JPH0144481Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a garbage collection vehicle of the type that collects garbage contained in a container box of a certain shape, and more specifically relates to a reversing device for the container box.

Prior Art A garbage collection vehicle that collects garbage stored in a container box of a certain shape has a mechanism for inverting the container box and throwing the garbage inside into the garbage input box of the garbage collection vehicle. A container box reversing device is installed.

FIG. 3 is a side view illustrating a known container box reversing device, in which 1 is the body of a garbage collection vehicle, 2 is a large-capacity garbage storage box placed on the top of the vehicle body 1 so that it can be dumped, and 3 is the garbage container. A garbage input box is shown which is installed in the rear part of the storage box 2 so as to be openable and closable, and is equipped with a garbage input port 4 into which garbage is input.

The container box reversing device 5 is connected to the garbage input box 3.
The reversing hydraulic cylinder 6 is installed at the lower rear of the vehicle and is composed of a swing arm 7, a bar 8, and a lock mechanism 9. The container box reversing device 5 has a bilaterally symmetrical shape, and therefore only one side thereof will be described in the following explanation.

The reversing hydraulic cylinder 6 has a base 6' rotatably attached to a bracket 10 fixed to the side surface of the garbage input box 3, and the tip 11' of the piston rod 11 of the reversing hydraulic cylinder 6 is attached to a swing arm. 7
It is rotatably attached to a part of the shaft.

The swing arm 7 has an upper end rotatably connected to a bracket 10 by a pivot 12, and a bar 8 is installed between the lower ends of the left and right swing arms 7, 7. Further, the swing arm 7 has a lock mechanism 9.
It has a structure in which the container box 13 can be easily locked to the swing arm 7 by the lock mechanism 9. That is, the lock mechanism 9 is
As shown in FIGS. 4 to 6, a lock arm mounting frame 19a is erected at the intermediate portion of the swing arm 7, and a support bracket 19b, which is erected on the lower inner side of the lock arm mounting frame 19a, and a support bracket 19b protruding from the swing arm 7 are provided. A pin shaft 15 is mounted between the locking hydraulic cylinder mounting frame 19c, and the base end of a lock arm 14 having a hook-shaped tip is fixed to the end of the pin shaft 15 on the support bracket 19b side. An arm 16 is fixed to the other end of the pin shaft 15 protruding from the locking hydraulic cylinder mounting frame 19c, and the locking hydraulic cylinder 1 is attached to the upper part of the locking hydraulic cylinder mounting frame 19c.
The base end of the container box 13 is pivotably attached to the base end of the container box 13, and the tip of the piston rod 17' of the locking hydraulic cylinder 17 is pivotably attached to the tip of the arm 16. The rod-shaped member 13' attached to the upper side of the lock arm 1
The container box 13 is locked to the swing arm 7 by fitting into the elongated hole A formed between the container box 4 and the lock arm mounting frame 19a.

The container box 13 is movable by attaching a predetermined number of casters 18 to the bottom, and can be placed in residential areas, shopping streets, or semi-residential and semi-commercial areas for garbage disposal in locations that do not obstruct road traffic. Depending on the quantity, for example, in residential areas, one is placed for every 30 to 40 households.

The operation procedure of the container box reversing device of the garbage collection vehicle will be explained below with reference to FIGS. 7a to 7c.

As shown in FIG. 7a, the lock mechanism 9 is released and the lock arm 14 is opened. In this state, after moving the container box 13 filled with garbage to the rear of the garbage collection vehicle, the locking hydraulic cylinder 17 is operated to extend the piston rod 17'. The power is transmitted to the lock arm 14 through the lock arm 14, and the lock arm 14 closes, thereby trapping the rod-shaped member 13' of the container box 13 in the elongated hole A, as shown in FIG. Ru.

Next, as shown in FIG. 7b, when the reversing hydraulic cylinder 6 is operated and the piston rod 11 is extended, the swing arm 7 is rotated upward and the bar 8 is rotated.
After contacting the side of the container box 13,
The container box 13 is gradually turned over by the bar 8, and the garbage in the container box 13 is thrown into the garbage input box 3 from the garbage input port 4 by its own weight.

Thereafter, as shown in FIG. 7c, the piston rod 11 of the reversing hydraulic cylinder 6 is retracted and the container box 13 is lowered to its original position, and the locking mechanism 9 is released to move the container box 13 into the container. Remove the box from the reversing device.

Problems to be solved by the invention In the above-mentioned conventional container box reversing device 5,
Reversing hydraulic cylinder 6 and locking hydraulic cylinder 1
Since the operating procedures 7 are independent from each other, each of the hydraulic cylinders 6 and 17 must be operated individually and in a predetermined order when reversing a container box. The procedures had become complicated and troublesome.

Means for Solving the Problems The present invention has been made to solve the above problems and improve operability. In the container box reversing device 5 for a garbage collection vehicle, the container box reversing device 5 is constructed of a locking mechanism 9 that is incorporated in the swing arm 7 and includes a locking hydraulic cylinder 17 for locking the container box 13 to the swing arm 7. driving solenoids 22a, 22b,
23a, 23b are controlled by a first limit switch 27 controlled by the lock arm 14 and a second limit switch 28 controlled by the swing arm 7. This is a container box reversing device 5 for a garbage collection vehicle in which limit switches 27 and 28 are connected in parallel and switched by one operation switch 26.

Embodiment Hereinafter, an embodiment in which the present invention is applied to a container box reversing device for a garbage collection vehicle shown in FIGS. 3 to 6 will be described.

FIG. 1 is a hydraulic piping diagram for operating the container box reversing device according to the present invention, and FIG. 2 is a wiring diagram of the control mechanism of the container box reversing device.

In FIG. 1, 20 is a pressure line from an oil pump (not shown), and 21 is a return line to an oil tank (not shown).

The pressure pipe 20 includes a reversing hydraulic cylinder 6.
A first hydraulic switching valve 22 that switches and controls the expansion and contraction operation of the
and a second hydraulic switching valve 23 that switches and controls the expansion and contraction operation of the locking hydraulic cylinder 17.

The first and second hydraulic switching valves 22, 23
are both center bypass type 4-port 3-position spring center type switching valves, and each hydraulic switching valve 2
The switching devices 2 and 23 each have a hydraulic switching valve 22,
This is done by drive solenoids 22a, 22b, 23a, and 23b attached to both sides of the spool 23. That is, when the driving solenoid 22a of the first hydraulic switching valve 22 is energized, the first hydraulic switching valve 22 is switched to the left position and the reversing hydraulic cylinder 6 is switched to the left position.
When the piston rod 11 is extended and the drive solenoid 22b is energized, the first hydraulic switching valve 22
is switched to the right position to retract the piston rod 11 of the reversing hydraulic cylinder 6. Further, when the driving solenoid 23a of the second hydraulic switching valve 23 is energized, the second hydraulic switching valve 23 is switched to the left position and the piston rod 1 of the locking hydraulic cylinder 17 is
7' is extended and the drive solenoid 23b is energized, the second hydraulic switching valve 23 is switched to the right position and the piston rod 17' of the locking hydraulic cylinder 17 is retracted.

In the figure, 24 is a pilot check valve connected between the locking hydraulic cylinder 17 and the second hydraulic switching valve 23 to further ensure the locked state of the lock arm 14, and 25 is a pressure pipe. It is a safety valve connected between 20 and the return pipe 21.

In FIG. 2, 26 is an operation switch for switching between the reversing operation and the lowering operation of the container box reversing device 5, and 27 is connected to the contact 26a on the reversing operation side of the operation switch 26, and the lock arm 14 is in the closed position. A first limit switch 28, which is operatively arranged at a suitable location on the lock arm mounting frame 19a, is connected to a contact point 26b on the lowering operation side of the operating switch 26, and is activated by the swing arm 7 in the lowering position. The second limit switch is shown disposed at an appropriate location on the bracket 10.

A solenoid 23a for driving the second hydraulic switching valve 23 is connected to the normally open terminal 27a of the first limit switch 27, and a solenoid 23a for driving the first hydraulic switching valve 22 is connected to the normally closed terminal 27b. 22a
is connected. Further, the drive solenoid 22b of the first hydraulic switching valve 22 is connected to the normally open terminal 28a of the second limit switch 28, and the driving solenoid 22b of the first hydraulic switching valve 22 is connected to the normally closed terminal 28b of the second hydraulic switching valve 23. A driving solenoid 23b is connected.

The operation switch 26 is located at an appropriate location at the rear of the garbage collection vehicle where it can be easily accessed.

The operating procedure of the container box reversing device will be explained below.

Assuming that the initial state is a state in which the operation switch 26 is in the neutral position, the swing arm 7 is completely lowered, and the lock arm 14 is closed, in this state, the contacts 27a and 28a of the first and second limit switches 27 and 28 are closed. open, contacts 27b, 2
8b is closed.

First, when the operation switch 26 is operated to close the contact 26b on the lowering operation side, the contact 28b of the second limit switch 28 is closed as described above, so the drive solenoid 2 of the second hydraulic switching valve 23 is closed.
3b is energized, and the second hydraulic switching valve 23 is switched to the right position by the drive solenoid 23b.
When the second hydraulic pressure switching valve 23 is switched to the right position, the hydraulic oil from the pressure pipe 20 flows into the retraction side cylinder 17a of the locking hydraulic cylinder 17 to retract the piston rod 17'. The lock arm 14 opens and the lock mechanism 9 is released from the locked state. At this time, since the lock arm 14 opens, the contact 27a of the first limit switch 27 closes and the contact 27b opens.

Next, attach the container box 1 to the swing arm 7.
3 and operate the operation switch 26 to close the contact 26a on the reverse operation side. Then, as described above, since the contact point 27a of the first limit switch 27 is closed, the driving solenoid 23a of the second hydraulic switching valve 23 is energized, and the driving solenoid 23a causes the second hydraulic switching valve 23 to be energized. switches to the left position. When the second hydraulic switching valve 23 is switched to the left position, the hydraulic oil from the pressure pipe 20 flows into the extension side cylinder chamber 17b of the lock hydraulic cylinder 17 to extend the piston rod 17'.
The lock arm 14 closes and the container box 13
is locked to the swing arm 7 by a lock arm 14. When the lock arm 14 is completely closed as described above, the lock arm 14 opens the contact 27a of the first limit switch 27 and closes the contact 27b, so that the drive solenoid 23a of the second hydraulic switching valve 23 is While the energization is interrupted, the driving solenoid 22a of the first hydraulic switching valve 22 is energized. Therefore, since the second hydraulic switching valve 23 returns to the neutral position, the supply of hydraulic oil to the locking hydraulic cylinder 17 is interrupted.
Lock arm 14 remains in the closed position. On the other hand, since the first hydraulic switching valve 22 is switched to the left position by the drive solenoid 22a, the hydraulic oil from the pressure pipe 20 flows into the extension side cylinder chamber 6b of the reversing hydraulic cylinder 6. Extend the piston rod 11. Therefore, the swing arm 7 is swung upward by the reversing hydraulic cylinder 6, and after the bar 8 comes into contact with the side surface of the container box 13, the swing arm 7 swings with the container box 13 supported by the bar 8. As the arm 7 swings, the container box 13 is reversed, and the garbage in the container box 13 is thrown into the garbage inlet box 3 from the garbage inlet 4 by its own weight. In this state, since the swing arm 7 is in the raised position, the contact 28a of the second limit switch 28 is closed and the contact 28b is open.

As mentioned above, after putting the garbage in the container box 13 into the garbage input box 3, when the operation switch 26 is operated to close the contact 26b on the lowering operation side, the contact 28a of the second limit switch 28 is closed. , the driving solenoid 22b of the first hydraulic switching valve 22 is energized, and the driving solenoid 22b of the first hydraulic switching valve 22 is energized.
b, the first hydraulic switching valve 22 is switched to the right position. Therefore, the hydraulic oil from the pressure line 20 is
In order to flow into the retraction side cylinder chamber 6a of the reversing hydraulic cylinder 6 and retract the piston rod 11, the swing arm 7 swings downward to lower the container box 13 to its original position. When the swing arm 7 is completely lowered, the second limit switch 28 is activated to open the contact 28a and close the contact 28b, so that the energization to the driving solenoid 22b of the first hydraulic switching valve 22 is interrupted. , solenoid 2 for driving the second hydraulic switching valve 23
3b is energized. Therefore, the first hydraulic switching valve 22 returns to the neutral position and interrupts the supply of hydraulic oil to the reversing hydraulic cylinder 6. On the other hand, since the second hydraulic switching valve 23 is switched to the right position by the driving solenoid 23b, the hydraulic oil from the pressure pipe 20 flows into the retracting side cylinder chamber 17a of the locking hydraulic cylinder 17. and piston rod 1
7' is moved in and out. Therefore, the lock arm 14 is
It is opened by the locking hydraulic cylinder 17 and the locking state of the locking mechanism 9 is released. After this, the empty container box 13 is removed from the swing arm 7.

After that, when the operation switch 26 is operated to close the contact 26a on the reverse operation side, the contact 27a of the first limit switch 27 is closed as described above, so the drive solenoid 2 of the second hydraulic switching valve 23 is closed.
3a is energized, and the second hydraulic switching valve 23 is switched to the left position by the driving solenoid 23a.
Therefore, the hydraulic oil from the pressure pipe 20 flows into the extension cylinder 17b of the locking hydraulic cylinder 17 to extend the piston rod 17'.
Lock arm 14 is closed. If the operating switch 26 is operated to switch to the neutral position when the lock arm 14 is completely closed, the swing arm 7 and the lock arm 14 will all be in the initial state.

In the above description, the first and second hydraulic switching valves 22 and 23 are referred to as the drive solenoid 22.
A, 22b, 23a, and 23b are used as electromagnetic switching valves, but the device of the present invention can also use other hydraulic switching valves, mechanical switching valves using cams, etc.

Effects of the Invention As explained above, according to the device of the present invention, the container box of a garbage collection vehicle can be reversed by changing only one operation switch, which improves the workability of collecting garbage in the container box. In addition, work efficiency can be significantly improved.

In addition, if the reversing device and locking mechanism are hydraulic, the present invention can be easily implemented by changing the hydraulic piping and adding a control device, so it is highly versatile and can be implemented at low cost. is small.

[Brief explanation of the drawing]

Fig. 1 is a hydraulic piping diagram for operating the container box reversing device of a garbage collection vehicle according to the present invention, Fig. 2 is a wiring diagram of the control mechanism of the container box reversing device, and Fig. 3 is a diagram of a conventional garbage collection vehicle. 4 is an enlarged front view of the lock mechanism, FIG. 5 is a left side view of FIG. 4, and FIG. 6 is a right side view of the main parts of FIG. Figures 7a to 7c are diagrams for explaining the operation of the container box reversing device. 5... Container box reversing device, 6... Hydraulic cylinder for reversing, 7... Swing arm, 9...
Lock mechanism, 13...Container box, 17...
...Lock hydraulic cylinder, 22...First hydraulic switching valve, 22a, 22b...Solenoid for driving the first hydraulic switching valve, 23...Second hydraulic switching valve, 2
3a, 23b... Solenoid for driving the second hydraulic switching valve, 26... Operation switch, 27... First limit switch, 28... Second limit switch.

Claims (1)

[Scope of utility model registration request] A garbage disposal device comprising a swing arm that is swingable by a reversing hydraulic cylinder, and a lock mechanism that is incorporated into the swing arm and includes a lock hydraulic cylinder for locking a container box to the swing arm. In a container box reversing device for a collection vehicle, a driving solenoid for a first hydraulic switching valve that controls the reversing hydraulic cylinder and a second hydraulic switching valve that controls the locking hydraulic cylinder is controlled by the lock arm. The limit switch is controlled by a first limit switch controlled by the swing arm and a second limit switch controlled by the swing arm, and the first and second limit switches are connected in parallel and switched by one operating switch. This is a container box reversing device for a garbage collection vehicle.