JP4516905B2 - Garbage truck - Google Patents

Description

  The present invention relates to a garbage collection vehicle capable of loading garbage such as garbage and oversized garbage.

As a conventionally known garbage collection vehicle, a dust storage box, a dust input box connected to the dust storage box, and a loading operation for loading the dust input into the dust storage box into the dust storage box And some devices. This loading device has a pushing plate, and it was inserted by repeatedly performing a cycle operation such as a reversing step, a primary compression step by lowering, a secondary compression step by normal rotation, and a pushing step by raising. We are loading garbage. The refuse collection vehicle further has a discharge plate in the dust storage box, and the discharge plate can be moved in the vehicle front-rear direction by an extension cylinder (see, for example, Patent Document 1).
In the conventional garbage collection vehicle, the dust is compressed between the pushing plate and the discharge plate during the pushing step by the pushing plate of the loading device, and the load (hydraulic pressure) in the expansion cylinder for the discharge plate is predetermined. When the value becomes high, the discharge plate is moved in the front direction of the vehicle. Thereby, the dust is loaded into the dust container box while being compressed between the pushing plate and the discharge plate, and the housing efficiency is improved.

JP 58-22001 A

In some conventional garbage collection vehicles, when the load on the expansion cylinder for the discharge plate increases to a predetermined value, the discharge plate is moved in the forward direction of the vehicle for a certain period of time. However, in this configuration, when the thrown dust is large and hard hard to be compressed, if the fixed time is set short and the movement amount of the discharge plate is small, the gap between the pushing plate and the discharge plate is narrow. It becomes difficult to store the dust in the dust container, and the loading operation by the loading device is immediately stopped. When the loading device stops, there is a problem that the device must be reversed to take out the dust once and put it back on.
On the other hand, if the predetermined time is set long in advance so that such large hard garbage can be pushed into the dust storage box, the discharge plate will move greatly, and when pushing in dust that is relatively easy to compress, push in There is a problem that the space between the plate and the discharge plate becomes too wide and compression is not sufficiently performed, so that the dust compression rate in the indentation process is lowered and the accommodation efficiency is lowered.
Then, in view of the conventional problems as described above, an object of the present invention is to provide a garbage collection vehicle capable of reliably pushing dust into the dust container and improving the efficiency of dust collection.

  The refuse collection vehicle of the present invention includes a dust container, a dust container box connected to the dust container box, a push plate, and the dust thrown into the dust container box using the push plate. A loading device that performs an operation of loading into the dust storage box, and a discharge plate that can compress the dust between the push plate, and storing the dust by intermittently moving the discharge plate in the vehicle front direction. A discharge device capable of discharging the stored dust by gradually increasing the amount and moving the discharge plate toward the rear of the vehicle, a load detection means for detecting a loading load generated by the dust loaded by the loading device, Position detecting means for detecting the operating position of the pushing plate, and the position of the pushing plate based on the operating position of the pushing plate by the position detecting means when the load detecting means detects a predetermined loading load. To the front of the vehicle In which and a discharge plate operation control means for changing the amount of movement.

  According to the refuse collection vehicle configured as described above, the load detecting means performs the operation in which the pushing plate of the loading device loads the dust into the dust storage box, and a predetermined loading load is generated by the dust. When detected, the position detecting means detects the operating position of the pushing plate at that time. Based on the operation position of the pushing plate, the discharge plate operation control means can change the amount of movement for moving the discharge plate in the vehicle front direction. In other words, the amount of movement of the discharge plate can be changed according to the degree of dust compression by the push-in plate, so even if the dust is compressed and its volume is large and it is difficult to accommodate it in the dust storage box, the amount of movement of the discharge plate By increasing the size, the dust can be stored in the dust storage box. Further, in the case of dust that is compressed until the end of the operation by the pushing plate, the compression rate of the dust can be increased by reducing the movement amount of the discharge plate.

In the refuse collection vehicle, the operation position of the pushing plate by the position detecting means when the load detecting means detects the predetermined loading load is for loading dust into the dust containing box by the pushing plate. It is preferable that the discharge plate operation control means reduce the amount of movement of the discharge plate in the vehicle front direction as it is closer to the end position of the operation.
As a result, when the dust is compressed until the end of the operation by the pushing plate and the predetermined loading load occurs, the amount of movement of the discharge plate is reduced, and the dust is sufficiently compressed and then pushed into the dust containing box. be able to. Conversely, when a predetermined loading load occurs in the initial stage of the operation of the pushing plate, the dust can be pushed into the dust containing box by increasing the moving amount of the discharge plate.

  According to the refuse collection vehicle of the present invention, in the operation in which the pushing plate loads the dust into the dust container, the movement amount for moving the discharge plate in the forward direction of the vehicle according to the position of the pushing plate when a predetermined load is applied. Can be changed. Therefore, even if the dust is compressed and its volume is large and it is difficult to accommodate it in the dust storage box, increasing the amount of movement of the discharge plate ensures that the dust is pushed into the dust storage box. Can be accommodated. In addition, in the case of dust that is compressed until the end of the operation by the push-in plate, the dust can be pushed into the dust-containing box after being sufficiently compressed by reducing the movement amount of the discharge plate. As a result, the dust can be surely pushed into the dust storage box, the compression rate of the dust can be increased, and the dust storage efficiency can be improved.

FIG. 1 is a side sectional view showing a garbage truck according to an embodiment of the present invention. This garbage collection vehicle is a press type that has a compression stroke in the dust loading operation, and is configured to push out the dust.
In FIG. 1, the garbage collection vehicle 1 includes a dust storage box 2 and a dust input box 3 connected to the rear part thereof. A throw-in port 3a into which dust is thrown is provided behind the dust throw-in box 3, and a lid 3b that is slid up and down with respect to the throw-in port 3a is provided. In addition, an opening 3 d for loading the dust into the dust storage box 2 is provided at the lower front portion of the dust throwing box 3. The dust input box 3 can be rotated around a fulcrum P provided at the upper portion thereof, thereby enabling an opening / closing operation with respect to the dust storage box 2. The dust container 3 closes the dust container 2 at the position indicated by the solid line in the figure, opens the dust container box 2 at the position rotated upward indicated by the two-dot chain line in the figure, and discharges the dust backward. It will be in a state that can be.

  A press-type loading device 50 is provided in the dust box 3. The loading device 50 will be described. The loading device 50 is provided with guide rails 4 that extend straight from the front upper part to the rear lower part on the left and right side walls 3 c of the dust container 3, and the slider 5 that can move along the guide rails 4. Is provided. A pair of rollers 6 are attached to the left and right sides of the slider 5, respectively. The rollers 6 can move up and down in the guide rail 4. The slider 5 has a pair of left and right side members 5a extending along the guide rail 4, and a plate or the like (not shown) extending in the vehicle width direction therebetween, and these are connected and integrated. It is a thing. Further, a pushing plate 8 is rotatably attached to the lower end portion of the slider 5 via a pin 7. The pushing plate 8 also has a pair of left and right side members 8a and a plate or the like (not shown) extending in the vehicle width direction between them, and these are connected and integrated.

  Lower ends of a pair of left and right push cylinders 9 are respectively attached to both side walls 3c of the dust box 3 by pins 10, and the piston tip is connected to the upper end of the side member 5a of the slider 5 by a pin 11. . Further, the lower end portions of a pair of left and right press cylinders 12 are connected to the pushing plate 8 by pins 13, and the piston tip portion is connected to the upper end portion of the side member 5 a of the slider 5 by the pins 11. Therefore, the slider 5 rises obliquely forward together with the push-in plate 8 by the extension operation of the push cylinder 9, and descends obliquely backward by the contraction operation. As a result, the slider 5 can reciprocate corresponding to the primary compression and push-in described later. Further, the pushing plate 8 is rotated clockwise around the pin 7 by the extension operation of the press cylinder 12, and is rotated counterclockwise by the contraction operation. As a result, the pushing plate 8 can reciprocate in response to reversal and secondary compression described later.

  FIG. 2A is an operation explanatory view in which the pushing plate 8, the push cylinder 9 and the press cylinder 12 which are the main parts of the loading device 50 are extracted from FIG. 1 (however, in order to make the drawing easier to see, the push cylinder 9 The position is slightly shifted). The pushing plate 8 performs the “reverse” stroke by the contraction operation of the press cylinder 12 with the position shown in (a) as the original position, and enters the state shown in (b). Next, the push plate 8 performs a “primary compression” process by the contraction operation of the push cylinder 9 and is in a state shown in FIG. Subsequently, the pushing plate 8 performs a “secondary compression” process by the extension operation of the press cylinder 12 and is in a state shown in FIG. Finally, the push-in plate 8 performs a “push-in” stroke by the push cylinder 9 extending and pushes the dust into the dust container 2 and returns to the state shown in FIG. Accordingly, the distal end portion 8a of the pushing plate 8 draws a closed shape in which the operation locus connects four points as shown in the figure. As the push cylinder 9 and the press cylinder 12 operate alternately in this way, the pushing plate 8 performs a stroke operation (inversion, primary compression, secondary compression, and pushing) for one cycle. Thereby, the loading device 50 can perform the operation of loading the dust thrown into the dust throwing box 3 into the dust containing box 2 using the pushing plate 8. The loading operation by the loading device 50 is performed according to an instruction from a controller 19 (FIG. 5) described later.

  In the vicinity of the push cylinder 9 and the press cylinder 12, proximity switches (14, 15, 16, and 17) are provided for detecting that their expansion and contraction operations have reached the extension end and the contraction end, respectively. The first proximity switch 14 detects that the operation of the push cylinder 9 has reached the extended end. The second proximity switch 15 detects that the operation has reached the contracted end by detecting the dog 12 a attached to the press cylinder 12. The third proximity switch 16 detects that the operation of the push cylinder 9 has reached the contracted end. The fourth proximity switch 17 detects that the operation of the press cylinder 12 has reached the extended end. The first proximity switch 14 and the third proximity switch 16 are fixedly attached to the dust box 3, but the second proximity switch 15 and the fourth proximity switch 17 are attached to the slider 5 side. The push cylinder 9 moves with the expansion and contraction operation. These proximity switch signals are input to the controller 19 as shown in the block diagram of FIG.

  In FIG. 1, a discharge plate 18 that is movable in the vehicle front-rear direction is provided inside the garbage storage box 2. One end 20 a of the telescopic discharge cylinder 20 is connected to the discharge plate 18, and the other end 20 b is connected to the end of the garbage storage box 2 in the vehicle front direction. The discharge plate 18 can be moved in a range from the position indicated by the solid line to the position indicated by the two-dot chain line by the expansion and contraction of the discharge cylinder 20. When the dust is empty, the discharge plate 18 is in a position indicated by a solid line, and a space S for loading dust in the rear direction of the vehicle from the discharge plate 18 is secured. The discharge plate 18 can compress the dust loaded by the loading device 50 between the push plate 8. The discharge device 51 configured to include the discharge plate 18, the discharge cylinder 20, and a part of hydraulic equipment described later expands the space S by intermittently moving the discharge plate 18 in the vehicle front direction. By gradually increasing the amount of dust stored in the dust storage box 2 and moving the discharge plate 18 in the vehicle rearward direction, the dust stored in the dust storage box 2 can be discharged backward.

FIG. 3 is a hydraulic circuit diagram including the push cylinder 9, the press cylinder 12, the discharge cylinder 20 and the swing cylinder 45. Note that the swing cylinder 45 is for opening and closing the dust container 3 by rotating the dust container 3.
This hydraulic circuit includes a tank 21, a hydraulic pump 22, pressure control valves 23, 28, 29, 30, 33, a push cylinder solenoid valve 24, a press cylinder solenoid valve 25, a discharge cylinder solenoid valve 26, and a swing cylinder solenoid. The valve 27, the switching valves 31 and 32, the filters 40 and 41, the tailgate lock cylinder 42, the pressure sensor 44, and each check valve are connected as shown in the figure. The pressure sensor 44 constantly detects the operating pressure of the discharge oil passage of the hydraulic pump 22, and provides the detection output to the controller 19 (FIG. 5) described later.

When the pushing plate 8 is stopped at the original position (FIG. 2A), both the push cylinder 9 and the press cylinder 12 are in the extended state, and the corresponding electromagnetic valves 24 and 25 are in the neutral position. When the solenoid 25s of the press cylinder solenoid valve 25 is energized, "reverse", when the solenoid 25e is energized, "secondary compression", and when the solenoid 24s of the push cylinder solenoid valve 24 is energized, "primary compression", When the solenoid 24e is excited, each operation of “push” is performed.
When the discharge plate 18 is stopped at the rearmost position of the vehicle (solid line in FIG. 1), the discharge cylinder 20 is in the most extended state, and the discharge cylinder solenoid valve 26 is in the neutral position. When the solenoid 26e of the discharge cylinder solenoid valve 26 is excited, the discharge cylinder 20 extends. When the solenoid 26s is excited, the discharge cylinder 20 contracts. When the discharge cylinder solenoid valve 26 is in the neutral position with excitation off, both ports of the discharge cylinder 20 are sealed. However, if the pressure control valve 29 and the switching valve 31 are moved to the open position, the discharge cylinder 20 can be contracted even when the discharge cylinder solenoid valve 26 is in the neutral position, and the discharge plate 18 can be moved in the forward direction of the vehicle. Become.
These solenoid valves 24, 25 and 26 are excited by the action of the controller 19 as shown in FIG.

FIG. 5 is a block diagram showing the system configuration of the garbage truck 1. In FIG. 5, a generator 37 is connected to the engine 36 of the garbage truck 1. The output voltage of the generator 37 is supplied to a battery 38 via a rectifier (not shown), and the voltage is supplied to an inverter 39 (including a gate control circuit). In addition, the battery 36 is charged by generating the generator 37 by driving the engine 36. An electric motor (AC motor) 35 for driving the hydraulic pump 22 is connected to the inverter 39. The electric motor 35 includes a rotation speed sensor 43, and its output is input to the controller 19. A signal from the pressure sensor 44 is also input to the controller 19. The controller 19 and the inverter 39 constitute a motor control device that controls the rotational speed of the electric motor 35 while using the output of the pressure sensor 44 and the output of the rotational speed sensor 43 as feedback signals. Further, the electromagnetic valves 24, 25, and 26 are operated under the control of the controller 19 to cause the loading device 50 and the discharging device 51 to perform a predetermined loading operation. Further, the electric motor 35 may be configured to rotate directly by the output from the engine 36.
The controller 19 that performs operation control includes a CPU, a memory, an interface circuit, and the like. The electric motor 35 can be driven in a state where the engine 36 is rotated or in a state where the engine 36 is stopped.

3 and 5, the pressure sensor 44 constantly detects the operating pressure of the discharge oil passage from the hydraulic pump 22 and provides the detected output to the controller 19. That is, the pressure sensor 44 and the controller 19 can detect the load on the push cylinder 9 and the press cylinder 12 of the loading device 50, that is, the loading load of dust in the loading device 50.
The electric motor 35 that operates the hydraulic pump 22 has a rotation speed sensor 43, and the output of the rotation speed sensor 43 is input to the controller 19. The rotation speed sensor 43 can detect the rotation speed based on an output pulse from the electric motor 35. The rotation speed sensor 43 and the controller 19 can detect the rotation speed of the hydraulic pump 22 from the rotation speed of the electric motor 35. Can be detected, and the expansion and contraction amounts of the push cylinder 9 and the press cylinder 12, that is, the operating position of the push plate 8 can be detected. Specifically, for example, the movement amount of the push plate 8 is obtained from the extension amount of the push cylinder 9 in the push stroke (the operation from FIG. 2C to FIG. 2A), and the operation position of the push plate 8 is determined from this movement amount. I can know.
Thus, since the pressure sensor 44 as the load detecting means is a sensor for detecting the loading load acting on the loading device 50, the loading load acting is loaded from the dust through the pushing plate 8. The operating position of the pushing plate 8 that can be detected by the apparatus 50 and a predetermined loading load is generated in the loading apparatus 50 can be detected quickly and accurately by the rotation speed sensor 43 as position detecting means.

The function of the controller 19 that controls the operation of the loading device 50 and the discharging device 51 will be described.
The controller 19 functions as a loading operation control means for operating the loading device 50, and a discharge plate operation control for setting the movement of the discharge plate 51 while changing the amount of movement of the discharge plate 18 in the vehicle front direction. It has a function as a means. Explaining this, when the pushing plate 8 pushes the dust in the pushing-in process of dust (the operation from FIG. 2 (c) to (a)) by the loading device 50, it is shown in FIGS. 6 (a) to (b). As shown, the dust is pushed into the dust container 2 side while being compressed with the discharge plate 18. Since the discharge plate 18 is in a stopped state when the pushing plate 8 is pushing, a large resistance force (reaction force) is generated in the push cylinder 9 by the pushing operation of the dust by the pushing plate 8, and the resistance force is reduced. When the thrust of the push cylinder 9 is exceeded, the operation of the push plate 8 stops. When the pushing plate 8 and the push cylinder 9 are stopped, the pressure in the hydraulic circuit of FIG. 3 increases. When the pressure sensor 44 detects a predetermined pressure (for example, 18 MPa), the controller 19 detects the electric motor 35. Is stopped to stop the operation of the pressing plate 8, and the rotation speed sensor 42 and the controller 19 detect the pressing operation position (stop position) f of the pressing plate 8 from the pressing process start position e. That is, it is detected that the push cylinder 9 is extended by the distance d, and the pressing plate 8 is moved by the distance d from the pushing stroke start position e and stopped. In FIG. 6, the pushing process end position is a point g, and the distance from the pushing process start position e to the end position g is D.

When the predetermined pressure (18 MPa) is detected by the pressure sensor 44, the discharge plate 18 is moved in the vehicle front direction by the function of the controller 19 as a discharge plate operation control means. The movement of the discharge plate 18 allows the hydraulic oil in the discharge cylinder 20 to escape to the tank 21 side by opening the switching valve 31 of FIG. 3 according to the control signal of the controller 19, and the discharge plate 18 is loaded by the loading load from the dust. Is pushed forward of the vehicle to cause the discharge cylinder 20 to contract and move the discharge plate 18.
Further, when the discharge plate 18 is moved, the amount of movement of the discharge plate 18 in the vehicle front direction is set by the function as the discharge plate operation control means. This setting is performed by changing the amount of movement of the discharge plate 18 based on the pushing operation position (distance d) of the pushing plate 8 when the pressure sensor 44 detects a predetermined loading load (18 MPa). The movement amount of the discharge plate 18 is changed by changing the time during which the discharge plate 18 can move, that is, the time during which the switching valve 31 is opened, and the controller 19 performs time control for this purpose. Part (timer part). In this time control unit, as shown in FIG. 7, the relationship between the pushing operation position of the pushing plate 8 detected by the rotation speed sensor 43 and the opening time of the switching valve 31 is preset and stored. . Thus, the amount of movement of the discharge plate 18 can be changed by changing the time during which the time control unit opens the switching valve 31 in accordance with the pushing operation position of the pushing plate 8. And the movement amount of the discharge plate 18 can be changed with a simple configuration.

  Referring to FIG. 7, the closer the pushing operation position of the pushing plate 8 by the rotation speed sensor 43 when the pressure sensor 44 detects a predetermined loading load is closer to the pushing process end position g, the more the discharge plate 18 moves in the vehicle front direction. The time control unit is set so that the amount of movement to is small. That is, the opening time of the switching valve 31 is extended when the pushing operation position of the pushing plate 8 by the rotation speed sensor 43 when the pressure sensor 44 detects a predetermined loading load is the initial stage in the pushing operation, The amount of movement of the discharge plate 18 in the forward direction of the vehicle is increased. On the other hand, when the push-in operation position of the push-in plate 8 is at the end of the push-in operation, the opening time is shortened, and the movement amount of the discharge plate 18 is set to be small. For example, when the distance d from the starting position e of the pushing plate 8 to the operating position f is 250 mm (d = 250 mm), the switching valve 31 is opened for 1.0 second, and the discharge plate 18 is moved forward in the vehicle for that time. Move. 6 and 7, the distance D from the start position e to the end position g of the pushing process, that is, the entire stroke of the pushing process is 800 mm.

According to the refuse collection vehicle configured as described above, when the pressure sensor 44 detects that the pushing plate 8 included in the loading device 50 pushes the dust and a predetermined loading load is generated by the dust. Moreover, the rotation speed sensor 43 can detect the operating position of the pushing plate 8 at that time. Based on the operating position of the pushing plate 8, the function of the controller 19 as the discharge plate operation control means can change and set the amount of movement for moving the discharge plate 18 in the vehicle front direction.
That is, in the pushing process, if the dust is compressed between the pushing plate 8 and the discharge plate 18 and its volume is large and it is difficult to house it in the dust containing box 2, the pushing operation by the pushing plate 8 is initially performed. A predetermined loading load will occur. In this case, the controller 19 can increase the amount of movement of the discharge plate 18 and store the dust in the dust storage box. On the other hand, when the dust is compressed until the end of the pushing operation by the pushing plate 8 and a predetermined loading load is generated, the movement amount of the discharge plate 18 is reduced and the dust is sufficiently compressed, and then the dust containing box 2 It can be pushed in, and the compression rate of the dust can be increased. That is, according to the garbage collection vehicle of the present invention, even if the input dust is compressed, even if the volume is large and it is difficult to accommodate the dust in the dust container 2, the dust container 2 Can be pushed in and housed. Furthermore, in the case of dust that is relatively easy to compress, the dust can be sufficiently compressed before being pushed into the dust storage box 2 to increase the dust compression rate and improve the dust storage efficiency. It becomes.
Further, in this pushing step, when the pushing plate 8 reaches the end position g without causing a predetermined loading load, the discharging plate 18 is stopped without moving and the loading device 50 is moved to the next state. A reversal process is performed.

In the present invention, in each of the above embodiments, the load detecting means has been described as the pressure sensor 44 for detecting the loading load acting on the loading device. However, the present invention is not limited to this, and the current sensor (ammeter) shown in FIG. You may comprise so that the loading load in the loading apparatus 50 may be detected by measuring the output current value of the inverter connected to the electric motor 35, or the output current value in the electric motor 35 of FIG.
Furthermore, although the position detecting means has been described as the rotation speed sensor 43 for the electric motor 35, the present invention is not limited to this, and a flow sensor (flow meter) for measuring the discharge flow rate of the hydraulic pump 22 in the hydraulic circuit shown in FIG. Can do. In this case, the operating position of the push-in plate 8 can be detected from the amount of expansion / contraction of the cylinders 9 and 12 by calculating the integrated value of the flow rate of the hydraulic oil.
Further, when the load detecting means and the position detecting means as described above are provided in the hydraulic circuit, they are attached in the vicinity of the hydraulic pump 22 in order to measure the pressure and flow rate in the hydraulic pump 22, but besides this, the push cylinder 9 In order to measure the pressure and flow rate in the press cylinder 12, they may be provided in the vicinity of the cylinders 9 and 12.

In the present invention, the load detection means for detecting the loading load generated by the dust loaded by the loading device 50 may be the discharging device 51 side instead of the loading device 50 side. That is, it is good also as a pressure sensor (not shown) detected by the pressure in the discharge cylinder 20 side.
Furthermore, although not shown, a position detection means for detecting the extension position of the discharge cylinder 20 is provided, and the opening time of the switching valve 31 is changed based on the extension position detected by the position detection means, thereby The controller 19 can be configured to change the amount of movement of the discharge plate 18. That is, the amount of movement of the discharge plate 18 is changed depending on the position of the discharge plate 18 in the vehicle front-rear direction when the load detecting means detects a predetermined loading load. In this case, the position detecting means may be based on the rotational speed sensor 43 or may be a position detecting sensor such as a plurality of limit switches provided in the vicinity of the discharge cylinder 20.

  Furthermore, although the present invention has been described with respect to the dust collecting vehicle loading device as a press type (FIG. 1), the dust collecting vehicle according to the present invention includes a rotating plate type loading device having a rotating plate and a pushing plate, although not shown. It may be. In this case, the operation of pushing the dust placed on the rotating plate rotated to a predetermined position in the dust throwing box into the dust containing box is a pushing step, and the function as the discharge plate operation control means by the controller (Similar to FIG. 1), the movement amount of the discharge plate is set based on the operating position (stop position) of the pushing plate, and the discharge plate is moved in the vehicle front direction by the movement amount.

1 is a side sectional view showing a press-type garbage truck according to an embodiment of the present invention. It is operation | movement explanatory drawing of the pushing board which is the principal part of a loading apparatus, a push cylinder, and a press cylinder. It is a hydraulic circuit diagram in a garbage truck. It is a block diagram which shows a part of system configuration | structure of a refuse collection vehicle. It is a block diagram about the system configuration of a garbage collection vehicle. It is explanatory drawing for demonstrating the function of the controller in an indentation process. It is a related figure of the operation position of a pushing board, and the time which moves a discharge board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust collection truck 2 Dust storage box 3 Dust input box 8 Pushing plate 19 Controller 43 Rotation speed sensor (position detection means)
44 Pressure sensor (load detection means)
50 Loading device 51 Discharging device

Claims (2)

A dust bin,
A dust input box connected to the dust container;
A loading device that has a pushing plate and performs an operation of loading dust put into the dust throwing box using the pushing plate into the dust containing box;
It has a discharge plate capable of compressing the dust with the pushing plate, and the discharge plate is intermittently moved in the front direction of the vehicle, thereby gradually increasing the amount of dust contained and moving the discharge plate in the rear direction of the vehicle. A discharge device capable of discharging the stored dust by moving;
Load detecting means for detecting a loading load generated by the dust loaded by the loading device;
Position detecting means for detecting the operating position of the pushing plate;
Discharge plate operation control means for changing the amount of movement of the discharge plate in the vehicle front direction based on the operation position of the push plate by the position detection means when the load detection means detects a predetermined loading load; ,
A garbage collection vehicle characterized by comprising:   The closer the operation position of the pushing plate by the position detecting means when the load detecting means detects the predetermined loading load, the closer to the end position of the operation for loading the dust into the dust container by the pushing plate. The refuse collection vehicle according to claim 1, wherein the discharge plate operation control means reduces the amount of movement of the discharge plate in the vehicle front direction.

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