WO2013099519A1 - 建設機械 - Google Patents
建設機械 Download PDFInfo
- Publication number
- WO2013099519A1 WO2013099519A1 PCT/JP2012/081133 JP2012081133W WO2013099519A1 WO 2013099519 A1 WO2013099519 A1 WO 2013099519A1 JP 2012081133 W JP2012081133 W JP 2012081133W WO 2013099519 A1 WO2013099519 A1 WO 2013099519A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling air
- cooler
- radiator
- cooling
- oil
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/08—Air inlets for cooling; Shutters or blinds therefor
- B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
- E02F3/325—Backhoes of the miniature type
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
- B60Y2200/412—Excavators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Definitions
- the present invention relates to, for example, a construction machine such as a hydraulic shovel including a radiator for cooling engine cooling water, and a cooler such as an oil cooler for cooling hydraulic oil.
- a hydraulic shovel as a representative example of a construction machine has a self-propelled lower traveling body, an upper revolving body pivotally mounted on the lower traveling body, and elevating movement in front of the upper revolving body It is comprised by the provided working device.
- the hydraulic shovel there is a small hydraulic shovel for performing work in a narrow work site or the like in which an obstacle exists in the surroundings.
- This small hydraulic shovel is called, for example, a small turning shovel or a rear small turning shovel.
- These small hydraulic excavators form a counterweight in an arc shape and are disposed near the center of the turning so that the rear side substantially falls within the vehicle width of the lower traveling body when the upper turning body swings. To be configured.
- the upper revolving superstructure of the small hydraulic shovel takes in the cooling air by being rotationally driven by the revolving frame which forms the support structure, the engine mounted on the rear side of the revolving frame and driving the hydraulic pump, and driven by the engine.
- a cooling fan which is generated in a direction
- a radiator which is provided facing the cooling fan and which cools engine cooling water by passing a cooling air which is generated by the cooling fan
- an oil cooler which cools working oil by the cooling air It is composed of
- the radiator and the oil cooler are disposed in parallel with respect to the flow direction of the cooling air so that both can receive the cooled cooling air (see, for example, Patent Document 1).
- the hydraulic shovel of Patent Document 1 is compactly formed so as to fit within the vehicle width of the lower traveling body when the upper revolving body is pivoted, so the installation space on the revolving frame is narrowed.
- the space around the driver's seat where the operator operates, the engine, the hydraulic pump, the fuel tank, the hydraulic oil tank, etc. needs to be sized according to the specifications of the hydraulic shovel, and the space for installing these It can not be made smaller. Therefore, the radiator and the oil cooler are installed in a narrow space.
- the radiator is for cooling the engine cooling water, and requires a size (cooling performance) according to the displacement, output and the like of the engine. For this reason, when a large radiator is required, the oil cooler is reduced by the size of the large radiator. As a result, since the cooling performance by the oil cooler is lowered, the temperature of the hydraulic oil becomes high, and there is a problem that the hydraulic oil replacement cycle becomes short.
- the present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a cooling air volume necessary for cooling a small cooler even when one of the coolers arranged in parallel is small. To provide a construction machine capable of enhancing the cooling performance by supplying
- a construction machine includes a self-propelled vehicle body, an engine mounted on the vehicle body and driving a hydraulic pump, and a cooling fan generating a direction for sucking in cooling air by being rotationally driven using the engine as a drive source.
- a first cooler provided on the upstream side of the flow direction of the cooling air facing the cooling fan and cooling the fluid to be cooled by passing the cooling air, and the flow direction of the cooling air
- a second cooler arranged in parallel with the first cooler and cooling the other fluid by the cooling air.
- the feature of the configuration adopted by the present invention is that the suction side of the cooling air passing through the first cooler and the second cooler is supplied to the first cooler A cooling air adjustment member is provided to adjust the ratio of the amount of cooling air to be supplied and the amount of cooling air supplied to the second cooler.
- the cooling air adjusting member is a cooling air sucked from the outside by the cooling fan. Of these, the required amount of cooling air can be guided toward a small cooler.
- the required amount of cooling air can be guided toward the small-sized cooler of the two coolers arranged in parallel, the appropriate amount of cooling air can be circulated even with the small-sized cooler.
- the fluid to be cooled can be reliably cooled, and the cooling performance can be enhanced.
- the cooling air adjusting member is disposed extending upward and downward at a boundary position between the first cooler and the second cooler, and the cooling air adjusting member is guided in a direction requiring the cooling air. It is in the configuration to be arranged to be inclined.
- the cooling air adjustment member provided at the boundary position between the first cooler and the second cooler can be supplied to the second cooler only by inclining the cooling air adjustment member toward the first cooler. It is possible to increase the volume of cooling air being blown. Thereby, even when the area of the introduction opening of the second cooler is small, the fluid can be reliably cooled by increasing the volume of the cooling air.
- the cooling air adjusting member is formed as an air guiding plate consisting of a plate extending upward and downward to guide the cooling air flowing toward the respective coolers, and the air guiding plate
- Another object of the present invention is to change the angle with respect to the cooling air and / or the area facing the cooling air.
- the amount of cooling air directed to the first cooler is small. More cooling air can be directed to the second cooler.
- the baffle plate is slightly inclined toward the first cooler, a small amount of cooling air can be guided to the second cooler.
- the area of the baffle plate when the area of the baffle plate is changed, for example, when the area of the baffle plate to receive the cooling air is increased, a large number of cooling winds among the cooling winds directed to the first cooler are selected. It can be directed towards the cooler. When the area of the baffle plate is reduced, a small amount of cooling air can be introduced to the second cooler. Thereby, the ratio of the cooling air supplied to each cooler can be easily adjusted. Further, the cooling air adjusting member can be easily formed by the plate members extending upward and downward.
- the first cooler is a radiator for cooling engine cooling water for cooling the engine
- the second cooler is an oil cooler for cooling hydraulic oil supplied to various actuators.
- the cooling air adjusting member is disposed at a boundary position between the radiator and the oil cooler so as to secure an air volume necessary for cooling the radiator and the oil cooler, respectively.
- the required amount of cooling air can be secured by adjusting the ratio of the cooling air supplied to the radiator and the oil cooler by the cooling air adjusting member, and the engine cooling water and the working oil are effective. Can be cooled.
- the length dimension of the radiator in the direction orthogonal to the flow direction of the cooling air is formed larger than the length dimension in the direction orthogonal to the flow direction of the cooling air of the oil cooler, and the cooling air adjustment The member is arranged so as to be inclined toward the radiator side so as to secure the cooling air necessary for cooling toward the oil cooler having a small length dimension.
- the vehicle body is configured of a self-propelled lower traveling body, and an upper revolving body swingably provided on the lower traveling body and to which a working device is attached on the front side
- the upper revolving body is A swing frame forming a support structure, an arc-shaped counterweight provided on the rear side of the swing frame to balance the weight of the working device, and a left and a right located on the front side of the counterweight
- the engine mounted on the swing frame in a horizontally extending state extending in the direction, and an oil storage tank provided on the swing frame and located on the front side of the engine for storing hydraulic fluid and fuel respectively;
- the first cooler and the second cooler are disposed in the space formed by the counterweight, the engine, and the oil storage tank and arranged in parallel in the front and rear directions.
- the space formed by the counterweight, the engine, and the oil storage tank even when the counterweight is formed in an arc shape and the installation space of the cooler can not be secured widely, for example, as in a swing type construction machine
- the first and second coolers can be arranged in parallel in the front and back directions. In this case, although it is conceivable that one of the two coolers will be smaller due to the installation space, the necessary amount of cooling air should be secured even for a small cooler by means of the cooling air adjusting member. Can.
- FIG. 10 is an enlarged cross-sectional view of the connection bracket and the baffle plate as viewed in the direction of arrows XX in FIG.
- FIG. 1 to 11 show a first embodiment of the present invention.
- a canopy-specific hydraulic shovel provided with a canopy covering the upper side of the driver's seat is illustrated.
- a radiator and an oil cooler are provided as a cooler in the heat exchange device.
- reference numeral 1 denotes a crawler hydraulic excavator as a construction machine according to the first embodiment.
- the hydraulic shovel 1 comprises a self-propelled lower traveling body 2, an upper revolving body 3 rotatably mounted on the lower traveling body 2, and a lifting motion toward the front of the upper revolving body 3 and a rear side thereof. It is comprised by the working apparatus 4 provided possible and excavating earth and sand etc.
- the lower traveling body 2 and the upper swing body 3 constitute a vehicle body of the hydraulic shovel 1.
- the upper swing body 3 has left and right width dimensions substantially equal to the vehicle width of the lower traveling body 2, and the vehicle width of the lower traveling body 2 when turning operation is performed It is formed in a substantially circular shape as viewed from above so as not to greatly protrude from the. That is, when the upper swing body 3 turns on the lower traveling body 2 with O as the turning center and the turning radius as R, the turning radius R of the counterweight 9 to be described later is substantially equal to that of the lower traveling body 2. It is configured as a rear swing type hydraulic shovel that fits within the vehicle width.
- the upper swing body 3 includes a swing frame 5, a floor member 6, a driver's seat 7, a canopy 8, a counterweight 9, an engine 10, a hydraulic oil tank 13, a fuel tank 14, a heat exchange device 17 and the like.
- the swing frame 5 constitutes a support structure of the upper swing body 3. As shown in FIG. 3, the swing frame 5 is formed by separating a left and right middle portion into a flat plate-like bottom plate 5A extending in the front and back directions, and an upper surface side of the bottom plate 5A. A left vertical plate 5B and a right vertical plate 5C erected in a V shape, and a support bracket 5D provided at the front end of each of the vertical plates 5B and 5C for supporting the work device 4; And extend from the bottom plate 5A and the vertical plates 5B and 5C to the left and right and are connected to the side frames 5E and 5F. It is comprised by the overhang beam 5G and the building attachment frame 5H provided in the left front side of the said left vertical plate 5B.
- a mounting base 5J is provided on the rear side of the swing frame 5 so as to project rightward from the upper portion of the right vertical plate 5C.
- a mounting frame 18 of a heat exchange device 17 to be described later is attached to the mounting table 5J.
- the mounting frame 5J has, for example, three screw holes 5J1 at intervals in the front and rear directions. doing.
- the floor member 6 is provided on a building attachment frame 5H on the left front side of the turning frame 5 (see FIGS. 2 and 3).
- the floor member 6 is for the operator who operates the hydraulic shovel 1 to board, and the driver's seat 7 on which the operator is seated is provided.
- a canopy 8 is provided on the floor member 6 so as to cover the upper side of the driver's seat 7, and the canopy 8 is configured as a four-post canopy comprising four legs 8A and a roof 8B. .
- the counterweight 9 is attached to the rear side of the swing frame 5.
- the counterweight 9 balances the weight with the working device 4 and is formed as a substantially arc-shaped weight having a turning radius R from the turning center O.
- the counterweight 9 used in the small swing type hydraulic shovel 1 is formed in an arc shape in which the center part in the left and right directions protrudes to the rear side.
- the right end 9A is curved in an arc shape and described later It extends forward to reach the heat exchange device 17.
- the engine 10 is mounted on the front side of the counterweight 9 and mounted on the turning frame 5 in a laterally-oriented state extending in the left and right directions.
- a hydraulic pump 11 (shown by a dotted line in FIG. 2) is mounted on the left side of the engine 10 in the left and right directions to pressurize (pressurize) hydraulic fluid supplied from a hydraulic fluid tank 13 described later and discharge it. There is.
- the hydraulic oil returned by driving various actuators provided in the work device 4 and the like is returned to the hydraulic oil tank 13 after being cooled by the oil cooler 21 described later.
- Reference numeral 12 denotes a suction type cooling fan provided on a rotating shaft 10A of the engine 10, and the cooling fan 12 is provided on the opposite side (left, right side in the right direction) of the hydraulic pump 11 with the engine 10 interposed therebetween. .
- the cooling fan 12 is rotationally driven by the engine 10 to suck outside air as cooling air through a suction port 15A1 of a side cover 15A constituting an exterior cover 15 described later, and supply it to the heat exchange device 17.
- the hydraulic oil tank 13 is provided on the swing frame 5 at the front side of the engine 10 and on the canopy 8 side, and the hydraulic oil tank 13 constitutes an oil storage tank for storing hydraulic oil to be supplied to the hydraulic pump 11 ing.
- the fuel tank 14 is provided on the swing frame 5 adjacent to the right side of the hydraulic oil tank 13, and the fuel tank 14 constitutes an oil storage tank for storing the fuel to be supplied to the engine 10.
- the hydraulic oil tank 13 and the fuel tank 14 may be disposed on the opposite side in the left and right directions. Furthermore, the hydraulic oil tank 13 and the fuel tank 14 may be arranged side by side in the front and rear directions.
- the exterior cover 15 is provided on the turning frame 5 so as to extend laterally from the rear side of the canopy 8.
- the exterior cover 15 covers the engine 10 mounted on the swing frame 5, the hydraulic pump 11, the heat exchange device 17 and the like.
- An arc-shaped side cover 15A is provided on the right side of the exterior cover 15 so as to face the engine 10 (cooling fan 12) and cover the space between the counterweight 9 and the fuel tank 14.
- the side cover 15A is provided with a suction port 15A1 (see FIGS. 1 and 4) for sucking external air as a cooling air when the cooling fan 12 is rotationally driven.
- the right rear side position of the upper swing body 3 is surrounded by the side weights 15, the engine 10, the hydraulic oil tank 13, the fuel tank 14 and the side cover 15 A of the exterior cover 15.
- the space 16 is formed.
- the space 16 is provided by utilizing the space on the right rear side of the rear swing type hydraulic excavator 1.
- the space 16 is formed as a triangular installation space by the right end 9A of the counterweight 9 and the side cover 15A being inclined.
- a heat exchange device 17 described later is disposed in the space 16.
- reference numeral 17 denotes a heat exchange device provided in the space 16 on the rear side of the revolving frame 5 so as to face the front side of the cooling fan 12 of the engine 10.
- the heat exchange device 17 cools the temperature-increased engine cooling water and the hydraulic oil by the cooling air.
- the heat exchange apparatus 17 is comprised by the below-mentioned support frame 18, the radiator 20, the oil cooler 21, the connection bracket 22, the baffle plate 26 grade
- a support frame 18 forms an outer frame of the heat exchange device 17.
- the support frame 18 is mounted on the engine 10 mounted in a transverse direction extending in the left and right directions in the direction orthogonal to the flow direction of the cooling air by the cooling fan 12, that is, in the first embodiment.
- the front and rear of the upper swing body 3 are arranged in the longitudinal direction.
- the support frame 18 is formed as a frame structure that surrounds and supports the radiator 20 and the oil cooler 21.
- the support frame 18 is bent toward the upstream side in the flow direction of the cooling air, with the substantially square frame plate portion 18A facing the cooling fan 12 and the lower portion of the frame plate portion 18A.
- the mounting plate portion 18B thus formed, the first side plate portion 18C and the second side plate portion 18D which are provided to face both ends of the frame plate portion 18A in the direction orthogonal to the flow direction of the cooling air, It is comprised by the upper-plate part 18E attached to the upper part of side-plate part 18C, 18D.
- the upper plate portion 18E supports the upper portion of the radiator 20, and a support plate portion 18F for supporting the lower portion of the radiator 20 is provided below the frame plate portion 18A.
- the upper surface plate 18A1 of the frame plate portion 18A constitutes a cover mounting plate to which the exterior cover 15 is attached.
- screw holes 18G for attaching an oil cooler 21 to be described later are disposed at intervals in the upper and lower directions on the hydraulic fluid tank 13 side of the frame plate portion 18A. Furthermore, in the mounting plate portion 18B, three bolt insertion holes 18H are provided so as to correspond to the three screw holes 5J1 provided in the mount 5J of the revolving frame 5.
- the support frame 18 is mounted on the mount 5 J of the turning frame 5 in a state where a radiator 20, an oil cooler 21 and the like to be described later are assembled. In this state, the support frame 18 is attached to the turning frame 5 by screwing the bolt 19 inserted into the bolt insertion hole 18H into the screw hole 5J1 of the mounting base 5J.
- Reference numeral 20 denotes a radiator as a first cooler provided in the support frame 18.
- the radiator 20 is disposed in the support frame 18 so as to be positioned on the rear side facing the counterweight 9.
- the radiator 20 is disposed in a direction orthogonal to the flow direction of the cooling air by the cooling fan 12 of the engine 10, that is, with the front and back of the revolving frame 5 as the length direction.
- the radiator 20 is formed to have a length dimension L1 in the front and rear directions, and the length dimension L1 is larger than the length dimension L2 of the oil cooler 21. (L1> L2).
- the radiator 20 cools the engine 10 and cools the temperature-increased engine cooling water.
- the radiator 20 includes an upper tank 20A, a lower tank 20B, and a radiator 20C, and the tanks 20A and 20B are connected to a water jacket (not shown) of the engine 10.
- Screw holes 20D are respectively provided on the end faces of the upper tank 20A and the lower tank 20B on the oil cooler 21 side. These screw holes 20D are screwed with bolts 19 for attaching a connection bracket 22 described later.
- the upper tank 20A is supported by the upper plate portion 18E of the support frame 18 via the vibration isolation member 20E, and the lower tank 20B is via the vibration isolation member 20E. Is supported by the support plate portion 18F.
- Reference numeral 21 denotes an oil cooler as a second cooler provided on the side of the hydraulic oil tank 13 in the support frame 18.
- the oil cooler 21 is arranged side by side with the radiator 20 so as to be parallel to the flow direction of the cooling air.
- the oil cooler 21 is arranged to be substantially flush with the radiator 20.
- the oil cooler 21 includes an upper tank 21A, a lower tank 21B, and a heat radiating portion 21C, almost the same as the radiator 20.
- the oil cooler 21 is disposed in a direction orthogonal to the flow direction of the cooling air by the cooling fan 12, that is, the longitudinal direction of the turning frame 5. In this case, as shown in FIG.
- the oil cooler 21 is formed to have a length dimension L2 in the front and rear directions, and the length dimension L2 is smaller than the length dimension L1 of the radiator 20 (L1> L2).
- the oil cooler 21 is formed as a cooler smaller than the radiator 20.
- two mounting brackets 21D are provided on the end edge of the support frame 18 on the first side plate portion 18C side (front side) at an interval in the upper and lower directions, and the end edge of the radiator 20 side (rear side) , Two mounting brackets 21E are provided at an interval in the upper and lower directions.
- the oil cooler 21 can be attached to the frame plate portion 18A of the support frame 18 by screwing the bolt 19 inserted into the mounting bracket 21D into the screw hole 18G of the support frame 18.
- the oil cooler 21 screws the bolt 19 inserted through the mounting bracket 21E on the radiator 20 side into the screw hole 23D of the bracket main body 23 constituting the connection bracket 22 described later, so that the connection bracket 22 is interposed. It can be attached to the radiator 20.
- high temperature hydraulic oil returned from various actuators flows into the upper tank 21 A of the oil cooler 21, and the lower tank 21 B flows the cooled hydraulic oil toward the hydraulic oil tank 13.
- the reference numeral 22 denotes a connection bracket provided between the radiator 20 and the oil cooler 21.
- the connection bracket 22 connects the radiator 20 and the oil cooler 21 in parallel.
- the connection bracket 22 is integrally provided with an air guide plate 26 described later, which is located on the upstream side (inflow side) when the cooling air flows through the radiator 20 and the oil cooler 21.
- connection bracket 22 includes a long plate portion 23A extending upward and downward, and a pair of bent portions 23B and 23C obtained by bending the long side of the long plate portion 23A.
- a bracket main body 23 formed in an L-shaped cross section, an upper mounting portion 24 formed by bending the upper side of the bracket main body 23 in a crank shape, and a lower side of the bracket main body 23 bent in a crank shape
- the lower attachment portion 25 is configured.
- Each of the mounting portions 24 and 25 is provided with bolt insertion holes 24A and 25A.
- two screw holes 23D are provided at intervals in the upper and lower directions.
- connection bracket 22 is screwed with the bolt 19 inserted through the bolt insertion hole 24A of the upper attachment portion 24 in the screw hole 20D of the upper tank 20A in a state where the bracket main body 23 is placed along the end surface of the radiator 20 on the oil cooler 21 side. Then, the bolt 19 inserted into the bolt insertion hole 25A of the lower mounting portion 25 is screwed into the screw hole 20D of the lower tank 20B. Thus, the connection bracket 22 can be attached to the radiator 20.
- connection bracket 22 when the connection bracket 22 is attached to the radiator 20, each mounting bracket 21E of the oil cooler 21 is brought into contact with the bent portion 23B of the bracket main body 23, and the bolt 19 inserted through the bracket main body 23 is screwed into the screw hole 23D. Wear it.
- the connection bracket 22 can connect the radiator 20 and the oil cooler 21 in parallel to the flow direction of the cooling air, that is, in series in the front and rear directions of the revolving frame 5.
- Reference numeral 26 denotes a baffle plate as a cooling air adjustment member provided on the connection bracket 22.
- the air guide plate 26 is provided on the upstream side of the flow direction of the cooling air with respect to the radiator 20 and the oil cooler 21, that is, on the suction side of the radiator 20 and the oil cooler 21.
- the air guide plate 26 adjusts the ratio of the amount of cooling air supplied to the radiator 20 and the amount of cooling air supplied to the oil cooler 21.
- the air guide plate 26 secures a large amount of cooling air toward the small oil cooler 21 whose length dimension L2 is smaller than the length dimension L1 of the radiator 20. For this reason, the air guide plate 26 is disposed to be inclined to the radiator 20 side, and adjusts the supply ratio of the cooling air.
- the baffle plate 26 is formed of a rectangular plate extending upward and downward, and is integrally formed with the bent portion 23B of the connection bracket 22. That is, the air guide plate 26 extends in the state of being bent upstream from the end edge of the bent portion 23B which constitutes the bracket main body 23 of the connection bracket 22.
- the air guide plate 26 and the connection bracket 22 may be formed as separate members and connected by welding means or screwing means.
- the baffle plate 26 has an inclination angle of an angle ⁇ on the radiator 20 side, and is formed with a width dimension of a dimension W1 from the connection bracket 22.
- the air guide plate 26 is formed integrally with the connection bracket 22, the assembly man-hour is added only by performing the normal operation of connecting the radiator 20 and the oil cooler 21 by the connection bracket 22. It can be easily provided.
- the width dimension W1 of the air guide plate 26 is set to about 20% of the length dimension L1 of the radiator 20.
- the air guide plate 26 is disposed to be inclined toward the radiator 20 so as to cover a part of the radiator 20 on the oil cooler 21 side, and the plate body of the width dimension W1 to the heat dissipation portion 20C of the radiator 20 It comprises by making it incline by angle alpha.
- the air guiding plate 26 faces the direction of the part of the cooling air directed to the radiator 20 as the oil cooler 21. It can be changed to the side. Therefore, the air guide plate 26 can guide more cooling air to the oil cooler 21 than the amount of cooling air that the oil cooler 21 can receive alone.
- the partition plate 27 is provided on the front side of the heat exchange device 17.
- the partition plate 27 is provided to extend between the heat exchange device 17 on the side of the engine 10, the hydraulic oil tank 13, and the fuel tank 14 and extends in the left and right directions on the front side of the heat exchange device 17. .
- the hydraulic shovel 1 according to the first embodiment has the above-described configuration. Next, the operation of the hydraulic shovel 1 will be described.
- the operator gets on the floor member 6 and sits on the driver's seat 7.
- the driving lever By operating the driving lever in this state, the lower traveling body 2 can be driven to move the hydraulic shovel 1 forward or backward.
- the operator sitting on the driver's seat can operate the working device 4 and the like to perform the excavation work of the earth and sand, etc. by operating the operation lever.
- the cooling fan 12 is rotationally driven by the engine 10.
- the engine cooling water and the hydraulic oil are cooled by sucking the external air from the suction port 15A1 of the side cover 15A of the exterior cover 15 and supplying it toward the radiator 20 and the oil cooler 21 of the heat exchange device 17.
- the cooling air sucked from the outside into the space 16 and directed to the heat exchange device 17 is supplied straight toward the radiator 20 and the oil cooler 21.
- part of the cooling air directed toward the vicinity of the boundary between the radiator 20 and the oil cooler 21 is guided by the baffle plate 26 and guided to the oil cooler 21 side.
- the air guide plate 26 inclines the plate having the width dimension W1 from the position parallel to the flow direction of the cooling air toward the radiator 20 at an angle ⁇ , the vicinity of the boundary between the radiator 20 and the oil cooler 21
- the cooling air supplied toward the air flow guide is guided along the inclination of the air guide plate 26 toward the oil cooler 21 by contacting the air guide plate 26.
- the wind guide plate 26 sets the inclination angle ⁇ to, for example, about 60 ° and the width dimension W1 to, for example, about 20% of the length dimension L1 of the radiator 20, the temperature of the hydraulic oil is appropriate. It is possible to supply the oil cooler 21 with cooling air having a flow rate necessary to reduce the temperature to a certain temperature. As a result, even with a small oil cooler 21 having a small opening area for introducing cooling air, more cooling air can be supplied to the oil cooler 21 than the air volume assumed from the opening area.
- the hydraulic oil can be cooled efficiently by 21.
- the wind guide plate 26 can be provided by the cooling fan 12. Among the cooling air drawn into the space 16 from the outside, part of the cooling air directed to the radiator 20 can be guided to the oil cooler 21.
- the air guide plate 26 Since the air guide plate 26 is disposed at the boundary position between the radiator 20 and the oil cooler 21, the cooling air supplied toward the radiator 20 near this boundary can be guided sequentially toward the oil cooler 21. . As a result, after the return oil from various actuators is sufficiently cooled, the hydraulic pump 11 can be supplied again to each of the actuators. Moreover, since the air guide plate 26 can appropriately adjust the volume of the cooling air that can be directed toward the oil cooler 21 by changing the inclination angle ⁇ and the width dimension W1 (area), the operation of the air guide plate 26 The oil can be cooled to an appropriate temperature.
- the air guide plate 26 is integrally provided using the existing connection bracket 22 connecting the radiator 20 and the oil cooler 21 in parallel, it can be attached together with the connection bracket 22, and the number of operation man-hours can be increased. It can be easily provided without increasing the connection bracket 22
- FIGS. 12 to 14 show a second embodiment of the present invention.
- a feature of the second embodiment is that the condensers constituting the air conditioner are arranged to overlap the radiator and the upstream side of the oil cooler.
- the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof will be omitted.
- reference numeral 31 denotes a cab-specification hydraulic shovel as a construction machine according to the second embodiment.
- a cab 33 forming a cab is mounted on the upper revolving superstructure 32 of the hydraulic shovel 31.
- the cab 33 there are provided a driver's seat on which an operator is seated, various operation levers, and an indoor unit (not shown) of an air conditioner for adjusting the indoor environment.
- Reference numeral 34 denotes a heat exchange device according to a second embodiment mounted on the upper swing body 32 in place of the heat exchange device 17 according to the first embodiment.
- the heat exchange device 34 is provided with a condenser 35 located upstream of the radiator 20 and the oil cooler 21 in the flow direction of the cooling air.
- the condenser 35 is provided to overlap the radiator 20, the oil cooler 21 and the flow direction of the cooling air in series.
- the condenser 35 constitutes a part of the outdoor unit of the air conditioner.
- the baffle plate 26 is disposed at the boundary position between the radiator 20 and the condenser 35, and can guide the cooling air having passed through the condenser 35 to the oil cooler 21 side.
- FIG. 15 shows a third embodiment of the present invention.
- the feature of the third embodiment is that the radiator is disposed on the hydraulic oil tank side and the oil cooler is disposed on the counterweight side.
- the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof will be omitted.
- reference numeral 41 denotes the heat exchange device according to the third embodiment.
- the heat exchange device 41 has a support frame 42, a radiator 43 as a first cooler, an oil cooler 44 as a second cooler, and a connection similar to the heat exchange device 17 according to the first embodiment.
- a bracket 45, a wind guide plate 46 as a cooling air adjustment member, and the like are provided.
- the radiator 43 as the first cooler is disposed on the hydraulic oil tank 13 side (front side), and the oil cooler 44 as the second cooler is a counterweight. It differs from the heat exchange device 17 according to the first embodiment in that it is arranged on the 9 side (rear side).
- an appropriate amount of cooling air can be guided to the oil cooler 44 side by the air guide plate 46.
- FIG. 16 shows a fourth embodiment of the present invention.
- the feature of the fourth embodiment is that the angle of the air guide plate to the cooling air is changed.
- the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof will be omitted.
- reference numeral 51 denotes a wind guide plate as a cooling air adjustment member according to the fourth embodiment provided on the connection bracket 22 '. Similar to the air guide plate 26 according to the first embodiment, the air guide plate 51 is formed as a rectangular plate extending upward and downward with a width dimension W1. However, the air guide plate 51 according to the fourth embodiment is the first in that it has an inclination angle of an angle ⁇ from the position (0 ° position) parallel to the flow direction of the cooling air to the radiator 20 side. It differs from the air guide plate 26 according to the embodiment.
- the inclination angle ⁇ of the air guide plate 51 is smaller than the inclination angle ⁇
- the inclination angle ⁇ of the air guide plate 51 is changed to an angle larger than the inclination angle ⁇ . It is good also as composition.
- FIG. 17 shows a fifth embodiment of the present invention.
- the feature of the fifth embodiment is that the area of the air guide plate facing the cooling air is changed.
- the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.
- reference numeral 61 denotes a wind guide plate as a cooling air adjustment member according to the fifth embodiment provided on the connection bracket 22 ′ ′.
- the wind guide plate 61 is used to guide the wind according to the first embodiment. Similar to the wind plate 26, it is formed as a plate inclined at an angle ⁇ from the position parallel to the flow direction of the cooling air to the radiator 20.
- the wind guide plate 61 according to the fifth embodiment is The fifth embodiment differs from the first embodiment in that it has a width dimension W2 larger than the width dimension W1 of the baffle plate 26 according to the first embodiment.
- the wind guide plate 61 has a width dimension W2 larger than the wind guide plate 26 (width dimension W1) according to the first embodiment, and the width dimension W2 of the wind guide plate 61 is, for example, a radiator. It is changed to about 30% of the length dimension L1 of 20.
- the area facing the cooling air can be increased by setting the air guide plate 61 to the wide width dimension W2, so that the flow of many cooling airs is changed.
- the cooling performance of the oil cooler 21 can be controlled.
- the width dimension W2 of the wind guide plate 61 is set to be larger than the width dimension W1 of the wind guide plate 26, but the width dimension W2 of the wind guide plate 61 is greater than the width dimension W1.
- the size may be changed to a smaller size.
- the air guide plate 26 is provided on the connection bracket 22
- the present invention is not limited to this, and may be configured, for example, as a first modified example shown in FIG. That is, the air guide plate 71 is provided separately from the connection bracket 73, and mounting portions 71A are provided on the upper and lower portions of the air guide plate 71, respectively.
- the air guide plate 71 can attach the bolts 72 inserted through the attachment portions 71 A to the support frame 18 ′ of the heat exchange device 17.
- the baffle plate 71 can be provided with a small design change.
- the air guide plate 81 may be attached to the mounting bracket 21E 'of the oil cooler 21' by, for example, means such as welding or bolting. Furthermore, the baffle plate may be attached to the radiator. These configurations are similarly applicable to the other embodiments.
- the radiator 20 and the oil cooler 21 are provided as the cooler, and the case where the oil cooler 21 is small is exemplified, and the air guide plate 26 supplies an appropriate amount of cooling air to the small oil cooler 21.
- the air guide plate 26 may be configured to guide a necessary amount of cooling air toward the radiator 20 .
- an intercooler, a fuel cooler, and the like may be additionally provided as the cooler, and the air guide plate may be used for these coolers to adjust the flow of the cooling air.
- the inclination angle of the air guide plate 51 with respect to the flow direction of the cooling air is changed to the angle ⁇
- the width dimension of the air guide plate 61 is changed to the dimension W2.
- the present invention is not limited to this, and may be configured to change both the angle and the width dimension of the air guide plate.
- the canopy 8 is configured as four columns by the four leg portions 8A and the roof portion 8B is illustrated.
- the present invention is not limited to this, and may be configured to use one, two, three, or five legs as the canopy. This configuration can be applied to the other embodiments as well.
- the crawler type hydraulic shovel 1 was mentioned as an example and demonstrated as a construction machine.
- the present invention is not limited to this, and may be applied to, for example, a hydraulic shovel provided with a wheel type lower traveling body.
- it can be widely applied to other construction machines such as, for example, hydraulic cranes, wheel loaders, and tractors.
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- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
Description
2 下部走行体(車体)
3,32 上部旋回体(車体)
4 作業装置
5 旋回フレーム
9 カウンタウエイト
10 エンジン
11 油圧ポンプ
12 冷却ファン
13 作動油タンク(貯油タンク)
14 燃料タンク(貯油タンク)
16 空間
17,34,41 熱交換装置
20,43 ラジエータ(第1の冷却器)
21,44,21′ オイルクーラ(第2の冷却器)
22,45,22′,22″ 接続ブラケット
26,46,51,61,71,81 導風板(冷却風調整部材)
27 仕切板
35 コンデンサ
L1 ラジエータの長さ寸法
L2 オイルクーラの長さ寸法
α,β 導風板の角度
W1,W2 導風板の幅寸法
Claims (6)
- 自走可能な車体(2,3,32)と、
該車体(2,3,32)に搭載され油圧ポンプ(11)を駆動するエンジン(10)と、
該エンジン(10)を駆動源として回転駆動されることにより冷却風を吸込む方向に発生する冷却ファン(12)と、
該冷却ファン(12)に対面して冷却風の流れ方向の上流側に設けられ冷却風が通過することにより冷却対象となる流体を冷却する第1の冷却器(20,43)と、
前記冷却風の流れ方向に対して該第1の冷却器(20,43)と並列となるように該第1の冷却器(20,43)と並んで配置され冷却風により他の流体を冷却する第2の冷却器(21,44,21′)とを備えてなる建設機械において、
前記第1の冷却器(20,43)と第2の冷却器(21,44,21′)を通過する冷却風の吸込側には、該第1の冷却器(20,43)に供給される冷却風量と第2の冷却器(21,44,21′)に供給される冷却風量の割合を調整する冷却風調整部材(26,46,51,61,71,81)を設ける構成としたことを特徴とする建設機械。 - 前記冷却風調整部材(26,46,51,61,71,81)は、前記第1の冷却器(20,43)と第2の冷却器(21,44,21′)との境界位置に上,下方向に延びて配置され、
前記冷却風調整部材(26,46,51,61,71,81)は、冷却風を必要とする方向に案内するように傾けて配置する構成としてなる請求項1に記載の建設機械。 - 前記冷却風調整部材(26,46,51,61,71,81)は、前記各冷却器(20,21,43,44,21′)に向けて流れる冷却風を導くために、上,下方向に延びた板体からなる導風板として形成し、
前記導風板(26,46,51,61,71,81)は、冷却風に対する角度(α)および/または冷却風に対面する面積を変更可能に設ける構成としてなる請求項1に記載の建設機械。 - 前記第1の冷却器(20,43)は、前記エンジン(10)を冷やすためのエンジン冷却水を冷却するラジエータであり、前記第2の冷却器(21,44,21′)は、各種アクチュエータに供給される作動油を冷却するオイルクーラであり、
前記冷却風調整部材(26,46,51,61,71,81)は、前記ラジエータ(20,43)とオイルクーラ(21,44,21′)に対し、それぞれ冷却に必要な風量を確保するように前記ラジエータ(20,43)とオイルクーラ(21,44,21′)との境界位置に配置する構成としてなる請求項1に記載の建設機械。 - 前記ラジエータ(20,43)の冷却風の流れ方向と直交する方向の長さ寸法(L1)は、前記オイルクーラ(21,44,21′)の冷却風の流れ方向と直交する方向の長さ寸法(L2)よりも大きく形成し、
前記冷却風調整部材(26,46,51,61,71,81)は、長さ寸法の小さなオイルクーラ(21,44,21′)に向けて冷却に必要な冷却風を確保するように前記ラジエータ(20,43)側に傾けて配置する構成としてなる請求項4に記載の建設機械。 - 前記車体は、自走可能な下部走行体(2)と、該下部走行体(2)上に旋回可能に設けられ前側に作業装置(4)が取付けられる上部旋回体(3,32)とにより構成し、
前記上部旋回体(3,32)は、支持構造体を形成する旋回フレーム(5)と、前記作業装置(4)との重量バランスをとるために該旋回フレーム(5)の後側に設けられた円弧状のカウンタウエイト(9)と、該カウンタウエイト(9)の前側に位置して左,右方向に延在する横置き状態で前記旋回フレーム(5)上に搭載された前記エンジン(10)と、該エンジン(10)の前側に位置して前記旋回フレーム(5)に設けられ作動油と燃料をそれぞれ貯える貯油タンク(13,14)とを備え、
前記第1の冷却器(20,43)と第2の冷却器(21,44,21′)は、前記カウンタウエイト(9)とエンジン(10)と貯油タンク(13,14)によって形成される空間(16)に位置して前,後方向に並列に配置する構成としてなる請求項1に記載の建設機械。
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JP2013551550A JP5830110B2 (ja) | 2011-12-26 | 2012-11-30 | 建設機械 |
DE201211005471 DE112012005471T5 (de) | 2011-12-26 | 2012-11-30 | Baumaschine |
US14/353,613 US9255381B2 (en) | 2011-12-26 | 2012-11-30 | Construction machine |
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JP2011283110 | 2011-12-26 | ||
JP2011-283110 | 2011-12-26 |
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US (1) | US9255381B2 (ja) |
JP (1) | JP5830110B2 (ja) |
DE (1) | DE112012005471T5 (ja) |
WO (1) | WO2013099519A1 (ja) |
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JP5830110B2 (ja) | 2015-12-09 |
DE112012005471T5 (de) | 2014-09-04 |
JPWO2013099519A1 (ja) | 2015-04-30 |
US9255381B2 (en) | 2016-02-09 |
US20140301816A1 (en) | 2014-10-09 |
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