JP5875891B2 - Garbage truck - Google Patents

Description

  The present invention provides a dust container reversing device that inverts a dust container in which dust is stored and throws the dust in the dust container into the dust container when garbage generated from a home or factory is put into the dust container box. It relates to a garbage collection vehicle.

  Conventionally, after holding a dust container containing dust on the support stand at the rear of the dust collection box of the garbage truck, the support stand is lifted upward together with the dust container, and the upper opening of the dust container is the opening of the dust collection box. There is known a dust container reversing device that throws the dust in the dust container into a dust box by reversing the position to the position facing (see, for example, Patent Documents 1 and 2).

  In this type of garbage collection vehicle, in order to drive the dust container reversing device, hydraulic oil is supplied by rotating the hydraulic pump by a PTO (power take-off device). In addition, a dust loading device for loading the dust thrown in from the loading port into the dust containing box is installed in the dust throwing box of this kind of dust collecting vehicle. The hydraulic oil supplied by the hydraulic pump is It is also used to drive the loading device.

JP 62-31601 A Japanese Patent No. 3143288

  As described above, in the conventional garbage collection vehicle, the dust container reversing device and the dust loading device are driven by the hydraulic oil supplied by the hydraulic pump, but the hydraulic pump is rotationally driven by the engine of the dust collection vehicle through the PTO, The engine speed is set to be constant regardless of whether the dust container reversing device or the dust loading device is operated. For this reason, the rotational speed of the hydraulic pump is substantially constant unless changes due to the load are taken into consideration.

  However, the amount of hydraulic oil required to drive the dust container reversing device is less than the amount of hydraulic oil required to drive the dust container reversing device, so a throttle is placed in the middle of the hydraulic circuit from the hydraulic pump to the dust container reversing device. The operating oil amount supplied to the dust container reversing device is adjusted by the throttle unit, and the operation speed of the dust container reversing device is controlled. For this reason, in a conventional garbage truck, energy loss occurs at this throttle part, and energy efficiency is poor.

  In addition, as a method for adjusting the amount of hydraulic oil, it is conceivable that two hydraulic pumps are provided and the number of hydraulic pumps is changed between when the dust loading device is driven and when the dust container reversing device is driven. In such a structure in which two hydraulic pumps are provided, there is a problem that the number of parts increases and the cost increases. There is also a problem that maintenance is poor.

  Therefore, in the present invention, in the garbage collection vehicle that drives the dust container reversing device and the dust loading device with the hydraulic oil generated by the hydraulic pump, the amount of hydraulic oil can be reduced without generating energy loss even though the configuration is simple. The object is to provide a garbage truck that has been adjusted to improve energy efficiency.

  The refuse collection vehicle of the present invention includes a dust storage box mounted on a chassis, a dust storage box connected to the dust storage box and having an opening of a dust input opening, a reversing hydraulic actuator, and a dust container. A dust container reversing device that reverses the upper opening to the position facing the dust inlet of the dust input box, and a dust loading box equipped with a hydraulic actuator for loading, and the dust input from the dust inlet is A dust loading device for loading into the storage box, a reversing hydraulic actuator and a hydraulic pump for supplying hydraulic oil for operating the loading hydraulic actuator, an electric motor for rotating the hydraulic pump, and a dust container reversing device during driving And a control device that controls the rotational speed of the electric motor to be different between when the dust loading device is driven.

  According to the present invention, the operating oil is required from the hydraulic pump when driving the dust container reversing device by lowering the number of revolutions of the electric motor for the dust container reversing device which does not require the operating oil as much as the dust loading device when driving. Only a limited amount can be supplied.

  Here, the control device switches the rotation speed of the electric motor between when the dust container reversing device is driven and when the dust loading device is driven, in conjunction with the operation switch of the dust container reversing device and the operation switch of the dust loading device. It is desirable to do so.

  As a result, the rotation speed of the electric motor is automatically switched between the operation of the dust container reversing device and the operation switch of the dust loading device when the dust container reversing device is driven and when the dust loading device is driven. This eliminates the need for the operator to switch the rotation speed of the electric motor.

  In addition, when the control device detects that the rotational speed of the electric motor has reached the set rotational speed for driving the dust container reversing device after the operation switch of the dust container reversing device is operated, It is desirable to drive the actuator.

  As a result, when the rotation speed of the electric motor is higher than the set rotation speed for driving the dust container reversing device, even if the operation switch of the dust container reversing device is operated, the rotation speed of the electric motor is The dust container reversing device does not operate until the set rotational speed for driving is lowered, and operates when the rotational speed of the electric motor reaches the set rotational speed for driving the dust container reversing device.

  Further, it is desirable that the control device continues to drive the electric motor until a predetermined time elapses after the dust container reversing operation by the dust container reversing device is completed.

  Thus, after the dust container reversing operation by the dust container reversing device is completed, when the dust container reversing operation is continuously performed, the rotation speed of the electric motor is changed from the set rotation speed for driving the dust container reversing device to the dust loading device. It is only necessary to increase to the set rotational speed for driving, and it becomes possible to operate the dust loading apparatus more quickly than when the rotational speed is 0 to the set rotational speed for driving the dust loading apparatus.

  In addition, the waste collection vehicle of the present invention has an operation switch for the dust container reversing device, an operation switch for the dust loading device, and a rotational speed of the electric motor for driving the dust loading device in the vicinity of the dust inlet. It is desirable to have a setting changeover switch that switches to the number of revolutions or the set number of revolutions for driving the dust container reversing device.

  Thus, when the operator continuously operates the operation switch of the dust container reversing device and the operation switch of the dust loading device in the vicinity of the dust input port, it is also provided in the vicinity of the dust input port. By operating the setting changeover switch, the rotation speed of the electric motor can be easily switched from the setting rotation speed for driving the dust container reversing device to the setting rotation speed for driving the dust loading device.

(1) Dust container reversal that does not require hydraulic oil at the time of driving because of the configuration in which the rotational speed of the electric motor is different between when the dust loading device is driven and when the dust container reversing device is driven By reducing the rotation speed of the electric motor, the hydraulic oil can be supplied from the hydraulic pump only in the required amount when the dust container reversing device is driven. Thus, conventionally, the operation speed of the dust container reversing device is controlled. Therefore, the throttle portion provided for the purpose can be eliminated, and the energy efficiency can be improved by adjusting the amount of hydraulic oil without causing energy loss. In addition, since the configuration is simpler than the case where two hydraulic pumps are provided to adjust the amount of hydraulic oil, the cost can be reduced and the maintainability is excellent.

(2) The control device switches the rotation speed of the electric motor between when the dust loading device is driven and when the dust container reversing device is driven, in conjunction with the operation switch of the dust loading device and the operation switch of the dust container reversing device. Thus, the operator does not need to perform the operation of switching the rotation speed of the electric motor, and can easily perform work without worrying about the rotation speed of the electric motor.

(3) When the control device detects that the rotational speed of the electric motor has reached the set rotational speed for driving the dust container reversing device after the operation switch of the dust container reversing device is operated, By driving the hydraulic actuator of the reversing device, when the rotational speed of the electric motor is higher than the set rotational speed for driving the dust container reversing device, the dust container reversing device operates as it is and moves quickly. Can be prevented.

(4) After the end of the reversing operation of the dust container by the dust container reversing device, the control device continues to drive the electric motor until a predetermined time elapses. When the dust loading operation is subsequently performed, the dust loading device can be quickly operated, and workability is improved.

(5) In the vicinity of the dust inlet, the operation switch of the dust container reversing device, the operation switch of the dust loading device, and the rotational speed of the electric motor are set to the set rotational speed for driving the dust loading device or the dust container reversing device. By having a setting changeover switch that switches to the set rotational speed for driving, the operator can operate the operation switch of the dust container reversing device in the vicinity of the dust inlet, the setting changeover switch that switches the rotational speed of the electric motor, and the dust loading operation By operating the operation switch, it is possible to easily perform the operation from reversing the dust container to loading the dust.

It is a side view of the electric garbage collection vehicle in embodiment of this invention. FIG. 2 is an enlarged view of the rear part of the electric dust collection vehicle of FIG. 1. FIG. 2 is a partially enlarged side view of a rear portion of the electric dust collection vehicle of FIG. 1. It is sectional drawing which shows an electrical component storage box and its periphery. It is a block diagram which shows the drive system of an electric dust collection vehicle. It is a hydraulic circuit diagram of an electric garbage collection vehicle. It is an operation | movement flowchart of the electric motor at the time of transfering from a loading operation to a dust container inversion operation. It is an operation | movement flowchart of the electric motor at the time of shifting to a dust container inversion operation | movement from a stop state. It is an operation | movement flowchart of the electric motor at the time of shifting to a loading operation from a dust container inversion operation | movement. It is a figure which shows the change of the rotation speed of an electric motor. It is a side view of an electric garbage collection vehicle provided with a setting changeover switch.

  1 is a side view of an electric dust collection vehicle according to an embodiment of the present invention, FIG. 2 is an enlarged rear view of the electric dust collection vehicle of FIG. 1, and FIG. 3 is a partial enlarged side view of the rear of the electric dust collection vehicle of FIG. is there.

  In FIG. 1, an electric dust collection vehicle 1 as a compression-type dust collection vehicle according to an embodiment of the present invention has a dust container 3 mounted on a chassis 2. A driver's cab 2 a is provided in front of the chassis 2. The rear opening 4 of the dust container 3 is provided with a dust input box 5 that is pivotally supported by an input box support pin 5a above it. The dust box 5 can be tilted about the input box support pin 5a by a rotating cylinder 9 as a hydraulic actuator for discharge provided between the dust container 3 and the dust box 5. It is configured.

  As shown in FIG. 2, a substantially rectangular dust inlet 6 is opened at the rear of the dust inlet box 5. The dust box 5 is provided with an open / close door 7 for opening and closing the dust inlet 6. The open / close door 7 is slidable in the vertical direction, and can move to the dust inlet 6 to open the dust inlet 6. In addition, a dust container reversing device 40 for holding and reversing the dust container C in which dust is accommodated and feeding the dust in the dust container C into the dust throwing box 5 is provided behind the dust throwing inlet 6. It has been.

  As shown in FIG. 3, the dust container reversing device 40 is provided at the lower end edge of the dust input port 6 of the dust input box 5. A bracket 41 is fixed to the lower part of the side surface of the dust box 5. The bracket 41 extends obliquely rearward and upward. An upper end portion of a lift arm 42 that lifts the dust container C is pivotally supported by a pin 43 at the distal end portion of the bracket 41.

  Further, a base end portion of a container reversing cylinder 44 as a reversing hydraulic actuator is pivotally supported at the base end portion of the bracket 41. The rod end of the container reversing cylinder 44 is pivotally supported in the middle of the lift arm 42, and the lift arm 42 is configured to rotate around the pin 43 by the expansion / contraction operation of the container reversing cylinder 44. The lift arm 42 is provided with a lock device 45 that holds the dust container C. The bracket 41, the lift arm 42, the container reversing cylinder 44, and the lock device 45 are provided symmetrically on both side surfaces of the garbage throwing box 5. Further, the operation switch 46 of the dust container reversing device 40 is provided on the side surface of the dust container box 5 and in the vicinity of the dust container inlet 6 as shown in FIG.

  In addition, a dust-type dumping device 20 is provided inside the dust-feeding box 5. The dust loading device 20 is for compressing the dust D thrown into the dust throwing box 5 through the dust throwing port 6 and loading it into the dust container 3. As shown in FIG. 1, the operation switch 49 of the dust loading device 20 is provided on the side surface of the dust input box 5 and in the vicinity of the dust input port 6.

  In addition, as shown in FIG. 2, guide groove members 21 are laid on both side walls of the dust throwing box 5 from the front upper part toward the rear lower part also serving as a reinforcing frame. A sliding plate 22 that extends to the full width is accommodated in the dust box 5. Guide rollers 23 are rotatably provided above and below the left and right side edges of the sliding plate 22. These guide rollers 23 are slidably fitted along the inner wall of the guide groove member 21.

  Further, a sliding plate support shaft 25 is inserted into the boss portions 24 at the left and right end portions of the rear upper portion of the sliding plate 22. The sliding plate support shaft 25 protrudes from the inside of the dust box 5 to the outside through the sliding opening 5 b formed in the side wall of the dust box 5 in accordance with the sliding distance of the sliding plate 22. Are arranged as follows.

  Further, between the sliding plate support shaft 25 projecting outward from the left and right side walls of the dust input box 5 and the lower part of the dust input box 5, the guide groove member 21 is inclined to the outside of the left and right dust input boxes 5, respectively. Sliding cylinders 26 are connected as hydraulic actuators for loading provided along the roads. The sliding plate 22 reciprocates up and down along the guide groove member 21 by the expansion and contraction operation of the sliding cylinder 26. As shown in FIG. 1, side covers 5c are detachably provided on the left and right side walls of the dust box 5, and the sliding cylinder 26 is provided between the side wall and the side cover 5c. ing.

  In addition, a compression plate 27 that extends to the full width of the dust box 5 is supported at the lower end of the sliding plate 22 so as to be swingable back and forth. The tip of the compression plate 27 is slightly bent toward the front. Further, on the left and right back surfaces of the compression plate 27, connection portions 27a are projected. Oscillating cylinders 28 as loading hydraulic actuators are connected between the left and right connecting portions 27a and the left and right ends of the sliding plate support shaft 25, respectively. By the expansion / contraction operation of the swing cylinder 28, the compression plate 27 swings back and forth.

  As shown in FIG. 2, the dust container 3 is provided with a discharge device 29 that discharges the dust in the dust container 3. Specifically, the discharge device 29 includes the above-described rotating cylinder 9 that tilts the dust input box 5, the discharge plate 30 that is slidable in the front-rear direction in the dust container 3, and a telescopic operation. A discharge cylinder 34 is provided as a discharge hydraulic actuator for moving the discharge plate 30 in the front-rear direction of the chassis 2.

  As shown in FIGS. 1 and 4, a rectangular parallelepiped electrical component storage box 50 is provided on the chassis 2 between the cab 2 a and the dust storage box 3. The electrical component storage box 50 stores a control device 60, an electric double layer capacitor 51 as a power storage device, an inverter 52, an electric motor 53, and the like. Specifically, the electric motor 53 is arranged on the lower left and right side of the rectangular parallelepiped electrical component storage box 50. For example, four electric double layer capacitors 51 are arranged side by side. An inverter 52 is arranged on the opposite side of the electric motor 53, and the electric motor 53 and the inverter 52 are electrically connected to each other. An automatic voltage regulator 54 for adjusting the voltage of a generator 59, which will be described later, and a contactor box 55 for turning on / off the inverter 52 are provided above the electric motor 53 and on the left and right center sides of the electrical component storage box 50. It has been. Directly above the electric motor 53, a control device 60 and a touch panel 56 for various operations are provided on the surface thereof. In addition, the electric wire which connects between each electric equipment is abbreviate | omitted for simplification.

  As shown in FIG. 5, the electric dust collection vehicle 1 includes a transmission 58 that is driven by a vehicle engine 57. Further, the electric garbage collection vehicle 1 includes a generator 59 driven by the vehicle engine 57. The electric power obtained by the generator 59 is supplied to the inverter 52 via the electric double layer capacitor 51 or the direct control device 60 via the automatic voltage regulator 54 accommodated in the electrical component storage box 50, and thereafter The electric motor 53 is adjusted by the inverter 52 and supplied to the electric motor 53.

  FIG. 6 shows a hydraulic circuit of the hydraulic device 70 of the electric garbage truck 1 according to the embodiment of the present invention. The hydraulic device 70 includes a hydraulic pump 61 that is driven by the electric motor 53. The hydraulic pump 61 includes a sliding cylinder 26 and a swing cylinder 28 that are loading hydraulic actuators that drive the dust loading device 20, and a container reversing cylinder 44 that is a reversing hydraulic actuator that drives the dust container reversing device 40. The hydraulic oil for operating the rotation cylinder 9 and the discharge cylinder 34 which are the discharge hydraulic actuators for driving the discharge device 29 is supplied. The hydraulic pump 61 is a swash plate type variable displacement type that tilts the swash plate to vary the discharge flow rate, and is composed of, for example, a variable displacement piston pump. As shown in FIG. 4, the hydraulic pump 61 is disposed so as to be exposed downward from the electrical component storage box 50, and is directly connected to an output shaft 53 a that extends directly below the electric motor 53. In addition, a hydraulic oil tank 62 in which hydraulic oil flowing through the hydraulic pump 61 is stored is provided below and behind the electrical component storage box 50. The hydraulic oil tank 62 and the hydraulic pump 61 are connected by a hydraulic pipe 63.

  The hydraulic oil in the hydraulic oil tank 62 is sucked up by the hydraulic pump 61 through the hydraulic pipe 63, distributed to the supply-side hydraulic pipe 73 a, and supplied to the control valve 72. Each cylinder 9, 26, 28, 34, 44 is connected to a control valve 72 via a hydraulic pipe 73c. The hydraulic oil that has passed through the control valve 72 is circulated through the recovery-side hydraulic pipe 73 b, filtered by the return filter 65, and then collected again in the hydraulic oil tank 62.

  The control valve 72 is controlled by the control device 60. As shown in FIG. 6, an operation switch 46 of the garbage container reversing device 40 and an operation switch 49 of the dust loading device 20 are connected to the control device 60. The operation switch 46 of the dust container reversing device 40 includes a container reversing switch 46 a for reversing the container reversing cylinder 44. In addition, the operation switch 49 of the dust loading device 20 has the loading switch 49a and the sliding plate 22 lowered by sequentially reversing, lowering, compressing and raising the sliding plate 22 and the compression plate 27. The lowering switch 49b, the raising switch 49c for raising the sliding plate 22, the reversing switch 49d for reversing the compression plate 27, and the stop switch 49e for stopping the dust loading device 20 are included. The control device 60 expands and contracts each cylinder 26, 28, 44 by controlling the control valve 72 according to the operation of each of these operation switches 46, 49.

  Next, operations of the dust container reversing device 40 and the dust loading device 20 will be described.

  First, the worker places the dust container C containing the waste in the vicinity of the dust container reversing device 40 and puts it in a locked state by the lock device 45. Thereafter, when the container reversing switch 46a is operated to turn on the operation signal of the garbage container reversing device 40, the control device 60 switches the control valve 72 so that the working oil is supplied in the direction in which the container reversing cylinder 44 extends. . Thereby, the container reversing cylinder 44 is extended, the lift arm 42 is rotated upward, the dust container C is reversed, and the upper opening of the dust container C is directed downward to the dust inlet 6 of the dust container 5. At first, the dust in the dust container C is put into the dust box 5. Thereafter, the control device 60 switches the control valve 72 so that the hydraulic oil is supplied in the direction in which the container reversing cylinder 44 is retracted. As a result, the container reversing cylinder 44 is retracted, the lift arm 42 rotates downward, the dust container C returns to the original position, and the dust container reversing operation ends.

  Next, when the operator operates the loading switch 49a to turn on the operation signal of the dust loading device 20, the control device 60 controls the hydraulic oil to be supplied in the direction in which the swing cylinder 28 is retracted. The valve 72 is switched. As a result, the swinging cylinder 28 is retracted and the compression plate 27 is reversely operated to reach the reverse end position (reverse process). Next, when the control device 60 switches the control valve 72 so that the operation is supplied in the direction in which the sliding cylinder 26 is retracted, the sliding cylinder 26 is retracted and the sliding plate 22 is lowered. Thus, the compression plate 27 is lowered (lowering step).

  Thereafter, when the compression plate 27 reaches the lowering end position, the control device 60 switches the control valve 72 so that hydraulic oil is supplied in the direction in which the swing cylinder 28 extends. As a result, the swing cylinder 28 extends and the compression plate 27 swings forward (compression process). When the compression plate 27 swings to the compression end position, the control device 60 switches the control valve 72 so that the operation is supplied in the direction in which the sliding cylinder 26 extends. Thereby, the sliding cylinder 26 extends and the compression plate 27 rises (the ascending step). When the compression plate 27 reaches the rising end position, the series of loading operations is finished.

  Note that when the lowering switch 49b, the raising switch 49c, or the reversing switch 49d is operated, only the lowering process, the raising process, or the reversing process described above are performed. When the stop switch 49e is operated, the control device 60 stops the flow of hydraulic oil. Thereby, the sliding cylinder 26 and the swing cylinder 28 are stopped, and the operations of the sliding plate 22 and the compression plate 27 are stopped.

  As described above, in the electric dust collection vehicle 1 according to the present embodiment, the dust container C in which the dust is stored is held in the dust container reversing device 40 and inverted, and the dust in the dust container C is put into the dust input box 5. Then, the dust loading device 20 repeats the dust loading operation with one cycle of reversing, lowering, compressing and ascending, so that the dust D thrown into the dust throwing box 5 through the dust throwing port 6 is dumped. The container 3 can be loaded. At this time, in the electric garbage collection vehicle 1 in the present embodiment, the control device 60 sets the inverter 52 so that the rotational speed of the electric motor 53 is different between when the dust container reversing device 40 is driven and when the dust loading device 20 is driven. Control.

  Next, the operation of the electric motor 53 will be described based on the flowcharts of FIGS. 7 to 9 and the diagram showing the change in the rotational speed of the electric motor 53 of FIG. As shown in FIG. 6, an electric motor rotation sensor 53 a that detects the rotation speed of the electric motor 53 is connected to the control device 60.

  FIG. 7 is an operation flowchart of the electric motor 53 when shifting from the loading operation to the dust container reversing operation. When the loading switch 49a is turned ON in step S01, in step S02, the control device 60 sets the rotation speed of the electric motor 53 to the set rotation speed B for driving the dust loading apparatus 20, and in step S03 The operation signal of the motor 53 is turned ON. At this time, the control device 60 controls the inverter 52 so that the rotation speed of the electric motor 53 detected by the electric motor rotation sensor 53a becomes the set rotation speed B.

  At the same time, in step S04, the control device 60 turns on the operation signal of the dust loading device 20, and performs the dust loading operation of the dust loading device 20 for one cycle as described above. Next, when the operation signal of the refuse loading device 20 is not OFF in step S05, when the container reversing switch 46a is turned ON in step S06, the control device 60 sets the rotational speed of the electric motor 53 to the dust accumulation in step S07. The setting rotational speed B for driving the loading device 20 is changed to the setting rotational speed A for driving the dust container reversing device 40.

  Thereby, the control device 60 controls the inverter 52 to decelerate the rotation of the electric motor 53. When the electric motor rotation sensor 53a detects that the rotation speed of the electric motor 53 has reached the set rotation speed A in step S08, the control device 60 turns on the operation signal of the dust container reversing device 40 in step S09. As described above, the dust container reversing operation of the dust container reversing device 40 is performed for one cycle. After the end of the dust container reversing operation, in step S10, the control device 60 turns off the operation signal of the electric motor 53, and the electric motor 53 stops.

  FIG. 8 is an operation flowchart of the electric motor 53 when shifting from the stopped state to the dust container reversing operation. When the container reversing switch 46a is turned on in step S11, the control device 60 sets the rotational speed of the electric motor 53 to the set rotational speed A for driving the dust container reversing device 40 in step S12, and in step S13 The operation signal of the motor 53 is turned ON. At this time, the control device 60 controls the inverter 52 so that the rotation speed of the electric motor 53 detected by the electric motor rotation sensor 53a becomes the set rotation speed A.

  At the same time, in step S14, the control device 60 turns on the operation signal of the dust container reversing device 40, and performs the dust container reversing operation of the dust container reversing device 40 for one cycle as described above. After the end of the dust container reversing operation, in step S15, the control device 60 turns off the operation signal of the electric motor 53, and the electric motor 53 stops.

  FIG. 9 is an operation flowchart of the electric motor 53 when shifting from the dust container reversing operation to the loading operation. When the container reversing switch 46a is turned ON in step S21, the control device 60 sets the rotational speed of the electric motor 53 to the set rotational speed A for driving the dust container reversing device 40 in step S22, and in step S23, the electric motor 53 The operation signal of the motor 53 is turned ON. At this time, the control device 60 controls the inverter 52 so that the rotation speed of the electric motor 53 detected by the electric motor rotation sensor 53a becomes the set rotation speed A.

  At the same time, in step S24, the control device 60 turns on the operation signal of the dust container reversing device 40, and performs the dust container reversing operation of the dust container reversing device 40 as described above for one cycle. Next, when the loading switch 49a is turned ON after the dust container reversing operation is completed (YES in step S25), the operation of the electric motor 53 changes depending on how much time has elapsed after the dust container reversing operation is finished. To do. That is, the electric motor 53 continues to operate at the set rotational speed A until a waiting time of a predetermined second elapses after the dust container reversing operation ends. If the loading switch 49a is turned ON before this waiting time has elapsed (NO in step S26, YES in step S41), in step S42, the control device 60 changes the rotational speed of the electric motor 53 to the dust container reversal. The setting rotational speed A for driving the device 40 is changed to the setting rotational speed B for driving the dust loading device 20. In step S31, the control device 60 turns on the operation signal of the dust loading device 20, and performs the dust loading operation of the dust loading device 20 for one cycle.

  On the other hand, when the predetermined waiting time has elapsed in step S26 without turning on the loading switch 49a, the control device 60 turns off the operation signal of the electric motor 53 in step S27, and the electric motor 53 stops. Next, when the loading switch 49a is turned ON in step S28, in step S29, the control device 60 sets the rotation speed of the electric motor 53 to the set rotation speed B for driving the dust loading apparatus 20, and step In S30, the operation signal of the electric motor 53 is turned ON. At this time, the control device 60 controls the inverter 52 so that the rotation speed of the electric motor 53 detected by the electric motor rotation sensor 53a becomes the set rotation speed B.

  At the same time, in step S31, the control device 60 turns on the operation signal of the dust loading device 20, and performs the dust loading operation of the dust loading device 20 for one cycle as described above. After the dust loading operation in step S31, the control device 60 turns off the operation signal of the electric motor 53 in step S32, and the electric motor 53 stops.

  When the loading switch 49a is turned ON during the dust container reversing operation (NO in step S25, YES in step S41), in step S42, the control device 60 sets the rotation speed of the electric motor 53 to the dust container. The setting rotational speed A for driving the reversing device 40 is changed to the setting rotational speed B for driving the dust loading device 20. In step S31, the control device 60 turns on the operation signal of the dust loading device 20, and performs the dust loading operation of the dust loading device 20 for one cycle.

  As described above, in the electric waste collection vehicle 1 according to the present embodiment, the hydraulic motor 53 can be hydraulically operated by reducing the rotational speed of the electric motor 53 with respect to the dust container reversing device 40 that does not require hydraulic oil as much as the dust loading device 20 when driven. Hydraulic oil is supplied from the pump 61 in a necessary amount when the dust container reversing device 40 is driven. Therefore, in this electric garbage collection vehicle 1, the throttle part conventionally provided for controlling the operation speed of the dust container reversing device is unnecessary, and the energy is adjusted by adjusting the amount of hydraulic oil without causing energy loss. Efficiency has improved.

  Further, as described above, in the electric garbage collection vehicle 1 in the present embodiment, the rotation speed of the electric motor 53 is switched between when the dust container reversing device 40 is driven and when the dust loading device 20 is driven. Since the operation is performed in conjunction with the loading switch 49a which is the operation switch 49 of the apparatus 40 and the container reversing switch 46a which is the operation switch 46 of the garbage loading apparatus 20, the operator performs an operation of switching the rotation speed of the electric motor 53. There is no need. In the present embodiment, an example in which the operation switch 49 is linked to the loading switch 49a has been described. However, the operation of the lowering switch 49b, the raising switch 49c, or the reverse switch 49d is the same as that of the loading switch 49a. is there.

  Moreover, in the electric garbage collection vehicle 1 in this embodiment, as demonstrated in FIG. 7, after the control apparatus 60 operated the container inversion switch 46a of the garbage container inversion apparatus 40, the rotation speed of the electric motor 53 is garbage. When the electric motor rotation sensor 53a detects that the set rotational speed A for driving the container reversing device 40 is reached, the container reversing cylinder 44 of the dust container reversing device 40 is driven to perform the reversing operation.

  That is, when the rotation speed of the electric motor 53 is higher than the set rotation speed A for driving the dust container reversing device 40, the rotation of the electric motor 53 is performed even if the container reversing switch 46a of the dust container reversing device 40 is operated. The dust container reversing device 40 does not operate until the number decreases to the setting rotational speed A for driving the dust container reversing device 40, and the rotational speed of the electric motor 53 is the set rotational speed for driving the dust container reversing device 40. Since it operates when A is reached, after the loading operation of the dust loading device 20, when the rotation speed of the electric motor 53 is high, the dust container reversing device 40 is prevented from operating as it is and quickly moving. Yes.

  Moreover, in the electric garbage collection vehicle 1 in this embodiment, as demonstrated in FIG. 9, after the reversing operation | movement of the dust container C by the dust container reversing apparatus 40 is complete | finished by the control apparatus 60 until the predetermined time passes. Continue to drive. Therefore, when the dust container reversing operation of the dust container C is completed by the dust container reversing device 40, when the dust loading operation is continuously performed, the rotational speed of the electric motor 53 is changed from the set rotational speed A for driving the dust container reversing device 40 to the dust. It is only necessary to increase to the set rotational speed B for driving the loading device 20, and the dust loading device 20 is operated more quickly than when the rotational speed is 0 to the set rotational speed A for driving the dust loading device 20. The workability is improved.

  As described above, in the electric garbage collection vehicle 1 in the present embodiment, the rotation speed of the electric motor 53 is switched between when the dust container reversing device 40 is driven and when the dust loading device 20 is driven. The operation is performed in conjunction with the loading switch 49a which is the operation switch 49 of the apparatus 40 and the container reversing switch 46a which is the operation switch 46 of the garbage loading apparatus 20, and these are manually switched to the respective set rotational speeds A or B. A configuration including a setting changeover switch is also possible.

  FIG. 11 is a side view of an electric garbage truck equipped with a setting changeover switch. As shown in FIG. 11, like the operation switches 46 and 49 of the dust loading device 20 and the dust container reversing device 40, in the electric dust collecting vehicle 1a provided with the setting changeover switch 47 in the vicinity of the dust inlet 6, A person can operate the operation switches 46 and 69 and the setting changeover switch 47 in the vicinity of the dust inlet 6 to easily perform from dust container reversal to dust loading.

  Moreover, although the said embodiment demonstrated the case where the dust loading apparatus 20 was a compression type, a dust loading apparatus is made into a garbage throwing box by the cooperative action of the rotation operation of a rotating plate, and the rocking | fluctuation operation of a pushing plate. It may be a rotating plate type in which the thrown-in dust is loaded into a dust storage box.

  The dust collection vehicle of the present invention is useful as a dust collection vehicle having a dust loading device for loading the dust thrown into the dust throwing box into the dust containing box, and in particular, by reversing the dust container containing the garbage. The present invention is suitable as a dust collection vehicle equipped with a dust container reversing device for putting dust in a dust container into a dust box.

DESCRIPTION OF SYMBOLS 1,1a Electric dust collection vehicle 2 Car base 2a Driver's cab 3 Dust storage box 4 Back opening part 5 Dust input box 5a Input box support pin 6 Dust input port 7 Opening / closing door 9 Turning cylinder 20 Dust loading device 22 Sliding plate 26 Slide cylinder 27 Compression plate 28 Swing cylinder 29 Discharge device 30 Discharge plate 34 Discharge cylinder 40 Dust container reversing device 41 Bracket 42 Lift arm 43 Pin 44 Container reversing cylinder 45 Locking device 46, 49 Operation switch 46a Container reversing switch 47 Setting switching Switch 49a Loading switch 49b Down switch 49c Up switch 49d Reverse switch 49e Stop switch 50 Electrical component storage box 51 Electric double layer capacitor 52 Inverter 53 Electric motor 53a Electric motor rotation sensor 59 Generator 60 Controller 61 Hydraulic pump 0 Hydraulic equipment 72 control valve

Claims (4)

A waste bin mounted on the chassis,
A dust input box that is connected to the dust storage box and has an open dust input port;
A dust container reversing device having a reversing hydraulic actuator and reversing the dust container to a position where an upper opening of the dust container faces the dust inlet of the dust input box;
A dust loading device equipped in the dust throwing box, having a loading hydraulic actuator, and loading the dust thrown from the dust throwing port into the dust containing box;
A hydraulic pump for supplying hydraulic oil for operating the reversing hydraulic actuator and the loading hydraulic actuator;
An electric motor driven by electric power supplied from the power storage device, and an electric motor for rotationally driving the hydraulic pump;
A control device that controls the rotational speed of the electric motor to be different between when the dust container reversing device is driven and when the dust loading device is driven, and after the reversing operation of the dust container by the dust container reversing device is completed A garbage collection vehicle having a control device that continues to drive the electric motor until a predetermined time elapses .   The control device switches the number of revolutions of the electric motor between when the dust container reversing device is driven and when the dust loading device is driven, and the operation switch of the dust container reversing device and the operation of the dust loading device. The refuse collection vehicle according to claim 1, which is performed in conjunction with a switch.   When the control device detects that the rotational speed of the electric motor has reached the set rotational speed for driving the dust container reversing device after the operation switch of the dust container reversing device is operated, The garbage truck according to claim 1 or 2, which drives a reversing hydraulic actuator. In the vicinity of the dust inlet, the operation switch of the dust container reversing device, the operation switch of the dust loading device, and the rotational speed of the electric motor are set to the set rotational speed for driving the dust container reversing device or the dust claim 1 Symbol placement refuse collection vehicles having a setting changeover switch for switching the setting rotational speed for driving the loading device.

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