JP2006183399A - Cooling device of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device of a working machine capable of carrying out the cleaning of all of these heat exchangers in an object having three or more heat exchangers arranged along the flow direction of air in series. <P>SOLUTION: In a row of the heat exchangers constituted by respectively arranging an air condenser 27, a torque converter cooler 29, an oil cooler 24 and a radiator 25 in the flow direction A of air, the oil cooler 24 and the radiator 25 located on one end of the row are fixed to a frame body 26 fixed to the body frame 3, a frame 30 fixed to the torque converter cooler 29 is mounted on the frame body 26 through a hinge 30a, a frame 28 fixed to the air condenser 27 is mounted on the frame 30 through a hinge 28a to make the air condenser 27 possible to rotate in the direction separated from the torque converter cooler 29, and the torque converter cooler 29 can be rotated in the direction separating from the oil cooler 24 and the radiator 25. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is provided in a machine room of a work machine such as a loader or an excavator, and includes a fan for flowing air and three or more heat exchangers arranged in series along the air flow direction. The present invention relates to a cooling device.

  As a cooling device for a work machine, for example, there is a conventional technique disclosed in Patent Document 1. This prior art includes a plurality of heat exchangers and a fan for flowing air to cool the heat exchangers. The plurality of heat exchangers include an air conditioner condenser, an oil cooler, and a radiator.

  The radiator and the oil cooler are arranged in parallel in a direction orthogonal to the air flow direction, and are fixed in the machine room of the work machine. The air conditioner condenser and each of the radiator and the oil cooler are arranged in series along the air flow direction. The air conditioner capacitor is rotatably provided.

In the conventional technology configured as described above, when cleaning the radiator and the oil cooler, the air conditioner condenser is rotated in a direction away from the radiator and the oil cooler, so that each of the air conditioner condenser and the radiator and the oil cooler is provided with each of them. A space for performing cleaning can be formed.
JP 2002-371844 A

  In the cooling device of the work machine, in addition to the cooling device in which two heat exchangers are arranged in series along the air flow direction as in the prior art described above, three or more heat exchangers are provided for air flow. There are cooling devices arranged in series along the direction. When the above-described prior art is applied to this cooling device, only the outermost heat exchanger among the three or more heat exchangers arranged in series is rotatably provided, and the other heat exchangers Becomes fixed. For this reason, only the heat exchanger located on the outermost side among the heat exchangers arranged in series and the heat exchanger facing the heat exchanger can be cleaned.

  The present invention has been made in view of the foregoing, and the object of the present invention is to provide three or more heat exchangers arranged in series in the air flow direction. It is providing the cooling device of the working machine which can perform cleaning of this.

  [1] In order to achieve the above-mentioned object, the present invention provides a working machine including a fan for flowing air and three or more heat exchangers arranged in series along the flow direction of the air. In the cooling device, among three or more adjacent heat exchangers, at least one of the adjacent heat exchangers is provided so as to be rotatable with respect to the other.

  In this invention comprised in this way, when cleaning one heat exchanger among the adjacent heat exchangers of three or more heat exchangers arranged in series along the flow direction of air, By rotating at least one of the heat exchanger to be cleaned and the other heat exchanger adjacent to the heat exchanger, the heat exchanger to be cleaned and the other heat exchanger adjacent to the heat exchanger are rotated. A space for cleaning can be formed between the two. Thereby, all the cleaning of the 3 or more heat exchanger arrange | positioned in series along the flow direction of air can be performed.

[2] The present invention provides the invention according to [1],
Of the three or more adjacent heat exchangers, two or more adjacent heat exchangers form a set of heat exchanger bodies, and at least the heat exchanger body is rotated with respect to the other heat exchanger. A cooling device for a work machine, which is provided so as to be movable.

  [3] The present invention is the invention according to [1] or [2], wherein each of the heat exchangers is rotatably provided with respect to the other adjacent heat exchanger, and the adjacent heat exchangers are connected to each other. It is characterized by having an integration means that can be rotated integrally.

  [4] The present invention is the invention according to any one of [1] to [3], wherein the rotation center of the rotatable heat exchanger is set to the left and right sides constituting the machine room of the work machine. It is characterized in that it is set in the vicinity of one of the parts.

  [5] The present invention is characterized in that, in the invention according to any one of [1] to [4], the fan is provided so as to be rotatable with respect to the heat exchanger.

  As described above, according to the present invention, when one of the adjacent heat exchangers among three or more heat exchangers arranged in series along the air flow direction is cleaned. The heat exchanger to be cleaned and the other heat adjacent to the heat exchanger are rotated by rotating at least one of the heat exchanger to be cleaned and the other heat exchanger adjacent to the heat exchanger. A space for cleaning can be formed between the exchanger. Thereby, all the cleaning of the 3 or more heat exchanger arrange | positioned in series along the flow direction of air can be performed. Therefore, the cleaning property can be improved.

  An embodiment of a cooling device for a work machine according to the present invention will be described with reference to FIGS.

  FIG. 1 is a side view showing a wheel loader that is an example of a work machine provided with an embodiment of a cooling device according to the present invention, and FIG. 2 is a side view showing a state of a machine room of the wheel loader shown in FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2, FIG. 4 is a plan view showing a state in which the air conditioner condenser and the fan shown in FIG. 3 are rotated, and FIG. 5 is a view of the air conditioner condenser and the torque converter shown in FIG. It is a top view which shows the state rotated integrally.

  The cooling device 20 of this embodiment shown in FIGS. 2 and 3 is provided in the wheel loader 1 shown in FIG. 1, for example. The wheel loader 1 includes a vehicle body 2 and a work machine 4 coupled to the front portion of the vehicle body 2. The vehicle body 2 includes a vehicle body frame 3 that is a main body thereof, a cab 5 that is disposed substantially at the center of the vehicle body 2 and is fixed to the vehicle body frame 3, and a machine room that is disposed behind the cab 5 and is fixed to the vehicle body frame 3. 6 is provided.

  The cooling device 20 which is this embodiment is installed in the machine room 6 of the wheel loader 1 as shown in FIGS. In the machine room 6, 7 is an engine, and 8 is a partition wall that partitions a space 9 in which the engine 7 is installed and a space 10 in which the cooling device 20 is installed. Reference numeral 11 denotes a maintenance door which is attached to the left side wall of the machine room 6 via a hinge 11a so as to be rotatable leftward (in the direction of the arrow L) and which allows the left side of the machine room 6 to be opened and closed. It is a maintenance door that is attached to the right side wall of the machine room 6 via a hinge 12a so as to be rotatable in the right direction (arrow R direction) and that allows the right side of the machine room 6 to be opened and closed. An open / close cover 13 covers the opening 15 formed at the rear end of the machine room 6. The opening / closing cover 13 is attached to the upper plate 6a of the machine room 6 so as to be pivotable upward, whereby the rear end of the machine room 6 can be opened and closed.

  The cooling device 20 according to the present embodiment includes a fan 21 that flows air and a plurality of heat exchangers that are cooled by the air that the fan 21 flows, such as an intercooler 31, an oil cooler 24, a radiator 25, and a torque converter. 29, and an air conditioner capacitor 27.

  As shown in FIG. 3, the oil cooler 24 and the radiator 25 are arranged in parallel along a direction orthogonal to the air flow direction (arrow A direction), for example, the left-right direction of the wheel loader 1. As shown in FIG. 2, the intercooler 31 and the torque converter 29 are arranged along the direction orthogonal to the air flow direction (arrow A direction), for example, in the vertical direction of the wheel loader 1, on the front side of the oil cooler 24 and the radiator 25. Are arranged in parallel.

  As shown in FIGS. 2 and 3, an air conditioner capacitor 27 is disposed on the front side of the torque converter 29. That is, in the cooling device 20, each of the oil cooler 24 and the radiator 25, the air conditioner condenser 27, and the torque converter cooler 29 are arranged in series along the air flow direction (arrow A direction). Note that the temperature of the air heated by the heat exchanger other than the air conditioner condenser 27, that is, the oil cooler 24, the radiator 25, and the torque converter cooler 29 is too high to cool the air conditioner condenser 27. 29, the oil cooler 24 and the radiator 25 are arranged upstream of the air flow from any of the heat exchangers.

  The fan 21 is disposed behind the oil cooler 24 and the radiator 25. The fan 21 is driven by the motor 22 so that air flows in the direction of the arrow A.

  Moreover, in the cooling device 20, at least one of the adjacent heat exchangers is rotatably provided. For example, the oil cooler 24 and the radiator 25 are fixed, a torque converter cooler 29 adjacent to the oil cooler 24 and the radiator 25 is rotatably provided to the oil cooler 24 and the radiator 25, and an air conditioner condenser 27 adjacent to the torque converter cooler 29 is further provided. It is provided so as to be rotatable with respect to the cooler 29. Specifically, the oil cooler 24 and the radiator 25 are attached to the frame body 26 fixed to the vehicle body frame 3, and the torque converter cooler frame 30 to which the torque converter cooler 29 is attached via the hinge 30 a is attached to the frame body 26. An air conditioner capacitor frame 28 to which an air conditioner capacitor 27 is attached via a hinge 28a is attached to the frame 30.

  Further, the intercooler frame 32 attached to the intercooler 31 is also attached to the frame body 26 via a hinge (not shown).

  A fan frame 23 that supports the fan 21 and the motor 22 is also attached to the frame body 26 via a hinge 23a.

  Further, in the cooling device 20, the rotation center of the torque converter 29 and the air conditioner condenser 27, which are heat exchangers provided so as to be rotatable, that is, the rotation center of the hinges 28 a and 30 a, the machine room 6 of the wheel loader 1. It is set near one side of the both sides to be formed, for example, near the right side. The center of rotation of the intercooler 31 is also set near the right side of the machine room 6.

  In addition, the cooling device 20 is provided in a rotatable manner so that each of the cooling devices 20 is adjacent to each other, i.e., the air conditioner condenser 27 and the torque converter 29 are integrally turned as a set of heat exchanger bodies. It has. The integration means 40 includes a hook 40a fixed to the left end portion of the air conditioner condenser frame 28 and a latch 40b fixed to the left end portion of the torque converter cooler frame 30 and detachable from the hook 40a.

  The cooling device 20 includes a torque converter cooler fixing means 41 that can fix the torque converter 29 to the oil cooler 24 and the radiator 25. The torque converter cooler 41 includes a hook 41a that is fixed to the left side of the torque converter frame 30 and a latch 41b that is fixed to the left side of the frame body 26 and can be attached to and detached from the hook 41a.

  The cooling device 20 also includes a fan fixing means 42 that enables the fan 21 to be fixed to the oil cooler 24 and the radiator 25. The fan fixing means 42 includes a hook 42a that is fixed to the left side of the fan frame 23 and a latch 42b that is fixed to the left side of the frame body 26 and is detachable from the hook 42a.

  In addition, the cooling device 20 includes an intercooler fixing means 43 that can fix the intercooler 31 to the oil cooler 24 and the radiator 25. The intercooler fixing means 43 includes a hook (not shown) that is fixed to the left side of the intercooler frame 32 and a latch (not shown) that is fixed to the left end of the frame body 26 and can be engaged with and disengaged from the hook.

  Cleaning of the cooling device 20 configured in this way is performed as follows.

  When cleaning the surface of the air conditioner condenser 27 or the surface of the intercooler 31, the operator opens the maintenance door 11 on the left side of the machine room 6 and then forms between the partition wall 8 and the air conditioner condenser 27. The surface of the air conditioner capacitor 27 and the surface of the intercooler 31 are cleaned in the space.

  When cleaning the back surface of the air conditioner capacitor 27 or the surface of the torque converter 29, the operator releases the engagement between the hook 40a and the latch 40b of the integration means 40. That is, the state where the torque converter 29 and the air conditioner condenser are integrated is released. Then, the air conditioner condenser 27 is rotated in the direction away from the torque converter 29, that is, in the direction of arrow B in FIG. 4 to form a space for cleaning between the air conditioner condenser 27 and the torque converter 29, and the air conditioner The back surface of the capacitor 27 and the surface of the torque converter 29 are cleaned.

  When cleaning the back surface of the torque converter 29, the operator releases the engagement between the hook 41a and the latch 41b of the torque converter cooler 41. That is, the state where the torque converter 29 is fixed to the oil cooler 24 and the radiator 25 is released. And the space for cleaning between the torque converter 29 and each of the oil cooler 24 and the radiator 25 by rotating the torque converter 29 in the direction away from the oil cooler 24 and the radiator 25, that is, the direction of the arrow D. And the back surface of the torque converter 29 is cleaned.

  When cleaning the back surface of the intercooler 31, the operator releases the engagement between a hook and a latch (not shown) of the intercooler fixing means 43. That is, the state where the intercooler 31 is fixed to the oil cooler 24 and the radiator 25 is released. Then, the intercooler 31 is rotated in a direction away from the oil cooler 24 and the radiator 25 to form a space for cleaning between the intercooler 31 and the oil cooler 24 and the radiator 25. The back surface of the cooler 31 is cleaned.

  When cleaning the surface of the oil cooler 24 or the surface of the radiator 25, the operator releases the engagement between the hook 41 a and the latch 41 b of the torque converter cooler fixing means 41. Further, the engagement between the hook (not shown) and the latch of the intercooler fixing means 43 is released.

  Next, the torque converter 29 is rotated in the direction away from the oil cooler 24 and the radiator 25, that is, in the direction of the arrow D, and cleaning is performed between the torque converter 29 and each of the oil cooler 24 and the radiator 25. Create a space. Further, the intercooler 31 is rotated in a direction away from the oil cooler 24 and the radiator 25 to form a space for cleaning between the intercooler 31 and the oil cooler 24 and the radiator 25. Then, the surface of the oil cooler 24 and the surface of the radiator 25 are cleaned.

  When cleaning the surface of the oil cooler 24 without cleaning the back surface of the air conditioner condenser 27 or the surface of the torque converter 29, the engagement between the hook 40a and the latch 40b of the integration means 40 is not released. That is, the engagement of the hook 41a and the latch 41b of the torque converter cooler 41 is released while the torque converter 29 and the air conditioner condenser 27 are integrated. Then, the air conditioner condenser 27 and the torque converter 29 are rotated together as a set of heat exchanger bodies, and a space for cleaning is formed between the torque converter 29 and each of the oil cooler 24 and the radiator 25. Then, the surface of the oil cooler 24 is cleaned.

  Further, when cleaning the back surface of the oil cooler 24 or when cleaning the fan 21, after the opening / closing cover 13 is turned upward, the hook 42 a and the latch 42 b of the fan fixing means 42 are engaged. Is released. That is, the state where the fan 21 is fixed to the oil cooler 24 and the radiator 25 is released. Then, by rotating the fan 21 in a direction away from the oil cooler 24 and the radiator 25, that is, in the direction of arrow C in FIG. 4, a space for cleaning between the fan 21 and each of the oil cooler 24 and the radiator 25 is provided. Then, the rear surfaces of the oil cooler 24 and the radiator 25 and the fan 21 are cleaned.

  According to the cooling device 20 of the present embodiment, the following effects can be obtained.

  In the cooling device 20, in all the combinations of adjacent heat exchangers among three heat exchangers arranged in series along the air flow direction, that is, the combination of the air conditioner condenser 27 and the torque converter cooler 29, and the torque converter In the combination of each of the cooler 29 and the oil cooler 24 and the radiator 25, when cleaning one heat exchanger, at least one of the heat exchanger to be cleaned and the other heat exchanger adjacent to the heat exchanger By rotating, a space for cleaning can be formed between the heat exchanger to be cleaned and the other heat exchanger adjacent to the heat exchanger. Thereby, it is possible to clean all of the heat exchangers arranged in series along the air flow direction, that is, the air conditioner condenser 27, the torque converter cooler 29, the oil cooler 24, and the radiator 25. Can contribute to the improvement.

  Further, in the cooling device 20, since the fan 21 is rotatably provided, the back surface of the oil cooler 24 and the back surface of the radiator 25 can be cleaned, and this point can also contribute to improving the cleanability.

  Further, in the cooling device 20, all the rotation centers of the heat exchanger, that is, the air conditioner condenser 27, the torque converter 29, and the intercooler 31 that are rotatably provided are set near the right side of the machine room 6 of the wheel loader 1. did. Thereby, it is possible to perform the cleaning operation for all the heat exchangers from the left side of the machine room 6, and therefore it is possible to contribute to the improvement of the efficiency of the cleaning operation.

  Further, in the cooling device 20, both of the adjacent heat exchangers, for example, the air conditioner condenser 27 and the torque converter 29 are rotatably provided, and the integration means 40 capable of integrating the air conditioner condenser 27 and the torque converter 29 is provided. I have. Thereby, the air conditioner condenser 27 and the torque converter cooler 29 can be rotated together as a set of heat exchanger bodies, and this point can also contribute to an improvement in the efficiency of the cleaning work.

  The cooling device 20 is an example in which the number of heat exchangers arranged in series along the air flow direction is three, but the present invention is not limited to this and may be four or more.

  Moreover, the cooling device 20 is an example in which at least one heat exchanger in all combinations of adjacent heat exchangers among the three heat exchangers arranged in series along the air flow direction is rotatably provided. The oil cooler 24 and the radiator 25 are fixed, the torque cooler 29 adjacent to the oil cooler 24 and the radiator 25 is rotatably provided, and the air conditioner condenser 27 adjacent to the torque cooler 29 is rotatably provided. It is. However, the present invention is not limited to this. For example, the air conditioner condenser 27 may be fixed, the torque converter cooler 29 adjacent to the air conditioner condenser 27 may be rotatably provided, and the oil cooler 24 and the radiator 25 adjacent to the torque converter cooler 29 may be rotatably provided. Further, the air conditioner condenser 27 may be provided to be rotatable, the torque converter cooler 29 adjacent to the air conditioner condenser 27 may be fixed, and the oil cooler 24 and the radiator 25 adjacent to the torque converter cooler 29 may be provided to be rotatable. Moreover, you may provide all the heat exchangers so that rotation is possible.

  In the cooling device 20, the fan 21 is disposed behind the oil cooler 24 and the radiator 25. However, the present invention is not limited to this, and the fan 21 may be disposed in front of the air conditioner condenser 27. . In this case, the fan 21 may be driven by the engine 7.

It is a side view which shows the wheel loader which is an example of the working machine with which one Embodiment of the cooling device which concerns on this invention is provided. It is a side view which shows the state in the machine room of the wheel loader shown in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is a top view which shows the state which rotated the air-conditioner capacitor | condenser and fan shown in FIG. It is a top view which shows the state which integrated and rotated the air-conditioner capacitor | condenser and torque converter shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheel loader 2 Car body 3 Car body frame 6 Machine room 11 Maintenance door 12 Maintenance door 13 Opening / closing cover 15 Opening part 20 Cooling device 21 Fan 22 Motor 23 Fan frame 23a Hinge 24 Oil cooler 25 Radiator 26 Frame body 27 Air conditioner capacitor 28 Air conditioner condenser frame 28a Hinge 29 Torcon cooler 30 Torcon cooler frame 30a Hinge 31 Intercooler 32 Intercooler frame 40 Integration means 41 Torcon cooler fixing means 42 Fan fixing means 43 Intercooler fixing means 43

Claims (5)

In a cooling device for a work machine, comprising: a fan for causing air to flow; and three or more heat exchangers arranged in series along a flow direction of the air,
A cooling device for a working machine, wherein at least one of adjacent heat exchangers among three or more adjacent heat exchangers is rotatable with respect to the other. In the invention of claim 1,
Of the three or more adjacent heat exchangers, two or more adjacent heat exchangers form a set of heat exchanger bodies, and at least the heat exchanger body is rotated with respect to the other heat exchanger. A cooling device for a work machine, which is provided so as to be movable. In the invention according to claim 1 or 2,
Each of the heat exchangers is provided so as to be rotatable with respect to the other adjacent heat exchanger, and is provided with an integration means that enables the adjacent heat exchangers to rotate together. Machine cooling system. In the invention according to any one of claims 1 to 3,
The work machine cooling apparatus according to claim 1, wherein a rotation center of the heat exchanger provided so as to be rotatable is set in the vicinity of one of the left and right side portions constituting the machine room of the work machine. In the invention according to any one of claims 1 to 4,
A cooling device for a work machine, wherein the fan is rotatably provided with respect to the heat exchanger.

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