A vibration-damping corn harvester

Abstract

The present application relates to a kind of corn harvester of vibration reduction, mainly including header, still field machine, hydraulic oil tank, U-shaped linkage damping device. Header is connected on the chassis by spring damping structure. Still field machine is connected on the chassis by damper one. U-shaped linkage damping device is fixed on the chassis by support, and connects header and still field machine, the connection route of entire damping system is: chassis-spring damping structure-header-U-shaped linkage damping device-still field machine-damper one-chassis, header vibration is not only directly inhibited by spring damping structure and U-shaped linkage damping device, header is also indirectly restricted by still field machine damper one when high-frequency vibration, for still field machine, so that the overall damping effect is enhanced. The corn harvester of vibration reduction disclosed in the present application can well reduce the vibration and impact force generated by header and still field machine, thereby ensuring the stable operation of corn harvester and increasing the service life of machine.

Description

Technical Field

[0001] This invention patent relates to the field of agricultural machinery technology, specifically a vibration-damping corn harvester. Background Technology

[0002] Corn harvesters enable rapid harvesting, lifting, hulling, kernel storage, and straw crushing and returning to the field. The header, straw return mechanism, elevator, and grain bin are mounted on the harvester's chassis, with the header and straw return mechanism being key components and carrying significant weight. In existing technologies, during corn harvesting and movement, the header and straw return mechanism of traditional corn harvesters experience substantial vertical vibrations due to their own weight. This vibration is transmitted throughout the entire harvester via the chassis, severely impacting the performance of key components and potentially causing fatigue fractures in connecting parts. Therefore, it is necessary to research a corn harvester that reduces the vibration of the header and straw return mechanism. Summary of the Invention

[0003] The main purpose of this invention is to design a vibration-damping corn harvester to reduce the vibration and impact caused by the up-and-down movement of the header and the corn harvester, thereby ensuring the smooth operation of the corn harvester and increasing the service life of the machine.

[0004] This vibration-damping corn harvester mainly includes a header for harvesting corn, a stalk-crushing and returning-to-the-field machine, a spring-damping structure, and a U-shaped linkage vibration damping device. The header is connected to the chassis via the spring-damping structure, which dampens the header's vibration. The stalk-crushing machine is connected to the chassis via a damper, which also dampens its vibration. The U-shaped linkage vibration damping device is fixed to the chassis by a bracket and connects the header and the stalk-crushing machine, providing better linkage vibration damping for both.

[0005] The lower side of the cutting platform is provided with two pairs of lugs, which are used to connect the spring damping structure. The spring damping structure is also connected to the chassis. The spring damping structure includes a helical spring and a second damper. The two ends of the spring damping structure are connected to the cutting platform and the chassis, respectively. The upper side of the cutting platform is provided with a pair of lugs, which are used to connect the piston of the U-shaped linkage vibration damping device.

[0006] The damper 2 includes an outer cylinder 1, an inner cylinder 1 with one end coaxially slidably disposed in the outer cylinder 1, a lower support seat coaxially sleeved on the outside of the inner cylinder 1, and an upper support seat coaxially sleeved on the bottom end of the outer cylinder 1. The free end of the inner cylinder 1 is provided with a cylindrical hole 1, and one end of the outer cylinder 1 is provided with a cylindrical hole 2.

[0007] The first cylindrical hole and the second cylindrical hole are respectively connected to the lugs on the cutting table. A helical spring is sleeved between the lower support base and the upper support base and on the outer cylinder. The two end faces of the helical spring are respectively provided with spring support planes.

[0008] The U-shaped linkage vibration damping device includes a U-shaped tube, piston one, piston two, and a hydraulic oil tank. The U-shaped tube is hollow and filled with hydraulic oil. One end of the U-shaped tube is connected to piston one, and the other end is connected to piston two. The middle of the U-shaped tube is fixed to the chassis via a bracket. One end of the bracket is connected to the U-shaped tube, and the other end is welded to the chassis, serving to fix the U-shaped tube. The U-shaped tube has an oil hole, through which hydraulic oil can enter and exit the U-shaped tube when piston one and piston two move.

[0009] Piston 1 and Piston 2 are hollow cylindrical tubes that can store hydraulic oil. A damping orifice is located at the end of each cylinder, allowing hydraulic oil to enter and exit. The cylinder wall of Piston 2 has a slot, which connects the inside of the cylinder to the outside. This slot connects to the oil port of a U-shaped tube, allowing hydraulic oil to enter through the piston's damping orifice, pass through the slot, and flow through the oil port of the U-shaped tube into and out of the hydraulic oil tank.

[0010] The hydraulic oil tank includes a tank body and oil pipes. The tank body stores hydraulic oil, and the oil pipes are connected to the oil holes of a U-shaped tube. A damping hole is provided at the end of the oil pipe, which converts the kinetic energy of the hydraulic oil into heat energy. The hydraulic oil enters and exits the tank through the tank body, the oil pipes, the oil holes and slots of the U-shaped tube, and the piston damping hole.

[0011] Under the combined action of the spring-damped structure and the U-shaped linkage vibration damping device, the vertical vibration of the header is greatly reduced. The vibration reduction effect is manifested in four aspects: First, the spring-damped structure directly suppresses the vertical vibration of the header; second, the U-shaped linkage vibration damping device connects the header and the rotary drum, which in turn connects to damper one; the vibration of the header causes the piston to slide up and down along the U-shaped tube. The hydraulic oil in the U-shaped tube enters and exits the piston damping hole and the oil pipe damping hole, converting the kinetic energy of the header into the heat energy of the hydraulic oil and dissipating it. Third, when the piston of the header moves up and down in the U-shaped tube, friction is generated, and the vibration kinetic energy of the header is dissipated through the friction of the piston. Fourth, since the U-shaped linkage vibration damping device connects the header and the reamer, the entire connection route is: chassis - spring damping structure - header - U-shaped linkage vibration damping device - reamer - damper one - chassis. The header is not only directly affected by the spring damping structure and the U-shaped linkage vibration damping device, but also indirectly affected by the damper one of the reamer, thus enhancing the vibration damping effect.

[0012] The upper end of the fertilizing machine is provided with five pairs of lugs. Two pairs of lugs are connected to the chassis via connecting rods, and the other two pairs of lugs are connected to the chassis via damper one. The remaining pair of lugs is used to connect to piston one of the U-shaped linkage damping device. Damper one includes an outer cylinder two and an inner cylinder two, one end of which is coaxially slidably disposed on the outer cylinder two. The outer cylinder two and the inner cylinder two are respectively provided with pin holes at their outer ends.

[0013] Under the combined action of damper one and U-shaped linkage vibration damping device, the vertical shaking vibration of the reaming machine is suppressed. Its vibration reduction effect manifests in four aspects: First, damper one directly suppresses the vertical vibration of the reaming machine; second, the U-shaped linkage vibration damping device connects the header and the reaming machine, and the vibration of the reaming machine causes piston one to slide up and down along the U-shaped tube. The hydraulic oil in the U-shaped tube enters and exits the piston damping hole and the oil pipe damping hole, converting the kinetic energy of the reamer into the heat energy of the hydraulic oil and dissipating it. Third, the piston of the reamer generates friction when it moves up and down in the U-shaped tube, and the vibration kinetic energy of the reamer is dissipated through the friction of the piston. Fourth, since the U-shaped linkage vibration damping device connects the header and the reamer, the entire connection route is: chassis - damper 1 - reamer - U-shaped linkage vibration damping device - spring damping structure - header - chassis. The reamer is not only directly affected by damper 1 and the U-shaped linkage vibration damping device, but also indirectly affected by the spring damping structure of the header, thereby enhancing the vibration damping effect on the reamer.

[0014] The superior technical effects of this invention are as follows: (1) A spring damping structure is provided on the cutting table. Under the action of the helical spring and the second damper, the vibration of the cutting table is suppressed.

[0015] (2) A damper is installed on the reamer. Under the action of the second damper, the up-and-down shaking vibration of the reamer is suppressed.

[0016] (3) The U-shaped linkage vibration damping device is fixed on the chassis by a bracket and connects the header and the reamer, realizing the linkage between the reamer damper and the header damper. The connection route of the entire vibration damping system is: chassis - spring damping structure - header - U-shaped linkage vibration damping device - reamer - damper one - chassis. The header is not only directly affected by the spring damping structure and the U-shaped linkage vibration damping device, but also indirectly affected by the damper one of the reamer. At the same time, the friction of the piston rod in the U-shaped tube also consumes vibration kinetic energy. These aspects greatly increase the vibration damping effect. The same applies to the reamer. Attached Figure Description

[0017] Figure 1 This is the overall diagram of the present invention patent.

[0018] Figure 2 This is a diagram of the cutter head structure.

[0019] Figure 3This is a diagram of the vibration reduction structure for the cutting table.

[0020] Figure 4 This is a diagram of a spring-damped structure.

[0021] Figure 5 This is a structural diagram of the cutter damper.

[0022] Figure 6 This is a structural diagram of a helical spring.

[0023] Figure 7 This is a diagram of a U-shaped tube structure.

[0024] Figure 8 This is a diagram of the piston structure.

[0025] Figure 9 This is a diagram of the support structure.

[0026] Figure 10 This is a structural diagram of a U-shaped linkage device.

[0027] Figure 11 This is a structural diagram of the fuel tank.

[0028] Figure 12 This is a diagram of the vibration reduction structure of the U-shaped linkage device.

[0029] Figure 13 This is a structural diagram of a sizing machine.

[0030] Figure 14 This is a diagram of the vibration reduction structure of a field-returning machine.

[0031] Figure 15 This is a structural diagram of the damper of the sludge return machine.

[0032] Figure 16 This is a diagram showing the combined vibration reduction of a helical spring damper and a U-shaped linkage vibration reduction device.

[0033] In the diagram, 1-Cutter head, 2-Spring damping structure, 3-Chassis, 4-Damper one, 5-Rolling machine, 6-Hydraulic oil tank, 7-Piston one, 8-Connecting rod, 9-U-tube, 10-Bracket, 11-Piston two, 12-Cutter head lug, 13-Cylindrical hole, 14-Chassis lug, 15-Damper two, 16-Helical spring, 17-Cylindrical hole, 18-Lower support seat, 19-Inner cylinder one 20-Outer cylinder one, 21-Upper support seat, 22-Support plane, 23-Oil hole, 24-Connecting end, 25-Slot hole, 26-Piston damping hole, 27-Connecting plane, 28-Bracket hole, 29-Oil pipe, 30-Oil pipe damping hole, 31-Oil tank, 32-Cylindrical pin one, 33-Returning machine lug, 34-Cylindrical pin two, 35-Pin hole, 36-Inner cylinder two, 37-Outer cylinder two Detailed Implementation

[0034] This type of vibration-damping corn harvester mainly includes a header 1 for harvesting corn, a stalk-returning machine 5 for crushing corn stalks and returning them to the field, a spring-damping structure 2, and U-shaped linkage vibration damping devices 6, 7, 9, and 11. The header 1 is connected to the chassis 3 via the spring-damping structure 2, which dampens the header 1. The stalk-returning machine 5 is connected to the chassis 3 via a damper 4, which also dampens the stalk-returning machine 5. The U-shaped linkage vibration damping device is fixed on the chassis 3 by the bracket 10 and connects the header 1 and the reamer 5. The connection route of the entire vibration damping system is: chassis 3 - spring damping structure 2 - header 1 - U-shaped linkage vibration damping devices 6, 7, 9, 11 - reamer 5 - damper 4 - chassis 3. The header 1 is not only directly affected by the spring damping structure 2 and the U-shaped linkage vibration damping devices 6, 7, 9, 11, but also indirectly affected by the damper 4 of the reamer. The same applies to the reamer, thus enhancing the vibration damping effect.

[0035] The lower side of the cutting platform 1 is provided with two pairs of lugs 12, which are used to connect the spring damping structure 2. The spring damping structure 2 is also connected to the chassis 3. The spring damping structure 2 includes a helical spring 16 and a damper 15. The two ends of the spring damping structure 2 are connected to the cutting platform 1 and the chassis 3, respectively. The upper side of the cutting platform 1 is provided with a pair of lugs, which are used to connect the piston 11 of the U-shaped linkage vibration damping devices 6, 7, 9, and 11. Under the combined action of the spring damping structure 2 and the U-shaped linkage vibration damping devices, the cutting platform 1 achieves the effect of vibration reduction.

[0036] The damper 15 includes an outer cylinder 20, an inner cylinder 19 coaxially slidably disposed within the outer cylinder 20, a lower support 18 coaxially sleeved on the outside of the inner cylinder 19, and an upper support 21 coaxially sleeved on the bottom of the outer cylinder 20. The free end of the inner cylinder 19 has a cylindrical hole 17, and one end of the outer cylinder 20 has a cylindrical hole 2. When the inner cylinder 19 moves relative to the outer cylinder 20, the hydraulic oil inside the damper cylinder is repeatedly compressed, generating heat. The energy absorbed by the spring is dissipated through heat, thus achieving a vibration reduction effect. The cylindrical holes 17 and 2 are respectively connected to lugs 12 on the cutting table 1. A helical spring 16 is sleeved between the lower support 18 and the upper support 21, and on the outer cylinder. The two end faces of the helical spring 16 are respectively provided with spring support planes 22 for mounting on the outer cylinder. When the cutting table vibrates up and down, the spring 16 extends or compresses, storing energy and thus providing a buffering effect.

[0037] The U-shaped linkage vibration damping device 6, 7, 9, 11 includes a U-shaped tube 9, piston 7, piston 11, and hydraulic oil tank 6. The U-shaped tube 9 is hollow and filled with hydraulic oil. One end of the U-shaped tube 9 is connected to piston 7, and the other end is connected to piston 11. The middle of the U-shaped tube 9 is connected and fixed to the chassis 3 by a bracket 10. One end of the bracket 10 is connected to the U-shaped tube 9, and the other end is welded to the chassis 3, serving to fix the U-shaped tube 9. The U-shaped tube 9 is provided with an oil hole 23, through which hydraulic oil can enter and exit the U-shaped tube 9 when piston 7 and piston 11 move.

[0038] Piston 7 and piston 11 are hollow cylindrical tubes that can store hydraulic oil. A damping hole 26 is opened at the end of each cylindrical tube, allowing hydraulic oil to enter and exit. A slot 25 is opened in the wall of piston 11, enabling communication between the inside and outside of the tube. The slot 25 connects to the oil hole 23 of the U-shaped tube 9, allowing hydraulic oil to enter through the piston damping hole 26, pass through the slot 25, and flow through the oil hole 23 of the U-shaped tube 9 to enter and exit the hydraulic oil tank 6.

[0039] The hydraulic oil tank 6 includes a tank body 31 and an oil pipe 29. The tank body 31 stores hydraulic oil, and the oil pipe 29 connects to the oil hole 23 of the U-shaped tube 9. A damping hole 30 is provided at the end of the oil pipe 29, which converts the kinetic energy of the hydraulic oil into heat energy for dissipation. The hydraulic oil enters and exits the tank through the tank body 31, the oil pipe 29, the oil hole 23 of the U-shaped tube 9, the slot 25, and the piston damping hole 26.

[0040] The upper end of the reamer 5 is provided with five pairs of lugs 33. Two pairs of lugs are connected to the chassis 3 via connecting rods 8, and the other two pairs of lugs 8 are connected to the chassis 3 via dampers 4. The remaining pair of lugs is used to connect the pistons 7 of the U-shaped linkage damping devices 6, 7, 9, and 11.

[0041] When the trowel 5 vibrates up and down, the inner cylinder 36 and outer cylinder 37 of the damper 4 move relative to each other, and the hydraulic oil inside the cylinder is repeatedly squeezed. The vibration energy of the trowel 5 is dissipated as heat from the damper, thus achieving the effect of vibration reduction. Under the combined action of the damper 4 and the U-shaped linkage vibration reduction devices 6, 7, 9, and 11, the trowel 5 achieves the effect of vibration reduction.

[0042] The damper 4 includes an outer cylinder 37 and an inner cylinder 36 that is slidably mounted on the outer cylinder 37 at one end. The outer ends of the outer cylinder 37 and the inner cylinder 36 are respectively provided with pin holes 35 for connecting the damper 4 and the piston 7.

[0043] The specific working process of this invention is as follows: The working process of vibration reduction of the cutting table, such as Figure 16As shown: Under the combined action of the spring damping structure 2 and the U-shaped linkage vibration damping devices 6, 7, 9, and 11, the vertical vibration of the header 1 is greatly reduced. The vibration damping effect is manifested in four aspects: First, the spring damping structure 2 includes a helical spring 16 and a second damper 15. The helical spring 16 can buffer the vibration of the header 1, and the second damper 15 can absorb and dissipate the vibrational kinetic energy of the header 1. Second, the U-shaped linkage vibration damping devices 6, 7, 9, and 11 connect the header 1 and the rotary drum 5. The rotary drum 5 is connected to the first damper 4. The vibration of the header 1 causes the second piston 11 to slide up and down along the U-shaped tube. Hydraulic oil enters and exits the piston damping hole 26 and the oil pipe damping hole 30 through the U-shaped tube 9, converting the kinetic energy of the header 1 into the heat energy of the hydraulic oil and dissipating it; third, the piston 11 of the header generates friction when it moves up and down in the U-shaped tube 9, and the vibration kinetic energy of the header is dissipated through the friction of the piston; fourth, since the U-shaped linkage vibration damping devices 6, 7, 9, and 11 connect the header 1 and the reamer 5, the entire connection route is: chassis 3 - spring damping structure 2 - header 1 - U-shaped linkage vibration damping device 6 The cutting platform 1 is directly affected by the spring damping structure 2 and the U-shaped linkage vibration damping device 6, 7, 9, 11. When the vibration frequency of the cutting platform 1 is high, the hydraulic oil in the U-shaped pipe 9 cannot quickly pass through the damping hole. At this time, the entire U-shaped linkage vibration damping device is approximately a rigid structure, which results in the rigid connection between the cutting platform 1 and the cutting platform 5. The cutting platform is also suppressed by the damper 4, thus enhancing the vibration damping effect. Under the influence of these four aspects, the vibration damping effect of the cutting platform is greatly improved.

[0044] The working process of vibration reduction in a sizing machine, such as Figure 16As shown: Under the combined action of damper 4 and U-shaped linkage vibration damping devices 6, 7, 9, and 11, the up-and-down shaking vibration of the reamer 5 is suppressed. Its vibration damping effect manifests in four aspects: First, when the reamer 5 vibrates up and down, the inner cylinder 36 and outer cylinder 37 of damper 4 move relative to each other, and the hydraulic oil inside the cylinders is repeatedly squeezed. The vibration energy of the reamer is dissipated as heat from the damper, thus achieving a vibration damping effect. Second, the U-shaped linkage vibration damping devices 6, 7, 9, and 11 connect the header 1 and the reamer 5. The vibration of the reamer 5 causes piston 7 to slide up and down along the U-shaped tube 9. The hydraulic oil in the U-shaped tube 9 enters and exits the piston damping hole 26 and the oil pipe damping hole 30, converting the vibration kinetic energy of the reamer into the heat energy of the hydraulic oil, which is then dissipated. Third, the reamer's dynamic... When piston 7 moves up and down in the U-shaped tube 9, friction is generated, and the vibration kinetic energy of the reamer is dissipated through the friction of piston 7. Fourth, since the U-shaped linkage damping device 6, 7, 9, 11 connects the header 1 and the reamer 5, the entire connection route is: chassis 3 - damper 4 - reamer 5 - U-shaped linkage damping device 6, 7, 9, 11 - spring damping structure 2 - header 1 - chassis 3. The reamer 5 is not only directly affected by damper 4 and the U-shaped linkage damping device, but when the vibration frequency of the reamer is high, the hydraulic oil in the U-shaped tube 9 cannot pass through the damping hole. At this time, the entire U-shaped linkage damping device is approximately a rigid structure, which results in the reamer 1 and the header 5 being rigidly connected together. The reamer is also subject to the inhibitory effect of the spring damping structure 2, thereby enhancing the vibration reduction effect. Under the influence of these four aspects, the vibration reduction effect of the reamer is greatly improved.

[0045] In summary, under the combined action of spring damping structure 2, damper 4, and U-shaped linkage vibration reduction devices 6, 7, 9, and 11, the vertical vibration generated by the header 1 and the reamer 5 is greatly reduced, thus achieving the effect of vibration reduction. This ensures the stable operation of the corn harvester and increases the service life of the machine.

Claims

1. A vibration-damping corn harvester, mainly comprising a header (1) for harvesting corn, a stalk-returning machine (5) for crushing corn stalks and returning them to the field, a spring-damping structure (2), and a U-shaped linkage vibration damping device (6, 7, 9, 11); the header (1) is connected to the chassis (3) via the spring-damping structure (2); the stalk-returning machine (5) is connected to the chassis (3) via a damper (4); the U-shaped linkage vibration damping device is fixed to the chassis (3) via a bracket (10) and connects the header (1) and the stalk-returning machine (5); The lower side of the cutting platform (1) is provided with two pairs of lugs (12), which are used to connect the spring damping structure (2) respectively. The spring damping structure (2) is also connected to the chassis (3). The spring damping structure (2) includes a helical spring (16) and a damper (15). The two ends of the spring damping structure (2) are connected to the cutting platform (1) and the chassis (3) respectively. The upper side of the cutting platform (1) is provided with a pair of lugs, which are used to connect the piston (11) of the U-shaped linkage vibration damping device (6, 7, 9, 11). The second damper (15) includes an outer cylinder (20), an inner cylinder (19) with one end slidably disposed in the outer cylinder (20), a lower support seat (18) coaxially sleeved on the outside of the inner cylinder (19), and an upper support seat (21) coaxially sleeved on the bottom end of the outer cylinder (20). One end of the inner cylinder (19) is provided with a cylindrical hole (17), and the other end of the outer cylinder (20) is also provided with a cylindrical hole. The U-shaped linkage vibration damping device (6, 7, 9, 11) includes a U-shaped tube (9), piston one (7), piston two (11), and hydraulic oil tank (6); the U-shaped tube (9) is hollow and filled with hydraulic oil; one end of the U-shaped tube (9) is connected to piston one (7), and the other end is connected to piston two (11); the middle of the U-shaped tube (9) is connected and fixed to the chassis (3) by a bracket (10); one end of the bracket (10) is connected to the U-shaped tube (9), and the other end is welded to the chassis (3); the U-shaped tube (9) is provided with an oil hole (23).

2. The vibration-damping corn harvester according to claim 1, characterized in that, The cylindrical hole (17) is connected to the lug (12) on the cutting table (1). A helical spring (16) is provided between the lower support seat (18) and the upper support seat (21) and on the outer cylinder. The two end faces of the helical spring (16) are respectively provided with spring support planes (22).

3. The vibration-damping corn harvester according to claim 1, characterized in that, The piston one (7) and piston two (11) are hollow cylindrical tubes with damping holes (26) at the ends of the cylindrical tubes; the cylinder wall of the piston two (11) has a slot (25) which is connected to the oil hole (23) of the U-shaped tube (9).

4. The vibration-damping corn harvester according to claim 1, characterized in that, The hydraulic oil tank (6) includes a tank body (31) and an oil pipe (29). The tank body (31) stores hydraulic oil. The oil pipe (29) is connected to the oil hole (23) of the U-shaped pipe (9). The end of the oil pipe (29) has a damping hole (30).

5. The vibration-damping corn harvester according to claim 1, characterized in that, The upper end of the returning machine (5) is provided with five pairs of lugs (33), two pairs of lugs are connected to the chassis (3) through connecting rods (8), the other two pairs of lugs (8) are connected to the chassis (3) through damper one (4), and the remaining pair of lugs is used to connect the piston one (7) of the U-shaped linkage damping device (6, 7, 9, 11).

6. The vibration-damping corn harvester according to claim 1, characterized in that, The damper (4) includes an outer cylinder (37) and an inner cylinder (36) that is slidably mounted on the outer cylinder (37) at one end. The outer cylinder (37) and the inner cylinder (36) are respectively provided with pin holes (35) at their outer ends.

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