JP2000318803A - Operation control device of collection device in refuse collection vehicle and operation control method of the collection device - Google Patents

Abstract

(57) [Problem] To simplify the operation of switching the drive of a collecting device by an engine and an electric motor, and to surely prevent the generation of engine noise when driven by an electric motor. A first hydraulic pump P1 driven by an engine 13 and a second hydraulic pump P2 driven by an electric motor 18 are accommodated by hydraulic pressure supplied from the first hydraulic pump P1 or the second hydraulic pump P2. An electric motor operation detecting means for operating the device and detecting the operation of the electric motor 18; an engine speed increase preventing means for stopping the speed increase of the engine 13 in accordance with the electric motor operation detection of the electric motor operation detecting means; Power transmission interrupting means for interrupting the driving force from the engine 13 to the first hydraulic pump P1 according to the electric motor operation detection of the electric motor operation detecting means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a garbage truck.
In particular, the present invention relates to an operation control device of a collection device in a refuse collection vehicle and an operation control method of the collection device.

[0002]

2. Description of the Related Art Generally, a refuse collection vehicle is provided with a refuse storage box 1 at the center of the vehicle, for example, as schematically shown in FIG.
An input box 2 is arranged behind the refuse storage box 1.
Further, a collecting device 3 for loading the dust put into the input box 2 from the input port (not shown) into the dust storage box 1 is provided in the input box 2.

The collecting device 3 includes, for example, a rotating plate 5 rotatably supported by a rotating shaft 4 provided in the loading box 2 and extending in the vehicle width direction, and a vehicle width above the rotating shaft 4. A push plate 7 swingably supported by a push plate support shaft 6 provided on the input box 2 along the direction.
, And the pressing plate 7 is oscillated by a pressing cylinder 9.

[0006] The dust put into the input box 2 from the input port is scraped up by a rotary plate 5 driven to rotate by a hydraulic motor 8, and the dust scraped up by the rotary plate 5 is pushed by a pushing cylinder 9. The garbage is pushed into the garbage storage box 1 by the oscillating pressing plate 7.

[0005] A hydraulic pump for supplying hydraulic pressure to actuators such as the hydraulic motor 8 and the other cylinders including the pushing cylinder 9 of the collecting device 3 is generally driven by a traveling engine mounted on a refuse collection vehicle, or The garbage collection vehicle is driven by an electric motor mounted on the vehicle in order to reduce noise during garbage collection work indoors.

A driving method for driving the collection device 3 by driving the hydraulic pump by the traveling engine will be described with reference to a schematic explanatory diagram shown in FIG.

The hydraulic pressure from the hydraulic pump P1 is applied to the hydraulic motor 8
Actuator Control Valves and Hydraulic Pumps P for Switching and Supplying to Actuators such as Push Cylinder 9
1 is a collecting device hydraulic circuit having a drain valve for draining the storage tank T or the like without supplying the hydraulic pressure from the hydraulic motor 8 to an actuator such as the pushing cylinder 9.
1 and a collector electrical circuit 1 for controlling the operation of the collector 3
2, an engine 13, an engine speed increasing device 14 for increasing the speed of the engine 13 based on an instruction from the collecting device electric circuit 12, and a hydraulic pump P1
And a power take-out device 15 for transmitting the power to the motor.

Further, a circuit 21 interposing a main switch SW1 for operating the power take-off device 15 between the vehicle-mounted power supply, for example, the battery 16 and the power take-out device 15
A circuit 22 disposed between the battery 16 and the collector electric circuit 12 having a normally open type relay contact CR1a that is turned on by a relay switch CR1 that operates in conjunction with the ON operation of the main switch SW1; And the engine speed increasing device 1 via the collecting device electric circuit 12.
4, a collector operating switch (not shown) for increasing the rotation speed of the engine 13 and switching the drain valve of the collector hydraulic circuit 11 is provided.

The garbage loading operation is performed by the main switch S.
The power take-off device 15 is operated by turning on W1, and the first hydraulic pump P1 is driven by the engine 13 to supply the hydraulic pressure to the collecting device hydraulic circuit 11.

In this state, the hydraulic pressure supplied to the hydraulic circuit 11 is drained to the storage tank T and the like by the drain valve, and the hydraulic pressure supply to the hydraulic motor 8 and the actuator such as the pushing cylinder 9 is maintained in a stopped state.

Subsequently, the collection device electric circuit 12 is turned on by turning on the collection device operation switch disposed in the input box 2 or the like.
The engine speed-up device 14 is operated via the motor to increase the engine speed, and the drain valve of the collecting device hydraulic circuit 11 is switched so that the hydraulic motor 8 and the pushing cylinder 9
Is supplied with a hydraulic pressure, so that the collection device 3 can be loaded with refuse.

On the other hand, the operation method of the collecting device for driving the hydraulic pump by the electric motor is to switch the hydraulic pressure from the hydraulic pump P2 to the hydraulic motor 8 and the actuator such as the pushing cylinder 9 as shown in FIG. A collection device hydraulic circuit 11 having a drain valve that collects the drain in the storage tank T or the like without supplying the plurality of actuator control valves to be supplied and the hydraulic pressure from the hydraulic pump P2 to the actuator such as the hydraulic motor 8 and the pushing cylinder 9; An electric motor 18 is directly connected to the hydraulic pump P2.

Further, an electric motor operation switch SW2 for operating the electric motor 18 and the collecting device hydraulic circuit 11
The electric motor 18 is supplied by connecting a plug 19 to an outlet (not shown) disposed indoors or the like.

Then, in the garbage loading operation, the second hydraulic pump P2 is driven by the electric motor 18 by turning on the electric motor operation switch SW2, and the hydraulic pressure is supplied to the collecting device hydraulic circuit 11. In this state, the hydraulic pressure supplied to the collecting device hydraulic circuit 11 is drained to the storage tank T or the like by the drain valve, and the hydraulic motor 8 and the pushing cylinder 9 are kept stopped.

Subsequently, by turning on a collection device operation switch provided in the input box 2 or the like, the drain valve of the collection device hydraulic circuit 11 is switched, and the actuators such as the hydraulic motor 8 and the pushing cylinder 9 are operated. Then, the collection device 3 can load the garbage.

Further, there is a versatile refuse collection vehicle in which hydraulic pumps each driven by a traveling engine and an electric motor are provided in parallel, and the pump drive is selectively switched to operate the collection device.

This driving method will be described with reference to FIG. The same reference numerals are given to the portions corresponding to those in FIGS. 3 and 4, and the description of the portions will be omitted, and different portions will be mainly described.

The hydraulic discharge sides of the hydraulic pump P1 driven by the engine 13 and the hydraulic pump P2 driven by the electric motor 18 are connected to each other via a check valve or the like and connected to the hydraulic circuit 11 for the collecting device. .

Further, a first contact SW3a of a manual change-over switch SW3 is interposed between the main switch SW1 of the circuit 21 and the power take-off device 15, and the collecting device electric circuit 1
Switch S between the engine 2 and the engine speed-up device 13
A circuit 23 provided with a second contact SW3b of W3 is provided, and a first contact SW3a and a second contact SW3a of the manual changeover switch SW3 are provided.
The contact SW3b is switched in an interlocked manner.

In order to drive the collecting device 3 by the engine 13, the first contact SW3a and the second contact SW3b of the manual changeover switch SW3 are turned on, and the main switch SW1 is turned on to operate the power take-out device 15. Then, the hydraulic pump P <b> 1 is driven by the engine 13 to supply the hydraulic pressure to the collecting device hydraulic circuit 11.

Subsequently, the collection device electric circuit 1 is turned on by turning on the collection device operation switch disposed in the input box 2 or the like.
The increase in the number of revolutions of the engine 13 is obtained by the engine speed increasing device 14 via the second gear 2, and the drain valve of the collecting device hydraulic circuit 11 is switched to operate the actuators such as the hydraulic motor 8 and the pushing cylinder 9 to collect the collecting device. 3 enables loading of garbage.

On the other hand, when the collection device 3 is operated by driving the second hydraulic pump P2 by the electric motor 18, for example, the plug 19 is connected to an outlet (not shown) provided indoors or the like, and a manual changeover switch is provided. First of SW3
The contact SW3a and the second contact SW3b are turned off, the main switch SW1 is turned on, and the relay switch C is turned on.
The relay contact CR1a of R1 is turned on to supply power to the collection device electric circuit 12.

Subsequently, the O of the electric motor operation switch SW2 is
N operation, the hydraulic pump P2
To supply hydraulic pressure to the collecting device hydraulic circuit 11. In this state, the hydraulic pressure supplied to the collecting device hydraulic circuit 11 is
The drain valve is drained to the storage tank T or the like, and the supply of hydraulic pressure to actuators such as the hydraulic motor 8 and the pushing cylinder 9 is maintained in a stopped state.

Subsequently, by turning on a collecting device operation switch disposed in the charging box 2 or the like, the drain valve of the collecting device hydraulic circuit 11 is switched, and actuators such as the hydraulic motor 8 and the pushing cylinder 9 are operated. Then, the collection device 3 can load the garbage.

[0025]

According to the refuse collection vehicle provided with the hydraulic pump P1 driven by the engine 13 and the hydraulic pump P2 driven by the electric motor 18, the engine 13 can be easily controlled. 1 By driving the hydraulic pump P1, efficient dust collection work is provided. On the other hand, when collecting dust inside a room or the like where quietness is required, the hydraulic pump P2 is driven by the electric motor 18 to operate the collection device 3. By operating, the dust collection work can be performed in a state where noise is extremely suppressed.

However, in switching from the operation of the collection device 3 by the engine 13 to the operation of the collection device 3 by the electric motor 18, or from the drive by the electric motor 18 to the drive by the engine 13, a manual changeover switch is set every time the changeover is performed. SW3 needs to be switched,
The switching operation is complicated and the operation is complicated,
It is assumed that the first contact SW3a and the second contact SW of the manual changeover switch SW3 are erroneously used indoors or the like where quietness is required.
The main switch SW1 is turned on to operate the collection device 3 by the electric motor 18 regardless of whether the 3b is ON.
N, and when the collection device operation switch is turned on, the circuit 2
Since the number 3 is formed, there is a concern that the signal from the collection device collection circuit 12 activates the engine speed-up device 14 to increase the engine speed, thereby causing an increase in noise caused by the engine 13.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention, which has been made in view of the above points, is to simplify the switching operation between the driving of the collecting device by the engine and the driving of the collecting device by the electric motor, and the driving by the electric motor. An object of the present invention is to provide an operation control device of a collection device in a refuse collection vehicle and an operation control method of the collection device, in which generation of noise by an engine at the time is reliably prevented.

[0028]

According to the first aspect of the present invention, there is provided an operation control device for a collection device in a garbage collection vehicle, wherein the garbage put in the input box is loaded into the trash storage box. A first hydraulic pump driven by an engine and a second hydraulic pump driven by an electric motor, wherein the housing device is operated by hydraulic pressure supplied from the first hydraulic pump or the second hydraulic pump. In an operation control device of a collection device in a refuse collection vehicle, an electric motor operation detecting means for detecting an operation of the electric motor, and an engine speed increase preventing the engine from accelerating according to the electric motor operation detection of the electric motor operation detection means. Preventing means; and a first engine from the engine according to the electric motor operation detection of the electric motor operation detecting means.
Power transmission cutoff means for cutting off the driving force to the hydraulic pump.

According to the first aspect of the present invention, the collecting device is operated by the first hydraulic pump by the engine, and the hydraulic pressure supplied to the collecting device hydraulic circuit is adjusted by controlling the engine speed by the engine speed increasing device. In addition to the above, the waste collection work is brought about, and the collection device can be operated by driving the second hydraulic pump by an electric motor in a room or the like where quietness is required. According to the operation detection, the engine speed increase prevention means prevents the engine speed increase, and the power transmission cutoff means cuts off the driving force from the engine to the first hydraulic pump. The simplification of the switching work with the operation of the collecting device by the electric motor and the reliable switching are ensured, Reducing the work load is brought about.

According to a second aspect of the present invention, in the operation control device for the collection device in the refuse collection vehicle according to the first aspect, the electric motor operation detecting means is a relay switch that operates in accordance with power supply to the electric motor. The power transmission cut-off means is a normally-closed first relay contact of the relay switch interposed between the main switch and the power take-off device. The relay switch is a normally closed second relay contact of the relay switch interposed between the device electric circuit and the engine speed increasing device.

According to the second aspect of the present invention, the electric motor operation detecting means, the power transmission interrupting means, and the engine speed-up preventing means are simplified by a relay switch and the first relay contact and the second relay contact of the relay switch. Can be formed by

According to a third aspect of the present invention, there is provided a method for controlling the operation of a collection device in a refuse collection vehicle, comprising: a storage device for loading refuse into a refuse storage box into a refuse storage box; and a first hydraulic pressure driven by an engine. A method of controlling the operation of a collection device in a refuse collection vehicle, comprising a pump and a second hydraulic pump driven by an electric motor, wherein the storage device is operated by hydraulic pressure supplied from the first hydraulic pump or the second hydraulic pump. According to the electric motor operation detection of the electric motor operation detecting means for detecting the operation of the electric motor, the engine speed increase preventing means prevents the engine from increasing in speed, and the power transmission cut-off means controls the transmission from the engine to the first hydraulic pump. The driving force is cut off.

According to the third aspect of the present invention, when the second hydraulic pump is driven by the electric motor, the operation of the electric motor is detected by the electric motor operation detecting means, and the first hydraulic pressure is transmitted from the engine by the power transmission cutoff means in accordance with the detection. Since the driving force to the pump is shut off and the engine speed increase prevention means prevents the engine speed increase, the operation of switching the operation of the collection device by the engine and the operation of the collection device by the electric motor can be simplified and reliably performed. Switching is ensured.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an operation control device of a collection device in a refuse collection vehicle and an operation control method of the collection device according to the present invention will be described below with reference to FIG.

FIG. 1 is an explanatory diagram showing the outline of the present embodiment. For convenience of explanation, the same reference numerals as those in FIG. The parts will be mainly described.

Operation control device 10 in the present embodiment
Has an electric motor operation detecting means for detecting the operation of the electric motor 18 that drives the hydraulic pump P2 serving as the second hydraulic pump. This electric motor operation detecting means is, for example,
It is formed by a relay switch CR2 that is provided to be branched from between the electric motor 18 and the electric motor operation switch SW2 and that is operated by energization.

Further, in a circuit 21 between the battery 16 and the power take-off device 15, a main switch SW1 for operating the power take-off device 15 by energization and a normally closed first relay contact CR2a of the relay switch CR2 are connected in series. The main switch SW1 of the circuit 21 and the first
A relay switch CR1 that branches off from between the relay contact CR2a and is turned on when the main switch SW1 is energized is provided.
1a is disposed in a circuit 22 between the battery 16 and the collector electrical circuit 12.

The first relay contact CR2a is turned off when the relay switch CR2 is energized, and the main switch SW1 is turned off to supply power to the collector electric circuit 12.
N, the power supply from the power take-out device 15 to the first
It functions as a power transmission cutoff unit that cuts off a driving force to the hydraulic pump P1 serving as a hydraulic pump.

Further, the relay switch CR is connected to a circuit 23 between the collecting device electric circuit 12 and the engine speed increasing device 14.
2 normally closed type second relay contact CR2b is interposed,
The relay switch CR2 is turned off and shut off by energizing the relay switch CR2, and forms an engine speed increase prevention means for preventing the speed increase of the engine 13 due to an instruction from the collection device 12.

In the operation control device 10 configured as described above, when the collection device 3 is operated by the engine 13, the electric motor 18 is not operated, that is, there is no power supply to the electric motor 18, and the normally closed type is used. The main switch SW1 is turned on in a state where both the first relay contact CR2a and the second relay contact CR2b of the relay switch CR2 are turned on.

When the main switch SW1 is turned on, the power take-off device 15 is operated, the first hydraulic pump P1 is driven by the engine 13, and the collecting device hydraulic circuit 11 is turned on.
The hydraulic pressure is supplied from the first hydraulic pump P1, and the relay contact CR1a is turned on by the relay switch CR1 to supply power to the collection device electric circuit 12.

Subsequently, by turning on a collecting device operation switch (not shown) disposed in the charging box 2 or the like, the collecting device electric circuit 12 causes the engine speed increasing device 14 to operate.
Operates, the engine 13 is accelerated, and the drain valve of the collecting device hydraulic circuit 11 is switched to operate the actuators such as the hydraulic motor 8 and the pushing cylinder 9 so that the collecting device 3 can perform the dust loading operation. Become.

On the other hand, in order to operate the collecting device 3 by the electric motor 18 indoors or the like, the plug 19 is inserted into an outlet provided indoors or the like, and the electric motor operation switch SW2 is turned on to rotate the electric motor 18. This drives the hydraulic pump P2.

With the ON operation of the electric motor operation switch SW2, each first relay contact C of the relay switch CR2 is turned on.
R2a and the second relay contact CR2b are turned off, and the circuit 21 between the main switch SW1 and the power take-off device 15 and the circuit 23 between the collecting device electric circuit 12 and the engine speed increasing device 14 are turned off.

Subsequently, the main switch SW1 is turned on to turn on the relay contact CR1a of the relay switch CR1.
The state is switched to power is supplied from the battery 16 to the collector electric circuit 12 via the circuit 22.

The power is supplied to the collection electric circuit 12 by the ON operation of the main switch SW1, but since the first relay contact CR2a and the second relay contact CR2b of the relay switch CR2 are kept OFF, the power is taken out. The device 15 does not operate.

Subsequently, by turning on a collection device operation switch disposed in the charging box 2 or the like, the drain valve of the collection device hydraulic circuit 11 is switched, and the actuators such as the hydraulic motor 8 and the pushing cylinder 9 are operated. Then, the collection device 3 can load the garbage.

In a place where quietness is required,
If the main switch SW1 is turned on and the engine 13
Even when the hydraulic pump P1 is driven, the first relay contact CR2a and the second relay contact CR2b of the relay switch CR2 are turned off by inserting the plug 19 into the outlet and turning on the electric motor operation switch SW2. Power take-off device 15
Is stopped, the driving of the first hydraulic pump P1 is interrupted, and the electric circuit to the engine speed-up device 14 is turned off, so that the engine 13 is speeded up even if the collecting device differential switch is turned on. Therefore, switching to driving of the hydraulic pump P2 by the electric motor 18 is quickly performed.

That is, the hydraulic pump P1 by the engine 13
Hydraulic pump P2 by the electric motor 18 in preference to the drive of
Is driven. In other words, the operation of the collection device 3 by the electric motor 18 is performed prior to the operation of the collection device 11 by the driving of the engine 13, and a dust collection operation in which the noise of the engine 13 is extremely suppressed is provided.

Therefore, according to the present embodiment described above, when the main switch SW1 is turned on, the hydraulic pump P1 is driven by the engine 13 to operate the collecting device 3, and the engine speed increasing device 14 causes the engine 13 to operate. The number of rotations is controlled, and the hydraulic pressure supplied to the collecting device hydraulic circuit 11 is adjusted optimally, so that good dust collection work is provided.

On the other hand, in order to operate the collection device 3 by the electric motor 18 indoors or the like where quietness is required, the plug 19 is inserted into an outlet, and the motor operation switch SW is connected.
2 turns on the hydraulic pump P by the electric motor 18.
2, the collection device 3 is operated, and the dust collection work is performed in a state where the noise generated by the electric motor 18 is extremely suppressed.

Further, when the motor operation switch SW2 is turned on, the first relay contact CR of the normally closed relay switch CR2 is turned on.
2a and the second relay contact CR2b are turned off, the circuit 21 between the power take-off device switch SW1 and the power take-off device 15 is cut off, and the connection between the collection device electric circuit 12 and the engine speed-up device 14 is established. Since the circuit 23 is cut off, the operation of the collection device 3 by the engine 13 and the switching operation by the conventional manual changeover switch when switching the operation of the collection device 3 by the electric motor 18 can be omitted, and the switching operation can be simplified. In addition, reliable switching between the operation of the collection device by the engine and the operation of the collection device by the electric motor is ensured.

In the above embodiment, the relay switch CR
2. The first relay contact CR2a of the relay switch CR2
And the second relay contact CR2b and the like form the electric motor operation detection means, the power transmission cutoff means, and the engine speed increase prevention means. However, they can be formed by other switches or the like. Without being limited, various changes can be made without departing from the spirit of the invention.

[0054]

According to the present invention described above, the collecting device is operated by the first hydraulic pump by the engine, and the hydraulic pressure supplied to the collecting device hydraulic circuit is adjusted by controlling the engine speed by the engine speed increasing device. Garbage collection work is provided, and the collection device can be operated by driving the second hydraulic pump by an electric motor in a room or the like where quietness is required. Further, according to the electric motor operation detection of the electric motor operation detection means, the engine speed increase prevention means stops the engine speed increase, and the power transmission cutoff means cuts off the driving force from the engine to the first hydraulic pump. From
The operation of switching between the operation of the collection device by the engine and the operation of the collection device by the electric motor is simplified and reliable switching is ensured, thereby reducing the work load on the operator.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an outline of an embodiment of an operation control device of a collection device and an operation control method of the collection device in a refuse collection vehicle according to the present invention.

FIG. 2 is an explanatory diagram showing an outline of a refuse collection vehicle.

FIG. 3 is a schematic explanatory view illustrating a driving method of a conventional collecting device operated by an engine.

FIG. 4 is a schematic explanatory view illustrating a driving method of a collecting device operated by a conventional electric motor.

FIG. 5 is an explanatory diagram showing an outline of a drive control method and a drive control device of a collection device that operates a collection device by using a conventional engine and an electric motor together.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Dust storage box 2 Input box 3 Collection device 10 Operation control device 12 Collection device electric circuit 13 Engine 14 Engine speed increasing device 15 Power take-out device 18 Electric motor 21 Circuit 22 Circuit P1 Hydraulic pump (first hydraulic pump) P2 Hydraulic pump ( Second hydraulic pump) SW1 Main switch SW2 Electric motor operation switch CR2 Relay switch (Electric motor operation detection means) CR2a First relay contact (Power transmission cutoff means) CR2b Second relay contact (Engine speed increase prevention means) CR1 Relay switch CR1a Relay contact

Claims (3)

[Claims] 1. A storage device for loading refuse into a refuse storage box into a refuse storage box, a first hydraulic pump driven by an engine, and a second drive driven by an electric motor.
An operation control device for a collection device in a refuse collection vehicle, comprising a hydraulic pump, wherein the storage device is operated by hydraulic pressure supplied from the first hydraulic pump or the second hydraulic pump; Motor operation detection means, engine speed increase prevention means for preventing the engine from accelerating according to the electric motor operation detection of the electric motor operation detection means, and a first engine from the engine according to the electric motor operation detection of the electric motor operation detection means. An operation control device for a collection device in a refuse collection vehicle, comprising: a power transmission cutoff unit that cuts off a driving force to a hydraulic pump. 2. The electric motor operation detecting means is a relay switch that operates in accordance with power supply to the electric motor, and the power transmission cutoff means is interposed between the main switch and a power take-out device. A normally-closed first relay contact of the relay switch, wherein the engine speed-up preventing means comprises: a normally-closed type of the relay switch in which the collector electric circuit is interposed between the relay switch and the engine speed-up device. The operation control device for a collection device in a refuse collection vehicle according to claim 1, wherein the second relay contact is a second relay contact. 3. A storage device for loading dust into the input box into the dust storage box, a first hydraulic pump driven by an engine and a second device driven by an electric motor.
A method for controlling the operation of a collection device in a refuse collection vehicle, wherein the storage device is operated by hydraulic pressure supplied from the first hydraulic pump or the second hydraulic pump. In accordance with the electric motor operation detection of the motor operation detection means, the engine speed increase prevention means prevents the engine speed increase, and the power transmission cutoff means cuts off the driving force from the engine to the first hydraulic pump. An operation control method of a collection device in a refuse collection vehicle.