JPH0530007U - Dust loading device for garbage trucks - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a dust collecting vehicle that automatically and efficiently loads dust when, for example, throwing dust from a dust discharging section of a factory into a dust throwing box through a shooter. [Structure] A dust throwing box 20 is tiltably connected to a rear opening of a dust storing box 10 mounted on a vehicle frame, and
In a dust collection vehicle provided with a dust loading device 30 for loading the dust loaded in the dust loading box 20 into the dust loading box 10, an electric vehicle for controlling the operation of the dust loading device 30. The circuit is provided with delay means for carrying out a loading operation for one cycle each time a predetermined time elapses.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to operation control of a dust loading device in a dust truck.

[0002]

[Prior Art]

 Conventionally, a refuse input box is tiltably movably connected to a rear opening of a dust storage box mounted on a vehicle frame, and a garbage collection vehicle provided with a dust loading device is provided in the dust input box. The loading device is designed to be loaded by selecting one cycle stop type in which one loading operation is performed each time the operation switch is operated or continuous operation type in which loading operation is continuously performed. ..

When the waste discharged from the factory is put into the refuse collecting vehicle through the shooter, the operator operates the operation switch every time a predetermined amount of the dust is put into the refuse throwing box of the refuse collecting vehicle. By operating the dust loading device for one cycle, the dust was stored in the dust storage box.

[0004]

[Problems to be solved by the device]

 However, in the case where the operator operates the operation switch as in the above-mentioned conventional method, the operator is always attached to the refuse collection vehicle to operate the operation switch to operate the refuse loading device, resulting in poor work efficiency. There was a problem. Also, by making the operation of the dust loading device continuous, it is not necessary for the operator to operate the operation switch one by one, but since the dust loading device operates continuously regardless of the amount of dust input, There was a problem that the integration efficiency deteriorated.

[0005]

[Means for Solving the Problems]

 The dust dumping device of the dust dump truck according to the present invention is constructed such that the dust dumping box is tiltably connected to the rear opening of the dust dump box mounted on the vehicle frame, and the dust dumping box is connected to the dust dumping box. In a dust collection vehicle provided with a dust loading device for loading the thrown dust into the dust storage box, an electric circuit for controlling the operation of the dust loading device is loaded with one cycle every predetermined time. A delay means for performing the operation is provided.

[0006]

[Action]

 When dust is thrown into the dust throwing box from the dust discharge part of the factory through the shooter, the operator first turns on the start switch, and after that, the dust loading device is loaded by the delay means at predetermined intervals. Perform one cycle of operation.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration of a refuse collecting vehicle according to the present invention.

In FIG. 1, reference numeral 10 denotes a dust storage box mounted on a vehicle frame, and a dust input box 20 is connected to a rear opening of the dust storage box 10 so as to be tiltable by a pivot 21. A dust dumping device 30 is provided in the dust dumping box 20, and the dust dumped from an input port 22 formed in the dust dumping bin 20 is compressed and loaded into the dust dumping bin 10. ..

A discharge plate 11 slidable in the front-rear direction is arranged in the dust container 10, and a not-shown expansion / contraction provided between the discharge plate 11 and the front of the dust container 10 is provided. By the expansion and contraction operation of the cylinder, the discharge plate 11 can reciprocate in the dust container box 10 in the front-rear direction.

The dust loading device 30 includes a slide plate 31 that can slide from an upper front portion to a lower rear portion of the dust input box 20, and a press plate 36 pivotally supported at a lower end of the slide plate 31. There is.

The slide plate 31 is formed so as to have a substantially horizontal width of the dust throwing box 20. Guide grooves 38 are provided on the inner surfaces of both side walls of the dust throwing box 20 so as to be inclined from an upper front portion to a lower rear portion, and both side edges of the slide plate 31 are inserted into the left and right guide grooves 38 via rollers (not shown). The slide plate 31 is slidable along the guide groove 38. A pivot 33 is pivotally supported on the upper part of the upper surface of the slide plate 31 via a bracket 32, and both ends of the pivot 33 are inserted outwardly through notches (not shown) formed in the side wall of the dust throwing box 20. It is protruding. The ends of the pivot 33 are connected to the rod ends of the first telescopic cylinder 35 arranged on the outer surfaces of both side walls of the dust throwing box 20, and the telescopic operation of the first telescopic cylinder 35 causes the pivot 33 to move the notch. Accordingly, the slide plate 31 slides up and down along the guide groove 38. The notch is formed in a strip shape in the same direction as the sliding direction of the slide plate 31 and with a length substantially equal to the sliding distance of the slide plate 31.

Like the slide plate 31, the press plate 36 is formed to have a substantially horizontal width of the dust input box 20, and the lower surface in FIG. 1 is a press surface. A second telescopic cylinder 37 is connected between the upper surface of the press plate 36 and the pivot 33, and the press plate 36 is rotated back and forth around the pivot 36a by the telescopic operation of the second telescopic cylinder 37. Has been done.

The first telescopic cylinder 35 is connected to a hydraulic pump (not shown) connected to an oil reservoir via an electromagnetic control valve. This electromagnetic control valve controls the expansion and contraction of the first expansion and contraction cylinder 35 by switching the pressure oil supplied to the first expansion and contraction cylinder 35 by the hydraulic pump. Here, the solenoids SOL3 and SOL4 shown in FIG. 2 are excited. A 3-position switching valve that is switched by is used. That is, the electromagnetic switching valve switches from the neutral position to one position by exciting the solenoid SOL3 to retract the first telescopic cylinder 35, and from the neutral position to the other position by exciting the solenoid SOL4. The first expansion / contraction cylinder 35 is changed to extend.

Similarly, the second telescopic cylinder 37 is also connected to a hydraulic pump communicating with the oil reservoir via an electromagnetic control valve, and this electromagnetic switching valve is activated by exciting a solenoid SOL1 shown in FIG. The second telescopic cylinder 37 is retracted by switching from the neutral position to one position, and the solenoid SOL2 is excited to switch from the neutral position to the other position to extend the second telescopic cylinder 37.

Next, an electric circuit diagram of the refuse collecting vehicle according to the present invention will be described.

2 and 3 show a main part of an electric circuit of the refuse collecting vehicle according to the present invention, FIG. 2 shows an upper part of the electric circuit, and FIG. 3 shows a lower part of the electric circuit. ..

In FIGS. 2 and 3, SW1 is a first selection switch for selecting dust loading work or dust discharging work, SW2 is a start switch of the dust loading device, and SW3 is a one-cycle stop type or a continuous operation type. A second selection switch for selecting whether or not, SW4 and 5 are stop switches, SW6 is an ignition switch, PS is a pressure switch, and F is a fuse.

LS1 is a limit switch (electrical contact point) that detects the upper limit position of the slide plate 31, LS2 is a limit switch that detects the lower limit position of the slide plate 31, and LS3 is the rearward rotation limit position of the press plate 36. L S4 is a limit switch that detects the forward rotation limit position of the press plate 36.

The limit switches LS1 and LS2 are provided on either one of the dust throwing box 20 and the slide plate 31, and the actuating member is provided on the other side, and the limit switches LS1 and LS2 are respectively contacted. It operates when the operating member comes into contact with. Further, the limit switches LS3, LS4 are arranged on the upper surface of the slide plate 31, and are operated by an interlocking member such as a link mechanism provided so as to interlock with the rotation of the press plate 36.

[0021] R1 to R9, X1, X2 is a relay, these relays R1 to R9, X1, normally open, which is opened and closed controlled by X2 relay contact _{r 1a ~r 9a, x 1a,} x 2a, and normally closed Relay contacts r _{2b to} r _6b , x _2b are connected.

Further, T1 to T4 are timers, and have timer contacts t1 to t4, respectively.

It should be noted that LS5 and LS6 are limit switches, which are provided at the lower part of the inlet 22 and which can be opened and closed, for detecting the opening and closing of the plate, and are closed when the plate is opened. PL is an operating indicator lamp. Further, R6 is a relay (not shown), and this relay R6 is excited when the dust remaining in the dust throwing box 20 is discharged.

Next, the loading operation of the refuse collecting vehicle configured as described above will be described.

First, the loading operation in the case of the one-cycle stop type will be described.

Here, the broken line of the press plate 36 shown in FIG. 1 shows the state at the end of the dust stuffing process or when the dust is put in. In this state, the first and second telescopic cylinders 35, 37 are both The slide plate 31 is extended, and the limit switch LS1 is operated in the rising limit position, and the press plate 36 is in the forward rotation limit position, and the limit switch LS4 is operated.

In this state, the first selection switch SW1 is switched to the upper position (loading position) in FIG. 2, the second selection switch SW3 is switched to the lower position (single-acting position) in FIG. 2, and the start switch SW2 is pressed. Manipulate. As a result, the relay R1 is excited and self-held. As a result, the relay contact _r1a is closed, and the relay R2 is excited and self-held to start the dust loading operation.

When the relay R2 is excited, the relay contact r _2a is closed and the solenoid SOL1 is excited. When the solenoid SOL1 is excited, the electromagnetic control valve is switched and the second telescopic cylinder 37 is retracted, and in the counterclockwise direction about the pivot 36a in FIG. 1, the press surface of the press plate 36 is rotated. Invert to a substantially horizontal position as shown by the solid line in FIG. 1 (inversion step).

When the press plate 36 reaches the rearward rotation limit position, the limit switch LS3 operates and the relay R3 is excited, so that the relay contact r _3b is opened and the relay R 2 is demagnetized. The contact r _3a is closed and the solenoid SOL3 is excited, whereby the electromagnetic control valve is switched and the first telescopic cylinder 35 is retracted. The slide plate 31 descends along the guide groove 38 due to the contraction of the first telescopic cylinder 35, and the press plate 36 connected to the slide plate 31 also descends while the press surface thereof is maintained in a substantially horizontal state. And the dust is crushed between the dust throwing box 20 and the circular arc surface of the bottom (crushing step).

When the press plate 36 reaches the lower limit position, the limit switch LS2 is actuated to excite the relay R4, whereby the relay contact _r4b is opened and the relay R3 is demagnetized and the relay contact _r4a. Is closed and the solenoid SOL2 is excited. Thereby, the electromagnetic control valve is switched to extend the second telescopic cylinder 37. As a result, the press plate 36 is rotated in the clockwise direction around the pivot 36a to a position where the press surface is in a substantially vertical state, and the dust crushed in the previous step is removed from the dust on the press surface of the press plate 36. The space between the flat surfaces of the bottom surface of the charging box 20 is compressed (compression step).

When the press plate 36 reaches the forward rotation limit position, the limit switch LS4 operates to excite the relay R5, thereby opening the relay contact r _{5b and deactivating the} relay R4. , The relay contact r _5a is closed and the solenoid SOL4 is excited. As a result, the electromagnetic control valve is switched and the first telescopic cylinder 35 is extended. As a result, the first telescopic cylinder 35 expands, the press plate 36 rises while the pressing surface of the press plate 36 maintains a substantially vertical state, and the dust collected in the previous step is packed in the dust storage box 10 (packing step). ..

While the reversal end state shown in FIG. 1 is reached until the crushing step, the relay R3 is excited as described above by the operation of the limit switch LS3 that detects the end of reversal. The timer T2 is also excited. Therefore, when the slide plate 31 starts descending and the set time elapses, the timer contact t2 is closed to excite the relay X2. Therefore, when the relay contact _x2a is closed and the relay R4 is excited, the relay R3 is demagnetized, the lowering of the slide plate 31 is stopped, and the compression process by the press plate 36 is started as described above. In this way, even if the slide plate 31 is prevented from descending due to dust and cannot reach the crushing limit position, that is, if the limit switch LS2 is not switched and a certain period of time elapses, the next compression process is performed. Can be migrated.

When the relay R4 is excited and the compression process is started, the limit switch LS3 is switched to open and the relay X2 is demagnetized, so that the relay contact _x2b is closed and the timer T1 is closed. To excite. Then, after a certain period of time, the timer contact t1 is closed to excite the relay X1. As a result, the relay contact _x1a is closed to excite the relay R5. Therefore, since the relay R4 is demagnetized, the compression process by the press plate 36 is stopped, and the slide plate 31 rises as described above, and the packing process starts. In this way, even if the press plate 36 is prevented from being compressed by dust and cannot reach the forward rotation limit position, that is, the limit switch LS4 is not switched, the next packing process can be started. it can.

By the way, when the thrown dust cannot be compressed by the compression process, the process moves to the packing process by the action of the timer T 1, but the press plate 36 is rotated at least to a position close to a substantially vertical state. If not, it is impossible to pack the dust in the dust storage box 10.

In this case, the pressure oil is supplied so as to extend the second telescopic cylinder 37 for the time set by the timer T1, and during this time the pressure cannot rotate because the press plate 36 cannot rotate due to the resistance from dust. To rise. Then, when the pressure reaches a certain set value, the pressure switch PS is activated and the contact is closed, so that the current from the power supply continues to supply the solenoid SOL2 with electricity, and at the same time, the relay contact r _4a and the pressure switch. PS, via a relay contact r _5b to energize the solenoid SOL4. Therefore, the first telescopic cylinder 35 is extended and the second telescopic cylinder 37 is also extended, and the press plate 36 rises while continuing the compression process. The rise of the preprate 36 reduces the reaction force of dust on the press plate 36, which reduces the pressure acting on the pressure switch PS, opens the contact point of the pressure switch PS, and opens the solenoid SOL4. Is turned off. As a result, only the first expansion and contraction cylinder 35 is expanded, and the compression process is performed in a state where the packing process is interrupted. In other words, the press plate 36 slightly rises to change the location of the dust and compress it so as to crush it, and the dust that could not be compressed by normal sequential operation is in a substantially vertical state of the pressure plate 36. It is compressed at its tip by turning to. In this way, if the press plate 36 is rotated in a substantially vertical state by changing the place, the prepray 36 is rotated until the time set by the timer T1 or until the limit switch LS4 is activated, and then the stuffing is performed. Restart the process.

Next, the loading operation in the case of the continuous operation type will be described.

The first selection switch SW1 is switched to the loading position, the second selection switch SW3 is switched to the interlocking side, and the starting switch SW2 is pressed. As a result, the relay R1 is excited and self-held, and at the same time, the timer T4 is energized. As a result, the timer contact t4 is closed after about 1 second and the relay R9 is excited. When the relay R9 is excited, the relay contact _r9a is closed, so that the relay R8 is excited and held by itself. At this time, the timer T3 is not energized because the relay contact _r9b is opened. When the above-mentioned dust loading operation is completed for one cycle, the limit switch LS1 is opened, so that the self-holding of the relay R1 is cut off and the dust loading operation is stopped.

At this time, the timer T4 and the relay R9 are also cut off to energize the timer T3, and after a predetermined time (for example, about 3 minutes) has passed by the timer T3, the timer contact t3 is closed, and as a result, the relay R1 is excited. The same dust loading operation as described above is performed for one cycle.

When the second selection switch SW3 is set to the interlocking position in this way, the dust loading operation is activated every time the time set by the timer T3 has elapsed.

Therefore, when dust is thrown into the dust throwing box from the dust discharge part of the factory through the shooter, the operator first turns on the start switch, and thereafter the dust is automatically and efficiently loaded. You can take action.

[0041]

[Effect of the device]

 As described above, according to the present invention, the loading operation of one cycle is performed by the delaying means every time a predetermined time elapses, so that the dust is thrown into the dust throwing box through the shooter from the dust discharging section of the factory. In this case, the operator only needs to turn on the start switch at first, and then the dust loading device performs one loading operation every predetermined time. Therefore, the dust loading operation should be performed only automatically and efficiently. You can

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a schematic configuration of a garbage truck.

FIG. 2 is an electric circuit diagram of a garbage truck according to the present invention.

FIG. 3 is an electric circuit diagram of a garbage truck according to the present invention.

[Explanation of symbols]

 10 Dust storage box 20 Dust input box 30 Dust loading device

Claims (1)

[Scope of utility model registration request] 1. A dust throwing box is tiltably connected to a rear opening of the dust throwing box mounted on a vehicle frame, and the dust throwing box is provided with the dust throwing into the dust throwing box. In the refuse collection vehicle provided with the refuse loading device, the electric circuit for controlling the operation of the dust loading device is provided with a delay means for performing a loading operation of one cycle every predetermined time. A garbage loading device for a garbage truck.