JP3020083B2 - Hydraulic excavator attachment and detachment aid for attachments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment / detachment assisting device for an attachment of a hydraulic shovel excavator, and more particularly, to easily attach / detach various attachments to be attached to an arm tip of a hydraulic shovel excavator. The present invention relates to an attachment / detachment assisting device for an attachment as described above.

[0002]

2. Description of the Related Art At the tip of an arm of a hydraulic excavator such as a backhoe, attachments such as buckets and grapples can be attached and detached, thereby enabling various operations such as excavation and demolition of buildings. Attachment and detachment of this attachment are performed by overlapping an arm tip tool with an attachment hole provided in the attachment, and inserting or pulling a pin into or out of the attachment hole.

[0003]

However, the conventional attachment / detachment method as described above has the following problems. In other words, when attaching / detaching the attachment, which is a heavy object, finely adjust the position of the arm tip while the attachment is stationary, but it is difficult to adjust the position, and the position of both mounting holes will be slightly displaced. Alternatively, the pull-out operation is performed by hitting a pin with a large hammer. This work is a major bottleneck in performing quick construction, especially in the case of frequent replacement of attachments. In addition, the attaching and detaching operation requires at least two workers, an operator who operates a backhoe and the like and an operator who inserts and removes pins.

[0004]

The object of the present invention is to solve the above problems,
It is an object of the present invention to provide an attachment / detachment assisting device for an attachment of a hydraulic shovel excavator in which a single operator can easily and quickly attach or detach various attachments to or from an arm tip of a backhoe or the like.

[0005]

Means for Achieving the Object Means of the present invention taken to achieve the above object are as follows. That is, the present invention is a attachment for detachable auxiliary device of a hydraulic shovel type excavator, a fixture for attachment to the arm tip portion of the hydraulic excavator based excavator, rotatably mounted to the fixture, the attachment and detaching device for detaching the, a rotation driving device for rotating the attachment apparatus, the oil line provided with a swivel joint for deriving the said detachable unit side, the detachable unit,
A fixing fitting member for fitting on one of the fixing pin attachment comprises a movable fitting device for fitting to the other fixed pin attachment, and drive means for moving the movable engagement member, and The mounting fixture and the attachment / detachment device are
Each has a pin insertion tool and is fixed between the pin insertion tools.
An attachment / detachment assisting device for an attachment of a hydraulic shovel excavator, wherein a pin can be attached .

[0006]

The attachment / detachment assisting device is attached to the arm tip of a hydraulic shovel excavator such as a backhoe via a fixture. The backhoe is operated to be positioned near an attachment such as a bucket, and the fixing fitting of the attaching / detaching device is fitted into one fixing pin of the attachment. The movable fitting is moved by the driving means (generally moves forward and backward), fitted into the other fixed pin of the attachment, and the two fixed pins are attached by the two fittings by stretching or pinching.

When the attachment is removed, the movable fitting is moved by the driving means in the opposite direction to release the tension or the clamping by the two fittings. Since the attachment / detachment device can be rotated by the rotation drive device, efficient work such as changing the direction of a bucket as an attachment to be attached or rotating a grapple to tear off a reinforcing bar or the like can be performed.

[0008] Further, the mounting tool and the attaching / detaching device are each provided with a pin.
It has an insertion tool, and a fixed pin can be attached between the pin insertion tools.
So that you can turn the attachment
If it is not necessary to turn
If a fixed pin is attached, excessive force can be applied to each part of the rotary drive
It is possible to prevent breakage and breakdown without any damage.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a front view showing an embodiment of the attachment / detachment assisting device according to the present invention, and FIG. 2 is a right side view of the attachment / detachment assisting device shown in FIG. Reference numeral A denotes an attachment / detachment assisting device, which is provided with a fixture 1 for attaching to a tip end of an arm of a hydraulic shovel excavator such as a backhoe. The mounting fixture 1 includes a substrate 10, and mounting plates 11 and 12 are provided upright on the upper surface thereof in parallel at a required interval.

Pin mounting holes 13 are provided at three places on the upper portions of the mounting plates 11 and 12. Further, a pin insertion tool 14 is provided on the outside of the mounting plates 11 and 12 of the substrate 10 so as to penetrate vertically. The rotation drive device 2 is provided on the substrate 10. Although not shown, the rotary drive device 2 includes a hydraulic motor, and a gear device formed by a combination of a circular rack gear and a pinion gear, and has a structure in which the detachable device 3 rotatably attached to the lower portion of the substrate 10 is rotated.

The attachment / detachment device 3 has a rotating substrate 30.
Although not shown, a swivel joint is provided at the center of rotation of the rotating substrate 30. The swivel joint 31 leads out an oil line for driving a hydraulic cylinder of the attachment / detachment device 3 and a hydraulic cylinder of the attachment, which will be described later.

A pin insertion tool 31 is provided on the rotating substrate 30 so as to penetrate vertically in correspondence with the pin insertion tool 14 provided on the substrate 10. A fixing pin P can be attached to the pin insertion tools 14 and 31 as shown in FIG. In other words, when the attachment does not need to be rotated during the work, or when the work is particularly severe, if the fixing pin P is attached, no excessive force is applied to each part of the rotary drive device 2 to prevent breakage or failure. it can.

On the lower surface of the rotating substrate 30, bearing plates 32 and 33 are provided vertically in parallel at a required interval. A fixed fitting 34 in the form of a vertically divided circular tube is attached to the bearing plates 32 and 33 at the lower right side in FIG. 1 with the open side facing outward. The inner diameter of the fixed fitting 34 is set to a size that can be fitted to a fixed pin provided on the attachment. The length of the fixed fitting 34 is the length of the bearing plate 32,
It is set slightly wider than the interval of 33.

Above the fixed fitting 34 of the bearing plates 32 and 33, a base of a hydraulic cylinder S as a driving means is rotatably supported via a shaft pin 301. Also, inside the bearing plates 32 and 33, movable plates 35 and 36 are rotatably supported at required intervals via a shaft pin 302 near the left end in FIG. At the lower part of the movable plates 35 and 36, a movable fitting 37 in the shape of a vertically divided circular tube is attached with the open side facing outward. The inner diameter and length of the fixed fitting 37 are set to be the same as those of the fixed fitting 34.

The rod head of the hydraulic cylinder S is rotatably mounted on the movable plates 35 and 36 slightly below the shaft pin 302 via a shaft pin 303. Also,
At the left ends of the bearing plates 32 and 33, a pin insertion member 304 is provided so as to pass therethrough. The movable plates 35 and 36 are provided with a pin hole 305 which is concentric with the pin insertion tool 304 and the shaft pin 302. The pin insertion member 304 and the pin hole 305 are set so as to overlap each other when the hydraulic cylinder S operates and the movable fitting member 37 moves and is attached to the attachment, and prevents the attachment from dropping off through the fixing pin. And ensure safety.

(Operation) FIG. 3 is an explanatory diagram showing a use state. The operation of the present embodiment will be described with reference to FIGS. Attach the attachment / detachment assisting device A to the tip of the arm of the backhoe.
Installed via Referring to FIG.
1 is attached to the inner pin mounting hole 13 by a fixing pin 43, and the link 42 is connected to the left pin mounting hole 13 in FIG.
Is attached to the fixing pin 44. The fixing pin P shown in FIG. 1 has been removed, and the attaching / detaching device 3 can be rotated by the rotation driving device 2. In addition, the movable fitting 37 is retracted as shown by the solid line in FIG.
Two lines of oil lines are connected to the swivel joint, one of which is connected to a hydraulic cylinder S of the attaching / detaching device 3, and the other is connected to a hydraulic cylinder (not shown) of a bucket B described later.

By operating the arm 41 of the backhoe, the attachment / detachment assisting device A is positioned near the upper portion of the bucket B as the attachment. Then, the arm 41 is finely adjusted, and the fixing fitting 34 of the attachment / detachment device 3 is fitted into one fixing pin 52 on the upper part of the fitting 5. Next, the hydraulic cylinder S is actuated, the movable plates 35 and 36 are pushed by the rods and moved as indicated by the imaginary lines in FIG. 1, the movable fitting 37 is fitted into the other fixed pin 51, and the two fittings are used. Attach with both fixing pins stretched.

Further, a fixing pin (not shown) is mounted on the pin mounting tool 304 and the pin hole 305 which overlap each other, so that the rod is loosened and the attachment / detachment assisting device A does not fall off. Thereby, since the attaching / detaching device 3 is rotatable by the rotary drive device 2, the attached bucket B can be easily changed in direction, so that efficient work can be performed. When replacing the bucket B with another attachment or removing it after the work is completed, the hydraulic cylinder S is operated to retract the movable fitting 37 in the opposite manner to release the tension by the two fittings. I do. It should be noted that the present invention is not limited to the illustrated embodiment,
Various modifications are possible within the scope of the claims.

[0019]

The present invention has the above configuration and has the following effects. That is, if the attachment / detachment assisting device is attached to the arm tip of a hydraulic shovel excavator such as a backhoe via a fixture, the backhoe is operated near the attachment when the attachment is attached to the attachment / detachment assisting device. Position, fit the fixed fitting of the attachment / detachment device into one fixed pin of the attachment, and move the movable fitting by the driving means to fit it into the other fixed pin, and stretch or pinch both fixed pins with both fittings It can be mounted by doing. Further, when the attachment is removed, the movable fitting may be moved by the driving means in the opposite direction to release the tension or pinching by the two fittings. As described above, it is possible to provide an attachment / detachment assisting device for an attachment of a hydraulic shovel excavator in which a single operator can easily and quickly attach or detach various attachments to or from an arm tip such as a backhoe. In addition, mounting fixtures and attachment / detachment devices
Each has a pin insertion tool, and between the pin insertion tools
Fixing pins can be attached so that
When there is no need to rotate the touchment, especially when working
If the fixing pin is attached in case of severe
No excessive force is applied to each part, and damage and breakdown can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an attachment / detachment assisting device according to the present invention.

FIG. 2 is a right side view of the attachment / detachment assisting device shown in FIG.

FIG. 3 is an explanatory diagram showing a use state.

[Explanation of symbols]

 A Attaching / detaching auxiliary device for attachment 1 Mounting device 10 Substrate 11, 12 Mounting plate 13 Pin mounting hole 14 Pin insertion device 2 Rotary driving device 3 Detachment device 30 Rotating substrate 31 Pin insertion device P Fixing pin 32, 33 Bearing plate 34 Fixed fitting Fittings 301, 302, 303 Shaft pin S Hydraulic cylinder 35, 36 Movable plate 37 Movable fitting tool 304 Pin insertion tool 305 Pin hole

Claims (1)

(57) [Claims] 1. A attachment for detachable auxiliary device of a hydraulic shovel type excavator, rotary excavator system excavator fixture for attachment to the arm tip of the (1), to the fixture (1) An attachment / detachment device (3) that is attached so as to be attachable / detachable to the attachment, a rotation drive device (2) that rotates the attachment / detachment device (3) , and an oil line for leading the oil line to the attachment / detachment device (3) . A swivel joint, wherein the attachment / detachment device (3) includes a fixed fitting (34) for fitting into one fixed pin of the attachment, and a movable fit for fitting into the other fixed pin of the attachment. and Gogu (37), contact with and a driving means for moving the movable fitment (37)
Ri, the fixture (1) and the unloading device (3) are pin insertion
Tools (14) and (31), and between the pin insertion tools (14) and (31).
An attachment / detachment assisting device for an attachment of a hydraulic shovel excavator, wherein a fixing pin (P) can be attached .