JP2592085Y2 - Surveillance camera equipment for hydraulic excavators - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device which is provided with a surveillance camera in front of or behind a hydraulic excavator and which can monitor the situation in a cab.

[0002]

2. Description of the Related Art Conventionally, a surveillance camera is provided at the rear of a vehicle,
2. Description of the Related Art A camera device for monitoring a blind spot of an operator in a cab is known. On the other hand, in the case of a hydraulic shovel, it is necessary to monitor the work state such as excavation in front of the attachment, and a configuration in which the excavator is attached to the tip of a boom or an arm is conceivable. If the arm moves frequently, there is a disadvantage that it is not possible to stably photograph the work place, and no effective surveillance camera device has been proposed so far.

[0003]

[Problems to be solved by the invention] This invention was created in view of the above circumstances, and the main problem is that a front surveillance camera for monitoring the work of the tip of the attachment of the excavator is provided on the vehicle body to perform the work. Is to provide a surveillance camera device that can monitor the situation. Another object of the present invention is to provide a surveillance camera device for a hydraulic shovel in which a rear surveillance camera is provided together with a front surveillance camera so that a blind spot in the rear can be monitored together with work.

[0004]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides the following: (a) provided on the left and right sides of the boom at the lower part of the boom of a front attachment pivotally mounted on a hydraulic shovel. A front storage chamber is formed in the vehicle body frame between the pair of raised and lowered cylinders, (b) a front monitoring camera for photographing the front is provided in the front storage chamber, (c) inside the pair of right and left raised cylinders. (D) A technology that can display the image of the camera on the display in the driver's cab so that the hydraulic lines arranged respectively do not appear in the front monitoring camera. Have taken strategic steps. In addition, in the invention of claim 3, in addition to the above configuration, (e) a rear storage chamber is formed at the rear center of the counterweight at the rear of the hydraulic shovel, and (f) rear monitoring for photographing the rear of the rear storage chamber. A camera is provided. (G). A technical measure is taken such that an image of one of the above cameras or an image of both cameras is displayed on a display in the driver's cab in a switchable manner.

[0005]

Since the front surveillance camera is provided at the lower part of the boom, it is possible to monitor the operation of the excavation groove or the like performed at the tip of the front attachment. Further, the hydraulic pipes provided in the pair of left and right boom cylinders for the boom are moved to the left and right so that the center is empty, so that they do not interfere with the photographing of the front monitoring camera. Since the image of the front monitoring camera is displayed on a display provided in the driver's cab, the operator can work while checking the excavation state. When a rear monitoring camera is provided, the blind spot behind the excavator can be monitored. Further, the front monitoring camera and the rear monitoring camera are both stored in the storage room and do not protrude outward, so that they do not come off or be damaged during traveling.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the surveillance camera device for a hydraulic shovel of the present invention will be described below with reference to the drawings. This surveillance camera device comprises a system having a front surveillance camera 1 and a rear surveillance camera 2. As shown in FIGS. 1 to 4, the front monitoring camera 1 includes a pair of up-and-down cylinders 5 provided on the left and right sides of the boom 4 directly below the boom 4 of the front attachment pivotally mounted on the hydraulic excavator 3. , 6 form a front storage chamber 10 in the lower frame 7 of the upper swing body.

In this embodiment, the front storage chamber 10 is provided with a frame 8 through which the hydraulic pipelines 5a, 6a of the up-and-down cylinders 5, 6 are inserted.
Project upward from the opening 8a. That is, the brackets of the undulating cylinders 5 and 6 are fixed to the distal end of the lower frame 7. In addition, an inclined frame 8 is provided, in which the bracket 4a for pivotally mounting the boom 4 is fixed, and an opening 8a is provided below the inclined frame 8 in such a manner that the bracket 8a is gradually inclined rearward and rises behind the bracket. The hydraulic pipes 5a and 6a of the up-and-down cylinders 5 and 6 are inserted and rise up, and are connected to the left and right up-and-down cylinders 5 and 6, respectively.

The hydraulic pipes 5a, 6a are located close to the respective up-and-down cylinders 5, 6, and are arranged such that a gap is formed at an intermediate portion. The front storage room 10 is arranged in the intermediate gap. Here, the front storage room 10
Consists of a casing 10a and a supporting leg 10b that supports the casing 10a, and the supporting leg 10b is fixed to the lower frame 7 of the upper swing body.

The casing 10a has a box shape, and has a lid 11 which is pivotally attached at the lower part to the front front and can be opened and closed. In FIG. 2, R1 is a cover 11 on the casing 10a.
R2 is a locking portion for locking the opened lid portion 11c. The front monitoring camera 1 includes the casing 1
0a is provided via a holding portion 1a.

The holding portion 1a has an L-shape in this embodiment, and its lower end is pivotally attached to the casing 10a so that the angle can be adjusted vertically within a predetermined range. Adjustably connected. Since the front surveillance camera 1 is configured as described above, it is possible to photograph the digging groove formed by the front attachment from the front.

Next, the rear monitoring camera 2 is shown in FIGS.
As shown in the figure, the rear excavator 3 is provided in a rear storage chamber 20 formed in a counterweight 9 provided in a rear portion of the excavator 3, and is disposed substantially at the center together with a rear light L. The rear monitoring camera 2 has a rear portion pivotally mounted on a bracket 2a fixed to a counterweight so that the angle can be adjusted vertically. The rear surveillance camera 2 and the front surveillance camera 1 transmit their respective video signals to a display (not shown) in the cab, and in the cab, one of the images is displayed according to an operator's selection with a selector. can do.

Further, the display may be configured to display both images in parallel. In the above embodiment, the configuration in which both the front monitoring camera and the rear monitoring camera are provided is shown. However, in the present invention, a configuration in which only the front monitoring camera is provided may be used. In this embodiment, the angle of each camera is adjusted in the vertical direction. However, the camera may be held in a universal joint so that the shooting position can be displaced in the horizontal direction or in the free direction. Further, the position of the camera may be remotely controlled from the driver's cab. In other words, it is needless to say that various design changes can be made without changing the gist of the present invention.

[0013]

[Effect of the Invention] According to the invention described above, the work site on the extension of the boom can be photographed from the front at a low position with the front monitoring camera, so that the excavation trench which could not be seen from the driver's cab in the past. Etc. can be checked,
Work efficiency can be improved. Furthermore, if a rear monitoring camera is provided, the rear in a blind spot can be monitored, and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of a hydraulic excavator.

FIG. 2 is a side sectional view showing a mounting structure of the front monitoring camera.

FIG. 3 is a front view of the same.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view of the rear monitoring camera.

FIG. 6 is a side view of the same.

FIG. 7 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front monitoring camera 2 Rear monitoring camera 3 Hydraulic excavator 4 Boom 5, 6 Undulating cylinder 5a, 6a Hydraulic piping 7 Lower frame 8a Opening 11 Front storage room 20 Rear storage room

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-60319 (JP, A) JP-A-1-165827 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02F 9/26

Claims (4)

(57) [Scope of request for utility model registration] 1. A front storage chamber is formed in a body frame between a pair of up-and-down cylinders provided on the left and right of the boom at a lower portion of a boom of a front attachment rotatably mounted on a hydraulic excavator. A front surveillance camera for photographing the front is provided in the storage room, and the hydraulic pipes respectively arranged inside the pair of left and right undulating cylinders are arranged with a gap between the respective hydraulic pipes so as not to be photographed by the front surveillance camera. A surveillance camera device for a hydraulic shovel, wherein an image of the camera can be displayed on a display in a driver's cab. 2. A front storage chamber protrudes upward from an opening of a vehicle body frame passing through a hydraulic line of an up-and-down cylinder, and an openable / closable lid is provided on a front face of the front storage chamber. The surveillance camera is mounted to be pivotable up and down in the front storage room.
A surveillance camera device for a hydraulic shovel according to item 1. 3. A front storage chamber is formed in a vehicle body frame between a pair of up-and-down cylinders provided on the left and right sides of the boom at a lower portion of a boom of a front attachment pivotally attached to a hydraulic excavator so as to be able to move up and down. A front surveillance camera for photographing the front is provided in the storage room, and the hydraulic pipes respectively arranged inside the pair of left and right undulating cylinders are arranged with a gap between the respective hydraulic pipes so as not to be photographed by the front surveillance camera. A rear storage chamber is formed in the center of the rear of the counterweight at the rear of the hydraulic shovel, and a rear monitoring camera for photographing the rear is provided in the rear storage chamber. A surveillance camera device for a hydraulic shovel, wherein an image of a camera or an image of both cameras can be displayed. 4. A front storage chamber protrudes upward from an opening of a vehicle body frame that passes through a hydraulic pipeline of an up-and-down cylinder, and a lid that can be opened and closed is provided at the front of the front storage chamber. surveillance cameras and rear monitoring camera, forward yield
The surveillance camera device for a hydraulic shovel according to claim 3, wherein the surveillance camera device is mounted so as to be vertically pivotable in a delivery room and a rear storage room .