A corn header flail angle box power separation device

Abstract

The utility model relates to a corn header flail box angle box power separation device belongs to agricultural machinery technical field. Technical scheme is: the lateral wall of transmission case body is equipped with flail separation axle, the outer end of flail separation axle is equipped with flail separation handle, the inner end of flail separation axle is connected with one end of flail separation board, the other end of flail separation board is equipped with the dowel screw as the pawl, and the end of dowel screw is located in the annular groove on spline sleeve one. The utility model has the beneficial effects that: through the cooperation of flail separation board and the annular groove on spline sleeve, realize the accurate separation of power transmission between transfer case and transmission case, do not need to disassemble transmission case body, and it is convenient to carry out overhaul, utilize the double holes on the locating plate to ensure the safe locking of separation state, the compression spring simplifies the re-engagement process of power, improves the operation efficiency and safety of equipment. Simple operation, separation state locking is reliable, and the spring auxiliary reset makes the combination process labor-saving, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to a power separation device for the slinger box of a corn header, belonging to the field of agricultural machinery technology. Background Technology

[0002] In shredding equipment, the swivel cutter is mainly used to cut fibrous materials such as crop stalks. The swivel cutter typically uses serrated blades, mounted on the auger blades or drive shaft, and achieves its shredding function through high-speed rotation. The swivel cutter generates relative motion with the material through high-speed rotation, utilizing the cooperation of the moving blade and the fixed blade (or auger) to cut the stalks and other materials into smaller fragments. The swivel cutter device is the core working component of a swivel-type corn header. Its core function is to cut tall crops using high-speed rotating blades. For example, Chinese patent CN 202421093390.7 is titled "A Corn Harvester Header Transmission Structure and Corn Harvester." Compared with traditional reciprocating headers, swivel-type headers have advantages such as strong adaptability, good shredding effect, and high throughput, and are especially suitable for harvesting high-yield, high-moisture, or lodged crops. Currently, most existing blade-spinning devices employ distributed, independent transmission boxes. Each blade's cutter shaft is equipped with an independent angle box, whose output shaft is connected to the end of the blade's cutter shaft. The transfer case is connected to the angle box via the transmission box, and the angle box transmits power to the blade's cutter shaft through a bevel gear set, driving the blade to rotate. A problem with existing technology is that during maintenance of the angle box or replacement of the blade's cutter shaft bearings, the power transmission between the transfer case and the angle box requires disassembling the transmission box and disconnecting the power before maintenance. Due to limited working space, disassembling the transmission box is extremely difficult, resulting in inconvenient maintenance and reduced work efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a power separation device for the splitter box of a corn header. Through the engagement of the splitter separation plate and the annular groove on the spline sleeve, precise separation of power transmission between the splitter box and the transmission box is achieved without disassembling the transmission box, facilitating maintenance. The double holes on the positioning plate ensure a secure locking of the separated state. The compression spring simplifies the re-engagement process, improving the operating efficiency and safety of the equipment. It is easy to operate, reliably locks the separated state, and uses spring-assisted reset to reduce effort during re-engagement, thus improving work efficiency and solving the aforementioned technical problems of existing technologies.

[0004] The technical solution of this utility model is: a power separation device for a corn header blade angle box, comprising a transfer case, a transmission housing, an angle box, and a blade. The output shaft end of the transfer case is splinedly engaged with one end of a spline sleeve in the transmission housing. The other end of the spline sleeve is connected to one end of a spline shaft in the transmission housing. The other end of the spline shaft is connected to the input shaft in the angle box via a spline sleeve. The output shaft of the angle box is connected to the blade. The spline sleeve has an annular groove. A blade separation shaft is provided on the side wall of the transmission housing, and a blade is provided at the outer end of the blade separation shaft. The inner end of the release handle and the release shaft is connected to one end of the release plate. The other end of the release plate is provided with a set screw that acts as a pawl. The end of the set screw is located in the annular groove on the spline sleeve. The release handle, the release shaft, and the release plate together form a rotating lever mechanism. Rotating the release handle drives the release shaft to rotate synchronously, which in turn drives the release plate to rotate. The set screw contacts the annular groove and moves the spline sleeve, disengaging the spline sleeve from the end of the transfer case output shaft and cutting off the power transmission between the transfer case and the transmission case.

[0005] Furthermore, one end of the spline sleeve is provided with an internal spline that meshes with the output shaft of the transfer case to prevent slippage. A spring retaining ring is installed in the middle of the spline shaft. A compression spring is fitted onto the spline shaft and holds the spring retaining ring in place. Then, the other end of the spline sleeve is fitted onto the spline shaft so that its annular groove matches the set screw on the cutter separation plate. At the same time, the compression spring is pre-compressed between the spline sleeve and the spring retaining ring. The compression spring always applies a thrust to the spline sleeve to maintain the power connection state under normal conditions. After maintenance is completed, the compression spring is used to assist the spline sleeve in resetting so that the spline sleeve re-meshes with the end of the transfer case output shaft.

[0006] Furthermore, a positioning plate is provided on the outer wall of the transmission box, and positioning hole one and positioning hole two are provided on the positioning plate; the knife separation handle is provided with a positioning post that matches positioning hole one and positioning hole two; the position where positioning hole one matches positioning post is the position where spline sleeve one is disengaged from the end of the transfer case output shaft. After positioning hole one matches positioning post, the position of knife separation handle is locked to avoid safety accidents; the position where positioning hole two matches positioning post is the position where spline sleeve one is engaged with the end of the transfer case output shaft. After positioning hole two matches positioning post, it ensures that the transfer case output shaft transmits power normally through spline sleeve one; mechanical interlocking is achieved by changing the position of knife separation handle.

[0007] Furthermore, a washer is provided at the end of the transfer case output shaft to limit the spline sleeve one; under the action of the compression spring, the spline sleeve one engages with the end of the transfer case output shaft, and the spline sleeve one contacts the washer, limiting the position of movement of the spline sleeve one.

[0008] Furthermore, the set screw is located within the annular groove and does not contact the annular groove, thereby reducing friction between the set screw and the spline sleeve.

[0009] Furthermore, the washer is fixed to the end of the transfer case output shaft by screws.

[0010] Furthermore, the blade separation shaft passes through the interior of the blade separation hollow screw. Two hexagonal nuts are provided on the external thread of the blade separation hollow screw, and the two hexagonal nuts are located on both sides of the side wall of the transmission housing, fixing the blade separation hollow screw to the transmission housing. One end of the blade separation plate contacts the blade separation hollow screw and is fixedly connected to the blade separation shaft passing through the interior of the blade separation hollow screw. The other end of the blade separation plate is connected to a set screw. The set screw on the blade separation plate is set in an annular groove to form a rigid actuating mechanism, which vertically welds and fixes the blade separation shaft to the exposed end of the blade separation handle, ensuring that the blade separation handle can drive the blade separation shaft to rotate synchronously.

[0011] The beneficial effects of this utility model are as follows: The precise separation of power transmission between the transfer case and the transmission case is achieved through the engagement of the annular groove on the blade separation plate and the spline sleeve, eliminating the need to disassemble the transmission case and facilitating maintenance. The double holes on the positioning plate ensure a secure lock in the separated state. The compression spring simplifies the re-engagement process, improving the equipment's operating efficiency and safety. Operation is simple, the separation lock is reliable, and the spring-assisted reset makes the engagement process less strenuous, making operation convenient and improving work efficiency. Attached Figure Description

[0012] Figure 1 This is an isometric view of an embodiment of the present utility model; Figure 2 This is a front view of the external structure of an embodiment of the present utility model; Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is an embodiment of the present utility model. Figure 3 A magnified structural diagram of B in the diagram; Figure 5 This is a schematic diagram of the assembly of the positioning plate and the knife separation handle in an embodiment of this utility model; In the diagram: 1. Transmission housing; 2. Positioning plate; 3. Blade separation handle; 4. Blade separation shaft; 5. Transfer case output shaft; 6. Spline sleeve one; 7. Spline shaft; 8. Angle box input shaft; 9. Blade separation plate; 10. Blade separation hollow screw; 11. Hex nut; 12. Set screw; 13. Compression spring; 14. Spring retaining ring; 15. Washer; 16. Angle box; 17. Blade; 18. Power shaft; 19. Handle; 20. Annular groove; 21. Transfer case; 22. Positioning hole one; 23. Positioning pin; 24. Handle mounting hole; 25. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] See attached document Figure 1-5 A power separation device for a corn header cutter angle box includes a transfer case 22, a transmission housing 1, an angle box 17, and a cutter 18. The output shaft 5 of the transfer case 22 is splinedly engaged with one end of a spline sleeve 6 inside the transmission housing 1. The other end of the spline sleeve 6 is connected to one end of a spline shaft 7 inside the transmission housing 1. The other end of the spline shaft 7 is connected to the angle box input shaft 9 inside the angle box 17 via a spline sleeve 8. The output shaft of the angle box 17 is connected to the cutter 18. The device is characterized by: an annular groove 21 on the spline sleeve 6; a cutter separation shaft 4 on the side wall of the transmission housing 1; and a cutter separation device at the outer end of the cutter separation shaft 4. The inner end of the handle 3 and the knife separation shaft 4 is connected to one end of the knife separation plate 10. The other end of the knife separation plate 10 is provided with a set screw 13 as a pawl. The end of the set screw 13 is located in the annular groove 21 on the spline sleeve 6. The knife separation handle 3, the knife separation shaft 4 and the knife separation plate 10 together form a rotating lever mechanism. Rotating the knife separation handle 3 drives the knife separation shaft 4 to rotate synchronously, which in turn drives the knife separation plate 10 to rotate. The set screw 13 contacts the annular groove 21 and moves the spline sleeve 6. The spline sleeve 6 disengages from the end of the transfer case output shaft 5, cutting off the power transmission between the transfer case and the transmission case.

[0015] See attached document Figure 3 One end of the spline sleeve 6 is provided with an internal spline that meshes with the output shaft 5 of the transfer case to prevent slippage. A spring retainer 15 is installed in the middle of the spline shaft 7. A compression spring 14 is fitted into the spline shaft and presses against the spring retainer 15. Then, the other end of the spline sleeve 6 is fitted into the spline shaft 7 so that its annular groove 21 matches the set screw 13 on the cutter separation plate 10. At the same time, the compression spring 14 is pre-pressed between the spline sleeve 6 and the spring retainer 15. The compression spring 14 always applies a thrust to the spline sleeve 6 to maintain the power connection state under normal conditions. After maintenance is completed, the compression spring 14 is used to assist the spline sleeve 6 in resetting so that the spline sleeve 6 re-meshes with the end of the output shaft 5 of the transfer case.

[0016] See attached document Figure 3 and 5The transmission housing 1 has a positioning plate 2 on its outer wall, and positioning hole 23 and positioning hole 2 are provided on the positioning plate 2. The knife separation handle 3 is provided with a positioning post 24 that matches the positioning hole 23 and positioning hole 2. The position where positioning hole 23 matches the positioning post is the position where the spline sleeve 6 is disengaged from the end of the transfer case output shaft 5. After positioning hole 23 matches the positioning post 24, the position of knife separation handle 3 is locked to avoid safety accidents. The position where positioning hole 2 matches the positioning post 24 is the position where the spline sleeve 6 is engaged with the end of the transfer case output shaft 5. After positioning hole 2 matches the positioning post 24, the transfer case output shaft 5 is guaranteed to transmit power normally through spline sleeve 6. Mechanical interlocking is achieved by changing the position of knife separation handle (3).

[0017] See attached document Figure 3 The output shaft 5 of the transfer case is provided with a washer 16 at the end to limit the spline sleeve 6; under the action of the compression spring 14, the spline sleeve 6 engages with the end of the output shaft 5 of the transfer case, and the spline sleeve 6 contacts the washer 16, limiting the position of the spline sleeve 6.

[0018] See attached document Figure 3 The set screw 13 is located within the annular groove 21 and does not contact the annular groove 21, thereby reducing friction between the set screw 13 and the spline sleeve 6.

[0019] See attached document Figure 3 The washer 16 is fixed to the end of the transfer case output shaft 5 by screws.

[0020] See attached document Figure 1 , 3 4. The blade separation shaft 4 passes through the interior of the blade separation hollow screw 11. Two hexagonal nuts 12 are provided on the external thread of the blade separation hollow screw 11. The two hexagonal nuts 12 are located on both sides of the side wall of the transmission housing 1, fixing the blade separation hollow screw 11 to the transmission housing 1. One end of the blade separation plate 10 contacts the blade separation hollow screw 11 and is fixedly connected to the blade separation shaft 4 that passes through the interior of the blade separation hollow screw 11. The other end of the blade separation plate 10 is connected to the set screw 13. The set screw 13 on the blade separation plate 10 is set in the annular groove 21 to form a rigid actuating mechanism. The blade separation shaft 4 is vertically welded and fixed to the exposed end of the blade separation handle 3 to ensure that the blade separation handle 3 can drive the blade separation shaft 4 to rotate synchronously.

[0021] See attached document Figure 1 and 3 The handle 20 is provided on the knife separation handle 3 through the handle mounting hole 25.

[0022] See attached document Figure 1 The power shaft 19 of the transfer case 22 transmits power to the transfer case output shaft 5.

[0023] Under normal operating conditions, the transfer case output shaft 5 transmits power to the spline shaft 7, which meshes with the angle box input shaft 9, forming a power transmission path. When maintenance is required, rotating the cutter separation handle 3 rotates the cutter separation shaft 4, which in turn drives the cutter separation plate 10 to move axially. The set screw 13 at the end of the cutter separation plate 10 moves the spline sleeve 6, disengaging it from the transfer case output shaft 5 and compressing the compression spring 14, thus separating the power. Locking the cutter separation handle 3 facilitates maintenance of the angle box or replacement of the cutter shaft bearings. After maintenance, the cutter separation handle 3 is unlocked. Under the action of the compression spring 14, the spline sleeve 6 returns to its original position and re-engages with the transfer case output shaft 5, allowing power transmission. The washer 16 at the end of the transfer case output shaft 5 limits the movement of the spline sleeve 6. The fixed plate 2 has two positioning holes, namely positioning hole one and positioning hole two, which are used to lock the position of the knife separation handle 3 when the spline sleeve 6 and the transfer case output shaft 5 are in a separated or engaged state.

Claims

1. A power separation device for a corn header cutter angle box, comprising a transfer case (22), a transmission housing (1), an angle box (17), and a cutter (18), wherein the end of the transfer case output shaft (5) of the transfer case (22) is splinedly engaged with one end of a spline sleeve (6) in the transmission housing (1), the other end of the spline sleeve (6) is connected to one end of a spline shaft (7) in the transmission housing (1), the other end of the spline shaft (7) is connected to the angle box input shaft (9) in the angle box (17) via a spline sleeve (8), and the output shaft of the angle box (17) is connected to the cutter (18); characterized in that: The spline sleeve (6) is provided with an annular groove (21); the side wall of the transmission housing (1) is provided with a knife separation shaft (4), the outer end of the knife separation shaft (4) is provided with a knife separation handle (3), the inner end of the knife separation shaft (4) is connected to one end of the knife separation plate (10), the other end of the knife separation plate (10) is provided with a set screw (13) as a pawl, and the end of the set screw (13) is located in the annular groove (21) on the spline sleeve (6); the knife separation handle (3), the knife separation shaft (4) and the knife separation plate (10) together constitute a rotating lever mechanism. Rotating the knife separation handle (3) drives the knife separation shaft (4) to rotate synchronously and drive the knife separation plate (10) to rotate. The set screw (13) contacts the annular groove (21) and moves the spline sleeve (6). The spline sleeve (6) disengages from the end of the transfer case output shaft (5) and cuts off the power transmission between the transfer case and the transmission housing.

2. The corn header blade angle box power separation device according to claim 1, characterized in that: One end of the spline sleeve (6) is provided with an internal spline that meshes with the output shaft (5) of the transfer case. A spring retainer (15) is installed in the middle of the spline shaft (7). A compression spring (14) is put into the spline shaft (7) and holds the spring retainer (15). Then, the other end of the spline sleeve (6) is put into the spline shaft (7) so that its annular groove (21) matches the set screw (13) on the knife separation plate (10).

3. A power separation device for a corn header blade angle box according to claim 1 or 2, characterized in that: The transmission housing (1) has a positioning plate (2) on its outer wall, and the positioning plate (2) has a positioning hole one (23) and a positioning hole two. The knife separation handle (3) has a positioning pin (24) that matches the positioning hole one and the positioning hole two. The position where the positioning hole one (23) matches the positioning pin (24) is the position where the spline sleeve one (6) and the end of the transfer case output shaft (5) are disengaged. After the positioning hole one (23) matches the positioning pin (24), the position of the knife separation handle (3) is locked. The position where the positioning hole two matches the positioning pin (24) is the position where the spline sleeve one (6) and the end of the transfer case output shaft (5) are engaged. After the positioning hole two matches the positioning pin (24), the transfer case output shaft (5) is guaranteed to transmit power normally through the spline sleeve one (6). The mechanical interlock is achieved by changing the position of the knife separation handle (3).

4. A power separation device for a corn header blade angle box according to claim 1 or 2, characterized in that: The output shaft (5) of the transfer case is provided with a washer (16) to limit the spline sleeve (6); under the action of the compression spring (14), the spline sleeve (6) meshes with the end of the output shaft (5) of the transfer case, and the spline sleeve (6) contacts the washer (16), limiting the position of the spline sleeve (6).

5. The corn header blade angle box power separation device according to claim 4, characterized in that: The set screw (13) is inside the annular groove (21) and does not contact the annular groove (21).

6. The power separation device for the corn header blade angle box according to claim 5, characterized in that: The washer (16) is fixed to the end of the transfer case output shaft (5) by screws.

7. A power separation device for a corn header blade angle box according to claim 1 or 2, characterized in that: The blade separation shaft (4) passes through the interior of the blade separation hollow screw (11). Two hexagonal nuts (12) are provided on the external thread of the blade separation hollow screw (11). The two hexagonal nuts (12) are located on both sides of the side wall of the transmission box (1) to fix the blade separation hollow screw (11) on the transmission box (1). One end of the blade separation plate (10) is in contact with the blade separation hollow screw (11) and is fixedly connected to the blade separation shaft (4) that passes through the interior of the blade separation hollow screw (11). The other end of the blade separation plate (10) is connected to the set screw (13). The set screw (13) on the blade separation plate (10) is set in the annular groove (21) to form a rigid actuation mechanism, which vertically welds and fixes the blade separation shaft (4) and the exposed end of the blade separation handle (3).

Images