A light and simple wheat harvester suitable for hilly and mountainous areas and its use method

Abstract

The present invention relates to a light and simple wheat harvester suitable for hilly and mountainous areas and a method for using the same, comprising a walking trolley, a support frame installed at the front end of the walking trolley and a harvesting transverse sliding plate slidingly connected to the front of the support frame, a harvesting lifting plate slidingly connected vertically in front of the harvesting transverse sliding plate, a harvesting device being installed at the lower end of the harvesting lifting plate, and also comprising a harvesting driving mechanism for driving the harvesting transverse sliding plate to move left and right and a lifting adjustment mechanism for driving the harvesting lifting plate to lift and adjust; the support frame comprises a fixed frame fixedly connected to the front end of the walking trolley, an extension frame slidingly connected to the fixed frame and an extension driving mechanism for driving the extension frame to expand and adjust to the left side of the fixed frame, the harvesting transverse sliding plate sliding left and right between the right end of the fixed frame and the left end of the extension frame through the transverse sliding plate guide mechanism, the present invention can realize wheat harvesting under complex road conditions and small plot planting conditions such as hilly and mountainous areas, reduces the workload of wheat harvesters and improves the wheat harvesting speed.

Description

Technical Field

[0001] The present invention relates to the technical field of wheat harvesting, and in particular to a light and simple wheat harvester suitable for hilly and mountainous areas and a method for using the same. Background Art

[0002] my country's southwestern winter wheat areas are mostly hilly and mountainous areas, with scattered and sloping plots, poor road conditions, and wheat planting widths of varying sizes. The problem of "machines not suitable for the land" is relatively prominent, so existing large-scale wheat harvesters cannot be used. Many wheat harvests are still harvested manually, which requires bending over with a sickle. Harvesting is labor-intensive and does great harm to the body. Although there are lightweight wheat harvesters on the domestic market, most of them are not suitable for the complex road conditions in hilly areas, and more research is needed. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a light and simple wheat harvester suitable for hilly and mountainous areas and a method for using the same.

[0004] The present invention is achieved through the following technical solutions, providing a light and simple wheat harvester suitable for hilly and mountainous areas, comprising a traveling trolley, a support frame mounted at the front end of the traveling trolley, and a harvesting transverse plate slidably connected to the front of the support frame. A harvesting lifting plate is vertically slidably connected to the front of the harvesting transverse plate. A harvesting device is installed at the lower end of the harvesting lifting plate. The harvesting drive mechanism also includes a harvesting drive mechanism for driving the harvesting transverse plate to move left and right, and a lifting adjustment mechanism for driving the harvesting lifting plate to move up and down.

[0005] The harvesting device includes a horizontal base plate fixedly connected to the lower end of the harvesting lifting plate and a blade motor installed at the front end of the base plate, the lower end of the blade motor is equipped with a circular blade, and the front end of the base plate is fixedly connected to a front harvesting rod and a rear harvesting rod, both of which extend to the left side, the left end of the rear harvesting rod is located behind the left end of the front harvesting rod, the right end of the rear harvesting rod is located in front of the right end of the front harvesting rod, and the right end of the front harvesting rod is higher than the left end of the front harvesting rod, and the right end of the front harvesting rod is higher than the right end of the front harvesting rod. A holding bucket is provided above the base plate, and the upper end of the left end of the holding bucket is hinged to the harvesting lifting plate, and a blocking rod is fixed to the left end of the support frame. When the harvesting lifting plate moves to the left end, the holding bucket flips upward under the obstruction of the blocking rod.

[0006] As an optimization, the support frame includes a fixed frame fixed to the front end of the walking trolley, an extension frame laterally slidably connected to the fixed frame, and an extension drive mechanism for driving the extension frame to expand and adjust to the left side of the fixed frame. The harvesting transverse plate slides left and right between the right end of the fixed frame and the left end of the extension frame through the transverse plate guide mechanism.

[0007] As an optimization, the transverse plate guide mechanism includes guide wheels installed at the upper and lower ends of the harvesting transverse plate, the guide wheels are double-sided groove wheels, two inner guide strips are fixedly connected to the expansion frame and inserted into the two guide wheels from between the two guide wheels, and two outer guide strips are fixedly connected to the fixed frame and inserted into the two guide wheels from the outside of the two guide wheels.

[0008] As an optimization, the expansion drive mechanism includes a transverse screw axially connected to the fixed frame and an expansion connecting plate fixed to the expansion frame. The transverse screw is threadedly connected to the expansion connecting plate, and an expansion handwheel is installed at the right end of the transverse screw.

[0009] As an optimization, the expansion rack is slidably connected to the fixed rack through an expansion guide mechanism. The expansion guide mechanism includes a lower slide rail fixed to the upper end of the expansion rack and an upper slide rail fixed to the upper end of the fixed rack. The left end of the fixed rack is fixed with a lower slider adapted to the lower slide rail, and the right end of the expansion rack is fixed with an upper slider adapted to the upper slide rail.

[0010] As an optimization, the harvesting drive mechanism includes a driving sprocket installed at the right end of the fixed frame, a passive sprocket installed at the left end of the fixed frame, a first sprocket installed at the left end of the expansion frame, a second sprocket installed at the right end of the expansion frame, and a drive motor that drives the driving sprocket to rotate. The circulating chain passes around the driving sprocket, the first sprocket, the second sprocket and the passive sprocket in turn. The lower end of the first sprocket is flush with the lower end of the driving sprocket, the upper end of the first sprocket is flush with the lower end of the second sprocket, and the upper end of the second sprocket is flush with the lower end of the passive sprocket. A driving connecting rod connected to the harvesting transverse plate is fixed to the circulating chain between the first sprocket and the driving sprocket.

[0011] As an optimization, the lifting and adjusting mechanism includes a vertical screw axially connected to the harvesting transverse plate and a lifting connecting plate fixed to the harvesting lifting plate. The vertical screw is threadedly connected to the lifting connecting plate, and a lifting handwheel is installed at the upper end of the vertical screw.

[0012] As an optimization, the walking trolley includes a body, driving wheels installed on both sides of the front end of the body and universal wheels installed at the rear end of the body. The body is equipped with a battery and the rear end of the body is equipped with a handle.

[0013] A method for using a light and simple wheat harvester comprises the following steps:

[0014] a. When the harvester is moving on the road, the lifting adjustment mechanism drives the harvesting device on the harvesting lifting plate to rise to prevent the harvesting device from rubbing against the ground. At the same time, the expansion frame moves to the right into the fixed frame to reduce the size of the harvester;

[0015] b. After reaching the harvesting position, the expansion frame extends to the left so that the width of the entire support frame is consistent with the width of the wheat to be harvested;

[0016] c. The harvesting drive mechanism drives the harvesting device to move from the right end of the fixed frame to the left, and inserts the left end of the front harvesting bar into the adjacent wheat area. As the front harvesting bar continues to move to the left, the contact position between the front harvesting bar and the wheat moves upward, and at the same time, the wheat is pushed backward, causing the wheat to tilt backward. The roots of the wheat are then cut off by the circular blade, and the cut wheat is poured backward into the storage bucket;

[0017] d. After the bucket moves to the left end of the expansion rack, it touches the stop lever, causing the bucket to flip upward and pour out the harvested wheat;

[0018] e. After completing the harvesting of a row of wheat, the harvesting device is reset to the right end, and the traveling trolley moves forward the distance of a row of wheat to continue harvesting.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a light and simple wheat harvester suitable for hilly and mountainous areas and a method for using the same. When the harvester is traveling on the road, the harvesting device on the harvesting lifting plate is driven to rise by the lifting and lowering adjustment mechanism to prevent the harvesting device from rubbing against the ground. At the same time, the expansion frame is moved to the right into the fixed frame to reduce the volume of the harvester. After reaching the harvesting position, the expansion frame is extended to the left to make the width of the entire support frame consistent with the width of the wheat to be harvested, thereby realizing wheat harvesting under complex road conditions and small plot planting conditions such as hilly and mountainous areas, reducing the workload of wheat harvesters and improving the wheat harvesting speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the side structure of the present invention;

[0021] Figure 2 This is a side structural diagram of the present invention without the traveling trolley;

[0022] Figure 3 For the present invention Figure 2 Middle AA plane section view;

[0023] Figure 4 The expansion rack of the present invention is in the extended state Figure 2 Middle AA plane section view;

[0024] Figure 5 For the present invention Figure 2 Middle BB plane cross-sectional view;

[0025] Figure 6 For the present invention Figure 2 Middle C-direction view;

[0026] Figure 7 For the present invention Figure 2 Middle DD section view;

[0027] Figure 8This is a front view of the holding bucket during the harvesting process of the present invention;

[0028] Figure 9 This is a front view of the holding bucket after harvesting a row of crops according to the present invention;

[0029] As shown in the figure:

[0030] 1. Vehicle body, 2. Harvesting device, 21. Bottom plate, 22. Container, 23. Mounting plate, 24. Blade motor, 25. Circular blade, 26. Front straw, 27. Rear straw, 28. Projecting plate, 29. Stop bar, 3. Fixed frame, 31. Crossbeam, 32. Vertical beam, 4. Extension frame, 5. Extension drive mechanism, 51. Horizontal screw, 52. Extension connecting plate, 53. Extension hand wheel, 6. Harvesting drive mechanism, 61. Drive motor, 62. Drive connecting rod, 63. Active sprocket, 64. First chain Wheel, 65, passive sprocket, 66, second sprocket, 67, circulating chain, 7, transverse plate guide mechanism, 71, guide wheel, 72, outer guide bar, 73, inner guide bar, 8, extension guide mechanism, 81, upper slide rail, 82, upper slider, 83, lower slide rail, 84, lower slider, 9, lifting adjustment mechanism, 91, vertical screw, 92, lifting connecting plate, 93, lifting handwheel, 10, harvesting transverse plate, 11, harvesting lifting plate, 12, driving wheel, 13, universal wheel, 14, battery, 15, handle. DETAILED DESCRIPTION

[0031] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0032] like Figures 1 to 9 As shown, the present invention discloses a lightweight wheat harvester suitable for hilly and mountainous areas, comprising a walking carriage, the walking carriage comprising a body 1, drive wheels 12 mounted on both sides of the front end of the body 1, and universal wheels 13 mounted at the rear end of the body 1. The body 1 is equipped with a battery 14, and a handle 15 is mounted at the rear end of the body 1. The width of the body 1 is within 1.5 meters, thereby adapting to traveling on small paths in hilly and mountainous areas. The drive wheels 12 on both sides are driven by motors to achieve travel, and the rear universal wheel 13 is mounted in the middle of the rear end of the body 1 to provide steering. The battery provides power for the entire harvester, and the user controls the harvester by holding the handle during operation. The handle is equipped with switches for controlling each motor.

[0033] It also includes a support frame installed at the front end of the walking trolley and a harvesting transverse sliding plate 10 that slides laterally in front of the support frame. A harvesting lifting plate 11 is vertically slid in front of the harvesting transverse sliding plate 10. The lower end of the harvesting lifting plate 11 is equipped with a harvesting device 2. The harvesting of a row of wheat is achieved by moving the harvesting transverse sliding plate 10 from right to left. The harvesting lifting plate 11 can be adjusted up and down in height, so that it rises when the harvester is walking on the road to prevent scratching the ground. At the same time, the height of the harvesting device 2 can be adjusted to adapt to different wheat harvesting requirements.

[0034] The harvesting lift plate 11 is vertically guided by sliding rails and sliders to the harvesting transverse plate 10. It also includes a lifting adjustment mechanism 9 that drives the harvesting lift plate to rise and fall. The lifting adjustment mechanism 9 includes a vertical screw 91 axially connected to the harvesting transverse plate 10 and a lifting connecting plate 92 fixed to the harvesting lift plate 11. The vertical screw 91 is threadedly connected to the lifting connecting plate 92, and a lifting handwheel 93 is installed at the upper end of the vertical screw 91. The lifting handwheel 93 rotates the vertical screw 91, thereby achieving the lifting and adjusting operation of the harvesting lift plate 11 driven by the lifting connecting plate 92.

[0035] The harvesting device 2 includes a horizontal base plate 21 fixed to the lower end of the harvesting lifting plate 11 and a blade motor 24 installed at the front end of the base plate 21. The rear end of the base plate 21 is welded to the front end surface of the lower end of the harvesting lifting plate 11. A vertical mounting plate 23 is welded to the right end of the front end of the base plate 21. The blade motor 24 is vertically mounted on the mounting plate 23. A circular blade 25 is installed at the lower end of the blade motor 24. The wheat roots are cut off by the rotation of the circular blade 25.

[0036] like Figure 6 As shown, the front end of the bottom plate 21 is fixedly connected to a front straw collecting rod 26 and a rear straw collecting rod 27, both extending to the left. Figure 6 The upper part is the left side of the harvester. When the harvester is harvesting, Figure 6 The middle part is moved upward in the figure.

[0037] The right end of the front straw collecting rod 26 and the right end of the rear straw collecting rod 27 are both connected to the mounting plate 23, and the left end of the front straw collecting rod 26 and the left end of the rear straw collecting rod 27 are both ball-shaped. The left end of the rear straw collecting rod 27 is located behind the left end of the front straw collecting rod 26, and the right end of the rear straw collecting rod 27 is located in front of the right end of the front straw collecting rod 26, and the right end of the front straw collecting rod 26 is higher than the left end of the front straw collecting rod 26, and the right end of the front straw collecting rod 26 is higher than the right end of the rear straw collecting rod 27. The harvesting device 2 moves to the left. When the wheat is between the left end of the front straw collecting rod 26 and the left end of the rear straw collecting rod 27, it is introduced into it. As it continues to move to the left, the wheat moves to the right relative to the front straw collecting rod 26 and the rear straw collecting rod 27. Since the right end of the rear straw collecting rod 27 is located in front of the right end of the front straw collecting rod 26, the wheat is bent backward. The circular blade 25 is located in the gap between the right end of the rear straw collecting rod 27 and the right end of the front straw collecting rod 26, thereby cutting the wheat that has been bent here, causing the cut wheat to fall backward.

[0038] A holding bucket 22 is provided above the bottom plate 21, into which the cut wheat is poured. The upper left end of the holding bucket 22 is hinged to the harvesting lifting plate 11. Figure 7-9 As shown, the right end of the containing bucket 22 can be turned upward to pour the wheat inside to the left, and the containing bucket 22 is supported on the bottom plate 21 after being reset.

[0039] A blocking rod 29 is fixed to the left end of the support frame. When the harvesting lifting plate 11 moves to the left end, the containing bucket 22 is flipped upward under the obstruction of the blocking rod 29, so that after completing the harvesting of a row of wheat, the wheat in the containing bucket 22 is poured onto the left side of the harvester.

[0040] In order to improve the turning effect, a protruding plate 28 is welded on the side of the hopper 22 close to the blocking rod 29, thereby increasing the turning angle and facilitating the pouring of wheat. Figure 9 This is the state diagram of the wheat being poured out. The poured out wheat can be manually baled and collected.

[0041] The support frame includes a fixed frame 3 fixed to the front end of the walking trolley, an expansion frame 4 slidingly connected to the fixed frame 3, and an expansion drive mechanism 5 that drives the expansion frame 4 to expand and adjust to the left side of the fixed frame 3. The width of the fixed frame 3 is consistent with the width of the vehicle body 1. Therefore, when the expansion frame 4 is retracted to the right into the fixed frame 3, the volume of the harvester can be reduced.

[0042] The fixed frame 3 includes two upper and lower transverse beams 31 and a plurality of vertical beams 32 connecting the two transverse beams 31. The expansion drive mechanism 5 includes a transverse screw 51 pivotally connected to the fixed frame 3 and an expansion connecting plate 52 fixed to the expansion frame 4. The transverse screw 51 is arranged horizontally and its two ends are rotatably connected to the two outermost vertical beams 32 of the fixed frame 3. The transverse screw 51 is threadedly connected to the expansion connecting plate 52. The right end of the transverse screw 51 is equipped with an expansion handwheel 53. Rotating the transverse screw 51 by the expansion handwheel 53 enables the expansion connecting plate 52 to drive the left and right movement of the expansion frame 4. The transverse screw 51 also serves as a guide and limiter for the expansion frame 4, preventing it from shaking up and down or forward and backward.

[0043] The expansion rack 4 is slidably connected to the fixed rack 3 via an expansion guide mechanism 8. The expansion guide mechanism 8 includes a lower rail 83 fixed to the upper end of the expansion rack 4 and an upper rail 81 fixed to the upper end of the fixed rack 3. A lower slider 84 is fixed to the left end of the fixed rack 3, which is adapted to the lower rail 83. An upper slider 82 is fixed to the right end of the expansion rack 4, which is adapted to the upper rail 81. The lower rail 83 and the upper rail 81 both extend left and right, thereby guiding the expansion rack 4 left and right. Together with the transverse screw 51, the expansion rack 4 is secured.

[0044] Since the support frame includes a fixed frame 3 and an expansion frame 4, in order to realize the left and right sliding of the harvesting transverse plate 10 from the right end of the fixed frame 3 to the left end of the expansion frame 4, the harvesting transverse plate 10 in this embodiment slides left and right between the right end of the fixed frame 3 and the left end of the expansion frame 4 through the transverse plate guide mechanism 7.

[0045] like Figure 2 、 5 As shown, the transverse plate guide mechanism 7 includes guide wheels 71 mounted at the upper and lower ends of the harvesting transverse plate 10. The guide wheels 71 are rotatably connected to the rear of the harvesting transverse plate 10. The guide wheels 71 are double-sided grooved wheels, and therefore have a wheel groove in the middle. Two inner guide bars 73 are fixedly connected to the expansion frame 4 and inserted into the two guide wheels 71 from between them. Two outer guide bars 72 are fixedly connected to the fixed frame 3 and inserted into the two guide wheels 71 from the outside of them.

[0046] When the expansion frame 4 is extended to a certain length, the harvesting transverse plate 10 is located at the rightmost end, and the two guide wheels 71 are stuck between the two outer guide bars 72 to achieve the guidance of the harvesting transverse plate 10; when the harvesting transverse plate 10 moves a certain distance to the left, the two guide wheels 71 are stuck between the two outer guide bars 72, and at the same time the guide wheels 71 are also stuck on the outside of the two inner guide bars 73, thereby jointly achieving guidance; when the harvesting transverse plate 10 is located at the leftmost end, the guide wheels 71 are stuck on the outside of the two inner guide bars 73 to achieve the guidance of the harvesting transverse plate 10, so that the harvesting transverse plate 10 can achieve the guidance effect throughout the entire process.

[0047] like Figure 2-4 As shown, the harvesting drive mechanism 6 is also included to drive the harvesting transverse plate 10 to move left and right. The harvesting drive mechanism 6 includes a driving sprocket 63 installed on the right end of the fixed frame 3, a driven sprocket 65 installed on the left end of the fixed frame 3, a first sprocket 64 installed on the left end of the expansion frame 4, a second sprocket 66 installed on the right end of the expansion frame 4, and a drive motor 61 that drives the driving sprocket 63 to rotate. Figure 3 、 4 As shown, the endless chain 67 passes around the driving sprocket 63, the first sprocket 64, the second sprocket 66 and the driven sprocket 65 in sequence. The lower end of the first sprocket 64 is flush with the lower end of the driving sprocket 63, the upper end of the first sprocket 64 is flush with the lower end of the second sprocket 66, and the upper end of the second sprocket 66 is flush with the lower end of the driven sprocket 65. Therefore, when the expansion rack 4 moves left and right, the endless chain can engage with the four sprockets.

[0048] A driving link 62 connected to the harvesting traverse plate 10 is fixedly connected to the circulating chain 67 between the first sprocket 64 and the driving sprocket 63. Therefore, when the driving sprocket 63 drives the circulating chain 67 to move, the harvesting traverse plate 10 is moved left and right by the driving link 62.

[0049] A method for using a light and simple wheat harvester comprises the following steps:

[0050] a. When the harvester is moving on the road, the lifting adjustment mechanism 9 drives the harvesting device 2 on the harvesting lifting plate to rise to prevent the harvesting device 2 from rubbing against the ground. At the same time, the expansion frame 4 moves to the right into the fixed frame 3 to reduce the size of the harvester;

[0051] b. After reaching the harvesting position, the expansion frame 4 extends to the left so that the width of the entire support frame is consistent with the width of the wheat to be harvested;

[0052] c. The harvesting drive mechanism 6 drives the harvesting device 2 to move leftward from the right end of the fixed frame 3, and inserts the left end of the front harvesting rod 26 into the adjacent wheat area. As the front harvesting rod 26 continues to move leftward, the contact position between the front harvesting rod 26 and the wheat moves upward, and at the same time, the wheat is pushed backward, causing the wheat to tilt backward. The roots of the wheat are then cut off by the circular blade 25, and the cut wheat is poured backward into the holding bucket 22. d. After the holding bucket 22 moves to the left end position of the expansion frame 4, it touches the stop rod 29, causing the holding bucket 22 to flip upward and pour out the harvested wheat inside.

[0053] e. After completing the harvesting of a row of wheat, the harvesting device 2 is reset to the right end, and the traveling carriage moves forward the distance of a row of wheat to continue harvesting.

[0054] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by adopting existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A light and simple wheat harvester suitable for hilly and mountainous areas, characterized by: The utility model comprises a traveling trolley, a support frame installed at the front end of the traveling trolley, and a harvesting transverse moving plate (10) slidingly connected to the front of the support frame, a harvesting lifting plate (11) slidingly connected vertically in front of the harvesting transverse moving plate (10), a harvesting device (2) being installed at the lower end of the harvesting lifting plate (11), and a harvesting driving mechanism (6) for driving the harvesting transverse moving plate (10) to move left and right, and a lifting adjustment mechanism (9) for driving the harvesting lifting plate to move up and down; The harvesting device (2) comprises a horizontal base plate (21) fixedly connected to the lower end of the harvesting lifting plate (11) and a blade motor (24) installed at the front end of the base plate (21), wherein the lower end of the blade motor (24) is provided with a circular blade (25), and the front end of the base plate (21) is fixedly connected to a front harvesting rod (26) and a rear harvesting rod (27) both extending to the left side, wherein the left end of the rear harvesting rod (27) is located behind the left end of the front harvesting rod (26), and the right end of the rear harvesting rod (27) is located behind the left end of the front harvesting rod (26), and the right end of the front harvesting rod (26) is higher than the left end of the front harvesting rod (26), and the right end of the front harvesting rod (26) is higher than the right end of the rear harvesting rod (27), a holding bucket (22) is provided above the bottom plate (21), the upper end of the left end of the holding bucket (22) is hinged to the harvesting lifting plate (11), and a blocking rod (29) is fixed to the left end of the support frame, and when the harvesting lifting plate (11) moves to the left end, the holding bucket (22) flips upward under the blocking of the blocking rod (29); The support frame includes a fixed frame (3) fixed to the front end of the walking trolley, an expansion frame (4) laterally slidably connected to the fixed frame (3), and an expansion drive mechanism (5) for driving the expansion frame (4) to expand and adjust to the left side of the fixed frame (3), and the harvesting transverse plate (10) slides left and right between the right end of the fixed frame (3) and the left end of the expansion frame (4) through the transverse plate guide mechanism (7).

2. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 1, characterized in that: The transverse plate guide mechanism (7) includes guide wheels (71) installed at the upper and lower ends of the harvesting transverse plate (10), and the guide wheels (71) are double-sided groove wheels. Two inner guide strips (73) are fixedly connected to the expansion frame (4) and are inserted into the two guide wheels (71) from between the two guide wheels (71). Two outer guide strips (72) are fixedly connected to the fixed frame (3) and are inserted into the two guide wheels (71) from the outside.

3. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 1, characterized in that: The expansion drive mechanism (5) comprises a transverse screw (51) axially connected to the fixed frame (3) and an expansion connecting plate (52) fixed to the expansion frame (4), wherein the transverse screw (51) is threadedly connected to the expansion connecting plate (52), and an expansion hand wheel (53) is installed at the right end of the transverse screw (51).

4. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 1, characterized in that: The expansion frame (4) is slidably connected to the fixed frame (3) through an expansion guide mechanism (8), wherein the expansion guide mechanism (8) comprises a lower slide rail (83) fixed to the upper end of the expansion frame (4) and an upper slide rail (81) fixed to the upper end of the fixed frame (3), a lower slider (84) adapted to the lower slide rail (83) is fixed to the left end of the fixed frame (3), and an upper slider (82) adapted to the upper slide rail (81) is fixed to the right end of the expansion frame (4).

5. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 1, characterized in that: The harvesting drive mechanism (6) comprises a driving sprocket (63) mounted on the right end of the fixed frame (3), a passive sprocket (65) mounted on the left end of the fixed frame (3), a first sprocket (64) mounted on the left end of the expansion frame (4), a second sprocket (66) mounted on the right end of the expansion frame (4), and a driving motor (61) for driving the driving sprocket (63) to rotate. The circulating chain (67) passes through the driving sprocket (63), the first sprocket (64), the second sprocket (66) and the passive sprocket (65) in sequence. The lower end of the first sprocket (64) is flush with the lower end of the driving sprocket (63), the upper end of the first sprocket (64) is flush with the lower end of the second sprocket (66), and the upper end of the second sprocket (66) is flush with the lower end of the passive sprocket (65). A driving connecting rod (62) connected to the harvesting transverse plate (10) is fixed to the circulating chain (67) between the first sprocket (64) and the driving sprocket (63).

6. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 1, characterized in that: The lifting adjustment mechanism (9) comprises a vertical screw (91) axially connected to the harvesting transverse plate (10) and a lifting connecting plate (92) fixed to the harvesting lifting plate (11), wherein the vertical screw (91) is threadedly connected to the lifting connecting plate (92), and a lifting hand wheel (93) is installed at the upper end of the vertical screw (91).

7. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 1, characterized in that: The walking trolley comprises a vehicle body (1), driving wheels (12) mounted on both sides of the front end of the vehicle body (1), and a universal wheel (13) mounted on the rear end of the vehicle body (1); a battery (14) is mounted on the vehicle body (1), and a handle (15) is mounted on the rear end of the vehicle body (1).

8. A method for using the light wheat harvester according to any one of claims 1 to 5, characterized in that: The steps include: a. When the harvester is traveling on the road, the lifting and adjusting mechanism (9) drives the harvesting device (2) on the harvesting lifting plate to rise, thereby preventing the harvesting device (2) from rubbing against the ground, and at the same time, the expansion frame (4) moves rightward into the fixed frame (3) to reduce the volume of the harvester; b. After reaching the harvesting position, the expansion frame (4) extends to the left so that the width of the entire support frame is consistent with the width of the wheat to be harvested; c. The harvesting drive mechanism (6) drives the harvesting device (2) to move from the right end of the fixed frame (3) to the left, and inserts the harvesting device (2) into the adjacent wheat area by moving the left end of the front harvesting rod (26) to the left. As the front harvesting rod (26) continues to move to the left, the contact position between the front harvesting rod (26) and the wheat moves upward, and at the same time, the wheat is pushed backward, so that the wheat tilts backward, and then the roots of the wheat are cut off by the circular blade (25), and the cut wheat is poured backward into the storage bucket (22); d. After the holding bucket (22) moves to the left end position of the expansion frame (4), it touches the stopper (29), causing the holding bucket (22) to flip upward and pour out the harvested wheat inside; e. After completing the harvesting of a row of wheat, the harvesting device (2) is reset to the right end, and the traveling trolley moves forward by the distance of a row of wheat, thereby continuing the harvesting.

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