JPS5817811Y2 - Front loader attachment support device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an attachment support device for a front loader.

Conventionally, in this type of attachment support device, the loader arm and rod are rotatably connected to the docking plate, and the connection between the attachment and the docking plate is performed by a separately provided shaft. The width of the plate increases in the longitudinal direction, making it larger and heavier, and the mounting position of the attachment moves away from the operating position, making it difficult to operate. This method has drawbacks such as a smaller distance (distance) and an increased number of parts for connection.

The object of this invention is to obtain an attachment support device for a front loader that can eliminate the above-mentioned drawbacks.

This idea involves attaching a pair of left and right loader arms and rods, which are driven by hydraulic cylinders, to both sides of a loader frame attached to the body of a tractor, facing each other vertically, and attaching the loader arms and rods to each of the right and left sides. A docking plate is rotatably connected to both ends of the shaft by shafts, and the attachment is removably held by these shafts, and at least the upper or lower shaft of these shafts is used as a hollow shaft. The device is characterized in that relative movement between the docking plate and the attachment is locked by a shaft-like member inserted through the shaft.

Therefore, the attachment is held by a shaft connecting the loader arm and rod and the docking plate, and at least one of the shafts is a hollow shaft, and the docking plate and the attachment are fixed by a shaft-like member inserted through the hollow shaft. Therefore, the width of the docking plate in the front and back direction can be narrowed to make it smaller and lighter, and the mounting position of the attachment can be moved closer to the operating position for easier operation. The maximum damping clearance of the connecting member is increased, and the number of parts of the connecting member can be reduced.

A first embodiment of this invention will be explained based on FIGS. 1 to 4.

Reference numeral 1 denotes a tractor body, and mounting bases 2 and 3 are fixedly provided on both sides of the tractor 1.

Then, side frames 5 extending upward are fixed to both rear sides of a U-shaped frame 4 whose front part is detachably held on the mounting base 2 and whose rear part is detachably held on the mounting base 3. A loader room 6 is provided.

One end of a loader arm 7 and hydraulic cylinders 8, 9 are rotatably connected to each of these side frames 5.

The other end of the hydraulic cylinder 8 is connected to a link arm 10.

One end of the link arm 10 is rotatably connected to the intermediate portion of the loader arm 7, and a rod 11 is rotatably connected to the other end.

The ends of the loader arm 7 and the rod 11 are rotatably connected to a docking plate 12, and the left and right docking plates 12 are fixedly connected by a pipe 13, which is a shaft.

The loader arm 7 and the docking plate 12 are connected by a hollow shaft 14, and the rod 11 and the docking plate 12 are rotatably connected by the pipe 13.

Movement of the rod 11 and docking plate 12 in the longitudinal direction of the pipe 13 is fixed by inserting flanged pins 15 into both ends of the pipe 13.

A bucket I.16, which is an attachment, is rotatably and detachably connected to the docking plate 12.

That is, the pipe 13 is located above the back of the packet 16.
A protrusion 18 having a notch 17 to be hooked to is provided,
A protrusion 21 having a hole 20 into which a pin 19 inserted into the hollow shaft 14 is inserted is provided at the lower part of the back surface.

In such a configuration, when installing the packet 16, operate the hydraulic cylinders 8 and 9 to hook the pipe 13 connecting the left and right docking plates 12 and the rod 11 into the notch 17 of the packet 16, and then apply the hydraulic pressure. cylinder 9
When the loader arm 7 is raised by operating the packet 16
Due to the weight of the pipe 13 and the notch 17, the hook between the pipe 13 and the notch 17 becomes deeper, and the packet 16
is rotated to align the hole 20 of the protrusion 21 with the hole of the hollow shaft 14, and the protrusion 20 of the hollow shaft 14 is inserted and connected with one pin.

In this way, in order to make the connecting portion between the loader arm 7 and the docking plate 12 and the connecting portion between the rod 11 and the docking plate 12 also serve as the connecting portion with the packet 16, the width of the docking plate 12 in the front and rear direction is narrowed. It is possible to reduce the size and weight.

In addition, the mounting position of the packet 16 is closer to the operating position, making it easier to operate, increasing the maximum dumping clearance when the loader arm 7 is raised and dumping, and reducing the number of parts such as the pin 19 used for connection. can be reduced.

Next, a second embodiment of this invention will be explained based on FIG.

Note that the same parts as those described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

Two plates 22 are provided in the middle of the pipe 13 so as to be rotatable and fixed to slide in the axial direction.

Holes 24 into which pins 23 are inserted are formed in these plates 22.

When attaching a hook 25, etc., which is a type of attachment, use the mounting hole 26 of the hook 25 and the hole 24 of the plate 22.
Align the pins 23 and insert the pins 23.

After inserting the pin 23, a pin (not shown) or the like is inserted into a hole 27 formed in the pin 23 to prevent the pin 23 from being removed.

In this way, the hook 25 etc. can be further attached and used while the packet 16 etc. shown in the first embodiment is attached, and the trouble of attaching and detaching attachments depending on the purpose of use can be saved. .

Since this device is constructed as described above, the attachment is held using the shaft connecting the loader arm, the rod, and the docking plate, and at least one of these shafts is made into a hollow shaft, and the attachment is inserted into this hollow shaft. Since the relative movement between the attachment and the docking plate is locked by the pin, the width of the docking plate in the front and back direction can be narrowed to make it smaller and lighter, and the attachment position can be moved to the operating position. This has the following effects: the loader arm can be brought closer and easier to operate, the maximum damping clearance when lifting and dumping the loader arm can be increased, and the number of parts of the connecting member can be reduced.

[Brief explanation of the drawing]

Figures 1 to 4 show the first embodiment of this invention; Figure 1 is a side view, Figure 2 is a partially enlarged side view, and Figure 3 is a partially enlarged side view. Side view, 4th
The figure is a partially enlarged perspective view, and FIG. 5 is a partially enlarged perspective view showing a second embodiment of this invention. 1...Tractor, 6...Loader frame, 7...Loader arm, 8-9...
Hydraulic cylinder, 11...Rod, 12...
...Docking plate, 13...Pipe (shaft), 14...Hollow shaft (shaft), 16...
Packet (attachment), 19... pin (
shaft-like member).

Claims (1)

[Scope of utility model registration request] A pair of left and right loader arms and rods, which are driven by hydraulic cylinders, are mounted on both sides of a loader frame attached to the body of the tractor, facing each other vertically, and a pair of loader arms and rods are attached to both ends of the loader arm and the rod on each right and left side. The docking plates are rotatably connected by shafts, and the attachments are removably held by these shafts, and at least the upper or lower shafts of these shafts are hollow shafts and are inserted into these hollow shafts. An attachment support device for a front loader, characterized in that relative movement between the docking plate and the attachment is locked by a shaft-like member.