Durability test equipment and test method for corn pulling chain

Abstract

The present invention relates to the field of chains, and specifically discloses a durability test device and a test method for corn plowing chains. The durability test device at least includes a frame, a drive module and a loading module, wherein the frame is provided with a horizontally arranged test bench; the drive module includes a power unit and a driving sprocket, the power unit is connected to the driving sprocket, and is used to drive the driving sprocket to rotate around a vertical axis; it includes a fixed base and a movable mounting seat, the fixed base is arranged on the test bench, the movable mounting seat is slidably connected to the fixed base, and a driven sprocket is arranged on the movable mounting seat; the loading module also includes a loading elastic member arranged between the fixed base and the movable mounting seat. The above-mentioned durability test device can run the chain to be tested in a horizontally installed posture, the test conditions are more realistic, and the test results are more accurate.

Description

Technical Field

[0001] The invention relates to the field of chains, and in particular to a durability test device and a test method for a corn plowing chain. Background Art

[0002] Agricultural modernization means building agriculture on the basis of modern science, equipping agriculture with modern science and technology and modern industry, managing agriculture with modern economic science, creating a high-yield, high-quality, low-consumption agricultural production system, and an agricultural ecosystem that rationally utilizes resources, protects the environment, and has a high conversion efficiency. Among them, the modernization of production equipment is an important part of agricultural modernization, and agricultural product harvesting equipment is one of the most common agricultural production equipment.

[0003] Corn harvesters are the main equipment for harvesting corn, and have the advantages of high automation and high harvesting efficiency. Among them, the ear-breaking mechanism is one of the core components of the corn harvester, which is used to directional move corn plants and pick off corn plants. The ear-breaking mechanism usually includes a reed chain, which is used to directional move and gather corn plants. The Chinese invention patent application with application publication number CN 105684639A discloses a floating reed disc chain combined roller plate type corn ear-breaking mechanism, which records the structure and working mode of the corn reed chain.

[0004] Wear is the most common failure mode of corn reel chain. Given the working mode of corn reel chain, each component will wear during the working process. The main wear occurs when the adjacent chain links swing against each other when the chain engages in and out of the sprocket, causing wear on the pressure surface between the pin and the sleeve. Wear will increase the total length of the chain and increase the impact during starting and reversing. When the wear accumulates to a certain extent, the meshing between the chain and the sprocket will become abnormal, causing vibration, noise and other forms of operation abnormalities.

[0005] Therefore, it is necessary to test the wear resistance of the reed chain. The Chinese invention patent with the authorization announcement number CN 104764601B discloses a chain wear comparison test machine, which includes two longitudinal sprocket mechanisms and one transverse sprocket mechanism, wherein the two longitudinal sprocket mechanisms are used to install the chain to be tested, and the transverse sprocket mechanism is used to transmit between the two longitudinal sprocket mechanisms. Through the above-mentioned chain wear comparison test machine, the wear resistance of the chain can be tested in a way that simulates the actual operating conditions, which has the advantages of simple structure, easy use and reliable data.

[0006] Given the working mode of corn harvesters, corn reel chains are usually set at an angle tending to the horizontal and run in a plane tending to the horizontal. In the above chain wear test equipment, the chain is set in a vertical form, which is different from the setting form of the corn reel chain, and the corresponding simulated working conditions are also different, making it difficult to accurately obtain the wear test data of the corn reel chain. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a durability test device and a test method for a corn plowing chain. The chain to be tested is operated in a horizontally installed posture, the test conditions are more realistic, and the test results are more accurate.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a durability test device for a corn plowing chain, comprising at least:

[0009] A frame, wherein the frame is provided with a horizontally arranged test bench, and the test bench is provided with an adjustment seat;

[0010] A driving module, wherein the driving module comprises a power unit and a driving sprocket, wherein the power unit is connected to the driving sprocket and is used to drive the driving sprocket to rotate around a vertical axis;

[0011] The loading module comprises a fixed base and a movable mounting seat, wherein the fixed base is arranged on the test bench, the movable mounting seat is slidably connected with the fixed base, and a driven sprocket is arranged on the movable mounting seat;

[0012] An operating interval is formed between the driving sprocket and the driven sprocket, and the sliding direction of the movable mounting seat is consistent with the extension direction of the operating interval; the fixed base is connected to the adjustment seat, and the adjustment seat can be translated and adjusted relative to the test bench in the extension direction of the operating interval;

[0013] The loading module also includes a loading elastic member arranged between the fixed base and the movable mounting seat.

[0014] During the test, the chain is set and operated in a horizontal form, which can better simulate the working conditions of the corn plowing chain, and the test results are more accurate and reliable. In addition, the floating setting of the driven sprocket can ensure that the chain is in a loaded and tensioned state during the entire test process.

[0015] Preferably, the test bench is further provided with a guide seat, the guide seat is provided with a guide groove, the adjustment seat is arranged in the guide groove, and is adjusted in translation along the extension direction of the guide groove. The guide seat and the guide groove play the role of adjusting the translation direction of the adjustment seat.

[0016] Preferably, the test bench is further provided with a support plate, and part or all of the operating range is located above the support plate.

[0017] During the test, the chain is suspended above the support plate. When the chain sags under the action of gravity or other external forces, the support plate can form a buffer between the chain and the test bench to prevent the chain from contacting the test bench, thereby protecting the chain and the test bench.

[0018] Preferably, the power unit comprises a driving member and a transmission member, the transmission member comprises a gearbox, and the driving sprocket is detachably connected to the output shaft of the gearbox.

[0019] The driving sprocket can be easily disassembled and replaced to adapt to different types of chains, and it is also convenient for maintenance of the driving sprocket.

[0020] Preferably, the loading module further comprises a guide rod, the guide rod is connected to the fixed base, and the length direction of the guide rod is arranged parallel to the sliding direction of the corresponding movable mounting seat;

[0021] The loading elastic member is a spring sleeved on the guide rod. During the test, the loading elastic member is in an energy storage state.

[0022] Preferably, the guide rod is axially adjustable relative to the fixed base.

[0023] By adjusting the position of the guide rod relative to the fixed base, the initial load can be adjusted.

[0024] Preferably, the invention further comprises a control component, wherein the control component comprises a control unit and a detection unit, wherein the detection unit and the power unit are electrically connected to the control unit respectively; the detection unit is used to monitor the movement of the guide rod relative to the fixed base during the experiment;

[0025] During the test, when the guide rod moves to a preset position relative to the fixed base, the control unit controls the power unit to stop working.

[0026] Preferably, the detection unit comprises a sensor arranged on a fixed base, and a positioning member arranged on a guide rod;

[0027] When the positioning member moves relative to the positioning base to within a certain range of the sensor, it is considered that the guide rod moves relative to the fixed base to a preset position, and the control unit controls the power unit to stop working.

[0028] Preferably, the test bench is provided with at least two loading modules, the driving sprocket corresponds to the loading module one by one, the driven sprocket corresponds to the driving sprocket one by one, and the motion intervals corresponding to the loading modules are arranged relatively parallel. Comparative tests can be performed, test efficiency can be improved, and the accuracy of test results can be improved.

[0029] A durability test method for a corn plowing chain, using the durability test equipment as described above;

[0030] At least the following steps are included:

[0031] Step 1: Install the chain to be tested between the driving sprocket and the driven sprocket, and the loading elastic member is in the energy storage state;

[0032] Step 2: The power unit starts working, and the driving wheel drives the chain to be tested and the driven sprocket to start running;

[0033] Step 3: When the elongation of the chain to be tested reaches a preset value, the power unit stops working; and whether the durability of the chain to be tested is qualified is determined based on the running time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural schematic diagram of the durability test equipment for corn plowing chain in the present embodiment in the test state;

[0035] Figure 2 This is a schematic structural diagram of a durability test device for a corn plowing chain according to this embodiment;

[0036] Figure 3 This is a schematic structural diagram of the durability test equipment for corn plowing chains in this embodiment with the frame removed;

[0037] Figure 4 It is a top view of the durability test equipment for corn plowing chain of this embodiment;

[0038] Figure 5 This is a schematic diagram of the installation of the recording module in the durability test equipment for the corn plowing chain of this embodiment;

[0039] Figure 6 This is a schematic structural diagram of a guide seat in a durability test device for a corn plowing chain according to this embodiment;

[0040] Figure 7 This is a schematic structural diagram of a loading module in a durability test device for a corn plowing chain according to this embodiment;

[0041] Figure 8 This is an exploded view of a loading module in a durability test device for a corn plowing chain in this embodiment;

[0042] Fig. 9 It is a top view of the loading module in the durability test equipment for corn plowing chain in this embodiment;

[0043] Fig.10 for Fig. 9 Middle AA section view;

[0044] Fig.11 for Fig. 9 Middle BB section view. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0046] like Figure 1 and Figure 2 As shown, a durability test device for a corn plowing chain at least includes a frame 1, a driving module 2 and a loading module 3.

[0047] Among them, Figure 2 and Figure 3 As shown, a horizontally arranged test bench 11 is disposed on the frame 1 , and an adjustment seat 13 is disposed on the test bench 11 . The adjustment seat 13 can be adjusted in translation relative to the test bench 11 .

[0048] Further, such as Figure 5 and Figure 6 As shown, the test bench 11 is also provided with a guide seat 14, the guide seat 14 is provided with a guide groove, the adjustment seat 13 is arranged in the guide groove, and is adjusted in translation along the extension direction of the guide groove. The guide seat 14 and the guide groove play the role of adjusting the translation direction of the adjustment seat 13.

[0049] like Figure 5 and Figure 6 As shown, the guide seat 14 is also provided with a limit block 16 , and the limit block 16 is provided with a limit groove, which is used to limit the movement direction of the movable mounting seat 36 and cooperates with the fixed base 32 to limit the movable mounting seat 36 .

[0050] Among them, Figure 1-Figure 3 As shown, the driving module 2 includes a power unit and a driving sprocket 22. The power unit is connected to the driving sprocket 22 and is used to drive the driving sprocket 22 to rotate around a vertical axis.

[0051] Specifically, Figure 1-Figure 3 As shown, the power unit includes a driving member 21 and a transmission member 23, wherein the transmission member 23 includes a gearbox, and the driving sprocket 22 is detachably connected to the output shaft of the gearbox. The driving sprocket 22 can be easily disassembled and replaced to adapt to different types of chains, and it is also convenient to maintain the driving sprocket 22.

[0052] Among them, Figure 7-Figure 11As shown, the loading module 3 includes a fixed base 32 and a movable mounting seat 36. The fixed base 32 is arranged on the test bench 11. The movable mounting seat 36 is slidably connected to the fixed base 32. The movable mounting seat 36 is provided with a driven sprocket 31. Figure 4 As shown, the driving sprocket 22 and the driven sprocket 31 form an operating interval 15, and the sliding direction of the movable mounting seat 36 is consistent with the extension direction of the operating interval 15. The loading module 3 also includes a loading elastic member 34 disposed between the fixed base 32 and the movable mounting seat 36.

[0053] Specifically, Figure 3 and Figure 5 As shown, the fixed base 32 is connected to the adjustment base, and the translation direction of the adjustment base relative to the test bench 11 is consistent with the extension direction of the operating range 15. The relative position between the driving sprocket 22 and the driven sprocket 31 can be adjusted by adjusting the form of the adjustment base to meet the test requirements of chains of different lengths.

[0054] During the test, the chain is arranged and operated in a horizontal form, which can better simulate the use condition of the corn plowing chain, and the test result is more accurate and reliable. In addition, the driven sprocket 31 is arranged in a floating manner, which can ensure that the chain is in a loaded tension state during the entire test process.

[0055] Further, such as Figure 2 and Figure 3 As shown, the test bench 11 is further provided with a support plate 12, and the operating range 15 is partially or entirely located above the support plate 12. During the test, the chain is suspended above the support plate 12. When the chain sags under the action of gravity or other external forces, the support plate 12 can form a buffer between the chain and the test bench 11 to prevent the chain from contacting the test bench 11, thereby protecting the chain and the test bench 11.

[0056] Further, such as Figure 7-Figure 11 As shown, the loading module 3 further includes a guide rod 35, which is connected to the fixed base 32, and the length direction of the guide rod 35 is arranged parallel to the sliding direction of the corresponding movable mounting seat 36. The loading elastic member 34 is a spring sleeved on the guide rod 35. During the test, the loading elastic member 34 is in an energy storage state. The guide rod 35 can be axially adjusted relative to the fixed base 32.

[0057] By adjusting the position of the guide rod relative to the fixed base 32 , the initial load can be adjusted.

[0058] Furthermore, Figure 7-Figure 11As shown, the apparatus further includes a control component, which includes a control unit and a detection unit 33. The detection unit 33 and the power unit are electrically connected to the control unit respectively; the detection unit 33 is used to monitor the movement of the guide rod 35 relative to the fixed base 32 during the experiment. During the experiment, when the guide rod 35 moves to a preset position relative to the fixed base 32, the control unit controls the power unit to stop working.

[0059] Specifically, Figure 7-Figure 11 As shown, the detection unit 33 includes a sensor disposed on the fixed base 32, and a positioning member disposed on the guide rod 35. When the positioning member moves relative to the positioning base to a certain range of the sensor, it is considered that the guide rod 35 moves relative to the fixed base 32 to a preset position, and the control unit controls the power unit to stop working.

[0060] Furthermore, if Figure 1 and Figure 2 As shown, the test bench 11 is provided with at least two loading modules 3, the driving sprocket 22 corresponds to the loading module 3 one by one, the driven sprocket 31 corresponds to the driving sprocket 22 one by one, and the motion intervals corresponding to the loading modules 3 are relatively parallel. Comparative tests can be performed, test efficiency can be improved, and the accuracy of test results can be improved.

[0061] A durability test method for a corn plowing chain, using the durability test equipment as described above;

[0062] At least the following steps are included:

[0063] Step 1: Install the test chain 4 between the driving sprocket 22 and the driven sprocket 31, and the loading elastic member 34 is in the energy storage state;

[0064] Step 2: The power unit starts working, and the driving wheel drives the chain 4 to be tested and the driven sprocket 31 to start running;

[0065] Step 3: When the elongation of the chain 4 to be tested reaches a preset value, the power unit stops working; and whether the durability of the chain 4 to be tested is qualified is determined based on the running time.

[0066] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A durability test device for corn pulling chain, characterized in that: At least: A frame, wherein the frame is provided with a horizontally arranged test bench, and the test bench is provided with an adjustment seat; A driving module, wherein the driving module comprises a power unit and a driving sprocket, wherein the power unit is connected to the driving sprocket and is used to drive the driving sprocket to rotate around a vertical axis; The loading module comprises a fixed base and a movable mounting seat, wherein the fixed base is arranged on the test bench, the movable mounting seat is slidably connected with the fixed base, and a driven sprocket is arranged on the movable mounting seat; An operating interval is formed between the driving sprocket and the driven sprocket, and the sliding direction of the movable mounting seat is consistent with the extension direction of the operating interval; the fixed base is connected to the adjustment seat, and the adjustment seat can be adjusted in translation relative to the test bench along the extension direction of the operating interval; during the test, the chain is set and operated in a horizontal form; The loading module further comprises a loading elastic member arranged between the fixed base and the movable mounting seat; The loading module further comprises a guide rod, the guide rod is connected to the fixed base, and the length direction of the guide rod is arranged parallel to the sliding direction of the corresponding movable mounting seat; The loading elastic member is a spring sleeved on the guide rod. During the test, the loading elastic member is in an energy storage state. It also includes a control component, the control component includes a control unit and a detection unit, the detection unit and the power unit are electrically connected to the control unit respectively; the detection unit is used to monitor the movement of the guide rod relative to the fixed base during the experiment; During the test, when the guide rod moves to a preset position relative to the fixed base, the control unit controls the power unit to stop working; The detection unit comprises a sensor arranged on a fixed base, and a positioning member arranged on a guide rod; When the positioning member moves relative to the positioning base to within a certain range of the sensor, it is considered that the guide rod moves relative to the fixed base to a preset position, and the control unit controls the power unit to stop working.

2. The durability test equipment according to claim 1, characterized in that: The test bench is also provided with a guide seat, the guide seat is provided with a guide groove, the adjustment seat is arranged in the guide groove, and is adjusted by translation along the extension direction of the guide groove.

3. The durability test equipment according to claim 1, characterized in that: The test bench is also provided with a supporting plate, and part or all of the operating range is located above the supporting plate.

4. The durability test equipment according to claim 1, characterized in that: The power unit comprises a driving member and a transmission member, the transmission member comprises a gearbox, and the driving sprocket is detachably connected to the output shaft of the gearbox.

5. The durability test equipment according to claim 1, characterized in that: The guide rod can be axially adjusted relative to the fixed base.

6. The durability test equipment according to any one of claims 1 to 5, characterized in that: The test bench is provided with at least two loading modules, the driving sprockets correspond to the loading modules one by one, the driven sprockets correspond to the driving sprockets one by one, and the motion intervals corresponding to the loading modules are arranged relatively parallel.

7. A durability test method for a corn pulling chain, characterized in that: Using the durability test equipment as described in any one of claims 1 to 6; At least the following steps are included: Step 1: Install the chain to be tested between the driving sprocket and the driven sprocket, and the loading elastic member is in the energy storage state; Step 2: The power unit starts working, and the driving wheel drives the chain to be tested and the driven sprocket to start running; Step 3: When the elongation of the chain to be tested reaches a preset value, the power unit stops working; and whether the durability of the chain to be tested is qualified is determined based on the running time.

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