JPH01122803A - Safety device for raising/lowering refuse-charged box on refuse collecting cart - Google Patents

Abstract

PURPOSE:To improve the safety of the device in the caption by providing cutout switches for making it impossible to work an operating cylinder for controlling a cylinder for raising and lowering a refuse-charged box, and pilot lamps on the right and left sides of a refuse storing container, and lighting the lamp on one side when the switch on the other side is turned on. CONSTITUTION:Cutout switches SW12 for making it impossible to discharge refuse are provided respectively on the right and the left sides of the back of a refuse storing container 3. Also, pilot lamps PL3 are provided in the vicinity of the switches so as to be lighted in response to the switching of the cutout switches SW12. In this structure, when a refuse-charged box 7 is opened, either one of the right and left cutout switches, SW12 is changed over so as to prohibit an operating switch from working. Thus, when the pilot lamp PL3 is lighted, a driver's seat lamp which is not illustrated here, is lighted at the same time. As a result, the safety of the refuse-charged box can be improved by this structure.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of I!ri Industrial Application) The present invention relates to a safety device for raising and lowering a garbage disposal box in a garbage collection vehicle.

(Prior Art) - In general, a garbage collection vehicle in which a garbage input box equipped with a garbage processing device inside is connected in a tiltable manner to a rear opening of the garbage storage box is well known.

In order to prevent the input box from falling unexpectedly when the garbage input box is tilted for garbage discharge, etc., a support such as a tension rod can be stretched at an appropriate place between the garbage storage box and the garbage storage box. It is known (see Japanese Patent Publication No. 56-15361).

(Problems to be Solved by the Present Invention) In the garbage collection vehicle, a lifting cylinder is provided to open the garbage dumping box, but a support such as a tension rod must be separately installed. However, it is difficult to secure a storage space for the device, and it is also time-consuming to manufacture it.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a garbage collection vehicle in which the garbage disposal box can be easily and safely held open.

(First step to solve the problem) The present invention includes a garbage storage box mounted on a vehicle body, and a garbage input box that is tiltably connected to the rear opening of the garbage storage box via an elevating cylinder. , an opening/closing switch for controlling a yt unloading cylinder of the garbage input box in a garbage collection vehicle comprising a garbage disposal device equipped inside the garbage input box and equipped with a push plate that is swingable via at least a push cylinder; A safety switch that is connected in series to the opening/closing switch and disables the operation of the opening/closing switch, and a pilot lamp that corresponds to the operation of the safety switch are provided, and the safety switch and the pilot lamp are arranged at least on the left 4i of the garbage storage box. The structure is such that when the safety switch on one side is operated, the pilot lamp on the other side lights up.

(Function) When discharging garbage, operate the open/close switch to tilt the garbage input box with respect to the garbage storage box, then operate the safety switch connected in series with the open/close switch described in 01j to disable the open/close switch. , and make it possible to confirm this with the pilot lab.

(Example 'A) Hereinafter, an example of the present invention will be described based on the drawings. Reference numeral 1 denotes a garbage collection vehicle, in which a garbage storage box 3 is placed on a vehicle frame 2'', and the garbage storage box 3 is pivoted by a dump cylinder 4 installed between the vehicle frame 2 and the garbage storage box 3. It can be tilted freely around the 5th part.

A garbage input box 7 is connected to the rear opening 3a of the garbage storage box 3, and the garbage input box 7 is pivoted at a pivot point F76 above the rear opening 3a. It can be tilted freely around the pivot 6 by an installed lifting cylinder 14.

Further, this garbage input box 7 has an input port 8 opened at the rear thereof, and a garbage processing device 9 is installed inside the garbage input box 7.

The garbage processing device 9 includes a pushing plate 10, a rotating plate 11,
It consists of a push cylinder 12, which is a hydraulic actuator for driving them, and a hydraulic motor 13 (see Fig. 2), and as is well known in the art, the garbage input box 7 is stored by the cooperative action of the push plate 10 and the rotary plate 11. The garbage dumped in the section 18 is loaded into the garbage storage box 3.

On the other hand, a lashing cylinder +5 whose one end is pivotally supported is arranged at the rear of the rear surface of the garbage storage box 3, and the other end is connected to a lashing mold 16 which is pivotally supported at the bottom of the garbage storage box 3, and is normally secured. A securing mold 16 is engaged with a U bolt 17 fixed to the front surface of the garbage input box 7 via a cylinder 15, and the garbage input box 7 is secured to the garbage storage box 3.

Next, the hydraulic circuit will be explained with reference to Fig. 2. l)
is the hydraulic pump, '' is the oil reservoir, Vl is the electromagnetic control valve that controls the dump cylinder 4, ■2 is the push cylinder 1
2, v3 is an electromagnetic control valve that controls the hydraulic motor 13, 4 is an electromagnetic control valve that controls the lashing cylinders 1 and 5, v5 is an electromagnetic control valve that controls the lifting cylinder 14, These electromagnetic control valves V1. V2. V3゜V
4. V5 is the spool operating solenoid SO1, c, 5o
ld, 5OLe, 5OLf.

SQL, g, 5OLh, 5OLa, 5OL
j.

It is equipped with S Q L, m.

Then, the electromagnetic control valve V1. V2. V3°V4. V5
Among them, the above-mentioned electromagnetic control valve V2°V4. V5 is arranged in parallel to the discharge pipe of the hydraulic pump P, while the electromagnetic control valves Vl and V3 are arranged in parallel to the discharge pipe, and the electromagnetic control valve group V2. V4. V5 and solenoid control valve group Vl
.

It is arranged in series with v3. V6. V7 is usually 7L
A solenoid S O1,k for operating the spool is an electromagnetic on-off valve energized to a position that prevents contraction of the descending cylinder 14 and allows expansion of the ascending/descending cylinder 14 .

It is equipped with s　　　+　+.

Next, the electric circuit will be explained with reference to FIGS. 3 and 4.

B is a power source such as a battery, and SWl is a selection switch that selects implantation work or discharge work.

5WIO is a gun switch that tilts the garbage storage box 2;
5WII is an open/close switch that opens and closes the garbage input box 7;
W12.5W13 is a safety switch that disables ejection work from the driver's seat, and 5WI6 is a lashing switch that releases the aforementioned lashing 16. Among these switch groups, the selection switch SWI, the open/close switch 5W11, and the dump switch 5WIO are arranged in the driver's seat, and the safety switch 5WI2.5WI3 and the securing switch SWI6
is provided at the rear of the garbage storage box 3, especially the safety switch 5.
W12.13 are arranged on the port and starboard sides, respectively.

Further, LSI is an electric contact that operates when the pushing plate 10 is at the forward limit position, LS4 is an electric contact that is activated when the garbage storage box 3 is in the traveling position, and 1 and S5 are electric contacts that are activated when the garbage storage box 7 is tilted at a predetermined angle. The electrical contacts LS6 are electrical contacts that are activated when the garbage input box 7 is opened, and the electrical contacts L and S7 are electrical contacts that are activated when a power take-off device (not shown) is operated. R7°R8 is a relay, and contacts r7. It is equipped with r8.

PL, 2. PL3. PL4 is a pilot lamp, which lights up in conjunction with the switching operation of safety switches 5W12 and 5W13, and pilot lamp P1.2
is installed in the driver's seat, and PL3゜1) I, 4 are the safety switches 5WI2, 5W on the left and right sides of the rear part of the garbage storage box 3.
13, respectively.

Next, the operation of the present invention will be explained. First, when a power take-off device (not shown) is operated, electric contact LS7 is closed and relay 1<7 is energized. Excitation of relay R7 continues energization of the subsequent circuit via its a contact r7.

Here, after switching the selection switch SWI to the upper position, dumping garbage from the input port 8 into the JlN garbage input box 7 and pressing the start switch (not shown), the push plate lO and the rotary plate Garbage processing device 9 consisting of 15
operates appropriately and pushes the garbage into the garbage storage box 3.

After loading the garbage into the garbage storage box 3, the vehicle travels to a designated treatment site and discharges the garbage.

For this ejection, first the selection switch SWI is switched to the lower position, and then the lashing switch SW+6 is turned to the upper position.

As a result, the current flows through the selection swig SWI, the safety switches 5WI2, 5WI3, the securing switch 5WI6, the electrical contact 14S1, the b contact r2, and the solenoid SOLr, switching the electromagnetic control valve V2 to the lower position. Then, the pressure oil from the hydraulic pump P flows into the piston rod side oil chamber of the push cylinder 12, and the piston back pressure side oil chamber communicates with the oil reservoir T, so the push cylinder 12 contracts.

The electric contact LSI switches at the same time as the push plate 10 retreats due to the contraction of the push cylinder 12, so the current from the lashing switch 5W16 is cut off to the solenoid SOL f and is transferred to the solenoid S via the electric contact 1 and Sl.
Flows to OI-a.

Therefore, as a result of switching the electromagnetic control valve 2 to the neutral position and simultaneously switching the electromagnetic control valve V4 to the upper position, the pressure oil from the hydraulic pump P is supplied to the piston back pressure side oil chamber of the lashing cylinder 15. When the pressure reaches a certain level,
The piston rod side oil chamber communicates with the oil reservoir T via the pilot check valve, and the lashing cylinder 15 extends to rotate the lashing 16 clockwise and detach it from the U bolt 17.

Therefore, the binding of the garbage input box 7 to the garbage storage box 3 is released.

In this way, prior to the extension of the lashing cylinder 15, the pushing plate 1
0 is operated slightly backward, the pressure of the dust acting on the pushing plate 10 is reduced, and the burden on the lashing cylinder 15 is reduced.

After this, when the open/close switch swz is switched to the 4-h position, the current flows to the solenoid SOLm, and the solenoid control valve v5
switch to the upper position.

Then, the pressure oil flows through the electromagnetic on-off valve V6. The oil is supplied to the piston back pressure side oil chamber of the lifting cylinder 14 via V7, and as a result, the lifting cylinder 14 is extended.
is opened to the garbage storage box 3.

Then, when the garbage input box 7 opens at a certain angle, the electrical contact L
Since S5 is switched, after this dump switch 5WIO
When the solenoid S OL c is switched to the upper position,
To? The TI flow flows, the electromagnetic control valve v1 is switched to the upper position, the dump cylinder 4 is extended, the garbage storage box 2 is tilted, and the garbage is taken out.

After the discharge of garbage is completed, if the dump switch 5WIO is switched to the downward position, the solenoid SQL, d is energized, and the electromagnetic control valve v1 is switched to the downward position, so that the dump cylinder 4 is contracted and the garbage storage box is closed. Lay down 3.

When the garbage storage box 3 returns to the running position, the electrical contacts 1 and 34
After that, when the open/close switch 5WII is switched to the downward position, the current flows to the solenoid 5OLk.
, flows to SQL+, and the electromagnetic on-off valve V6. Switch V7 to the lower position.

As a result, the oil chamber on the piston back pressure side of the lifting cylinder 14 is opened by the electromagnetic on-off valve V6. V7. It communicates with the oil reservoir T through the electromagnetic control valve 5 located at the center position, and the lifting cylinder 14 is contracted by the weight of the garbage input box 7, and the garbage input box 7 is closed.

In this case, the pressure oil from the hydraulic pump P is sent to the lifting cylinder 14.
The oil does not act on the oil reservoir 1', and in addition to returning to the oil reservoir T via the electromagnetic control valve, as the elevating cylinder 14 contracts, pressure oil is replenished from the oil reservoir 1' to its piston rod side oil chamber.

After the garbage input box 7 reaches the connected state with the garbage storage box 3, if the securing switch SW+6 is turned to the lower position, the electric contact LS6 is opened and the excitation of the relay R8 is cut off. Contact point r8. solenoid 5 via r4
energize OLj. Therefore, the electromagnetic control valve v4 is switched to the lower position, and the pressure oil from the hydraulic pump P is supplied to the piston back pressure side oil chamber of the securing cylinder 15.

The lashing cylinder 15 is contracted and the lashing mold 16 is engaged with the U bolt 17 of the garbage input box 7 in the connected state.

In this way, once the vehicle returns to the running state, it is possible to start the garbage collection work again.

In addition, when the garbage input box 7 is opened, the safety switch 5W
12. If at least one of 3W13 is switched to the lower position in FIG.
It does not flow to WII and is safe.

Then, by switching the safety switch 5W12 or 5WI3, a pilot lamp I) placed in the driver's seat can be activated.
1.2 lights up to notify the operator in the driver's seat, and a pilot lamp P installed at the rear of the garbage storage box 3 corresponds to the switching operation of the safety switch 5W12 or 5WI3.
3 or Pl, 4 lights up.

For example, when the safety switch 5W12 on the rear left side of the garbage storage box 3 is switched to the lower position, the pilot lamp PL2 in the driver's seat lights up, and the pilot lamp on the rear right side of the garbage storage box 3 can be recognized. There is less waste in switching. Note that this can be recognized by the switching position of the safety switch 5W12 on the rear left side of the garbage storage box 3.

In addition, when releasing the safety switch 12, it is sufficient to switch the switch 12 to the upper position on the rear left side of the garbage storage box 3, but at the same time, by confirming that the pilot lamp pt, 3 is turned off, the safety switch 5W13 on the right side is turned off. be aware that it has also been canceled.

In addition, in the embodiment of the present invention, the garbage treatment device is constructed of a rotating plate and a pushing plate, but the garbage treatment device is not limited to this embodiment.

(Effects of the invention) By making the lever inoperable using a safety switch, there is no need to separately provide a support such as a tension rod.
A safety switch and a pilot lamp are arranged on the left and right sides of the garbage storage box, and when the safety switch on one side is operated, the pilot lamp on the other side sometimes lights up, so that the operating status of the safety switches on both sides can be confirmed on only one side.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and Fig. 1 is a side view of the rear of the garbage collection vehicle, Fig. 2 is a hydraulic circuit diagram, Fig. 3 is an electric circuit diagram, and Fig. 4 is an electrical contact and each switch. It is a layout diagram.

Claims (1)

[Claims] A garbage storage box mounted on the vehicle body, a garbage input box tiltably connected to the rear opening of the garbage storage box via an elevating cylinder, and a garbage input box equipped inside the garbage input box and equipped with at least a push cylinder. In a garbage collection vehicle comprising a garbage processing device equipped with a push plate that can be freely swung through an opening/closing switch that controls the lifting cylinder of the garbage input box, the opening/closing switch is connected in series to the opening/closing switch and disables operation of the opening/closing switch. A safety switch and a pilot lamp corresponding to the operation of the safety switch are provided, and the safety switch and the pilot lamp are arranged at least on the left and right sides of the garbage storage box, and when the safety switch on one side is operated, the pilot lamp on the other side lights up. A safety device for lifting and lowering a garbage input box in a garbage collection vehicle, characterized in that the device is configured to do so.