Title:
TREAD ADJUSTING DEVICE FOR TRACTOR
Document Type and Number:
Japanese Patent JPH01244901
Kind Code:
A
Abstract:
PURPOSE:To easily further properly adjust a tread by forming two r more protrusive streak units, tilting in one direction for a wheel axle, in the internal peripheral surface of a wheel rim while adapting one side of a regular polygonal adjusting collar to the internal peripheral surface of the protrusive streak unit. CONSTITUTION:A wheel rim 1 forms in its inside internal peripheral surface two or more protrusive streak units 3 tilting in one direction for a wheel axle 2. While a wheel disk 4 provides in its peripheral surface a pair of holding parts 5, 6 holding each protrusive streak unit 3 from both sides and a bolt 7 tightening these holding parts 5, 6 to each other. The bolt 7 has an external shape of regular polygon eccentrically placed for a bolt hole while provides an adjusting collar 9 adapting its regular polygonal one side to the internal peripheral surface of each protrusive streak unit 3. Thus when a tread is adjusted, the bolt 7 is loosened, thereafter the wheel rim 1 is turned for the wheel disk 4 and transversely moved to aside of extension or contraction by tilting the protrusive streak unit 3.
Inventors:
MURAKAMI YOSHIAKI
Application Number:
JP7221688A
Publication Date:
September 29, 1989
Filing Date:
March 25, 1988
Export Citation:
Assignee:
ISEKI AGRICULT MACH
International Classes:
B60B23/12; (IPC1-7): B60B23/12