JP2018119428A - Engine work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine work machine including an oil fence capable of improving a leakage prevention function for oil content scattered from an engine or the like, without requiring a complicated structural change.SOLUTION: An oil fence 16 is arranged with a separation part 17 provided between a side plate outer surface of the oil fence and a side plate inner surface of a frame 13 supporting a casing. On an inner surface of the frame, provided is a guide part 18a configured to flow downward liquid, flowing downward through the side plate inner surface of the frame, to the inside of the oil fence. Between an upper edge of the oil fence and a lower surface of the guide part, provided is an introduction internal 19 configured to jet out air, suctioned through the separation part, to the inside of the oil fence.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an engine work machine, and more particularly, to an engine work machine in which an oil barrier is provided at a lower portion of a casing that houses the engine and the work machine to block leakage of oil to the outside.

  In an engine working machine in which a working machine such as a generator or a compressor and an engine that drives the working machine are housed in a casing, an oil guard is provided inside the gantry that supports the casing, and the engine In addition, the oil leaked from the fuel tank is prevented from flowing out of the engine working machine. Moreover, providing the guide member for making the oil component adhering to the inner wall of a casing flow down into the inside of an oil barrier is also performed (for example, refer patent document 1).

JP 2012-47049 A

  On the other hand, the oil breakwater may be arranged with a separation portion between the oil breakwater and the mount so that the twist of the mount is not directly transmitted to the breakwater and is not damaged. In this case, when the oil component is scattered and dropped due to a hole in the hose or the like during operation of the engine work machine, the oil component may flow out of the engine work machine through the separation portion. For this reason, the above-mentioned guide member was developed further, and a measure that can reliably prevent oil leakage without causing an increase in assembly cost has been desired.

  Therefore, an object of the present invention is to provide an engine working machine including an oil breakage that can improve the leakage prevention function of oil scattered from an engine or the like without requiring a complicated structural change.

  In order to achieve the above object, an engine working machine of the present invention houses a working machine and an engine that drives the working machine in a casing, and sucks combustion and cooling air into the casing. In the engine working machine having an air inlet provided in a side wall portion of the casing and an oil breakwater having an upper portion opened in the casing at a lower portion of the casing, the oil breakwater is an outer surface of a side plate of the oil breakwater. And a side plate inner surface of the gantry supporting the casing are provided with a separation portion, and on the inner surface of the gantry, the liquid flowing down along the inner surface of the gantry is allowed to flow down into the oil barrier. The guide portion is provided, and an introduction gap is provided between the upper edge of the oil barrier and the lower surface of the guide portion to inject the air sucked through the separation portion into the oil barrier. The It is a symptom.

  According to the engine working machine of the present invention, the oil scattered from the engine or the like is caused to flow down to the inside of the oil barrier by the guide portion, and the flow of air ejected from the gap between the upper edge of the oil barrier and the lower surface of the guide portion Thus, the oil component adhering to the guide portion can be blown back to the inside of the oil breakwater, so that the oil component can be prevented from flowing out of the engine working machine through the separation portion between the oil breakwater and the gantry.

It is a front view of the engine working machine which shows one example of this invention. It is a principal part top view of an engine working machine similarly. It is a principal part front view of an engine work machine similarly. It is IV-IV sectional drawing of FIG. It is VV sectional drawing of FIG. It is a principal part section perspective view of an engine work machine similarly. It is a principal part expanded sectional view of an engine working machine similarly.

  1 to 7 show an embodiment of the engine working machine of the present invention. First, as shown in FIG. 1, the engine work machine 11 includes a work machine such as a generator, a compressor, a hydraulic unit, and the work on a mount 13 provided at a lower part of a casing 12 having a soundproof structure. It accommodates equipment (not shown) such as a diesel engine that drives the machine, and the casing 12 is formed in a substantially rectangular parallelepiped box shape, and the side wall 12a has a double opening method for performing maintenance work on the equipment. The inspection door 14 is provided. The side wall 12 a and the inspection door 14 are respectively provided with intake ports 15 for taking in cooling air and combustion air inside the casing 12.

  As shown in FIGS. 2 to 4, the gantry 13 includes a pair of base frames 13 a and 13 a provided in the longitudinal direction, and an apparatus support member 13 b that extends over the base frames 13 a and supports the apparatus, An oil breakwater support member 13c that spans the lower part of both base frames 13a and supports the oil breakwater 16 is formed.

  The oil breakwater 16 is a rectangular bottom plate 16a and a pair of long side plates 16b and 16b erected on opposite long sides of the bottom plate 16a as side plates surrounding the bottom plate 16a, and the bottom plate 16a. It has a pair of short side plates 16c, 16c erected on the short side part, and is formed in a box shape having an opening in the upper part.

  Further, the oil breakwater 16 is provided with a pipe member 16d that allows the inside and outside of the long side plate 16b to communicate with each other, and drainage pipes (such as hoses connected to the pipe member 16d) for collecting the oil accumulated in the oil breakwater 16 ( It can be discharged outside the engine working machine 11 through a not-shown) and collected in a suitable container.

  Further, since the oil breakwater 16 is placed on the upper surface of the oil breakwater support member 13c with the upper edge thereof under the equipment support member 13b, only the oil component directly scattered from the engine or the like can be obtained. In addition, oil that has been scattered indirectly through the device support member 13 b can also flow down into the oil barrier 16.

  Further, as shown in FIGS. 5 and 6, the oil breakwater 16 is disposed inside the pair of base frames 13a and 13a, and is separated from the outer surface of the long side plate 16b and the inner surface of the base frame 13a. 17 is provided, the twist generated in the gantry 13 is not directly transmitted to the oil barrier 16 and the oil dam 16 can be prevented from being twisted and broken together with the gantry 13.

  An inner frame 18 having a U-shaped cross section is provided on the inner surface of the base frame 13 a, and the lower side of the inner frame 18 has a tip protruding above the oil barrier 16 to form a guide portion 18 a. In addition, an introduction gap 19 is provided for causing the air sucked from the separation portion 17 to be ejected into the inside of the oil barrier 16 by slightly separating the lower surface of the guide portion 18a from the upper end of the long side plate 16b.

  In the engine work machine 11 formed in this way, when the operation switch is turned on and the engine is started, the air inside the casing 12 is discharged to the outside of the engine work machine 11 by the rotation of a radiator fan (not shown). At this time, since the inside of the casing 12 has a negative pressure, air is sucked into the casing 12 from the intake port 15. Furthermore, the sucked air becomes a flow toward the radiator fan and is disturbed inside the casing 12, and as shown by an arrow L1 in FIG. 7, the oil that has been scattered and flowed out is blown up and scattered.

  When the scattered oil adheres to the inner wall of the inner frame 18, it flows down along the inner wall of the inner frame 18 as indicated by an arrow L2, and descends from the inner wall of the inner frame 18 down the inclined surface of the guide portion 18a. 16, and flows down from the tip of the guide portion 18 a into the oil barrier 16. Thus, since the inside of the casing 12 has a negative pressure, it is possible to prevent oil that has flowed down along the inner wall of the gantry 13 from flowing out of the engine work machine 11 through the separation portion 17.

  Further, a part of the air sucked into the casing 12 ascends the separating portion 17 as shown by an arrow A 1, is ejected from the introduction gap 19 into the oil barrier 16, and is circulated by the introduction gap 19. Since the route is narrowed and the flow velocity is increased, the jet into the oil breakwater 16 is accelerated. For this reason, even if the oil component tries to flow along the lower surface of the guide portion 18 a toward the introduction gap 19, the oil component is blown back into the oil barrier 16 by the air ejected from the introduction gap 19. Thus, it is possible to reliably prevent the engine working machine 11 from flowing out.

  In this way, only a slight gap is provided between the upper edge of the oil breakwater 16 and the lower surface of the guide portion 18a, thereby preventing leakage of oil scattered from the engine or the like during operation of the engine work machine 11 to the outside. it can. Further, since it is not necessary to close the separating portion 17 with a sealing material or the like, an increase in manufacturing cost can be suppressed. Further, while the engine work machine 11 is stopped, no air flow is generated in the casing 12, so that the oil component is not blown up and flows out of the oil barrier 16 from the introduction gap 19.

  Note that the guide part only needs to be able to increase the speed of air blowing by forming a slight gap at the upper edge of the oil barrier, and is formed in an appropriate shape according to the size of the separation part and the arrangement state of the equipment. can do. For example, although it depends on conditions such as a negative pressure state in the casing, the introduction gap is appropriately about 2 to 5 mm.

  DESCRIPTION OF SYMBOLS 11 ... Engine working machine, 12 ... Casing, 12a ... Side wall, 13 ... Base, 13a ... Base frame, 13b ... Equipment support member, 13c ... Oil barrier support member, 14 ... Inspection door, 15 ... Inlet, 16 ... Prevention Oil bank, 16a ... bottom plate, 16b ... long side plate, 16c ... short side plate, 16d ... pipe member, 17 ... separation portion, 18 ... inner frame, 18a ... guide portion, 19 ... introduction gap

Claims (1)

  A working machine and an engine for driving the working machine are housed inside the casing, and an intake port for sucking combustion and cooling air into the casing is provided in the side wall of the casing, and the upper part is In the engine working machine provided with an oil breakwater opened inside the casing at a lower portion of the casing, the oil breakwater is spaced between an outer surface of the side plate of the oil breakwater and an inner surface of the side plate of the gantry supporting the casing. A guide portion is provided on the inner surface of the gantry to allow liquid flowing down along the inner surface of the side plate of the gantry to flow down into the oil levee, and the upper edge of the oil levee and the An engine working machine characterized in that an introduction gap is provided between the lower surface of the guide portion and the air sucked through the separation portion to be ejected into the oil barrier.

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