garbage collection truck

Abstract

To provide a garbage collecting vehicle that can, after adjusting an amount of protruding outward in a vehicle width direction of a guide roller for guiding upward-downward movement of a cover member, inhibit an amount of protruding from being changed, .SOLUTION: A garbage collecting vehicle 1 comprises: a cover member 20 for opening / closing a throw-in port 3a of a garbage throw-in box 3; a fixed part 41 fixed to the cover member 20, that comprises a female screw 44a with a screw axial line C extending along in a vehicle width direction; a support shaft 45 comprising a male screw 45c screwed into the female screw 44a of the fixed part 41; and a guide roller 46 rotatably provided at a width direction outer end part of the support shaft 45. Therein an amount of protruding outward in a vehicle width direction of the guide roller 46 can be adjusted by adjusting a screwing amount of the male screw 45c. The garbage collecting vehicle 1 comprises: an engagement member 61 engaged with the support axis 45 in a state where the screwing amount is adjusted; and a regulation part 62 for regulating the engagement member 61 fixed onto a cover member 20 side and engaged with the support shaft 45 from rotating around the screw axial line C.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] For example, the garbage collection vehicle described in Patent Document 1 is equipped with a cover member that opens and closes the opening of a garbage bin. Guide rollers are rotatably mounted via support shafts on both sides of the cover member in the vehicle width direction. These guide rollers move up and down along rail members mounted on both sides of the garbage bin in the vehicle width direction. As a result, the cover member slides up and down relative to the garbage bin to open and close the opening.

[0003] The support shaft that supports the guide roller is attached to the cover member so as to be movable in the vehicle width direction. The guide roller is rotatably supported on the outer end of the support shaft in the vehicle width direction, and a nut is fastened to the inner end of the support shaft in the vehicle width direction. By adjusting the amount that the nut is fastened to the support shaft, the guide roller moves in the vehicle width direction together with the support shaft relative to the cover member, and the amount that the guide roller protrudes outward in the vehicle width direction can be adjusted (see Figure 5 of Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-047378 Summary of the Invention [Problem to be solved by the invention]

[0005] In the refuse collection vehicle of Patent Document 1, the tightening amount of the nuts may change due to vibrations while the vehicle is traveling. In this case, if the tightening amount of the nuts is too large, the guide rollers will protrude excessively outward in the vehicle width direction. If the guide rollers protrude excessively, the end faces of the support shafts and the sides of the guide rollers will move up and down while being strongly pressed against the rail members, which may cause the guide rollers to wear and become damaged. Furthermore, if the tightening amount of the nuts is too small, the guide rollers will not protrude enough outward in the vehicle width direction. If the guide rollers do not protrude enough, the guide rollers may separate from the rail members, making it impossible to move the cover member up and down.

[0006] The present invention has been made in consideration of the above circumstances, and aims to provide a garbage collection vehicle that can prevent the amount of protrusion of the guide roller that guides the up and down movement of the cover member outward in the vehicle width direction from changing after adjusting the amount of protrusion. [Means for solving the problem]

[0007] (1) The present invention provides a garbage collection box, a garbage drop box disposed behind the garbage collection box and having an inlet at the rear through which garbage is dropped, a loading device capable of loading garbage dropped into the garbage drop box from the inlet into the garbage collection box, a cover member for opening and closing the inlet, a fixing part having a female thread and fixed to the cover member with the screw axis of the female thread aligned in the vehicle width direction, a support shaft having a male thread that is fastened to the female thread of the fixing part and extending outward in the vehicle width direction beyond the female thread, and a support shaft rotatably provided at the outer end of the support shaft in the vehicle width direction. a guide roller attached to the garbage dump box, and a rail member provided on the garbage dump box for guiding the guide roller so that it can move up and down; and by adjusting the amount of tightening of the male screw, the amount of protrusion of the guide roller outward in the vehicle width direction relative to the fixed part can be adjusted via the support shaft, and the garbage collection vehicle is provided with an engaging member that engages with the support shaft when the amount of tightening is adjusted, and a regulating part that is provided on at least one of the cover member and the fixed part and regulates the engagement member engaged with the support shaft from rotating around the screw axis.

[0008] According to the present invention, the tightening amount of the male thread of the support shaft supporting the guide roller relative to the female thread of the fixing portion is adjusted, and the engaging member is engaged with the support shaft in a state where the amount of protrusion of the guide roller outward in the vehicle width direction is adjusted. The engaging member engaged with the support shaft is restricted by the restricting portion so as not to rotate around the thread axis of the female thread. This makes it possible to suppress changes in the tightening amount of the male thread of the support shaft. Therefore, after adjusting the amount of protrusion of the guide roller outward in the vehicle width direction, it is possible to suppress changes in that protrusion amount.

[0009] (2) In the garbage collection vehicle of (1), it is preferable that the engaging member is a pin member, the support shaft has an engaging hole formed therein into which the pin member is inserted in the radial direction and engaged, the regulating portion has a regulating member fixed to at least one of the support shafts while being arranged radially outward of the support shaft, and the regulating member has a regulating hole formed therein into which the pin member is inserted in the radial direction. In this case, the pin member, which is the engagement member, is inserted into and engaged with the engagement hole of the support shaft, and is also inserted into the restricting hole of the restricting member. As a result, even if the pin member tries to rotate around the screw axis together with the support shaft, the rotation of the pin member is restricted by the restricting hole. This makes it possible to suppress changes in the amount of tightening of the male thread of the support shaft with a simple structure.

[0010] (3) In the refuse collection vehicle of (2) above, it is preferable that a plurality of the engagement holes are formed in the support shaft with their phases shifted in the circumferential direction. When adjusting the tightening amount of the male screw of the support shaft, the engagement hole of the support shaft rotates around the thread axis relative to the restricting hole of the restricting member. Correspondingly, multiple engagement holes are formed with their phases shifted around the circumferential direction of the support shaft, so that any one of the multiple engagement holes of the support shaft can be aligned with the restricting hole of the restricting member according to the tightening amount of the male screw. This makes it possible to easily insert the pin member into the restricting hole and the engagement hole even after adjusting the tightening amount of the male screw. [Effects of the Invention]

[0011] According to the present invention, after adjusting the amount of projection of the guide roller that guides the up and down movement of the cover member outward in the vehicle width direction, it is possible to suppress changes in the amount of projection. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a side cross-sectional view showing the rear of a refuse collection vehicle according to an embodiment of the present invention. [Figure 2] This is a front view of the garbage bin seen from the rear of the vehicle. [Figure 3] FIG. [Figure 4] FIG. 10 is a front view of the support mechanism as seen from the front side of the cover member. [Figure 5] FIG. 5 is a cross-sectional view taken along the arrow II in FIG. 4. [Figure 6] 1(a) is a front view of the support shaft, and FIG. 1(b) is a view taken along the arrow II in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. [Overall configuration] Figure 1 is a side cross-sectional view showing the rear of a refuse collection vehicle 1 according to an embodiment of the present invention. In Figure 1, the refuse collection vehicle 1 is equipped with a refuse collection box 2 mounted on a vehicle body 1a, and a refuse drop box 3 arranged behind the refuse collection box 2. An opening 2a is formed at the rear end of the refuse collection box 2 for loading refuse into the refuse collection box 2. The refuse drop box 3 has an opening 3a at its rear through which refuse is dropped.

[0014] The garbage drop box 3 can rotate vertically relative to the garbage collection box 2, centering on a fulcrum P provided at the top of the garbage drop box 3. This allows the garbage drop box 3 to open and close relative to the garbage collection box 2. That is, when the garbage drop box 3 is rotated downward as shown in FIG. 1, it closes the opening 2a of the garbage collection box 2, and when it is rotated upward (not shown), it opens the opening 2a, allowing the garbage inside the garbage collection box 2 to be discharged.

[0015] The garbage collection vehicle 1 is equipped with a loading device T provided inside the garbage bin 3. The loading device T is capable of loading garbage that has been placed into the garbage bin 3 through the inlet 3a into the garbage storage box 2. The loading device T of this embodiment is a press type that includes a compression process in the garbage loading operation. The loading device T has a slider 5 and a push plate 7 that is rotatably attached to the lower end of the slider 5 via a pin 6. The slider 5 is movable along guide rails 4 provided on the left and right side walls 3c of the garbage bin 3. Push cylinders 8 are attached on both the left and right sides inside the garbage bin 3, between the side members 5a of the slider 5 and the side walls 3c of the garbage bin 3. Press cylinders 9 are attached between the side members 7a of the push plate 7 and the side members 5a of the slider 5.

[0016] The loading device T operates as follows. First, from the state shown by the solid lines in FIG. 1, the press cylinder 9 contracts, causing the push plate 7 to rotate counterclockwise and reverse (reversal process). Next, the push cylinder 8 contracts, causing the push plate 7 to descend diagonally backward together with the slider 5, compressing the garbage thrown in through the throw-in port 3a with the push plate 7 (primary compression process). Then, the press cylinder 9 expands, causing the push plate 7 to rotate clockwise, performing a secondary compression of the garbage (secondary compression process).

[0017] Next, from the state shown by the two-dot chain line in Fig. 1, the push cylinder 8 extends, causing the push plate 7 to rise diagonally forward together with the slider 5 to the state shown by the solid line in Fig. 1, and the secondary compressed garbage is pushed into the garbage storage box 2 (pushing process). In this way, the loading device T performs the inversion process, primary compression process, secondary compression process, and pushing process in order as one cycle, and can perform the operation of loading the garbage thrown into the garbage drop box 3 into the garbage storage box 2.

[0018] Fig. 2 is a front view of the garbage bin 3 as seen from the rear of the vehicle. In Figs. 1 and 2, the garbage bin 3 has a platform 10 provided below the inlet 3a. The platform 10 is attached to the garbage bin 3 so as to be rotatable about a horizontal axis, and can change its position between an upright position (solid line position in Fig. 1) and an unfolded position (dotted line position in Fig. 1). In other words, the platform 10 in the solid line position in Fig. 1 can be rotated downward (rearward) around its base end, and is rotated downward 90° to assume an unfolded state (dotted line position in Fig. 1).

[0019] When the platform 10 is in the unfolded position, the worker can temporarily place the trash on the platform 10 when depositing trash through the loading port 3a, improving the workability of depositing trash. The platform 10 is formed over the entire length of the loading port 3a in the vehicle width direction, and when it is in the upright position, it closes the bottom of the loading port 3a.

[0020] In Figures 1 and 2, the garbage collection vehicle 1 is equipped with a cover member 20 for opening and closing the opening 3a of the garbage bin 3, a rail member 30 provided on the garbage bin 3, and a support mechanism 40 for supporting the cover member 20 so that it can slide up and down along the rail member 30.

[0021] The cover member 20 is formed over the entire length of the insertion opening 3a in the vehicle width direction, and opens and closes the rest of the insertion opening 3a except for the lower part, that is, the part of the insertion opening 3a above the platform 10 when the insertion opening 3a is in the upright position. A handle 11 is provided at the lower end of the rear surface of the cover member 20 for sliding the cover member 20 up and down.

[0022] The rail members 30 are provided on the side walls 3c of the garbage bin 3, extending in the vertical direction along the side edges of the drop opening 3a in the vehicle width direction. Although not shown, the rail members 30 are provided on the left and right side walls 3c of the garbage bin 3, along both side edges of the drop opening 3a in the vehicle width direction.

[0023] Fig. 3 is a side view of the garbage bin 3. As shown in Fig. 3, when the mounting table 10 is in an upright position, the cover member 20 is slidable between an upper position (the position indicated by the two-dot chain line in Fig. 3) and a lower position (the position indicated by the solid line in Fig. 3). The cover member 20 of this embodiment is an outer type that is positioned above the top plate 3b of the garbage bin 3 in the upper position.

[0024] As shown by the solid line in Fig. 3, the cover member 20 slid to the lower position and the mounting base 10 in the upright position are arranged successively one above the other, thereby closing the entire insertion port 3a. Then, from this closed state, as shown by the two-dot chain line in Fig. 3, the cover member 20 is slid to the upper position and the mounting base 10 is set to the unfolded position (see Fig. 1), thereby opening the entire insertion port 3a.

[0025] The lower end of an arm member 32 is connected to the front end of the outer surface of the side wall 3c via a bracket 31 fixed to approximately the center in the vertical direction so as to be vertically slidable and vertically rotatable. The upper end of the arm member 32 is connected to the upper end of the cover member 20. As a result, when the cover member 20 slides up and down, the upper end of the arm member 32 rotates up and down around the lower end while the lower end of the arm member 32 moves up and down.

[0026] One end of an auxiliary member 33, such as a spring, is connected to the lower end of the arm member 32, and the other end of the auxiliary member 33 is connected to the upper end of the outer surface of the side wall 3c. As a result, the auxiliary member 33 constantly urges the arm member 32 to rotate upward. Therefore, the urging force of the auxiliary member 33 constantly urges the cover member 20 to slide upward between the upper and lower positions.

[0027] Both ends of the auxiliary member 33 are connected to the arm member 32 and the side wall 3c, respectively, so that the biasing force is greatest when the cover member 20 is in the lower position and is least when the cover member 20 is in the upper position. The cover member 20 is locked in the lower position by a locking mechanism (not shown). Although not shown, the bracket 31, arm member 32, and auxiliary member 33 are provided on the left and right side walls 3c of the trash bin 3, respectively.

[0028] [Support mechanism] Fig. 4 is a front view of the support mechanism 40 as seen from the front surface 21 side of the cover member 20. Fig. 5 is a cross-sectional view taken along arrow II in Fig. 4. In Figs. 4 and 5, the support mechanism 40 is provided on each side of the front surface 21 of the cover member 20 in the vehicle width direction. The support mechanism 40 includes a fixed portion 41 fixed to the cover member 20, a support shaft 45 supported by the fixed portion 41, and a guide roller 46 and a movable nut 47 attached to the support shaft 45.

[0029] The fixing portion 41 has a pair of fixing plates 42, 43 and a fixing nut 44. The pair of fixing plates 42, 43 are arranged on the vehicle width direction outer sides of the front surface 21 of the cover member 20 so that one side surface 42a, 43a of each plate faces each other with a gap in the vehicle width direction. Each fixing plate 42, 43 is fixed to the front surface 21 of the cover member 20 by welding or the like. Each fixing plate 42, 43 has a through hole 42c, 43c formed therethrough in the plate thickness direction. Each through hole 42c, 43c is formed to have a size that allows a male screw 45c (described later) of the support shaft 45 to be inserted therein.

[0030] A fixing nut 44 is fixed by welding or the like to the other side surface 43b of the fixing plate 43, which is disposed on the inner side in the vehicle width direction, at a position corresponding to the through hole 43c. The fixing nut 44 has a female thread 44a on its inner periphery. The thread axis C of the female thread 44a extends along the vehicle width direction.

[0031] Fig. 6(a) is a front view of the support shaft 45. Fig. 6(b) is a view seen from the arrow II in Fig. 6(a). In Fig. 4, Fig. 6(a), and Fig. 6(b), the support shaft 45 is a member whose axis X is arranged along the vehicle width direction. On the outer periphery of the support shaft 45, a first circumferential surface 45a, a second circumferential surface 45b, a male thread 45c, and a locking surface 45d are formed in this order from the outer side in the vehicle width direction (one axial side) to the inner side in the vehicle width direction (the other axial side).

[0032] The first circumferential surface 45a protrudes outward in the vehicle width direction beyond the cover member 20 and is inserted into the rail member 30. A guide roller 46 is attached to the first circumferential surface 45a so as to be rotatable about the axis X. As a result, the guide roller 46 is rotatably supported at the outer end of the support shaft 45 in the vehicle width direction.

[0033] The guide rollers 46 are arranged so that their outer peripheral surfaces roll in the vertical direction while contacting the guide surfaces 30a extending in the vertical direction of the rail member 30. The guide rollers 46 are guided so as to be movable in the vertical direction along the guide surfaces 30a of the rail member 30, so that the cover member 20 slides in the vertical direction along the rail member 30.

[0034] The second circumferential surface 45b is the portion of the support shaft 45 that has the largest outer diameter, and is formed shorter in the vehicle width direction (axial direction) than the first circumferential surface 45a. An annular stepped surface 45e against which the guide roller 46 abuts is formed between the first circumferential surface 45a and the second circumferential surface 45b. This stepped surface 45e restricts the movement of the guide roller 46 inward in the vehicle width direction.

[0035] The male thread 45c is formed to be longer in the vehicle width direction than the first circumferential surface 45a. The male thread 45c is inserted through the through holes 42c, 43c of the pair of fixing plates 42, 43 from the outer side in the vehicle width direction of the fixing portion 41 and is fastened to the female thread 44a of the fixing nut 44. As a result, while being supported by the fixing portion 41, the support shaft 45 rotatably supports the guide roller 46 on the first circumferential surface 45a, which extends outward in the vehicle width direction than the female thread 44a.

[0036] The movable nut 47 is tightened onto the male thread 45c on a position in the vehicle width direction outer side than the fixed plate 42, which is disposed on the outer side in the vehicle width direction. After adjusting the tightening amount of the male thread 45c as described below, the movable nut 47 is tightened until it abuts against the other side surface 42b of the fixed plate 42 via the washer 48. This makes it possible to reduce changes in the tightening amount of the support shaft 45 relative to the fixed nut 44.

[0037] The locking surface 45d is a portion to which a tool (not shown), such as a wrench or a spanner, is engaged, and is formed, for example, with a hexagonal cross section. By rotating the locking surface 45d around the axis X with a tool, it is possible to adjust the amount of tightening of the male thread 45c of the support shaft 45 relative to the female thread 44a of the fixing nut 44. By adjusting the amount of tightening of the male thread 45c in this manner, it is possible to adjust the amount of protrusion of the guide roller 46 outward in the vehicle width direction relative to the fixed portion 41 via the support shaft 45.

[0038] The amount of protrusion of the guide roller 46 outward in the vehicle width direction is adjusted so that the outer peripheral surface of the guide roller 46 contacts the guide surface 30a of the rail member 30, while the outer end surface 45f of the support shaft 45 in the vehicle width direction does not abut against the non-guide surface 30b of the rail member 30. The non-guide surface 30b is positioned further outward in the vehicle width direction than the guide roller 46, and is a surface with which the outer peripheral surface of the guide roller 46 does not come into contact.

[0039] [Configuration of anti-rotation mechanism] 4 and 5, the refuse collection vehicle 1 is equipped with anti-rotation mechanisms 60 that restrict the support shafts 45 of each support mechanism 40 from rotating around the screw axis C (axis X). The anti-rotation mechanisms 60 are provided on both sides in the vehicle width direction on the front surface 21 of the cover member 20. The anti-rotation mechanisms 60 are equipped with an engaging member 61 that engages with the support shafts 45, and a restricting portion 62 that restricts the engaging member 61 from rotating around the screw axis C. Note that the engaging member 61 is not shown in FIG. 4.

[0040] The engaging member 61 is made of, for example, a pin member. Hereinafter, the engaging member 61 will also be referred to as the pin member 61. The pin member 61 in this embodiment is a split pin, and has a base end 61a, which is the bent portion of the split pin, and a pair of tip ends 61b, which are both end portions of the split pin. The pin member 61 is inserted into and engaged with an engaging hole 45g formed in the support shaft 45. In this engaged state, the base end 61a and tip end 61b of the pin member 61 protrude radially outward from the support shaft 45.

[0041] The engagement holes 45g are formed radially through the support shaft 45, which is disposed between the pair of fixing plates 42, 43, in a portion where the male threads 45c are formed. The engagement holes 45g are circular holes, and a plurality of the engagement holes 45g (two in the illustrated example) are formed in the vehicle width direction. These engagement holes 45g are formed with a phase shift from each other in the circumferential direction of the support shaft 45. In this embodiment, the two engagement holes 45g are formed with a phase shift of 90° in the circumferential direction of the support shaft 45.

[0042] The restricting portion 62 has a restricting member 63 disposed radially outward of the support shaft 45 between the pair of fixing plates 42, 43. The restricting member 63 is formed by bending a flat plate member. The restricting member 63 has an enclosing plate portion 64 disposed radially outward of the support shaft 45, and a flat plate portion 65 disposed along the front surface 21 of the cover member 20.

[0043] The flat plate portion 65 is fixed by welding or the like to the front surface 21 of the cover member 20 above the support shaft 45. An enclosing plate portion 64 is integrally formed at the lower end of the flat plate portion 65. The enclosing plate portion 64 has an upper plate 64a extending diagonally downward and forward from the lower end of the flat plate portion 65, a front plate 64b bent at a right angle from the front end of the upper plate 64a and extending diagonally downward and rearward, and a lower plate 64c bent at a right angle from the lower end of the front plate 64b and extending diagonally upward and rearward.

[0044] The upper plate 64a is disposed above the support shaft 45 with a gap therebetween. The front plate 64b is disposed in front of the support shaft 45 with a gap therebetween. The lower plate 64c is disposed below the support shaft 45 with a gap therebetween. As a result, the surrounding plate portion 64 is formed with a U-shaped cross section so as to surround the support shaft 45 from three directions (above, ahead, and below). Both end portions in the vehicle width direction of the surrounding plate portion 64 (the upper plate 64a, the front plate 64b, and the lower plate 64c) are fixed to one side surface 42a, 43a of each fixing plate 42, 43 by welding or the like. As a result, the surrounding plate portion 64 also serves as a reinforcing member that suppresses bending of each fixing plate 42, 43 in the vehicle width direction.

[0045] A pair of upper and lower restriction holes 64d, 64e into which the pin members 61 are inserted are formed in the surrounding plate portion 64. The restriction hole 64d is formed to penetrate the upper plate 64a in its plate thickness direction (radial direction of the support shaft 45). The restriction hole 64e is formed to penetrate the lower plate 64c in its plate thickness direction (radial direction of the support shaft 45). Each of the restriction holes 64d, 64e is an elongated hole extending in the vehicle width direction, and is formed so that each engagement hole 45g of the support shaft 45 can face a part of its longitudinal direction in the radial direction.

[0046] [How to use the anti-rotation mechanism] Next, a description will be given of the procedure for using the anti-rotation mechanism 60. When adjusting the tightening amount of the male screw 45c of the support shaft 45 as described above, each engagement hole 45g of the support shaft 45 rotates around the screw axis C (axis X), so the worker aligns (disposes opposite) one of the engagement holes 45g of the support shaft 45 with each of the restriction holes 64d, 64e of the restriction member 63 according to the tightening amount.

[0047] Once the tightening amount has been properly adjusted and one of the engagement holes 45g of the support shaft 45 is aligned with the respective restriction holes 64d, 64e of the restriction member 63, the worker inserts the pin member 61 into these holes 45g, 64d, 64e. Specifically, the pin member 61 passes through the upper restriction hole 64d from above the restriction member 63 and is inserted into one of the engagement holes 45g of the support shaft 45. Furthermore, the pin member 61 passes through the engagement hole 45g and is inserted into the lower restriction hole 64e of the restriction member 63.

[0048] At this time, the pin member 61 is inserted until the base end 61a abuts against the upper plate 64a of the restricting member 63. As a result, the pair of tip ends 61b of the pin member 61 penetrate the restricting holes 64e of the restricting member 63 and protrude downward below the lower plate 64c, as shown by the solid line in Fig. 5. From this state, as shown by the two-dot chain line in Fig. 5, the worker bends the pair of tip ends 61b of the pin member 61 into two bifurcated positions at 90° each, and brings them into abutment against the lower plate 64c.

[0049] As a result, the pin member 61 is held in a state where it is inserted into each of the restriction holes 64d, 64e of the restriction member 63 and one of the engagement holes 45g of the support shaft 45. As a result, the pin member 61 engaged with the engagement hole 45g of the support shaft 45 is restricted from rotating around the screw axis C. As a result, the rotation of the support shaft 45 around the screw axis C is restricted.

[0050] [Effects of this embodiment] In the anti-rotation mechanism 60 of this embodiment, the tightening amount of the male thread 45c of the support shaft 45 supporting the guide roller 46 relative to the female thread 44a of the fixing nut 44 is adjusted, and in this state the amount of protrusion of the guide roller 46 outward in the vehicle width direction is adjusted, and then the engaging member 61 is engaged with the support shaft 45. The engaging member 61 engaged with the support shaft 45 is restricted by the restricting portion 62 so as not to rotate around the thread axis C of the female thread 44a. This makes it possible to suppress changes in the tightening amount of the male thread 45c of the support shaft 45. Therefore, after adjusting the amount of protrusion of the guide roller 46 outward in the vehicle width direction, it is possible to suppress changes in that protrusion amount.

[0051] The pin member 61, which is the engaging member 61, is inserted into and engaged with the engaging hole 45g of the support shaft 45, and is also inserted into the restricting holes 64d, 64e of the restricting member 63. As a result, even if the pin member 61 attempts to rotate around the screw axis C together with the support shaft 45, the rotation of the pin member 61 is restricted by the restricting holes 64d, 64e. This makes it possible to suppress changes in the amount of tightening of the male screw 45c of the support shaft 45 with a simple configuration.

[0052] When adjusting the tightening amount of the male screw 45c of the support shaft 45, the engagement hole 45g of the support shaft 45 rotates around the thread axis C relative to the restriction holes 64d, 64e of the restriction member 63. Correspondingly, a plurality of engagement holes 45g are formed with their phases shifted circumferentially around the support shaft 45, so that one of the plurality of engagement holes 45g of the support shaft 45 can be aligned with the restriction holes 64d, 64e of the restriction member 63 in accordance with the tightening amount of the male screw 45c. This makes it possible to easily insert the pin member 61 into the restriction holes 64d, 64e and the engagement hole 45g even after adjusting the tightening amount of the male screw 45c.

[0053] [others] The garbage collection vehicle 1 of this embodiment is equipped with a press-type loading device T, but may also be equipped with a rotary plate-type loading device that loads garbage using a rotary plate and a push plate. The cover member 20 of this embodiment is an outer type, but may also be an inner type that is positioned below the top plate 3b of the garbage bin 3 in the upper position.

[0054] Although the restricting member 63 in this embodiment is fixed to both the fixing portion 41 and the cover member 20, it may be fixed to at least one of them. Furthermore, the restricting member 63 is not limited to this embodiment, and may be formed, for example, in a cylindrical shape so as to surround the entire support shaft 45. Instead of being elongated holes, the restricting holes 64d, 64e of the restricting member 63 may be multiple circular holes formed in the vehicle width direction.

[0055] Although the restricting portion 62 in this embodiment has a restricting member 63, it is not limited to this. For example, the restricting portion 62 may be a groove or a hole formed in the cover member 20 instead of the restricting member 63. In this case, by inserting and engaging the tip portion 61b of the pin member 61 into the groove or the like of the cover member 20, it is possible to restrict the rotation of the pin member 61 around the screw axis C.

[0056] Although the support mechanism 40 of this embodiment includes the movable nut 47, it does not necessarily have to include the movable nut 47. In that case, the fixing nut 44 of the fixing part 41 may be fixed to the other side surface 42b of the fixing plate 42 on the outer side in the vehicle width direction. The fixing part 41 is not limited to the configuration of this embodiment. For example, the female thread 44a of the fixing part 41 may be formed on the fixing plate 42 or the fixing plate 43 instead of the fixing nut 44.

[0057] In the present embodiment, the support shaft 45 has a plurality of engagement holes 45g formed therein with a phase difference of 90° in the circumferential direction, but the phase angle may be an angle other than 90°. In addition, it is sufficient that the support shaft 45 has at least one engagement hole 45g formed therein.

[0058] The pin member 61 may be inserted through the upper restriction hole 64d as in this embodiment, or through the lower restriction hole 64e. When the pin member 61 is inserted through the upper restriction hole 64d, the lower restriction hole 64e of the restriction member 63 does not need to pass through the lower plate 64c. When the pin member 61 is inserted through the lower restriction hole 64e, the upper restriction hole 64d of the restriction member 63 does not need to pass through the upper plate 64a.

[0059] The engagement hole 45g does not have to pass through the support shaft 45. For example, when the pin member 61 is inserted through the upper restriction hole 64d, the engagement hole 45g may be formed in the support shaft 45 so as to open toward the upper plate 64a, and may not pass through to the lower plate 64c. In this case, there is no need to form the restriction hole 64e in the lower plate 64c. Furthermore, when the pin member 61 is inserted through the lower restriction hole 64e, the engagement hole 45g may be formed in the support shaft 45 so as to open toward the lower plate 64c, and may not pass through to the upper plate 64a. In this case, there is no need to form the restriction hole 64e in the upper plate 64a.

[0060] The engaging member 61 in this embodiment is a pin member that is inserted into and engaged with the engaging hole 45g of the support shaft 45, but it may be formed into any shape as long as it can engage with the support shaft 45. For example, the engaging member 61 may be formed so as to be fitted into the outer circumferential surface of the support shaft 45 and engaged therewith.

[0061] It should be noted that the embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the meaning described above, and is intended to include meanings equivalent to the claims and all modifications within the scope thereof. [Explanation of symbols]

[0062] 1. Refuse collection truck 2. Garbage collection box 3 Garbage disposal box 3a Inlet 20 Cover member 30 Rail member 41 Fixed part 44a female thread 45 Support shaft 45c male thread 45g engagement hole 46 Guide roller 61 Pin member (engagement member) 62 Regulatory Department 63 Regulatory components 64d, 64e Restriction holes C Screw axis T loading device

Claims

1. A garbage collection box, a trash container disposed behind the trash collection container and having an inlet at the rear for trash to be thrown into; a loading device capable of loading the garbage thrown into the garbage throwing box from the throwing port into the garbage storage box; a cover member for opening and closing the insertion port; a fixing portion having a female thread and fixed to the cover member with the thread axis of the female thread aligned in the vehicle width direction; a support shaft having a male thread that is fastened to the female thread of the fixing portion and that extends outward in the vehicle width direction than the female thread; a guide roller rotatably provided at an outer end of the support shaft in the vehicle width direction; a rail member provided in the trash bin to guide the guide roller so as to be movable in the up and down direction; A garbage collection vehicle in which the amount of protrusion of the guide roller outward in the vehicle width direction relative to the fixed portion can be adjusted via the support shaft by adjusting the tightening amount of the male screw, an engaging member that is engaged with the support shaft in a state where the tightening amount is adjusted; A garbage collection vehicle comprising a regulating portion provided on at least one of the cover member and the fixed portion, which regulates the engagement member engaged with the support shaft from rotating around the screw axis.

2. the engaging member is a pin member, The support shaft is formed with an engagement hole in which the pin member is inserted and engaged in the radial direction thereof, the restricting portion has a restricting member fixed to at least one of the support shafts in a state where the restricting portion is disposed radially outward of the support shaft, The refuse collection vehicle according to claim 1 , wherein the restricting member has a restricting hole formed therein into which the pin member is inserted in the radial direction.

3. 3. The refuse collection vehicle according to claim 2, wherein a plurality of said engagement holes are formed in said support shaft with phases shifted in the circumferential direction thereof.

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