A new multifunctional grain threshing test bench

Abstract

The invention discloses a novel multifunctional grain threshing test bench. In order to overcome the problems of the existing grain threshing test bench, such as lack of control over grain feeding amount, inability to adjust the horizontal inclination angle of the threshing drum and the speed of the threshing drum, lack of grain partition collection and weighing function, inability to collect threshing debris for threshing effect evaluation, and difficulty in moving, the test bench includes a feeding metering assembly, a frame, a threshing drum, a residue collection assembly, an energy supply transmission assembly, and a control assembly. The feeding metering assembly is installed at the front end of the threshing drum, and the grain unloading part of the feeding metering assembly is close to the feeding port of the threshing drum; the threshing drum is fixedly installed on the middle frame by bolt connection, and is connected to the frame through the middle frame; the residue collection assembly is installed at the bottom of the rear end of the threshing drum and is fixed to the frame by bolt connection; the energy supply transmission assembly is installed on the side of the rear end of the threshing drum, and the power is transmitted to the rear axle of the threshing drum through a spline connection; the control assembly is placed on the ground on the side of the threshing drum, which can meet the needs of grain threshing tests under various changing conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of grain threshing, and more specifically, relates to a novel multifunctional grain threshing test bench. Background Art

[0002] Grain thresher is an important agricultural machinery in my country's grain harvesting process. At present, the grain feeding speed of the grain thresher cannot be effectively measured, and there is no effective control of the feeding amount of the thresher. The horizontal inclination angle of the threshing drum of the grain thresher and the speed of the threshing drum cannot be adjusted. When the amount of grain is small, the grain cannot be effectively piled and squeezed in the threshing mechanism, which reduces the threshing efficiency; when the amount of grain is large, it is easy to cause the threshing drum to be blocked. In addition, due to the lack of quantitative measurement of grain collection in different areas, and the collection and weighing of debris after threshing, the threshing effect of the grain thresher cannot be quantitatively evaluated. Grain threshers are generally large in size and difficult to move, which is not conducive to conducting experiments in nearby farmland. Summary of the invention

[0003] The present invention provides a novel multifunctional grain threshing test bench to address the problems that the grain threshing test bench lacks the function of controlling the grain feeding amount, cannot adjust the horizontal inclination angle of the threshing drum and the rotation speed of the threshing drum, lacks the function of collecting and weighing grains in different areas, cannot collect threshing debris for threshing effect evaluation, is difficult to move, and the like.

[0004] A novel multifunctional grain threshing test bench comprises a feeding metering assembly, a frame, a threshing drum, a debris collecting assembly, an energy supply transmission assembly and a control assembly.

[0005] The feeding metering assembly is installed at the front end of the threshing drum and is an independent device. The unloading part of the feeding metering assembly is close to the feeding port of the threshing drum; the threshing drum is fixedly installed on the middle frame in the form of bolt connection, and is connected to the frame through the middle frame; the debris collection assembly is installed at the bottom of the rear end of the threshing drum and is fixed to the frame in the form of bolt connection; the energy supply transmission assembly is installed on the side of the rear end of the threshing drum, and transmits power to the rear axle of the threshing drum through a spline connection, and is an independent device; the control assembly is placed on the ground on the side of the threshing drum and is an independent device.

[0006] The feeding metering assembly comprises a variable frequency asynchronous motor, a belt transmission mechanism, a chain transmission mechanism, a transmission, a conveyor assembly, a chassis assembly, an upper baffle, a metering sensor assembly and a feeding universal wheel.

[0007] The variable frequency asynchronous motor is installed on the chassis assembly, the variable frequency asynchronous motor is connected to one end of the transmission through a belt drive mechanism, the other end of the transmission is connected to the transmission shaft of the conveyor assembly through a chain drive mechanism, the upper conveyor assembly and the upper baffle are supported on the chassis assembly through the metering sensor assembly, the upper baffle is installed on the support frame of the conveyor assembly by bolt connection, and four identical feeding universal wheels are installed at the four corners of the bottom of the chassis assembly and fixed by bolt connection.

[0008] The feeding metering assembly can control the feeding speed of the grain ears, and the control range of the feeding speed is 0.2-16 kg / s.

[0009] The frame comprises an upper frame, a roller angle adjustment assembly and a chassis.

[0010] The upper rack comprises two front support rods, two rear support rods, two horizontal connecting rods and four vertical connecting rods.

[0011] The two front support rods and the two rear support rods are respectively welded to the four corners of the chassis, and the two horizontal connecting rods, the four vertical connecting rods and the chassis connect the four support rods into a whole.

[0012] The roller angle adjustment assembly comprises an adjustment hydraulic cylinder, a middle frame, a rear positioning mechanism and a front articulation mechanism.

[0013] The two adjusting hydraulic cylinders are installed below the rear end of the threshing drum, the tail of the adjusting hydraulic cylinder is hinged to the front support rod, and the top of the adjusting hydraulic cylinder is hinged to the middle frame; the inner side of the middle frame is fixed to the threshing drum with bolts, the outer front end of the middle frame is connected to the frame through a front hinge mechanism, the outer rear end of the middle frame is connected to the rear support rod through a rear positioning mechanism, and the bottom of the middle frame is hinged to the top of the adjusting hydraulic cylinder through bolts.

[0014] The rear positioning mechanism comprises a positioning hole, a positioning bolt and a threaded hole.

[0015] There are 18 positioning holes, which are evenly distributed on the two rear support rods with the front hinge mechanism of the middle frame as the center and the length of the middle frame as the radius, and the central angle between two adjacent positioning holes is 1°; the three threaded holes are distributed on the four end faces of the front and rear connecting plate sides of the middle frame with the same arc and spacing as the positioning holes; the positioning bolts pass through the positioning holes and are fixed in the threaded holes.

[0016] The front hinge mechanism comprises a central round hole, a long hole, a threaded hole and a positioning bolt.

[0017] The centers of the two long holes and one middle round hole are distributed on the sides of the two front support rods with the same arc and spacing as the positioning holes, and the two long holes are distributed on both sides of the middle round hole; the positioning bolts pass through the two long holes and the one middle round hole respectively and are fixed in the threaded holes; so that the middle frame can rotate around the middle round hole.

[0018] The inclination angle of the threshing drum relative to the horizontal ground is adjustable within a range of -5° to +12°.

[0019] The chassis comprises a motor, a fan, a grain receiving hopper assembly, a weighing and metering assembly, a frame universal wheel, a support and a chassis frame.

[0020] The motor and the fan are both installed on the chassis frame through bolt connection, and the two are connected through a V-belt transmission; the grain receiving hopper assembly is composed of 11 small rectangular lattice hoppers arranged horizontally, which are installed on the chassis frame through bolt connection in sequence; the weighing sensor in the weighing and metering assembly is installed under each small rectangular lattice hopper of the grain receiving hopper assembly, and each is independent; the four frame universal wheels are fixed to the four corners of the bottom of the chassis frame by four bolts respectively; the four supports are fixed to the bottom of the chassis frame next to the frame universal wheels by four bolts respectively.

[0021] The rotation speed of the fan can be adjusted by the motor.

[0022] The total component area of ​​the grain receiving hopper measures the weight of the grains dropped from the threshing drum assembly. The weighing range of a single area is 0 to 50 kg, and the total weighing range is 0 to 550 kg.

[0023] The threshing drum comprises an upper cover plate, a lower concave plate and a drum body.

[0024] The upper cover plate and the lower concave plate enclose the drum body; the outer diameter of the threshing drum is 650 mm, the diameter of the drum body is 500 mm, and the total length of the threshing drum is 2800 mm.

[0025] The debris collection assembly comprises a collection rack, a debris collection bag assembly and a debris weighing sensor.

[0026] The debris collecting bag assembly is connected to the collecting rack, and the debris weighing sensor is arranged at the lower part of the debris collecting bag assembly; the collecting rack is connected to the threshing drum assembly, and the threshed grain cobs, husks and other debris pass through the collecting rack and enter the debris collecting bag assembly, and finally fall into the bottom of the bag; the weighing range of the debris weighing sensor is 0 to 500 kg.

[0027] The energy supply transmission assembly comprises a driving motor, a torque and speed sensor, a lower bevel gear commutator, a pulley transmission mechanism, an upper bevel gear commutator, a universal shaft, a rear bevel gear commutator and a bracket.

[0028] The driving motor is fixed on the bracket by bolts, and the motor output shaft is connected with the torque and speed sensor input shaft; the torque and speed sensor output shaft is connected with the lower bevel gear commutator, and a pulley is fixed on the power output shaft of the lower bevel gear commutator to input power into the pulley transmission mechanism; the pulley at the upper end of the pulley transmission mechanism is connected with the upper bevel gear commutator, and the power is input into the upper bevel gear commutator to complete the transmission and commutation; the output shaft end of the upper bevel gear commutator is connected with a universal shaft, and the power is transmitted to the rear bevel gear commutator through the universal shaft; the power output end of the rear bevel gear commutator is connected with the rear shaft of the drum in the threshing drum to drive the drum to rotate; the speed of the threshing drum can be controlled by changing the speed of the driving motor, and the speed control range is 100r / min to 600r / min.

[0029] The control assembly is placed on the ground at the side of the threshing drum, and collects the metering sensor data of the feeding metering assembly, the torque speed sensor data of the energy supply transmission assembly, the weighing data of the weighing metering assembly below the grain receiving hopper assembly, and the debris weighing data of the debris collection assembly; after the control assembly performs calculations and processing, according to the control strategy, the motor speed of the feeding metering assembly, the driving motor speed of the energy supply transmission assembly, and the debris removal fan speed can be changed in real time through frequency conversion control; the control assembly can control the extension and retraction of the adjusting hydraulic cylinder of the threshing drum.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The inclination angle of the threshing drum relative to the horizontal ground is adjustable within a range of -5° to +12°;

[0032] (2) The grain receiving hopper at the bottom of the drum is composed of 11 small rectangular hoppers, each with a weighing sensor at the bottom. The weight of the grains falling from the threshing drum assembly is measured in different areas. The weighing range of a single area is 0 to 50 kg, and the total weighing range is 0 to 550 kg. The distribution of grains after threshing can be observed;

[0033] (3) A small fan is installed at the bottom of the drum, and the wind speed can be adjusted. The scattered grains can be observed and the grains coming down from the concave plate can be blown into the grains recovery area to reduce the grain impurity rate;

[0034] (4) The threshing drum speed can be adjusted within the range of 100r / min to 600r / min;

[0035] (5) The test bench is equipped with universal wheels and fixed supports, which makes it easy to move and can be towed to the field for testing;

[0036] (6) The debris collection assembly can collect various debris generated after the threshing mechanism completes threshing, and the debris weighing sensor can measure the weight of the debris, with a measurement range of 0 to 500 kg;

[0037] (7) The feeding device is independent of the threshing device. The feeding metering assembly can control the feeding speed of the grain ears by changing the speed of the feeding motor. The control range of the feeding speed is 0.2 to 16 kg / s. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is the general assembly diagram of the present invention;

[0039] Figure 2 The feeding metering assembly of the present invention;

[0040] Figure 3 It is a frame structure diagram of the present invention;

[0041] Figure 4 The roller angle adjustment assembly of the present invention;

[0042] Figure 5 The middle frame of the drum angle adjustment assembly of the present invention;

[0043] Figure 6 The front hinge mechanism of the roller angle adjustment assembly of the present invention;

[0044] Figure 7 The frame chassis assembly of the present invention;

[0045] Figure 8 It is a structural diagram of a threshing drum of the present invention;

[0046] Fig. 9 The waste collection assembly of the present invention;

[0047] Fig.10 It is the energy supply transmission assembly of the present invention.

[0048] In the figure: A, feeding metering assembly; B, frame; C, threshing drum; D, debris collection assembly; E, energy supply transmission assembly; F, control assembly; 1, variable frequency asynchronous motor; 2, belt transmission mechanism; 3, chain transmission mechanism; 4, transmission; 5, conveyor assembly; 6, chassis assembly; 7, upper baffle; 8, metering sensor assembly; 9, feeding universal wheel; 10, upper frame; 11, drum angle adjustment assembly; 12, chassis; 13, front support rod; 14, rear support rod; 15, horizontal connecting rod; 16, vertical connecting rod; 17, adjusting hydraulic cylinder; 18, middle frame; 19, rear positioning mechanism; 20, front articulation mechanism; 21 , positioning hole; 22, positioning bolt; 23, threaded hole; 24, middle round hole; 25, long hole; 26, motor; 27, fan; 28, grain hopper assembly; 29, weighing and metering assembly; 30, frame universal wheel; 31, support; 32, chassis frame; 33, upper cover plate; 34, lower concave plate; 35, drum body; 36, collecting rack; 37, debris bag assembly; 38, debris weighing sensor; 39, driving motor; 40, torque and speed sensor; 41, lower bevel gear commutator; 42, pulley transmission mechanism; 43, upper bevel gear commutator; 44, universal shaft; 45, rear bevel gear commutator; 46, bracket. DETAILED DESCRIPTION

[0049] See also Figure 1 A new multifunctional grain threshing test bench includes a feeding metering assembly A, a frame B, a threshing drum C, a debris collecting assembly D, an energy supply transmission assembly E and a control assembly F.

[0050] The feeding metering assembly A is installed at the front end of the threshing drum C and is an independent device. The unloading part of the feeding metering assembly A is close to the feeding port of the threshing drum C; the threshing drum C is fixedly installed on the middle frame 34 by bolt connection, and is connected to the frame B through the middle frame 34; the debris collection assembly D is installed at the bottom of the rear end of the threshing drum C and is fixed to the frame B by bolts; the energy supply transmission assembly E is installed on the side of the rear end of the threshing drum C, and transmits power to the rear axle of the threshing drum C through a spline connection, and is an independent device; the control assembly F is placed on the ground on the side of the threshing drum C and is an independent device.

[0051] See also Figure 2The feeding metering assembly A comprises a variable frequency asynchronous motor 1, a belt transmission mechanism 2, a chain transmission mechanism 3, a transmission 4, a conveyor assembly 5, a chassis assembly 6, an upper baffle 7, a metering sensor assembly 8 and a feeding universal wheel 9; the variable frequency asynchronous motor 1 is mounted on the chassis assembly 6, the variable frequency asynchronous motor 1 is connected to one end of the transmission 4 through the belt transmission mechanism 2, the other end of the transmission 4 is connected to the transmission shaft of the conveyor assembly 5 through the chain transmission mechanism 3, the upper conveyor assembly 5 and the upper baffle 7 are supported on the chassis assembly 6 through the metering sensor assembly 8, the upper baffle 7 is mounted on the support frame of the conveyor assembly 5 by bolt connection, and four identical feeding universal wheels 9 are mounted at the four corners of the bottom of the chassis assembly 6 and fixed by bolt connection.

[0052] The feeding metering assembly A can control the feeding speed of the ears of grain by changing the rotation speed of the variable frequency asynchronous motor 1, and the control range of the feeding speed is 0.2 to 16 kg / s.

[0053] See also Figure 3 The frame B includes an upper frame 10, a roller angle adjustment assembly 11 and a chassis 12; the upper frame 10 includes two front support rods 13, two rear support rods 14, two horizontal connecting rods 15 and four vertical connecting rods 16; the two front support rods 13 and the two rear support rods 14 are respectively welded to the four corners of the chassis 12, and the two horizontal connecting rods 15, the four vertical connecting rods 16 and the chassis 12 connect the four support rods into a whole.

[0054] See also Figure 4 The drum angle adjustment assembly 11 includes an adjusting hydraulic cylinder 17, a middle frame 18, a rear positioning mechanism 19 and a front articulation mechanism 20; two adjusting hydraulic cylinders 17 are installed below the rear end of the threshing drum C, the tail of the adjusting hydraulic cylinder 17 is hinged to the front support rod 13, and the top of the adjusting hydraulic cylinder 17 is hinged to the middle frame 18; the inner side of the middle frame 18 is fixed to the threshing drum C with bolts, the outer front end of the middle frame 18 is connected to the frame B through the front articulation mechanism 20, the outer rear end of the middle frame 18 is connected to the rear support rod 12 through the rear positioning mechanism 19, and the lower rear side of the middle frame 18 is hinged to the top of the adjusting hydraulic cylinder 17 through bolts.

[0055] See also Figure 5 The rear positioning mechanism 19 includes a positioning hole 21, a positioning bolt 22 and a threaded hole 23; there are 18 single-side positioning holes 21, which are evenly distributed on the two rear support rods 14 with the front hinge mechanism 20 of the middle frame 18 as the center and the length of the middle frame 18 as the radius, and the central angle between two adjacent positioning holes 21 is 1°; the three threaded holes 23 are distributed on the four end faces of the front and rear connecting plate sides of the middle frame 18 with the same arc and spacing as the positioning holes 21; the positioning bolts 22 pass through the positioning holes 21 and are fixed in the threaded holes 23.

[0056] See also Figure 6 The front hinge mechanism 20 includes a middle round hole 24, a long hole 25, a threaded hole 23 and a positioning bolt 22; the two long holes 25 and the one middle round hole 24 are distributed on the sides of the two front support rods 13 with the same arc and spacing as the positioning hole 21, and the two long holes 25 are distributed on both sides of the middle round hole 24; the positioning bolts 22 pass through the two long holes 25 and the one middle round hole 24 and are fixed in the threaded hole 23; so that the middle frame 18 can rotate around the middle round hole 24.

[0057] By changing the extension and retraction of the hydraulic cylinder 17, the inclination angle of the threshing drum C relative to the horizontal ground can be arbitrarily changed, and the adjustment range is -5° to +12°.

[0058] See also Figure 7 The chassis 12 includes a motor 26, a fan 27, a grain receiving hopper assembly 28, a weighing and metering assembly 29, a frame universal wheel 30, a support 31 and a chassis frame 32; the motor 26 and the fan 27 are both installed on the chassis frame 32 by bolt connection, and the two are connected by a V-belt transmission; the grain receiving hopper assembly 28 is 11 small rectangular grid buckets arranged horizontally, which are installed on the chassis frame 32 by bolt connection in sequence; the weighing sensor in the weighing and metering assembly 29 is installed under each small rectangular grid bucket of the grain receiving hopper assembly 28, and each is independent; the four frame universal wheels 30 are respectively fixed to the four corners of the bottom of the chassis frame 32 by four bolts; the four supports 31 are respectively fixed to the bottom of the chassis frame 32 by four bolts next to the frame universal wheels 30.

[0059] The rotation speed of the fan 27 can be adjusted by the motor 26 .

[0060] The grain receiving hopper assembly 28 measures the weight of the grains dropped from the threshing drum assembly in different areas, the weighing range of a single area is 0-50kg, and the total weighing range is 0-550kg.

[0061] See also Figure 8 The threshing drum C includes an upper cover plate 33, a lower concave plate 34 and a drum body 35; the upper cover plate 33 and the lower concave plate 34 enclose the drum body 35; the outer diameter of the threshing drum C is 650 mm, the diameter of the drum body 35 is 500 mm, and the total length of the threshing drum is 2800 mm.

[0062] See also Fig. 9The debris collection assembly D includes a collection rack 36, a debris collection bag assembly 37 and a debris weighing sensor 38; the debris collection bag assembly 37 is connected to the collection rack 36, and the debris weighing sensor 38 is arranged at the lower part of the debris collection bag assembly 37; the collection rack 36 is connected to the threshing drum assembly C, and the threshed grain cobs, husks and other debris pass through the collection rack 36 and enter the debris collection bag assembly 37, and finally fall into the bottom of the bag; the weighing range of the debris weighing sensor 38 is 0 to 500 kg.

[0063] See also Fig.10 The energy supply transmission assembly E includes a drive motor 39, a torque and speed sensor 40, a lower bevel gear commutator 41, a pulley transmission mechanism 42, an upper bevel gear commutator 43, a universal shaft 44, a rear bevel gear commutator 45 and a bracket 46; the drive motor 39 is fixed to the bracket 46 by bolts, and the motor output shaft is connected to the input shaft of the torque and speed sensor 40; the output shaft of the torque and speed sensor 40 is connected to the lower bevel gear commutator 41, and a pulley is fixed on the power output shaft of the lower bevel gear commutator 41, and the power is input into the pulley transmission mechanism 42; The upper end pulley of the pulley transmission mechanism 42 is connected to the upper bevel gear commutator 43, and the power is input into the upper bevel gear commutator 43 to complete the transmission commutation; the output shaft end of the upper bevel gear commutator 43 is connected with a universal shaft 44, and the power is transmitted to the rear bevel gear commutator 45 through the universal shaft 44; the power output end of the rear bevel gear commutator 45 is connected to the rear shaft of the drum in the threshing drum C, driving the drum to rotate; by changing the speed of the driving motor 39, the speed control of the threshing drum C can be achieved, and the speed control range is 100r / min~600r / min.

[0064] The control assembly F is placed on the ground on the side of the threshing drum C, and collects the metering sensor data of the feeding metering assembly A, the torque speed sensor 40 data of the energy supply transmission assembly E, the weighing data of the weighing metering assembly 29 below the grain receiving hopper assembly 28, and the debris weighing data of the debris collection assembly D; after the control assembly F performs calculations and processing, according to the control strategy, the speed of the motor 1 of the feeding metering assembly A, the speed of the driving motor 39 of the energy supply transmission assembly E, and the speed of the debris removal fan 26 can be changed in real time through frequency conversion control; the control assembly F can control the extension and retraction of the adjusting hydraulic cylinder 11 of the threshing drum C.

[0065] Working principle of the present invention:

[0066] See also Figure 1 to Figure 2The working principle of the whole machine of the present invention is as follows. After the control assembly F sends a control signal, the variable frequency asynchronous motor 1 in the feeding metering assembly A starts, and after transmission through the belt transmission mechanism 2, the chain transmission mechanism 3 and the transmission 4, drives the conveyor assembly 5 to move, and conveys the grains forward into the feeding port of the threshing drum C. While conveying the grains, the metering sensor assembly 8 in the feeding metering assembly A can measure the weight of the grains in real time, and feed back the weight signal to the control assembly F.

[0067] See also Figures 3 to 6 The principle of adjusting the horizontal inclination angle between the threshing drum C and the ground of the present invention is as follows. The drum angle adjustment assembly 11 composed of the adjusting hydraulic cylinder 17, the rear positioning mechanism 19 of the middle frame 18 and the front hinge mechanism 20 is installed inside the frame B. When it is necessary to increase the inclination angle between the threshing drum C and the horizontal plane, the two adjusting hydraulic cylinders 17 extend to push the middle frame 18 to move upward, and the front hinge mechanism 20 connected to the middle frame 18 rotates around the middle circular hole 24. As the adjusting hydraulic cylinder 17 extends, the inclination angle between the middle frame 18 and the horizontal plane continues to increase, and the horizontal inclination angle of the threshing drum C installed on the middle frame 18 increases at the same time. After the adjustment is completed, the positioning bolt 22 is used to pass through the positioning hole 21 and fixed in the threaded hole 23 to prevent the angle change caused by vibration. When it is necessary to reduce the inclination angle between the threshing drum C and the horizontal plane, the two adjusting hydraulic cylinders 17 retract, and the remaining actions are similar to the above case. Increasing the horizontal inclination angle of the threshing drum C can increase the degree of grain squeezing in the threshing drum C when the grain feeding amount is small, thereby improving the threshing efficiency. Reducing the horizontal inclination angle of the threshing drum C can prevent the threshing drum from being blocked when the grain feed amount is too large.

[0068] See also Figure 7 The working principle of the chassis 12 of the present invention is as follows. The motor 26 receives a control signal from the control assembly F and starts to rotate, and drives the fan 27 to blow air. After the grains are threshed by the threshing drum C, the grains and some small-sized debris fall from the threshing drum C. The grains with higher density fall directly into the grain receiving hopper assembly 28. The weighing and metering assembly 29 installed under each small rectangular grid bucket of the grain receiving hopper assembly 28 can measure the weight of the grains falling therein. Through the regional measurement method, after being summarized and analyzed by the control assembly F, a threshing effect distribution map can be provided. The debris with lower density is blown away by the wind blown by the fan 27, which reduces the impurity content of the collected grains. The frame universal wheel 30 is used for the overall movement of the frame B.

[0069] See also Figure 8The working principle of the threshing drum C of the present invention is as follows. After being conveyed by the driving conveyor assembly 5 of the feeding metering assembly A, the grains enter the feed port of the threshing drum C. In the cylindrical space surrounded by the upper cover plate 33 and the lower concave plate 34, the grains are squeezed, rubbed and beaten by the drum body 35, and the grains and debris are gradually separated. The grains and small-sized debris fall through the gap of the lower concave plate 34 and enter the grain receiving hopper assembly 28 of the chassis 12. The remaining debris continues to move backward along the threshing drum C and is discharged from the discharge port.

[0070] See also Fig. 9 The working principle of the debris collection assembly D of the present invention is as follows. After threshing, the ear core rods, husks and other debris generated are discharged from the discharge outlet of the threshing drum C and fall into the collection rack 36 of the debris collection assembly D. The debris continues to fall in and eventually enters the debris collection bag assembly 37. The debris weighing sensor 38 placed at the bottom of the debris collection bag assembly 37 can measure the weight of the collected debris, with a measurement range of 0 to 500 kg, and transmit the signal to the control assembly F.

[0071] See also Fig.10 The working principle of the energy supply transmission assembly E of the present invention is as follows. The driving motor 39 is controlled by the control assembly F to rotate, and its output power is transmitted to the lower bevel gear commutator 41 via the torque speed sensor 40. A pulley is fixed on the power output shaft of the lower bevel gear commutator 41, and the power is input into the pulley transmission mechanism 42; the pulley at the upper end of the pulley transmission mechanism 42 is connected to the upper bevel gear commutator 43, and the power is input into the upper bevel gear commutator 43 to complete the transmission commutation; the output shaft end of the upper bevel gear commutator 43 is connected to the universal shaft 44, and the power is transmitted to the rear bevel gear commutator 45 through the universal shaft 44; the power output end of the rear bevel gear commutator 45 is connected to the rear shaft of the drum in the threshing drum C, driving the drum to rotate. The power transmission method combining multiple sets of bevel gear commutators and universal shafts is adopted to ensure the power connection of the threshing drum C when the horizontal inclination angle is changed. The control assembly F can control the speed of the drum body 35 to be between 100 r / min and 600 r / min by controlling the speed of the driving motor 39. The control assembly F can analyze and determine the current working state of the threshing drum C by monitoring the data of the torque speed sensor 40.

Claims

1. A new multifunctional grain threshing test bench, Features: It includes a feed metering assembly (A), a frame (B), a threshing drum (C), a waste collection assembly (D), an energy supply transmission assembly (E) and a control assembly (F); The feeding metering assembly (A) is installed at the front end of the threshing drum (C) and is an independent device. The unloading part of the feeding metering assembly (A) is close to the feeding port of the threshing drum (C); the threshing drum (C) is fixedly installed on the middle frame (18) by bolt connection, and is connected to the frame (B) through the middle frame (18); the waste collection assembly (D) is installed below the rear end of the threshing drum (C) and is fixed to the frame (B) by bolt connection; the energy supply transmission assembly (E) is installed on the side of the rear end of the threshing drum (C) and transmits power to the rear axle of the threshing drum (C) through a spline connection, and is an independent device; the control assembly (F) is placed on the ground on the side of the threshing drum (C) and is an independent device; The feeding metering assembly (A) comprises a variable frequency asynchronous motor (1), a belt transmission mechanism (2), a chain transmission mechanism (3), a transmission (4), a conveyor assembly (5), a chassis assembly (6), an upper baffle (7), a metering sensor assembly (8) and a feeding universal wheel (9); The variable frequency asynchronous motor (1) is mounted on the chassis assembly (6), the variable frequency asynchronous motor (1) is connected to one end of the transmission (4) through a belt transmission mechanism (2), the other end of the transmission (4) is connected to the transmission shaft of the conveyor assembly (5) through a chain transmission mechanism (3), the upper conveyor assembly (5) and the upper baffle (7) are supported on the chassis assembly (6) through a metering sensor assembly (8), the upper baffle (7) is mounted on the support frame of the conveyor assembly (5) by bolt connection, and four identical feeding universal wheels (9) are mounted at the four corners of the bottom of the chassis assembly (6) and fixed by bolt connection; The feeding speed of the grain ears in the feeding metering assembly (A) is controllable, and the control range of the feeding speed is 0.2-16 kg / s; The frame (B) comprises an upper frame (10), a roller angle adjustment assembly (11) and a chassis (12); The upper frame (10) comprises two front support rods (13), two rear support rods (14), two horizontal connecting rods (15) and four vertical connecting rods (16); The two front support rods (13) and the two rear support rods (14) are respectively welded to the four corners of the chassis (12); the two horizontal connecting rods (15), the four vertical connecting rods (16) and the chassis (12) connect the two front support rods (13) and the two rear support rods (14) into a whole; The roller angle adjustment assembly (11) comprises an adjustment hydraulic cylinder (17), a middle frame (18), a rear positioning mechanism (19) and a front articulation mechanism (20); Two adjusting hydraulic cylinders (17) are installed below the rear end of the threshing drum (C); the tail of the adjusting hydraulic cylinder (17) is hinged to the rear support rod (14); the top of the adjusting hydraulic cylinder (17) is hinged to the middle frame (18); the inner side of the middle frame (18) is fixed to the threshing drum (C) by bolts; the outer front end of the middle frame (18) is connected to the frame (B) through a front hinge mechanism (20); the outer rear end of the middle frame (18) is connected to the rear support rod (14) through a rear positioning mechanism (19); and the lower rear side of the middle frame (18) is hinged to the top of the adjusting hydraulic cylinder (17) through bolts; The rear positioning mechanism (19) comprises a positioning hole (21), a positioning bolt (22) and a threaded hole (23); There are 18 positioning holes (21), which are evenly distributed on the two rear support rods (14) with the front hinge mechanism (20) of the middle frame (18) as the center and the length of the middle frame (18) as the radius, and the central angle between two adjacent positioning holes (21) is 1°; the three threaded holes (23) are distributed on the four end surfaces of the front and rear connecting plate sides of the middle frame (18) with the same arc and spacing as the positioning holes (21); the positioning bolts (22) pass through the positioning holes (21) and are fixed in the threaded holes (23); The front hinge mechanism (20) comprises a central circular hole (24), a long hole (25), a threaded hole (23) and a positioning bolt (22); The two long holes (25) and one central round hole (24) are respectively distributed on the sides of the two front support rods (13) with the same arc and spacing as the positioning hole (21), and the two long holes (25) are distributed on both sides of the central round hole (24); the positioning bolts (22) pass through the two long holes (25) and one central round hole (24) respectively and are fixed in the threaded hole (23); the middle frame (18) can rotate around the central round hole (24); The inclination angle between the threshing drum (C) and the horizontal ground is adjustable within a range of -5° to +12°; The chassis (12) comprises a motor (26), a fan (27), a grain receiving hopper assembly (28), a weighing and metering assembly (29), a frame universal wheel (30), a support (31) and a chassis frame (32); The motor (26) and the fan (27) are both installed on the chassis frame (32) by bolt connection, and the two are connected by a V-belt transmission; the grain receiving hopper assembly (28) is 11 small rectangular grid hoppers arranged horizontally, which are installed on the chassis frame (32) by bolt connection in sequence; the weighing sensor in the weighing and metering assembly (29) is installed under each small rectangular grid hopper of the grain receiving hopper assembly (28), and each is independent; the four frame universal wheels (30) are respectively fixed to the four corners of the bottom of the chassis (12) frame by four bolts; the four supports (31) are respectively fixed to the bottom of the chassis (12) frame next to the frame universal wheels (30) by four bolts; The rotation speed of the fan (27) can be adjusted by the motor (26); The grain receiving hopper assembly (28) measures the weight of the grains dropped from the threshing drum (C) assembly in different areas, the weighing range of a single area is 0 to 50 kg, and the total weighing range is 0 to 550 kg; The energy supply transmission assembly (E) comprises a drive motor (39), a torque speed sensor (40), a lower bevel gear commutator (41), a pulley transmission mechanism (42), an upper bevel gear commutator (43), a universal shaft (44), a rear bevel gear commutator (45) and a bracket (46); The drive motor (39) is fixed to the bracket (46) by bolts, and the output shaft of the drive motor (39) is connected to the input shaft of the torque speed sensor (40); the output shaft of the torque speed sensor (40) is connected to the lower bevel gear commutator (41), and a pulley is fixed on the power output shaft of the lower bevel gear commutator (41); the upper end pulley of the pulley transmission mechanism (42) is connected to the upper bevel gear commutator (43); the output shaft end of the upper bevel gear commutator (43) is connected to a universal shaft (44); the power output end of the rear bevel gear commutator (45) is connected to the rear shaft in the threshing drum (C); the speed control range of the threshing drum (C) is 100r / min to 600r / min.

2. A novel multifunctional grain threshing test bench according to claim 1, Features: The threshing drum (C) comprises an upper cover plate (33), a lower concave plate (34) and a drum body (35); The upper cover plate (33) and the lower concave plate (34) enclose the drum body (35) therein; the outer diameter of the threshing drum (C) is 650 mm, the diameter of the drum body (35) is 500 mm, and the total length of the threshing drum (C) is 2800 mm.

3. A novel multifunctional grain threshing test bench according to claim 1, Features: The debris collection assembly (D) comprises a collection rack (36), a debris collection bag assembly (37) and a debris weighing sensor (38); The debris collecting bag assembly (37) is connected to the collecting rack (36), and the debris weighing sensor (38) is arranged at the lower part of the debris collecting bag assembly (37); the collecting rack (36) is connected to the threshing drum (C) assembly; the weighing range of the debris weighing sensor (38) is 0 to 500 kg.

4. A novel multifunctional grain threshing test bench according to claim 1, Features: The control assembly (F) is placed on the ground at the side of the threshing drum (C) to collect metering sensor data of the feeding metering assembly (A), torque speed sensor (40) data of the energy supply transmission assembly (E), weighing data of the weighing metering assembly (29) below the grain receiving hopper assembly (28), and sundries weighing data of the sundries collection assembly (D); the control assembly (F) can change the speed of the variable frequency asynchronous motor (1) of the feeding metering assembly (A), the speed of the driving motor (39) of the energy supply transmission assembly (E), and the speed of the fan (27) in real time; the control assembly (F) controls the extension and retraction of the regulating hydraulic cylinder (17) of the threshing drum (C).

Images