JP5912975B2 - Magnetic device of work machine - Google Patents

Description

  The present invention relates to a magnet device having a magnet that is attached to a working machine such as a hydraulic excavator and attracts and releases scraps and the like.

  With reference to FIG. 5, the working machine equipped with the magnet device will be described. This working machine is based on a well-known hydraulic excavator. The hydraulic excavator main body 1 includes a front attachment 2 as a work arm, and a magnet 3 that attracts and releases scrap and the like at the tip of the front attachment 2. .

  The system configuration of the magnet device will be described with reference to FIG. The magnet device includes a magnet 3, a working machine engine 4, a magnet hydraulic pump 5 driven by the engine 4, a hydraulic motor 6, a valve block 7 for controlling the hydraulic pressure supplied to the hydraulic motor 6, and the hydraulic motor 6. The generator 8 driven by is provided. The valve block 7 includes an electromagnetic switching valve 11, a relief valve 12, a check valve 13, and a check valve 14.

  The magnet device also controls the electricity supplied from the generator 8 to excite the magnet 3, the monitor 10 for monitoring the control state of the control panel 9, and the magnet operation for operating the magnet 3. A switch 15 is provided. The work machine includes a machine controller 16 and an accelerator dial 17.

  The pressure oil discharged from the hydraulic pump 5 is supplied to the hydraulic motor 6 through the valve block 7 and the generator 8 is driven. AC electricity is generated by the generator 8 and supplied to the control panel 9. The control panel 9 converts alternating current electricity into direct current electricity, switches the magnet 3 to excitation, reverse excitation, and non-excitation by operation of the magnet operation switch 15 to attract and release scrap.

  A power generator and a control panel, which are units for driving the power generator, of this magnet device are separately mounted on a work machine (for example, see Patent Document 1).

JP 2012-62178 A (FIG. 2)

  The magnet device of the conventional working machine has the following problems to be solved.

  In other words, the magnet device is divided into a power generator and a control panel and is mounted on the fuselage, and the control panel has a cooling chamber with a cooling fan for cooling electrical equipment, and the volume of this part is large. The shape of the board is large. Therefore, particularly in order to mount the power generation device and the control panel on a work machine such as a hydraulic excavator, the modification of the airframe is a major one.

  The present invention has been made in view of the above-described facts, and its technical problem is to provide a magnet device for a work machine that can be easily mounted on a work machine by compactly combining a power generation device and a control panel of the magnet device. It is.

As the magnet device of the work machine to solve the above technical problems, according to the present invention, the magnet apparatus, a power generation device that integrates a valve block for controlling the hydraulic motor and a hydraulic motor to drive the generator, the generator, There is provided a magnet device for a working machine, comprising: a control panel that encloses at least a generator portion of the power generator in a tunnel shape with a gap from the surface of the power generator .

  Preferably, a cooling fin is provided in a portion surrounding the power generation device of the control panel, and the cooling fan provided in the generator is blown through a gap between the power generation device and the control panel.

  The control panel is formed in a gate shape on the base on which the power generation device is installed.

Magnet device for a working machine configured in accordance with the present invention, the generator, the hydraulic motor drives a generator, and a power generator with integrated valve block for controlling the hydraulic motor, at least the generator portion of the power generating device And a control panel that surrounds the power generator surface in a tunnel shape with a gap . Therefore, the power generation device and the control panel of the magnet device can be made compact and can be easily mounted on the work machine.

(A) of the magnet apparatus of the working machine comprised according to this invention is a side view, (b) is the front view seen in the arrow A direction of (a). Sectional drawing seen in the CC arrow direction of FIG. Sectional drawing seen in the BB arrow direction of FIG. The system block diagram of a magnet apparatus. The side view of the working machine provided with the magnet apparatus.

  Hereinafter, a magnet device for a working machine configured according to the present invention will be described in more detail with reference to the accompanying drawings illustrating preferred embodiments and FIGS. 1 to 3. Parts substantially the same as those in FIGS. 4 and 5 are denoted by the same reference numerals.

A magnet apparatus generally indicated by reference numeral 25 includes a generator 26 , a hydraulic motor 6 that drives the generator 26 , and a valve block 7 that controls the hydraulic motor 6 , and at least one of the power generators 24 . A control panel 27 that surrounds the generator 26 in a tunnel shape with a gap from the surface of the power generator 24 is provided.

  The generator 26 is provided with a cooling fan 26 a at one end, and the hydraulic motor 6 is attached to the other end by a coupling 21. The valve block 7 is attached to the hydraulic motor 6. In the integrated power generation device 24, a generator 26 is installed and attached on a base 23.

  The control panel 27 is formed on the base 23 in a gate shape having a pair of vertical portions and a ceiling portion connecting the upper portions thereof. An intake hole 28 (FIG. 2) having a louver is formed in one of the gate-shaped openings. The cooling fan 26 a of the generator 26 is positioned so as to face the intake port 28. The gate shape of the control panel 27 is formed to have a length that substantially surrounds the generator 26. The hydraulic motor 6 and the valve block 7 are arranged outside the other gate-shaped opening.

Primarily it will be described with reference to FIG. 3, a pair of vertical portions and each of the ceiling cooling fins 27a surrounding the generator 26 of the control panel 27, 27b, 27c are provided. The generator 26 includes a cooling fin 26 b at a portion facing the control panel 27. The air blown by the cooling fan 26a is passed through the portions of the cooling fins 27a, 27b, 27c and 26b, which are gaps between the generator 26 and the control panel 27.

  The effect of the magnet device of the working machine as described above will be described.

The magnet device 25 includes a generator 26 , a hydraulic motor 6 that drives the generator 26 , and a valve block 7 that controls the hydraulic motor 6 , and a generator 26 , and at least the generator 26 portion of the generator 24. A control panel 27 is provided that surrounds the surface of the power generation device 24 in a tunnel shape with a gap . Therefore, the integrated power generation device 24 and the control panel 27 surrounding the power generation device 24 can make the magnet device 25 compact and can be easily mounted on a work machine. Further, the control panel 27 in a form surrounding the power generation device 24 can increase the heat radiation area and effectively radiate heat.

  Cooling fins 27 a, 27 b, and 27 c are provided in a portion surrounding the power generation device 24 of the control panel 27, and the air blown by the cooling fan 26 a included in the generator 26 is passed through the gap between the power generation device 24 and the control panel 27. Therefore, since the generator 26 and the control panel 27 are cooled by the cooling fan 26a of the generator 26, the cooling fan and the cooling chamber of the control panel 27 become unnecessary, and the entire apparatus can be further compacted.

  Furthermore, since the control panel 27 is formed in a gate shape on the base 23 on which the power generation device 24 is installed, the control panel 27 can be easily manufactured in a compact manner, and the operation of the compact magnet device 25 can be performed. Since the base 23 may be mounted on the machine, the work machine can be reduced in remodeling.

3: Magnet 6: Hydraulic motor 7: Valve block 23: Base 24: Power generation device 25: Magnet device 26: Generator 26a: Cooling fan 26b: Cooling fin 27: Control panels 27a, 27b, 27c: Cooling fin

Claims (3)

A magnet device of a work machine that excites a magnet by the output of a generator to perform suction and release work of a load,
Magnet device
Generator, the power generator with integrated valve block for controlling the hydraulic motor and a hydraulic motor, which drives a generator,
A control panel that surrounds at least the generator part of the power generator in a tunnel shape with a gap from the surface of the power generator , and
A magnet device for a working machine characterized by the above. A cooling fin is provided in the part surrounding the power generator of the control panel,
The ventilation of the cooling fan provided in the generator is passed through the gap between the generator and the control panel.
The magnet device for a working machine according to claim 1, wherein: The control panel is formed in a gate shape on the base on which the power generator is installed.
The magnet device for a working machine according to claim 1 or 2, wherein

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