Dai-ichi Electric Co., Ltd.

Mitsui Engineering and Shipbuilding Company Limited

The Tsurumi-seiki Co., Ltd.

Kirin Beer Kabushiki Kaisha

Nkk Corporation

Dai-ichi Electric Kabushiki Kaisha

Hiroshi Satoh

Shuji Ueki

Shogo Miyajima

Kenzo Hasegawa

Hirohumi Doi

Morikatsu Horino

By Kazue Matsuo, Heir

Giichi Matsuo, Deceased

By Sachiko Matsuo, Heir

By Yayoi Matsuo, Heir

To provide a winding mechanism and a trawling apparatus capable of eliminating an excessive tension or slack generated in a wire wound around a drum and keeping the tension or wire length of the wire constant. A winding mechanism with tension control function includes a reversibly rotatable liquid-pressure motor rotating a drum having a wire wound therearound, a liquid-pressure pump coupled directly with the liquid-pressure motor and supplying hydraulic oil, and an electric motor rotating to drive the liquid-pressure pump. The winding mechanism further includes a control unit controlling a torque of the electric motor based on a variation in load current of the electric motor and winding off or winding up the wire to keep the tension of the wire at a set value.

Winding mechanism with tension control function and trawling apparatus

A hoisting device can be small-sized and energy can be saved. A hoisting deviceaccording to the present invention has a hoistand a control unit. The hoistrotates a drumhaving a wirewound thereon by an oil pressure motorrotatable in normal and reverse directions. To the oil pressure motor, operating oil is supplied from an oil pressure pump. The oil pressure pumpis a two-way discharge fixed capacity type, and rotated by a servomotor. An acceleration/displacement transducerin the control unitfinds a moving direction and a moving speed of a wire hanging point in the vertical direction from an output signal of an acceleration sensor. The control unitoutputs a drive control signal of the servomotoraccording to a paying-out speed or a rolling-up speed of the wireoffsetting the vertical motion of the wire hanging point caused by the heaving of a hull based on a speed instruction Vi of the paying-out or rolling-up speed of the wire, a detected signal of the acceleration sensorand a detected signal of a wire speed sensor

Hoisting device with vertical motion compensation function

A heavy burden transport vehicle comprises a plurality of wheels and hydropneumatic units each provided for each of wheels for driving each wheel, each hydropneumatic unit having a hydropneumatic motor for rotating the wheel, a hydropneumatic pump for feeding compressed operating fluid to the hydropneumatic motor, and a motor for driving the hydropneumatic pump.

Heavy burden transport vehicle

A flow passage closing mechanism of a beverage pouring apparatus for supplying the beverage to a dispenser by pushing the beverage in the keg due to the pressure of gas introduced therein. The mechanism includes a first connecting portion to be connected to the key, a descending tube connected to the first connecting portion, a floating ball movably inserted into the descending tube, a valve seat formed at a lower end portion of the descending tube, a separating mechanism for lifting the floating ball form the valve seat, and a second connecting portion to be connected to the dispenser. When beverage in the keg is used up, the flow passage closing mechanism closes the flow passage of the beverage pouring apparatus by pushing the floating ball to the valve seat. The flowing path is reopened by the separating mechanism.

Flow passage closing mechanism of a beverage pouring apparatus

A flow passage closing mechanism of a beverage pouring apparatus for supplying the beverage to a dispenser by pushing the beverage in the keg due to the pressure of gas introduced therein. The mechanism includes a first connecting portion to be connected to the keg, a descending tube connected to the first connecting portion, a floating ball movably inserted into the descending tube, a valve seat formed at a lower end portion of the descending tube, a separating mechanism for lifting the floating ball from the valve seat, and a second connecting portion to be connected to the dispenser. When beverage in the keg is used up, the flow passage closing mechanism closes the flow passage of the beverage pouring apparatus by pushing the floating ball to the valve seat. The flowing path is reopened by the separating mechanism.

Flow passage closing mechanism of beverage pouring apparatus

Growing community of inventors

Fujisawa, Japan

Hiroshi Satoh