JP2000064333A - Pin replacement type both side dump bucket device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent foreign matter from entering to the inner face of the pin bush of the hinge of the carrier side of a part in which the hinge pin of a pin replacement type both side dump bucket device is not inserted. SOLUTION: A bucket and a carrier supporting the bucket are provided with hinge parts right and left respectively, a hinge pin is inserted in one carrier side hinge part 7 and one bucket side hinge part of right and left, and the bucket is rotatably connected to the carrier. A pin push cover 8 for preventing foreign matter from entering is provided on the carrier side hinge part 7 of a part in which the hinge pin is not inserted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin replacement type double sided dump bucket device provided in a construction vehicle such as a wheel loader.

[0002]

2. Description of the Related Art Some construction vehicles such as wheel loaders are equipped with a pin-replaceable double-sided dump bucket device at the tip of a boom as a work tool for use in tunnel construction.

For example, the wheel loader 10 shown in FIG.
The carrier 2 of both side dump bucket devices 20 is tiltably supported by the tip of a boom 12 provided in the front part of the carriage 11 and the bucket 1 is supported by the carrier 2.

As shown in FIG. 5, the carrier 2 is provided with carrier-side hinge portions 7 on both left and right sides, and as shown in FIG. 6, a pin bush 15 and a collar 16 are provided on the inner surface of the carrier-side hinge portion 7. And are installed. Bucket 1
Includes a pair of left and right bucket-side hinges 6 corresponding to the carrier-side hinges 7. Then, one of the bucket-side hinge portions 6 is aligned with one of the carrier-side hinge portions 7, and the hinge pin 4 is inserted and connected, and
A hydraulic cylinder 3 for dumping is attached between the carrier 2 and the bucket 1, and the hydraulic cylinder 3 for dumping is expanded / contracted so that the bucket 1 rotates about the hinge pin 4.

When loading a load of earth and sand or rocks using the wheel loader 10, first, the bucket 1 is tilted forward to move the wheel loader 10 forward toward the load.
Next, the bucket 1 is rotated upward to pick up a load. Then, the boom 12 is raised to hold the bucket 1 in the upward state and the wheel loader 10 is moved to a predetermined dump position. Therefore, when the dump hydraulic cylinder 3 is extended, the bucket 1 tilts laterally to dump the load.

In this bucket 1, the direction in which the load is dumped can be changed to the right or left by changing the right and left of the hinge pin 4. In such a pin-replacement type double-sided dump bucket device 20, one of the left and right bucket-side hinges 6 and the carrier-side hinge 7 is provided.
Although the hinge pin 4 is inserted into and, the hinge pin 4 is not inserted into the other bucket-side hinge portion 6 and carrier-side hinge portion 7.

Therefore, as shown in FIG. 6, the inner surfaces of the pin bushes 15 of the bucket side hinge portion 6 and the carrier side hinge portion 7 into which the hinge pin 4 is inserted are shielded from the outside by the hinge pin 4. However, the inner surface of the pin bush 15 of the bucket-side hinge portion 6 and the carrier-side hinge portion 7 on which the hinge pin 4 is not inserted is open to the outside, and dirt, dust, muddy water, and other foreign matter are invade.

Therefore, as shown in FIGS. 5 and 7, foreign matter is prevented from entering the upper end of the bucket side hinge portion 6 (the upper end in a state where the bucket 1 is tilted forward and the hinge pin 4 is oriented vertically). A lid 5 for attaching is attached.

[0009]

However, since the lower end of the carrier-side hinge portion 7 is left open, foreign matter may enter the inner surface of the pin bush 15 from below. Further, when the bucket 1 is rotated, the carrier-side hinge portion 7 is in a state in which the upper and lower sides are opened.

The present invention is intended to solve the above-mentioned problems in a pin-replaceable double-sided dump bucket device, which prevents foreign matter from entering the inner surface of the pin bush of the carrier-side hinge portion where the hinge pin is not inserted. An object of the present invention is to provide a pin replacement type double-sided dump bucket device that can be prevented.

[0011]

According to the present invention, a bucket and a carrier supporting the bucket are provided with left and right hinge portions, and a hinge pin is inserted into either one of the left and right carrier side hinge portions and the bucket side hinge portion. In addition, in the pin interchangeable side dump bucket device that rotatably connects the bucket to the carrier, a pin bush cover that prevents foreign matter from entering is provided on the hinge portion on the carrier side where the hinge pin is not inserted. The above problem is solved by.

In this pin-replacement type double-sided dump bucket device, foreign matter can be prevented from entering the inner surface of the pin bush of the carrier-side hinge portion where the hinge pin is not inserted by the pin bush cover, so that the pin bush is damaged. The burden of cleaning when replacing the hinge pin or hinge pin is reduced.

In the pin bush cover, a cover member having a connecting hole in the central recess and a peripheral edge portion attached to the end faces of the pin bush and a pair of cover members attached to both end faces of the pin bush are attached. When configured with a connecting member to be fixed,
It is possible to easily attach and detach when replacing the hinge pin. In addition, the structure is simple and inexpensive.

[0014]

1 is a vertical cross-sectional view of a hinge portion of a pin-interchangeable side dump bucket device in which a hinge pin is not inserted according to an embodiment of the present invention.
Is a plan view of the pin bush cover, and FIG. 3 is an explanatory view of a mounted state of the pin bush cover.

The pin-replacement type double-sided dump bucket device has the same basic construction as the conventional double-sided dump bucket device 20 shown in FIGS. The carrier 2 is pivotally supported by the tip of the boom 12 so as to be tiltable, and the bucket 1 is supported by the carrier 2.

The carrier 2 is provided with carrier-side hinge portions 7 on both left and right sides, and as shown in FIG. 6, a pin bush 15 and a collar 16 are provided on the inner surface of the carrier-side hinge portion 7.
And are installed. The bucket 1 includes a pair of left and right bucket-side hinges 6 corresponding to the carrier-side hinges 7. Then, one of the bucket side hinge portions 6 is aligned with one of the carrier side hinge portions 7, the hinge pin 4 is inserted and connected, and the dump hydraulic cylinder 3 is mounted between the carrier 2 and the bucket 1. By extending and contracting the dump hydraulic cylinder 3, the bucket 1
Rotates about the hinge pin 4.

In this bucket 1, the direction in which the load is dumped can be changed to the right or left by changing the hinge pin 4 to the left or right. As shown in FIG. 6, the bucket side hinge portion 6 into which the hinge pin 4 is inserted
And the inner surface of the pin bush 15 of the carrier side hinge portion 7,
It is in a state of being shielded from the outside by the hinge pin 4.

As shown in FIG. 1, a lid 5 is attached to the upper end of the bucket side hinge portion 6 where the hinge pin 4 is not inserted to prevent foreign matter from entering. Further, a pin bush cover 8 for preventing foreign matter from entering is provided on the carrier-side hinge portion 7 on which the hinge pin 4 is not inserted.

The pin bush cover 8 is composed of a cover member 9 and mounting bolts 13. The cover member 9 is
A bolt hole 18 is provided in the central recessed portion 17, and a peripheral edge portion 19 is formed so as to be attached to the end surface of the pin bush 15 via the dust seal 14.

The peripheral edge portion 19 of the cover member 9 is adhered to the upper and lower end surfaces of the pin bush 15 via the dust seals 14, the mounting bolt 13 is inserted through the bolt hole 18, and the nut 21 is attached to the mounting bolt 13. It is connected and fixed by screwing.

In this pin-replaceable double-sided dump bucket device, the hinge bush 4 is covered by the pin bush cover 8.
Since foreign matter can be prevented from entering the inner surface of the pin bush 15 of the carrier-side hinge portion 7 in which the is not inserted,
The burden of cleaning when the pin bush 15 is damaged or the hinge pin 4 is replaced is reduced.

The pin bush cover 8 has a concave portion 1 at the center.
7 is provided with a bolt hole 18 and a peripheral edge 19 is a pin bush 15
The cover member 9 attached to the end surface of the pin and the pin bush 15
Since it is configured with the mounting bolts 13 for connecting and fixing the pair of cover members 9 attached to both end surfaces of the hinge pin 4, the hinge pin 4 can be easily attached and detached when it is replaced. Also,
Since the structure is simple, it can be manufactured at low cost.

[0023]

As described above, in the pin replaceable side dump bucket device of the present invention, foreign matter enters the inner surface of the pin bush of the carrier side hinge portion where the hinge pin is not inserted by the pin bush cover. Can be prevented, and the burden of cleaning when the pin bush is damaged or the hinge pin is replaced is reduced.

In the pin bush cover, a cover member having a connecting hole in the central recessed portion and a peripheral edge portion attached to the end faces of the pin bush and a pair of cover members attached to both end faces of the pin bush are attached. When configured with a connecting member to be fixed,
It is possible to easily attach and detach when replacing the hinge pin. In addition, the structure is simple and inexpensive.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a hinge portion of a pin-replaceable double-sided dump bucket device according to an embodiment of the present invention, in which a hinge pin is not inserted.

FIG. 2 is a plan view of a pin bush cover.

FIG. 3 is an explanatory diagram of a mounted state of a pin bush cover.

FIG. 4 is a side view of a wheel loader including a conventional pin-replacement type double-sided dump bucket device.

FIG. 5 is a rear view showing the state of the side dump bucket device at the time of side dump.

FIG. 6 is a vertical cross-sectional view showing a state in which a hinge pin of a hinge portion into which the hinge pin is inserted is oriented vertically.

FIG. 7 is an explanatory view of a mounted state of a lid of a bucket side hinge portion in which a hinge pin is not inserted.

[Explanation of symbols]

1 bucket 2 career 3 Dump hydraulic cylinder 4 hinge pins 5 lid 6 Bucket side hinge 7 Carrier side hinge 8-pin bush cover 9 Cover member 10 wheel loader 11 dolly 12 boom 13 Mounting bolt 14 Dust seal 15 pin bush 16 colors 17 recess 18 bolt holes 19 Perimeter 20 side dump bucket device 21 nuts

Claims (2)

[Claims] 1. A bucket and a carrier that supports the bucket each have a hinge portion on the left and right, and a hinge pin is inserted into either one of the left and right carrier-side hinge portions and the bucket-side hinge portion to rotate the bucket on the carrier. A pin interchangeable side dump bucket device that is movably connected, characterized in that a pin bush cover that prevents foreign matter from entering is provided in the carrier-side hinge part where the hinge pin is not inserted. Replaceable double sided dump bucket device. 2. A pin bush cover having a connecting hole in a central recess, and a peripheral edge portion of which is attached to end faces of the pin bush, and a pair of cover members attached to both end faces of the pin bush. 2. The pin replacement type double side dump bucket device according to claim 1, further comprising a connecting member for connecting and fixing the side dump bucket device.