A device for detecting the hardness of a harvester cutterbar blade

Abstract

The utility model discloses a device for cutting knife blade hardness detection of harvester, related to cutting knife hardness detection field, including detection table, two support plates are fixed with on detection table upper end, and the pivot is rotatoryly equipped between two support plates, and the pivot outside is fixed with the detection fixed subassembly for fixing the cutting knife different position, detection fixed subassembly includes the multiple detection sleeve fixedly set in the pivot outside, and the diameter of multiple detection sleeve is gradually big setting, the utility model discloses the detection sleeve of different diameter in detection fixed subassembly, when the strength of cutting knife is detected, according to the diameter difference, the cutting knife speed and the difference of the fall when rotating are different, the detection sleeve of bigger diameter, the cutting knife speed and the difference of the fall when rotating are bigger, and its detection strength is stronger, and the detection sleeve of small diameter is contrary.

Description

Technical Field

[0001] This utility model relates to the field of harvester blade hardness testing, and in particular to a device for testing the hardness of harvester blades. Background Technology

[0002] A combine harvester is a machine that integrates harvesting of crops. It completes harvesting and threshing in one go, collects the grains into a storage bin, and then transports the grain to a transport vehicle via a conveyor belt. Alternatively, manual harvesting can be used, where the stalks of crops such as rice and wheat are laid out in the field and then picked up and threshed by grain harvesting machinery.

[0003] When harvesting grain, the most important part of a combine harvester is the cutting blade at the front of the harvester to cut the grain. However, when harvesting grain, there will be some stones in the soil. When the cutting blade comes into contact with the stones, the blade tip may be damaged or even broken. Therefore, it is necessary to test the hardness and impact strength of the cutting blade. However, the existing cutting blade testing is generally carried out by the Brinell hardness test method. The blade is in a relatively static state, which cannot simulate the actual working environment of the cutting blade, and the test results are not comprehensive.

[0004] Therefore, it is necessary to propose a device for detecting the hardness of harvester blades to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the hardness of harvester blades, in order to solve the problem that testing methods such as the Brinell hardness test cannot simulate the actual working environment of the harvester blades and the testing effect is not comprehensive.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for testing the hardness of harvester blades, comprising a testing table, two support plates fixedly mounted on the upper end of the testing table, a rotating shaft rotatably mounted between the two support plates, and a testing fixing assembly for fixing different positions of the harvester blade fixedly mounted on the outer side of the rotating shaft, the testing fixing assembly comprising multiple testing sleeves fixedly mounted on the outer side of the rotating shaft, the diameter of the multiple testing sleeves being gradually increased;

[0007] The upper part of the testing table is provided with a testing component for testing the strength of the harvester blade. The testing component includes multiple testing blocks that are movably disposed on the upper part of the testing table, and the height of the multiple testing blocks gradually increases.

[0008] Multiple mounting plates are fixedly provided on the outside of the detection sleeve, and threaded holes for connecting harvesting knives are provided on the mounting plates.

[0009] Preferably, the detection assembly further includes a guide base plate fixedly disposed on the upper end of the detection table. The guide base plate has multiple sets of guide grooves. Guide blocks are fixedly disposed at both ends of the detection block. The detection block slides parallel to the guide base plate through the guide blocks and guide grooves.

[0010] Preferably, the detection sleeve is hollow.

[0011] Preferably, the detection block has a detection enhancement area at one corner corresponding to the detection sleeve.

[0012] Preferably, the upper part of the testing table is fixedly provided with multiple electric cylinders, and the output end of the electric cylinder is fixedly connected to one end of the corresponding testing block.

[0013] Preferably, a protective shell is installed on the upper part of the testing table, and a drive motor is fixedly installed at one end of one of the support plates, with the output shaft of the drive motor fixedly connected to the end of the rotating shaft.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. By testing the harvester blades with different diameters in the fixed assembly, the rotation speed and drop of the harvester blades vary depending on the diameter. The larger the diameter of the testing sleeve, the greater the rotation speed and drop of the harvester blades during rotation, and the stronger the testing force. The smaller the diameter of the testing sleeve, the opposite is true. Furthermore, this collision-type testing method can best simulate the actual working environment of the harvester blades during testing, thus maximizing the testing effect.

[0016] 2. By setting the drive motor, the rotation speed of the detection sleeve can be controlled, which can further control the rotation speed of the rotating sleeve and the magnitude of the drop force, and its detection range is extremely high;

[0017] 3. By setting up multiple detection blocks, during collision detection, the detection blocks adapt to the corresponding detection sleeve, thereby reducing the movement distance of the detection blocks and enabling them to contact the harvester blade as quickly as possible, thus reducing detection time. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of the device for detecting the hardness of harvester blades of this utility model.

[0019] Figure 2 This is a schematic diagram of the device for detecting the hardness of harvester blades in this utility model from another perspective.

[0020] Figure 3 This is a schematic diagram of the detection fixing group structure of this utility model.

[0021] Figure 4This is a schematic diagram of the detection block structure of this utility model.

[0022] In the diagram: 1. Testing table; 2. Protective shell; 3. Support plate; 4. Rotating shaft; 5. Testing fixing assembly; 501. Testing sleeve; 502. Mounting plate; 503. Threaded hole; 6. Testing assembly; 601. Guide base plate; 602. Testing block; 603. Testing reinforcement area; 7. Electric cylinder; 8. Drive motor. Detailed Implementation

[0023] This utility model provides, for example Figure 1 - Figure 4 The device shown is for testing the hardness of harvester blades. It includes a testing table 1 with a protective shell 2 mounted on its upper end. Two support plates 3 are fixedly mounted on the upper end of the testing table 1. One support plate 3 has a drive motor 8 (a servo motor, existing technology, not described in detail here) fixed at one end. A rotating shaft 4 is rotatably mounted between the two support plates 3. The output shaft of the drive motor 8 is fixedly connected to the end of the rotating shaft 4. A detection fixing assembly 5 for fixing different positions of the harvester blade is fixedly mounted on the outside of the rotating shaft 4. The detection fixing assembly 5 includes multiple detection sleeves 501 fixedly mounted on the outside of the rotating shaft 4. Multiple mounting plates 502 are fixedly mounted on the outside of the detection sleeves 501. The mounting plates 502 have threaded holes 503 for connecting the harvester blade. The threaded holes 503 are mainly used to fix the harvester blade. The detection sleeves 501 are hollow, and the diameters of the multiple detection sleeves 501 gradually increase. Taking the testing table 1 from left to right as a reference, the leftmost detection sleeve 501 has the smallest diameter, and the rightmost detection sleeve 501 has the largest diameter. Figure 3 As shown.

[0024] The upper end of the testing table 1 is provided with a testing component 6 for testing the strength of the harvester blade. The testing component 6 includes multiple testing blocks 602 movably disposed on the upper end of the testing table 1. Each testing block 602 has a testing reinforcement area 603 corresponding to one corner of the testing sleeve 501. The height of the multiple testing blocks 602 gradually increases. Based on the testing table 1 from left to right, the leftmost testing block 602 is the tallest and the rightmost testing block 602 is the shortest. Multiple electric cylinders 7 are fixedly disposed on the upper end of the testing table 1. The output end of the electric cylinder 7 is fixedly connected to one end of the corresponding testing block 602.

[0025] By testing the harvester blade with different diameter detection sleeves 501 in the fixed assembly 5, the rotation speed and drop of the harvester blade are different depending on the diameter. The larger the diameter of the detection sleeve 501, the greater the rotation speed and drop of the harvester blade when it rotates, and the stronger the detection force. The smaller diameter detection sleeve 501 has the opposite effect. Moreover, this collision-type detection method can best simulate the actual working environment of the harvester blade during the test, and maximize the detection effect.

[0026] By setting the drive motor 8, the rotation speed of the detection sleeve 501 can be controlled, which can further control the rotation speed of the rotating sleeve and the magnitude of the drop force, and its detection range is extremely high.

[0027] The detection assembly 6 also includes a guide base plate 601 fixedly installed on the upper end of the detection table 1. Multiple sets of guide grooves are provided on the guide base plate 601. Guide blocks are fixedly provided at both ends of the detection block 602. The detection block 602 slides parallel to the inner side of the guide base plate 601 through the guide blocks and guide grooves. The guide blocks and guide grooves are existing technologies and will not be described in detail here.

[0028] By setting multiple detection blocks 602, during collision detection, the detection blocks 602 adapt to the corresponding detection sleeve 501, thereby reducing the moving distance of the detection blocks 602 and enabling the detection blocks 602 to contact the harvester blade as quickly as possible, reducing the detection time. The operator controls the corresponding electric cylinder 7, which drives the corresponding detection block 602 to contact the rotating harvester blade and complete the detection.

Claims

1. A device for testing the hardness of harvester blades, comprising a testing table (1), characterized in that: The upper end of the testing table (1) is fixedly provided with two support plates (3), and a rotating shaft (4) is rotatably provided between the two support plates (3). A testing fixing component (5) for fixing different positions of the harvester is fixedly provided on the outside of the rotating shaft (4). The testing fixing component (5) includes multiple testing sleeves (501) fixedly provided on the outside of the rotating shaft (4). The diameter of the multiple testing sleeves (501) gradually increases. The upper end of the testing table (1) is provided with a testing component (6) for testing the strength of the harvester blade. The testing component (6) includes multiple testing blocks (602) movably disposed on the upper end of the testing table (1). The height of the multiple testing blocks (602) gradually increases. Multiple mounting plates (502) are fixedly provided on the outside of the detection sleeve (501), and the mounting plates (502) are provided with threaded holes (503) for connecting harvesting knives.

2. The device for detecting the hardness of harvester blades according to claim 1, characterized in that: The detection component (6) also includes a guide base plate (601) fixedly installed on the upper end of the detection table (1). The guide base plate (601) has multiple sets of guide grooves. Both ends of the detection block (602) are fixedly provided with guide blocks. The detection block (602) slides parallel to the guide base plate (601) through the guide blocks and guide grooves.

3. The device for detecting the hardness of harvester blades according to claim 1, characterized in that: The detection sleeve (501) is hollow.

4. The device for detecting the hardness of harvester blades according to claim 2, characterized in that: The detection block (602) has a detection enhancement area (603) at one corner of the detection sleeve (501).

5. The device for detecting the hardness of harvester blades according to claim 2, characterized in that: The upper end of the testing table (1) is fixedly provided with multiple electric cylinders (7), and the output end of the electric cylinder (7) is fixedly connected to one end of the corresponding testing block (602).

6. The device for detecting the hardness of harvester blades according to claim 1, characterized in that: The upper end of the testing table (1) is equipped with a protective shell (2), and one of the support plates (3) is fixedly equipped with a drive motor (8) at one end. The output shaft of the drive motor (8) is fixedly connected to the end of the rotating shaft (4).

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