JP2006124959A - Motor mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor mounting structure which prevents a bad influence of oil on a leeward side by preventing the oil of a hydraulically-driven motor from being scattered to the leeward side. <P>SOLUTION: This motor mounting structure of construction machinery is equipped with a cooling fan 20, and the hydraulically-driven motor 21 for driving the cooling fan 20. An oil scattering prevention member 35 is provided in a storage chamber 52 for housing the motor 21 and a piping connection part 51 of the motor 21. The member 35 is provided on the leeward side of the cooling fan 20. The member 35 is equipped with a detachable cover 47. In the detached state of the cover 47, the storage chamber 52 is put into an opened state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a motor mounting structure, and more particularly to a motor mounting structure for a cooling fan for cooling an engine mounted on a construction machine such as a hydraulic excavator.

  The construction machine is equipped with a cooling fan for cooling an engine mounted on the construction machine. And this cooling fan rotates when a hydraulic drive motor drives. In addition, there is a cooling fan driving device that can obtain an optimum rotation speed of a fan necessary for cooling, and achieves improvement in fuel consumption and noise reduction by lowering the engine power consumption (for example, Patent Documents). 1).

That is, as shown in FIG. 10, the driving device for the cooling fan of this construction machine is provided with a driving pulley 82 on the engine 81, and the driving fan 82 is driven to rotate the cooling fan 83. The hydraulic motor 84 and the hydraulic pump 85 are provided. When the temperature of the radiator 86 is high, the hydraulic motor 84 is driven to increase the rotation speed of the cooling fan 83. When the temperature of the radiator 86 is low, the hydraulic motor 84 is driven. Is reduced to reduce the speed of the cooling fan 83 to zero.
Japanese Unexamined Patent Publication No. 7-11953

  However, in the cooling fan drive device, a hydraulic drive motor 84 is disposed on the windward side of the engine 81. For this reason, if an oil leak occurs in the hydraulic drive motor 84, the oil (oil) is scattered on the engine 81 side, which has an adverse effect on the engine 81.

  The present invention has been made in order to solve the above-mentioned conventional drawbacks, and its object is to prevent the oil of a hydraulic drive motor from scattering to the leeward side and to prevent the oil from adversely affecting the leeward side. It is to provide a mounting structure.

  Accordingly, the motor mounting structure of claim 1 is a motor mounting structure for a construction machine including a cooling fan 20 and a hydraulic drive motor 21 for driving the cooling fan 20, the hydraulic drive motor 21 and the hydraulic drive motor 21. An oil scattering prevention member 35 is provided on the leeward side of the cooling fan 20 in the storage chamber 52 that stores the pipe connection portion 51 of the drive motor 21.

  The motor mounting structure according to claim 2 is characterized in that the oil scattering prevention member 35 covers the storage chamber 52 in a substantially hermetically sealed manner.

  The motor mounting structure according to a third aspect is characterized in that the oil splatter prevention member 35 includes a detachable lid 47, and the storage chamber 52 is opened when the lid 47 is detached.

  The motor mounting structure according to claim 4 is characterized in that a drain pipe 53 is attached to the storage chamber 52.

  According to the motor mounting structure of the first aspect, since the oil of the hydraulic drive motor is not scattered on the leeward side of the cooling fan by the oil scatter preventing member, the oil is not scattered on the engine or the like disposed on the leeward side. For this reason, it is not necessary to pollute the engine or the like, and it is possible to prevent a failure of the engine or the like. In addition, since the oil can be prevented from scattering from the hydraulic drive motor and the pipe connection portion, the scattering can be effectively prevented.

  According to the motor mounting structure of the second aspect, since the oil splatter prevention member covers the storage chamber in a substantially hermetically sealed manner, oil splatter from the hydraulic drive motor and the pipe connection portion can be stably prevented. For this reason, scattering prevention can be performed more effectively.

  According to the motor mounting structure of the third aspect, the oil splatter prevention member includes the detachable lid, and when the lid is removed, the hydraulic drive motor and the pipe connection portion are opened. Maintenance inspection of the connecting part can be performed easily. For this reason, a hydraulic drive motor can be driven stably over a long period of time, and a long life as a product can be achieved. Further, in the assembling work, it is only necessary to attach the lid after assembling the hydraulic drive motor, so that the assembling can be improved. Moreover, in the state which attached the lid | cover, it can prevent that oil scatters to the leeward side by this lid | cover, and can exhibit an oil scattering prevention function effectively.

  According to the motor mounting structure of the fourth aspect, since the drain pipe is attached to the storage chamber, the oil accumulated in the storage chamber can be discharged to the outside through the drain pipe. For this reason, it is possible to prevent oil from adhering to other various devices.

  Next, specific embodiments of the motor mounting structure of the present invention will be described in detail with reference to the drawings. This motor mounting structure is used in a construction machine as shown in FIG. This construction machine is a hydraulic excavator, and includes a lower traveling body 1 and an upper revolving body 3 that is rotatably mounted on the upper portion of the lower traveling body 1 via a revolving mechanism 2. 4 is continuously provided. The work machine 4 has a base 5 swingably connected to the upper swing body 3, an arm 6 swingably connected to the tip of the boom 5, and swingable to the tip of the arm 6. And a bucket 7 connected to. The upper swing body 3 includes a cab 8 and an engine room 9. In this embodiment, the work machine side is called the front side, and the opposite side is called the rear side.

  As shown in FIGS. 6, 7, and 8, the engine room 9 is partitioned into a first chamber 11 and a second chamber 12 by a partition plate 10. In the first chamber 11, an oil cooler 13, A fuel cooler 14, a cooler-side fan 15, a hydraulic drive motor 16 for driving the cooler-side fan 15, a fan pump 17, and the like are housed, and an outer cooler 18, a radiator 19, A radiator-side fan 20, a hydraulic drive motor 21 for driving the radiator-side fan 20, an engine 22 and the like are housed. The hydraulic drive motor 16 in the first chamber 11 is disposed on the fan pump 17 side, and the hydraulic drive motor 21 in the second chamber 12 is disposed on the engine 22 side.

  The engine room 9 includes a room main body 23 and a hood 24 disposed on the upper portion of the room main body 23, and a suction port 26 is formed on the side wall 25 on the first chamber 11 side of the room main body 23. An exhaust port 28 is formed in the side wall 27 of the room body 23 on the second chamber 12 side. In addition, a vent 30 that opens to the hood 24 is provided in the upper wall 29 of the room body 23. The hood 24 has a discharge port 32 in the rear wall 31.

  Therefore, when the hydraulic drive motor 16 is driven and the cooler-side fan 15 rotates, air enters the first chamber 11 from the suction port 26 as indicated by arrow A, passes through the fuel cooler 14 and the oil cooler 13, It flows through the first chamber 11 and enters the hood 24 as indicated by an arrow B from the vent 30. Then, the air that has entered the hood 24 is discharged to the outside from the discharge port 32 as indicated by an arrow C. Further, when the hydraulic drive motor 21 is driven and the radiator-side fan 20 rotates, air enters the second chamber 12 from the exhaust port 28 as indicated by an arrow D, passes through the outer cooler 18 and the radiator 19, and The air flows into the two chambers 12 and enters the hood 24 from the vent 30 as indicated by an arrow E, and the air that has entered the hood 24 is discharged from the discharge port 32 to the outside as indicated by an arrow F.

  In this case, the engine 22 is disposed leeward in the second chamber 12 with respect to the fan 20 (and thus the hydraulic drive motor 21). Therefore, if the hydraulic drive motor 21 leaks oil, the leaked oil will scatter to the engine 22 side. If scattered, the engine 22 was adversely affected. Therefore, in this motor mounting structure, the oil scattering prevention member 35 that prevents the oil of the hydraulic drive motor 21 from scattering to the leeward side of the cooling fan 20 is provided.

  As shown in FIGS. 1 and 2, the oil scattering prevention member 35 is provided on a support frame 36 that supports the cooling fan 20. The support frame 36 includes a pair of vertical frames 37 and 38 that are erected on the plate 34, a pair of horizontal frames 39 and 40 that are attached to end surfaces 37 a and 38 a of the vertical frames 37 and 38, and the vertical frames 37 and 38. A plate 33 or the like disposed between them is provided. A pair of connecting vertical frames 41 and 42 (see FIG. 3) are attached to the horizontal frames 39 and 40. The connecting vertical frames 41 and 42 and the horizontal frames 39 and 40 are substantially rectangular frames. As shown in FIG. 3, a substrate 44 that supports the hydraulic drive motor 21 is attached to one opening portion of the frame body W, and a substantially rectangular flat plate shape is attached to the other opening portion of the frame body W. A lid mounting wall 45 is provided. The lid 47 is detachably attached to the lid attachment wall 45 via bolt members 46. The vertical frames 37 and 38 and the horizontal frames 39 and 40 are each made of a frame having a U-shaped cross section.

  Further, the hydraulic drive motor 21 supported by the substrate 44 has a fan boss 49 attached to a rotating shaft 48, and a plurality of blades 50 are projected from the fan boss 49. For this reason, the pipe connection portion 51 of the cooling fan 20 is housed in the frame W. In this case, a storage chamber 52 is formed by the frame body W, the substrate 44, and the lid 47, and in this storage chamber 52, a part of the hydraulic drive motor 21 and the pipe connection portion 51 (that is, this portion causes oil leakage). The oil scattering prevention member 35 is configured by sealing up a highly likely and oil-leakable portion). As shown in FIGS. 1 and 2, the plate 33 is provided with through holes 43, and the blades 50 of the cooling fan 20 are accommodated in the through holes 43.

  As shown in FIG. 4, a drain pipe 53 is attached to the storage chamber 52. That is, an opening hole that opens to the storage chamber 52 is provided in the upper wall 40a of the lower horizontal frame 40, and the base end portion 54 of the drain pipe 53 is inserted and fixed in this opening hole. Further, the main body 55 of the drain pipe 53 is guided by the concave groove 56 of the lower horizontal frame 40 and, as shown in FIG. 1 and FIG. It is led out through 34 through-holes.

  Incidentally, a plurality of hydraulic pipes 57 are connected to the hydraulic drive motor (fan drive motor) 21 as shown in FIGS. 1 and 2, etc. In this case, as shown in FIG. Through holes 58 are provided in the frames 41 and 42, and the through holes 58 are covered with a disk-shaped rubber seal member 59, and the hydraulic piping 57 is introduced into the storage chamber 52 through the rubber seal member 59. The rubber seal member 59 is attached to the inner surfaces of the connecting vertical frames 41 and 42, and can prevent oil leakage at the storage chamber introduction portion of the hydraulic pipe 57.

  Incidentally, the cooler-side fan 15 is also attached to a support frame (not shown) standing on the plate 34. Since this support frame has the same configuration as the support frame 36 that supports the radiator-side fan (cooling fan) 20, the description thereof is omitted. In this case, the lid 47 is not provided. The oil scattering prevention member 35 is not provided.

  In the motor mounting structure, in the hydraulic drive motor 21, even if oil leaks from the storage chamber 52, the oil splatter prevention member 35 does not scatter oil to the leeward side of the cooling fan 20, but is disposed on the leeward side. Do not splash oil on the engine 22 or the like. For this reason, it is not necessary to pollute the engine 22 and the like, and failure of the engine 22 and the like can be prevented. Further, as shown in FIG. 2, if the lid 47 is removed, the pipe connection portion 51 and the like are exposed to the outside, and maintenance and inspection of the hydraulic drive motor 21 and the pipe connection portion 51 can be easily performed. For this reason, the hydraulic drive motor 21 can be driven stably over a long period of time, and a long life as a product can be achieved. Further, in assembling work, it is only necessary to attach the lid 47 after assembling the hydraulic drive motor, so that the assembling can be improved. In addition, the scattering prevention function can be effectively exhibited.

  Even if oil leakage occurs in the storage chamber 52, the oil is discharged outside via the drain pipe 53 without collecting in the storage chamber 52. For this reason, it is possible to prevent oil from adhering to various other devices, and it is not necessary to perform the oil discharging operation from the storage chamber 52, and the cleaning operation of the storage chamber 52 is facilitated.

  Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, in the above embodiment, the oil scattering prevention member 35 is provided only for the hydraulic drive motor 21 in the second chamber 12, but may be provided for the hydraulic drive motor 16 in the first chamber 11. Also in this case, the oil of the hydraulic drive motor 16 is prevented from scattering to the leeward side. In addition, the mounting structure is not limited to a hydraulic excavator or the like, and is applicable to various things such as a crane or a crusher in which an engine or the like is arranged leeward of a cooling fan.

It is a principal part perspective view which shows embodiment of the motor attachment structure of this invention. It is a principal part perspective view of the state where the lid of the above-mentioned motor attachment structure was removed. It is principal part sectional drawing of the said motor attachment structure. It is a simplified perspective view of the storage chamber of the motor mounting structure. It is a principal part perspective view of the said storage chamber. It is a simplified sectional plan view of an engine room of a construction machine using the motor mounting structure. It is a simplified cross-section rear view of the engine room. It is a side view of the engine room. It is a simplified diagram of a construction machine using a motor mounting structure. It is a simplified view of a conventional motor mounting structure.

Explanation of symbols

  20 ... Cooling fan, 21 ... Hydraulic drive motor, 35 ... Oil scattering prevention member, 47 ... Lid, 51 ... Piping connection, 52 ... Storage chamber, 53 ... Drain piping

Claims (4)

  A construction machine motor mounting structure including a cooling fan (20) and a hydraulic drive motor (21) for driving the cooling fan (20), the hydraulic drive motor (21) and the hydraulic drive motor ( 21) A motor mounting structure for a construction machine, characterized in that an oil splatter prevention member (35) is provided on the leeward side of the cooling fan (20) in the storage chamber (52) for storing the pipe connection portion (51). .   The motor mounting structure for a construction machine according to claim 1, wherein the oil scattering prevention member (35) covers the storage chamber (52) in a substantially hermetically sealed manner.   The oil scattering prevention member (35) includes a detachable lid (47), and the storage chamber (52) is opened when the lid (47) is removed. A motor mounting structure for construction machine 2. The motor mounting structure for a construction machine according to any one of claims 1 to 3, wherein a drain pipe (53) is attached to the storage chamber (52).