WO1992017363A1 - Dispositif de guidage pour chenilles - Google Patents

Dispositif de guidage pour chenilles Download PDF

Info

Publication number
WO1992017363A1
WO1992017363A1 PCT/US1991/002063 US9102063W WO9217363A1 WO 1992017363 A1 WO1992017363 A1 WO 1992017363A1 US 9102063 W US9102063 W US 9102063W WO 9217363 A1 WO9217363 A1 WO 9217363A1
Authority
WO
WIPO (PCT)
Prior art keywords
track
links
guiding
guide
portions
Prior art date
Application number
PCT/US1991/002063
Other languages
English (en)
Inventor
Michael Paul Larson
Alan Harold Lonn
Original Assignee
Caterpillar Inc.
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 Caterpillar Inc. filed Critical Caterpillar Inc.
Priority to PCT/US1991/002063 priority Critical patent/WO1992017363A1/fr
Priority to US07/678,274 priority patent/US5139317A/en
Publication of WO1992017363A1 publication Critical patent/WO1992017363A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/084—Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
    • B62D55/0847—Track blocking devices mounted on the frame; Track guides

Definitions

  • This invention relates generally to a track guiding apparatus for maintaining an endless track in engagement with guide rollers and more particularly to a guiding apparatus having a plurality of guide bars which are adapted to contact the hardened rail portions of the track links.
  • the track guide bars are a portion of a resilient suspension system for a track-type tractor and serve to preload the shear path suspension elements as well as guide the track.
  • the guide bars are positioned adjacent the ends of the track pins and engage the pins and the boss area of the track links when the track moves laterally. This engagement damages the ends of the pins and the boss area of the links and makes disassembly of the track assembly difficult. Such damage and wear on the pins and link bosses also increases track joint play, which decreases sealability of the track joints.
  • the present invention is directed to overcoming one or more of the problems as set forth above.
  • a track-type vehicle has a track roller frame and a moving undercarriage, including a plurality of interconnected links with each of the links having a rail portion
  • a track guiding apparatus for the vehicle includes a support bracket assembly secured to the vehicle and a replaceable guide bar secured to the support bracket assembly and adapted to contact the rail portions of the links when the links move laterally.
  • Self-laying track-type vehicles are supported and propelled by endless track assemblies, including a plurality of interconnected track links, pins, and bushings.
  • the links engage a plurality of rollers, and flanges associated with the rollers guide the moving track assembly. Guide bars spaced laterally from the pins and links are often used to prevent the track from separating from the rollers.
  • the subject invention provides track guiding members which guide the track through contact with the hard rail portions of the track links.
  • the pins, and the joints between the pins and the links suffer no damage from the track guides, thereby extending the useful life of the track seals and simplifying disassembly of the track.
  • Fig. 1 is a diagrammatic front elevational view, partly in section, of a track guide apparatus of the present invention, including portions of a track roller and a track assembly;
  • Fig. 2 is a diagrammatic view of a portion of the apparatus shown in Fig. 1, with the subject track guide in contact with a track link of the track assembly;
  • Fig. 3 is a diagrammatic view similar to
  • FIG. 2 showing a second embodiment of the present invention
  • Fig. 4 is a diagrammatic view similar to Fig. 2 showing a third embodiment of the present invention
  • Fig. 5 is a diagrammatic plan view of the track guide member shown in Figures l and 2.
  • a track guiding apparatus 10 for guiding the moving undercarriage components 12 of a track-type vehicle (not shown) , includes a support bracket assembly 14 and a plurality of replaceable guide bars 16.
  • the vehicle includes a track roller frame 18 which supports a plurality of track rollers 20 and the moving undercarriage components 12.
  • the track rollers 20 are rigidly secured to the roller frame 18.
  • the undercarriage components 12 include a plurality of track links 22, a plurality of bushings 24, a plurality of pins 26, and a plurality of track shoes 28.
  • the links 22 are interconnected by the pins 26 and the bushings 24 and the track shoes 28 are removably secured to the links 22.
  • Each of the links 22 has a seal assembly 30 and each of the pins 26 has an internal oil reservoir 32 which is closed by a plug 34.
  • the oil reservoir 32 is adapted to lubricate the surface 36 between the pin 26 and the bushings 24, and the seal assemblies 30 maintain the lubricant within the undercarriage components 12.
  • the bracket assembly 14 has first and second end portions 38,40 and first and second angled leg members 42,44.
  • the first and second end portions 38,40 are secured to the track roller frame 18 by a plurality of threaded fasteners 46.
  • Each of the guide bars 16 has a mounting surface 48 and first and second guiding portions 50,52.
  • Each of the guide bars 16 is adapted to be joined to one of the first and second leg members 42,44 of the support bracket assembly 14 at the mounting surface 48 by a plurality of threaded fasteners 54.
  • Each of the track links 22 has a hardened rail portion 56 which, during normal operation of the vehicle, is adapted to contact first and second hardened rim portions 58,60 of the track roller 20.
  • Each of the rim portions 58,60 has first and second radially extending flanges 62,64 which guide the track links 22 during normal operation of the vehicle.
  • the track links 22 can occasionally become disengaged from the confines of the track roller flanges 62,64 and move laterally toward the guide members 16. Such disengagement of the track links 22 is generally the result of irregular ground conditions, which allow the moving undercarriage components 12 to fall away from the track rollers 20, or debris which has become lodged within the undercarriage components 12.
  • the guiding portions 50,52 of the guide bars 16 are adapted to contact the link rail portions 56 and restrict further lateral movement of the track links 22.
  • Each of the guide bars 16 is rotatable on the support bracket assembly 14 to position one of the first or second guide portions 50,52 adjacent the link rail portions 56. This provides at least two wear areas on each of the guide bars 16.
  • Each of the guiding portions 50,52 has a contact surface 66 which contact the link rail portions 56 when the links 22 move laterally. Each of the contact surfaces 66 forms an acute angle "A" with the mounting surface 48.
  • the bracket assembly 14 has a straight leg portion 68 and a guide bar 70 is secured by threaded fasteners 72 to the leg portion 68.
  • the guide bar 70 has a mounting surface 74 and a contact surface 76 which is substantially parallel to the mounting surface 74.
  • the guide bar 70 has first and second angled wall portions 78,80, and is rotatable about the fasteners 72 to provide multiple wear areas. Angled wall portions 78,80 provide clearance witdh the track roller flange 62 when the guide bar 70 is rotated.
  • a guide bar 82 has a mounting surface 84 and a contact surface 86, and is secured to the leg portion 68 by a plurality of threaded fasteners 88.
  • the guide bar 82 has first and second angled wall portions 90,92 which intersect with the contact surface 86, and a body portion 94 which extends below the leg 68 of the bracket assembly 14.
  • the subject track guiding apparatus 10 is particularly useful with earthmoving and construction vehicles and more specifically, self-laying track-type vehicles. Because track-type earthmoving vehicles often operate in harsh environments, which include irregular ground conditions and debris, the track may fall away from the track rollers 20 or debris may be ingested into the moving undercarriage components 12. This debris, such as rocks, dirt, and tree limbs, can become lodged between the track rollers 20 and the track links 22. This causes the rail portions 56 of the links 22 to be displaced out of contact with the rollers 20 and the first and second flanges 62,64. The entire track assembly then moves laterally to either side, and if not restrained, derails from the guide rollers 20.
  • the subject track guiding apparatus 10 will restrict the lateral movement of the track links 22 and guide the undercarriage components 12 until the links 22 return to their normal operating position within the confines of the track roller flanges 62,64.
  • the ends of the pins 26 are not worn or damaged by the guide bars 16. Therefore, the pins 26 can be removed without difficulty when any of the undercarriage components 12 need servicing or replacing. Eliminating damage to the pins also extends the life of the seal assemblies 30, which helps maintain the lubricant within the oil reservoir 32. After prolonged operation of the vehicle, and repeated contact between the link rail portions 56 and the first guiding portions 50 of the guide bars 16, the first guiding portions 50 will become worn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)

Abstract

L'invention se rapporte à un dispositif de guidage (10) qui sert à guider les patins de chenilles (22) d'un système de train mobile (12) d'un véhicule à chenilles et qui est doté d'un châssis de galets de chenilles (18) et de plusieurs galets de chenilles (20). Un tel dispositif comprend un ensemble de potences de support (14) fixé au châssis de galets (18) ainsi que plusieurs barres de guidage (16) fixées à l'ensemble de potences de support (14). Chacune des barres de guidage (16) présente une surface de contact (50, 52) destinée à entrer en contact avec une partie de rail en métal trempé (56) des patins de chenilles (22), lorsque ces derniers (22) sont déplacés latéralement. Ce dispositif de guidage (10) pour chenilles empêche le déraillement des patins de chenilles (22) par rapport aux galets de chenilles (20), qui pourrait être causé par les irrégularités du sol ou par la présence de matériaux étrangers venant se loger entre les galets (20) et les patins (22).
PCT/US1991/002063 1991-03-29 1991-03-29 Dispositif de guidage pour chenilles WO1992017363A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1991/002063 WO1992017363A1 (fr) 1991-03-29 1991-03-29 Dispositif de guidage pour chenilles
US07/678,274 US5139317A (en) 1991-03-29 1991-03-29 Track guiding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1991/002063 WO1992017363A1 (fr) 1991-03-29 1991-03-29 Dispositif de guidage pour chenilles

Publications (1)

Publication Number Publication Date
WO1992017363A1 true WO1992017363A1 (fr) 1992-10-15

Family

ID=22225415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/002063 WO1992017363A1 (fr) 1991-03-29 1991-03-29 Dispositif de guidage pour chenilles

Country Status (1)

Country Link
WO (1) WO1992017363A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110525529A (zh) * 2019-08-29 2019-12-03 徐工集团工程机械有限公司 一种三角履带轮及其被动式导向系统和驱动齿导向装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2049693A (en) * 1935-09-14 1936-08-04 Caterpillar Tractor Co Track roller guard
US4229053A (en) * 1978-02-27 1980-10-21 Caterpillar Tractor Co. Track guide assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2049693A (en) * 1935-09-14 1936-08-04 Caterpillar Tractor Co Track roller guard
US4229053A (en) * 1978-02-27 1980-10-21 Caterpillar Tractor Co. Track guide assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110525529A (zh) * 2019-08-29 2019-12-03 徐工集团工程机械有限公司 一种三角履带轮及其被动式导向系统和驱动齿导向装置
CN110525529B (zh) * 2019-08-29 2024-04-02 江苏徐工工程机械研究院有限公司 一种三角履带轮及其被动式导向系统和驱动齿导向装置

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