A kind of unloading transmission device based on dry safety clutch

Abstract

The utility model relates to a kind of unloading transmission based on dry safety clutch, belong to harvester field.It includes: dry clutch assembly, first transmission mechanism, second transmission mechanism, auger transmission mechanism and unloading port;The dry clutch assembly with the first transmission mechanism and the second transmission mechanism transmission connection, and make the first transmission mechanism with the second transmission mechanism transmission connection or disconnect, the second transmission mechanism with the auger transmission mechanism one end transmission connection, the other end of the auger transmission mechanism with the unloading port fixed connection.The utility model is favorable to avoid the problem such as belt linkage, skidding, damage caused by frequent tensioning or loosening belt.

Description

Technical Field

[0001] This utility model relates to the field of harvesters, and in particular to a grain unloading transmission device based on a dry safety clutch. Background Technology

[0002] Currently, the engagement and disengagement of the unloading transmission mechanism in harvesters are mainly achieved by adjusting the position of the tension wheel. The tension wheel is driven primarily by two methods: hydraulic cylinder control and mechanical cable control. For hydraulic cylinder control: when the cylinder extends, the tension wheel presses the belt, the unloading transmission mechanism operates, and unloading begins; when the cylinder retracts, the tension wheel releases the belt, the unloading transmission mechanism stops operating, and unloading ends. For mechanical cable control: when the cable handle is pulled up, the tension wheel presses the belt, the unloading transmission mechanism operates, and unloading begins; when the cable handle is released, the tension wheel returns to its original position under spring pressure, the unloading transmission mechanism stops operating, and unloading ends.

[0003] Whether controlled by hydraulic cylinders or mechanical cable pull, the belt needs to be frequently tensioned or loosened. If the belt is too short, the belt and pulley may not separate completely when the belt is loosened, resulting in linkage. If the belt is too long, the belt and pulley may not be effectively tensioned when the belt is tightened, resulting in slippage and ineffective power transmission. In addition, frequent tensioning or loosening of the belt can also increase the risk of damage to the transmission system and increase maintenance costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a grain unloading transmission device based on a dry safety clutch to solve the above-mentioned problem.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A grain unloading transmission device based on a dry safety clutch includes: a dry clutch assembly, a first transmission mechanism, a second transmission mechanism, an auger transmission mechanism, and a grain unloading port; the dry clutch assembly is connected to the first transmission mechanism and the second transmission mechanism, and the first transmission mechanism is connected to or disconnected from the second transmission mechanism; the second transmission mechanism is connected to one end of the auger transmission mechanism, and the other end of the auger transmission mechanism is fixedly connected to the grain unloading port.

[0006] The beneficial effects of this utility model are as follows: the dry clutch assembly is connected to the first transmission mechanism and the second transmission mechanism, which is conducive to controlling the on and off of power transmission from the first transmission mechanism to the second transmission mechanism through the dry clutch assembly. This avoids the need to set up a transmission structure with a tensioning wheel, belt, and pulley between the first and second transmission mechanisms, thereby avoiding problems such as belt linkage, slippage, and damage caused by frequent tensioning or loosening of the belt. The auger transmission mechanism, in conjunction with the unloading port, is conducive to realizing the transfer of grain by using the power transmitted sequentially by the first transmission mechanism, the dry clutch assembly, and the second transmission mechanism.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the dry clutch assembly includes: a pulley, a flange hub, a flange shaft, multiple pistons, a friction plate assembly, an outer pressure plate, an inner pressure plate, a clutch housing, and multiple return components; the clutch housing is a shell structure with one open end, one end of the flange shaft is axially fixedly installed in the middle of the inner wall of the clutch housing, the flange hub is rotatably sleeved on the flange shaft, the friction plate assembly is sleeved on the flange hub, its inner wall is connected to the outer wall of the flange hub through a spline, the outer pressure plate is fixedly installed at one end of the clutch housing, the flange hub and the flange shaft pass through the outer pressure plate, the inner pressure plate is slidably disposed in the clutch housing, and the two sides of the friction plate assembly correspond one-to-one. The clutch housing has multiple pistons that are spaced apart and fixedly mounted on the inner wall of the clutch housing, with their output shafts abutting against the inner pressure plate. The other end of the flange shaft has an oil port communicating with the pistons, used to input external hydraulic oil to the pistons to drive the inner pressure plate to press against the friction plate assembly and the outer pressure plate. The pulley is fixedly connected to the flange hub and sleeved on one end of the clutch housing. The pulley is drively connected to the first transmission mechanism. Multiple return components are circumferentially spaced and mounted on the other side wall of the clutch housing, and fixedly connected to the inner pressure plate. The other side wall of the clutch housing is drively connected to the second transmission mechanism.

[0009] The beneficial effects of adopting the above-mentioned further solution are: the oil port facilitates the input of external hydraulic oil into the piston, which drives the inner pressure plate to press against the friction plate assembly and the outer pressure plate under the action of oil pressure; the pulley is connected to the first transmission mechanism, which facilitates the use of the power of the first transmission mechanism to drive the pulley and the flange hub fixedly connected to it to rotate, thereby using the spline connection between the flange hub and the friction plate assembly to drive the friction plate assembly to rotate, and then using the friction force between the friction plate assembly and the outer pressure plate to drive the outer pressure plate, the clutch housing and the second transmission mechanism to rotate, thus completing the transmission between the first transmission mechanism and the second transmission mechanism.

[0010] Furthermore, the return assembly includes: a connecting bolt, a baffle, a sleeve, and a return spring; the connecting bolt passes through the other side wall of the clutch housing, with one end fixedly connected to the inner pressure plate; the sleeve is fitted onto the connecting bolt and passes through the other side wall of the clutch housing; one end of the sleeve is fixedly connected to the baffle, and the other end abuts against or separates from the inner pressure plate; the other end of the connecting bolt is fixedly connected to the baffle; and the return spring is fitted onto the sleeve, with both ends corresponding to abut against the baffle and the other side wall of the clutch housing.

[0011] The beneficial effects of adopting the above-mentioned further solution are: during the process of the inner pressure plate pressing the friction plate assembly and the outer pressure plate, it is beneficial to drive the connecting bolt to move synchronously with the inner pressure plate, thereby compressing the baffle return spring. The return spring is beneficial to use the rebound force to restore the inner pressure plate to its original position when the external input oil pressure is disconnected, thereby canceling the contact between the inner pressure plate and the friction plate assembly and the outer pressure plate, and thus interrupting the power transmission between the first transmission mechanism and the second transmission mechanism.

[0012] Furthermore, a drive shaft mounting hole is provided in the middle of the other side wall of the clutch housing, and the drive shaft mounting hole is fixedly connected to the second transmission mechanism.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that it facilitates the transmission of power to the second transmission mechanism when the clutch housing rotates, thereby realizing the transmission of power between the first transmission mechanism and the second transmission mechanism.

[0014] Furthermore, the second transmission mechanism includes: a clutch power output assembly, a gearbox drive assembly, and a horizontal auger drive assembly, wherein the dry clutch assembly, the clutch power output assembly, the gearbox drive assembly, the horizontal auger drive assembly, and the auger transmission mechanism are sequentially connected in a transmission manner.

[0015] The beneficial effect of adopting the above-mentioned further solution is that it facilitates the operation of the auger transmission mechanism when transmitting power in the dry clutch assembly, thereby realizing the transfer of grain.

[0016] Furthermore, the clutch power output assembly includes a fixed bracket and a drive shaft. The fixed bracket is fixedly installed, and the drive shaft is rotatably mounted on the fixed bracket, with its two ends corresponding to and fixedly connected to the dry clutch assembly and the gearbox drive assembly.

[0017] The beneficial effects of adopting the above-mentioned further solution are: the fixed bracket helps to provide support for the rotation of the drive shaft, and the drive shaft helps to transmit the power of the clutch housing rotation to the second transmission mechanism.

[0018] Furthermore, the gearbox drive assembly includes: a gearbox drive sprocket, a first chain, a gearbox driven sprocket, and a first chain tensioner; the gearbox drive sprocket is fixedly sleeved on one end of the drive shaft, the gearbox drive sprocket and the gearbox driven sprocket are connected by the first chain, and the first chain tensioner is rotatably connected to the first chain and tensions the first chain.

[0019] The beneficial effects of adopting the above-mentioned further solution are: the gearbox drive sprocket, the first chain and the gearbox driven sprocket are conducive to transmitting the power of the drive shaft to the horizontal auger drive assembly; the first chain tensioning wheel is conducive to keeping the position fixed during the tensioning of the first chain, avoiding problems such as linkage, slippage and damage caused by frequent tensioning or loosening of the chain.

[0020] Furthermore, the horizontal auger drive assembly includes: a horizontal auger drive sprocket, a second chain, a horizontal auger driven sprocket, and a second chain tensioner; the horizontal auger drive sprocket and the gearbox driven sprocket are coaxially arranged, and the horizontal auger drive sprocket and the horizontal auger driven sprocket are connected by the second chain drive; the second chain tensioner is rotatably connected to the second chain and tensions the second chain; the horizontal auger driven sprocket is fixedly connected to the auger drive mechanism.

[0021] The beneficial effects of adopting the above-mentioned further solution are: the horizontal auger drive sprocket, the second chain, and the horizontal auger driven sprocket are conducive to transmitting the power from the gearbox drive assembly to the auger transmission mechanism; the second chain tensioning wheel is conducive to keeping the position fixed during the tensioning of the second chain, avoiding problems such as linkage, slippage, and damage caused by frequent tensioning or loosening of the chain.

[0022] Furthermore, the first transmission mechanism includes: a power output pulley, a grain unloading belt, and a belt tensioner; the power output pulley and the dry clutch assembly are connected via the grain unloading belt, and the belt tensioner is rotatably connected to the grain unloading belt and tensions the grain unloading belt.

[0023] The beneficial effects of adopting the above-mentioned further solutions are: the power output pulley and the unloading belt facilitate the transmission of the power output by the harvester to the dry clutch assembly, and the belt tensioner helps to keep the position fixed during the tensioning of the unloading belt, avoiding problems such as belt linkage, slippage, and damage caused by frequent tensioning or loosening of the belt.

[0024] Furthermore, the auger transmission mechanism includes: a horizontal auger, a vertical auger, a bend gear box, and a grain unloading auger; one end of the horizontal auger is fixedly connected to the second transmission mechanism, the bottom end of the vertical auger is located close to the horizontal auger, its top end is fixedly connected to one side of the bend gear box, one end of the grain unloading auger is fixedly connected to the other side of the bend gear box, and its other end is fixedly connected to the grain unloading port.

[0025] The beneficial effect of adopting the above-mentioned further scheme is that it facilitates the transfer of grain through augers with different settings, and finally discharges the grain from the unloading port. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure transmission provided for an embodiment of this utility model; Figure 2 A schematic diagram of the transmission between the dry clutch assembly, the first transmission mechanism, and the second transmission mechanism provided in an embodiment of this utility model; Figure 3 A side view of the transmission between the clutch power output assembly and the dry clutch assembly provided in an embodiment of this utility model; Figure 4 A cross-sectional view of a dry clutch assembly provided in an embodiment of this utility model.

[0027] The attached diagram lists the components represented by each number as follows: 1. Dry clutch assembly; 2. First transmission mechanism; 3. Second transmission mechanism; 4. Screw drive mechanism; 5. Grain unloading port; 11. Pulley; 12. Flange hub; 13. Flange shaft; 14. Piston; 15. Friction plate assembly; 16. Outer pressure plate; 17. Inner pressure plate; 18. Clutch housing; 19. Return assembly; 21. Power output pulley; 22. Grain unloading belt; 23. Belt tensioner; 31. Clutch power output assembly; 32. Gearbox drive assembly; 33. Horizontal screw drive assembly; 41. Horizontal screw; 42. Vertical auger; 43. Elbow gearbox; 44. Grain unloading auger; 131. Oil port; 181. Drive shaft mounting hole; 191. Connecting bolt; 192. Baffle; 193. Sleeve; 194. Return spring; 311. Fixed bracket; 312. Drive shaft; 321. Gearbox drive sprocket; 322. First chain; 323. Gearbox driven sprocket; 324. First chain tensioner; 331. Horizontal auger drive sprocket; 332. Second chain; 333. Horizontal auger driven sprocket; 334. Second chain tensioner. Detailed Implementation

[0028] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] like Figures 1 to 4 As shown, this embodiment provides a grain unloading transmission device based on a dry safety clutch, including: a dry clutch assembly 1, a first transmission mechanism 2, a second transmission mechanism 3, an auger transmission mechanism 4, and a grain unloading port 5; the dry clutch assembly 1 is connected to the first transmission mechanism 2 and the second transmission mechanism 3, and the first transmission mechanism 2 is connected to or disconnected from the second transmission mechanism 3; the second transmission mechanism 3 is connected to one end of the auger transmission mechanism 4, and the other end of the auger transmission mechanism 4 is fixedly connected to the grain unloading port 5.

[0030] The beneficial effects of this utility model are as follows: the dry clutch assembly is connected to the first transmission mechanism and the second transmission mechanism, which is conducive to controlling the on and off of power transmission from the first transmission mechanism to the second transmission mechanism through the dry clutch assembly. This avoids the need to set up a transmission structure with a tensioning wheel, belt, and pulley between the first and second transmission mechanisms, thereby avoiding problems such as belt linkage, slippage, and damage caused by frequent tensioning or loosening of the belt. The auger transmission mechanism, in conjunction with the unloading port, is conducive to realizing the transfer of grain by using the power transmitted sequentially by the first transmission mechanism, the dry clutch assembly, and the second transmission mechanism.

[0031] Preferred, such as Figure 4As shown, the dry clutch assembly 1 includes: a pulley 11, a flange hub 12, a flange shaft 13, multiple pistons 14, a friction plate assembly 15, an outer pressure plate 16, an inner pressure plate 17, a clutch housing 18, and multiple return assemblies 19. The clutch housing 18 is a shell structure with one end open. One end of the flange shaft 13 is axially fixedly installed in the middle of the inner wall of the clutch housing 18. The flange hub 12 is rotatably sleeved on the flange shaft 13. The friction plate assembly 15 is sleeved on the flange hub 12, and its inner wall is connected to the outer wall of the flange hub 12 through a spline. The outer pressure plate 16 is fixedly installed at one end of the clutch housing 18. The flange hub 12 and the flange shaft 13 pass through the outer pressure plate 16. The inner pressure plate 17 is slidably disposed inside the clutch housing 18. The friction plate assembly 15 has two sides... Each piston 14 is spaced apart and fixedly mounted on the inner wall of the clutch housing 18, with its output shaft abutting against the inner pressure plate 17. The other end of the flange shaft 13 is provided with an oil port 131 communicating with the piston 14, for inputting external hydraulic oil to the piston 14 to drive the inner pressure plate 17 to press the friction plate assembly 15 and the outer pressure plate 16. The pulley 11 is fixedly connected to the flange hub 12 and sleeved on one end of the clutch housing 18. The pulley 11 is drivenly connected to the first transmission mechanism 2. Multiple return components 19 are circumferentially spaced and mounted on the other side wall of the clutch housing 18 and fixedly connected to the inner pressure plate 17. The other side wall of the clutch housing 18 is drivenly connected to the second transmission mechanism 3.

[0032] It should be noted that in this embodiment, the flange shaft 13 is fixedly installed on the harvester body, thereby providing support for the operation of the dry clutch assembly 1. The flange hub 12 is rotatably mounted on the flange shaft 13 via multiple deep groove ball bearings; The inner wall of the friction plate assembly 15 is connected to the outer wall of the flange hub 12 via a spline. Under the action of axial driving force, the friction plate assembly 15 can generate axial relative displacement with the flange hub 12. However, in other embodiments of this utility model, the friction plate assembly 15 is fixedly sleeved on the flange hub 12, and the axial displacement changes are achieved through the elastic deformation of the friction plate assembly 15 itself.

[0033] The advantages of adopting the above-mentioned preferred solution are: the oil port facilitates the input of external hydraulic oil into the piston, which drives the inner pressure plate to press against the friction plate assembly and the outer pressure plate under the action of oil pressure; the pulley is connected to the first transmission mechanism, which facilitates the use of the power of the first transmission mechanism to drive the pulley and the flange hub fixedly connected to it to rotate, thereby using the spline connection between the flange hub and the friction plate assembly to drive the friction plate assembly to rotate, and then using the friction force between the friction plate assembly and the outer pressure plate to drive the outer pressure plate, the clutch housing and the second transmission mechanism to rotate, thus completing the transmission between the first transmission mechanism and the second transmission mechanism.

[0034] Preferred, such as Figure 4 As shown, the return assembly 19 includes: a connecting bolt 191, a baffle 192, a sleeve 193, and a return spring 194; the connecting bolt 191 passes through the other side wall of the clutch housing 18, and one end of it is fixedly connected to the inner pressure plate 17; the sleeve 193 is sleeved on the connecting bolt 191 and passes through the other side wall of the clutch housing 18; one end of the sleeve 193 is fixedly connected to the baffle 192, and the other end of it abuts against or separates from the inner pressure plate 17; the other end of the connecting bolt 191 is fixedly connected to the baffle 192; the return spring 194 is sleeved on the sleeve 193, and its two ends abut against the baffle 192 and the other side wall of the clutch housing 18 respectively.

[0035] The beneficial effects of adopting the above-mentioned preferred solution are: during the process of the inner pressure plate pressing the friction plate assembly and the outer pressure plate, it is beneficial to drive the connecting bolt to move synchronously with the inner pressure plate, thereby compressing the baffle return spring. The return spring is beneficial to use the rebound force to restore the inner pressure plate to its original position when the external input oil pressure is disconnected, thereby canceling the contact between the inner pressure plate and the friction plate assembly and the outer pressure plate, and thus interrupting the power transmission between the first transmission mechanism and the second transmission mechanism.

[0036] Preferred, such as Figure 4 As shown, the other end side wall of the clutch housing 18 is provided with a drive shaft mounting hole 181, which is fixedly connected to the second transmission mechanism 3.

[0037] The beneficial effect of adopting the above preferred scheme is that it facilitates the transmission of power to the second transmission mechanism when the clutch housing rotates, thereby realizing the transmission of power between the first transmission mechanism and the second transmission mechanism.

[0038] Preferred, such as Figures 1 to 3As shown, the second transmission mechanism 3 includes: a clutch power output assembly 31, a gearbox drive assembly 32, and a horizontal auger drive assembly 33. The dry clutch assembly 1, the clutch power output assembly 31, the gearbox drive assembly 32, the horizontal auger drive assembly 33, and the auger transmission mechanism 4 are sequentially connected in a transmission manner.

[0039] The advantages of adopting the above-mentioned preferred scheme are: it facilitates the operation of the auger transmission mechanism when the dry clutch assembly transmits power, thereby realizing the transfer of grain.

[0040] Preferred, such as Figure 3 As shown, the clutch power output assembly 31 includes a fixed bracket 311 and a drive shaft 312. The fixed bracket 311 is fixedly installed, and the drive shaft 312 is rotatably mounted on the fixed bracket 311. Its two ends are fixedly connected to the dry clutch assembly 1 and the gearbox drive assembly 32 respectively.

[0041] It should be noted that in this embodiment, the fixed bracket 311 is fixedly installed on the grain box of the harvester body; The other end of the drive shaft 312 is fixedly installed in the drive shaft mounting hole 181.

[0042] The advantages of adopting the above preferred solution are: the fixed bracket helps to provide support for the rotation of the drive shaft, and the drive shaft helps to transmit the power of the clutch housing rotation to the second transmission mechanism.

[0043] Preferred, such as Figure 2 and Figure 3 As shown, the gearbox drive assembly 32 includes: a gearbox drive sprocket 321, a first chain 322, a gearbox driven sprocket 323, and a first chain tensioner 324; the gearbox drive sprocket 321 is fixedly sleeved on one end of the drive shaft 312, the gearbox drive sprocket 321 and the gearbox driven sprocket 323 are connected by the first chain 322, and the first chain tensioner 324 is rotatably connected to the first chain 322 and tensions the first chain 322.

[0044] It should be noted that in this embodiment, the first chain tension wheel 324 is rotatably sleeved on one end of the first fixed shaft, and the other end of the first fixed shaft is fixedly installed on the harvester body.

[0045] The advantages of adopting the above preferred solution are: the gearbox drive sprocket, the first chain and the gearbox driven sprocket are conducive to transmitting the power of the drive shaft to the horizontal auger drive assembly; the first chain tensioning wheel is conducive to keeping the position fixed during the tensioning of the first chain, avoiding problems such as linkage, slippage and damage caused by frequent tensioning or loosening of the chain.

[0046] Preferred, such as Figure 2 As shown, the horizontal auger drive assembly 33 includes: a horizontal auger drive sprocket 331, a second chain 332, a horizontal auger driven sprocket 333, and a second chain tensioner 334; the horizontal auger drive sprocket 331 and the gearbox driven sprocket 323 are coaxially arranged, and the horizontal auger drive sprocket 331 and the horizontal auger driven sprocket 333 are connected by the second chain 332 for transmission; the second chain tensioner 334 is rotatably connected to the second chain 332 and tensions the second chain 332; the horizontal auger driven sprocket 333 is fixedly connected to the auger transmission mechanism 4.

[0047] It should be noted that in this embodiment, the horizontal auger drive sprocket 331 and the gearbox passive sprocket 323 are coaxial and rotatably sleeved on one end of the second fixed shaft, and the other end of the second fixed shaft is fixedly installed on the harvester body. The second chain tensioner 334 is rotatably sleeved on one end of the third fixed shaft, and the other end of the third fixed shaft is fixedly installed on the harvester body.

[0048] The advantages of adopting the above preferred solution are: the horizontal auger drive sprocket, the second chain, and the horizontal auger driven sprocket are conducive to transmitting the power from the gearbox drive assembly to the auger transmission mechanism; the second chain tensioning wheel is conducive to keeping the position fixed during the tensioning of the second chain, avoiding problems such as linkage, slippage, and damage caused by frequent tensioning or loosening of the chain.

[0049] Preferred, such as Figure 2 As shown, the first transmission mechanism 2 includes: a power output pulley 21, a grain unloading belt 22, and a belt tensioner 23; the power output pulley 21 and the dry clutch assembly 1 are connected by the grain unloading belt 22, and the belt tensioner 23 is rotatably connected to the grain unloading belt 22 and tensions the grain unloading belt 22.

[0050] It should be noted that in this embodiment, the power output pulley 21 is rotatably sleeved on one end of the fourth fixed shaft, and the other end of the fourth fixed shaft is fixedly installed on the harvester body; The belt tensioner 23 is rotatably sleeved on one end of the fifth fixed shaft, and the other end of the fifth fixed shaft is fixedly installed on the harvester body; The power output pulley 21 and the pulley 11 are connected by the unloading belt 22.

[0051] The advantages of adopting the above-mentioned preferred solution are: the power output pulley and the unloading belt facilitate the transmission of the power output by the harvester to the dry clutch assembly, and the belt tensioner helps to keep the position fixed during the tensioning of the unloading belt, avoiding problems such as belt linkage, slippage, and damage caused by frequent tensioning or loosening of the belt.

[0052] Preferred, such as Figure 1 As shown, the auger transmission mechanism 4 includes: a horizontal auger 41, a vertical auger 42, a bend gearbox 43, and a grain unloading auger 44; one end of the horizontal auger 41 is fixedly connected to the second transmission mechanism 3, the bottom end of the vertical auger 42 is located close to the horizontal auger 41, and its top end is fixedly connected to one side of the bend gearbox 43; one end of the grain unloading auger 44 is fixedly connected to the other side of the bend gearbox 43, and its other end is fixedly connected to the grain unloading port 5.

[0053] It should be noted that in this embodiment, the horizontal auger passive sprocket 333 is fixedly sleeved on one end of the horizontal auger 41. The rotation of the horizontal auger passive sprocket 333 drives the horizontal auger 41 to rotate, thereby realizing the transfer of grain. The rotation of the vertical auger 42 and the unloading auger 44 is driven by the power system on the harvester, so that the vertical auger 42 and the unloading auger 44 are rotatably mounted on the harvester; The vertical auger 42, the elbow gearbox 43, and the unloading auger 44 are all covered by an outer shell. "The other end of the unloading auger 44 is fixedly connected to the unloading port 5" actually means that the outer shell is fixedly connected to the unloading port 5, so that the grain output from the other end of the unloading auger 44 enters the unloading port 5 and is discharged from the unloading port 5.

[0054] The advantages of adopting the above-mentioned preferred scheme are: it facilitates the transfer of grain through augers with different settings, and finally discharges the grain from the unloading port.

[0055] The working process of this embodiment is described below: like Figures 1 to 4 As shown, when unloading is required, the harvester's controller controls the hydraulic system to inject hydraulic oil into the oil port 131, so that the hydraulic oil enters the piston 14. At this time, under the action of hydraulic thrust, the inner pressure plate 17 is pushed towards the friction plate assembly 15 until the inner pressure plate 17 presses the friction plate assembly 15. At this time, under the continuous action of hydraulic thrust, the friction plate assembly 15 is displaced towards the outer pressure plate 16 until the inner pressure plate 17, the friction plate assembly 15 and the outer pressure plate 16 are pressed together. During this process, the inner pressure plate 17 drives the connecting bolt 191, the baffle 192 and the sleeve 193 to move together, while the return spring 194 is pushed and compressed by the baffle 192. When the power in the first transmission mechanism 2 is transmitted to the pulley 11 in sequence through the power output pulley 21 and the unloading belt 22, the pulley 11 drives the flange hub 12, which is fixedly connected to it, to rotate synchronously. Since the flange hub 12 is rotatably connected to the flange shaft 13, the flange shaft 13 will not rotate with the flange hub 12. However, the friction plate assembly 15, which is connected to the flange hub 12 through the spline, will rotate with the flange hub 12. Under the action of the friction force between the friction plate assembly 15 and the outer pressure plate 16, the rotation of the friction plate assembly 15 will drive the outer pressure plate 16 and the clutch housing 18, which is fixedly connected to the outer pressure plate 16, to rotate synchronously. The clutch housing 18 will drive the transmission shaft 312 and the gearbox drive sprocket 321 to rotate synchronously, transmitting the power from the first transmission mechanism 2 to the second transmission mechanism 3. Power is transmitted sequentially through the transmission shaft 312, gearbox drive sprocket 321, first chain 322, gearbox driven sprocket 323, horizontal auger drive sprocket 331, second chain 332, and horizontal auger driven sprocket 333 in the second transmission mechanism 3 to the horizontal auger 41, driving the horizontal auger 41 to rotate, thereby realizing the transfer of grain. At the same time, the rotating vertical auger 42 and unloading auger 44 will have the grain displaced by the horizontal auger 41 reversed again until it is discharged from the unloading port 5.

[0056] When the unloading transmission needs to be canceled, the harvester's controller controls the hydraulic system to stop injecting hydraulic oil into the oil port 131. With the disappearance of the hydraulic thrust, the inner pressure plate 17, friction plate assembly 15, and outer pressure plate 16 are simultaneously displaced away from the friction plate assembly 15 by the return force of the return spring 194. This continues until the inner pressure plate 17 separates from the friction plate assembly 15. At this point, the friction between the friction plate assembly 15 and the outer pressure plate 16 is greatly reduced because they are no longer subjected to hydraulic thrust. The friction between them is so great that the friction plate assembly 15 cannot drive the rotation of the outer pressure plate 16. The power transmission is interrupted, and the power cannot be transmitted from the first transmission mechanism 2 to the second transmission mechanism 3.

[0057] This utility model is a grain unloading transmission device based on a dry safety clutch. It eliminates the traditional structure of hydraulic cylinder or mechanical cable control of tension wheel to achieve the engagement or disengagement of grain unloading mechanism and belt tension wheel. Instead, it adopts a dry safety clutch, which is convenient and reliable in hydraulic and electric control operation. The tension wheel adopts a long tensioning structure to keep the position fixed, avoiding belt linkage, slippage and damage caused by frequent tensioning and loosening of belt or chain, and reducing maintenance costs.

[0058] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A grain unloading transmission device based on a dry safety clutch, characterized in that, include: The dry clutch assembly (1), the first transmission mechanism (2), the second transmission mechanism (3), the auger transmission mechanism (4), and the unloading port (5) are connected in transmission to the first transmission mechanism (2) and the second transmission mechanism (3), and the first transmission mechanism (2) is connected to or disconnected from the second transmission mechanism (3). The second transmission mechanism (3) is connected in transmission to one end of the auger transmission mechanism (4), and the other end of the auger transmission mechanism (4) is fixedly connected to the unloading port (5).

2. The grain unloading transmission device based on a dry safety clutch according to claim 1, characterized in that, The dry clutch assembly (1) includes: pulley (11), flange hub (12), flange shaft (13), multiple pistons (14), friction plate assembly (15), outer pressure plate (16), inner pressure plate (17), clutch housing (18), and multiple return assemblies (19). The clutch housing (18) is a shell structure with one open end. One end of the flange shaft (13) is axially fixed in the middle of the inner wall of the clutch housing (18). The flange hub (12) is rotatably sleeved on the flange shaft (13). The friction plate assembly (15) is sleeved on the flange hub (12), and its inner wall is connected to the outer wall of the flange hub (12) through a spline. The outer pressure plate (16) is fixedly installed at one end of the clutch housing (18). The flange hub (12) and the flange shaft (13) pass through the outer pressure plate (16). The inner pressure plate (17) is slidably disposed in the clutch housing (18). The two sides of the friction plate assembly (15) correspond one-to-one with the inner pressure plate (17) and the outer pressure plate (16) to abut or separate. Multiple pistons (14) are spaced apart and fixed. The output shaft of the clutch housing (17) is installed on the inner wall of the clutch housing (18) and abuts against the inner pressure plate (17). The other end of the flange shaft (13) is provided with an oil port (131) communicating with the piston (14) for inputting external hydraulic oil to the piston (14) to drive the inner pressure plate (17) to press the friction plate assembly (15) and the outer pressure plate (16). The pulley (11) is fixedly connected to the flange hub (12) and sleeved on one end of the clutch housing (18). The pulley (11) is drivenly connected to the first transmission mechanism (2). A plurality of return components (19) are circumferentially spaced and installed on the other side wall of the clutch housing (18) and fixedly connected to the inner pressure plate (17). The other side wall of the clutch housing (18) is drivenly connected to the second transmission mechanism (3).

3. The grain unloading transmission device based on a dry safety clutch according to claim 2, characterized in that, The return assembly (19) includes: a connecting bolt (191), a baffle (192), a sleeve (193), and a return spring (194); the connecting bolt (191) passes through the other side wall of the clutch housing (18), and one end of it is fixedly connected to the inner pressure plate (17); the sleeve (193) is sleeved on the connecting bolt (191) and passes through the other side wall of the clutch housing (18); one end of the sleeve (193) is fixedly connected to the baffle (192), and the other end of it abuts or separates from the inner pressure plate (17); the other end of the connecting bolt (191) is fixedly connected to the baffle (192); the return spring (194) is sleeved on the sleeve (193), and its two ends abut against the baffle (192) and the other side wall of the clutch housing (18) respectively.

4. The grain unloading transmission device based on a dry safety clutch according to claim 2, characterized in that, The clutch housing (18) has a drive shaft mounting hole (181) in the middle of the other side wall, and the drive shaft mounting hole (181) is fixedly connected to the second transmission mechanism (3).

5. The grain unloading transmission device based on a dry safety clutch according to any one of claims 1-4, characterized in that, The second transmission mechanism (3) includes: a clutch power output assembly (31), a gearbox drive assembly (32), and a horizontal auger drive assembly (33). The dry clutch assembly (1), the clutch power output assembly (31), the gearbox drive assembly (32), the horizontal auger drive assembly (33), and the auger transmission mechanism (4) are sequentially connected in transmission.

6. The grain unloading transmission device based on a dry safety clutch according to claim 5, characterized in that, The clutch power output assembly (31) includes a fixed bracket (311) and a drive shaft (312). The fixed bracket (311) is fixedly installed, and the drive shaft (312) is rotatably mounted on the fixed bracket (311). Its two ends are fixedly connected to the dry clutch assembly (1) and the gearbox drive assembly (32) respectively.

7. The grain unloading transmission device based on a dry safety clutch according to claim 6, characterized in that, The gearbox drive assembly (32) includes: a gearbox drive sprocket (321), a first chain (322), a gearbox driven sprocket (323), and a first chain tensioner (324); the gearbox drive sprocket (321) is fixedly sleeved on one end of the drive shaft (312), the gearbox drive sprocket (321) and the gearbox driven sprocket (323) are connected by the first chain (322), and the first chain tensioner (324) is rotatably connected to the first chain (322) and tensions the first chain (322).

8. The grain unloading transmission device based on a dry safety clutch according to claim 7, characterized in that, The horizontal auger drive assembly (33) includes: a horizontal auger drive sprocket (331), a second chain (332), a horizontal auger driven sprocket (333), and a second chain tensioner (334); the horizontal auger drive sprocket (331) and the gearbox driven sprocket (323) are coaxially arranged, and the horizontal auger drive sprocket (331) and the horizontal auger driven sprocket (333) are connected by the second chain (332) for transmission. The second chain tensioner (334) is rotatably connected to the second chain (332) and tensions the second chain (332). The horizontal auger driven sprocket (333) is fixedly connected to the auger transmission mechanism (4).

9. The grain unloading transmission device based on a dry safety clutch according to any one of claims 1-4, characterized in that, The first transmission mechanism (2) includes: a power output pulley (21), a grain unloading belt (22) and a belt tensioner (23); the power output pulley (21) and the dry clutch assembly (1) are connected by the grain unloading belt (22), and the belt tensioner (23) is rotatably connected to the grain unloading belt (22) and tensions the grain unloading belt (22).

10. The grain unloading transmission device based on a dry safety clutch according to any one of claims 1-4, characterized in that, The auger transmission mechanism (4) includes: a horizontal auger (41), a vertical auger (42), a bend gearbox (43), and a grain unloading auger (44); one end of the horizontal auger (41) is fixedly connected to the second transmission mechanism (3), the bottom end of the vertical auger (42) is located close to the horizontal auger (41), and its top end is fixedly connected to one side of the bend gearbox (43); one end of the grain unloading auger (44) is fixedly connected to the other side of the bend gearbox (43), and its other end is fixedly connected to the grain unloading port (5).

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