CN104488458B - A kind of thresher with anti-blockage function - Google Patents
A kind of thresher with anti-blockage function Download PDFInfo
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- CN104488458B CN104488458B CN201510006385.7A CN201510006385A CN104488458B CN 104488458 B CN104488458 B CN 104488458B CN 201510006385 A CN201510006385 A CN 201510006385A CN 104488458 B CN104488458 B CN 104488458B
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- thresher
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Abstract
The invention discloses a kind of thresher with anti-blockage function, comprise Hydraulic Power Transmission System and anti-clogging electric control system.Hydraulic Power Transmission System comprises hydraulic motor, flow speed control valve, reversal valve etc.Hydraulic motor drives threshing cylinder to rotate by shaft coupling, and flow speed control valve makes threshing cylinder have stepless shift function by adjust flux.Anti-clogging electric control system comprises the pressure switch being connected to Hydraulic Power Transmission System oil circuit and the solenoid directional control valve be located on Hydraulic Power Transmission System oil circuit; when thresher blocks; Hydraulic Power Transmission System pressure increases; when pressure reaches the setting pressure of pressure switch; pressure switch circuit ON; electromagnetic switch Vavle switching oil circuit, hydraulic motor drives threshing cylinder reversion, gets rid of clogging.After failture evacuation, by the action with the special time relay that is connected of pressure switch and contact thereof, automatically recover the normal work of thresher.The present invention can improve operating efficiency and the operational reliability of thresher, eliminates safe hidden trouble.
Description
Technical field
The present invention relates to Agricultural Machinery Design and manufacture field, especially a kind of thresher.
Background technology
Thresher is the important farm machinery of crop harvesting, is also one of critical system of combine.In paddy rice, wheat, rape threshing course, to the basic demand of thresher, one is that threshing performance is high, percentage of damage is low, and two is can without the normal continuously work of blocking.
Threshing performance is relevant to the linear velocity of threshing element with percentage of damage, and linear velocity is large, and threshing performance height percentage of damage is also high.Threshing efficiency and threshing quality requirement obtain the effect that threshing performance is high and percentage of damage is low under higher threshing speed.In production, general employing uses higher threshing speed to ensure the technical scheme of threshing performance and production efficiency under ensureing the condition of lower percentage of damage.Under certain threshing kinetic energy, the intensity of material is the important indicator of its percentage of damage.The kind of material is different, moisture content is different, and its intensity is different.This just requires that the linear velocity of threshing element should according to the different cultivars of material, different water-cut variation thus guarantee that material is not broken.In current technology scheme, the linear velocity of threshing element is constant or only has limited speed and need to shut down adjustment, can not meet the needs of threshing.
On the other hand, due to reasons such as straw humidity are comparatively large, charging rate is too large, discharging is obstructed, easily there is clogging in the thresher course of work, cause thresher work to stop, affecting work efficiency, even occur the damage of actuated element.In production, anticlogging main method is the speed or the front humidity reducing straw of threshing that control input and output material by the method for machinery.But clogging still inevitably often occurs.Now can only dead halt, open the case lid of threshing cylinder, manual removal straw, reciprocating rotary cylinder, get rid of tamper.This method wastes time and energy, and also has potential safety hazard.
Summary of the invention
The invention provides a kind of thresher, it can facilitate and effectively get rid of blocking, realizes anti-blockage function.
For achieving the above object, technical scheme of the present invention is as follows:
There is a thresher for anti-blockage function, comprise Hydraulic Power Transmission System and anti-clogging electric control system.Hydraulic Power Transmission System comprises hydraulic motor, rotates to drive threshing cylinder.Anti-clogging electric control system comprises the pressure switch connecting Hydraulic Power Transmission System oil circuit and the solenoid directional control valve be located on Hydraulic Power Transmission System oil circuit; when thresher blocks; Hydraulic Power Transmission System pressure increases; when pressure reaches the setting pressure of pressure switch; pressure switch circuit ON; electromagnetic switch Vavle switching oil circuit, hydraulic motor drives threshing cylinder reversion, gets rid of clogging.
Preferably, anti-clogging electric control system also comprises the time relay being connected in series pressure switch, and time relay coil and electromagnet obtain electric, and the right oil pocket of solenoid directional control valve is connected, and oil circuit switches, and hydraulic motor and threshing cylinder reversion, get rid of clogging; Meanwhile, time relay time delay disconnects moving together contact and connects and trigger timing, and time relay timing closing break contact disconnects and trigger timing; After the time delay of setting terminates; time relay time delay disconnects moving together contact and disconnects; time relay coil and electromagnet DT1 dead electricity; meanwhile, time relay timing closing break contact closes, and electromagnet DT2 obtains electric; the left oil pocket of three-position four-way valve is connected; oil circuit switches, and hydraulic motor and thresher drum recover rotating forward work, and thresher plugging fault is got rid of.
Preferably, anti-clogging electric control system also comprises the overflow valve connecting Hydraulic Power Transmission System oil circuit, and when thresher blocking cannot be got rid of, system pressure continues to raise, and when pressure reaches the setting pressure of overflow valve, off-load opened by overflow valve, to reduce system pressure.
Preferably, described solenoid directional control valve is three-position four-way valve.
Preferably, Hydraulic Power Transmission System also comprises the flow speed control valve be located on Hydraulic Power Transmission System oil circuit, threshing cylinder main shaft is connected with hydraulic motor main shaft by shaft coupling, by regulating the opening of flow speed control valve, obtain the different pressure oil flows entering hydraulic motor, make hydraulic motor obtain different rotating speeds, realize the stepless speed regulation of threshing cylinder.
The invention has the beneficial effects as follows: the present invention conveniently gets rid of blocking effectively by anti-clogging electric control system, realizes anti-blockage function, thus can improve operating efficiency and the operational reliability of thresher, and eliminate the potential safety hazard of thresher.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention thresher hydraulic circuit.
Fig. 2 is embodiment of the present invention thresher anti-clogging electric control system figure.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Figure 1 shows that the present embodiment thresher hydraulic circuit.Thresher drum main shaft is connected with hydraulic motor 5 main shaft by shaft coupling.Regulate the opening of flow speed control valve 3, the different pressure oil flows entering hydraulic motor 5 can be obtained, make hydraulic motor obtain different rotating speeds, thus realize the stepless speed regulation of threshing cylinder.
When thresher blocks, hydraulic system pressure increases, when pressure reaches the setting pressure of pressure switch (YJ) 4; YJ circuit ON (see Fig. 2); three-position four-way valve solenoid directional control valve 2 switches oil circuit, and hydraulic motor 5 and threshing cylinder reversion, get rid of clogging.
Under extreme case, thresher blocking cannot be got rid of, and system pressure continues to raise, and when pressure reaches the setting pressure of overflow valve 6, off-load opened by overflow valve 6, and system pressure reduces, and reaches the object of protection Hydraulic Power Transmission System.
Hydraulic pump 1 by engine or motor driven, for system provides pressure oil.
If Fig. 2 is electric control system figure.During thresher blocking, hydraulic system pressure increases, and when pressure reaches the setting pressure of pressure switch (YJ) 4, YJ closes, circuit ON.Time relay coil KT and electromagnet DT1 obtains electric, and the right oil pocket of three-position four-way electromagnetic directional valve 2 is connected, and oil circuit switches, and hydraulic motor 5 and threshing cylinder reversion, get rid of clogging.Meanwhile, time relay time delay disconnects moving together contact KT1 and connects and trigger timing, and time relay timing closing break contact KT2 disconnects and trigger timing.During time delay timing, due to the realization of reversion, system pressure declines, and pressure switch (YJ) contact disconnects, and the connection of time relay moving together contact KT1 ensure that continuing of reversion.The time of time delay timing can according to threshing operating mode, and the regulation time relay time obtains.
After time delay terminates; time relay time delay disconnects moving together contact KT1 and disconnects; time relay coil KT and electromagnet DT1 dead electricity; meanwhile, time relay timing closing break contact KT2 closes, and electromagnet DT2 obtains electric; the left oil pocket of three-position four-way valve is connected; oil circuit switches, and hydraulic motor and thresher drum recover rotating forward work, and thresher plugging fault is got rid of.
If said process does not also eliminate blocking, system will be again auto-reverse--rotate forward and run, until block completely, eliminating threshing is normal.
In system debug setting up procedure, the pressure of pressure switch is lower than overflow valve pressure.Flow speed control valve flow is consistent with the speed that threshing needs.Because the setting snooze interval of the time relay can be as small as 0.01s, therefore, the requirement of rotating required time can be reached completely, get rid of the plugging fault of thresher.
The embodiment of the present invention utilizes hydraulic transmission technology, Electrical Control Technology devises brand-new thresher transmission and control system.Achieve the stepless speed regulation of thresher, meet the demand of thresher friction speed.Meanwhile, automatic reverse reversion when utilizing system jams, blocking enters normal operating conditions automatically by time delay after eliminating.Conveniently effectively get rid of blocking, reach anti-blockage function.
The beneficial effect that in above-described embodiment, technical scheme is brought has:
1) thresher drum has function of stepless speed regulation.Therefore, the thresher of this transmission system is adopted to different material as paddy rice, wheat, rape threshing have versatility.To the threshing of different humidity material, there is stronger adaptability, and there is high threshing ratio and low percentage of damage.
2) when occurring to block, thresher has auto-reverse, gets rid of the function of the normal work of the rear recovery automatically of blocking.Adopt illustrated control system, the phenomenon of thresher maintenance down because of blocking no longer occurs, can improve operating efficiency and the operational reliability of thresher, and eliminate the potential safety hazard of thresher.
3) designing technique of the present invention complicated and use, debugging technique is simple, components and parts are common, general, cheap, belong to economic and practical type technical scheme, have stronger promotional value.
Claims (5)
1. one kind has the thresher of anti-blockage function, it is characterized in that, comprise Hydraulic Power Transmission System and anti-clogging electric control system, Hydraulic Power Transmission System comprises hydraulic motor, rotate to drive threshing cylinder, anti-clogging electric control system comprises the pressure switch connecting Hydraulic Power Transmission System oil circuit and the solenoid directional control valve be located on Hydraulic Power Transmission System oil circuit, when thresher blocks, Hydraulic Power Transmission System pressure increases, when pressure reaches the setting pressure of pressure switch, pressure switch circuit ON, electromagnetic switch Vavle switching oil circuit, hydraulic motor drives threshing cylinder reversion, get rid of clogging, anti-clogging electric control system also comprises the time relay being connected in series pressure switch, and time relay coil and electromagnet DT1 obtain electric, and the right oil pocket of solenoid directional control valve is connected, and oil circuit switches, and hydraulic motor and threshing cylinder reversion, get rid of clogging, meanwhile, time relay time delay disconnects moving together contact and connects and trigger timing, and time relay timing closing break contact disconnects and trigger timing, after the time delay of setting terminates, time relay time delay disconnects moving together contact and disconnects, time relay coil and electromagnet DT1 dead electricity, meanwhile, time relay timing closing break contact closes, and electromagnet DT2 obtains electric, the left oil pocket of solenoid directional control valve is connected, oil circuit switches, and hydraulic motor and thresher drum recover rotating forward work, and thresher plugging fault is got rid of.
2. the thresher with anti-blockage function according to claim 1; it is characterized in that; anti-clogging electric control system also comprises the overflow valve connecting Hydraulic Power Transmission System oil circuit; when thresher blocking cannot be got rid of; system pressure continues to raise; when pressure reaches the setting pressure of overflow valve, off-load opened by overflow valve, to reduce system pressure.
3. the thresher with anti-blockage function according to claim 1, is characterized in that, described solenoid directional control valve is three-position four-way valve.
4. the thresher with anti-blockage function according to claim 1; it is characterized in that; Hydraulic Power Transmission System also comprises the flow speed control valve be located on Hydraulic Power Transmission System oil circuit; threshing cylinder main shaft is connected with hydraulic motor main shaft by shaft coupling; by regulating the opening of flow speed control valve; obtain the different pressure oil flows entering hydraulic motor, make hydraulic motor obtain different rotating speeds, realize the stepless speed regulation of threshing cylinder.
5. the thresher with anti-blockage function according to claim 1; it is characterized in that, after the time delay of time relay setting terminates, if thresher plugging fault is not got rid of completely; system will repeat forward and backward circulation automatically, until plugging fault is got rid of completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006385.7A CN104488458B (en) | 2015-01-07 | 2015-01-07 | A kind of thresher with anti-blockage function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510006385.7A CN104488458B (en) | 2015-01-07 | 2015-01-07 | A kind of thresher with anti-blockage function |
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| CN104488458A CN104488458A (en) | 2015-04-08 |
| CN104488458B true CN104488458B (en) | 2016-03-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104855060B (en) * | 2015-04-24 | 2016-08-17 | 南京农业大学 | Harvester cylinder fed material from being blocked fault detect and actively control method |
| CN105165935A (en) * | 2015-07-17 | 2015-12-23 | 重庆市合川区骏玥机械厂 | Fine dried noodle maker for producing fine dried noodles by using organic raw materials |
| US9955628B2 (en) * | 2015-09-25 | 2018-05-01 | Deere & Company | Reversible drive system for an agricultural machine |
| CN107155533B (en) * | 2017-06-15 | 2023-04-25 | 农业部南京农业机械化研究所 | Threshing cylinder driving control system and method of combine harvester |
| CN110773424B (en) * | 2019-10-12 | 2021-12-07 | 中国矿业大学 | Automatic control system and method for solving problem of foreign matter jamming of roller screen |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010122055A1 (en) * | 2009-04-22 | 2010-10-28 | Technische Universität Dresden | Self-propelled harvester having an electrically driven threshing drum |
| CN102714983B (en) * | 2012-06-04 | 2014-08-20 | 安徽农业大学 | Anti-blockage device of full-feed combined harvester |
| CN202707649U (en) * | 2012-07-13 | 2013-01-30 | 三一重工股份有限公司 | Concrete stirring system and concrete pumping device |
| CN103039208A (en) * | 2012-12-27 | 2013-04-17 | 曹安柏 | Hydraulically-driven threshing cylinder |
| CN103644171B (en) * | 2013-12-09 | 2016-08-17 | 中联重科股份有限公司 | Hydraulic motor blocking rotation control system and blocking rotation method, engineering machinery |
| CN204408995U (en) * | 2015-01-07 | 2015-06-24 | 湖南农业大学 | A kind of thresher with anti-blockage function |
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