JPS5857578B2 - Quick coupler device in loading machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a quick coupler device for a loading machine that is effective in effectively utilizing the machine and improving work efficiency.

When using a loading machine using packets, etc., when it is necessary to exchange the front packet with another attachment to perform various operations depending on the work, generally, to exchange the attachment, pull out pin 1 as shown in Figure 1. to attach other attachments, etc.

At this time, when replacing the attachment, it is difficult to align the holes of the pins 1, and it is impossible for one person to replace the attachment.

Conventionally, there is an IC coupler device that allows one person to carry out this replacement work, and this is shown in FIG.

In this entire device, holes 6 and 7 are connected to holes 5 and 4 on the vehicle side in FIG.
The packet 13 has a structure as shown in FIG. 5, and the upper inverted fishhook groove 10 is hooked onto the pin 8 shown in FIG. 13 is integrated with the vehicle side.

To insert or remove the pin 12, use the control lever 1.
4, a valve 15 is actuated to guide air pressure or hydraulic pressure to a cylinder 16, and movement of a piston 17 causes the valve 15 to move in and out of the pin 12.

Therefore, since the pins are inserted and removed using pneumatic or hydraulic pressure, they require pneumatic or hydraulic equipment such as control valves and cylinders, which has the disadvantage of being expensive.

The present invention has been made in order to eliminate the drawbacks of the conventional examples.There has been a demand for a dedicated attachment for effective use of machines and improvement of work efficiency, but since it takes a lot of time to replace it, it is troublesome. However, in the present invention, the attachment can be easily replaced and can be provided at a low cost.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 7 shows an embodiment of the present invention; Fig. 8 is a side view of a wheel loader with a packet, Fig. 8 is a plan view thereof, Fig. 9 is a front view of a quick coupler device according to the invention, and Fig. 10 is a longitudinal section thereof. FIG. 11 shows a plan view thereof.

9, 10, and 11, the structure is the same as the conventional structure except for the mechanism for inserting and removing the pin 20, and the reference numerals 6,
7 (hole), 8 (pin), and 9 (bracket) were the same as in the conventional example.

The pin 20 connects to the lever 23 via a link 21 or 22.
The rotating surface is connected to 9 through the rod 24.
It is connected to a 0 degree eccentric lever 25.

A plate 26 with a certain area is attached to the other end of the lever 25, and a hook 27 that hooks onto the plate 26 and a push boss 28 that pushes the plate 26 together constitute a bracket 29, which is attached to a lift arm on the vehicle side. The hook 27 is operated by a cable 32 (Fig. 11).
The knob 33 is provided on the driver's seat.

When the knob 33 is pulled, the hook 27 gets caught on the back of the plate 26, as shown in FIG. do not have.

A spring 30 shown in FIG. 9 is used to maintain the state of the pin 20.

Next, the operation of the present invention will be explained.

First, regarding the case of coupling, when attaching the packet 13, as shown in FIG. It is hung and then raised using the cylinder 19 (Figs. 13 and 14).

Then, the surface of the plate 260 shown in FIG. 11 hits the push boss 28 attached to the lift arm 3 of the vehicle, and as the cylinder 19 is further compressed, the plate 26 is pushed in, and the lever 25, rod 24, lever 23, ring 22 and insert/remove pin 20 into packet 1 via ring 21.
3 through the pin hole 11, and the connection with the bracket 9 is completed.

If the knob 33 is returned to its original position in this state, the hook 27 will be in the state shown by b in FIG. I will not pull it out.

Note that this state is a state in which the packet 13 is raised during normal work, and therefore it is possible to proceed to work as is.

Next, we will discuss the case of releasing the bond.

When removing the packet 13 from the apparatus, the cylinder 19 is retracted to the stopper end, resulting in the state shown in FIG. 14.

When viewed from above, it is as shown in Fig. 11, and the hook 27
However, it is in the state shown by b.

Then, when the knob 33 installed on the driver's seat is pulled, the hook 27 is caught on the back of the plate 26 (as shown in Figure 11), and as the cylinder 19 continues to extend, the packet 13 and the bracket 9 are centered around the pin 7. As it falls forward, the plate 26 is pulled by the hook 27 and rotates to the state shown in FIG.
, the insertion/removal pin 20 via the link 22 or 21,
After passing through the pin insertion hole 11 of the packet 13 and going through the state shown in FIG. 13, the packet 13 becomes caught in the device and the inverted fishhook groove 10 of the packet.

Therefore, when the cylinder 19 is further extended, the packet 13 is lowered onto the ground, and the vehicle is driven backwards, it is separated from the device as shown in FIG.

If the knob 33 is returned to its original position in this state, the hook 27 will be in the state shown in FIG. 11 and will be out of the contact range of the plate 26.

As mentioned above, the quick coupler device of the present invention has a simple and inexpensive mechanism compared to the conventional quick coupler device, does not become complicated even when a variety of attachments are prepared, and has a structure that can be easily replaced. ing.

[Brief explanation of the drawing]

Fig. 1 is a side view of a wheel loader with a packet, which is a conventional loading machine, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view showing a conventional quick coupler device, and Fig. 4 is a side view thereof.
Fig. 5 is a side view showing the packet structure of a conventional quick coupler device, Fig. 6 is a side view showing the vehicle side structure of the conventional quick coupler device, and Fig. 7 is a wheel loader with a packet showing an embodiment of the present invention. 8 is a plan view thereof, FIG. 9 is a front view of the quick coupler device according to the present invention, FIG. 10 is a longitudinal sectional view thereof, and FIG. 11 is a plan view thereof,
Figure 12 is a side view of the device before it is connected to the vehicle;
FIGS. 13 and 14 are side views showing the procedure for installing the present device on a vehicle. 3... Arm, 6, 7... Hole, 8...
...Pin, 9...Bracket, 10...
... flJ fishhook groove sound IS, 11 ... pin insertion hole, 13 ... packet, 20 ... bottle, 21.22 ... ring, 23, 25 ...・・・・・・
Lever 24... Rod, 26... Plate, 27... Hook, 28... Push boss, 29... Bracket, 30.31 ...
... Spring, 32 ... Cable, 33.
...Whelk.

Claims (1)

[Claims] 1 In a quick coupler device for removably connecting a packet 13 to a loading machine equipped with a pair of arms 3, a pair of links 2, an arm, and a cylinder for operating the link, an inverted fishhook-shaped upper part of the packet 13 is attached to the upper part. It has a pin 8 for hooking the groove 10, has a bottle hole at the bottom that matches the position of the bottle hole 11 on the lower side of the packet 13, and is spaced apart laterally,
The upper end is connected to the link 2 and the lower end is connected to the arm 3 by a pin 6.7, a pair of mutually connected brackets 9, a pin 20 that can be inserted into and removed from the bottle hole provided in the pair of brackets, and the pin. An insertion/extraction mechanism member having a plate 26 at the end connected to the arm 3 via a link, a push boss 28 provided on the arm 3 and capable of contacting the plate 26, and a push boss 28 provided on the arm 3 that engages and disengages the plate 26. Possible hook 27 and cylinder and link packet 13
A quick coupler device for a loading machine, characterized in that the quick coupler device is adapted to be attached and detached.