SHIFT RESTRICTION MECHANISM IN WALKING TYPE WORK MACHINE

• Main Authors: MAEDA YOSHIO, OSHIMA AKIO
• Format: Patent
• Language: English; Japanese
• Published: 09.06.2016
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BYMECHANICAL FEATURES ONLY; CONTROLLING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICS; REGULATING; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To restrict the shift operation of a gear shift lever to a high-speed reverse position without increasing an operation load for an operator even in a steering wheel noninversion working state.SOLUTION: The shift restriction mechanism includes a first shift restriction member 24 for restricting the shift operation of a main gear shift lever 9 to a high-speed reverse position in a steering wheel inversion working state, and a second shift restriction member 25 for restricting the shift operation of the main gear shift lever 9 to a high-speed reverse position in a steering wheel noninversion working state. The first shift restriction member 24 is displaced to a shift restriction position according to the operation of a shift restriction switching operation tool 26 to a first operation position, the second shift restriction member 25 is displaced to a shift nonrestriction position, the first shift restriction member 24 is displaced to a shift nonrestriction position according to the operation of the shift restriction switching operation tool 26 to a second operation position, and the second shift restriction member 25 is displaced to a shift restriction position.SELECTED DRAWING: Figure 6 【課題】オペレータの操作負担を増大させることなく、ハンドル非反転作業状態においても、変速レバーの高速後進位置への変速操作を規制する。【解決手段】変速規制機構は、ハンドル反転作業状態における主変速レバー９の高速後進位置への変速操作を規制する第１変速規制部材２４と、ハンドル非反転作業状態における主変速レバー９の高速後進位置への変速操作を規制する第２変速規制部材２５とを備え、変速規制切換操作具２６の第１操作位置への操作に応じて、第１変速規制部材２４を変速規制位置に変位させるとともに、第２変速規制部材２５を非変速規制位置に変位させ、変速規制切換操作具２６の第２操作位置への操作に応じて、第１変速規制部材２４を非変速規制位置に変位させるとともに、第２変速規制部材２５を変速規制位置に変位させる。【選択図】図６