JP5837403B2 - Crane equipment - Google Patents

Description

  The present invention relates to a crane apparatus, and more particularly to a crane apparatus that can effectively use energy generated by the operation of the crane apparatus.

  A winch drum is attached to a crane device mounted on a work boat (see, for example, Patent Document 1). The winch drum feeds and winds up the wire used to operate the crane. For example, the crane's suspended load is moved up and down by feeding and winding the wire.

  By the way, although a crane may be freely dropped or moved downward using its own weight such as a crane hook attached to a wire, various attachments, and a suspended load, in this case, the winch drum is rotated by the fed wire. That is, since the winch drum is rotated by the action of gravity, power can be generated by rotating the generator using this rotation. However, at present, this kind of rotation of the mechanical winch drum is not used at all. Such a rotation of a mechanical winch drum is not used in a crane device installed on land as well as a crane device mounted on a work boat. If this rotation can be used, it will contribute to energy saving. .

Japanese Patent Laid-Open No. 9-12280

  The objective of this invention is providing the crane apparatus which can utilize effectively the energy which arises by the action | operation of a crane apparatus.

In order to achieve the above object, a crane apparatus according to the present invention includes a crane and a winch drum for feeding and winding a wire used to operate the crane, and a brake is used when a suspended load suspended by the crane is moved downward. In the crane device for rotating the winch drum without driving it to feed out the wire and moving the suspended load upward, the winch drum is driven to rotate to wind the wire. A generator driven to rotate by the rotation of the drum, a one-way clutch interposed between the generator and the winch drum, a control unit for controlling the power generated by the generator, and storing the power Only when the winch drum rotates by feeding out the wire. The generator I rotation of the winch drum Tsutawa said generator is characterized by being configured to be driven to rotate by Ji.

  According to the present invention, the generator driven to rotate by the rotation of the winch drum for feeding and winding the wire used for the operation of the crane, the one-way clutch interposed between the generator and the winch drum, The one-way clutch rotates the winch drum only when the winch drum rotates by feeding a wire, and has a control unit that controls the electric power generated by the generator and a battery that stores the electric power. Since it is configured to be driven to rotate by being transmitted to the generator, it is possible to generate electric power using the generator using the energy generated when the wire is drawn out by the action of gravity. The generated electric power can be used for the operation of the electric device using the control unit and the battery.

  On the other hand, when the winch drum rotates and winds the wire, the rotation of the winch drum is not transmitted to the generator. Therefore, even when the generator is provided, when the winch drum is driven to rotate to wind the wire, no extra load is generated, and wasteful consumption of energy can be prevented.

  In addition, since a one-way clutch is used, when the rotation of the winch drum is transmitted to the generator, a special judgment is made as to whether the winch drum is rotating by feeding the wire or by winding the wire. Since no equipment is required, it is advantageous to simplify the apparatus.

  This crane apparatus is mounted on a ship, for example. Generally, a crane device mounted on a ship has a longer wire feed amount and winding amount than a crane device installed on land, so that a larger amount of electric power can be obtained.

  A specification in which a plurality of winch drums are provided may be employed. According to this specification, it becomes easier to obtain power more stably.

  It is also possible to make the specification that the maximum payout length of the wire is 50 m or more. According to this specification, it becomes easier to obtain a larger amount of power.

It is explanatory drawing which illustrates the whole outline | summary of the crane apparatus of this invention. It is description which illustrates a one-way clutch. It is explanatory drawing which illustrates the crane apparatus of this invention which is moving the suspended load downward in a side view. It is explanatory drawing which illustrates the crane apparatus of this invention which is moving the suspended load upward in a side view.

  Hereinafter, a crane device of the present invention is explained based on an embodiment.

  A crane apparatus 1 of the present invention illustrated in FIGS. 1 to 4 is mounted on a ship 15 and is a mechanical type that feeds and winds a crane 2 and wires 4a, 4b, and 4c used to operate the crane 2, respectively. Winch drums 3a, 3b, 3c are provided. Furthermore, a generator 12 that is rotationally driven by the rotation of the winch drums 3a, 3b, and 3c, a one-way clutch 11 that is interposed in a transmission system between the generator 12 and the winch drums 3a, 3b, and 3c, and a generator 12 includes a control unit 13 that controls the power generated by the battery 12 and a battery 14 that stores the power. An electric device 16 is connected to the control unit 13 connected to the generator 12.

  In addition to the mechanical winch drums 3a, 3b and 3c, a hydraulic winch drum 3d is provided. The winch drum 3d feeds and winds up the wire 4d used for moving the crane 2 up and down. In FIG. 1, the hydraulic winch drum 3d is omitted and not shown.

  The structure of the crane apparatus 1 will be described in detail. An output shaft 6a of an engine 6 that rotationally drives the winch drums 3a, 3b, and 3c is connected to a drive shaft 8 via a torque converter 7. A one-way clutch 11 is provided on a pulley 8 a attached to the drive shaft 8. The pulley 8a and the pulley 12a of the generator 12 are connected via a transmission member such as a transmission belt. The drive shaft 8 is connected to a transmission unit 10 connected to the winch drums 3a, 3b, and 3c via a speed reducer 9.

  The rotation (driving force) of the output shaft 6a of the engine 6 is output to the driving shaft 8 by the torque converter 7 in a desired rotational speed and rotational direction, and each winch drum 3a is transmitted through the speed reducer 9 and the transmission unit 10. The winch drums 3a, 3b, 3c are rotated and transmitted to 3b, 3c. Each winch drum 3a, 3b, 3c is independently rotated by a clutch operation.

  One winch drum 3a is a main winding at the time of crane work. For example, by extending the wire 4a, the suspended load 5 suspended by the crane 2 is moved downward, and the suspended load 5 is moved upward by winding the wire 4a. Let Alternatively, the attachment such as a bucket suspended by the crane 2 is moved downward by feeding the wire 4a, and the attachment is moved upward by winding the wire 4a.

  Another winch drum 3b is a secondary winding at the time of crane work, and is used for lifting and suspending lightweight objects and auxiliary work. The winch drum 3b feeds the wire 4b, for example, moves the lightweight suspension 5 downward, and winds the wire 4b to move the lightweight suspension 5 upward. Further, another winch drum 3c is loosely wound and is used for auxiliary work during crane work by feeding and winding the wire 4c.

  As illustrated in FIG. 2, the one-way clutch 11 includes a gear 11a that is rotatably attached to the pulley 8a, and a pawl 11b that is detachably movable on a tooth portion of the gear 11a. When the drive shaft 8 is rotationally driven in one direction (right rotation direction in FIG. 2), the pawl 11b moves up and down around the support shaft at one end and smoothly moves on the outer peripheral surface of the tooth. Thereby, only the gear 11a rotates with the drive shaft 8, and the pulley 8a does not rotate. When the drive shaft 8 is rotationally driven in the other direction (left rotation direction in FIG. 2), the pawl 11b is locked to the tooth portion. As a result, the gear 11a and the pulley 8a rotate together with the drive shaft 8. That is, the one-way clutch 11 does not transmit the rotation (driving force) of the driving shaft 8 to the pulley 8a when the driving shaft 8 rotates in one direction, and only when the driving shaft 8 rotates in the other direction. Is transmitted to the pulley 8a.

  Using the characteristics of the one-way clutch 11, in the present invention, only when the winch drums 3a, 3b, 3c rotate by feeding out the respective wires 4a, 4b, 4c, the one-way clutch 11 winches the drums 3a, 3b. The rotation of 3c is transmitted to the generator 12 and is driven to rotate.

  The operation of the crane apparatus 1 will be described below.

  As illustrated in FIG. 3, when the suspended load 5 is moved downward using the main winding, the brake is released, the winch drum 3a is rotated, and the wire 4a is fed out. The rotation of the winch drum 3a at this time is caused by the weight of the crane hook or the suspended load 5, and does not use the driving force of the engine 6. The rotation of the winch drum 3 a is transmitted to the drive shaft 8 through the transmission unit 10 and the speed reducer 9. At this time, the drive shaft 8 rotates in the direction opposite to the direction illustrated in FIG. Therefore, the gear 11a and the pulley 8a rotate together with the drive shaft 8. Thereby, rotation of the winch drum 3a is transmitted to the generator 12 via the transmission member between the pulleys 8a and 12a, and the generator 12 is rotationally driven.

  The electric power generated by rotating the generator 12 is stored in the battery 14 through the control unit 13 and used as electric power for the electric device 16 as necessary. Alternatively, the generated power is not stored in the battery 14 but is supplied to the electric device 16 as it is through the control unit 13 and used.

  When the lightweight suspended load 5 is moved downward using the auxiliary winding, the brake is released, the clutch is connected, the winch drum 3b is rotated, and the wire 4b is fed out. The rotation of the winch drum 3b at this time is caused by the weight of the crane hook or the suspended load 5, and does not use the driving force of the engine 6.

  The rotation of the winch drum 3 b is transmitted to the drive shaft 8 through the transmission unit 10 and the speed reducer 9. Then, similarly to the case of the main winding described above, the gear 11a and the pulley 8a rotate together with the drive shaft 8 to drive the generator 12 to rotate.

  When crane work is performed using miscellaneous winding, as in the case of main winding and auxiliary winding, when the brake is released, the clutch is connected, the winch drum 3c is rotated and the wire 4c is fed out, the drive shaft 8 At the same time, the gear 11a and the pulley 8a rotate to drive the generator 12 to rotate.

  As illustrated in FIG. 4, when the suspended load 5 is moved upward using the main winding, the winch drum 3a is rotationally driven to wind the wire 4a. The rotation of the winch drum 3a at this time is due to the driving force of the engine 6. That is, the driving force of the engine 6 is transmitted from the output shaft 6a through the torque converter 7 to the winch drum 3a through the drive shaft 8, the speed reducer 9, and the transmission unit 10, thereby rotating the winch drum 3a.

  At this time, the drive shaft 8 rotates in the direction illustrated in FIG. Therefore, only the gear 11a rotates with the drive shaft 8, and the pulley 8a does not rotate. Therefore, the rotation of the winch drum 3a is not transmitted to the generator 12, and the generator 12 is not driven to rotate. In other words, the driving force of the engine 6 is not used to rotationally drive the generator 12. Therefore, although the generator 12 is provided, no extra load is generated when the winch drum 3a is rotationally driven to wind the wire 4a, so that wasteful consumption of energy can be prevented.

  Similarly, when the auxiliary winding or the coarse winding is used, when the winch drums 3b and 3c are rotationally driven to wind the wires 4b and 4c, the driving force of the engine 6 is used, but the winch drums 3b and 3c are rotated. The generator 12 is not driven to rotate without being transmitted to the generator 12.

  As described above, in the present invention, power is generated using the generator 12 by using energy generated when the wires 4a, 4b, and 4c are drawn out by the action of gravity. Since the generated electric power is used for the operation of the electric device 16 using the control unit 13 and the battery 14, the energy generated by the operation of the crane device 1 can be effectively used.

  Further, the one-way clutch 11 is only attached to the pulley 8a, and only when the winch drums 3a, 3b, 3c rotate by feeding the wires 4a, 4b, 4c, the winch drums 3a, 3b, 3c rotate. Tell the generator 12. This eliminates the need for special equipment for determining whether the winch drums 3a, 3b, and 3c are rotated by feeding out the wires 4a, 4b, and 4c or by winding the wires 4a, 4b, and 4c. Therefore, it is advantageous to simplify the crane device 1.

  The crane apparatus 1 of the present invention may be installed not only on the ship 15 but also on land. Since the crane device 1 mounted on the ship 15 as in this embodiment generally has a longer amount of feeding and winding of the wires 4a, 4b, and 4c than the crane device 1 installed on land, a larger amount of electric power is required. It will be advantageous to generate electricity. For example, the crane apparatus 1 of the present invention can be mounted on a grab-type dredger equipped with a mechanical winch or a fully swiveling pile driving ship.

  Although the number of winch drums 3a, 3b, and 3c is arbitrary, since the frequency of rotating the generator 12 increases by providing a plurality of winch drums 3a, it becomes easier to obtain power more stably. When a plurality of winch drums 3a, 3b, and 3c are provided, the rotation of the winch drums 3a, 3b, and 3c at the time of feeding all the wires 4a, 4b, and 4c can be used for power generation. Of the drums 3a, 3b, and 3c, at least one of the drums can be used for power generation.

  As the feeding length of the wires 4a, 4b, and 4c increases, the time (rotational speed) for rotationally driving the generator 12 increases, so that it becomes easier to obtain a larger amount of power. Therefore, for example, it is preferable that the maximum payout length of the wires 4a, 4b, and 4c of the at least one winch drums 3a, 3b, and 3c is 50 m or more. Of all the winch drums 3a, 3b, and 3c, it is desirable that at least one of the wires with the longest maximum payout length (the winch drum 3a as the main winding) is to be used for power generation.

  Although the kind of the electric equipment 16 is not specifically limited, For example, a security light, various lighting, a personal computer etc. can be illustrated.

DESCRIPTION OF SYMBOLS 1 Crane apparatus 2 Crane 3a, 3b, 3c Winch drum 4a, 4b, 4c Wire 5 Hanging load 6 Engine 6a Output shaft 7 Torque converter 8 Drive shaft 8a Pulley 9 Reduction gear 10 Transmission part 11 One-way clutch 11a Gear 11b Pawl 12 Generator 12a Pulley 13 Control unit 14 Battery 15 Ship 16 Electrical equipment

Claims (4)

A crane and a winch drum for feeding and winding the wire used for the operation of the crane are provided , and when the suspended load suspended by the crane is moved downward, the winch drum is not driven by releasing the brake. In the crane device that rotates the winch drum to wind the wire by rotating the winch drum when the suspended load is fed out and the suspended load is moved upward, a generator driven to rotate by the rotation of the winch drum, A one-way clutch interposed between the generator and the winch drum; a control unit that controls electric power generated by the generator; and a battery that stores the electric power, and the winch drum carries a wire. The rotation of the winch drum is transmitted to the generator by the one-way clutch only when rotating by Cranes and wherein said that the generator is configured to be rotated I.   The crane apparatus of Claim 1 mounted in a ship.   The crane apparatus according to claim 1 or 2, wherein a plurality of winch drums are provided.   The crane apparatus according to any one of claims 1 to 3, wherein a maximum payout length of the wire is 50 m or more.

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