EP2159332A2 - Pfahlramme - Google Patents

Pfahlramme Download PDF

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Publication number
EP2159332A2
EP2159332A2 EP20090168867 EP09168867A EP2159332A2 EP 2159332 A2 EP2159332 A2 EP 2159332A2 EP 20090168867 EP20090168867 EP 20090168867 EP 09168867 A EP09168867 A EP 09168867A EP 2159332 A2 EP2159332 A2 EP 2159332A2
Authority
EP
European Patent Office
Prior art keywords
mast
spike
hammer
post driver
rock
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.)
Withdrawn
Application number
EP20090168867
Other languages
English (en)
French (fr)
Inventor
Joseph Anthony Brennan
Michael Richard Brennan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2159332A2 publication Critical patent/EP2159332A2/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/26—Devices for erecting or removing fences
    • E04H17/261—Devices for erecting or removing fences for post and wire handling
    • E04H17/263—Devices for erecting or removing fences for post and wire handling for erecting posts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/08—Drop drivers with free-falling hammer

Definitions

  • This invention relates to post drivers for driving posts, such as are used in fencing, into the ground.
  • the invention is particularly related to post drivers of the type described in our previous patent application - publication no. EP1887167 and the improvements thereto.
  • a post driver including;
  • a support leg is mounted on the mast for movement between a retracted stored position and an extended ground-engaging position.
  • the support leg may conveniently be actuated by means of a ram mounted on the mast.
  • the support leg can be extended to the ground-engaging position prior to operation of the extracting ram for extracting the rock spike from the ground.
  • the spike holder is movably mounted on the mast for movement of the rock spike between a stored position away from the hammer and an in-use position beneath the hammer.
  • the rock spike is movable on the mast independently of the extraction ram for movement between the stored position and the in-use position. This advantageously makes the system very easy to operate and requires very little manual work by the operator.
  • the spike holder is pivotally mounted on the mast.
  • the spike holder is slidably mounted on the mast for movement between a raised position and a lowered position.
  • the spike holder has a sleeve which is slidably mounted on a vertical guide rail on the mast, the spike extraction ram being operably connected to the sleeve for movement of the sleeve along the guide rail.
  • the spike holder has a collar which is slidably engagable with the rock spike which is movable through the collar, the rock spike having a stop to limit downward movement of the rock spike through the collar.
  • the stop is formed by a flanged head of the rock spike.
  • the mast comprises a telescopic mast which is mounted on the support frame comprising a first mast part slidably mounted on a second mast part, and a mast ram is operable for sliding the first mast part relatively to the second mast part, the hammer is slidably mounted on the mast for movement between a raised position and a lowered position on the mast, the hammer being suspended on a lifting line attached to the hammer and passing around a mast pulley on the first mast part and attached to an anchor point on the second mast part such that relative movement of the mast parts moves the hammer on the mast, said line passing around a movable pulley intermediate the mast pulley and the anchor point, said movable pulley being movable on the second mast part for adjustment of the hammer position on the mast.
  • the movable pulley is movable by means of a ram.
  • the movable pulley is slidably mounted on the second mast part.
  • the movable pulley is mounted on a slide pin, the slide pin slidably engaging a complementary guide on the second mast part.
  • the guide comprises associated elongate guide slots in a pair of spaced-apart mounting brackets on the second mast part.
  • the invention provides a post driver, including:
  • the post driver 1 comprises a support frame 2 having means 3 for attachment to the three point linkage of a tractor vehicle.
  • a telescopic mast 5 is pivotally mounted on the support frame 2 by means of a pivot pin 6.
  • a mast tilt ram 7 extends between the support frame 2 and the mast 5 for tilting the mast 5 about the pivot pin 6 on the support frame 2.
  • Hydraulic controls 8 are provided for operation of various rams used in the post driver 1. Most of the hydraulic lines supplying the various rams have been omitted for clarity reasons.
  • a hammer 10 is vertically slidable on the mast 5 for driving a post 9 ( Fig. 9 ) located below the hammer 10 in use into the ground.
  • a cap 11 is independently slidable on the mast 5 beneath the hammer 10 for supporting a post 9 as it is being driven into the ground by the hammer 10.
  • the mast 5 comprises a lower fixed mast portion 14 and an upper movable mast portion 15 which is slidably mounted on the fixed mast portion 14.
  • a ram (not shown) is operable for sliding the movable mast portion 15 on the fixed mast portion 14.
  • a mast pulley 16 is mounted on top of the moving mast part 15.
  • a hammer lifting line 18 has an outer end 19 fixed to the hammer 10. The lifting line 18 passes around the mast pulley 16, over a guide pulley or pin 20, around a movable hammer adjustment pulley 21 and is secured to an anchor point 22.
  • the pin 20, pulley 21 and anchor point 22 are mounted on the fixed mast portion 14.
  • the movable pulley 21 is mounted on a ram 24 which is operable to move the movable pulley 21 between a fully raised position as shown in Fig. 6 and a fully lowered position as shown in Fig. 7 .
  • the ram 24 By operation of the ram 24 the movable pulley 21 can be located at any desired position between said fully raised position and fully lowered position.
  • the effective length of the hammer lifting line 18 and the position of the hammer 10 on the mast 5 can be adjusted to accommodate posts 9 of different height.
  • the mast 5 can be operated in the usual way, raising the moving mast part 15 on the fixed mast part 14 to raise the hammer 10 on the mast 5 for release to drop and drive a post 9 located beneath the hammer 10 into the ground.
  • a laterally projecting pin 26 on the movable pulley 21 slidably engages associated elongate guide slots 27 in a pair of spaced-apart parallel mounting brackets 28 on the fixed mast portion 14. This ensures the movable pulley 21 moves vertically.
  • the mast 5 is pivotally mounted on the support frame 2 by the pivot 6.
  • the pivot 6 includes a main pivot pin 30 rotatably supported in maintenance free self lubricating polymer bearings 31 carried in a bearing housing 32 which provide an extended and trouble free life.
  • a C-shaped mounting bracket 33 has an inner end 34 fixed to the mast 5 and outwardly extending arms 35 which engage the main pivot pin 30 for pivoting movement of the mast 5 on the mast main pivot pin 30.
  • a mounting bracket 36 for the mast tilt ram 7 has an inner end 37 attached to the bearing housing 32.
  • the mast tilt ram 7 has one end pivotally attached to a mounting pin 38 at an outer end 39 of the mounting bracket 36 and the other end pivotally connected to an associated support bracket 70 ( Fig. 2 ) on the mast 5.
  • the mounting bracket 36 forms portion of a side shift slide assembly which essentially comprises two spaced-apart parallel beams 72, 73 which are telescopically slidably mounted within complementary spaced-apart parallel sleeves 74, 75 respectively on the support frame 2. Outer ends of the beams 72, 73 are interconnected by a cross-member 76 extending therebetween.
  • the mounting bracket 36 is attached to the upper sliding beam 72.
  • a ram 77 ( Fig. 5 ) is mounted between an underside of the lower sleeve 75 and an underside of the lower sliding beam 73 and is operable for sliding the beams 72, 73 relatively to the sleeves 74, 75.
  • the post driver 1 incorporates a rock spike assembly 40.
  • the rock spike assembly 40 comprises a spike 41 having a flanged head 42.
  • the spike 41 is slidably supported in a spike holder 44 which essentially comprises a cylindrical collar.
  • the spike holder 44 is connected by brackets 46 to a sleeve 47 which is slidably mounted on a vertical guide rail 48.
  • the guide rail 48 is mounted between upper and lower support brackets 49 on the mast 5.
  • a cylindrical band 50 is rotatably mounted on the sleeve 47 and is connected to an extraction ram 52.
  • the extraction ram 52 has a cylinder 53 fixed on the mast 5.
  • a downwardly extending piston rod 54 is engaged with the band 50.
  • An hydraulic support leg 58 ( Fig. 17 ) is provided at a rear of the mast 5.
  • the support leg 58 essentially comprises a cylinder 59 with a downwardly depending piston rod 60 terminating in a foot plate 61.
  • the support leg 58 is operable to move the foot plate 61 between a raised inoperative position and a lowered ground-engaging position as shown in Fig. 17 .
  • Fig. 13 shows the rock spike 40 in the stored position.
  • the spike 41 and spike holder 44 can be pivoted on the guide rail 48 by means of the sleeve 47 into the in-use position shown in Fig. 14 in which the rock spike 40 is positioned beneath the hammer 10.
  • the extraction ram 52 is extended, sliding the band 50 downwardly on the guide rail 48, thus lowering the sleeve 47 and thus the spike holder 44 until the spike holder 44 engages the ground.
  • the sleeve 47 is further lowered by the ram 52 sliding the spike holder 44 downwardly on the spike 41.
  • the cap 11 is then lowered into engagement with the head 42 of the spike 41 and the hammer 10 is operated in the usual way for driving the spike 41 into the ground.
  • the hydraulic support leg 58 is lowered into engagement with the ground and the extraction ram 52 is operated retracting the piston rod 54 into the cylinder 53 raising the sleeve 47 and spike holder 44 which engages the flanged head 42 on the spike 41 to pull the spike 41 from the ground.
  • the hydraulic support leg 58 protects the post driver 1 from any high stresses which might occur during the spike extraction process.
  • the rock spike 40 arrangement is such that the hinging system employed allows the actual spike 41 to be manoeuvred independently of its extracting ram 52 and other heavy components. This makes the system very easy to operate and requires very little manual work by the operator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP20090168867 2008-08-27 2009-08-27 Pfahlramme Withdrawn EP2159332A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE20080694 2008-08-27

Publications (1)

Publication Number Publication Date
EP2159332A2 true EP2159332A2 (de) 2010-03-03

Family

ID=41361341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090168867 Withdrawn EP2159332A2 (de) 2008-08-27 2009-08-27 Pfahlramme

Country Status (2)

Country Link
EP (1) EP2159332A2 (de)
IE (2) IES20090656A2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012010133A3 (de) * 2010-06-09 2012-04-26 Schletter Gmbh Rammvorrichtung mit pfahlzuführer
GB2485918A (en) * 2011-01-14 2012-05-30 John Mowatt Bryce Post driver with slidable positioning means
GB2536266A (en) * 2015-03-11 2016-09-14 Mowatt Bryce John Improvements in and relating to post drivers
CN113756384A (zh) * 2020-06-04 2021-12-07 包尔机械有限公司 地下工程机和用于在地面中创建缝隙的方法
US11713591B2 (en) * 2017-06-29 2023-08-01 William R. Tanner Systems, devices, and/or methods for driving posts
GB2635605A (en) * 2023-09-14 2025-05-21 Brennan Fencing Ltd Post driver

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1887167A2 (de) 2006-08-10 2008-02-13 Joseph Anthony Brennan Verbesserungen bei und im Zusammenhang mit Pfahlrammen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1887167A2 (de) 2006-08-10 2008-02-13 Joseph Anthony Brennan Verbesserungen bei und im Zusammenhang mit Pfahlrammen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012010133A3 (de) * 2010-06-09 2012-04-26 Schletter Gmbh Rammvorrichtung mit pfahlzuführer
GB2485918A (en) * 2011-01-14 2012-05-30 John Mowatt Bryce Post driver with slidable positioning means
GB2485918B (en) * 2011-01-14 2013-01-02 John Mowatt Bryce Improved post driver
GB2536266A (en) * 2015-03-11 2016-09-14 Mowatt Bryce John Improvements in and relating to post drivers
GB2536266B (en) * 2015-03-11 2017-03-22 Mowatt Bryce John Improvements in and relating to post drivers.
US11713591B2 (en) * 2017-06-29 2023-08-01 William R. Tanner Systems, devices, and/or methods for driving posts
CN113756384A (zh) * 2020-06-04 2021-12-07 包尔机械有限公司 地下工程机和用于在地面中创建缝隙的方法
GB2635605A (en) * 2023-09-14 2025-05-21 Brennan Fencing Ltd Post driver

Also Published As

Publication number Publication date
IES20090656A2 (en) 2010-03-31
IE20090655A1 (en) 2010-03-31

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