JP2017048049A - Refuse collecting vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refuse collecting vehicle that allows residual refuse in a refuse throwing-in box to be checked quickly.SOLUTION: A refuse collecting vehicle 1 includes: an opening/closing door 6 for opening a throwing-in port 7 by moving above the throwing-in port 7 of a refuse throwing-in box 4, and closing the throwing-in port 7 by moving toward the throwing-in port 7; and a control device for controlling upward and downward movements of the opening/closing door 6. The control device raises the opening/closing door 6 so that the lower end 6a of the opening/closing door 6 is located at a height position P2 lower than the height of the lower end 6a when the opening/closing door 6 is in a full-opening position P1 according to an instruction for opening the opening/closing door 6 halfway.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a garbage truck, and more particularly to a structure for confirming dust residue in a dust box.

  Conventionally, a dust bin that is mounted on a chassis and has a rear opening portion, and a dust bin that covers the rear opening portion so that the rear opening portion can be opened and closed by a rotation shaft provided at the upper edge of the rear opening portion. Collection vehicles are known. The above-mentioned dust input box has an input port through which dust is input. In the dust input box, a dust loading device is provided that compresses the dust input from the input port and sends it to the dust storage box. Moreover, the dust input box is provided with a door that opens and closes the input port by moving up and down (see, for example, Patent Document 1). The above door may be generally referred to as a tailgate.

  The door is raised and lowered by an opening / closing arm. One end of the open / close arm is rotatably supported on the side surface of the dust box, and the other end of the open / close arm is rotatably connected to the upper end side of the door. The pivoting of the open / close arm is generally performed manually, but there is an optional product that is performed by a hydraulic cylinder.

JP 2010-228850 A

  In the conventional garbage collection vehicle, it was necessary to fully open the door and open the inlet when trying to confirm the residue of the dust in the dust box. For this reason, there has been a demand for a garbage truck that allows an operator to quickly confirm dust residues.

  This invention is made | formed in view of this point, The objective is to provide the refuse collection vehicle which can confirm the dust residue in a dust input box rapidly.

  A garbage collection vehicle according to the present invention is a dust collection vehicle including a dust storage box mounted on a chassis, and a dust collection box having an input port into which dust is input and connected to the dust storage box. An open / close door that opens the input port by moving above the input port of the dust input box and closes the input port by moving toward the input port; and an up / down operation of the open / close door A control device that controls the position of the door, which is lower than a height of a lower end of the door when the door is in a fully open position in response to an instruction to open the door halfway. The open / close door is raised so that the lower end is located at the bottom.

  According to the garbage truck according to the present invention, the open / close door is raised so that the lower end is positioned at a position lower than the height of the lower end of the open / close door when the open / close door is in the fully open position according to the instruction. . Thereby, the operator can check the residue of the dust in the dust box without fully opening the door. This eliminates the time required to fully open the open / close door, and allows the operator to quickly perform the confirmation operation.

  According to a preferred aspect of the present invention, the control device is configured such that the lower end is positioned at a height of 1/3 or less of the lower end height of the open / close door when the open / close door is in the fully open position. The door is configured to be raised.

  According to the said aspect, the said raising position of an opening-and-closing door is a position sufficient to confirm the dust residue in a dust input box. As a result, the operator can raise the open / close door to the minimum height position and perform the confirmation work quickly.

  According to another preferable aspect of the present invention, the electronic apparatus further includes a confirmation switch for sending the instruction to the control device.

  According to the above aspect, the operator can easily open and close the open / close door simply by operating the confirmation switch.

  According to another preferable aspect of the present invention, the apparatus further includes a work lamp that is provided in the dust box and is turned on when the confirmation switch is operated.

  According to the above aspect, when the confirmation switch is operated by the worker, the raising and lowering operation of the open / close door is started, and the inside of the dust box is brightened by the lighting of the work lamp. Thereby, the operator can confirm the dust residue accurately in a state where the inside of the dust box is bright.

  As described above, according to the present invention, it is possible to provide a refuse collection vehicle capable of quickly confirming the residue of dust in the dust box.

It is a side view of the garbage truck which concerns on one Embodiment of this invention. It is the perspective view which looked at the garbage truck which concerns on one Embodiment of this invention from back. It is a side view of the refuse loading apparatus which concerns on one Embodiment of this invention. It is a side view of the refuse input box which concerns on one Embodiment of this invention. It is a figure of the hydraulic circuit provided in the refuse input box which concerns on one Embodiment of this invention. It is a front view of the operation switch containing the confirmation switch which concerns on one Embodiment of this invention. It is a perspective view of the state where the opening-and-closing door concerning one embodiment of the present invention was opened halfway.

  Hereinafter, the refuse collection vehicle 1 of embodiment of this invention is demonstrated. In the following description, unless otherwise specified, front, rear, left, right, upper, and lower are front, rear, left, right, upper, and lower, respectively, as viewed from the occupant seated on the seat of the garbage truck 1. Shall mean. Up and down respectively mean up and down in the vertical direction when the garbage truck 1 is stopped on a horizontal plane. Reference numerals F, Re, L, R, U, and D attached to the drawings represent front, rear, left, right, upper, and lower, respectively.

  As shown in FIG. 1, the refuse collection vehicle 1 according to the present embodiment includes a dust storage box 3 mounted on a chassis 2 and a dust input box 4 connected to the dust storage box 3. A cab 1 a is provided in front of the dust container 3. The cab 1a is provided with an instrument panel 1b. An opening 3 a is formed in the rear part of the dust container 3. The dust box 4 is supported by the rotating shaft 5 above the opening 3 a of the dust container 3. The dust input box 4 is configured to be rotatable about a rotation shaft 5 by an expansion / contraction operation of a rotation cylinder (not shown) provided between the dust storage box 3 and the dust input box 4. Thereby, the dust input box 4 can open and close the opening 3a of the dust container 3. FIG. 4 is a side view of the dust input box 4 in which the side cover 4b of FIG. 1 covering the side wall 4c of the dust input box 4 is omitted. As shown in FIG. A cover 4a is provided with a gap from the upper edge of the side wall 4c. A dust loading device 8 (see FIG. 3) is provided in the dust throwing box 4. The dust input box 4 is closed, and the dust in the dust input box 4 is fed into the dust container 3 by the dust loading device 8. The discharge of the dust in the dust container 3 is performed with the dust input box 4 opened.

  As shown in FIG. 1, a charging port 7 is formed at the rear of the dust charging box 4. The dust is thrown into the dust throwing box 4 from the charging port 7. In addition, an opening / closing door 6 for opening and closing the above-described charging port 7 is provided at the rear part of the dust box 4. The opening / closing door 6 is generally called a tailgate. The opening / closing door 6 has substantially the same outer shape as the opening shape of the insertion port 7. The opening / closing door 6 opens the charging port 7 by moving above the charging port 7. In this case, the opening / closing door 6 is fully opened at the fully opened position. The fully open position of the opening / closing door 6 means a position where the opening / closing door 6 does not rise any further. Moreover, when the opening / closing door 6 moved upward is lowered, the insertion port 7 is closed. In this embodiment, by stopping the opening / closing door 6 at a position less than the height in the fully open position, the input port 7 can be opened at a height position where the input port 7 is not fully opened. Details will be described later. As shown in FIG. 2, a handle 49 is provided at the lower part of the open / close door 6. The operator can manually open and close the open / close door 6 by holding the handle 49 and moving the open / close door 6 up and down. An operation switch 80 for raising or lowering the open / close door 6 is provided on the left side of the rear part of the dust box 4. Details of the operation switch 80 will be described later.

  Next, the dust loading device 8 will be described. As shown in FIG. 3, a dust loading device 8 for sending the dust in the dust throwing box 4 into the dust containing box 3 is provided inside the dust throwing box 4. The dust loading device 8 compresses the dust thrown into the dust throwing box 4 and feeds the compressed dust into the dust containing box 3. As shown in FIG. 1, the instrument panel 1b of the cab 1a is provided with a PTO (Power Take-Off) switch 21 for driving a hydraulic pump (not shown) serving as a drive source of the dust loading device 8. It has been. When the operator depresses the PTO switch 21, the hydraulic pump operates so as to supply hydraulic oil to each hydraulic cylinder of the dust loading device 8. By operating the PTO switch 21, the power of the engine of the garbage collection vehicle 1 is transmitted to the garbage loading device 8 via a hydraulic pump by, for example, a transmission PTO.

  The dust loading device 8 is a so-called press type, and includes a sliding plate 10 and a rotatable guide roller 11 attached to the sliding plate 10. The left and right side walls 4c of the dust box 4 are provided with guide groove members 9 extending rearward and obliquely downward. The guide roller 11 is slidably engaged with the guide groove member 9.

  As shown in FIG. 3, a boss portion 19 is formed on the upper side portion of the sliding plate 10. The support shaft 12 is inserted through the boss portion 19. A sliding cylinder 13 made of a hydraulic cylinder is connected to the support shaft 12. The sliding cylinder 13 extends rearward and obliquely downward from the support shaft 12. By the expansion and contraction operation of the sliding cylinder 13, the sliding plate 10 is reciprocated up and down along the guide groove member 9. In this embodiment, two sliding cylinders 13 are provided on the left and right, but the number of sliding cylinders 13 is not particularly limited.

  A compression plate 15 is provided at the lower end of the sliding plate 10. The compression plate 15 is supported by a shaft 15b so as to be swingable in the front-rear direction. A connecting portion 15a is formed behind the shaft 15b of the compression plate 15. A rocking cylinder 14 made of a hydraulic cylinder is connected to the connecting portion 15a and the support shaft 12. The compression plate 15 swings in the front-rear direction by the expansion / contraction operation of the swing cylinder 14. The swing cylinder 14 includes a cylinder tube 14a and a cylinder rod 14b. In this embodiment, the left and right swing cylinders 14 are provided, but the number of swing cylinders 14 is not particularly limited.

  The dust loading device 8 includes a reversing step of swinging the compression plate 15 backward when the sliding plate 10 is in the raised position, and sliding the sliding plate 10 downward when the compression plate 15 is in the rear position. A lowering step, a compression step of swinging the compression plate 15 forward when the sliding plate 10 is in the lowering position, and an elevation of sliding the sliding plate 10 upward when the compression plate 15 is in the forward position. The process is operated as one cycle. As described above, the dust loading device 8 feeds the dust thrown into the dust throwing box 4 into the dust containing box 3 by performing the above cycle.

  Next, an opening / closing mechanism for opening / closing the opening / closing door 6 will be described. As shown in FIG. 4, guide rails 40 are provided from the upper end to the lower end on both the left and right sides of the input port 7 of the dust input box 4. The guide rail 40 has a shape along the curved rear edge of the side cover 4b of the dust box 4. The guide rail 40 is formed in, for example, a concave section (that is, a groove shape). Guide elements 41 that move along the guide rails 40 are provided on both sides of the lower end of the open / close door 6. The guide element 41 is constituted by a roller and is provided so as to be movable in the groove of the guide rail 40. Further, on both sides of the upper end of the opening / closing door 6, there are provided connecting shafts 42 protruding in the left-right direction and connected to the opening / closing arm 43.

  4 d of edge parts are provided in the front edge part of the dust input box 4, respectively. A support portion 44 is provided on the edge portion 4d. The support portion 44 rotatably supports the base end portion of the opening / closing arm 43. A front end portion of the open / close arm 43 is rotatably connected to a side portion of the open / close door 6. In addition, in order to avoid interference with each part, the opening / closing arm 43 is bent and formed. A reinforcing plate 43 a for reducing the bending stress of the bent portion is fixed to the bent portion of the opening / closing arm 43. Although the opening / closing arm 43 is bent, the shape of the opening / closing arm 43 is not particularly limited.

  As shown in FIG. 4, the open / close arm 43 is configured to be rotatable. The opening / closing arm 43 is rotated by an expansion / contraction operation of the hydraulic cylinder 45. A pair of left and right hydraulic cylinders 45 are provided. The hydraulic cylinder 45 includes a cylinder rod 45a, a cylinder tube 45b, and a piston 45c (see FIG. 5) provided at one end of the cylinder rod 45a. This will be described in detail below. A connecting portion 46 is attached to the proximal end portion of the opening / closing arm 43. One end of a cylinder rod 45 a of the hydraulic cylinder 45 is connected to the connection portion 46. The cylinder tube 45b of the hydraulic cylinder 45 is fixed to the edge 4d. The urging member 47 is provided with a biasing member 47 along the side wall 4c. The biasing member 47 is, for example, a tension coil spring. One end of the urging member 47 is hooked on the open / close arm 43, and the other end of the urging member 47 is hooked at a predetermined position on the side wall 4c. As a result, the open / close arm 43 is biased in the direction of rotating upward by the biasing force of the biasing member 47. Note that a tension adjusting mechanism 48 is connected to the urging member 47. The tension adjusting mechanism 48 is for adjusting the amount of deflection of the biasing member 47. A work lamp 50 is provided in the garbage throwing box 4. When the open / close door 6 is in a closed state, the inside of the dust box 4 is usually dark. The work lamp 50 is turned on when a confirmation switch 84 (see FIG. 6) described later is pressed by the operator. The work lamp 50 is lit to brighten the inside of the dust box 4. The work light 50 is turned off when the confirmation switch 84 is pressed again by the operator.

  In the configuration as described above, when the open / close door 6 is changed from the closed state to the open state, the hydraulic cylinder 45 is extended. As a result, a force that pushes up the connection portion 46 acts on the connection portion 46, so that the open / close arm 43 rotates counterclockwise in FIG. 4 about the fulcrum of the support portion 44. Along with this, the open / close door 6 connected to the open / close arm 43 rises. Thereby, the input port 7 of the dust input box 4 is opened.

  On the other hand, when the open / close door 6 is changed from the open state to the closed state, the hydraulic cylinder 45 is contracted. As a result, a force that pushes down the connecting portion 46 acts on the connecting portion 46, so that the open / close arm 43 rotates clockwise in FIG. 4 about the fulcrum of the support portion 44. Along with this, the open / close door 6 is lowered. Thereby, the insertion port 7 of the dust input box 4 is closed. The open / close door 6 is opened and closed by the above method.

  Next, a hydraulic circuit that controls the operation of the hydraulic cylinder 45 (see FIG. 4) will be described. As shown in FIG. 5, the refuse input box 4 according to the present embodiment is provided with an electric hydraulic pump unit 60 different from the drive source of the dust loading device 8. The electric hydraulic pump unit 60 includes an electric motor 60a, a reservoir tank 60b, a hydraulic pump 60c connected to the electric motor 60a, a check valve 60d, a discharge port 60e, a suction port 60f, a relief valve 60g, It has. When the hydraulic pump 60c is driven by the electric motor 60a, the hydraulic oil in the reservoir tank 60b is sucked up by the hydraulic pump 60c, passes through the check valve 60d, and is discharged from the discharge port 60e. A relief valve 60g and a pressure gauge 61 are connected to the discharge line of the hydraulic pump 60c. The discharge port 60e is connected to one port of a first switching valve 63 which is a so-called four-port three-position electromagnetic switching valve. The suction port 60 f is connected to the other port of the first switching valve 63. The other two ports (ports on the upper side of the drawing) of the first switching valve 63 are connected to a second switching valve 64 and a third switching valve 65, respectively, which are electromagnetic switching valves at two ports and two positions. These switching valves 64 and 65 are poppet type electromagnetic switching valves, and have an advantage that there is little internal leakage of hydraulic oil.

  FIG. 5 shows a pair of left and right hydraulic cylinders 45. The hydraulic cylinder 45 includes a rod side port 45d provided on the cylinder rod 45a side and a head side port 45e provided on the cylinder head (piston 45c) side. The second switching valve 64 and the rod side port 45d are connected to each other via a one-way throttle valve 66 arranged to allow the flow to the hydraulic cylinder 45 side. Further, the third switching valve 65 and the head side port 45e are connected to each other via a one-way throttle valve 67 arranged to allow the flow to the hydraulic cylinder 45 side.

  The hydraulic circuit in FIG. 5 is provided with a pressure oil releasing means 70 for allowing the pressure oil on the head side and the rod side of the hydraulic cylinders 45, 45 to be released at any time. The pressure oil releasing means 70 includes a construction pipe 62a, a first on-off valve 68a, a second on-off valve 68b, a drain pipe 62b, and a tank 69 connected to the end of the drain pipe 62b. The installation pipe 62a is connected to the rod side port 45d and the head side port 45e of the hydraulic cylinders 45, 45. The first on-off valve 68a is provided in the erection pipe 62a. The drain pipe 62b is connected to the rod side port 45d of the hydraulic cylinders 45, 45. The second on-off valve 68b is provided in the drain pipe 62b. In such a configuration, the pressure oil on the head side and the rod side of the hydraulic cylinders 45 and 45 is released from the cylinder 45 by opening the first on-off valve 68a and the second on-off valve 68b, respectively. It has become. Thereby, the hydraulic pressure by the hydraulic cylinders 45, 45 is released, and the open / close door 6 can be easily raised and lowered by manual operation. The pressure oil releasing means 70 may be any means that releases the pressure of the hydraulic oil on the head side and the rod side of the hydraulic cylinders 45, 45 so that the cylinder rod 45a can be moved freely. The configuration is not limited.

  Next, the switching operation of each valve when the hydraulic cylinder 45 is expanded and contracted will be described. First, when extending the hydraulic cylinder 45, the first on-off valve 68a and the second on-off valve 68b are closed to drive the electric motor 60a. The flow path in the first switching valve 63 is switched to the left position a, the flow path in the second switching valve 64 is switched to the right position b, and the flow path in the third switching valve 65 is held at the left position a. . As a result, hydraulic oil is supplied from the discharge port 60e to the head side port 45e of the hydraulic cylinders 45, 45, and is returned from the rod side port 45d of the hydraulic cylinders 45, 45 to the suction port 60f. As a result, the cylinder rod 45a moves in the direction in which the hydraulic cylinder 45 extends. As a result, the open / close door 6 (see FIG. 4) rises and the insertion port 7 (see FIG. 4) is opened.

  When stopping the movement of the cylinder rod 45a when the hydraulic cylinder 45 is extended, the flow path in the first switching valve 63 is switched from the above state to the neutral position c, and the flow path in the second switching valve 64 is switched. Switch to left position a. As a result, the supply of the hydraulic oil to the head side port 45e is stopped, and the escape path for the hydraulic oil in the rod side port 45d and the head side port 45e is closed. As a result, the cylinder head 45a stops moving and maintains the stopped state. By holding the second switching valve 64 and the third switching valve 65 at the left position a, internal leakage is reduced, and the hydraulic cylinder 45 contracts and the open / close door 6 is prevented from being lowered. .

  On the other hand, when the hydraulic cylinder 45 is contracted, the flow path in the first switching valve 63 is switched to the right position b and the flow path in the second switching valve 64 is held at the left position a from the stop state described above. The flow path in the third switching valve 65 is switched to the right position b. Thereby, the hydraulic oil is supplied from the discharge port 60e to the rod side port 45d, and the hydraulic oil is returned from the head side port 45e to the suction port 60f. As a result, the cylinder rod 45a moves in the direction in which the hydraulic cylinder 45 contracts. As a result, the open / close door 6 is lowered and the inlet 7 is closed.

  When stopping the movement of the cylinder rod 45a when the hydraulic cylinder 45 contracts, the flow path in the first switching valve 63 is switched from the above state to the neutral position c, and the flow path in the third switching valve 65 is switched. Switch to left position a. As a result, the supply of the hydraulic oil to the rod side port 45d is stopped, and the escape path for the hydraulic oil in the rod side port 45d and the head side port 45e is closed. As a result, the cylinder rod 45a stops moving and maintains a stopped state. The rotation operation of the electric motor 60a, the switching operation of the first switching valve 63, the switching operation of the second switching valve 64, and the switching operation of the third switching valve 65 are controlled by a control device 100 having a CPU (Central Processing Unit). Is done. In the present embodiment, the control device 100 controls the switching operation of each valve to fully open and close the open / close door 6 and to open the open / close door 6 halfway as described later.

  Next, the operation switch 80 will be described. As shown in FIG. 6, the operation switch 80 includes a switch box 81 in which various switches are arranged. The switch box 81 is provided with a loading switch 80a, a descending switch 80b, an ascending switch 80c, a reversing switch 80d, and an emergency stop switch 80e. The switch box 81 is provided with a door up switch 82, a door down switch 83, and a confirmation switch 84. The loading switch 80a is a switch for causing a loading operation by the sliding plate 10 and the compression plate 15 of FIG. The lowering switch 80 b is a switch for lowering the sliding plate 10. The raising switch 80 c is a switch for raising the sliding plate 10. The reversing switch 80d is a switch for reversing the compression plate 15. The emergency stop switch 80e is a switch for urgently stopping the loading operation. The door raising switch 82 is a switch for raising the opening / closing door 6 (see FIG. 2) and fully opening the insertion port 7 (see FIG. 2). The door lowering switch 83 is a switch for lowering the opening / closing door 6 and closing the insertion port 7. The confirmation switch 84 raises the opening / closing door 6 to a position lower than the height position when fully opened to open the opening 7, or lowers the opening / closing door 6 thus raised to close the opening 7. It is a switch for. Specifically, when the confirmation switch 84 is pressed by the operator, as shown in FIG. 7, for example, 1 / of the height position P1 of the lower end 6a of the door 6 when the door 6 is in the fully open position. The open / close door 6 is raised so that the lower end 6a is located at a height position P2 of 3 or less. Further, when the opening / closing door 6 raised in this way is lowered to close the insertion port 7, the operator depresses the confirmation switch 84 again. Hereinafter, raising the open / close door 6 to a height position less than the fully open position by operating the confirmation switch 84 is referred to as halfway opening.

  When the operator presses the confirmation switch 84 in a state where the open / close door 6 is closed, the flow returns to FIG. 5 and the flow path in the first switching valve 63 is switched to the left position a by the control device 100. The flow path in the switching valve 64 is switched to the right position b, and the flow path in the third switching valve 65 is held at the left position a. As a result, the hydraulic cylinder 45 starts to extend, and the door 6 is raised. Then, after a predetermined time has elapsed since the hydraulic cylinder 45 started to expand, the control device 100 switches the flow path in the first switching valve 63 to the neutral position c, and the flow path in the second switching valve 64 is changed. Switching to the left position a, the flow path in the third switching valve 65 is held at the left position a. Thereby, as shown in FIG. 7, the raising / lowering of the door 6 stops, and the door 6 is opened halfway. In addition, said predetermined time means the time shorter than the time required for the opening / closing door 6 to fully open from the closed state.

  On the other hand, when the confirmation switch 84 is pressed again by the operator while the open / close door 6 is opened halfway, the control device 100 switches the flow path in the first switching valve 63 to the right position b, and the second The flow path in the switching valve 64 is held at the left position a, and the flow path in the third switching valve 65 is switched to the right position b. As a result, the hydraulic cylinder 45 starts to contract, and the open / close door 6 is lowered. As described above, the halfway opening operation of the opening / closing door 6 and the closing operation of the opening / closing door 6 in the halfway open state are performed.

  As described above, according to the present embodiment, the lower end 6a is positioned at a position lower than the height of the lower end 6a of the open / close door 6 when the open / close door 6 is in the fully open position in response to the halfway opening instruction by the confirmation switch 84. The open / close door 6 is raised so that is positioned. Thereby, the operator can check the residue of the dust in the dust box 4 without fully opening the door 6. As a result, the time required to fully open the opening / closing door 6 is not required, and the operator can quickly perform the confirmation operation.

  Further, according to the present embodiment, the lower end 6a is positioned at a height position P2 that is, for example, 1/3 or less of the height position P1 of the lower end 6a of the open / close door 6 when the open / close door 6 is in the fully open position. The opening / closing door 6 is raised. The above-described raised position of the open / close door 6 is a position sufficient to confirm the dust residue in the dust box 4. Thereby, since it is not necessary to raise the open / close door 6 unnecessarily, the operator can raise the open / close door 6 to a minimum height position and perform a check operation quickly.

  Further, according to the present embodiment, since the confirmation switch 84 is provided, the operator can easily open and close the open / close door 6 simply by operating the confirmation switch 84.

  Further, according to the present embodiment, when the confirmation switch 84 is operated by the operator, the ascending / descending operation of the open / close door 6 is started, and the inside of the dust box 4 is brightened by the lighting of the work lamp 50. Thereby, the operator can confirm the dust residue accurately in a state where the inside of the dust box 4 is bright.

  The embodiment of the present invention has been described above. However, the above-described embodiment is merely an example, and the present invention can be implemented in other forms as follows.

  In the above embodiment, when the opening / closing door 6 is opened halfway, the height position P2 is, for example, 1/3 or less of the height position P1 of the lower end 6a of the opening / closing door 6 when the opening / closing door 6 is in the fully open position. Although the open / close door 6 is raised so that the lower end 6a is located, the present invention is not limited to this. When the door 6 is opened halfway, the door 6 may be raised to an arbitrary height position less than the height position P1 when the door 6 is fully opened. That is, the opening / closing door 6 is moved to a height position that is less than the height position P1 when the opening / closing door 6 is fully opened, and at which the operator can easily check the dust residue in the dust box 4. Just raise it.

  Moreover, in the said embodiment, when the confirmation switch 84 was pushed down by the operator, the closed door 6 was raised and stopped after a predetermined time, thereby opening the door 6 halfway. However, the present invention is not limited to this. The door 6 may be controlled to be stopped by detecting the door 6 with a sensor when the door 6 reaches a position where the door 6 is opened halfway.

  In the above embodiment, the hydraulic pump serving as the drive source of the dust loading device 8 is configured such that the engine power is transmitted by the PTO, and the hydraulic cylinder 45 for opening and closing the open / close door 6 includes the dust Although it is configured to be driven by an electric hydraulic pump unit 60 different from the loading device 8, it is not limited to this. For example, hydraulic oil may be sent from a hydraulic pump serving as a drive source for the dust loading device to a hydraulic cylinder for opening and closing the door.

  Moreover, in the said embodiment, although the operator operated the confirmation switch 84, it comprised so that the work light 50 might be lighted in connection with the middle opening operation | movement of the door 6, but it is not limited to this. . A switch for turning on the work lamp 50 may be provided separately. Further, the work lamp may be turned on in conjunction with the PTO switch.

  Moreover, in the said embodiment, although the opening-and-closing arm 43 which opens and closes the opening-and-closing door 6 was rotated by the hydraulic cylinder 45 of a hydraulic cylinder, it is not limited to this. For example, the open / close arm 43 may be rotated by an electric motor.

  Moreover, in the said embodiment, although the dust loading apparatus 8 was what was called a press type, and comprised it having the sliding plate 10 and the compression plate 15 of the lower end part of the sliding plate 10, it is limited to this. It is not something. The dust loading device may be configured as a so-called rotating plate type having a pushing plate and a rotating plate or other methods.

  Furthermore, in the said embodiment, although the drive source of the refuse loading apparatus 8 was a hydraulic pump, and it comprised so that engine power might be transmitted by PTO with this hydraulic pump, it is not limited to this. For example, the present invention can be applied to a so-called electric dust collection vehicle in which a hydraulic pump is driven by an electric motor.

DESCRIPTION OF SYMBOLS 1 Garbage collection vehicle 2 Chassis 3 Dust storage box 4 Dust input box 6 Opening / closing door 6a Lower end of opening / closing door 7 Loading port 8 Dust loading device 45 Hydraulic cylinder 50 Work light 80 Operation switch 84 Confirmation switch 100 Control device

Claims (4)

A dust collection vehicle comprising a dust storage box mounted on a chassis and a dust input box having an input port into which dust is input and connected to the dust storage box,
An open / close door that opens the input port by moving above the input port of the dust input box and closes the input port by moving toward the input port;
A control device for controlling the lifting operation of the door,
In response to an instruction to open the opening / closing door halfway, the control device opens and closes the opening / closing door so that the lower end is positioned at a position lower than the height of the lower end of the opening / closing door when the opening / closing door is in the fully open position. A garbage truck that is configured to raise the door.   The control device is configured to raise the opening / closing door so that the lower end is positioned at a height of 1/3 or less of the height of the lower end of the opening / closing door when the opening / closing door is in the fully open position. The garbage truck according to claim 1.   The garbage truck according to claim 1 or 2, further comprising a confirmation switch for sending the instruction to the control device.   The refuse collection vehicle according to claim 3, further comprising a work light provided in the dust throwing box and lit when the confirmation switch is operated.

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