Transmission mechanism for medium-sized mini-tiller

Abstract

The utility model discloses a transmission mechanism for a medium-sized mini-tiller, and belongs to the technical field of mini-tillers, the transmission mechanism for the medium-sized mini-tiller comprises a shell mechanism and a transmission mechanism II, the inner side of the shell mechanism is rotatably connected with a transmission mechanism I, the inner side of the shell mechanism is also rotatably connected with the transmission mechanism II, and the transmission mechanism II is connected with the shell mechanism. The inner side of the shell mechanism is rotationally connected with a third transmission mechanism. According to the utility model, a plurality of gears are used for transmission, the structure is firm, the wear resistance is strong, the volume of the tillage machine is effectively reduced, the gear transmission is accurate, the power loss can be effectively reduced, the power of the tillage machine is improved, the tillage depth and efficiency are greatly improved, and the operation quality is obviously improved; through the arrangement of the first transmission mechanism, the second transmission mechanism, the third transmission mechanism, the fourth transmission mechanism and the fifth transmission mechanism, four-wheel drive is achieved, power is improved, multi-gear speed change and multi-gear power switching are achieved, and operation flexibility of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of micro-tiller technology, and in particular to a transmission mechanism for a medium-sized micro-tiller. Background Technology

[0002] A mini tiller is a type of agricultural machinery used for tilling, ditching, and rotary tilling of soil. This machinery is particularly important for agricultural activities in small or confined spaces, effectively improving the efficiency and quality of crop cultivation.

[0003] However, with an increasing number of farmers demanding new features from their products, mini tillers on the market urgently need to be upgraded to meet these needs.

[0004] In view of the above problems, this application proposes an improved micro-tiller design, which aims to improve the performance and reliability of the micro-tiller by optimizing the manufacturing process and structural design, so as to better meet the needs of modern agriculture. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a transmission mechanism for a medium-sized micro-tiller.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a transmission mechanism for a medium-sized micro-tiller, including a housing mechanism and a transmission mechanism two, wherein a transmission mechanism one is rotatably connected to the inner side of the housing mechanism, a transmission mechanism two is also rotatably connected to the inner side of the housing mechanism, and a transmission mechanism three is rotatably connected to the inner side of the housing mechanism.

[0007] The inner side of the outer shell mechanism is rotatably connected to a transmission mechanism four;

[0008] The inner side of the outer casing mechanism is also rotatably connected to a transmission mechanism five for transmission and gear shifting, and the inner side of the outer casing mechanism is also rotatably connected to a transmission mechanism six for transmission and power output.

[0009] The present invention is further configured such that: the outer shell mechanism includes a first shell, a cover is fixed on the first shell, and a second shell is also fixed on the first shell.

[0010] Through the above technical solutions, shell 1, cover and shell 2 are all made of high-quality cast iron, which has the characteristics of high strength, wear resistance and corrosion resistance, and can effectively protect its internal structure.

[0011] The present invention is further configured as follows: the transmission mechanism one includes a gear shaft one rotatably connected to the housing one, and a gear one fixed on the gear shaft one; the transmission mechanism one also includes a gear shaft two rotatably connected to the housing one, and a gear two fixed on the gear shaft two; the transmission mechanism one also includes a gear shaft three rotatably connected to the housing one, and a gear three fixed on the gear shaft three; a sliding gear three two is also slidably disposed on the gear shaft three; a sliding gear three three is also slidably disposed on the gear shaft three; a sliding gear three four is fixed on the sliding gear three; a shift lever fork assembly two is rotatably connected to the sliding gear three three; and a shift lever fork assembly three is rotatably connected to the sliding gear three two.

[0012] Through the above technical solution, gear 1 meshes with gear 2, gear 3 meshes with gear 2, and gear shaft 1 is connected to the engine output shaft. When the engine starts, sliding gear 3 and sliding gear 3 form a double gear. Moving the shift lever and fork assembly 2 can adjust the position of sliding gear 3 and sliding gear 3, and moving the shift lever and fork assembly 3 can adjust the position of sliding gear 3.

[0013] The present invention is further configured such that: the transmission mechanism 2 includes a gear shaft 4 rotatably connected to the housing 1, and gears 41, 42, 43 and 44 are fixed on the gear shaft 4; the transmission mechanism 2 also includes a gear shaft 5 rotatably connected to the housing 1, and gears 51 and 52 are fixed on the gear shaft 5; the transmission mechanism 2 also includes a gear shaft 6 rotatably connected to the housing 1, and gear 61 is rotatably connected on the gear shaft 6; a sliding gear 62 is slidably disposed on the gear shaft 6; a sliding gear 63 is fixed on the sliding gear 62; and a shift lever fork assembly 1 is rotatably connected to the sliding gear 62.

[0014] Through the above technical solution, adjusting the position of sliding gear 32 by shifting the shift lever and fork assembly three allows sliding gear 32 to mesh with gear 51 or gear 42. When gear 51 rotates, it drives gear shaft 5 and gear 52 to rotate. Gear 43 meshes with gear 52, thereby driving gear shaft 4 to rotate. Shift lever and fork assembly three can also adjust sliding gear 32 to mesh with gear 42, thus forming two gear positions. By shifting the shift lever and fork assembly two, sliding gear 33 can mesh with gear 43, or sliding gear 3... Gear 4 meshes with gear 44, thus forming two other gear positions. Gear 61 meshes with gear 41, and sliding gear 63 meshes with gear 44. When gear shaft 4 rotates, gear 41 can drive sliding gear 63 to rotate through gear 61, and gear 44 can also drive sliding gear 63 to rotate through sliding gear 62. Sliding gear 62 and sliding gear 63 form a double gear. The shift lever fork assembly can be adjusted to make sliding gear 62 mesh with gear 43, or make sliding gear 63 mesh with gear 44, forming two gear positions.

[0015] The present invention is further configured such that: the transmission mechanism three includes a gear shaft seven rotatably connected to the housing one, and gears seven-one, seven-two and seven-three are rotatably connected to the gear shaft seven; the transmission mechanism three also includes a gear shaft eight rotatably connected to the housing one, and gears eight-one and eight-two are fixed on the gear shaft eight; a steering fork is also connected to gear seven-one.

[0016] Through the above technical solution, gear 72 meshes with sliding gear 63. When sliding gear 63 rotates, it drives gear 72 to rotate, thereby driving gear 71 and gear 73 to rotate. Gear shaft 8 is a travel output shaft, and its two ends can rotate independently. Gear 71 and gear 73 are steering gears. Two steering forks are provided to control gear 71 and gear 73 to mesh or disengage with gear 72, so that the two ends of the travel output shaft produce a differential speed, thereby realizing steering or synchronization functions. The present invention is further configured as follows: the transmission mechanism 4 includes gear shaft 9 rotatably connected to housing 1, gear 91 is fixed on gear shaft 9, sliding gear 92 is slidably arranged on gear shaft 9, and sliding gear 93 is fixed on sliding gear 92. The transmission mechanism 4 also includes gear shaft 10 rotatably connected to housing 1, with flat gear 11 and flat gear 12 fixed on gear shaft 10, and shift lever 4 rotatably connected to sliding gear 93.

[0017] Through the above technical solution, gear 91 meshes with gear 31. When gear shaft 3 rotates, gear 31 can drive gear 91 to rotate, thereby causing gear shaft 9 to rotate. Sliding gear 92 and sliding gear 93 form a sliding double gear. The position of sliding gear 92 and sliding gear 93 can be adjusted by shift lever 4, so that sliding gear 92 meshes with flat gear 11. Flat gear 11 can drive flat gear 12 to rotate through gear shaft 10, or make sliding gear 93 mesh with flat gear 12 to directly drive flat gear 12 to rotate, forming two main gear positions.

[0018] The present invention is further configured such that: the transmission mechanism five includes a transmission shaft eleven rotatably connected to the housing two, a sliding gear eleven-one is slidably disposed on the transmission shaft eleven, and a gear eleven-two is fixed on the transmission shaft eleven; the transmission mechanism five also includes a transmission shaft twelfth rotatably connected to the housing two, and a gear eleven-one and a gear eleven-two are fixed on the transmission shaft twelfth; the transmission mechanism five also includes a transmission shaft thirteenth rotatably connected to the housing two, and a gear thirteen-one is fixed on the transmission shaft thirteen; a shift lever fork assembly five is rotatably connected to the sliding gear eleven-one.

[0019] Through the above technical solution, gear 122 meshes with gear 131, and gear 112 meshes with spur gear 12. When spur gear 12 rotates, it can drive gear 112 and drive shaft 11 to rotate, thereby driving sliding gear 111 to rotate. Sliding gear 111 can be shifted by shift lever fork combination 5, so that it can directly mesh with gear 131, or it can mesh with gear 121, thereby driving gear 122 and gear 131 to rotate through drive shaft 12, forming two gears.

[0020] The present invention is further configured such that: the transmission mechanism six includes a transmission shaft fourteen rotatably connected to the housing two, and a gear fourteen-one is fixed on the transmission shaft fourteen; the transmission mechanism six also includes a transmission shaft fifteen rotatably connected to the housing two, and a gear fifteen-one is fixed on the transmission shaft fifteen; the transmission mechanism six also includes a transmission shaft sixteen rotatably connected to the housing two, and a gear sixteen-one is fixed on the transmission shaft sixteen.

[0021] Through the above technical solution, gear 141 meshes with gear 131, gear 151 meshes with gear 141, gear 161 meshes with gear 151, and drive shaft 16 is a power output shaft that can output power to the drive wheels of the tiller.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. This utility model uses multiple gears for transmission, which has a sturdy structure and strong wear resistance, effectively reducing the size of the tiller. In addition, the gear transmission is precise, which can effectively reduce power loss, improve the power of the tiller, greatly improve the tillage depth and efficiency, and significantly improve the quality of operation.

[0024] 2. This utility model achieves four-wheel drive by setting up transmission mechanism one, transmission mechanism two, transmission mechanism three, transmission mechanism four and transmission mechanism five, which improves power and realizes multi-speed change and multi-power switching, thereby improving the operational flexibility of the device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 The following are front view structural diagrams of transmission mechanism 1, transmission mechanism 2, transmission mechanism 3, transmission mechanism 4, transmission mechanism 5 and transmission mechanism 6 of this utility model;

[0027] Figure 3 This is a structural diagram of the transmission mechanism of this utility model;

[0028] Figure 4 This is a structural diagram of the transmission mechanism of this utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the transmission mechanism of this utility model;

[0030] Figure 6 This is a structural diagram of the transmission mechanism of this utility model;

[0031] Figure 7 This is a structural diagram of the transmission mechanism of this utility model;

[0032] Figure 8 This is a structural diagram of the transmission mechanism of this utility model.

[0033] In the diagram: 1. Outer shell mechanism; 101. Shell 1; 102. Cover; 103. Shell 2; 2. Transmission mechanism 1; 201. Gear shaft 1; 202. Gear 1-1; 203. Gear shaft 2; 204. Gear 2-1; 205. Gear shaft 3; 206. Gear 3-1; 207. Sliding gear 3-2; 208. Sliding gear 3-3; 209. Sliding gear 3-4; 210. Shift lever and fork assembly 2; 211. Shift lever and fork assembly 3; 3 1. Transmission Mechanism 2; 301. Gear Shaft 4; 302. Gear 4-1; 303. Gear 4-2; 304. Gear 4-3; 305. Gear 4-4; 306. Gear Shaft 5; 307. Gear 5-1; 308. Gear 5-2; 309. Gear Shaft 6; 310. Gear 6-1; 311. Sliding Gear 6-2; 312. Sliding Gear 6-3; 313. Shift Lever Fork Assembly 1; 4. Transmission Mechanism 3; 401. Gear Shaft 7; 402. Gear 7 1. Gear 72; 404. Gear 73; 405. Gear Shaft 8; 406. Gear 81; 407. Gear 82; 408. Steering Fork; 5. Transmission Mechanism 4; 501. Gear Shaft 9; 502. Gear 91; 503. Sliding Gear 92; 504. Sliding Gear 93; 505. Gear Shaft 10; 506. Flat Gear 11; 507. Flat Gear 12; 508. Gear Shift Lever 4; 6. Transmission Mechanism 5; 601. Drive Shaft 11; 602, Sliding Gear 11; 603, Gear 11; 604, Drive Shaft 12; 605, Gear 12; 606, Gear 12; 607, Drive Shaft 13; 608, Gear 13; 609, Shift Lever Fork Assembly 5; 7, Transmission Mechanism 6; 701, Drive Shaft 14; 702, Gear 14; 703, Drive Shaft 15; 704, Gear 15; 705, Drive Shaft 16; 706, Gear 16. Detailed Implementation

[0034] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0035] Please see Figures 1-8A transmission mechanism for a medium-sized micro-tiller includes a housing mechanism 1 and a transmission mechanism 2 3. The housing mechanism 1 includes a housing 101, a cover 102 fixed on the housing 101, and a housing 2 103 fixed on the housing 101. The housing 101, cover 102, and housing 2 103 are all made of high-quality cast iron, which has the characteristics of high strength, wear resistance, and corrosion resistance, and can effectively protect its internal structure. The transmission mechanism 2 is rotatably connected to the inner side of the housing mechanism 1. The transmission mechanism 2 includes a gear shaft 201 rotatably connected to the housing 101, and a gear 202 fixed on the gear shaft 201. The transmission mechanism 2 also includes a gear shaft 203 rotatably connected to the housing 101, and a gear 204 fixed on the gear shaft 203. The transmission mechanism 2 also includes a gear shaft 205 rotatably connected to the housing 101, and a gear 304 fixed on the gear shaft 205. Gear shaft 201 is connected to the engine output shaft. Gear shaft 206 and gear shaft 205 are slidably fitted with a sliding gear 207 and a sliding gear 208. A sliding gear 209 is fixed to the sliding gear 208. A shift lever fork assembly 210 is rotatably connected to the sliding gear 208. A shift lever fork assembly 211 is rotatably connected to the sliding gear 207. Gear 202 meshes with gear 204, and gear 206 meshes with gear 204. Gear shaft 201 is connected to the engine output shaft. When the engine starts, sliding gears 208 and 209 form a double gear. Shifting the shift lever fork assembly 210 adjusts the positions of sliding gears 208 and 209, while shifting the shift lever fork assembly 211 adjusts the position of sliding gear 207.

[0036] like Figure 2 and Figure 4As shown, a transmission mechanism 2 3 is rotatably connected to the inner side of the outer casing mechanism 1. The transmission mechanism 2 3 includes a gear shaft 4 301 rotatably connected to the outer casing 1 101. Gears 4-1 302, 4-2 303, 4-3 304, and 4-4 305 are fixed on the gear shaft 4 301. The transmission mechanism 2 3 also includes a gear shaft 5 306 rotatably connected to the outer casing 1 101. Gears 5-1 307 and 5-2 308 are fixed on the gear shaft 5 306. The transmission mechanism 2 3 also includes a gear shaft 6 309 rotatably connected to the outer casing 1 101. The gear shaft 6 309 rotates... Gear 610 is dynamically connected, and a sliding gear 6211 is slidably mounted on gear shaft 6309. A sliding gear 6312 is fixed on sliding gear 6211. A shift lever fork assembly 313 is rotatably connected to sliding gear 6211. By shifting the shift lever fork assembly 313, the position of sliding gear 32207 can be adjusted so that sliding gear 32207 meshes with gear 51307 or gear 42303. When gear 51307 rotates, it can drive gear shaft 5306 and gear 52308 to rotate. Gear 43304 and gear 51000... When gear 208 engages, it drives gear shaft 401 to rotate. The shift lever fork assembly 3211 can also adjust sliding gear 32207 to engage with gear 42303, thus creating two gear positions. By shifting the shift lever fork assembly 2210, sliding gear 33208 can engage with gear 43304, or sliding gear 34209 can engage with gear 444305, thus creating two other gear positions: gear 611310 engages with gear 411302, and sliding gear 63312 engages with gear 444305. When gear shaft 4... When 301 rotates, gear 41 302 can drive gear sliding gear 63 312 to rotate through gear 61 310. Gear 44 305 can also drive sliding gear 63 312 to rotate through sliding gear 62 311, thereby driving sliding gear 62 311 to rotate. Sliding gear 62 311 and sliding gear 63 312 form a double gear. The shift lever fork assembly 313 can be used to adjust the engagement of sliding gear 62 311 with gear 43 304, or the engagement of sliding gear 63 312 with gear 44 305, forming two gears.

[0037] like Figure 2 , Figure 5 and Figure 6As shown, a transmission mechanism 4 is rotatably connected to the inner side of the outer casing mechanism 1. The transmission mechanism 4 includes a gear shaft 401 rotatably connected to the outer casing 101. Gears 402, 403, and 404 are rotatably connected to the gear shaft 401. The transmission mechanism 4 also includes a gear shaft 405 rotatably connected to the outer casing 101. Gears 406 and 407 are fixed on the gear shaft 405. A steering fork 408 is also connected to gear 406. Gear 403 meshes with a sliding gear 311. When the sliding gear 311 rotates, it will drive gear 403 to rotate. The rotation of the gear shaft 405 drives gears 71-402 and 73-404 to rotate. Gear shaft 405 is the travel output shaft, with both ends capable of independent rotation. Gears 71-402 and 73-404 are steering gears. Two steering forks 408 are provided; one fork can engage or disengage gear 71-402 with gear 72-403, and the other fork can engage or disengage gear 73-404 with gear 72-403. This creates a differential speed at both ends of the travel output shaft, achieving steering and synchronization functions. A transmission mechanism 45 is rotatably connected to the inner side of the outer casing mechanism 1. The transmission mechanism 45 includes a gear shaft 9 501 rotatably connected to the housing 1 101. A gear 9 1 502 is fixed on the gear shaft 9 501. A sliding gear 9 2 503 is also slidably disposed on the gear shaft 9 501. A sliding gear 9 3 504 is fixed on the sliding gear 9 2 503. A shift lever 4 508 is rotatably connected to the sliding gear 9 3 504. The transmission mechanism 45 also includes a gear shaft 10 505 rotatably connected to the housing 1 101. A spur gear 11 506 and a spur gear 12 507 are fixed on the gear shaft 10 505. Gear 9 1 502 meshes with gear 3 1 206. When the gear shaft 3 205 rotates, the gear 9 1 502 meshes with gear 3 1 206. The 206 gear can drive the 91502 gear to rotate, thereby causing the 9501 gear shaft to rotate. The 92503 and 93504 sliding gears form a sliding double gear. The position of the 92503 and 93504 sliding gears can be adjusted by the shift lever 4 508, so that the 92503 meshes with the 11506 flat gear. The 11506 flat gear can drive the 12507 flat gear to rotate through the 105 gear shaft, or the 93504 sliding gear meshes with the 12507 flat gear to directly drive the 12507 flat gear to rotate, forming two main gear positions.

[0038] like Figure 2 , Figure 7 and Figure 8As shown, the inner side of the outer casing 1 is also rotatably connected to a transmission mechanism 56 for transmission and gear shifting. Transmission mechanism 56 includes a transmission shaft 11 601 rotatably connected to the outer casing 2 103, a sliding gear 11-602 slidably mounted on the transmission shaft 11 601, and a gear 11-2 603 fixed on the transmission shaft 11 601. Transmission mechanism 56 also includes a transmission shaft 12 604 rotatably connected to the outer casing 2 103, with gears 12-1 605 and 12-2 606 fixed on the transmission shaft 12 604. Transmission mechanism 56 also includes... The housing 2103 is rotatably connected to the drive shaft 13607. Gear 131608 is fixed on the drive shaft 13607. A shift lever and fork assembly 5609 is rotatably connected to the sliding gear 111602. Gear 122606 meshes with gear 131608, and gear 112603 meshes with a spur gear 12507. When the spur gear 12507 rotates, it drives gear 112603 and the drive shaft 11601 to rotate, thereby driving the sliding gear 111602 to rotate. The sliding gear 111602 can be shifted by the shift lever. The fork assembly 5609 is activated, allowing it to directly mesh with gear 13-608, or with gear 12-605. This, in turn, drives gears 12-606 and 13-608 to rotate via drive shaft 12-604, creating two gear positions. Inside the housing mechanism 1, a transmission mechanism 67 is rotatably connected for transmitting and outputting power. Transmission mechanism 67 includes a drive shaft 14-701 rotatably connected to housing 2103, with gear 14-702 fixed on the drive shaft 14-701. Transmission mechanism 67 also includes components connected to the housing... The transmission mechanism 67 also includes a transmission shaft 16 705 rotatably connected to the housing 2103, with a gear 16 706 fixed on the transmission shaft 15 703. Gear 14 702 meshes with gear 13 608, gear 15 704 meshes with gear 14 702, and gear 16 706 meshes with gear 15 704. The transmission shaft 16 705 is a power output shaft that can output power to the drive wheels of the tiller.

[0039] In use, this utility model is installed inside the tiller housing, and the gear shaft 201 is connected to the engine output shaft. The tiller tires are then installed at both ends of the gear shaft 405 and the transmission shaft 705. When the engine starts, the transmission mechanisms 2, 3, 4, 5, 6, and 7 transmit power to the tires, thereby driving the tiller to till the land. During use, the user can shift gears using the external shifting device by moving the shift lever fork assembly 313, 210, 211, 508, and 609.

[0040] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A transmission mechanism for a medium-sized mini-tiller, comprising a housing mechanism (1) and a transmission mechanism two (3), characterized in that: The inner side of the outer shell mechanism (1) is rotatably connected to a transmission mechanism one (2), the inner side of the outer shell mechanism (1) is also rotatably connected to a transmission mechanism two (3), and the inner side of the outer shell mechanism (1) is rotatably connected to a transmission mechanism three (4). The inner side of the outer shell mechanism (1) is rotatably connected to the transmission mechanism four (5). The inner side of the outer shell mechanism (1) is also rotatably connected to a transmission mechanism five (6) for transmission and gear shifting, and the inner side of the outer shell mechanism (1) is also rotatably connected to a transmission mechanism six (7) for transmission and power output.

2. The transmission mechanism for a medium-sized mini-tiller according to claim 1, characterized in that: The outer shell mechanism (1) includes a first shell (101), a cover (102) is fixed on the first shell (101), and a second shell (103) is also fixed on the first shell (101).

3. The transmission mechanism for a medium-sized mini-tiller according to claim 2, characterized in that: The transmission mechanism one (2) includes a gear shaft one (201) rotatably connected to the housing one (101), on which a gear one (202) is fixed. The transmission mechanism one (2) also includes a gear shaft two (203) rotatably connected to the housing one (101), on which a gear two (204) is fixed. The transmission mechanism one (2) also includes a gear shaft three (205) rotatably connected to the housing one (101). Gear 31 (206) is fixed on the gear shaft 3 (205). Sliding gear 32 (207) is also slidably arranged on the gear shaft 3 (205). Sliding gear 33 (208) is also slidably arranged on the gear shaft 3 (205). Sliding gear 34 (209) is fixed on the sliding gear 33 (208). Shift lever fork assembly 2 (210) is rotatably connected to the sliding gear 33 (208). Shift lever fork assembly 3 (211) is rotatably connected to the sliding gear 32 (207).

4. The transmission mechanism for a medium-sized mini-tiller according to claim 2, characterized in that: The transmission mechanism two (3) includes a gear shaft four (301) rotatably connected to the housing one (101), and gears four one (302), four two (303), four three (304) and four four (305) are fixed on the gear shaft four (301). The transmission mechanism two (3) also includes a gear shaft five (306) rotatably connected to the housing one (101), and gears five one (307) and five two (308) are fixed on the gear shaft five (306). The transmission mechanism two (3) also includes a gear shaft six (309) rotatably connected to the housing one (101), and gear six one (310) is rotatably connected on the gear shaft six (309). A sliding gear six two (311) is also slidably arranged on the gear shaft six (309), and a sliding gear six three (312) is fixed on the sliding gear six two (311). A shift lever fork assembly one (313) is rotatably connected to the sliding gear six two (311).

5. The transmission mechanism for a medium-sized mini-tiller according to claim 2, characterized in that: The transmission mechanism three (4) includes a gear shaft seven (401) rotatably connected to the housing one (101), and gear seven one (402), gear seven two (403) and gear seven three (404) rotatably connected to the gear shaft seven (401). The transmission mechanism three (4) also includes a gear shaft eight (405) rotatably connected to the housing one (101), and gear eight one (406) and gear eight two (407) are fixed on the gear shaft eight (405). A steering fork (408) is connected to the gear shaft seven (401).

6. The transmission mechanism for a medium-sized mini-tiller according to claim 2, characterized in that: The transmission mechanism four (5) includes a gear shaft nine (501) rotatably connected to the housing one (101), a gear nine one (502) fixed on the gear shaft nine (501), a sliding gear nine two (503) slidably disposed on the gear shaft nine (501), a sliding gear nine three (504) fixed on the sliding gear nine two (503), the transmission mechanism four (5) also includes a gear shaft ten (505) rotatably connected to the housing one (101), a flat gear eleven (506) and a flat gear twelve (507) fixed on the gear shaft ten (505), and a shift lever four (508) rotatably connected to the sliding gear nine three (504).

7. The transmission mechanism for a medium-sized mini-tiller according to claim 2, characterized in that: The transmission mechanism five (6) includes a transmission shaft eleven (601) rotatably connected to the housing two (103), a sliding gear eleven (602) is slidably disposed on the transmission shaft eleven (601), and a gear eleven (603) is fixed on the transmission shaft eleven (601). The transmission mechanism five (6) also includes a transmission shaft twelve (604) rotatably connected to the housing two (103), a gear eleven (605) and a gear eleven (606) are fixed on the transmission shaft twelve (604). The transmission mechanism five (6) also includes a transmission shaft thirteen (607) rotatably connected to the housing two (103), a gear thirteen (608) is fixed on the transmission shaft thirteen (607), and a shift lever fork assembly five (609) is rotatably connected to the sliding gear eleven (602).

8. The transmission mechanism for a medium-sized mini-tiller according to claim 2, characterized in that: The transmission mechanism six (7) includes a transmission shaft fourteen (701) rotatably connected to the housing two (103), and a gear fourteen-one (702) is fixed on the transmission shaft fourteen (701). The transmission mechanism six (7) also includes a transmission shaft fifteen (703) rotatably connected to the housing two (103), and a gear fifteen-one (704) is fixed on the transmission shaft fifteen (703). The transmission mechanism six (7) also includes a transmission shaft sixteen (705) rotatably connected to the housing two (103), and a gear sixteen-one (706) is fixed on the transmission shaft sixteen (705).

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