WO2013160545A1 - Tendeur pour chenille - Google Patents

Tendeur pour chenille Download PDF

Info

Publication number
WO2013160545A1
WO2013160545A1 PCT/FI2013/050443 FI2013050443W WO2013160545A1 WO 2013160545 A1 WO2013160545 A1 WO 2013160545A1 FI 2013050443 W FI2013050443 W FI 2013050443W WO 2013160545 A1 WO2013160545 A1 WO 2013160545A1
Authority
WO
WIPO (PCT)
Prior art keywords
tightener
ratchet
track
gear
sleeve
Prior art date
Application number
PCT/FI2013/050443
Other languages
English (en)
Inventor
Heikki Pulkkinen
Original Assignee
Heikki Pulkkinen
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 Heikki Pulkkinen filed Critical Heikki Pulkkinen
Publication of WO2013160545A1 publication Critical patent/WO2013160545A1/fr

Links

Classifications

    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/32—Assembly, disassembly, repair or servicing of endless-track systems
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
    • 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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/22—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning sprocket chains, endless tracks, antiskid chains
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/101—C-clamps

Definitions

  • the invention relates to a tightener for a track according to the preamble of claim 1.
  • the invention particularly relates to a tightener for a track used in the handling of tracks of work machines.
  • various tighteners and other devices are commonly utilised.
  • the fitting of heavy steel tracks in place requires that the track is tightened relatively tight in order for the track assembly to operate in a correct way.
  • the tightening requires of the tighteners used applying a great pulling force between the ends of the track.
  • movement range large enough is required in order to be able to connect the ends of the track also in demanding terrain conditions.
  • Track pads of the track must be kept in the correct position during tightening in order to be able to install connectors between the ends of the track more easily.
  • the tensioning tool of document US2009183489 based on a screw represents a device type, which includes a fixed jaw and a jaw moving in guides. The jaw in the guides is pulled by the screw towards the fixed jaw.
  • a problem of this type of devices are sliding pairs of guides easily damaged in field conditions which, when wearing, cause pausing in operation and seizing of slide surfaces. Furthermore, the position of the track pad cannot be controlled sufficiently in order for the tightening of the track be smooth.
  • the object of the invention is to introduce a tightener for a track which solves the above problems, eliminates the defects of prior art and provides a tightener for a track which is good of its operating features and reliable in operation.
  • the object is provided with the arrangement according to the invention, which is characterised by what is presented in the claims.
  • the invention enables a tightener for a track, by means of which in field conditions, it is possible to effectively install tracks in place or remove them in connection with servicing.
  • the tightener for a track includes hooks, which are fitted in the threads of a worm shaft .
  • One half of the worm shaft includes a right-hand thread and the other half a left-hand thread.
  • Between the halves is fitted a ratchet handle by which the worm shaft is rotated.
  • the hooks are provided with a tightening means to lock the track pad and shaped such that the pad is oriented direct in connection with tightening.
  • the ratchet handle consists of a housing within which torsion elements are protected from getting dirty.
  • the torsion elements are most advantageously a gear arranged into connection with the worm shaft and a ratchet latch, which is a toothed segment suitable for contact with the gear.
  • the gear is fitted in the housing such that its outer race rests on the housing during tightening. Then, torsional load is divided more evenly, which decreases the loading of e.g. the worm shaft and its bearing.
  • the ratchet latch can be connected to the torsion arm of the ratchet handle or it can be a separate locking element pivoted to the body of the ratchet handle.
  • the ratchet handle includes a reversing sleeve by which the pivotedly fastened toothed segment is controlled to lock in the desired direction or to remain in the free position. The position of the toothed segment is ensured by a spring in connection with the device.
  • the invention enables a light and simple tightener for a track.
  • the torsion elements of the tightener for a track are located in the tightly closed housing where they are protected from damages and dirt.
  • the components of the tightener for a track are of simple construction and of low costs.
  • the gear and the toothed segment fitted for contact supply the worm shaft with the torsional force provided with the ratchet handle reliably, because there are several teeth in contact simultaneously.
  • Fig. 1 shows an oblique top view of a tightener for a track according to the invention.
  • Fig. 2 shows an oblique top view of the device of Fig. 1 set between track pads.
  • Fig. 3 shows a ratchet handle of the device according to the invention without a housing cover.
  • Fig. 4 shows a schematical and partially cut view of the construction of the ratchet handle of the device according to the invention.
  • Fig. 5 shows an alternative implementation of the ratchet handle in which a ratchet latch is integrated in the handle part of the ratchet handle.
  • Fig. 6 shows an alternative implementation of the ratchet handle in which the ratchet latch is a separate locking element.
  • Figs. 1-6 show a tightener for a track.
  • the tightener for a track consists of a left- hand hook 1, a right-hand hook 2, a worm shaft 3, and a ratchet handle 4.
  • the left-hand hook 1 consists of a hook part la and a nut part lb.
  • the nut part lb includes a threaded hole where there is a left-hand thread 3c.
  • the hook part la is provided with a tightening bolt lc which is perpendicular in relation to the threaded hole 3c.
  • the right-hand hook 2 consists of a hook part 2a and a nut part 2b.
  • the nut part 2b includes a threaded hole where there is a right-hand thread 3d.
  • the hook part 2a is provided with a tightening bolt 2c which is perpendicular in relation to the threaded hole 3d.
  • the nut parts lb, 2b of the hooks 1 and 2 are of the shape of a rectangular prism. Into connection with the nut parts are arranged hook parts la, 2a of the shape of letter C.
  • the tightening bolts lc, 2c are perpendicular in relation to an upper surface lbl, 2b2 of bolt parts lb 1, 2b2 of the hooks.
  • the upper surfaces lbl, 2b2 extend sufficiently far in the direction of the longitudinal axis of the worm shaft, whereby the ridges of the track pad cannot damage the worm shaft.
  • the hooks 1 and 2 are fitted to the worm shaft 3, one half 3a of which includes a left-hand thread and the other half 3b a right-hand thread. Between the halves 3a and 3b is non-rotatably fitted a gear 3e which is concentric in relation to the worm shaft 3.
  • the ratchet handle 4 includes a housing-like body 4a, a torsion arm 4c and a handle 4d at the end of the torsion arm. Within the body 4a is arranged a space for the gear 3e and a ratchet latch 4c2. The body 4a is closed with a cover 4a3 which is fastened to the body by fastening elements 4al and 4a2. The fastening elements are most advantageously a sunk screw 4al which is fitted to threaded holes 4a2 in the body 4a.
  • the worm shaft 3 is fitted to clearance holes 3al in the body 4a and the cover 4a3 such that the gear 3e remains within the housing-like body 4a.
  • the clearance holes 3al simultaneously operate as the bearings of the worm shaft, in connection with which there can be sealing elements (not shown in the figures).
  • the ratchet latch 4c2 consists of a toothed segment 4c2 suitable for contact with the gear 3e.
  • the toothed segment 4c2 is lightened from its middle section, that is, part of the segment teeth have been removed.
  • the segment 4c2 is fastened to the body 4a via pivots 4c3 such that the ratchet latch can swivel back and forth around the pivot 4c3. This enables the fact that the toothed segment 4c2 can be in contact with the gear 3e alternately from its both ends, whereby the direction of the working movement of the tightener for a track can be reversed.
  • the ratchet latch 4c2 can be connected to the torsion arm 4c of the ratchet handle or it can be a separate locking element pivoted to the body of the ratchet handle. In the latter case, the torsion arm 4c is fastened fixedly or form- fittingly to the body 4a.
  • the ratchet handle 4 includes a reversing sleeve 4b by which the pivotedly fastened toothed segment 4c2 is controlled to lock in the desired direction or to remain in the free position. The position of the toothed segment is ensured by a spring 4c4 in connection with the device.
  • the spring is most advantageously a pressure spring the springback factor of which is relatively small.
  • the spring 4c4 is fitted within the reversing sleeve 4b.
  • the reversing sleeve is fitted to the torsion arm 4c and locked in place by a locking element 4c 1, such as a roll pin.
  • the lower edge of the reversing sleeve 4b rests on the ratchet handle 4c2.
  • the lower edge of the sleeve 4b is shaped bevel such that, when rotating the sleeve 180 degrees around its longitudinal axis, the lower edge rests on either of the halves of the ratchet handle or is in a neutral position.
  • On the outer surface of the reversing sleeve is arranged a mark which shows the position of the sleeve in relation to the body of the ratchet handle.
  • the reversing sleeve 4b is provided with an inner shoulder on which is set to rest a compression spring 4c4 suitably longer than the sleeve of its unsupported length.
  • the sleeve, within which the spring is, is passed from the top to the torsion arm 4c 1 of the ratchet handle and locked in place by a locking element 4c 1.
  • the mutual distance between the centre of the gear 3e and the pivot point 4c3 of the toothed segment 4c2 is in an advantageous embodiment 0.8-1.0 times the reference diameter of the gear.
  • the reference diameter of the gear is in the range of 40-60 mm.
  • the gear 3e is fitted to the housing 4a such that its outer race rests on the inner surface of a space in the housing 4a during tightening. Then, loading resulting from the tightening of the ratchet handle is divided more evenly, thus lightening the loading of the other parts in the construction.
  • the device according to the invention operates in the following way.
  • the hooks 1 and 2 of the tightener for a track are rotated in the worm shaft 3 at a suitable location in order to be able to set the hooks in the track pads.
  • the pads are set to rest on the upper surfaces lbl, 2b 1 in the nut parts lb, 2b of the hook, after which the pads are locked in place by tightening bolts lc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne un tendeur pour chenilles qui comprend un crochet gauche (1), un crochet droit (2), un axe de rotation (3) qui comprend des filetages droit et gauche (3a, 3b) et une clé à cliquet (4). La clé à cliquet (4) comprend un logement (4a), un levier (4c), et une poignée (4d). À l'intérieur du logement (4a), un espace est ménagé pour un engrenage (3e) et un cliquet (4c2) qui font office d'éléments de torsion. Le logement (4a) est fermé au moyen d'une clé au moyen d'un élément de couverture (4a3) qui est attaché au moyen d'éléments d'attache (4a1, 4a2). L'axe de rotation (3) passe dans des orifices (3a1) du logement (4a) et de l'élément de couverture (4a3) de façon que l'engrenage (3e) soit à l'intérieur du logement (4a). Le cliquet (4c2) possède un segment à dents (4c2) qui s'engrène avec l'engrenage (3e), et le cliquet est allégé sur sa partie intermédiaire, certaines des dents du segment étant retirées. Le segment à dents (4c2) est fixé au logement (4a) au moyen d'une broche (4c3) de façon que le cliquet (4c2) puisse basculer, ce qui permet aux deux extrémités du segment à dents (4c2) de s'engrener par alternance avec l'engrenage (3e) et ainsi de changer la direction de travail du tendeur. L'engrenage (3e) est disposé dans le logement (4a) de sorte que, pendant le serrage, la coque extérieure de l'engrenage repose contre la surface intérieure du logement (4a) auquel cas, en raison de la force de frottement, la répartition de la contrainte soit uniforme et dégage l'autre partie du tendeur.
PCT/FI2013/050443 2012-04-25 2013-04-22 Tendeur pour chenille WO2013160545A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20120138A FI125293B (fi) 2012-04-25 2012-04-25 Telankiristin
FI20120138 2012-04-25

Publications (1)

Publication Number Publication Date
WO2013160545A1 true WO2013160545A1 (fr) 2013-10-31

Family

ID=49482267

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2013/050443 WO2013160545A1 (fr) 2012-04-25 2013-04-22 Tendeur pour chenille

Country Status (2)

Country Link
FI (1) FI125293B (fr)
WO (1) WO2013160545A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3047720A1 (fr) * 2016-02-17 2017-08-18 Vinci Construction Terrassement Procede et dispositif de remontage d'une chenille
CN114572320A (zh) * 2020-11-29 2022-06-03 哈尔滨北方防务装备股份有限公司 一种用于双节车的履带连接机构

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732789A (en) * 1926-03-18 1929-10-22 Wesley F Cornelius Belt clamp and tightener
US2332607A (en) * 1942-06-03 1943-10-26 Templeton Kenly & Co Endless tread track tool
GB1131048A (en) * 1964-11-12 1968-10-16 Tractel Sa A mechanical jack
US4222293A (en) * 1978-10-18 1980-09-16 Columbus Mckinnon Corporation Bi-directional wrench
US6161454A (en) * 1996-12-18 2000-12-19 Hand Tool Design Corporation Low cost ratchet wrench and method of assembly
US20050218387A1 (en) * 2004-03-30 2005-10-06 Burns Bros., Inc. Load binder with indicator
US20110000317A1 (en) * 2009-07-06 2011-01-06 Buqin Ruan Force measuring rigid load binder
US20110176884A1 (en) * 2010-01-16 2011-07-21 Buqin Ruan Rigid tie down
US20110253956A1 (en) * 2010-04-15 2011-10-20 Reinhard Smetz Tensioning device for chains

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732789A (en) * 1926-03-18 1929-10-22 Wesley F Cornelius Belt clamp and tightener
US2332607A (en) * 1942-06-03 1943-10-26 Templeton Kenly & Co Endless tread track tool
GB1131048A (en) * 1964-11-12 1968-10-16 Tractel Sa A mechanical jack
US4222293A (en) * 1978-10-18 1980-09-16 Columbus Mckinnon Corporation Bi-directional wrench
US6161454A (en) * 1996-12-18 2000-12-19 Hand Tool Design Corporation Low cost ratchet wrench and method of assembly
US20050218387A1 (en) * 2004-03-30 2005-10-06 Burns Bros., Inc. Load binder with indicator
US20110000317A1 (en) * 2009-07-06 2011-01-06 Buqin Ruan Force measuring rigid load binder
US20110176884A1 (en) * 2010-01-16 2011-07-21 Buqin Ruan Rigid tie down
US20110253956A1 (en) * 2010-04-15 2011-10-20 Reinhard Smetz Tensioning device for chains

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3047720A1 (fr) * 2016-02-17 2017-08-18 Vinci Construction Terrassement Procede et dispositif de remontage d'une chenille
CN114572320A (zh) * 2020-11-29 2022-06-03 哈尔滨北方防务装备股份有限公司 一种用于双节车的履带连接机构
CN114572320B (zh) * 2020-11-29 2024-05-10 哈尔滨北方防务装备股份有限公司 一种用于双节车的履带连接机构

Also Published As

Publication number Publication date
FI20120138A (fi) 2013-10-26
FI125293B (fi) 2015-08-14

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