JP7383547B2 - Garbage collection vehicle and garbage collection device - Google Patents

Description

The present invention relates to a garbage collection vehicle that collects and transports garbage. The present invention also relates to a garbage collection device which is a main component of a garbage collection vehicle.

A garbage collection truck 100 is known as a device that collects general garbage discharged from households, raw garbage discharged from restaurants, etc.
The garbage collection vehicle 100 has a garbage collection device 11 mounted on a vehicle body 10 as shown in FIG. 1(a).
The garbage collection device 11 includes a garbage storage box 12 for storing garbage and a garbage input box 13. The garbage storage box 12 is a box with an opening at the rear end of the vehicle body 10, as shown in FIG. That is, the garbage input box 13 covers the garbage storage box 12 as shown in FIGS. It is formed.
The garbage input box 13 includes a garbage input space 16 into which garbage is input, as shown in FIG. 18 are built-in.

The loading device 18 is called a "press type loading device" and has a structure in which a slide plate (slider) 20 and a pushing plate (pushing member) 21 are combined, as shown in FIGS. 2 and 3. belongs to.
The slide plate 20 is a member that moves up and down diagonally, and moves in a direction that has a vertical component.
A push plate 21 is provided at the tip of the slide plate 20. The push plate 21 is a member that swings in the longitudinal direction of the vehicle body around the swing shaft 23 .

While the garbage collection vehicle 100 is running, the loading device 18 is in a dormant state with the hydraulic pump etc. stopped, and the slide plate 20 and the push plate 21 are in the preparation posture as shown in FIG. 4(a). It has become.
When collecting garbage, the hydraulic pump is activated to operate the slide plate 20 and the push plate 21, and a series of loading operations are performed.
That is, the loading operation is composed of a "reversal process," a "descending process," a "compression process," and an "ascending process."
The "reversal step" is a step in which the push plate 21 is swung rearward (towards the rear of the vehicle body) as shown in FIG. 4(b) from the preparation position shown in FIG. 4(a).
Subsequently, as shown in FIG. 4(c), a lowering step of lowering the slide plate 20 is performed.
Further, as shown in FIG. 4(d), a compression step is performed in which the pushing plate 21 is swung forward (towards the driver's seat of the vehicle body 10).
Further, as shown in FIG. 4(e), a raising step is performed to raise the slide plate 20.

In the loading device 18, the pushing plate 21 is opened to the slide plate 20 by about 180 degrees or more by performing a reversing process, and in this position, the slide plate 20 is lowered (lowering process), and Insert the plate 21 into the garbage input space 16. In this state, the pressing plate 21 is rotated clockwise as shown in FIG. 4(d) during the compression process to scoop up the garbage 7. After that, the slide plate 20 is raised by a rising process, and the push plate 21 with the garbage 7 scooped up is pulled up, and the garbage 7 is sent into the garbage storage space 15 and pushed.

Japanese Patent Application Publication No. 2016-183015

One of the most frequently occurring problems with garbage collection vehicles is the problem of abnormal noise. Patent Document 1 also aims to solve this problem.
An object of the present invention is to suppress the generation of abnormal noise by using a different measure from that of Patent Document 1.
Specifically, when performing the above-described series of loading operations, an abnormal noise may occur immediately after the start of the lowering process.
The inventors investigated and found that abnormal noises are frequently generated during the first loading operation from a resting state.
The present invention is based on the above-mentioned knowledge, and an object of the present invention is to develop a garbage collection vehicle and a garbage collection device that can suppress abnormal noises that occur immediately after the start of the descent process.

A mode for solving the above-mentioned problems is a garbage collection vehicle that includes a vehicle body and a garbage collection device mounted on the vehicle body, and the garbage collection device includes a garbage storage box for storing garbage, and a loading/unloading box. The loading device carries out a loading operation of sending garbage into the garbage storage box, and the loading device includes a slider that moves in a direction having a vertical component, and a slider that moves in a direction having a vertical component; It has a pushing member that is attached to the vehicle body and swings in the longitudinal direction of the vehicle body to change its posture, and a lifting cylinder that drives the slider, and the lifting cylinder is pressurized when moving the slider in the upward direction. The loading device has a rising side port, and the loading device is capable of taking a preparation posture in which the slider is in the rising position and the pushing member is in a forward posture, and the loading operation is performed in the preparation posture. a reversing step of swinging the pushing member backward from the state; a descending step of lowering the slider; a compression step of swinging the pushing member forward; and a rising step of raising the slider. A garbage collection vehicle, which is carried out sequentially, is capable of carrying out a temporary pressurization step of temporarily pressurizing the rising side port between the preparation position and the lowering step. It is.

According to the garbage collection vehicle of this embodiment, the frequency of occurrence of abnormal noise immediately after the start of the descent process, which has been a problem in the past, has been significantly reduced.
The exact cause of the abnormal noise is unknown, but we can infer from the phenomenon that when the loading device is at rest, the pressure inside the lifting cylinder tends to be negative due to the influence of gravity, and there is some kind of pressure abnormality in the hydraulic system. This is expected to have caused pressure changes and waves when driving the lifting cylinder.
It is expected that the pressure abnormality in the hydraulic system will be resolved by pressurizing the ascending side port of the elevating cylinder prior to the descending process as in this embodiment.
In any case, by adopting this embodiment, the frequency of occurrence of abnormal noises was significantly reduced.

In the above aspect, it is preferable that the temporary pressurizing process is started in the state of the preparation posture, and then the reversing process is started.

By adopting this aspect, the frequency of occurrence of abnormal noises was significantly reduced.

In each of the above-described aspects, it is desirable that the temporary pressurization step is performed when the loading device returns from the rest state and performs the loading operation.

By adopting this aspect, the frequency of occurrence of abnormal noises was significantly reduced.

In each of the above embodiments, it is possible to operate in a continuous operation mode in which the loading operation is repeated, and in the continuous operation mode, the temporary pressurization step is performed during the first loading operation, and from the second time onwards, the It is desirable to omit the temporary pressurization step in whole or in part.

Even if the temporary pressurization process was not performed during the second and subsequent loading operations, no noticeable problems occurred.

The garbage collection device is a garbage collection device mounted on a vehicle body, and includes a garbage storage box for storing garbage, and a loading device, and the loading device performs a loading operation of feeding the garbage into the garbage storage box. The loading device includes a slider that moves in a direction having a vertical component, a pushing member that is attached to the slider and swings in the longitudinal direction of the vehicle body to change its posture, and the slider. The lifting cylinder has a rising side port that is pressurized when the slider is moved in the rising direction, and the loading device has a lifting cylinder that drives the slider when the slider is in the rising position. In addition, it is possible to take a preparation position in which the pushing member is in a forward facing position, and the loading operation includes an inversion step of swinging the pushing member backward from the ready position, and a reversing step of swinging the pushing member backward from the state of the preparation position. In a dust collection device that sequentially performs a descending step of lowering, a compression step of swinging the pushing member forward, and an ascending step of raising the slider, the period from the preparation posture to the lowering step The garbage collecting device is characterized in that it is possible to carry out a temporary pressurizing step of temporarily pressurizing the rising side port.

By adopting this aspect, the frequency of occurrence of abnormal noises was significantly reduced.

The garbage collection vehicle and garbage collection device of the present invention generate less abnormal noise immediately after starting the lowering process.

2 is a side view of a garbage collection vehicle according to the present invention and the prior art, in which (a) shows a state in which the opening of the garbage storage box is closed with a garbage input box, and (b) shows a state in which the garbage input box is swung to collect garbage. The storage box is shown with its opening open. FIG. 2 is a cross-sectional view of a garbage input box of a garbage collection vehicle according to the present invention and the prior art. FIG. 2 is a perspective view of a main part of a garbage input box of the garbage collection vehicle of FIG. 1; 2 is a cross-sectional view of the garbage input box of the garbage collection vehicle of FIG. 1, in which (a) shows the state in the preparation position, (b) shows the state in which the push plate is swung backward, and (c) shows the state in which the push plate is swung backward. The slide plate is lowered, (d) shows the slide plate inserted into the garbage input space and the pushing plate is rotated to scoop up the garbage, and (e) the slide plate is pulled up to collect the garbage. The state shown is that it has been sent to the box side. It is a hydraulic circuit diagram of the garbage collection device of an embodiment of the present invention, and shows when the garbage collection vehicle is traveling and when the garbage collection device is on standby. It is a hydraulic circuit diagram of the garbage collection device of an embodiment of the present invention, and shows the time of a temporary pressurization process. It is a hydraulic circuit diagram of the garbage collection device of an embodiment of the present invention, and shows the time of a reversal process. It is a hydraulic circuit diagram of the garbage collection device of an embodiment of the present invention, and shows the time of a descent process. It is a hydraulic circuit diagram of the garbage collection device of an embodiment of the present invention, and shows the time of a compression process. It is a hydraulic circuit diagram of the garbage collection device of an embodiment of the present invention, and shows the time of a rising process. It is a flow chart which shows operation in single operation mode of a garbage collection device of an embodiment of the invention. It is a flow chart which shows operation in continuous operation mode of a garbage collection device of an embodiment of the invention.

Embodiments of the present invention will be further described below.
The external shape and mechanical structure of the garbage collection vehicle 1 of this embodiment are the same as those of the prior art.
That is, the garbage collection vehicle 1 of this embodiment has a garbage collection device 11 mounted on a vehicle body 10, as shown in FIG. However, some of the numbering has been changed to distinguish it from the conventional technology.
The garbage collection device 11 is configured by a garbage storage box 12 for storing garbage and a garbage input box 13, as in the prior art.
The garbage storage box 12 is a box with an opening at the rear end of the vehicle body 10, as shown in FIG. That is, the garbage storage box 12 has a large opening at the rear end, and has a structure in which five sides excluding the opening are covered with strong steel plates. In this embodiment, a garbage storage space 15 is formed in the garbage storage box 12.

The garbage input box 13 is attached to the rear end of the garbage storage box 12 by a hinge 19, and a cylinder (not shown) allows the garbage input box 13 to be placed in a position that covers the opening as shown in FIG. 1(a), or as shown in FIG. 1(b). It is possible to take a posture that opens the aperture.
The garbage collection vehicle 1 of this embodiment has a partition wall 17 inside, and similarly to the prior art, a slide plate (slider) 20, a push plate (push member) 21, and a garbage input tank 25 are built therein.
Further, the garbage storage box 12 is provided with side plates 14a and 14b on the left and right sides.

The above-mentioned partition wall 17 has both ends welded to the side plates 14a and 14b as in the previous embodiment, and covers the upper side of the opening when in the posture of covering the opening as shown in FIG. 1(a). .

The garbage input tank 25 is a metal tank with a semicircular bottom, and is arranged below the partition wall 17.

The slide plate (slider) 20 has rollers 26 on its side as shown in FIG. The slide plate (slider) 20 is located on the outer surface of the partition wall 17, and the rollers 26 described above are engaged with rails (not shown), so that the slide plate (slider) 20 can slide diagonally. That is, a portion of the slide plate 20 is engaged with a rail (not shown). Lifting cylinders 30a and 30b are attached between the slide plate 20 and the left and right side plates 14a and 14b, and by expanding and contracting the lift cylinders 30a and 30b, the slide plate 20 moves up and down in an oblique direction.

Further, the push plate 21 is pivoted near the lower end of the slide plate (slider) 20. Swing shafts 23a and 23b of the push plate 21 are located near the lower end of the slide plate 20.
Further, swing cylinders 40a and 40b are attached between the upper portion of the push plate 21 and the slide plate 20. Therefore, when the swinging cylinders 40a, 40b are expanded or contracted, the push plate 21 swings.

The basic operation of the garbage collection vehicle 1 of this embodiment is the same as that of the prior art. That is, the push plate 21 is swung rearward to be in an open position with respect to the slide plate 20, and then the slide plate 20 is lowered and the push plate 21 is inserted into the garbage input tank 25. In this state, the pushing plate 21 is swung forward to scoop up the garbage 7. Thereafter, the sliding plate 20 is raised to lift up the pushing plate 21 with the garbage 7 scooped up, and the garbage 7 is pushed into the garbage storage space 15.

In the dust collection device 11 of this embodiment, the slide plate (slider) 20 rises by operating the lifting cylinders 30a, 30b in the extension direction, and slides by operating the lifting cylinders 30a, 30b in the contraction direction. The plate (slider) 20 descends.
Therefore, in the lifting cylinders 30a and 30b, as shown in FIGS. 2 and 5 to 9, the bottom side port becomes the rising side port 31, and the rod side port becomes the descending side port 32.

In the dust collection device 11 of this embodiment, the pushing plate 21 swings forward by operating the swinging cylinders 40a, 40b in the extension direction, and the swinging cylinders 40a, 40b are moved in the contraction direction. This causes the push plate 21 to swing rearward.
Therefore, in the swinging cylinders 40a and 40b, the bottom side port becomes the front swinging side port 41, and the rod side port becomes the rear swinging side port 42.

The hydraulic circuit for operating each cylinder, the operation of the cylinder during each operation, and the operating state of the solenoid valve are shown in FIGS. 5 to 9.
The hydraulic circuit of the garbage collection device 11 includes a hydraulic pump 50, lifting cylinders 30 (30a, 30b), swinging cylinders 40 (40a, 40b), lifting solenoid valve 51, and swinging solenoid valve 52. In reality, check valves, relief valves, etc. are arranged in each part, but these are omitted.

The lifting solenoid valve 51 and the swinging solenoid valve 52 are both 3-position, 4-way solenoid valves, and as is well known, there is a forward position where hydraulic oil passes in the forward direction and a forward position where hydraulic oil passes in the reverse direction. It has a reverse position and a neutral position.
The lifting solenoid valve 51 and the swinging solenoid valve 52 are closed center type solenoid valves, and all ports are closed in the neutral position.

In this embodiment, when the spool is in the forward position, the lifting solenoid valve 51 pressurizes the lifting side ports 31 of the lifting cylinders 30a and 30b. , 30b, the lifting cylinders 30a, 30b contract, and the slide plate (slider) 20 rises. Therefore, in the following description, the state in which the spool of the lifting electromagnetic valve 51 is in the forward direction position will be referred to as the upward direction position. Similarly, the state in which the spool of the lifting solenoid valve 51 is in the reverse direction is referred to as the lowering direction position.

Further, in the present embodiment, when the spool is in the forward position, the front swing side ports 41 of the swing cylinders 40a and 40b are pressurized, and the swing solenoid valve 52 Hydraulic oil is supplied to the swinging cylinders 40a, 40b, the swinging cylinders 40a, 40b contract, and the push plate 21 swings forward. Therefore, in the following description, the state in which the spool of the swinging electromagnetic valve 52 is in the forward position will be referred to as the forward position. Similarly, the state in which the spool of the swinging solenoid valve 52 is in the reverse position is referred to as the backward position.

The garbage collection device 11 of this embodiment has a control device 60 as shown in FIG. It is driven and stopped by the output signal.
The garbage collection device 11 also has an upper detection switch (not shown) that detects that the slide plate (slider) 20 is in the raised position, and a lower detection switch (not shown) that detects that the slider 20 is in the lowered position. .
It also has a front position detection switch (not shown) that detects that the push plate 21 is in the front position, and a rear position detection switch (not shown) that detects that the push plate 21 is in the rear position.
Detection signals from these detection switches are input to the control device 60.

The control device 60 stores a computer program for implementing the operations shown in the flowcharts of FIGS. 11 and 12.
Further, the garbage collection device 11 has a switch group 62.
In this embodiment, the switch group 62 includes a single-time switch 63, a continuous operation switch 65, and a stop switch 66.

Similar to the prior art, the dust collection device 11 of the present embodiment has a reversal process in which the pushing plate 21 is swung backwards as shown in FIG. 4(b) from the ready posture shown in FIG. 4(a). Implement.
Subsequently, as shown in FIG. 4(c), a lowering step of lowering the slide plate 20 is performed.
Further, as shown in FIG. 4(d), a compression step is performed in which the pushing plate 21 is swung forward.
Further, as shown in FIG. 4(e), a raising step is performed to raise the slide plate 20.
The garbage collection device 11 of this embodiment has a characteristic configuration in which the lifting cylinders 30a and 30b are applied in a direction that urges the slide plate 20 in the upward direction for a short time before the first reversal process is performed. be pressured.
That is, before the first reversal process is performed, a temporary pressurization process is performed to temporarily pressurize the rising side port.

Hereinafter, a series of operations of the dust collection device 11 will be explained with reference to the flowcharts of FIGS. 11 and 12 and the piping diagrams of FIGS. 5 to 10.
In the garbage collection vehicle 1 of this embodiment, when it is traveling or when the garbage collection device 11 is in preparation, the loading device 18 is in a dormant state. This rest state is a state in which the hydraulic pump 50 or the like is stopped, or the hydraulic pump 50 is driven and discharges hydraulic oil, but the hydraulic oil is returned to the oil tank via a relief valve (not shown) or the like. This refers to a state in which the hydraulic oil in the lifting cylinder 30 and the swinging cylinder 40 is sealed by the electromagnetic valves 51 and 52, respectively. Further, the slide plate 20 and the push plate 21 described above are in a ready posture as shown in FIG. 4(a). That is, the slide plate 20 is at the upper end position, and the push plate 21 faces forward.
The swing cylinders 40a, 40b are in an extended state. The lifting cylinders 30a and 30b are in an extended state because the slide plate 20 is stopped at the upper end position.
As shown in FIG. 5, the lifting solenoid valve 51 and the swinging solenoid valve 52 have their spools in the neutral position. Therefore, the swing cylinders 40a, 40b are stopped in an extended state, and the lifting cylinders 30a, 30b are also stopped in an extended state.

The garbage collection device 11 can select between a single operation mode and a continuous operation mode. The single-time operation mode is an operation mode in which the loading operation is performed only once. In the independent operation mode, each device operates based on the flowchart in FIG.
When operating in the single-time operation mode, the single-time switch 63 is turned on.
That is, in step 1, an ON signal from the single-time switch 63 is waited for, and when the single-time switch 63 is turned on, the process proceeds to step 2, where the hydraulic pump 50 is driven.

In step 3, as shown in FIG. 6, the lifting solenoid valve 51 is switched from the neutral position to the upward position. As a result, the ascending ports 31 of the ascending and descending cylinders 30a and 30b are pressurized via the ascending and descending electromagnetic valves 51, and a temporary pressurization process is carried out.
Here, as described above, when the garbage collection device 11 is in preparation, the slide plate 20 is at the upper end position and the lifting cylinders 30a and 30b are in an extended state.
In the dust collection device 11 of this embodiment, even though the lifting cylinders 30a, 30b are already in the extended state, before the slide plate 20 descends, the lifting side ports 31 of the lifting cylinders 30a, 30b are opened again. Pressurized.
Since the lifting cylinders 30a and 30b are already fully extended as shown in FIG. 4(a), in most cases, even if the rising port 31 is pressurized as shown in FIG. None. Of course, it is conceivable that hydraulic oil may flow.
It is expected that this pressurization (temporary pressurization process) will normalize the pressure balance between the lifting cylinders 30a and 30b.

The temporary pressurization process only takes a very short time. In reality, less than 1 second is sufficient.
In step 4, a minute time elapses, and when the time elapses, the process proceeds to step 5, in which the lifting solenoid valve 51 is returned to the neutral position.

In the subsequent step 6, as shown in FIG. 7, the swinging solenoid valve 52 is switched to the backward position. As a result, as shown in FIG. 4(b), a reversing process is performed in which the pushing plate 21 swings rearward.
When it is confirmed in step 7 that the push plate 21 has reached the retracted position, the process moves to step 8, and the swinging solenoid valve 52 is switched to the neutral position.

Then, the process moves to step 9, and as shown in FIG. 8, the lifting solenoid valve 51 is switched to the lowering direction position. As a result, hydraulic oil flows from the lowering side ports 32 of the lifting cylinders 30a, 30b, the lifting cylinders 30a, 30b contract, and the lowering process of lowering the slide plate 20 is started as shown in FIG. 4(c). Ru.

When it is confirmed in step 10 that the slide plate 20 has descended to a predetermined position, the process moves to step 11, and the lifting electromagnetic valve 51 is switched to the neutral position.

Next, the process moves to step 12, and as shown in FIG. 9, the swinging solenoid valve 52 is switched to the forward position. As a result, a compression process is started in which the pushing plate 21 swings forward as shown in FIG. 4(d).
When it is confirmed in step 13 that the push plate 21 has reached the forward position, the process moves to step 14, and the swinging solenoid valve 52 is switched to the neutral position.

Then, the process moves to step 15, and as shown in FIG. 10, the lifting solenoid valve 51 is switched to the upward position. As a result, hydraulic oil flows from the rising side ports 31 of the lifting cylinders 30a, 30b, the lifting cylinders 30a, 30b extend, and the lifting process of lifting the slide plate 20 is started as shown in FIG. 4(e). .

When it is confirmed in step 16 that the slide plate 20 has risen to a predetermined position, the process moves to step 17, and the lifting solenoid valve is switched to the neutral position (FIG. 5).
Through the above process. The operation in the single-time operation mode ends.

Next, operation in continuous operation mode will be explained. The continuous operation mode is an operation mode in which loading operations are repeated. In the continuous operation mode, each device operates based on the flowchart in FIG.
Even in the continuous operation mode, the temporary pressurization process (steps 3 to 5) is performed, but the temporary pressurization process is performed only during the first loading operation.
The flowchart in the continuous operation mode repeats the steps shown in the flowchart of FIG. 11, but in step 18 at the end of the first loading operation, it is determined whether the stop switch is turned on.
If the stop switch is on, continuous operation is terminated.
If the stop switch is not on, the process moves to step 6, where the swinging solenoid valve is switched to the backward position to start the reversal process, and thereafter, the same process as the single-time operation is carried out.
If the stop switch is turned on during operation in the continuous operation mode, or if the single switch 63 is turned on during operation in the continuous operation mode, the operation will be stopped when a series of loading operations are completed.

In the embodiment described above, the temporary pressurizing process was performed prior to the reversing process, but the temporary pressurizing process may be performed after the reversing process. Further, the reversing step and the temporary pressurizing step may be performed in parallel.
In short, the temporary pressurization step may be performed before the lowering step is started.
In the embodiment described above, the temporary pressurization operation was performed only during the first loading operation in the continuous operation mode, but the temporary pressurization operation may be performed every time. Alternatively, temporary pressurization may be performed at regular intervals.

In the embodiment described above, a configuration is adopted in which the hydraulic pump 50 is started in response to turning on the single-time switch 63 or the continuous-time switch 65 (step 2), but the method of starting the hydraulic pump 50 and the power source are limited. It is not something that will be done.
For example, an independent pump start switch may be provided and the motor of the hydraulic pump 50 may be started by operating the pump start switch.
Alternatively, the power for the hydraulic pump may be derived from the vehicle. That is, a PTO switch may be provided that connects and disconnects the vehicle travel drive source and the hydraulic pump.
Although the swing cylinders 40a and 40b are used as actuators for swinging the push plate 21 in the loading device 18, other actuators (for example, a hydraulic motor) may be used instead.

1 Garbage collection vehicle 11 Garbage collection device 12 Garbage storage box 13 Garbage input box 15 Garbage storage space 16 Garbage input space 18 Loading device 20 Slide plate (slider)
21 Push plate (push member)
30a, 30b Lifting cylinder 31 Lifting side port 40 Swinging cylinder 50 Hydraulic pump 51 Lifting solenoid valve 60 Control device 63 Single time switch 65 Continuous operation switch

Claims (5)

A garbage collection vehicle consisting of a vehicle body and a garbage collection device mounted on the vehicle body, the garbage collection device having a garbage storage box for storing garbage, and a loading device, the loading device comprising: carrying out a loading operation of sending garbage into the garbage storage box,
The loading device includes a slider that moves in a direction having a vertical component, a pushing member that is attached to the slider and swings in the front-rear direction of the vehicle body to change its posture, and a lifting cylinder that drives the slider. have,
The lifting cylinder has a rising port that is pressurized when moving the slider in the rising direction,
The loading device is capable of taking a preparation posture in which the slider is in a raised position and the pushing member is in a forward posture,
The loading operation includes a reversing step of swinging the pushing member backward from a state of preparation, a lowering step of lowering the slider, a compression step of swinging the pushing member forward, and a compression step of swinging the pushing member forward. In a garbage work vehicle that sequentially carries out the raising process of raising the slider,
The garbage collection vehicle is characterized in that a temporary pressurization process can be performed to temporarily pressurize the rising side port during the period from the preparation position to the lowering process. The garbage collection vehicle according to claim 1, wherein the temporary pressurizing step is started in the state of the preparation posture, and then the reversing step is started. The garbage collection vehicle according to claim 1 or 2, wherein a temporary pressurization step is performed when the loading device returns from a rest state and performs the loading operation. It is possible to operate in a continuous operation mode in which the loading operation is repeated, and in the continuous operation mode, the temporary pressurization step is performed during the first loading operation, and from the second time onwards, the temporary pressurization step is completely performed. The garbage collection vehicle according to any one of claims 1 to 3, wherein the garbage collection vehicle is partially omitted. A garbage collection device mounted on a vehicle body, comprising a garbage storage box for storing garbage and a loading device, the loading device carrying out a loading operation of sending garbage into the garbage storage box,
The loading device includes a slider that moves in a direction having a vertical component, a pushing member that is attached to the slider and swings in the front-rear direction of the vehicle body to change its posture, and a lifting cylinder that drives the slider. have,
The lifting cylinder has a rising port that is pressurized when moving the slider in the rising direction,
The loading device is capable of taking a preparation posture in which the slider is in a raised position and the pushing member is in a forward posture,
The loading operation includes a reversing step of swinging the pushing member backward from a state of preparation, a lowering step of lowering the slider, a compression step of swinging the pushing member forward, and a compression step of swinging the pushing member forward. In a garbage collection device that sequentially carries out a raising process of raising a slider,
The garbage collection device is characterized in that a temporary pressurizing step can be performed to temporarily pressurize the ascending side port during the period from the preparation posture to the lowering step.

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