Dust collection vehicle

Abstract

To provide a garbage collection vehicle that solves the problem of detection switches of conventional garbage collection vehicles, and can switch garbage loading actions according to the types of garbage.SOLUTION: The garbage collection vehicle includes: a rotational angle sensor for a rotational plate that detects an arbitrary rotational position of the rotational plate; a rotational angle sensor for a push-in plate that detects an arbitrary rotational position of the push-in plate; a controlling device that controls actions of the rotational plate and the push-in plate based on positional information detected by these sensors; and a loading mode receiving part that receives the selection of either loading mode of multiple loading modes. The controlling device has a positional information storage part that in association with the respective loading modes received by the loading mode receiving part, stores "a normal rotation ending position" of the rotational plate, "a push-in plate return starting position" of the rotational plate, "a push-in ending position" of the push-in plate, and "a return ending position" of the push-in plate. The controlling device takes the garbage loading action using the respective pieces of positional information stored in association with the selected loading mode.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a garbage collection vehicle.

Background Art

[0002] Conventionally, a garbage collection vehicle is known that includes a garbage storage box for storing garbage and a garbage input box connected in series behind the garbage storage box. The garbage input box is equipped with a garbage loading device, and the garbage introduced into the garbage input box by the garbage loading device is pushed into the garbage storage box. The garbage loading device of the garbage collection vehicle disclosed in Patent Document 1 is a so-called rotary plate type garbage loading device including a rotary plate for scraping up the garbage introduced into the garbage input box and a pushing plate for pushing the scraped-up garbage into the garbage storage box.

[0003] Since the garbage loading device performs the garbage loading operation while detecting predetermined positions of the rotary plate and the pushing plate, the garbage input box is provided with detection means for detecting the predetermined positions of the rotary plate and the pushing plate.

[0004] In the garbage collection vehicle of Patent Document 1, a plurality of detection switches (referred to as "switches" in the same document) for respectively detecting the positions of the rotary plate and the pushing plate are provided in the garbage input box. The detection switch for the rotary plate detects a detected member attached to the end of the shaft supporting the rotary plate. The detection switch for the rotary plate detects that the rotary plate is in the "forward rotation end position" (referred to as the "set stop position" in the same document) and that the rotary plate is in the "pushing plate return start position". The detection switch for the pushing plate detects a detected member attached to the end of the shaft supporting the pushing plate. Two detection switches for the pushing plate are provided. One detection switch detects that the pushing plate is in the "pushing end position" (referred to as the "forward limit position" in the same document), and the other detection switch detects that the pushing plate is in the "return end position" (referred to as the "backward limit position" in the same document). As the detection switch, a limit switch, a photoelectric switch, a proximity switch, etc. are used.

Prior Art Documents

Patent Documents

[0005] Patent Document 1 Japanese Unexamined Patent Application Publication No. 2021-1045 Summary of the Invention Problems to be Solved by the Invention

[0006] By the way, if the dust loading operation by the rotating plate and the pushing plate can be switched according to the type of dust, it is possible to improve the working efficiency and the loading efficiency in the dust collection vehicle. Specifically, if the "normal rotation end position" of the rotating plate, the "pushing plate return start position" of the rotating plate, the "pushing end position" of the pushing plate, etc. can be switched according to the type of dust, it is possible to improve the working efficiency and the loading efficiency in the dust collection vehicle.

[0007] However, in order to switch the above-mentioned positions of the rotating plate and the pushing plate, since the detection positions of the rotating plate and the pushing plate increase, it is necessary to add detection switches and detected members.

[0008] Also, when detecting a predetermined position of the rotating plate or the pushing plate using a detection switch, when it becomes necessary to change the detection position for some reason, work to change the mounting position of the detection switch becomes necessary.

[0009] Also, when the positions to be detected of the rotating plate and the pushing plate are close to each other, it may be difficult to secure a mounting space for the detection switch and to detect all of the positions to be detected.

[0010] An object of the present invention is to solve the problems of the above detection switch by adopting an alternative means other than the detection switch, and to provide a dust collection vehicle capable of switching the dust loading operation according to the type of dust. Means for Solving the Problems

[0011] To solve the above problems, the garbage collection vehicle according to the first aspect of the present invention includes a rotating plate that scrapes up the garbage put into the garbage input box, a pushing plate that pushes the garbage scraped up by the rotating plate into the garbage storage box, a rotation angle sensor that detects an arbitrary rotation position of the rotating plate and / or an arbitrary rotation position of the pushing plate, and based on the rotation position of the rotating plate and / or the rotation position of the pushing plate detected by the rotation angle sensor, a control device that controls the operation of the rotating plate and / or the pushing plate, and a loading mode receiving unit that receives the selection of any one of a plurality of loading modes. It is premised on having. The control device has a position information storage unit that stores at least one piece of position information among the "forward rotation end position" of the rotating plate, the "start position for returning the pushing plate" of the rotating plate, the "pushing end position" of the pushing plate, and the "return end position" of the pushing plate, in association with each loading mode received by the loading mode receiving unit. The control device rotates the rotating plate forward from the initial position where the rotating plate is at the "forward rotation end position" and the pushing plate is at the "pushing end position", and when the rotating plate passes through the "start position for returning the pushing plate", starts the backward rotation of the pushing plate, and then rotates the rotating plate forward to the "forward rotation end position" and rotates the pushing plate to the "return end position" as a garbage scraping process, and after the garbage scraping process, rotates the pushing plate forward from the "return end position" to the "pushing end position" as a garbage pushing process, and executes this as one cycle of the garbage loading operation. The control device applies the position information stored in the position information storage unit in association with the selected loading mode to cause the garbage loading operation.

[0012] According to the garbage collection vehicle having such a configuration, it is possible to provide a garbage collection vehicle that can solve the problems of the detection switch used in the conventional garbage collection vehicle and can switch the garbage loading operation according to the type of garbage.

[0013] The dust collection vehicle according to the second aspect of the present invention is the dust collection vehicle according to the first aspect, wherein the position information storage unit stores, in association with any one of the loading modes, the "forward rotation end position" of the rotating plate and the "pushing end position" of the pushing plate as the "first forward rotation end position" and the "first pushing end position", respectively, and stores, in association with any other loading mode, the "forward rotation end position" of the rotating plate and the "pushing end position" of the pushing plate as the "second forward rotation end position" and the "second pushing end position", respectively. However, the "second forward rotation end position" is a rotation position that has advanced a predetermined angle in the forward rotation direction from the "first forward rotation end position", and the "second pushing end position" is a rotation position that has advanced a predetermined angle forward from the "first pushing end position".

[0014] The dust collection vehicle according to the third aspect of the present invention is the dust collection vehicle according to the first aspect, wherein the position information storage unit stores the "first pushing plate return start position" as the "pushing plate return start position" of the rotating plate stored in association with any one of the loading modes, and stores the "second pushing plate return start position" as the "pushing plate return start position" of the rotating plate stored in association with any other loading mode. However, the "second pushing plate return start position" is a rotation position that has advanced a predetermined angle in the forward rotation direction from the "first pushing plate return start position", and is a rotation position that closes an opening formed between the rotation shaft that supports the rotating plate and the bottom wall of the dust input box formed along the orbit of the tip of the rotating plate.

[0015] The dust collection vehicle according to the fourth aspect of the present invention is the dust collection vehicle according to any one of the first to third aspects, and includes a rotation angle sensor for the rotating plate that detects an arbitrary rotation position of the rotating plate by detecting an arbitrary rotation position of a rotation shaft that rotates integrally with the rotating plate, and a rotation angle sensor for the pushing plate that detects an arbitrary rotation position of a rotation shaft that rotates integrally with the pushing plate.

[0016] The garbage collection vehicle according to the fifth aspect of the present invention is the garbage collection vehicle according to any one of the first to fourth aspects, and further includes position information correction means for correcting at least one of the "forward rotation end position" of the rotary plate, the "start position of pushing the pushing plate back" of the rotary plate, the "pushing end position" of the pushing plate, and the "return end position" of the pushing plate, which are stored in association with each loading mode.

Effect of the Invention

[0017] According to the present invention, it is possible to provide a garbage collection vehicle that can switch the garbage loading operation according to the type of garbage while solving the problems of the detection switch used in the conventional garbage collection vehicle.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8A

Figure 8B

Figure 8C

Figure 8D

Figure 9

Embodiments for Carrying out the Invention

[0019] Hereinafter, a dust collection vehicle according to an embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the "front", "rear", "left", and "right" of the dust collection vehicle may be simply referred to as "front", "rear", "left", and "right", respectively.

[0020] As shown in FIGS. 1 and 2, a dust collection vehicle 1 according to an embodiment of the present invention includes a dust storage box 3 and a dust input box 4 on a vehicle body 2. A dust input box 4 is continuously provided behind the dust storage box 3, and openings communicating with each other are provided on the rear surface of the dust storage box 3 and the front surface of the dust input box 4, respectively. The dust input box 4 is pivotally supported with respect to the dust storage box 3 via a pivot 6 extending in the left - right direction, and tilts when driven by a pair of left - right tilting cylinders (not shown).

[0021] A dust input port 7 for inputting dust is opened on the rear surface of the dust input box 4 (see FIG. 2), and the dust input port 7 is opened and closed by a tailgate 8 that can be raised and lowered. A rear operation part 11 for operations such as the operation of the dust collection device 13 is provided on the left side of the dust input port 7 (see FIGS. 1 and 3). The rear operation part 11 is provided with various operation buttons such as a loading button B1 and an emergency stop button B2, and further provided with various operation switches such as a loading mode changeover switch 26 and a spill prevention mode ON / OFF switch 28. The loading mode changeover switch 26 and the spill prevention mode ON / OFF switch 28 will be described again later.

[0022] As shown in FIG. 2, inside the dust bin 4, a bottom wall 12 is provided where the dust thrown in from the dust inlet 7 temporarily accumulates. The bottom wall 12 is formed in a substantially semi-circular arc shape in cross-section along the orbit of the tip of the rotating plate 14.

[0023] The dust loading device 13 scrapes up the dust accumulated on the bottom wall 12 by the rotation of the rotating plate 14, and pushes the scraped-up dust into the dust storage box 3 by the pushing plate 15. A rotating shaft 17 extending in the left-right direction is installed below the dust bin 4, and the proximal end side of the rotating plate 14 is fixed to this rotating shaft 17. The rotating shaft 17 is rotationally driven by a hydraulic motor 22 (not shown in FIG. 2, refer to FIG. 4) installed in the dust bin 4.

[0024] The dust bin 4 is provided with a rotary angle sensor 23 for the rotating plate to detect an arbitrary rotation position of the rotating plate 14. The rotary angle sensor 23 for the rotating plate detects an arbitrary rotation position of the rotating plate 14 by detecting an arbitrary rotation position of the rotating shaft 17 that rotates integrally with the rotating plate 14. As the rotary angle sensor 23 for the rotating plate, for example, a rotary angle sensor capable of detecting the rotation position of the end of the rotating shaft 17 over 360° can be used. Furthermore, as this rotary angle sensor, a rotary encoder or a potentiometer can be used. Also, a non-contact rotary angle sensor can be used as the above rotary angle sensor.

[0025] The pushing plate 15 is provided at a position higher than the rotating shaft 17 in the dust bin 4 and is fixed to a rotating shaft 18 extending in the left-right direction. The pushing plate 15 is provided with an arm portion 19 extending upward from the rotating shaft 18, and one end side of a pushing cylinder 21 is rotatably connected to the arm portion 19. The other end side of the pushing cylinder 21 is rotatably connected to the side wall 4a of the dust bin 4. Thereby, the pushing plate 15 rotates in the front-rear direction with the expansion and contraction operation of the pushing cylinder 21.

[0026] In addition, the dustbin 4 is provided with a rotary angle sensor 24 for the push-in plate to detect the rotation position of the push-in plate 15. The rotary angle sensor 24 for the push-in plate detects an arbitrary rotation position of the push-in plate 15 by detecting an arbitrary rotation position of the rotation shaft 18 that rotates integrally with the push-in plate 15. As the rotary angle sensor 24 for the push-in plate, for example, a rotary angle sensor capable of detecting the rotation position of the end of the rotation shaft 18 over 360° can be used. Furthermore, as this rotary angle sensor, a rotary encoder or a potentiometer can be used. Also, a non-contact rotary angle sensor can be used as the above rotary angle sensor.

[0027] <Control system of the dust loading device> Next, with reference to FIGS. 4 and 5, a control system for operating the dust loading device 13 will be described. This control system includes a hydraulic circuit that controls the hydraulic pressure supplied to the hydraulic motor 22, the push-in cylinder 21, etc. of the dust loading device 13, and a control device PLC (programmable logic controller) that outputs a control signal to a control valve unit 31 provided in this hydraulic circuit.

[0028] First, the hydraulic circuit will be described with reference to FIG. 4. This hydraulic circuit includes a hydraulic pump P, an oil reservoir T, and a control valve unit 31. A driving force is transmitted to the hydraulic pump P by a PTO (power take-off) that extracts the power of the traveling engine E of the dust collection vehicle 1.

[0029] The control valve unit 31 includes a plurality of electromagnetic control valves. The control valve unit 31 supplies the hydraulic oil from the hydraulic pump P to the rod-side oil chambers of the pair of left and right push-in cylinders 21 according to a predetermined control signal from the control device PLC. On the other hand, the control valve unit 31 supplies the hydraulic oil from the hydraulic pump P to the head-side oil chambers of the pair of left and right push-in cylinders 21 according to another predetermined control signal from the control device PLC.

[0030] When the hydraulic oil is supplied to the head-side oil chamber, the pair of left and right pushing cylinders 21 extend to rotate the pushing plate 15 forward. On the other hand, when the hydraulic oil is supplied to the rod-side oil chamber, the pair of left and right pushing cylinders 21 contract to rotate the pushing plate 15 backward.

[0031] The control valve unit 31 can supply the hydraulic oil from the hydraulic pump P to the forward rotation side oil chamber of the hydraulic motor 22 according to a predetermined control signal from the control device PLC, and rotate the hydraulic motor 22 forward. On the other hand, the control valve unit 31 can supply the hydraulic oil from the hydraulic pump P to the reverse rotation side oil chamber of the hydraulic motor 22 according to another predetermined control signal from the control device PLC, and operate the hydraulic motor 22 in reverse.

[0032] Next, the input and output of the signals of the control device PLC will be described with reference to FIG. 5. First, the power supply to the control device PLC is performed by the battery BT. An ignition switch SWK, a PTO switch SWP, a relay coil R1, etc. of the dust collecting vehicle 1 are provided on the energization line K2 that extends from the positive electrode of this battery BT to the right side of FIG. 5 and reaches the ground line K1.

[0033] Also, the upstream end of the energization line K3 is connected between the ignition switch SWK and the battery BT in the energization line K2, and a contact point (relay switch) r1 of the relay coil R1 is provided in the middle thereof. A main power lamp PL is provided on the downstream side of the contact point r1 of this energization line K3. When the relay coil R1 is excited and the contact point r1 is closed, the energization line K3 is energized, and the main power lamp PL lights up.

[0034] Also, the upstream end of the energization line K4 is connected between the contact point r1 and the main power lamp PL in the energization line K3. As a result, power is supplied to the signal power supply unit (not shown) of the control device PLC. That is, when the contact point r1 is closed, power is supplied to the control device PLC via the energization lines K3 and K4.

[0035] Furthermore, a power supply line K5 branched from the power supply line K4 is configured to supply power to the control device PLC during the operation of the dust collection device 13. That is, the power supply line K5 is a line for inputting a so-called continuous loading signal, and here, an emergency stop button B2 provided at the rear operation part 11 on the left side of the dust input box 4, an emergency stop button (not shown) provided at the rear right part of the dust input box 4, and switches SW1 to SW3 that open and close in response to the operation of an emergency stop plate (not shown) are respectively interposed. When the power supply (that is, the input of the continuous loading signal) is interrupted by these switches SW1 to SW3, the control device PLC stops supplying power to the electromagnetic control valve of the control valve unit 31, and the control valve unit 31 stops supplying hydraulic oil from the hydraulic pump P to the hydraulic motor 22 and the pushing cylinder 21.

[0036] Also, a plurality of branch lines branched from the middle of the power supply line K4 are connected to the power supply line K4, and the above-described rotary plate rotation angle sensor 23 and the pushing plate rotation angle sensor 24 are respectively interposed in each of these branch lines. Signals from the rotary plate rotation angle sensor 23 and the pushing plate rotation angle sensor 24 are input to the control device PLC, and based on these signals, any rotation position of the rotary plate 14 and any rotation position of the pushing plate 15 of the dust collection device 13 are detected.

[0037] Furthermore, in addition to the rotary plate rotation angle sensor 23 and the pushing plate rotation angle sensor 24, on the input side to the control device PLC, there are also provided a loading switch SW5 (a switch interlocked with the loading button B1) for causing the dust collection device 13 to perform a dust collection operation, a loading / discharge changeover switch SW6 for mutually switching between the dust collection operation and the dust discharge operation, a switch SW7 for tilting and opening the dust input box 4, a switch (not shown) for selecting a single-action or continuous-action of the dust collection operation, a switch (not shown) for operating the rotary plate 14 or the pushing plate 15 independently, etc., which are electrically connected. The loading / discharge changeover switch SW6 is provided at the branch position where the power supply line K5 branches from the power supply line K4, and the power supply line K5 is connected to the loading side of the loading / discharge changeover switch SW6.

[0038] As described above, while various switches are connected to the input side, on the output side of the control device PLC, solenoids of a plurality of electromagnetic control valves included in the control valve unit 31 described above are connected. Then, the control device PLC is programmed to output to the corresponding solenoid so as to operate the hydraulic motor 22, the push cylinder 21, etc. according to a preset procedure based on signals input from the rotary plate rotation angle sensor 23, the push plate rotation angle sensor 24, the switches SW1 to SW7, etc.

[0039] For example, when the waste loading device 13 performs a waste loading operation, both the ignition switch SWK and the PTO switch SWP on the energization line K2 are turned on, and the relay coil R1 is excited. As a result, the contact r1 of the relay coil R1 closes, and power is supplied to the control device PLC through the energization lines K3 and K4. As a result, the control device PLC becomes operable and appropriately outputs various control signals to the control valve unit 31.

[0040] Receiving this control signal, the control valve unit 31 supplies hydraulic pressure to the hydraulic motor 22, the push cylinder 21, etc. As a result, the hydraulic motor 22, the push cylinder 21, etc. operate according to a predetermined procedure, and the waste loading operation is performed by the rotary plate 14 and the push plate 15 performing coordinated operations with each other.

[0041] <Control of Waste Loading Operation> The dust collection vehicle 1 according to this embodiment can switch the dust loading operation (loading mode) according to the type of dust. Specifically, the loading mode can be switched by operating the above-described loading mode switching switch 26 and the spill prevention mode ON / OFF switch 28 that function as a loading mode reception unit for receiving the selection of the loading mode. The control device PLC has a position information storage unit 27 in order to realize the switching of the above-described loading mode. The position information storage unit 27 stores the "forward rotation end position" of the rotary plate 14, the "pushing end position" of the pushing plate 15, and the "return end position" of the pushing plate 15 in association with the first loading mode received via the loading mode switching switch 26. Further, the position information storage unit 27 stores the "start position of pushing plate return" of the rotary plate 14 in association with the second loading mode received via the spill prevention mode ON / OFF switch 28.

[0042] For example, as shown in the position information storage table 41 of FIG. 6(a), "A mode" and "B mode" are set as the first loading modes received via the loading mode switching switch 26, and G degrees is stored as the "forward rotation end position" associated with the "A mode", L degrees is stored as the "pushing end position" associated with the "A mode", and N degrees is stored as the "return end position" associated with the "A mode". Further, H degrees is stored as the "forward rotation end position" associated with the "B mode", M degrees is stored as the "pushing end position" associated with the "B mode", and P degrees is stored as the "return end position" associated with the "B mode". Note that G degrees, L degrees, N degrees, H degrees, M degrees, and P degrees are specific rotation angles or rotation angles from a predetermined reference position (0 degrees) of the rotary plate 14 or the pushing plate 15. In this embodiment, H degrees is an angle advanced by a predetermined angle (for example, any angle in the range of 0 degrees to 15 degrees with respect to the reference position) that is an acute angle in the forward rotation direction compared to G degrees, M degrees is an angle advanced by a predetermined angle (for example, any angle in the range of 0 degrees to 15 degrees with respect to the reference position) that is an acute angle forward compared to L degrees, and N degrees and P degrees are the same angle. However, the values that can be set as G degrees, L degrees, N degrees, H degrees, M degrees, and P degrees are not limited to the above, and any values can be set.

[0043] Also, for example, as shown in the position information storage table 42 of FIG. 6(b), as the second loading mode received via the spill prevention mode ON / OFF switch 28, an "ON mode" and an "OFF mode" are set, and J degrees is stored as the "pushing plate return start position" of the rotating plate 14 in association with the "ON mode". Further, K degrees is stored as the "pushing plate return start position" of the rotating plate 14 in association with the "OFF mode". Note that J degrees and K degrees are specific rotation angles from a predetermined reference position of the rotating plate 14. In the present embodiment, K degrees is an angle advanced by a predetermined angle (for example, any angle in the range of 50 degrees to 70 degrees with respect to the reference position) that is an acute angle in the forward rotation direction compared to G degrees, and J degrees is an angle advanced by a predetermined angle (for example, any angle in the range of 120 degrees to 140 degrees with respect to the reference position) that is an acute angle in the forward rotation direction compared to K degrees. However, the values that can be set as K degrees and J degrees are not limited to the above, and any value can be set.

[0044] Hereinafter, with reference to the flowchart of FIG. 7, the processing operations executed in the dust loading device 13 will be described.

[0045] First, in step S1, when an operator performs an operation to switch the PTO switch SWP from off to on, the power supply of the control device PLC is turned on.

[0046] Next, in step S2, the control device PLC determines whether the loading / discharging changeover switch SW6 is switched to the loading side. If the loading / discharging changeover switch SW6 is switched to the loading side (S2: YES), the process proceeds to step S3.

[0047] In step S3, the control device PLC determines whether the loading mode changeover switch 26 is switched to the A mode side. If the loading mode changeover switch 26 is switched to the A mode side (S3: YES), the process proceeds to step S4, and the control device PLC sets the first loading mode to the A mode. On the other hand, if the loading mode changeover switch 26 is not switched to the A mode side (S3: NO), the process proceeds to step S5, and the control device PLC sets the first loading mode to the B mode.

[0048] After step S4 or step S5, in step S6, the control device PLC determines whether the spillage mode ON / OFF switch 28 is switched to the ON side. Then, if the spillage mode ON / OFF switch 28 is switched to the ON side (S6: YES), the process proceeds to step S7, and the second loading mode is set to the ON mode. When the control device PLC determines that the spillage mode ON / OFF switch 28 is switched to the OFF side (S6: NO), the process proceeds to step S8, and the second loading mode is set to the OFF mode.

[0049] After step S7 or step S8, in step S9, the control device PLC determines whether the loading switch SW5 is turned on when the loading button B1 is pressed. If the loading switch SW5 is turned on (S9: YES), the process proceeds to step S10.

[0050] After step S9, when the first loading mode is mode A (S10: YES) and the second loading mode (anti-spill mode) is in the OFF mode (S11: NO), in the position information storage table 41 (Fig. 6(a)) stored in the position information storage unit 27, the G degrees stored in association with mode A are applied as the "forward rotation end position" of the rotating plate, and the L degrees and N degrees also stored in association with mode A are respectively applied as the "pushing end position" and "return end position" of the pushing plate. Also, the control device PLC applies, in the position information storage table 42 (Fig. 6(b)), the K degrees stored in association with the OFF mode of the second loading mode as the "pushing plate return start position" of the rotating plate. After applying the above respective positions, the control device PLC executes the dust loading operation by the rotating plate 14 and the pushing plate 15 (step S13).

[0051] Also, after step S9, when the first loading mode is not mode A (S10: NO) and the second loading mode (anti-spill mode) is in the ON mode (S11: YES), in the position information storage table 41 (Fig. 6(a)) stored in the position information storage unit 27, the G degrees stored in association with mode A are applied as the "forward rotation end position" of the rotating plate, and the L degrees and N degrees also stored in association with mode A are respectively applied as the "pushing end position" and "return end position" of the pushing plate. Also, the control device PLC applies, in the position information storage table 42 (Fig. 6(b)), the J degrees stored in association with the ON mode of the second loading mode as the "pushing plate return start position" of the rotating plate. After applying the above respective positions, the control device PLC executes the dust loading operation by the rotating plate 14 and the pushing plate 15 (step S14).

[0052] Also, after step S9, when the first loading mode is mode B (S10: NO) and the second loading mode (anti-spill mode) is the OFF mode (S12: YES), in the position information storage table 41 (Fig. 6(a)) stored in the position information storage unit 27, the H degrees stored in association with mode B are applied as the "forward rotation end position" of the rotating plate, and the M degrees and P degrees also stored in association with mode B are applied as the "pushing end position" and "return end position" of the pushing plate, respectively. Further, the control device PLC applies, in the position information storage table 42 (Fig. 6(b)), the K degrees stored in association with the OFF mode of the second loading mode as the "pushing plate return start position" of the rotating plate. After applying the above respective positions, the control device PLC executes the dust loading operation by the rotating plate 14 and the pushing plate 15 (step S15).

[0053] Also, after step S9, when the first loading mode is mode B (S10: NO) and the second loading mode (anti-spill mode) is the ON mode (S12: NO), in the position information storage table 41 (Fig. 6(a)) stored in the position information storage unit 27, the H degrees stored in association with mode B are applied as the "forward rotation end position" of the rotating plate, and the M degrees and P degrees also stored in association with mode B are applied as the "pushing end position" and "return end position" of the pushing plate, respectively. Further, the control device PLC applies, in the position information storage table (Fig. 6(b)), the J degrees stored in association with the ON mode of the second loading mode as the "pushing plate return start position" of the rotating plate. After applying the above respective positions, the control device PLC executes the dust loading operation by the rotating plate 14 and the pushing plate 15 (step S16).

[0054] After any of steps S13 to S16, the control device PLC determines whether the dust loading operation by the rotating plate 14 and the pushing plate 15 has been completed for one cycle. If the dust loading operation has been completed for one cycle (step S17: YES), the series of operations is terminated. On the other hand, if the dust loading operation has not been completed for one cycle (step S17: NO), the process returns to step S10.

[0055] Next, the dust loading operation in each of the above-described steps S13 to S16 will be described with reference to FIGS. 8A to 8D.

[0056] - In the case of -A mode·anti-spill OFF mode (standard loading mode)- First, when the first loading mode is the A mode and the second loading mode (anti-spill mode) is the OFF mode (hereinafter, the loading mode in this case is also referred to as the "standard loading mode"), the dust loading operation will be described.

[0057] First, as the initial position of the cycle of the dust loading operation, as shown by the solid line in FIG. 8A, the rotating plate 14 is in the "forward rotation end position" facing substantially horizontally forward, and the pushing plate 15 is in the "pushing end position" arranged so as to avoid interference with the rotating plate 14, as shown by the solid line in FIG. 8A. At this time, the control device PLC determines that the rotating plate 14 and the pushing plate 15 are in the initial positions in the present loading mode based on the signals input from the rotating plate rotation angle sensor 23 and the pushing plate rotation angle sensor 24 and the information associated with the A mode in the position information storage table 41.

[0058] If the loading switch SW5 is on (in the state of YES in step S9) at the above initial position, the control device PLC rotates the hydraulic motor 22 forward through the control valve unit 31 and rotates the rotating plate 14 forward.

[0059] After the rotating plate 14 rotates forward from the G degree which is the above forward rotation end position, when the control device PLC determines that the rotation position of the rotating plate 14 has reached the K degree which is the "pushing plate return start position" associated with the OFF mode in the position information storage table 42 (refer to the position of the rotating plate 14 shown by the solid line in FIG. 8B), the pushing cylinder 21 is contracted and the pushing plate 15 is rotated backward toward the dust inlet 7 side. At this time, the rotating plate 14 continues to rotate forward to scrape up the dust accumulated on the bottom wall 12.

[0060] When the control device PLC determines that the rotation position of the push-in plate 15 has reached N degrees, which is the "return end position" associated with the A mode in the position information storage table 41 (refer to the position of the push-in plate 15 shown in Fig. 8C), it stops the contraction of the push-in cylinder 21 and stops the rotation of the push-in plate 15.

[0061] After the control device PLC stops the contraction of the push-in cylinder 21, it rotates the rotating plate 14 forward until the rotation position of the rotating plate 14 reaches G degrees, which is the "forward rotation end position" associated with the A mode in the position information storage table 41. Then, when it determines that the rotation position of the rotating plate 14 has reached G degrees (refer to the position of the rotating plate 14 shown by the solid line in Fig. 8D), it stops the hydraulic motor 22 and stops the forward rotation of the rotating plate 14.

[0062] After the control device PLC stops the forward rotation of the rotating plate 14, it extends the push-in cylinder 21 and rotates the push-in plate 15 toward the front dust collection box 3 side. When the control device PLC determines that the rotation position of the push-in plate 15 has reached L degrees, which is the "push-in end position" associated with the A mode in the position information storage table 41 (refer to the position of the push-in plate 15 shown by the solid line in Fig. 8A), it stops the extension of the push-in cylinder 21 and stops the rotation of the push-in plate 15. Thus, one cycle of the dust loading operation of the rotating plate 14 and the push-in plate 15 is completed.

[0063] The "standard loading mode" described above, with the first loading mode being the A mode and the second loading mode (anti-spill mode) being the OFF mode, is a loading mode suitable for loading general combustible waste, for example.

[0064] -In the case of the A mode · anti-spill ON mode- Next, the dust loading operation executed when the first loading mode is the A mode and the second loading mode (anti-spill mode) is the ON mode will be described. However, only the differences from the dust loading operation in the "standard loading mode" will be described, and the description of the same operations will be omitted.

[0065] In the case of the "standard loading mode", after the rotating plate 14 rotates forward from the initial position ("forward rotation end position"), when the rotation position of the rotating plate 14 reaches K degrees which is the "pushing plate return start position" associated with the OFF mode in the position information storage table 42 (refer to the position of the rotating plate 14 shown by the solid line in FIG. 8B), the pushing plate 15 starts to rotate backward toward the rear dust inlet 7 side. On the other hand, when the first loading mode is the A mode and the second loading mode is the ON mode, after the rotating plate 14 rotates forward from the initial position, when the rotation position of the rotating plate 14 reaches J degrees which is the "pushing plate return start position" associated with the ON mode in the position information storage table 42 (refer to the position of the rotating plate 14 shown by the two-dot chain line in FIG. 8B), the pushing plate 15 starts to rotate backward toward the rear dust inlet 7 side. However, as shown by the two-dot chain line in FIG. 8B, the above-mentioned J degrees is the rotation position where the rotating plate 14 closes the opening 7a formed between the rotating shaft 17 in the dust inlet 7 and the bottom wall 12.

[0066] In the case of the "standard loading mode", for example, as shown in FIG. 9, before the rotating plate 14 closes the opening 7a formed between the rotating shaft 17 and the bottom wall 12, since the pushing plate 15 starts to rotate backward, when the load is an easily rollable load 43 such as a can or a PET bottle, the load 43 may flow backward from the dust collection box 3 side and spill out of the dust inlet box 4 from the dust inlet 7. However, in the dust collection vehicle 1 according to the present embodiment, if the second loading mode (load spill prevention mode) is set to the ON mode and the dust loading operation is performed, after the rotating plate 14 closes the opening 7a formed between the rotating shaft 17 and the bottom wall 12, since the pushing plate 15 starts to rotate backward, even if the load is an easily rollable load 43 such as a can or a PET bottle, it is possible to prevent the load 43 from spilling out of the dust inlet box 4 from the dust inlet 7.

[0067] - In the case of the -B mode · load spill prevention OFF mode - Next, the dust loading operation performed when the first loading mode is the B mode and the second loading mode (load spill prevention mode) is the OFF mode will be described.

[0068] First, as the initial position of the cycle of the dust loading operation, the rotary plate 14, as shown by the two-dot chain line in Fig. 8A, has a rotation position advanced by a predetermined angle in the forward rotation direction compared to the "forward rotation end position" of the rotary plate 14 in the standard loading mode shown by the solid line in the same figure, and this rotation position becomes the "forward rotation end position". The pushing plate 15, as shown by the two-dot chain line in Fig. 8A, has a rotation position advanced by a predetermined angle forward compared to the "pushing end position" of the pushing plate 15 in the standard loading mode shown by the solid line in the same figure, and this rotation position becomes the "pushing end position". At this time, the control device PLC determines that the rotary plate 14 and the pushing plate 15 are at the initial positions in this loading mode based on the signals input from the rotary angle sensor 23 for the rotary plate and the rotary angle sensor 24 for the pushing plate, and the information associated with the B mode in the position information storage table 41.

[0069] If the loading switch SW5 is on (in the state of YES in step S9) at the above initial position, the control device PLC rotates the hydraulic motor 22 forward via the control valve unit 31 and rotates the rotary plate 14 forward.

[0070] After the rotary plate 14 rotates forward from H degrees, which is the above forward rotation end position, when the control device PLC determines that the rotation position of the rotary plate 14 has reached K degrees, which is the "starting position for returning the pushing plate" associated with the OFF mode in the position information storage table 42 (refer to the position of the rotary plate 14 shown by the solid line in Fig. 8B), the pushing cylinder 21 is contracted to rotate the pushing plate 15 backward as shown by the two-dot chain line in Fig. 8B. At this time, the rotary plate 14 continues to rotate forward to scrape up the dust accumulated on the bottom wall 12.

[0071] When the control device PLC determines that the rotation position of the pushing plate 15 has reached P degrees, which is the "return end position" associated with the B mode in the position information storage table 41 (refer to the position of the pushing plate 15 shown in Fig. 8C), the contraction of the pushing cylinder 21 is stopped and the rotation of the pushing plate 15 is stopped.

[0072] After the control device PLC stops the contraction of the pushing cylinder 21, it rotates the rotating plate 14 forward until the rotational position of the rotating plate 14 reaches H degrees, which is the "forward rotation end position" associated with the B mode in the position information storage table 41. Then, when it determines that the rotational position of the rotating plate 14 has reached H degrees (refer to the position of the rotating plate 14 indicated by the dashed-dotted line in Fig. 8D), it stops the hydraulic motor 22 and stops the forward rotation of the rotating plate 14.

[0073] After the control device PLC stops the forward rotation of the rotating plate 14, it extends the pushing cylinder 21 and rotates the pushing plate 15 toward the front dust collection box 3 side. When the control device PLC determines that the rotational position of the pushing plate 15 has reached M degrees, which is the "pushing end position" associated with the B mode in the position information storage table 41 (refer to the position of the pushing plate 15 indicated by the dashed-dotted line in Fig. 8A), it stops the extension of the pushing cylinder 21 and stops the rotation of the pushing plate 15. Thereby, one cycle of the dust loading operation of the rotating plate 14 and the pushing plate 15 is completed.

[0074] The loading mode described above, with the first loading mode being the B mode and the second loading mode (anti-spill mode) being the OFF mode (hereinafter also referred to as the "paper loading mode"), is a loading mode suitable for loading papers such as cardboard, bundles of newspapers, and magazines.

[0075] -In the case of B mode · anti-spill ON mode- Next, the dust loading operation executed when the first loading mode is the B mode and the second loading mode (anti-spill mode) is the ON mode will be described. However, only the differences from the dust loading operation according to the "paper loading mode" will be described, and the description of the same operations will be omitted.

[0076] In the case of the "paper loading mode", after the rotating plate 14 rotates forward from the initial position ("forward rotation end position"), when the rotation position of the rotating plate 14 reaches K degrees, which is the "pushing plate return start position" associated with the OFF mode in the position information storage table 42 (refer to the position of the rotating plate 14 indicated by the solid line in FIG. 8B), the pushing plate 15 starts to rotate toward the rear dust inlet 7 side. On the other hand, when the first loading mode is the B mode and the second loading mode is the ON mode, after the rotating plate 14 rotates forward from the initial position, when the rotation position of the rotating plate 14 reaches J degrees, which is the "pushing plate return start position" associated with the ON mode in the position information storage table 42 (refer to the position of the rotating plate 14 indicated by the two-dot chain line in FIG. 8B), the pushing plate 15 starts to rotate backward. However, as shown by the two-dot chain line in FIG. 8B, the above-mentioned J degrees is the rotation position where the rotating plate 14 closes the opening 7a formed between the rotation axis 17 of the dust inlet 7 and the bottom wall 12.

[0077] Also in the case of this loading mode, similar to the case where the first loading mode is the A mode and the second loading mode is the ON mode, after the rotating plate 14 closes the opening 7a, the pushing plate 15 starts to rotate backward. Therefore, even if the load is an easily rollable load 43 such as a can or a PET bottle, it is possible to prevent the load 43 from spilling out of the dust inlet 7 and outside the dust collection box 4.

[0078] <Another Embodiment 1> In the dust collection vehicle 1 according to the above-described embodiment, it is also possible to provide a dust collection vehicle in which the load spill prevention mode ON / OFF switch 28 is omitted and only the first loading mode can be switched. Further, in the dust collection vehicle 1 according to the above-described embodiment, it is also possible to provide a dust collection vehicle in which the loading mode switching switch 26 is omitted and only the second loading mode can be switched.

[0079] <Another Embodiment 2> In the above embodiment, position information correction means for correcting the position information stored in association with each loading mode may be provided. For example, a correction operation switch that can be operated by an operator is added to the rear operation unit 11 and connected so that a signal from the correction operation switch is input to the control device PLC. Then, according to the correction signal input from the correction operation switch, the control device PLC adds or subtracts a correction angle to the rotation position or rotation angle (the above G degrees, H degrees, L degrees, M degrees, N degrees, P degrees, J degrees, K degrees) stored in association with each loading mode, and applies the rotation position or rotation angle after the addition or subtraction as the "forward rotation end position", "pushing end position", "return end position", and "pushing plate return start position", and it is also possible to perform the above dust loading operation. As the correction operation switch, only one common switch may be provided for the "forward rotation end position", "pushing end position", "return end position", and "pushing plate return start position", or separate switches may be provided for the "forward rotation end position", "pushing end position", "return end position", and "pushing plate return start position". As the correction operation switch, for example, a switch that can continuously change the signal input to the control device PLC, such as a variable resistance switch, can be used.

[0080] By providing the above position information correction means, the operator can finely adjust the "forward rotation end position", "pushing end position", "return end position", and "pushing plate return start position" set for each loading mode according to the type of dust to be loaded.

Industrial Applicability

[0081] The present invention can be applied to a dust collection vehicle.

Explanation of Signs

[0082] PLC control device 1 Dust collection vehicle 3 Dust storage box 4 Dust input box 11 Rear operation unit 12 Bottom wall 13 Dust loading device 14 Rotating plate 15 Pushing plate 17 Rotating shaft 18 - turn shaft 21 - push - in cylinder 22 - hydraulic motor 23 - rotation angle sensor for the rotating plate 24 - rotation angle sensor for the push - in plate 26 - loading mode changeover switch (loading mode reception section) 27 - position information memory section 28 - spill prevention mode ON / OFF switch (loading mode reception section) 41 - position information memory table 42 - position information memory table

Claims

1. A rotating plate that scrapes up the dust and dirt put into the dust and dirt input box, A pushing plate that pushes the dust and dirt scraped up by the rotating plate into the dust and dirt storage box, A rotation angle sensor that detects an arbitrary rotation position of the rotating plate and / or an arbitrary rotation position of the pushing plate, A control device that controls the operation of the rotating plate and / or the pushing plate based on the rotation position of the rotating plate and / or the rotation position of the pushing plate detected by the rotation angle sensor, A loading mode receiving unit that receives the selection of any one of a plurality of loading modes, Comprising, The control device, A position information storage unit that stores at least one piece of position information among the "forward rotation end position" of the rotating plate, the "start position for returning the pushing plate" of the rotating plate, the "pushing end position" of the pushing plate, and the "return end position" of the pushing plate, in association with each loading mode received by the loading mode receiving unit, A dust and dirt scraping process in which the rotating plate is rotated forward from an initial position where the rotating plate is at the "forward rotation end position" and the pushing plate is at the "pushing end position", and when the rotating plate passes through the "start position for returning the pushing plate", the backward rotation of the pushing plate is started, and then the rotating plate is rotated forward to the "forward rotation end position" and the pushing plate is rotated to the "return end position", After the dust and dirt scraping process, a dust and dirt pushing process in which the pushing plate is rotated forward from the "return end position" to the "pushing end position", A dust collection vehicle that executes the above as one cycle of the dust loading operation, The control device applies the position information stored in the position information storage unit in association with the selected loading mode to perform the dust loading operation, It has means for inputting and operating a correction angle to the control device. When the correction angle is input to the control device through this means, at least one of the "forward rotation end position" of the rotating plate, the "start position for returning the pushing plate" of the rotating plate, the "pushing end position" of the pushing plate, and the "return end position" of the pushing plate stored in association with each loading mode is corrected using the input correction angle. It further comprises position information correction means, A dust collection vehicle characterized by the above.

2. A rotating plate that scrapes up the dust and dirt put into the dust and dirt input box, A pushing plate that pushes the dust and dirt scraped up by the rotating plate into the dust and dirt storage box, A rotation angle sensor that detects an arbitrary rotation position of the rotating plate and / or an arbitrary rotation position of the pushing plate, A control device that controls the operation of the rotating plate and / or the pushing plate based on the rotation position of the rotating plate and / or the rotation position of the pushing plate detected by the rotation angle sensor; A loading mode receiving unit that receives a selection of one of a plurality of loading modes; Comprising; The control device; A position information storage unit that stores at least one piece of position information among the "forward rotation end position" of the rotating plate, the "start position for returning the pushing plate" of the rotating plate, the "pushing end position" of the pushing plate, and the "return end position" of the pushing plate, in association with each loading mode received by the loading mode receiving unit; A dust scraping-up process in which the rotating plate is rotated forward from an initial position where the rotating plate is at the "forward rotation end position" and the pushing plate is at the "pushing end position", the backward rotation of the pushing plate is started when the rotating plate passes the "start position for returning the pushing plate", and then the rotating plate is rotated forward to the "forward rotation end position" and the pushing plate is rotated to the "return end position"; After the dust scraping-up process, a dust pushing process in which the pushing plate is rotated forward from the "return end position" to the "pushing end position"; A dust collection vehicle that executes the above as one cycle of the dust loading operation, The control device causes the dust loading operation by applying the position information stored in the position information storage unit in association with the selected loading mode; The position information storage unit; Stores the "first forward rotation end position" and the "first pushing end position" as the "forward rotation end position" of the rotating plate and the "pushing end position" of the pushing plate, respectively, stored in association with any one loading mode; Stores the "second forward rotation end position" and the "second pushing end position" as the "forward rotation end position" of the rotating plate and the "pushing end position" of the pushing plate, respectively, stored in association with any other loading mode; The "second forward rotation end position" is a rotation position advanced by a predetermined angle in the forward rotation direction from the "first forward rotation end position"; The "second pushing end position" is a rotation position advanced by a predetermined angle forward from the "first pushing end position", Characterized by the dust collection vehicle.

3. The dust collection vehicle according to claim 1, The position information storage unit; Stores the "first pushing plate return start position" as the "start position for returning the pushing plate" of the rotating plate stored in association with any one loading mode; As the "pushing plate return start position" of the rotating plate to be stored in association with any other loading mode, the "second pushing plate return start position" is stored. The "second pushing plate return start position" is a rotational position that is advanced by a predetermined angle in the forward rotation direction from the "first pushing plate return start position", and is a rotational position that closes an opening formed between the rotation axis that supports the rotating plate and the bottom wall of the dust bin formed along the orbit of the tip of the rotating plate. A dust collection vehicle characterized by the above.

4. A dust collection vehicle according to any one of Claims 1 to 3, As the rotation angle sensor, a rotation angle sensor for a rotating plate that detects an arbitrary rotation position of the rotating plate by detecting an arbitrary rotation position of a rotation axis that rotates integrally with the rotating plate, and a rotation angle sensor for a pushing plate that detects an arbitrary rotation position of the pushing plate by detecting an arbitrary rotation position of a rotation axis that rotates integrally with the pushing plate. A dust collection vehicle characterized by the above.

Images