JP2008008122A - Monitor for construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display a rear view image in a wide range without lowering a front visibility performance in a monitor mounted on a construction machinery. <P>SOLUTION: A control panel 30 and a large size monitor 31 having a wide screen are arranged at a side face part of an operating chamber 14. A rear view image which is photographed by a monitor camera is displayed on the monitor 31 so as to confirm a rear view of the machine body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a monitor for a construction machine, and more particularly to a monitor that displays a rear view image captured by a surveillance camera attached to the rear part of a machine body.

  Conventionally, in construction machines such as a hydraulic excavator, the safety of the rear of the fuselage is ensured by a turning alarm such as a horn or a back buzzer during turning or reverse. However, the turning alarm and the back buzzer notify a person around the aircraft that the vehicle is turning or moving backward, and the surrounding people are not always separated from the aircraft to ensure safety. The presence or absence of an obstacle is confirmed by the operator's vision. Obstacles on the side of the aircraft can be easily confirmed with a side mirror or the like, but it is difficult to confirm the obstacles behind the aircraft.

2. Description of the Related Art In recent years, there has been known a construction machine in which a camera for monitoring the periphery is attached to the rear part of an aircraft, and a rear view image captured by the camera is displayed on a monitor provided in a driver's cab (for example, Patent Document 1). reference).
JP 2005-155274 A

  The invention described in Patent Document 1 includes a sensor that detects the remaining amount of fuel supplied to the engine, the engine coolant temperature, and the hydraulic oil temperature, and vehicle status information output from each sensor is provided in a monitor provided in the cab. The monitor display is displayed and can be switched from the vehicle status information to a rear view image captured by a camera by operating a changeover switch provided on the work lever. The monitor is disposed at a position in front of the operator or at an obliquely forward position.

  In the case of displaying a rear view image, there is a demand to display a wide range as much as possible. Therefore, the size of the monitor is increasing. However, since the monitor is disposed at the front position or the oblique front position, the front view performance is deteriorated, so there is a limit to the enlargement.

  Therefore, a technical problem to be solved in order to display a rear view image in a wide range without deteriorating the front view performance in the monitor mounted on the construction machine arises, and the present invention solves this problem. The purpose is to do.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is characterized in that an upper swing body is mounted on a lower traveling body so as to be rotatable, and one front portion of the upper swing body is provided. In the construction machine provided with a cab in the rear and provided with a counterweight, mounted on the counterweight with a monitoring camera, and displayed on the monitor provided in the cab a rear view image captured by the monitoring camera, Provided is a monitor for a construction machine, wherein the monitor is arranged in a side part of a cab.

  According to this structure, since the monitor is arrange | positioned in the side part in a driver's cab, a monitor can be enlarged without reducing a forward visibility performance.

  According to a second aspect of the present invention, there is provided the construction machine monitor according to the first aspect, wherein the monitor is disposed on a control panel provided in a side portion of the cab and has a wide screen. .

  According to this configuration, since the monitor disposed on the control panel is a wide screen, the rear view image can be displayed in a wider range.

  In the present invention, since the monitor is arranged in the side part of the cab, the rear view image captured by the monitoring camera can be displayed in a wide range without obstructing the front view even if the monitor is enlarged. Furthermore, since the monitor has a wide screen, all directions on the rear side of the aircraft can be displayed, which can further contribute to ensuring safety.

  Hereinafter, the monitor of the construction machine according to the present invention will be described with reference to preferred embodiments. In a monitor mounted on a construction machine, in order to achieve the object of displaying a rear view image in a wide range without deteriorating the front view performance, the present invention is arranged by arranging the monitor in the side part of the cab. It was realized.

  FIG. 1 shows a hydraulic excavator 10 as an example of a construction machine, and an upper swing body 13 is mounted on a lower traveling body 11 via a swing mechanism 12 so as to be rotatable. The upper swing body 13 is provided with a cab 14 on one side of the front, and a counterweight 15 is attached to the rear. In addition, a boom 16 is attached to the front center portion of the upper swing body 13 so as to be able to be raised and lowered, an arm 17 is attached to the tip of the boom 16 so as to be able to turn up and down, and a bucket 18 is attached to the tip of the arm 17.

  A monitoring camera 20 is attached to the center of the upper surface of the counterweight 15, and a rear view image captured by the monitoring camera 20 is sent to the cab 14 by a cable or wireless communication and provided inside the cab 14. It is displayed on the monitor described later. Although a detailed description of the monitoring camera 20 is omitted, the monitoring camera 20 is attached so as to be able to turn left and right and up and down by a remote operation by an operator in the cab 14. However, the state fixed toward back may be sufficient.

  FIG. 2 shows the inside of the cab 14, console boxes 22, 23 are provided on the left and right sides of the seat 21, and operating levers 24, 25 for working such as booms and arms are provided on the console boxes 22, 23, front, rear, left, right It protrudes so that it can swing in the direction. On the front floor of the seat 21, traveling pedals 26 and 27 for driving and controlling the left and right crawlers are provided so as to be able to be depressed in the front-rear direction, and operating levers 28 and 29 for traveling are provided on the respective pedals 26 and 27. It is attached. A control panel 30 is provided on the right side of the seat 21.

  FIG. 3 is an enlarged view of the control panel 30, and the direction indicated by the arrow is the front direction of the aircraft. The control panel 30 is provided with a monitor 31 formed of LEDs and various switches 32. The monitor 31 displays various vehicle status information such as the remaining amount of fuel, the temperature of engine cooling water, and the temperature of hydraulic fluid, and the display contents are switched by the operation of the switch. A rear view image is displayed.

  Here, since the monitor 31 is provided in the side part in the cab 14, the monitor 31 can be made a large screen without obstructing the front view even if it becomes a large screen compared to the conventional monitor. The rear visual field image captured by the monitoring camera 20 can be displayed in a wider range than the conventional monitor.

  The monitor 31 has a wide screen whose horizontal dimension is about twice or more than the vertical dimension of the screen. In general, there are few obstacles above the aircraft, and the display range in the vertical direction of the monitor 31 is sufficient to some extent. Therefore, by forming the monitor 31 on a wide screen with a wide left and right display range, it is possible to display all directions behind the aircraft.

  Thus, by arranging the wide screen monitor 31 in the side part of the cab 14, even if the monitor 31 is enlarged, the front view is not hindered, and a wide range of the rear view image captured by the monitoring camera 20 can be obtained. In addition, the wide screen makes it possible to display all directions from the rear of the aircraft, which can contribute to further ensuring safety.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

1 is a side view of a hydraulic excavator to which the present invention is applied. Explanatory drawing of the inside of the driver's cab which has arrange | positioned the monitor which concerns on this invention. The enlarged view of the monitor which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Excavator 14 Driver's cab 20 Surveillance camera 30 Control panel 31 Monitor 32 Various switches

Claims (2)

An upper revolving unit is mounted on the lower traveling unit so as to be able to turn, and a cab is provided on one side of the front of the upper revolving unit and a counterweight is provided at the rear, and a monitoring camera is attached to the counterweight, and the monitoring is performed. In a construction machine configured to display a rear view image captured by a camera on a monitor provided in the cab,
A monitor for a construction machine, characterized in that the monitor is arranged in a side part of a cab. 2. The construction machine monitor according to claim 1, wherein the monitor is disposed on a control panel provided in a side portion of the cab and has a wide screen.

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