JP2001234559A - Construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve visibility of various kinds of instruments, an indicator for instance, fitted to a panel of a console instrument and prevent a user from inadvertently controlling the instruments. SOLUTION: An opening/closing cover 18 covering a panel 14 to which an operating switch 16 is attached and a locking mechanism 20 locking in the closed condition of the cover 18 are provided in the left side console 11 of the right and left external sides. Accordingly, when the cover 18 is opened, it shades sunlight or the like to improve the visibility of an indicator 15. When the cover 18 is closed, it covers the panel 14 to prevent the indicator 15 and the operating switch 16 from being inadvertently operated. Since the locking mechanism 20 is locked in the state that the cover 18 is closed, the indicator 15 and the operating switch 16 can be protected from mischief.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine such as a hydraulic shovel, and more particularly to a construction machine having consoles having operation levers on both left and right sides of a driver's seat.

[0002]

2. Description of the Related Art Generally, construction machines such as hydraulic excavators are
A self-propelled vehicle body comprising a lower traveling structure and an upper revolving structure rotatably mounted on the lower traveling structure is provided, and a working device for excavating soil and the like is raised on the front side of the upper revolving structure. It is movably provided. Some hydraulic shovels are provided with a cab on a frame of an upper-part turning body, which is located on the front left side.

A cab of this type of a conventional hydraulic excavator is provided on a revolving frame of an upper revolving structure, and is provided on a cab box defining an operator's cab therein and on a floor plate covering a lower side of the cab box. A driver's seat, a console disposed on both the left and right sides of the driver's seat, and an operation lever for operating the working device, which is tiltably provided, and a console positioned rearward of the operation lever. And a panel provided on the upper surface side of the console.

[0004] Here, the panel includes various appliances used during operation, for example, a switch such as a work mode selection switch, a traveling mode selection switch, a light switch, an air conditioning operation switch, an audio equipment operation switch, an engine start switch, and the like. A display device or the like for displaying information such as the type of fuel, the remaining amount of fuel, the operating time, the operation status of the switch, and the like is attached.

[0005] An operator sits on a driver's seat provided on the cab and operates an operating lever provided on the left and right consoles to operate a working device to perform earth excavation work and the like. . The operator operates switches mounted on the panel according to the work site and the contents of the work. Further, at the time of work, by looking at the display device, information such as the remaining fuel amount and the operating time displayed on the display device can be obtained.

[0006]

In the above-mentioned hydraulic shovel according to the prior art, when sunshine or the like is inserted into the cab, the sun shines on the panel and information on a display device provided on the panel is difficult to see. Become. In particular,
In recent years, since a liquid crystal screen is used for a display device, there is a problem that the screen becomes difficult to see due to reflection of sunlight.

[0007] In addition to the display device, switches and the like are mounted on the panel. Then, the excavator may be left at the work site even after the work is completed. For this reason, when the hydraulic excavator is left at the work site, there is a problem that switches may be inadvertently operated after the work is completed.

The present invention has been made in view of the above-mentioned problems of the prior art, and another object of the present invention is to prevent the sunshine or the like from hitting various appliances provided on a panel, for example, a display device, and to display the information. An object of the present invention is to provide a construction machine capable of improving the visibility of a device.

Another object of the present invention is to provide a construction machine capable of preventing various instruments provided on the panel, for example, switches from being carelessly operated. is there.

[0010]

According to a first aspect of the present invention, there is provided a construction machine comprising: a vehicle body on which a working device is mounted; a driver seat provided on a floor panel of the vehicle body; A console disposed on both the left and right sides of the driver's seat and having tiltable operation levers for operating the working device; and a console located on the upper surface side of the console and located behind the operation lever. And a panel on which various instruments used during operation are mounted.

A feature of the structure adopted in the first aspect of the present invention is that an opening / closing cover is provided so that the panel can be opened when various instruments are used and the panel can be closed when not used.

With this configuration, various tools can be used by opening the panel with the opening / closing cover during work. At this time, the openable cover serves as a sunshade to block the sunlight, so that the visibility of the display device and the like constituting various appliances can be improved. On the other hand, when the operation is completed, the panel is closed by the opening / closing cover, and switches and the like constituting various appliances are covered, thereby preventing the switches from being carelessly operated.

According to the second aspect of the present invention, the wrist rest is fixedly attached to the console so as to cover a part of the panel from above at the rear side of the operation lever.

With this configuration, the wrist rest can be provided without hindering the use of various instruments attached to the panel. When the operation lever is operated,
By placing the wrist on the wrist rest, accurate operations can be performed easily.

According to the third aspect of the present invention, the opening and closing cover is disposed between the wrist rest and the panel so as to be openable and closable.

With this configuration, the opening and closing cover can be opened and closed using the space between the panel on the console and the wrist rest.

According to the fourth aspect of the present invention, the wrist rest has a fixed end attached to the rear side of the operation lever, extends upward from the fixed end, is bent substantially in an L shape, and is a cantilevered free end. The configuration is such that the distal end portion extends to a position covering substantially half or less of the panel.

With this configuration, the wrist rest can be easily attached to the console with only the fixed end. In addition, since the tip of the free end extends only to a position covering substantially less than half of the panel, the wrist rest is prevented from hindering the visibility and operability of various instruments attached to the panel. be able to.

According to the fifth aspect of the present invention, the opening / closing cover is configured to open outward in the left and right directions. Thus, when the opening / closing cover is open, sunlight or the like inserted from the outside can be blocked, and various instruments can be easily seen from an operator located inside.

According to the sixth aspect of the present invention, the opening and closing cover is provided with a locking means for fixing the opening and closing cover in a closed state.

With this configuration, after the operation is completed, the open / close cover is closed and the open / close cover is fixed by the lock means, whereby the use of various instruments attached to the panel can be prohibited.

According to the seventh aspect of the present invention, the lock means is disposed behind the opening / closing cover. Thus, the locking means can be arranged at a position where it does not obstruct various instruments and is easily operated by the operator.

According to an eighth aspect of the present invention, the locking means is configured to perform a locking and unlocking operation using an engine key for starting the engine.

With this configuration, it is possible to operate the lock means using the engine key for starting the engine without preparing a separate key for the lock means.

According to the ninth aspect of the present invention, the cab box is provided on the vehicle body to cover the driver's seat and the console, and the panel is provided on the console located at the entrance of the cab box.

With this configuration, various instruments mounted on the panel, for example, information displayed on the display device can be checked from the outside on the entrance side without getting into the cab box.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A construction machine according to an embodiment of the present invention will be described in detail with reference to FIGS.

Reference numeral 1 denotes a lower traveling body of a hydraulic excavator, and 2 denotes an upper revolving body which is mounted on the lower traveling body 1 so as to be capable of turning. Is composed. The upper revolving superstructure 2 has a revolving frame 3, a counterweight 4 mounted on a rear end of the revolving frame 3, and an engine mounted on the front side of the counterweight 4 and mounted on the revolving frame 3. (Not shown) and the like, and a cab 7 which will be described later, which is disposed on the front left side of the revolving frame 3. On the front side of the revolving frame 3, a working device 6 for performing, for example, excavation work of earth and sand is attached so as to be able to move up and down.

Reference numeral 7 denotes a cab arranged on the left side of the front part of the revolving frame 3. The cab 7 is, as shown in FIGS.
A cab box 8 defining an operator's cab inside, and a floor plate 9 provided below the cab box 8 are roughly constituted. Here, the cab box 8 is
A, a rear plate 8B, left and right side plates 8C and 8D and a ceiling plate 8E (shown in FIG. 1) form a box. The left side plate 8C is provided with a doorway 8F for entering and exiting the cab 7, and the doorway 8F is provided at the doorway 8F.
Is mounted to be openable and closable.

A driver's seat 10 is located in the cab box 8 and is provided on the floor plate 9. The driver's seat 10 includes a pedestal 10 A provided on the floor plate 9 so as to be adjustable in front and rear directions.
And a seat 10B provided on the pedestal 10A. On the left and right sides of the driver's seat 10, a left console 11 and a right console 22, which will be described later, are provided.

Numeral 11 denotes a driver's seat 10 on the outside in the left and right directions.
The console 11 on the left side is attached to the pedestal 10A and located on the left side of the console.
B, left and right side surfaces 11C and 11D, an upper surface 11E, a bottom surface 11F, and the like form a substantially box shape extending in the front and rear directions. Further, an operation lever 12 for operating the working device 6 located on the front side is mounted on the console 11 so as to be tiltable.

Reference numeral 13 denotes a wrist rest provided on the console 11 on the left side. The wrist rest 13 is fixedly attached to the rear side of the operation lever 12 so as to extend upward as shown in FIGS. It is composed of a support portion 13A serving as a fixed end, and a hand rest portion 13B serving as a free end bent in an L-shape from the upper portion of the support portion 13A and extending rearward in a cantilever manner. Further, the tip of the hand placing portion 13B extends to a position covering the panel 14 described below from above, and
4 covers about 1/3 of the total length.

A panel 14 is provided on the upper surface 11E of the console 11 on the left side of the console 11 at a position rearward of the operation lever 12. The panel 14 is provided with a display device 15, an operation switch 16 and the like described later. I have.

Reference numeral 15 denotes a display device which is a part of various instruments mounted near the front side of the panel 14, and which is a part of the display device 15.
Is for displaying information such as the remaining fuel amount and the operating time on the liquid crystal screen, and information such as the ON / OFF state and the switching state of the operation switch 16.

Are a plurality of operation switches which are located on the rear side of the display device 15 and form a part of various instruments mounted on the panel 14, and each of the operation switches 1
As 6, a work mode selection switch, a traveling mode selection switch, a light switch, an operation switch for air conditioning, an audio equipment operation switch, an engine start switch, and the like are used.

A mounting frame 17 is provided on the console 11 on the left side around the panel 14.
Are screwed to the upper surface 11E of the console 11, the support 13A of the wrist rest 13, and the like.

Reference numeral 18 denotes an opening / closing cover which is attached to the mounting frame 17 via hinges 19, 19 so as to be openable and closable. The opening / closing cover 18 is a flat cover plate 1 attached to each hinge 19.
8A and a frame plate 18B extending so as to surround the front, rear and right sides of the cover plate 18A.
A lock mechanism 20 to be described later is provided on the rear side of the frame plate 18B.
The engagement groove 18C with which the engagement member 20C is engaged extends leftward and rightward.

The opening / closing cover 18 is attached to the display device 1.
5. When the operation switch 16 is used, the panel 14 is opened. When the display device 15 and the operation switch 16 are not used, the panel 1 is opened.
4 is closed. Thereby, the opening / closing cover 1
8 can be protected by covering the display device 15 and the operation switch 16 when it is closed, covering the display device 15 and the operation switch 16 when it is closed.

A lock mechanism 20 is provided at the rear end of the console 11 at the rear side of the opening / closing cover 18 and serves as a lock means. As shown in FIG. 11B and the like, and a key cylinder support frame 20A
A key cylinder 20B, which is attached to A and is operated by inserting an engine key (not shown) for starting the engine, and when the engine key is inserted into the key cylinder 20B and rotated, Key cylinder 20B
And a tongue-shaped engaging member 20C that rotates in conjunction with the engine key together with the rotating portion of. The engaging member 20C is engaged with and disengaged from the engaging groove 18C of the opening / closing cover 18 by rotating.

Here, the lock mechanism 20 is provided with the opening / closing cover 1.
8 is closed, the engine key is inserted into the key cylinder 20B, and the engine key is turned counterclockwise, so that the engaging member 20 is inserted into the engaging groove 18C of the opening / closing cover 18.
C is engaged to lock (lock) the cover 18 in a closed state. In addition, by rotating the engine key clockwise, the engagement member 20C can be released from the engagement groove 18C of the opening / closing cover 18 and unlocked, as indicated by the two-dot chain line in FIG.

On the other hand, reference numeral 21 denotes a cover holding member provided on the lower surface of the hand rest 13B of the wrist rest 13, and the cover holding member 21 is elastically attached to the frame plate 18B of the opening / closing cover 18 when the opening / closing cover 18 is opened. The opening and closing cover 18 is pressed and held in an open state.

On the other hand, reference numeral 22 denotes a right side console (see FIGS. 2 and 3) which is located on the right side of the driver's seat 10 on the inner side in the left and right directions and is attached to the pedestal 10A.
The upper surface 22A has a substantially box shape extending in the front and rear directions like the console 11 on the left side. An operation lever 23 is attached to the front side of the console 22 so as to be tiltable, and a wrist rest 24 similar to the above-described wrist rest 13 is attached to the rear side of the operation lever. Further, a panel 25 is provided on the upper surface 22A of the right console 22 at a position rearward of the operation lever 23.
The panel 25 is provided with a plurality of operation switches 26, 26,.

The hydraulic shovel according to the present embodiment has the above-described configuration. Next, the operation of the opening / closing cover 18 which is a characteristic part of the present embodiment will be described.

First, in order to operate the hydraulic excavator, the operator who got into the cab 7 and sat on the driver's seat 10 inserts the engine key into the key cylinder 20B of the lock mechanism 20, and turns the engine key clockwise. Then, the locking of the opening / closing cover 18 by the lock mechanism 20 is released.
Thus, the operator can open the opening / closing cover 18 and use the display device 15 of the panel 14 and the operation switches 16. When the cover 18 is opened, the cover holding member 21 provided on the wrist rest 13 is closed.
Thereby, the opening / closing cover 18 can be held in an open state.

Here, when the cover 18 is opened, the cover 18 blocks sunlight or the like inserted from the outside, so that reflection can be suppressed and information displayed on the display device 15 can be easily viewed.

On the other hand, when the operation by the hydraulic excavator is completed, the opening / closing cover 18 is closed to cover the display device 15 and the operation switch 16, and in this state, the key cylinder 20B of the lock mechanism 20 is rotated counterclockwise by the engine key. This allows the locking mechanism 20 to lock the cover 18 with the cover 18 closed.

As described above, according to the present embodiment,
An open / close cover 18 that covers the display device 15 and the operation switch 16 is provided on the left console 11, which is the outside in the left and right directions. Accordingly, when the opening and closing cover 18 is opened, the sunlight and the like inserted from the outside can be blocked by the opening and closing cover 18, so that the display device 15 is prevented from being reflected and the visibility of the display device 15 is improved. can do. When the cover 18 is closed, the cover 18 covers the panel 14 to which the display device 15 and the operation switch 16 are attached, thereby preventing the cover 14 from being operated carelessly.

Moreover, since the console 11 is provided with a lock mechanism 20 for locking the cover 18 with the cover 18 closed, the lock mechanism 20 locks the cover 18 with the cover 18 closed, so that after the work is completed. The display device 15 and the operation switch 16 can be protected from mischief.

Further, since the left and right consoles 11 and 22 are provided with the wrist rests 13 and 24 on which the wrists are placed when operating the operation levers 12 and 23, the operator can accurately operate the operation levers 12 and 23. , And can be operated in a comfortable state, and the workability can be improved.

The opening / closing cover 18 is connected to the console 11.
Since it is provided between the upper panel 14 and the hand rest 13B of the wrist rest 13, the open / close cover 18 can be opened or closed by utilizing the space between them, which is a dead space.

The wrist rest 13 can be mounted on the console 1 only by attaching the fixed end of the wrist rest 13 to the rear side of the operation lever 12.
1, the mounting structure can be simplified. In addition, since the lift rest 13 has the tip portion of the hand rest 13B extending to a position covering about one third of the entire length of the panel 14, the wrist rest 13 provides visibility of the display device 15 and operation of each operation switch 16. It can be prevented from hindering the performance and the like, and visibility and operability can be improved.

On the other hand, since the opening / closing cover 18 is configured to open outward in the left and right directions, when the opening / closing cover 18 is opened, it is possible to efficiently block sunlight or the like inserted from the outside, and furthermore, it is positioned inside. The operator can easily view the display device 15 and operate the operation switch 16 easily.

Since the lock mechanism 20 is provided on the rear side of the console 11, the lock mechanism 20
5. It is possible to prevent the operation switch 16 from being disturbed when using the operation switch 16 and to enhance workability.

Further, since the lock mechanism 20 is configured to perform locking and unlocking operations using an engine key for starting the engine of the construction machine, the key for the construction machine can be prepared without preparing a key for the lock mechanism 20 separately. The key cylinder 20B can be operated using an engine key for starting the engine, and the operability of the lock mechanism 20 can be improved.

Further, the panel 14 to which the display device 15 and the like are attached is provided on the left console 11 on the side of the entrance 8F of the cab box 8, so that the operator can
The display on the display device 15 can be checked from outside the cab 7 without getting into the cab 7, and the checking operation can be easily performed.

In the embodiment, the excavator provided with the cab box 8 covering the driver's seat 10, the consoles 11, 22 and the like has been described as an example. However, the present invention is not limited to this. Like a hydraulic excavator according to a modification shown in FIG. 8, a lower traveling body 31 and an upper revolving body 32 are provided.
4. The opening / closing cover 37 may be provided on the left and right consoles 35 (only the left side is shown) and the canopy 36 covering the upper part of the driver's seat 34. Furthermore, the present invention may be applied to a console of a hydraulic shovel having no canopy, and the console may be provided with an opening / closing cover.

Further, in the embodiment, an example will be described in which an opening / closing cover 18 is provided on the console 11 on the left side, and the display device 15 and the panel 14 on which each operation switch 16 is mounted are opened / closed by the opening / closing cover 18. However, the present invention is not limited to this, and an opening / closing cover may be provided on the console 22 on the right side, and the panel 25 to which each operation switch 26 is attached may be opened / closed by the opening / closing cover.

In the embodiment, the opening / closing cover 18 is used.
Has been described as being mounted on a mounting frame 17 mounted on the console 11 via a hinge 19 so as to be openable and closable.
Alternatively, for example, the attachment frame 17 may be omitted, and the opening / closing cover 18 may be directly attached to the console 11 via the hinge 19. Further, the opening / closing cover 18 may be attached to the panel 14.

Further, in the embodiment, the case where the lock mechanism 20 is operated using the engine key for starting the engine has been described as an example. However, the present invention is not limited to this. Alternatively, the lock mechanism 20 may be operated by a separate key.

In the embodiment, the console 11,
Although the description has been made assuming that the wrist rests 13 and 24 are provided on the 22, the present invention is not limited to this, and can be applied to a console without a wrist rest.

On the other hand, in the embodiment, the wrist rest 13
Although the cover holding member 21 is provided on the cover member 21 and the opening / closing cover 18 is held open by the elastic force of the cover holding member 21, the present invention is not limited to this. And the like, and the opening and closing cover 18 may be engaged with the hook and held. Further, a spring member may be provided between the mounting frame 17 and the opening / closing cover 18, and the opening / closing cover 18 may be held open by the urging force of the spring member.

Further, in the embodiments, the hydraulic shovel has been described as an example of a construction machine. However, the present invention is not limited to this, and may be applied to other construction machines such as a hydraulic crane and a wheel loader. Good. Here, in the case of a construction machine such as a hydraulic crane in which the driver's seat is disposed on the front right side, an opening / closing cover or the like may be disposed on the right console, which is the outside in the left and right directions.

[0063]

As described in detail above, according to the first aspect of the present invention, the opening / closing cover is provided so that the panel can be opened when various instruments are used and the panel can be closed when not in use. Various instruments can be used by opening the panel with the opening / closing cover, and at this time, the opened opening / closing cover serves as a shade to block sunlight, so that the visibility of the display device and the like constituting the various instruments is improved. Can be. On the other hand, at the end of the work, by closing the panel with the opening / closing cover and covering switches and the like constituting various appliances, it is possible to prevent the switches from being carelessly operated, and to operate the switches and the display device. Various equipment can be protected.

According to the second aspect of the present invention, the wrist rest is fixedly attached to the console so as to cover a part of the panel from above at the rear side of the operation lever. By placing the wrist on the, accurate operation can be performed in a comfortable state.

According to the third aspect of the present invention, the opening / closing cover is disposed between the wrist rest and the panel so as to be openable and closable. The cover can be opened and closed.

According to the fourth aspect of the present invention, the wrist rest has a fixed end attached to the rear side of the operation lever, extends upward from the fixed end, is bent substantially in an L-shape, and is a cantilever free end. The wrist rest can be easily attached to the console with only the fixed end since the tip of the wrist rest extends to a position covering substantially half or less of the panel. In addition, since the tip of the free end extends only to a position covering substantially less than half of the panel, the wrist rest is prevented from hindering the visibility and operability of various instruments attached to the panel. And visibility and operability can be improved.

According to the fifth aspect of the present invention, since the opening / closing cover is configured to open to the outside in the left and right directions, when the opening / closing cover is opened, it is possible to block sunlight or the like that is inserted from the outside, and to position the cover inside. For example, the operator can easily view the display device among various instruments.

According to the sixth aspect of the present invention, since the opening / closing cover is provided with the locking means for fixing the opening / closing cover in a closed state, after the work is completed, the opening / closing cover is closed and the opening / closing cover is closed by the locking means. By fixing, the use of various instruments attached to the panel can be prohibited, and the various instruments can be protected from mischief.

According to the seventh aspect of the present invention, since the locking means is provided behind the opening / closing cover, the locking means does not interfere with various instruments and is located at a position where the operator can easily operate. It can be arranged, and visibility and operability of various instruments can be improved.

According to the eighth aspect of the present invention, the locking means is configured to perform locking and unlocking operations using the engine key for starting the engine, so that the key for the locking means is not separately prepared, and the engine is not required. The lock means can be operated using an engine key for starting the engine,
Operability can be improved.

According to the ninth aspect of the present invention, the cab box that covers the driver's seat and the console is provided on the vehicle body, and the panel is provided on the console located on the entrance side provided in the cab box. The obtained information of the display device can be checked from outside the cab box without getting into the cab, and the checking operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front view showing a hydraulic excavator according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the inside of the cab as viewed from the direction of arrows II-II in FIG.

FIG. 3 is a cross-sectional view of the inside of the cab as viewed from an arrow III-III in FIG. 2;

FIG. 4 is a front view showing a console, a panel, an opening / closing cover, and the like.

FIG. 5 is a cross-sectional view of the console, panel, opening / closing cover, and the like, as viewed from arrows VV in FIG.

FIG. 6 is a partially broken external perspective view showing a console, a panel, an opening / closing cover, and the like.

FIG. 7 is an enlarged plan view of a main part showing the lock mechanism in an enlarged manner.

FIG. 8 is a front view showing a hydraulic excavator according to a modification of the present invention.

[Description of Signs] 1,31 Lower traveling body (vehicle body) 2,32 Upper revolving superstructure (vehicle body) 6 Work equipment 8 Cab box 9 Floor plate 10,34 Driver seat 11,22,35 Console 12,23 Operation lever 13,24 Wrist rest 14 Panel 15 Display device (Various devices) 16, 26 Operation switch (Various devices) 18, 37 Open / close cover 20 Lock mechanism (Lock means)

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Makoto Makoto 650, Kandate-cho, Tsuchiura-shi, Ibaraki Prefecture Inside the Tsuchiura Plant of Hitachi Construction Machinery Co., Ltd. F-term in Tsuchiura Plant (reference) 2D015 EB00

Claims (9)

[Claims] 1. A vehicle body on which a working device is mounted, a driver seat provided on a floor plate of the vehicle body, and operation levers disposed on both left and right sides of the driver seat for operating the working device are tilted. A construction machine comprising a rotatably provided console, and a panel which is located behind the operation lever and is provided on an upper surface side of the console and on which various instruments used during operation are attached. A construction machine provided with an opening / closing cover capable of opening the panel when using various instruments and closing the panel when not in use. 2. The construction machine according to claim 1, wherein a wrist rest is fixedly attached to the console so as to cover a part of the panel from above at a rear side of the operation lever. 3. The construction machine according to claim 2, wherein the opening / closing cover is disposed between the wrist rest and a panel so as to be openable and closable. 4. A fixed end of the wrist rest is attached to a rear side of the operation lever, and a free end which extends upward from the fixed end, is bent substantially in an L-shape, and is cantilevered, has a free end. The construction machine according to claim 2, wherein the construction machine extends to a position covering substantially half or less of the panel. 5. The construction machine according to claim 1, wherein the opening / closing cover is configured to open outward in left and right directions. 6. The opening and closing cover is provided with locking means for fixing the opening and closing cover in a closed state.
The construction machine according to 2, 3, 4 or 5. 7. The construction machine according to claim 6, wherein said locking means is provided on a rear side of said opening / closing cover. 8. The construction machine according to claim 6, wherein said locking means is configured to perform locking and unlocking operations using an engine key for starting an engine. 9. A cab box covering a driver's seat and a console is provided on the vehicle body, and the panel is provided on a console located on a side of an entrance provided in the cab box. , 5, 6, 7, or 8.