JP2019112176A - Refuse collecting vehicle - Google Patents

Abstract

To provide a refuse collecting vehicle making it easier to check an over-loading detection device by simplifying a constitution thereof so as to easily maintain it as well.SOLUTION: A refuse collecting vehicle including a chassis 2 having a differential gear, a refuse storage box 4 loaded on the chassis 2, and an over-loading detection device 10 for detecting over-loading of the refuse storage box 4. The over-loading detection device 10 is provided below a bottom plate part of the refuse storage box 4, and the over-loading detection device 10 is provided with a detection part 11 for detecting a vertical distance L between the detection device and a part 5a to be detected in a differential carrier 5 to constitute the detection device so as to detect over-loading of the refuse storage box 4 from data measured by the detection part 11.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a waste collection vehicle having an overload detection device that detects overload of a waste storage box.

  2. Description of the Related Art There is known a refuse collection vehicle having a chassis having a differential gear and a chassis frame, a waste storage box mounted on the chassis, and an overload detection device for detecting overload of the waste storage box. (See, for example, Patent Document 1). In this waste collection vehicle, the waste storage box frame (body frame) fixed on the chassis frame is pulled out from the inside of the chassis frame through the inside of the chassis frame, and the dust storage box can be adjusted vertically at the outside of the chassis frame. An arm fixed to the outside of the frame by a level adjustment bolt, a transmitting unit fixed to a position inside the chassis frame of the arm and transmitting a predetermined signal in the left-right direction (vehicle width direction), and a chassis of the arm It is fixed at the inner position of the frame and fixed on the differential carrier on the axle side, and the receiver to receive the signal emitted by the transmitter until the relative position between the axle and the chassis frame is in the predetermined setting position. When the relative position between the axle and the chassis frame enters a predetermined set position, passing the signal out of the signal transmission path It comprises a signal blocking portion for blocking the signal by intervening on the transmission path of the signal, and a notification unit for notifying according to the detection state of the signal by the reception section.

  With this configuration, when the weight of the waste collection vehicle increases due to the inclusion of the waste, the relative position between the axle and the chassis frame changes, and the relative position between the axle and the chassis frame becomes the overload of the waste. Alternatively, when the vehicle enters a predetermined setting position corresponding to the judgment criterion of the predetermined setting amount, the signal transmitted from the transmitting unit provided on the chassis frame side is blocked by the signal blocking unit provided on the axle side, and received. I will not reach the department. As a result, since the reception unit detects that the signal is blocked and is notified according to this detection state, it is possible to judge the overload of dust or a predetermined set amount.

Patent No. 4999655 gazette

  In the above-mentioned conventional dust collection vehicle, the transmitting part and the receiving part are respectively provided on a pair of longitudinal beams extending in the front and rear of the dust storage box, and the signal blocking part provided on the differential carrier blocks the light from the transmitting part. The presence or absence of loading is detected.

  However, the height of the signal interruption part must be changed several times while using it repeatedly due to the aged deterioration of the suspension of the chassis, etc. Fine adjustment of the height by turning a wing nut etc. is very troublesome. There is a problem of being there.

  The present invention has been made in view of such a point, and an object of the present invention is to make it easy to check the overload detection device with a simple configuration and to facilitate maintenance.

  In order to achieve the above-mentioned object, according to the present invention, the waste storage box is provided with a detection unit which directly detects the distance between the differential carrier and the detection target.

Specifically, according to the first invention, there is provided a chassis having a chassis frame supported under a foot including differential gears;
A waste storage box placed on the chassis frame;
A waste collection vehicle having an overload detection device for detecting overload of the waste storage box is assumed.

And the said overload detection apparatus is
The detection unit is provided below the bottom plate portion of the dust container box, and detects a vertical distance between the differential gear and the detection target of the differential carrier.
It is comprised so that the overload of the said dust container box may be detected from the measurement data of the said detection part.

  According to the above configuration, the detection unit of the overload detecting device provided below the bottom plate portion of the waste storage box directly detects the vertical distance between the differential carrier and the detection portion of the differential carrier. There is no need to provide a signal blocker to block the signal in case of overload and to detect the switch. For this reason, it is not necessary to perform adjustment work by turning a wing nut or the like for overload detection, it is sufficient to change the threshold of the detection distance itself, and fine adjustment work is extremely easy. In addition, since no mechanical structure such as a wing nut is required, the number of parts is reduced, the mounting operation is easy, and the maintenance is easy.

In the second invention, in the first invention,
The overload detecting device is mounted at the bottom of a cross bar extending in the vehicle width direction from the longitudinal stringer at the bottom of the dust container box so that the detection unit is positioned below the bottom of the cross bar.

  According to the above configuration, since the detection unit is positioned below the bottom of the cross bar extending in the vehicle width direction from the longitudinal beam, the detection unit can be easily confirmed from the side of the chassis, and the adjustment operation is easy.

In the third invention, in the second invention,
The above overload detecting device is provided with a warning light and a warning buzzer that light up when an overload is detected.

  According to the above configuration, when the waste container box is overloaded, the overload can be easily checked visually, and the overload can be surely recognized also from the alarm sound.

In the fourth invention, in the second or third invention,
In the overload detecting device, a display unit indicating the vertical distance to the operation unit and the detection unit is provided below the bottom of the cross bar.

  According to the above configuration, since the operation unit and the display unit are provided below the cross bar, the display unit can be easily viewed, and the operation of the operation unit can be facilitated while looking at the display unit.

  As described above, according to the present invention, the detection unit for detecting the vertical distance between the differential carrier and the detection unit is provided below the bottom plate of the dust container box, and the measurement data of this detection unit By configuring to detect the overload of the storage box, the overload detection device can be easily confirmed and maintained with a simple configuration.

It is a side view which shows an overload detection apparatus and its periphery. It is a top view which shows an overload detection apparatus and its periphery. It is a rear view which shows an overload detection apparatus and its periphery. It is an ID part enlarged plan view of FIG. 1B. It is the enlarged rear view of the ID part of FIG. 1B, and its one part disassembled view. It is a side view showing a refuse collection car concerning an embodiment of the present invention. It is a rear view showing a refuse collection car concerning an embodiment of the present invention. It is a simplified electric circuit diagram of an overload detection device.

  Hereinafter, embodiments of the present invention will be described based on the drawings.

-Configuration of the waste collection vehicle-
FIGS. 2A and 2B show a refuse collection vehicle 1 according to an embodiment of the present invention, which includes a pair of left and right chassis frames 2b supported on an undercarriage 2a including a differential gear (not shown). It has the chassis 2 which it has. On the chassis 2 is mounted a dust container box 4 having a dust input box 3 in which a dust loading device (not shown) is built in the rear.

  Specifically, the chassis frame 2b extending in the front and rear direction is supported via the suspension 2d with respect to the wheel 2c rotatably provided via the differential gear. Here, the undercarriage 2a includes, for example, a differential gear, a shaft, a wheel 2c, and the like, and has a function of absorbing vibrations during traveling as well as a traveling function. The differential gear is incorporated, for example, in a differential carrier 5 made of a cast product. As also shown in FIG. 1A to FIG. 1C, a detection target portion 5 a is formed on the upper surface of the differential carrier 5. The detected portion 5a is relatively flat compared to the surroundings, and its position detection is easy. A large number of parts such as a muffler 7 are arranged on the chassis 2.

  Then, the waste collection vehicle 1 is provided with an overload detection device 10 that detects overloading of the dust storage box 4. Specifically, the overload detection device 10 is provided below the bottom plate portion of the dust storage box 4 and includes a detection unit 11 that detects the vertical distance L between the differential carrier 5 and the detection target 5a. . Although not shown in detail, for example, the detection unit 11 is formed of a laser sensor, and includes a light emission unit and a light reception unit on the back side of the lens 11 a. That is, since the light emitting unit, the light receiving unit, etc. are provided between the pair of chassis frames 2b, as shown in FIG. 1E, for example, a cylinder further covering the lens 11a, the O ring 11b, the lens cover 11c, and the lens cover 11c. The outer cover 11d and the like have a solid protection from the collision and the adhesion of the earth and sand rising from the road surface while the vehicle is traveling. As described above, since the chassis frame 2b is supported by the undercarriage 2a (wheel 2c) via the suspension 2d, the chassis frame 2b gradually sinks as the debris is loaded in the debris storage box 4, and as a result, the detection unit The vertical distance L (shown in FIG. 1A) between the point 11 and the detection subject 5a is reduced. Therefore, when the measurement data of the detection unit 11 becomes smaller than a predetermined threshold Lmin, the overload of the dust container 4 is detected.

A vehicle body frame is provided at the bottom of the dust container 4. The vehicle body frame includes a pair of left and right upper longitudinal beams 4a attached along the bottom plate portion of the waste storage box 4, a lower longitudinal beam 4b connected to the upper longitudinal beam 4a via a dump hinge not shown, and a lower longitudinal beam And a cross bar 4c extending in the left-right direction (the vehicle width direction) from 4b. A dump cylinder 6 for tilting the waste storage box 4 is attached to the lower longitudinal girder 4b via a mounting bracket (not shown).
As shown in FIGS. 1A to 1C, the overload detection device 10 is attached to the bottom of the cross bar 4c so that the detection unit 11 is positioned below the bottom. In the present embodiment, the cross bar 4c is a hydraulic oil receiving bracket for preventing hydraulic oil and the like from the hydraulic equipment on the dust storage box 4 side from leaking to the ground, and the sensor mounting bracket 12 is provided at the bottom of the cross bar 4c. It is fixed. The sensor mounting bracket 12 extends horizontally in the vehicle width direction to a slightly opposite side of the detected portion 5a. The detection unit 11 is attached to the tip of the sensor attachment bracket 12. The cross bar 4c and the sensor mounting bracket 12 may be integrated.

As also shown in FIG. 3, the overload detection device 10 includes a warning light (PL) 10 a and a warning buzzer (BZ) 10 d that light up when an overload is detected. Further, in the overload detection device 10, a display unit 10c indicating the vertical distance L to the operation unit 10b and the detection unit 5a is provided below the bottom of the cross bar 4c. When dust and the like is thrown into the dust container box 4 and overloaded, the vertical distance L with the detected portion 5a shrinks, and the detection portion 11 detects that the vertical distance L becomes equal to or less than the predetermined threshold Lmin. Then, the relay 10 f is turned on, the warning light 10 a is lit, and an alarm is sounded by the alarm buzzer 10 d. Note that only one of the warning light 10a and the warning buzzer 10d may be provided. The alarm buzzer 10d may be provided, for example, in a driver's cab. For example, three buttons are arranged as the operation unit 10b, and programming such as setting of the threshold Lmin can be performed while looking at the display unit 10c. At this time, if the storage box main body of the dust storage box 4 is dumped together with the upper vertical girder 4a integral with the storage box main body, a space is created between the lower vertical girder 4b and the upper vertical girder 4a. The operation of the operation unit 10b can be facilitated while viewing the display unit 10b and the display unit 10c from above.
The overload switch 13 for turning on / off the power of the overload detection device 10 may be provided in the controller (not shown) of the driver's cab or the controller 3 a of the dust input box 3. The detection by the detection unit 11 is performed only when the overload switch 13 is turned on.

  In this embodiment, as shown in FIG. 1E, the detection unit 11 (lens 11a) is downward, the operation unit 10b is on the top, and the warning light 10a and the display unit 10c are facing the side of the chassis 2. A user looking into the side of the car 1 can visually check the warning light 10a and the display unit 10c. A harness 10e is connected to the opposite side of the display unit 10c, and this harness 10e serves to supply power to the detection unit 11 and the like, and to transmit a detection value obtained by the detection unit 11 to a controller (not shown). Play. For example, a controller provided at the driver's seat may display and adjust the detection vertical distance L detected by the detection unit 11, or a warning light may be provided in the controller.

-Operation of overload detection device-
Next, the operation of the overload detection device 10 according to the present embodiment will be described.

  First, as the initial setting, the minimum distance L0 of the detection target 5a is measured from the detection unit 11 when a load similar to the overload amount is applied. For example, the threshold Lmin is set at a distance slightly longer than the minimum distance L0, and while looking at the display unit 10c, the operation unit 10b is operated to input the threshold Lmin. The input operation of the threshold value Lmin may be performed, for example, by turning on the overload switch 13 every predetermined maintenance. In the present embodiment, the operation unit 10b and the display unit 10c are provided below the cross bar 4c, the display unit 10c can be easily viewed from the side, and the operation of the operation unit 10b is easy. Note that the power supply of the overload detection device 10 is turned off when it is not necessary, such as when traveling.

  Then, when performing a dust loading operation, for example, when performing a dust loading operation, the overload switch 13 is turned on to turn on the overload detection device 10. In the present embodiment, for example, the overload detection device 10 is turned on only when the PTO power supply is turned on (when the loading operation is performed). When the detection data by the detection unit 11 is within the threshold Lmin, the relay 10 f is not turned on, and power is not supplied to the warning light 10 a and the warning buzzer 10 d.

  When the dust storage box 4 approaches overload while loading dust, the detection data by the detection unit 11 reaches the threshold Lmin, the relay 10f is turned on, the warning light 10a lights, and the warning buzzer 10d rings. As a result, the worker can easily recognize an overload if it is further loaded, and the overload can be prevented by finishing the further loading.

  As described above, in the present embodiment, the detection unit 11 of the overload detection device 10 provided in the dust storage box 4 directly detects the vertical distance L between the differential carrier 5 and the detection target 5a. It is not necessary to provide a signal blocker to detect the switching of the presence or absence of a signal when overloaded, and it is not necessary to perform adjustment work by turning a butterfly net or the like for overload detection. Then, the setting of the threshold Lmin of the detection distance may be changed by the operation unit 10b, and the adjustment operation is extremely easy. In addition, since no mechanical structure such as a wing nut is required, the number of parts is reduced, the mounting operation is easy, and the maintenance is easy.

  Further, in the present embodiment, the alarm lamp 10a, the operation unit 10b, the display unit 10c, etc. are positioned below the bottom of the cross bar 4c extending in the vehicle width direction from the lower longitudinal beam 4b. It is easy to check from the side, and adjustment work is easy.

  Furthermore, in the present embodiment, when the waste storage box 4 is overloaded, not only the overload can be easily confirmed visually by the warning light 10a, but the overload can be surely recognized also from the alarm sound by the alarm buzzer 10d. .

  Therefore, according to the refuse collection vehicle 1 according to the present embodiment, the overload detection device 10 can be easily checked and maintained easily with a simple configuration.

(Other embodiments)
The present invention may be configured as follows for the above embodiment.

  That is, in the above embodiment, the detection unit 11 is configured by a laser sensor, but may be configured by an infrared sensor, a noncontact proximity sensor, or the like.

  In the above embodiment, the dust collection vehicle 1 is a so-called dump discharge type in which the dust storage box 4 is tilted by the dump cylinder 6, but the present invention is not limited to this and the discharge plate of dust in the dust storage box It is applicable also to the discharge board discharge type which has. In this case, the longitudinal girder of the vehicle body frame at the bottom of the dust container box is not integrally divided up and down like the upper girder 4a and the lower vertical girder 4b of the above embodiment but is integrally formed vertically.

  The above embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its applications and uses.

1 Garbage truck
2 chassis
2a Foot around
2b chassis frame
2c wheels
2d suspension
3 Waste input box
3a controller
4 waste storage box
4a Upper stringer
4b lower stringer
4c crossbar
5 differential carrier
5a Detected part
6 Dump cylinder
7 muffler
10 Overload detection device
10a warning light
10b Operation unit
10c Display
10d alarm buzzer
10e harness
10f relay
11 Detection unit
11a lens
11b O-ring
11c lens cover
11d outer cover
12 Sensor mounting bracket
13 Overload switch
L vertical distance
Lmin threshold

Claims (4)

A chassis having a chassis frame supported under the foot including differential gears,
A waste storage box placed on the chassis frame;
In a waste collection vehicle having an overload detection device for detecting overload of the waste storage box,
The above overload detection device
The detection unit is provided below the bottom plate portion of the dust container box, and detects a vertical distance between the differential gear and the detection target of the differential carrier.
A refuse collection vehicle characterized in that it is configured to detect overloading of the refuse storage box from the measurement data of the detection unit. In the refuse collection vehicle according to claim 1,
The overload detecting device is attached to the bottom of the cross bar extending in the vehicle width direction from the longitudinal stringer at the bottom of the dust container box so that the detection unit is positioned below the bottom of the cross bar. Garbage truck featuring. In the refuse collection vehicle according to claim 2,
The said overload detection apparatus is equipped with the warning lamp and alarm buzzer which light when it detects an overload, The refuse collection vehicle characterized by the above-mentioned. In the refuse collection vehicle according to claim 2 or 3,
The waste collection vehicle according to claim 1, wherein the overload detecting device is provided with a display unit indicating an upper and lower distance to an operation unit and the detection unit below a bottom of the cross bar.

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