Light and simple wheat harvester suitable for hilly and mountainous areas and use method of light and simple wheat harvester

Abstract

The invention relates to a light and simple wheat harvester suitable for hilly and mountainous areas and a using method thereof.The light and simple wheat harvester comprises a walking trolley, a supporting frame installed at the front end of the walking trolley and a harvesting transverse moving plate transversely connected to the front portion of the supporting frame in a sliding mode, and a harvesting lifting plate is vertically connected to the front portion of the harvesting transverse moving plate in a sliding mode; a harvesting device is arranged at the lower end of the harvesting lifting plate; the harvesting driving mechanism is used for driving the harvesting transverse moving plate to move left and right; the lifting adjusting mechanism is used for driving the harvesting lifting plate to lift and adjust; the supporting frame comprises a fixing frame fixedly connected to the front end of the walking trolley, an extension frame transversely connected to the fixing frame in a sliding mode and an extension driving mechanism for driving the extension frame to extend and adjust towards the left side of the fixing frame, and the harvesting transverse moving plate slides left and right between the right end of the fixing frame and the left end of the extension frame through a transverse moving plate guiding mechanism. Wheat harvesting under complex road conditions such as hilly and mountainous areas and small plot planting conditions can be achieved, the workload of wheat harvesting personnel is reduced, and the wheat harvesting speed is increased.

Description

Technical Field

[0001] The 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 use method thereof. 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 varying wheat planting widths. 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 realized by the following technical scheme, which provides a light and simple wheat harvester suitable for hilly and mountainous areas, comprising a traveling trolley, a support frame installed at the front end of the traveling trolley, and a harvesting transverse shifting 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 shifting plate, a harvesting device is installed at the lower end of the harvesting lifting plate, and also comprises a harvesting driving mechanism for driving the harvesting transverse shifting plate to move left and right, and a lifting adjustment mechanism for driving the harvesting lifting plate to lift and adjust;

[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, a circular blade is installed at the lower end of the blade motor, and a front straw collecting rod and a rear straw collecting rod are fixedly connected to the front end of the base plate, both of which extend to the left side, the left end of the rear straw collecting rod is located behind the left end of the front straw collecting rod, the right end of the rear straw collecting rod is located in front of the right end of the front straw collecting rod, and the right end of the front straw collecting rod is higher than the left end of the front straw collecting rod, and the right end of the front straw collecting rod is higher than the right end of the rear straw collecting rod, and 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, and 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 fixedly connected 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 extension frame and are 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 are 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 frame is slidably connected to the fixed frame through an expansion guide mechanism, and the expansion guide mechanism includes a lower slide rail fixedly connected to the upper end of the expansion frame and an upper slide rail fixedly connected to the upper end of the fixed frame. A lower slide block adapted to the lower slide rail is fixedly connected to the left end of the fixed frame, and an upper slide block adapted to the upper slide rail is fixedly connected to the right end of the expansion frame.

[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 driving motor for driving the driving sprocket to rotate. The circulating chain passes around the driving sprocket, the first sprocket, the second sprocket and the passive sprocket in sequence. 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 fixedly connected to the circulating chain between the first sprocket and the driving sprocket.

[0011] As an optimization, the lifting and lowering adjustment mechanism includes a vertical screw axially connected to the harvesting transverse plate and a lifting and lowering connecting plate fixedly connected to the harvesting lifting plate. The vertical screw is threadedly connected to the lifting and lowering 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 and adjusting mechanism drives the harvesting device on the harvesting lifting plate to rise to prevent the harvesting device from rubbing against the ground, and at the same time, the expansion frame moves to the right into the fixed frame to reduce the volume 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 to the left 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 to make the wheat tilt backward, and then the roots of the wheat are cut off by the circular blade, and the cut wheat falls backward into the storage bucket;

[0017] d. After the containing bucket moves to the left end of the extension frame, it touches the stopper, causing the containing bucket to flip upward and pour out the harvested wheat inside;

[0018] e. After completing the harvesting of a row of wheat, the harvesting device is reset to the right end, and the walking 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 of using the same. When the harvester is traveling on a 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 in hilly and mountainous areas, reducing the workload of wheat harvesting personnel and increasing 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 It is a schematic diagram of the side structure of the present invention without the traveling trolley;

[0022] Figure 3 For the present invention Figure 2 Sectional view of the middle AA plane;

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

[0024] Figure 5 For the present invention Figure 2 Middle BB plane section 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 8It is a front view of the containing bucket during the harvesting process of the present invention;

[0028] Fig. 9 This is a front view of the holding bucket after a row of crops has been harvested;

[0029] As shown in the figure:

[0030] 1. Car 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. Protruding plate, 29. Stop rod, 3. Fixed frame, 31. Crossbeam, 32. Vertical beam, 4. Extension frame, 5. Extension drive mechanism, 51. Transverse 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 a specific implementation method.

[0032] like Figures 1 to 9 As shown, a light and simple wheat harvester suitable for hilly and mountainous areas of the present invention comprises a walking trolley, the walking trolley comprises a body 1, driving wheels 12 installed on both sides of the front end of the body 1, and a universal wheel 13 installed at the rear end of the body 1, a battery 14 is installed on the body 1, and a handle 15 is installed at the rear end of the body 1. The width of the body 1 is within 1.5 meters, so as to adapt to walking on the small roads in hilly and mountainous areas, the driving wheels 12 on both sides are driven by motors to achieve walking, the universal wheel 13 at the rear is installed in the middle position of the rear end of the body 1, and plays a role in steering, the battery provides power for the entire harvester, and the user holds the handle to control the harvester during operation, and switches for controlling each motor are installed on the handle.

[0033] It also includes a support frame installed at the front end of the walking trolley and a harvesting transverse sliding plate 10 that is laterally slidably connected to the front of the support frame. A harvesting lifting plate 11 is vertically slidably connected to the front of the harvesting transverse sliding plate 10. A harvesting device 2 is installed at the lower end of the harvesting lifting plate 11. 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 meet different wheat harvesting requirements.

[0034] The harvesting lifting plate 11 realizes vertical sliding connection and guidance with the harvesting transverse plate 10 through a slide rail and a slider, and also includes a lifting adjustment mechanism 9 for driving the harvesting lifting plate to lift and lower. The lifting adjustment mechanism 9 includes a vertical screw rod 91 axially connected to the harvesting transverse plate 10 and a lifting connection plate 92 fixed to the harvesting lifting plate 11. The vertical screw rod 91 is threadedly connected to the lifting connection plate 92, and a lifting hand wheel 93 is installed at the upper end of the vertical screw rod 91. The vertical screw rod 91 is rotated by the lifting hand wheel 93, so that the lifting connection plate 92 drives the harvesting lifting plate 11 to lift and lower.

[0035] The harvesting device 2 includes 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. 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 with a front straw collecting rod 26 and a rear straw collecting rod 27 both extending to the left. Figure 6 The upper part of the picture 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, and 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, and the harvesting device 2 moves to the left. When the wheat is moved to the left, the wheat between the left end of the front straw collecting rod 26 and the left end of the rear straw collecting rod 27 is introduced therein. As the leftward movement continues, 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, and the upper end of the 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 upwards, so that the wheat inside can be poured out to the left, and the containing bucket 22 is supported on the bottom plate 21 after being reset.

[0039] A stop rod 29 is fixedly connected 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 stop rod 29, so that after completing the harvesting of a row of wheat, the wheat in the containing bucket 22 is poured to the left side of the harvester.

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

[0041] The support frame includes a fixed frame 3 fixedly connected 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. 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 cross beams 31 and a plurality of vertical beams 32 connecting the two cross beams 31. The expansion drive mechanism 5 includes a transverse screw 51 axially connected to the fixed frame 3 and an expansion connecting plate 52 fixed to the expansion frame 4. The transverse screw 51 is arranged transversely and its two ends are respectively 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 hand wheel 53. The transverse screw 51 is rotated by the expansion hand wheel 53 to realize the left and right movement adjustment of the expansion frame 4 driven by the expansion connecting plate 52. At the same time, the transverse screw 51 can also play a guiding and limiting role for the expansion frame 4 to prevent it from shaking up and down and forward and backward.

[0043] The expansion rack 4 is slidably connected to the fixed rack 3 through an expansion guide mechanism 8, and the expansion guide mechanism 8 includes a lower slide rail 83 fixed to the upper end of the expansion rack 4 and an upper slide rail 81 fixed to the upper end of the fixed rack 3. A lower slider 84 adapted to the lower slide rail 83 is fixed to the left end of the fixed rack 3, and an upper slider 82 adapted to the upper slide rail 81 is fixed to the right end of the expansion rack 4. The lower slide rail 83 and the upper slide rail 81 both extend left and right, so that the expansion rack 4 is guided left and right by the lower slide rail 83 and the upper slide rail 81, and the expansion rack 4 is fixed in combination with the transverse screw 51.

[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 shifting plate 10 from the right end of the fixed frame 3 to the left end of the expansion frame 4, the harvesting transverse shifting plate 10 described 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 shifting plate guide mechanism 7.

[0045] like Figure 2 , 5 As shown, 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 rotatably connected to the rear of the harvesting transverse plate 10. The guide wheels 71 are double-sided groove wheels, so a wheel groove is provided in the middle. The expansion frame 4 is fixedly connected with two inner guide strips 73 inserted into the two guide wheels 71 from between the two guide wheels 71, and the fixed frame 3 is fixedly connected with two outer guide strips 72 inserted into the two guide wheels 71 from the outside of the two guide wheels 71.

[0046] When the expansion frame 4 is extended to a certain length, the harvesting transverse moving plate 10 is located at the rightmost end, and the two guide wheels 71 are stuck between the two outer guide strips 72 to achieve the guidance of the harvesting transverse moving plate 10; when the harvesting transverse moving plate 10 moves a certain distance to the left, the two guide wheels 71 are stuck between the two outer guide strips 72, and at the same time, the guide wheels 71 are also stuck on the outside of the two inner guide strips 73, thereby jointly achieving guidance; when the harvesting transverse moving plate 10 is located at the leftmost end, the guide wheels 71 are stuck on the outside of the two inner guide strips 73 to achieve the guidance of the harvesting transverse moving plate 10, so that the harvesting transverse moving plate 10 can achieve the guiding effect throughout the whole 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 at the right end of the fixed frame 3, a passive sprocket 65 installed at the left end of the fixed frame 3, a first sprocket 64 installed at the left end of the expansion frame 4, a second sprocket 66 installed at the right end of the expansion frame 4, and a driving 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 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, so 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 transverse shifting 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 transverse shifting plate 10 is driven to move left and right through 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 traveling on the road, the lifting and adjusting 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, and at the same time, the expansion frame 4 moves rightward into the fixed frame 3 to reduce the volume 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 to make the wheat tilt 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 holding bucket 22; d. After the holding bucket 22 moves to the left end position of the expansion frame 4, it touches the blocking rod 29, so that the holding bucket 22 is turned upward to 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 trolley moves forward the distance of a row of wheat, thereby continuing to harvest.

[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 using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme 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 shifting plate (10) slidably connected to the front of the support frame in a transverse manner, a harvesting lifting plate (11) is vertically slidably connected to the front of the harvesting transverse shifting plate (10), a harvesting device (2) is installed at the lower end of the harvesting lifting plate (11), and also comprises a harvesting driving mechanism (6) for driving the harvesting transverse shifting plate (10) to move left and right, and a lifting adjustment mechanism (9) for driving the harvesting lifting plate to be lifted and lowered; The harvesting device (2) comprises a horizontal bottom 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 bottom plate (21), wherein a circular blade (25) is installed at the lower end of the blade motor (24), and a front harvesting rod (26) and a rear harvesting rod (27) both extending to the left are fixedly connected to the front end of the bottom plate (21), 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 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. When the harvesting lifting plate (11) moves to the left end, the holding bucket (22) is flipped upwards under the blocking of the blocking rod (29).

2. A light and simple wheat harvester suitable for hilly and mountainous areas according to claim 1, characterized in that: The support frame comprises a fixed frame (3) fixedly connected 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); 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).

3. A light and simple wheat harvester suitable for hilly and mountainous areas according to claim 2, characterized in that: The transverse plate guide mechanism (7) comprises guide wheels (71) mounted at the upper and lower ends of the harvesting transverse plate (10), wherein the guide wheels (71) are double-sided groove wheels, and 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), and 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 of the two guide wheels (71).

4. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 2, characterized in that: The expansion drive mechanism (5) comprises a transverse screw rod (51) axially connected to the fixed frame (3) and an expansion connecting plate (52) fixedly connected to the expansion frame (4); the transverse screw rod (51) is threadedly connected to the expansion connecting plate (52); and an expansion hand wheel (53) is mounted at the right end of the transverse screw rod (51).

5. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 2, characterized in that: The expansion frame (4) is slidably connected to the fixed frame (3) via an expansion guide mechanism (8), the expansion guide mechanism (8) comprising a lower slide rail (83) fixedly connected to the upper end of the expansion frame (4) and an upper slide rail (81) fixedly connected to the upper end of the fixed frame (3), a lower slide block (84) adapted to the lower slide rail (83) fixedly connected to the left end of the fixed frame (3), and an upper slide block (82) adapted to the upper slide rail (81) fixedly connected to the right end of the expansion frame (4).

6. The light and simple wheat harvester suitable for hilly and mountainous areas according to claim 2, 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; a 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); the upper end of the second sprocket (66) is flush with the lower end of the passive sprocket (65); and a driving connecting rod (62) connected to the harvesting transverse shift plate (10) is fixedly connected to the circulating chain (67) between the first sprocket (64) and the driving sprocket (63).

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

8. 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 universal wheels (13) mounted on the rear end of the vehicle body (1); a storage battery (14) is mounted on the vehicle body (1), and a handle (15) is mounted on the rear end of the vehicle body (1).

9. A method for using the light and simple wheat harvester according to any one of claims 2 to 6, 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 to prevent 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 left end of the front harvesting rod (26) to the left into the area adjacent to the wheat. 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 containing bucket (22) moves to the left end of the expansion frame (4), it touches the stopper (29), causing the containing bucket (22) to flip upwards 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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