JPS6197702A - Fault detector - Google Patents

Abstract

PURPOSE:To prevent previously the breakage of the rotary parts and transmission mechanisms by comparing the load value of a prime mover which is under a no-load working state with the prescribed set value and therefore detecting the fault state of a machine before the work is started together with the control jobs. CONSTITUTION:A prime mover X is driven when a drive switch 45 is turned on. Thus each rotary part of the machine which receives the power from the mover X is revolved via transmission belts 26, 34 and 37. Then the load value IN of the mover X obtained in a no-load working state is compared with the set upper limit value IH. When the value IN is smaller than the value IH, the value IN is compared with the lower limit value IL. While the energization of a relay 53 is released to stop the energization of the mover X in case the value IN is larger than the value IH and smaller than the value IL respectively. Then a light emitting diode 54 is turned on to actuate a buzzer 55.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an abnormality detection device for detecting an abnormal state of a machine body in a transmission device that uses a prime mover to drive each rotating part of the machine body. Can be used for sliding sorting equipment, etc.

[Conventional technology]

After performing work by driving each rotating part of the machine body, a worker often notices that the transmission mechanism (for example, a belt) is burnt out.

[Problems to be solved by the present invention] However, with the above-mentioned devices, it is difficult to detect abnormalities in the aircraft in the initial state, so wear and tear of rotating parts or burnout of belts are likely to occur. Means to Solve the Problem] The present invention is an attempt to solve such a technical problem, and has taken the following technical means.

That is, a detecting means configured to enable transmission between the rotating part of the machine body and the prime mover (2) via a transmission mechanism, detecting a load value of the prime mover (2) in a no-load working state of the machine body, and a detection means set in advance with the load value; , a comparison means for comparing set values having a width within a predetermined range, and an abnormality control means for performing abnormal control in the event of an abnormality, and a detection means and a comparison means for performing abnormal control when the load value is outside the set value range. and the abnormality control means.

[Effect]

When the prime mover (X) is driven, the rotating part of the machine body rotates via the transmission mechanism, and the load value of the prime mover (2) in this no-load working state is also detected by the detection means.

This load value is compared with a preset value by a comparing means, and if it is outside the set value range, an abnormality control action is performed by the abnormality control means.

〔effect〕

Since an abnormal state of the machine body can be detected and control work can be performed before the start of work, it is possible to prevent damage to the machine rotating part and the transmission mechanism.

〔Example〕

Embodiments of the invention shown in the drawings will be described below.

First, to explain the structure of the embodiment, (1) is a shedding section, and this shedding section (1) is composed of a paddy tank (2), a pair of shedding rolls (X), (X), etc. There is. (4) is a sludge rice wind sorting path, in which sloughed rice from the shedding part (1) is sorted by the sorting wind generated by the suction fan chamber (5) in front;
The rice husks are discharged from the suction fan chamber (5) through the dust exhaust pipe (6) to the outside of the machine, and the mixed rice of brown rice and paddy falls into the sliding rice receiving trough (7) below. The mixed rice dropped into (7) is transported by a mixed rice lifting machine (8) to the starting end of a supply gutter (not shown) which also serves as a mixed rice receiving gutter.

00 is a sorting case, and inside the sorting case GO there is a supply side end (on the right side in Fig. 1) and a discharge side end so that a rotary sorting cylinder αD having a large number of pot holes on the inner circumferential surface can rotate almost horizontally. Drive roller a2112 at the side end (left side in Figure 1)
It is rotatably supported. Inside this rotary sorting cylinder Qli, the supply gutter having a supply helix (not shown), a finishing rice helix α9f, and a finishing rice gutter αυ having a feeding helix (not shown) are horizontally mounted.

When arranging this supply gutter and finishing rice gutter αG inside the rotating sorting tube OD, place the supply gutter on the side of the rotating sorting tube αD' that rotates from the bottom to the top, and place the finishing rice gutter αG inside the rotating sorting tube αD. The mixed rice scooped up by the pot hole of the rotary sorting tube αD, which is arranged on the side that rotates from the top to the bottom, is
It is configured so that it falls into the supply gutter and is transferred to the end side of the feed gutter by a supply helix, and the feed gutter also functions as a mixed rice receiving gutter. The discharge side end of the finishing rice gutter OG is connected to the finishing rice receiving gutter 0 via the finishing rice flow lower pipe αD and the finishing rice grain plate Q81.
9, and while the finished rice falls from the finishing rice flow lower tube αη and the finishing rice flow grain board α8) to the finishing rice receiving trough O1, the brown rice that flows down to the finishing wood receiving duct O1 is It is sent out of the machine via the rice frying machine ■. A rice warming cylinder Q11 is connected to the discharge side end of the rotary sorting cylinder OD.

The pipe is the rice reduction gutter, and the U reduction gutter (A) is the rotary sorting tube 0.
1) Extends to the lower position of the paddy heating cylinder of the side paddy heating cylinder @, and lifts the paddy upward with the paddy heating cylinder QD,
It has the function of returning paddy to the tank section (141) of the removing section (1).

The prime mover (X) (in the example, an electric motor) is located behind the finished rice receiving trough α9, and is connected to the wind selection section (4) of the machine body.
It is cooled by the selective air drawn in from the intake port (c) installed in the rear aircraft frame. A pulley (to) is attached to the shaft end of the prime mover (X), and a double pulley (to) that drives the boo IJ (241) and the roll (X) to be removed
A belt (A) is wrapped around and stretched between (A) and (A).

In addition, the finished rice receiving gutter α9, the fallen rice receiving gutter (7), and the fallen rice winding path (4) are provided at the bottom between the fallen rice receiving gutter (7) and the suction fan room (5). At the inner bottom of the receiving gutter (5), a finishing helix (c), a scraping rice helix, and a helix M' are rotatably installed, respectively, and the shaft end on the pulley (to) side A pulley 0υ0203 is attached to each part. A belt (■) is wound around and stretched between the graben of the boo IJ 0η0203 and the boo IJ i, and the graben of this pulley (c) which is configured with two sets and the inside of the suction fan chamber (5). A belt (9) is wound around and stretched between pulleys attached to the shaft end of a suction fan can rotatably installed on the shaft.

Note that the power of the shedding roll (X) is transmitted to the other shedding roll (X) via a transmission mechanism (for example, gear transmission) to rotate this shedding roll (X) in the direction of the arrow. In addition, an output shaft (G) is provided outside the casing (to) of the removing part (1), and is configured to transmit power to the helical shaft of the finishing helix αθ via the coupling 00. ◎ Attach the Goo IJ G11) to the helical shaft,
The roller shaft of the drive roller QKI is rotated via the bell HL2-i to rotate the rotary sorting cylinder α°C.

@2 To explain the block circuit in Figure 2, ■ is the arithmetic control unit (hereinafter referred to as CPU) of the microconverter, which includes memory (not shown), input ports corresponding to each input/output, and It has an output port (not shown) and performs arithmetic logic operations and comparison operations.

The input port is connected to a switch for driving and stopping the prime mover (X), and an A/D converter (C) whose input side is connected to an amplifier circuit (47) is connected to the input port. Connected to the output side. The input side of this amplifier circuit 0'7) is connected to the output side of a rectifier circuit Gη connected between current transformers provided in the power supply line of the drive circuit 09.

In addition, an amplifier circuit 62 is connected to the output port of the CPU (L44).
through the relay Q and the light emitting diode (
A buzzer that notifies the alarm is connected to the buzzer. Furthermore, multiple types of prime movers can be connected to the CPU input port.
A selectable motor type changeover switch is connected to the wheel.

The CPU (b) has the following functions.

That is, (1) When information on the drive switch (g) is taken in, a drive command signal is output to the relay Q via the amplifier circuit a112. Therefore, relay Q is energized and the relay contact [F] force is increased.
Since it is set to ONJ, the prime mover (X) is driven to rotate each rotating part of the aircraft. (2) When the information from the stop switch 0Q is taken in, a stop signal is output to the relay Q via the amplifier circuit, so the relay contacts 1i11 become rOFFj and stop the prime mover (2). The load voltage (load value) of the prime mover detected by the current transformer is rectified by the rectifier circuit G1), amplified by the amplifier circuit (4η), and then amplified by the A/D converter (
C) is converted into a digital quantity, and this digital quantity is imported. ■Receive the type information of the prime mover (■) set with the motor type selector switch (4). ■The load value (IN) converted into a digital quantity and the upper limit (II-1) and lower limit (
Comparison operation is performed. ■The load value (■-) is the upper limit (■
1. I) and smaller than the lower limit (IL), that is, outside the set value range, outputs a drive command signal (abnormality control means) that drives the light emitting diode and the buzzer (abnormality control). ), and at the same time, release the excitation of relay liJ.

Next, to explain the operation based on the flowchart of FIG. 3, if the power supply is rONJK (step 51
0), turn the drive switch ■ to "ON" (step 52
0). Then, the relay contact G71 turns ON due to the excitation of the relay and drives the prime mover ■, so the rotating parts of the aircraft that are in transmission with this prime mover (X) are connected via the transmission belt (A) t34@. rotates. Then, the load value (IN) of the prime mover (X) during this no-load operation
is read (step 530), and then this load value (I
N) and the setting upper limit value (I.

) are compared (step 540). And the load value (
When IN) is smaller than the upper limit (I) (), the load value (I
N) and the lower limit (ILC) are compared (step 550).
. On the other hand, when the load value (Iri) is larger than the upper limit value (II-+) or smaller than the lower limit value (Niji), the relay (G) is fully de-energized and the power supply to the prime mover (X) is stopped. (step 560), the light emitting diode is driven (lit) (step 570), and the buzzer is sounded (step 580). Then, it is determined whether the stop switch 00 has been input (step 590), and if it has not been input, the light emitting diode (incorporated) is driven to display an abnormality, and the buzzer continues to notify the abnormality.

Then, the load value (IN) is the upper limit value (IH) and the lower limit value (I
L.

), neither the light emitting diode nor the buzzer will operate, so the operator must adjust the machine conditions (e.g.
It can be easily determined that the condition (belt tension, grain clogging, etc.) is normal, and the paddy can be fed into the paddy tank (2) and the hulling operation can be started.

Therefore, the operator can determine whether or not the machine is normal before starting the hulling operation, thereby making it possible to prevent damage or burnout of the rotating parts.

[Brief explanation of the drawing]

The figure shows one embodiment of the invention. FIG. 1 is a side sectional view of the rice huller, FIG. 2 is a block circuit, and FIG. 3 is a flowchart. ■ indicates the prime mover.

Claims (1)

[Claims] The rotating part of the fuselage and the prime mover (X) are configured to be able to transmit power via a transmission mechanism, and the prime mover (
X) has a detection means for detecting the load value, a comparison means for comparing the load value with a preset value having a width within a predetermined range, and an abnormality control means for performing abnormality control in the event of an abnormality, An abnormality detection device configured to associate a detection means, a comparison means, and an abnormality control means to perform abnormality control when a load value is outside a set value range.