Turning device for agricultural mechanical gearbox

Abstract

The invention discloses a turning device for a gearbox of an agricultural machine, which belongs to the technical field of gearbox processing and comprises a processing mechanism for turning a gearbox shaft of the gearbox of the agricultural machine. The machining mechanism is provided with four clamping mechanisms used for clamping the gear box shaft and a turnover mechanism used for turning over the gear box shaft. The gear box shaft can be driven by the machining mechanism to be automatically transferred among the four stations, only the gear box shaft needs to be manually put in and taken out, and use is convenient; the gear box shaft can be automatically clamped through the arranged clamping mechanism, clamping of the gear box shaft is relieved when shaft phase rotation needs to be conducted on the gear box shaft, and machining is convenient; according to the gear box shaft turning device, the gear box shaft subjected to primary turning can be rotated by 180 degrees through the arranged overturning mechanism, secondary turning is conducted on the gear box shaft through the machining mechanism, machining dead angles of the gear box shaft are prevented, and the machining effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of gearbox processing, and particularly relates to a turning device for an agricultural machinery gearbox. Background Art

[0002] In agricultural production, the gearbox of agricultural machinery (such as tractors, harvesters, seeders, etc.) is a core component for power transmission. Its processing accuracy and reliability directly affect the working efficiency and service life of the whole machine. The gearbox usually consists of multiple gears, a shafting, and a housing. Among them, the processing quality of the gear shaft in the gearbox is particularly crucial, and high-precision dimensional tolerances need to be ensured to ensure smooth gear meshing and efficient transmission. Currently, the processing of gearbox shafts mainly relies on traditional turning processes. The turning devices for gearbox shafts in the prior art usually cannot achieve full-automatic processing of gearbox shafts and there are machining dead corners. Summary of the Invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: a turning device for an agricultural machinery gearbox, including a processing mechanism for turning the gearbox shaft of the agricultural machinery gearbox. The processing mechanism includes a base, and four clamping mechanisms for clamping the gearbox shaft and a turning mechanism for turning the gearbox shaft are arranged on the processing mechanism;

[0004] The processing mechanism includes a rotating seat rotatably installed on the base, and a central gear is rotatably installed in the rotating seat.

[0005] Further, the processing mechanism further includes a rotating seat gear fixedly installed on the rotating seat, a rotating motor fixedly installed on the base, a motor gear fixedly installed on the motor shaft of the rotating motor, the motor gear meshes with the rotating seat gear, a self-rotating motor is fixedly installed in the rotating seat, and a driving gear is fixedly installed on the motor shaft of the self-rotating motor, and the driving gear meshes with the central gear.

[0006] Further, four clamping electric cylinders are fixedly installed on the rotating seat, and an inclined rod is fixedly installed on the output end of the clamping electric cylinder.

[0007] Further, a central column is fixedly installed on the base, a lifting platform is slidably installed on the central column, a central motor is fixedly installed on the base, a central lead screw is fixedly installed on the motor shaft of the central motor, and the central lead screw forms a screw drive with the lifting platform.

[0008] Further, two turning modules are arranged on the lifting platform. Each turning module includes a turning motor fixedly installed on the lifting platform. A turning gear is fixedly installed on the motor shaft of the turning motor. A turning rack is slidably installed on the lifting platform. The turning rack meshes with the turning gear. A rotating rod is rotatably installed on the turning rack. A turning tool holder is rotatably installed on the rotating rod. The turning tool holder is slidably installed with the lifting platform. A turning tool is detachably and fixedly installed on the turning tool holder.

[0009] The rotation motor drives the motor gear to rotate, thereby driving the turntable gear and the rotating seat to rotate, and then driving the four clamping mechanisms to move. The rotating seat rotates clockwise by a quarter of a turn each time. The turning motor rotates and drives the turning rack to slide along the lifting platform through the turning gear, and drives the turning tool holder and the turning tool to slide relative to the lifting platform through the rotating rod, thereby adjusting the extension amount of the turning tool. The rotation motor rotates to drive the driving gear to rotate, drives the central gear to rotate, drives the self-rotating gear to rotate, and then drives the four clamping mechanisms and the gearbox shaft to rotate together. The central motor rotates to drive the central lead screw to rotate, thereby driving the lifting platform to lift relative to the central column, and turning the two gearbox shafts beside them respectively with the two turning tools.

[0010] Further, the clamping mechanism includes a clamping disc rotatably installed on the rotating seat. A rotating column is fixedly installed below the clamping disc. A self-rotating gear is fixedly installed on the rotating column. The self-rotating gear meshes with the central gear.

[0011] Further, a rotating ring is rotatably installed on the clamping disc. A pushing block is fixedly installed on the rotating ring. The lower surface of the pushing block is a slope. Three clamping rods are rotatably installed on the clamping disc. A clamping plate is fixedly installed on the clamping rod. An outer rotating rod is rotatably installed on the clamping rod. The outer rotating rod is rotatably installed with the rotating ring. Three clamping springs are arranged between the rotating ring and the clamping disc.

[0012] The clamping electric cylinder extends, driving the inclined rod to rise. The inclined rod drives the rotating ring to rotate relative to the clamping disc through the slope of the pushing block. The clamping springs are stretched, thereby driving the clamping rod to rotate through the outer rotating rod, and then driving the clamping plate to move outwards. At this time, the gearbox shaft is placed on the clamping disc. Subsequently, the clamping electric cylinder contracts, the inclined rod descends, and the clamping springs rebound, driving the clamping rod to rotate, causing the three clamping plates to move inwards, and clamping the gearbox shaft with the three clamping plates.

[0013] Further, the flipping mechanism includes a vertical frame fixedly installed on the base. A steering motor is fixedly installed on the vertical frame. A square column is fixedly installed on the motor shaft of the steering motor. A lifting motor is fixedly installed on the base. A lifting lead screw is fixedly installed on the motor shaft of the lifting motor. A lifting seat is slidably installed on the vertical frame. The lifting seat and the lifting lead screw form a screw drive. A driving bevel gear is rotatably installed on the lifting seat. The driving bevel gear is slidably installed with the square column. A rotating column is rotatably installed on the lifting seat. A rotating platform is fixedly installed on the rotating column. A side bevel gear is fixedly installed on the rotating column. The side bevel gear meshes with the driving bevel gear.

[0014] Further, two jaw modules are arranged on the rotating platform. Each jaw module includes two jaws slidably installed on the rotating platform. A jaw spring is arranged between the two jaws. A release motor is fixedly installed on the rotating platform. A lead screw is rotatably installed on the motor shaft of the release motor. A release push block is slidably installed on the rotating platform. The release push block and the lead screw form a screw drive. A slope is arranged on the release push block. A slope is arranged on the jaw. The slope of the release push block is slidably installed with the slope of the jaw.

[0015] After the gearbox shaft undergoes the first turning process, the end of the gearbox shaft is not processed because it is clamped by the clamping plate. It is necessary to rotate the gearbox shaft axially by 180 degrees and then perform another processing to ensure the full turning of the gearbox shaft. After the gearbox shaft undergoes the first turning process, the rotating seat rotates 90 degrees, driving the gearbox shaft to reach beside the vertical frame. The release motor rotates, driving the release push block to move outwards through the lead screw, pushing the jaws to open, and the jaw spring is stretched. Subsequently, the steering motor rotates, driving the square column and the steering motor to rotate, thereby driving the side bevel gear, the rotating column, and the rotating platform to rotate 90 degrees. Subsequently, the lifting motor rotates, driving the lifting lead screw to rotate, thereby driving the lifting seat to descend, enabling the gearbox shaft to reach between the jaws. Subsequently, the release motor rotates, driving the release push block to move inwards. The jaw spring rebounds, causing the jaws to move inwards and clamping the gearbox shaft. At this time, the clamping cylinder beside the gearbox shaft clamped by the jaws extends, driving the inclined rod to rise and driving the rotating ring to rotate, so that the clamping plate no longer clamps the gearbox shaft. The lifting seat rises, lifting the gearbox shaft away from the clamping disk. Subsequently, the rotating platform rotates 180 degrees, axially rotating the gearbox shaft by 180 degrees. The lifting seat descends, placing the processed end of the gearbox shaft on the clamping disk. The clamping cylinder contracts, and the clamping plate clamps the gearbox shaft again, completing the flipping of the gearbox shaft. Subsequently, the rotating seat continues to rotate clockwise by 90 degrees to perform secondary processing on the gearbox shaft.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: (1) The processing mechanism provided by the present invention can drive the gearbox shaft to be automatically transferred among four workstations, and it only needs to manually put the gearbox shaft in and take it out, which is convenient to use; (2) The clamping mechanism provided by the present invention can realize the automatic clamping of the gearbox shaft, and when it is necessary to rotate the gearbox shaft axially, the clamping of the gearbox shaft is released, which is convenient for processing;

[0017] (3) The flipping mechanism provided by the present invention can rotate the gearbox shaft after primary turning by 180 degrees, and the processing mechanism performs secondary turning on the gearbox shaft, preventing processing dead corners on the gearbox shaft and achieving good processing effects; (4) The processing mechanism and the clamping mechanism provided by the present invention can process gearbox shafts with different lengths and diameters, and have good processing adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the processing mechanism of the present invention Figure 1 。

[0020] Figure 3 It is a schematic diagram of the structure of the processing mechanism of the present invention Figure 2 。

[0021] Figure 4 It is a schematic diagram of the structure of the processing mechanism of the present invention Figure 3 。

[0022] Figure 5 It is a schematic diagram of the structure of the turning module of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the clamping mechanism of the present invention Figure 1 。

[0024] Figure 7 It is a schematic diagram of the structure of the clamping mechanism of the present invention Figure 2 。

[0025] Figure 8 It is a schematic diagram of the structure of the flipping mechanism of the present invention Figure 1 。

[0026] Figure 9 It is a schematic diagram of the structure of the flipping mechanism of the present invention Figure 2 。

[0027] Figure 10 It is a schematic diagram of the structure of the flipping mechanism of the present invention Figure 3 。

[0028] Reference numerals: 101 - base; 102 - rotating motor; 103 - motor gear; 104 - rotating seat; 105 - rotating seat gear; 106 - clamping cylinder; 107 - inclined rod; 108 - central column; 109 - self - rotating motor; 110 - central gear; 111 - central motor; 112 - central lead screw; 113 - lifting table; 114 - turning motor; 115 - turning gear; 116 - turning rack; 117 - rotating rod; 118 - tool holder; 119 - turning tool; 120 - driving gear; 201 - clamping disc; 202 - rotating ring; 203 - pushing block; 204 - clamping rod; 205 - outer rotating rod; 206 - rotating column; 207 - self - rotating gear; 208 - clamping spring; 209 - clamping plate; 301 - vertical frame; 302 - lifting motor; 303 - lifting lead screw; 304 - steering motor; 305 - square column; 306 - lifting seat; 307 - driving bevel gear; 308 - turntable; 309 - rotating column; 310 - side bevel gear; 311 - jaw; 312 - jaw spring; 313 - releasing motor; 314 - releasing pushing block; 315 - lead screw; 4 - gearbox shaft. Detailed implementation manners

[0029] The following further describes the detailed implementation manners of the present invention in conjunction with the accompanying drawings.

[0030] Embodiment: Refer to Figures 1 - 10 , a turning device for an agricultural machinery gearbox, including a processing mechanism for turning the gearbox shaft 4 of the agricultural machinery gearbox. The processing mechanism includes a base 101, and there are four clamping mechanisms for clamping the gearbox shaft 4 and a turning mechanism for turning the gearbox shaft 4 arranged on the processing mechanism;

[0031] The processing mechanism includes a rotating seat 104 rotatably installed on the base 101, and a central gear 110 is rotatably installed inside the rotating seat 104.

[0032] As Figures 2 - 5 shown, the processing mechanism further includes a rotating seat gear 105 fixedly installed on the rotating seat 104, a rotating motor 102 fixedly installed on the base 101, a motor gear 103 fixedly installed on the motor shaft of the rotating motor 102, the motor gear 103 meshes with the rotating seat gear 105, a self - rotating motor 109 is fixedly installed inside the rotating seat 104, and a driving gear 120 is fixedly installed on the motor shaft of the self - rotating motor 109, and the driving gear 120 meshes with the central gear 110.

[0033] As Figures 2 - 5 shown, four clamping cylinders 106 are fixedly installed on the rotating seat 104, and an inclined rod 107 is fixedly installed on the output end of the clamping cylinder 106.

[0034] As Figures 2 - 5As shown in the figure, a central column 108 is fixedly installed on the base 101. A lifting table 113 is slidably installed on the central column 108. A central motor 111 is fixedly installed on the base 101. A central lead screw 112 is fixedly installed on the motor shaft of the central motor 111. The central lead screw 112 forms a threaded drive with the lifting table 113.

[0035] As Figures 2 - 5 shown in the figure, two turning modules are arranged on the lifting table 113. The turning module includes a turning motor 114 fixedly installed on the lifting table 113. A turning gear 115 is fixedly installed on the motor shaft of the turning motor 114. A turning rack 116 is slidably installed on the lifting table 113. The turning rack 116 meshes with the turning gear 115. A rotating rod 117 is rotatably installed on the turning rack 116. A turning tool holder 118 is rotatably installed on the rotating rod 117. The turning tool holder 118 is slidably installed with the lifting table 113. A turning tool 119 is detachably and fixedly installed on the turning tool holder 118.

[0036] The rotation motor 102 drives the motor gear 103 to rotate, thereby driving the turntable gear 105 and the rotating seat 104 to rotate, thereby driving the four clamping mechanisms to move. The rotating seat 104 rotates clockwise by one-quarter turn each time. The rotation of the turning motor 114 drives the turning rack 116 to slide along the lifting table 113 through the turning gear 115, and drives the turning tool holder 118 and the turning tool 119 to slide relative to the lifting table 113 through the rotating rod 117, thereby adjusting the extension amount of the turning tool 119. The rotation of the self-rotation motor 109 drives the drive gear 120 to rotate, drives the central gear 110 to rotate, drives the self-rotation gear 207 to rotate, thereby driving the four clamping mechanisms and the gearbox shaft 4 to rotate together. The rotation of the central motor 111 drives the central lead screw 112 to rotate, thereby driving the lifting table 113 to lift relative to the central column 108, and the two turning tools 119 respectively perform turning processing on the two gearbox shafts 4 beside them.

[0037] As Figure 6 、 Figure 7 shown in the figure, the clamping mechanism includes a clamping disc 201 rotatably installed on the rotating seat 104. A rotating column 206 is fixedly installed below the clamping disc 201. A self-rotation gear 207 is fixedly installed on the rotating column 206. The self-rotation gear 207 meshes with the central gear 110.

[0038] As Figure 6 、 Figure 7As shown, a rotating ring 202 is rotatably mounted on a clamping disc 201. A pushing block 203 is fixedly mounted on the rotating ring 202. The lower surface of the pushing block 203 is a slope. Three clamping rods 204 are rotatably mounted on the clamping disc 201. A clamping plate 209 is fixedly mounted on the clamping rod 204. An outer rotating rod 205 is rotatably mounted on the clamping rod 204. The outer rotating rod 205 is rotatably mounted with the rotating ring 202. Three clamping springs 208 are provided between the rotating ring 202 and the clamping disc 201.

[0039] The clamping electric cylinder 106 extends, driving the inclined rod 107 to rise. The inclined rod 107 drives the rotating ring 202 to rotate relative to the clamping disc 201 through the slope of the pushing block 203. The clamping spring 208 is stretched, thereby driving the clamping rod 204 to rotate through the outer rotating rod 205, and then driving the clamping plate 209 to move outwards. At this time, the gearbox shaft 4 is placed on the clamping disc 201. Subsequently, the clamping electric cylinder 106 contracts, the inclined rod 107 descends, and the clamping spring 208 rebounds, driving the clamping rod 204 to rotate, causing the three clamping plates 209 to move inwards to clamp the gearbox shaft 4 through the three clamping plates 209.

[0040] As Figures 8 - 10 shown, the flipping mechanism includes a vertical frame 301 fixedly mounted on the base 101. A steering motor 304 is fixedly mounted on the vertical frame 301. A square column 305 is fixedly mounted on the motor shaft of the steering motor 304. A lifting motor 302 is fixedly mounted on the base 101. A lifting lead screw 303 is fixedly mounted on the motor shaft of the lifting motor 302. A lifting seat 306 is slidably mounted on the vertical frame 301. The lifting seat 306 forms a screw drive with the lifting lead screw 303. A driving bevel gear 307 is rotatably mounted on the lifting seat 306. The driving bevel gear 307 is slidably mounted with the square column 305. A rotating column 309 is rotatably mounted on the lifting seat 306. A rotating table 308 is fixedly mounted on the rotating column 309. A side bevel gear 310 is fixedly mounted on the rotating column 309. The side bevel gear 310 meshes with the driving bevel gear 307.

[0041] As Figures 8 - 10 shown, two jaw modules are provided on the rotating table 308. The jaw module includes two jaws 311 slidably mounted on the rotating table 308. A jaw spring 312 is provided between the two jaws 311. A release motor 313 is fixedly mounted on the rotating table 308. A lead screw 315 is rotatably mounted on the motor shaft of the release motor 313. A release push block 314 is slidably mounted on the rotating table 308. The release push block 314 forms a screw drive with the lead screw 315. A slope is provided on the release push block 314. A slope is provided on the jaw 311. The slope of the release push block 314 is slidably mounted with the slope of the jaw 311.

[0042] After the gearbox shaft 4 has undergone the first turning process, the end of the gearbox shaft 4 is not processed because it is clamped by the clamping plate 209. It is necessary to rotate the gearbox shaft 4 axially by 180 degrees and then perform another process to ensure the full turning process of the gearbox shaft 4. After the gearbox shaft 4 has undergone the first turning process, the rotating seat 104 rotates 90 degrees, driving the gearbox shaft 4 to reach beside the vertical frame 301. The release motor 313 rotates, driving the release push block 314 to move outwards through the lead screw 315, pushing the clamping jaws 311 to open, and the clamping jaw spring 312 is stretched. Subsequently, the steering motor 304 rotates, driving the square column 305 and the steering motor 304 to rotate, thereby driving the side bevel gear 310, the rotating column 309, and the turntable 308 to rotate 90 degrees. Subsequently, the lifting motor 302 rotates, driving the lifting lead screw 303 to rotate, thereby driving the lifting seat 306 to descend, enabling the gearbox shaft 4 to reach between the clamping jaws 311. Subsequently, the release motor 313 rotates, driving the release push block 314 to move inwards, and the clamping jaw spring 312 rebounds, causing the clamping jaws 311 to move inwards to clamp the gearbox shaft 4. At this time, the clamping cylinder 106 beside the gearbox shaft 4 clamped by the clamping jaws 311 extends, driving the inclined rod 107 to rise, driving the rotating ring 202 to rotate, so that the clamping plate 209 no longer clamps the gearbox shaft 4. The lifting seat 306 rises, lifting the gearbox shaft 4 off the clamping disc 201. Subsequently, the turntable 308 rotates 180 degrees, causing the gearbox shaft 4 to rotate axially by 180 degrees. The lifting seat 306 descends, placing the processed end of the gearbox shaft 4 on the clamping disc 201. The clamping cylinder 106 contracts, and the clamping plate 209 clamps the gearbox shaft 4 again, completing the flipping of the gearbox shaft 4. Subsequently, the rotating seat 104 continues to rotate clockwise by 90 degrees to perform a secondary process on the gearbox shaft 4.

[0043] The working principle of a hardness detection device for stainless steel angle steel disclosed by the present invention is as follows: The clamping electric cylinder 106 extends, driving the inclined rod 107 to rise. The inclined rod 107 drives the rotating ring 202 to rotate relative to the clamping disc 201 through the slope of the pushing block 203, and the clamping spring 208 is stretched. Then, it drives the clamping rod 204 to rotate through the outer rotating rod 205, thereby driving the clamping plate 209 to move outwards. At this time, the gearbox shaft 4 is placed on the clamping disc 201. Subsequently, the clamping electric cylinder 106 contracts, the inclined rod 107 descends, and the clamping spring 208 rebounds, driving the clamping rod 204 to rotate, causing the three clamping plates 209 to move inwards, and clamping the gearbox shaft 4 through the three clamping plates 209. The rotating motor 102 drives the motor gear 103 to rotate, thereby driving the turntable gear 105 and the rotating seat 104 to rotate, and then driving the four clamping mechanisms to move. The rotating seat 104 rotates clockwise by one-quarter turn each time. The turning motor 114 rotates and drives the turning rack 116 to slide along the lifting platform 113 through the turning gear 115, and drives the tool holder 118 and the tool 119 to slide relative to the lifting platform 113 through the rotating rod 117, thereby adjusting the extension amount of the tool 119. The self-rotating motor 109 rotates and drives the driving gear 120 to rotate, driving the central gear 110 to rotate, driving the self-rotating gear 207 to rotate, thereby driving the four clamping mechanisms and the gearbox shaft 4 to rotate together. The central motor 111 rotates and drives the central lead screw 112 to rotate, thereby driving the lifting platform 113 to lift relative to the central column 108, and machining the two gearbox shafts 4 beside it respectively through the two tools 119.After the gearbox shaft 4 has undergone the first turning process, the end of the gearbox shaft 4 is not processed because it is clamped by the clamping plate 209. It is necessary to rotate the gearbox shaft 4 axially by 180 degrees and then perform another process to ensure the full turning process of the gearbox shaft 4. After the gearbox shaft 4 has undergone the first turning process, the rotating seat 104 rotates 90 degrees, driving the gearbox shaft 4 to reach beside the vertical frame 301. The release motor 313 rotates, driving the release push block 314 to move outwards through the lead screw 315, pushing the clamping jaws 311 to open, and the clamping jaw spring 312 is stretched. Subsequently, the steering motor 304 rotates, driving the square column 305 and the steering motor 304 to rotate, thereby driving the side bevel gear 310, the rotating column 309, and the turntable 308 to rotate 90 degrees. Subsequently, the lifting motor 302 rotates, driving the lifting lead screw 303 to rotate, thereby driving the lifting seat 306 to descend, enabling the gearbox shaft 4 to reach between the clamping jaws 311. Subsequently, the release motor 313 rotates, driving the release push block 314 to move inwards, and the clamping jaw spring 312 rebounds, causing the clamping jaws 311 to move inwards to clamp the gearbox shaft 4. At this time, the clamping cylinder 106 beside the gearbox shaft 4 clamped by the clamping jaws 311 extends, driving the inclined rod 107 to rise, driving the rotating ring 202 to rotate, so that the clamping plate 209 no longer clamps the gearbox shaft 4. The lifting seat 306 rises, lifting the gearbox shaft 4 away from the clamping disc 201. Subsequently, the turntable 308 rotates 180 degrees, causing the gearbox shaft 4 to rotate axially by 180 degrees. The lifting seat 306 descends, placing the processed end of the gearbox shaft 4 on the clamping disc 201. The clamping cylinder 106 contracts, and the clamping plate 209 clamps the gearbox shaft 4 again, completing the flipping of the gearbox shaft 4. Subsequently, the rotating seat 104 continues to rotate clockwise by 90 degrees to perform a secondary process on the gearbox shaft 4.

[0044] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope of the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A turning device for an agricultural machinery gearbox, comprising a processing mechanism for turning a gearbox shaft (4) of the agricultural machinery gearbox, characterized in that: The processing mechanism includes a base (101), and there are four clamping mechanisms for clamping the gearbox shaft (4) and a flipping mechanism for flipping the gearbox shaft (4) arranged on the processing mechanism; The processing mechanism includes a rotating seat (104) rotatably installed on the base (101), and a central gear (110) is rotatably installed inside the rotating seat (104).

2. The turning device for an agricultural machinery gearbox according to claim 1, wherein: The processing mechanism further includes a rotating seat gear (105) fixedly installed on the rotating seat (104), a rotating motor (102) fixedly installed on the base (101), a motor gear (103) fixedly installed on the motor shaft of the rotating motor (102), the motor gear (103) meshes with the rotating seat gear (105), a self-rotating motor (109) is fixedly installed inside the rotating seat (104), a driving gear (120) is fixedly installed on the motor shaft of the self-rotating motor (109), and the driving gear (120) meshes with the central gear (110).

3. The turning device for an agricultural machinery gearbox according to claim 2, characterized in that: Four clamping cylinders (106) are fixedly installed on the rotating seat (104), and an inclined rod (107) is fixedly installed on the output end of the clamping cylinder (106).

4. A turning device for an agricultural machinery gearbox according to claim 3, characterized in that: A central column (108) is fixedly installed on the base (101), a lifting platform (113) is slidably installed on the central column (108), a central motor (111) is fixedly installed on the base (101), a central lead screw (112) is fixedly installed on the motor shaft of the central motor (111), and the central lead screw (112) forms a threaded drive with the lifting platform (113).

5. A turning device for an agricultural machinery gearbox according to claim 4, characterized in that: Two turning modules are arranged on the lifting platform (113). The turning module includes a turning motor (114) fixedly installed on the lifting platform (113), a turning gear (115) fixedly installed on the motor shaft of the turning motor (114), a turning rack (116) slidably installed on the lifting platform (113), the turning rack (116) meshes with the turning gear (115), a rotating rod (117) is rotatably installed on the turning rack (116), a turning tool holder (118) is rotatably installed on the rotating rod (117), the turning tool holder (118) is slidably installed with the lifting platform (113), and a turning tool (119) is detachably and fixedly installed on the turning tool holder (118).

6. A turning device for an agricultural machinery gearbox according to claim 1, characterized in that: The clamping mechanism includes a clamping disc (201) rotatably installed on the rotating seat (104), a rotating column (206) is fixedly installed below the clamping disc (201), a self-rotating gear (207) is fixedly installed on the rotating column (206), and the self-rotating gear (207) meshes with the central gear (110).

7. A turning device for an agricultural machinery gearbox according to claim 6, characterized in that: A rotating ring (202) is rotatably installed on the clamping disc (201), a pushing block (203) is fixedly installed on the rotating ring (202), the lower surface of the pushing block (203) is a slope, three clamping rods (204) are rotatably installed on the clamping disc (201), a clamping plate (209) is fixedly installed on the clamping rod (204), an outer rotating rod (205) is rotatably installed on the clamping rod (204), the outer rotating rod (205) is rotatably installed with the rotating ring (202), and three clamping springs (208) are arranged between the rotating ring (202) and the clamping disc (201).

8. A turning device for an agricultural machinery gearbox according to claim 1, characterized in that: The flipping mechanism includes a vertical frame (301) fixedly installed on the base (101). A steering motor (304) is fixedly installed on the vertical frame (301). A square column (305) is fixedly installed on the motor shaft of the steering motor (304). A lifting motor (302) is fixedly installed on the base (101). A lifting lead screw (303) is fixedly installed on the motor shaft of the lifting motor (302). A lifting seat (306) is slidably installed on the vertical frame (301). The lifting seat (306) is in threaded transmission with the lifting lead screw (303). A driving bevel gear (307) is rotatably installed on the lifting seat (306). The driving bevel gear (307) is slidably installed with the square column (305). A rotating column (309) is rotatably installed on the lifting seat (306). A rotating table (308) is fixedly installed on the rotating column (309). A side bevel gear (310) is fixedly installed on the rotating column (309). The side bevel gear (310) meshes with the driving bevel gear (307).

9. A turning device for an agricultural machinery gearbox according to claim 8, characterized in that: Two gripper modules are arranged on the rotating table (308). Each gripper module includes two grippers (311) slidably installed on the rotating table (308). A gripper spring (312) is arranged between the two grippers (311). A release motor (313) is fixedly installed on the rotating table (308). A lead screw (315) is rotatably installed on the motor shaft of the release motor (313). A release push block (314) is slidably installed on the rotating table (308). The release push block (314) is in threaded transmission with the lead screw (315). The release push block (314) is provided with a slope surface. The gripper (311) is provided with a slope surface. The slope surface of the release push block (314) is slidably installed with the slope surface of the gripper (311).

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