JP2522471Y2 - Garbage box securing device for garbage trucks - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention provides a luggage lashing device for a refuse collection vehicle that secures a luggage box to a vehicle body to stabilize a garbage collection vehicle that discharges stored garbage by a dump system during traveling.

[0002]

2. Description of the Related Art When the weight of a tailgate or the like increases due to the improvement of the dust loading capacity of a garbage truck, the position of the center of gravity of the packing box and the tailgate is located above or behind the dump point of the packing box. Become like For this reason, the dump cylinder expands due to oil leakage from the gap between the spool of the directional control valve for dump cylinder control and the valve housing during traveling, and the packing box on the chassis rises, and the maximum stability tendency angle and traveling stability Tends to decrease.

Therefore, it is desirable to completely secure the packing box to the chassis during traveling, and to automatically release the packing box when discharging the stored dust in the packing box.

For this reason, conventionally, as a packing box securing device of this kind, for example, Japanese Utility Model Publication No. Sho 63-26325, etc., a tail gate locking device provided between a packing box and a tail gate is used. It is known that a box is fixed to a chassis.

[0005]

However, as disclosed in the above-mentioned Japanese Utility Model Publication No. 63-26325, the case where the packing box is secured to the chassis by using the tailgate locking device is the tailgate. Since the force of the lock cylinder is distributed for securing the packing box, not only the original tailgate locking force is weakened, but also the tailgate locking hook and the packing box securing hook engage each other. This adjustment is relatively difficult because it is necessary to engage the pins uniformly, and the tailgate lock hook does not open when the hook securing the packing box and the engagement pin bite, and the tailgate rises. There is a problem that it becomes impossible to perform.

[0006] In view of the above, the present invention is provided separately from the tailgate locking device, has a relatively simple structure, and can secure the packing box in conjunction with the opening and closing of the tailgate. The purpose is to provide things.

[0007]

In order to achieve the above object, a luggage box securing device for a refuse collection vehicle according to the present invention is provided with a luggage box mounted on an undercarriage and capable of tilting rearward, and a rear side of the luggage box. A luggage box of a refuse collection vehicle, which secures the luggage box of the refuse collection vehicle to the chassis, the garbage collection vehicle having a tailgate having an upper end tiltably mounted at the opening and a tailgate having a refuse loading device mounted therein. In the binding device, a rotatable hook is disposed at the lower part of the packing box, and an engaging pin that engages with the hook is disposed on the chassis, and the hook is disengaged from the engaging pin by a spring. One end of a swing lever rotatably mounted on the lower rear end of the packing box and one end of the hook are connected via a connecting rod, and the swinging of the lower part of the tail gate is performed by lowering the tail gate. The swing lever is rotated by contacting the other end of the movement lever, and The hook via imaging rod is obtained by projecting the push lever to rotate to the engagement position of the engaging pin.

[0008]

According to the present invention constructed as described above, in order to travel on the road and collect garbage, when the rear end opening of the cargo box rested on the undercarriage is closed by the tailgate, the tailgate is closed. The swing lever rotates through the push lever by its own weight, and with this rotation the hook rotates through the connecting rod to the engagement position with the engagement pin, thereby securing the packing box to the chassis. Is done. Also, when the tailgate is raised to tilt the packing box backward to discharge (dump) the stored dust in the packing box, the push lever is lifted to release the contact between the swinging lever and the push lever. Swings in the direction in which the engagement with the engagement pin is released by the elastic force of the spring, whereby the securing of the packing box to the chassis can be released.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

A chassis 1 is a chassis frame 2 of a refuse collection vehicle.
A packing box 3 is pivotally supported at its rear end by a dump shaft 4 and is mounted on the chassis 1 so as to be dumped (tilted) by a dump cylinder 5. A tailgate 6 having a dust collecting device (not shown) mounted therein is pivotally connected to a rear end opening of the packing box 3 by a lift cylinder 8 with its upper end pivotally supported by a pivot 7. .

As shown in detail in FIGS. 2 and 3, a push lever 9 projects forward from the lower front surface of the tail gate 6. As shown in FIG. A lever bracket 10 is fixed to a rear end opening of the packing box 3, and a swing lever 11 is pivotally mounted on the bracket 10 at a middle portion thereof along a traveling direction of the vehicle body via a support pin 12. In addition to being freely supported, a rear end of a connecting rod 14 is rotatably connected to a position above the support pin 12 of the swing lever 11 via a clevis 13a.

As a result, when the tail gate 7 is lowered, the tip of the push lever 9 contacts the contact plate 11a below the swing lever 11, and the swing lever 11 is rotated rightward in FIG. Thus, the connecting rod 14 is pulled backward.

On the other hand, a hook bracket 15 is fixed to the lower part of the front floor of the packing box 3 as shown in FIGS. 4 and 5 in detail.
Is rotatably supported along the direction of travel of the vehicle via a support pin 17 at an intermediate portion thereof.
The front end of the connection rod 14 is rotatably connected to the hook 16 at a position above the support pin 17 via a clevis 13b. Further, an engagement pin 18 which is engageable with the hook 16 is disposed on both sides of the front of the chassis 1 below the hook 16.

Thus, as described above, the tailgate 6
When the connecting rod 14 is pulled backward with the downward movement of the hook, the hook 16 rotates in the direction of engagement with the engagement pin 18 (the right direction in FIG. 4), and the rotation causes the hook 16 to rotate. To secure the cargo box 3 at the rest position to the chassis 1.

Further, a tension spring 19 is stretched between the position above the support pin 17 of the hook 16 and the front end of the hook bracket 15 with an eyebolt 20 interposed therebetween.
Thus, the hook 16 is urged by the elastic force of the tension spring 19 to always release the engagement with the engagement pin 18, that is, to rotate the hook 16 to the left in FIG.

Thus, when the pulling force of the connecting rod 14 is no longer applied, that is, when the tail gate 6 is raised and the pressing force of the push lever 9 on the swing lever 11 is no longer applied, the hook 16 is moved. 4 is disengaged from the engaging pin 18 by the elastic force of the tension spring 19, whereby the securing of the packing box 3 to the chassis 1 is released. Power eyebolt 20
It can be adjusted via:

In this embodiment, as shown in FIG. 4, a proximity switch 21 for detecting that the hook 16 has been released from the engagement pin 17 is provided, and the proximity switch 21 is connected to a relay 22. Thus, the safety circuit shown in FIG. 6 is configured.

This safety circuit makes it possible to drive the dump cylinder 5 only when both the right and left proximity switches 19 are on, that is, when each hook 16 is released from each engagement pin 21. With this, it is possible to prevent the packing box 3 from damaging the hook 16 and the like while the hook 16 is engaged with the engagement pin 21.

Accordingly, since the hook 16 is constantly urged by the tension spring 19 in the direction of releasing the engagement with the engagement pin 18, when the tail gate 6 is opened, the push lever 9 swings due to the weight of the tail gate 6. The force applied to the hook 16 via the moving lever 11 and the connecting rod 14 is eliminated, and the securing of the packing box 3 to the chassis 1 is released by the elastic force of the tension spring 19. Then, when the hook 16 is turned to the position of the proximity switch 21 and turned on, the safety circuit operates to dump the packing box 3 by the dump cylinder 5 and discharge the dust contained in the packing box 3. Become like

On the other hand, when the tailgate 6 is completely lowered after the dust in the packing box 3 is discharged and the packing box 3 is rested on the chassis 1, the push lever 9, the swing lever 11 and the connection The hook 16 rotates in the direction of engagement with the engagement pin 18 against the elastic force of the tension spring 19 via the rod 14, whereby the packing box 3 is fixed to the chassis 1.

[0021]

[Effect of the Invention] Since the present invention has the above configuration,
By configuring separately from the tailgate locking device, it is possible to prevent various drawbacks associated with the use of the tailgate locking device, such as weakening of the original tailgate locking force, and the tailgate. In conjunction with the opening and closing of the box, the packing box can be securely tied and released.

Moreover, not only is the structure relatively simple, but also because there is no use of a hydraulic device or the like, there is an effect that failure is less likely and the cost is lower.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of one embodiment of the present invention.

FIG. 2 is an enlarged view of a part II in FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an enlarged view of a part IV in FIG. 1;

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a circuit diagram of a safety circuit.

FIG. 7 is an overall side view of the refuse collection vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Undercarriage 3 Packing box 6 Tail gate 9 Push lever 11 Swing lever 11a Contact plate 12, 17 Support pin 14 Connecting rod 16 Hook 18 Engagement pin 19 Tension spring 21 Proximity switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A packing box mounted on a chassis and tiltable rearward, and a tailgate having an upper end tiltably mounted on a rear opening of the packing box and having a dust loading device mounted therein. A garbage box securing device for a garbage truck, which secures the cargo box of the garbage truck to the chassis, wherein a rotatable hook is engaged with a lower portion of the cargo box and the chassis is engaged with the hook. While arranging the pins, the hook is urged by a spring in a direction to release the engagement with the engaging pin, and one end of a swing lever rotatably mounted on the lower rear end of the packing box and the hook are connected to each other. One end is connected via a connecting rod, and the lower part of the tail gate abuts against the other end of the swing lever by lowering the tail gate to rotate the swing lever, thereby connecting the hook via the connecting rod. Push lever for rotating to an engagement position with the engagement pin Refuse collection vehicles crates lashing device, characterized in that projecting from.