JPS6260324B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operation control device for a garbage storage and discharge machine equipped with a garbage storage drum that is rotationally driven by a drive device such as an electric motor.

Conventionally, a garbage storage drum is provided with a discharge port at the front end and an input port at the rear end, and which is rotationally driven by a drive device such as an electric motor.
A garbage storage drum comprising a guide member such as a dust chute inserted inward from the input port of the garbage storage drum, and compressing and storing the garbage supplied into the garbage storage drum through the guide member toward the discharge port. Storage and discharge machines are known (for example,
(See Publication No. 49-128562).

In such a garbage storage and discharger, when garbage is caught between the inner wall of the garbage storage drum and the open end of the guide member, the rotational drive of the garbage storage drum is stopped due to the resistance. There were problems such as damage to the dust storage drum and excessive current flowing through drive devices such as electric motors, which adversely affected related equipment.

The present invention was made in view of the above problems, and
When garbage gets caught, the operation of the garbage storage drum is controlled to automatically remove the entanglement, and if the entanglement cannot be removed, the rotational drive of the garbage storage drum is stopped and the garbage is stored. The present invention provides an operation control device for a dust storage and discharge machine that prevents damage to the drum and drive device.

In order to achieve the above-mentioned problems, the present invention provides a forward rotation operation control circuit that detects garbage thrown into a garbage storage drum through a guide member and controls a drive device to drive the garbage storage drum in forward rotation for a predetermined period of time. and a detector that detects the jamming between the dust storage drum and the opening end of the guide member.When this detector is activated, the forward rotation of the dust storage drum is stopped, and then the dust storage drum is driven reversely by a predetermined amount, and the dust storage drum is rotated again. An overload prevention control circuit that controls the drive device to drive the drive device in the forward direction, and when the forward rotation operation control circuit drives the garbage storage drum in the forward rotation state and when the reverse drive of the dirt storage drum is repeated a predetermined number of times or more, the drive device The rotation stop control circuit is configured to control the rotation stop.

The present invention operates as follows.

First, when garbage is introduced into the garbage storage and discharge machine via a guide member, it is detected and the garbage storage drum is driven to rotate forward for a predetermined period of time.

At this time, if garbage is caught between the garbage storage drum and the opening end of the guide member, this is detected and the forward rotation of the garbage storage drum is stopped, and then the garbage storage drum is driven in the reverse direction by a predetermined amount, and the garbage is stored again. Drive the drum in forward rotation.

In this way, jamming is removed by switching between reverse rotation and forward rotation of the dust storage drum.
If the jam cannot be removed even after performing the reverse rotation a predetermined number of times, that is, if the jam continues to be detected, the rotational drive of the dust storage drum is stopped.

Hereinafter, an embodiment in which a garbage storage drum is driven by an electric motor will be explained with reference to the drawings. First, in FIG. It is opened, and a guide member 4 such as a dust chute is inserted inward from the input port 3.

This garbage storage drum 1 compresses and stores garbage, and is tapered from the rear toward the front end.
A spiral blade 6 and a swallowing blade 7 are provided in the interior thereof, and the garbage thrown in through the guide member 4 is crushed by the open end 8 of the guide member 4 and the swallowing blade 7, and the garbage is stored therein. It is designed to be compressed and conveyed toward the tip of the drum 1. The dust storage drum 1 is rotatably supported by a roller 9 at its front end and by a bearing 10 at its rear end.

Reference numeral 5 denotes a phototube switch for detecting the amount of garbage thrown in, and the operation of this phototube switch 5 closes a limit switch LS, which will be described later.

Reference numeral 11 denotes a drive device composed of an electric motor, which drives the dust storage drum 1 in forward or reverse rotation via a chain sprocket (not shown).

Then, the electric motor 11 drives the dust storage drum 1 in normal rotation for a certain period of time by the operation of the phototube switch 5, and during this normal rotation, there is a gap between the open end 8 of the guide member 4 and the swallowing blade 7. When the dust is caught and resistance exceeds a predetermined value, the forward rotation of the dust storage drum 1 is temporarily stopped, and then the forward rotation is driven by a predetermined amount, and the normal rotation is returned again. is controlled to stop when it is repeated a predetermined number of times or more.

A control circuit for performing such an operation is shown in FIG. 2, and this control circuit will be explained below.

First, in Figure 2a, U, V, and W are three-phase AC power supplies, mc1' and mc2' are contacts of the electromagnetic switch, and P
is an overload detector.

Then, the contacts of the electromagnetic switch are connected to the power supplies U, V, and W.
When current is supplied to the electric motor 11 via mc1', the garbage storage drum 1 is driven to rotate in the forward direction, whereas when current is supplied to the electric motor 11 via contact mc2' of the electromagnetic switch, the garbage storage drum 1 is driven to rotate in the forward direction. 1 is designed to be driven in reverse.

Next, in FIG. 2b, 12 and 13 are wires connected to the anode and cathode of the power source, LS is a limit switch that opens and closes in conjunction with the operation of the phototube switch 5, and OL is a limit switch that the electric motor 11 has a resistance of more than a predetermined value. an overload detection relay switch that operates in response to a signal from the detector P when received;
2, X3, X4, X5 are relays, contacts x1, x
2, x3, x4, x5.

T1, T2, T3, T4, and T5 are timer relays, and are provided with contacts t1, t2, t3, t4, and t5. C is a counter, CR is a counter relay, and it is equipped with a contact CR. MC1 and MC2 are electromagnetic switches, which are provided with contacts mc1 and mc2 in addition to the contacts mc1' and mc2' mentioned above.

Here, mainly the limit switch LS,
Relays X1, X2, electromagnetic switch MC1, and timer relay T1 form the forward rotation operation control circuit, and the overload relay switch OL and timer relay T2, T
3. Overload prevention control circuit with T4, T5, relays X3, X4 and electromagnetic switch MC2, counter C, counter relay CR, timer relay T5
and relay X5 constitute a rotation stop control circuit, respectively.

Next, the operation of this embodiment will be explained.

First, when garbage is put into the garbage storage drum 1 through the guide member 4 and the phototube switch 5 is activated, the limit switch LS is closed and the relay
1 closes its a contact x1.

Since the relay X2 is excited via this a contact x1, the a contact x2 is closed and the electromagnetic switch MC1 is energized.

Therefore, the a contact mc1' is closed and the electric motor 11 is driven to rotate in the normal direction, thereby driving the dust storage drum 1 to rotate in the normal direction. When the forward rotation of the dust storage drum 1 has elapsed for a predetermined period of time set by the timer relay T1, the b contact t1 is opened and the excitation of the relay X2 is cut off.

As a result, the a contact x2 is opened, the excitation to the electromagnetic switch MC1 is cut off, and the a contact mc1'
is opened, and the rotational drive of the electric motor 11 is stopped. In this way, the garbage supplied from the guide member 4 is sequentially compressed and stored in the garbage storage drum 1.

Next, during the normal rotation operation, the open end 8 of the guide member 4
To explain the case where dust gets caught between the electric motor 11 and the swallowing blade 7, when the electric motor 11 receives a resistance of more than a predetermined value due to the dust getting caught, a current higher than the set current flows through the detector P, causing an overload. A load is detected, and this overload signal closes the overload relay switch OL.

When this overload relay switch OL closes, timer relay T5 is activated;
Since the a contact t5 is closed after the time set by 5 has elapsed, the relay X3 is energized. As the relay X3 is energized, its a contact x3 is closed and its b contact x3 is simultaneously opened, so that the electromagnetic switch MC1 is first de-energized and the forward rotation of the electric motor 11 is stopped.

As a result, the forward rotation of the dust storage drum 1 is stopped, and the stop is continued for a time set by the timer relay T2, which is energized via the a contact x3 of the relay X3. When the set time has elapsed, the a contact t2 of the timer relay T2 closes to energize the relay X4, and the electromagnetic switch MC2 is energized via the a contact x4. As a result, the a contact mc2' closes and the electric motor 11 is driven in the reverse direction. The reverse drive of the dust storage drum 1 accompanying the reverse drive of the electric motor 11 is controlled by the timer relay T.
This is carried out for a set time by timer relay T3, which is energized via a contact t2 of No. 2.

After the set time has elapsed, timer relay T3 a
At the same time as contact t3 closes, b contact t3 opens,
The electric motor 11 is stopped for the time set by the timer relay T4.

When the time set in timer relay T4 has elapsed, b contact t4 of timer relay T4 opens and excitation of relay X3 is cut off.
3 is closed, the electromagnetic switch MC1 is excited, and the electric motor 11 is again driven in normal rotation.

At this time, the a contact t5 of the timer relay T5
When the is closed, a counter C is activated to count the number of engagements (the number of reverse rotations). When the predetermined number of times set in the counter C is reached, the a contact cr of the counter relay CR is closed and the relay X5 is energized, so that the b contact x5 of the relay X5 is opened and the current to the circuit is cut off. , the entire operation is stopped.

In the embodiment described above, the guide member 4 is formed into a dust chute, and the dust thrown into the dust chute is detected by a dust input amount detection means such as a phototube switch 5, and the dust storage drum 1 is driven in normal rotation for a certain period of time. This is about the case,
In another embodiment, garbage is input by a garbage container reversing device provided at the rear of the input port 3 of the garbage storage drum 1, and when the garbage container reversing device is activated, the garbage storage drum 1 is driven in forward rotation for a certain period of time. You can also.

Further, in another embodiment, the dust storage drum 1 may be rotated in the normal direction for a certain period of time when the number of openings and closings of the dust inlet door provided in the dust chute reaches a predetermined number of times.

Furthermore, when the operator himself operates the starting switch without using the phototube switch 5, the normal rotation may be made for a certain period of time.

As described above, according to the present invention, when the garbage storage drum is driven in normal rotation, if resistance of more than a predetermined value is encountered due to the resistance of the garbage, the normal rotation of the garbage storage drum is temporarily stopped, and then the garbage storage drum is moved. The structure is configured so that the rotation of the dust storage drum is stopped when the rotation of the dust storage drum is controlled so that it is driven in the reverse direction by a fixed amount and then driven in the forward direction again. If the dust is not removed, it is automatically stopped, so there is no damage to the dust storage drum or drive unit.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the invention.
The figure is a side view of the dust storage and discharge machine, and FIG. 2 is an electrical wiring diagram of the operation control device of the dust storage and discharge machine. 1... Dust storage drum, 4... Guide member (dust chute), 5... Phototube switch, 11...
Drive device (electric motor), LS...Limit switch, OL...Overload detection relay switch.

Claims (1)

[Claims] 1. A dust storage drum having a discharge port formed at the front end and an input port formed at the rear end, a guide member such as a dust chute guided inward from the rear end of the dust storage drum from the input port of the dust storage drum, and the above-mentioned dust storage drum. In a garbage storage and discharge machine that includes a drive device that rotationally drives a garbage storage drum, the drive device is controlled to detect garbage introduced through the guide member and drive the garbage storage drum in forward rotation for a predetermined period of time. a normal rotation operation control circuit for detecting interference between the dirt storage drum and the opening end of the guide member; an overload prevention control circuit that controls the drive device so as to drive the dust storage drum in forward rotation again; An operation control device for a garbage storage and discharge machine, comprising a rotation stop control circuit that controls the drive device to stop when the rotation is repeated more than a number of times.