Abstract:
A travelling drive device for a work vehicle, which is provided on a travelling body to enable drivingly controlling of front and rear wheels, respectively. The travelling drive device is such that provided on the travelling body are an engine, a transmission and a hydraulic pump connected to the engine, and a first hydraulic motor driven by the hydraulic pump, right and left wheels of one of the front and rear wheels being selectively connected to an output side of the engine or an output side of the first hydraulic motor, second and third hydraulic motors, respectively, driven by the hydraulic pump being independently provided on suspension devices on right and left wheels of the other of the front and rear wheels and connected to the right and left wheels of the other of the front and rear wheels, respectively.
Abstract:
An air conditioning device comprising a humidity control equipment using a moisture absorbent, a thermoelectric heating and cooling apparatus utilizing a thermoelectric element, an air conditioning path formed by connecting in series a part of the humidity control equipment and a part of the thermoelectric heating and coooling apparatus and a regenerating path formed by connecting in series the other part of the humidity control equipment and the other part of the thermoelectric heating and cooling apparatus. An air conditioning system including a hybrid solar panel comprising a power generating portion utilizing solar energy and a heat collecting portion and a hybrid air conditioner having an adsorption type humidity control equipment and an electric type temperature controlling apparatus both disposed in an air conditioning path, wherein the heat collecting portion is connected to the regenerating paths of the adsorption type humidity control equipment and electric type temperature controlling apparatus, respectively, via a heat collecting path and the power generating portion is connected to a power receiving portion of the electric type temperature controlling apparatus.
Abstract:
A method of forming a wear-resistant padding layer which contains hard particles on a parent metal by supplying the hard particles to a molten pool which is formed on the parent metal by arc generated from an arc electrode. The hard particles are supplied to a molten metal portion, which is being pushed up in the molten pool by the arc, or a molten metal portion which is power flowing in the molten pool. Provided in a wear resistant composite material for scraping earth and rocks is a hard padding layer, which contains the hard particles and is formed on the parent metal to define stripes in an abrading direction of earth and rocks, or are a hard padding layer, which contains the hard particles and is formed on the parent metal, and a soft padding layer formed of a soft material, said hard padding layer and said soft padding layer, respectively, being alternately arranged in an abrading direction of earth and rocks to define stripes in a direction crossing the abrading direction of earth and rocks.
Abstract:
A method of power transmission in a mechanical/hydraulic type transmission, in which changeover is smoothly effected between hydraulic transmission and mechanical transmission. Provided are a hydraulic type transmission for transmitting to the outside (300) a mechanical power (Pm), which has been converted by a hydraulic motor (42), by engagement of a clutch (A), and a mechanical type transmission for transmitting to the outside (300) a mechanical power (Po) by engagement of a clutch (B). Upon changeover from the hydraulic type transmission to the mechanical type transmission, releasing of the clutch (A) is performed after engagement of the clutch (B) is started and before engagement of the clutch (B) is completed.
Abstract:
In bending a work, a temporary drive-in position of a ram is calculated from working conditions that are inputted from a working condition input section and information on the relationship of a spring back angle relative to a target bending angle of a work stored in a spring back data section, and the ram is driven to this temporary drive-in position, where a bending angle of a work is detected by means of an angle measuring unit. Following this, a final drive-in position of the ram is obtained from the bending angle so detected, relation ship of a ram drive-in amount relative to the work bending angle stored in a bending angle/drive-in amount data section and relationship of the spring back angle relative to the target work bending angle stored in the spring back data section, and then the ram is driven to a final drive-in position so obtained to thereby complete the bending process.
Abstract:
A variable compression ratio engine which can operate both in a Miller cycle and a normal cycle and which can produce a high output, reduce the generation of NOx and prevent the occurrence of knocking. In order to make this happen, the engine comprises an exhaust gas recirculating device comprising in turn a first cam shaft (10) provided with cans (11, 12, 13) for operating an intake valve (2) and exhaust valves (4, 5) and a second cam shaft (20) provided with cams (21, 22) for operating at least an intake valve (3) and an exhaust valve (5) to thereby recirculate a part of exhaust gas into intake gas.
Abstract:
A pilot pressure operated type directional control valve operating device comprises in combination a plurality of pilot pressure operated type directional control valves each of which comprises a spool fitted in a spool bore provided in a valve body and having a plurality of ports, valve blocks each provided on both sides of the spool with a pilot pressure receiving chamber and a spring, said spool being adapted to slidably shift to a neutral position and a pressure oil supply position by the spring and an operating pressure in the pilot pressure receiving chamber. An operating pressure detecting construction of the pilot pressure operated type directional control valve operating device is such that provided in the respective valve blocks are oil holes communicating between the valve blocks, and a shuttle valve for allowing the respective oil holes to communicate with the respective pilot pressure receiving chambers, and pressure detecting means is provided in another oil hole which communicates with one of the respective oil holes.
Abstract:
This invention relates to a method and an apparatus for diagnosing a fault quickly and accurately. Various inspection items for fault diagnosis are classified into sensor inspection items and input data inspection items. As to the sensor inspection items, the degree of abnormality is computed on the basis of a detection value of a sensor. As to the input data inspection items, the degree of abnormality is acquired by data input. The detection value of each sensor and the abnormality judgement result of each sensor are displayed during the fault diagnosing process, and the detection values of the sensors can be appropriately changed and modified from the display content. The degree of abnormality is displayed for each sensor inspection item computed, and the degree of abnormality can be appropriately changed and corrected from the display content. The degree of reliability is computed for each of the various causes of fault on the basis of the data representing the degree of association of various inspection items and various causes of fault and the data of the degree of abnormality obtained finally.
Abstract:
An image display method for a liquid crystal marker, which displays an image of a high sharpness even when the marking speed is high. When the image on the liquid mask is rewritten, all the picture elements (A, B) of the current image (P1) are made transparent, the electrodes of all the picture elements (A, B) are grounded or set equipotential, and the next image (P2) is then displayed. The step of making all the picture elements (A, B) transparent for image rewriting may be a step of making all the picture elements (A, B) opaque.
Abstract:
A construction machine comprising a first boom (1) rotatably mounted on a vehicle frame, a second boom (4) rotatably mounted on said first boom, a first boom cylinder (2) for connecting said vehicle frame (3) to said second boom (4) and a second boom cylinder (5) for connecting said second boom (4) to said first boom (1), wherein a target value at a leading end of a working machine is coordinate transformed into target angles of said first and second boom angles, wherein a target cylinder length of said first boom cylinder (2) is obtained from the coordinate transformed target angles of said first and second boom angles, and wherein said first boom cylinder (2) is driven based on this target cylinder length, whereby it is possible to simply and accurately drive and control each working machine of a new link mechanism by designating a position or a speed at a leading end of said each working machine.