CN114503812B - Diameter and depth adjustable hole type rice seed sowing device sowing wheel - Google Patents

Abstract

The application discloses a seeding wheel of a hole-type rice seeding apparatus with adjustable diameter and depth, which comprises an outer wheel, a driving gear, an end cover, a main shaft, an adjusting boss, a push rod device, a boss limiting ring, a depth reset spring and a bearing, wherein one end of the push rod device is nested in a seeding through hole on the outer wheel, the other end of the push rod device is matched with a chute rail on the adjusting boss, the adjusting boss is arranged on the main shaft through the bearing, the boss limiting ring and the depth reset spring are sleeved on the main shaft, the driving gear and the end cover are respectively arranged on two end surfaces of the outer wheel, one end of the main shaft penetrates through a central hole of the driving gear, and the other end of the main shaft penetrates through a central hole of the end cover; the application has the advantages that: 1. the depth of the sowing holes of the sowing wheel and the diameter of the sowing holes can be simultaneously adjusted so as to simultaneously meet the precision sowing requirements of different varieties and different sowing amounts of rice; 2. compact structure, job stabilization.

Description

A hole type rice seed metering wheel with adjustable diameter and depth

Technical field

The invention belongs to the technical field of agricultural machinery. Specifically, it relates to a hole-type rice seeding device seeding wheel with adjustable diameter and depth.

Background technique

Rice is my country's main food crop. The annual planting area is about 30 million hectares. There are about 150 million rice farmers, accounting for about 60% of the total number of farmers. The annual rice output is nearly 200 million tons, accounting for 40% of the country's total grain. This shows that rice plays an important role in China’s food security. With the transfer of rural labor force and the development of agricultural machinery, rice mechanical direct seeding has become increasingly popular among farmers because it can save the seedling raising and transplanting links, has the advantages of high operating efficiency, cost saving and labor saving.

Due to the wide variety of rice varieties and large differences in physical and mechanical properties, existing seed metering devices cannot simultaneously meet the requirements for precise sowing of different rice varieties and different sowing rates, especially indica and japonica rice buds with a length exceeding 11 mm. requirements for precision sowing. When the seeding wheel rotates quickly, there are common phenomena of less sowing and missed sowing. Therefore, in order to simultaneously meet the above operational requirements or make up for the above defects, there is an urgent need to invent a hole-type rice seeding device seeding wheel with adjustable diameter and depth.

Contents of the invention

In view of the above-mentioned prior art, the purpose of the present invention is to overcome the deficiencies in the prior art and adapt to practical needs, thereby providing a hole-type rice seeding device seeding wheel with adjustable diameter and depth.

In order to achieve the above objects, the technical solutions adopted by the present invention are:

A hole-type rice seed metering device seeding wheel with adjustable diameter and depth, including an outer wheel, a driving gear, an end cover, a main shaft, an adjusting boss, a ejector device, a boss limit ring, a depth return spring and a bearing, and an outer wheel There are multiple seeding through holes evenly distributed on the circumference that point to the center of the circle. There are multiple sets of chute rails evenly distributed on the adjustment boss, and each set of chute rails includes two opposite chute rails. The ejector device is equipped with multiple sets of chute rails. One end of the multiple ejector devices is nested with a set of chute rails, and the other end is nested in the sowing through hole. The ejector device and the sowing through hole form a seeding hole with variable diameter and depth, which can be adjusted Both ends of the boss are respectively installed on the spindle through bearings. The boss limit ring and the depth return spring are sleeved on the spindle. The depth return spring is located between the adjusting boss and the boss limit ring. The boss limit ring is located on the spindle. Between the depth return spring and the drive gear, the drive gear and the end cover are respectively installed on both ends of the outer wheel. The main shaft passes through the middle of the drive gear, the middle of the outer wheel, the boss limit ring, the depth return spring, the bearing, and the middle of the adjustment boss in sequence. , the middle part of the bearing and the end cover, and are firmly connected by bolts. After being fixed, the two ends of the main shaft are exposed outside the driving gear and the end cover respectively, and the adjusting boss, ejector device, boss limit ring, depth return spring and bearing are all Located inside the outer wheel.

Furthermore, the adjusting boss has a trapezoidal rotary structure. Both ends of the trapezoidal rotary structure are provided with bearing mounting counterbore for installing the bearing. A spindle through hole for the main shaft to pass is provided between the two bearing mounting counterbores. The trapezoidal rotary body structure is There are 8 sets of chute rails evenly distributed on the outer surface of the rotary structure. Each set of chute rails is equipped with a control groove at the middle and upper end. Each set of chute rails is equipped with an adjustment rail at the middle and lower end. There are passages between the adjustment rails and the control grooves. Excessive bevel connection.

Further, the ejector device includes a movable adjustment ejector rod, an outer ring ejector rod, a fixed inner ring ejector rod, a diameter adjustment inner core and an ejector rod return compression spring. There is a through hole in the middle of the mobile adjustment ejector rod for installing the diameter adjustment inner core. hole, one end of the diameter adjustment inner core passes through the through hole of the movable adjustment ejector rod, and the other end is nested and installed with one end of the outer ring ejector rod. One end of the fixed inner ring ejector rod is nested and installed inside the outer ring ejector rod and is exposed. The outer ring ejects the ejector pin, and its exposed end is threadedly connected to one end of the moving adjustment ejector pin. The other end of the fixed inner ring ejector pin is located within the other end of the outer ring ejector pin and between the other end of the outer ring ejector pin. A cavity is formed, and the ejector rod return compression spring is placed inside the cavity formed by the fixed inner ring ejector rod and the outer ring ejector rod at the other end, and the ejector rod return compression spring is in a compressed state. Under the action of the elastic force of the ejector rod return compression spring so that the outer bottom surface of one end of the outer ring ejection ejector is always in contact with the other end of the diameter adjustment inner core. The other end of the mobile adjustment ejector rod is nested and connected with the chute rail of the adjustment boss. The other end of the outer ring ejection ejector rod is connected with the The seeding through holes on the outer wheel are nested.

Furthermore, one end of the mobile adjustment ejector rod is a mounting cylinder, and the other end is an inclined ejector rod. The end of the inclined ejector rod is an inclined plane. There are guide rails on both sides of the inclined plane that cooperate with the inclined groove rails on the adjustment boss to realize adjustment according to the operation needs. Adjustment of seeding hole diameter and seeding hole depth; the middle part of the slope is provided with a chute that matches the adjustment track on the adjustment boss, and the bottom surface of the chute is parallel to the slope, and the end of the installation cylinder is set in sequence toward the direction of the inclined ejector There are threaded counterbore used to connect to one end of the fixed inner ring ejector rod, a limit counterbore used to limit the movement range of the diameter adjustment inner core, and a through hole used to install the diameter adjustment inner core; the diameter adjustment inner core has a stepped cylindrical structure. The stepped cylindrical structure consists of an outer ring ejector rod cylinder, a limiting cylinder and a diameter adjustment cylinder. The end of the diameter adjustment cylinder is equipped with a drag reduction dome that cooperates with the control groove and transition slope. The drag reduction dome is used to reduce the diameter. The resistance between the ejector device and the adjustment boss during the depth adjustment process. The outer ring ejector rod cylinder is nested and installed in the countersunk hole at one end of the outer ring ejector rod. The limit cylinder and the limit sink of the mobile adjustment ejector rod The hole cooperates to achieve the limiting effect on the diameter adjustment inner core. The diameter adjustment cylinder passes through the through hole of the mobile adjustment ejector rod, and the drag reduction dome is exposed outside the mobile adjustment ejector rod, and can be used in the control groove and transition on the adjustment boss. The slope and the adjustment track move up and down; the outer ring ejector pin is cylindrical, and the middle of one end of the cylindrical shape is provided with a counterbore that matches the outer ring ejector rod cylinder of the diameter adjustment inner core. The counterbore is surrounded by a circumference There are 4 guide U-shaped slots evenly distributed in the direction. The 4 guide U-shaped slots form a circular ring. There is a blind hole in the middle of the other end of the cylindrical shape. The inner diameter of the blind hole is larger than the 4 guide U-shaped slots. The maximum outer diameter of the formed ring; the fixed inner ring ejector is cylindrical, with a spring mounting counterbore in the middle of one end of the cylindrical end for installing the ejector rod return compression spring, and the outer diameter edge of the spring mounting countersunk hole is evenly distributed around it There are 4 U-shaped bosses that match the 4 guide U-shaped slots on the outer ring ejector rod. The outer circumferential surfaces of the four U-shaped bosses are equipped with threaded counterbore holes on the mobile adjustment ejector rod. Matching external thread I, 4 U-shaped bosses are annularly surrounding the spring mounting counterbore. The other end of the fixed inner ring ejector rod is provided with a slot in the middle to facilitate tightening with the movable adjustment ejector rod; diameter adjustment One end of the inner core passes through the diameter adjustment cylinder through the through hole in the middle of the moving adjustment ejector, and the limit cylinder is installed in the limit counterbore. The other end passes through the outer ring to push out the ejector cylinder and the outer ring to push out the sinker at one end of the ejector rod. Holes are nested for installation. One end of the fixed inner ring ejector pin passes through 4 U-shaped bosses and the other end of the ejector pin ejector from the outer ring passes through 4 guide U-shaped slots and is exposed outside one end of the outer ring ejector pin. The exposed end is connected to the threaded counterbore at one end of the mobile adjustment ejector through the external threads I on the outer surface of the four U-shaped bosses. The other end of the fixed inner ring ejector is located in the blind hole at the other end of the outer ring ejector rod. And the blind hole forms a cavity with the spring installation counterbore in the middle of one end of the fixed inner ring ejector rod. The ejector rod reset compression spring is placed in the cavity. The other end of the mobile adjustment ejector rod passes through the guide rail and the inclined groove rail on the adjustment boss. Nested connections.

Furthermore, the inclination angle of each set of chute rails on the adjustment boss is consistent with the inclination angle of the inclined surface of the mobile adjustment push rod. The chute rails, adjustment rails and control grooves on the adjustment boss are all inclined, and their inclination angles are uniform. The same, the outer diameter of the installation cylinder on one end of the mobile adjustment ejector rod is the same as the outer diameter of the outer ring ejector rod. The maximum outer diameter of the circle where the four U-shaped bosses are located is smaller than the outer diameter of the fixed inner ring ejector rod. The fixed inner ring ejector rod The outer diameter matches the diameter of the blind hole on the other end of the outer ring ejector pin, and the drag-reducing dome matches the control groove and transition bevel.

Furthermore, there are 8 ejector devices.

Furthermore, the spindle is a stepped shaft with an external thread II at one end and a retaining ring groove for installing a retaining ring at the other end. The adjusting boss is installed on the spindle through the bearing and is installed on the spindle through the steps and retaining rings on the spindle. The retaining ring in the groove achieves axial positioning, and the spindle is provided with an external thread with one end exposed outside the drive gear and the other end exposed outside the end cover.

Furthermore, there is a center hole of the end cover in the middle of the end cover for the main shaft to pass through. There is an annular boss for limiting in the middle of the end face of one end of the end cover. The end face where the annular boss is located has 4 end caps evenly distributed along the circumferential direction. For the installed countersunk bolt hole, the inner diameter of the annular boss is the same as the diameter of the center hole of the end cover, and they are concentric.

Furthermore, the outer wheel has 8 seeding through holes evenly distributed along the circumferential direction pointing to the center of the circle, and 4 bosses pointing to the center of the circle are evenly distributed on the inside of the outer wheel. Each of the four bosses is provided with an end cover and a driving gear. The installation through holes, the hole spacing of the four installation through holes matches the hole spacing of the four countersunk head bolt holes on the end cover, and the aperture diameter of the four installation through holes matches the small holes of the four countersunk head bolt holes on the end cover. aperture to match.

Furthermore, the drive gear has 4 threaded holes evenly distributed along the circumferential direction, and a center hole of the drive gear is provided in the middle for the main shaft to pass through. The apertures and hole spacing of the 4 threaded holes are the same as the apertures of the 4 mounting through holes on the outer wheel. and hole spacing.

In the present invention, when the drag reduction dome cooperates with the diameter control groove of the adjusting boss, the outer ring in the ejector device is pushed out of the ejector by the downward pressure of the ejector reset compression spring, and the outer ring is pushed out from one end of the ejector. The outer bottom surface is in contact with the diameter adjustment inner core. At this time, the seeding hole of the seeding wheel is in a state of large diameter and deep depth; when the drag reduction dome cooperates with the excessive slope of the adjustment boss, the seeding hole of the seeding wheel is at this time. In the excessive state of adjustment of the diameter and depth of the hole; when the drag reduction dome cooperates with the adjustment track of the adjustment boss (that is, the drag reduction dome contacts the upper surface of the adjustment track), the outer ring in the ejector device pushes out one end of the ejector The outer bottom surface of the seeding wheel is pushed upward by the force of the diameter-adjusting inner core, and the outer ring is pushed upward by the ejector rod. At this time, the seeding hole of the seeding wheel is in a state of small diameter and shallow depth.

The beneficial effects of the present invention are: by cooperating with the guide rail and the inclined groove rail on the adjusting boss, the seeding wheel of the seed metering device can simultaneously meet the requirements for precise sowing of indica rice bud seeds and japonica rice bud seeds with a length exceeding 11 mm; the structure is compact, The operation is stable. This device can simultaneously adjust the depth and diameter of the seeding hole of the seeding wheel, while meeting the precision sowing requirements of different rice varieties and different sowing amounts.

Description of the drawings

Figure 1 is an explosion schematic diagram of the present invention;

Figure 2 is a schematic structural diagram of the present invention;

Figure 3 is an exploded schematic diagram of the ejector device of the present invention;

Figure 4a is a visual perspective view of the mobile adjustment ejector rod of the present invention;

Figure 4b is another visual perspective view of the mobile adjustment ejector rod of the present invention;

Figure 5 is a schematic structural diagram of the diameter adjusting inner core of the present invention;

Figure 6a is a visual perspective view of the outer ring ejecting the ejector pin according to the present invention;

Figure 6b is another visual perspective view of the outer ring ejecting the ejector pin according to the present invention;

Figure 7a is a perspective view of the fixed inner ring push rod of the present invention;

Figure 7b is another visual perspective view of the fixed inner ring push rod of the present invention;

Figure 8a is a perspective view of the adjusting boss of the present invention;

Figure 8b is another visual perspective view of the adjusting boss of the present invention;

Figure 9 is a schematic structural diagram of the spindle of the present invention;

Figure 10 is a schematic structural diagram of the end cap of the present invention;

Figure 11 is a schematic structural diagram of the outer wheel of the present invention;

Figure 12 is a schematic structural diagram of the driving gear of the present invention.

In the picture, 1. Driving gear; 2. Outer wheel; 3. Boss limit ring; 4. Spindle; 5. Depth return spring; 6. Ejector device; 7. Adjustment boss; 8. End cover; 9. End Cover center hole; 10. Back-up ring; 11. Bearing; 12. Drive gear center hole; 13. Fixed inner ring ejector pin; 14. ejector pin return compression spring; 15. Outer ring ejector pin; 16. Diameter adjustment inner Core; 17. Moving and adjusting ejector rod; 18. Installation cylinder; 19. Inclined ejector rod; 20. Inclined surface; 21. Guide rail; 22. Inclined groove; 23. Threaded counterbore; 24. Limiting countersunk hole; 25. Through hole ; 26. Outer ring ejection ejector cylinder; 27. Limiting cylinder; 28. Diameter adjustment cylinder; 29. Drag reducing dome; 30. Counterbore; 31. Guide U-shaped slot; 32. U-shaped boss; 33. Spring mounting counterbore; 34. External thread I; 35. Slot; 36. Bearing mounting counterbore; 37. Spindle through hole; 38. Inclined groove rail; 39. Control groove; 40. Adjustment track; 41. Excessive bevel; 42. External thread II; 43. Back-up ring groove; 44. Ring boss; 45. Countersunk bolt hole; 46. Seeding through hole; 47. Installation through hole; 48. Threaded hole; 49. Blind hole .

Detailed ways

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

In the description of this application, it should be noted that all directional indications (such as up, down, left, right, front, back, center...) in the embodiment of the present invention are only used to explain the position of a certain posture (such as (shown in the accompanying drawings)), if the specific posture changes, the directional indication will also change accordingly.

It should also be noted that when an element is referred to as being "mounted" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor within the protection scope required by the present invention.

As shown in Figures 1 to 12, the present invention provides a hole-type rice seed metering seeding wheel with adjustable diameter and depth, including an outer wheel 2, a driving gear 1, an end cover 8, a main shaft 4, and an adjusting boss 7 , ejector device 6, boss limit ring 3, depth return spring 5 and bearing 11. The circumference of the outer wheel 2 is evenly distributed with a plurality of seeding through holes 46 pointing to the center of the circle, and the adjustment boss 7 is evenly distributed with multiple sets of inclined grooves rails 38, and each group of chute rails 38 includes two oppositely arranged chute rails. There are multiple push rod devices 6, and one end of the plurality of push rod devices 6 is nested and matched with a group of chute rails 38 respectively. The other ends are respectively nested in the sowing through holes 46. The ejector device 6 and the sowing through holes 46 form a sowing type hole with variable diameter and depth. Both ends of the adjusting boss 7 are respectively installed on the main shaft 4 through bearings 11. The table limit ring 3 and the depth return spring 5 are sleeved on the main shaft 4, and the depth return spring 5 is located between the adjusting boss 7 and the boss limit ring 3. The boss limit ring 3 is located between the depth return spring 5 and the driving gear. 1, the driving gear 1 and the end cover 8 are respectively installed on both ends of the outer wheel 2. The main shaft 4 passes through the middle part of the driving gear 1, the middle part of the outer wheel 2, the boss limit ring 3, the depth return spring 5, the bearing 11, The middle part of the adjusting boss 7, the bearing 11 and the middle part of the end cover 8 are connected by bolts. After being fixed, the two ends of the spindle 4 are exposed outside the driving gear 1 and the end cover 8 respectively, and the adjusting boss 7, ejector device 6, The boss limit ring 3, the depth return spring 5 and the bearing 11 are all located in the outer wheel 2.

Preferably, the adjusting boss 7 is a trapezoidal rotary structure. Both ends of the trapezoidal rotary structure are provided with bearing mounting counterbore 36 for installing the bearing 11. There is a hole for the main shaft 4 to pass through between the two bearing mounting counterbores 36. The main shaft through hole 37 has 8 sets of chute rails 38 evenly distributed on the outer surface of the trapezoidal rotor structure. Each set of chute rails 38 is provided with a control groove 39 at the middle upper end, and each set of chute rails 38 is provided with an adjustment groove 39 at the middle lower end. The track 40 , the adjustment track 40 and the control groove 39 are all connected by an excessive slope 41 .

Preferably, the ejector device 6 includes a movable adjustment ejector 17, an outer ring ejector 15, a fixed inner ring ejector 13, a diameter adjustment inner core 16 and an ejector return compression spring 14. There is a movable adjustment ejector 17 in the middle. To install the through hole of the inner diameter adjustment core 16, one end of the inner diameter adjustment core 16 passes through the through hole 25 of the movable adjustment ejector rod 17, and the other end is nested with one end of the outer ring ejector rod 15 to fix the inner ring ejector rod 13. One end is nested inside the outer ring ejector rod 15 and exposes the outer ring ejector rod 15, and its exposed end is threadedly connected to one end of the mobile adjustment ejector rod 17, and the other end of the fixed inner ring ejector rod 13 is located at the outer ring ejector rod 15. A cavity is formed between the other end of the ejector rod 15 and the other end of the outer ring ejector rod 15. The ejector rod return compression spring 14 is placed between the fixed inner ring ejector rod 13 and the other end of the outer ring ejector rod 15. Inside the cavity, and the ejector rod return compression spring 14 is in a compressed state, under the action of the elastic force of the ejector rod return compression spring 14, the outer ring is pushed out of the outer bottom surface of one end of the ejector rod 15 and the other end of the diameter adjustment inner core 16 is always in contact. The other end of the mobile adjustment ejector 17 is nested with the inclined groove rail 38 of the adjustment boss 7 , and the other end of the outer ring ejector 15 is nested with the sowing through hole 46 on the outer wheel 2 .

Preferably, one end of the mobile adjustment ejector rod 17 is a mounting cylinder 18, and the other end is an inclined ejector rod 19. The end of the inclined ejector rod 19 is an inclined plane 20. Both sides of the inclined plane 20 are provided with inclined groove rails 38 on the adjusting boss 7. The matching guide rail 21 realizes the adjustment of the diameter and depth of the seeding hole according to the operation needs; the middle part of the slope 20 is provided with a chute 22 that matches the adjustment track 40 on the adjustment boss 7, and the bottom surface of the chute 22 Parallel to the inclined plane 20, the end of the mounting cylinder 18 is provided with a threaded counterbore 23 for connecting to one end of the fixed inner ring ejector rod 13 and a limit counterbored hole for limiting the movement range of the diameter adjustment inner core 16 in the direction of the inclined ejector rod 19. 24 and the through hole 25 for installing the diameter adjustment inner core 16; the diameter adjustment inner core 16 has a stepped cylindrical structure, which consists of an outer ring ejection rod cylinder 26, a limiting cylinder 27 and a diameter adjusting cylinder 28. The end of the diameter adjustment cylinder 28 is provided with a drag reduction dome 29 that cooperates with the control groove 39 and the transition slope 41. The drag reduction dome 29 is used to reduce the resistance between the ejector device 6 and the adjustment boss 7 during the diameter and depth adjustment process. , the outer ring ejector rod cylinder 26 is nested and installed in the counterbore 30 at one end of the outer ring ejector rod 15, and the limit cylinder 27 cooperates with the limit counterbore 24 of the mobile adjustment ejector rod 17 to realize the diameter adjustment of the inner core 16, the diameter adjustment cylinder 28 passes through the through hole 25 of the mobile adjustment ejector 17, the drag reduction dome 29 is exposed outside the mobile adjustment ejector 16, and can be used in the control groove 39 and transition slope on the adjustment boss 7 41 and the adjusting track 40 move up and down; the outer ring ejector rod 15 is cylindrical, and the middle of one end of the cylindrical shape is provided with a counterbore 30 that matches the outer ring ejector rod cylinder 26 of the diameter adjustment inner core 16. Four guide U-shaped through grooves 31 are evenly distributed around the counterbore 30 in the circumferential direction. The four guide U-shaped through grooves 31 form a circular ring. A blind hole 49 is provided in the middle of the other end of the cylindrical shape. The blind hole 49 The inner diameter is larger than the maximum outer diameter of the ring formed by the four guide U-shaped slots 31; the fixed inner ring ejector rod 13 is cylindrical, and the middle of one end of the cylindrical shape is provided with a spring installation sink for installing the ejector rod reset compression spring 14. Hole 33, around the outer diameter edge of the spring mounting counterbore 33 are evenly distributed four U-shaped bosses 32 that match the four guide U-shaped slots 31 on the outer ring ejection pin 15. The four U-shaped bosses 32 The outer circumferential surface of the boss 32 is provided with external threads I 34 that match the threaded counterbore 23 on the mobile adjustment push rod 17. Four U-shaped bosses 32 are annularly surrounding the spring mounting counterbore 33, and are fixed The other end of the inner ring ejector rod 13 is provided with a slot 35 in the middle to facilitate tightening with the movable adjustment ejector rod 17; one end of the diameter adjustment inner core 16 passes through the diameter adjustment cylinder 28 through the through hole 25 in the middle of the movable adjustment ejector rod 17, and is limited to The position cylinder 27 is installed in the limit countersunk hole 24. The other end is nested through the outer ring ejection rod cylinder 26 and the counterbore 30 at one end of the outer ring ejection rod 15. One end of the fixed inner ring ejection rod 13 passes through four The U-shaped boss 32 passes through the four guide U-shaped slots 31 from the other end of the outer ring ejector pin 15 and is exposed outside one end of the outer ring ejector pin 15. Its exposed end passes through the four U-shaped bosses 32. The external thread I34 on the outer circular surface is connected to the threaded counterbore 23 at one end of the movable adjustment ejector rod 17, and the other end of the fixed inner ring ejector rod 13 is located in the blind hole 49 at the other end of the outer ring ejector rod 15, and the blind hole 49 forms a cavity with the spring mounting counterbore 33 in the middle of one end of the fixed inner ring push rod 13. The push rod return compression spring 14 is placed in the cavity. The other end of the mobile adjustment push rod 17 passes through the guide rail 21 and the adjustment boss 7. The chute rails 38 are nested and connected.

Preferably, the inclination angle of each set of chute rails 38 on the adjustment boss 7 is consistent with the inclination angle of the slope 20 of the mobile adjustment push rod 17. The chute rails 38, the adjustment track 40 and the control groove 39 on the adjustment boss 7 are all aligned. It is inclined, and its inclination angles are all the same. The outer diameter of the installation cylinder 18 on one end of the mobile adjustment ejector rod 17 is the same as the outer diameter of the outer ring ejector rod 15. The maximum outer diameter of the circumference where the four U-shaped bosses 32 are located is less than The outer diameter of the fixed inner ring ejector pin 13 is matched with the diameter of the blind hole 49 on the other end of the outer ring ejector pin 15. The drag reduction dome 29 is matched with the control groove 39 and the excessive slope 41. Cooperate.

Preferably, there are eight push rod devices 6 .

Preferably, the main shaft 4 is a stepped shaft with an external thread II 42 at one end and a retaining ring groove 43 for installing the retaining ring 10 at the other end. The adjusting boss 7 is installed on the main shaft 4 through the bearing 11 and is installed on the main shaft 4 through the bearing 11. The steps on the main shaft 4 and the retaining ring 10 in the retaining ring groove 43 achieve axial positioning. The main shaft 4 is provided with an external thread II 42 with one end exposed outside the driving gear 1 and the other end exposed outside the end cover 8 .

Preferably, the end cover 8 is provided with a center hole 9 for the main shaft 4 to pass through, and an annular boss 44 for positioning is provided in the middle of one end face of the end cover 8. The end face where the annular boss 44 is located is evenly distributed along the circumferential direction. There are 4 countersunk bolt holes 45 for installing the end cover 8. The inner diameter of the annular boss 44 is the same as the diameter of the end cover center hole 9 and is concentric.

Preferably, the outer wheel 8 has 8 sowing through holes 46 pointing to the center of the circle evenly distributed along the circumferential direction, and 4 bosses pointing to the center of the circle are evenly distributed on the inside of the outer wheel 2. Each of the four bosses is provided with a mounting end. The installation through holes 47 of the cover 8 and the drive gear 1, the hole spacing of the four installation through holes 47 matches the hole spacing of the four countersunk bolt holes 45 on the end cover 8, the apertures of the four installation through holes 47 match the end cover The four countersunk bolt holes on 8 match the small hole diameter of 45.

Preferably, the driving gear 1 has 4 threaded holes 48 evenly distributed along the circumferential direction, and a driving gear center hole 12 is provided in the middle for the main shaft 4 to pass through. The diameter and hole spacing of the 4 threaded holes 48 are the same as those on the outer wheel 2 The 4 mounting through holes match the 47 hole diameter and hole spacing.

In the present invention, the main shaft 4 passes through the driving gear center hole 12 on the driving gear 1, the middle part of the outer wheel 2, the boss limit ring 3, the depth return spring 5, the bearing 11, and the main shaft through hole 37 on the adjusting boss 7 in sequence. , bearing 11 and the end cover center hole 9 on the end cover 8, and pass 4 bolts through the 4 countersunk bolt holes 45 on the end cover 8, the 4 mounting through holes 47 on the outer wheel 2 and the drive gear. The 4 threaded holes 48 on 1 are fixedly connected.

In the present invention, the inner wall of the outer wheel 2 is provided with 8 protrusions pointing toward the center of the circle along the circumferential direction, and each protrusion is provided with a sowing through hole 46. Without affecting the normal operation of the present invention, the protrusions can be The shape can be cylinder, rectangular parallelepiped, cube, semicircle, any shape that can realize sowing and installation, and there is no restriction on its shape and structure.

In the present invention, the eight sowing through holes 46 on the outer wheel 2 are all hollow cylindrical structures.

In the present invention, the total length of the four bosses on the inner side of the outer wheel 2 is less than or equal to the total length of the outer wheel 2 .

In the present invention, the adjusting boss 7 has a trapezoidal rotary structure, that is, its structure has one end with a large outer diameter and one end with a small outer diameter. When installed, the end of the adjusting boss 7 with a small outer diameter is set toward the depth return spring 5, and the control groove 39 is located at the end of the adjusting boss 7 with a smaller outer diameter, and the adjusting rail 40 is located at an end of the adjusting boss 7 with a larger outer diameter.

In the present invention, the control groove 39 is used to control the diameter of the sowing hole of the seeding wheel. The control groove 39 is a groove. The end surface of the adjustment track 40 is lower than the outer surface of the adjustment boss 7. The end surface of the control groove 39 is lower than the adjustment track. 40 end surface, the two ends of the transition slope 41 are respectively connected to the lower end of the control groove 39 and the upper end of the adjustment track 40. The structural shape and size of the adjustment track 40 match the structural shape and size of the chute 22 on the mobile adjustment ejector 17, and the adjustment convex The structural shape and size of the chute rail 38 on the table 7 match the structural shape and size of the guide rail 21 on the mobile adjustment push rod 17 .

In the present invention, the inclined surface 20 and the inclined groove 22 of the movable adjustment ejector 17 form a concave structure. The shape of the guide rail 21 on the movable adjustment ejector 17 can be a square structure (i.e., a cube or a cuboid) or an arc shape, etc. As long as the normal operation of the present invention is not affected, there is no restriction on its appearance and structure.

In the present invention, the counterbore 30 at one end of the outer ring ejector pin 15 is located in the middle of the four guide U-shaped through grooves 31, and the four guide U-shaped through grooves 31 are located in the blind holes at the other end of the outer ring ejector pin 15. 49 inside.

In the present invention, when the drag reduction dome 29 cooperates with the diameter control groove 39 of the adjustment boss 7, the outer ring of the ejector pin 15 in the ejector pin device 6 is subject to the downward pressure of the ejector pin return compression spring 14. The outer bottom surface of one end of the ring ejector rod 15 is in contact with the diameter adjustment inner core 16. At this time, the seeding hole of the seeding wheel is in a state of large diameter and deep depth; when the drag reduction dome 29 and the excessive slope 41 of the adjustment boss 7 When mating, the seeding hole of the seeding wheel is in an excessive state of adjusting the hole diameter and depth; Surface contact), the outer bottom surface of one end of the outer ring ejector rod 15 in the ejector device 6 is pushed upward by the force of the diameter adjusting inner core 16, and the outer ring ejector rod 15 is pushed upward. At this time, the seeding wheel The hole is small in diameter and shallow in depth.

In the present invention, refer to the accompanying drawing 1, a hole type rice seed metering seeding wheel with adjustable diameter and depth includes a driving gear 1, an outer wheel 2, a boss limit ring 3, a main shaft 4, and a depth return spring 5 , ejector device 6, adjusting boss 7, end cover 8 and bearing 11. Among them, the circumference of the outer wheel 2 is provided with 8 seeding through holes 46 pointing to the center of the circle, and the adjusting boss 7 is provided with 8 sets of inclined groove rails 38. One end of the ejector device 6 is nested with a set of chute rails 38, and the other end of the ejector device 6 is nested in the sowing through hole 46. The ejector device 6 and the sowing through hole 46 form a sowing type hole with variable diameter and depth. The adjusting boss 7 is installed on the main shaft 4 through the bearing 11. The boss limit ring 3 and the depth return spring 5 are set on the main shaft 4. The driving gear 1 and the end cover 8 are respectively installed on both ends of the outer wheel 2. The driving gear 1, The outer wheel 2 and the end cover 8 are connected by bolts. One end of the spindle 4 passes through the center hole 12 of the driving gear, and the other end passes through the center hole 9 of the end cover.

In the present invention, the guide rail 21 on the ejector pin 17 in the ejector device 6 is moved to cooperate with the chute rail 38 on the adjustment boss 7 to realize the adjustment of the depth of the sowing hole; The drag reduction dome 29 on the diameter adjustment inner core 16 cooperates with the control groove 39 on the adjustment boss 7 to realize the adjustment of the diameter of the sowing type hole.

In the present invention, the cooperation between the adjusting boss 7 and the ejector device 6 described herein can not only adjust the depth of the ejector device 6 in the sowing through hole 46, but also adjust the diameter of the seeding hole. That is, when the ejector device When the diameter adjustment inner core 16 in 6 moves into the control groove 43 on the adjustment boss 7, the outer ring ejects the ejector pin 15 without being affected by the force of the ejector pin return compression spring 14, and retracts downward, making the seeding hole The diameter is increased to realize the adjustment of the diameter of the sowing hole; when the diameter adjustment inner core 16 in the ejector device 6 moves to the adjustment track 40 through the excessive slope 41 on the adjustment boss 7, the outer ring pushes out the ejector 15 and is The force of the ejector reset compression spring 14 pushes upward, so that the diameter of the sowing hole is reduced, so as to realize the adjustment of the diameter of the sowing hole.

The working principle of the invention is: when the rice grain shape has good sphericity, the sowing amount can be controlled by adjusting the depth of the hole. The adjustment method is as follows: the adjusting boss is axially fixed on the main shaft, and the external thread II on the main shaft is used. , the spindle moves axially, the adjusting boss moves axially with the spindle, the chute rail of the adjusting boss cooperates with the guide rail of the mobile adjustment ejector in the ejector device, and the guide rail of the mobile adjustment ejector moves in the chute rail. This drives the ejector device to move up and down in the sowing hole to adjust the depth of the sowing hole;

When the rice grain type is long grain, the sowing rate cannot be controlled by adjusting the depth alone. The diameter and depth of the sowing hole need to be adjusted simultaneously to achieve the purpose of increasing the diameter and deepening the depth of the sowing hole. The adjustment method is as follows: The drag-reducing dome of the diameter adjustment core is always in contact with one of the control grooves, adjustment rails or transition slopes on the adjustment boss. When the adjustment boss moves axially with the spindle, the guide rail of the mobile adjustment ejector moves on the adjustment boss. The chute rail moves and the depth of the seeding hole increases. If the drag-reducing dome of the diameter adjustment core nested in the mobile adjustment ejector is located on the adjustment track of the adjustment boss, at this time the diameter adjustment core will move the outer ring The ejector pin is pushed upward, and the diameter of the seeding hole is in a small diameter state;

In the process of increasing the depth of the seeding hole, when the drag-reducing dome of the diameter-adjusting inner core nested in the mobile adjustment ejector moves to the excessive slope of the adjustment boss, the outer bottom surface of the outer ring ejects the ejector is affected by The diameter adjustment inner core exerts upward ejection force, and the outer ring ejection rod moves with the diameter adjustment inner core. At this time, the diameter of the seeding hole is in an adjusting state;

As the depth of the hole increases, when the drag-reducing dome of the diameter-adjusting inner core nested in the mobile adjustment ejector moves to the control groove of the adjustment boss, the outer ring ejection ejector in the ejector device is subjected to The downward elastic force of the ejector pin reset compresses the spring, so that the outer bottom surface of the outer ring ejector pin is always in contact with the upper surface of the diameter adjustment inner core. At this time, the outer ring ejector pin is not pushed upward, and the diameter of the seeding hole is at the maximum diameter status.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention. scope.

Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features of different embodiments are meant to be within the scope of the invention. and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this Background section is merely intended to enhance an understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art that is already known to those skilled in the art.

Claims (7)

1. The utility model provides a diameter and degree of depth adjustable hole formula rice seed metering ware sowing wheel which characterized in that: the device comprises an outer wheel, a driving gear, an end cover, a main shaft, an adjusting boss, a push rod device, a boss limiting ring, a depth reset spring and a bearing, wherein a plurality of seeding through holes pointing to the circle center are uniformly distributed on the circumference of the outer wheel, a plurality of groups of chute rails are uniformly distributed on the adjusting boss, each group of chute rails comprises two chute rails which are oppositely arranged, the push rod device is provided with a plurality of push rod devices, one ends of the push rod devices are respectively nested with one group of chute rails, the other ends of the push rod devices are respectively nested in the seeding through holes, the push rod device and the seeding through holes form a seeding hole with variable diameter, two ends of the adjusting boss are respectively arranged on the main shaft through the bearing, the boss limiting ring and the depth reset spring are sleeved on the main shaft, the depth reset spring is positioned between the adjusting boss and the boss limiting ring, the boss limiting ring is positioned between the depth reset spring and the driving gear, the driving gear and the end cover is respectively arranged on the end faces of two ends of the outer wheel, and the main shaft sequentially passes through the middle part of the driving gear, the outer wheel, the boss limiting ring, the depth reset spring, the bearing, the middle part of the adjusting boss limiting ring, the bearing and the middle part of the bearing and the end cover are fixedly connected through bolts, two ends of the push rod are respectively exposed out of the driving gear and the end cover, and the adjusting boss limiting ring and the bearing are respectively, and the bearing are positioned in the bearing after being fixedly connected; the adjusting boss is a trapezoid solid of revolution structure, bearing mounting counter bores for mounting bearings are arranged at two ends of the trapezoid solid of revolution structure, a main shaft through hole for a main shaft to pass through is arranged between the two bearing mounting counter bores, 8 groups of chute rails are uniformly distributed on the outer side face of the trapezoid solid of revolution structure, a control groove is arranged at the middle upper end of each group of chute rails, an adjusting rail is arranged at the middle lower end of each group of chute rails, and the adjusting rails are connected with the control grooves through transitional inclined planes; the ejector rod device comprises a movable adjusting ejector rod, an outer ring ejector rod, a fixed inner ring ejector rod, a diameter adjusting inner core and an ejector rod reset compression spring, wherein a through hole for installing the diameter adjusting inner core is formed in the middle of the movable adjusting ejector rod, one end of the diameter adjusting inner core penetrates through the through hole of the movable adjusting ejector rod, the other end of the diameter adjusting inner core is nested with one end of the outer ring ejector rod, one end of the fixed inner ring ejector rod is nested and installed inside the outer ring ejector rod and is exposed out of the outer ring ejector rod, the exposed end of the fixed inner ring ejector rod is in threaded connection with one end of the movable adjusting ejector rod, the other end of the fixed inner ring ejector rod is located in the other end of the outer ring ejector rod and forms a cavity with the other end of the outer ring ejector rod, the ejector rod reset compression spring is in a compressed state, the outer bottom surface of one end of the outer ring ejector rod is always contacted with the other end of the diameter adjusting inner core under the elastic force of the ejector rod reset compression spring, the other end of the movable adjusting ejector rod is nested with a chute rail of an adjusting boss, and the other end of the outer ring ejector rod is nested with a sowing through hole on the outer ring; one end of the movable adjusting ejector rod is a mounting cylinder, the other end of the movable adjusting ejector rod is an inclined ejector rod, the end part of the inclined ejector rod is an inclined plane, and guide rails matched with inclined groove rails on the adjusting boss are arranged on two sides of the inclined plane, so that the diameter of the sowing hole and the depth of the sowing hole can be adjusted according to operation requirements; the middle part of the inclined plane is provided with an inclined groove matched with an adjusting track on the adjusting boss, the bottom surface of the inclined groove is parallel to the inclined plane, and the end part of the mounting cylinder is sequentially provided with a threaded counter bore connected with one end of the fixed inner ring ejector rod, a limiting counter bore used for limiting the moving range of the diameter adjusting inner core and a through hole used for mounting the diameter adjusting inner core towards the direction of the inclined ejector rod; the diameter adjusting inner core is of a stepped cylinder structure, the stepped cylinder structure sequentially comprises an outer ring ejection ejector rod cylinder, a limiting cylinder and a diameter adjusting cylinder, the end part of the diameter adjusting cylinder is provided with a drag reduction dome matched with a control groove and a transition inclined plane, the drag reduction dome is used for reducing resistance between an ejector rod device and an adjusting boss in the diameter depth adjusting process, the outer ring ejection ejector rod cylinder is nested and arranged in a counter bore at one end of the outer ring ejection ejector rod, the limiting cylinder is matched with the limiting counter bore of the movable adjusting ejector rod so as to realize the limiting effect on the diameter adjusting inner core, the diameter adjusting cylinder penetrates through a through hole of the movable adjusting ejector rod, and the drag reduction dome is exposed out of the movable adjusting ejector rod and can move up and down on the control groove, the transition inclined plane and the adjusting rail on the adjusting boss; the outer ring ejection ejector rod is cylindrical, the middle part of one end of the cylindrical shape is provided with a counter bore matched with the outer ring ejection ejector rod cylinder of the diameter adjusting inner core, 4 guide U-shaped through grooves are uniformly distributed around the counter bore along the circumferential direction, the 4 guide U-shaped through grooves form a circular ring shape, the middle part of the other end of the cylindrical shape is provided with a blind hole, and the inner diameter of the blind hole is larger than the maximum outer diameter of a circular ring formed by the 4 guide U-shaped through grooves; the fixed inner ring ejector rod is cylindrical, a spring mounting counter bore for mounting an ejector rod reset compression spring is formed in the middle of one end of the cylindrical shape, 4U-shaped bosses matched with 4 guide U-shaped through grooves on the outer ring ejector rod are uniformly distributed around the outer diameter edge of the spring mounting counter bore, external threads I matched with the threaded counter bore on the movable adjusting ejector rod are formed in the outer circular surface of each 4U-shaped bosses, the 4U-shaped bosses surround the periphery of the spring mounting counter bore in a circular ring shape, and a straight groove which is convenient to screw with the movable adjusting ejector rod is formed in the middle of the other end of the fixed inner ring ejector rod; one end of the diameter adjusting inner core passes through a through hole in the middle of the movable adjusting ejector rod through the diameter adjusting cylinder, the limiting cylinder is arranged in the limiting counter bore, the other end of the diameter adjusting inner core is nested with the counter bore in the middle of the outer ring ejector rod through the outer ring ejector rod cylinder, one end of the fixed inner ring ejector rod passes through 4 guide U-shaped through grooves from the other end of the outer ring ejector rod through 4U-shaped bosses and is exposed out of one end of the outer ring ejector rod, the exposed end of the fixed inner ring ejector rod is connected with a threaded counter bore in one end of the movable adjusting ejector rod through an external thread I on the outer circular surface of the 4U-shaped bosses, the other end of the fixed inner ring ejector rod is positioned in a blind hole in the other end of the outer ring ejector rod, a cavity is formed by the blind hole and a spring-mounting counter bore in the middle of one end of the fixed inner ring ejector rod, an ejector rod reset compression spring is arranged in the cavity, and the other end of the movable adjusting ejector rod is nested and connected with a chute rail on the adjusting boss through a guide rail.

2. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 1, wherein: the inclined angle of each group of inclined groove rails on the adjusting boss is consistent with the inclined angle of the inclined plane of the movable adjusting ejector rod, the inclined groove rails, the adjusting rail and the control groove on the adjusting boss are inclined, the inclined angles are the same, the outer diameter of the mounting cylinder on one end of the movable adjusting ejector rod is the same as the outer diameter of the outer ring ejector rod, the maximum outer diameter of the circumference of the 4U-shaped bosses is smaller than the outer diameter of the fixed inner ring ejector rod, the outer diameter of the fixed inner ring ejector rod is matched with the aperture of the blind hole on the other end of the outer ring ejector rod, and the drag reduction dome is matched with the control groove and the transitional inclined plane.

3. The diameter and depth adjustable hole-type rice seed metering device sowing wheel according to any one of claims 1 to 2, wherein: the number of the ejector rod devices is 8.

4. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 1, wherein: the main shaft is the step shaft, and one end is equipped with external screw thread II, and the other end is equipped with the retaining ring groove that is used for installing the retaining ring, and the regulation boss passes through the epaxial installation of bearing realization on the main shaft to realize axial positioning through the retaining ring in step and the retaining ring groove on the main shaft, the main shaft is equipped with external screw thread II end and exposes outside drive gear, and the other end exposes outside the end cover.

5. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 1, wherein: the middle of the end cover is provided with an end cover center hole for the spindle to pass through, the middle of the end face of one end of the end cover is provided with a circular ring boss for limiting, 4 countersunk bolt holes for the end cover to be installed are uniformly distributed on the end face where the circular ring boss is located along the circumferential direction, and the inner diameter of the circular ring boss is the same as the aperture of the end cover center hole and concentric.

6. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 5, wherein: the outer wheel is evenly distributed with 8 seeding through holes pointing to the circle center along the circumferential direction, the inner side of the outer wheel is evenly distributed with 4 bosses pointing to the circle center, the 4 bosses are all provided with a mounting through hole for mounting the end cover and the driving gear, the hole spacing of the 4 mounting through holes is matched with the hole spacing of the 4 countersunk head bolt holes on the end cover, and the hole diameters of the 4 mounting through holes are matched with the hole diameters of the 4 countersunk head bolt holes on the end cover.

7. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 6, wherein: the driving gear is uniformly provided with 4 threaded holes along the circumferential direction, the middle part of the driving gear is provided with a driving gear center hole for the spindle to pass through, and the aperture and the hole spacing of the 4 threaded holes are matched with the aperture and the hole spacing of the 4 mounting through holes on the outer wheel.