US1542281A (en) * 1923-05-16 1925-06-16 George X Wendling Square-end nail or staple
US1589971A (en) * 1925-05-02 1926-06-22 King S Concrete Crosstie Corp Railroad spike

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899893A (en) * 1974-01-03 1975-08-19 Lee Norse Co Anchoring pin and method for structures such as mine and tunnel roofs and side walls
WO1984002375A1 (en) * 1982-12-11 1984-06-21 Hoelter Heinz Device for anchoring rocks

Also Published As

Publication number Publication date
AU6659674A (en) 1975-09-18
CA986341A (en) 1976-03-30
ZA741672B (en) 1975-02-26
FR2225614B3 (de) 1977-02-18
FR2225614A1 (de) 1974-11-08
DE2417896A1 (de) 1974-10-24
GB1420553A (en) 1976-01-07

Similar Documents

Publication Publication Date Title
US5018919A (en) Combined rigid profile and stretching roof bolt with expansion element
US3937122A (en) Expanding masonry attachment plug
ES276269U (es) Perno de anclaje.
DE3564473D1 (en) Expansion dovel
NO934068D0 (no) Ekspansjonsanker av metall og fremgangsmaate til dets fremstilling
US5344257A (en) Mine roof expansion anchor and bail element
US2171985A (en) Bolt anchor
GB1534840A (en) Expansible dowel
EP0437468A4 (en) Rock stabilizer
US3832930A (en) Pins for mine and tunnel roofs and other structures
ES8302848A1 (es) "un dispositivo de sujeccion a la roca para explotaciones de tuneles y subterraneas".
GB1392031A (en) Fixing devices for being driven into and anchored in material
GB1514579A (en) Expandable fastener
US3902399A (en) Concrete screw
US4407610A (en) Stabilizer for an earth structure
US3899893A (en) Anchoring pin and method for structures such as mine and tunnel roofs and side walls
GB1312212A (en) Fastener
US3555957A (en) Setting bolt or setting nail construction
GB1369487A (en) Pin for a hinge
US4892450A (en) Fastening element consisting of a tie bolt and a clamping wedge
US3906832A (en) Fixing devices for being driven into and anchored in material
GB1564655A (en) Expansible dowel
ATE225445T1 (de) Betonbewehrungsfaser
GB1511112A (en) Expansible dowel
US4307986A (en) Inserts