CN110276163B - Feeding auger fault simulation system and method for combine harvester - Google Patents
Feeding auger fault simulation system and method for combine harvester Download PDFInfo
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- 238000004088 simulation Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 69
- 238000001228 spectrum Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 abstract description 14
- 238000003306 harvesting Methods 0.000 abstract description 6
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- 238000012360 testing method Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 238000001816 cooling Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000005284 excitation Effects 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
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- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 241000209140 Triticum Species 0.000 description 4
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- 235000009566 rice Nutrition 0.000 description 4
- 238000013500 data storage Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
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Abstract
The invention relates to the technical field of agricultural machinery, and discloses a feeding auger fault simulation system and method of a combine harvester, wherein the system comprises the following steps: feeding screw feeder and loading device; the feeding auger is arranged on the header body, and the loading device comprises a brake; the brake is sleeved on the driving shaft of the feeding screw feeder, and the brake is connected with the driving shaft through a key. According to the feeding auger fault simulation system and method for the combine harvester, provided by the invention, the loading device is connected to the driving shaft, so that a preset load can be applied to the driving shaft, feeding auger fault simulation is performed, test data of the feeding auger under different fault conditions can be conveniently obtained, feeding auger blocking data can be obtained anytime and anywhere, and the limitation of harvest seasons and regions is avoided; convenient operation, low cost and high scientific research value.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a feeding auger fault simulation system and method of a combine harvester.
Background
Combine is the main key force for harvesting grain crops, and the use of combine is one of the criteria for measuring agricultural modernization. With the continuous development of agricultural mechanization, although the usage amount and the operation efficiency of the combine harvester are obviously improved, various faults are easy to occur in the working process due to the complex structure and the severe operation working condition of the combine harvester. The feeding screw feeder is an important component part of the cutting table, is a starting point of material conveying of the combine harvester, and has the operation smoothness which is extremely easy to be influenced by complex working conditions such as grain density, water content, stubble cutting height, running speed and the like. When the feeding amount of the combine harvester is too large or the cutting table eats soil, the feeding screw feeder is extremely easy to cause blockage faults. The feeding screw feeder blocks up the emergence of trouble, not only can lead to the functional failure of cutting knife and reel, causes conveyer belt's wearing and tearing moreover, can cause the drive chain fracture when serious.
At present, researches on feeding auger faults of rice and wheat type combine harvesters are focused on feeding auger rotating speed information detection, display and blockage early warning. A scholars develop a set of monitoring system for the rotation speed, the advancing speed and the height of the cutting table of the screw feeder by using the CAN bus communication technology. A set of blockage fault early warning system taking the first-order difference rate and the slip rate of the screw conveyer rotating speed as fault characteristics is designed. A combine fault diagnosis system is designed based on the FNN algorithm.
The design and optimization of the feeding auger early warning system, the selection of blocking fault characteristics, the establishment of a fault database and a blocking early warning model are all based on a large amount of field blocking data. The seasonality of combine operation results in that the researcher can only acquire the information of feeding screw faults in the harvesting season, the data acquisition is difficult, and the repeatability is poor.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to provide a feeding screw feeder fault simulation system and method for a combine harvester, which are used for solving or partially solving the problems that the acquisition of feeding screw feeder fault information can only be carried out in a harvesting season, the data acquisition is difficult and the repeatability is poor due to the working seasonality of the combine harvester.
(II) technical scheme
In order to solve the technical problem, according to a first aspect of the present invention, there is provided a feeding auger fault simulation system of a combine harvester, including: feeding screw feeder and loading device; the feeding auger is arranged on the header body, and the loading device comprises a brake; the brake is sleeved on the driving shaft of the feeding screw feeder, and the brake is connected with the driving shaft through a key.
On the basis of the scheme, the brake is arranged at one end of the header body, a fixed seat is arranged at the top of the side wall at one end of the header body, the fixed seat is fixedly connected with the top of the first fixed plate, the bottom of the first fixed plate is fixedly connected with the second fixed plate, the second fixed plate is sleeved on the driving shaft and is opposite to the stator at the periphery of the brake, and the stator of the brake is uniformly and fixedly connected with the second fixed plate along the circumferential direction.
On the basis of the scheme, a cushion block is arranged between the bottom of the first fixed plate and the top of the second fixed plate; the fixing base is connected with the top of the first fixing plate through bolts, and the first fixing plate is provided with a long-strip-shaped mounting hole at the joint along the vertical direction.
On the basis of the scheme, the method further comprises the following steps: a cooling water tank; a first pipeline is arranged in the brake, an inlet of the first pipeline is connected with one end of an inlet water pipe, and the other end of the inlet water pipe is inserted into the cooling water tank; the outlet of the first pipeline is connected with one end of an outlet water pipe, and the other end of the outlet water pipe is inserted into the cooling water tank; the other end of the inlet water pipe or the other end of the outlet water pipe is connected with a first submersible pump, and the first submersible pump is fixed at the bottom of the cooling water tank.
On the basis of the scheme, the method further comprises the following steps: a cooler; a second pipeline is arranged in the cooler, an inlet of the second pipeline is connected with one end of a cooling water inlet pipe, and the other end of the cooling water inlet pipe is inserted into the cooling water tank; the outlet of the second pipeline is connected with one end of a cooling water outlet pipe, and the other end of the cooling water outlet pipe is inserted into the cooling water tank; the other end of the cooling water inlet pipe or the other end of the cooling water outlet pipe is connected with a second submersible pump, and the second submersible pump is fixed at the bottom of the cooling water tank.
In the above aspect, the cooler includes an air cooler; the outer side wall of the cooling water tank is fixedly connected with a base, and the cooler is fixed through the base.
On the basis of the scheme, the method further comprises the following steps: the device comprises a mode setting module, a communication module, a storage module, a potentiometer and a controller; the mode setting module is used for externally inputting a control instruction of a manual or automatic mode of the brake; the mode setting module and the potentiometer are respectively connected with the communication module, and the communication module is used for sending the control instruction and the numerical value of the potentiometer to the controller; the storage module is connected with the controller and used for storing load spectrum data preset in the automatic mode of the brake.
On the basis of the scheme, the method further comprises the following steps: a data collector and a display; the data acquisition device is respectively arranged on the inlet water pipe and the outlet water pipe and is used for acquiring temperature signals of an inlet section and an outlet section of the first pipeline; the data acquisition device is electrically connected with the controller, and the controller is electrically connected with the brake; the display is connected with the controller and used for displaying the temperature signal.
On the basis of the scheme, a first three-way valve is arranged on a pipe section of the inlet water pipe, which is positioned outside the cooling water tank, in series; a second three-way valve is arranged on the pipe section of the outlet water pipe, which is positioned outside the cooling water tank, in series; the first three-way valve and the second three-way valve are respectively provided with the data collector.
The second aspect of the invention provides a method for simulating the feeding screw feeder fault of a combine harvester, which is based on the scheme, and comprises the following steps: setting a brake operation mode; when the brake is in a manual mode, the manual adjustment potentiometer is used for controlling the brake to apply a simulated braking force to the feeding auger; and when the brake is in an automatic mode, the brake applies a simulated braking force to the feeding screw according to the preset load spectrum data.
(III) beneficial effects
According to the feeding auger fault simulation system and method for the combine harvester, provided by the invention, the loading device is connected to the driving shaft, so that a preset load can be applied to the driving shaft, feeding auger fault simulation is performed, test data of the feeding auger under different fault conditions can be conveniently obtained, feeding auger blocking data can be obtained anytime and anywhere, and the limitation of harvest seasons and regions is avoided; convenient operation, low cost and high scientific research value.
Drawings
FIG. 1 is an overall schematic diagram of a combine feeding auger fault simulation system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the assembly of a brake and a header body according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the connection of a cooling water tank and a cooler according to an embodiment of the present invention;
FIG. 4 is a schematic view of an inlet pipe assembly according to an embodiment of the present invention;
FIG. 5 is a schematic diagram showing the assembly of an outlet water pipe according to an embodiment of the present invention;
FIG. 6 is a schematic view of a cooler fixed base in an embodiment of the present invention;
FIG. 7 is a schematic diagram of a control and monitoring system according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a data display and processing module according to an embodiment of the invention.
Reference numerals illustrate:
1-a driving shaft; 2-a header body; 3-a brake;
4-a cooling water tank; 5-an inlet water pipe; 6, an outlet water pipe;
7-a first submersible pump; 8-cooling the water inlet pipe; 9, cooling the water outlet pipe;
10-a second submersible pump; 11-a cooler; 12-a base;
13-pulling the plate; 14-external thread straight-through pagoda pipe joint; 15-a first three-way valve;
16-a silk tube; 17-internal thread straight-through pagoda pipe joint; 18-a second three-way valve;
31-a fixed seat; 32-a first fixing plate; 33-cushion blocks;
34-a second fixing plate.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
An embodiment of the present invention provides a fault simulation system for a feeding auger of a combine harvester, referring to fig. 1, the system includes: feeding screw feeder and loading device; the feeding screw feeder is arranged on the header body 2. The structure of the feeding screw feeder and the header body 2 is identical to that of the combine harvester. The loading device comprises a brake 3; the brake 3 is sleeved on the driving shaft 1 of the feeding screw. The driving shaft 1 is a rotating shaft for driving the feeding screw conveyor to rotate. And the brake 3 is connected with the driving shaft 1 by a key. The loading device is used for applying load to the driving shaft 1 to simulate the resistance in the rotation process of the feeding screw, and further simulate the actual operation condition of the feeding screw.
The brake 3 is a braking member that applies resistance to the drive shaft 1 of the feed auger to increase the rotational load. The brake 3 and the driving shaft 1 are fixedly positioned circumferentially through a key connection structure, and can be flat keys or spline. That is, the brake 3 is fixed to the drive shaft 1 in the circumferential direction and rotates integrally therewith. Shaft sleeves or shaft shoulders can be arranged on the driving shaft 1 and on two sides of the brake 3, and the brake 3 and the driving shaft 1 can be positioned through the shaft sleeves and the shaft shoulders along the axial direction. To prevent the displacement of the brake 3 and ensure the normal operation of the brake 3.
Further, the load applied to the drive shaft 1 by the brake 3 is controllable. The brake 3 is operable in accordance with a preset load, and applies the preset load to the drive shaft 1. The dynamic load can be preset, the dynamic load can be applied to the driving shaft 1 by the brake 3, and various load change conditions can be simulated to obtain test data.
According to the feeding auger fault simulation system of the combine harvester, the loading device is connected to the driving shaft 1, a preset load can be applied to the driving shaft 1, feeding auger fault simulation is conducted, test data of the feeding auger under different fault conditions are obtained, feeding auger blocking data can be obtained anytime and anywhere, and the limitation of harvest seasons and regions is avoided; convenient operation, low cost and high scientific research value.
Further, compared with the existing combine harvester test bed, the system can realize the presetting of feeding screw blocking faults on the whole machine; dynamic loading of the feeding screw feeder of the header can be realized according to the field load spectrum data of the header, and the actual working condition of the feeding screw feeder is simulated.
Further, referring to fig. 2, the stopper 3 is disposed at one end of the header body 2, and a fixing seat 31 is disposed at the top of the sidewall of one end of the header body 2. The fixing base 31 is fixedly connected with the top of the first fixing plate 32, and the bottom of the first fixing plate 32 is fixedly connected with the second fixing plate 34. The second fixing plate 34 is sleeved on the driving shaft 1 and is arranged opposite to the stator at the periphery of the brake 3. The stator of the brake 3 is uniformly and fixedly connected with the second fixing plate 34 in the circumferential direction. A spacer 33 is provided between the bottom of the first fixing plate 32 and the top of the second fixing plate 34.
Further, a spacer 33 is provided between the bottom of the first fixing plate 32 and the top of the second fixing plate 34. The fixing base 31 is connected with the top of the first fixing plate 32 through bolts, and the first fixing plate 32 is provided with a long-strip-shaped mounting hole along the vertical direction at the connecting position.
The fixing base 31, the first fixing plate 32, and the second fixing plate 34 mainly function to fix the stopper 3 to the header body 2. Specifically, the stator portion of the brake 3 is fixed on the second fixing plate 34 by six bolts and nuts uniformly distributed in the circumferential direction; the first fixing plate 32 is connected with the brake 3 fixing seat 31 through bolts and nuts; the fixing seat 31 is welded on the header body 2. The spacer 33 may be interposed between the second fixing plate 34 and the first fixing plate 32 by means of welding, screw connection, or the like.
Because the first fixing plate 32 is connected with the side wall of the header body 2, the cushion block 33 is arranged to increase the distance between the brake 3 and the side wall of the header body 2, and prevent the header body 2 from affecting the operation of the brake 3, thereby ensuring the smooth operation of the whole system. The cushion block 33 may be a cushion pipe, or may be another member capable of supporting, and is not limited thereto.
Further, the height of the feeding screw conveyor on the header body 2 can be adjusted to adapt to different application situations. In order to realize the up-down height adjustment of the brake 3 along with the feeding screw driving shaft 1, a long-strip-shaped mounting hole is formed in the first fixing plate 32; the position connected with the fixing seat 31 can be adjusted to adapt to the height adjustment of the feeding screw.
Further, the brake 3 includes a rotor portion at a central portion and a stator portion at a periphery of the rotor, which are rotatable relative to each other. The stator part is fixedly connected with the header body, the rotor part is connected with the driving shaft 1 through a key, and the stator part and the header body integrally rotate.
Further, with reference to fig. 3, the fault simulation system for the feeding auger of the combine harvester further includes: and a cooling water tank 4. The cooling water tank 4 stores therein cooling water for cooling the brake 3. The brake 3 is internally provided with a first pipeline, an inlet of the first pipeline is connected with one end of an inlet water pipe 5, and the other end of the inlet water pipe 5 is inserted into the cooling water tank 4. The outlet of the first pipeline is connected with one end of an outlet water pipe 6, and the other end of the outlet water pipe 6 is inserted into the cooling water tank 4. The other end of the inlet water pipe 5 or the other end of the outlet water pipe 6 is connected with a first submersible pump 7, and the first submersible pump 7 is fixed at the bottom of the cooling water tank 4.
The first conduit is provided with an inlet and an outlet on the side wall of the brake 3. The cooling water in the cooling water tank 4 can be introduced into the first pipeline through the inlet water pipe 5 under the driving of the first submersible pump 7. The cooling water cools the brake 3 in the first line and then flows into the cooling water tank 4 again from the outlet water pipe 6. The method can provide an adaptive operation environment for the brake 3 and ensure smooth and efficient operation of the brake 3.
Further, on the basis of the above embodiment, the feeding auger fault simulation system of the combine harvester further includes: a cooler 11; the cooler 11 is used for cooling the cooling water in the cooling water tank 4. The cooler 11 is internally provided with a second pipeline, an inlet of the second pipeline is connected with one end of the cooling water inlet pipe 8, and the other end of the cooling water inlet pipe 8 is inserted into the cooling water tank 4; the outlet of the second pipeline is connected with one end of a cooling water outlet pipe 9, and the other end of the cooling water outlet pipe 9 is inserted into the cooling water tank 4; the other end of the cooling water inlet pipe 8 or the other end of the cooling water outlet pipe 9 is connected with a second submersible pump 10, and the second submersible pump 10 is fixed at the bottom of the cooling water tank 4.
The cooling water in the cooling water tank 4 can enter the second pipeline through the cooling water inlet pipe 8 under the driving of the second submersible pump 10. The cooling water flows into the cooling water tank 4 again from the cooling water outlet pipe 9 after being cooled in the second pipeline. The cooler 11 is provided to cool down the cooling water, and a low temperature state of the cooling water can be maintained to ensure the effect of cooling the brake 3.
Further, on the basis of the above embodiment, the cooler 11 includes an air cooler 11; referring to fig. 6, a base 12 is fixedly coupled to an outer sidewall of the cooling water tank 4, and a cooler 11 is fixed by the base 12.
Two bases 12, namely a front base 12 and a rear base 12, can be arranged on the outer side wall of the cooling water tank 4 at intervals, and the two bases 12 are vertically connected with the outer side wall of the cooling water tank 4. The front pulling plate 13 is respectively connected with one end of the front base 12 far away from the water tank and the outer side wall of the water tank in a fixed mode such as welding, threaded connection and the like; the rear pulling plate 13 is respectively connected with one end of the rear base 12 far away from the water tank and the outer side wall of the water tank in a fixed mode such as welding, threaded connection and the like. The front base 12 and the rear base 12 are located on both sides of the bottom of the cooler 11. The cooler 11 is respectively connected with the front base 12 and the rear base 12 through bolts and nuts; its main function is to fix the cooler 11 to the side wall of the tank. The pipeline is convenient to set up, and the overall structure is more compact and integrated.
Further, on the basis of the above embodiment, the feeding auger fault simulation system of the combine harvester further includes: the device comprises a mode setting module, a communication module, a storage module, a potentiometer and a controller. The mode setting module is used for externally inputting a control instruction of a manual or automatic mode of the brake 3; the mode setting module and the potentiometer are respectively connected with the communication module, and the communication module is used for sending a control instruction and the numerical value of the potentiometer to the controller; the storage module is connected with the controller and is used for storing load spectrum data preset during the automatic mode of the brake 3.
The mode setting module is mainly used for setting a control mode of the brake 3, and comprises a manual control mode and a load spectrum control mode. The mode setting module can be two keys or switches for selecting a manual control mode or a load spectrum control mode respectively.
Further, on the basis of the above embodiment, the feeding auger fault simulation system of the combine harvester further includes: a data collector and a display; the inlet water pipe 5 and the outlet water pipe 6 are respectively provided with a data collector and a temperature sensor for collecting temperature signals of an inlet section and an outlet section of the first pipeline; the data acquisition device is electrically connected with the controller, and the controller is electrically connected with the brake 3; the display is connected with the controller and used for displaying the temperature signal. The operation of the brake 3 is determined and controlled by monitoring the temperature signals of the inlet and outlet sections of the first line. When the monitored temperature signal is only excessive, the brake 3 can be controlled to stop operating so as to prevent the brake 3 from being damaged or not operating normally.
On the basis of the embodiment, further, a first three-way valve 15 is arranged on a pipe section of the inlet water pipe 5 positioned outside the cooling water tank 4 in series; a second three-way valve 18 is arranged on the pipe section of the outlet water pipe 6, which is positioned outside the cooling water tank 4, in series; the first three-way valve 15 and the second three-way valve 18 are respectively provided with a data collector.
Specifically, referring to fig. 4, the inlet water pipe 5 connected to the inlet of the first pipeline is divided into two sections, a first three-way valve 15 is disposed between the two sections, and an external thread straight-through pagoda pipe joint 14, a thread pipe 16 and an internal thread straight-through pagoda pipe joint 17 may be disposed between the two sections, for connecting to form a passage to continuously supply cooling water to the brake 3. Wherein, two ends of the first section of the inlet water pipe 5 are respectively fastened on an inlet of the first pipeline of the brake 3 and the external thread straight-through pagoda pipe joint 14 through a hose clamp; the external thread straight-through pagoda pipe joint 14 is connected with one end of a first internal thread tee through DN-15 type pipe threads; the other end of the first internal thread tee is connected with a thread pipe 16 through threads; wherein the wire tube 16 passes through the upper cover of the water tank and is fastened on the upper cover of the water tank by a nut; the other end of the through-wire 16 is connected to the first submersible pump 7 via a second section of the inlet water pipe 5.
Referring to fig. 5, the outlet water pipe 6 connected to the outlet of the first pipeline can be divided into two sections, a second three-way valve 18 is arranged between the two sections, and an external thread straight-through pagoda pipe joint 14, a second internal thread three-way pipe and a silk pipe 16 can also be arranged between the two sections, so that a main function is to form a passage to bring heat generated by the brake 3 back to the water tank. One end of the first section of the outlet water pipe 6 is fastened on the outlet water nozzle of the first pipeline through a hose clamp, and the other end is fastened on the external thread straight-through pagoda pipe joint 14; the second internal thread tee is respectively connected with the external thread straight-through pagoda joint and the thread passing pipe 16 through threads; the other end of the silk tube 16 passes through the water tank and can be connected with the second section of the outlet water tube 6; when the first submersible pump 7 is arranged on the inlet water pipe 5, the outlet water pipe 6 can be provided with only one section, namely the other end of the wire pipe 16 penetrates through the water tank. Further, a data collector may be provided at the third outlet of the first three-way valve 15 and the second three-way valve 18.
The second submersible pump 10, the water inlet pipe of the cooler 11, the water outlet pipe of the cooler 11 and the cooler 11 are connected to form a cooling water path, and the main function of the cooling water path is forced heat dissipation of cooling water. The second submersible pump 10 is adsorbed at the bottom of the water tank through a sucker; the second submersible pump 10 is connected with the threading pagoda joint through a water pipe, the other end of the threading pagoda joint penetrates through the water tank, and is connected with the inlet of a second pipeline through a pipeline to form a cooling water inlet pipe 8; the cooler 11 bracket is welded on the side wall of the water tank; the air cooler 11 is connected with the air cooler 11 bracket through bolts and nuts. The connection mode of the water inlet pipe of the cooler 11 and the water outlet pipe of the cooler 11 can be consistent with the connection mode of the water inlet pipe 5 of the brake 3, and the description is omitted. The first submersible pump 7 and the second submersible pump 10 can be adsorbed at the bottom of the water tank through sucking discs and placed in water.
Further, referring to fig. 7, a feeding auger fault simulation system of a combine harvester further includes a control and monitoring system, wherein the control and monitoring system is composed of a data acquisition module, namely a data acquisition device, a data processing and displaying module, and a control module, namely a controller. The data acquisition module is mainly used for acquiring the temperatures of an outlet and an inlet of the brake 3 and consists of two PT1000 platinum thermal resistors and a temperature transmitter; the two PT1000 platinum thermal resistors are respectively connected to the first three-way valve 15 and the second three-way valve 18 through pipe threads DN-15; the temperature transmitter mainly converts the acquired temperature value into a voltage value which can be measured by the data processing and displaying module; the temperature range which can be acquired by PT1000 platinum thermal resistor is-20-100 ℃; the supply voltage of the temperature transmitter is DC12V, and the convertible voltage range is DC0-3.3V.
Referring to fig. 8, the data processing and displaying module includes a mode setting module, a data displaying module, i.e. a display, a data storage module, a communication module, a power module, and a potentiometer; the data display module mainly converts the collected voltage value into a temperature value and displays the temperature values of the inlet and the outlet of the first pipeline of the brake 3. The data storage module is mainly used for storing the converted temperature value and can be an SD card or other components with storage functions; the communication module mainly adopts a max-485 chip to transmit control instructions of a manual control mode and a load spectrum control mode to the control module; the power supply module is divided into four parts, one part is used for supplying power to the data processing and display module, and the voltage of the power supply module is DC12V; a part of the power is supplied by the first submersible pump 7 and the second submersible pump 10, and the voltage is DC12V; one part is the power supply of the temperature transmitter; one part is a power switch of the data processing and displaying module; the potentiometer is mainly in manual mode controlled by the control module to control the brake 3.
The control module mainly converts the received control instruction into an excitation current value, and outputs the excitation current value to the brake 3, wherein the input voltage AC220V plus or minus 20%, the output voltage 0-40V and the output current 0-3A are input.
On the basis of the above embodiment, further, a method for simulating a fault of a feeding auger of a combine harvester, based on the system for simulating a fault of a feeding auger of a combine harvester according to any one of the above embodiments, includes: setting a brake 3 operation mode; when the brake 3 is in a manual mode, the brake 3 is controlled by manually adjusting a potentiometer to apply a simulated braking force to the feeding auger; when the brake 3 is in the automatic mode, the brake 3 applies a simulated braking force to the feeding auger according to the preset load spectrum data.
Specifically, the working process in the manual mode and the load spectrum mode is as follows: when a power switch of the data processing and displaying module is pressed down, the temperature transmitter, the data processing and displaying module, the first submersible pump 7 and the second submersible pump 10 start to work, the temperature transmitter converts a temperature value acquired by the platinum thermal resistor of the PT1000 into a voltage value, and after the temperature value is acquired by the data processing and displaying module, the data displaying module and the data storing module respectively display and store the temperature value of the platinum thermal resistor of the PT 1000; comparing the temperature value with a preset threshold, for example, setting the threshold to 60 ℃, and if the temperature value is higher than 60 ℃, setting the control mode to be inoperative; below 60 ℃, the control mode setting starts to work. A preferred threshold range, for example 35 c, may be set, and if the temperature is below 35 c, the control mode setting begins to operate and this temperature range is the preferred operating range for the brake 3.
When the manual mode is selected, the potentiometer can work normally; the data processing and displaying module transmits the numerical value of the potentiometer to the control module through the communication module; the control module converts the value of the potentiometer into the excitation current and loads the excitation current to the brake 3; in the manual mode, the potentiometer can be rotated to the maximum value to simulate the blocking fault of the roller; when a load spectrum working mode is selected, the data processing and displaying module reads load spectrum data stored in the SD card, the load spectrum data are transmitted to the control module through the communication module, the control module converts the data value of the load spectrum into the excitation current and loads the excitation current to the brake 3; in the load spectrum mode, dynamic loading of the brake 3 can be achieved.
On the basis of the embodiment, the embodiment further provides a feeding screw blocking fault simulation system and method of the rice and wheat combine harvester, which are small in size, convenient to install and simple and convenient to operate, and comprises a feeding screw driving shaft 1, a loading device, a header body 2, a cooling system and a control and monitoring system; the loading device is responsible for applying load to the feeding screw feeder driving shaft 1 and comprises a brake 3 and a brake 3 fixing plate; the brake 3 is arranged on the feeding screw feeder driving shaft 1, positioned circumferentially by keys and positioned axially by shaft sleeves and shaft shoulders; the brake 3 is arranged on the header body 2 through a brake 3 fixing plate; the cooling system consists of a first pipeline, an inlet water pipe 5, an outlet water pipe 6 and a cooling water path.
Further, the brake 3 fixing plate comprises a brake 3 lower fixing plate, a brake 3 upper fixing plate, a pad pipe and a brake 3 fixing seat 31; the lower fixing plate of the brake 3 is connected with the brake 3 through six uniformly distributed bolts and nuts; the cushion pipe is arranged between the lower fixed plate of the brake 3 and the upper fixed plate of the brake 3; the cushion pipe is respectively connected with an upper fixing plate and a lower fixing plate of the brake 3 in a welding mode; the upper fixing plate of the brake 3 is connected with the fixing seat 31 of the brake 3 through bolts and nuts; the fixed seat 31 of the brake 3 is arranged between the header body 2 and the fixed plate on the brake 3 and is fixed on the header body 2 in a welding mode.
Further, the control and monitoring system consists of a data acquisition module, a data processing and displaying module and a control module; the data acquisition module mainly comprises PT1000 platinum thermal resistor and a temperature transmitter; the data processing and displaying module is composed of a control mode setting module, a data displaying module, a data storage module, a communication module, a power module and a potentiometer; the control module is connected with the wiring terminal of the brake 3 through a 2-core power line.
The embodiment aims to provide a feeding screw blocking fault simulation system and method for a rice and wheat combine harvester, which are small in size, convenient to install and convenient to operate, can eliminate seasonal limitation of data acquisition and achieve feeding screw blocking Tian Fuzai working condition simulation and blocking fault simulation through simple operation, and are convenient for scientific research.
The feeding screw blocking fault simulation system and method of the rice and wheat combine harvester can realize the presetting of feeding screw blocking faults on the whole harvester; dynamic loading of the feeding screw feeder of the header can be realized according to the field load spectrum data of the header, and the actual working condition of the feeding screw feeder is simulated; simple structure, convenient operation and reliable performance. Not only can save manpower and material resources and improve the reliability and stability of the operation of the harvester, but also has important significance for promoting the development of the combine harvester and realizing the modernization of agricultural production.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. A combine feeding auger fault simulation system, comprising: feeding screw feeder and loading device; the feeding auger is arranged on the header body, and the loading device comprises a brake; the brake is sleeved on the driving shaft of the feeding screw feeder and is connected with the driving shaft through a key;
the feeding auger fault simulation system of the combine harvester further comprises: the device comprises a mode setting module, a communication module, a storage module, a potentiometer and a controller; the mode setting module is used for externally inputting a control instruction of a manual or automatic mode of the brake; the mode setting module and the potentiometer are respectively connected with the communication module, and the communication module is used for sending the control instruction and the numerical value of the potentiometer to the controller; the storage module is connected with the controller and used for storing load spectrum data preset in an automatic mode of the brake;
the brake is arranged at one end of the header body, a fixed seat is arranged at the top of the side wall at one end of the header body, the fixed seat is fixedly connected with the top of the first fixed plate, the bottom of the first fixed plate is fixedly connected with the second fixed plate, the second fixed plate is sleeved on the driving shaft and is opposite to the stator at the periphery of the brake, and the stator of the brake is uniformly and fixedly connected with the second fixed plate along the circumferential direction.
2. The combine feeding auger fault simulation system according to claim 1, wherein a cushion block is provided between the bottom of the first fixed plate and the top of the second fixed plate; the fixing base is connected with the top of the first fixing plate through bolts, and the first fixing plate is provided with a long-strip-shaped mounting hole at the joint along the vertical direction.
3. The combine feed auger fault simulation system of claim 1, further comprising: a cooling water tank; a first pipeline is arranged in the brake, an inlet of the first pipeline is connected with one end of an inlet water pipe, and the other end of the inlet water pipe is inserted into the cooling water tank; the outlet of the first pipeline is connected with one end of an outlet water pipe, and the other end of the outlet water pipe is inserted into the cooling water tank; the other end of the inlet water pipe or the other end of the outlet water pipe is connected with a first submersible pump, and the first submersible pump is fixed at the bottom of the cooling water tank.
4. A combine feed auger fault simulation system according to claim 3, further comprising: a cooler; a second pipeline is arranged in the cooler, an inlet of the second pipeline is connected with one end of a cooling water inlet pipe, and the other end of the cooling water inlet pipe is inserted into the cooling water tank; the outlet of the second pipeline is connected with one end of a cooling water outlet pipe, and the other end of the cooling water outlet pipe is inserted into the cooling water tank; the other end of the cooling water inlet pipe or the other end of the cooling water outlet pipe is connected with a second submersible pump, and the second submersible pump is fixed at the bottom of the cooling water tank.
5. The combine feed auger fault simulation system according to claim 4, wherein the cooler includes an air cooler; the outer side wall of the cooling water tank is fixedly connected with a base, and the cooler is fixed through the base.
6. A combine feed auger fault simulation system according to claim 3, further comprising: a data collector and a display; the data acquisition device is respectively arranged on the inlet water pipe and the outlet water pipe and is used for acquiring temperature signals of an inlet section and an outlet section of the first pipeline; the data acquisition device is electrically connected with the controller, and the controller is electrically connected with the brake; the display is connected with the controller and used for displaying the temperature signal.
7. The combine feeding auger fault simulation system according to claim 6, wherein a first three-way valve is provided in series on a pipe section of the inlet water pipe outside the cooling water tank; a second three-way valve is arranged on the pipe section of the outlet water pipe, which is positioned outside the cooling water tank, in series; the first three-way valve and the second three-way valve are respectively provided with the data collector.
8. A method for simulating the fault of a feeding screw feeder of a combine harvester, which is characterized by comprising the following steps of:
setting a brake operation mode;
when the brake is in a manual mode, the manual adjustment potentiometer is used for controlling the brake to apply a simulated braking force to the feeding auger;
and when the brake is in an automatic mode, the brake applies a simulated braking force to the feeding screw according to the preset load spectrum data.
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