Folding returning machine with front central mowing disc

Abstract

The utility model discloses a folding returning machine with a front central mowing disc, which comprises a hydraulic folding suspension assembly, and the front central mowing disc is arranged in the middle of the hydraulic folding suspension assembly. The front central mowing disc comprises a fixing frame, the fixing frame is fixedly connected with the hydraulic folding suspension assembly, a connecting frame is arranged at the front end of the fixing frame through bolts, a rear upper connecting shaft and a rear lower connecting shaft are arranged at the upper end and the lower end of the connecting frame respectively, a middle adjusting sleeve is hinged to the rear upper connecting shaft, and a swing arm is connected to the rear lower connecting shaft in a sleeved mode. The other end of the middle adjusting sleeve and the other end of the swing arm are provided with a mounting seat through a front upper connecting shaft and a front lower connecting shaft respectively, a hydraulic motor is arranged on the mounting seat, a hood is arranged at the bottom of the mounting seat, and a cutter shaft is arranged on an output shaft of the hydraulic motor and provided with a mowing cutter. Straw in the front of the middle of the folding type straw returning machine is cut through the front central mowing disc, the left returning machine and the right returning machine in the rear of the folding type straw returning machine cut remaining straw respectively, and therefore the height of stubbles in the whole cutting range is kept consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a foldable field returning machine with a front central mowing disc. Background Art

[0002] Current foldable straw choppers are popular with large-scale farmers due to their large operating width (over 4 meters), high efficiency, and foldable width, making them safe and convenient for relocation. However, due to a gap between the left and right straw choppers, the moving blades cannot cut the straw in the middle. After the choppers have finished operating, a 5-8 cm wide strip of uncut straw remains in the middle, hindering subsequent operations.

[0003] Based on this situation, a foldable field return machine with a front central mowing disc is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to address the defects and shortcomings of the existing technology and provide a foldable straw returner with a front central mowing disc, which ensures that the straw is completely and thoroughly crushed after the straw returner is operated, and the stubble height after the straw is crushed is consistent, and does not affect subsequent operations.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a foldable field return machine with a front central mowing disc, including a hydraulic folding suspension assembly, and its innovation lies in: a front central mowing disc is arranged in the middle of the hydraulic folding suspension assembly; the front central mowing disc includes a fixing frame, the fixing frame is fixedly connected to the hydraulic folding suspension assembly, the front end of the fixing frame is provided with a connecting frame by bolts, the upper and lower ends of the connecting frame are respectively provided with a rear upper connecting shaft and a rear lower connecting shaft, the upper and lower ends of the connecting frame are respectively provided with a middle adjustment sleeve, the lower and rear lower connecting shaft are sleeved with a swing arm, the other ends of the middle adjustment sleeve and the swing arm are respectively provided with mounting seats through the front upper connecting shaft and the front lower connecting shaft, height adjustment sleeves and floating springs are respectively provided between the left and right ends of the upper and rear connecting shafts, a hydraulic motor is provided on the mounting seat, a machine cover is provided at the bottom of the mounting seat, a knife shaft is provided on the output shaft of the hydraulic motor, and a mowing knife is provided on the knife shaft.

[0006] Furthermore, the swing arm includes a swing arm body, and shaft sleeves are respectively provided at the front and rear ends of the swing arm body. A pair of hanging ears are also provided on the swing arm body. A pair of transport lock pin mounting holes are provided at the bottom of the hydraulic folding suspension assembly. When the field return machine is folded for transportation, the hanging ears are aligned with the transport lock pin mounting holes, and the lock pin is inserted.

[0007] Furthermore, the mounting seat includes a hydraulic motor mounting seat and a connecting seat.

[0008] Furthermore, the cutter shaft includes a transmission sleeve, which is in transmission connection with the output shaft of the hydraulic motor. A mower blade mounting frame is provided at the lower end of the transmission sleeve, and mower blades are provided on the left and right sides of the mower blade mounting frame.

[0009] Furthermore, a plurality of adjustment holes are provided on the fixing frame, and a plurality of adjustment holes are also provided at corresponding positions of the hydraulic folding suspension assembly, and the installation height of the front central mowing disc is adjusted by the relative positions of the adjustment holes.

[0010] Furthermore, armrests are respectively provided on the left and right sides of the hood.

[0011] After adopting the above structure, the beneficial effects of the utility model are:

[0012] (1) The utility model utilizes the hydraulic output of the tractor. The hydraulic motor on the front central mowing disc drives the mower to rotate and cut the straw in the middle front of the foldable straw returner. The left and right returners at the rear cut the remaining straw respectively, thereby maintaining the same cutting height throughout the entire cutting width.

[0013] (2) The utility model adopts a split mower blade, which does not require adjustment of the gap, has low vibration, stable performance, and can automatically avoid obstacles to prevent damage to the mower blade;

[0014] (3) The front central mowing disc can be folded up during transportation, making the utility model particularly suitable for field operations on rural roads, safe and reliable;

[0015] (4) The utility model is used to adjust the installation height of the front central mowing disc by adjusting the relative position of the adjustment hole, that is, to adjust the straw cutting height (stubble height). BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a front view of the front central mowing disc in the utility model;

[0018] Figure 3 It is a side view of the front central mowing disc of the present invention;

[0019] Figure 4 This is a top view of the front central mowing disc of the present invention;

[0020] Figure 5 for Figure 3 Cross-sectional view of AA;

[0021] Figure 6 This is a schematic structural diagram of the swing arm in the utility model;

[0022] Figure 7 This is a schematic structural diagram of the mounting base in the present utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the knife shaft in the utility model;

[0024] Figure 9 This is a schematic diagram of the position of the transport lock pin installation hole in the present utility model;

[0025] Figure 10 This is a schematic diagram of the position of the adjustment hole in the utility model;

[0026] Figure 11 This is the transportation status diagram of this utility model.

[0027] Description of reference numerals:

[0028] 1 Hydraulic folding suspension assembly, 11 Transport lock pin mounting hole, 2 Front center mowing disc, 21 Fixed frame, 22 Connecting frame, 23 Rear upper connecting shaft, 24 Rear lower connecting shaft, 25 Intermediate adjustment sleeve, 26 Swing arm, 261 Swing arm body, 262 Bushing, 263 Mounting ear, 27 Front upper connecting shaft, 28 Front lower connecting shaft, 29 Mounting seat, 291 Hydraulic motor mounting seat, 292 Connecting seat, 210 Height adjustment sleeve, 211 Floating spring, 212 Hydraulic motor, 213 Hood, 214 Blade shaft, 2141 Drive shaft sleeve, 2142 Mower blade mounting frame, 215 Mower blade, 216 Handrail, 3 Locking pin, 4 Adjustment hole. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] See Figure 1-5A foldable field return machine with a front central mowing disc comprises a hydraulic folding suspension assembly 1, a front central mowing disc 2 is arranged in the middle of the hydraulic folding suspension assembly 1; the front central mowing disc 2 comprises a fixing frame 21, the fixing frame 21 is fixedly connected to the hydraulic folding suspension assembly 1, a connecting frame 22 is arranged at the front end of the fixing frame 21 by bolts, a rear upper connecting shaft 23 and a rear lower connecting shaft 24 are respectively arranged at the upper and lower ends of the connecting frame 22, an intermediate adjustment sleeve 25 is hingedly arranged on the rear upper connecting shaft 23, and the rear lower connecting shaft is hingedly arranged on the upper connecting shaft 23. A swing arm 26 is sleeved onto the connecting shaft 24. The other ends of the middle adjustment sleeve 25 and the swing arm 26 are respectively provided with a mounting seat 29 via a front upper connecting shaft 27 and a front lower connecting shaft 28. A height adjustment sleeve 210 and a floating spring 211 are respectively provided between the left and right ends of the rear upper connecting shaft 23 and the front lower connecting shaft 28. A hydraulic motor 212 is provided on the mounting seat 29, and a machine cover 213 is provided at the bottom of the mounting seat 29. A cutter shaft 214 is provided on the output shaft of the hydraulic motor 212, and a mower blade 215 is provided on the cutter shaft 214. Specifically, by providing a front central mowing disc 2 in the middle of the hydraulic folding suspension assembly 1, and then utilizing the hydraulic output of the tractor, the hydraulic motor 212 on the front central mowing disc drives the mower blade 215 to rotate and cut the straw in the middle and front of the foldable straw returner, while the left and right returners at the rear cut the remaining straw, thereby maintaining a consistent cutting height throughout the entire cutting width. The foldable straw returner is suitable for crushing and returning the straw of wheat, rice, corn, and other crops.

[0032] See Figure 6 、 Figure 9 and Figure 11 The swing arm 26 includes a swing arm body 261, with shaft sleeves 262 provided at the front and rear ends of the swing arm body 261. A pair of lugs 263 are also provided on the swing arm body 261. A pair of transport lock pin mounting holes 11 are provided at the bottom of the hydraulic folding suspension assembly 1. When the farmland harvester is folded for transportation, the lugs 263 are aligned with the transport lock pin mounting holes 11, and then the lock pin 3 is inserted. In the transport state, the lock pin 3 is first removed, the front center mowing disc 2 is raised, and the holes of the lugs 263 on the swing arm 26 are aligned with the transport lock pin mounting holes 11 of the hydraulic folding suspension assembly 1. After that, the lock pin 3 is inserted to fold the front center mowing disc 2. Combined with the folding of the hydraulic folding suspension assembly 1, the farmland harvester is particularly suitable for rural road transfer operations and is safe and reliable.

[0033] See Figure 7 The mounting base 29 includes a hydraulic motor mounting base 291 and a connecting base 292. The hydraulic motor mounting base 291 is used to install the hydraulic motor; the connecting base 292 is used to connect the front upper connecting shaft 27 and the front lower connecting shaft 28.

[0034] See Figure 8The blade shaft 214 includes a drive sleeve 2141, which is in driving connection with the output shaft of the hydraulic motor. A mower blade mounting bracket 2142 is provided at the lower end of the drive sleeve 2141. Mower blades 215 are provided on either side of the mower blade mounting bracket 2142. The left and right mower blades 215 are provided, i.e., a split mower blade design. This design eliminates the need for adjustment of clearance, results in low vibration, and offers stable performance. The mower blades can also automatically avoid obstacles, preventing damage.

[0035] See Figure 3 and Figure 10 Multiple adjustment holes 4 are provided on the mounting bracket 21, and corresponding positions on the hydraulic folding suspension assembly. The relative positions of the adjustment holes 4 are used to adjust the installation height of the front center mowing disc 2. The adjustment holes 4 are arranged in a rectangular pattern, and the upper or lower adjustment holes can be selected based on actual conditions to adjust the installation height of the front center mowing disc 2, thereby adjusting the straw cutting height (stubble height).

[0036] See Figure 2 The left and right sides of the hood 213 are respectively provided with armrests 216. The armrests 216 are convenient for applying force to the entire front central mowing disc 2, and the front central mowing disc 2 is used to be put away after being lifted.

[0037] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A foldable field returner with a front-mounted central mowing disc, comprising a hydraulically foldable suspension assembly, characterized in that: A front central mowing disc is arranged in the middle of the hydraulic folding suspension assembly; the front central mowing disc includes a fixing frame, which is fixedly connected to the hydraulic folding suspension assembly, and a connecting frame is arranged at the front end of the fixing frame by bolts, and a rear upper connecting shaft and a rear lower connecting shaft are respectively arranged at the upper and lower ends of the connecting frame, an intermediate adjustment sleeve is hingedly arranged on the rear upper connecting shaft, a swing arm is sleeved on the rear lower connecting shaft, and the other ends of the intermediate adjustment sleeve and the swing arm are respectively provided with mounting seats through the front upper connecting shaft and the front lower connecting shaft, and a height adjustment sleeve and a floating spring are respectively arranged between the left and right ends of the rear upper connecting shaft and the front lower connecting shaft, a hydraulic motor is arranged on the mounting seat, a machine cover is arranged at the bottom of the mounting seat, a knife shaft is arranged on the output shaft of the hydraulic motor, and a mowing knife is arranged on the knife shaft.

2. A foldable field return machine with a front central mowing disc according to claim 1, characterized in that: The swing arm includes a swing arm body, and shaft sleeves are respectively provided at the front and rear ends of the swing arm body. A pair of hanging ears are also provided on the swing arm body. A pair of transport lock pin mounting holes are provided at the bottom of the hydraulic folding suspension assembly. When the field return machine is folded for transportation, the hanging ears are aligned with the transport lock pin mounting holes, and the lock pins are inserted.

3. The foldable field return machine with a front central mowing disc according to claim 1, characterized in that: The mounting seat includes a hydraulic motor mounting seat and a connecting seat.

4. The foldable field return machine with a front central mowing disc according to claim 1, characterized in that: The cutter shaft includes a transmission sleeve, which is in transmission connection with the output shaft of the hydraulic motor. A mowing blade mounting frame is provided at the lower end of the transmission sleeve, and mowing blades are provided on the left and right sides of the mowing blade mounting frame.

5. The foldable field return machine with a front central mowing disc according to claim 1, characterized in that: A plurality of adjustment holes are provided on the fixing frame, and a plurality of adjustment holes are also provided at corresponding positions of the hydraulic folding suspension assembly, and the installation height of the front central mowing disc is adjusted by the relative positions of the adjustment holes.

6. The foldable field return machine with a front central mowing disc according to claim 1, characterized in that: Armrests are respectively arranged on the left and right sides of the hood.

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