JPH0659399U - External display in working mode - Google Patents

Abstract

(57) [Summary] [Purpose] An operator can confirm that an angle-free state has been reached without relying on the operator's signal. [Structure] In a handling work machine 2 of a self-holding gripping machine 1, a solenoid valve 5 is provided downstream of a main operation valve 4 for an angle cylinder 3 of the work machine 2, and a solenoid valve 5 is provided in a cab 6 for a switch 7 Is turned on to switch the solenoid valve 5 to the angle free position,
Both sides of the undulating boom 8 of the gripping machine 1 and the cab 6
The angle free lamps 9, 10 and 11 provided inside are also turned on at the same time. [Effect] The operator can determine whether or not the vehicle is in the angle-free state by not turning on the operator's signal by turning on the lamps on both sides of the boom and the cab, so that the safety can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a working machine of a self-propelled gripping machine, and more particularly, to an external display device of a working mode for notifying an angle free state of the working machine to the outside.

[0002]

[Prior art]

 Generally, a self-propelled gripping machine has a swinging body provided on the upper part of a lower traveling body with a base end of an undulating boom axially attached, and an arm axially attached to the tip end of the boom. Various work machines can be installed. FIG. 4 and FIG. 5 show a case where the handling device 21 is attached to the self-propelled gripping machine 20 as an example. This handling device 21 is attached to the tip of an arm 24 connected to a boom 23 that can be raised and lowered provided on an upper revolving structure 22, and has a rotating mechanism using a hydraulic motor as a drive source. 25, a clamp mechanism 26 attached to the rotated side of the rotating mechanism 25, a cylinder 27 that swings the clamp mechanism 26 in the left-right direction, and the like. To operate the rotating mechanism 25 and the clamp mechanism 26 of the handling device for the gripping machine as described above, the twist of the left and right operation by the mono lever (the left and right rotation of the load) and the angle of the forward and backward operation (the forward and backward movement of the load with respect to the center of the vehicle). ), Using the clamping mechanism 26 of the gripping machine 20 described above, a gripping object 28 such as a long H-steel gripped in a direction perpendicular to the forward direction of the vehicle is attached to the work object at the work site. When mounting on, the operator other than the operator faces the object to be gripped, and the clamp mechanism is set in the angle free state to finely adjust the angle of the object to be gripped by the operator. The angle-free status display was made by a lamp installed in the cab, which was operated by an operator to inform the operator that the load is now in the angle-free status.

[0003]

[Problems to be solved by the device]

 However, this angle swing function is delicately aligned in order to attach the gripping object to the mounting object, and more specifically, the H-steel is gripped and the cross beam to be bridged to the undercut of the building is bolted. Therefore, alignment is necessary. Therefore, as described above, an operator other than the operator is positioned near an object to be gripped in an angle-free state to perform positioning. Here, the angle operation generally moves a long gripping object such as H steel back and forth, and the angle operation with a worker near was extremely dangerous. For example, when the operator calls the operator to adjust the position of the H steel with the gripped object in the angle free state and tries to make the adjustment, it is recognized that the angle operation is still necessary. Even if the operator gives a "wait" signal to act on the angle, if the operator misses this signal or fails to hear it, the worker near the grasped object may hit the rotating grasped object or be caught. become. Therefore, the operator signaled to the operator that he was in the angle-free state (lighting of the lamp in the cab) and that the angle-free state was released (by gesture, gesture or voice). There was a possibility of overlooking, and there was a problem in terms of safety.

In view of the above, the present invention provides an external display device for a working mode, which enables a worker to confirm that an angle-free state is reached without relying on a signal from an operator. The purpose was to eliminate the drawbacks of the prior art.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a handling working machine for a self-holding gripping machine, in which a solenoid valve is provided in series with a main operating valve for an angle cylinder of the working machine, and the solenoid valve is provided in a cab. When the switch is turned ON, the solenoid is energized to switch the solenoid to the angle free position, and at the same time, both side surfaces of the boom on which the gripping machine is undulated and the angle free lamps provided in the cab are simultaneously turned on. . Of course, in addition to the lamp, it is also possible to give a warning by a buzzer sound.

[0006]

[Action]

 According to the above configuration, the worker near the gripped object can check the angle-free state by lighting the both sides of the boom in addition to lighting the inside of the cab, so rely on the operator's signal. You can work without

[0007]

【Example】

 FIG. 1 is an electric and hydraulic circuit diagram showing an embodiment of an external display device of a working mode according to the present invention, and FIG. 2 is an external plan view of a self-propelled gripping machine provided with the external display device of FIG. 1, 3 is a side view of FIG.

The present invention provides a handling work machine 2 of a self-holding type gripping machine 1 shown in FIGS. 2 and 3, in which a solenoid valve 5 is provided in series with a main operation valve 4 for an angle cylinder 3 of the work machine 2. The solenoid valve 5 is energized by turning on a switch 7 provided in the cab 6 to switch to an angle free position, and at the same time, both sides of the boom 8 of the gripping machine 1 and the angle free provided in the cab 6 are provided. -The lamps 9, 10 and 11 are also configured to be turned on at the same time.

The main operation valve 4 shown in FIG. 1 is for an angle, and a main operation valve for a twist and a swivel motor which are not directly related to the present invention are omitted. Oil is guided to the main operation valve 4 through a hydraulic circuit 13 connected from a hydraulic pump 12. Further, the main operation valve 4 is a three-position valve, and the normal operation is operated by a pilot pressure proportional control valve (not shown). The bottom side 3a of the angle cylinder 3 is located at the left and right of the neutral n position. , Or there are two a, b positions that supply oil to either rod side 3b. Further, a solenoid valve 5 is provided on the downstream side of the main operation valve 4, and the solenoid valve 5 has a position c for supplying oil to either the bottom side 3a or the rod side 3b of the angle cylinder 3 and an angle free valve. Position d is provided. This angle free position d corresponds to the floating position in the case of the lift of the bulldozer. When the solenoid valve 5 is switched to this free position d, the angle side 3a and the bottom side 3a of the angle cylinder 3 are connected. When the handling work machine 2 receives an external force, the handling work machine 2 can move in accordance with the external force because the rod side 3b is in communication with each other, so that fine adjustment in the angle direction can be easily performed. The switching of the solenoid valve 5 to the angle free position d is performed by energizing the electric circuit 15 when the switch 7 provided in the cab 6 is turned on. In addition to the angle free lamp 11 provided in the cab 6, the electric circuit 15 is also connected to the angle free lamps 9 and 10 on both sides of the boom 8. If necessary, the buzzer 14 can be energized to issue an alarm. In FIG. 1, 16 is a battery. 2 and 3 have the same structure as those shown in FIGS. 4 and 5, and are different only in that angle free lamps 9 and 10 are mounted on the left and right sides of the boom 8, respectively.

Next, the operation will be described. The operator operates the solenoid valve 5 by energizing the electric circuit 15 by turning on the switch 7 of the main operating valve 4 so that the solenoid valve provided on the downstream side of the main operating valve 4 for the angle. 5 is switched to angle free position d. At the same time, the angle free lamp 11 inside the cab 6 and the angle free lamps 9 and 10 on both sides of the boom 8 are turned on. In addition, the buzzer 14 gives an alarm if necessary. Therefore, the worker who approaches the handling work machine can proceed with the work while confirming the lighting. If these angle-free lamps 9, 10, 11 are turned off, it is considered dangerous and it is possible to quickly evacuate from the site of the handling machine, regardless of the operator's signal.

[0011]

[Effect of device]

 INDUSTRIAL APPLICABILITY As described above, the present invention is a handling work machine for a self-holding type gripping machine, in which a solenoid valve is provided on the downstream side of a main operation valve for an angle cylinder of the work machine, and the solenoid valve is provided in a cab. Since the main operating valve is switched to the angle free position by turning on the power by turning on, both side surfaces of the boom on which the gripping machine is undulated and the angle free lamps provided in the cab are simultaneously turned on. The operator can judge whether or not the vehicle is in the angle-free state by not turning on the operator's signal, by checking the lights on both sides of the boom and the cab so that the safety can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of an electric and hydraulic circuit showing an embodiment of an external display device of a working mode according to the present invention.

FIG. 2 is an explanatory plan view of a self-propelled gripping machine provided with an external display device of the present invention.

FIG. 3 is an explanatory diagram showing a side surface of FIG.

FIG. 4 is an explanatory plan view of a self-propelled gripping machine equipped with a conventional handling device.

5 is an explanatory diagram of a side surface of FIG. 4. FIG.

[Explanation of symbols]

1 Self-holding gripping machine 7 Switch 2 Handling work machine 8 Boom 3 Angle cylinder 9, 10, 11 Angle free lamp 4 Main operation valve 5 Solenoid valve 6 Cab

Claims (1)

[Scope of utility model registration request] 1. A handling working machine for a self-holding gripping machine, wherein a solenoid valve is provided in series with a main operating valve for an angle cylinder of the working machine, and the solenoid valve is energized by turning on a switch provided in a cab. An external display device for a working mode, characterized in that the solenoid is switched to an angle free position and at the same time an angle free lamp provided on both side surfaces of a boom undulating the gripping machine and in a cab are turned on. ..