Refuse collection vehicle

Abstract

The present invention provides a refuse collection vehicle that prevents the refuse guide plate from rotating using a retaining member, while allowing for safe operation when closing the opening and closing door. [Solution] The refuse collection vehicle 1 comprises a refuse container 4 on a chassis 2, a refuse input box 5 connected to the rear end of the refuse container 4 and having a refuse input opening 7 at the rear, an opening / closing door 8 for opening and closing the refuse input opening 7, a refuse guide plate 80 that can rotate together with the opening / closing door 8 to close the refuse input opening 7, and a retaining member 90 installed on the opening / closing door 8 and provided to protrude from the lower end of the opening / closing door 8. The retaining member 90 has a restricting part 92 that restricts the movement of the refuse guide plate 80 from the upright position toward the rear of the vehicle when the opening / closing door 8 is closed, and a rotating part 91 that can rotate toward the front of the vehicle when it comes into contact with an object.

Description

Technical Field

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

Background Art

[0002] Conventionally, a garbage collection vehicle having a pressing member for preventing the rotation of a garbage guide plate provided below a garbage inlet has been known (for example, see Patent Document 1). In this garbage collection vehicle, the pressing member is provided at the lower center of an opening / closing door that opens and closes the garbage inlet, and simultaneously with closing the opening / closing door, the rotation of the garbage guide plate is restricted by the pressing member.

[0003] Also, a garbage collection vehicle having an opening / closing door that can be automatically opened and closed by an actuator has been known (for example, see Patent Document 2). In this garbage collection vehicle, an edge switch (pressure sensor) is provided at the lower end of the opening / closing door to prevent an operator from being caught by the opening / closing door.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In refuse collection vehicles equipped with the aforementioned retaining members on the opening and closing doors, the upright refuse guide plate and the retaining members are staggered, causing shear force to act. Therefore, compared to vehicles without retaining members, workers had to be more careful to avoid getting caught. Furthermore, in refuse collection vehicles equipped with the aforementioned edge switches on the opening and closing doors, the edge switches are contact-type sensors that detect pressure after a worker's hand has been caught and stop the opening and closing doors. This inevitably results in a certain amount of pressure being applied to the hand, failing to provide workers with sufficient peace of mind.

[0006] The present invention has been made in view of the circumstances described above, and aims to provide a refuse collection vehicle that prevents the refuse guide plate from rotating with a retaining member, while allowing for safe operation when closing the opening and closing door. [Means for solving the problem]

[0007] The present invention provides the following means for solving the above-mentioned problems. That is, the present invention provides a garbage collection vehicle comprising: a garbage container on a chassis; a garbage input box connected to the rear end of the garbage container and having a garbage input opening at the rear; an opening and closing door for opening and closing the garbage input opening; a garbage guide plate rotatable together with the opening and closing door to close the garbage input opening; and a retaining member installed on the opening and closing door and provided to protrude from the lower end of the opening and closing door, wherein the retaining member has a restricting part that restricts the movement of the garbage guide plate from the upright position toward the rear of the vehicle when the opening and closing door is closed, and a rotating part that can rotate toward the front of the vehicle upon contact with an object.

[0008] With the above configuration, when a worker's hand or other body part comes into contact with the rotating part, the retaining member rotates, preventing the retaining member and the waste guide plate from becoming misaligned. This reduces the likelihood of shear force acting on a hand or other body part if it gets caught, thus preventing injury. As a result, the retaining member prevents the waste guide plate from rotating, allowing for safe operation when closing the opening and closing door.

[0009] In the refuse collection vehicle with the above configuration, it is preferable that the restricting unit is located behind the refuse guide plate in the upright position when the opening and closing door is closed, and that the rotating unit is restricted from rotating towards the rear of the vehicle from the position where it is not in contact with an object.

[0010] According to the above configuration, injuries can be prevented without impairing the function of the retaining member in holding the waste guide plate in an upright position.

[0011] In the garbage collection vehicle with the above configuration, it is preferable that the vehicle includes an actuator for opening and closing the opening and closing door, a control device for controlling the actuator, and a contact detection unit for detecting when an object has come into contact with the retaining member, wherein the control device has a stop unit for stopping the opening and closing operation of the opening and closing door by the actuator based on the detection result of the contact detection unit, and the contact detection unit is configured to detect contact with an object triggered by the rotation of the retaining member.

[0012] With the above configuration, the contact detection unit detects the rotation of the retaining member and stops the opening and closing operation of the door, thereby safely stopping the door before pressure is applied to the worker's hands or other body parts.

[0013] In the garbage collection vehicle with the above configuration, the contact detection unit comprises a connecting part connected to the rotating part, a rotating shaft located behind the vehicle relative to the connecting part, a cam member that rotates around the rotating shaft by the rotation of the rotating part transmitted from the connecting part, and a detection sensor that detects the rotation of the cam member. Preferably, the rotating shaft is the rotation center of the rotating part and is located behind the vehicle relative to the rotating part in a side view.

[0014] With the above configuration, by sharing the pivot axis between the rotating part and the contact detection part, the number of parts can be reduced and space can be saved. In addition, by positioning the pivot axis on the rear side of the vehicle side of the rotating part of the retaining member, the rotating part of the retaining member can be reliably rotated toward the front side of the vehicle.

[0015] In the garbage collection vehicle having the above-described configuration, a protrusion extending toward the detection sensor is formed on the cam member, and it is preferable that the detection sensor and the protrusion are disposed on the inner side of the opening / closing door.

[0016] According to the above-described configuration, since the detection sensor and the protrusion are not exposed to the outside, a highly durable structure can be achieved.

Effects of the Invention

[0017] According to the garbage collection vehicle of the present invention, when an operator's hand or the like contacts the rotating part, the pressing member rotates. Therefore, the pressing member and the dust guide plate do not become staggered, and even if a hand or the like is sandwiched, a shearing force hardly acts, preventing injury. As a result, when closing the opening / closing door while preventing the rotation of the dust guide plate by the pressing member, the operation can be performed with confidence.

Brief Description of the Drawings

[0018] [Figure 1] It is a side view showing a schematic configuration of a garbage collection vehicle according to an embodiment of the present invention. [Figure 2] It is a rear view of the garbage collection vehicle. [Figure 3] It is a side view showing a part of the rear portion of the garbage collection vehicle broken away. [Figure 4] It is a simplified hydraulic circuit diagram of a dust loading device provided in the garbage collection vehicle. [Figure 5] It is a view of the opening / closing door and the pressing member of the garbage collection vehicle seen from the back side. [Figure 6] It is a cross-sectional view taken along line X1-X1 of FIG. 5. [Figure 7] In FIG. 6, it is a view showing a state when the pressing member rotates with respect to the opening / closing door. [Figure 8] It is a cross-sectional view taken along line X2-X2 of FIG. 5. [Figure 9] In FIG. 8, it is a view showing a state when the pressing member rotates with respect to the opening / closing door. [Figure 10] It is a perspective view when the cross-section taken along line X3-X3 of FIG. 5 is viewed obliquely. [Figure 11] FIG. 10 is a view showing a state when the pressing member rotates with respect to the opening / closing door. [Figure 12] FIG. 5 is a perspective view showing the opening / closing door and the pressing member when viewed from the X4 direction in FIG. 10.

MODE FOR CARRYING OUT THE INVENTION

[0019] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0020] FIGS. 1 to 4 show a dust collection vehicle 1 according to an embodiment of the present invention. This dust collection vehicle 1 includes a travelable vehicle body 2, a cab 3 and a dust collection box 4 provided on the vehicle body 2, a dust input box 5 connected to the rear opening 4a of the dust collection box 4 and having a dust input port 7 into which dust is input, a dust loading device 6 provided in the dust input box 5 for loading dust into the dust collection box 4, and an opening / closing door 8 that opens and closes the dust input port 7 by sliding between a closed position and an open position. A dust guide plate 80 is provided along the lower edge portion extending in the vehicle width direction of the dust input port 7, extending along substantially the entire lower edge portion of the lower edge portion of the dust input port 7 and being capable of undulating in the vehicle front-rear direction. The dust guide plate 80 is provided so as to be rotatable about a rotation axis provided in the vehicle width direction, and is rotatable between a substantially vertical standing state and a substantially horizontal unfolded state shown in FIG. 2. The dust guide plate 80 closes the dust input port 7 together with the opening / closing door 8 in the standing state. Note that a discharge plate that can slide back and forth may be provided in the dust collection box 4, the dust input box 5 may be configured to be rotatable about an upper rotation axis to open and close the rear opening 4a, or the dust collection box 4 may be configured to be tiltable.

[0021] As shown in Figure 3, the refuse loading device 6 of this embodiment is, for example, a press type, and guide groove members 20 made of channel steel are provided on both side walls 9 of the refuse input box 5, serving as reinforcing frames and inclined from the front upper to the rear lower. A lifting plate 21 that extends across the full width of the refuse input box 5 is housed inside. On the other hand, a lifting plate support shaft 21a is inserted through support parts provided at the left and right ends of the upper rear of the lifting plate 21. This lifting plate support shaft 21a is positioned to match the sliding distance of the lifting plate 21 and protrude from the inside to the outside of the side wall 9, passing through a sliding opening 22 formed in the side wall 9 of the refuse input box 5. A lifting cylinder 23, provided on the outside of the refuse input box 5 along the inclination direction of the guide groove members 20, is connected between the lifting plate support shaft 21a protruding outward from the side wall of the refuse input box 5 and the lower part of the refuse input box 5. The extension and retraction of this lifting cylinder 23 causes the lifting plate 21 to move up and down along the guide groove member 20.

[0022] At the lower end of the lifting plate 21, one end of a compression plate 24, which extends across the full width of the waste input box 5, is supported so as to be able to swing back and forth. The tip of this compression plate 24 is slightly bent forward. A swing cylinder 25 is connected between a connecting part protruding from the back of the compression plate 24 and a support part provided on the upper back of the lifting plate 21, and the compression plate 24 swings back and forth by the extension and retraction of this swing cylinder 25. The waste loading device 6 is configured to perform waste loading operations in which the processes of inverting, lowering, compressing, and raising the compression plate 24 constitute one cycle. The waste loading device 6 may also be a rotary plate type equipped with a pushing plate that reciprocates with a hydraulic cylinder and a rotating plate that is rotationally driven.

[0023] The opening / closing door 8 has a roughly rectangular plate shape, and rollers provided at both the left and right ends move along rail members provided on the inside of the left and right side walls 9, allowing it to slide up and down between a closed position and an open position. The opening / closing door 8 can be opened and closed automatically by an opening / closing mechanism (not shown). The opening / closing mechanism is equipped with an electric motor as an actuator for the opening / closing door 8, and the control device controls the electric motor to slide the opening / closing door 8, thereby opening and closing the waste input port 7.

[0024] As shown in Figure 2, a retaining member 90 having a substantially L-shaped portion that protrudes downward is attached to the lower end of the opening / closing door 8, covering almost the entire lower end of the opening / closing door 8. When the opening / closing door 8 is closed, the substantially L-shaped portion of the retaining member 90 is positioned so as to face the rear-side corner of the tip (upper end) of the upright refuse guide plate 80 with a small gap in between (see Figure 6). When the refuse guide plate 80 rotates towards the rear of the vehicle, the tip of the refuse guide plate 80 comes into contact with the retaining member 90. As a result, when the opening / closing door 8 is closed, the retaining member 90 restricts the rotation of the refuse guide plate 80 toward the rear of the vehicle, holding the refuse guide plate 80 in an upright position.

[0025] Various operating switches are provided in the front control panel 28 inside the driver's cab 3 of the refuse collection vehicle 1 and in the rear control panel 27 of the refuse input box 5. These operating switches include an emergency stop switch 36, a loading switch 31, a lowering switch 32, an upward switch 33, and a reverse switch 34 for the refuse loading device 6. An emergency stop plate switch 50 is also provided in the refuse input box 5. Furthermore, the rear control panel 27 is equipped with opening and closing switches 37 and 38 for the opening and closing doors 8.

[0026] As shown in Figure 3, above the refuse loading device 6 in the refuse input box 5, a crossbar 10 is provided connecting the left and right side walls 9 of the refuse input box 5. The crossbar 10 is made of, for example, a steel pipe with a certain thickness to maintain rigidity, but it may also be made of steel bars.

[0027] As shown in the simplified hydraulic circuit diagram in Figure 4, this hydraulic circuit consists of a hydraulic pump P, an oil reservoir T, an electromagnetic control valve V1 that controls the extension and retraction of a lifting cylinder 23, an electromagnetic control valve V2 that controls the extension and retraction of a swinging cylinder 25, and the like. The hydraulic pump P receives the driving force of a vehicle engine (not shown) via a PTO (Power Take-Off). The electromagnetic control valves V1 and V2 consist of, for example, 6-port, 3-position electromagnetic directional control valves. Electromagnetic control valve V1 has solenoids SOLa and SOLb, and electromagnetic control valve V2 has solenoids SOLc and SOLd. Electromagnetic control valves V1 and V2 switch to the upper or lower position only when their respective solenoids are energized, and return to the neutral position when they are not energized.

[0028] Next, the retaining member 90 installed on the opening / closing door 8 in the garbage collection vehicle 1 with the above configuration will be described with reference to Figures 5 to 12. Figure 5 shows the opening / closing door 8 and the retaining member 90 of the garbage collection vehicle 1 as seen from the back side (the inside side of the garbage input port 7). Figure 6 is a cross-sectional view of Figure 5 from X1-X1, showing the state when the retaining member 90 is not rotated relative to the opening / closing door 8. Figure 7 shows the state when the retaining member 90 is rotated forward relative to the opening / closing door 8 from the state in Figure 6. Figure 8 is a cross-sectional view of Figure 5 from X2-X2, showing the state when the retaining member 90 is not rotated relative to the opening / closing door 8. Figure 9 shows the state when the retaining member 90 is rotated forward relative to the opening / closing door 8 from the state in Figure 8. Figure 10 is a perspective view of the cross-sectional view of Figure 5 from X3-X3, showing the state when the retaining member 90 is not rotated relative to the opening / closing door 8. Figure 11 shows the state when the retaining member 90 has rotated forward relative to the opening / closing door 8, compared to the state in Figure 10. Figure 12 is a perspective view showing the opening / closing door 8 and the retaining member 90 as seen from the X4 direction in Figure 10.

[0029] As described above, the retaining member 90 is provided so as to protrude downward from the lower end of the opening / closing door 8. The retaining member 90 is rotatably mounted on the opening / closing door 8 around the pivot axis 95. Figures 6, 8, and 10 show the state when the retaining member 90 is not rotated relative to the opening / closing door 8, while Figures 7, 9, and 11 show the state when the retaining member 90 is rotated forward relative to the opening / closing door 8.

[0030] The retaining member 90 has a rotating portion 91 that extends in the vehicle width direction, and the rotating portion 91 is formed by bending a plate-shaped member in a side view. Two substantially cylindrical restricting portions 92 made of an elastic material such as rubber are attached to the rotating portion 91 in the vehicle width direction. As shown in Figure 6, the restricting portions 92 are located behind the waste guide plate 80 when the opening / closing door 8 is closed, and restrict the rotation of the waste guide plate 80 toward the rear of the vehicle. In other words, the restricting portions 92 hold the waste guide plate 80 in a substantially vertical upright position and prevent it from moving to a substantially horizontal unfolded position.

[0031] As shown in Figure 5, the rotating part 91 is rotatably supported on the opening / closing door 8 at two locations in the vehicle width direction. Plate-shaped fixing members 81 are attached to the opening / closing door 8 at two locations in the vehicle width direction, and a cam member 96, which is integrally provided with the rotating part 91, is rotatably mounted on the fixing members 81 around a pivot axis 95.

[0032] Specifically, as shown in Figure 6, the fixing member 81 is formed in a roughly L-shape when viewed from the side and is positioned to penetrate the inside and outside (front and back) of the opening / closing door 8. The fixing member 81 is inserted into a slit (opening) 83 formed in the opening / closing door 8 and is fixed to the opening / closing door 8 by welding or the like. As shown in Figure 8, the cam member 96 is formed in a roughly L-shape when viewed from the side and is positioned to penetrate the inside and outside (front and back) of the opening / closing door 8. The cam member 96 is inserted into a slit (opening) 83 formed in the opening / closing door 8 and is connected to the fixing member 81 via a pivot shaft 95 provided at the rear end of the cam member 96. Note that in Figures 6 to 12, the pin or the like that serving as the pivot shaft 95 is not shown, but the opening into which the pin or the like is inserted is shown.

[0033] The cam member 96 is not fixed to the opening / closing door 8, but is rotatable around the pivot axis 95. As shown in Figure 12, the vertical length L2 of the slit 83 into which the cam member 96 is inserted is greater than the vertical width L1 of the cam member 96, and a gap is formed between the cam member 96 and the slit 83. This gap allows the cam member 96 to rotate around the pivot axis 95. As shown in Figures 6, 8, and 10, when the retaining member 90 is not rotated relative to the opening / closing door 8, as shown in Figure 12, a gap is provided above the cam member 96, while no gap is provided below the cam member 96. Therefore, in the states shown in Figures 6, 8, and 10, the retaining member 90 can only rotate toward the front of the vehicle relative to the opening / closing door 8, and rotation toward the rear of the vehicle is restricted. Also, in the states shown in Figures 7, 9, and 11, the cam member 96 is in contact with the upper edge of the slit 83, preventing the retaining member 90 from rotating any further toward the front of the vehicle relative to the opening / closing door 8. In this case, a gap is created below the cam member 96, allowing the retaining member 90 to rotate toward the rear of the vehicle.

[0034] The rotating part 91 is integrally provided with a contact detection unit 93 that detects when an object comes into contact with the retaining member 90. The contact detection unit 93 detects contact with an object triggered by the rotation of the retaining member 90, and includes a connecting part 94 connected to the rotating part 91, the aforementioned rotating shaft 95 located behind the connecting part 94, the aforementioned cam member 96 that rotates around the rotating shaft 95 by the rotation of the rotating part 91 transmitted from the connecting part 94, and a detection sensor 82 that detects the rotation of the cam member 96.

[0035] As shown in Figures 8 and 10, a rotating part 91 is fixed to the L-shaped bent lower end of the cam member 96 by welding or the like, and a connecting part 94 is formed. In detail, the lower end of the opening / closing door 8 is bent approximately horizontally, and openings 84 are formed at two locations in the vehicle width direction of the bent portion. The horizontal portion of the rotating part 91 is inserted into the openings 84, and the horizontal portion of the rotating part 91 and the lower end of the cam member 96 are fixed by welding or the like. Note that the horizontal portion of the rotating part 91 is provided only at the two locations in the vehicle width direction corresponding to the openings 84.

[0036] A detection sensor 82 is mounted on the inner surface of the opening / closing door 8. A non-contact proximity sensor is used as the detection sensor 82. A projection 97 extending diagonally upward is integrally attached to the cam member 96, and the tip of the projection 97 is detected by the detection sensor 82. The retaining member 90 has a rotating part 91 and a cam member 96 integrally connected by a connecting part 94, and in addition, a restricting part 92 and a projection 97 are integrally provided. In the states shown in Figures 6, 8, and 10, no object is in contact with the retaining member 90, and the rotating part 91 and cam member 96 do not rotate relative to the opening / closing door 8, so the projection 97 is not detected by the detection sensor 82. In contrast, when an object such as a hand comes into contact with the retaining member 90, the rotating part 91 and the cam member 96 rotate towards the front of the vehicle around the pivot axis 95. As shown in Figures 7, 9, and 11, when the projection 97 is positioned on the detection sensor 82, the projection 97 is detected by the detection sensor 82. Note that the detection sensor 82 and the projection 97 are provided only on one side in the vehicle width direction (the right side in Figure 5), and not on the other side in the vehicle width direction (the left side in Figure 5).

[0037] In this embodiment, the retaining member 90 is provided so as to protrude from the lower end of the opening / closing door 8. The retaining member 90 has a restricting portion 92 that restricts the movement of the waste guide plate 80 from its upright position toward the rear of the vehicle when the opening / closing door 8 is closed, and a rotating portion 91 that can rotate toward the front of the vehicle when it comes into contact with an object. According to this embodiment, when a worker's hand or the like comes into contact with the rotating portion 91, the retaining member 90 rotates, so that the retaining member 90 and the waste guide plate 80 do not become misaligned, and even if a hand or the like gets caught, shear force is less likely to act, thus preventing injury. As a result, the retaining member 90 prevents the waste guide plate 80 from rotating, allowing workers to close the opening / closing door 8 with peace of mind.

[0038] Furthermore, the restricting part 92 is located behind the vehicle relative to the upright waste guide plate 80 when the opening / closing door 8 is closed, and as shown in Figure 12, there is no gap between the cam member 96 and the slit 83 below it. Therefore, the rotating part 91 is restricted from rotating towards the rear of the vehicle from the position where it is not in contact with an object. This prevents injuries without impairing the function of the retaining member 90 in holding the waste guide plate 80 in an upright position.

[0039] As described above, the opening and closing door 8 has an actuator such as an electric motor that opens and closes the door, and a control device that controls the actuator, and also has a contact detection unit 93 that detects when an object comes into contact with the retaining member 90. The control device has a stop unit that stops the opening and closing operation of the opening and closing door 8 by the actuator based on the detection result of the contact detection unit 93, and the contact detection unit 93 is configured to detect contact with an object triggered by the rotation of the rotating part 91 of the retaining member 90. In this way, by detecting the rotation of the rotating part 91 of the retaining member 90 with the contact detection unit 93 and stopping the opening and closing operation of the opening and closing door 8, the opening and closing door 8 can be safely stopped before pressure is applied to the worker's hand or other body part. The opening and closing door 8 may be stopped immediately after detecting the rotation of the rotating part 91, or the opening and closing door 8 may be decelerated after detecting the rotation of the rotating part 91 before being stopped, or after detecting the rotation of the rotating part 91, the opening and closing door 8 may be moved in the opening direction once to resolve the situation where the worker's hand or other body part is caught before being stopped.

[0040] Furthermore, the contact detection unit 93 includes a connecting part 94 that connects to the rotating part 91, a rotating shaft 95 located behind the connecting part 94, a cam member 96 that rotates around the rotating shaft 95 by the rotation of the rotating part 91 transmitted from the connecting part 94, and a detection sensor 82 that detects the rotation of the cam member 96. The rotating shaft 95 is the rotation center of the rotating part 91 of the retaining member 90 and is located behind the rotating part 91 of the retaining member 90 in a side view. By sharing the rotating shaft 95 between the rotating part 91 and the contact detection unit 93 in this way, the number of parts can be reduced and space can be saved. In addition, by positioning the rotating shaft 95 on the rearward side of the vehicle than the rotating part 91 of the retaining member 90, the rotating part 91 of the retaining member 90 can be reliably rotated toward the front of the vehicle. Furthermore, the center of gravity of the retaining member 90, which integrates the rotating part 91 and the cam member 96, is located on the front side of the vehicle relative to the slit 83 when no external force is acting on it. Therefore, compared to a case where the center of gravity is on the rear side of the vehicle relative to the slit 83, the retaining member 90 has greater stability against rattling and minor contact caused by vibrations during driving, improving the durability of the retaining member 90 and preventing over-detection by the detection sensor 82 described later.

[0041] Furthermore, the cam member 96 has a projection 97 that extends toward the detection sensor 82, and the detection sensor 82 and projection 97 are located on the inside of the opening / closing door 8. As shown in Figure 12, the rear end of the fixing member 81 and the rear end of the cam member 96 protrude from the slit 83 and are located on the outside of the opening / closing door 8, but the detection sensor 82 and projection 97 are located on the inside of the opening / closing door 8. This prevents the detection sensor 82 and the detection projection 97 from being exposed to the outside, resulting in a highly durable structure.

[0042] The embodiments disclosed herein are illustrative in all respects and are not intended to be restrictive. The technical scope of the present invention is not construed solely by the embodiments described above, but is defined by the claims. Furthermore, the technical scope of the present invention includes all modifications within the meaning and scope of equivalence to the claims.

[0043] The shapes, sizes, and positions of the rotating part 91, restricting part 92, cam member 96, and projection 97 described above are examples and can be changed in various ways. In addition, in the above embodiment, the detection sensor 82 is a non-contact type proximity sensor, but a contact type sensor may also be used. In addition, in the above embodiment, the projection 97 may be omitted, and the detection sensor may be provided above the cam member 96 to directly detect the rotation of the cam member 96. In addition, in the above embodiment, an angle sensor may be provided on the rotating shaft 95 to directly detect the rotation of the cam member 96. In addition, in the above embodiment, the rotation of the retaining member 90 is restricted by the slit 83, but the rotation of the retaining member 90 may be restricted by other means.

[0044] In the above embodiment, an electric motor was used as the actuator for the opening / closing door 8, but it is not limited to this, and a hydraulic cylinder or the like may also be used. Furthermore, the rear operating section 27 is provided with opening / closing switches 37 and 38 for the opening / closing door 8, but it is not limited to this, and the opening / closing switches 37 and 38 can be placed on the gripping part of the opening / closing door 8 for intuitive operation, or the opening switch can be placed on the gripping part of the opening / closing door 8 and the closing switch can be placed on the rear operating section 27, thus separating their installation locations. Moreover, when the opening / closing switches 37 and 38 of the opening / closing door 8 are operated, the open and closed states may be switched with a single operation, or the opening / closing door may only operate while the opening / closing switches 37 and 38 are being operated. [Explanation of Symbols]

[0045] 1. Garbage collection vehicle 2 chassis 4. Refuse container 5 Garbage disposal box 6. Refuse loading device 7 Garbage inlet 8 Opening and closing doors 80. Dust and Litter Information Board 82 detection sensors 90 Retaining member 91 Rotating part 92 Regulatory Department 95 Rotary shaft 97. Protrusion

Claims

1. A garbage collection vehicle comprising: a garbage container on the chassis; a garbage input box connected to the rear end of the garbage container and having a garbage input opening at the rear; an opening / closing door for opening and closing the garbage input opening; a garbage guide plate rotatable together with the opening / closing door to close the garbage input opening; and a retaining member installed on the opening / closing door and provided to protrude from the lower end of the opening / closing door, The refuse collection vehicle is characterized in that the retaining member has a restricting part that restricts the movement of the refuse guide plate from the upright position toward the rear of the vehicle when the opening and closing door is closed, and a rotating part that can rotate toward the front of the vehicle when it comes into contact with an object.

2. In the refuse collection vehicle according to claim 1, The aforementioned regulatory section is located behind the vehicle, relative to the upright garbage guide plate when the opening and closing door is closed. The aforementioned rotating part is characterized in that it is restricted from rotating toward the rear of the vehicle from a position where it is not in contact with an object.

3. In the refuse collection vehicle according to claim 1 or 2, The system includes an actuator for opening and closing the aforementioned door, a control device for controlling the actuator, and a contact detection unit for detecting when an object has come into contact with the retaining member. The control device has a stop unit that stops the opening and closing operation of the opening and closing door by the actuator based on the detection result of the contact detection unit. The refuse collection vehicle is characterized in that the contact detection unit is configured to detect contact with an object triggered by the rotation of the pressing member.

4. In the refuse collection vehicle according to claim 3, The contact detection unit includes a connecting part that connects to the rotating part, A pivot shaft located rearward of the vehicle from the aforementioned connection point, A cam member that rotates around the pivot axis by the rotation of the pivot part transmitted from the connecting part, It has a detection sensor that detects the rotation of the cam member, The aforementioned pivot shaft is the pivot center of the pivot part and is located behind the pivot part in a side view of the vehicle, characterized in that it is a refuse collection vehicle.

5. In the refuse collection vehicle according to claim 4, The cam member has a projection that extends toward the detection sensor. A garbage collection vehicle characterized in that the detection sensor and the projection are located on the inside side of the opening and closing door.

Images