Self-propelled Chinese cabbage harvester

Abstract

The application discloses a self-propelled Chinese cabbage harvester, which comprises a moving body and a harvesting table installed at the front of the moving body; the harvesting table comprises a rack, and a clamping and lifting device, a cutting device, a pulling mechanism and a power system are installed on the rack; the clamping and lifting device comprises two groups of symmetrically-arranged wide clamping components; the harvesting table further comprises an upper clamping mechanism and a lower clamping mechanism; the upper clamping mechanism is located above the front end of the clamping and lifting device, and the lower clamping mechanism is located on the lower side of the clamping and lifting device; the front ends of the upper clamping mechanism and the lower clamping mechanism both extend to the front end of the clamping and lifting device; the pulling mechanism comprises two pulling wheels located at the front end of the lower clamping mechanism. In the application, the upper clamping mechanism and the lower clamping mechanism are arranged, and a pulling device is arranged to assist in pulling out the Chinese cabbage; in the pulling stage and the stage of entering the clamping and lifting device, the upper and lower sides of the Chinese cabbage are clamped, so that the posture of the Chinese cabbage cannot be inclined.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery technology, in particular to a self-propelled Chinese cabbage harvester. BACKGROUND

[0002] Chinese cabbage is a common vegetable. Due to the morphological characteristics and planting characteristics of Chinese cabbage, its harvesting is difficult, and generally it is harvested by workers one by one, which is labor-intensive. With the development of technology, there are agricultural machines on the market that can automatically harvest Chinese cabbage.

[0003] In the prior art, patent CN103797968A provides a semi-suspension type Chinese cabbage harvester, which includes a pulling device, a flexible clamping mechanism, a cutting device, an inclined conveying device and a horizontal conveying device. The pulling device includes two opposed guide screw shafts and two parallel screw shafts, the flexible clamping mechanism includes two rubber flat belts. During the pulling process, the roots of the Chinese cabbage are pulled out by the guide screw shaft, and the main part of the pulled Chinese cabbage is clamped by the flexible clamping mechanism. The guide screw shaft clamps the roots of the Chinese cabbage to realize the rear conveying of the Chinese cabbage, and the cutting device cuts the roots of the Chinese cabbage.

[0004] In actual use, the above-mentioned harvester has the following disadvantages: (1) due to the wide width of the rubber flat belt, the position of the front end cannot be set low, and during the pulling process of the pulling mechanism on the Chinese cabbage, the pulling mechanism first acts on the Chinese cabbage, and the pulling process will make the Chinese cabbage posture skew, which cannot enter the flexible clamping mechanism; (2) the spiral thread of the guide screw shaft is easy to block the soil, which reduces the conveying effect and cannot keep the synchronization of the conveying speed of the Chinese cabbage up and down, so the structure runs unstably; (3) the distance between the guide screw shafts is fixed, which cannot adapt to the change of the thickness of the roots of the Chinese cabbage. For thin roots, the conveying effect cannot be guaranteed, and for thick roots, the roots may be broken. SUMMARY

[0005] The present application provides a self-propelled Chinese cabbage harvester with reasonable layout, which can keep the posture of Chinese cabbage throughout the process and has stable structure operation.

[0006] Technical scheme: In order to achieve the above-mentioned purpose, the self-propelled Chinese cabbage harvester of the present application comprises a mobile body and a harvesting table installed in front of the mobile body.

[0007] The harvesting table comprises a rack, and the rack is provided with a clamping lifting device, a cutting device, a pulling mechanism and a power system.

[0008] The clamping lifting device is installed obliquely from low in front to high in back, and comprises two groups of symmetrically arranged wide clamping assemblies, wherein each wide clamping assembly comprises a wide clamping belt.

[0009] The harvesting platform further comprises an upper entraining mechanism and a lower entraining mechanism; the upper entraining mechanism is located above the front end of the entraining lifting device, and the lower entraining mechanism is located on the lower side of the entraining lifting device;

[0010] The front end of both the upper entraining mechanism and the lower entraining mechanism extends to the front end of the entraining lifting device;

[0011] The pulling mechanism comprises two pulling wheels located at the front end of the lower entraining mechanism, the edges of the pulling wheels have a circumferential array of pulling teeth; the cutting device is located on the rear side of the entraining lifting device.

[0012] Further, the lower entraining mechanism comprises two symmetrically arranged first narrow entraining belts, and a first support assembly is arranged corresponding to each first narrow entraining belt; the first support assembly comprises a first support frame, a first large pulley and a first small pulley mounted at the front end of the first support frame, and a second large pulley mounted at the rear end of the first support frame; the pulling wheel is coaxially mounted with the first large pulley; the first small pulley is located obliquely in front of the first large pulley, and the distance between the two first small pulleys is less than the distance between the two first large pulleys.

[0013] Further, the upper entraining mechanism comprises two symmetrically arranged second narrow entraining belts, and a second support assembly is arranged corresponding to each second narrow entraining belt; the second support assembly comprises a second support frame and a driving wheel mounted on the second support frame; the driving wheel is located in the middle of the second narrow entraining belt;

[0014] The wide entraining belt assembly comprises a front pulley and a rear pulley located at the front and rear ends of the wide entraining belt; the driving wheel is coaxially fixed with the front pulley on the same side; the second large pulley is coaxially fixed with the rear pulley on the same side;

[0015] The pulling wheel is fixed opposite to the first large pulley on the same side.

[0016] Further, the power system comprises a power unit; a first horizontal shaft is rotatably mounted on the frame; the first horizontal shaft connects the rear pulley through a first reversing box and a first vertical shaft;

[0017] A second horizontal shaft is also mounted on the frame, a transmission relationship is established between the first horizontal shaft and the second horizontal shaft through a transmission mechanism, and the second horizontal shaft drives the cutter head of the cutting device to rotate through a second reversing box and a second vertical shaft.

[0018] Further, the second support frame comprises a fixed rod frame and a rotating rod frame; the fixed rod frame is fixed relative to the frame; the front end of the rotating rod frame is rotatably installed relative to the fixed rod frame, and the rear end is installed with a first driven wheel; the fixed rod frame and the rotating rod frame are provided with a compression spring therebetween; the front end of the fixed rod frame is installed with a second driven wheel.

[0019] Further, the entraining and lifting device further comprises a plurality of elastic belt surface pressing mechanisms arranged inside the wide entraining belt.

[0020] Further, the lower entraining belt mechanism comprises a plurality of elastic belt body pressing mechanisms arranged inside the first narrow entraining belt.

[0021] Further, the moving body is installed with a longitudinal lifting belt located at the rear side of the entraining and lifting device and a transverse conveying mechanism located at the rear side of the longitudinal lifting belt.

[0022] Further, the power system comprises a third horizontal shaft and a fourth horizontal shaft; the power unit is connected with the third horizontal shaft through a control mechanism; the third horizontal shaft is connected with the longitudinal lifting belt and the transverse conveying mechanism through intermediate transmission mechanisms.

[0023] Further, the moving body has two groups of track structures arranged symmetrically.

[0024] Beneficial effects: The self-propelled Chinese cabbage harvester has the following beneficial effects:

[0025] By arranging the upper entraining belt mechanism and the lower entraining belt mechanism and the pulling and lifting device, the components are reasonably arranged, the pulling and lifting device assists in pulling out the Chinese cabbage during harvesting, and the upper and lower sides of the Chinese cabbage are clamped during the pulling and lifting stage and the stage of entering the entraining and lifting device, so that the posture of the Chinese cabbage can be maintained without tilting, and the tilting problem caused by the fact that the Chinese cabbage cannot enter in time due to the fact that the wide entraining belt is too thick and cannot be too low in position in the prior art can be solved.

[0026] Compared with the scheme of clamping the root of the Chinese cabbage by the screw in the prior art, the screw thread is easy to be filled with soil, which reduces the transmission effect, and the screw cannot adapt to the thickness change of the root and easily clamps the root, the first narrow entraining belt in the present application clamps the root of the Chinese cabbage, and the above problems do not exist, and the first narrow entraining belt is elastic and can adapt to the thickness change of the root of the Chinese cabbage.

[0027] By reasonably designing the linkage structure, the entraining and lifting device, the upper entraining belt mechanism, the lower entraining belt mechanism, the pulling and lifting mechanism and the cutting device are linked and operated, the number of original driving members can be reduced, the cost is reduced, the structure layout is compact, and the cooperative movement between the components is more harmonious. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a side view of the self-propelled Chinese cabbage harvester;

[0029] Figure 2 is a side view of the self-propelled Chinese cabbage harvester;

[0030] Figure 3 is a first perspective view of the harvesting table part;

[0031] Figure 4 is a second perspective view of the harvesting table part;

[0032] Figure 5 is a structure view of one half of the upper clamping mechanism.

[0033] In the figure: 1 - mobile body; 2 - frame; 3 - clamping lifting device; 31 - wide clamping; 32 - front pulley; 33 - rear pulley; 34 - elastic belt surface compression mechanism; 4 - cutting device; 4 - cutting device; 41 - cutter head; 5 - pulling mechanism; 51 - pulling pulley; 51a - pulling tooth; 6 - upper clamping mechanism; 61 - second narrow clamping; 62 - second support frame; 62a - fixed rod frame; 62b - rotating rod frame; 63 - driving pulley; 64 - compression spring; 65 - first driven pulley; 66 - second driven pulley; 7 - lower clamping mechanism; 71 - first narrow clamping; 72 - first support frame; 73 - first large pulley; 74 - first small pulley; 75 - second large pulley; 76 - elastic belt compression mechanism; 81 - power unit; 82 - first horizontal shaft; 83 - first reversing box; 84 - first vertical shaft; 85 - second horizontal shaft; 86 - transmission mechanism; 87 - second reversing box; 88 - second vertical shaft; 89 - third horizontal shaft; 810 - fourth horizontal shaft; 811 - control mechanism; 812 - first vertical reversing mechanism; 813 - first longitudinal shaft; 814 - second vertical reversing mechanism; 815 - second longitudinal shaft; 816 - chain transmission mechanism; 817 - third vertical reversing mechanism; 91 - longitudinal lifting belt; 92 - horizontal conveying mechanism. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the accompanying drawings.

[0035] As Figure 1 shown in the self-propelled Chinese cabbage harvester, it includes a mobile body 1 and a harvesting table installed in front of the mobile body 1; the mobile body 1 has two sets of track structures symmetrically arranged.

[0036] The harvesting platform comprises a frame 2, on which a clamping lifting device 3, a cutting device 4, a pulling mechanism 5 and a power system are installed; the clamping lifting device 3 is installed obliquely with the front lower and the rear higher, and comprises two groups of symmetrically arranged wide clamping assemblies, each of which comprises a wide clamping 31, and a clamping conveying channel for clamping the main body of Chinese cabbage is formed between the two wide clamps 31.

[0037] The harvesting platform further comprises an upper clamping mechanism 6 and a lower clamping mechanism 7; the upper clamping mechanism 6 is located above the front end of the clamping lifting device 3, and the lower clamping mechanism 7 is located on the lower side of the clamping lifting device 3; the front end of both the upper clamping mechanism 6 and the lower clamping mechanism 7 extends to the front end of the clamping lifting device 3; the rear end of the upper clamping mechanism 6 is located on the front side of the clamping lifting device 3, and the rear end of the lower clamping mechanism 7 extends to the rear end of the clamping lifting device 3.

[0038] The pulling mechanism 5 comprises two pulling wheels 51 located at the front end of the lower clamping mechanism 7, the edges of the pulling wheels 51 are provided with a plurality of pulling teeth 51a arranged in a circumferential array; the cutting device 4 is located on the rear side of the clamping lifting device 3.

[0039] Preferably, the lower clamping mechanism 7 comprises two symmetrically arranged first narrow clamping assemblies 71, and a first support assembly is arranged corresponding to each of the first narrow clamping assemblies 71; the first support assembly comprises a first support frame 72, a first large pulley 73 and a first small pulley 74 installed at the front end of the first support frame 72, and a second large pulley 75 installed at the rear end of the first support frame 72; the pulling wheel 51 is coaxially installed with the first large pulley 73; the first small pulley 74 is located obliquely in front of the first large pulley 73, and the distance between the two first small pulleys 74 is smaller than the distance between the two first large pulleys 73. With the above arrangement structure, by arranging the first large pulley 73 and the first small pulley 74, on the one hand, the first large pulley 73 can drive the pulling wheel 51 to rotate actively, and on the other hand, the first small pulley 74 makes the entrances of the two first narrow clamping assemblies 71 protrude forward, so that the roots of Chinese cabbage can enter between the two pulling wheels 51 and between the two first narrow clamping assemblies 71 at the same time.

[0040] Preferably, the upper entraining mechanism 6 comprises two second narrow entraining belts 61 arranged symmetrically, and further comprises a second support assembly arranged corresponding to each of the second narrow entraining belts 61, the second support assembly comprises a second support frame 62, and a driving wheel 63 is mounted on the second support frame 62; the driving wheel 63 is located at the middle part of the second narrow entraining belt 61; the wide entraining belt assembly comprises a front belt wheel 32 and a rear belt wheel 33 arranged at the front and rear ends of the wide entraining belt 31; the driving wheel 63 is coaxially fixed with the front belt wheel 32 on the same side; the second large belt wheel 75 is coaxially fixed with the rear belt wheel 33 on the same side; the drawing and pulling wheel 51 is fixed opposite to the first large belt wheel 73 on the same side.

[0041] The power system comprises a power unit 81; a first horizontal shaft 82 is rotatably arranged on the frame 2; the first horizontal shaft 82 is connected with the rear belt wheel 33 through a first reversing box 83 and a first vertical shaft 84;

[0042] A second horizontal shaft 85 is further arranged on the frame 2, and a transmission mechanism 86 is arranged between the first horizontal shaft 82 and the second horizontal shaft 85 to establish a transmission relationship therebetween; the second horizontal shaft 85 drives the cutter head 41 of the cutting device 4 to rotate through a second reversing box 87 and a second vertical shaft 88.

[0043] The above structure can drive the entraining and lifting device 3, the upper entraining mechanism 6, the lower entraining mechanism 7, the drawing and pulling mechanism 5 and the cutting device 4 to rotate in linkage, can reduce the number of original driving members, reduce the cost, and the structure layout is compact, and the cooperative movement between the components is more harmonious. The diameter of the driving wheel 63 is equal to that of the front belt wheel 32, and the diameter of the rear belt wheel 33 is equal to that of the second large belt wheel 75, so that the linear velocities of the wide entraining belt 31, the second narrow entraining belt 61 and the first narrow entraining belt 71 are equal, and the Chinese cabbage can be smoothly transferred from the first narrow entraining belt 71 to the entraining and lifting device 3.

[0044] With the above structure, the upper clamping mechanism 6 and the lower clamping mechanism 7 are based on narrow belt operation. In the process of harvesting Chinese cabbage, since the front ends of the upper clamping mechanism 6 and the lower clamping mechanism 7 are more forward, the front ends of the upper clamping mechanism 6 and the lower clamping mechanism 7 act on the Chinese cabbage before the clamping lifting device 3, and at the same time, since the pulling wheels 51 are located at the front end of the lower clamping mechanism 7, the pulling mechanism 5 and the lower clamping mechanism 7 act on the root of the Chinese cabbage synchronously. Specifically, in the harvesting process, as the machine advances, the upper end position of the root of the Chinese cabbage enters between the two pulling wheels 51, the pulling teeth 51a exert a force on the root to pull the root out of the soil, and at the same time, the top of the Chinese cabbage is wrapped by the two second narrow clamping belts 61. After the root of the Chinese cabbage is pulled out by the pulling teeth 51a, the upper and lower sides of the Chinese cabbage respectively enter the clamping lifting device 3 stably under the clamping action of the first narrow clamping belt 71 and the second narrow clamping belt 61, and the wide clamping belt 31 of the clamping lifting device 3 clamps the main part of the middle part of the Chinese cabbage. Subsequently, the upper end of the Chinese cabbage is separated from the upper clamping mechanism 6, and the upper end position of the root continues to be clamped by the two first narrow clamping belts 71. Since the upper end position of the root is the thinnest position of the Chinese cabbage, clamping this position by the first narrow clamping belt 71 can prevent the Chinese cabbage from tilting during the lifting and conveying process. When the root of the Chinese cabbage reaches the position of the cutting device 4, the cutting device 4 cuts the root of the Chinese cabbage, and then the main part of the Chinese cabbage continues to rise a small distance to separate from the clamping lifting device 3.

[0045] Compared with the prior art mentioned in the background art, the following technical effects are achieved: first, by providing the upper clamping mechanism 6 and the lower clamping mechanism 7, the upper and lower sides of the Chinese cabbage are clamped during the pulling stage and the stage of entering the clamping lifting device 3, which can maintain the posture of the Chinese cabbage from tilting and solve the problem of tilting caused by the fact that the wide clamping belt 31 is too thick and cannot be lowered too low. Second, compared with the scheme in the comparative document in which the screw clamps the root of the Chinese cabbage, the screw thread is easy to be filled with soil, which reduces the transmission effect, and the screw cannot adapt to the thickness change of the root and easily clamps the root. In the present application, the first narrow clamping belt 71 clamps the root of the Chinese cabbage, which does not have the above problems, and the first narrow clamping belt 71 has elasticity and can adapt to the thickness change of the root of the Chinese cabbage.

[0046] Preferably, the second support frame 62 comprises a fixed rod frame 62a and a rotating rod frame 62b; the fixed rod frame 62a is fixed relative to the frame 2; the front end of the rotating rod frame 62b is rotatably mounted relative to the fixed rod frame 62a, and the rear end is mounted with a first driven wheel 65 which is closer to the center of symmetry of the two second narrow clamping belts 61 than the driving wheel 63; a compression spring 64 is arranged between the fixed rod frame 62a and the rotating rod frame 62b; the front end of the fixed rod frame 62a is mounted with a second driven wheel 66. With the above structure, the structural design of the second support frame 62 can keep the second narrow clamping belt 61 in tension and dynamically adapt to the thickness change of the Chinese cabbage and maintain the clamping force when the Chinese cabbage top enters the upper clamping mechanism 6.

[0047] Preferably, the clamping belt lifting device 3 further comprises a plurality of elastic belt surface pressing mechanisms 34 arranged inside the wide clamping belt 31. The elastic belt surface pressing mechanisms 34 can elastically change to adapt to the thickness change of the Chinese cabbage and maintain the clamping force. In the embodiment, each wide clamping belt assembly comprises two sets of elastic belt surface pressing mechanisms 34, and the pressing wheels of the elastic belt surface pressing mechanisms 34 are closer to the center line of the clamping belt lifting device 3 than the front pulley 32 and the rear pulley 33, so that a trumpet-shaped entrance is formed on the front side between the two wide clamping belts 31, and a trumpet-shaped exit is formed on the rear side, facilitating the entry of the Chinese cabbage and the release of the Chinese cabbage.

[0048] Preferably, the lower clamping mechanism 7 comprises a plurality of elastic belt body pressing mechanisms 76 arranged inside the first narrow clamping belt 71. The elastic belt body pressing mechanisms 76 can elastically change to adapt to the thickness change of the Chinese cabbage root and maintain the clamping force. In the embodiment, each first narrow clamping belt 71 corresponds to two elastic belt body pressing mechanisms 76, and the pressing wheels of the elastic belt body pressing mechanisms 76 are closer to the center line of the lower clamping mechanism 7 than the first large pulley 73 and the second large pulley 75. In this way, the rear side of the two first narrow clamping belts 71 forms a trumpet-shaped exit, and the two first narrow clamping belts 71 release the Chinese cabbage root before the cutting device 4 cuts the root, which can prevent the cutting process from being affected or the cutting device 4 from mistakenly cutting the first narrow clamping belt 71. The cut root falls in time and does not fall onto the longitudinal lifting belt 91.

[0049] Preferably, the moving body 1 is mounted with a longitudinal lifting belt 91 located at the rear side of the clamping belt lifting device 3 and a transverse conveying mechanism 92 located at the rear side of the longitudinal lifting belt 91.

[0050] Preferably, the power system comprises a third horizontal shaft 89 and a fourth horizontal shaft 810; the power unit 81 and the third horizontal shaft 89 are connected through a control mechanism 811, which can control the on-off of the power connection between the two; the third horizontal shaft 89 is in transmission relationship with the longitudinal lifting belt 91 and the horizontal conveying mechanism 92 through intermediate transmission mechanisms. In addition, the third horizontal shaft 89 has a linkage relationship with the first horizontal shaft 82. In this way, all moving parts can be driven to operate by the same power unit 81. The third horizontal shaft 89 drives the longitudinal lifting belt 91 to operate through the fourth horizontal shaft 810, two first vertical reversing mechanisms 812 and a first longitudinal shaft 813; the third horizontal shaft 89 transmits power to the first horizontal shaft 82 through two second vertical reversing mechanisms 814 and a second longitudinal shaft 815; the third horizontal shaft 89 transmits power to the horizontal conveying mechanism 92 through a chain transmission mechanism 816 and a third vertical reversing mechanism 817.

[0051] The above description is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A self-propelled Chinese cabbage harvester, comprising a mobile body (1) and a harvesting platform installed in front of the mobile body (1); The harvesting platform includes a frame (2), on which a clamping and lifting device (3), a cutting device (4), a pulling mechanism (5) and a power system are installed; The clamping and lifting device (3) is installed at an angle with the front lower than the rear, and includes two sets of symmetrically arranged wide clamping assemblies, each wide clamping assembly including a wide clamping strap (31); characterized in that: The harvesting platform also includes an upper clamping mechanism (6) and a lower clamping mechanism (7); the upper clamping mechanism (6) is located above the front end of the clamping and lifting device (3), and the lower clamping mechanism (7) is located below the clamping and lifting device (3); The front ends of both the upper clamping mechanism (6) and the lower clamping mechanism (7) extend to the front end of the clamping lifting device (3); The pulling mechanism (5) includes two pulling wheels (51) located at the front end of the lower clamping mechanism (7), and the edges of the pulling wheels (51) have a plurality of pulling teeth (51a) arranged in a circumferential array; the cutting device (4) is located on the rear side of the clamping lifting device (3); The lower clamping mechanism (7) includes two symmetrically arranged first narrow clamping straps (71), and also includes a first support assembly corresponding to each of the first narrow clamping straps (71); the first support assembly includes a first support frame (72), a first large pulley (73) and a first small pulley (74) installed at the front end of the first support frame (72), and a second large pulley (75) installed at the rear end of the first support frame (72); the pull-out wheel (51) is coaxially mounted with the first large pulley (73); the first small pulley (74) is located diagonally in front of the first large pulley (73), and the distance between the two first small pulleys (74) is smaller than the distance between the two first large pulleys (73); The upper clamping mechanism (6) includes two symmetrically arranged second narrow clamping straps (61), and also includes a second support assembly corresponding to each of the second narrow clamping straps (61). The second support assembly includes a second support frame (62) and a drive wheel (63) mounted on the second support frame (62). The drive wheel (63) is located in the middle of the second narrow clamping strap (61). The wide belt assembly includes a front pulley (32) and a rear pulley (33) located at the front and rear ends of the wide belt (31); the drive pulley (63) is coaxially fixed with the front pulley (32) on the same side; the second large pulley (75) is coaxially fixed with the rear pulley (33) on the same side; The pulley (51) is fixed relative to the first large pulley (73) on the same side; During the harvesting process, as the machine moves forward, the upper part of the root of the Chinese cabbage enters between two puller wheels (51). The puller teeth (51a) apply force to the root to pull it out of the soil. At the same time, the pulled-out root enters between two first narrow clamps (71). Meanwhile, the top of the Chinese cabbage is covered by two second narrow clamps (61). After the root of the Chinese cabbage is pulled out by the puller teeth (51a), the upper and lower sides of the Chinese cabbage enter the clamping and lifting device (3) under the clamping action of the first narrow clamp (71) and the second narrow clamp (61) respectively. The wide clamp (31) of the clamping and lifting device (3) clamps the main body of the Chinese cabbage in the middle. Subsequently, the upper end of the Chinese cabbage is separated from the upper clamping mechanism (6), and the upper part of its root continues to be clamped by the two first narrow clamps (71).

2. The self-propelled Chinese cabbage harvester according to claim 1, characterized in that, The power system includes a power unit (81); a first horizontal shaft (82) is rotatably mounted on the frame (2); the first horizontal shaft (82) is connected to the rear pulley (33) through a first reversing box (83) and a first vertical shaft (84); The frame (2) is also equipped with a second horizontal shaft (85). The first horizontal shaft (82) and the second horizontal shaft (85) are connected by a transmission mechanism (86). The second horizontal shaft (85) drives the cutter head (41) of the cutting device (4) to operate through the second reversing box (87) and the second vertical shaft (88).

3. The self-propelled Chinese cabbage harvester according to claim 1, characterized in that, The second support frame (62) includes a fixed rod frame (62a) and a rotating rod frame (62b); the fixed rod frame (62a) is fixed relative to the frame (2); the front end of the rotating rod frame (62b) is rotatably mounted relative to the fixed rod frame (62a), and a first driven wheel (65) is mounted at the rear end; a compression spring (64) is provided between the fixed rod frame (62a) and the rotating rod frame (62b); a second driven wheel (66) is mounted at the front end of the fixed rod frame (62a).

4. The self-propelled Chinese cabbage harvester according to claim 1, characterized in that, The clamping and lifting device (3) also includes a plurality of elastic band pressing mechanisms (34) placed inside the wide clamping band (31).

5. The self-propelled Chinese cabbage harvester according to claim 1, characterized in that, The lower clamping mechanism (7) includes a plurality of elastic band pressing mechanisms (76) located inside the first narrow clamping band (71).

6. The self-propelled Chinese cabbage harvester according to claim 1, characterized in that, The mobile body (1) is equipped with a longitudinal lifting belt (91) located behind the clamping lifting device (3) and a transverse conveying mechanism (92) located behind the longitudinal lifting belt (91).

7. The self-propelled Chinese cabbage harvester according to claim 6, characterized in that, The power system includes a third horizontal shaft (89); the power unit (81) is connected to the third horizontal shaft (89) through an operating mechanism (811); the third horizontal shaft (89) establishes a transmission relationship with the longitudinal lifting belt (91) and the transverse conveying mechanism (92) through an intermediate transmission mechanism.

8. The self-propelled Chinese cabbage harvester according to claim 1, characterized in that, The mobile body (1) has two sets of track structures arranged symmetrically.

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