JPH0346901A - Safety device for garbage truck - Google Patents

Abstract

PURPOSE:To provide a strong, stabilized supporting force with a narrow operating range and simple structure by disposing a support leg vertically movably at the rear lower end of a chassis and moving the support leg vertically by utilizing the rotation of a hinge shaft associated with the dumping action of a garbage holding container. CONSTITUTION:When a tail gate is lifted by extending a cylinder and a garbage holding container 1 is raised with a cylinder 17 for dumping the garbage, a swing arm 18 swings downward. This movement causes, via a relay rod 23, a support leg 20 to move downward into upright condition while being guided with elongated holes 19a, 19b of a support leg guide 19. The support leg 20 with its bottom surface in contact with the surface of a wheel stop 25 stands and supports a chassis. This structure provides a stabilized supporting force with a narrow operating range.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a safety device for a garbage collection vehicle, especially when discharging garbage.
That is, the present invention relates to a safety device for a garbage collection vehicle to prevent the garbage collection vehicle from tipping over backwards when dumping the garbage storage box and the tailgate upward and backward, respectively.

[Conventional technology]

2. Description of the Related Art It is generally known that a garbage collection vehicle is provided with a garbage storage box that can be dumped upwardly on a pedestal frame, and a tailgate that can be dumped backwards is provided at the rear end of the garbage storage box. In this type of garbage collection vehicle, when discharging the garbage collected in the garbage storage box at a garbage processing plant, the garbage storage box is dumped upward and the tailgate is dumped backward.

By the way, in the case of this type of garbage collection vehicle, if the amount of garbage discharged is large, the center of gravity of the vehicle will move significantly backwards during this discharge, which in the worst case can lead to the garbage collection vehicle tipping over. There are some drawbacks.

For this reason, conventional methods for preventing garbage collection vehicles from falling to the rear of the vehicle include, for example, the Japanese Utility Model Application No. 58-1270.
As No. 05, a support leg is provided at the rear end of the platform frame of the garbage collection vehicle, which is linked to the backward tilting and return of the garbage storage box.
When dumping the garbage storage box above, this support leg is rotated from a horizontal state to a vertical state, and the end surface of this support leg is brought into contact with the ground, and the carrier frame is supported by this support leg behind the rear wheels of the vehicle. Something like this has been proposed.

[Problem to be solved by the invention]

However, the device described in the above-mentioned Japanese Utility Model Publication No. 58-127005 specifically uses a spring as a means for interlocking the supporting legs with the simultaneous movement of the garbage storage box, and the operation is performed by the operation of this spring. Because of this, not only the operating force is quite weak, but the vehicle body cannot be jacked up, and the supporting legs are configured to rotate, so the operating range is quite wide. It is thought that there are problems in that it is difficult to install because it causes a lot of interference with the vehicle body, and furthermore, it becomes quite unstable when the vehicle shakes back and forth.

In view of the above, the present invention has a relatively simple structure, can obtain strong and stable supporting force by using the damper of the garbage storage box, has a relatively narrow operating range, and can therefore be easily attached to the vehicle body. The aim is to provide what is possible.

[Means to solve the problem]

In order to achieve the above object, the safety device for a garbage collection vehicle according to the present invention has a rear lower part of a garbage storage box rotatably supported on the vehicle body via a support shaft, and the garbage storage box is rotated by a cylinder. In the safety device during garbage collection, which dumps and discharges the garbage loaded inside, a support leg guide that extends downward is provided vertically at the rear lower end of the vehicle body, and the support leg is held in a substantially vertical direction by this support leg guide. In this state, the swinging arm is suspended on the upper moving part, and a swinging arm that swings together with this rotation is fixed to the support shaft, and this swinging arm and the support leg are connected via a relay rod. Connect and dump into the garbage storage box °
By the simultaneous movement of the support shafts, the support legs are moved up and down using the support leg guide as a guide.

[For production]

According to the present invention configured as described above, when the garbage storage box cylinder of the garbage collection vehicle is operated and the garbage storage box is rotated and dumped upward, the swing arm swings in conjunction with this dumping. With this rocking, the support leg is moved downward via the relay rod using the support leg guide as a guide, and the support leg is erected on the rear end of the heavy body, thereby preventing the vehicle from falling.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 indicates a garbage storage box, and a tailgate 3 is rotatably connected to the rear end of this garbage storage box 1 via a shaft 2. This tailgate 3 is configured to be dumped rearward via a tailgate cylinder 4. Inside the tailgate 3, there is a push-in panel 6 that swings around the fulcrum 5 and a rotating panel 8 that rotates around the fulcrum 7.
The push-in panel 7 is driven by a push-in cylinder 10, and the rotary panel 8 is driven by a rotary motor 11.

Note that the reference numeral 12 is a deflector for preventing backflow of dust.

Further, the garbage storage box 1 is provided on the loading platform frame 15,
This main garbage box 1 is rotatably connected to the platform frame 15 via a support shaft 16 at its rear end, and this garbage storage box 1 is connected via a garbage storage box cylinder 17 as shown in FIG. It is supposed to be dumped upwards.

The support shaft 16 rotates together with the garbage storage box 1 when the garbage storage box 1 is rotated and dumped. A swinging arm 18 that swings together with this is fixed to the vehicle body in a diagonally downward direction, and thereby the garbage storage box 1
When dumped upward through the garbage storage box cylinder 17, the swinging arm 18 swings downward h (rightward in Figure 3) together with the support shaft 16, and when this dumping is released, it swings upward (rightward in Figure 3). (to the left in the figure).

On the other hand, at a position corresponding to the swing arm 18 at the rear lower end of the loading platform frame 15, a support leg guide 19 is vertically extended downward, and the support leg guide 19 is provided with a predetermined distance between the upper and lower sides. a pair of elongated holes 19a extending substantially vertically;
19a is bored. In these elongated holes 19a, 19a, pins 21 are protruded from the support legs 20 and positioned on the upper side.
．． 22 is slidably inserted using this as a guide.

Furthermore, one end of a relay rod 23 is rotatably connected to the tip of the swing arm 18 via a pin 24, and the other end of the relay rod 23 is connected to the tip of the swing arm 18, as shown in detail in FIG. It is rotatably connected to the pin 22, and as a result, as the swing arm 18 swings, this relay rod 2
3, the support leg 20 is configured to be moved up and down while being held in a substantially vertical state.

During normal running as shown in FIG. 1, the pins 21 and 22 are connected to the elongated holes 19a and 1, as shown in detail by solid lines in FIG.
9a, and the support legs 20 are lifted upward, and when the garbage storage box 1 shown in FIG. As the support leg 20 moves downward, it becomes almost vertical and its lower end surface comes into contact with the wheel stopper 25.

During normal driving, the support leg 20 is lifted upward as shown in Figure 1, and when discharging garbage, the rear wheel on the east side of the garbage collection is first moved as shown in Figure 1. is moved backward until it reaches the wheel chock 25, and then, as shown in FIG. 2, the tailgate cylinder 4 is extended to lift the tailgate 3 upward.

Subsequently, the cylinder 17 of the garbage storage box 1 is extended to dump the garbage storage box 1 upward.

At this time, the swing arm 18 swings downward as the garbage storage box 1 rotates, and swings downward using the elongated holes 19a, 19a of the support leg guide 19 as a guide via the relay rod 23 connected to the tip of the swing arm 18. is lowered to an upright position, and the lower end surface is attached to the ring 11.
It is brought into contact with the surface of the eyelet 25 to stand up. Thereby, it is possible to reliably prevent the garbage collection vehicle from falling backwards when discharging the garbage.

After the garbage is discharged, the garbage storage box 1 is lowered, and then the tailgate 3 is lowered.

At this time, the support leg 20 slides upward due to the upward swing of the swing arm 18 as the garbage storage box moves downward, and becomes ready to travel.

The above embodiment has a relatively simple configuration in which the support leg 20 is simply slid upward F via a link mechanism using the thrust of the garbage storage box cylinder 17 that rotates the garbage storage box 1. Falling can be reliably prevented.

(Effects of the Invention) Since the present invention has the above-mentioned configuration, the supporting legs are moved up and down by the dumbbells of the garbage storage box, which not only makes it possible to strengthen the supporting force of the support legs, but also improves the ability of the garbage storage box to move up and down. Since the support leg is moved up and down with the rotational movement of the support leg, the operating range of the support leg can be suppressed to a narrower range, making it easier to attach the support leg to the vehicle.

Furthermore, since the support leg is held via a relay iron whose both ends are connected to the support leg guide and the swinging arm, there is an effect that stability is good and the structure is relatively cylindrical.

[Brief explanation of drawings]

FIG. 1 is a side view of a garbage collection vehicle equipped with an embodiment of the present invention when it is running, FIG. 2 is a side view of the same when garbage is being discharged, and FIG.
The figure is a side view showing the main parts enlarged, and Figure 4 is the rV of Figure 3.
-IV line sectional view. 1... Garbage storage box, 15... 6f frame, 16
... Support shaft, 17... Garbage storage box cylinder, 18...
- Swing arm, 19... Support leg guide, 19a...
Elongated hole, 20... Support leg, 21.22.24... Pin, 23... Relay rod.

Claims (1)

[Claims] A safety device for a garbage collection vehicle in which the rear lower part of the garbage storage box is rotatably supported on the vehicle body via a support shaft, and the garbage storage box is rotated and dumped by a cylinder to discharge the garbage loaded inside the garbage storage box. A support leg guide extending downward is installed vertically at the rear lower end of the vehicle body, and the support leg is suspended from the support leg guide so as to be vertically movable while being held in a substantially vertical direction, and the support leg is suspended from the support leg guide so as to be able to move up and down, and the support leg is mounted on the support shaft integrally with this rotation. A swinging arm that swings is fixed, and this swinging arm and the support leg are connected via a relay rod, and the support leg guide is moved by the rotation of the support shaft as the garbage storage box is dumped. A safety device for a garbage collection vehicle, characterized in that support legs are moved up and down as a guide.