JP5259479B2 - Construction machinery - Google Patents

Description

  The present invention relates to construction such as a hydraulic excavator, and more particularly to a construction machine including an engine and a fuel tank.

  In general, a hydraulic excavator as a construction machine includes a small hydraulic excavator called a mini excavator. The small hydraulic excavator includes a lower traveling body capable of self-propelling, an upper revolving body that is turnably mounted on the lower traveling body, and a working device that is provided so as to be able to move up and down on the front side of the upper revolving body. It is comprised by.

  The upper swing body includes a swing frame provided with a working device on the front side, an engine mounted on the rear side of the swing frame and driving a hydraulic pump, a floor provided on the swing frame, A driver's seat provided on the upper side and seated by an operator, a fuel tank for storing fuel supplied to the engine, and a hydraulic oil tank for storing hydraulic oil are roughly configured.

  Here, in the small hydraulic excavator, since the upper swing body is also formed in a small size, it is difficult to secure an installation space for a mounted device such as an engine. For this purpose, the rear side of the floor is extended to the upper side of the engine, and a driver's seat is arranged on the floor so as to be positioned above the engine. In addition, using the space below the footrest located on the front side of the floor, mounted devices such as control valves are disposed on the turning frame. (For example, refer to Patent Document 1 and Patent Document 2).

JP 2007-217922 A JP-A-2005-48380

  By the way, in the hydraulic excavator by patent document 1 mentioned above, since the driver's seat is arrange | positioned on the floor extended to the upper side of the engine, the heat | fever and noise which an engine generate | occur | produce will be transmitted to an operator. In addition, heat and noise generated by the control valve are transmitted to the operator's feet. As described above, there is a problem that the working environment is deteriorated by heat and noise generated by the engine and the control valve.

  The hydraulic oil tank needs to be large enough to store a specified amount of hydraulic oil. For this reason, a small hydraulic excavator with a limited installation space for equipment can be accommodated by reducing the capacity of the fuel tank. As a result, the small hydraulic excavator has a problem in that the time during which it can be operated with one refueling is shortened, and the working efficiency is reduced.

  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 suppress the heat and noise generated by the engine and the like from being transmitted to the operator, improve the working environment, and use a large amount of fuel. It is an object of the present invention to provide a construction machine that can be stored and extend the operation time.

  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 working device that is provided on the front side of the upper revolving body so as to be able to move up and down. The upper swing body includes a swing frame forming a support structure, a mounted device including an engine mounted on the swing frame, and an operator seated on the swing frame so as to cover the mounted device. And a floor having a driver's seat.

Then, in order to solve the above problems, characteristic of the structure of the invention of claim 1 is employed, the flow A is provided with an outer frame member made of a metal material, a resin which is supported on the outer frame material The internal space formed in the storage container is used as a fuel storage unit for storing fuel supplied to the engine.

The invention of claim 2, wherein the storage container includes a foot reservoir extending horizontally located on the front side, and an intermediate vertical reservoir extending toward the upper side from the rear of the foot reservoir, the intermediate vertical storage an intermediate horizontal reservoir portion extending toward the rear from the part, constituted by a rear reservoir portion extending toward the rear from the rear of the middle lateral reservoirs, the fuel storage portion, the foot reservoir and the intermediate It exists in having formed over all of the vertical storage part, the intermediate | middle horizontal storage part, and the back surface storage part .

According to a third aspect of the present invention, there is provided a self-propelled lower traveling body, an upper revolving body that is pivotably mounted on the lower traveling body, and a working device that is provided on the front side of the upper revolving body so as to be able to move up and down. The upper swing body includes a swing frame that forms a support structure, a mounted device that includes an engine mounted on the swing frame, and is provided on the swing frame so as to cover the mounted device. A floor formed by a footrest portion on which a vehicle is mounted and a partition portion having a driver seat mounting portion on which a driver seat on which an operator sits rising from the rear portion of the footrest portion is mounted. An outer frame body formed of a metal material and a storage container made of a resin material provided in the partition part separately from the outer frame body, and an internal space formed in the storage container is formed in the engine In that the fuel storage section to store fuel to be supplied.

According to a fourth aspect of the present invention, the storage container provided in the partition part of the floor includes a vertical storage part, a horizontal storage part, and a back storage part, and the fuel storage part includes the vertical storage part and the horizontal storage part. The configuration is such that it is provided in at least one of the part and the back surface storage part .

According to a fifth aspect of the present invention, there is provided a self-propelled lower traveling body, an upper revolving body mounted on the lower traveling body so as to be capable of swiveling, and a working device provided on the front side of the upper revolving body so as to be able to move up and down. The upper swing body includes a swing frame that forms a support structure, a mounted device that includes an engine mounted on the swing frame, and is provided on the swing frame so as to cover the mounted device. A floor formed by a footrest portion on which a vehicle is mounted and a partition portion having a driver seat mounting portion on which a driver seat on which an operator sits rising from the rear portion of the footrest portion is mounted . an outer frame member made of a metal material, is formed by a storage container made of a resin material provided separately the footrest section and outer frame body, an inner space formed in the reservoir, the engine Ru near it has a fuel storage portion for storing fuel to be supplied.

The invention according to claim 6 is a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a working device that is provided on the front side of the upper revolving body so as to be able to move up and down. The upper swing body includes a swing frame forming a support structure, a mounted device including an engine mounted on the swing frame, and an operator seated on the swing frame so as to cover the mounted device. fuel in a construction machine comprising a floor having a driver's seat, the floor is formed as a casting using a metal material, an inner space formed in the casting, which store the fuel supplied to the engine Ru near it has a reservoir.

  According to invention of Claim 1, when the fuel storage part is provided in the floor, the position of this fuel storage part becomes a double structure. Further, the fuel storage unit can store fuel that is a liquid that hardly absorbs heat and absorbs vibrations. Thereby, for example, the double structure portion of the floor and the fuel can be arranged as a partition wall between the driver's seat and a mounted device such as an engine or a control valve that generates heat or noise. As a result, heat and noise generated by the engine and the control valve can be blocked by the fuel storage section on the floor, and the operator's working environment can be improved.

Moreover, since the floor provided with the fuel storage section has a large area, the amount of fuel stored can be increased as compared with the case where the fuel tank is provided independently. Thereby, the operation time of a construction machine can be extended and work efficiency can be improved. Furthermore, the storage container made of a resin material can have a complicated shape and can be manufactured at low cost. And the outer frame body which consists of metal materials can support a storage container firmly.

According to the invention of claim 2, since the fuel storage part is formed including the foot storage part , for example, the fuel storage part is provided between the control valve disposed under the floor and the foot of the operator seated on the driver's seat. Can be arranged. As a result, the operator's feet can be protected from heat and noise generated by the control valve.

In addition , since the fuel storage part is formed including an intermediate vertical storage part, an intermediate horizontal storage part, and a rear storage part , for example, between the engine disposed under the driver's seat and the operator seated in the driver's seat. A fuel reservoir can be arranged. As a result, the operator can be protected from heat and noise generated by the engine.

According to the invention of claim 3 , since the driver seat mounting portion is provided in the partition part of the floor, the driver seat can be mounted on the driver seat mounting portion. In this case, since the internal space of the storage container provided in the partition portion is used as the fuel storage portion, for example, the fuel storage portion is disposed between the engine disposed under the driver seat and the operator seated in the driver seat. can do. As a result, the operator can be protected from heat and noise generated by the engine. Moreover, the storage container made of a resin material can have a complicated shape and can be manufactured at low cost. And the outer frame body which consists of metal materials can support a storage container firmly .

According to invention of Claim 4, the fuel storage part provided in at least any one of the vertical storage part, the horizontal storage part, and the back surface storage part is a direct transmission of heat and noise to the operator seated in the driver's seat. Can be prevented.

According to the fifth aspect of the present invention, since the driver seat mounting portion is provided in the partition of the floor, the driver seat can be mounted on the driver seat mounting portion. In this case, since the internal space of the storage container provided in the footrest portion is used as the fuel storage portion, for example, the fuel storage is performed between the control valve disposed under the floor and the feet of the operator seated on the driver's seat. Parts can be arranged . As a result, the operator's feet can be protected from heat and noise generated by the control valve . Moreover, the storage container made of a resin material can have a complicated shape and can be manufactured at low cost. And the outer frame body which consists of metal materials can support a storage container firmly.

  According to the invention of claim 6, by forming the floor as a cast product using a metal material, the floor and the fuel tank can be formed as an integrated structure, reducing the number of parts and improving the assembly workability. Etc. can be achieved.

1 is a front view showing a cab specification hydraulic excavator according to a first embodiment of the present invention. It is an external appearance perspective view which expands and shows the upper revolving body in FIG. It is a rear view which expands and shows a lower traveling body and an upper turning body in the state which omitted the heat exchanger, the hydraulic oil tank, the exterior cover, etc. It is an external appearance perspective view which expands and shows a turning frame. It is a top view which expands and shows an upper revolving body in the state where an exterior cover, a cab, various levers, etc. were omitted. It is an external appearance perspective view which shows a turning frame, a floor, a driver's seat, an air conditioning unit, a tilting mechanism, etc. It is an external appearance perspective view which expands and shows the floor in FIG. 6, a driver's seat, and an air-conditioning unit. It is an external appearance perspective view which shows the floor in FIG. It is an external appearance perspective view which shows the outer frame body in FIG. 8 alone. It is an external appearance perspective view which shows the storage container in FIG. 8 alone. It is a front view which shows the storage container of a floor alone. It is sectional drawing of the storage container seen from the arrow XII-XII direction in FIG. It is sectional drawing of the storage container seen from the arrow XIII-XIII direction in FIG. It is an external appearance perspective view which shows the floor by the 2nd Embodiment of this invention with a turning frame, a driver's seat, an air-conditioning unit, a tilting mechanism, etc. It is an external appearance perspective view which shows a floor alone. It is sectional drawing of the storage container seen from the arrow XVI-XVI direction in FIG. It is sectional drawing of the storage container seen from the arrow XVII-XVII direction in FIG. It is an external appearance perspective view which shows the floor by the 3rd Embodiment of this invention. It is an external appearance perspective view which shows the storage container in FIG. It is an external appearance perspective view which shows the floor by the 4th Embodiment of this invention. It is an external appearance perspective view which shows the storage container in FIG. 20 alone. It is an external appearance perspective view which shows the storage container and fuel storage part by the 1st modification of this invention. It is an external appearance perspective view which shows the storage container and fuel storage part by the 2nd modification of this invention.

  Hereinafter, a small hydraulic excavator will be described as a representative example of a construction machine according to an embodiment of the present invention, and will be described in detail with reference to the accompanying drawings.

  First, FIG. 1 thru | or FIG. 13 has shown the 1st Embodiment of this invention. In FIG. 1, reference numeral 1 denotes a cab specification hydraulic excavator as a construction machine. The hydraulic excavator 1 is a self-propelled crawler type lower traveling body 2 and an upper portion mounted on the lower traveling body 2 so as to be able to turn. It is comprised with the turning body 3. FIG. In addition, a swing type work device 4 for performing excavation work of earth and sand is provided on the front side of the upper swing body 3 so as to be able to swing and lift.

  On the other hand, as shown in FIGS. 1 to 5, the upper swing body 3 is roughly constituted by a swing frame 5, an engine 6, a hydraulic oil tank 9, a control valve 11, a floor 15, a driver seat 26, a cab 32 and the like which will be described later. Yes. Further, the upper swing body 3 can be tilted upward (tilt up) with the floor 15 together with the driver's seat 26 and the cab 32 as a fulcrum, and tilted downward (tilt down). )can do.

  Reference numeral 5 denotes a revolving frame constituting a support structure for the upper revolving structure 3. As shown in FIG. 6, the swivel frame 5 has a flat bottom plate 5A extending in the front and rear directions in the middle in the left and right directions, and spaced substantially in the left and right directions on the upper surface side of the bottom plate 5A. Left and right vertical plates 5B and 5C erected in a V-shape, a support bracket 5D provided at the front end of each of the vertical plates 5B and 5C, and a base of the support bracket 5D A left side frame 5E that is bent while extending to the left side from the end portion and extended to the rear side, a right side frame 5F that is bent and extends to the rear side while extending to the right side from the base end portion of the support bracket 5D, and a front portion The left side frame 5 </ b> E is positioned leftward and extends in the left and right directions above the left side frame 5 </ b> E.

  Reference numeral 6 denotes an engine (see FIGS. 3 and 5) mounted on the rear side of the turning frame 5. The engine 6 is one of the mounted devices, and is arranged in a horizontally placed state extending in the left and right directions. ing. Here, the engine 6 is disposed so as to enter the lower side of a partition portion 15B of the floor 15 described later. A hydraulic pump 7 driven by the engine 6 is provided on the left side of the engine 6, and a heat exchanger 8 such as a radiator and an oil cooler is provided on the right side of the engine 6.

  A hydraulic oil tank 9 is provided on the right side of the revolving frame 5 and is located on the front side of the heat exchanger 8, and the hydraulic oil tank 9 stores hydraulic oil for driving various actuators. Reference numeral 10 denotes a battery provided on the front side of the hydraulic oil tank 9.

  Reference numeral 11 denotes a control valve as a mounted device provided on the left front side of the turning frame 5 (only a part is shown in FIG. 6). The control valve 11 is disposed below the footrest portion 15A of the floor 15 described later. Further, in the central portion of the swing frame 5, a swing motor that is positioned below the footrest portion 15A and that drives the upper swing body 3 to rotate, and a center that supplies pressure oil to the lower traveling body 2 side while allowing the swing operation. A joint (both not shown) and the like are provided.

  A support frame 12 is provided on the right side of the engine 6, and the support frame 12 is formed in an inverted L shape extending upward from the front side of the engine 6, with a lower end portion on the revolving frame 5 and a rear end portion. Is attached to the counterweight 13. Further, as shown in FIG. 3 and the like, a tilting mechanism 34 described later is attached to the support frame 12.

  Reference numeral 13 denotes a counterweight which is located on the rear side of the engine 6 and is attached to the rear end portion of the turning frame 5. This counterweight 13 balances the weight with the working device 4 and has a convex curved shape extending in an arc shape in the left and right directions as shown in FIG. Further, as shown in FIG. 3, the counterweight 13 is an attachment base for attaching a building attachment portion 15 </ b> C (the rear frame portion 20 of the outer frame body 16) of the floor 15 described later.

  Reference numeral 14 denotes an exterior cover provided around a cab 32, which will be described later. The exterior cover 14 includes a left side cover 14A extending forward from the left end side of the counterweight 13 and a counter as shown in FIGS. A right side cover 14B extending forward from the right end side of the weight 13, an engine cover 14C provided on the rear side so as to be opened and closed between the side cover 14A and 14B, and a right side of the cab 32 A tank cover 14D that can be opened and closed covering the hydraulic oil tank 9 and the like is generally configured.

  Next, the floor 15 that is a characteristic part of the first embodiment provided on the revolving frame 5 will be described. The floor 15 is configured, for example, as a tilt floor attached so that the front side position can be tilted with respect to the revolving frame 5. In addition, the floor 15 is configured as a container combined floor including a storage container 22 having a fuel storage unit 23 for storing fuel 24 supplied to the engine 6.

  That is, 15 is a floor provided on the left side of the turning frame 5. The floor 15 is supported by a front beam 5G whose front position is a front position of the revolving frame 5 via a floor support mechanism 33 described later, and the rear position is a vibration-proof mount (not shown) on the counterweight 13. It is removably attached via Moreover, the floor 15 is comprised by the below-mentioned outer frame 16 and the storage container 22 (fuel storage part 23) as shown in FIG.4, FIG.5, FIG.7, FIG.

  Here, the floor 15 is located on the front side, and a footrest portion 15A that serves as a footrest for an operator seated in a driver seat 26, which will be described later, rises from the rear portion of the footrest portion 15A and covers the upper side from the front side of the engine 6. The partition portion 15B and a building attachment portion 15C provided to extend rearward from the upper end portion of the partition portion 15B. Further, the partition portion 15B of the floor 15 is roughly constituted by a rising portion 15B1 extending upward from the rear side of the footrest portion 15A and a driver seat mounting portion 15B2 extending rearward from the upper side of the rising portion 15B1. Yes.

  Further, the footrest portion 15 </ b> A and the partition portion 15 </ b> B of the floor 15 are formed by the fuel storage portion 23. Further, the footrest portion 15A is provided with a travel operation lever / pedal 29, an air conditioning unit 30, and the like, and a driver seat 26 and the like are attached to the driver seat attachment portion 15B2 of the partition portion 15B. Moreover, the sheet-like heat insulating material (not shown) is affixed on the surface facing the engine 6 of the partition part 15B.

  Further, the footrest portion 15 </ b> A of the floor 15 is disposed at a position that blocks between the control valve 11 mounted on the left front side of the turning frame 5 and the feet of the operator seated on the driver's seat 26. Further, the rising portion 15B1 of the partition portion 15B is disposed at a position that blocks between the engine 6 mounted on the rear side of the turning frame 5 and the operator's feet. Further, the driver seat mounting portion 15B2 of the partition portion 15B is disposed at a position that blocks between the engine 6 and the trunk portion of the operator.

  Reference numeral 16 denotes an outer frame body that forms a support structure of the floor 15, and the outer frame body 16 supports a resin storage container 22 and is formed as a strength member made of a metal material. Further, as shown in FIGS. 8 and 9, the outer frame body 16 is positioned on the front side and supports the foot storage part 22 </ b> A of the storage container 22, and from the rear part of the front frame part 17 to the upper side. A vertical frame portion 18 that supports the intermediate vertical storage portion 22B of the extended storage container 22; an intermediate horizontal storage portion 22C and a rear storage portion 22D that extend obliquely upward from the upper portion of the vertical frame portion 18 toward the rear side; Is substantially constituted by an intermediate frame portion 19 that supports the rear frame portion 20, a rear frame portion 20 that extends from the upper portion of the intermediate frame portion 19 to the rear side, and a side surface portion 21 that rises from the right position of the front frame portion 17. Yes.

  Here, the front frame portion 17 is located on the right side so as to sandwich the foot storage portion 22A of the storage container 22 between the left side plate 17A located on the left side and extending in the front and rear directions and the left side plate 17A. A right side plate 17B extending in the front and rear directions, and a lever / pedal mounting portion 17C for extending the left and right sides provided on the front side of the side plates 17A and 17B for mounting a travel operation lever / pedal 29 and the like to be described later. And a front bracket 17D provided on the front side of the lever / pedal mounting portion 17C.

  Further, the front frame portion 17 is provided with two support plates 17E positioned between the left and right side plates 17A and 17B with a distance in the front and rear directions. Each support plate 17E has both ends on the upper side. The both ends are fixed to the left and right side plates 17A and 17B. Thereby, the front frame part 17 can support the foot storage part 22A of the storage container 22 from the lower side by each support plate 17E. The front frame portion 17 is attached to the front beam 5G of the revolving frame 5 so as to be tiltable by a floor support mechanism 33 attached to the front bracket 17D.

  Further, the vertical frame portion 18 is located on the left side and extends to the upper side from the rear portion of the left side plate 17A of the front frame portion 17, and the right column that is positioned on the right side and extends from the rear portion of the right side plate 17B to the upper side. 18B and a support plate 18C which is located in the middle of the upper and lower directions and extends in the left and right directions and has both end portions fixed to the left side plate 18A and the right column 18B. And the vertical frame part 18 can support the intermediate | middle vertical storage part 22B of the storage container 22 from the back side by the support plate 18C.

  Further, the intermediate frame portion 19 is located on the left side and curved leftwardly from the left side plate 18A of the vertical frame portion 18 and extends obliquely upward, and on the right side and on the right column 18B. A right frame plate 19B extending obliquely upward from the rear side to the rear side, a front support plate 19C located on the front side and extending in the left and right directions and having both ends fixed to the left frame plate 19A and the right frame plate 19B; The rear support plate 19D, which is positioned on the rear side and extends in the left and right directions, has both ends fixed to the left frame plate 19A and the right frame plate 19B. The vertical frame portion 18 can support the intermediate horizontal storage portion 22C of the storage container 22 from the lower side by the front support plate 19C, and the rear storage plate 22D of the storage container 22 from the oblique rear side by the rear support plate 19D. Can be supported.

  The rear frame portion 20 extends in the left and right directions so as to connect the upper portion of the left frame plate 19A of the intermediate frame portion 19 and the upper portion of the right frame plate 19B. The rear frame portion 20 is detachably attached to the upper surface portion of the counterweight 13 via an anti-vibration mount (not shown), and is formed in an arc shape so that the rear edge portion is along the counterweight 13. Has been.

  Further, the side surface portion 21 extends upward from the right side plate 17B of the front frame portion 17 along the right column 18B of the vertical frame portion 18, and a moving member 34E of the tilt mechanism 34 to be described later is attached to the upper side position. A mounting portion 21A is provided.

  22 is a storage container made of a resin material provided separately from the outer frame body 16, and the storage container 22 constitutes the floor 15 together with the outer frame body 16. Here, the storage container 22 (fuel storage part 23) is provided over both the footrest part 15A and the partition part 15B of the floor 15, as shown in FIG.

  Further, as shown in FIGS. 10 to 13, the storage container 22 includes a foot storage portion 22A that is positioned on the front side and extends in the horizontal direction, and an intermediate portion that extends vertically from the rear portion of the foot storage portion 22A toward the upper side. A vertical storage portion 22B, an intermediate horizontal storage portion 22C extending horizontally from the intermediate vertical storage portion 22B toward the rear side, and a back storage portion extending obliquely upward from the rear portion of the intermediate horizontal storage portion 22C toward the rear side 22D. In addition, the rear storage portion 22D at the highest position is provided with a fuel filler port 22E at the upper left position where it is easy to reach.

  Further, the foot storage portion 22A of the storage container 22 forming the footrest portion 15A of the floor 15 is provided with a position different from the internal fuel storage portion 23, specifically, the right portion from the intermediate portion of the footrest portion 15A. An article accommodating portion 22F that accommodates an article by being recessed is provided to open upward. In this case, in 1st Embodiment, it is set as the structure which accommodates the below-mentioned air conditioning unit 30 as an article | item in the article | item accommodating part 22F.

  Further, the intermediate horizontal storage portion 22C of the storage container 22 constitutes a driver seat mounting portion 15B2 of the partition plate 15B of the floor 15. The intermediate lateral storage portion 22C is provided with a plurality of screw holes 22G with predetermined intervals for attaching a seat rail 27 that supports a driver's seat 26, which will be described later, so as to be movable forward and backward.

  Reference numeral 23 denotes a fuel storage portion formed as an internal space of the storage container 22 constituting the floor 15. As shown in FIGS. 12 and 13, the fuel storage unit 23 stores fuel 24 supplied to the engine 6. Further, the fuel storage unit 23 is formed over all of the foot storage unit 22A, the intermediate vertical storage unit 22B, the intermediate horizontal storage unit 22C, and the back storage unit 22D constituting the storage container 22.

  Here, the fuel storage unit 23 is provided in a storage container 22 that is mostly thin. However, since the fuel storage unit 23 is formed over a wide range of the storage container 22, more fuel 24 can be stored than a general fuel tank. The fuel storage unit 23 serves as a partition wall between the equipment mounted on the revolving frame 5, for example, the engine 6, the control valve 11, and an operator seated on the driver's seat 26, and is a liquid that hardly absorbs heat and absorbs vibration. Since one fuel 24 is accommodated, transmission of heat and noise (vibration) generated by the engine 6 and the control valve 11 can be suppressed.

  Reference numeral 25 denotes a front attachment portion of the driver's seat 26 provided so as to cover the front side of the intermediate vertical storage portion 22B of the storage container 22. The front attachment portion 25 is detachably attached to, for example, the vertical frame portion 18 of the outer frame body 16 or the like. Thereby, when the front side attachment part 25 is removed, the attachment / detachment work, the maintenance work, etc. of the air conditioning unit 30 with respect to the article accommodating part 22F of the storage container 22 can be performed.

  Reference numeral 26 denotes a driver seat provided on the floor 15 (see FIG. 6 and the like). The driver seat 26 is disposed on the intermediate lateral storage portion 22C and the front side attachment portion 25 of the storage container 22 serving as the driver seat attachment portion 15B2 of the floor 15. Is provided. The driver's seat 26 is seated by an operator, and is bolted via left and right seat rails 27 using each screw hole 22G provided in the intermediate lateral storage portion 22C.

  Also, on both the left and right sides of the driver's seat 26, as shown in FIG. 2, work operation levers 28 for operating the work device 4 and the like are disposed. Further, the lever / pedal mounting portion 17C of the front frame portion 17 in front of the driver's seat 26 is provided with a travel operation lever / pedal 29 that is operated manually or by stepping when the lower traveling body 2 is traveled. Yes.

  Reference numeral 30 denotes an air conditioning unit housed in the article housing portion 22F of the storage container 22 (see FIGS. 5 to 7). The air conditioning unit 30 is composed of a compressor and a condenser (both of which are outdoor units attached to the engine 6). The air conditioner is configured together with a not-shown). The air conditioning unit 30 adjusts the sucked air to cool air or warm air, and supplies the conditioned air into the cab 32 via an air conditioning duct 31 described later.

  31 is an air conditioning duct located on the right front side of the floor 15 and connected to the air outlet side of the air conditioning unit 30 (see FIG. 2). The air conditioning duct 31 blows out conditioned air supplied from the air conditioning unit 30 toward a predetermined position in the cab 32.

  Reference numeral 32 denotes a cab as a building provided on the floor 15 so as to cover the periphery of the driver's seat 26. The cab 32 forms an operator's living space by covering the upper side and the periphery of the driver's seat 26. The cab 32 includes a front surface portion 32A, a rear surface portion 32B, a left side surface portion 32C, a right side surface portion 32D, and a top surface portion 32E, and a door 32F for entering and exiting is attached to the left side surface portion 32C so as to be opened and closed. The cab 32 is bolted around the outer frame 16 constituting the floor 15.

  Reference numeral 33 denotes a floor support mechanism provided between the front beam 5G of the revolving frame 5 and the front bracket 17D of the front frame portion 17 of the outer frame body 16 so as to be separated left and right (see FIG. 6 and the like). The left and right floor support mechanisms 33 are attached so that the axis extending in the left and right directions at the front side position of the floor 15 is a rotation axis, and the front side of the floor 15 is rotatably (tilted) to the revolving frame 5. is there. Thereby, as shown in FIG. 3, the floor 15 is moved in the direction indicated by arrow A (tilt up) from the front side or the upper side (tilt up) and from the rear side or lower side by the tilt mechanism 34 (described later). Tilt is possible.

  Reference numeral 34 denotes a tilting mechanism that is located behind the floor support mechanism 33 and is provided between the revolving frame 5 and the floor 15 (see FIG. 3). The tilting mechanism 34 is positioned at the right side of the floor 15. It is provided extending in the front and rear directions.

  In addition, the tilting mechanism 34 has a mounting bracket 34A attached to the support frame 12 located on the revolving frame 5 side, a base end side attached to the mounting bracket 34A so as to be rotatable upward and downward, and a distal end side is free. A guide rail 34B extending to the front as an end, a screw shaft 34C extending along the guide rail 34B and rotatably attached to the guide rail 34B in an axially positioned state, and the screw shaft 34C The tool connecting portion 34D provided at the tip of the tool is connected to a tool such as an impact wrench, and the screw shaft 34C is screwed into the screw shaft 34C and rotated through the tool connecting portion 34D. A moving member 34E that moves forward and rearward along the guide rail 34B is generally configured. Moreover, the moving member 34 </ b> E serving as a moving fulcrum for tilting the floor 15 is rotatably attached to the side plate 21 of the outer frame body 16 constituting the floor 15.

  The tilt mechanism 34 connects a tool such as an impact wrench to the tool connecting portion 34D, and rotationally drives the screw shaft 34C in an arbitrary direction from the outside. As a result, the moving member 34E screwed to the screw shaft 34C can be displaced along the guide rail 34B to the front end side (in the direction of arrow C), and the floor 15 can be moved forward according to the amount of displacement of the moving member 34E. Or it can be tilted upward (in the direction of arrow A). On the other hand, by rotating and driving the screw shaft 34C in the reverse direction, the moving member 34E can be displaced along the guide rail 34B to the base end side (in the direction of arrow D), and the floor 15 can be rearward or lower ( Can be tilted in the direction indicated by arrow B).

  The hydraulic excavator 1 according to the first embodiment has the above-described configuration. Next, the operation thereof will be described.

  First, an operator who has entered the cab 32 sits on the driver's seat 26 and operates the traveling operation lever / pedal 29 in this state, thereby allowing the lower traveling body 2 to travel. Further, by operating the work operation lever 28, the work device 4 can be moved up and down to perform excavation work of earth and sand.

  Here, when the hydraulic excavator 1 is traveling and working, the engine 6 provided on the rear side of the swing frame 5 is in an operating state, and the engine 6 generates heat and generates noise (vibration). Similarly, the control valve 11 mounted on the swivel frame 6 located below the floor 15 also generates heat due to a rise in the temperature of the hydraulic oil and generates an operating sound.

  In this case, the floor 15 is composed of the outer frame 16 and the storage container 22, and the storage container 22 having the fuel storage part 23 inside is doubled by providing the fuel storage part 23 in the storage container 22. It can be formed into a structure (container structure). Further, the fuel storage unit 23 stores a fuel 24 that is a liquid that hardly absorbs heat and absorbs vibrations. Therefore, between the engine 6 that generates heat and noise, the control valve 11, and the like and the driver's seat 26, the double structure portion by the storage container 22 and the fuel 24 can be arranged as a partition wall. Thus, heat and noise generated by the engine 6 and the control valve 11 can be blocked by the storage container 22 and the fuel storage unit 23 on the floor 15.

  Further, since the storage container 22 whose inside is the fuel storage unit 23 is provided in a wide range of the floor 15, the amount of fuel stored in the fuel storage unit 23 can be increased, and the hydraulic excavator 1 can be refueled. It is possible to operate for a long time without doing.

  Next, a case where maintenance work is performed on the engine 6 and the control valve 11 mounted on the swing frame 5 of the excavator 1 will be described. In this case, a bolt or the like that attaches the building mounting portion 15C of the floor 15 to the counterweight 13 is removed, and the tilting mechanism 34 tilts the floor 15 or the like in the direction of arrow A with the floor support mechanism 33 as a fulcrum.

  Thereby, maintenance work of the engine 6 and the control valve 11 etc. which are always covered with the floor 15 can be performed. On the other hand, when the maintenance work or the like is finished, the maintenance work is finished by tilting down the floor 15 or the like in the direction of arrow B by the tilting mechanism 34 and fixing the building mounting portion 15C of the floor 15 to the counterweight 13. Can do.

  Thus, according to the first embodiment, the floor 15 having the driver's seat 26 on which the operator sits is provided on the revolving frame 5 so as to cover the equipment such as the engine 6 and the control valve 11. A storage container 22 (fuel storage unit 23) for storing the fuel 24 supplied to the engine 6 is provided. Therefore, between the engine 6 that generates heat and noise, the control valve 11 and the like and the operator seated on the driver's seat 26, the double structure portion by the storage container 22 and the fuel 24 that absorbs vibrations that are difficult to transmit heat. Can be arranged.

  As a result, the heat and noise generated by the control valve 11 can be blocked by the foot storage part 22A and the fuel 24 of the storage container 22 located in the footrest part 15A of the floor 15, and the heat and noise generated by the engine 6 The noise can be blocked by the intermediate vertical storage portion 22B, the intermediate horizontal storage portion 22C and the fuel 24 of the storage container 22 located in the partition portion 15B of the floor 15. Thereby, an operator's working environment can be made favorable.

  In addition, the floor 15 has a wide range (large area), and almost the entire floor 15 is formed as the storage container 22 (fuel storage unit 23), so that the amount of fuel stored in the fuel storage unit 23 can be increased. Thereby, the working time of the hydraulic excavator 1 can be extended, and work efficiency can be improved.

  In addition, since the foot storage part 22A of the storage container 22 is provided with an article storage part 22F for storing articles, the footrest part 15A of the floor 15 is provided with an article (such as an air conditioning unit 30, tools, spare parts, etc.). Neither can be accommodated).

  Furthermore, since the floor 15 is formed by a strong metal outer frame body 16 and a resin storage container 22 supported by the outer frame body 16, the storage container 22 is complicated by resin molding. It can be made into a simple shape and can be manufactured at low cost. The outer frame 16 made of a metal material can firmly support the storage container 22.

  Next, FIGS. 14 to 17 show a second embodiment of the present invention. The feature of the present embodiment is that the floor is formed as a cast product using a metal material, and the fuel storage portion is an internal space formed in the cast product. 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. 14, reference numeral 41 denotes a floor according to the second embodiment. The entire floor 41 is formed as a cast product using a metal material. Further, the floor 41 is rotatably supported at the front position by the front beam 5G of the revolving frame 5 via the floor support mechanism 33, and the rear position is provided with a vibration-proof mount (not shown) on the counterweight 13. It is removably attached via. Further, as shown in FIGS. 15 to 17, the floor 41 is provided with a fuel storage section 46 described later.

  Here, the floor 41 is located on the front side, a footrest portion 42 that serves as a footrest for an operator seated on the driver's seat 26, and a partition that covers the upper side from the front side of the engine 6 rising from the rear portion of the footrest portion 42 It comprises a portion 43, a building attachment portion 44 provided extending from the upper end portion of the partition portion 43 to the rear side, and a side surface portion 45 rising from the right position of the footrest portion 42.

  Further, the footrest portion 42 has a lever / pedal mounting portion 42A to which the traveling operation lever / pedal 29 and the like are attached, and the front side of the lever / pedal attaching portion 42A is a front bracket 42B to which the floor support mechanism 33 is attached. It has become. On the other hand, the footrest part 42 is provided with an article accommodating part 42C that accommodates an article by recessing the right part from the intermediate part and opening upward. As shown in FIG. 14, the air conditioning unit 30 is accommodated in the article accommodating portion 42C as an article.

  On the other hand, the partition portion 43 includes a rising portion 43A extending upward from the rear side of the footrest portion 42, a driver seat mounting portion 43B extending from the upper side of the rising portion 43A, and a rear side of the driver seat mounting portion 43B. It is roughly constituted by a back inclined portion 43C extending obliquely upward from the side. Further, the driver seat mounting portion 43B of the partition portion 43 is provided with a plurality of screw holes 43D for mounting the seat rail 27 that supports the driver seat 26. Further, an oil supply port 43E is provided on the upper left side of the back inclined portion 43C so as to communicate with an upper portion of a fuel storage portion 46 described later. And the sheet-like heat insulating material (not shown) is affixed on the surface facing the engine 6 of the partition part 43.

  Further, the building attachment portion 44 is detachably attached to the upper surface portion of the counterweight 13 via an anti-vibration mount (not shown), and is formed in an arc shape so that the rear edge portion is along the counterweight 13. Has been. An attachment portion 45A for attaching the moving member 34E of the tilting mechanism 34 is provided at an upper position of the side surface portion 45.

  The floor 41 configured in this manner is disposed at a position where the footrest portion 42 blocks between the control valve 11 mounted on the turning frame 5 and the feet of the operator seated on the driver's seat 26. Further, the rising portion 43A and the driver seat mounting portion 43B of the partition portion 43 are respectively disposed at positions that block between the engine 6 mounted on the rear side of the turning frame 5 and the feet and torso of the operator. A later-described fuel storage section 46 provided on the floor 41 is provided across both the footrest section 42 and the partition section 43.

  Next, 46 indicates a fuel storage portion formed as an internal space of the floor 41. As shown in FIGS. 16 and 17, the fuel storage unit 46 stores the fuel 24 supplied to the engine 6. The fuel storage unit 46 includes a front space portion 46A formed in the footrest portion 42, an intermediate space portion 46B formed in the rising portion 43A of the partition portion 43, a driver seat mounting portion 43B of the partition portion 43, and a rear surface. The rear space portion 46C is formed in the inclined portion 43C. Here, the fuel storage section 46 is formed over a wide range, although most of the fuel storage section 46 is provided on the floor 41 that is formed thin, as in the fuel storage section 23 according to the first embodiment. Therefore, a lot of fuel 24 can be stored. The fuel storage unit 46 serves as a partition wall between the engine 6 and the control valve 11 and the operator seated on the driver's seat 26, and suppresses transmission of heat and noise (vibration) generated by the engine 6 and the control valve 11. can do.

  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. In particular, according to the second embodiment, the floor 41 is formed as a cast product using a metal material, and the fuel storage unit 46 is formed as an internal space of the floor 41 made of a cast product. Thereby, since the floor 41 and the fuel storage part 46 which comprises a fuel tank can be formed as an integral structure, reduction of a number of parts, improvement of assembly workability | operativity, etc. can be aimed at.

  Next, FIG. 18 and FIG. 19 show a third embodiment of the present invention. The feature of this embodiment is that the fuel storage part is provided in the partition part among the footrest part and the partition part of the floor. 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. 18, reference numeral 51 denotes a floor according to the third embodiment. The floor 51 includes an outer frame body 52 and a storage container 54 (a fuel storage unit 55) which will be described later. Moreover, the floor 51 is comprised by 51 A of footrest parts, the partition part 51B, and the building attachment part 51C similarly to the floor 15 by 1st Embodiment. The partition 51B of the floor 51 is composed of a rising portion 51B1 and a driver seat mounting portion 51B2. The floor 51 is provided with the fuel storage part 55 only in the partition part 51B.

  Reference numeral 52 denotes an outer frame body according to the third embodiment which forms a support structure of the floor 51. The outer frame body 52 is formed using a metal material. Reference numeral 53 denotes a front frame portion of the outer frame body 52 provided on the front side. The front frame portion 53 is roughly constituted by a left side plate 53A, a right side plate 53B, a lever / pedal attachment portion 53C, and a front bracket 53D in substantially the same manner as the front frame portion 17 according to the first embodiment described above. However, the front frame portion 53 according to the third embodiment is different from the front frame portion 17 according to the first embodiment in that the support plate described above is not provided and the floor panel 53E is provided. It is different.

  Here, the floor panel 53E is formed as a flat plate that closes the opening on the rear side of the lever / pedal mounting portion 53C between the left side plate 53A and the right side plate 53B. The floor panel 53E is provided with an article accommodating portion 53F that accommodates the air conditioning unit 30 as an article that opens upward.

  54 is a storage container according to the third embodiment made of a resin material provided separately from the outer frame body 52, and the storage container 54 constitutes a floor 51 together with the outer frame body 52. Here, the storage container 54 (fuel storage part 55) is provided only in the partition part 51B among the footrest part 51A and the partition part 51B of the floor 51. And the storage container 54 is roughly comprised by 54 A of vertical storage parts, the horizontal storage part 54B, and the back surface storage part 54C, as shown in FIG. Further, the back surface storage portion 54C is provided with a fuel filler port 54D, and the lateral storage portion 54B is provided with a plurality of screw holes 54E for attaching the driver's seat 26.

  Reference numeral 55 denotes a fuel storage part formed as an internal space of the storage container 54 constituting the floor 51. The fuel storage unit 55 stores the fuel 24 supplied to the engine 6 and is formed across the vertical storage unit 54A, the horizontal storage unit 54B, and the back storage unit 54C of the storage container 54. In addition, the fuel storage unit 55 cooperates with the storage container 54 to form a partition wall between the engine 6 and the operator seated on the driver's seat 26, so that the heat and noise (vibration) generated by the engine 6 are transmitted to the operator. It is possible to prevent transmission.

  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.

  Next, FIG. 20 and FIG. 21 show a fourth embodiment of the present invention. A feature of the present embodiment is that the fuel storage unit is provided in the footrest portion of the floor footrest portion and the partition portion. 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. 20, reference numeral 61 denotes a floor according to the fourth embodiment. The floor 61 includes an outer frame body 62 and a storage container 69 (fuel storage unit 70), which will be described later. Moreover, the floor 61 is comprised by the footrest part 61A, the partition part 61B, and the building attachment part 61C substantially the same as the floor 15 by 1st Embodiment. The partition 61B of the floor 61 is composed of a rising part 61B1 and a driver seat mounting part 61B2. The floor 61 is provided with the fuel storage part 70 only in the footrest part 61A.

  Reference numeral 62 denotes an outer frame body according to the fourth embodiment which forms a support structure of the floor 61, and the outer frame body 62 is formed using a metal material. Further, the outer frame body 62 extends upward from the front frame portion 63 including the left side plate 63A, the right side plate 63B, the lever / pedal attachment portion 63C, the front bracket 63D, and the support plate 63E, and from the rear portion of the front frame portion 63. A vertical plate portion 64, a horizontal plate portion 65 extending from the upper portion of the vertical plate portion 64 to the rear side and having a screw hole 65A for attaching the driver's seat 26, and an obliquely upper side from the rear portion to the rear side of the horizontal plate portion 65 An inclined plate portion 66 extending from the upper portion of the inclined plate portion 66 to the rear side, and attached to the counterweight 13 so as to be detachable, and extended upward from the right side plate 63B of the front frame portion 63. A side plate 68 provided with a mounting portion 68A to which the moving member 34E of the tilting mechanism 34 is mounted is roughly configured.

  Reference numeral 69 denotes a storage container according to the fourth embodiment made of a resin material provided separately from the outer frame body 62, and the storage container 69 constitutes a floor 61 together with the outer frame body 62. Here, the storage container 69 (fuel storage unit 70) is provided only in the footrest portion 61A of the footrest portion 61A and the partition portion 61B of the floor 61. As shown in FIG. 21, the storage container 69 is configured as a substantially rectangular container that is long in the left and right directions, and an oil supply port 69A is provided on the left side thereof. Further, the storage container 69 is provided with an article accommodating portion 69B located on the right side from the intermediate portion.

  Reference numeral 70 denotes a fuel storage portion formed as an internal space of a storage container 69 constituting the floor 61. The fuel storage portion 70 stores the fuel 24 supplied to the engine 6 and is only provided on the footrest portion 61A of the floor 61. Is provided. Further, the fuel storage unit 70 cooperates with the storage container 69 and becomes a partition wall between the control valve 11 and the operator's feet seated on the driver's seat 26, thereby generating heat and noise (vibration) generated by the control valve 11. ) Can be prevented from being transmitted to the operator.

  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.

  In the third embodiment, the partition 51B of the floor 51 is provided with a storage container 54 formed in a step shape by the vertical storage 54A, the horizontal storage 54B and the back storage 54C, and the entire storage container 54 is provided. The case where the fuel storage unit 55 is provided across the vertical storage unit 54A, the horizontal storage unit 54B, and the back storage unit 54C is described as an example. However, the present invention is not limited to this. For example, the present invention may be configured as a first modification shown in FIG.

  That is, in FIG. 22, the storage container 81 is formed by a vertical storage part 81A, a horizontal storage part 81B, and a back surface storage part 81C, and an oil supply port 81D is provided in the back surface storage part 81C. And it is good also as a structure which provides the fuel storage part 82 in the storage container 81 over the horizontal storage part 81B located in the driver's seat mounting part 51B2 of the partition part 51B of the floor 51, and the back surface storage part 81C.

  Moreover, you may comprise like the 2nd modification shown in FIG. In this case, the storage container 91 is formed by the vertical storage unit 91A, the horizontal storage unit 91B, and the back surface storage unit 91C, and the oil supply port 91D is provided in the horizontal storage unit 91B. And it is good also as a structure which provides the fuel storage part 92 only in the vertical storage part 91A located in the rising part 51B1 of the partition part 51B of the floor 51 in the storage container 91. FIG.

  In the second embodiment, the floor 41 is formed by the footrest portion 42, the partition portion 43, the building attachment portion 44, and the like, and the fuel storage portion 46 is connected to the footrest portion 42 and the partition portion 43 of the floor 41. The case where it is provided is described as an example. However, the present invention is not limited to this configuration, and for example, the fuel storage unit may be provided in any one of the footrest part, the partition part, and the building attachment part of the floor. Moreover, it is good also as a structure which provides a fuel storage part in two selected site | parts.

  On the other hand, in the first embodiment, the case where the floor 15 is a tilt floor whose rear side is tiltable with the front side position as a fulcrum is illustrated. However, the present invention is not limited to this, and the floor may be fixedly attached to the revolving frame. This configuration can be similarly applied to each embodiment.

  Moreover, in 1st Embodiment, the case where the air conditioning unit 30 used as the indoor unit of an air conditioner was accommodated in the goods accommodating part 22F of the storage container 22 was mentioned as an example, and was demonstrated. However, the present invention is not limited to this. For example, another article such as a maintenance tool or a spare part may be accommodated in the article accommodating portion 22F. This configuration can be similarly applied to each embodiment.

  Further, in the first embodiment, the floor 15 is stepped by a front footrest portion 15A and a partition portion 15B that rises from the rear portion of the footrest portion 15A and covers the upper side from the front side of the engine 6. The driver seat 26 is mounted on the driver seat mounting portion 15B2 of the partition portion 15B. However, the present invention is not limited to this, for example, a configuration in which a substantially flat driver seat mounting portion extending rearward from the footrest portion is provided, and the driver seat is mounted on the driver seat support provided in the driver seat mounting portion. Also good.

  On the other hand, in each embodiment, the cab type hydraulic excavator 1 provided with the cab 32 covering the periphery and the upper side of the driver's seat 26 as a construction machine has been described as an example. However, the present invention is not limited to this. For example, the present invention may be applied to a canopy-type hydraulic excavator provided with a canopy that covers the upper side of the driver's seat with a plurality of pillars and a roof.

  Furthermore, in each embodiment, the crawler type hydraulic excavator has been described as an example of the construction machine. However, the present invention is not limited to this, and other types of engines including engines such as a wheel type hydraulic excavator and a hydraulic crane are provided. It can be widely applied to construction machines.

1 Excavator (construction machine)
2 Lower traveling body 3 Upper revolving body 4 Working device 5 Revolving frame 6 Engine (equipment)
11 Control valve (equipped equipment)
15, 41, 51, 61 Floor 15A, 42, 51A, 61A Foot rest 15B, 43, 51B, 61B Partition 15B1, 43A, 51B1, 61B1 Rising part 15B2, 43B, 51B2, 61B2 Driver seat mounting part 15C, 44 , 51C, 61C Building mounting portion 16, 52, 62 Outer frame 22, 54, 69, 81, 91 Storage container 22F, 42C, 53F, 69B Article housing portion 23, 46, 55, 70, 82, 92 Fuel storage portion 24 Fuel 26 Driver's seat 30 Air conditioning unit (article)

Claims (6)

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 working device provided on the front side of the upper revolving body so as to be able to move up and down,
The upper swing body includes a swing frame that forms a support structure, a mounted device that includes an engine mounted on the swing frame, and a driver seat that is provided on the swing frame so as to cover the mounted device and on which an operator sits. A construction machine comprising a floor having
The flow A constitutes an outer frame body made of a metal material, by a storage container made of a resin material supported outer frame,
A construction machine characterized in that an internal space formed in the storage container serves as a fuel storage part for storing fuel to be supplied to the engine. The storage container includes a foot reservoir extending horizontally located on the front side, and an intermediate vertical reservoir extending toward the upper side from the rear of the foot reservoir, toward the rear from the intermediate vertical reservoir an intermediate horizontal reservoir extending, constituted by a rear reservoir portion extending toward the rear from the rear of the middle lateral reservoir,
The construction machine according to claim 1, wherein the fuel storage unit is formed over all of the foot storage unit, the intermediate vertical storage unit, the intermediate horizontal storage unit, and the back storage unit . 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 working device provided on the front side of the upper revolving body so as to be able to move up and down,
The upper swing body includes a swing frame that forms a support structure, a mounted device including an engine mounted on the swing frame, and a foot that is provided on the swing frame so as to cover the mounted device and on which an operator puts a foot. In a construction machine comprising a floor formed by a mounting portion and a partition portion having a driver seat mounting portion to which a driver seat on which an operator stands up from the rear portion of the footrest portion is mounted.
The floor is constituted by an outer frame body made of a metal material, and a storage container made of a resin material provided in the partition part separately from the outer frame body,
A construction machine characterized in that an internal space formed in the storage container serves as a fuel storage part for storing fuel to be supplied to the engine . The storage container provided in the partition part of the floor is constituted by a vertical storage part, a horizontal storage part and a back storage part ,
The fuel storage section, the construction machine according to claim 3 comprising as providing at least one crab arrangement of said longitudinal reservoir and horizontal reservoir and the rear reservoir. 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 working device provided on the front side of the upper revolving body so as to be able to move up and down,
The upper swing body includes a swing frame that forms a support structure, a mounted device including an engine mounted on the swing frame, and a foot that is provided on the swing frame so as to cover the mounted device and on which an operator puts a foot. In a construction machine comprising a floor formed by a mounting portion and a partition portion having a driver seat mounting portion to which a driver seat on which an operator stands up from the rear portion of the footrest portion is mounted.
The floor is formed by an outer frame body made of a metal material, and a storage container made of a resin material provided on the footrest portion separately from the outer frame body,
Construction machine, characterized in that the interior space formed in the storage container, and a fuel storage unit for storing the fuel supplied to the engine. 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 working device provided on the front side of the upper revolving body so as to be able to move up and down,
The upper swing body includes a swing frame that forms a support structure, a mounted device that includes an engine mounted on the swing frame, and a driver seat that is provided on the swing frame so as to cover the mounted device and on which an operator sits. A construction machine comprising a floor having
The floor is formed as a casting using a metal material,
Construction machine, characterized in that the interior space formed in the casting, and a fuel storage unit for storing the fuel supplied to the engine.

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