CN2251867Y

CN2251867Y - Automatic alarm anti-blocking apparatus for grain combine harvester

Info

Publication number: CN2251867Y
Application number: CN 96213571
Authority: CN
Inventors: 韩广增
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-14
Filing date: 1996-06-14
Publication date: 1997-04-16
Anticipated expiration: 2006-06-14

Abstract

The utility model discloses an automatic alarm anti-blocking apparatus for a grain combine harvester, which is composed of a detection circuit, a control alarm circuit and a control element. When a wheat scourer of a harvester is blocked, the utility model can send out alarm and a control signal to make people control a clutch of the harvester or automatically control the clutch of the harvester. Then the harvester stops traveling and cutting wheat, and the wheat scourer continues to digest grains which are fed. The utility model has the advantages of simple structure and convenient use.

Description

The grain combine anti-blocking apparatus of reporting to the police automatically

The utility model belongs to the control warning device of agricultural machinery, relates in particular to a kind of grain combine anti-blocking apparatus of reporting to the police automatically.

Along with development of times, agricultural mechanization has replaced the beast submode that threshes wheat substantially, the appearance of grain combine, make the time of receiving the wheat seeds autumn that tangible shortening arranged, alleviated peasant's labour intensity greatly, the structure of grain combine comprises three parts: running gear, cut wheat part, the part of threshing wheat.The wheat of will cut off along with walking forward during work is transported to the input spout of wheat scourers and beats grain.As clutch is slammed, cut the wheat part and will dally, wheat scourers can have been beaten feeding too much wheat originally.But thing followed new problem is: harvesting when wheat is moist, clogging often appears in the wheat scourers part of grain header, in case stop up, collude in the duck eye one by one of wheat scourers with regard to handy subsidiary iron and little by little collude wheat outward, whenever tick, prizing belt pulley with big iron rod rotates a bit it, collude the wheat at other position again, often will spend 1-3 hour, the full ground that also wheat of ticking can be spilt all is, not only waste farming season, grain, also easily cause crop smothering.

For overcoming above-mentioned defective, it is a kind of practical that the utility model provides, the simple grain combine of the circuit anti-blocking apparatus of reporting to the police automatically, and it both can send warning when grain header stops up.Can provide control signal to take the corresponding plug measure of putting again.

For achieving the above object, the utility model has adopted following technical scheme:

A kind of grain combine anti-blocking apparatus of reporting to the police automatically, it is by testing circuit, control warning circuit and control element are formed, testing circuit comprises that the JF alternator output voltage signal that is communicated with grain combine wheat scourers main shaft supplies with relay J 1 work behind bridge path rectification, described control warning circuit comprises that the negative electrode of one-way SCR KZ1 and power cathode join, the control utmost point joins by normally closed node and resistance R 2 one ends of relay node J1-2, sustained diode 5 is joined with relay J 2 back one ends in parallel and one-way SCR KZ1 anode, and the other end of the other end and R2 connects positive source simultaneously; An alarm lamp P and a termination power positive pole after alarm Y is in parallel are on the normally opened contact of another relay termination node J2-1; A sustained diode 6 and a termination power positive pole after tractive magnet MQ is in parallel, other end order is to the anode of controllable silicon KZ2, the negative electrode of controllable silicon KZ2 connects power cathode, the control utmost point is succeeded electrical equipment node J2-2, the normally closed node of J2-2 connects R5 one end, the end while of the R5 other end and R3 joins with the bridge path rectification negative pole of output end of testing circuit, on the normally opened contact of another relay termination node J1-2 of R3.One termination power positive pole of resistance R 4 is on the normally opened contact of another relay termination node J2-2.

The utility model is described in further detail below in conjunction with accompanying drawing

Fig. 1 is the utility model circuit theory schematic diagram

Among the figure:

The JF--alternating current generator

The W--variable resistance

R1, R2, R3, R4, R5--resistance

J1, J2--relay

KZ1, KZ2--one-way SCR

The P--alarm lamp

The Y--alarming horn

D1, D2, D3, D4--diode

D5, D6,--fly-wheel diode

The MQ--tractive magnet

The K--switch

As shown in Figure 1, alternating current generator JF is communicated with (can by modes such as belts) as detecting element with the main shaft of grain combine wheat scourers, power supply 12V voltage can be provided by the locomotive storage battery, tractive magnet is arranged on the position of the clutch that can descend in working order in the pulling grain header or hydraulic jack joystick, the connecting relation of circuit is: alternating current generator JF output voltage signal is supplied with relay J 1 work behind bridge path rectification, negative electrode and the power cathode of one-way SCR KZ1 join, the control utmost point joins by normally closed node and resistance R 2 one ends of relay node J1-2, sustained diode 5 is joined with relay J 2 back one ends in parallel and one-way SCR KZ1 anode, and the other end of the other end and R2 connects positive source simultaneously; An alarm lamp P and a termination power positive pole after alarm Y is in parallel are on the normally opened contact of another relay termination node J21; A sustained diode 6 and a termination power positive pole after tractive magnet MQ is in parallel, other end order is to the anode of controllable silicon KZ2, the negative electrode of controllable silicon KZ2 connects power cathode, the control utmost point is succeeded electrical equipment node J2-2, the normally closed node of J2-2 connects R5 one end, the end while of the R5 other end and R3 joins with the bridge path rectification negative pole of output end of testing circuit, on the normally opened contact of another relay termination node J1 1 of R3.One termination power positive pole of resistance R 4 is on the normally opened contact of another relay termination node J2-2.

Its operation principle is: when the wheat scourers of grain header are working properly, detect, the control warning circuit is not all worked, this moment is when the wheat scourers feed quantity is excessive, the voltage of generator JF output descends with the decline of wheat scourers rotating speed, when reducing to the adhesive that to keep relay J 1 coil, contact J1-1 is a disconnection slightly, R1 is just sealed in circuit, force the J1-1 contact thoroughly to disconnect, the contact J1-2 of relay J 1 also engages with normally-closed contact simultaneously, the voltage at R2 two ends provides trigger voltage for the controllable silicon KZ1 control utmost point, because the conducting of KZ1, relay J 2 obtains operating voltage, node J2-1, the lever arm of J2-2 all engages with normally opened contact, therefore, it is luminous that indicator lamp P and alarm Y obtain voltage, report to the police, R4 also provides trigger voltage by the J2-2 contact to controllable silicon KZ2, the KZ2 conducting, after tractive magnet obtains operating voltage, the clutch or the hydraulic jack joystick of pulling grain header, (as locomotive is the hydraulic operation formula, a hydraulic jack can be installed in addition elsewhere, by seizing wire the lever arm of hydraulic jack is associated in clutch) force grain header to be stopped, harvester for wheat is not being carried wheat to wheat scourers, make wheat scourers self-digestion progressively, rotating speed raises gradually thereupon, when being elevated to certain value, the voltage of generator JF output also is elevated to the pulling force that can overcome relay J 1 spring, and node J1-1, when the lever arm of J1-2 engages with normally opened contact, J1-1 is the R1 short circuit, make adhesive more deep, J1-2 connects the R3 and the controllable silicon KZ1 control utmost point, and the negative pressure after the D1-D4 rectification, pass through R3, J1-2 provides negative pressure to the SCR control utmost point, force KZ1 to turn-off, J2 loses voltage and discharges, J2-1, the J2-2 lever arm engages with normally-closed contact, and indicator lamp extinguishes, and Y stops pronunciation and reports to the police.The negative pressure of J2-2 after the D1-D4 rectification connected by the R5 and the KZ2 control utmost point, and KZ2 turn-offs, and MQ loses the job voltage and discharges, and the hydraulic jack joystick or the clutch of grain header reset under the effect of return spring, and grain header changes normal harvesting over to.

K is a total control switch.

Achieve one's goal and adopt manually operated method, can remove control circuit (R4, R5, D6, MQKZ2 are removed), when light indication, sounding alarm, the people no longer walks grain header and cuts wheat for controlling clutch, the excessive cereal that the wheat scourers self-digestion has fed.

The utility model is simple in structure, easy to use, sends out for farming and uses grain header that good auxiliary equipment is provided.

Claims

1, a kind of grain combine anti-blocking apparatus of reporting to the police automatically, it is by testing circuit, control warning circuit and control element are formed, it is characterized in that: described testing circuit comprises that the JF alternator output voltage signal that is communicated with grain combine wheat scourers main shaft supplies with relay J 1 work behind bridge path rectification, described control warning circuit comprises that the negative electrode of one-way SCR KZ1 and power cathode join, the control utmost point joins by normally closed node and resistance R 2 one ends of relay node J1-2, sustained diode 5 is joined with relay J 2 back one ends in parallel and one-way SCR KZ1 anode, and the other end of the other end and R2 connects positive source simultaneously; An alarm lamp P and a termination power positive pole after alarm Y is in parallel are on the normally opened contact of another relay termination node J2-1; A sustained diode 6 and a termination power positive pole after tractive magnet MQ is in parallel, other end order is to the anode of controllable silicon KZ2, the negative electrode of controllable silicon KZ2 connects power cathode, the control utmost point is succeeded electrical equipment node J2-2, the normally closed node of J2-2 connects R5 one end, the end while of the R5 other end and R3 joins with the bridge path rectification negative pole of output end of testing circuit, on the normally opened contact of another relay termination node J1 1 of R3, one termination power positive pole of resistance R 4 is on the normally opened contact of another relay termination node J2-2.