Grain combine harvester

Abstract

The invention provides a grain combine harvester, and relates to the technical field of grain harvesting equipment, the grain combine harvester comprises a walking mechanism, a grain overturning mechanism, a telescopic harvesting mechanism, a transportation and conveying mechanism, a crushing and separating mechanism and a control box, the left end of the walking mechanism is fixedly provided with the telescopic harvesting mechanism; a grain overturning mechanism is fixedly arranged on the left side of the top of the telescopic harvesting mechanism, the right output end of the telescopic harvesting mechanism fixedly communicates with a conveying and conveying mechanism, and the right end of the conveying and conveying mechanism fixedly communicates with a crushing and separating mechanism. The walking mechanism, the grain overturning mechanism, the telescopic harvesting mechanism, the conveying mechanism and the crushing and separating mechanism are electrically connected with the control box, centralized control is achieved through the control box, and the operation process is simplified. The telescopic harvesting mechanism can adjust the harvesting range according to the actual situation, is suitable for grain harvesting of farmlands of different scales, and improves the harvesting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of grain harvesting equipment, and in particular to a grain combine harvester. Background Art

[0002] Grain combine harvesters are mainly used to harvest food crops such as rice, wheat, and corn, as well as some cash crops such as rapeseed and soybeans. During field operations, combine harvesters can complete multiple processes such as cutting, threshing, separating, cleaning, bagging or unloading grain, greatly improving agricultural production efficiency. With the development of agricultural mechanization, grain combine harvesters have become an indispensable and important tool for modern agriculture.

[0003] Although grain combine harvesters have made significant progress, there are still some shortcomings in the existing solutions, mainly including the following aspects: The design and production of domestic grain combine harvesters are still mainly small and medium-sized traditional models that can complete basic harvesting functions. They can only harvest grains within a fixed range and cannot perform telescopic harvesting to adapt to different harvesting environments or change the harvesting range.

[0004] Some domestic grain combine harvesters are prone to malfunction during long-term use, affecting the continuity and stability of agricultural production.

[0005] Unsatisfactory threshing and separation effects: Some existing grain combine harvesters have problems such as low efficiency and high loss rate in the threshing and separation process. Low degree of intelligence: Some existing grain combine harvesters still have deficiencies in intelligence. Summary of the invention

[0006] The present invention provides a grain combine harvester to solve at least one of the technical problems raised by the above background technology.

[0007] In order to solve the above technical problems, the present invention provides a grain combine harvester, including: a walking mechanism, a grain overturning mechanism, a telescopic harvesting mechanism, a transport and transmission mechanism, a crushing and separation mechanism and a control box, the left end of the walking mechanism is fixedly provided with a telescopic harvesting mechanism, the top left side of the telescopic harvesting mechanism is fixedly provided with a grain overturning mechanism, the right output end of the telescopic harvesting mechanism is fixedly connected to the transport and transmission mechanism, the right end of the transport and transmission mechanism is fixedly connected to the crushing and separation mechanism, and the walking mechanism, the grain overturning mechanism, the telescopic harvesting mechanism, the transport and transmission mechanism, the crushing and separation mechanism are electrically connected to the control box respectively.

[0008] Preferably, the walking mechanism includes: a chassis and electric lifting legs, four vertical electric lifting legs are fixedly installed at the four corners of the chassis, each electric lifting leg is rotatably connected to a walking wheel, a pair of mounting frames are fixedly installed symmetrically front and back at the left end of the bottom of the chassis, a material collecting trolley bag is fixedly installed on the left end of the mounting frame, a counterweight block is fixedly installed on the right side of the top of the chassis, and a grain storage box is fixedly installed on the left side of the counterweight block on the chassis.

[0009] Preferably, the grain overturning mechanism includes: an electric lifting column, a pair of electric lifting columns are symmetrically fixedly installed on the top of the left end of the material collecting cart pocket, a C-shaped bracket is fixedly installed on the top of the electric lifting column, the left end of the C-shaped bracket is rotatably connected to a rotating shaft along the front and rear direction, a plurality of material removing rods are fixedly installed on the outer surface of the rotating shaft, a layer of protective net is fixedly installed in the middle of the material removing rod, a pulley is fixedly installed at the front end of the rotating shaft, a motor is fixedly installed at the right end of the C-shaped bracket, a pulley is installed at the front end of the output shaft of the motor, and the pulley is connected to the pulley through a belt.

[0010] Preferably, the telescopic harvesting mechanism comprises: a sliding telescopic mechanism and a harvesting assembly; Sliding and telescopic mechanism: a screw mounting seat, a screw mounting seat is fixedly installed in the center of the chassis along the left and right directions, a screw 1 is rotatably connected inside the screw mounting seat along the left and right directions, a sliding block 1 is threadedly connected to the screw 1, and the sliding block 1 is slidably connected to the screw mounting seat left and right, the left end of the bottom of the sliding block 1 is fixedly connected to a push rod 1 along the left and right directions, the push rod 1 slides left and right and passes through the right wall of the material receiving cart pocket, and the left end of the push rod 1 is fixedly connected to an L-shaped support.

[0011] Preferably, two groups of harvesting components are symmetrically arranged on the front and back of the L-shaped support, and the harvesting component on the front side includes: a servo motor, a servo motor is fixedly installed at the left bottom center of the L-shaped support, the front output shaft end of the servo motor is fixedly connected to a worm gear 1, the front end of the L-shaped support is rotatably connected to a vertical axis 1, the left end of the vertical axis 1 is fixed to a cross arm 1, the middle part of the vertical axis 1 is fixedly connected to a worm gear 1, the worm gear 1 is meshingly connected to a worm gear 1, the cross arm 1 is rotatably connected to a pair of sprocket wheels 1 at intervals on the left and right, the left and right sprocket wheels 1 are meshingly connected by a chain, the top of the sprocket wheel 1 is equidistantly hinged to a number of cutting blades, the top of the sprocket wheel 1 on the right is fixedly connected to the output shaft end of the motor 2, and the motor 2 is fixedly connected to the top of the cross arm 1.

[0012] Preferably, the transport and transmission mechanism includes: an inclined tube 1, the conical mouth end on the right side of the material receiving cart pocket is fixedly connected to an inclined tube 1 which is lower on the left and higher on the right, a belt conveyor is fixedly installed inside the inclined tube 1, and a plurality of material shifting plates are fixedly connected to the belt surface of the belt conveyor.

[0013] Preferably, the crushing and separation mechanism includes: a box body 1, the right end of the inclined tube 1 is fixedly connected to the top of the box body 1, the box body 1 is fixedly connected to the top of the chassis, a pair of rotating rollers are symmetrically connected to the box body 1 for rotation, a plurality of striking hammers are hinged on the surface of the rotating rollers, the front end of each rotating roller is fixedly connected to a bevel gear 1, a pair of bearing brackets are symmetrically fixedly installed on the top of the front end of the box body 1, a rotating shaft 2 is rotatably connected along the left and right directions in the bearing bracket, a pair of bevel gears 2 are symmetrically fixedly connected to the rotating shaft 2, the bevel gear 1 is meshingly connected to the bevel gear 2, and the right end of the rotating shaft 2 is fixedly connected to the output shaft end of the motor 4.

[0014] Preferably, the interior of the box body is fixedly connected to a conical funnel located below the rotating roller, the right wall of the box body located below the conical funnel is rotatably connected to a rotating fan, an air collecting pipe is provided on the outside of the rotating fan, a layer of filter screen is fixedly provided on the left end of the air collecting pipe, the left and right side walls of the bottom inner bottom of the box body are fixedly connected to a vertical spring, the bottom ends of the left and right springs are fixedly connected to a screening net, the screening net is slidably connected to the inner wall of the box body up and down, the right end of the box body is located at the height of the powder screening net and is fixedly connected to a straw output pipe, the bottom of the box body is rotatably connected to a screw rod, the left side of the screw rod is fixedly connected to a cam, the top of the cam presses the screening net, the screw rod goes deep into the grain storage box to the right, and the screw rod and the rotating fan obtain rotational power through a transmission mechanism.

[0015] Preferably, the harvesting component wear warning module includes: The first acquisition unit uses a plurality of stress and strain sensors to collect and record contact stress and strain data between the sprocket wheel and the cutting chain; The second collecting unit is used to collect and obtain the relative slip distance between the cutting chain and the sprocket one; A third acquisition unit is used to obtain the plane stress wear depth and composite material parameters of the bonding surface between the cutting chain and the sprocket; A data processing unit, used to receive, analyze and process the data transmitted by the first acquisition unit and the second acquisition unit; the data processing unit can transmit the detection data to the remote monitoring module in real time; A stress division unit is used to divide the cutting chain into a micro-motion cycle consisting of J load steps, and to divide the stress surface of the cutting chain into m stress nodes in each micro-motion cycle; A first warning unit, connected to the data processing unit, is used to send out a warning signal when abnormal wear of the cutting chain is detected; The first calculation unit calculates the total wear of the cutting chain based on the following formula (1): : (1); in which: is the total wear of the cutting chain, is the wear coefficient of the cutting chain material, is the normal load of sprocket 1 detected by the first acquisition unit, is the relative slip distance between the cutting chain and sprocket 1 detected by the second acquisition unit; J is the micro-motion cycle consisting of j load steps, j = 1, 2, 3, ..., J, is the wear depth of the cutting chain detected by the third acquisition unit at the m+1th node in the jth load step, is the wear depth of the cutting chain detected by the third acquisition unit at the m+1th node in the j-1th load step, is the wear depth of the cutting chain at the mth node at the jth load step detected by the third acquisition unit, is the wear depth of the cutting chain detected by the third acquisition unit at the mth node in the j-1th load step, is the relative slip increment of the cutting chain node m under the jth load step; is the relative slip increment of the cutting chain node m+1 under the jth load step; The first comparison unit compares the calculation result of the first calculation unit with the reasonable wear amount of the cutting chain. When the wear amount is greater than the reasonable amount, the first warning unit will issue the first warning.

[0016] Preferably, the second calculation unit calculates the total wear of the cutting chain based on the following formula (2) and the result of the first calculation unit: Based on the calculation of the singularity index of the stress at the cutting chain and sprocket bonding interface : (2); in which: is the singularity index of the stress at the bonding interface between the cutting chain and the sprocket, For cutting chain composite material parameter one, For cutting chain composite material parameter 2, is the Poisson's ratio of the cutting chain composite material, is the shear modulus of the cutting chain composite material, is the shear modulus of the first composite material, is the shear modulus of the second composite material; The elastic modulus of the cutting chain composite material obtained by the third obtaining unit; A second warning unit, connected to the data processing unit, is used to send out a warning signal when an abnormal stress singularity index of a bonding interface between the cutting chain and the sprocket is detected; The second comparison unit compares the calculation result of the second calculation unit with the safety threshold of the cutting chain. When the value is less than the minimum safety threshold, the second warning unit issues a first intensity warning; When the value is greater than the maximum value of the safety threshold, the second warning unit will issue a second intensity warning. When the value does not exceed the safety threshold, the second warning unit does not issue a warning.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a grain combine harvester, which realizes the movement of the machine through a walking mechanism, a grain overturning mechanism is responsible for overturning the grain from the field into a collecting cart, a telescopic harvesting mechanism adjusts the harvesting range according to the distribution of grain in the field, a transport and transmission mechanism transmits the harvested grain from the collecting cart to a crushing and separation mechanism, the crushing and separation mechanism performs preliminary processing on the grain to separate impurities and straw, and a control box is responsible for controlling the working status of each mechanism.

[0018] Beneficial effects: High integration: It integrates multiple functions such as walking, harvesting, transportation, crushing and separation into one, which improves work efficiency.

[0019] Easy to operate: centralized control is achieved through the control box, which simplifies the operation process.

[0020] Strong adaptability: The telescopic harvesting mechanism can adjust the harvesting range according to actual conditions. It is suitable for grain harvesting in farmlands of different sizes, thus improving the harvesting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a front view schematic diagram of a grain combine harvester of the present invention; Figure 2 It is a top view schematic diagram of a grain combine harvester of the present invention; Figure 3 is a front view schematic diagram of the grain tipping mechanism of the present invention; Figure 4 is a front view schematic diagram of the telescopic harvesting mechanism of the present invention; Figure 5 It is a front sectional schematic diagram of the crushing and separation mechanism of the present invention.

[0023] Reference numerals: 1. Walking mechanism; 2. Grain tipping mechanism; 3. Telescopic harvesting mechanism; 4. Transport and transmission mechanism; 5. Crushing and separation mechanism; 6. Control box; 7. Chassis; 8. Electric lifting legs; 9. Walking wheels; 10. Mounting frame; 11. Collecting cart pocket; 12. Counterweight; 13. Grain storage box; 14. Electric lifting column; 15. C-type bracket; 16. Rotating axis; 17. Feeding rod; 18. Protective net; 19. Pulley 1; 20. Motor 1; 21. Pulley 2; 22. Belt 1; 23. Sliding telescopic mechanism; 24. Harvesting assembly; 25. Screw mounting seat; 26. Screw 1; 27. Sliding block 1; 28. Push rod 1; 29. ​​L-type support; 30. Servo motor; 31. Worm 1; 32 , vertical axis one; 33, horizontal arm one; 34, worm gear one; 35, sprocket one; 36, cutting chain; 37, cutting blade; 38, motor two; 39, inclined tube one; 40, belt conveyor; 41, material removal plate; 42, box one; 43, rotating roller; 44, striking hammer; 45, bevel gear one; 46, bearing bracket; 47, rotating shaft two; 48, bevel gear two; 49, motor four; 50, conical funnel; 51, rotating fan; 52, air collecting pipe; 53, filter screen one; 54, spring one; 55, screening net; 56, straw output pipe; 57, screw one; 58, cam; 59, pulley three; 60, pulley four; 61, pulley five; 62, belt two; 63, pulley six; 64, belt three. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] The present invention provides the following embodiments Example 1 The embodiment of the present invention provides a grain combine harvester, such as Figure 1 , Figure 2 As shown, it includes: a walking mechanism 1, a grain tipping mechanism 2, a telescopic harvesting mechanism 3, a transport and transmission mechanism 4, a crushing and separation mechanism 5 and a control box 6, the left end of the walking mechanism 1 is fixedly provided with a telescopic harvesting mechanism 3, the top left side of the telescopic harvesting mechanism 3 is fixedly provided with a grain tipping mechanism 2, the right output end of the telescopic harvesting mechanism 3 is fixedly connected to the transport and transmission mechanism 4, the right end of the transport and transmission mechanism 4 is fixedly connected to the crushing and separation mechanism 5, and the walking mechanism 1, the grain tipping mechanism 2, the telescopic harvesting mechanism 3, the transport and transmission mechanism 4, the crushing and separation mechanism 5 are electrically connected to the control box 6 respectively.

[0028] The working principle and beneficial effects of the above technical solution are: Working principle: The grain combine harvester provided by the present invention realizes the movement of the machine through a walking mechanism 1, a grain overturning mechanism 2 is responsible for overturning the grain from the field into a collecting cart 11, a telescopic harvesting mechanism 3 adjusts the harvesting range according to the distribution of grains in the field, a transport transmission mechanism 4 transmits the harvested grains from the collecting cart 11 to a crushing and separation mechanism 5, the crushing and separation mechanism 5 performs preliminary processing on the grains to separate impurities and straw, and a control box 6 is responsible for controlling the working status of each mechanism.

[0029] Beneficial effects: High integration: It integrates multiple functions such as walking, harvesting, transportation, crushing and separation into one, which improves work efficiency.

[0030] Easy operation: centralized control is achieved through the control box 6, which simplifies the operation process.

[0031] Strong adaptability: The telescopic harvesting mechanism 3 can adjust the harvesting range according to actual conditions and is suitable for farmlands of different sizes.

[0032] Example 2 On the basis of Example 1, Figure 1-Figure 3 As shown, the walking mechanism 1 includes: a chassis 7 and an electric lifting leg 8, four vertical electric lifting legs 8 are fixedly installed at the four corners of the chassis 7, each electric lifting leg 8 is rotatably connected to a walking wheel 9, a pair of mounting frames 10 are fixedly installed symmetrically front and back at the left end of the bottom of the chassis 7, a material collecting cart hood 11 is fixedly installed at the left end of the mounting frame 10, a counterweight block 12 is fixedly installed on the top right side of the chassis 7, and a grain storage box 13 is fixedly installed on the left side of the counterweight block 12 on the chassis 7.

[0033] The grain overturning mechanism 2 includes: an electric lifting column 14, a pair of electric lifting columns 14 are symmetrically fixedly installed on the top of the left end of the material collecting cart 11, a C-shaped bracket 15 is fixedly installed on the top of the electric lifting column 14, the left end of the C-shaped bracket 15 is rotatably connected to a rotating shaft 16 along the front and rear direction, a plurality of material shifting rods 17 are fixedly installed on the surface of the rotating shaft 16, a layer of protective net 18 is fixedly installed in the middle of the material shifting rod 17, a pulley 19 is fixedly installed at the front end of the rotating shaft 16, a motor 20 is fixedly installed at the right end of the C-shaped bracket 15, a pulley 21 is installed at the front end of the output shaft of the motor 20, and the pulley 21 is connected to the pulley 19 through a belt 22.

[0034] The working principle and beneficial effects of the above technical solution are: Working principle: The walking mechanism 1 adjusts the height through the electric lifting legs 8 to adapt to different terrains. The electric lifting column 14 drives the C-shaped bracket 15 and the rotating shaft 16 to rotate, and the material-discharging rod 17 overturns the grain into the material receiving cart 11 during the rotation. The setting of the counterweight block 12 and the grain storage box 13 ensures the stability and storage capacity of the machine. When the grain overturning mechanism 2 is working, the control box 6 controls the electric lifting column 14 to rise and fall to a suitable height, and then the motor 1 20 drives the pulley 2 21 to rotate. The pulley 21 drives the pulley 1 19, the rotating shaft 16, and the material-discharging rod 17 to rotate synchronously through the belt 1 22. The material-discharging rod 17 rotates to overturn the grain branches, and the protective net 18 prevents the grain from being entangled on the rotating shaft 16.

[0035] Beneficial effects: Strong terrain adaptability: The design of the electric lifting legs 8 and the electric lifting columns 14 enables the machine to adapt to different terrains, improving the flexibility and stability of the operation.

[0036] High grain collection efficiency: The design of the material-moving rod 17 and the protective net 18 effectively improves the grain collection efficiency and reduces the loss.

[0037] Example 3 On the basis of Example 2, Figure 1-Figure 2 and Figure 4 As shown, the telescopic harvesting mechanism 3 includes: a sliding telescopic mechanism 23 and a harvesting assembly 24; Sliding telescopic mechanism 23: a screw mounting seat 25, a screw mounting seat 25 is fixedly installed in the center of the chassis 7 along the left and right directions, a screw 26 is rotatably connected inside the screw mounting seat 25 along the left and right directions, a sliding block 27 is threadedly connected to the screw 26, and the sliding block 27 is connected to the screw mounting seat 25 for left and right sliding. The left end of the bottom of the sliding block 27 is fixedly connected to a push rod 28 along the left and right directions, the push rod 28 slides left and right and passes through the right wall of the material receiving cart 11, and the left end of the push rod 28 is fixedly connected to an L-shaped support 29.

[0038] Two groups of harvesting components 24 are symmetrically arranged on the front and back of the L-shaped support 29, and the front harvesting component 24 includes: a servo motor 30, a servo motor 30 is fixedly installed at the left bottom center of the L-shaped support 29, the front output shaft end of the servo motor 30 is fixedly connected to a worm 31, the front end of the L-shaped support 29 is rotatably connected to a vertical shaft 32, the left end of the vertical shaft 32 is fixed to a cross arm 33, the middle part of the vertical shaft 32 is fixedly connected to a worm wheel 34, the worm wheel 34 is meshed with the worm 31, the cross arm 33 is rotatably connected to a pair of sprocket wheels 35 at intervals on the left and right, the left and right sprocket wheels 35 are meshed through a chain, the top of the sprocket wheel 35 is equidistantly and spaced apart and rotatably hinged to a plurality of cutting blades 37, the top of the sprocket wheel 35 on the right is fixedly connected to the output shaft end of a motor 2 38, and the motor 2 38 is fixedly connected to the top of the cross arm 33.

[0039] The working principle and beneficial effects of the above technical solution are: Working principle: The telescopic harvesting mechanism 3 drives the sliding block 27 and the push rod 28 to slide left and right through the lead screw 26, thereby adjusting the position of the harvesting assembly 24. The servo motor 30 drives the front and rear two groups of worms 31 and worm wheels 34 to rotate synchronously, driving the vertical shaft 32 and the cross arm 33 to rotate synchronously. The front and rear two groups of harvesting assemblies 24 can adjust the opening angle, thereby adjusting the harvesting range. When the front and rear two cross arms 33 are adjusted to the target angle, the motor 2 38 drives the left sprocket 35 to rotate, thereby driving the cutting chain 36 and the cutting blade 37 to rotate. Under the drive of the sprocket 35, the cutting blade 37 uses the rotating centrifugal force to cut the grain. The motor 2 38 provides power for the sprocket 35.

[0040] Beneficial effects: Adjustable harvesting range: The harvesting range can be adjusted by sliding the telescopic mechanism 23, thereby improving the applicability of the machine.

[0041] High cutting efficiency: The design of the sprocket 35 and the cutting blade 37 makes the cutting process more efficient and reduces energy consumption.

[0042] Example 4 On the basis of Example 2, Figure 1 , Figure 2 , Figure 5 As shown, the transport and transmission mechanism 4 includes: an inclined tube 39, the conical mouth end on the right side of the material receiving cart 11 is fixedly connected to the inclined tube 39 with a lower left and a higher right side, a belt conveyor 40 is fixedly installed inside the inclined tube 39, and the belt surface of the belt conveyor 40 is fixedly connected to a plurality of material shifting plates 41.

[0043] The crushing and separation mechanism 5 includes: a box body 42, the right end of the inclined tube 39 is fixedly connected to the top of the box body 42, the box body 42 is fixedly connected to the top of the chassis 7, a pair of rotating rollers 43 are symmetrically connected to the box body 42, a plurality of striking hammers 44 are hinged on the surface of the rotating rollers 43, and the front end of each rotating roller 43 is fixedly connected to a bevel gear 45, and a pair of bearing brackets 46 are symmetrically fixedly installed on the top of the front end of the box body 42, and a rotating shaft 47 along the left and right directions is rotatably connected in the bearing bracket 46, and a pair of bevel gears 48 are symmetrically fixedly connected to the rotating shaft 47, and the bevel gear 45 is meshed with the bevel gear 48. The right end of the rotating shaft 47 is fixedly connected to the output shaft end of the motor 49.

[0044] The inside of the box body 42 is fixedly connected to a conical funnel 50 located below the rotating roller 43, the right wall of the box body 42 located below the conical funnel 50 is rotatably connected to a rotating fan 51, an air collecting pipe 52 is sleeved on the outside of the rotating fan 51, and a layer of filter screen 53 is fixedly provided on the left end of the air collecting pipe 52, the left and right side walls of the bottom of the box body 42 are fixedly connected to a vertical spring 54, the bottom ends of the left and right springs 54 are fixedly connected to a screening net 55, the screening net 55 is slidably connected to the inner wall of the box body 42 up and down, the right end of the box body 42 is located at the height of the powder screening net and is fixedly connected to a straw output pipe 56, the bottom of the box body 42 is rotatably connected to a screw rod 57, a cam 58 is fixedly connected to the left side of the screw rod 57, the top of the cam rod 58 presses against the screening net 55, the screw rod 57 goes deep into the grain storage box 13 to the right, and the screw rod 57 and the rotating fan 51 obtain rotational power through a transmission mechanism 1; The transmission mechanism includes: pulley three 59 and pulley four 60, the left end of the rotating shaft 47 is fixedly connected to pulley three 59, the right part of the rotating shaft 47 is fixedly connected to pulley four 60, the left end of the screw rod 1 57 is fixedly connected to pulley five 61, the pulley three 59 and pulley five 61 are connected by belt two 62, the right end of the fan blade is fixedly connected to pulley six 63, and the pulley four 60 and pulley six 63 are connected by belt three 64.

[0045] The working principle and beneficial effects of the above technical solution are: Working principle: The transporting and conveying mechanism 4 transports the grains from the receiving cart 11 to the crushing and separating mechanism 5 through the belt conveyor 40. The crushing and separating mechanism 5 crushes the grains through the rotating roller 43 and the striking hammer 44, and the meshing of the bevel gear 1 45 and the bevel gear 2 48 realizes the rotation of the rotating roller 43. The screening net 55 screens under the action of the spring 1 54 and the cam 58, and the straw is discharged through the straw output pipe 56, and the grain falls into the grain storage box 13. The design of the rotating fan 51 and the air collecting duct 52 is helpful for separating impurities. When the crushing and separation mechanism 5 is working, after the grains and straw enter the box body 42, the control box 6 controls the motor 49 to run, and the motor 49 drives the rotating shaft 2 47, a pair of bevel gears 2 48, the pulley 3 59 and the pulley 4 60 to rotate synchronously. The bevel gear 2 48 engages to drive the bevel gear 1 45 and the rotating roller 43 to rotate synchronously. The left and right rotating rollers 43 rotate relative to each other. The rotating roller 43 on the left rotates clockwise, and the rotating roller 43 on the right rotates counterclockwise. The rotating roller 43 drives the striking hammer 44 to strike the grains for threshing. The pulley four 60 drives the pulley six 63 and the rotating fan 51 to rotate synchronously through the belt three 64. The rotating fan 51 rotates at a high speed to form wind in the blast pipe, blowing toward the grains and straw crushed materials falling from the conical funnel 50 for separation. The straw crushed materials are finally discharged through the straw output pipe 56. The pulley three 59 drives the pulley five 61, the screw one 57, and the cam 58 to rotate synchronously through the belt two 62. The cam 58 drives the screening net 55 to vibrate reciprocatingly up and down, and then the grain particles fall into the bottom of the box body 42, and then are transported to the grain storage box 13 by the screw one 57. Beneficial effects: Good crushing and separation effects: The design of the rotating roller 43, the striking hammer 44 and the screening net 55 makes the crushing and separation process more efficient and improves the quality of the grain.

[0046] High degree of automation: The linkage of various components is achieved through the transmission mechanism, reducing manual intervention.

[0047] Example 5 Based on Example 2, the wear warning module of the harvesting component 24 includes: The first acquisition unit uses a plurality of stress and strain sensors to collect and record contact stress and strain data between the sprocket wheel 35 and the cutting chain 36; The second collecting unit is used to collect and obtain the relative slip distance between the cutting chain 36 and the sprocket 1 35; The third acquisition unit is used to obtain the plane stress wear depth and composite material parameters of the bonding surface between the cutting chain 36 and the sprocket 1 35; A data processing unit, used to receive, analyze and process the data transmitted by the first acquisition unit and the second acquisition unit; the data processing unit can transmit the detection data to the remote monitoring module in real time; A stress division unit is used to divide the cutting chain 36 into a micro-motion cycle consisting of J load steps, and to divide the stress surface of the cutting chain 36 into m stress nodes in each micro-motion cycle; A first warning unit, connected to the data processing unit, is used to send out a warning signal when an abnormal wear state of the cutting chain 36 is detected; The first calculation unit calculates the total wear of the cutting chain 36 based on the following formula (1): : (1); in which: is the total wear of the cutting chain 36, is the wear coefficient of the material body of the cutting chain 36, is the normal load of the sprocket 1 35 detected by the first acquisition unit, is the relative slip distance between the cutting chain 36 and the sprocket 35 detected by the second acquisition unit; J is the micro-motion cycle consisting of j load steps, j = 1, 2, 3, ..., J, is the wear depth of the cutting chain 36 detected by the third acquisition unit at the m+1th node in the jth load step, is the wear depth of the cutting chain 36 detected by the third acquisition unit at the m+1th node in the j-1th load step, is the wear depth of the cutting chain 36 at the mth node at the jth load step detected by the third acquisition unit, is the wear depth of the cutting chain 36 at the mth node at the j-1th load step detected by the third acquisition unit, is the relative slip increment of node m of the cutting chain 36 under the jth load step; is the relative slip increment of node m+1 of cutting chain 36 under the jth load step; The first comparison unit compares the calculation result of the first calculation unit with the reasonable wear amount of the cutting chain 36. When the wear amount is greater than the reasonable amount, the first warning unit will issue the first warning.

[0048] The second calculation unit calculates the total wear of the cutting chain 36 based on the following formula (2) and the result of the first calculation unit: Based on the calculation of the singularity index of the stress at the bonding interface between the cutting chain 36 and the sprocket 35 : (2); in which: The singularity index of the stress at the bonding interface between the cutting chain 36 and the sprocket 35 is: Parameter 1 for cutting chain 36 composite material, Parameter 2 for cutting chain 36 composite material, Poisson's ratio for cutting chain 36 composite materials, is the shear modulus of the composite material of the cutting chain 36, is the shear modulus of the first composite material, is the shear modulus of the second composite material; The elastic modulus of the composite material of the cutting chain 36 obtained by the third obtaining unit; A second warning unit, connected to the data processing unit, is used to send out a warning signal when an abnormal stress singularity index of the bonding interface between the cutting chain 36 and the sprocket 35 is detected; The second comparison unit compares the calculation result of the second calculation unit with the safety threshold of the cutting chain 36. When the value is less than the minimum safety threshold, the second warning unit issues a first intensity warning; When the value is greater than the maximum value of the safety threshold, the second warning unit will issue a second intensity warning. When the value does not exceed the safety threshold, the second warning unit does not issue a warning.

[0049] The working principle and beneficial effects of the above technical solution are: Working principle: The wear warning module of the harvesting component 24 collects stress and strain data, relative slip distance, wear depth and other information of the sprocket 1 35 and the cutting chain 36 through the first collection unit, the second collection unit and the third acquisition unit. The data processing unit processes and analyzes these data, and calculates the total wear of the cutting chain 36 through the stress division unit and the first calculation unit. The first comparison unit compares the calculation result with the reasonable wear amount. When the reasonable wear amount is exceeded, the first warning unit sends a warning signal. The second calculation unit calculates the singularity index of the stress of each bonding interface of the cutting chain 36. The second comparison unit compares the calculation result with the preset value. When the preset value is reached or exceeded, the second warning unit sends a warning signal.

[0050] Beneficial effects: Timely and accurate early warning: Real-time monitoring and early warning of the wear of the cutting chain 36 are achieved through multiple collection units and calculation units, which improves the accuracy and timeliness of the early warning.

[0051] Low maintenance cost: The early warning system can detect the wear of the cutting chain 36 in time, avoiding equipment failure and downtime caused by severe wear and tear, and reducing maintenance costs.

[0052] Improve equipment life: Timely warning and replacement of severely worn cutting chains 36 help to extend the service life of the entire harvesting assembly 24.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grain combine harvester, characterized in that: include: A walking mechanism (1), a grain tipping mechanism (2), a telescopic harvesting mechanism (3), a transport and transmission mechanism (4), a crushing and separation mechanism (5) and a control box (6); the left end of the walking mechanism (1) is fixedly provided with a telescopic harvesting mechanism (3); the left side of the top of the telescopic harvesting mechanism (3) is fixedly provided with a grain tipping mechanism (2); the right output end of the telescopic harvesting mechanism (3) is fixedly connected to the transport and transmission mechanism (4); the right end of the transport and transmission mechanism (4) is fixedly connected to the crushing and separation mechanism (5); the walking mechanism (1), the grain tipping mechanism (2), the telescopic harvesting mechanism (3), the transport and transmission mechanism (4), the crushing and separation mechanism (5) are respectively electrically connected to the control box (6).

2. A grain combine harvester according to claim 1, characterized in that: The walking mechanism (1) comprises: a chassis (7) and an electric lifting leg (8), wherein four vertical electric lifting legs (8) are fixedly installed at the four corners of the chassis (7), and each electric lifting leg (8) is rotatably connected to a walking wheel (9), a pair of mounting frames (10) are fixedly installed at the left end of the bottom of the chassis (7) in a front-to-back symmetrical manner, a material receiving cart pocket (11) is fixedly installed at the left end of the mounting frame (10), a counterweight block (12) is fixedly installed at the right side of the top of the chassis (7), and a grain storage box (13) is fixedly installed on the chassis (7) on the left side of the counterweight block (12).

3. A grain combine harvester according to claim 2, characterized in that: The grain tipping mechanism (2) comprises: an electric lifting column (14); a pair of electric lifting columns (14) are fixedly installed on the top of the left end of the material receiving cart (11) symmetrically in the front and rear directions; a C-shaped bracket (15) is fixedly installed on the top of the electric lifting column (14); the left end of the C-shaped bracket (15) is rotatably connected to a rotating shaft (16) along the front and rear directions; a plurality of material shifting rods (17) are fixedly installed on the outer surface of the rotating shaft (16); a layer of protective net (18) is fixedly installed in the middle of the material shifting rod (17); a pulley (19) is fixedly installed at the front end of the rotating shaft (16); a motor (20) is fixedly installed at the right end of the C-shaped bracket (15); a pulley (21) is installed at the front end of the output shaft of the motor (20); and the pulley (21) is connected to the pulley (19) through a belt (22).

4. A grain combine harvester according to claim 2, characterized in that: The telescopic harvesting mechanism (3) comprises: a sliding telescopic mechanism (23) and a harvesting assembly (24); The sliding telescopic mechanism (23) comprises a screw mounting seat (25), the screw mounting seat (25) being fixedly mounted in the center of the chassis (7) along the left-right direction, the screw mounting seat (25) being rotatably connected to a screw (26) along the left-right direction, the screw (26) being threadedly connected to a sliding block (27), the sliding block (27) being slidably connected to the screw mounting seat (25) left-right, the left end of the bottom of the sliding block (27) being fixedly connected to a push rod (28) along the left-right direction, the push rod (28) slidingly passing through the right wall of the material receiving cart pocket (11) left-right, the left end of the push rod (28) being fixedly connected to an L-shaped support (29).

5. A grain combine harvester according to claim 4, characterized in that: The L-shaped support (29) is provided with two groups of harvesting assemblies (24) symmetrically in front and back, and the front harvesting assembly (24) comprises: a servo motor (30), the servo motor (30) is fixedly installed at the center of the left bottom of the L-shaped support (29), the front output shaft end of the servo motor (30) is fixedly connected to a worm gear (31), the front end of the L-shaped support (29) is rotatably connected to a vertical shaft (32), the left end of the vertical shaft (32) is fixed to a horizontal arm (33), and the center of the vertical shaft (32) is fixed to a horizontal arm (33). The first part is fixedly connected to a worm wheel (34), the worm wheel (34) is meshingly connected to a worm (31), the cross arm (33) is rotatably connected to a pair of sprocket wheels (35) at intervals on the left and right, the two sprocket wheels (35) are meshingly connected through a chain, the top of the sprocket wheel (35) is rotatably hinged to a plurality of cutting blades (37) at equal intervals, the top of the sprocket wheel (35) on the right is fixedly connected to the output shaft end of the second motor (38), and the second motor (38) is fixedly connected to the top of the cross arm (33).

6. A grain combine harvester according to claim 5, characterized in that: The transport and transmission mechanism (4) comprises: an inclined tube (39); the conical mouth end on the right side of the material receiving cart pocket (11) is fixedly connected to the inclined tube (39) which is lower on the left and higher on the right; a belt conveyor (40) is fixedly installed inside the inclined tube (39); and a plurality of material shifting plates (41) are fixedly connected to the belt surface of the belt conveyor (40).

7. A grain combine harvester according to claim 6, characterized in that: The crushing and separation mechanism (5) comprises: a box body (42), the right end of the inclined tube (39) is fixedly connected to the top of the box body (42), the box body (42) is fixedly connected to the top of the chassis (7), a pair of rotating rollers (43) are symmetrically connected to the box body (42), the surface of the rotating roller (43) is hinged with a plurality of striking hammers (44), the front end of each rotating roller (43) is fixedly connected to a bevel gear (45), a pair of bearing brackets (46) are symmetrically fixedly installed on the top of the front end of the box body (42), the bearing brackets (46) are rotatably connected to a rotating shaft (47) along the left and right directions, a pair of bevel gears (48) are symmetrically fixedly connected to the rotating shaft (47), the bevel gear (45) is meshingly connected to the bevel gear (48), and the right end of the rotating shaft (47) is fixedly connected to the output shaft end of the motor (49).

8. A grain combine harvester according to claim 7, characterized in that: include: The box body (42) is fixedly connected to a conical funnel (50) located below the rotating roller (43) inside, and the right wall of the box body (42) located below the conical funnel (50) is rotatably connected to a rotating fan (51), and an air collecting pipe (52) is sleeved on the outside of the rotating fan (51), and a layer of filter screen (53) is fixedly provided on the left end of the air collecting pipe (52), and the left and right side walls of the bottom of the box body (42) are fixedly connected to a vertical spring (54), and the bottom ends of the left and right springs (54) are fixedly connected to a screening net (55), and the screening net (55) is fixedly connected to the left and right side walls of the bottom of the box body (42). The separation net (55) is slidably connected to the inner wall of the box body (42) up and down. The right end of the box body (42) is located at the height of the powder screening net and is fixedly connected to the straw output pipe (56). The bottom of the box body (42) is rotatably connected to a screw rod (57). The left side of the screw rod (57) is fixedly connected to a cam (58). The top end of the cam (58) presses against the screening net (55). The screw rod (57) goes deep into the grain storage box (13) to the right. The screw rod (57) and the rotating fan (51) obtain rotational power through a transmission mechanism (1).

9. A grain combine harvester according to claim 4, characterized in that: A harvesting component (24) wear warning module is also provided, comprising: A first acquisition unit, using a plurality of stress and strain sensors, is used to acquire and record contact stress and strain data between the sprocket wheel 1 (35) and the cutting chain (36); A second collecting unit is used to collect and obtain the relative slip distance between the cutting chain (36) and the sprocket wheel one (35); A third acquisition unit is used to acquire the plane stress wear depth and composite material parameters of the bonding surface between the cutting chain (36) and the sprocket wheel one (35); A data processing unit, used to receive, analyze and process the data transmitted by the first acquisition unit and the second acquisition unit; the data processing unit can transmit the detection data to the remote monitoring module in real time; A stress division unit is used to divide the cutting chain (36) into a micro-motion cycle consisting of J load steps, and to divide the stress surface of the cutting chain (36) into m stress nodes in each micro-motion cycle; A first warning unit, connected to the data processing unit, for issuing a warning signal when abnormal wear of the cutting chain (36) is detected; The first calculation unit calculates the total wear of the cutting chain (36) based on the following formula (1): : (1); in which: is the total wear of the cutting chain (36), is the wear coefficient of the material of the cutting chain (36), is the normal load of sprocket 1 (35) detected by the first acquisition unit, is the relative slip distance between the cutting chain (36) and the sprocket wheel (35) detected by the second acquisition unit; J is the micro-motion cycle consisting of j load steps, j = 1, 2, 3, ..., J, is the wear depth of the cutting chain (36) detected by the third acquisition unit at the m+1th node in the jth load step, is the wear depth of the cutting chain (36) detected by the third acquisition unit at the m+1th node in the j-1th load step, is the wear depth of the cutting chain (36) detected by the third acquisition unit at the mth node in the jth load step, is the wear depth of the cutting chain (36) detected by the third acquisition unit at the mth node in the j-1th load step, is the relative slip increment of node m of the cutting chain (36) under the jth load step; is the relative slip increment of node m+1 of the cutting chain (36) under the jth load step; The first comparison unit compares the calculation result of the first calculation unit with the reasonable wear amount of the cutting chain (36). When the wear amount is greater than the reasonable amount, the first warning unit will issue the first warning.

10. A grain combine harvester according to claim 9, characterized in that: The second calculation unit calculates the total wear of the cutting chain (36) based on the following formula (2) and the result of the first calculation unit: Based on the calculation of the singularity index of the stress at the bonding interface between the cutting chain (36) and the sprocket (35), : (2); in which: is the singularity index of the stress at the bonding interface between the cutting chain (36) and the sprocket wheel (35), is the composite material parameter 1 of the cutting chain (36), The second parameter of the composite material of the cutting chain (36) is: is the Poisson's ratio of the composite material of the cutting chain (36), is the shear modulus of the composite material of the cutting chain (36), is the shear modulus of the first composite material, is the shear modulus of the second composite material; The elastic modulus of the composite material of the cutting chain (36) obtained by the third obtaining unit; A second warning unit, connected to the data processing unit, is used to send out a warning signal when an abnormal stress singularity index of the bonding interface between the cutting chain (36) and the sprocket wheel (35) is detected; The second comparison unit compares the calculation result of the second calculation unit with the safety threshold of the cutting chain (36). When the value is less than the minimum safety threshold, the second warning unit issues a first intensity warning; When the value is greater than the maximum value of the safety threshold, the second warning unit will issue a second intensity warning. When the value does not exceed the safety threshold, the second warning unit does not issue a warning.

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