JP3634254B2 - Garbage truck - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a garbage collection vehicle such as a compression plate type, a rotary plate type, and a packing box rotary type.
[0002]
[Prior art]
For example, as shown in FIG. 5, the compression plate type garbage truck has guide rails 5 extending from the upper part of the rear door 4 toward the lower part on both sides of the rear door 4 attached to the rear of the cargo box 3. A movable plate 6 is provided on the guide rail 5 so as to be movable, a compression plate 7 is rotatably attached to the lower end of the movable plate 6, and a cylinder (not shown) is connected to the side surface of the rear door 4. ) And the compression plate 7 is rotated by the cylinder 8 connected to the movable plate 6, whereby the compression plate 7 scrapes up the dust thrown into the bucket 9 in the rear door 4 and rises obliquely upward. 10 is sent into the packing box 3 through 10.
[0003]
That is, in the compression plate type garbage collection vehicle, the movable plate 6 is lowered (lowered state), and the compression plate 7 is rotated forward by the extension of the cylinder 8 and is put into the bucket 9 through the insertion port 11. The compression plate 7 is moved upward by moving the movable plate 6 and the dust is sent into the cargo box 3 from the passage 10, and the dust is accommodated in the cargo box 3 (conveyed state). The four steps in which the compression plate 7 rotates backward (reversed state) due to the contraction of the cylinder 8 are set as one cycle, and dust is loaded into the packing box 3.
[0004]
The rear door 4 is rotatably attached to a frame 13 provided on the upper side of the opening 12 of the packing box 3 so that the opening 12 formed obliquely behind the packing box 3 can be closed. The rear door 4 is rotated rearward to open the opening 12 of the cargo box 3, and the discharge plate 14 slidably arranged in the cargo box 3 is slid rearward by the extension of the cylinder 15. Thereby, the dust loaded in the packing box 3 can be discharged | emitted from the opening part 12 outside.
[0005]
[Problems to be solved by the invention]
By the way, in the conventional compression plate type garbage truck, there is a problem of an explosion accident or a fire accident when a cassette cylinder or the like in which flammable gas remains is mixed with other dust and thrown into the rear door 4. It has become. As a cause thereof, it is conceivable that a cassette cylinder or the like is crushed by the movable plate 6 or the compression plate 7 and a spark generated by contact between metals during the loading operation ignites the residual gas released from the cassette cylinder or the like.
[0006]
And such explosion accidents and fire accidents are not limited to compression plate type garbage trucks, but adopt a configuration in which dust is compressed and loaded into the packing box, such as a rotating plate type or packing box rotation type. It is recognized as a problem with all garbage trucks. Therefore, no matter what kind of garbage truck is used, the safety of the operator is not ensured unless this problem is solved.
[0007]
Therefore, the present invention has been made to solve such problems, and is a case where a container such as a cassette cylinder, a spray can, or a disposable lighter in which flammable gas remains is mixed in the garbage. An object of the present invention is to provide a garbage truck that can prevent an explosion accident or a fire accident.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention includes a cargo box 3 mounted on the vehicle 1 and a rear door 4 that closes the rear opening 12 of the cargo box 3, and is provided on the rear door 4. In the garbage truck configured to load the dust thrown in from the inlet 11 into the cargo box 3, the nonflammable gas storage means 17 for storing the nonflammable gas, the nonflammable gas storage means 17 and the rear door a pipe means 18 to contact 4, a combustible gas detector 16 for detecting the combustible gas released from a cassette gas cylinder or the like to be mixed in the dust, by the detection signal of the combustible gas detector 16, dust And a control means 21 that supplies the non-combustible gas into the rear door 4 with the piping means 18 open .
[0009]
That is, in the garbage truck according to the present invention, when the combustible gas detection means 16 detects the gas released from the dust, the control means 21 stops the apparatus related to the loading of the dust, and causes the cause of gas ignition. In this way, sudden explosion accidents and subsequent fire accidents can be suitably prevented.
[0010]
Further, refuse collection vehicles according to the present invention, when the combustible gas detector 16 detects the combustible gas, so as to release the noncombustible gas such as nitrogen gas or inert gas into the rear door 4 Yes . This is to increase the reliability of explosion prevention by diluting the concentration of the combustible gas and the oxidizing gas of the combustible gas.
[0011]
Furthermore, it is preferable that the garbage truck according to the present invention adopts a configuration in which when the combustible gas detection means 16 detects combustible gas, an alarm such as sound or light is issued to notify the operator. This is so that an operator can quickly respond to the occurrence of an emergency.
[0012]
In addition, the garbage truck according to the present invention loads a dust passage 10 in the rear door 4 that connects the inlet 11 and the rear opening 12 and the dust in the passage 10 into the cargo box 3. For example, the combustible gas detection means 16 may be disposed at a position below the passage 10.
[0013]
Such a configuration is intended for a so-called compression plate type or rotary plate type garbage collection vehicle, unlike a so-called cargo box rotation type garbage collection vehicle in which the package box itself rotates about its axis. In these two garbage collection vehicles, the dust introduced from the insertion port 11 is sent into the cargo box 3 through the passage 10 by the loading device. When the dust passes through the passage 10, there is a high probability that the cassette cylinder or the like is crushed and gas is released, and the released gas goes down the passage 10 due to its specific gravity. Therefore, if the combustible gas detection means 16 is disposed at a position below the passage 10, gas detection can be performed at an early stage, and an emergency can be dealt with quickly.
[0014]
On the other hand, the piping means 18 is more preferably configured to be connected to an upper position of the rear door 4. This is because the incombustible gas and water released descend downward due to their specific gravity. However, it may be configured to be connected to a lower position and forcibly discharged upward.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a garbage truck according to an embodiment of the present invention will be described.
[0016]
As shown in FIG. 1, the garbage truck according to the present embodiment is rotatably attached to a packing box 3 composed of a substantially rectangular box mounted on the vehicle 1 and a rear upper end of the packing box 3. The rear door 4 includes a loading device including a guide rail 5, a movable plate 6, and a compression plate 7 in the rear door 4 as in the conventional case (shown in FIG. 5). Inside, a discharge device including a discharge plate 14 is provided.
[0017]
A characteristic part of the garbage truck according to the present embodiment is that a measure for preventing an explosion accident or a fire accident is taken. The gas detection sensor 16 and an inert gas such as argon, or an incombustibility such as nitrogen or the like. A gas tank 17 for storing gas (collectively referred to as “nonflammable gas”) and a piping system 18 connected to the gas tank 17 are provided.
[0018]
The gas detection sensors 16 are respectively attached to the left and right side surfaces of the rear door 4 so that the gas concentration in the dust passage 10 introduced into the bucket 9 from the insertion port 11 of the rear door 4 can be detected. . The gas detection sensor 16 is disposed below the passage 10 or in the bucket 9 in consideration of the fact that the flammable gas has a higher specific gravity than air.
[0019]
The said gas tank 17 is a container arrange | positioned between the driver's seat 2 and the cargo box 3, and the nonflammable gas is stored in it in the state of gas or liquid. Since the gas tank 17 is a known one, a detailed description thereof is omitted.
[0020]
One end of the piping system 18 is connected to the gas tank 17, an electromagnetic valve 19 is interposed at an intermediate position, and a discharge nozzle 20 is provided at the other end. The piping system 18 is piped in such a manner that the discharge nozzles 20 are inserted into the interior from the ceiling portion of the rear door 4 from the gas tank 17 through the ceiling portion of the cargo box 3.
[0021]
Further, in the piping system 18, a piping member (for example, flexible piping or hose piping) that can be bent in response to the rotation of the rear door 4 is adopted for a portion that moves from the cargo box 3 to the rear door 4. . Further, the piping system 18 is branched into a plurality (four in the present embodiment) in the width direction at the ceiling portion of the rear door 4, and the gas flowing through the piping system 18 flows into the ceiling portion of the rear door 4. Are discharged downward from a plurality of locations.
[0022]
Here, as shown in FIG. 2, the control box 21 provided in the driver's seat 2 includes a gas detection sensor 16, a solenoid valve 19, an alarm device 23 in the driver's seat 2, and an alarm device in the rear door 4. 25 is connected. The alarm device 23 in the driver's seat 2 is built in an operation box 22 provided in the driver's seat 2 for operating the loading device, and the alarm device 25 in the rear door 4 It is built in the operation box 24 provided in the side part of the rear door 4 in order to operate a closing device, and all can be recognized by the sound of a buzzer or light emission of a lamp.
[0023]
The operation boxes 22 and 24 are connected to the control box 21 and are provided with buttons and switches for starting and stopping the loading device or intermittently operating the four steps of the loading device. When these various buttons and switches are operated, a signal is sent to the control box 21, and the control box 21 receiving this signal controls the operation of the loading device.
[0024]
The refuse collection vehicle according to the present embodiment has the above-described configuration. Next, an operation mode when a cassette cylinder or the like in which flammable gas remains is mixed with other dust and thrown into the rear door 4 will be described.
[0025]
Assume that a cassette cylinder or the like in the trash is crushed by the loading device during the loading operation. Then, the residual gas is released into the rear door, and the gas detection sensor 16 detects the released gas when it exceeds a predetermined concentration. This detection signal is sent to the control box 21, and the control box 21 that has received this signal stops the operation of the loading device so as not to generate a spark, and activates the alarms 23 and 25 to alert the operator. Inform the situation.
[0026]
On the other hand, the control box 21 opens the electromagnetic valve 19 and discharges the nonflammable gas stored in the gas tank 17 from the discharge nozzles 20 to the rear door 4 through the piping system 18. Residual gas is diluted by this nonflammable gas, and ignition of the residual gas is prevented.
[0027]
As described above, in the garbage truck according to the present embodiment, when a gas leak of the combustible gas is detected, the operation of the loading device that is the source of the spark is stopped, and the combustible gas is released by the release of the noncombustible gas. Since the configuration for diluting the concentration of the property gas is adopted, it is possible to suitably prevent an explosion accident and a fire accident.
[0028]
In addition, the garbage truck which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.
[0029]
For example, in the above embodiment, the discharge nozzles 20 are arranged above the rear door 4 so as to supply the incombustible gas into the passage 10 indirectly. However, as another embodiment, As shown in FIG. 3, the non-combustible gas is supplied directly into the passage 10 by lowering the piping system 18 to the side of the rear door 4 and inserting the discharge nozzles 20. You may do it.
[0030]
Moreover, in the said embodiment, although the gas detection sensor 16 is arrange | positioned in the downward position of the rear door 4 and the front-end | tip of the piping system 18 is connected to the rear door 4, as FIG. 4, a duct 26 to which an exhaust fan 27 is attached is connected to the lower position of the cargo box 3, and the gas in the cargo box 3 is discharged through the duct 26 by the operation of the exhaust fan 27. Detection may be performed (as an example, the gas detection sensor 16 is disposed in the duct 26). In this case, since the inside of the cargo box 3 is in a negative pressure state, it is possible to capture the diffusing combustible gas suitably and perform gas detection quickly and reliably.
[0031]
Further, the tip of the piping system 18 is connected to the upper position of the packing box 3 in correspondence with the gas detection sensor 16 being disposed at the lower position of the packing box 3. At this time, it is more preferable that the piping system 18 is branched into a plurality of parts and the discharge nozzles 20 are arranged at predetermined intervals on the ceiling of the packing box 3 so that the incombustible gas is uniformly discharged into the packing box 3. .
[0032]
Further, although not shown, water may be used in place of the nonflammable gas. In such a case, a water tank (water storage means) for storing water, a piping system (piping means) connected to the water tank, and a pump that is disposed in the middle of the piping system and operates according to an instruction from the control box (Piping means) is required. The discharge nozzle at the tip of the piping system 18 may discharge water in a sprayed state depending on the shape of the tip.
[0033]
Further, the dust collection vehicle according to the present invention is not limited to the above-described compression plate type dust collection vehicle, and is also intended to be a rotary plate type or a packing box rotation type garbage collection vehicle. Here, the rotating plate type collection vehicle has a configuration in which a rotating plate is rotatably mounted in the rear door, and a pushing plate that is swingable in the front-rear direction is mounted above the rotating plate. Then, the dust in the door is scraped up by the rotating plate, the dust scraped up by the rotating plate is sent into the packing box, and the dust is loaded in the packing box.
[0034]
In addition, the packing box rotation type garbage truck has a drum-shaped packing box that is driven to rotate on the vehicle, and has an input port on the rear door that opens and closes the rear opening of the packing box. Is provided with spiral hoisting blades for feeding the introduced dust to the front of the drum. In the case of the packing box rotation type, it is difficult to provide the gas detection sensor and the piping system in the packing box. Therefore, more preferably, the gas detection sensor is located at the lower position of the inner surface of the rear door. Should be provided above the inner surface of the rear door.
[0035]
And the type and location of the gas detection sensor, the type and mounting location of the gas tank, the piping mode of the piping system, the number of branches at the tip of the piping system, the type and shape of the discharge nozzle, the type of solenoid valve, and the type of alarm The element is not limited, and any element that can open and close the piping system may be used instead of the solenoid valve.
[0036]
【The invention's effect】
As described above, the garbage truck according to the present invention is configured such that when a cassette cylinder or the like mixed in the dust is crushed and combustible gas is released from the inside, gas detection is performed and the apparatus is stopped. Therefore, it is possible to eliminate the occurrence of sparks that cause gas ignition, and therefore it is possible to prevent the occurrence of explosions and fire accidents, thereby ensuring the safety of workability.
[Brief description of the drawings]
FIG. 1 is a rear perspective view of a garbage truck according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of wiring / piping modes of the garbage truck according to the embodiment.
FIG. 3 is a rear perspective view of a garbage truck according to another first example.
FIG. 4 is a rear perspective view of a garbage truck according to another second example.
FIG. 5 is a side view including a partial cross section near the rear door of a conventional garbage truck.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 ... Packing box, 4 ... Rear door, 10 ... Passage, 11 ... Input port, 16 ... Gas detection sensor (flammable gas detection means), 17 ... Gas tank (nonflammable gas storage means), 18 ... Piping system (piping means) ), 19 ... Solenoid valve (piping means), 20 ... Discharge nozzle (piping means), 21 ... Control box (control means), 22 ... Operation box (operating means), 23 ... Alarm (alarm means), 24 ... Operation Box (operation means), 25 ... alarm (alarm means), 26 ... duct (piping means), 27 ... exhaust fan (exhaust means)

Claims (5)

A cargo box (3) mounted on the vehicle (1) and a rear door (4) closing the rear opening (12) of the cargo box (3) are provided on the rear door (4). In the refuse collection vehicle configured to load the dust introduced from the inlet (11) into the cargo box (3), the nonflammable gas storage means (17) for storing the nonflammable gas, the nonflammable Piping means (18) communicating between the gas storage means (17) and the rear door (4), and combustible gas detection means (16) for detecting combustible gas released from a cassette cylinder or the like mixed in the dust When, the by the detection signal of the flammable gas detection means (16) stops the loading process of the dust, the control supplied to the pipe means (18) the rear doors (4) in a non-flammable gas in the open state A garbage collection vehicle comprising means (21). The garbage truck according to claim 1 , wherein nitrogen gas is used as the non-combustible gas. The refuse collection vehicle according to claim 1 or 2 , further comprising alarm means (23, 25) activated by a detection signal of the combustible gas detection means (16). In the rear door (4), a dust passage (10) for connecting the inlet (11) and the rear opening (12), and the dust in the passage (10) are placed in the packing box (3). A trash can according to any one of claims 1 to 3 , further comprising a loading device for loading the gas, and wherein the combustible gas detection means (16) is disposed at a position below the passage (10). Collection car. The refuse collection vehicle according to any one of claims 1 to 4 , wherein the piping means (18) is connected to a position above the rear door (4).

Images