Garbage collector

Abstract

To provide a garbage collector that prevents a load from being applied to a fixed position of a shield plate when the shield plate is caught in a turntable.SOLUTION: A garbage loading device 8 comprises a turntable 9, and a push-in plate 10. There is provided a protrusion 25 protruding downward at a lower end portion of the push-in plate 10. The protrusion 25 comprises a protrusion back face 25a directed backward. The protrusion back face 25a is approximately linear as viewed from a lateral side. A flexible shield plate 28 is fixed on the protrusion back face 25a by a fixed part 30. When the push-in plate 10 is located at a front position, the fixed part 30 is located above tip portions 9b of the turntable 9 when the protrusion back face 25a on which the shield plate 28 is fixed, and the tip portions 9b of the turntable 9 come closest to each other.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a refuse collection vehicle. [Background technology]

[0002] Conventionally, there has been known a garbage collection vehicle equipped with a garbage storage box mounted on a vehicle chassis, a garbage drop box connected to the rear of the garbage storage box, and a garbage loading device provided inside the garbage drop box. For example, Patent Document 1 describes a garbage loading device equipped with a rotating plate and a pushing plate. The rotating plate rotates around an axis provided so as to extend in the vehicle width direction. The pushing plate can swing in the front-rear direction. When the rotating plate rotates, the garbage put into the garbage drop box is scooped up forward. The garbage scooped up by the rotating plate is pushed into the garbage storage box by the pushing plate. Through the above operations, the garbage put into the garbage drop box is loaded into the garbage storage box.

[0003] When the push plate pushes the trash into the trash box, the wastewater contained in the trash may be pushed out. The wastewater may scatter outside the trash collection vehicle through the gap between the push plate and the rotating plate, or the gap between the push plate and the inner wall of the trash box. To prevent the wastewater from scattering, a shielding plate made of a flexible material is provided at the lower end of the push plate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Publication number 04-002882 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the loading operation is performed when the dust storage box is nearly full, the dust pushed into the dust storage box by the push plate receives a repulsive force from the dust already loaded in the dust storage box. This can cause the dust to overflow from the dust storage box. At this time, the shielding plate may be pushed backward by the dust and bend. If the rotating plate rotates in this state, the shielding plate may be caught in the rotation of the rotating plate. In addition, the rotating plate may rotate while catching the dust overflowing from the dust storage box, and the shielding plate may be indirectly caught in the rotating plate. As a result, a load is applied to the fixed position of the shielding plate, and the shielding plate may be damaged.

[0006] The present invention has been made in consideration of the above-mentioned points, and its object is to provide a garbage collection vehicle in which a load is not easily applied to the fixed position of the shielding plate when the shielding plate is caught in the rotating plate. [Means for solving the problem]

[0007] The garbage collection vehicle according to the present invention comprises a chassis, a garbage storage box mounted on the chassis and storing garbage, a garbage drop box connected to the rear of the garbage storage box and having an inlet opening toward the rear, and a garbage loading device provided inside the garbage drop box and sending garbage dropped into the garbage drop box into the garbage storage box. The garbage loading device comprises a rotating plate having an axle portion rotatably supported on the garbage drop box and a tip portion rotating about the axle portion, which scoops up the garbage dropped into the garbage drop box forward, and a push plate arranged above the rotating plate, swingable back and forth between a rear position and a front position, which pushes the garbage scooped up by the rotating plate into the garbage storage box. The push plate has a rear surface facing rearward, a convex rear surface constituting a part of the rear surface, a convex portion protruding downward and constituting a lower end of the push plate, a flexible shielding plate, and a fixing portion for fixing the shielding plate to the convex rear surface. The refuse collection vehicle is characterized in that, when the push plate is in the forward position, the fixing portion is located above the position of the tip of the rotating plate when the tip of the rotating plate is closest to the convex rear surface to which the shielding plate is fixed.

[0008] When the shielding plate is caught in the rotating plate, the shielding plate receives a force from the rotating plate, and a load is applied to the fixed portion that fixes the shielding plate. The magnitude of the load applied to the fixed portion varies depending on the distance between the rear surface of the convex portion to which the shielding plate is fixed and the tip of the rotating plate, and the smaller the distance, the greater the load. According to the above-mentioned garbage collection vehicle, the fixed portion is located above the position of the tip of the rotating plate when the rear surface of the convex portion to which the shielding plate is fixed and the tip of the rotating plate are closest to each other. In addition, as the tip of the rotating plate approaches the fixed portion, the distance between the rear surface of the convex portion to which the shielding plate is fixed and the tip of the rotating plate increases. In other words, the rotating plate rotates in a direction away from the rear surface of the convex portion to which the shielding plate is fixed. Therefore, even if the rotating plate rotates while entangling the shielding plate, the fixed portion of the shielding plate is less likely to be loaded, and damage to the shielding plate can be suppressed.

[0009] The refuse collection vehicle may include a convex portion reinforcing member that forms a lower portion of the convex portion and has a generally U-shaped convex portion that opens upward.

[0010] In order for the pusher plate to push the trash into the trash storage box, the pusher plate needs to have a certain length and strength. By providing a U-shaped convex reinforcing member at the lower end of the pusher plate, the length and strength of the pusher plate required to push the trash can be ensured at the same time. In addition, since the convex reinforcing member is a hollow member, the pusher plate can be made lighter than when the pusher plate is made of a solid member including the convex portion.

[0011] The refuse collection vehicle may include at least one or more convex reinforcing members different from the convex reinforcing member.

[0012] By providing a plurality of protruding portion reinforcing members on the pressing plate, the strength of the pressing plate can be further increased.

[0013] The refuse collection vehicle may include a main back surface forming member that forms a main back surface located above the convex portion back surface, and the convex portion back surface may be recessed forward of the main back surface.

[0014] As a result, the shielding plate fixed to the rear surface of the protruding portion is also recessed forward with respect to the main rear surface, which makes it difficult for the shielding plate to be caught in the rotation of the rotating plate, thereby suppressing damage to the shielding plate.

[0015] The garbage collection vehicle is provided with a main back surface component member that constitutes a main back surface located above the convex back surface, the convex back surface being approximately straight when viewed from the side, the main back surface being approximately straight when viewed from the side, and when the push plate is in the forward position, the angle that the convex back surface makes with the vertical direction when viewed from the side may be smaller than the angle that the main back surface makes with the vertical direction.

[0016] As a result, the angle that the shielding plate fixed to the rear surface of the protrusion makes with the vertical direction is smaller than the angle that the main rear surface component makes with the vertical direction. In other words, the shielding plate is closer to vertical than the main rear surface component. A gap can be secured between the tip of the rotating plate and the fixed portion of the shielding plate, and the load on the shielding plate can be reduced when the rotating plate rotates while rolling the shielding plate around it.

[0017] The garbage collection vehicle is provided with flexible side shielding plates provided on both sides of the back surface of the push-in plate, and the side shielding plates are positioned higher than the outer portion of the shielding plate in the vehicle width direction, and the outer end of the shielding plate in the vehicle width direction may be located further outward in the vehicle width direction than the inner end of the side shielding plate in the vehicle width direction.

[0018] With the above-described configuration, the side shielding plates are less likely to be caught in the rotation of the rotating plate than the shielding plates, which reduces damage to the side shielding plates and reduces the frequency of replacement of the side shielding plates. Effect of the Invention

[0019] According to the present invention, it is possible to provide a garbage collection vehicle equipped with a shielding plate to prevent the scattering of wastewater contained in garbage, in which the fixed position of the shielding plate is not easily subjected to load when the shielding plate is caught in the rotation of the rotating plate. [Brief description of the drawings]

[0020] [Figure 1]FIG. 1 is a side view of a refuse collection vehicle according to an embodiment. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a diagram showing a hydraulic circuit. [Figure 4] FIG. 13 is a rear view of the push-in plate when the shielding plate and side shielding plate are not attached. [Diagram 5] 5 is a view taken along the arrows A-A in FIG. 4. [Figure 6] 5 is a cross-sectional view seen from the FF direction in FIG. 4. [Figure 7] 13 is a rear view of the push-in plate when the shielding plate and side shielding plate are attached. FIG. [Figure 8] This is a side view of the garbage loading device when the push plate is in the forward position and the fixed part of the shielding plate and the tip of the rotating plate are closest to each other. [Figure 9] 9 is an enlarged view of the lower end of the pressing plate and the tip of the rotating plate in FIG. 8. [Figure 10] FIG. 2 is an operation cycle diagram of the garbage loading device. [Figure 11] 1 is a side view of the garbage loading device when the shielding plate is caught in the rotation of the rotating plate. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The following describes the garbage collection vehicle according to this embodiment with reference to the drawings.

[0022] 1 is a side view of a refuse collection vehicle 1 in this embodiment. The refuse collection vehicle 1 includes a chassis 2, a refuse collection box 3 mounted on the chassis 2, and a refuse insertion box 4 connected to the rear of the refuse collection box 3.

[0023] A space for storing dust 70 is provided inside the dust collection box 3. As shown in Fig. 2, an opening 3a is formed at the rear of the dust collection box 3. The opening 3a is connected to the dust insertion box 4. Dust 70 is stored in the dust collection box 3 from the dust insertion box 4 through the opening 3a.

[0024] Above the opening 3a of the trash collection box 3, the trash drop box 4 is supported by a support pin 5. An insertion opening 7 is formed at the rear of the trash drop box 4. Rubbish 70 is inserted into the trash drop box 4 from the insertion opening 7. A bottom wall 6 is provided inside the trash drop box 4, where the rubbish 70 temporarily accumulates. By operating a rubbish loading device 8, which will be described later, the rubbish 70 is scraped up from the bottom wall 6 and sent into the rubbish collection box 3.

[0025] As shown in Fig. 2, a garbage loading device 8 is provided inside the garbage dump box 4. The garbage loading device 8 includes a rotating plate 9 and a pushing plate 10. The rotating plate 9 pushes forward the garbage 70 that has been dumped into the garbage dump box 4 and accumulated on the bottom wall 6. Next, the pushing plate 10 pushes the garbage 70 that has been dumped by the rotating plate 9 into the garbage storage box 3. By the above operation, the garbage 70 dumped into the garbage dump box 4 is sent into the garbage storage box 3.

[0026] The rotating plate 9 is provided across the entire width of the trash bin 4. The rotating plate 9 has a shaft 9a which is the center of rotation, and a tip 9b which scoops up the trash 70. A reducer 41a is connected to the shaft 9a of the rotating plate 9. A hydraulic motor 41 (see FIG. 3) is connected to the reducer 41a. The rotating plate 9 is driven by the hydraulic motor 41 and rotates around the shaft 9a. Here, the rotating plate 9 is configured to rotate in the clockwise direction in FIG. 2.

[0027] The refuse collection vehicle 1 is equipped with a rotation limit switch 42 that detects the position of the rotating plate 9. The rotation limit switch 42 is configured to detect a position just before the position where the rotating plate 9 is approximately horizontal in front of the shaft portion 9a. In the following description, the approximately horizontal position is referred to as the rotation stop position. The rotation limit switch 42 is attached to the inner wall of the refuse bin 4. A metal plate 43 is fixed to the shaft portion 9a of the rotating plate 9. The rotation limit switch 42 is configured to send a detection signal to a control device 48 (see FIG. 3) when the metal plate 43 approaches.

[0028] The push plate 10 is provided over the entire width of the trash bin 4. A swing shaft 18 extending in the width direction of the trash bin 4 is inserted through the push plate 10. The push plate 10 swings back and forth around the swing shaft 18 between a front position shown by the imaginary line in FIG. 2 and a rear position shown by the solid line in FIG. 2. When the push plate 10 moves from the rear position to the front position, the trash 70 scooped up by the rotating plate 9 is pushed into the trash storage box 3. The trash loading device 8 is provided with a push cylinder 44 as a drive means for the push plate 10. The push cylinder 44 has a rod 44a. The rod 44a and the push plate 10 are connected. When the push plate 10 is in the front position, the push cylinder 44 is extended. On the other hand, when the push plate 10 is in the rear position, the push cylinder 44 is contracted.

[0029] The refuse collection vehicle 1 is equipped with a push-in limit switch 45 that detects the extension of the push-in cylinder 44 just before the maximum extension position. The push-in limit switch 45 is attached to the inner wall of the refuse bin 4. A metal plate 46 is fixed to the swing shaft 18. The push-in limit switch 45 is configured to send a detection signal to a control device 48 (see FIG. 3) when the metal plate 46 approaches.

[0030] The refuse collection vehicle 1 is provided with a hydraulic circuit 50 for operating the hydraulic motor 41 and the pushing cylinder 44 as shown in FIG. 3. A known hydraulic circuit 50 can be used. The refuse collection vehicle 1 is provided with a hydraulic pump 51 capable of changing the discharge amount. Furthermore, the refuse collection vehicle 1 is provided with a first electromagnetic changeover valve 52 for switching the operation of the pushing cylinder 44 and a second electromagnetic changeover valve 53 for switching the operation of the hydraulic motor 41. The configurations of the first electromagnetic changeover valve 52 and the second electromagnetic changeover valve 53 are not particularly limited, but here, both are configured as three-position electromagnetic pilot six-port changeover valves. The first electromagnetic changeover valve 52 is connected to the pushing cylinder 44 via a hydraulic pipe 54. The second electromagnetic changeover valve 53 is connected to the hydraulic motor 41 via a hydraulic pipe 55. The first electromagnetic changeover valve 52 is connected to the hydraulic pump 51 via a hydraulic pipe 56. The second electromagnetic changeover valve 53 is connected to the first electromagnetic changeover valve 52 via a hydraulic pipe 57. The control device 48 controls the operation of the garbage loading device 8 by controlling the hydraulic circuit 50 based on the detection signals received from the push limit switch 45 and the rotation limit switch 42.

[0031] The configuration of the push plate 10 in this embodiment will be described below. In the following description, the front side refers to the surface facing the front of the garbage collection vehicle 1. The back side refers to the surface facing the rear of the garbage collection vehicle 1. FIG. 4 is a rear view of the push plate, FIG. 5 is a view taken along the line AA in FIG. 4, and FIG. 6 is a cross-sectional view of FIG. 4. The push plate 10 includes a front plate 11, a support portion 12, a main back side component 20, and a lower reinforcing member 24. The support portions 12 are provided on both the left and right sides of the push plate 10, and support the front plate 11, the main back side component 20, and the lower reinforcing member 24. The front plate 11 is a member for forming the front side of the push plate 10, and is provided inside the garbage input box 4 over the entire width of the vehicle. The main back side component 20 is a member for forming a part of the back side of the push plate 10, and is provided inside the garbage input box 4 over the entire width of the vehicle. In the following description, the back surface of the pressing plate 10 formed by the main back surface component 20 is referred to as the main back surface 20a. The main back surface component 20 includes a support portion connecting plate 21, an upper reinforcing member 22, a reinforcing channel member 19, and a rear plate 23. The support portion connecting plate 21 forms the back surface of the left and right support portions 12 of the pressing plate 10. The upper reinforcing member 22 and the rear plate 23 are provided between the left and right support portions 12. The reinforcing channel member 19 and the rear plate 23 are provided below the upper reinforcing member 22. As shown in FIG. 5 and FIG. 6, the main back surface 20a formed by the main back surface component 20 is substantially linear when viewed from the side. The lower reinforcing member 24 is provided below the rear plate 23 between the left and right support portions 12. The lower reinforcing member 24 forms a part of the back surface of the pressing plate 10 located below the main back surface 20a.

[0032] As shown in FIG. 4, the support portion 12 includes a first support plate 13 and a second support plate 14. As shown in FIG. 5, the support portion 12 includes a support portion reinforcing member 15, a mounting hinge 16, and a boss portion 17. As shown in FIG. 4, the first support plate 13 and the second support plate 14 are arranged parallel to each other and spaced apart from each other in the vehicle width direction. The first support plate 13 is arranged outward in the vehicle width direction from the second support plate 14. A plurality of support portion reinforcing members 15 are provided between the first support plate 13 and the second support plate 14 to reinforce the support portion 12. The mounting hinge 16 is provided on the upper portion of the first support plate 13 and the upper portion of the second support plate 14. A rod 44a of a push-in cylinder 44 is connected to the mounting hinge 16 (see FIG. 2). The boss portion 17 is provided on the first support plate 13 and the second support plate 14. A swing shaft 18 is inserted into the boss portion 17 .

[0033] The front plate 11 is a member for pushing the trash 70 that has been scooped up by the rotating plate 9. The front plate 11 is fixed to the support parts 12 on both sides of the push-in plate 10, and is provided across the entire width of the vehicle. The front plate 11 has multiple bent parts, which makes it easier for the push-in plate 10 to push the trash.

[0034] As shown in FIG. 4, the support portion connecting plate 21 is connected to the first support plate 13 and the second support plate 14. The upper reinforcing member 22 and the rear plate 23 are provided between the left and right support portions 12. The upper reinforcing member 22 is a member for reinforcing the front plate 11. As shown in FIG. 6, the upper reinforcing member 22 is bent at two bending points 22a and 22b, has a substantially U-shape that opens forward, and is connected to the front plate 11 at two points. The portion of the upper reinforcing member 22 between the two bending points 22a and 22b constitutes a part of the main back surface 20a. As shown in FIG. 4, the reinforcing channel member 19 is provided between the upper reinforcing member 22 and the lower reinforcing member 24. The reinforcing channel member 19 is connected to the front plate 11 at its front portion. The back surface of the reinforcing channel member 19 constitutes a part of the main back surface 20a. The rear plate 23 is a member for preventing dust 70 from entering the gaps between the upper reinforcing member 22, the reinforcing channel member 19, and the lower reinforcing member 24. The rear plate 23 is connected to a portion between two bending points 22a, 22b of the upper reinforcing member 22. The rear plate 23 is also connected to the lower end and both side ends of the back surface of the reinforcing channel member 19.

[0035] As shown in FIG. 4, the lower reinforcing member 24 is provided at the lower part of the rear plate 23 between the left and right support parts 12. The lower reinforcing member 24 is a member for reinforcing the front plate 11. As shown in FIG. 6, the lower reinforcing member 24 is bent at two bending points and is connected to the front plate 11 at two points. The lower reinforcing member 24 is bent at a right angle at an upper bending point 24a located at the upper part of the two bending points, and is bent at an acute angle at a lower bending point 24b located at the lower part. The lower reinforcing member 24 is connected to the rear plate 23 at a portion between the upper bending point 24a and the lower bending point 24b. Of the lower reinforcing member 24, a portion 24c below the lower bending point 24b constitutes a part of the back surface of the pressing plate 10.

[0036] As shown in FIG. 6, the lower end of the pressing plate 10 is a convex portion 25 that protrudes downward. The convex portion 25 has a convex portion back surface 25a facing rearward. When viewed from the side, the convex portion back surface 25a is substantially linear. The convex portion 25 is provided at the lower portion of the lower reinforcing member 24 and is recessed forward with respect to the main back surface component member 20. In other words, the convex portion back surface 25a is recessed forward of the main back surface 20a. The convex portion 25 is connected to the lower portion of the lower reinforcing member 24, the lower portion of the front plate 11, and the lower portion of the support portion connecting plate 21. The convex portion back surface 25a constitutes a part of the back surface of the pressing plate 10. In addition, the lower surface of the convex portion 25 constitutes the lower surface of the pressing plate 10.

[0037] As shown in FIG. 6, the protrusion 25 has a protrusion reinforcing member that reinforces the pressing plate 10. The protrusion reinforcing member constitutes the lower end of the protrusion 25. In this embodiment, a first protrusion reinforcing member 26 and a second protrusion reinforcing member 27 are provided as the protrusion reinforcing member. The first protrusion reinforcing member 26 has a substantially U-shaped shape that opens upward. One end of the first protrusion reinforcing member 26 is connected to the front surface of the front plate 11. Therefore, a part of the first protrusion reinforcing member 26 constitutes a part of the front surface of the pressing plate 10. A second protrusion reinforcing member 27 is provided at the rear of the first protrusion reinforcing member 26. The second protrusion reinforcing member 27 reinforces the first protrusion reinforcing member 26.

[0038] When the push plate 10 pushes the garbage 70 into the garbage storage box 3, dirty water may be pushed out of the garbage 70. In order to prevent the dirty water from scattering outside the garbage collection vehicle 1 through the gap between the push plate 10 and the rotating plate 9, as shown in FIG. 7, a shielding plate 28 made of a flexible material is provided at the lower end of the push plate 10. The material of the shielding plate 28 is not particularly limited, but rubber, for example, can be preferably used. The shielding plate 28 is provided over the entire width of the vehicle. As shown in FIG. 8, the shielding plate 28 is fixed to the convex back surface 25a by the fixing part 30. In this embodiment, the fixing part 30 includes a bolt 30a and a nut 30b welded to the back side of the convex back surface 25a. FIG. 8 shows the garbage loading device 8 when the tip 9b of the rotating plate 9 and the fixing part 30 are closest to each other. 9 shows an enlarged view of the tip 9b of the rotating plate 9 and the protruding portion 25 in FIG. 8. The arc shown by the two-dot chain line in FIG. 9 represents the rotation trajectory of the tip 9b of the rotating plate 9. In addition, FIG. 8 and FIG. 9 show the shielding plate 28 when it is not rolled up in the rotating plate 9. As can be seen from FIG. 9, the position of the fixing portion 30 is higher than the position of the tip 9b of the rotating plate 9 when the back surface 25a of the protruding portion to which the shielding plate 28 is fixed and the tip 9b of the rotating plate 9 are closest to each other. The symbol Lmin represents the distance between the back surface 25a of the protruding portion to which the shielding plate 28 is fixed and the tip 9b of the rotating plate 9 when the back surface 25a of the protruding portion to which the shielding plate 28 is fixed and the tip 9b of the rotating plate 9 are closest to each other. As the rotating plate 9 rotates further from this closest position and the tip 9b of the rotating plate 9 approaches the fixed portion 30, the distance L between the protruding portion back surface 25a to which the shielding plate 28 is fixed and the tip 9b of the rotating plate 9 becomes larger.

[0039] As shown in FIG. 7, a side shielding plate 29 made of a flexible material is provided on the back surface of the support portion 12. As with the shielding plate 28, the material of the side shielding plate 29 is not particularly limited, but for example, rubber or the like can be suitably used. The side shielding plate 29 prevents dirty water from scattering between the side of the push-in plate 10 and the inner wall of the trash bin 4. In this embodiment, the left and right sides of the shielding plate 28 are provided with an extension portion 28e extending outward in the vehicle width direction. The side shielding plate 29 is disposed above the extension portion 28e of the shielding plate 28 and is aligned vertically with the extension portion 28e of the shielding plate 28. With respect to the vehicle width direction, the side shielding plate 29 and at least a part of the extension portion 28e of the shielding plate 28 are disposed at the same position. In FIG. 7, the straight line L1 represents the position of the inner end of the side shielding plate 29 in the vehicle width direction, and the straight line L2 represents the position of the outer end of the shielding plate 28 in the vehicle width direction. The side shielding plate 29 is positioned such that the inner end of the side shielding plate 29 is located more inward in the vehicle width direction than the outer end of the shielding plate 28. A part of the side shielding plate 29 and a part of the shielding plate 28 are aligned left and right. In the up-down direction, a part of the side shielding plate 29 and a part of the shielding plate 28 are positioned at the same position. Similar to the shielding plate 28, the fixing portion 31 of the side shielding plate 29 includes a bolt and a nut 31b welded to the back side of the back surface of the support portion connecting plate 21.

[0040] As described above, the back surface of the pressing plate 10 is composed of the main back surface component 20, the lower reinforcing member 24, and the protruding portion 25. The main back surface component 20 is a component that constitutes the main back surface 20a of the pressing plate 10. The main back surface component 20 includes the support portion connecting plate 21, the upper reinforcing member 22, the reinforcing channel member 19, and the rear plate 23. The support portion connecting plate 21 constitutes both sides of the back surface of the pressing plate 10. Of the back surface between the support portion connecting plates 21 on both sides of the pressing plate 10, the upper portion is composed of the upper reinforcing member 22, the central portion is composed of the reinforcing channel member 19 and the rear plate 23, and the lower portion is composed of the lower reinforcing member 24. The lower portion of the lower reinforcing member 24 is provided with a protruding portion 25 over the entire width direction of the vehicle, and the protruding portion back surface 25a constitutes the lower end portion of the back surface of the pressing plate 10. As shown in Fig. 9, when the pressing plate 10 is in the forward position, the angle that the convex rear surface 25a makes with the vertical direction is θ1. Also, when the pressing plate 10 is in the forward position, the angle that the main rear surface 20a makes with the vertical direction is θ2. As shown in Fig. 9, θ1<θ2. In other words, when the pressing plate 10 is in the forward position, the convex rear surface 25a is closer to vertical than the main rear surface 20a.

[0041] Next, the operation of the garbage loading device 8 when sending the garbage 70 put into the garbage input box 4 to the garbage storage box 3 will be described. FIG. 10 is a diagram showing the operation cycle of the garbage loading device 8 in this embodiment. The operation of the garbage loading device 8 operates as one cycle consisting of a retreat rotation process, a return process, a scraping rotation process, and a pushing process. The retreat rotation process is a process in which the rotating plate 9 is rotated from the rotation stop position when the pushing plate 10 is in the front position so that the rotating plate 9 does not interfere with the swinging operation of the pushing plate 10 from the front position to the rear position. During this retreat rotation process, the tip 9b of the rotating plate 9 and the back surface of the pushing plate 10 are closest to each other. The return process is a process for moving the pushing plate 10 from the front position to the rear position. The scraping rotation process is a process in which the rotating plate 9 is rotated to the rotation stop position to scrape up the garbage 70 put into the garbage input box 4. The pushing process is a process in which the pushing plate 10 is swung from the rear position to the front position, and the trash 70 placed on the rotating plate 9 stopped at the rotation stop position is pushed into the trash storage box 3. Here, the return process and a part of the scraping up rotation process are performed simultaneously.

[0042] In the retraction rotation stroke, the pushing cylinder 44 stops while remaining extended, and the hydraulic motor 41 rotates forward. In the return stroke, the hydraulic motor 41 rotates forward while the pushing cylinder 44 retracts. In the lifting rotation stroke, the hydraulic motor 41 rotates forward. In the pushing stroke, the hydraulic motor 41 stops, and the pushing cylinder 44 extends.

[0043] When the loading operation is performed when the trash container is nearly full, the trash pushed into the trash container by the push plate receives a repulsive force from the trash already loaded in the trash container. Therefore, the trash may overflow from the trash container. At this time, the trash 70 pushes the shielding plate 28 backward, and the shielding plate 28 may bend (see FIG. 11). If the rotating plate 9 rotates while the shielding plate 28 is bent, the shielding plate 28 may be caught in the rotation of the rotating plate 9. In addition, the rotating plate 9 may rotate while catching the trash 70 overflowing from the trash container 3, and may indirectly catch the shielding plate 28. FIG. 11 shows a schematic diagram of the rotating plate 9 when the shielding plate 28 is caught. The arc shown by the two-dot chain line in FIG. 11 shows the rotation trajectory of the tip 9b of the rotating plate 9. As described above, when the rotating plate 9 further rotates and the tip 9b approaches the fixed portion 30, the distance between the protruding rear surface 25a to which the shielding plate 28 is fixed and the tip 9b of the rotating plate 9 becomes wider (see FIG. 9). In other words, the rotating plate 9 rotates in a direction away from the protruding rear surface 25a to which the shielding plate 28 is fixed.

[0044] The garbage collection vehicle 1 in this embodiment is equipped with a garbage loading device 8 having a rotating plate 9 and a pushing plate 10. The lower end of the pushing plate 10 is a convex portion 25 that protrudes downward. The convex portion 25 has a convex portion back surface 25a facing rearward. A shielding plate 28 is fixed to the convex portion back surface 25a by a fixing portion 30. When the pushing plate 10 is in the forward position, the fixing portion 30 is located higher than the position of the tip portion 9b of the rotating plate 9 when the convex portion back surface 25a to which the shielding plate 28 is fixed and the tip portion 9b of the rotating plate 9 are closest to each other. Therefore, as the rotating plate 9 rotates further from this closest position and the tip portion 9b of the rotating plate 9 approaches the fixing portion 30, the distance between the convex portion back surface 25a to which the shielding plate 28 is fixed and the tip portion 9b of the rotating plate 9 becomes larger. That is, even if the shielding plate 28 is caught in the rotation of the rotating plate 9, the tip portion 9b of the rotating plate 9 rotates in a direction away from the convex rear surface 25a to which the shielding plate 28 is fixed. Therefore, the fixing portion 30 of the shielding plate 28 is not easily subjected to a load, and damage to the shielding plate 28 can be suppressed.

[0045] The protrusion 25 has a first protrusion reinforcing member 26 that is substantially U-shaped and opens upward. The first protrusion reinforcing member 26 reinforces the pusher plate 10. A part of the first protrusion reinforcing member 26 constitutes a part of the front surface of the pusher plate 10. In order for the pusher plate 10 to push the trash 70 into the trash storage box 3, the pusher plate 10 needs to have a certain length and a certain strength. By providing the first protrusion reinforcing member 26, the strength required to push the trash 70 can be secured, and at the same time, the length of the front surface of the pusher plate 10 can be extended to secure the length required to push the trash 70. Furthermore, since the first protrusion reinforcing member 26 is a hollow member, the pusher plate 10 can be made lighter than when the pusher plate 10, including the protrusion 25, is made of a solid member.

[0046] The protrusion 25 includes a second protrusion reinforcing member 27 separate from the first protrusion reinforcing member 26. By providing the second protrusion reinforcing member 27 on the pressing plate 10, the strength of the pressing plate 10 can be further increased.

[0047] The protrusion 25 is recessed forward with respect to the main back surface forming member 20 that constitutes the main back surface 20a of the pressing plate 10. In other words, the protrusion back surface 25a is recessed forward of the main back surface 20a. As a result, the shielding plate 28 fixed to the protrusion back surface 25a is also recessed forward with respect to the main back surface forming member 20. Therefore, the shielding plate 28 is less likely to be caught in the rotation of the rotating plate 9.

[0048] The angle θ1 that the convex rear surface 25a makes with the vertical direction when the pushing plate 10 is in the forward position is smaller than the angle θ2 that the main rear surface 20a makes with the vertical direction when the pushing plate 10 is in the forward position. As a result, the angle that the shielding plate 28 fixed to the convex rear surface 25a makes with the vertical direction is also smaller than the angle that the main rear surface component 20 that constitutes the main rear surface 20a makes with the vertical direction. A gap can be secured between the tip of the rotating plate and the fixed portion of the shielding plate, and the load on the shielding plate can be reduced when the rotating plate rotates while rolling the shielding plate around it.

[0049] A side shielding plate 29 is provided on the back surface of the support portion connecting plate 21. The lower portion of the side shielding plate 29, which is likely to come into contact with the rotating plate 9, is easily damaged, while the upper portion, which is unlikely to come into contact with the rotating plate 9, is unlikely to be damaged. However, in this embodiment, the side shielding plate 29 is aligned vertically with the extension portion 28e of the shielding plate 28, so that the lower portion of the side shielding plate 29 is unlikely to come into contact with the rotating plate 9. Therefore, damage to the lower portion of the side shielding plate 29 is suppressed, and the frequency of replacement of the side shielding plate 29 can be reduced.

[0050] Although one embodiment of the present invention has been described above, the embodiment is merely an example, and various other embodiments are possible.

[0051] In the above embodiment, the fixing portion 30 of the shielding plate 28 and the fixing portion 31 of the side shielding plate 29 are configured with bolts and nuts, but are not limited thereto. For example, the shielding plate 28 and the side shielding plate 29 may be fixed by a method such as riveting or adhesive.

[0052] In the above embodiment, the pressing plate 10 is provided with two protruding reinforcing members, but the number of protruding reinforcing members is not limited to this. Three or more protruding reinforcing members may be provided. [Explanation of symbols]

[0053] 1. Refuse collection truck 2 Chassis 3. Dustbin 4 Garbage disposal box 7 Inlet 8. Refuse loading device 9 Rotating Plate 9a Shaft 9b Tip 10 Push-in plate 20 Main rear component 20a Main back 25 Convex 25a Convex back 26 First protruding portion reinforcing member 27 Second protruding portion reinforcing member 28 Shield plate 29 Side shielding plate 30 Fixed part 70 Rubbish

Claims

1. The chassis and A dust collection box mounted on the chassis and configured to collect dust; A trash input box connected to a rear part of the trash storage box and having an input port opening toward the rear; A garbage loading device is provided inside the garbage input box and sends the garbage input into the garbage input box to the garbage storage box, The garbage loading device is A rotating plate having a shaft portion rotatably supported on the trash bin and a tip portion rotating around the shaft portion, and which scoops up the trash thrown into the trash bin forward; a pusher plate that is disposed above the rotating plate and can swing back and forth between a rear position and a front position, and that pushes the trash picked up by the rotating plate into the trash storage box; The pushing plate is The back facing backwards, A protrusion having a protruding back surface constituting a part of the back surface, protruding downward, and constituting a lower end portion of the pressing plate; A flexible shielding plate; a fixing portion that fixes the shielding plate to the rear surface of the protrusion, When the pusher plate is in the forward position, A garbage collection vehicle characterized in that the fixing portion is located above the position of the tip of the rotating plate when the rear surface of the convex portion to which the shielding plate is fixed and the tip of the rotating plate are closest to each other.

2. 2. The refuse collection vehicle according to claim 1, further comprising a convexity reinforcing member which constitutes a lower portion of said convexity and has a generally U-shaped shape that opens upward.

3. 3. The refuse collection vehicle according to claim 2, wherein the protrusion includes at least one protrusion reinforcing member different from the protrusion reinforcing member.

4. the pressing plate includes a main back surface component that configures a main back surface located above the protrusion back surface, 2. The refuse collection vehicle according to claim 1, wherein the rear surface of the convex portion is recessed forward from the main rear surface.

5. the pressing plate includes a main back surface component that configures a main back surface located above the protrusion back surface, When viewed from the side, the rear surface of the protrusion is substantially linear, When viewed from the side, the main back surface is substantially linear; When the pusher plate is in the forward position, 2. The refuse collection vehicle according to claim 1, wherein, when viewed from the side, an angle that the rear surface of the convex portion makes with the vertical direction is smaller than an angle that the main rear surface makes with the vertical direction.

6. A flexible side shielding plate is provided on both sides of the rear surface of the pushing plate, The side shielding plate is disposed above an outer portion of the shielding plate in a vehicle width direction, 2. A refuse collection vehicle according to claim 1, wherein an outer end of said shielding plate in the vehicle width direction is located outward in the vehicle width direction from an inner end of said side shielding plate in the vehicle width direction.

Images