摘要:
The present invention relates to an apparatus and a method for limiting the vehicle speed of a working vehicle which can provide a smooth traveling condition during vehicle speed limit, and which can set a vehicle speed limit suited to environmental conditions. To this end, a vehicle speed control device (10) judges a vehicle speed limit traveling period when a vehicle speed signal is equal to or greater than a vehicle speed limit value, to calculate a corrected depressing stroke signal by a control gain based on a deviation value between the vehicle speed signal and the vehicle speed limit value so that the deviation value becomes smaller to output to an engine control device (40), and judges an accelerated traveling period, when the vehicle speed signal is smaller than the vehicle speed limit value and the corrected depressing stroke signal is larger than a depressing stroke signal, to output the depressing stroke signal to the engine control device (40).
摘要:
A mechanical braking system is provided for a vehicle having an electric propulsion system which is utilized for retard speed regulation. While the retard speed regulation is normally performed via electric braking, in some conditions the electric braking is not able to maintain a desired speed for the vehicle. In this condition, upon receipt of a signal from the electric propulsion system, the mechanical braking system is automatically activated so as to maintain the vehicle at the desired speed.
摘要:
A mechanical braking system is provided for a vehicle having an electric propulsion system which is utilized for retard speed regulation. While the retard speed regulation is normally performed via electric braking, in some conditions the electric braking is not able to maintain a desired speed for the vehicle. In this condition, upon receipt of a signal from the electric propulsion system, the mechanical braking system is automatically activated so as to maintain the vehicle at the desired speed.
摘要:
The present invention relates to a diagnosis apparatus which can plan a maintenance plan, a renewal plan, and the like of a self-propelled vehicle, by detecting a work load in addition to an engine condition. Accordingly, there is provided: engine rotating speed detecting means (11), for detecting a rotating speed N of the engine; fuel injection amount detecting means, for detecting a fuel injection amount q per rotation of the engine; loaded weight detecting means, for detecting the weight W of the loaded material; vehicle speed detecting means (14), for detecting the vehicle speed V; and trigger signal oscillating means (82), for oscillating a trigger signal d per predetermined time period to. Further, there is provided calculating means (83a), which receives each of the signals, which calculates a time period t for which both the rotating speed N having substantially the same value and the fuel injection amount q substantially the same value are maintained on the basis of the number n of the trigger signal d, which calculates an accumulative total fuel injection amount Q, and which successively calculates at least one of a fuel injection amount q1 per unit time and a conveying amount w1 per unit fuel injection amount.
摘要:
Performance data of components of a construction machine is measured by the steps of automatically operating the component mounted to the construction machine so as to satisfy one of a plurality of measurement conditions which are preliminarily set, automatically measuring performance data of the component which is preliminarily set under the above automatically operated state, and successively performing the same steps as those defined above with respect to remaining measurement conditions other than the above-mentioned one measurement condition, thus measuring the performance data of the component with one or more than one measurement conditions.
摘要:
A front and rear wheel load distribution control unit which provides excellent driving operability of a coupled vehicle and improves durability of a driving unit. To this end, the control unit is a front and rear wheel load distribution control unit for a coupled vehicle with a front vehicle (1) and a rear vehicle (3) being coupled, including an inter-axle differential lock (71) between a front axle (91) and a rear axle (92) for eliminating a rotational differential between the front axle (91) and the rear axle (92), and includes a crossing angle detecting sensor (33) for detecting a crossing angle of the front vehicle (1) and the rear vehicle (3), a front axle rotation sensor (31) for detecting rotation of the front axle (91), a rear axle rotation sensor (32) for detecting rotation of the rear axle (92), and control means (20, 20a, 20b, 36) for operating the inter-axle differential lock (71) in response to a crossing angle signal from the crossing angle detecting sensor (33), a rotation signal from the front axle rotation sensor (31), and a rotation signal from the rear axle rotation sensor (32).
摘要:
A brake diagnosis apparatus for a self-propelled vehicle can secure the safety of the brake and the productivity of mining and quarrying and can detect widely applicable data including the history. In order to achieve this, there is provided oil temperature detecting means (23) for detecting a cooling oil temperature d immediately after the oil cools a brake; holding time calculating means, for receiving the cooling oil temperature d from the oil temperature detecting means and for calculating a holding time t thereof; and a first adding means (31a), having stored therein a first matrix A, which is sectioned in vertical and horizontal directions at every predetermined cooling oil temperature area and at every predetermined holding time area, for receiving the cooling oil temperature d from any one of the oil temperature detecting means and the holding time calculating means, for receiving the holding time t from the holding time calculating means, for adding a frequency of occurrence value An to the area of the first matrix A which includes the cooling oil temperature d and the holding time t, and for freely outputting the added value to an outer portion.
摘要:
The present invention is a device for detecting abrasion of a brake for a vehicle, and is capable of accurately and surely detecting a time of abrasion. For this purpose, the device includes plates (3) engaged in an outer gear (2); discs (4), engaged in an inner gear (5); a piston (6), for bringing the plates (3) and the discs (4) into pressure contact to thereby brake a vehicle, a stroke sensor (26), for detecting an amount of displacement of the piston (6); an operation detecting device (27), for detecting an operation of a brake; and a computing unit (21), for computing amounts of abrasion of the plates (3) and the discs (4) based on detection signals from the operation detecting device (27) and the stroke sensor (26).
摘要:
A hydraulic drive system of a steerable wheel of a dump truck facilitates the attaching and detaching of a hydraulic motor and allows for a large hydraulic motor to be used. In the drive system, a wheel axle is rotatably supported within a receptacle seat supported on a yoke. The steerable wheel is rotatably mounted on the outer periphery of the receptacle seat. The steerable wheel and one end of the wheel axle are connected via a speed reducer. A motor casing 33 of a hydraulic motor is connected by bolts to the receptacle seat at an end of the seat remote from the steerable wheel so that the hydraulic motor can be attached to and detached from the receptacle seat by tightening and loosening the bolts.
摘要:
A planetary transmission includes a first gear set including a first sun gear and at least one first planetary gear in meshing arrangement with the first sun gear, a second gear set including a second sun gear and at least one second planetary gear in meshing arrangement with the second sun gear, a casing surrounding the first gear set and the second gear set, a first thrust washer between the first sun gear and the second sun gear, a second thrust washer between the second sun gear and the casing, and a lubrication system. The lubrication system comprises a passageway extending through the casing and placing a hollow interior of the second sun gear in fluid communication with a mesh point between teeth of the second sun gear and teeth of the at least one second planetary gear, such that when oil is forced from the mesh point the oil travels through the passageway, into the hollow interior of the second sun gear, and into contact with the first and second thrust washers.