JP5859933B2 - Construction machinery - Google Patents

Construction machinery Download PDF

Info

Publication number
JP5859933B2
JP5859933B2 JP2012191794A JP2012191794A JP5859933B2 JP 5859933 B2 JP5859933 B2 JP 5859933B2 JP 2012191794 A JP2012191794 A JP 2012191794A JP 2012191794 A JP2012191794 A JP 2012191794A JP 5859933 B2 JP5859933 B2 JP 5859933B2
Authority
JP
Japan
Prior art keywords
case
storage case
frame
tank
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2012191794A
Other languages
Japanese (ja)
Other versions
JP2014047551A (en
Inventor
宏行 東
宏行 東
泰典 根本
泰典 根本
純 山林
純 山林
小林 敬弘
敬弘 小林
Original Assignee
日立建機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立建機株式会社 filed Critical 日立建機株式会社
Priority to JP2012191794A priority Critical patent/JP5859933B2/en
Publication of JP2014047551A publication Critical patent/JP2014047551A/en
Application granted granted Critical
Publication of JP5859933B2 publication Critical patent/JP5859933B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

  The present invention relates to a construction machine such as a hydraulic excavator equipped with a reducing agent tank for storing a liquid reducing agent such as urea water.
  In general, a hydraulic excavator, which is a representative example of a construction machine, is a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and can be raised and raised on the front side of the upper revolving body. And a working device provided.
  The upper swing body includes a swing frame forming a support structure member, an engine mounted on the rear side of the swing frame, and a cab provided on the left front side of the swing frame on the left side of the working device, In the cab, a driver's seat on which an operator sits is provided.
  A mounting bracket for mounting the work device is provided on the middle of the revolving frame in the left and right directions. Oil storage tanks such as a fuel tank for storing fuel and a hydraulic oil tank for storing hydraulic oil are provided on the left and right outer sides of the revolving frame on the opposite side of the cab across the work device. The oil storage tank is disposed so that the front end thereof is located on the rear side of the mounting bracket of the revolving frame. This prevents the oil storage tank from getting in the way when the connecting pin that rotatably attaches the work device to the mounting bracket is inserted and removed.
  On the other hand, a diesel engine is used as an engine of a hydraulic excavator. This diesel engine is said to emit a large amount of nitrogen oxides (hereinafter referred to as NOx). Therefore, there is a NOx purification device for purifying NOx as a post-treatment device for exhaust gas of a diesel engine. This NOx purification device includes, for example, a urea selective reduction catalyst that is provided in an exhaust pipe of an engine and removes nitrogen oxides in exhaust gas, a reducing agent tank that stores an aqueous urea solution as a reducing agent, and an aqueous urea solution in the reducing agent tank Is formed by a urea injection valve that injects the gas to the upstream side of the urea selective reduction catalyst, and a connection pipe that connects the reducing agent tank and the urea injection valve.
  When a reducing agent tank is provided in a hydraulic excavator, it is desirable to set a large capacity in order to reduce the number of times of water supply. However, since many devices are mounted on the hydraulic excavator, it is difficult to secure a space for installing a new reducing agent tank.
  Here, the front end of the oil storage tank is arranged behind the mounting bracket of the swivel frame, and the storage case such as tools provided on the front side of the oil storage tank is connected so that it does not get in the way when inserting and removing the connection pin. It is formed at a position lower than the extension line of the pin axis. For this reason, there is a space that is not used except when the work device is attached and detached, on the front side of the oil storage tank and above the storage case.
  Therefore, it is conceivable to install a reducing agent tank using the space above the storage case on the front side of the oil storage tank. In this case, the reducing agent tank needs to be able to be retracted from this work space so that the connecting pin can be inserted and removed. As a conventional hydraulic excavator having such a configuration, for example, a bracket that is movable in the left, right, or upward direction is provided on the front surface of the oil storage tank, and a reducing agent tank is attached to the bracket. (For example, refer to Patent Document 1).
JP 2011-58247 A
  By the way, the reducing agent tank filled with the urea aqueous solution has a weight exceeding several tens of kilograms or 100 kilograms. For this reason, in order to support a reducing agent tank so that movement is possible like patent document 1, the rigidity of a supporting member, such as a hinge and a rail, and an oil storage tank to which a reducing agent tank is attached, must be improved. Moreover, since a large force is required to move the reductant tank, work by multiple persons and work using a crane are required, and a great deal of labor is required to attach and detach the work device. There is a problem of becoming.
  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 tool, a spare part, a reducing agent tank, etc. on the front side of an oil storage tank by utilizing a space for attaching and detaching a working device. It is an object of the present invention to provide a construction machine that can be provided with a housing case for housing the work apparatus and that can easily attach and detach the work device.
  A construction machine according to the present invention includes a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a work device that is provided on the upper revolving body so as to be able to move up and down. The upper revolving body is located on the front side and is provided with a revolving frame provided with a mounting bracket for attaching the working device to the middle part in the left and right directions, and a front end is a rear side of the mounting bracket of the revolving frame And an oil storage tank disposed on the left and right sides of the revolving frame.
In order to solve the above-described problem, the feature of the configuration adopted by the invention of claim 1 is that, on the front side of the revolving frame, on the left side and the right side of the mounting bracket and on the oil storage tank. A first storage case is provided that is positioned on the front side and stores an article therein, and the upper rear side of the first storage case is positioned on the outside in the left and right directions with respect to the mounting bracket. a second housing case for housing the provided wherein a front portion of the second housing case between the first housing case, the rotation support member is provided, said second housing cases, said By rotating to the front side with the rotation support member as the center, it is configured to move in a direction away from the oil storage tank.
A feature of the configuration adopted by the invention of claim 2 is that the article is accommodated in the front side of the swivel frame, located on the left and right sides of the mounting bracket and on the front side of the oil storage tank. A first storage case is provided, and on the upper rear side of the first storage case, a second storage case is provided that is located on the left and right sides of the mounting bracket and stores articles therein. An assembly is configured, a rotation support member is provided between the front portion of the first storage case and the turning frame, and the assembly of the first storage case and the second storage case includes: By rotating to the front side around the rotation support member, it is configured to move in a direction away from the oil storage tank.
A feature of the configuration adopted by the invention of claim 3 is that the front side of the revolving frame is located on the left side and the right side of the mounting bracket and on the front side of the oil storage tank, and stores articles therein. A second storage case that is provided with a first storage case, and is located between the first storage case and the oil storage tank on the outside of the mounting bracket on the left and right sides, and stores articles therein. The first storage case and the second storage case constitute one assembly stacked in the front and rear directions, and the front portion of the first storage case and the swivel frame A rotation support member is provided between the oil storage tank and the assembly of the first storage case and the second storage case is rotated forward about the rotation support member. The configuration is such that it is moved away.
According to a fourth aspect of the present invention, a mounting pin for connecting the work device to the mounting bracket is detachably provided on the mounting bracket of the swivel frame. It is to be arranged on the extension line of the axis of the connecting pin that is in the insertion / removal direction.
The invention of claim 5, when the front Stories second housing case is placed on the mounting position, mounting the rear portion of the front Stories second housing case to said first housing case, a fixing member for removably fixing It is that it was set as the structure which provides.
According to a sixth aspect of the present invention, there is provided a fixing member that attaches a rear portion of the first housing case to the swivel frame and detachably fixes the first housing case when the first housing case is placed at the installation position. There is.
According to a seventh aspect of the present invention, there is provided a configuration in which when the second storage case is placed at the installation position, a rear member of the second storage case is attached to the revolving frame, and a fixing member is provided for removably fixing. There is.
According to an eighth aspect of the present invention, of the first storage case and the second storage case, the storage case attached to the swivel frame is provided with a reducing agent tank for storing a liquid reducing agent, and the reducing agent tank Is that it is configured to be placed on the revolving frame.
According to a ninth aspect of the present invention, the rotation support member is located at the front end of the second housing case and supports the second housing case so that the second housing case can pivot about the left and right axes. It lies in that it has a hinge that Ges.
According to a tenth aspect of the present invention, the rotation support member is located at a front end portion of the first housing case, and is a hinge that rotatably supports the assembly about the left and right axes as a rotation center. It is to have done.
According to the first , second, and third aspects of the invention, the front side of the swivel frame is located on the left side and the right side of the swivel frame mounting bracket and on the front side of the oil storage tank, and stores articles therein. A first storage case is provided. In addition, according to the first and second aspects of the present invention, the second housing that houses the article in the upper rear side of the first housing case is located on the left and right outside of the mounting bracket. A case is provided. On the other hand, according to the invention of claim 3, between the first storage case and the oil storage tank, the second storage that is located outside the mounting bracket in the left and right directions and stores the article therein. A case is provided.
According to the first aspect of the present invention , the rotation support member is provided between the front portion of the second storage case and the first storage case. Thus, the second housing cases can be moved in a direction away from the oil storage tank by rotating the front around the rotation support member. On the other hand, according to invention of Claim 2, 3, it is set as the structure which provides a rotation support member between the front part of a 1st accommodating case, and a turning frame. Thereby, the assembly of the first storage case and the second storage case can be moved in a direction away from the oil storage tank by rotating forward about the rotation support member.
Therefore, according to the first aspect of the present invention, the working space for attaching and detaching the working device to the left and right sides of the mounting bracket is provided by rotating the second housing case forward and away from the oil storage tank. Can be secured. On the other hand, according to the second and third aspects of the invention, the assembly of the first storage case and the second storage case is rotated forward and away from the oil storage tank, so that the mounting bracket can be moved in the left and right directions. A work space for attaching and detaching the work device to the outside can be secured. In this case, since only the storage case can be rotated forward, the storage case can be moved with a light force.
As a result, a storage case can be provided using a work space for attaching and detaching the work device, and tools, spare parts, a reducing agent tank, and the like can be efficiently stored. On this, according to the first aspect of the invention, when performing the attachment and detachment work of the working device can be made only the second housing cases around the rotation support member rotates to the front working mechanism A work space for attaching and detaching can be easily secured. On the other hand, according to the second and third aspects of the invention, when the work device is attached and detached, the assembly of the first storage case and the second storage case is rotated forward about the rotation support member. It is possible to easily secure a work space for attaching and detaching the work device. Thereby, workability | operativity when attaching / detaching a working apparatus can be improved.
According to the fourth aspect of the present invention, the mounting bracket of the swivel frame is provided so that the connecting pin for connecting the work device to the mounting bracket can be inserted and removed. In this case, the second storage case is disposed on an extension line of the axis of the connection pin that is in the insertion / removal direction of the connection pin. However, the connecting pin can be inserted and removed by rotating the second storage case or the assembly including the second storage case forward about the rotation support member.
According to the fifth aspect of the present invention, since the rear portion of the second storage case is attached to the rear portion of the first storage case and the fixing member for removably fixing is provided , the second storage case is placed at the installation position. when location, by using the fixing member, it is possible to fix the second housing cases in place. According to the sixth aspect of the present invention, since the rear portion of the first housing case is attached to the revolving frame and the fixing member for removably fixing is provided, when the first housing case is placed at the installation position, By using this fixing member, the assembly including the first housing case can be fixed at a predetermined position. According to the seventh aspect of the present invention, since the rear portion of the second storage case is attached to the revolving frame and the fixing member for removably fixing is provided, when the second storage case is placed at the installation position, By using this fixing member, the assembly including the second storage case can be fixed at a predetermined position.
According to the eighth aspect of the present invention, of the first storage case and the second storage case, the storage case attached to the swivel frame is provided with the reducing agent tank for storing the liquid reducing agent, It is set as the structure mounted on a turning frame. Thereby, when the storage case is rotated to the front side around the rotation support member, only the storage case can be moved in a state in which the reducing agent tank, which is a heavy object, is left on the rotation frame side. Furthermore, the capacity | capacitance of a reducing agent tank can be set large using the big space formed over the storage case and the turning frame.
According to the invention of claim 9, the rotation support member is left positioned at the front end portion of the second housing case, supporting the second housing case as the pivot center to the right direction of the axis rotatably lifting It is the hinge you. Thus, it is possible to rotate the second housing cases with a simple structure using the hinge. According to the invention of claim 10, the rotation support member is a hinge that is positioned at the front end portion of the first housing case and supports the assembly rotatably about the left and right axes. . Thereby, the assembly can be rotated with a simple configuration using a hinge.
It is a front view which shows the hydraulic shovel applied to the 1st Embodiment of this invention. It is a top view which shows the hydraulic excavator of the state which abbreviate | omitted a part of building cover. It is a top view which shows a turning frame alone. It is a perspective view of the principal part expansion which shows the front side part of a turning frame, a fuel tank, and each storage case. It is sectional drawing of the principal part expansion which looked at the turning frame and a part of fuel tank, the 1st storage case, the 2nd storage case, and the reducing agent tank from the arrow VV direction in FIG. It is an expanded sectional view which expands and shows the A section in FIG. It is the disassembled perspective view of the principal part expansion which looked at the state which rotated the 2nd storage case to the front side, and formed the insertion / extraction space of the connection pin from the same position as FIG. FIG. 6 is an enlarged cross-sectional view of a main part of a first storage case and a second storage case according to a second embodiment of the present invention viewed from the same position as in FIG. 5 together with a turning frame, a fuel tank, a reducing agent tank, and the like. is there. FIG. 5 is an enlarged perspective view of a main part when a state in which an assembly composed of a first housing case and a second housing case is rotated to the front side to form an insertion / removal space for a connecting pin is viewed from the same position as in FIG. 4. Sectional drawing of the principal part expansion which looked at the 1st storage case by the 3rd Embodiment of this invention, the 2nd storage case, and the reducing agent tank from the same position as FIG. 5 with the turning frame, the fuel tank, etc. It is. It is the perspective view of the principal part expansion which looked at the 1st storage case and the 2nd storage case by the 4th Embodiment of this invention with the turning frame, the fuel tank, etc. from the same position as FIG. It is a disassembled perspective view of the principal part expansion which shows the attachment structure of the 2nd storage case with respect to a 1st storage case. It is the perspective view of the principal part expansion which looked at the state which rotated the 2nd storage case to the front side, and formed the insertion / extraction space of the connection pin from the same position as FIG.
  Hereinafter, as a construction machine according to an embodiment of the present invention, a crawler type hydraulic excavator will be described as an example and described in detail with reference to the accompanying drawings.
  1 to 7 show a first embodiment of the present invention. In the first embodiment, a second storage case is arranged on the upper side of the first storage case, and the second storage case is rotated forward to bring down the space for inserting and removing the connecting pin. The case where it is set as the structure to form is illustrated.
  In FIG. 1, reference numeral 1 denotes a hydraulic excavator as a construction machine used for earth and sand excavation work and the like. The hydraulic excavator 1 includes a self-propelled crawler-type lower traveling body 2, an upper revolving body 3 that is swingably mounted on the lower traveling body 2, and can be raised and lowered to the front side of the upper revolving body 3. The working device 4 is provided.
  The work device 4 includes a boom 4A, an arm, and a bucket (all not shown), and these are rotated by a boom cylinder 4B, an arm cylinder, and a bucket cylinder (none shown). In the boom 4A, the foot part 4A1 at the base end thereof is disposed between the mounting brackets 5B1 and 5C1 of the left and right vertical plates 5B and 5C of the revolving frame 5, which will be described later, and the pin insertion holes 5B2 of the vertical plates 5B and 5C. 5C2 is connected to the vertical plates 5B and 5C by inserting connecting pins 4C (see FIG. 7) into pin insertion holes 4A2 formed in the foot portion 4A1. The connecting pin 4C can be removed by pulling it out to the right side, which is the opposite side of the cab 10 described later, in the left and right directions, and can also be inserted from the right side.
  As shown in FIG. 2, the upper swing body 3 includes a swing frame 5, an engine 6, a cab 10, a hydraulic oil tank 11, a fuel tank 12, a first storage case 13, a second storage case 16, and NOx purification. The apparatus 21 and the reducing agent tank 22 are configured.
  Reference numeral 5 denotes a turning frame as a turning frame. As shown in FIG. 3, the revolving frame 5 has a thick bottom plate 5A extending in the front and rear directions, and is erected on the bottom plate 5A and extends in the front and rear directions at a predetermined interval in the left and right directions. A left vertical plate 5B, a right vertical plate 5C, a plurality of overhanging beams 5D extending from the bottom plate 5A, the vertical plates 5B, 5C outward in the left and right directions and spaced apart in the rear direction, The left side frame 5E and the right side frame 5F, which are located on the outer side in the right direction and are attached to the ends of the overhanging beams 5D and extend in the front and rear directions, are configured as support structural members.
  On the other hand, a front beam 5G is provided at the front end of the right side frame 5F so as to extend to the left side. The left end of the front beam 5G extends from the overhanging beam 5D located at the front to the right end of the bottom plate 5A in the front and rear directions. Attached to the front end of the inner beam 5H. The overhanging beam 5D, the front portion of the right side frame 5F, the front beam 5G, and the inner beam 5H serve as a support base that supports the periphery of the first housing case 13 described later. An under cover 5J (see FIG. 5) is provided on the inner side surrounded by the overhanging beam 5D, the front portion of the right side frame 5F, the front beam 5G, and the inner beam 5H and located on the bottom side. A front plate of the front beam 5G is provided with a footrest plate 5K that protrudes to the front side. The footrest plate 5K constitutes a first step in which a foot is first placed when the footrest plate 5K rides on the upper swing body 3. .
  Further, as shown in FIG. 9, a gate-shaped case support frame 5 </ b> L is attached to the overhanging beam 5 </ b> D located at the front portion so as to extend upward along the front plate 12 </ b> A of the fuel tank 12. The case support frame 5L forms a part of the revolving frame 5 and forms a mounting base to which the rear portion of the upper surface portion 13E of the first housing case 13 is attached.
  Here, the left and right vertical plates 5B and 5C are mounting brackets 5B1 and 5C1 for attaching the foot portion 4A1 of the boom 4A constituting the work device 4 at the front side positions thereof. As shown in FIG. 4, pin insertion holes 5B2 and 5C2 are formed in the upper portions of the mounting brackets 5B1 and 5C1 so as to be coaxial in the left and right directions, and each of the pin insertion holes 5B2 and 5C2 has a work. The connecting pin 4C of the device 4 is inserted.
  Reference numeral 6 denotes an engine (see FIG. 2) provided on the rear side of the turning frame 5. The engine 6 is configured as a diesel engine, and is mounted on the turning frame 5 in a horizontally placed state, for example. The engine 6 is provided with an exhaust pipe 7 for discharging exhaust gas.
  The diesel engine 6 is highly efficient and excellent in durability, but harmful substances such as nitrogen oxides (NOx) are discharged together with the exhaust gas. Therefore, a NOx purification device 21 to be described later attached to the exhaust pipe 7 houses a urea selective reduction catalyst 21B and an oxidation catalyst 21C for removing nitrogen oxides (NOx) in the housing cylinder 21A.
  Reference numeral 8 denotes a heat exchange device provided on the left side of the engine 6, and the heat exchange device 8 includes a radiator that cools engine cooling water, an oil cooler that cools hydraulic oil, an intercooler that cools air taken in by the engine 6, and the like. ing. On the other hand, 9 is a hydraulic pump attached to the right side of the engine 6, and the hydraulic pump 9 is driven by the engine 6 to discharge hydraulic oil from the hydraulic oil tank 11 as pressure oil.
  Reference numeral 10 denotes a cab provided on the left front side of the revolving frame 5. The cab 10 is used by an operator to drive the excavator 1, and includes a driver's seat on which the operator is seated, a lever for performing various operations, a pedal, and the like (all not shown). ing.
  Reference numeral 11 denotes a hydraulic oil tank as an oil storage tank which is located on the front side of the engine 6 and provided on the right side of the revolving frame 5. The hydraulic oil tank 11 stores hydraulic oil therein, and is formed as a rectangular parallelepiped pressure-resistant tank that extends upward and downward.
  Reference numeral 12 denotes a fuel tank as an oil storage tank provided on the right side of the revolving frame 5 so as to be adjacent to the front side of the hydraulic oil tank 11. The fuel tank 12 has a front plate 12A, which will be described later, which is the front end of the revolving frame 5. The front and rear positions of the revolving frame 5 are located at the front and rear positions of the vertical plates 5B and 5C. It is disposed outside the direction, that is, on the right side of the right vertical plate 5C. Specifically, the fuel tank 12 has a front plate 12A on the rear side of the pin insertion holes 5B2 and 5C2 formed in the mounting brackets 5B1 and 5C1 so that it does not get in the way when the connecting pin 4C of the working device 4 is inserted and removed. Has been placed.
  The fuel tank 12 stores fuel therein, and is formed as a rectangular parallelepiped tank by a front plate 12A, a rear plate 12B, a left side plate 12C, a right side plate 12D, an upper plate 12E, and a lower plate 12F. The upper surface plate 12E is provided with an oil supply port 12G for supplying fuel so as to protrude upward.
  Next, the structure of the 1st accommodation case 13 and the 2nd accommodation case 16 provided in the right front part of the turning frame 5 is demonstrated. The first storage case 13 and the second storage case 16 are overlapped in the upward and downward directions so that the first storage case 13 is positioned on the lower side and the second storage case 16 is positioned on the upper side. Are arranged.
  Reference numeral 13 denotes a first housing case that is located on the right side of the revolving frame 5 and is provided on the front side of the fuel tank 12, that is, on the right front end of the revolving frame 5. As shown in FIG. 5, the first storage case 13 is, for example, a space on the under cover 5J surrounded by the extended beam 5D of the revolving frame 5, the front part of the right side frame 5F, the front beam 5G, and the inner beam 5H. Is used to define a tank housing space 15 having a large volume, which will be described later.
  The first storage case 13 has, for example, a length dimension in the front and rear directions from the front plate 12A of the fuel tank 12 to the front end of the front beam 5G of the revolving frame 5, and has a width dimension equivalent to the width dimension of the fuel tank 12. Moreover, it is formed as a rectangular parallelepiped container that is flat in the downward direction. That is, as shown in FIGS. 4 and 5, the first housing case 13 is positioned near the front plate 13 </ b> A formed from the front end of the front beam 5 </ b> G of the revolving frame 5 and the front plate 12 </ b> A of the fuel tank 12. A rear surface portion 13B, a left side surface portion 13C and a right side surface portion 13D that connect the end portion of the front surface portion 13A and the end portion of the rear surface portion 13B, and a substantially square shape that closes the upper side of each of the surface portions 13A to 13D. The upper surface portion 13E and the lower surface portion 13F provided at the lower ends of the surface portions 13A to 13D.
  Here, the rear surface portion 13B is formed as a rectangular frame-like plate body having a large opening at the center portion. However, the rear surface portion 13B is close to the front plate 12A of the fuel tank 12 so as to face the front plate 12A. Further, the lower surface portion 13F is also formed as a square frame-like plate body having a large opening at the center portion, similarly to the rear surface portion 13B. Thus, the first storage case 13 has a bottom-out structure, and cooperates with the lower turning frame 5 to define a large tank storage space 15.
  The first housing case 13 is provided with an opening 13G for supplying water to a reducing agent tank 22 to be described later, located near the center in the left and right directions of the front surface portion 13A and the upper surface portion 13E. The upper surface portion 13E is covered with a cover 13H attached to the upper surface portion 13E via a hinge 13H1 so as to be opened and closed (turned). The cover 13H is provided with a locking function for preventing mischief and the like.
  Furthermore, as shown in FIG. 5, the height of the upper surface portion 13E of the first housing case 13 is set to be low. As a result, the first housing case 13 can be disposed at a position that does not interfere when the connecting pin 4C of the work device 4 is inserted and removed, and the first housing case 13 is easily put on as a next step of the footrest plate 5K of the swivel frame 5. be able to.
  The first storage case 13 configured in this manner has a front portion of the lower surface portion 13F attached to the front beam 5G of the swivel frame 5 using a plurality of bolts 14, and a rear portion of the upper surface portion 13E having a plurality of pieces. It is attached to the upper part of the case support frame 5L using bolts 14. As a result, the first housing case 13 is positioned on the front side of the fuel tank 12 and is fixedly attached to the front side of the revolving frame 5.
  Reference numeral 15 denotes a tank storage space defined in the first storage case 13. The tank housing space 15 is formed with a large volume in a range from the upper surface portion 13E to the under cover 5J of the revolving frame 5 by making the first housing case 13 a bottom-out structure. In the tank housing space 15, a reducing agent tank 22 described later is housed.
  Reference numeral 16 denotes a second accommodation case provided on the upper rear side of the first accommodation case 13. The second housing case 16 is disposed in the direction in which the connecting pin 4C of the work device 4 is inserted or removed, that is, on the extension of the axis of the connecting pin 4C. The length dimension in the front and rear directions of the second storage case 16 is set to, for example, about half of the length dimension in the front and rear directions of the first storage case 13, and the width dimension is, for example, the first storage case. The dimension is set to be slightly shorter than 13. On the other hand, the second storage case 16 is mounted on the upper surface portion 13E of the first storage case 13, and an article storage space 19 to be described later is defined therein. The second storage case 16 can be stepped on as a third step when going up to the fuel tank 12.
  The second storage case 16 is configured as a horizontally long box-shaped container having a lower side opened by a front surface portion 16A, a rear surface portion 16B, a left side surface portion 16C, a right side surface portion 16D, and an upper surface portion 16E. The second housing case 16 is provided with an opening 16F extending from the front surface portion 16A to the upper surface portion 16E, and the opening 16F opens in a wide range in the left and right directions, so that a tool box 24 and the like to be described later can be provided. It can be easily put in and out of the article storage space 19. Further, the second housing case 16 is provided with a cover 16G at a position closing the opening 16F, and the cover 16G can cover the opening 16F extending from the front surface portion 16A to the upper surface portion 16E when closed. It is formed as a plate body bent into an L shape. The cover 16G has a rear base end portion attached to the upper portion of the rear surface portion 16B via a hinge 16G1 so that the cover 16G can be opened and closed (turned). The cover 16G is provided with a locking function for preventing mischief and the like.
  Here, a configuration of a hinge 17 as a rotation support member and a latch 18 as a fixing member provided to attach the second storage case 16 to the first storage case 13 will be described.
  Reference numeral 17 denotes a hinge as a rotation support member provided between the front end portion of the first housing case 13 and the second housing case 16. The hinges 17 are disposed with the left and right axes as the center of rotation. For example, two hinges 17 are provided at intervals in the left and right directions. One attachment portion of each hinge 17 is attached to a lower portion of the front surface portion 16A forming the second housing case 16 by means such as welding. The other attachment portion of each hinge 17 is attached to an intermediate position in the front and rear direction of the upper surface portion 13E of the first housing case 13 using a bolt 14. As a result, as shown in FIG. 7, each hinge 17 can rotate (fall down) the second housing case 16 forward by lifting the rear side of the second housing case 16. Since the second storage case 16 can be moved away from the fuel tank 12 when the second storage case 16 is moved forward, the space between the fuel tank 12 and the second storage case on the first storage case 13 can be reduced. An insertion / removal space 20 described later can be formed.
  On the other hand, reference numeral 18 denotes a latch as a fixing member for fixing the rear portion of the second storage case 16 to the rear portion of the first storage case 13, and the two latches 18 are provided, for example, at intervals in the left and right directions. Yes. When each latch 18 is placed at an installation position (a position indicated by a solid line in FIG. 5) where the rear side of the second storage case 16 is disposed on the first storage case 13, the second storage case 16. The rear surface portion 16B is fixed to the upper surface portion 13E of the first housing case 13, and can be fixed and released by an operation with a fingertip without using a tool or the like. On the other hand, when the fixing by the latches 18 is released, as shown by a two-dot chain line in FIG. 5, the second housing case 16 can be tilted forward from the installation position.
  That is, as shown in FIG. 6, each latch 18 is located on the inner side (front side) of the rear surface portion 16 </ b> B of the second housing case 16 and fixed to the upper surface portion 13 </ b> E of the first housing case 13. A lever 18B rotatably attached to the rear surface portion 16B of the second housing case 16 so as to correspond to the fixing hook 18A, and a position shifted from the rotation center of the lever 18B. A U-shaped arm 18C that can be engaged with the hook 18A. The lever 18B is provided with a spring member (not shown) that urges the arm 18C to the side opposite to the fixed hook 18A.
  Thereby, as shown by a two-dot chain line in FIG. 6, the latch 18 can hang or disengage the arm 18 </ b> C from the fixed hook 18 </ b> A when the lever 18 </ b> B is tilted. The latch 18 can fix the rear portion of the second housing case 16 to the rear portion of the first housing case 13 by returning the lever 18B to the upper side while the arm 18C is hooked on the fixing hook 18A.
  Reference numeral 19 denotes an article storage space defined in the second storage case 16. The article accommodation space 19 accommodates a tool box 24 described later, a spare urea water bottle 25, various consumables (not shown), and the like.
  Reference numeral 20 denotes an insertion / removal space for the connecting pin 4C formed between the fuel tank 12 and the second accommodation case on the first accommodation case 13 when the second accommodation case 16 is rotated forward. In the state where the insertion / removal space 20 is formed, the connection pin 4C connecting the foot portion 4A1 of the boom 4A of the work device 4 to the mounting brackets 5B1, 5C1 of the vertical plates 5B, 5C of the revolving frame 5 is inserted / removed. The working device 4 can be attached to and detached from the upper swing body 3.
  21 is a NOx purification device provided in the exhaust pipe 7 of the engine 6 (see FIG. 2). The NOx purification device 21 purifies nitrogen oxide (NOx) in exhaust gas using a urea aqueous solution (hereinafter referred to as urea water) serving as a reducing agent. The NOx purification device 21 is disposed on the downstream side of the accommodation cylinder 21A connected to the exhaust pipe 7, the urea selective reduction catalyst 21B accommodated upstream in the accommodation cylinder 21A, and the urea selective reduction catalyst 21B. The oxidation catalyst 21 </ b> C and the urea injection valve provided on the upstream side of the urea selective reduction catalyst 21 </ b> B, for example, in the exhaust pipe 7 are configured. The urea injection valve is connected to the reducing agent tank 22 via a supply pump and a supply pipe (both not shown).
  Here, the NOx purification device 21 injects urea water into the exhaust gas by the urea injection valve, causes the NOx in the exhaust gas to undergo a reduction reaction using ammonia generated from the urea water by the urea selective reduction catalyst 21B, And decompose into nitrogen. Then, ammonia in the exhaust gas is reduced by the oxidation catalyst 21C.
  Reference numeral 22 denotes a reducing agent tank housed in the tank housing space 15 of the first housing case 13. The reducing agent tank 22 stores urea water supplied into the exhaust gas flowing through the exhaust pipe 7 on the upstream side of the urea selective reduction catalyst 21B of the NOx purification device 21. For example, the reducing agent tank 22 is mounted in a state of being supported by a support bracket 23 whose rear side is erected on the under cover 5J of the swivel frame 5 so as to be accommodated in the tank accommodation space 15 of the first accommodation case 13. For example, a belt, a bolt, etc. (all not shown) are fixed.
  Specifically, the reducing agent tank 22 is formed as a sealed container having a height that can be accommodated in the tank housing space 15, and is supported by the revolving frame 5 in the tank housing space 15 by the support bracket 23. The reducing agent tank 22 includes a front surface portion 22A, a rear surface portion 22B, a left side surface portion (not shown), a right side surface portion 22C, an upper surface portion 22D, and a lower surface portion 22E, and urea water is supplied to a front position of the upper surface portion 22D. A water supply port 22F is provided obliquely upward. Thereby, in the state which opened the cover 13H of the 1st storage case 13, urea water can be easily supplied to the water supply port 22F.
  Here, since the reducing agent tank 22 can be housed alone in the large tank housing space 15 between the first housing case 13 and the under cover 5J of the swivel frame 5, the amount necessary to operate for a long time. It has a sufficient capacity to store the urea water.
  Reference numeral 24 denotes a tool box accommodated in the article accommodation space 19 of the second accommodation case 16, and 25 denotes a spare urea water bottle accommodated in the article accommodation space 19. In the tool box 24, a spanner, a driver, a grease gun, etc. (all not shown) used for maintenance are accommodated.
  The hydraulic excavator 1 according to the first embodiment has the above-described configuration. Next, the operation thereof will be described.
  An operator boarding the cab 10 starts the engine 6 and drives the hydraulic pump 9. In this state, the lower traveling body 2 can be moved forward or backward by operating a traveling lever or the like. On the other hand, by operating the working lever, the working device 4 can be moved up and down to perform excavation work of earth and sand.
  During operation of the engine 6, nitrogen oxides (NOx), which are harmful substances, are discharged from the exhaust pipe 7. At this time, the urea aqueous solution in the reducing agent tank 22 is supplied to the urea injection valve of the NOx purification device 21. At this time, the NOx purification device 21 generates ammonia by injecting an aqueous urea solution into the exhaust gas from the urea injection valve. Thereby, in the urea selective reduction catalyst 21B, the nitrogen oxides can be reduced to water and nitrogen, and discharged to the outside through the oxidation catalyst 21C, thereby reducing the discharge amount of nitrogen oxides.
  On the other hand, when the urea water is supplied to the reducing agent tank 22, the cover 16 </ b> G of the second storage case 16 is opened upward, and the urea water bottle 25 stored in the article storage space 19 is taken out. Thus, when the urea water bottle 25 is taken out, the urea water in the bottle 25 can be replenished from the water supply port 22F of the reducing agent tank 22 by opening the cover 13H of the first housing case 13 upward. .
  When fuel is supplied to the fuel tank 12, a foot is placed on the footrest plate 5 </ b> K of the swivel frame 5 from the lower traveling body 2, and subsequently, the feet are sequentially conveyed to the first storage case 13 and the second storage case 16. By this, it is possible to get on the upper surface plate 12E of the fuel tank 12. In this state, fuel can be supplied to the fuel tank 12 from the fuel filler opening 12G.
  Furthermore, the case where the boom 4A of the working device 4 is removed from the turning frame 5 will be described. In this case, after taking out the tool box 24 and the like housed in the second housing case 16, a hand is inserted through the opening 16F, the lever 18B of each latch 18 is tilted forward, and the arm 18C is fixed to the fixing hook 18A. Disconnect from. When the fixing by the latches 18 is released, the rear side of the second storage case 16 is lifted, and the second storage case 16 is rotated (turned down) to the front side. When the second storage case 16 is brought forward, an insertion / removal space 20 is formed on the right side of the right vertical plate 5 </ b> C between the fuel tank 12 and the second storage case 16 on the first storage case 13. Can do. In this state, the connecting pins 4C inserted in the pin insertion holes 5B2 and 5C2 of the left and right vertical plates 5B and 5C are pulled out to the insertion / removal space 20 side (right side). The boom 4A can be removed from the 5C mounting brackets 5B1 and 5C1. By performing this procedure in reverse, the boom 4A can be attached to the mounting brackets 5B1 and 5C1 of the left and right vertical plates 5B and 5C.
  Thus, according to the first embodiment, on the right front side of the revolving frame 5, the left and right vertical plates 5B and 5C are located on the right side of the mounting brackets 5B1 and 5C1 and on the front side of the fuel tank 12. A first storage case 13 having a tank storage space 15 inside is provided. On the upper rear side of the first storage case 13, a second storage case 16 is provided which is located on the right side of the mounting brackets 5B1 and 5C1 and whose interior is an article storage space 19. In addition, a hinge 17 is provided between the front portion of the second housing case 16 and the first housing case 13 so as to support the second housing case 16 so as to be pivotable forward and backward. Yes. Thereby, the second storage case 16 can be moved in a direction away from the fuel tank 12 by rotating forward about the hinge 17.
  Therefore, by rotating the second storage case 16 forward and away from the fuel tank 12, an insertion / removal space 20 for attaching and detaching the connecting pin 4C is secured on the left side and the right side of the mounting brackets 5B1 and 5C1. be able to. In this case, by removing the tool box 24, the urea water bottle 25, etc. accommodated in the second accommodation case 16, only the second accommodation case 16 needs to be rotated forward, so that it is light. The second housing case 16 can be moved by force.
  As a result, the second housing case 16 can be provided using the insertion / removal space 20 of the connecting pin 4C for attaching and detaching the work device 4, and the tool box 24, the urea water bottle 25, etc. can be efficiently housed. Can do. On this basis, when the work device 4 is attached / detached, the second housing case 16 can be easily rotated forward with the hinge 17 as the center, and the insertion / removal space 20 for the connecting pin 4C can be easily secured. be able to. Thereby, workability | operativity when attaching / detaching the working apparatus 4 can be improved.
  Since a latch 18 as a fixing member is provided between the rear portion of the second storage case 16 and the rear portion of the first storage case 13, the second storage case 16 can be mounted by using the latch 18. It can be fixed at a predetermined position facing the fuel tank 12 and facing it. Moreover, the latch 18 can be fixed or released by simply rotating the lever 18B with a fingertip, and the second housing case 16 can be easily rotated.
  On the other hand, a reducing agent tank 22 for storing an aqueous urea solution is provided in the first housing case 13 attached to the turning frame 5, and the reducing agent tank 22 is configured to be placed on the turning frame 5. Thereby, the capacity | capacitance of the reducing agent tank 22 can be set large using the big tank storage space 15 formed over the 1st storage case 13 and the turning frame 5. FIG.
  Further, a hinge 17 having a rotation center about the left and right axes is applied as a rotation support member, and the second housing case 16 is rotatably supported by the hinge 17. Thereby, the second housing case 16 can be rotated with a simple configuration using the hinge 17.
  Next, FIG. 8 and FIG. 9 show a second embodiment of the present invention. The feature of the present embodiment is that the assembly of the first storage case and the second storage case is rotated forward about the rotation support member, thereby separating each storage case from the oil storage tank. It is that it was made the structure moved to. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  In FIG. 8, reference numeral 31 denotes a first housing case according to the second embodiment. The first storage case 31 is located on the right side of the revolving frame 5 and on the front side of the fuel tank 12 in substantially the same manner as the first storage case 13 according to the first embodiment. However, the first housing case 31 according to the second embodiment is different from the first housing case 13 according to the first embodiment in that the first housing case 31 is rotatably attached to the revolving frame 5. ing.
  That is, the first housing case 31 includes a front surface portion 31A, a rear surface portion 31B, a left side surface portion 31C, a right side surface portion 31D, and an upper surface portion 31E. The rear surface portion 31B is formed as a rectangular frame-shaped plate body having a large opening at the center. On the other hand, an opening 31F is provided across the front surface portion 31A and the upper surface portion 31E, and the opening 31F is covered with a cover 31G so as to be opened and closed.
  Here, three bolt insertion holes 31H (see FIG. 9) are formed in the rear portion of the upper surface portion 31E facing the case support frame 5L of the revolving frame 5 with an interval in the left and right directions, for example. The three bolt insertion holes 31H are for receiving a fixing bolt 33 (described later) for fixing the rear portion of the first housing case 31 to the revolving frame 5 side.
  Next, the configuration of a hinge 32 as a rotation support member and a fixing bolt 33 as a fixing member provided to attach the first housing case 31 to the revolving frame 5 will be described.
  Reference numeral 32 denotes a hinge as a rotation support member provided between the front end portion of the first housing case 31 and the turning frame 5. The hinges 32 are arranged with the left and right axis axes as the rotation center in substantially the same manner as the hinges 17 according to the first embodiment, and two hinges 32 are provided at intervals in the left and right directions, for example (one piece). Only shown). One attachment portion of the hinge 32 is attached to a lower portion of the front surface portion 31A forming the first housing case 31 by means such as welding. The other attachment portion of the hinge 32 is attached to the front beam 5G of the revolving frame 5 using the bolt 14. Thereby, the hinge 32 lifts the rear side of the first housing case 31 as shown in a two-dot chain line in FIG. 8 or FIG. The assembly with the case 35 can be rotated (turned down) forward.
  On the other hand, 33 is a fixing bolt as a fixing member provided between the rear portion of the first housing case 31 and the turning frame 5. When the rear side of the first housing case 31 is placed at an installation position (position indicated by a solid line in FIG. 8) disposed on the case support frame 5L of the revolving frame 5, the fixing bolt 33 is first The upper surface portion 31E of the storage case 31 is fixed to the case support frame 5L. On the other hand, when the fixing bolts 33 are loosened to release the fixing, as shown by a two-dot chain line in FIG. 8, the first storage case 31 is brought down together with the second storage case 35 from the installation position to the front side. Can do.
  Three fixing bolts 33 are provided corresponding to the three bolt insertion holes 31H provided in the upper surface portion 31E of the first housing case 31 (only one is shown). The three fixing bolts 33 are inserted into the bolt insertion holes 31H of the first housing case 31 and screwed into the case support frame 5L of the swivel frame 5 at the front end side thereof, whereby the upper surface of the first housing case 31 is inserted. The rear part of the part 31E is fixed on the case support frame 5L of the revolving frame 5. On the other hand, when each fixing bolt 33 is loosened, the rear side of the first housing case 31 can be lifted.
  Reference numeral 34 denotes a tank accommodation space defined in the first accommodation case 31. The reducing agent tank 22 is accommodated in the tank accommodating space 34.
  Reference numeral 35 denotes a second accommodation case according to the second embodiment provided on the upper rear side of the first accommodation case 31. The second housing case 35 is disposed on an extension line of the axis of the connection pin 4 </ b> C that is the insertion / removal direction of the connection pin 4 </ b> C of the work device 4. The second storage case 35 is a horizontally long opening whose lower side is opened by a front surface portion 35A, a rear surface portion 35B, a left side surface portion 35C, a right side surface portion 35D, an upper surface portion 35E, and a rectangular frame-shaped lower surface portion 35F. It is configured as a simple box-shaped container. The second storage case 35 is provided with an opening 35G that opens from the front surface portion 35A to the upper surface portion 35E, and a cover 35H that covers the opening 35G so as to be openable and closable.
  In the second housing case 35 configured in this way, the front and rear portions of the lower surface portion 35F are attached on the upper surface portion 31E of the first housing case 31 using a plurality of bolts 14. As a result, the second storage case 35 is positioned on the front side of the fuel tank 12 and fixedly mounted on the first storage case 31. An article storage space 36 is formed in the second storage case 35.
  Reference numeral 37 denotes a connecting pin 4C formed between the fuel tank 12 and the assembly on the revolving frame 5 when the assembly of the first storage case 31 and the second storage case 35 is rotated forward. It is a space for insertion and removal. In the state in which the insertion / removal space 37 is formed, the work device 4 can be detached by inserting / removing the connecting pin 4C.
  Thus, also in the second embodiment configured as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. That is, according to the second embodiment, the second housing case 35 can be provided by using the insertion / removal space 20 of the connecting pin 4C, and the tool box 24, the urea water bottle 25, and the like are efficiently housed. be able to. In addition, when the work device 4 is attached / detached, the assembly of the first storage case 31 and the second storage case 35 is rotated forward about the hinge 32, so that the connecting and disconnecting space for the connecting pin 4C can be obtained. 20 can be secured easily and workability can be improved.
  Furthermore, according to the second embodiment, by providing the hinge 32 at the front end of the first housing case 31, the first housing case 31 and the second housing case 35 are rotated together. be able to. Thereby, the reducing agent tank 22 can be exposed, and the reducing agent tank 22 can be easily inspected, repaired, cleaned, and the like.
  Next, FIG. 10 shows a third embodiment of the present invention. The feature of the present embodiment is that a second storage case is arranged on the rear side of the first storage case, and the assembly of the first storage case and the second storage case is rotated forward. It is in the structure which forms the insertion / extraction space of a connection pin by falling down. Note that in the third embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.
  In FIG. 10, reference numeral 41 denotes a first housing case according to the third embodiment. The first storage case 41 is located on the right side of the revolving frame 5 and is provided on the front side of the fuel tank 12, specifically, on the right front end of the revolving frame 5. The first housing case 41 includes a front surface portion 41A, a rear surface portion 41B, a left side surface portion 41C, a right side surface portion (not shown), and an upper surface portion 41D, and an opening 41E is provided across the front surface portion 41A and the upper surface portion 41D. The opening 41E is covered with a cover 41F so as to be opened and closed.
  Reference numeral 42 denotes a hinge as a rotation support member provided between the front end portion of the first housing case 41 and the turning frame 5. The hinges 42 are arranged with the left and right axis axes as the rotation centers in substantially the same manner as the hinges 17 according to the first embodiment. For example, two hinges 42 are provided at intervals in the left and right directions (one piece). Only shown). One attachment portion of the hinge 42 is attached to a lower portion of the front surface portion 41A forming the first housing case 41 by means such as welding. The other attachment portion of the hinge 42 is attached to the front beam 5G of the revolving frame 5 using the bolt 14. Thereby, as shown by a two-dot chain line in FIG. 10, the hinge 42 lifts the rear side of the first accommodation case 41, so that the first accommodation case 41 and a second accommodation case 45 to be described later can be formed. The assembly can be rotated forward (down).
  Reference numeral 43 denotes an article accommodation space defined in the first accommodation case 41. In the article storage space 43, articles such as the tool box 24 and the bottle 25 are stored on the pedestal 44.
  45 shows the 2nd accommodation case by 3rd Embodiment provided between the 1st accommodation case 41 and the fuel tank 12, and this 2nd accommodation case 45 is the insertion / removal direction of the connection pin 4C, and It arrange | positions on the extension line | wire of the axis line of the connecting pin 4C which becomes. The second storage case 45 is configured as a vertically long box-shaped container having a lower side opened by a front surface portion 45A, a rear surface portion 45B, a left side surface portion 45C, a right side surface portion (not shown), and an upper surface portion 45D. The second housing case 45 is provided with an opening 45E that opens from the front surface portion 45A to the upper surface portion 45D, and a cover 45F that covers the opening 45E so that the opening 45E can be opened and closed. The front surface 45A of the second housing case 45 is integrally attached to the rear surface portion 41B of the first housing case 41 by means such as welding or screwing. Thereby, the 1st storage case 41 and the 2nd storage case 45 comprise one assembly piled up in the front and back directions.
  46 denotes a rear part of the assembly of the first accommodation case 41 and the second accommodation case 45, that is, a plurality of fixing members provided between the rear part of the second accommodation case 45 and the swivel frame 5. It is a fixing bolt. When the rear side of the second housing case 45 is placed at an installation position (a position indicated by a solid line in FIG. 10) disposed on the case support frame 5L ′ of the revolving frame 5, the fixing bolt 46 is The rear surface portion 45B of the two storage cases 45 is fixed to the case support frame 5L ′. On the other hand, when the fixing bolts 46 are loosened to release the fixing, the second storage case 45 is brought down together with the first storage case 41 from the installation position to the front side as shown by a two-dot chain line in FIG. Can do. The fixing bolt 46 is inserted into the lower portion of the rear surface 45B of the second housing case 45, and the front end side of the fixing bolt 46 is screwed to the case support frame 5L 'of the revolving frame 5. The rear portion can be fixed on the case support frame 5L ′ of the revolving frame 5. On the other hand, when the fixing bolt 46 is loosened, the rear side of the assembly can be lifted.
  Reference numeral 47 denotes a tank accommodation space defined in the second accommodation case 45. The tank housing space 47 is formed with a large volume in the upward and downward directions by making the second housing case 45 a bottom-out structure. A reducing agent tank 49 described later is accommodated in the tank accommodating space 47.
  Reference numeral 48 denotes a connecting pin 4C formed between the fuel tank 12 and the assembly on the revolving frame 5 when the assembly of the first storage case 41 and the second storage case 45 is rotated forward. It is a space for insertion and removal. In the state where this insertion / removal space 48 is formed, the working device 4 can be detached by inserting / removing the connecting pin 4C.
  Reference numeral 49 denotes a reducing agent tank housed in the tank housing space 47 of the second housing case 45. The reducing agent tank 49 stores urea water to be supplied into the exhaust gas, and is formed as a vertically long sealed container. The reducing agent tank 49 is placed on the under cover 5J of the revolving frame 5, and is fixed using, for example, a belt, a bolt, or the like (none of which is shown). Furthermore, at the upper part of the reducing agent tank 49, a water supply port 49A for supplying urea water is provided obliquely upward.
  Thus, also in the third embodiment configured as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. That is, according to the third embodiment, the second housing case 45 can be provided using the insertion / removal space 48 of the connecting pin 4C, and the reducing agent tank 49 and the like can be efficiently housed. In addition, when the work device 4 is attached and detached, the assembly of the first housing case 41 and the second housing case 45 is rotated forward about the hinge 42, so that the space for inserting and removing the connecting pin 4C is obtained. 48 can be easily secured and workability can be improved. Furthermore, according to the third embodiment, since the first storage case 41 and the second storage case 45 can be rotated together, the reducing agent tank 49 can be exposed, and the reducing agent can be exposed. Inspection work, repair work, cleaning work, etc. of the tank 49 can be easily performed.
  Next, FIGS. 11 to 13 show a fourth embodiment of the present invention. The feature of this embodiment is that the second storage case is moved in the direction away from the oil storage tank by rotating the second storage case in the horizontal direction. Note that in the fourth embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.
  In FIG. 11, 51 shows the 1st accommodation case by 4th Embodiment. The first storage case 51 is located on the right side of the revolving frame 5 and is provided in front of the fuel tank 12. The first housing case 51 includes a front surface portion 51A, a rear surface portion 51B, a left side surface portion (not shown), a right side surface portion 51C, an upper surface portion 51D, and a lower surface portion 51E. An opening 51F is provided across the front surface 51A and the upper surface 51D, and the opening 51F is covered with a cover 51G so as to be opened and closed. The first storage case 51 is bolted to the revolving frame 5 in the same manner as the first storage case 13 according to the first embodiment.
  As shown in FIG. 12, a plurality of female screw holes 51 </ b> H are provided on the upper surface portion 51 </ b> D of the first housing case 51 so as to be located rearward from the front and rear intermediate portions. A total of four female screw holes 51H, for example, two on the front side and two on the rear side are provided. The two female screw holes 51H arranged on the front side are arranged at positions corresponding to the front corners of the lower surface part 52F of the second housing case 52 described later.
  Reference numeral 52 denotes a second accommodation case according to the fourth embodiment provided on the upper rear side of the first accommodation case 51. The second housing case 52 is disposed on an extension line of the axis of the connection pin 4C in which the upper portion thereof is in the insertion / removal direction of the connection pin 4C. The second storage case 52 is configured as a horizontally long box-shaped container by a front surface portion 52A, a rear surface portion 52B, a left side surface portion 52C, a right side surface portion 52D, an upper surface portion 52E, and a rectangular frame-shaped lower surface portion 52F. The second housing case 52 is provided with an opening 52G that opens from the front surface portion 52A to the upper surface portion 52E, and a cover 52H that covers the opening 52G so that the opening 52G can be opened and closed.
  The bottom surface portion 52F of the second housing case 52 is provided with a total of four bolt insertion holes 52J, two corners in the front left and right corner positions and the rear left and right middle positions. ing. These bolt insertion holes 52J correspond to the female screw holes 51H of the first housing case 51.
  Reference numeral 53 denotes four fixing bolts provided for attaching the second storage case 52 to the first storage case 51. The four fixing bolts 53 are inserted into the four bolt insertion holes 52J provided in the lower surface portion 52F of the second accommodation case 52, and are provided in the upper surface portion 51D of the first accommodation case 51. The second housing case 52 is fixed to the upper rear side of the first housing case 51 by being screwed into the female screw hole 51H.
  Here, of the four fixing bolts 53, the fixing bolt 53 that fixes the left front corner of the second housing case 52 can rotate the second housing case 52 forward and backward. It also serves as a rotation support member that supports the motor. Specifically, by removing the other fixing bolts 53 excluding the fixing bolt 53 that also serves as the rotation support member and loosening the fixing bolt 53 that also functions as the rotation support member, as shown in FIG. 52 can rotate forward and backward (counterclockwise) in the horizontal direction around the fixing bolt 53. Thereby, the second storage case 52 can be moved in a direction away from the fuel tank 12. Note that the fixing bolt 53 at the left front corner can be used as a rotation support member instead of the fixing bolt 53 at the left front corner. In this case, the second housing case 52 is used as a watch. Can rotate around.
  Of the four fixing bolts 53, the two fixing bolts 53 positioned on the rear side of the second housing case 52 constitute a fixing member. That is, when the two fixing bolts 53 are placed at the installation position (the position shown in FIG. 11) where the rear portion of the second storage case 52 is disposed at the rear portion of the first storage case 51, The lower surface portion 52F of the second storage case 52 is fixed to the upper surface portion 51D of the first storage case 51. On the other hand, when the fixing bolts 53 are loosened to release the fixing, the second housing case 53 can be rotated in the horizontal direction from the installation position to the front side as shown in FIG.
  Reference numeral 54 denotes an insertion / removal space for the connecting pin 4 </ b> C formed between the fuel tank 12 and the second storage case 52 on the first storage case 51 when the second storage case 52 is rotated forward. . In the state where this insertion / removal space 54 is formed, the working device 4 can be detached by inserting / removing the connecting pin 4C.
  Thus, also in the fourth embodiment configured as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. That is, according to the fourth embodiment, the second housing case 52 can be provided by using the insertion / removal space 54 of the connecting pin 4C, and the tool box 24, the urea water bottle 25, and the like are efficiently housed. be able to. Moreover, when the work device 4 is attached / detached, the connecting space 4 can be easily inserted and removed by rotating the second housing case 52 forward about the fixing bolt 53 at the left front corner. Therefore, workability can be improved.
  Furthermore, according to the fourth embodiment, the existing fixing bolt 53 provided for attaching the second housing case 52 to the first housing case 51 as a rotation support member is used. The insertion / removal space 54 of the connecting pin 4C can be formed without adding parts or changing the design.
  In the first embodiment, the fuel tank 12 that stores fuel is illustrated as an oil storage tank, and the first storage case 13, the second storage case 16, and the like are disposed on the front side of the fuel tank 12. And explained. However, the present invention is not limited to this, and the hydraulic oil tank 11 is provided on the front side of the fuel tank 12, and the first storage case 13, the second storage case 16 and the like are disposed on the front side of the hydraulic oil tank 11. Also good. This configuration can be similarly applied to other embodiments.
  In the third embodiment, the first storage case 41 and the second storage case 45 are arranged to overlap in the front and rear directions, and the reducing agent tank 49 is placed in the second storage case 45 located on the rear side. A case where the container is accommodated is described as an example. However, the present invention is not limited to this, and the reducing agent tank may be housed in the first housing case 41 located on the front side.
  Furthermore, in each embodiment, the crawler type hydraulic excavator 1 has been described as an example of the construction machine. However, the present invention is not limited to this, and may be applied to a wheel-type hydraulic excavator. Besides, it can be widely applied to other construction machines such as hydraulic cranes.
1 Excavator (construction machine)
2 Lower traveling body 3 Upper revolving body 4 Working device 4A Boom 4A1 Foot part 4C Connecting pin 5 Turning frame 5B Left vertical plate 5B1, 5C1 Mounting bracket 5C Right vertical plate 11 Hydraulic oil tank (oil storage tank)
12 Fuel tank (oil storage tank)
12A Front plate (front end)
13, 31, 41, 51 First housing case 13A, 16A, 31A, 35A, 41A, 45A, 51A, 52A Front part 13B, 16B, 31B, 35B, 41B, 45B, 51B, 52B Rear part 13C, 16C, 31C, 35C, 41C, 45C, 52C Left side portion 13D, 16D, 31D, 35D, 51C, 52D Right side portion 13E, 16E, 31E, 35E, 41D, 45D, 51D, 52E Upper surface portion 13F, 35F, 51E, 52F Lower surface portion 15, 34, 47 Tank accommodating space 16, 35, 45, 52 Second accommodating case 17, 32, 42 Hinge (rotating support member)
18 Latch (fixing member)
19, 36, 43 Article storage space 20, 37, 48, 54 Insertion / removal space 21 NOx purification device 22, 49 Reductant tank 24 Tool box (article)
25 Urea water bottle (article)
33,46 Fixing bolt (fixing member)
53 Fixing bolt (rotating support member) (fixing member)

Claims (10)

  1. A self-propelled lower traveling body, an upper revolving body mounted on the lower traveling body so as to be able to swivel, and a work device provided on the upper revolving body so as to be able to be raised and lowered,
    The upper swing body is located on the front side and has a swing frame provided with a mounting bracket for mounting the work device at an intermediate portion in the left and right directions, and a front end on the rear side of the mounting bracket of the swing frame. In a construction machine comprising an oil storage tank positioned and disposed outside the left and right directions of the swivel frame,
    Provided on the front side of the swivel frame is a first storage case that is located on the left and right sides of the mounting bracket and on the front side of the oil storage tank and stores articles therein.
    Provided on the upper rear side of the first storage case is a second storage case that is located on the outer left and right sides of the mounting bracket and stores articles therein.
    A rotation support member is provided between the front portion of the second storage case and the first storage case,
    Said second housing cases the construction machine, characterized in that where the structure is moved in a direction away from the oil storage tank by rotating the front around the the pivoting support member.
  2.   A self-propelled lower traveling body, an upper revolving body mounted on the lower traveling body so as to be able to swivel, and a work device provided on the upper revolving body so as to be able to be raised and lowered,
      The upper swing body is located on the front side and has a swing frame provided with a mounting bracket for mounting the work device at an intermediate portion in the left and right directions, and a front end on the rear side of the mounting bracket of the swing frame. In a construction machine comprising an oil storage tank positioned and disposed outside the left and right directions of the swivel frame,
      Provided on the front side of the swivel frame is a first storage case that is located on the left and right sides of the mounting bracket and on the front side of the oil storage tank and stores articles therein.
      On the upper rear side of the first storage case, a second storage case is provided that is located on the outside of the mounting bracket on the left and right sides and stores articles therein, and constitutes an assembly.
      A rotation support member is provided between the front portion of the first housing case and the turning frame,
      The assembly of the first storage case and the second storage case is configured to move in a direction away from the oil storage tank by rotating forward about the rotation support member. And construction machinery.
  3.   A self-propelled lower traveling body, an upper revolving body mounted on the lower traveling body so as to be able to swivel, and a work device provided on the upper revolving body so as to be able to be raised and lowered,
      The upper swing body is located on the front side and has a swing frame provided with a mounting bracket for mounting the work device at an intermediate portion in the left and right directions, and a front end on the rear side of the mounting bracket of the swing frame. In a construction machine comprising an oil storage tank positioned and disposed outside the left and right directions of the swivel frame,
      Provided on the front side of the swivel frame is a first storage case that is located on the left and right sides of the mounting bracket and on the front side of the oil storage tank and stores articles therein.
      Between the first storage case and the oil storage tank, there is provided a second storage case that is located on the left and right outside of the mounting bracket and stores articles therein, and the first storage case. The storage case and the second storage case constitute one assembly stacked in the front and rear directions,
      A rotation support member is provided between the front portion of the first housing case and the turning frame,
      The assembly of the first storage case and the second storage case is configured to move in a direction away from the oil storage tank by rotating forward about the rotation support member. And construction machinery.
  4. A mounting pin for connecting the work device to the mounting bracket is detachably provided on the mounting bracket of the swivel frame,
    4. The construction machine according to claim 1 , 2, or 3 , wherein the second housing case is configured to be disposed on an extension line of an axis of the connection pin in a direction in which the connection pin is inserted and removed.
  5. When the front Stories second housing case is placed on the mounting position, mounting the rear portion of the front Stories second housing case to the rear of the first housing case will be provided with a fixing member for removably fixing The construction machine according to claim 1 .
  6.   3. The construction according to claim 2, wherein when the first storage case is placed at the installation position, a fixing member is provided to attach a rear portion of the first storage case to the swivel frame and to be detachably fixed. machine.
  7.   The construction according to claim 3, wherein when the second storage case is placed at an installation position, a fixing member is provided to attach the rear portion of the second storage case to the swivel frame and detachably fix it. machine.
  8. Of the first storage case and the second storage case, the storage case attached to the swivel frame is provided with a reducing agent tank for storing a liquid reducing agent,
    The construction machine according to claim 1, 2 or 3, wherein the reducing agent tank is configured to be placed on the revolving frame.
  9. Wherein said rotatable support member is a second left positioned at the front end portion of the housing case, the second hinge of the housing case that rotatably supported Soo in the right direction of the axis as the pivot center Item 2. The construction machine according to Item 1 .
  10.   4. The hinge according to claim 2, wherein the rotation support member is a hinge that is positioned at a front end portion of the first housing case and rotatably supports the assembly with the left and right axes as rotation centers. The construction machine described.
JP2012191794A 2012-08-31 2012-08-31 Construction machinery Active JP5859933B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012191794A JP5859933B2 (en) 2012-08-31 2012-08-31 Construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012191794A JP5859933B2 (en) 2012-08-31 2012-08-31 Construction machinery

Publications (2)

Publication Number Publication Date
JP2014047551A JP2014047551A (en) 2014-03-17
JP5859933B2 true JP5859933B2 (en) 2016-02-16

Family

ID=50607515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012191794A Active JP5859933B2 (en) 2012-08-31 2012-08-31 Construction machinery

Country Status (1)

Country Link
JP (1) JP5859933B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6297905B2 (en) * 2014-04-22 2018-03-20 日立建機株式会社 Construction machinery
CN104363984B (en) 2014-08-08 2016-08-31 株式会社小松制作所 Hydraulic crawler excavator
WO2016030936A1 (en) 2014-08-25 2016-03-03 株式会社小松製作所 Bulldozer
JP6409523B2 (en) * 2014-11-17 2018-10-24 コベルコ建機株式会社 Construction machinery
CN104500461B (en) * 2014-12-16 2016-08-17 江苏柳工机械有限公司 Hydraulic-oil of loader-digger case
JP6541972B2 (en) * 2014-12-26 2019-07-10 住友建機株式会社 Shovel
JP6005192B2 (en) * 2015-02-18 2016-10-12 株式会社小松製作所 Bulldozer
JP6495082B2 (en) 2015-04-17 2019-04-03 日立建機株式会社 Construction machinery
JP6392707B2 (en) * 2015-06-01 2018-09-19 日立建機株式会社 Work machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008240676A (en) * 2007-03-28 2008-10-09 Komatsu Ltd Construction vehicle
JP4937291B2 (en) * 2009-03-30 2012-05-23 住友建機株式会社 Construction machinery
JP2011058247A (en) * 2009-09-09 2011-03-24 Caterpillar Sarl Component mounting mechanism and urea tank mounting mechanism of construction machine
JP5402451B2 (en) * 2009-09-17 2014-01-29 コベルコ建機株式会社 Construction machinery
JP2011247232A (en) * 2010-05-31 2011-12-08 Caterpillar Sarl Working machine
JP5562777B2 (en) * 2010-09-16 2014-07-30 日立建機株式会社 Construction machinery

Also Published As

Publication number Publication date
JP2014047551A (en) 2014-03-17

Similar Documents

Publication Publication Date Title
JP5859933B2 (en) Construction machinery
JP5990257B2 (en) Construction machinery
JP5615763B2 (en) Construction machinery
JP5562777B2 (en) Construction machinery
KR20090094257A (en) Construction machine
KR101446646B1 (en) Construction machine
JP4953191B2 (en) Construction machinery
WO2003002364A1 (en) Cover structure for construction machine cooling package
JP2015134999A (en) Construction machine
US10975549B2 (en) Construction machine
JP2003268802A (en) Slewing type working machine
JP2004190276A (en) Handrail in construction machine
JP4920022B2 (en) Swivel construction machine
EP3284868B1 (en) Construction machine
JP2013057179A (en) Construction machine
JP6707051B2 (en) Construction machinery
JP6765784B2 (en) Excavator
JP2012207552A (en) Construction machine
JP6339948B2 (en) Excavator
JP4323282B2 (en) Electric work machine
JP2019132106A (en) Work machine
JP2019203333A (en) Construction machine
JP6091993B2 (en) Excavator
JPH11100861A (en) Battery fitting structure for construction machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140804

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150427

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150512

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150703

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20151215

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20151217

R150 Certificate of patent (=grant) or registration of utility model

Ref document number: 5859933

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150