JP5090061B2 - Dust input box for garbage truck - Google Patents

Description

  The present invention relates to a dust collection box of a garbage collection vehicle, and more particularly to a door opening / closing mechanism of a dust collection box.

  The refuse collection vehicle is equipped with a dust storage box for containing collected dust, and a dust input box is continuously provided behind it. The dust thrown into the dust throwing box is loaded toward the dust storage box by the dust loading device provided in the dust throwing box.

  A dust inlet is provided on the rear side of the dust input box, and dust, sewage, etc. are scattered from the inside of the dust input box to the outside during the operation of the dust collector. The door is provided so that it may not (for example, refer patent document 1).

  In the garbage throwing box disclosed in Patent Document 1, a door that opens and closes the dust throwing opening by sliding up and down is provided at the dust throwing opening. Therefore, when the door is slid downward, the dust inlet is closed, and when the door is slid upward, the dust inlet is opened. When opened, the door is concealed and housed behind the upper cover (the cover in which the tail lamp and the like are embedded) on the rear surface of the dust box main body.

  The door that opens and closes the dust inlet as described above requires a force to lift the door against the weight of the door when opening the door, and the door does not drop suddenly due to its own weight when closing the door. Thus, a force to gently lower the door while supporting the weight of the door is required. For this reason, the opening / closing operation of the door of the dust box has been a heavy burden on the operator.

  Therefore, the applicant of the present application has developed an assist mechanism for reducing the burden on the worker, and has filed a patent application (Japanese Patent Application No. 2006-93876) relating to a dust box equipped with the assist mechanism. The dust input box of the garbage truck equipped with this assist mechanism will be described below.

  FIG. 8A is an inner side view of the dust box. The dust box includes a pair of left and right side plates 31 (hereinafter, the left side is omitted in the drawing), upper and lower guide rails 32 and 33 provided on each side plate 31, a door 34, and the like.

  The left and right side plates 31 are connected to each other by a support member (not shown) installed in the vehicle width direction, and constitute a frame that supports the door 34, the guide rails 32 and 33, the assist mechanism, and the like.

  The upper guide rail 32 and the lower guide rail 33 are rails having a U-shaped cross section, and rollers 35 attached to both upper side portions of the door 34 are fitted into the upper guide rail 32 so as to be able to roll. The lower guide rail 33 is fitted with rollers 36 attached to both sides of the lower portion of the door 34 so as to be able to roll.

  The door 34 slides up and down on a substantially arc-shaped track along the guide rails 32 and 33. When the door 34 is slid downward, the dust inlet is closed, and when the door 34 is slid upward, the door 34 is provided with a cover 37 ( The cover 37) in which a tail lamp or the like is embedded is concealed and accommodated.

  Next, the assist mechanism for the door 34 will be described. FIG. 8B is a plan view as viewed in the direction of arrow B in FIG. 8A, and shows a mechanism portion by the side plate 31, the arm 38, and the tension coil spring 39. FIG. 9 is a cross-sectional view taken along the line AA in FIG. 8A, and shows a mechanism portion including the side plate 31, the arm 38, the tension coil spring 39, the slider 40, the door 34, and the upper guide rail 32. FIG. 10 is a schematic diagram showing the operation of the assist mechanism as seen from the direction of arrow B in FIG. Each figure shows a common orthogonal three-axis XYZ.

  As shown in FIGS. 8 and 9, the assist mechanism includes an arm 38, a slider 40, a tension coil spring 39, and the like.

  The base end side of the arm 38 is fixedly supported on the side plate 31 via a Y-axis pin joint 38a having an axial core disposed in the Y-axis direction and a Z-axis pin joint 38b having an axial core disposed in the Z-axis direction. . The Z-axis pin joint 38b is arranged closer to the side plate 31 than the Y-axis pin joint 38a. On the other hand, the distal end side of the arm 38 is connected to a slide unit 40b, which will be described later, via a Y-axis pin joint 38c having an axis arranged in the Y-axis direction and a Z-axis pin joint 38d having an axis arranged in the Z-axis direction. Has been. The Z-axis pin joint 38d is arranged closer to the slide unit 40b than the Y-axis pin joint 38c. With this configuration, the arm 38 can swing in two directions around the Y axis and the Z axis.

  The slider 40 includes a slide shaft 40a and a slide unit 40b. The slide shaft 40a is composed of a straight shaft member (hollow shaft member) having a circular cross section, and its longitudinal direction is arranged in the vehicle width direction (X-axis direction), and is fixed near the center of the rear upper surface of the door 34. Yes. The slide unit 40b includes a cylindrical part 40c and a connecting pin 40d coupled to the cylindrical part 40c. The cylindrical portion 40c is fitted on the slide shaft 40a so as to be slidable along the longitudinal direction of the slide shaft 40a and to be rotatable in the outer peripheral direction of the slide shaft 40a. The connecting pin 40d protrudes from the outer peripheral surface of the cylindrical portion 40c so that the axial direction is orthogonal to the longitudinal direction of the slide shaft 40a. The connection pin 40d also serves as the connection pin of the above-described Z-axis pin joint 38d.

  At both ends of the tension coil spring 39, hooks 39a and 39b are formed. These hooks 39a and 39b are provided with a ring 31b fixed to a spring hooking portion 31a provided on the side plate 31 above the base end of the arm 38 so that the amount of spring deflection can be adjusted, and both legs are rigidly connected to the arm 38. It is latched in the hole 38f of the bridge-shaped spring latching portion 38e. The tension coil spring 39 always generates tension regardless of the position of the door 34.

  Next, the operation of the assist mechanism will be briefly described with reference to FIG. In FIG. 10, a connection point 41 is a Y-axis and Z-axis rotation point, and a connection point 42 is a Y-axis and Z-axis rotation and an X-direction movement point. FIG. 10A shows a state where the door 34 is closed. FIG. 10C shows a state where the door 34 is open. FIG. 10B shows the same state as FIGS. 8 and 9 with the door 34 positioned at a position slightly lower than the middle.

  10 (a) to 10 (c), the arms 38, 38 are moved upwardly with the connecting points 42, 42 centered on the connecting points 41, 41 by the tensile force of the tension coil springs 39, 39. A force for rotating in the (Y direction) works, and the arm 38 generates assist forces P and P for pulling the door 34 upward at the connection points 42 and 42.

Therefore, when the door 34 is lifted from the closed state (see FIG. 10A) or when the door 34 is opened from the closed state (see FIG. 10C), the door 34 is closed gently. The support force required for the operation is greatly relaxed, and the burden on the operator when opening and closing the door 34 is greatly reduced.
JP 2005-314061 A

  As is clear from the above description, the assist mechanism has a large number of sliding portions. In order to always operate the assist mechanism normally, maintenance such as inspection of the sliding portion and replenishment of the lubricant to the sliding portion is indispensable. In addition, inspection and replacement of important parts such as the tension coil spring 39 are indispensable.

  However, the slider 40 of the assist mechanism, the sliding portions such as the pin joints 38a to 38d, the tension coil spring 39, and the like are provided in a dark place hidden from the appearance, such as the back side of the door 34 or the back side of the cover 37. When an operator performs maintenance, he / she has to put his / her head or body into the litter slot and illuminate the area to be inspected with a flashlight. It was.

  The present invention has been made in view of the above problems, and is intended to facilitate maintenance of an assist mechanism in a dust collection box of a garbage collection vehicle provided with an assist mechanism that applies an assist force to a door of a dust collection opening. An object is to provide a garbage collection box for a garbage collection vehicle.

As means for solving the above-mentioned problems, the dust box of the garbage truck of the present invention is configured as follows. In other words, the dust input box of the dust collection vehicle of the present invention opens and closes the dust input port provided on the rear surface of the dust input box, and when the door is opened, the dust input box is located on the back side of the cover provided on the upper rear surface of the dust input box. A door provided so that all or part of the dust can be concealed, a guide rail provided from the lower end on both sides of the dust inlet to the upper end, and a guide rail provided on both sides of the lower end of the door. A door opening / closing arm whose one end is rotatably supported on the outer side surface of the side plate of the dust throwing box and whose other end is rotatably connected to both sides of the upper end of the door, One end side is higher than the one end side support point of the door opening / closing arm on the outer side surface of the dust bin so that the other end side of the door open / close arm is pivoted upward about the support point on the one end side. Located and connected, the other end is the door Becomes a biasing member coupled to one end support point side of the closed arms, the door to so that is housed on the back side of the cover during opening of the dust inlet, one end dust turned box door closing arm is supported in the height direction substantially middle portion of the outer surface the front end of its other end, characterized in Rukoto is moved along the rear surface of the cover as viewed from the side of the dust-up box.

Further, in the above-described configuration, the dust container of the garbage truck according to the present invention is configured such that a door cover that is disposed on an outer surface of the dust container and a side cover that covers the urging member is fixed to the dust container so as to be freely opened and closed. It may be.

Further, dust-up box refuse collection vehicles of the present invention, in the above Ki構 formed, together with the side cover is openably connected via a hinge member to the dust-up box, the cover fastening member to dust turned boxes It is preferable that it can be fixed via.

According to the dust box of the garbage truck of the present invention having the above-described configuration, the assist force acts on the door, so that the operator can open and close the door with a light force. Moreover, since the sliding part etc. which require a maintenance are arrange | positioned at the side part of a refuse throwing-in box, an operator can perform a maintenance easily with an easy posture. Moreover, the assist force acting on the door is stable from the fully closed state to the fully open state, and the door can be easily opened and closed.

  According to the garbage collection box of the garbage collection vehicle of the present invention, since the sliding portion or the like that requires maintenance is arranged on the side of the dust collection box, the operator can easily perform maintenance with an easy posture. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a left side view of the garbage truck 1, FIG. 2 is a plan view of the garbage truck 1, and FIG. In the illustrated garbage collection vehicle 1, a driver's seat 3 is disposed in the front part of a vehicle frame 2, a dust storage box 4 is mounted on the rear side thereof, and a dust input box 5 is connected to the rear side of the dust storage box 4. ing.

  FIG. 4 is an enlarged view of the left side surface of the dust box 5, and is a view in which the side cover 5 c that covers the side surface of the dust box 5 is omitted. A dust input port 5a is provided below the rear surface of the dust input box 5, and a well-known dust loading device (not shown) is provided in the dust input box 5. The dust thrown in from the dust throwing port 5a is loaded on the dust container 4 side by the dust loading device. The dust inlet 5a is provided with a door 6 that opens and closes the dust inlet 5a by raising and lowering in order to prevent dust, sewage, and the like from scattering from the dust inlet box 5 during traveling. This door 6 is provided so as to be concealed and housed on the back side of a cover (a cover in which a tail lamp, a stop lamp, etc. are embedded) 5b provided on the upper rear surface of the dust input box 5 when opened. In the present embodiment, the door 6 is provided so that most of the door 6 is concealed and accommodated on the back side of the cover 5b when opened, but the entire door 6 is concealed and accommodated on the back side of the cover 5b. It may be provided so that only a part of the door 6 is concealed and accommodated on the back side of the cover 5b.

<About the door opening and closing mechanism>
The door 6 has an outer shape substantially corresponding to the opening shape of the dust input port 5a. For example, a curved thin plate material harmonizing with the rear shape of the dust input box 5, and a reinforcement fixed on the back surface of the thin plate material. It consists of a frame. As shown in FIG. 5 and FIG. 6, guides 6 a that move along guide rails 8 to be described later are provided on both sides of the lower end of the door 6 , and doors to be described later are provided on both sides of the upper end of the door 6. A connecting shaft 6c that is connected to the open / close arm 13 and protrudes horizontally to the side is provided.

As shown in FIG. 5 and FIG. 6, the guide 6 a provided on both sides of the lower end of the door 6 together with a pair of left and right guide rails 8 constitutes a guide mechanism that guides the opening and closing track of the door 6. The guide rails 8 are fixed on both sides of the dust inlet 5 a along the curved rear edge of the side plate 7 of the dust inlet box 5. It suffices that the guide rail 8 is within the range of movement of the guide 6a provided on both sides of the lower end of the door 6 . Therefore, in this embodiment, the guide rail 8 only needs to be provided from the lower end to the upper end on both the left and right sides of the dust inlet 5a, and it is necessary to provide the guide rail 8 at a position higher than the dust inlet 5a. Absent.

  As shown in FIG. 7, the guide rail 8 is constituted by a rail having a U-shaped groove, for example, and the guide 6 a is arranged in the vehicle width direction constituting the lower end portion of the door 6, for example. The door frame 6b includes a roller that is rotatably provided and protrudes laterally, and the roller is fitted into the groove of the guide rail 8 so as to be rotatable. One guide 6a is provided on each side of the lower end of the door 6. However, the number of guides 6a is increased, and a plurality of guides 6a are installed on both sides of the door 6 at intervals in the vertical direction. May be. The installation location of the guide 6a is preferably on both sides of the lower end of the door 6. However, if the guide 6a is below a connecting point 13X between the door 6 and a door opening / closing arm 13 described later, the lower end of each side of the door 6 is lower. It is also possible to install in other places.

  Since the door opening / closing mechanism includes a stopper mechanism that fixes the door 6 to the guide rail 8 at the fully closed position and the fully open position, the stopper mechanism will be briefly described.

  As shown in FIGS. 6 and 7, the stopper mechanism includes a stopper body 10 provided so as to be able to protrude from the guide 6a toward the guide rail 8, and in the groove of the guide rail 8 near the start end and the end of the guide rail 8. It is comprised by the locking holes 8a and 8b (refer FIG. 4) etc. which were provided in this. When the lever (not shown) attached to the handle 11 is gripped by the operator when the door 6 is fully opened and fully closed, a stopper connected to the lever via the wire 12 so as to be interlocked with the lever operation. The main body 10 is immersed in the guide 6a (on the side opposite to the guide rail 8), the lock is released, and the door 6 can be freely raised and lowered by the operator.

  On the other hand, when the operator opens the lever, the stopper main body 10 is guided by the spring 10a urging the stopper main body 10 toward the guide rail 8 (lock side) when the door 6 is fully opened and fully closed. It protrudes from the end face of the child 6a to the guide rail 8 side and fits into the locking hole 8a or 8b of the guide rail 8, and the door 6 is fixed to the guide rail 8 so that it cannot move up and down.

<About the door assist mechanism>
Next, an assist mechanism that assists in opening and closing the door 6 will be described. The assist mechanism is a mechanism for generating an assist force in the lifting direction with respect to the door 6 so that the operator can raise and lower the door 6 with a small force.

  The assist mechanism includes a door opening / closing arm 13, a biasing member 14, and the like.

The door opening / closing arm 13 is pivotally supported at one end (one end side) on the outer surface of the side plate 7, which is the side surface of the dust box 5, and the other end (other end side) of the door 5 . The side part is rotatably connected. A reinforcing plate 13 a that reduces the bending stress of the bent portion of the door opening / closing arm 13 is fixed to the bending portion of the door opening / closing arm 13. Further, the illustrated door opening / closing arm 13 is formed in a dogleg shape so as to avoid interference with the work handle 15 provided on the side plate 7, but the shape of the door opening / closing arm 13 is not limited thereto. .

  The urging member 14 is configured such that the other end portion 13X side of the door opening / closing arm 13, that is, the connecting point 13X side of the door opening / closing arm 13 with the door 6 rotates upward about the support point 13Y of one end portion of the door opening / closing arm 13. The side plate 7 and the door opening / closing arm 13 are connected so as to be dynamically urged (bias counterclockwise in the figure).

  For example, the urging member 14 includes the tension coil spring 14, and one end (one end side) of the biasing member 14 is above the support point 13 </ b> Y on the one end side of the door opening / closing arm 13 on the outer surface of the side plate 7 of the dust throwing box 5. It is fixed by being hooked to a hooking portion 17 installed on the same surface via a tension adjusting means 16. The other end portion (the other end side) of the tension coil spring 14 is connected to the door opening / closing arm 13 via a spring engaging portion 13 b fixed to the door opening / closing arm 13. Here, the place where the other end portion of the tension coil spring 14 is connected to the door opening / closing arm 13 may be closer to the support point 13Y than the center of the door opening / closing arm 13, and preferably, as shown in the figure, the support point The distance between 13Y and the connecting portion of the other end of the tension coil spring 14 is, for example, 1/3 or less of the rotation radius of the door opening / closing arm 13 (the linear distance between the support point 13Y and the connecting point 13X of the door 6). To.

  The tension adjusting mechanism 16 is for adjusting the amount of bending of the tension coil spring 14. Further, the tension coil spring 14 is installed so as to generate tension even when the door 6 is fully opened, and the tension coil spring 14 always has a pulling force acting on the door 6 regardless of the position of the door 6. 14 natural lengths, deflection amounts, arrangements, and the like are defined.

The operation of the assist mechanism of the door 6 described above will be described. When the door 6 is changed from the closed state to the open state, the operator holds the lever of the handle 11 to release the lock between the door 6 and the guide rail 8 and pulls the door 6 together with the handle 11 upward. At this time, the door opening / closing arm 13 is urged by the tension coil spring 14 in a direction in which the connecting point 13X side of the door opening / closing arm 13 and the door 6 rotates upward, and this urging assists the door 6 to be pulled up. Acts as a force. As a result, the force required to lift the door 6 required by the operator is reduced.

On the other hand, when the door 6 is changed from the open state to the closed state, the operator holds the lever of the handle 11 to release the lock between the door 6 and the guide rail 8 and pushes down the door 6 together with the handle 11. Also at this time, the door opening / closing arm 13 is urged by the tension coil spring 14 in the direction in which the connecting point 13X side of the door opening / closing arm 13 and the door 6 rotates upward. It acts as an assisting force to support it not to lower. As a result, the force required to support the door 6 required by the operator is reduced.

Incidentally, as described above, the tension coil spring 14 is connected to the support point 13Y toward one end side of the door opening and closing arm 13. Therefore, the change in the amount of bending of the tension coil spring 14 between the fully closed state and the fully open state of the door 6 is reduced, and as a result, the assist force (pulling force) acting on the door 6 is fully opened from the fully closed state. It is stable over the state and the door 6 can be easily opened and closed.

  In addition, as shown in FIGS. 1-3, the side cover 5c which can be opened and closed is provided in the side surface of the dust input box 5 in which the said assist mechanism etc. are provided. The side cover 5c is provided to protect the assist mechanism or the like installed on the side surface from sand, mud, dust, sunlight, etc., or to prevent an operator's hand, clothes, etc. from getting caught in the machine. It has been. The front end portion of the side cover 5c is rotatably connected to the front side end portion of the side wall of the dust bin 5 and a hinge member 21 such as a hinge. That is, the side cover 5c opens and closes by rotating around the hinge member 21 (see the two-dot chain line in FIG. 2). Further, when the side cover 5 is closed, a cover fastening bracket (fastener) 22 for fastening the rear end portion of the side cover 5c and the rear side portion of the dust box 5 to which the rear end portion is joined is provided on the side. The cover 5 and the dust box 5 are separable.

<Maintenance of assist mechanism>
Hereinafter, maintenance of the assist mechanism and the like will be described.

  When maintaining the assist mechanism or the like, first, the cover fastening bracket 22 is released, and the side cover 5c is opened. And the location which should be inspected provided in the side surface of the dust input box 5 is inspected. For example, the support point 13Y of the door opening / closing arm 13, the connection point 13X between the door opening / closing arm 13 and the door 6, the tension coil spring 14 and the like are inspected.

  The support point 13Y and the connection point 13X are visually inspected for lubrication by the operator. When the lubricating oil has run out, the lubricating oil is supplied by the operator.

  The tension coil spring 14 is inspected for the tension state of the tension coil spring 14 and the presence or absence of damage. When the tension state is loose, the tension adjusting means 16 adjusts the tension of the tension coil spring 14 to an appropriate value.

  In the refuse collection box 5 of the garbage collection vehicle 1 according to the embodiment of the present invention, all the parts to be maintained are present on the side surfaces of the dust collection box 5, so that the inspection operator can easily perform with an easy posture. It can be inspected and can be easily repaired and replaced.

  Further, in the garbage truck described in the conventional example, the four corners of the door are guided by the guide rail, but in the garbage truck 1 according to the embodiment of the present invention, only the lower side of the door 6 is Since it is guided by the guide rail 8 and does not require the guide rail 8 to be guided on the upper side of the door 6, it is not necessary to provide the guide rail 8 at a high position as in the case of the dust bin according to the conventional example. As a result, the inspection operator only needs to inspect the lubrication state of the guide rail 8 located at a relatively low position, and can easily perform the inspection operation.

  In the above description, the drawings referred to exemplify the rotary garbage collector. However, the present invention is not limited to the dust container of the rotary garbage collector, but the dust container of the press garbage truck. Of course, the present invention can also be applied.

  The present invention can be applied to a dust box of a garbage truck.

It is a left view of the garbage truck which concerns on embodiment of this invention. It is a top view of the garbage truck which concerns on embodiment of this invention. It is a rear view of the garbage truck which concerns on embodiment of this invention. It is a left view of the dust input box of the garbage truck which concerns on embodiment of this invention. The side cover is omitted. FIG. 4 is a rear view of a dust box of the garbage truck according to the embodiment of the present invention, and is a diagram showing only the left side in detail. It is the C section enlarged view of FIG. It is BB sectional drawing of FIG. (A) is a figure which shows the inner surface of the refuse input box described in the prior application of the present applicant. (B) is a B arrow top view of (a). It is AA sectional drawing of Fig.8 (a). It is a schematic diagram which shows operation | movement of the assist mechanism described in the prior application of the present applicant.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust collection truck 5 Dust input box 5a Dust input port 6 Door 6a Guide 8 Guide rail 13 Door opening / closing arm 13Y Support point 13X Connection point 14 Tension coil spring (biasing member)

Claims (3)

A door provided so that a part or all of it is concealed and housed on the back side of the cover provided at the upper part of the rear face of the dust input box when the dust input opening provided on the rear face of the dust input box is opened and closed. A guide rail that extends from the lower end to the upper end on both the left and right sides of the dust inlet, a guide that is provided on both sides of the lower end of the door and moves along the guide rail, and one end side is a dust input box A door opening / closing arm pivotally supported on the outer surface of the side plate and having the other end pivotally connected to both sides of the upper end of the door, and the other end of the door opening / closing arm is a support point on one end thereof. One end side is connected to the outer side surface of the dust throwing box above the one end side support point of the door opening / closing arm and the other end side is connected to the door opening / closing arm. Energizing connected to one end side support point It and a timber, the door to so that is housed on the back side of the cover during opening of the dust inlet, one end of the door closing arm is supported in the height direction substantially middle portion of the outer surface the front end of the dust-on box Te, dust-on box refuse collection vehicles whose other end is characterized Rukoto is moved along the rear surface of the cover as viewed from the side of the dust-up box. 2. A dust container for a garbage truck according to claim 1, wherein a door cover that covers a door opening / closing arm and an urging member disposed on an outer side surface of the dust container is fixed to be openable and closable . 3. The garbage collection vehicle according to claim 2 , wherein the side cover is connected to the garbage input box through a hinge member so as to be openable and closable, and can be fixed to the dust input box through a cover mounting bracket. Trash box.

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