Work machine

Abstract

Provided is a work machine in which the operability of a display device of the work machine can be improved without interfering with the operability of the work machine using an operating lever. This work machine is provided with: a first lever which is disposed beside one side of a driver seat and which operates a work machine; a second lever disposed on one side of the first lever and operating the dumping device; a display device disposed in front of the driver seat, the first lever, and the second lever; and a light-push dial that operates the display device, the light-push dial being between the first lever and the second lever when viewed from a position where the back surface faces the driver seat.

Description

Technical Field

[0001] The present invention relates to a working machine. Background Art

[0002] As a related art, the following working machine is known: a jog dial is provided near the lower part of an operating lever provided on the side of a seat in order to operate a display device of the working machine, and the jog dial is arranged at a front position below the operating lever, and overlaps with a bulldozer blade arranged outside the operating lever when viewed from the rear. (See Patent Document 1)

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-185306

[0004] The jog dial is configured to overlap the front of the bulldozer handle when viewed from a position facing the driver's seat. Therefore, after operating the display device using the jog dial, when the operator wishes to directly operate the bulldozer handle, the operator needs to hold the bulldozer handle by pulling his forearm closer in such a way that the forearm does not touch the bulldozer handle, and care must be taken to prevent malfunctions.

[0005] In some aspects, there are working machines in which the password is displayed on the display device and inputted using a keypad after the key is turned on, and the engine is started. In such working machines, it is also desired to smoothly transfer to a series of actions such as operating the display device by jogging the dial, setting the working machine, and operating the operating levers including the bulldozer lever after the password is inputted using the keypad. Summary of the invention

[0006] The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a working machine capable of improving the operability of a display device of the working machine without interfering with the operability of the working machine using an operating lever.

[0007] The working machine involved in one form of the present invention comprises: an upper body, which is rotatably supported on a lower traveling body equipped with a soil discharge device; and a working machine, which is supported on the above-mentioned upper body. The working machine also comprises: a first rod, which is arranged next to one side of the driving seat of the above-mentioned working machine, and operates the above-mentioned working machine; a second rod, which is arranged on the side of one side of the above-mentioned first rod, and operates the above-mentioned soil discharge device; a display device, which is arranged in front of the above-mentioned driving seat, the above-mentioned first rod and the above-mentioned second rod; and a light push dial, which operates the above-mentioned display device, and when observed from the back facing the above-mentioned driving seat, the above-mentioned light push dial is between the above-mentioned first rod and the above-mentioned second rod.

[0008] According to the present invention, it is possible to provide a working machine that can improve the operability of a display device of the working machine without interfering with the operability of the working machine using an operating lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a left side view of the hydraulic excavator according to the first embodiment of the present invention.

[0010] Figure 2 It is a plan view of the operator's seat of the hydraulic excavator according to the first embodiment of the present invention.

[0011] Figure 3 This is an example of a schematic diagram of the operator's seat of the hydraulic excavator according to the first embodiment of the present invention as viewed from the back side of the seat.

[0012] Figure 4 It is a plan view of the jog turntable of the hydraulic excavator according to the first embodiment of the present invention.

[0013] Figure 5 It is a plan view of the keypad of the hydraulic excavator according to the first embodiment of the present invention.

[0014] Figure 6 It is a plan view of a driver's seat of a hydraulic excavator according to a second embodiment of the present invention.

[0015] Figure 7 This is an example of a schematic diagram of a driver's seat of a hydraulic excavator according to a second embodiment of the present invention as viewed from the back side of the seat.

[0016] Figure 8 It is a plan view of a driver's seat of a hydraulic excavator according to a modified example of the second embodiment of the present invention.

[0017] Description of Reference Numerals

[0018] 315…display device; 312…driving seat; 313b1…first lever (operating lever); 318…second lever (operating lever); 317a…jog dial. DETAILED DESCRIPTION

[0019] Hereinafter, as a representative example of the working machine involved in the present invention, a hydraulic excavator 100 is cited as an example, and the first embodiment involved in the present invention is described in detail with reference to the drawings. In addition, for the upper rotating body 300, the direction in which the working machine 400 is installed is referred to as the front, and the opposite direction is referred to as the rear.

[0020] like Figure 1 As shown, the hydraulic excavator 100 includes a self-propelled lower traveling body 200, an upper swing body 300 swingably supported on the lower traveling body 200, and a working machine 400 supported in front of the upper swing body 300 to be swingable up and down.

[0021] The lower traveling body 200 includes a center frame (not shown) and side frames 210 that are symmetrically paired on the left and right of the center frame and extend in the front-rear direction. At the rear ends of the left and right side frames 210, drive wheels 212 driven by traveling motors 211 are provided. A plurality of idler wheels 213 are arranged facing forward, and the drive wheels 212 and the idler wheels 213 are wound with crawler belts 214. Further, a soil discharging device 215 is supported at the front part of the center frame, and the soil discharging device 215 operates in a vertically movable manner by the expansion and contraction of a scraper cylinder 216 that connects the soil discharging device 215 and the center frame.

[0022] The upper slewing body 300 is composed of a cab 320, an engine room 330, and swing struts 340. The cab 320 is arranged from the front part to the rear part of the side of the machine body on one side of the machine body and covers the driver's seat 310. The engine room 330 is formed from the other side part of the machine body to the rear part of the machine body. The swing struts 340 are rotatably supported on the protruding parts at the front end of the machine body and support the working machine 400 so as to be rotatable up and down.

[0023] The working machine 400 is configured with: a boom 410, which is rotatably supported up and down on the swing strut 340; an arm 420, which is rotatably assembled to the front end of the boom 410; a bucket 430, which is detachably assembled to the front end of the arm 420 in a rotatable manner via a quick coupler 421; and a swing cylinder, which is on the right side of the frame of the upper slewing body 300 to operate the swing strut 340 (not shown).

[0024] The boom cylinder 440 is provided in front of and below the boom 410, and the boom 410 operates in a vertically movable manner by the expansion and contraction of the boom cylinder 440.

[0025] The arm cylinder 450 is provided above the boom 410, and the arm 420 performs a dumping operation (Japanese: ダンプ動作) of rotating forward and a digging operation (Japanese: クラウド動作) of rotating backward by the expansion and contraction of the arm cylinder 450.

[0026] The bucket cylinder 470 is arranged in front of (above) the arm 420 and is connected to the arm 420 and the bucket 430 via a bucket link 460. The bucket 430 performs a dumping operation of rotating forward and a digging operation of rotating backward by the expansion and contraction of the bucket cylinder 470.

[0027] In the engine room 330, there are arranged: an engine (not shown); a variable displacement pump (not shown) that pumps working oil for a plurality of actuators that drive the boom cylinder 440, the arm cylinder 450, etc. to make the hydraulic excavator 100 operate by the engine; and a collective body of direction switching valves that control the corresponding actuators, that is, a control valve (not shown), and other devices.

[0028] Figure 2is a top view of the driver's seat 310, Figure 3 This is a schematic diagram of the driver's seat 310 viewed from the back of the seat 312. A right side wall 311R having a window of the driver's cab 320 above is arranged on one side (right side) of the floor member 311, a boarding port 311L constituted by a door that can be opened and closed is arranged on the other side (left side) of the floor member 311, a windshield 311F is arranged at the front end of the floor member 311, and the seat 312 is arranged at the rear of the floor member 311.

[0029] A pair of left and right travel rods 313a1 and 313a2 are provided in a front portion of the floor member 311 so as to face the windshield 311F. The pair of left and right travel rods 313a1 and 313a2 are provided upright and have pedals at their base ends. The hydraulic excavator 100 can travel forward and backward by tilting the pair of left and right travel rods 313a1 and 313a2 forward and backward, respectively.

[0030] A dashboard 314 is provided at the front of the floor part 311 in a manner inclined from the front toward the rear and downward along the right side wall 311R, and a liquid crystal monitor 315 is provided at the upper part of the dashboard 314. The display part 315a of the liquid crystal monitor 315 and the operation button 315b for operating the liquid crystal monitor 315 arranged therebelow are both arranged to face the direction of the seat 312.

[0031] An air duct for the air exhausted from the air conditioning unit is formed inside the instrument panel 314, and an air conditioning outlet 314a for blowing out conditioned air is arranged below the LCD monitor 315 in a manner facing the seat 312. In addition, a defroster outlet 314b for blowing out conditioned air is arranged in front of and below the LCD monitor 315 in a manner facing the boarding port 311L.

[0032] On one side of the seat 312, i.e. the right side, there is a rod control console 316a with an operating rod 313b1 erected at the front upper end, and on the other side of the seat 312, i.e. the left side (boarding port 311L side), there is a rod control console 316b with an operating rod 313b2 erected at the front upper end.

[0033] When the operating lever 313b1 is tilted forward, the boom 450 is lowered, and when the operating lever 313b1 is tilted backward, the boom 450 is raised. In addition, when the operating lever 313b2 is tilted forward, the bucket arm 410 performs a dumping action, and when the operating lever 313b2 is tilted backward, the bucket arm 410 performs an excavation action. That is, the operating lever 313b1 and the operating lever 313b2 operate the working machine 400.

[0034] The rod control console 316b is arranged to extend from a position slightly in front of the seat 312 toward the rear while being inclined, and has a cut-off rod 316b2 erected toward the front at the front end, and an elbow rest 316b1 behind the operating rod 313b2. In addition, if the cut-off rod 316b2 is pulled toward the rear, the rod control console 316b rotates toward the rear, the pilot pressure of the control valve is cut off, and the operating rods 313b1 and 313b2 and the travel rods 313a1 and 313a2 become inoperable.

[0035] The lever console 316a extends from a position slightly in front of the seat 312 while being inclined toward the rear, and extends straight from the middle to the vicinity of the rear end of the seat 312. An operating switch 316a1 for the air conditioner is arranged above this portion.

[0036] The lever console 316a is provided with an elbow rest 316a2 behind the operating lever 313b1, and a key switch 316a3 for starting the engine is mounted on an inclined portion below the elbow rest 316a2 and in front of the operating switch 316a1 of the air conditioner.

[0037] A control console 317 is disposed on one side (right side) of the lever control console 316a, and an operating lever 318 for operating the soil discharging device 215 is erected between the control console 317 and the right side wall 311R, and the grip of the operating lever 318 is tilted toward the seat 312 so as to be located above the control console 317. That is, the operating lever 318 is disposed on one side, i.e., the right side, of the operating lever 313b1, and the operating lever 318 is disposed next to the right side (next to one side) of the elbow rest 316a2.

[0038] The control console 317 is arranged to extend from the vicinity of the front end portion of the rod control console 316 a to a rear end portion that does not reach the rod control console 316 a .

[0039] A jog dial 317a for operating the display device 315 is arranged at the front of the upper surface of the console 317, a keypad 317b is arranged behind the jog dial 317a, a power switch 317c for starting the quick connector 421 for replacing the bucket 430 with other accessories, and an operating switch 317d for operating the quick connector 421 are arranged behind the keypad 317b, and an accelerator 317e for setting the engine speed and a power socket 317f are arranged on the rear side toward the rear end.

[0040] The upper surface of the console 317 is formed to be inclined from one side (right side) toward the seat 312, and the jog dial 317a, keypad 317b and power socket 317f are configured to be inclined downward, so as to be easily operated by an operator sitting on the seat 312.

[0041] The jog dial 317a is arranged at a gentler inclination than the accelerator 317e, and is arranged at a position where the display device 315a can be easily operated.

[0042] In addition, a gentle push dial 317a is arranged at the right front below the elbow rest 316a2, and an accelerator 317e is arranged at the right rear below the elbow rest 316a2 at a position lower than the gentle push dial 317a, so that the gentle push dial 317a, which is used more frequently, is arranged so that the operator can easily use it while resting his elbow on the elbow rest 316a2, and the accelerator 317e, which is used less frequently than the gentle push dial 317a, is arranged so that the operator can easily remove his elbow from the elbow rest 316a2.

[0043] Figure 4 It is a top view of the push dial 317a, which comprises: a dial portion 317a1, which protrudes from the main body of the case, and is used to move the highlighted portion of the icon displayed on the display portion 315a of the display device 315 by rotating it; a button 317a2, which is located in the center of the dial portion, and is used to select a highlighted icon, execute screen migration and other decisions; a button 317a3, which is located at the lower left of the dial portion, and is used to migrate the screen to the menu screen; a button 317a4, which is arranged next to the button 317a3, and is used to migrate the screen to the main screen; and a button 317a5, which is arranged next to the button 317a4, and is used to migrate the screen to the previous screen.

[0044] The jog dial 317a is arranged so that the protruding dial portion 317a1 faces the display device 315, so that the dial operation can be easily performed from the seat 312 and the buttons 317a3, 317a4, and 317a5 can be easily operated.

[0045] The jog dial 317a is arranged in parallel next to the base end of the operating rod 313b1, and is arranged at a position where the operator can easily operate the jog dial 317a and the operating rod 313b1 while resting his elbow on the elbow rest 316a2.

[0046] Figure 5 It is a top view of the keypad 317b, which consists of keys 317b1, key 317b2, key 317b3, key 317b4, key 317b5, key 317b6, key 317b7, key 317b8, key 317b9 and key 317b0 arranged in two rows along the front-to-back direction, and numbers 1 to 9 and 0 are printed on them respectively.

[0047] The keypad 317b is arranged above the right side of the key switch 316a3. When the engine key 316a3 is turned to the key-on position, the user can directly reach upward in this state and press the key of the keypad 317b according to the password request displayed on the display unit 315a to enter the password. If the password is authenticated, the engine is allowed to start. The engine is started by turning the engine key 316a3 to the start position. The keypad 317b is an authentication device for performing an authentication operation for allowing the start of the engine (prime mover) of the hydraulic excavator 100. After the key switch 316a3 is turned to the key-on position, a series of operations can be smoothly performed, including inputting the password using the keypad 317b, operating the display unit 315 by gently pushing the dial 317a, and turning the engine key 316a3 to the start position.

[0048] The keypad 317b is printed with not only numbers for password input but also icons representing functions of the hydraulic excavator 100, and the keypad 317b has a function as a function enabling switch for enabling the function represented by the icon.

[0049] Icons representing lights are printed on key 317b1 and key 317b2, respectively. When key 317b1 is pressed, the light illuminating the front lights up, and when key 317b2 is pressed, the light illuminating the rear lights up.

[0050] The key 317b3 is a switch for selecting an energy saving mode that prioritizes fuel consumption by reducing the engine speed, and the key 317b4 is a switch for selecting automatic deceleration that reduces the engine speed to the idle speed when the operating lever is not operated for a certain period of time.

[0051] The key 317b5 is a switch for selecting a crane mode for safely performing a lifting operation, and the key 317b6 is a switch for switching a monitoring image of the vicinity of the hydraulic excavator 100 displayed on the display unit 315a.

[0052] Key 317b7 is a switch for operating the wipers, and key 317b8 is a switch for spraying washer fluid while operating the wipers.

[0053] The key 317b9 is a switch for switching the travel motor 211 from the first speed to the second speed, and the key 317b0 is a switch for stopping the alarm sound that sounds when the hydraulic excavator 100 is traveling.

[0054] For some of the functions of the hydraulic excavator 100 assigned to the keypad 317 b , the functions can be enabled by operating the display device 315 with the jog dial 317 a .

[0055] That is, by arranging the keypad 317b at a position closer to the elbow rest 316a2 than the jog dial 317a, routine operations that are frequently used can be easily performed. The keypad 317b is an authentication device for allowing the driving of the prime mover of the hydraulic excavator 100 and includes a switch assigned with the same function as the operation that enables the function of the hydraulic excavator 100 to be effectively enabled by operating the display device 315 with the jog dial 317a.

[0056] When viewed from the back facing the driver's seat 312, the jog dial 317a and the keypad 317b are located between the operating lever 313b1 and the operating lever 318, or between the elbow rest 316b1 and the operating lever 318. According to the above structure, the display device 315 can be smoothly operated by the jog dial 317a without impairing the operability of the operating lever 313b1 and the operating lever 318.

[0057] When viewed from the back facing the driver's seat 312, the grip of the operating lever 318 is tilted toward the seat 312 and is located above the jog dial 317a and the keypad 317b. According to the above structure, the operation of the operating lever 318 and the jog dial 317a can be smoothly performed.

[0058] When viewed from the back facing the driver's seat 312, the display unit 315a is arranged above the jog dial 317a, so that the operability of the jog dial 317a and the visibility of the display unit 315a can be ensured.

[0059] When viewed from the back facing the driver's seat 312, the operation button 315b is arranged between the jog dial 317a and the display unit 315a, which can ensure the operability of the jog dial 317a and the operation button 315b and the visibility of the display unit 315a.

[0060] When viewed from the back facing the driver's seat 312, the accelerator 317e is arranged above the right side (one side) of the key switch 316a3, and the push dial 317a is arranged above the right side (one side) of the accelerator 317e. That is, the operator's operability is improved by arranging the operating parts with high frequency of use at the top.

[0061] Hereinafter, the second embodiment of the present invention will be described in detail. In addition, description of the parts common to the first embodiment will be omitted.

[0062] Figure 6 It is a top view of the driver's seat 510, and a part of the floor surface and the equipment arranged on the floor surface are omitted. Figure 7 This is a schematic diagram showing the driver's seat 510 as viewed from the back of the seat 512 .

[0063] A rod control console 516a is disposed on one side, i.e., the right side, of the seat 512, where an operating rod 513b1 is erected at the front upper end and an elbow rest 516a2 is disposed behind the operating rod 513b1. A rod control console 516b is disposed on the other side, i.e., the left side, where an operating rod 513b2 is erected at the front upper end and an elbow rest 516b1 is disposed behind the operating rod 513b2. The operating rod 513b1 and the operating rod 513b2 can operate the working machine 400. The rod control console 516a forms an inclined surface that is inclined downward behind the elbow rest 516a2, and a key switch 516a3 is disposed on the inclined surface.

[0064] A LCD monitor 515 is provided at the front of a console 517 formed along the right side of a pole console 516a extending from the front to the rear of the seat 512 . A display unit 515a of the LCD monitor 515 and operation buttons 515b for operating the LCD monitor 515 arranged therebelow are both arranged to face the direction of the seat 512 .

[0065] An air duct for the flow of air exhausted from the air conditioning unit is formed inside the console 517, and an air conditioning outlet 514a and an air conditioning outlet 514b for blowing out conditioned air are arranged above and to the lower right of the LCD monitor 515.

[0066] An operating lever 518 for operating the soil discharging device 215 is erected on the right side of the control console 517 , and a grip portion of the operating lever 518 is inclined toward the seat 512 so as to be located above the control console 517 .

[0067] A push dial 517a of the operation display device 515 is arranged behind the operating lever 513b1 on the upper surface of the control console 517, and an authentication device, i.e., a keypad 517b, is arranged behind the push dial 517a for performing authentication operations for allowing the start of the engine (prime mover) of the hydraulic excavator 100. A receiving portion 517c is formed behind the keypad 517b in which the upper surface of the control console 517 is recessed and erected in a manner surrounding the periphery. In addition to beverages, mobile phones and the like can also be accommodated in the receiving portion 517c.

[0068] An accelerator 517 e is disposed in front of the operating lever 513 b 1 and behind the display device 515 at a position where the upper side of the console 517 is recessed.

[0069] The jog dial 517a is located to the right rear of the operating lever 513b1 and to the left rear of the operating lever 518 in the neutral position, and is arranged in front of the keypad 517b. The accelerator 517e is arranged in front of the operating lever 513b1. The operating lever 513b1 is arranged on the right side (one side) near the front of the seat 512. The seat 512 is arranged behind the display device 510 arranged on the side of the front of the driver's seat 510. That is, the operability is improved by arranging the operating member with a high operation frequency at a position near the elbow rest 516a2.

[0070] When viewed from the back facing the driver's seat 512, the jog dial 517a is located between the operating lever 513b1 and the operating lever 518, or between the elbow rest 516a2 and the operating lever 518. According to the above structure, the display device 315 can be smoothly operated by the jog dial 517a without impairing the operability of the operating lever 513b1 and the operating lever 518. In addition, in the embodiment, although it is located in a position hidden in the housing portion 517c, it does not prevent the jog dial 517a from being located between the operating lever 513b1 and the operating lever 518.

[0071] Next, a modification of the second embodiment of the present invention will be described. Note that description of the common parts with the first embodiment and the second embodiment will be omitted.

[0072] Figure 8 It is a top view of the driver's seat 610, and a part of the floor surface and the equipment arranged on the floor surface are omitted.

[0073] On one side, that is, on the right side, of the seat 612, a lever control console 616a is arranged with an operating lever 613b1 erected at the front upper end and an elbow rest 616a2 arranged behind the operating lever 613b1.

[0074] A liquid crystal monitor 615 is provided at the front portion of a control console 617 formed along the right side of the lever control console 616 a , and an operating lever 618 for operating the soil removal device 215 is provided upright on the right side of the control console 617 .

[0075] A push dial 617a of the operation display device 615 is arranged on the upper surface of the console 617 and in front of the operating lever 613b1, and an authentication device, i.e., a keypad 617b, is arranged behind the push dial 617a for performing authentication operations for allowing the start of the prime mover of the hydraulic excavator 100, and an operating switch 616a1 of the air conditioning device is arranged behind the keypad 617b.

[0076] The jog dial 617a is located in front of the right side of the operating lever 613b1 and in front of the left side of the operating lever 618 in the neutral position, and is arranged in front of the keypad 617b. The operating lever 613b1 is arranged on the right side (one side) near the front of the seat 612, and the seat 612 is arranged behind the display device 615 arranged on the front side of the driver's seat 610. According to this structure, the operating lever and the keypad 617b for operating the working machine 400 and the soil ejector 215 can be arranged near the elbow rest 616a2, and the operability of other operating members can be given priority over the operability of the jog dial 617a.

[0077] The authentication device in the first embodiment, the second embodiment, and the modification of the second embodiment may be a biometric authentication device such as fingerprint authentication or vein authentication.

[0078] The invention according to the embodiment of the present invention can be identified as the following notes.

[0079] <Note 1> A working machine comprising: an upper body rotatably supported by a lower traveling body having an earthmoving device; and a working machine supported by the upper body.

[0080] Among them, there are:

[0081] A first lever is disposed beside one side of a driver's seat of the working machine to operate the working machine;

[0082] A second rod is disposed on the side of one side of the first rod to operate the soil discharge device;

[0083] A display device is disposed in front of the driving seat, the first rod, and the second rod; and

[0084] Push the dial to operate the above display device.

[0085] When viewed from the back facing the driving seat, the light push dial is located between the first rod and the second rod.

[0086] <Note 2> The operating machinery described in Note 1, wherein:

[0087] The jog dial is disposed beside the first rod in a plan view.

[0088] <Note 3> A machine as described in Note 1 or 2, wherein:

[0089] When viewed from the back facing the driving seat, the display unit of the display device is located above the jog dial.

[0090] <Note 4> A working machine as set forth in any one of Notes 1 to 3, wherein:

[0091] The display device includes an operating member for operating the display device.

[0092] When viewed from a position facing the driver's seat from the back, the operating member is arranged between the display unit and the jog dial.

[0093] <Note 5> A working machine as set forth in any one of Notes 1 to 4, wherein:

[0094] A key switch for starting the prime mover of the working machine is arranged behind the first rod and on a control console on which the first rod is vertically installed.

[0095] When viewed from the rear side facing the driver's seat, the jog dial is disposed above the key switch.

[0096] <Note 6> A working machine as set forth in any one of Notes 1 to 5, wherein:

[0097] An authentication device is provided, the authentication device is arranged adjacent to the jog dial, and is used to perform an authentication operation for allowing the prime mover to start after the key of the key switch is turned on.

[0098] <Note 7> A working machine as set forth in any one of Notes 1 to 6, wherein:

[0099] The light push dial is arranged in front of the authentication device.

[0100] <Note 8> A working machine as set forth in any one of Notes 1 to 6, wherein:

[0101] The authentication device is arranged beside the second rod.

[0102] The various structures described in the first embodiment, the second embodiment, and their modified examples described above can be adopted in combination as appropriate.

[0103] In the above, a hydraulic excavator is used as an example of a working machine, but the working machine is not limited to a hydraulic excavator. It can also be not only construction machinery such as a compact truck loader and a wheel loader, but also other working machines such as a tractor. Moreover, an engine is used as a prime mover, but it can also be an electric motor.

[0104] As mentioned above, although embodiment of this invention was described, the scope of this invention is not limited to this, and it can be implemented expanding or changing within the range which does not deviate from the summary of this invention.

[0105] Industrial Applicability

[0106] The present invention relates to a working machine and has industrial applicability.

Claims

1. A working machine comprising: an upper body rotatably supported by a lower traveling body having an earthmoving device; and a working machine supported by the upper body, It is characterized in that have: A first lever, disposed beside one side of a driver's seat of the working machine, for operating the working machine; A second rod, disposed on the side of one side of the first rod, for operating the soil discharge device; A display device is arranged in front of the driving seat, the first rod and the second rod; as well as Push the dial to operate the display device. When viewed from a position facing the driver's seat from the back, the jog dial is located between the first rod and the second rod.

2. The working machine according to claim 1, characterized in that: The jog dial is disposed beside the first rod in a plan view.

3. The working machine according to claim 1 or 2, characterized in that: When viewed from a position facing the driver's seat from the back, the display portion of the display device is located above the jog dial.

4. The working machine according to claim 3, characterized in that: The display device includes an operating member for operating the display device. When viewed from a position facing the driver's seat from the back, the operating member is arranged between the display unit and the jog dial.

5. The working machine according to claim 4, characterized in that: A key switch for starting the prime mover of the working machine is arranged behind the first rod and on a console where the first rod is vertically installed. When viewed from the rear side facing the driver's seat, the jog dial is disposed above the key switch.

6. The working machine according to claim 5, characterized in that: An authentication device is provided, the authentication device being disposed adjacent to the jog dial and used for performing an authentication operation for permitting the starting of the prime mover after the key of the key switch is turned on.

7. The working machine according to claim 6, characterized in that: The push dial is arranged in front of the authentication device.

8. The working machine according to claim 7, characterized in that: The authentication device is arranged beside the second rod.

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