Garbage collection vehicle

Abstract

To provide a garbage collection vehicle capable of opening the rear end opening of a garbage collection box by rotating a garbage throw-in box even when the garbage collection box is filled with garbage.SOLUTION: The garbage collection vehicle includes a garbage storage box capable of storing garbage, a garbage throw-in box connected to the rear end opening of the garbage storage box and rotating to allow the rear end opening to open and close, a loading device disposed in the garbage throw-in box and loading garbage thrown into the garbage throw-in box into the garbage storage box, a discharge plate capable of moving in a direction toward or away from the garbage throw-in box within the garbage storage box, and an engagement mechanism that engages the garbage throw-in box with the garbage storage box and prevents the rear end opening from opening with the rotation of the garbage throw-in box. When the engagement of the engagement mechanism is released, the discharge plate moves in a direction away from the garbage throw-in box.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This application relates to refuse collection vehicles. [Background technology]

[0002] The garbage collection vehicle of Patent Document 1 below is equipped with a garbage storage box, a garbage dump box connected to the rear opening of the garbage storage box and capable of rotating to open and close the rear opening, a loading device that loads garbage dumped into the garbage dump box into the garbage storage box, and an opening prevention hook that engages with an engaging portion provided on the garbage dump box to prevent the garbage dump box from rotating and opening the rear opening.

[0003] However, when the trash container is full of trash, the pressure inside the trash container increases, pushing the trash container from the trash container side. As a result, the engagement of the opening prevention hook cannot be released, and it may be impossible to rotate the trash container to open the rear end opening of the trash container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-142878 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the object is to provide a garbage collection vehicle that can rotate the garbage insertion box to open the rear end opening of the garbage collection box even when the garbage collection box is full of garbage. [Means for solving the problem]

[0006] [1] The garbage collection vehicle comprises a garbage storage box capable of storing garbage, a garbage drop box connected to a rear end opening of the garbage storage box and capable of rotating to open and close the rear end opening, a loading device disposed within the garbage drop box and loading garbage dropped into the garbage drop box into the garbage storage box, a discharge plate capable of moving within the garbage storage box in a direction toward or away from the garbage drop box, and an engagement mechanism that engages the garbage drop box with the garbage storage box and prevents the garbage drop box from rotating and opening the rear end opening, When the engagement mechanism is released, the discharge plate moves in a direction away from the trash bin.

[0007] [2] The garbage collection vehicle also includes a garbage storage box capable of storing garbage, a garbage drop box connected to the rear end opening of the garbage storage box and capable of rotating to open and close the rear end opening, a loading device disposed within the garbage drop box and loading garbage dropped into the garbage drop box into the garbage storage box, and an engagement mechanism that engages the garbage drop box with the garbage storage box and prevents the garbage drop box from rotating and opening the rear end opening, The loading device includes a compression plate that swings forward to compress the garbage and rises to push the garbage into the garbage storage box, When the engagement mechanism is released from engagement, the compression plate may be lowered or may be swung rearward.

[0008] [3] The garbage collection vehicle also includes a garbage storage box capable of storing garbage, a garbage drop box connected to the rear end opening of the garbage storage box and capable of rotating to open and close the rear end opening, a loading device disposed within the garbage drop box and loading garbage dropped into the garbage drop box into the garbage storage box, and an engagement mechanism that engages the garbage drop box with the garbage storage box and prevents the garbage drop box from rotating and opening the rear end opening, The loading device includes a rotating plate that rotates in the garbage dump box, and a pusher plate that swings forward and pushes garbage pushed up in the garbage dump box into the garbage storage box as the rotating plate rotates in the forward direction, When the engagement mechanism is released from engagement, the pushing plate may swing backward, or the rotating plate may rotate in the opposite direction.

[0009] [4] In any one of the above [1] to [3] garbage collection vehicles, a first hydraulic device that drives the engagement mechanism; A second hydraulic device that drives the loading device; a control device that controls each part of the garbage collection vehicle; When the control device receives a command from the operating unit to disengage the engagement mechanism and rotate the garbage dump box to open the rear end opening, if the pressure of at least one of the first hydraulic device and the second hydraulic device exceeds a predetermined pressure, the control device may be configured to move the discharge plate in a direction away from the garbage dump box, lower the compression plate, swing the compression plate backward, swing the push plate backward, or rotate the rotating plate in the opposite direction. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a cross-sectional side view of a garbage collection vehicle according to a first embodiment, viewed from the left side; [Figure 2] FIG. 1 is a rear view of a garbage collection vehicle according to the embodiment; [Figure 3] Compression plate operation diagram [Figure 4] FIG. 10 is a side view of the rear of the garbage collection vehicle according to the embodiment, seen from the left side. [Figure 5] A cross-sectional side view of a garbage collection vehicle according to a second embodiment, seen from the left side. [Figure 6] An explanatory diagram of the operation of the rotating plate, pushing plate, and pushing cylinder DETAILED DESCRIPTION OF THE INVENTION

[0011] In each drawing, the dimensions of the components may be enlarged or reduced relative to the actual dimensions, for example, to facilitate understanding, and the dimensional ratios between the drawings may not be consistent. Note that in each drawing, for example, to facilitate understanding, some of the components may be omitted.

[0012] Terms including ordinal numbers such as "first" and "second" are used to describe various components, but these terms are used only to distinguish one component from another, and the components are not particularly limited by these terms. The number of components including ordinal numbers is not particularly limited, and may be, for example, one. Furthermore, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0013] First Embodiment A first embodiment of a garbage collection vehicle will be described below with reference to Figures 1 to 4. Note that the following embodiment is provided as an example to help understand the configuration of the garbage collection vehicle, and is not intended to limit the configuration of the garbage collection vehicle.

[0014] In FIG. 1, the front-rear direction (also referred to as the vehicle front-rear direction) and the up-down direction of the refuse collection vehicle G are indicated by arrows, and the direction perpendicular to the paper surface is the left-right direction (also referred to as the vehicle width direction).

[0015] As shown in FIG. 1, the refuse collection vehicle G comprises a driver's cab C, a body frame F extending rearward from the bottom of the driver's cab C, a refuse collection box B that is disposed rearward of the driver's cab C and above the body frame F and that contains refuse, and a refuse drop box T that is connected to the rear end of the refuse collection box B. The refuse collection vehicle G also comprises a loading device 2 that loads refuse that has been dropped into the refuse drop box T into the refuse collection box B. The refuse collection vehicle G also comprises a discharge device 1 that discharges the refuse that has been loaded into the refuse collection box B.

[0016] The trash collection box B has a bottom wall B1 and a top wall B2 that face each other in the vertical direction, a pair of side walls B3, B3 that connect the left and right ends of the bottom wall B1 and the top wall B2, and a front wall B4 that connects the front ends of the bottom wall B1 and the top wall B2. The rear surface of the trash collection box B is inclined backward from its top to its bottom, and a rear end opening (not shown) is open across the entire surface.

[0017] As shown in FIG. 1, the garbage collection box B is mounted on a body frame F of a garbage collection vehicle G, and the bottom wall B1 of the garbage collection box B forms a gently sloping surface that slopes downward toward the rear.

[0018] 1, the discharge device 1 provided in the trash collection box B will be described. The discharge device 1 has a discharge plate 10 that can move forward and backward relative to the trash drop box T, and a storage space B5 for storing trash is formed behind the discharge plate 10 (between the discharge plate 10 and the rear end opening inside the trash collection box B).

[0019] The discharge plate 10 is composed of a discharge plate body 10a that spans almost the entire width of the internal space of the trash collection box B, and a support frame 10b that is integrally connected to the back surface of the discharge plate body 10a. A guide mechanism 11 is provided between the discharge plate 10 and the trash collection box B to guide and support the discharge plate 10 so that it can slide back and forth in an upright position.

[0020] A single-stage or multi-stage (telescopic) hydraulic discharge cylinder 12 that drives the discharge plate 10 back and forth is connected between the back surface of the discharge plate 10 and the garbage collection box B. The discharge cylinder 12 is arranged to extend in the front-to-rear direction substantially along the bottom wall B1 of the garbage collection box B.

[0021] With the above configuration, when the storage space B5 is empty, the discharge plate 10 is in an initial position (solid line in Figure 1) located slightly forward of the discharge position, and the garbage loaded into the garbage storage box B by the loading device 2 is compressed between the loading device 2 and the discharge plate 10. Then, as the amount of garbage loaded increases, the discharge cylinder 12 gradually contracts, moving the discharge plate 10 forward until it moves to the forward position shown by the two-dot chain line in Figure 1, thereby expanding the storage space B5. Also, by extending the discharge cylinder 12 and moving the discharge plate 10 to a rear position protruding from the garbage storage box B, the garbage stored in the garbage storage box B can be discharged to the outside.

[0022] As shown in Figure 1, a garbage dump box T is connected to the rear opening of the garbage collection box B. The garbage dump box T is pivoted by a hinge P provided at the upper rear part of the garbage collection box B. This allows the garbage dump box T to rotate up and down around the hinge P, enabling it to open and close relative to the garbage collection box B. The hinges P are provided on both the left and right ends of the garbage collection box B.

[0023] The garbage bin T is configured to rotate between a closed position (solid line in FIG. 1) in which it closes the rear end opening of the garbage collection box B, and an open position (chain double-dashed line in FIG. 1) in which it opens the rear end opening and can discharge garbage. In FIG. 2, a pair of swing cylinders 26, located on both the left and right ends of the garbage bin T, are attached at their upper ends to the garbage collection box B and at their lower ends to the garbage bin T. When the swing cylinders 26 are extended, the garbage bin T is rotated upward (opened) (chain double-dashed line in FIG. 1), and when they are retracted, the garbage bin T is rotated downward (closed) (solid line in FIG. 1).

[0024] A trash inlet T1 through which trash is dropped is formed at the rear of the trash bin T, and a lid T5 is provided to open and close the trash inlet T1 by sliding it up and down. In addition, an opening T2 is provided at the front lower part of the trash bin T to store the trash in the trash storage box B.

[0025] Referring to FIG. 1, the loading device 2 provided in the garbage bin T will be described. First, guide rails 23 extending diagonally up and down are provided on the left and right side walls T3 of the garbage bin T, and two pairs of rollers 25 (one pair each) attached to a slider 20 can move diagonally up and down within the guide rails 23. The slider 20 is formed by connecting left and right members having a side shape as shown in FIG. 1 with a plate or the like (not shown) extending in the vehicle width direction to form an integrated unit. A compression plate 21 is rotatably attached to the lower end of the slider 20 via a pin 20a. The compression plate 21 is also formed by connecting left and right members having a side shape as shown in FIG. 1 with a plate or the like (not shown) extending in the vehicle width direction to form an integrated unit. Meanwhile, the cylinder side end of the push cylinder 22 is attached to the left and right side walls T3 with a pin 22a, and the piston side end is connected to the upper end of the slider 20 with a pin 20b. On the other hand, the cylinder side end of the press cylinder 24 is connected to the compression plate 21 by a pin 24a, and the piston side end is connected to the upper end of the slider 20 by a pin 20b. The slider 20, together with the compression plate 21, rises obliquely when the push cylinder 22 is extended, and falls obliquely when the push cylinder 22 is retracted. In addition, the compression plate 21 rotates clockwise around the pin 20a when the press cylinder 24 is extended, and rotates counterclockwise (also referred to as reversing) when the press cylinder 24 is retracted.

[0026] With the above configuration, the garbage thrown into the garbage drop box T is moved to the rear position by the reversal process of the compression plate 21, compressed by the primary compression and secondary compression processes, and pushed into the garbage storage box B by the pushing process. This operation constitutes one cycle, and the garbage thrown into the garbage drop box T is loaded into the garbage storage box B. In order to operate each of the above processes sequentially, various sensors are provided at appropriate locations inside the garbage drop box T to detect the raised and lowered positions of the slider 20 and the rear and front positions of the compression plate 21.

[0027] The loading operation will be described in detail below. The loading operation is performed by extending and retracting the push cylinder 22 and the press cylinder 24, and includes a series of steps: an inversion step (shown in FIG. 3(a)) in which the compression plate 21 is rotated backward from the forward position to the rearward position while the slider 20 is held in the raised position; a primary compression step (shown in FIG. 3(b)) in which the slider 20 is lowered from the raised position to the lowered position while the compression plate 21 is held in the rearward position; a secondary compression step (shown in FIG. 3(c)) in which the compression plate 21 is rotated forward from the rearward position to the forward position while the slider 20 is held in the lowered position; and a pushing step (shown in FIG. 3(d)) in which the slider 20 is raised from the lowered position to the raised position while the compression plate 21 is held in the forward position. By performing the loading operation, the input garbage in the garbage input box T is forcibly pushed into the garbage storage box B.

[0028] 4, there is provided an engagement mechanism 3 that engages the trash drop box T and the trash collection box B. The engagement mechanism 3 prevents the trash drop box T from rotating and the rear end opening of the trash collection box B from opening.

[0029] The engagement mechanism 3 includes a hook 30 rotatably attached to the garbage storage box B side, a lock pin 31 fixed to the garbage drop box T side, and a lock cylinder 32 for rotating the hook 30.

[0030] The hook 30 is rotatably attached via a pin 30a to a bracket 33 fixed to the underside of the garbage collection box B. The lock pin 31 is fixed to the front of the lower part of the garbage drop box T, and the tip of the hook 30 is releasably engaged with it from below. The cylinder side end of the lock cylinder 32 is rotatably attached to the lower part of the garbage collection box B. The piston side end of the lock cylinder 32 is rotatably attached to the hook 30.

[0031] With the above configuration, when the lock cylinder 32 is extended from the locked state shown in Fig. 4, the hook 30 rotates clockwise in Fig. 4 around the pin 30a. This disengages the hook 30 from the lock pin 31, and the trash bin T enters an unlocked state. When the lock cylinder 32 is retracted from this unlocked state, the hook 30 rotates counterclockwise in Fig. 4 around the pin 30a, and the hook 30 engages with the lock pin 31, and the trash bin T is locked.

[0032] The external operating unit provided on the garbage bin T will be described with reference to Figure 2. Switch boxes 61 and 62 are provided at the rear of both the left and right side walls T3 of the garbage bin T. A selection switch 61a is provided on the side of the switch box 61 to select either the "continuous cycle" or "single cycle" operation mode for the operation of the loading device 2, and a loading switch 61b is provided on the front to start the loading operation in each operation mode, and a stop switch 61c is provided to stop the continuous cycle operation. The other switches are switches to be used only in emergencies, and detailed description thereof will be omitted. A stop switch 61c is also provided on the right switch box 62.

[0033] The garbage collection vehicle G is equipped with a control device 60 that controls each part. As shown in Fig. 1, the control device 60 is provided, for example, on the front wall B4 of the garbage collection box B. The control device 60 receives commands from an operating unit including switch boxes 61, 62 and an operating device (not shown) provided in the driver's cab C, and adjusts the hydraulic pressure of the hydraulic oil supplied to each hydraulic device (discharge cylinder 12, push cylinder 22, press cylinder 24, swing cylinder 26, lock cylinder 32, etc.) to drive each part (garbage drop box T, discharge device 1, loading device 2, engagement mechanism 3, etc.).

[0034] Incidentally, when discharging the trash loaded in the trash collection box B, it is necessary to release the engagement of the engagement mechanism 3 (engagement between the hook 30 and the lock pin 31) and rotate the trash drop box T to open the rear end opening of the trash collection box B. However, as shown in FIG. 3(d), the trash is pushed into the trash collection box B by the compression plate 21 of the loading device 2 and compressed between the discharge plate 10, so when the trash collection box B is fully loaded with trash, the pressure of the trash inside the trash collection box B is high. As a result, the trash drop box T is also pushed from the side of the trash collection box B, and it may be impossible to release the engagement of the engagement mechanism 3 between the trash drop box T and the trash collection box B.

[0035] Therefore, the control device 60 contracts the discharge cylinder 12 to move the discharge plate 10 slightly forward before disengaging the engagement mechanism 3 and rotating the trash bin T to open it. This reduces the pressure of the trash inside the trash container B, making it possible to disengage the engagement mechanism 3. Specifically, the pressure of the trash inside the trash container B decreases, weakening the force pushing the trash container T backward relative to the trash container B. This allows for a gap in the engagement between the hook 30 and the lock pin 31, making it possible to disengage the engagement mechanism 3. Therefore, even if the trash container B is fully loaded with trash, the trash container T can be rotated to open the rear end opening of the trash container B. Note that a gap may be provided between the discharge plate 10 and the front wall B4 of the trash container B to allow the discharge plate 10 to move forward even when the trash container B is almost completely filled with trash.

[0036] Furthermore, the control device 60 may contract the press cylinder 24 to invert the compression plate 21 from the state shown in FIG. 3(d) before disengaging the engagement mechanism 3 and rotating the garbage bin T to open it. This reduces the pressure of the garbage inside the garbage collection box B, making it possible to disengage the engagement mechanism 3. Therefore, even if the garbage collection box B is fully loaded with garbage, the garbage bin T can be rotated to open the rear end opening of the garbage collection box B. The compression plate 21 may be inverted to the state shown in FIG. 3(a), but it may also be inverted slightly from the state shown in FIG. 3(d).

[0037] Furthermore, the control device 60 may contract the push cylinder 22 to lower the compression plate 21 from the state shown in FIG. 3(d) before disengaging the engagement mechanism 3 and rotating the garbage bin T to open it. This reduces the pressure of the garbage inside the garbage collection box B, making it possible to disengage the engagement mechanism 3. Therefore, even if the garbage collection box B is fully loaded with garbage, the garbage bin T can be rotated to open the rear end opening of the garbage collection box B. The compression plate 21 may be lowered to the state shown in FIG. 3(c), but may also be lowered slightly from the state shown in FIG. 3(d).

[0038] In addition, the control device 60 may disengage the engagement mechanism 3 and contract the push cylinder 22 to lower the compression plate 21, and contract the press cylinder 24 to invert the compression plate 21 before rotating and opening the garbage dump box T.

[0039] Second Embodiment The second embodiment has the same configuration as the first embodiment except for the configuration described below, so the commonalities will be omitted and differences will be mainly described. Note that in the second embodiment, elements having substantially the same configuration or substantially the same function (action) as the parts described in the first embodiment will be shown, and their description will not be repeated.

[0040] As shown in FIG. 5, the loading device 2 includes a rotating plate 27 that rotates within the trash dump box T, and a pushing plate 28 that swings within the trash dump box T.

[0041] The rotating plate 27 is a member that rakes up the trash that has been thrown into the trash throwing box T from an arc-shaped hopper T6 formed inside the trash throwing box T to the front upper part.

[0042] The rotating plate 27 is integral with a lower support shaft 27a extending in the left-right direction and is rotatable together with the lower support shaft 27a about its central axis. The lower support shaft 27a is connected to a hydraulic motor (not shown) via a power transmission mechanism (not shown). The lower support shaft 27a is driven to rotate by driving the hydraulic motor (not shown), and the hydraulic motor drives the lower support shaft 27a to rotate, thereby rotating the rotating plate 27, which is integral with the lower support shaft 27a. Details of the hydraulic motor and the power transmission mechanism are disclosed in, for example, JP 2018-193219 A.

[0043] The pusher plate 28 is a member that moves and pushes the garbage that has been scraped up by the rotary plate 27 and is on the rotary plate 27 into the garbage storage box B that is connected to the front of the garbage drop box T. The pusher plate 28 is integral with an upper support shaft 28a that extends in the left-right direction, and can swing forward and backward about that axis. The pusher plate 28 swings forward and backward about the upper support shaft 28a by the extension and contraction of a pair of pusher cylinders 29 that are provided in the left-right direction. These pusher cylinders 29 are arranged on the left-right outer side of the side walls T3 that are arranged on both the left and right sides. The cylinder side ends of the pusher cylinders 29 are attached to both sides of the side wall T3 by pins 29a, and the piston side ends are connected to the upper end of the pusher plate 28 by pins 29b.

[0044] The garbage thrown into the garbage drop box T is loaded into the garbage storage box B by the rotation of the rotary plate 27 and the swinging of the push-in plate 28.

[0045] The loading operation will be described in detail. In the loading operation, first, a hydraulic motor (not shown) is driven to start a rotation process in which the rotating plate 27 rotates clockwise from the original position of the rotating plate 27 shown in Fig. 6(a). The clockwise rotation of the rotating plate 27 shown in Fig. 6(a) is referred to as the forward rotation.

[0046] Next, when the rotating plate 27 reaches the upright position shown in Fig. 6(b), the tip of the pushing plate 28 performs a retreating process in which it swings rearward due to the contraction of the pushing cylinder 29, and when this tip swings rearward to the retreat end position shown in Fig. 6(c), the rearward swing of the pushing plate 28 stops. At this time, the rotating plate 27 continues to rotate even while the pushing plate 28 is retreating, so interference between the pushing plate 28 and the rotating plate 27 is prevented during the retreating movement.

[0047] Thereafter, the rotating plate 27 continues to rotate and returns to the original position shown in Fig. 6(d), whereupon the rotation of the rotating plate 27 stops and the pushing cylinder 29 extends, thereby performing the pushing step in which the tip of the pushing plate 28 swings forward. When the tip of the pushing plate 28 swings forward to the position shown in Fig. 6(a) (the pushing end position), the forward swing of the pushing plate 28 stops.

[0048] In this way, the hydraulic motor and the pushing cylinder 29 work together to rotate the rotating plate 27 and push back and forth with the pushing plate 28 completing one cycle, and the garbage thrown into the garbage dump box T is loaded into the garbage storage box B.

[0049] Before releasing the engagement mechanism 3 and rotating the trash bin T to open it, the control device 60 contracts the pushing cylinder 29 to swing the pushing plate 28 rearward from the state shown in FIG. 6(a). This reduces the pressure of the trash inside the trash collection box B, making it possible to release the engagement of the engagement mechanism 3. Specifically, the pressure of the trash inside the trash collection box B decreases, and the force pushing the trash collection box T rearward against the trash collection box B weakens, creating room for the engagement between the hook 30 and the lock pin 31, making it possible to release the engagement of the engagement mechanism 3. Therefore, even if the trash collection box B is fully loaded with trash, the trash collection box T can be rotated to open the rear end opening of the trash collection box B.

[0050] Furthermore, the control device 60 may drive a hydraulic motor (not shown) to rotate the rotating plate 27 counterclockwise (reverse direction) from the state shown in Figure 6(a) before releasing the engagement mechanism 3 and rotating the garbage collection box T to open it. This reduces the pressure of the garbage inside the garbage collection box B, making it possible to release the engagement of the engagement mechanism 3. Therefore, even if the garbage collection box B is fully loaded with garbage, the garbage collection box T can be rotated to open the rear end opening of the garbage collection box B.

[0051] In addition, the control device 60 may release the engagement of the engagement mechanism 3 and, before rotating the garbage dump box T to open it, contract the pushing cylinder 29 to swing the pushing plate 28 backward from the state shown in Figure 6(a), and drive a hydraulic motor (not shown) to rotate the rotating plate 27 counterclockwise (reverse direction) from the state shown in Figure 6(a).

[0052] When the pusher plate 28 is swung backward to reduce the pressure of the dust inside the dust collection box B, there is a possibility that the dust may flow back into the dust box T and be released to the outside through the opening T2, so when the pusher plate 28 is swung backward, the rotating plate 27 may be placed on standby in a lower position (a position between Figures 6(c) and 6(d)). In this way, the rotating plate 27 can restrain the dust from heading toward the opening T2 and prevent the dust from being released to the outside through the opening T2.

[0053] The refuse collection vehicle is not limited to the configuration of the above-described embodiment, nor is it limited to the above-described effects. Furthermore, various modifications can be made to the refuse collection vehicle without departing from the spirit of the present invention. For example, it is possible to select one or more of the configurations and methods according to the various modified examples described below and use them in the configurations and methods according to the above-described embodiment.

[0054] (A) In the garbage collection vehicle G according to the first embodiment, when the engagement mechanism 3 is released, the discharge plate 10 moves forward and the compression plate 21 moves down or swings backward. However, the garbage collection vehicle G is not limited to this configuration. The garbage collection vehicle G may also be configured such that when the engagement mechanism 3 is released, the discharge plate 10 moves forward and the compression plate 21 moves down or swings backward. In other words, the pressure of the garbage in the garbage storage box B may be reduced by moving only one of the discharge plate 10 and the compression plate 21.

[0055] (B) In the garbage collection vehicle G according to the first and second embodiments described above, the garbage loaded into the garbage collection box B is discharged by moving the discharge plate 10 (discharge plate type). However, the garbage collection vehicle G is not limited to this configuration. The garbage collection vehicle G may also be configured to discharge garbage by dumping the garbage collection box B (dump type). At this time, when the engagement mechanism 3 is released from engagement, the compression plate 21 descends, the compression plate 21 swings backward, the push plate 28 swings backward, or the rotating plate 27 rotates in the opposite direction.

[0056] (C) In the garbage collection vehicle G according to the first and second embodiments, when the control device 60 receives a command from the operation unit to disengage the engagement mechanism 3 and rotate the garbage bin T to open it, it moves the discharge plate 10, compression plate 21, push-in plate 28, or rotation plate 27. However, the garbage collection vehicle G is not limited to this configuration. The garbage collection vehicle G is equipped with a first hydraulic device (lock cylinder 32) that drives the engagement mechanism 3, a second hydraulic device (push cylinder 22, press cylinder 24, push cylinder 29, hydraulic motor) that drives the loading device 2, and a control device 60 that controls each part of the garbage storage vehicle G.When the control device 60 receives a command from the operating unit to disengage the engagement mechanism 3 and rotate the garbage dump box T to open the rear end opening of the garbage dump box B, if the pressure of at least one of the first hydraulic device (lock cylinder 32) and the second hydraulic device (push cylinder 22, press cylinder 24, push cylinder 29, hydraulic motor) exceeds a predetermined pressure, the control device 60 may be configured to move the discharge plate 10 in a direction away from the garbage dump box T, lower the compression plate 21, swing the compression plate 21 backward, swing the push plate 28 backward, or rotate the rotating plate 27 in the opposite direction. Here, when the pressure of the second hydraulic device that drives the loading device 2 is high, it can be assumed that a large force is also acting on the engagement mechanism 3. Therefore, when the pressure of at least one of the first hydraulic device (lock cylinder 32) and the second hydraulic device (push cylinder 22, press cylinder 24, push-in cylinder 29, hydraulic motor) exceeds a predetermined pressure, it can be said that the pressure of the garbage in the garbage collection box B is too high and the engagement of the engagement mechanism 3 cannot be released. Therefore, when the pressure of at least one of the first hydraulic device (lock cylinder 32) and the second hydraulic device (push cylinder 22, press cylinder 24, push-in cylinder 29, hydraulic motor) exceeds a predetermined pressure, it is possible to release the engagement of the engagement mechanism 3 by moving the discharge plate 10, compression plate 21, push-in plate 28, or rotation plate 27 to reduce the pressure of the garbage in the garbage collection box B.

[0057] (D) In ​​the refuse collection vehicles G according to the first and second embodiments, the hook 30 is driven by a hydraulic device (the lock cylinder 32 in the first and second embodiments), but is not limited to this. The hook 30 may also be driven by, for example, a pneumatic device.

[0058] (E) A position sensor such as a proximity sensor may be used to detect that the hook 30 has not moved to the open state or has not moved from the closed state, thereby detecting a state in which the engagement mechanism 3 cannot be disengaged. For example, in a garbage collection vehicle G, when the control device 60 receives a command from the operating unit to disengage the engagement mechanism 3 and rotate the garbage drop box T to open the rear end opening of the garbage storage box B, if the position sensor detects a state in which the engagement mechanism 3 cannot be disengaged, the control device 60 may move the discharge plate 10, the compression plate 21, the push plate 28, or the rotation plate 27.

[0059] (F) In addition, in the garbage collection vehicle G, when the control device 60 receives a command from the operating unit to disengage the engagement mechanism 3 and rotate the garbage drop box T to open the rear end opening of the garbage storage box B, it may move the discharge plate 10, compression plate 21, push plate 28, or rotating plate 27 after a predetermined time has elapsed. [Explanation of symbols]

[0060] 1...discharge device, 2...loading device, 3...engagement mechanism, 10...discharge plate, 10a...discharge plate body, 10b...support frame, 11...guide mechanism, 12...discharge cylinder, 20...slider, 20a...pin, 20b...pin, 21...compression plate, 22...push cylinder, 22a...pin, 23...guide rail, 24...press cylinder, 24a...pin, 25...roller, 26...swing cylinder, 27...rotating plate, 27a...lower support shaft, 28...push plate, 28a...upper support shaft, 29...push cylinder, 29a...pin, 29b...pin , 30...hook, 30a...pin, 31...lock pin, 32...lock cylinder, 33...bracket, 60...control device, 61...switch box, 61a...selection switch, 61b...loading switch, 61c...stop switch, 62...switch box, B...garbage storage box, B1...bottom wall, B2...top wall, B3...side wall, B4...front wall, B5...storage space, C...operator's cab, F...body frame, G...garbage collection vehicle, P...hinge, T...garbage inlet, T1...garbage inlet, T2...opening, T3...side wall, T5...lid, T6...hopper

Claims

1. a garbage collection box capable of storing garbage; a garbage drop box connected to a rear end opening of the garbage collection box and capable of rotating to open and close the rear end opening; a loading device arranged within the garbage drop box and loading garbage dropped into the garbage drop box into the garbage collection box; a discharge plate capable of moving within the garbage collection box in a direction toward or away from the garbage drop box; and an engagement mechanism that engages the garbage drop box and the garbage collection box and prevents the garbage drop box from rotating and opening the rear end opening, When the engagement mechanism is released, the discharge plate moves in a direction away from the garbage dump box.

2. a garbage collection box capable of storing garbage; a garbage drop box connected to a rear end opening of the garbage collection box and capable of rotating to open and close the rear end opening; a loading device disposed within the garbage drop box and loading garbage dropped into the garbage drop box into the garbage collection box; and an engagement mechanism that engages the garbage drop box with the garbage collection box and prevents the garbage drop box from rotating and opening the rear end opening, The loading device includes a compression plate that swings forward to compress the garbage and rises to push the garbage into the garbage storage box, When the engagement mechanism is disengaged, the compression plate descends or swings rearward.

3. a garbage collection box capable of storing garbage; a garbage drop box connected to a rear end opening of the garbage collection box and capable of rotating to open and close the rear end opening; a loading device disposed within the garbage drop box and loading garbage dropped into the garbage drop box into the garbage collection box; and an engagement mechanism that engages the garbage drop box with the garbage collection box and prevents the garbage drop box from rotating and opening the rear end opening, The loading device includes a rotating plate that rotates in the garbage dump box, and a pusher plate that swings forward and pushes garbage pushed up in the garbage dump box into the garbage storage box as the rotating plate rotates in the forward direction, When the engagement mechanism is disengaged, the push plate swings backward or the rotating plate rotates in the opposite direction.

4. a first hydraulic device that drives the engagement mechanism; a second hydraulic device that drives the loading device; a control device that controls each part of the garbage collection vehicle; A garbage collection vehicle as described in any one of claims 1 to 3, wherein when the control device receives a command from an operating unit to disengage the engagement mechanism and rotate the garbage bin to open the rear end opening, if the pressure of at least one of the first hydraulic device and the second hydraulic device exceeds a predetermined pressure, the control device moves the discharge plate in a direction away from the garbage bin, lowers the compression plate, swings the compression plate backward, swings the push plate backward, or rotates the rotating plate in the opposite direction.

Images