摘要:
A construction machine that can limit consumption of battery electric power is provided. The construction machine includes: air-cooled heat exchangers 47, 48; a cooling fan 49 for generating cooling air for the heat exchangers 47, 48; a fan electric drive motor 50 that is driven by electric power of a battery 8 for rotating the cooling fan 49; an inverter unit 30 for drivingly controlling the fan electric drive motor 50; a lock lever 25 disposed at a boarding-alighting port and configured to be operated into an unlocked position and a locked position; and a lock valve 42 for making an operation of an operating device 27 or the like ineffective or the operating device inoperative when the lock lever 25 is operated into the locked position. The inverter unit 30 stops the fan electric drive motor 50 when the lock lever 25 is operated into the locked position.
摘要:
Disclosed therein is an apparatus for fixing hydraulic pipes for a construction machine having a hydraulic pipe clamp fixing a plurality of pipes to a boom structure, including: a lower clamp (20) having a mounting hole (21); a clamp position setting member (22) for fixing the lower clamp (20) to one side of the boom structure (100) through a clamp support member (23) coupled to the mounting hole (21); an upper clamp (30) coupled onto the lower clamp (20) and having an interference prevention groove (31) in which a head portion (23a) of the clamp support member (23) is placed; and vibration-proof members (41,42) attached to the interiors of the clamps (20,30) to absorb vibration of the pipe (10). When the pipes (10) are assembled or disassembled, the lower clamp (20) is fixed to the boom structure to set the positions of the pipe and the clamp, and thus the assembly is greatly improved. Also, the clamp position setting member (22) for the lower clamp (20) is protected by the upper clamp (10) without being exposed to the outside, and is maintained without interfering with the outside.
摘要:
A cooling device (20) mounted on a wheel loader (10) includes a radiator (22), an oil cooler (23), an after-cooler (24), air conditioner condenser (25) and a fuel cooler (26). An opening/closing mechanism (31) for pivoting the oil cooler (23) is configured to pivot the oil cooler (23) to a position at a predetermined opening angle about a pivot shaft (31 a) disposed in the vicinity of the right end of the front surface of the oil cooler (23). The rotary shaft (31a) is disposed while being slanted at an angle α with respect to the vertical direction in the back-and-forth direction of a vehicle body (11).
摘要:
A wheel loader includes: a cooling chamber (7) in which a cooling fan and a cooling device are housed; and a grill (12) through which a cooling air obtained by the cooling fan passes. The grill (12) includes a frame (16) provided by framing four side components and a ventilation portion (17) made of a punching metal and having a plurality of air intakes, the ventilation portion (17) being provided inside the frame (16). The ventilation portion (17) is a stepwise member having a vertically arranged plurality of steps provided by plastic working of the punching metal, the ventilation portion having a three-dimensionally curved surface bulging bidirectionally toward an outside of the cooling chamber (7).
摘要:
Disclosed is construction machine with improved safety. A high voltage cable (63(53)) for supplying power that connects a storage means to an electric drive means (21) that drives by means of power from a power generation means (12), which generates power by means of the drive of an engine, or from the storage means, which stores the power generated by the power generation means (12), is wired along the sides of a frame structural member (47) that protrudes in a vertical direction, whereby said frame structural member (47) serves as an upright wall to adequately protect the high voltage cable (63); and even in cases in which, for example, the construction machine strikes an obstruction, or the like, the high voltage cable (63) is adequately protected by said frame structural member (47).
摘要:
A cooling device comprises a cooling fan (21), a shroud provided on the outer circumferential side of the cooling fan (21), an inner circumferential wall portion (52) arranged on the shroud in the vicinity of the outer circumferential portion of the cooling fan (21), and an outer circumferential wall portion (53) provided around the inner circumferential wall portion (52). In this cooling device, the downstream side end of the outer circumferential edge of the cooling fan (21) in the air flow direction is located on the farther air flow downstream side than the downstream side end of the inner circumferential wall portion (52) in the air flow direction, and the angle (α) between a line (L1) connecting the downstream side end of the inner circumferential wall portion (52) in the air flow direction and the downstream side end of the outer circumferential wall portion (53) in the air flow direction and a line (L2) perpendicular to the air flow direction is within the range of 9-45 degrees on the cross-section of the inner circumferential wall portion (52) and the outer circumferential wall portion (53) along the air flow direction.