JP2007191288A - Garbage collecting vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a garbage collecting vehicle capable of efficiently using the energy without any waste. <P>SOLUTION: The garbage collecting vehicle J comprises a drum D having spiral blades 10, 11, a lid C having a spiral immobile guide blade 15 for closing one end opening part of the drum D to guide the garbage in the drum D, a hydraulic motor 1 for rotating the drum D, and a pump 2 for feeding the hydraulic pressure to the hydraulic motor 1, and the garbage collecting vehicle J is capable of compressing the garbage by the rotation of the drum D. The rotational speed of the drum D is adjusted based on the torque for rotating the drum D or the discharge pressure of the pump 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement of a garbage truck.

  2. Description of the Related Art Conventionally, in a garbage truck, a drum that is mounted on a truck mount and has a spiral blade on the inner peripheral side, a stationary guide blade that closes the opening end of the drum and guides the dust into the drum. And a driving source for rotationally driving the drum.

  In the garbage collection vehicle as described above, when the dust is thrown in, the drum is rotated while the dust is thrown in from the rear of the drum. Then, the dust thrown into the drum is guided to the guide blade, and is sent to the inside of the drum by the blade on the inner periphery of the drum, and is stored in the drum (for example, see Patent Document 1). ).

  Also, in this garbage collection vehicle, after the drum is fully filled with dust, the drum is continuously driven to rotate and the dust is newly put into the drum, so that the dust is compressed. It is possible to pack in.

In addition, the drum has a drive source that outputs a driving force by the engine power of the truck when the drum is driven to rotate. Specifically, this drive source takes out the engine power via a PTO (Power Take Off) and rotates it. And a hydraulic motor driven by receiving hydraulic pressure supplied from the hydraulic pump, and the drum is rotated by transmitting the output torque of the hydraulic motor to the drum (for example, Patent Documents) 2).
Japanese Utility Model Publication No. 56-92603 (from page 3, line 11 to page 6, line 6, Fig. 1) JP 2001-48306 A (see paragraph 0005)

  In the garbage collection vehicle described above, after the dust is fully filled in the drum, it is possible to collect a larger amount of dust by further introducing and compressing the dust. In order to compress the dust by rotating the drum, a larger torque is required. In the conventional garbage collection vehicle that uses the engine power to rotate the drum, the rotation speed of the drum is set constant. During the dust collection operation, the engine was always made to work so that the torque required to rotate the drum could be generated when the dust was compressed to the maximum.

  In other words, the power (horsepower) output from the truck engine can be obtained even when the dust is not fully filled in the drum or the dust is not compressed to the maximum extent, as shown in FIG. Because it is always fixed to the horsepower required when the dust is compressed to the maximum, the work output from the engine is not used to the maximum and is wasted. The trash collection vehicle wasted energy and was inefficient.

  Accordingly, the present invention has been developed to improve the above-described problems, and an object of the present invention is to provide a garbage disposal vehicle that can efficiently use energy without waste.

  In order to achieve the above-mentioned object, the first problem solving means in the present invention includes a drum having a spiral blade, and a spiral immovable member that closes one end opening of the drum and guides dust into the drum. In a garbage collector that includes a lid provided with a guide blade, a hydraulic motor that rotationally drives the drum, and a pump that supplies hydraulic pressure to the hydraulic motor, and is capable of compressing dust by rotating the drum, The discharge flow rate of the pump is adjusted based on the torque for rotating the drum.

  The second problem-solving means of the present invention includes a drum having a spiral blade, a lid having a spiral immovable guide blade that closes one end opening of the drum and guides dust in the drum. In a garbage collection vehicle that includes a hydraulic motor that rotationally drives the drum and a pump that supplies hydraulic pressure to the hydraulic motor, and is capable of compressing the dust by rotating the drum, based on the discharge pressure of the pump Adjust the pump discharge flow rate.

  Furthermore, a third problem solving means in the present invention includes a drum provided with a spiral blade, a lid provided with a spiral immovable guide blade that closes one end opening of the drum and guides dust into the drum. A dust collecting vehicle that includes a hydraulic motor that rotationally drives the drum and a pump that supplies hydraulic pressure to the hydraulic motor, and is capable of compressing the dust by the rotation of the drum. Adjust the drum rotation speed.

  The fourth problem-solving means in the present invention includes a drum having a spiral blade, a lid having a spiral immovable guide blade that closes one end opening of the drum and guides dust into the drum. In a garbage collection vehicle that includes a hydraulic motor that rotationally drives the drum and a pump that supplies hydraulic pressure to the hydraulic motor, and is capable of compressing the dust by rotating the drum, based on the discharge pressure of the pump Adjust the drum rotation speed.

  According to the present invention, the work rate of the pump drive source for rotating the drum is kept constant, and before the dust is compressed, the drum rotation speed is kept high. The rotation speed of the drum is reduced to such an extent that the drum can be continuously rotated in accordance with the torque for rotating the drum or the discharge pressure of the pump so that the dust can be compressed.

  Therefore, if the power source of the drive source is set to be the same as that of a conventional dust collector, the drum rotation speed is higher than the drum rotation speed of the conventional dust collector without wasting the work of the drive source during the dust collection operation. The dust collection work will be done at speed.

  In addition, the amount of dust thrown into the drum is grasped by the torque that rotates the drum or the discharge pressure of the pump, and the rotation speed of the drum is controlled, so the work of the drive source is efficiently thrown into the drum. Assigned to the drive source, so that the drive source does not perform useless work.

  Further, since the work of the drive source can be consumed without waste in the dust collection work, the work time in the dust collection work can be shortened, the fuel consumption can be improved, and the energy is saved.

  The present invention will be described below based on the illustrated embodiment. FIG. 1 is a schematic view of the garbage truck in the first embodiment. FIG. 2 is a diagram illustrating an example of a system configuration of the garbage truck according to the first embodiment. FIG. 3 is a view of the garbage truck in the first embodiment as viewed from the rear. FIG. 4 is a schematic view of a cutting device for a garbage truck in the first embodiment. FIG. 5 is a flowchart illustrating an example of a control procedure when adjusting the discharge flow rate of the pump in the garbage truck according to the first embodiment. FIG. 6 is a diagram illustrating changes in drum rotation speed and drum rotation torque with respect to time in the garbage truck according to the first embodiment. FIG. 7 is a diagram illustrating a system configuration of the garbage truck according to a modification of the first embodiment. FIG. 8 is a flowchart illustrating an example of a control procedure for adjusting the discharge flow rate of the pump in the garbage truck according to the second embodiment. FIG. 9 is a diagram showing changes in drum rotation speed and drum rotation torque with respect to time in the garbage truck according to the second embodiment.

  As shown in FIGS. 1 and 2, the garbage truck J in the first embodiment includes a vehicle V, a drum D that is rotatably mounted on a frame of the vehicle V, and one end opening of the drum D. A lid C that is closed, a hydraulic motor 1 that rotationally drives the drum D, a pump 2 that supplies hydraulic pressure to the hydraulic motor 1, a vehicle V that is mounted on the vehicle V and that serves as a drive source for driving the pump 2. The engine E includes a cutting device S that cuts dust and throws dust into the drum D, and a control unit 3 that controls the hydraulic motor 1, the pump 2, and the cutting device S.

  In more detail, the drum D has a cylindrical shape and is provided with spiral blades 10 and 11 on the inner periphery, and the other end of the drum D is attached to the shaft 1a of the hydraulic motor 1. The drum D is connected via a speed reducer (not shown), and is driven to rotate by the hydraulic motor 1. When the drum D is rotated to one side by the hydraulic motor 1, the dust thrown into the drum D can be fed into the drum D by the blades 10 and 11, and the drum D is rotated to the other side. The dust in the drum D can be discharged from the drum D by the blades 10 and 11.

  One end opening end of the drum D is closed with a lid C. The lid C is provided with an inlet 12 so that dust can be put into the drum D as shown in FIG. In addition, a discharge port 13 is provided so that dust can be discharged by the rotation of the drum D.

  Further, returning to FIG. 1, a hollow truncated cone-shaped inner cylinder 14 is erected on the side of the lid C facing the inside of the drum D, and the blades 10, 11 are disposed on the outer periphery of the inner cylinder 14. A stationary blade 15 is provided in a spiral shape that is reversely wound. A notch 14a is provided on the lower base end side of the inner cylinder 14, and the dust thrown from the inlet 12 can be put into the drum D through the notch 14a.

  Specifically, the lid C is fixed to the vehicle V by being attached to the rear end of the drum cover DC that covers the entire drum D, and the stationary blade 15 also rotates with the drum D. 10 and 11 is immovable with respect to the inner cylinder 14 by the immovable blade 15 and is thrown up above the inner cylinder 14 by the rotating blades 10 and 11 with the rotating blade 10 and 11 to the inside of the drum D. Can be sent in quickly.

  Further, when the dust is put into the drum D after the inside of the drum D is filled with the dust, the blades 10 and 11 compress the dust with the blades 10 and 11 and send them to the inside of the drum D. 15 and the blades 10 and 11 that scrape up the dust thrown into the inlet 12 make a space for newly throwing dust directly under the inlet 12 in the drum D, and the dust flows back to the inlet 12. To prevent it from happening.

  Therefore, it is possible to compress and store the dust in the drum D by the blades 10 and 11, the stationary blade 15 and the lid C.

  As described above, the drum D is rotationally driven by the hydraulic motor 1 so that the dust can be charged and discharged. The shaft 1a has a torque for rotating the drum D. (Hereinafter referred to as “drum rotation torque”) is provided with a torque sensor 4, and the drum rotation torque detected by the torque sensor 4 is output to the control unit 3 as a voltage signal. Yes.

  Further, the hydraulic motor 1 is specifically set such that, for example, the capacity is changed and the rotation speed is changed by changing the tilt angle.

  Further, the pump 2 for supplying the hydraulic pressure to the hydraulic motor 1 is connected to the engine E of the vehicle V via a PTO (Power Take Off) (not shown), and the rotational motion of the crankshaft of the engine E is transmitted. And is driven to rotate. A speed reducer may be provided between the PTO and the pump 2.

  The pump 2 is specifically configured as an axial bidirectional pump that changes the discharge direction and the discharge flow rate by changing the inclination angle of a swash plate cam (not shown). The hydraulic motor 1 connected via the loop-shaped pipe line 20 can be rotated forward and backward, respectively. That is, the drum D can be rotated forward and backward.

  The swash plate cam of the pump 2 is specifically changed by, for example, a servo cylinder. The discharge direction and the discharge flow rate of the hydraulic pump 2 are detected by the capacity sensor 5 and input to the control unit 3. The control unit 3 can control the discharge direction and the discharge flow rate of the pump 2 by driving the servo cylinder using the capacity detected by the capacity sensor 5 as feedback.

  The pump 2 for supplying the hydraulic pressure to the hydraulic motor 1 is set as a bidirectional discharge and variable discharge flow rate pump as described above, but this is used as a gear pump and the power of the PTO is variable in the reduction ratio. The discharge flow rate may be made variable via the speed reducer. In this case, a switching valve is provided to switch the hydraulic pressure supply direction to the hydraulic motor 1 so that the hydraulic motor 1 rotates forward and backward. Just keep it.

  The engine E is controlled in rotational speed by a throttle adjusting device (not shown) that receives an engine rotational speed command signal from the control unit 3 and adjusts the opening of a throttle valve (not shown) of the engine E. .

  The rotational speed of the engine E is detected by the engine rotational speed sensor 6, and the engine rotational speed output from the rotational speed sensor 6 is input to the control unit 3.

  Then, the control unit 3 outputs the engine rotation speed command signal to the throttle adjustment device by using the engine rotation speed as feedback to control the throttle adjustment device, and basically stops the vehicle and collects dust. The rotational speed of the engine E is controlled to an arbitrary constant value. Note that the engine speed of the arbitrary fixed value is an arbitrary value that can exert a torque that can compress the dust put into the drum D to the maximum extent.

  Therefore, even when the garbage collection vehicle is stopped, if the drum D needs to be driven to rotate, the control unit 3 controls the throttle adjusting device so that the rotational speed of the engine E is set to the above arbitrary constant value. This allows the engine E to output a constant torque.

  If the engine E is equipped with an electronically controllable governor, the engine speed can be adjusted by sending a signal to the governor, so the throttle adjusting device is not necessary.

  In addition, the throttle may be fixed so that the rotational speed of the engine E can be manually maintained at the above-mentioned arbitrary constant value without performing the rotational speed control of the engine E by the control unit 3. .

  In turn, the cutting device S drives the housing H, a pair of relatively rotatable shafts 30 and 31 provided with a plurality of blades 32 on the outer periphery, and the shafts 30 and 31, as shown in FIGS. And a pump 34 for supplying hydraulic pressure to the hydraulic motor 33. The blades 32 of one shaft 30 and the blades 32 of the other shaft 31 are alternately arranged. Yes.

  In the cutting device S, when dust is introduced between the shafts 30 and 31 using a work table B1 rotatably provided on the front side of the housing H on the right side in FIG. 4 is sent to the rear side of the cutting device S, which is to the left in FIG. 4 while shearing and cutting the dust with the blades 32 that rotate in the direction of the arrow in the figure. In addition, the cutting device S is attached to the vehicle V so that the insertion port 12 of the lid C is located on the back side thereof, and the insertion port provided on the rear surface of the housing H on the left side in the drawing. 12 can be guided and put into the drum D by the guide plate B2 desired.

  Specifically, as shown in FIG. 2, the pump 34 is driven by the power of the engine E through the PTO similarly to the pump 2 and can adjust the discharge direction and the discharge flow rate. The rotational speed of the hydraulic motor 33 can be adjusted by adjusting the discharge flow rate of the pump 34. Note that this pump 34 may be a gear pump.

  Furthermore, although not shown, the output shaft of the hydraulic motor 33 is transmitted to the shafts 30 and 31 via a speed reducer. As shown in FIG. 4, the shaft 30 is used to cut dust. When the shaft 31 is rotated counterclockwise in the direction of the arrow in the figure, and the dust is clogged between the blades 32 or between the shafts 30, 31 and the blade 32, on the contrary. In order to discharge the dust, the shafts 30 and 31 can be rotated in the direction opposite to the rotation direction described above.

  Therefore, the driving source of the cutting device S is the traveling engine E. The cutting device S can adjust the cutting speed of the dust by adjusting the rotational speed of the shafts 30 and 31, and the shaft It is possible to adjust the dust throwing speed at which the dust is thrown into the drum D by adjusting the rotation speeds 30 and 31.

  One of the shafts 30 and 31 is provided with a shaft rotational speed sensor 35 for detecting the rotational speed. The shaft rotational speed detected by the shaft rotational speed sensor 35 is input to the control unit 3. The controller 3 can control the dust throwing speed of the cutting device S by adjusting the discharge flow rate of the pump 34 using the shaft rotation speed as feedback.

  Subsequently, the control unit 3 receives signals output from the torque sensor 4, the capacity sensor 5, the engine rotation speed sensor 6, and the shaft rotation speed sensor 35, and the tilt angle of the hydraulic motor 1, the discharge flow rate and discharge of the pump 2. As long as it can output current or voltage as a control signal necessary for adjusting the direction, the rotational speed of the engine E, and the discharge flow rate and discharge direction of the pump 34, for example, hardware Although not shown, an amplifier for amplifying each signal and control signal, a converter for converting an analog signal into a digital signal, an arithmetic unit such as a CPU (Central Processing Unit), a ROM (Read Only Memory), etc. The hydraulic motor 1, the pump 2, the engine E, and the pump Processing procedures and control signal output procedure required for controlling the 4 is configured as a well-known computer system that allowed to pre-stored in the ROM or other storage device as a program.

  Specifically, the control unit 3 controls the solenoid of the solenoid valve that can supply hydraulic pressure to a servo cylinder that adjusts the tilt angle of the hydraulic motor 1 and the tilt angle of the swash plate cam of the pump 2 (not shown). A control voltage or a control current is output to drive and control the hydraulic motor 1 and the pumps 2 and 34, and in the present embodiment, the rotational speed of the engine E is controlled.

  Further, in the present embodiment, as shown in FIG. 2, a notification means is provided separately from the above configuration, and the notification means includes an LED (Light Emitting Diode) 40 and a speaker 41. The control procedure for controlling the operation of the LED 40 and the speaker 41 is stored in the storage device of the control unit 3.

  Among the above notification means, the LED 40 can be lit at the end of the dust collection work to indicate the end of the work to the worker and notify the end of the work. The speaker 41 is connected to the LED 40 by voice or any sound. Similarly, work completion notification can be performed.

  In addition, it may replace with LED40 and may provide the display apparatus which can display the said work completion notification by displaying a character, a picture, etc. In this case, a display apparatus is comprised with the graphic controller which controls a display and a display. What is necessary is just to use LCD (Liquid Crystal Display), electroluminescence, CRT (Cathode Ray Tube) etc. as a display.

  And the control part 3 comprised as mentioned above controls the hydraulic motor 1 and the pumps 2 and 34 according to the control procedure shown in FIG. 5, and maintains the rotational speed of the engine E arbitrarily and constant. Control as follows. Further, this control procedure is stored in the storage device of the control unit 3 in advance as described above.

  Basically, the hydraulic motors 1 and 33 and the pumps 2 and 34 are controlled by the control unit 3, but the operator of the garbage collector can directly rotate the rotation direction of the drum D and the cutting device S by an operation device (not shown). The rotation speed can be controlled.

  Hereinafter, the control procedure in the control unit 3 will be described. First, the worker starts the dust collection work, specifically, the drum D is rotated in the direction in which the dust is introduced, and the dust is cut in the direction in which the dust is cut. When the shafts 30 and 31 in the device S are rotated, the control procedure shown in FIG. 5 is executed.

  During execution of the above control procedure, the control unit 3 controls the engine E so that the rotational speed of the engine E is maintained at an arbitrary constant value so that a constant torque can be transmitted to the pumps 2 and 34, and dust collection is performed. Until the dust is filled in the drum D after the operation is started, the drum D is rotated at the highest possible speed by the torque of the engine E output under the condition of a constant rotation speed, and the cutting device S The dust cutting speed is also maintained so that the dust does not overflow from the inlet 12 of the drum D and can flow backward.

  Specifically, the rotational speed of the drum D from the start of the dust collection operation until the dust is filled in the drum D is the speed at which the dust throwing speed of the cutting device S is fed into the drum D. The rotation speed is set to be somewhat slower than the maximum speed that can be realized by the constant torque output from the engine E while being synchronized. The torque output from the engine E is set to be equal to or higher than the torque that should be output from the engine E when the dust in the drum D is compressed to the maximum.

  In step F1, the control unit 3 determines whether the drum rotation torque, that is, the torque detected by the torque sensor 4 is equal to or greater than a predetermined value.

  The predetermined torque value that serves as a reference for the determination is set to a torque value that can sufficiently recognize that the dust is being compressed. That is, after the dust is fully charged in the drum D, the dust is further charged in the drum D, and the dust charged in the drum D is compressed while maintaining the rotation speed of the drum D. As the volume ratio (the volume of dust after compression / the volume of dust before compression) decreases, that is, the torque increases in accordance with the decrease in the porosity of the dust, the dust is compressed in the drum D by the above judgment. You can determine whether it has started.

  Note that the drum rotation torque also varies depending on the weight of the dust put into the drum D. Therefore, by setting the predetermined value of the torque to a value exceeding the range of such torque variation, the dust can be compressed. It is possible to accurately determine whether or not it is being performed.

  Further, the rotational speed of the drum D from the start of the dust collection work until the dust is filled in the drum D is set to a rotational speed that is slower than the maximum speed that can be realized by the constant torque output from the engine E. Since the output torque of the engine E has a margin, even if the dust is compressed and the drum rotation torque is increased, the rotation of the drum D is stopped and the operation cannot be continued. Has been avoided.

  Subsequently, if the drum rotational torque is not equal to or greater than the predetermined value in Step F1, the dust is not yet compressed, so that the control unit 3 maintains the rotational speed of the drum D and cuts the drum D. The rotation speed of the shafts 30 and 31 of the apparatus S is continuously maintained, and the determination of step F1 is repeated.

  On the other hand, when the drum rotational torque becomes equal to or larger than the predetermined value in Step F1, the process proceeds to Step F2, and in Step F2, the control unit 3 discharges the pump 2 according to the drum rotational torque detected by the torque sensor 4. Control to reduce the flow rate. That is, control is performed such that the discharge flow rate of the pump 2 is reduced to reduce the rotation speed of the hydraulic motor 1 and the rotation speed of the drum D.

  Specifically, after considering the torque for rotating the shafts 30 and 31 necessary for the cutting process in the cutting device S, the pump 2 and the hydraulic motor 1 are driven by the output torque of the engine E to rotate the drum D. The rotational speed of the drum D is reduced to such an extent that the dust can be continuously compressed. Note that the rotational speed of the drum D is reduced as compared with before dust compression, but is set as high as possible within a range in which the drum rotational torque required for dust compression can be output.

  When setting the discharge flow rate of the pump 2, the control unit 3 first calculates a torque value sufficient to continue rotating the drum D from the drum rotation torque detected by the torque sensor 4. Note that the calculated torque value is larger than the torque with a margin so that the rotation of the drum D will not stop because the drum rotation torque increases as the rotation of the drum D continues. Is calculated as follows.

  The calculated torque value, the tilt angle of the hydraulic motor 1, the torque required for the cutting device S, between the hydraulic motor 1 and the drum D, the shafts 30 and 31 of the cutting device S and the liquid The discharge flow rate of the pump 2 is calculated from the reduction ratio of the speed reducer interposed between the pressure motor 33 and the control unit 3 controls the servo cylinder of the pump 2 to realize the calculated discharge flow rate. To control the discharge flow rate of the pump 2. Specifically, the control unit 3 performs feedback control using the discharge flow rate detected by the capacity sensor 5 as feedback when controlling the discharge flow rate of the pump 2. When a speed reducer is interposed between the PTO and the pump 2, it is natural that the speed reduction ratio of the speed reducer is taken into account when calculating the discharge flow rate of the pump 2.

  In addition, the controller 3 decreases the rotational speed of the drum D, and synchronizes the dust throwing speed of the cutting device S with the speed of feeding the dust of the drum D in step F3.

  That is, as the rotational speed of the drum D decreases, the speed at which the dust is fed into the drum D decreases, so in step F3, the dust input speed of the cutting device S is decreased, and the dust enters the inlet 12 of the drum D. Keep it from overflowing from the back. In controlling the cutting device S, the control unit 3 determines the speed at which the dust on the drum D is sent inward from the discharge flow rate detected by the capacity sensor 5, the reduction ratio of each reduction gear, and the tilt angle of the hydraulic motor 1. It calculates and determines the dust throwing speed of the cutting device S.

  Then, in order to realize the determined dust throwing speed, the rotational speed of the hydraulic motor 33 is adjusted by using the rotational speed detected by the rotational speed sensor 35 as feedback to control the rotational speed of the shaft.

  Therefore, the work output from the engine E is spent on the rotation of the drum D without waste other than the driving of the cutting device S.

  Further, since the dust throwing speed of the cutting device S is synchronized with the speed at which the dust on the drum D is fed inward, the labor of manually switching the dust throwing speed of the cutting device S by the rotation speed of the drum D can be saved. Easily collect dust.

  Furthermore, it transfers to step F4 and the control part 3 judges whether a drum rotational torque becomes more than a preset notification reference value. Here, the drum rotation torque increases as the dust compression proceeds, and this drum rotation torque is proportional to the internal pressure of the drum D. Therefore, the notification reference value is such that the drum D does not exceed an allowable pressure. Set to torque value.

  If it is determined in step F4 that the drum rotational torque does not exceed the notification reference value, the control procedure of steps F2 and F3 is repeated, and the torque flow rate of the pump 2 is determined by the torque sensor 4 at that time. The discharge flow rate of the pump 2 is controlled based on the drum rotation torque to be output, and the dust throwing speed of the cutting device S is controlled in step F3.

  On the other hand, if it is determined in step F4 that the drum rotation torque exceeds the notification reference value, the process proceeds to step F5, and the LED 40 is turned on to display the end of the dust collection work on the LED 40 as the notification means. In order to notify the speaker 41 of the end of the dust collection work, a warning sound or the like is generated on the speaker 41.

  Therefore, the operator can know that no more dust can be put into the drum D by the work end notification of the notification means, and the operator looks into the drum D during the dust collecting work and collects the dust. It is possible to eliminate the trouble of confirming the amount of input, and to prevent the situation that the amount of input varies due to the experience and intuition of the operator and the dust cannot be collected efficiently.

  That is, according to the garbage collection vehicle J, the rotational speed and the torque of the engine E are constant, the power (horsepower) output from the engine E is constant, and before the dust is compressed, the rotational speed of the drum D is set. When the dust is started to be compressed, the discharge flow rate of the pump 2 is decreased according to the drum rotation torque, so that the rotation speed of the drum D is increased to such an extent that the rotation of the drum D can be continued and the dust can be compressed. Decrease linearly.

  In this embodiment, when the work rate (horsepower) of the engine E is set to be the same as that of the conventional garbage collection vehicle, the work of the engine E is wasted during the dust collection work as shown in FIG. Instead, the dust collection operation is performed at a drum rotation speed (solid line in FIG. 6) higher than the drum rotation speed of the conventional garbage collection vehicle indicated by a broken line in FIG.

  Therefore, since the amount of dust thrown into the drum D is grasped by torque and the discharge flow rate of the pump 2 is controlled, the work amount of the engine E is efficiently allocated to the dust throwing work into the drum D, and the drum The engine E which is a driving source is not made useless work.

  In addition, since the work of the engine E that is the drum drive source can be consumed without waste in the dust collection work, the work time in the dust collection work can be shortened. In other words, when the speed at which the dust is thrown into the drum D is synchronized with the speed at which the dust at the drum D is conveyed inward, the drum D necessary for maximizing the dust thrown into the drum D is compressed. The rotational speed of the drum D is determined during the dust collection operation by the above control, and the rotational speed of the drum D is faster than that of the conventional garbage collector. The rotational speed of the drum is the rotational speed required to compress the dust to the maximum. However, it reaches faster in time than conventional garbage trucks.

  Furthermore, since it is possible to shorten the work time in the dust collection work, the fuel consumption can be improved and the energy is saved.

  In the above description, the drum rotational torque is detected by the torque sensor 4 and controlled to adjust the discharge flow rate of the pump 2 based on the drum rotational torque. Therefore, the discharge flow rate of the pump 2 may be controlled based on the discharge pressure of the pump 2.

  In this case, in order to detect the discharge pressure of the pump 2, for example, as shown in FIG. 7, a pressure sensor 21 is provided in the middle of the pipe line 20, and the pressure sensor 21 detects the discharge pressure of the pump 2. In the control unit 3, when the discharge pressure of the pump 2 becomes equal to or higher than the predetermined value in step F1, the process proceeds to step F2 where the discharge flow rate of the pump 2 is adjusted based on the discharge pressure of the pump 2 and the drum D What is necessary is just to control the rotational speed of.

  Further, when adjusting the rotational speed of the drum D, in addition to adjusting the discharge flow rate of the pump 2, the tilt angle is adjusted by calculating the tilt angle of the hydraulic motor 1 in step F2, and the hydraulic motor 1 is adjusted. The rotation speed itself may be controlled, and further, the reduction ratio of each reduction gear may be calculated in step F2 to adjust the reduction ratio.

  Further, in step F2, the drum D is calculated by calculating the discharge flow rate, or when adjusting the rotational speed of the drum D by the hydraulic motor 1, by changing the tilt angle or by changing the reduction ratio of each reduction gear. When adjusting the rotation speed, calculate the reduction ratio, or when adjusting the drum rotation speed using a combination of these, calculate the discharge flow rate, tilt angle, and reduction ratio. Rather than calculating from the discharge pressure of the pump 2 or the pump 2, the map is tested in advance so that the discharge flow rate, the tilt angle, or the reduction ratio can be uniquely determined using the drum rotation torque and the discharge pressure of the pump 2 as parameters. If the calculation in step F2 is performed using the map, it is possible to reduce the burden of calculation processing of the calculation device in the control unit 3. , Can be manufactured at low cost refuse collection vehicles J utilized becomes possible for inexpensive computing device.

  In order to adjust the rotation speed of the drum D, a rotation speed sensor that directly detects the rotation speed of the drum D itself is provided, and the drum rotation speed detected by the rotation speed sensor is used as feedback for each reduction ratio. The change, the discharge flow rate of the pump 2, the tilt angle of the hydraulic motor 1, etc. may be controlled.

  And about the dust throwing speed of the cutting device S, in the place mentioned above, the control part 3 controls the dust throwing speed of the cutting device S based on the discharge flow rate of the pump 2 detected by the capacity | capacitance sensor 5 in step F3. However, since the dust throwing speed may be synchronized with the speed at which the dust of the drum D is fed into the contents, a drum rotational speed sensor for detecting the rotational speed of the drum D is provided, and the dust rotational speed is based on the drum rotational speed. The dust throwing speed may be adjusted, and the drum rotation speed depends on the discharge flow rate of the pump 2 and the discharge flow rate of the pump 2 is adjusted based on the drum rotation torque. The charging speed may be adjusted, and as described above, the drum rotation torque depends on the discharge pressure of the pump 2, and therefore, the dust rotation is based on the discharge pressure. It may be adjusted poured speed.

  Subsequently, the garbage truck in the second embodiment will be described. The garbage truck J in the second embodiment is different only in the control of the rotational speed of the drum, and the configuration is the same as that shown in FIG. Therefore, in the description of the present embodiment, the same components are denoted by the same reference numerals, and detailed description thereof will be omitted.

  Hereinafter, the control procedure in the control unit 3 will be described. In the control in the second embodiment, the control procedure is executed according to the control procedure shown in FIG. First, when the operator starts the dust collection work, specifically, when the drum D is rotated in the direction of throwing in the dust and the shafts 30 and 31 in the cutting device S are rotated in the direction of cutting the dust, The control procedure shown in FIG.

  During the execution of the control procedure, as in the first embodiment, the control unit 3 maintains the rotational speed of the engine E at an arbitrary constant value and transmits a constant torque to the pumps 2 and 34. The drum D can be controlled with the torque of the engine E that is output under the condition of a constant rotation speed until the dust is filled in the drum D after the dust collection operation is started. While rotating as fast as possible, the dust cutting speed of the cutting device S is also maintained so that dust does not overflow from the inlet 12 of the drum D and cannot flow backward. Specifically, the rotational speed of the drum D from the start of the dust collection operation until the dust is filled in the drum D is the speed at which the dust throwing speed of the cutting device S is fed into the drum D. The rotation speed is set to be somewhat slower than the maximum speed that can be realized by the constant torque output from the engine E while being synchronized. The torque output from the engine E is set to be equal to or higher than the torque that should be output from the engine E when the dust in the drum D is compressed to the maximum.

  In step F11, the control unit 3 determines whether or not the discharge pressure of the pump 2, that is, the pressure detected by the pressure sensor 21 is equal to or higher than a predetermined value.

  The predetermined value of the pressure used as the reference for the determination is set to a pressure value at which it is possible to sufficiently recognize that the dust is being compressed. That is, after the dust is fully charged in the drum D, the dust is further charged in the drum D, and the dust charged in the drum D is compressed while maintaining the rotation speed of the drum D. Since the discharge pressure of the pump 2 increases as the volume ratio decreases, it is possible to determine whether or not dust compression has started in the drum D based on the above determination.

  Since the discharge pressure varies depending on the weight of the dust put into the drum D, the dust is compressed by setting the predetermined value of the pressure to a value exceeding the range of the pressure variation. It is possible to accurately determine whether or not

  Further, the rotational speed of the drum D from the start of the dust collection work until the dust is filled in the drum D is set to a rotational speed that is slower than the maximum speed that can be realized by the constant torque output from the engine E. Since the output torque of the engine E has a margin, even if the dust is compressed and the discharge pressure of the pump 2 increases, that is, the torque required for the rotation of the hydraulic motor 1 increases, Invitation to the situation where the rotation stops and the work cannot be continued is avoided.

  Subsequently, when the discharge pressure of the pump 2 is not equal to or higher than the predetermined value in Step F11, the dust is not compressed yet, so that the control unit 3 maintains the rotational speed of the drum D and cuts the drum D. The rotation speed of the shafts 30 and 31 of the device S is continuously maintained, and the determination in step F11 is repeated.

  On the other hand, when the discharge pressure of the pump 2 becomes equal to or higher than the predetermined value in step F11, the process proceeds to step F12. In step F12, the control unit 3 determines the pump 2 based on the discharge pressure of the pump 2 detected by the pressure sensor 21. Control is performed to reduce the discharge flow rate. That is, control is performed such that the discharge flow rate of the pump 2 is reduced to reduce the rotation speed of the hydraulic motor 1 and the rotation speed of the drum D.

  Specifically, after considering the torque for rotating the shafts 30 and 31 necessary for the cutting process in the cutting device S, the pump 2 and the hydraulic motor 1 are driven by the output torque of the engine E to rotate the drum D. The rotational speed of the drum D is decreased so that the dust can be continuously compressed to an arbitrary volume ratio.

  That is, in step F12, the discharge flow rate of the pump 2 is decreased until the discharge pressure required when the dust is compressed to an arbitrary volume ratio by calculating backward from the output torque of the engine E, and the drum D Reduce the rotation speed.

  When setting the discharge flow rate of the pump 2, the control unit 3 is necessary when the drum D that has been preset and stored in the storage device is continuously rotated to compress the dust to an arbitrary volume ratio. The discharge pressure value (hereinafter referred to as “discharge pressure threshold”) is read, the discharge pressure threshold, the tilt angle of the hydraulic motor 1, the torque required for the cutting device S, the hydraulic motor 1 and the drum D , The discharge flow rate of the pump 2 is calculated from the reduction ratios of the reduction gears interposed between the PTO and the pump 2, between the shafts 30 and 31 of the cutting device S and the hydraulic motor 33. The unit 3 controls the discharge flow rate of the pump 2 by sending a control signal to the servo cylinder of the pump 2 in order to realize the calculated discharge flow rate.

  Specifically, the control unit 3 performs feedback control using the discharge flow rate detected by the capacity sensor 5 as feedback when controlling the discharge flow rate of the pump 2.

  In addition, the controller 3 decreases the rotational speed of the drum D, and synchronizes the dust throwing speed of the cutting device S with the speed of feeding the dust of the drum D in step F13.

  That is, as the rotational speed of the drum D decreases, the speed at which the dust is fed into the drum D decreases, so in step F13, the dust input speed of the cutting device S is decreased, and the dust is input to the input port 12 of the drum D. Keep it from overflowing from the back. In controlling the cutting device S, the control unit 3 determines the speed at which the dust on the drum D is sent inward from the discharge flow rate detected by the capacity sensor 5, the reduction ratio of each reduction gear, and the tilt angle of the hydraulic motor 1. It calculates and determines the dust throwing speed of the cutting device S.

  Then, in order to realize the determined dust throwing speed, the rotational speed of the hydraulic motor 33 is adjusted by using the rotational speed detected by the rotational speed sensor 35 as feedback to control the rotational speed of the shaft.

  Further, in step F14, it is determined whether or not the discharge pressure of the pump 2 has reached the discharge pressure threshold value. When the discharge pressure of the pump 2 has not reached the threshold value, the control unit 3 maintains the discharge flow rate of the pump 2 at the discharge flow rate calculated in Step F12 and continues the same control as in Step F13. The determination in step F14 is repeated.

  On the other hand, when the discharge pressure of the pump 2 reaches the above-described discharge pressure threshold value, the process proceeds to step F15. In step F <b> 15, the control unit 3 performs control to further reduce the discharge flow rate of the pump 2 based on the discharge pressure of the pump 2 detected by the pressure sensor 21. That is, control is performed such that the discharge flow rate of the pump 2 is made smaller than the discharge flow rate calculated in Step F12 to further reduce the rotation speed of the hydraulic motor 1 and further decrease the rotation speed of the drum D.

  Specifically, after considering the torque for rotating the shafts 30 and 31 necessary for the cutting process in the cutting device S, the pump 2 and the hydraulic motor 1 are driven by the output torque of the engine E to rotate the drum D. The rotational speed of the drum D is reduced so that the dust can be continuously compressed to the maximum.

  That is, in step F15, the discharge flow rate of the pump 2 is decreased until the discharge pressure required when dust is compressed to the maximum by calculating backward from the output torque of the engine E, and the rotation of the drum D is performed. Reduce speed.

  When the discharge flow rate of the pump 2 is set, the control unit 3 discharges the discharge pressure that is required when the drum D that has been set in advance and stored in the storage device is continuously rotated to compress the dust to the maximum. Value (hereinafter referred to as “maximum discharge pressure value”), the maximum discharge pressure value, the tilt angle of the hydraulic motor 1, the torque required for the cutting device S, the hydraulic motor 1 and the drum D The discharge flow rate of the pump 2 is calculated from the reduction ratio of the speed reducer interposed between the PTO and the pump 2, between the shafts 30 and 31 of the cutting device S and the hydraulic motor 33. 3 sends a control signal to the servo cylinder of the pump 2 to realize the calculated discharge flow rate, thereby controlling the discharge flow rate of the pump 2.

  Specifically, the control unit 3 performs feedback control using the discharge flow rate detected by the capacity sensor 5 as feedback when controlling the discharge flow rate of the pump 2.

  In addition, the controller 3 decreases the rotational speed of the drum D, and synchronizes the dust throwing speed of the cutting device S with the speed of feeding the dust of the drum D in step F16.

  That is, as the rotational speed of the drum D further decreases, the speed at which the dust is fed into the drum D is further decreased. In step F16, the dust throwing speed of the cutting device S is decreased accordingly, It is maintained so that it cannot overflow due to overflow from the inlet 12 of the drum D. In controlling the cutting device S, the control unit 3 determines the speed at which the dust on the drum D is sent inward from the discharge flow rate detected by the capacity sensor 5, the reduction ratio of each reduction gear, and the tilt angle of the hydraulic motor 1. It calculates and determines the dust throwing speed of the cutting device S.

  Then, in order to realize the determined dust throwing speed, the rotational speed of the hydraulic motor 33 is adjusted by using the rotational speed detected by the rotational speed sensor 35 as feedback to control the rotational speed of the shaft.

  Therefore, in the second embodiment, control for switching the rotational speed of the drum D to high speed, medium speed, and low speed is performed according to the discharge pressure of the pump 2, and the work output by the engine E is as follows: Other than driving the cutting device S, the drum D is consumed without waste.

  Further, since the dust throwing speed of the cutting device S is synchronized with the speed at which the dust on the drum D is fed inward, the labor of manually switching the dust throwing speed of the cutting device S by the rotation speed of the drum D can be saved. Easily collect dust.

  Furthermore, it transfers to step F17 and the control part 3 judges whether the discharge pressure of the pump 2 becomes more than the notification reference value set beforehand. Here, as described above, the discharge pressure of the pump 2 increases as the dust compression proceeds, and this discharge pressure is proportional to the internal pressure of the drum D. Therefore, the notification reference value exceeds the pressure that the drum D can accept. The discharge pressure value is set so as not to exist.

  If it is determined in step F17 that the discharge pressure of the pump 2 does not exceed the notification reference value, the discharge flow rate of the pump 2 is maintained at the discharge flow rate calculated in step F15 and calculated in step F16. The cutting device S is controlled so as to maintain the dust throwing speed, and the determination in step F17 is repeated.

  On the other hand, when the discharge pressure of the pump 2 exceeds the notification reference value in the determination of step F17, the process proceeds to step F18, and the LED 40 is turned on to display the end of the dust collection work on the LED 40 as the notification means, Further, a warning sound or the like is generated on the speaker 41 to notify the speaker 41 of the end of the dust collection work.

  Therefore, the operator can know that no more dust can be put into the drum D by the work end notification of the notification means, and the operator looks into the drum D during the dust collecting work and collects the dust. It is possible to eliminate the trouble of confirming the amount of input, and to prevent the situation that the amount of input varies due to the experience and intuition of the operator and the dust cannot be collected efficiently.

  That is, according to the garbage collection vehicle J, the rotational speed and the torque of the engine E are constant, the power (horsepower) output from the engine E is constant, and before the dust is compressed, the rotational speed of the drum D is set. Maintaining high speed and starting dust compression, the discharge flow rate of the pump 2 is reduced stepwise in accordance with the discharge pressure of the pump 2 so that the rotation of the drum D can be continued and the dust can be compressed smoothly. In this way, the rotation speed of the drum D is controlled to be switched between high speed, medium speed, and low speed. In the present embodiment, the rotational speed of the drum D is switched to three stages of high speed, medium speed, and low speed, but it may be switched to multiple stages of four or more stages.

  In the garbage truck in the second embodiment, as described above, as the dust compression progresses, the rotation speed of the drum D is sequentially switched from the high speed to the medium speed and from the medium speed to the low speed. When the degree of compression of the drum D is advanced, the drum D is switched to a low speed. Therefore, the operator puts dust into the drum D with the switching of the rotational speed of the drum D to a low speed. In this embodiment, the notification means can be omitted. Even if the notification means is omitted, the operator looks into the drum D during the dust collection operation. In addition, it is possible to prevent the situation where the amount of input varies due to the experience and intuition of the operator and the dust cannot be collected efficiently. is there.

  Also in the second embodiment, when the work rate (horsepower) of the engine E is set to be the same as that of the conventional garbage collection vehicle, the work of the engine E is performed during the dust collection work as shown in FIG. The waste collection operation is performed at a drum rotation speed (solid line in FIG. 9) higher than the drum rotation speed of the conventional garbage collection vehicle indicated by a broken line in FIG. 9 without wasting the amount.

  Therefore, also in this embodiment, since the amount of dust put into the drum D is grasped by the discharge pressure and the discharge flow rate of the pump 2 is controlled, the work amount of the engine E is efficiently transferred to the drum D. The engine E, which is a drum drive source, is not made useless work.

  In addition, since the work of the engine E that is the drum drive source can be consumed without waste in the dust collection work, the work time in the dust collection work can be shortened.

  Furthermore, since it is possible to shorten the work time in the dust collection work, the fuel consumption can be improved and the energy is saved.

  In the above, the discharge pressure of the pump 2 is detected by the pressure sensor 21, and the discharge flow rate of the pump 2 is controlled based on this discharge pressure. Therefore, in the calculation processes of Step F12 and Step F15, the drum rotation torque value and the dust required for compressing the dust previously determined and stored in the storage device to an arbitrary volume ratio are maximized. Control may be made so that the discharge flow rate of the pump 2 is adjusted based on the drum rotational torque required for compression to the limit. In this case, the configuration of the garbage collection vehicle J is the configuration shown in FIGS. That's fine.

  Also in the second embodiment, when adjusting the rotational speed of the drum D, in addition to adjusting the discharge flow rate of the pump 2, the tilt angle of the hydraulic motor 1 is calculated in steps F12 and F15. In this way, the tilt angle can be adjusted to control the rotational speed itself of the hydraulic motor 1, and further, the speed reduction ratio of each speed reducer can be calculated in Step F12 and Step F15. You may make it carry out by adjusting ratio.

  Further, similarly, in step F12 and step F15, when calculating the discharge flow rate, or when adjusting the rotational speed of the drum D with the hydraulic motor 1, the calculation of the tilt angle, or the reduction ratio of each reduction gear. When the rotation speed of the drum D is adjusted by changing the speed, the reduction ratio is calculated, or when the drum rotation speed is adjusted by combining these, the discharge flow rate, the tilt angle, and the reduction ratio are calculated. Instead of calculating from the drum rotation torque or the discharge pressure of the pump 2 each time, the discharge flow rate, the tilt angle, or the reduction ratio is uniquely determined using the drum rotation torque and the discharge pressure of the pump 2 as parameters. Thus, if the map is prepared in advance by experiments or the like, and the calculations in step F12 and step F15 are performed using the map, the controller 3 That the arithmetic unit is capable of reducing the burden of the calculation processing, it is possible to manufacture an inexpensive refuse collection vehicles J utilized becomes possible for inexpensive computing device.

  In order to adjust the rotation speed of the drum D, a rotation speed sensor that directly detects the rotation speed of the drum D itself is provided, and the drum rotation speed detected by the rotation speed sensor is used as feedback for each reduction ratio. The change, the discharge flow rate of the pump 2, the tilt angle of the hydraulic motor 1, etc. may be controlled.

  And about the dust throwing speed of the cutting device S, in the place mentioned above, based on the discharge flow rate of the pump 2 detected by the capacity | capacitance sensor 5, the control part 3 throws in the dust of the cutting device S in step F13. Although the speed is controlled, the dust throwing speed may be synchronized with the speed at which the dust of the drum D is fed into the contents, so a drum rotational speed sensor for detecting the rotational speed of the drum D is provided and the drum rotational speed. Or the drum rotation speed depends on the discharge flow rate of the pump 2, and the discharge flow rate of the pump 2 is adjusted based on the discharge pressure of the pump 2. The dust throwing speed may be adjusted based on the above, and as described above, the discharge pressure of the pump 2 depends on the drum rotational torque. Refuse input rate based on the rotation torque may be adjusted.

  Since the drum rotation speed depends on the discharge flow rate of the pump 2, the dust throwing speed may be adjusted based on the discharge flow rate of the pump 2. As described above, the drum rotation torque depends on the discharge pressure of the pump 2. Therefore, the dust throwing speed may be adjusted based on the discharge pressure.

  In each of the above-described embodiments, the driving engine E for the vehicle V is used as the driving source for the drum D and the cutting device S. However, a separate driving source is provided for the vehicle V, and this separate driving source is used. Even when the drum D and the cutting device S are driven using the above, the effect of the present invention is not lost.

  This is the end of the description of the embodiment of the present invention, but the scope of the present invention is of course not limited to the details shown or described.

It is the schematic of the refuse collection vehicle in 1st Embodiment. It is a figure which shows an example of the system configuration | structure of the garbage truck in 1st Embodiment. It is the figure which looked at the refuse collection vehicle in 1st Embodiment from back. It is the schematic of the cutting device of the refuse collection vehicle in 1st Embodiment. It is a flowchart which shows an example of the control procedure at the time of adjusting the discharge flow rate of the pump in the garbage truck of 1st Embodiment. It is the figure which showed the change with respect to time of the rotational speed of a drum and the drum rotational torque in the refuse collection vehicle of 1st Embodiment. It is a figure which shows the system configuration | structure of the garbage truck in the modification of 1st Embodiment. It is a flowchart which shows an example of the control procedure at the time of adjusting the discharge flow rate of the pump in the garbage truck of 2nd Embodiment. It is the figure which showed the change with respect to time of the rotational speed of a drum and the drum rotational torque in the refuse collection vehicle of 2nd Embodiment. It is the figure which showed the change with respect to time of the rotational speed of a drum and the drum rotational torque in the conventional refuse collection vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,33 Hydraulic motor 2,34 Pump 3 Control part 4 Torque sensor 5 Capacity | capacitance sensor 6 Engine rotational speed sensor 10, 11 Blade 12 Inlet 13 Outlet 14 Inner cylinder 15 Immovable blade 20 Pipe 21 Pressure sensor 30, 31 Axis 32 blade 35 axis rotation speed sensor 40 LED
41 Speaker B1 Work B2 Guide Plate C Lid D Drum DC Drum Cover E Engine J Garbage Collection Vehicle S Cutting Device V Vehicle

Claims (31)

A drum having a spiral blade, a lid having a spiral immovable guide blade that closes one end opening of the drum and guides dust in the drum, a hydraulic motor that rotationally drives the drum, And a pump for supplying hydraulic pressure to a pressure motor, wherein the discharge flow rate of the pump is adjusted based on a torque for rotating the drum in a garbage truck capable of compressing the dust by rotating the drum. Garbage truck. A drum having a spiral blade, a lid having a spiral immovable guide blade that closes one end opening of the drum and guides dust in the drum, a hydraulic motor that rotationally drives the drum, A dust collecting vehicle comprising a pump for supplying hydraulic pressure to a pressure motor and capable of compressing dust by rotating a drum, wherein the discharge flow rate of the pump is adjusted based on the discharge pressure of the pump Collection car. A drum having a spiral blade, a lid having a spiral immovable guide blade that closes one end opening of the drum and guides dust in the drum, a hydraulic motor that rotationally drives the drum, And a pump for supplying hydraulic pressure to the pressure motor, wherein the rotation speed of the drum is adjusted based on a torque for rotating the drum in a garbage collection vehicle capable of compressing the dust by rotating the drum. Garbage truck. A drum having a spiral blade, a lid having a spiral immovable guide blade that closes one end opening of the drum and guides dust in the drum, a hydraulic motor that rotationally drives the drum, A dust collecting vehicle comprising a pump for supplying hydraulic pressure to a pressure motor and capable of compressing the dust by rotation of the drum, wherein the rotation speed of the drum is adjusted based on a discharge pressure of the pump. Collection car. The refuse collection vehicle according to any one of claims 1 to 4, further comprising a cutting device that cuts the dust and throws the dust into the drum, and adjusts the dust throwing speed based on a torque for rotating the drum. . The refuse collection vehicle according to any one of claims 1 to 4, further comprising a cutting device that cuts the dust and throws the dust into the drum, and adjusts the dust throwing speed based on a discharge pressure of the pump. The refuse collection vehicle according to any one of claims 1 to 4, further comprising a cutting device that cuts the dust and throws the dust into the drum, and adjusts the dust throwing speed based on the rotational speed of the drum. The refuse collection vehicle according to any one of claims 1 to 4, further comprising a cutting device that cuts the dust and throws the dust into the drum, and adjusts the dust throwing speed based on a discharge flow rate of the pump. The refuse collection vehicle according to claim 1, 5, 6, 7 or 8, wherein the discharge flow rate of the pump is reduced when the torque for rotating the drum exceeds a predetermined value. The refuse collection vehicle according to claim 1, 5, 6, 7, 8 or 9, wherein the discharge flow rate of the pump is gradually reduced according to the torque value when the torque for rotating the drum exceeds a predetermined value. The refuse collection vehicle according to claim 1, 5, 6, 7, 8 or 9, wherein when the torque for rotating the drum exceeds a predetermined value, the discharge flow rate of the pump is decreased stepwise according to the torque value. 12. The discharge flow rate of the pump is adjusted by referring to a map created in advance using a torque for rotating the drum as a parameter, 12. The method according to claim 1, wherein Garbage truck. 9. The garbage collection vehicle according to claim 2, wherein the discharge flow rate of the pump is reduced when the discharge pressure of the pump becomes a predetermined value or more. The refuse collection vehicle according to claim 2, 5, 6, 7, 8, or 9, wherein when the discharge pressure of the pump becomes a predetermined value or more, the discharge flow rate of the pump is gradually reduced according to the discharge pressure value. The refuse collection vehicle according to claim 2, 5, 6, 7, 8 or 9, wherein when the discharge pressure of the pump becomes a predetermined value or more, the discharge flow rate of the pump is decreased stepwise according to the discharge pressure value. 12. The refuse according to claim 2, 5, 6, 7, 8, 9, 10, or 11, wherein the discharge flow rate of the pump is adjusted by referring to a map prepared in advance using the discharge pressure of the pump as a parameter. Collection car. The refuse collection vehicle according to claim 3, 5, 6, 7 or 8, wherein when the torque for rotating the drum exceeds a predetermined value, the rotation speed of the drum is reduced. The refuse collection vehicle according to claim 3, 5, 6, 7, 8 or 17, wherein when the torque for rotating the drum exceeds a predetermined value, the rotational speed of the drum is gradually reduced according to the torque value. 18. The garbage truck according to claim 3, 5, 6, 7, 8 or 17, wherein when the torque for rotating the drum exceeds a predetermined value, the rotational speed of the drum is gradually reduced according to the torque value. 20. The dust according to claim 3, 5, 6, 7, 8, 17, 18 or 19, wherein the rotational speed of the drum is adjusted by referring to a map prepared in advance using a torque for rotating the drum as a parameter. Collection car. The refuse collection vehicle according to claim 4, 5, 6, 7 or 8, wherein when the discharge pressure of the pump becomes a predetermined pressure or more, the rotational speed of the drum is reduced. The refuse collection vehicle according to claim 4, 5, 6, 7, 8 or 21, wherein when the discharge pressure of the pump becomes a predetermined value or more, the rotational speed of the drum is gradually decreased according to the discharge pressure value of the pump. The dust collection according to claim 4, 5, 6, 7, 8 or 21, wherein when the discharge pressure of the pump becomes a predetermined value or more, the rotational speed of the drum is gradually reduced according to the discharge pressure value of the pump. car. 24. The drum rotation speed is adjusted by referring to a map created in advance using a pump discharge pressure value as a parameter, according to claim 4, 5, 6, 7, 8, 21, 22, or 23. Garbage truck. The refuse collection vehicle according to any one of claims 1 to 24, wherein a driving source of the pump is a traveling engine. The cutting device includes a pair of relatively rotatable shafts provided with a plurality of blades on the outer periphery and a drive source for driving each shaft, and the blades of one shaft and the blades of the other shaft are alternately arranged, and the shaft The refuse collection vehicle according to any one of claims 5 to 25, wherein the dust throwing speed can be adjusted by adjusting the rotation speed of the garbage collection machine. 27. The garbage collection vehicle according to claim 5, wherein a driving source of the cutting device is a traveling engine. The notification means for notifying the progress of the dust collection work by one or both of sound and display, and the notification means performs an operation completion notification when the torque for rotating the drum exceeds a notification reference. The garbage truck according to any one of 27 to 27. The notification means for notifying the progress of the dust collection work by one or both of sound and display is provided, and the notification means notifies the end of the work when the discharge pressure of the pump exceeds the notification standard. 27. A garbage collection vehicle according to any one of 27. The notification means for notifying the progress of the dust collection work by one or both of sound and display is provided, and the notification means notifies the end of the work when the discharge flow rate of the pump falls below the notification standard. 27. A garbage collection vehicle according to any one of 27. The notification means for notifying the progress of the dust collection work by one or both of sound and display is provided, and the notification means notifies the end of the work when the rotation speed of the drum falls below the notification standard. 27. A garbage collection vehicle according to any one of 27.

Images