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NZ754137B2 - Liner bolt - Google Patents

Liner bolt Download PDF

Info

Publication number
NZ754137B2
NZ754137B2 NZ754137A NZ75413717A NZ754137B2 NZ 754137 B2 NZ754137 B2 NZ 754137B2 NZ 754137 A NZ754137 A NZ 754137A NZ 75413717 A NZ75413717 A NZ 75413717A NZ 754137 B2 NZ754137 B2 NZ 754137B2
Authority
NZ
New Zealand
Prior art keywords
head
stud
end portion
liner bolt
liner
Prior art date
Application number
NZ754137A
Other versions
NZ754137A (en
Inventor
Craig Oldnall
Original Assignee
Craig Oldnall
Filing date
Publication date
Application filed by Craig Oldnall filed Critical Craig Oldnall
Priority claimed from PCT/AU2017/051328 external-priority patent/WO2018102863A1/en
Publication of NZ754137A publication Critical patent/NZ754137A/en
Publication of NZ754137B2 publication Critical patent/NZ754137B2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • 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
    • 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
    • F16B35/044—Specially-shaped ends
    • 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
    • F16B35/044—Specially-shaped ends
    • F16B35/045—Specially-shaped ends for retention or rotation by a tool
    • 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
    • F16B35/06—Specially-shaped heads

Abstract

liner bolt (10) comprising an elongate stud (12) and a head (14) engageable with a first end (16) of the stud (12). The head (14) including an inwardly tapered first end portion (24) adjacent a first end (21) thereof. A threaded portion (18) is provided adjacent a second end (17) of the stud for receiving a nut (20). The first end (21) of the head (14) includes an inwardly tapered opening (28) having an internal thread (30) and the first end (16) of the stud (12) includes an inwardly tapered end portion (32) having an external thread (34) such that the first end (16) of the stud (12) is engageable in the opening (28) in the head (14). The time taken to drive in the bolts can be significant. As any time in which a mill is not operating results in increased costs, it is therefore important to ensure that the replacement of the liners can be achieved as efficiently as possible. When it is required to remove the liner bolt 10, a spanner or other suitable tool may be engaged with the nut 20. A tool is then engaged with the tool engagement 40 to rotate the stud 12 relative to the nut 20. Due to the shape of the head 14, the head 14 will not rotate within the liner plate 11 and the stud 12 therefore rotates relative to the head 14. This rotation unscrews the stud 12 from the head 14, thereby allowing the line plate 11 and head 14 to disconnect and fall away from the inner surface of the shell 13. The purpose of the tapered thread between the stud (12) and the head (14) within the liner plate (11) removes potential weakened areas, provides even distributed loads within the head, and allows the connection to be strong enough to support exerted loads. This allows the bolt to be removed without the need of an impact tool.

Claims (7)

  1. Claims 5 1. A liner bolt comprising: an elongate stud; a head having a first end engageable with a first end of the stud, the head including an inwardly tapered first end portion adjacent the first end thereof; and 10 a threaded portion provided adjacent a second end of the stud for receiving a nut; wherein the first end of the head includes an inwardly tapered opening having an internal thread and the first end of the stud includes an inwardly tapered end portion having an external thread such that the first end of the stud is 15 engageable in the opening in the head.
  2. 2. A liner bolt in accordance with claim 1, wherein the stud includes a tool engagement at the second end thereof for engagement by a rotating tool.
  3. 3. A liner bolt in accordance with claim 1 or 2, wherein the head includes 20 a first end portion which tapers inwardly towards the first end of the head and a second end portion having a constant transverse cross section.
  4. 4. A liner bolt in accordance with claim 3, wherein the second end portion of the head is obround in transverse cross section.
  5. 5. A liner bolt in accordance with claim 4, wherein the first end portion of 25 the head tapers inwardly in respect of height and not width.
  6. 6. A liner bolt in accordance with claim 5, wherein the first end portion is obround in transverse cross section throughout its length and circular in transverse cross section at the first end of the head. 8
  7. 7. A liner bolt in accordance with any one of claims 2 to 6, wherein the tool engagement comprises a square drive socket provided in the second end of the stud.
NZ754137A 2017-12-04 Liner bolt NZ754137B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2016905033A AU2016905033A0 (en) 2016-12-06 Liner Bolt
PCT/AU2017/051328 WO2018102863A1 (en) 2016-12-06 2017-12-04 Liner bolt

Publications (2)

Publication Number Publication Date
NZ754137A NZ754137A (en) 2024-08-30
NZ754137B2 true NZ754137B2 (en) 2024-12-03

Family

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