JP2023112365A - Construction machine - Google Patents

Abstract

To provide a construction machine allowing effective use of a space inside a console box, in a constitution of switching the operation state of a valve by operation input by a console operation member.SOLUTION: A construction machine has a console box in which a console is set in an operator cab in a cab box and the console forms an outer covering, and an operation member allowing input of an operation of switching the operation state of a solenoid valve. A valve controller is stored inside the console box, the valve controller controls power supply to the solenoid valve and the operation of the solenoid valve, on the basis of a signal inputted from the operation member in accordance with the input of the operation by the operation member.SELECTED DRAWING: Figure 4

Description

The present invention relates to construction machinery.

Patent Literature 1 discloses a construction machine in which an upper revolving body is rotatably connected to a lower running body. In the upper revolving body of this construction machine, a cab box is installed on a revolving body frame. An operator's cab is formed inside the cab box, and a console is installed in the operator's cab. The console includes a console box forming an exterior and operating members such as an operating lever. A construction machine is provided with a pilot valve whose operating state changes in accordance with the supply state of pilot oil. In response to an operation input from the operation member of the console, the state of supply of pilot oil to the pilot valve changes, and the operating state of the pilot valve is switched.

International Publication No. 2013/051609

As in Patent Document 1, in a configuration in which the operating state of a pilot valve is switched by inputting an operation using an operation member of a console, the operation member and the pilot valve are connected by a hose or the like, and the operation member is connected via the hose or the like. It is necessary to supply pilot oil to the pilot valve from Therefore, most of the space formed inside the console box is occupied by hoses and the like for supplying the pilot oil. 2. Description of the Related Art Construction machines that switch the operation state of a valve such as a pilot valve by inputting an operation using an operation member of the console are required to effectively utilize the space inside the console box. It is also required to effectively utilize the limited space formed in the driver's cab by effectively utilizing the space inside the console box.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to use the space inside the console box effectively in a structure in which the operating state of a valve is switched by inputting an operation using an operation member of a console. It is to provide construction machinery that is utilized for

In order to achieve the above object, a construction machine according to one aspect of the present invention includes a cab box that forms an operator's cab therein, a solenoid valve that changes its operating state in response to a power supply state, and a solenoid valve that is installed in the operator's cab. A console comprising: a console box forming an exterior; an operation member capable of inputting an operation for switching the operating state of the electromagnetic valve; a valve controller that controls the supply of power to the solenoid valve and controls the operation of the solenoid valve based on a signal that is input from the operating member in response to the input of the operation at .

According to the present invention, it is possible to provide a construction machine in which the space inside the console box is effectively utilized in a configuration in which the operating state of the valve is switched by inputting an operation using the operating member of the console.

FIG. 1 is a schematic diagram showing a hydraulic excavator according to the first embodiment. FIG. 2 is a perspective view showing the internal configuration of the cab box in the hydraulic excavator according to the first embodiment. FIG. 3 is a perspective view showing one configuration of a console installed in an operator's cab in the hydraulic excavator according to the first embodiment. FIG. 4 is a block diagram schematically showing a configuration for transmitting signals and the like and a control configuration in the console, main controller, etc. shown in FIG. 3 for the hydraulic excavator according to the first embodiment.

Hereinafter, embodiments will be described with reference to the drawings.

FIG. 1 shows a hydraulic excavator 1 according to a first embodiment as an example of construction machinery. As shown in FIG. 1 , the hydraulic excavator 1 includes a lower running body 2 and an upper revolving body 3 . The upper revolving body 3 is connected vertically above the lower traveling body 2 . The upper revolving structure 3 is rotatable with respect to the lower traveling structure 2 about a revolving axis P along the vertical direction (directions indicated by arrows Z1 and Z2).

In the upper swing structure 3, the front-rear direction (the directions indicated by arrows X1 and X2) that intersects (perpendicularly or substantially perpendicular to) the vertical direction, and the direction that intersects both the vertical direction and the front-rear direction (substantially orthogonal) width direction (a direction orthogonal or substantially orthogonal to the paper surface in FIG. 1) is defined. In addition, the lower traveling body 2 also has a front-rear direction that intersects (perpendicularly or substantially perpendicular to) the vertical direction, and a width direction that intersects (perpendicularly or substantially at right angles) with both the vertical direction and the front-rear direction. be done. In FIG. 1, the longitudinal direction of the lower traveling body 2 coincides or substantially coincides with the longitudinal direction of the upper revolving body 3, and the width direction of the lower traveling body 2 coincides or substantially coincides with the width direction of the upper revolving body 3. indicate. In addition, FIG. 1 shows the hydraulic excavator 1 in a state where the front side of the lower traveling body 2 matches or substantially matches the front side of the upper revolving body 3 (the arrow X1 side).

The upper revolving body 3 includes a revolving body frame 5 and a cab box 6 . The cab box 6 is installed vertically on the revolving body frame 5 from above. A work device 8 is connected to the upper swing body 3 . The working device 8 can be swung with respect to the lower traveling body 2 together with the upper rotating body 3 . In the example of FIG. 1 , the work device 8 is arranged side by side with the cab box 6 in the width direction of the upper revolving structure 3 . Further, the work device 8 protrudes from the upper revolving body 3 to the front side of the upper revolving body 3 .

The work device 8 has a boom 11 , an arm 12 and a bucket 13 . In the work device 8 , the base end of the boom 11 is connected to the upper swing body 3 , the base end of the arm 12 is connected to the tip of the boom 11 , and the bucket 13 is connected to the tip of the arm 12 . Further, in the hydraulic excavator 1 in the example of FIG. 1, a boom cylinder 15, an arm cylinder 16, and a bucket cylinder 17 are provided as actuators. The boom cylinder 15, the arm cylinder 16, and the bucket cylinder 17 are each actuated by hydraulic oil, and their operating states change according to the supply state of the hydraulic oil.

By extending or retracting the boom cylinder 15 , ie by actuating the boom cylinder 15 , the boom 11 is raised or lowered with respect to the upper swing structure 3 . Also, by extending or retracting the arm cylinder 16 , that is, by operating the arm cylinder 16 , the arm 12 is raised or lowered with respect to the boom 11 . By extending or contracting the bucket cylinder 17 , that is, by operating the bucket cylinder 17 , the bucket 13 rotates about the connecting position to the arm 12 . In the work using the work device 8, the boom cylinder 15, the arm cylinder 16, and the bucket cylinder 17, which are actuators, are operated as described above to excavate earth and sand.

Further, the hydraulic excavator 1 is provided with a swing motor (not shown) as an actuator. Like the boom cylinder 15 and the like, the hydraulic motor is operated by hydraulic oil, and its operating state changes according to the supply state of the hydraulic oil. By rotating the swing motor, that is, by operating the swing motor, the upper swing structure 3 swings with respect to the lower traveling structure 2 .

FIG. 2 shows the internal configuration of the cab box 6. As shown in FIG. In FIG. 2 and the like, the directions indicated by arrows Y1 and Y2 are the width directions of the upper revolving body 3 . As shown in FIG. 2 and the like, an operator's cab 7 is formed inside the cab box 6 . Therefore, the exterior of the cab 7 is formed by the cab box 6 . In addition, in the cab box 6 (cab 7), the front-rear direction that intersects (perpendicularly or substantially perpendicular to) the vertical direction, and the front-rear direction that intersects (perpendicularly or substantially at right angles to) both the vertical direction and the front-rear direction A width direction is defined. The front-back direction of the cab box 6 matches or substantially matches the front-back direction of the upper revolving body 3 , and the front side of the cab box 6 matches or substantially matches the front side of the upper revolving body 3 . The width direction of the cab box 6 matches or substantially matches the width direction of the upper rotating body 3 .

The cab box 6 has a floor plate 21 and a rear plate 22 . The floor plate 21 is adjacent to the operator's cab 7 from the vertically lower side, and the rear panel 22 is adjacent to the operator's cab 7 from the rear side of the cab box 6 (the rear side of the upper revolving body 3). Consoles 20A and 20B and a seat 23 are installed in the driver's cab 7 . The seat 23 is attached to the floor plate 21 vertically from above. In one example, the seat 23 is installed so as to be movable in the front-rear direction of the cab box 6 with respect to the floor plate 21 and the like. Further, the console 20A is arranged side by side with respect to the seat 23 on one side in the width direction of the cab box 6 . The console 20B is arranged side by side with respect to the seat 23 in the width direction of the cab box 6 on the side opposite to the side where the console 20A is located. Therefore, the seat 23 is arranged in the driver's cab 7 side by side with the consoles 20A and 20B in the width direction of the cab box 6, and is arranged between the consoles 20A and 20B in the width direction of the cab box 6. .

Further, in an example such as FIG. 2 , a cover member 25 is attached to the rear plate 22 of the cab box 6 . A main controller 26 is accommodated in a space formed between the cover member 25 and the rear plate 22 . In one example such as FIG. 2 , the main controller 26 is arranged behind the cab box 6 with respect to the consoles 20A, 20B and the seat 23 in the driver's cab 7 . The main controller 26 is arranged outside each of the consoles 20A and 20B.

The main controller 26 is a central control device or the like that controls the entire hydraulic excavator 1 . The main controller 26 is composed of a processing device such as a computer, and includes a processor and a storage medium. The processor is an integrated circuit or circuitry including a CPU (Central Processing Unit), ASIC (Application specific integrated circuit), FPGA (Field Programmable Gate Array), or the like. In the main controller 26, only one processor may be provided, or a plurality of processors may be provided. In the main controller 26, processing by the processor is performed according to a program stored in the processor or storage medium. In the main controller 26, a storage medium stores a processing program used by the processor, and parameters, functions, tables, and the like used in calculations by the processor.

FIG. 3 shows the configuration of a console 20A, which is one of the consoles 20A and 20B installed in the driver's cab 7. As shown in FIG. 4 shows the configuration for transmitting signals and the like and the control configuration in the console 20A, the main controller 26, etc. shown in FIG. As shown in FIG. 3 and the like, the console 20A is provided with a console box 31 that forms an exterior and an operation lever 32 that is an operation member. The operating lever 32 is an electrical component, and is attached to the console box 31 with a portion thereof exposed to the outside of the console box 31 . A space is formed inside the console box 31 in the console 20A.

A valve controller 30 is housed inside the console box 31 . In one example of FIG. 3 , a console frame 33 is provided inside the console box 31 , and the console frame 33 is formed integrally with the console box 31 or fixed to the console box 31 . Valve controller 30 is attached to console frame 33 with bracket 35 interposed therebetween.

The valve controller 30 is a control device separate from the main controller 26, and is composed of a processing device such as a computer. Valve controller 30, like main controller 26, includes a processor and a storage medium. In the valve controller 30, only one processor may be provided, or a plurality of processors may be provided. In the valve controller 30, processing by the processor is performed according to a program stored in the processor or storage medium. Further, in the valve controller 30, a processing program or the like used by the processor is stored in a storage medium. In one example, the valve controller 30 may download the processing program used by the processor from the storage medium of the main controller 26 or the like.

As shown in FIG. 4 and the like, the hydraulic excavator 1 is provided with an electromagnetic valve 41 . The operating state of the solenoid valve 41 changes according to the power supply state to the solenoid valve 41 . In the hydraulic excavator 1, when the operating state of the solenoid valve 41 changes, the hydraulic oil supply state changes in one or more corresponding actuators including the hydraulic motor, the boom cylinder 15, and the like. Therefore, when the operating state of the solenoid valve 41 changes, the operating state of the corresponding actuator changes.

The valve controller 30 controls actuation of the solenoid valve 41 . Further, an operation for switching the operation state of the electromagnetic valve 41, that is, an operation for switching the operation state of the actuator corresponding to the electromagnetic valve 41 can be input with the operation lever 32 of the console 20A. In the driver's cab 7, for example, an operator or the like sitting on the seat 23 inputs an operation using the operation lever 32 of the console 20A. In the console 20A, the operating lever 32 is connected to the valve controller 30 via electrical wiring such as signal lines. Then, in the console 20</b>A, a signal (electrical signal) serving as an operation signal is input from the operation lever 32 to the valve controller 30 in response to the operation input from the operation lever 32 .

Also, the valve controller 30 arranged inside the console box 31 of the console 20A is connected to the solenoid valve 41 via electrical wiring. The valve controller 30 supplies power to the solenoid valve 41 through electrical wiring. The valve controller 30 controls the power supply to the electromagnetic valve 41 based on the signal from the operating lever 32 and controls the operation of the electromagnetic valve 41 . Thereby, the operation of the actuator corresponding to the solenoid valve 41 is controlled. In addition, in one example such as FIG. 4, the electromagnetic valve 41 is provided outside the console 20A. Therefore, the electrical wiring between the valve controller 30 and the solenoid valve 41 extends from the inside of the console box 31 of the console 20A to the outside of the console 20A.

Also, the valve controller 30 can communicate with the main controller 26 . 3 and 4, the valve controller 30 is connected to the main controller 26 via electrical wiring such as signal lines. The main controller 26 and the valve controller 30 then transmit signals and the like to each other through electrical wiring. That is, main controller 26 and valve controller 30 communicate with each other by wire. In one example, communication is performed between the main controller 26 and the valve controller 30 by a communication method based on CAN (Controller Area Network).

Further, the main controller 26 is arranged outside the console 20A in the driver's cab 7, and is arranged on the rear side of the cab box 6 with respect to the console 20A. Therefore, electrical wiring between the valve controller 30 and the main controller 26 extends from the inside of the console box 31 of the console 20A to the outside of the console 20A. Outside the console 20A, electrical wiring between the valve controller 30 and the main controller 26 extends to the rear side of the cab box 6 toward the main controller 26 .

Note that in one example, valve controller 30 and main controller 26 communicate wirelessly with each other. In this case, electrical wiring or the like connecting between the valve controller 30 and the main controller 26 is not provided. The valve controller 30 and the main controller 26 can then transmit wireless signals to each other.

As shown in FIGS. 3 and 4, the console 20A includes electrical components 42A to 42E as electrical components other than the operation lever 32. As shown in FIGS. 3 and 4, in the console 20A, an electrical component 42A is installed on the outer surface of the operation lever 32, and electrical components 42B to 42E are installed on the outer surface of the console box 31. FIG. Each of the electrical components 42A to 42C can be operated by an operator or the like.

In one example, the electrical component 42A is a mode switching switch. The electric component 42A can input an operation for switching the work mode of the hydraulic excavator, for example, an operation for switching the work mode between the high power mode and the normal mode. The electrical component 42B is a starter switch, and for example, an operation to start the engine, an operation to stop the engine, etc. are input. The electrical component 42C is an accelerator dial, and for example, an operation to change the number of revolutions of the engine is input.

In the console 20A, each of the electrical components 42A-42C is connected to the valve controller 30 via electrical wiring such as signal lines. In the console 20A, a signal (electrical signal) serving as an operation signal is generated in response to an operation input on each of the electrical components 42A to 42C. ) to the valve controller 30 .

The valve controller 30 transmits to the main controller 26 a signal corresponding to the operation input in each of the electrical components 42A-42C. Therefore, each of the electrical components 42A to 42C transmits a signal corresponding to the operation input to the main controller 26 via the valve controller 30 therebetween. Then, the main controller 26 is based on signals transmitted from each of the electrical components 42A to 42C via the valve controller 30, that is, signals corresponding to input of operations on the respective electrical components 42A to 42C. , the driving of the engine, and the operation of the pump that discharges the hydraulic oil supplied to the actuator described above.

Each of the electrical components 42D and 42E is connected to the main controller 26 via electrical wiring such as signal lines. Electrical wiring between each of the electrical components 42D and 42E and the main controller 26 extends from the interior of the console box 31 of the console 20A to the exterior of the console 20A.

In one example, the electrical component 42D is an indicator that displays information or the like, and a signal (electrical signal) including information to be displayed is transmitted from the main controller 26 to the electrical component 42D as a command signal (control signal). The electrical component 42E is a reader, and by bringing the tag close to the electrical component 42E, the electrical component 42E reads the information stored in the tag. Then, the electrical component 42E transmits to the main controller 26 a signal (electrical signal) including the information read from the tag. 3 and 4, each of the electrical components 42D and 42E does not transmit a signal or the like to the valve controller 30. FIG.

In one example, in the console 20A, each of the electrical components 42D and 42E is connected to the valve controller 30 via electrical wiring such as signal lines. The electrical component 42E then transmits the aforementioned signal to the main controller 26 via the valve controller 30 . The main controller 26 also transmits the above-described signals to the electrical component 42D via the valve controller 30. As shown in FIG.

Also, in one example, the console 20A is provided with electrical components other than the operation lever 32 . The electrical components transmit signals to the main controller 26 via the valve controller 30 and receive signals from the main controller 26 via the valve controller 30 . Therefore, in the console 20A, signals are transmitted to the main controller 26 via the valve controller 30, and signals from the main controller 26 are transmitted via the valve controller 30 as electrical components separate from the operation lever 32. An electrical component that at least either receives a signal may be provided.

In an example such as FIG. 3, the harness 36 extends from the inside of the console box 31 of the console 20A to the outside of the console 20A. The harness 36 includes electrical wiring connecting between the valve controller 30 and the solenoid valve 41, electrical wiring connecting between the valve controller 30 and the main controller 26, and electrical components 42D and 42E and the main controller 26. It includes electric wiring etc. connecting between.

The console 20B also includes a console box 51 and an operation lever 52, like the console 20A. A valve controller similar to the valve controller 30 may be housed inside the console box 51 of the console 20B. In this case, in the console 20B, the operating lever 52 is connected to the valve controller via electrical wiring such as a signal line. A valve controller housed inside the console 20B controls a solenoid valve different from the solenoid valve 41 based on a signal (electrical signal) input from the operating lever 52 in response to an operation input from the operating lever 52. control the power supply to the and control the operation of its solenoid valves. A valve controller housed inside the console 20B can also communicate with the main controller 26 by wire or wirelessly.

In one example, a valve controller is housed inside the console 20B, and one or more electrical components other than the operating lever 52 are provided in the console 20B. At least one of the one or more electrical components is then connected to the valve controller via electrical wiring. Electrical components connected to the valve controllers inside the console 20B transmit signals (electrical signals) to the main controller 26 via the valve controllers, or transmit signals (electrical signals) to the main controller 26 via the valve controllers. at least one of receiving a signal (electrical signal) from

In this embodiment, the valve controller 30 is housed inside the console box 31 of the console 20A. The valve controller 30 controls the power supply to the electromagnetic valve 41 based on the signal input from the operation lever 32 corresponding to the input of the operation of the operation lever 32, which is an operation member. controls the operation of Here, in a configuration where a pilot valve is provided instead of the solenoid valve 41 and the state of supply of the pilot oil to the pilot valve is changed corresponding to the operation of the operation lever 32, a hose or the like is connected from the operation lever 32 to the pilot valve. to supply pilot oil. In this embodiment, since it is configured as described above, it is not necessary to provide a hose or the like for supplying pilot oil.

Since a hose or the like for supplying pilot oil is not provided, a sufficient space for arranging the valve controller 30 is secured inside the console box 31 in the console 20A. By disposing the valve controller 30 inside the console box 31, the space inside the console box 31 is effectively utilized. By effectively utilizing the space inside the console box 31 in the console 20A, the limited space formed in the operator's cab 7 is effectively utilized.

In addition, since the valve controller 30 is provided inside the console box 31, it is possible to shorten the electrical wiring connecting between the operation lever 32 and the valve controller 30, and the operation lever 32 and the valve controller 30 are connected. It is possible to realize a configuration in which the electrical wiring connecting between is not exposed to the outside of the console 20A. As a result, damage to the electrical wiring between the operating lever 32 and the valve controller 30 is effectively prevented.

Further, since the valve controller 30 for controlling the power supply to the electromagnetic valve 41 is provided separately from the main controller 26, the accuracy in controlling the operation of the electromagnetic valve 41 is improved. By improving the accuracy of controlling the actuation of the solenoid valve 41, the accuracy of controlling the actuation of the actuator corresponding to the solenoid valve 41 is improved.

At least some of the electrical components provided in the console 20A, such as the electrical components 42A to 42C, transmit signals to the main controller 26 via the valve controller 30, or transmit signals to the main controller 26 via the valve controller 30. At least one of receiving a signal from the main controller 26 is performed. Electrical components that exchange signals with the main controller 26 via the valve controller 30 need only be provided with electrical wiring that connects to the valve controller 30 , and there is no need to provide wiring that connects to the main controller 26 . Therefore, in this embodiment, the number of electrical wirings between the console 20A and the main controller 26 is greatly reduced compared to a configuration in which all the electrical components provided in the console 20A are connected to the main controller 26. be done. As a result, damage to electrical wiring between the console 20A and the main controller 26 is properly prevented.

In particular, in the driver's cab 7, the seat 23 is arranged side by side with the console 20A in the width direction of the cab box 6, and the main controller 26 is arranged on the rear side of the cab box 6 with respect to the console 20A and the seat 23. Monkey. When the console 20A, the seat 23, and the main controller 26 are arranged as described above, the number of electric wires between the console 20A and the main controller 26 is reduced, so that the seats in the front-rear direction of the cab box 6 can be arranged. Damage to electrical wiring due to the movement of 23 is effectively prevented.

Also, by configuring valve controller 30 and main controller 26 to wirelessly communicate with each other, the number of electrical wires between console 20A and main controller 26 is further reduced. As a result, damage to the electrical wiring between the console 20A and the main controller 26 is more appropriately prevented.

In addition, with respect to electrical components that exchange signals with the main controller 26 via the valve controller 30, the electrical wiring that connects with the valve controller 30 is shortened, and the electrical wiring that connects with the valve controller 30 is shortened. The wiring is not exposed outside the console 20A. Therefore, in the console 20A, damage to the electrical wiring between each of the electrical components (42A to 42C, etc.) and the valve controller 30 is effectively prevented.

Further, by housing a valve controller similar to the valve controller 30 in the console box 51 for the console 20B, the same functions and effects as those described above can be obtained.

In the above-described embodiment and the like, the hydraulic excavator 1 has been described, but the configuration of the console 20A and the like, and the configuration of the console 20A and the main controller 26 and the like for transmitting signals and the like are applicable to constructions other than the hydraulic excavator 1. It is also applicable to machines. That is, as long as it is a construction machine in which an operator's cab is formed inside the cab frame of the upper revolving structure, the same configuration as that of the above-described embodiment can be applied.

It should be noted that the present invention is not limited to the above-described embodiments, and can be variously modified in the implementation stage without departing from the gist of the invention. Moreover, each embodiment may be implemented in combination as much as possible, and in that case, the combined effect can be obtained. Furthermore, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

DESCRIPTION OF SYMBOLS 1... Hydraulic excavator, 2... Lower running body, 3... Upper revolving body, 6... Cab box, 7... Driver's cab, 8... Work device, 20A, 20B... Console, 23... Seat, 26... Main controller, 30... Valve Controller 31 Console box 32 Operation lever 41 Solenoid valve 42A to 42E Electrical components.

Claims (4)

a cab box forming an operator's cab therein;
a solenoid valve whose operating state changes according to the power supply state;
A console installed in the operator's cab, the console comprising a console box forming an exterior, and an operation member capable of inputting an operation for switching the operating state of the solenoid valve;
is housed inside the console box and controls the supply of power to the solenoid valve based on a signal input from the operating member corresponding to the input of the operation on the operating member; a valve controller for controlling the actuation of
A construction machine comprising: further comprising a main controller arranged outside the console box and capable of communicating with the valve controller;
The console includes electrical components separate from the operation member,
The electrical component performs at least one of transmitting a signal to the main controller through the valve controller and receiving a signal from the main controller through the valve controller.
The construction machine of Claim 1. further comprising a seat arranged in the driver's cab side by side with the console in the width direction of the cab box;
The main controller is arranged on the rear side of the cab box with respect to the console and the seat in the driver's cab.
The construction machine of claim 2. an upper revolving body comprising the cab box and a revolving body frame on which the cab box is installed;
a lower running body to which the upper revolving body is rotatably connected from a vertical upper side;
4. The construction machine of any one of claims 1-3, further comprising: