阅读说明：本技术 微型链夹持单行大蒜联合收获机 (Miniature chain clamping single-row garlic combine harvester ) 是由 钟志堂 郭文琦 王成文 白明超 吴小伟 王成力 于 2019-11-05 设计创作，主要内容包括：本发明提供了一种微型链夹持单行大蒜联合收获机,包括主机架,主机架的前部转动连接有夹持支臂,夹持支臂通过正反扣总成与主机架连接,能够调节其上下转动角度；夹持支臂上安装限位轮机构、夹持机构和掘取刀机构；限位轮机构位于收获机的最前端,且前部安装分禾器,限位轮机构的后部一侧设有掘取刀机构,掘取刀机构的上方设置夹持机构,夹持机构的前端安装扶禾器,后端安装切秧机构；夹持机构沿其传动方向向上倾斜设置,且其前端位于限位轮机构的后侧,在水平方向上与收获机的横向中心线形成一定夹角；掘取刀机构、夹持机构和切秧机构位于限位轮机构的一侧,且能够整体相地于主机架上下转动调节,由动力系统提供动力。(The invention provides a mini-chain clamping single-row garlic combine harvester which comprises a main frame, wherein the front part of the main frame is rotatably connected with a clamping support arm, and the clamping support arm is connected with the main frame through a positive and negative buckle assembly and can adjust the vertical rotation angle of the clamping support arm; the clamping support arm is provided with a limiting wheel mechanism, a clamping mechanism and a digging and taking cutter mechanism; the limiting wheel mechanism is positioned at the foremost end of the harvester, the front part of the limiting wheel mechanism is provided with the seedling divider, one side of the rear part of the limiting wheel mechanism is provided with a digging and taking cutter mechanism, a clamping mechanism is arranged above the digging and taking cutter mechanism, the front end of the clamping mechanism is provided with the seedling lifter, and the rear end of the clamping mechanism is provided with the seedling cutting mechanism; the clamping mechanism is arranged in an upward inclined mode along the transmission direction of the clamping mechanism, the front end of the clamping mechanism is located on the rear side of the limiting wheel mechanism, and a certain included angle is formed between the clamping mechanism and the transverse center line of the harvester in the horizontal direction; the digging and taking cutter mechanism, the clamping mechanism and the seedling cutting mechanism are positioned on one side of the limiting wheel mechanism, can integrally rotate and adjust up and down on the main frame, and are powered by the power system.)

1. A mini chain clamping single-row garlic combine harvester is characterized by comprising a main frame, wherein the front part of the main frame is rotatably connected with a clamping support arm, and the clamping support arm is connected with the main frame through a positive and negative buckle assembly and can adjust the vertical rotation angle of the clamping support arm; the handrail, the walking mechanism and the power system are arranged on the main frame; the clamping support arm is provided with a limiting wheel mechanism, a clamping mechanism and a digging and taking cutter mechanism; the limiting wheel mechanism is positioned at the foremost end of the harvester, the front part of the limiting wheel mechanism is provided with the seedling divider, one side of the rear part of the limiting wheel mechanism is provided with a digging and taking cutter mechanism, a clamping mechanism is arranged above the digging and taking cutter mechanism, the front end of the clamping mechanism is provided with the seedling lifter, and the rear end of the clamping mechanism is provided with the seedling cutting mechanism; the clamping mechanism is arranged in an upward inclined mode along the transmission direction of the clamping mechanism, the front end of the clamping mechanism is located on the rear side of the limiting wheel mechanism, and a certain included angle is formed between the clamping mechanism and the transverse center line of the harvester in the horizontal direction; the power system provides power for the digging cutter mechanism, the clamping mechanism, the seedling cutting mechanism and the walking mechanism; the digging and taking cutter mechanism, the clamping mechanism and the seedling cutting mechanism are positioned on one side of the limiting wheel mechanism and can be integrally and vertically adjusted in a rotating manner on the main frame.

2. The combine harvester for single-row garlic clamped by a mini chain as claimed in claim 1, wherein the limiting wheel mechanism comprises a limiting wheel operating handle, a limiting wheel adjusting screw, a limiting wheel big sleeve, a limiting wheel support arm, a limiting wheel locking bolt, a limiting wheel small sleeve, a limiting wheel frame and a limiting wheel; the limiting wheel big sleeve is of a square tube structure, the top end of the limiting wheel big sleeve is rotatably connected with a limiting wheel adjusting rod through a bearing, the bottom end of the limiting wheel big sleeve is sleeved with a square tube-shaped limiting wheel small sleeve, and the limiting wheel adjusting rod is in threaded connection with a tube cavity of the limiting wheel small sleeve; a limit wheel control handle is mounted at the top end of the limit wheel adjusting rod, a locking screw hole is formed in a side arm of the limit wheel large sleeve, and the limit wheel small sleeve is fixed through a limit wheel locking bolt; the bottom end of the small sleeve of the limiting wheel is welded with a limiting wheel frame, a wheel shaft is arranged on the limiting wheel frame, and the limiting wheel is rotationally connected with the wheel shaft through a bearing; the middle part of the large sleeve of the limiting wheel is fixedly connected with the clamping support arm through the support arm; the front end of the limiting wheel mechanism is provided with a divider; the divider is an umbrella-shaped structure and comprises three rod pieces, wherein one end of each rod piece is welded and fixed, and the other end of each rod piece is fixedly connected with two ends of the wheel shaft and the small sleeve of the limiting wheel respectively.

3. The micro-chain clamping single-row garlic combine harvester according to claim 1, wherein the clamping mechanism comprises a commutator, a clamping gear box, a clamping frame, seedling discharging poking teeth, a clamping frame connecting plate and a clamping conveying mechanism; the clamping gear box is provided with a commutator, the commutator is in speed reduction transmission connection with the power system and transmits power to the clamping gear box; the clamping gear box is fixedly connected to the front end of the clamping support arm; the clamping and conveying mechanism is provided with a clamping frame, and the clamping frame is welded and fixed with the clamping support arm and the clamping gear box through a clamping frame connecting plate; the front end of the clamping and conveying mechanism is driven by a clamping gear box, and the tail end of the clamping and conveying mechanism is provided with seedling discharging and poking teeth and a seedling cutting knife.

4. The combine harvester according to claim 1, wherein the clamping mechanism forms an angle of 15 to 30 degrees with the transverse center line of the harvester in the horizontal direction; the grain lifter is arranged outside the front end of the clamping conveying arm and is parallel to the grain divider.

5. The combine harvester for single row garlic with mini chain clamping as claimed in claim 1, wherein the commutator is a cross commutator, both ends of the power input shaft are respectively installed on the top of the bearing mounting bracket through bearing seats, one end of the power input shaft is also provided with a clamping work sprocket, and the clamping work sprocket is connected with the output wheel of the power system through a chain; two gears with the same diameter are arranged in the clamping gear box through a bearing seat, and the two gears are meshed; the power output shaft of the commutator is connected with one of the gear keys in the clamping gear box.

6. The combine harvester according to claim 1, wherein the clamping and conveying mechanism comprises two oppositely rotating clamping chain assemblies horizontally arranged in parallel and clamped between them; the clamping chain assemblies respectively comprise a clamping cover plate, a clamping chain, a clamping base plate, a clamping driving chain wheel, a clamping driven chain wheel and a clamping tensioning device; the clamping driving chain wheel and the clamping driven chain wheel are driven by a clamping chain; the working side of the clamping chain is tensioned by a tensioning wheel mechanism, and the other side of the clamping chain is tensioned and limited by a tensioning long limiting plate; the clamping cover plate is buckled on the upper side and the lower side of the clamping chain and the clamping chain wheel and is connected with the clamping chain and the clamping chain wheel through a clamping base plate fixing bolt; the shaft for clamping the driving chain wheel and the clamping driven shaft are rotationally connected with the clamping cover plate through a bearing seat; the tensioning wheel mechanism and the tensioning long limiting plate are arranged in the clamping cover plate; the tensioning wheel mechanisms are arranged along the length of the clamping chain and respectively comprise a tensioning gear and a tensioning wheel frame, one end of the tensioning wheel frame is provided with the tensioning gear through a bearing, the other end of the tensioning wheel frame is provided with a tensioning spring, a bolt penetrates through the tensioning spring to fixedly connect the tensioning wheel frame with the clamping cover plate, and the tensioning gear is meshed with the clamping chain; the tensioning long limiting plate is a long-strip-shaped plate body, bolt holes are formed in two ends of the tensioning long limiting plate, a plurality of semicircular limiting grooves are uniformly distributed in one side of the tensioning long limiting plate, the bolt holes are fixed with the clamping cover plate through bolts and nuts, a limiting plate adjusting sleeve is clamped in the semicircular limiting grooves, a bolt penetrates into the limiting plate adjusting sleeve and is connected with the limiting plate adjusting sleeve, and the bolt penetrates through the clamping cover plate and is fixed through the nuts; the clamping driving chain wheels are respectively in key connection with wheel shafts, the other ends of the two wheel shafts are in key connection with gear wheels in the clamping gear box, and clamping sleeves are arranged outside the wheel shafts; the clamping driven chain wheels are rotatably connected with the clamping cover plate through sliding bearing boxes, the two clamping driven chain wheels are respectively and coaxially provided with seedling cutters, one clamping driven chain wheel is also coaxially provided with seedling discharging shifting teeth, the seedling discharging shifting teeth and the seedling cutters are respectively arranged on the upper side and the lower side of the clamping driven chain wheel, the seedling cutters are fixedly connected on a seedling cutter fixing base plate through bolts, and the top of a wheel shaft is provided with an anti-winding cover plate; a clamping chain tensioning baffle, a clamping chain tensioning screw, a clamping chain tensioning spring and a clamping chain tensioning pull plate are arranged on a clamping cover plate at the tail end of the clamping arm; the clamping chain tensioning baffle is fixedly connected with the clamping cover plate through a bolt, a clamping chain tensioning screw is in threaded connection with the clamping chain tensioning baffle, the other end of the clamping chain tensioning screw is connected with a clamping chain tensioning pull plate, a clamping chain tensioning spring is sleeved outside the clamping chain tensioning screw, and two ends of the clamping chain tensioning spring press elastically between the clamping chain tensioning baffle and the clamping chain tensioning pull plate; the end surface of the clamping chain tensioning pulling plate is arc-shaped and is matched and abutted with the side wall of the sliding bearing box; the clamping chain tensioning pull plate is enabled to compress the sliding bearing box all the time through the clamping chain tensioning spring, and the chain wheel of the clamping arm is ensured to be in a tensioning state.

7. The combine harvester according to claim 1, wherein the power system comprises an engine and a traveling gearbox, a power output wheel of the engine drives a gearbox input pulley of the main gearbox through a belt, the main gearbox is provided with two power output gears, one of the output gears drives the traveling gearbox through a chain, and the other is a gearbox output wheel which drives a clutch shaft input sprocket through a chain; the other end of the clutch shaft is in keyed connection with a clutch shaft output chain wheel which drives a digging cutter working chain wheel through a chain; a clamping driving chain wheel is coaxially arranged on the digging and taking cutter working chain wheel, and the clamping driving chain wheel drives the clamping working chain wheel through a chain; the clutch shaft is provided with a clutch, an input chain wheel of the clutch shaft is fixedly connected with a clutch female part, the clutch female part is connected with the off-shaft clutch shaft through a bearing, the clutch shaft is also provided with a clutch shifting fork and a clutch sub-part, and the clutch sub-part is in sliding connection with a clutch shaft key.

8. The micro chain-holding single-row garlic combine harvester according to claim 1, wherein the rear part of the main frame is provided with an engine chassis for fixedly mounting an engine; two substrates which are vertically arranged in parallel are also arranged on the main rack, and the substrates are provided with clutch shafts through small flange seats; a large flange seat is arranged below the base plate, a digging cutter driving shaft is connected with the large flange seat through a bearing, and the clamping driving chain wheel and the digging cutter working chain wheel are connected with the digging cutter driving shaft key; the top of the base plate is provided with a shaft hole, a hinge pin shaft is installed on the shaft hole, one end of the hinge pin shaft is provided with a pin hole, and the other end of the hinge pin shaft is provided with a clutch spring and is hinged with a clutch shifting fork; the travelling wheels of the travelling mechanism are connected through wheel shafts, and a travelling gearbox is mounted on each wheel shaft; one of the positive and negative buckle mounting seats of the positive and negative buckle mechanism is arranged on the side of the base body, and the other one of the positive and negative buckle mounting seats is arranged at the front part of the clamping support arm; one end of the clamping support arm is connected with the digging cutter driving shaft through a shaft sleeve.

9. The combine harvester of claim 1, wherein the digging cutter mechanism comprises a digging blade, a cutter tube, a cutter holder, a digging blade mounted at the front end of the cutter tube, a cutter holder mounted at the rear end of the cutter tube, the cutter holder is a rectangular frame, the front and rear parts of the frame are rotatably connected to the digging cutter fixing arm through a two-end bearing type power arm and a three-end bearing type power arm, respectively, the third bearing of the three-end bearing type power arm is rotatably connected to a cross shaft fixedly mounted between the holding arms, an eccentric link mechanism is further provided at the middle part of the cross shaft, the two ends of the eccentric link mechanism are connected to the three-end bearing type power arm, an eccentric wheel is fixedly connected to the middle part of the digging cutter driving shaft, and the eccentric wheel is shifted to drive the digging cutter mechanism to vibrate up and down to dig soil.

10. The combine harvester according to claim 1, wherein a handrail fixing member is fixedly connected to the top surface of the main gear box, handrail adjusting flanges are symmetrically arranged at both ends of the handrail fixing member and both ends of the handrail, the edge of the handrail adjusting flange is provided with a limit tooth, and the center is provided with a mounting hole, so that the handrail and the handrail fixing member can be fixedly mounted by bolts, and the angle of the handrail can be conveniently adjusted; a clutch control handle is arranged at one side of the handrail close to the handle and is connected with a hinge pin shaft of a clutch shifting fork through a pull wire; the clutch control handle is provided with a handle box fixed with the handrail and a handle rotationally hinged with the handle box, and a spring is arranged at the hinged position of the handle; the top of the handle box is provided with a sliding chute, the sliding chute is provided with at least two positioning grooves, the top end of the handle penetrates through the sliding chute, and a pull wire is arranged in the handle box through a bolt; the front side surface of the handle box is provided with a vertical wire outlet groove, and the stay wire penetrates out of the wire outlet groove to be connected with the pin hole of the clutch shifting fork.

Technical Field

The invention relates to the field of agricultural machinery, and particularly provides a mini-chain clamping single-row garlic combine harvester.

Background

China is the country with the largest garlic planting area all over the world, but most garlic planting areas in China mainly adopt a manual harvesting mode, the labor intensity is high, the working efficiency is low, and the timely harvesting of garlic is seriously influenced. At present, the development of garlic combine harvesters in developed countries has formed a system. The countries in Europe and America mainly adopt large-scale side-mounted traction type combine harvester, which not only has high operation efficiency, but also saves a large amount of labor force, and is suitable for large-area planting mode. The existing garlic combine harvester in China also gradually moves to a practical stage aiming at the Chinese garlic planting agriculture. However, there are the following problems: (1) the garlic combine harvester is expensive abroad and domestic, the after-sale maintenance cost is high, and the purchasing power of farmers is exceeded; (2) the technical requirements on operators are high; (3) as the garlic in the main garlic production area of China is mainly planted in small plots, the use of a large harvester is limited to a certain extent.

Disclosure of Invention

In order to solve the technical problems, the invention provides a mini-chain clamping single-row garlic combine harvester which is designed aiming at small plots of garlic producing areas in China, is flexible to use, can adjust digging and clamping angles and is reliable in performance.

The technical scheme adopted by the invention is as follows: a mini chain clamping single-row garlic combine harvester comprises a main frame, wherein the front part of the main frame is rotatably connected with a clamping support arm, and the clamping support arm is connected with the main frame through a positive and negative buckle assembly and can adjust the vertical rotation angle of the clamping support arm; the handrail, the walking mechanism and the power system are arranged on the main frame; the clamping support arm is provided with a limiting wheel mechanism, a clamping mechanism and a digging and taking cutter mechanism; the limiting wheel mechanism is positioned at the foremost end of the harvester, the front part of the limiting wheel mechanism is provided with the seedling divider, one side of the rear part of the limiting wheel mechanism is provided with a digging and taking cutter mechanism, a clamping mechanism is arranged above the digging and taking cutter mechanism, the front end of the clamping mechanism is provided with the seedling lifter, and the rear end of the clamping mechanism is provided with the seedling cutting mechanism; the clamping mechanism is arranged in an upward inclined mode along the transmission direction of the clamping mechanism, the front end of the clamping mechanism is located on the rear side of the limiting wheel mechanism, and a certain included angle is formed between the clamping mechanism and the transverse center line of the harvester in the horizontal direction; the power system provides power for the digging cutter mechanism, the clamping mechanism, the seedling cutting mechanism and the walking mechanism; the digging and taking cutter mechanism, the clamping mechanism and the seedling cutting mechanism are positioned on one side of the limiting wheel mechanism and can be integrally and vertically adjusted in a rotating manner on the main frame.

The limiting wheel mechanism comprises a limiting wheel control handle, a limiting wheel adjusting screw, a limiting wheel large sleeve, a limiting wheel support arm, a limiting wheel locking bolt, a limiting wheel small sleeve, a limiting wheel frame and a limiting wheel; the limiting wheel big sleeve is of a square tube structure, the top end of the limiting wheel big sleeve is rotatably connected with a limiting wheel adjusting rod through a bearing, the bottom end of the limiting wheel big sleeve is sleeved with a square tube-shaped limiting wheel small sleeve, and the limiting wheel adjusting rod is in threaded connection with a tube cavity of the limiting wheel small sleeve; a limit wheel control handle is mounted at the top end of the limit wheel adjusting rod, a locking screw hole is formed in a side arm of the limit wheel large sleeve, and the limit wheel small sleeve is fixed through a limit wheel locking bolt; the bottom end of the small sleeve of the limiting wheel is welded with a limiting wheel frame, a wheel shaft is arranged on the limiting wheel frame, and the limiting wheel is rotationally connected with the wheel shaft through a bearing; the middle part of the large sleeve of the limiting wheel is fixedly connected with the clamping support arm through the support arm; the front end of the limiting wheel mechanism is provided with a nearside divider.

The divider is an umbrella-shaped structure and comprises three rod pieces, wherein one end of each rod piece is welded and fixed, and the other end of each rod piece is fixedly connected with two ends of the wheel shaft and the small sleeve of the limiting wheel respectively.

The clamping mechanism comprises a commutator, a clamping gear box, a clamping frame, seedling discharging and shifting teeth, a clamping frame connecting plate and a clamping and conveying mechanism; the clamping gear box is provided with a commutator, the commutator is in speed reduction transmission connection with the power system and transmits power to the clamping gear box; the clamping gear box is fixedly connected to the front end of the clamping support arm; the clamping and conveying mechanism is provided with a clamping frame, and the clamping frame is welded and fixed with the clamping support arm and the clamping gear box through a clamping frame connecting plate; the front end of the clamping and conveying mechanism is driven by a clamping gear box, and the tail end of the clamping and conveying mechanism is provided with seedling discharging and poking teeth and a seedling cutting knife.

And the horizontal direction of the clamping mechanism and the transverse central line of the harvester form a certain included angle of 15-30 degrees.

The commutator is a cross commutator, two ends of a power input shaft of the commutator are respectively arranged at the top of the bearing mounting bracket through bearing seats, one end of the power input shaft is also provided with a clamping working chain wheel, and the clamping working chain wheel is connected with an output wheel of a power system through a chain; two gears with the same diameter are arranged in the clamping gear box through a bearing seat, and the two gears are meshed; the power output shaft of the commutator is connected with one of the gear keys in the clamping gear box.

The clamping and conveying mechanism consists of two clamping chain assemblies which rotate oppositely, the two clamping chain assemblies are horizontally arranged in parallel, and the two clamping chain assemblies are clamped; the clamping chain assemblies respectively comprise a clamping cover plate, a clamping chain, a clamping base plate, a clamping driving chain wheel, a clamping driven chain wheel and a clamping tensioning device; the clamping driving chain wheel and the clamping driven chain wheel are driven by a clamping chain; the working side of the clamping chain is tensioned by a tensioning wheel mechanism, and the other side of the clamping chain is tensioned and limited by a tensioning long limiting plate; the clamping cover plate is buckled on the upper side and the lower side of the clamping chain and the clamping chain wheel and is connected with the clamping chain and the clamping chain wheel through a clamping base plate fixing bolt; the shaft for clamping the driving chain wheel and the clamping driven shaft are rotationally connected with the clamping cover plate through a bearing seat; the tensioning wheel mechanism and the tensioning long limiting plate are arranged in the clamping cover plate.

The tensioning wheel mechanisms are arranged along the length of the clamping chain and respectively comprise a tensioning gear and a tensioning wheel frame, one end of the tensioning wheel frame is provided with the tensioning gear through a bearing, the other end of the tensioning wheel frame is provided with a tensioning spring, a bolt penetrates through the tensioning spring to fixedly connect the tensioning wheel frame with the clamping cover plate, and the tensioning gear is meshed with the clamping chain; the tensioning strip limiting plate is a strip-shaped plate body, bolt holes are formed in two ends of the tensioning strip limiting plate, a plurality of semicircular limiting grooves are evenly distributed in one side of the tensioning strip limiting plate, the bolt holes are fixed with the clamping cover plate through bolts and nuts, a limiting plate adjusting sleeve is clamped in the semicircular limiting groove, bolts penetrate into the limiting plate adjusting sleeve and are connected with the limiting plate adjusting sleeve, and the bolts penetrate through the clamping cover plate and are fixed through the nuts.

The clamping driving chain wheels are respectively in key connection with wheel shafts, the other ends of the two wheel shafts are in key connection with gear wheels in the clamping gear box, and clamping sleeves are arranged outside the wheel shafts; the clamping driven chain wheels are rotatably connected with the clamping cover plate through sliding bearing boxes, the two clamping driven chain wheels are respectively and coaxially provided with seedling cutters, one clamping driven chain wheel is also coaxially provided with seedling discharging shifting teeth, the seedling discharging shifting teeth and the seedling cutters are respectively arranged on the upper side and the lower side of the clamping driven chain wheel, the seedling cutters are fixedly connected on a seedling cutter fixing base plate through bolts, and the top of a wheel shaft is provided with an anti-winding cover plate.

A clamping chain tensioning baffle, a clamping chain tensioning screw, a clamping chain tensioning spring and a clamping chain tensioning pull plate are arranged on a clamping cover plate at the tail end of the clamping arm; the clamping chain tensioning baffle is fixedly connected with the clamping cover plate through a bolt, a clamping chain tensioning screw is in threaded connection with the clamping chain tensioning baffle, the other end of the clamping chain tensioning screw is connected with a clamping chain tensioning pull plate, a clamping chain tensioning spring is sleeved outside the clamping chain tensioning screw, and two ends of the clamping chain tensioning spring press elastically between the clamping chain tensioning baffle and the clamping chain tensioning pull plate; the end surface of the clamping chain tensioning pulling plate is arc-shaped and is matched and abutted with the side wall of the sliding bearing box; the clamping chain tensioning pull plate is enabled to compress the sliding bearing box all the time through the clamping chain tensioning spring, and the chain wheel of the clamping arm is ensured to be in a tensioning state.

The grain lifter is arranged on the outer side of the front end of the clamping conveying arm and is parallel to the grain divider.

The power system comprises an engine and a traveling gearbox, wherein a power output wheel of the engine drives a gearbox input belt pulley of a main gearbox through a belt, the main gearbox is provided with two power output gears, one output gear drives the traveling gearbox through a chain, the other output gear is a gearbox output wheel, and a clutch shaft is driven by the chain to input a chain wheel; the other end of the clutch shaft is in keyed connection with a clutch shaft output chain wheel which drives a digging cutter working chain wheel through a chain; the digging and taking cutter working chain wheel is coaxially provided with a clamping driving chain wheel which drives the clamping working chain wheel through a chain.

The clutch shaft is provided with a clutch, an input chain wheel of the clutch shaft is fixedly connected with a clutch female part, the clutch female part is connected with the off-shaft clutch shaft through a bearing, the clutch shaft is also provided with a clutch shifting fork and a clutch sub-part, and the clutch sub-part is in sliding connection with a clutch shaft key.

An engine chassis for fixedly mounting an engine is arranged at the rear part of the main frame; two substrates which are vertically arranged in parallel are also arranged on the main rack, and the substrates are provided with clutch shafts through small flange seats; a large flange seat is arranged below the base plate, a digging cutter driving shaft is connected with the large flange seat through a bearing, and the clamping driving chain wheel and the digging cutter working chain wheel are connected with the digging cutter driving shaft in a key mode.

The top of the base plate is provided with a shaft hole, a hinge pin shaft is installed on the shaft hole, one end of the hinge pin shaft is provided with a pin hole, and the other end of the hinge pin shaft is provided with a clutch spring and hinged with a clutch shifting fork.

The walking wheels of the walking mechanism are connected through wheel shafts, and a walking gearbox is mounted on each wheel shaft.

One of the positive and negative buckle mounting seats of the positive and negative buckle mechanism is arranged on the side of the base body, and the other one of the positive and negative buckle mounting seats is arranged at the front part of the clamping support arm; one end of the clamping support arm is connected with the digging cutter driving shaft through a shaft sleeve.

The digging and taking cutter mechanism comprises a digging and taking blade, a cutter pipe, a cutter rest and a digging and taking blade arranged at the front end of the cutter pipe, the cutter rest is arranged at the rear end of the cutter pipe, the cutter rest is a rectangular frame, the front part and the rear part of the frame are respectively connected with a digging and taking cutter fixing support arm in a rotating mode through a bearing type power arm at two ends and a bearing type power arm at three ends, a third bearing of the bearing type power arm at three ends is connected with a cross shaft fixedly arranged between clamping support arms in a rotating mode, an eccentric connecting rod mechanism is further arranged in the middle of the cross shaft, two ends of the eccentric connecting rod mechanism are connected with the bearing type power arm at three ends into a whole, an eccentric wheel is fixedly connected to the middle of a digging and taking cutter driving shaft.

The top surface of main gear box has linked firmly the handrail mounting, and the both ends of handrail mounting and the both ends symmetry of handrail are provided with handrail adjusting flange, and handrail adjusting flange's edge is provided with spacing tooth, and the center is equipped with the mounting hole, can be through bolt with handrail and handrail mounting fixed mounting to the angle of handrail can conveniently be adjusted.

And a clutch control handle is arranged at a position, close to the handle, on one side of the handrail and is connected with a hinge pin shaft of the clutch shifting fork through a pull wire. The clutch control handle is provided with a handle box fixed with the handrail and a handle rotationally hinged with the handle box, and a spring is arranged at the hinged position of the handle; the top of the handle box is provided with a sliding chute, the sliding chute is provided with at least two positioning grooves, the top end of the handle penetrates through the sliding chute, and a pull wire is arranged in the handle box through a bolt; the front side surface of the handle box is provided with a vertical wire outlet groove, and the stay wire penetrates out of the wire outlet groove to be connected with the pin hole of the clutch shifting fork.

The invention has the beneficial effects that: 1. a double-limiting wheel structure is adopted, so that proper digging depth of the digging cutter is ensured during working; 2. the aligning and seedling cutting integrated device is adopted, so that the structure is simple and compact, and the seedling cutting consistency is ensured; 3. using a serial cross hollow reversing device; 4. the working part and the advancing direction form a certain included angle, so that the sight of an operator is not influenced when the operator advances during working; the garlic planter has the advantages of compact structure, light weight and low cost, and is suitable for small-scale garlic growers to purchase and use, so the garlic planter has great social and economic values.

Drawings

Fig. 1 is a shaft view of a mini-chain clamped single row garlic combine.

Fig. 2 is a schematic structural view of a power transmission system of the mini-chain clamping single-row garlic combine harvester.

Fig. 3 is an axial view of a clamping mechanism of the combine harvester for clamping single row garlic by a mini chain.

In the figure, 1, a limiting wheel control handle, 2, a limiting wheel adjusting screw rod, 3, a limiting wheel large sleeve, 4, a limiting wheel support arm, 5, a clamping work chain wheel, 6, a bearing seat, 7, a commutator, 8, a commutator shaft, 9, a limiting wheel locking bolt, 10, a bearing mounting bracket, 11, a limiting wheel small sleeve, 12, a limiting wheel frame, 13, a clamping gear box, 14, a limiting wheel 15, a divider, 16, a clamping sleeve, 17, a main frame, 18, a grain lifter, 19, a digging blade, 20, a clamping cover plate, 21, a cutter pipe, 22, a clamping chain, 23, a two-end bearing type power arm, 24, a digging cutter fixing support arm, 25, a cutter rest, 26, a three-end bearing type power arm, 27, a sliding bearing box, 28, a main gearbox, 29, a clamping base plate, 30, a clamping frame, 31, a traveling gearbox, 32, a traveling wheel, 33, a clamping frame, 34, an engine chassis, 35. a stay wire, 36 a clamping chain tensioning baffle, 37 a clamping chain tensioning screw, 38 a clamping chain tensioning spring, 39 a clamping chain tensioning pull plate, 40 a seedling cutter, 41 seedling discharging poking teeth, 42 an anti-winding cover plate, 43 an engine, 44 a clutch control handle, 45 a handrail, 46 a gearbox output wheel, 47 a handrail fixing piece, 48 a handrail adjusting flange, 49 a clutch shifting fork, 50 a clutch sub piece, 51 a gearbox input belt wheel, 52 a clutch shaft, 53 a clutch spring, 54 a clutch female piece, 55 a positive and negative buckle mounting seat, 56 a positive and negative buckle assembly, 57 a clamping support arm, 58 a chain, 59 a clamping driving sprocket wheel, 60 a digging cutter driving shaft, 61 a digging cutter working sprocket wheel, 69-1 a tensioning gear, 69-2 a tensioning wheel frame, 62 a small flange seat, 63 a large flange seat, 64 an eccentric connecting rod mechanism, 65. the automatic seedling cutting machine comprises a clutch shaft output chain wheel, 66 base plates, 67 limit plates, 68 clamping driving chain wheels, 69 tensioning wheel mechanisms, 69-1 tensioning gears, 61-2 tensioning wheel frames, 70 tensioning strip limit plates, 71 clamping base plate fixing bolts, 72 limit plate adjusting sleeves, 73 clamping driven chain wheels, 74 clamping driven shafts, 75 seedling cutting knife fixing base plates and 76 tensioning springs.

Detailed Description

As shown in fig. 1, a mini chain clamping single row garlic combine harvester comprises a main frame 17, wherein the front part of the main frame 17 is rotatably connected with a clamping arm 57, and the clamping arm 57 is connected with the main frame 17 through a positive and negative buckle assembly 56 and can adjust the vertical rotation angle of the clamping arm; the main frame 17 is provided with a handrail 45, a travelling mechanism and a power system; the clamping support arm 57 is provided with a limiting wheel mechanism, a clamping mechanism and a digging and taking cutter mechanism; the limiting wheel mechanism is positioned at the foremost end of the harvester, the front part of the limiting wheel mechanism is provided with the seedling divider 15, one side of the rear part of the limiting wheel mechanism is provided with a digging and taking cutter mechanism, a clamping mechanism is arranged above the digging and taking cutter mechanism, the front end of the clamping mechanism is provided with the seedling lifter 18, and the rear end of the clamping mechanism is provided with the seedling cutting mechanism; the clamping mechanism is arranged in an upward inclined mode along the transmission direction of the clamping mechanism, the front end of the clamping mechanism is located on the rear side of the limiting wheel mechanism, and a certain included angle is formed between the clamping mechanism and the transverse center line of the harvester in the horizontal direction; the power system provides power for the digging cutter mechanism, the clamping mechanism, the seedling cutting mechanism and the walking mechanism; the digging and taking cutter mechanism, the clamping mechanism and the seedling cutting mechanism are positioned on one side of the limiting wheel mechanism and can be integrally and vertically adjusted in a rotating manner on the main frame 17.

The limiting wheel mechanism comprises a limiting wheel control handle 1, a limiting wheel adjusting screw 2, a limiting wheel large sleeve 3, a limiting wheel support arm 4, a limiting wheel locking bolt 9, a limiting wheel small sleeve 11, a limiting wheel frame 12 and a limiting wheel 14; the limiting wheel big sleeve 3 is of a square tube structure, the top end of the limiting wheel big sleeve is rotatably connected with a limiting wheel adjusting rod 2 through a bearing, the bottom end of the limiting wheel big sleeve is sleeved with a square tube-shaped limiting wheel small sleeve 11, and the limiting wheel adjusting rod 2 is in threaded connection with a tube cavity of the limiting wheel small sleeve 11; a limiting wheel control handle 1 is mounted at the top end of the limiting wheel adjusting rod 2, a locking screw hole is formed in a side arm of the limiting wheel large sleeve 3, and a limiting wheel small sleeve 11 is fixed through a limiting wheel locking bolt 9; the bottom end of the small sleeve 11 of the limiting wheel is welded with a limiting wheel frame 12, the limiting wheel frame 12 is provided with a wheel shaft, and the limiting wheel 14 is rotatably connected with the wheel shaft through a bearing; the middle part of the limiting wheel large sleeve 3 is fixedly connected with the clamping support arm through a support arm 5; the front end of the limiting wheel mechanism is provided with a nearside divider 15.

The divider 15 is an umbrella-shaped structure and comprises three rod pieces, wherein one end of each rod piece is welded and fixed, and the other end of each rod piece is fixedly connected with the two ends of the wheel shaft and the small limiting wheel sleeve 11 respectively.

The clamping mechanism comprises a commutator 7, a clamping gear box 13, a clamping frame 30, seedling discharging and poking teeth 41, a clamping frame connecting plate 33 and a clamping conveying mechanism; the clamping gear box 13 is provided with a commutator 7, the commutator 7 is in speed reduction transmission connection with the power system, and transmits power to the clamping gear box 13; the clamping gear box 13 is fixedly connected to the front end of the clamping support arm 57; the clamping and conveying mechanism is provided with a clamping frame 30, and the clamping frame 30 is welded and fixed with the clamping support arm 57 and the clamping gear box 13 through a clamping frame connecting plate 33; the front end of the clamping and conveying mechanism is driven by a clamping gear box 13, and the tail end is provided with a seedling discharging and poking tooth 41 and a seedling cutting knife 40.

And the horizontal direction of the clamping mechanism and the transverse central line of the harvester form a certain included angle of 15-30 degrees.

The commutator 7 is a cross commutator, two ends of a power input shaft of the commutator are respectively arranged at the top of the bearing mounting bracket 10 through bearing seats, one end of the power input shaft is also provided with a clamping working chain wheel 5, and the clamping working chain wheel 5 is connected with an output wheel of a power system through a chain 58; two gears with the same diameter are arranged in the clamping gear box 13 through a bearing seat, and the two gears are meshed; the power take-off shaft of the commutator 7 is keyed to one of the gears in the clamping gearbox 13.

As shown in fig. 3, the clamping and conveying mechanism is composed of two clamping chain assemblies rotating in opposite directions, the two clamping chain assemblies are horizontally arranged in parallel, and a clamping state is formed between the two clamping chain assemblies; the clamping chain assemblies respectively comprise a clamping cover plate 20, a clamping chain 22, a clamping base plate, a clamping driving chain wheel 68, a clamping driven chain wheel 73 and a clamping tensioning device; the clamping driving chain wheel 68 and the clamping driven chain wheel 73 are driven by the clamping chain 22; the working side of the clamping chain 22 is tensioned by a tensioning wheel mechanism 69, and the other side of the clamping chain is tensioned and limited by a tensioning long limiting plate 70; the clamping cover plate 20 is buckled on the upper side and the lower side of the clamping chain 22 and the clamping chain wheel and is connected through a clamping base plate fixing bolt 71; the shaft of the clamping driving chain wheel 68 and the clamping driven shaft 74 are rotationally connected with the clamping cover plate 20 through a bearing seat; the tension wheel mechanism 69 and the tension strip limiting plate 70 are installed in the clamping cover plate 20.

A plurality of tensioning wheel mechanisms 69 are arranged along the length of the clamping chain 22 and respectively comprise a tensioning gear 69-1 and a tensioning wheel frame 69-2, one end of the tensioning wheel frame 69-2 is provided with the tensioning gear 69-1 through a bearing, the other end of the tensioning wheel frame 69-2 is provided with a tensioning spring 76, a bolt penetrates through the tensioning spring 76 to fixedly connect the tensioning wheel frame 69-2 with the clamping cover plate 20, and the tensioning gear 69-1 is meshed with the clamping chain 22; the rectangular limiting plate 70 of tensioning be rectangular shape plate body, its both ends are equipped with the bolt hole, one side equipartition has a plurality of semi-circular spacing grooves, the bolt hole passes through bolt and nut and centre gripping apron 20 is fixed, semi-circular spacing groove department clamps has limiting plate adjusting collar 72, penetrates in the limiting plate adjusting collar 72 and is connected with the bolt, the bolt passes centre gripping apron 20, it is fixed through the nut. An arc limiting plate 67 is arranged on the working side, close to the clamping driving chain wheel 68, of the at least one clamping chain assembly, and the arc limiting plate 67 is fixedly connected with the clamping cover plate 20 through bolts.

The clamping driving chain wheels 68 are respectively in key connection with wheel shafts, the other ends of the two wheel shafts are in key connection with gear wheels in the clamping gear box 13, and clamping sleeves 16 are arranged outside the wheel shafts; the clamping driven chain wheels 73 are rotatably connected with the clamping cover plate 20 through sliding bearing boxes 27, seedling cutting knives 40 are respectively and coaxially arranged on the two clamping driven chain wheels 73, one clamping driven chain wheel 73 is also coaxially provided with seedling discharging shifting teeth 41, the seedling discharging shifting teeth 41 and the seedling cutting knives 75 are respectively arranged on the upper side and the lower side of the clamping driven chain wheel 73, the seedling cutting knives 40 are fixedly connected on seedling cutting knife fixing base plates 75 through bolts, and the top of a wheel shaft is provided with an anti-winding cover plate 42.

A clamping chain tensioning baffle plate 36, a clamping chain tensioning screw 37, a clamping chain tensioning spring 38 and a clamping chain tensioning pull plate 39 are arranged on the clamping cover plate 20 at the tail end of the clamping arm; the clamping chain tensioning baffle plate 36 is fixedly connected with the clamping cover plate 20 through a bolt, a clamping chain tensioning screw 37 is in threaded connection with the clamping chain tensioning baffle plate 36, the other end of the clamping chain tensioning screw 37 is connected with a clamping chain tensioning pull plate 39, a clamping chain tensioning spring 38 is sleeved outside the clamping chain tensioning screw 37, and two ends of the clamping chain tensioning spring 38 are in elastic compression between the clamping chain tensioning baffle plate 36 and the clamping chain tensioning pull plate 39; the end surface of the clamping chain tensioning pulling plate 39 is arc-shaped and is matched and propped against the side wall of the sliding bearing box 27; the clamping chain tensioning plate 39 is always pressed against the sliding bearing box 27 by the clamping chain tensioning spring 38, ensuring that the chain wheel of the clamping arm is in a tensioned state.

The grain lifter 18 is arranged outside the front end of the clamping conveying arm and is parallel to the grain divider 15.

As shown in fig. 1 and fig. 2, the power system comprises an engine 43 and a traveling gearbox 31, wherein a power output wheel of the engine 43 drives a gearbox input belt pulley 51 of a main gearbox 28 through a belt, the main gearbox 28 is provided with two power output gears, one of the power output gears drives the traveling gearbox 31 through a chain, and the other power output gear is a gearbox output wheel 46 and drives a clutch shaft input chain wheel through a chain 58; the other end of the clutch shaft 49 is keyed with a clutch shaft output chain wheel 65, and the clutch output chain wheel 65 drives the digging cutter working chain wheel 61 through a chain; the digging cutter working sprocket 61 is coaxially provided with a clamping driving sprocket 59, and the clamping driving sprocket 59 drives the clamping working sprocket 5 through a chain 58.

The clutch shaft 52 is provided with a clutch, an input chain wheel of the clutch shaft is fixedly connected with a clutch female part 54, the clutch female part 54 is connected with the off-shaft 52 through a bearing, the clutch shaft 52 is also provided with a clutch shifting fork 49 and a clutch sub-part 50, and the clutch sub-part 50 is in key sliding connection with the clutch shaft 49.

An engine chassis 34 for fixedly mounting an engine 43 is arranged at the rear part of the main frame 17; two vertical base plates 66 arranged in parallel are also arranged on the main frame 17, and the base plates 66 are provided with the clutch shaft 52 through the small flange seat 62; a large flange seat 63 is arranged below the base plate 66, the digging cutter driving shaft 60 is connected with the large flange seat 63 through a bearing, and the clamping driving chain wheel 59 and the digging cutter working chain wheel 61 are connected with the digging cutter driving shaft 60 in a key mode.

The top of the base plate 66 is provided with a shaft hole, a hinge pin shaft is installed on the shaft hole, one end of the hinge pin shaft is provided with a pin hole, and the other end of the hinge pin shaft is provided with a clutch spring 53 and is hinged with the clutch shifting fork 49.

The walking wheels 32 of the walking mechanism are connected through wheel shafts, and the wheel shafts are provided with walking gear boxes 31.

One of the positive and negative buckle mounting seats 59 of the positive and negative buckle mechanism is arranged at the side of the base body 66, and the other one is arranged at the front part of the clamping support arm 57; one end of the gripping arm 57 is connected to the digging cutter drive shaft 60 by a bushing.

The digging and taking cutter mechanism comprises a digging and taking blade 19, a cutter pipe 21, a cutter rest 25, wherein the digging and taking blade 19 is installed at the front end of the cutter pipe 21, the cutter rest 25 is installed at the rear end of the cutter pipe, the cutter rest 25 is a rectangular frame, the front part and the rear part of the frame are respectively and rotatably connected with a digging and taking cutter fixing support arm 24 through a two-end bearing type power arm 23 and a three-end bearing type power arm 26, a third bearing of the three-end bearing type power arm 26 is rotatably connected with a cross shaft fixedly installed between clamping support arms 57, an eccentric connecting rod mechanism 64 is further arranged in the middle of the cross shaft, two ends of the eccentric connecting rod mechanism 64 are connected with the three-end bearing type power arm 26 into a whole, an eccentric wheel is fixedly connected to the middle of a digging and taking cutter driving shaft 60, and the eccentric wheel.

The top surface of the main gearbox 28 is fixedly connected with a handrail fixing element 47, two ends of the handrail fixing element 47 and two ends of the handrail 45 are symmetrically provided with handrail adjusting flanges 48, the edges of the handrail adjusting flanges 48 are provided with limiting teeth, the center of each handrail adjusting flange is provided with a mounting hole, the handrail 45 and the handrail fixing element 47 can be fixedly mounted through bolts, and the angle of the handrail 45 can be conveniently adjusted.

A clutch control handle 44 is arranged at a position, close to the handle, on one side of the handrail 45, and the clutch control handle 44 is connected with a hinge pin shaft of a clutch shifting fork 49 through a pull wire. The clutch control handle 44 is provided with a handle box fixed with the handrail 45 and a handle rotationally hinged with the handle box, and a spring is arranged at the hinged position of the handle; the top of the handle box is provided with a sliding chute, the sliding chute is provided with at least two positioning grooves, the top end of the handle penetrates through the sliding chute, and a pull wire 35 is arranged in the handle box through a bolt; the front side surface of the handle box is provided with a vertical wire outlet groove, and the stay wire 35 penetrates out of the wire outlet groove to be connected with a pin hole of the clutch shifting fork.