Patent application number | Description | Published |
20080282690 | Rain hat for heavy construction equipment - A rain hat for heavy construction equipment is disclosed, which comprises a plate which corresponds to a shape of an outlet of the exhaust tube; a connection part which is formed at one end of the plate and is extended in a downward direction; and an elastic plate of which one end is connected with the connection part, and the other end is engaged with the exhaust tube, said elastic plate having a certain length, whereby the outlet of the exhaust tube, which is closed by means of the plate, opens as a discharge pressure overcomes an elastic force of the elastic plate when exhaust gas is discharged from the exhaust tube. | 11-20-2008 |
20090235879 | ENGINE ROOM FOR CONSTRUCTION EQUIPMENT - An engine room for construction equipment is provided, which can minimize emission of noise generated in an engine room due to driving of an engine and a ventilating fan to an outside of the engine room by absorbing the noise through a noise trap, and can improve the cooling performance of corresponding components by smoothing inhalation/discharge of an external air to/from the airtight engine room. The engine room for construction equipment includes a radiator cooling water for cooling the engine, a muffler discharging an exhaust gas from an engine to the atmosphere, a first noise trap installed in an inlet port to absorb noise generated in the engine room and emitted to an outside, a second noise trap installed in an outlet port to absorb the noise generated in the engine room and emitted to the outside, a radiator fan inhaling the external air through the first noise trap and making the inhaled external air pass through the radiator and the circumference of the engine, a discharge fan discharging the air in the engine room to the outside through the second noise trap, and an outer wall forming an airtight space for accommodating therein the engine, the muffler, the radiator fan, the hydraulic pump, and the discharge fan that generate the noise. | 09-24-2009 |
20100000211 | HYDRAULIC CONTROL CIRCUIT FOR EXCAVATOR - A hydraulic circuit for an excavator is provided, which includes first to third hydraulic pumps, a first traveling control valve and a first boom control valve successively installed along a first center bypass line from a downstream side of the first hydraulic pump, a second traveling control valve and a second boom control valve successively installed along a second center bypass line from a downstream side of the second hydraulic pump, a swing control valve connected between the third hydraulic pump and a swing motor to control the operation of the swing motor in accordance with an external valve switching signal, and a confluence line connected between a third center bypass line and a flow path of the second boom control valve to make hydraulic fluid from the third hydraulic pump join hydraulic fluid in a neutral position of the swing control valve. According to the hydraulic control circuit, the swing motor can be controlled independently by the fluid pressure being applied through the third hydraulic pump, and the speed of actuators can be kept without insufficiency of the flow rate during the swing composite operation through joining of the hydraulic fluid from the hydraulic pump and the hydraulic fluid from the working devices such as the boom, arm, and the like. | 01-07-2010 |
20100018798 | NOISE SILENCER FOR CONSTRUCTION EQUIPMENT - A noise silencer for construction equipment is used to minimize outward propagation of noises generated from an engine room. The noise silencer is mounted in air intake and/or discharge openings of an engine room, and includes a frame mounted in the one of the air intake and discharge openings of the engine room, and noise damping members fixed to the frame at uniform intervals, and each including a first member, which is disposed inside the engine room in a horizontal direction such that cooling air introduced from outside to inside of the engine room by operation of a cooling fan smoothly flows, and a second member, which is integrally formed with the first member and is disposed outside the engine room so as to be inclined upwardly at a predetermined inclination. | 01-28-2010 |
20100043420 | HYDRAULIC SYSTEM FOR CONSTRUCTION EQUIPMENT - A hydraulic system for construction equipment is provided, which can increase the driving speed of a corresponding working device by making hydraulic fluid of a hydraulic pump, which is added to the hydraulic system having two hydraulic pumps in the construction equipment, join hydraulic fluid on the working device side, and can intercept the supply of hydraulic fluid from the working device side to a traveling apparatus side when the working device and the traveling apparatus are simultaneously manipulated. | 02-25-2010 |
20100132347 | EXHAUST COOLING APPARATUS FOR CONSTRUCTION EQUIPMENT - An exhaust cooling apparatus for construction equipment, having a cooling fan taking external air into an engine room for heat exchange with a oil cooler and a radiator, and a blower flowing air out of the engine room to the atmosphere. In the apparatus, an outlet of an exhaust pipe for emitting exhaust gas from an engine is fixedly disposed toward a discharge direction of the blower. The discharge direction of the blower is upwardly vertical to the ground. The exhaust cooling apparatus is effective in preventing combustible matters from burning, or preventing plant lives from withering, due to hot exhaust gas around construction equipment such as excavator, by discharging the hot exhaust gas to the atmosphere after cooling it down through air flowing out of the engine room. | 06-03-2010 |
20100133042 | FOOTSTEP FOR EXCAVATOR - A footstep for an excavator is provided, in which the footstep, that is fixed to a track side frame so that an operator can get on/off a cab and so on therethrough, can be prevented from being damaged by rocks and so on during operation of the excavator in an inferior working environment. The footstep for an excavator, mounted on a track side frame of the excavator, includes an upper step composed of side plates formed on left and right sides to face each other, and a front plate formed in a body with the side plates and having through-holes formed on left and right sides thereof, to protect a head part of a fastening member, which fixes the footstep to the side frame, from an external impact; a fixing plate having both ends fixed to inner surfaces of the side plates to fix the upper step to the side frame by the fastening member that is fastened to pass through the through-holes; and a lower step fixed to lower ends of elastic pieces having upper ends fixed to the side plates, respectively. | 06-03-2010 |