Threshing and cleaning test bed

Abstract

The utility model relates to the field of harvester threshing and cleaning test equipment, and discloses a threshing and cleaning test bed which comprises a test bed frame, a threshing system and a cleaning system, the threshing system and the cleaning system are respectively installed on the test bed frame, the cleaning system receives crop grains threshed by the threshing system and can remove impurities contained in the crop grains, and the cleaning system is connected with the threshing system and the cleaning system. Transparent observation plates are installed on the two sides of the test bed and correspond to the threshing system and / or the cleaning system respectively, so that the material flowing condition in the threshing system and / or the cleaning system can be observed from the outer side of the test bed, and / or material flowing track images can be collected. By means of the technical scheme, the transparent observation plates are installed on the two sides of the test bed, the material flowing condition in a threshing system and / or a cleaning system can be observed, and / or material flowing track images can be collected, when test parameters change, the influence of parameter changes on the threshing and cleaning effects can be observed more visually, and the better test effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a harvester threshing and cleaning test equipment field, concretely relates to a threshing and cleaning test bench. BACKGROUND

[0002] In the field of harvester, in order to develop the harvester with better performance, need to test the influence of multiple operation performance parameters on the performance of harvester, improve its structure. Because the sample machine is influenced by multiple factors in the field test, inconvenient operation, therefore, the threshing and cleaning test bench is usually used to simulate the threshing and cleaning process of field operation, thereby judging the influence of each parameter on the overall performance of the threshing and cleaning system of harvester.

[0003] The threshing and cleaning test bench in the prior art cannot observe the material flow condition in the threshing and cleaning process, and it is inconvenient to study the influence of the specific parameter change of the threshing and cleaning system on the threshing and cleaning effect. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of threshing and cleaning test benches, including test bench and respectively installed to the threshing system and the cleaning system of the test bench frame, the cleaning system receives crop grain after threshing by threshing system and can remove the impurities contained in the crop grain, in the position corresponding to threshing system and / or cleaning system, two sides of test bench frame are respectively installed with transparent observation board, to allow observing the material flow condition and / or collecting material flow trajectory image in threshing system and / or cleaning system from the outside of test bench frame.

[0005] To achieve the above object, the utility model provides a kind of threshing and cleaning test bench, including test bench and respectively installed to the threshing system and the cleaning system of the test bench frame, the cleaning system receives crop grain after threshing by threshing system and can remove the impurities contained in the crop grain, in the position corresponding to threshing system and / or cleaning system, two sides of test bench frame are respectively installed with transparent observation board, to allow observing the material flow condition and / or collecting material flow trajectory image in threshing system and / or cleaning system from the outside of test bench frame.

[0006] In some embodiments, transparent observation board includes multiple transparent acrylic plates installed on test bench frame.

[0007] In some embodiments, test bench frame includes cut-flow test bench body and axial-flow test bench body detachably connected with each other, threshing system includes cut-flow threshing mechanism adjustably installed on cut-flow test bench body and axial-flow threshing mechanism adjustably installed on axial-flow test bench body, the axial-flow threshing mechanism is set to be capable of receiving material discharged by cut-flow threshing mechanism, and cleaning system is arranged below axial-flow threshing mechanism.

[0008] In some embodiments, threshing and cleaning test bench further includes feeding system, and cut-flow test bench body is set to be capable of being selectively arranged between feeding system and axial-flow test bench body or removed to feed to-be-threshed material to cut-flow threshing mechanism or axial-flow threshing mechanism by feeding system.

[0009] In some embodiments, the threshing and cleaning test bench further comprises a material conveying belt arranged at a side of the feeding system away from the test bench frame.

[0010] In some embodiments, the axial flow test bench body is configured to selectively install a single longitudinal axial flow threshing mechanism or a double longitudinal axial flow threshing mechanism, and / or the cross flow test bench body is configured to selectively install cross flow threshing mechanisms of different specifications.

[0011] In some embodiments, the cross flow test bench body comprises a fixed frame and an adjustable mounting frame adjustably mounted on the fixed frame by a screw nut adjusting mechanism, which can be operated to adjust the adjustable mounting frame to be suitable for installing cross flow threshing mechanisms of different specifications.

[0012] In some embodiments, the cleaning system is configured to be adjusted to have different cleaning air speeds, and a wind speed sensor matrix for measuring the wind speed values is arranged in the air field of the cleaning system.

[0013] In some embodiments, the threshing and cleaning test bench further comprises a material receiving unit for receiving the sieve chaff separated from the crop grains, the material receiving unit comprising a fixed groove and a receiving disc arranged in the fixed groove and capable of being taken out of the fixed groove.

[0014] In some embodiments, a horizontal opening is arranged at one side of the fixed groove, and the receiving disc comprises:

[0015] a bottom disc arranged in the fixed groove;

[0016] a detailed receiving box arranged above the bottom disc and separated into a plurality of receiving box units in the length direction and the width direction to display the distribution of the material; and

[0017] a handle arranged at a side of the bottom disc facing the horizontal opening and protruding out of the fixed groove.

[0018] Through the above technical solutions, the transparent observation plate is installed on both sides of the test bench frame, the material flow in the threshing system and / or the cleaning system can be observed and / or the material flow trajectory image can be collected, when the test parameters change, the influence of the parameter change on the threshing and cleaning effect can be more intuitively observed, and better test effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of a threshing and cleaning test bench of an embodiment of the present application, wherein a cross flow test bench body and an axial flow test bench body are arranged, and a double longitudinal axial flow threshing mechanism is installed;

[0020] Figure 2 is another embodiment of the threshing and cleaning test bench of the present application, wherein the cross flow test bench body is not arranged.

[0021] Figure 3 is a side view of the threshing and cleaning test bed of the embodiment of the utility model;

[0022] Figure 4 is a schematic view of the cutting flow test bed body of the threshing and cleaning test bed of the embodiment of the utility model;

[0023] Figure 5 is a schematic view of the material receiving unit of the threshing and cleaning test bed of the embodiment of the utility model;

[0024] Figure 6 is a schematic view of the axial flow test bed body of the threshing and cleaning test bed of the embodiment of the utility model, wherein a single longitudinal axial flow threshing mechanism is installed;

[0025] Figure 7 is another perspective side view of the threshing and cleaning test bed of the embodiment of the utility model.

[0026] Explanation of reference signs

[0027] 1, material conveying belt; 2, feeding system;

[0028] 3, cutting flow test bed body; 31, fixed rack; 32, adjustable mounting rack; 33, screw nut adjusting mechanism; 331, screw rod; 332, handle; 333, fixed adjusting plate;

[0029] 4, axial flow test bed body; 41, axial flow cylinder; 42, mounting fulcrum; 43, oil cylinder;

[0030] 5, wind field test bed body; 6, vibrating screen test bed body;

[0031] 7, material receiving unit; 71, fixed groove; 72, material receiving disc;

[0032] 721, base plate; 722, refined material receiving box; 723, handle;

[0033] 8, transparent observation plate; 9, test bed frame. DETAILED DESCRIPTION

[0034] In the utility model, in the case where opposite description is not made, the orientation words such as "up", "down", "left", "right", "inner", "outer" and the like used are only for indicating the orientation or position relationship for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. When the absolute position of the described object changes, the relative position relationship can also change accordingly.

[0035] To address the limitations of existing technologies that fail to observe the material flow during the threshing and cleaning process, and hinder the study of the impact of specific parameter changes in the threshing and cleaning system on the threshing and cleaning effect, this invention provides a threshing and cleaning test bench, such as... Figures 1-3 As shown, the threshing and cleaning test bench includes a test bench frame 9 and a threshing system and a cleaning system respectively installed on the test bench frame 9. The cleaning system receives crop grains threshed by the threshing system and removes impurities contained in the crop grains. Transparent observation plates 8 are installed on both sides of the test bench frame 9 at the locations corresponding to the threshing system and / or the cleaning system. Through the transparent observation plates 8, the material flow in the threshing system and / or the cleaning system can be observed from the outside of the test bench frame 9, and / or, images of the material flow trajectory in the threshing system and the cleaning system can be captured using a high-speed camera. Through the above technical solution, when the experimental parameters change, the material flow can be observed intuitively through the transparent observation plates 8, and / or images of the material flow trajectory can be captured, thereby obtaining the impact of various parameter changes on the threshing and cleaning effects and achieving better experimental results.

[0036] In some embodiments, the transparent observation plate 8 comprises multiple transparent acrylic plates mounted on the test bench 9. On one hand, the acrylic plates can be configured to have high transparency, allowing observation of material flow and acquisition of material flow trajectory images from the outside of the test bench 9. On the other hand, the acrylic plates have relatively good mechanical properties, enabling them to adapt well to the working environment during the testing process. It is understood that the transparent observation plate 8 can also be made of other materials, such as transparent glass or PVC transparent plates. Furthermore, high-speed cameras can be installed on the left and right sides of the threshing chamber. Image post-processing can be used to obtain the grain detachment trajectory, determining whether the gripping ability of different threshing structures is sufficient, whether there are blockages in the blade conveyor, whether the axial flow channel is smooth, and whether the straw discharge and top cover are smooth.

[0037] In some embodiments, such as Figure 1 As shown, the test bench 9 includes a tangential flow test bench 3 and an axial flow test bench 4, which are detachably connected to each other. The threshing system includes a tangential flow threshing mechanism adjustablely mounted on the tangential flow test bench 3 and an axial flow threshing mechanism adjustablely mounted on the axial flow test bench 4, which thresh the fed material using tangential flow and axial flow methods respectively. The axial flow threshing mechanism is configured to receive the material discharged from the tangential flow threshing mechanism. A cleaning system is located below the axial flow threshing mechanism to remove impurities generated during the threshing process.

[0038] In some embodiments, such as Figures 1-2As shown, the threshing and cleaning test bench further comprises a feeding system 2 to feed the material to be threshed to the cross-flow threshing mechanism or the axial-flow threshing mechanism by the feeding system 2. The cross-flow test bench body 3 is arranged to be selectively disposed between the feeding system 2 and the axial-flow test bench body 4 or removed, as shown in Figure 2 A schematic view is shown when the cross-flow test bench body 3 is removed, at this time the threshing and cleaning test bench only uses the longitudinal-flow system for threshing. The relatively independent modules between the cross-flow system and the longitudinal-flow system of the threshing and cleaning test bench can also remove the longitudinal-flow system, test the cross-flow system alone, or combine the cross-flow system and the longitudinal-flow system to test the cross-longitudinal multi-stage threshing system.

[0039] In some embodiments, as shown in Figures 1-2 As shown, the threshing and cleaning test bench further comprises a material conveying belt 1 disposed on the side of the feeding system 2 away from the test bench frame 9, and the crops required for the test can be conveyed to the feeding system 2 by the material conveying belt 1, and then fed to the threshing system for threshing.

[0040] In some embodiments, the axial-flow test bench body 4 is arranged to selectively install a single longitudinal axial-flow threshing mechanism or a double longitudinal axial-flow threshing mechanism. As shown in Figure 1 A schematic view is shown when the double longitudinal axial-flow threshing mechanism is installed, Figure 6 A schematic view is shown when the single longitudinal axial-flow threshing mechanism is installed. The test bench can change different test bench body components on the test bench frame as required by the experiment through component modularization, and achieve convenient, fast and effective installation. Figure 7The side view of the axial flow test bench body 4 is shown, and the longitudinal axial flow system adopts a modular design. The single longitudinal axial flow threshing mechanism or the double longitudinal axial flow threshing mechanism has a common mounting fulcrum 42 on the axial flow test bench body 4. An oil cylinder 43 is further arranged at the tail of the axial flow cylinder 41. The mounting fulcrum 42 and the oil cylinder 43 jointly provide support for the axial flow cylinder 41, facilitating quick assembly and disassembly when switching between single / double longitudinal axial flow cylinders. The axial flow test bench body 4 can selectively install a mounting rack adapted to the single longitudinal axial flow threshing mechanism or the double longitudinal axial flow threshing mechanism to test the threshing performance of the single longitudinal axial flow threshing mechanism or the double longitudinal axial flow threshing mechanism. Thus, when switching from a single longitudinal axial flow threshing mechanism to a double longitudinal axial flow threshing mechanism, the single longitudinal mode axial flow cylinder 41 is removed, and the double longitudinal mode two axial flow cylinders 41 are installed in alignment with the mounting fulcrum 42 and the support point of the oil cylinder 43 of the rack bench body, and are respectively connected to the conveying pipeline and the transmission device. The oil cylinder 43 can adjust the angle of the axial flow cylinder 41, with the mounting fulcrum 42 as the support rotation point of the axial flow cylinder 41, for testing the influence of the cylinder inclination angle on the threshing performance. The transmission device can adopt a belt or a telescopic universal joint. When switching between single / double longitudinal axial flow threshing mechanisms and adjusting the inclination angle of the axial flow cylinder 41, the belt tension or the extension amount of the universal joint is adjusted to adapt to the switching of the single / double longitudinal axial flow threshing mechanisms and the angle change of the axial flow cylinder 41. Through the recess plate gap adjusting mechanism possessed by the threshing mechanism itself, the recess plate gap of the threshing mechanism can be adjusted to test the threshing performance under different recess plate gaps.

[0041] In some embodiments, the axial flow test bench body 3 is configured to selectively install different specifications of axial flow threshing mechanisms to test the influence of different specifications of axial flow threshing mechanisms on the threshing effect.

[0042] In some embodiments, the axial flow test bench body 3 includes a fixed rack 31 and an adjustable mounting rack 32 adjustably mounted on the fixed rack 31 through a screw nut adjusting mechanism 33. The screw nut adjusting mechanism 33 can be operated to adjust the adjustable mounting rack 32 to be suitable for installing different specifications of axial flow threshing mechanisms. Figure 4The specific embodiment of the screw nut adjusting mechanism 33 is shown: the screw nut mechanism 33 includes a screw rod 331 and a handle 332, the screw rod 331 is screwed to the adjustable mounting frame 32 along the length direction of the fixed frame 31, and the handle 332 is fixedly connected to the outer end of the screw rod 331. By rotating the handle of the handle 332, the adjustable mounting frame 32 is closer or farther away from each other along the length direction of the fixed frame 31, and the spacing between the adjustable mounting frames 32 is adjusted according to the width of the threshing and cleaning test bench body 3. After the position of the adjustable mounting frame 32 is fixed, the adjustable mounting frame 32 and the fixed frame 31 are fixed together through the detachable fixed adjusting plate 333, and the fixed adjusting plate 333 is fixed on the adjustable mounting frame 32 and the fixed frame 31 by screws, and the width adjustment of the threshing and cleaning test bench body 3 is completed. Through the above structure, the width of the threshing and cleaning test bench body 3 is adjusted to install the different width of the cutting flow cylinder, so as to be suitable for the test verification of the threshing and cleaning system from small feeding amount to large feeding amount. The coupling can be arranged on the output shaft of the cutting flow motor to adjust the length of the motor output shaft or replace the shaft sleeve of different length to adapt to the cutting flow cylinder of different width.

[0043] In some embodiments, the cleaning system is arranged to be adjustable to have different cleaning air speeds, and the cleaning system includes a wind field test bench body 5, a wind speed sensor matrix is arranged in the wind field for measuring the wind speed value, the wind speed value of different areas of the screen surface is measured, the wind field wind speed contour line is drawn, the wind field test result is more intuitive, the wind field distribution can be clearly understood, and the advantages and disadvantages of the wind field can be judged.

[0044] In some embodiments, as shown in Figure 1 The threshing and cleaning test bench further includes a material receiving unit 7 for receiving the screen chaff separated from the crop grains after threshing, cleaning and passing through the vibrating screen test bench body 6. The structure of the material receiving unit 7 is specifically shown in Figure 5

[0045] In some embodiments, as shown in Figure 5 ​As shown, one side of the fixed groove 71 is provided with a horizontal opening, the receiving tray 72 comprises: a bottom tray 721, the bottom tray 721 is arranged in the fixed groove 71, the fixed groove 71 is used for fixing the bottom tray 721, and the bottom tray 721 is limited in the range of the fixed groove 71; a refined receiving box 722, the refined receiving box 722 is arranged above the bottom tray 721, and the refined receiving box 722 is divided into a plurality of receiving box units along the length direction and the width direction to display the distribution of the material; and a handle 723, the handle 723 is arranged on the side of the bottom tray 721 facing the horizontal opening and protrudes out of the fixed groove 71. The whole receiving tray 72 is lifted by the handle 723 and taken out of the fixed groove 71. The receiving unit 7 can be placed in multiple groups at the bottom of the cleaning system device to receive the material. When the test material is received, the receiving tray 72 is removed as a whole, and the refined receiving box 722 is taken out to survey the material falling into the box. The uniformity of the material falling from different threshing systems can be judged by observing the thickness of the refined receiving box 722. Compared with the traditional whole receiving tray, the receiving system can more intuitively reflect the area of the material falling, and the received material can be more clearly and modularly reflected.

[0046] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited thereto. Within the technical concept of the present application, the technical solution of the present application can be variously modified, including various specific technical features combined in any suitable manner. In order to avoid unnecessary repetition, the present application will not be described again for various possible combination manners. However, these simple modifications and combinations should also be regarded as the disclosed content of the present application and belong to the protection scope of the present application.

Claims

1. A threshing and cleaning test bench, characterized in that, The test bench (9) includes a test bench (9) and a threshing system and a cleaning system respectively installed on the test bench (9). The cleaning system receives crop grains threshed by the threshing system and is able to remove impurities contained in the crop grains. At the positions corresponding to the threshing system and / or the cleaning system, transparent observation plates (8) are respectively installed on both sides of the test bench (9) to allow observation of the material flow in the threshing system and / or the collection of material flow trajectory images from the outside of the test bench (9).

2. The threshing and cleaning test bench according to claim 1, characterized in that, The transparent observation plate (8) includes multiple transparent acrylic plates mounted on the test bench (9).

3. The threshing and cleaning test bench according to claim 1, characterized in that, The test bench (9) includes a tangential flow test bench (3) and an axial flow test bench (4) that are detachably connected to each other. The threshing system includes a tangential flow threshing mechanism adjustablely mounted on the tangential flow test bench (3) and an axial flow threshing mechanism adjustablely mounted on the axial flow test bench (4). The axial flow threshing mechanism is configured to receive the material discharged by the tangential flow threshing mechanism. The cleaning system is located below the axial flow threshing mechanism.

4. The threshing and cleaning test bench according to claim 3, characterized in that, The threshing and cleaning test bench also includes a feeding system (2), and the tangential flow test bench (3) is configured to be selectively arranged between the feeding system (2) and the axial flow test bench (4) or to be removed, so that the feeding system (2) can feed the material to be threshed into the tangential flow threshing mechanism or the axial flow threshing mechanism.

5. The threshing and cleaning test bench according to claim 4, characterized in that, The threshing and cleaning test bench also includes a material conveyor belt (1) located on the side of the feeding system (2) away from the test bench frame (9).

6. The threshing and cleaning test bench according to claim 3, characterized in that, The axial flow test bench (4) is configured to selectively install a single longitudinal axial flow threshing mechanism or a double longitudinal axial flow threshing mechanism, and / or the tangential flow test bench (3) is configured to selectively install the tangential flow threshing mechanism of different specifications.

7. The threshing and cleaning test bench according to claim 6, characterized in that, The shear flow test bench (3) includes a fixed frame (31) and an adjustable mounting bracket (32) that is adjustablely mounted on the fixed frame (31) via a screw and nut adjustment mechanism (33). The screw and nut adjustment mechanism (33) can be manipulated to adjust the adjustable mounting bracket (32) to be suitable for mounting different specifications of the shear flow threshing mechanism.

8. The threshing and cleaning test bench according to claim 1, characterized in that, The cleaning system is configured to be adjustable to different cleaning wind speeds, and an array of wind speed sensors for measuring wind speed values ​​is arranged within the wind field of the cleaning system.

9. The threshing and cleaning test bench according to claim 1, characterized in that, The threshing and cleaning test bench also includes a receiving unit (7) for receiving sieve chaff separated from the crop grains. The receiving unit (7) includes a fixed groove (71) and a receiving tray (72). The receiving tray (72) is located in the fixed groove (71) and can be removed from the fixed groove (71).

10. The threshing and cleaning test bench according to claim 9, characterized in that, The fixing groove (71) has a horizontal opening on one side, and the receiving tray (72) includes: A chassis (721) is disposed in the fixing groove (71); A refined receiving box (722) is provided above the chassis (721), and the refined receiving box (722) is divided into multiple receiving box units along the length and width directions to display the distribution of materials; and, A handle (723) is provided on the side of the chassis (721) facing the horizontal opening and protrudes out of the fixing groove (71).

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