CN111670644A

CN111670644A - Seedling bed seedling raising machine

Info

Publication number: CN111670644A
Application number: CN202010093873.7A
Authority: CN
Inventors: 郝汉胜
Original assignee: Yancheng Yonghong Machinery Co ltd
Current assignee: Yancheng Yonghong Machinery Co ltd
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2020-09-18

Abstract

The invention relates to a seedling raising machine for a seedling bed, which is characterized in that a latch structure which can be mutually engaged and driven and can separate a driven ring at a fast rotating side from a driving ring when a certain rotation speed difference exists between a left driven ring and a right driven ring is arranged between the driving ring and the left driven ring and between the driving ring and the right driven ring, the latch structure is only required to be arranged on the driving ring and the driven ring, the driving ring and the driven ring are tightly combined by virtue of the pressure of a left auxiliary spring and a right auxiliary spring, and the driven ring at the fast rotating side is separated from the driving ring when an overlarge rotation speed difference exists between the left driven ring and the right driven ring due to the slipping or hanging of a rotating wheel, but the driven ring at the non-slipping or hanging side is more tightly engaged with the driving ring.

Description

Seedling bed seedling raising machine

Technical Field

The invention relates to the technical field of seedling raising machines, in particular to a seedling raising machine for a seedling bed.

Background

At present, agricultural production gradually develops towards automation and mechanization, seeding of rice seedlings in agricultural production requires quite heavy physical labor, and if the farmland area needing to be raised is too large, a large amount of manpower needs to be invested, so that mechanized automatic seedling raising is necessary; the existing rice seedling raising machine raises rice seedlings mechanically, saves manpower, but the existing rice seedling raising machine is a semi-automatic seedling raising machine, still has the defects that a special tractor needs to be configured, and meanwhile, the turning radius is large, so that the existing rice seedling raising machine is inconvenient to move to the field. In view of the above drawbacks, it is necessary to design a seedling raising machine for a seedling bed.

Disclosure of Invention

The invention aims to provide a seedling raising machine for a seedling bed, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a seedling raising machine for a seedling bed comprises a mounting plate, wherein a fixed seat is fixedly connected to the bottom of the mounting plate, a rotating shaft is rotatably connected to the center of the fixed seat, a rotating wheel is fixedly connected to the surface of the rotating shaft, a supporting seat is fixedly connected to one side of the top of the mounting plate, a driving shaft is rotatably connected to the center of the supporting seat, a driving wheel is fixedly connected to the surface of the driving shaft, the driving wheel and the rotating wheel are in transmission connection through a crawler belt, a supporting frame is vertically and fixedly connected to the top of the mounting plate, a seedling raising machine is fixedly connected to the top of the supporting frame, an internal combustion engine and a differential mechanism are fixedly connected to the center of the top of the mounting plate in sequence, a gearbox is fixedly connected to the top of the mounting plate and positioned, the surface of the input shaft of the differential is fixedly connected with a first conical gear, the input shaft end of the reduction gearbox is fixedly connected with a second conical gear, the first conical gear is meshed with the second conical gear, the output shaft end of the reduction box is fixedly connected with a belt pulley, the belt pulley is in transmission connection with the seedling raising machine through a first belt, one side of the reduction gearbox is fixedly connected with a hydraulic pump station, the belt pulley is in transmission connection with the hydraulic pump station through a second belt, the two sides of the bottom of the mounting plate are fixedly connected with rotating seats, the center of the rotating seat is rotatably connected with a hydraulic rod, one end of the rotating shaft is in transmission connection with a rotating wheel, the differential mechanism comprises an outer shell, a half-shaft spline hub, a center ring, a driving ring, a left driven ring, a right driven ring, a spring seat, a left auxiliary spring and a right auxiliary spring, wherein the middle of the outer shell is provided with two groups of half-shaft spline hubs which are externally connected with left and right rotating wheel half shafts.

Preferably, the inner side ends of the two groups of half-shaft spline hubs are respectively provided with a snap ring, the center ring is arranged between the two snap rings, the center ring is limited between the two snap rings and cannot axially move, the inner side of the driving ring is slidably sleeved on the outer side of the center ring, the driving ring and the center ring can rotate relatively, the outer side of the driving ring is connected to the outer shell, and the outer side of the driving ring can be vertically provided with 4 cylinders in a cross-shaped structure for connecting the outer shell; and the left driven ring and the right driven ring are respectively engaged and connected with the half shaft spline hub on the corresponding side in an axially sliding manner.

Preferably, the outer side wall of the left driven ring is provided with a left auxiliary spring, and the left auxiliary spring is compressed between a spring seat arranged on the left half-shaft spline hub and the left driven ring so as to tightly combine the left driven ring and the driving ring; the outer side wall of the right driven ring is provided with a right auxiliary spring, and the right auxiliary spring is compressed between a spring seat arranged on the right half shaft spline hub and the right driven ring so as to tightly combine the right driven ring and the driving ring together; and a latch structure which can be mutually engaged for transmission and can separate the driven ring at the fast rotation side from the driving ring when a certain rotation speed difference exists between the left driven ring and the right driven ring is arranged between the driving ring and the left driven ring and between the driving ring and the right driven ring.

Preferably, the latch structure includes the protruding latch of evenly locating on the drive ring lateral wall, evenly locates the concave latch on left driven ring and the right driven ring inside wall, and protruding latch is spherical structure's arch, and concave latch is the recess of cylinder structure, and protruding latch meshes with concave latch mutually.

Preferably, an output shaft end of the internal combustion engine is fixedly connected with a first cross coupler, one end of the first cross coupler is fixedly connected with a transmission shaft, one end of the transmission shaft is fixedly connected with a second cross coupler, and one end of the second cross coupler is connected with an input shaft end of the differential.

Preferably, one side of the control end of the gearbox is fixedly connected with a control lever, the output shaft end of the gearbox is rotatably connected with a stabilizing seat, and the stabilizing seat is fixedly connected with the top of the mounting plate.

Preferably, one end of the rotating shaft is rectangular, and a pin hole is formed in the surface of the rotating shaft.

Preferably, a console is fixedly connected to one side of the top of the mounting plate.

Compared with the prior art, the seedling raising machine for the seedling bed has the advantages of simple structure, ingenious design, convenient use, reliable work, long service life and the like, the problem of slipping and idling of the rotating wheel when the rotating wheel runs on a suspended or slipping road surface is well solved by arranging the latch structures which can be mutually meshed and driven between the driving ring and the left driven ring and between the driving ring and the right driven ring and can separate the driven ring at the fast rotating side from the driving ring when a certain rotating speed difference exists between the left driven ring and the right driven ring, only by arranging the latch structures on the driving ring and the driven ring, the driving ring and the driven ring are tightly combined by the pressure of the left auxiliary spring and the right auxiliary spring, and the driven ring at the fast rotating side is separated from the driving ring when an overlarge rotating speed difference exists between the left driven ring and the right driven ring due to slipping or suspending of the rotating wheel, the safety of the vehicle can be considered when necessary, so that the seedling raising machine can be driven by a single-side rotating wheel, the non-skid rotating wheel is used for driving the seedling raising machine to run, and the passing capacity of the seedling raising machine is obviously improved; the bottom of the mounting plate is fixedly connected with a fixed seat, the center of the fixed seat is rotatably connected with a rotating shaft, the surface of the rotating shaft is fixedly connected with a rotating wheel, one side of the top of the mounting plate is fixedly connected with a supporting seat, the center of the supporting seat is rotatably connected with a driving shaft, the surface of the driving shaft is fixedly connected with a driving wheel, the driving wheel and the rotating wheel are in transmission connection through a crawler belt, the center of the top of the mounting plate is sequentially and fixedly connected with an internal combustion engine and a differential mechanism, the top of the mounting plate is fixedly connected with gearboxes positioned at two sides of the differential mechanism, the gearboxes at two sides connected through the differential mechanism respectively control the movement of the crawler belts at two sides, self-walking and turning can be realized; according to the invention, the reduction gearbox is fixedly connected to the top of the mounting plate and one side close to the differential mechanism, the first conical gear is fixedly connected to the surface of the input shaft of the differential mechanism, the second conical gear is fixedly connected to the end of the input shaft of the reduction gearbox, the first conical gear is meshed with the second conical gear, the belt pulley is fixedly connected to the output shaft of the reduction gearbox, the belt pulley is in transmission connection with the seedling raising machine through the first belt, the internal combustion engine and the reduction gearbox are also used for driving the seedling raising machine, the use of a power output device is reduced, the overall weight is reduced, the carrying is convenient, and the.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic view of a seedling raising machine for a seedling bed according to the present invention;

FIG. 2 is a schematic view of the top structure of a mounting plate of the seedling raising machine for a rice seedling bed of the present invention;

FIG. 3 is a side view of a mounting plate of the seedling raising machine for a rice seedling bed according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 2;

FIG. 5 is a schematic view of the differential mechanism of the seedling raising machine for rice field according to the present invention.

In the drawings:

1. mounting a plate; 2. a fixed seat; 3. a rotating shaft; 4. a rotating wheel; 5. a supporting seat; 6. a drive shaft; 7. a drive wheel; 8. a crawler belt; 9. a support frame; 10. integrally sowing and paving the soil box; 11. an internal combustion engine; 12. A differential mechanism; 13. a joystick; 14. a gearbox; 15. a reduction gearbox; 16. a first conical gear; 17. A second conical gear; 18. a belt pulley; 19. a first belt; 20. a hydraulic pump station; 21. a second belt; 22. a rotating seat; 23. a hydraulic lever; 24. a first cross coupling; 25. a drive shaft; 26. a second cross coupler; 27. a stabilizing base; 28. a rotating wheel; 29. a console; 30. a movable conveying device; 31. A soil scraping and covering device; 32. a covering soil conveying device; 33. a chain transmission; 34. a bottom soil scraping device; 35. A base; 36. a subsoil transfer device; 37. a seedling raising tray conveying device; 38. sowing a seed shaft; 39. a center ring assembly hole; 40. an outer housing; 41. a half-shaft splined hub; 42. a snap ring; 43. a center ring; 44. a driving ring; 45. a left driven ring; 46. a right driven ring; 47. a spring seat; 48. a left auxiliary spring; 49. a right assist spring; 50. a convex latch; 51. concave latch teeth; 52. a bearing; 53. amortization packing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a seedling raising machine for a seedling bed comprises an installation plate 1, wherein the bottom of the installation plate 1 is fixedly connected with a fixed seat 2, the center of the fixed seat 2 is rotatably connected with a rotating shaft 3, the surface of the rotating shaft 3 is fixedly connected with a rotating wheel 4, one side of the top of the installation plate 1 is fixedly connected with a supporting seat 5, the center of the supporting seat 5 is rotatably connected with a driving shaft 6, the surface of the driving shaft 6 is fixedly connected with a driving wheel 7, the driving wheel 7 is in transmission connection with the rotating wheel 4 through a crawler 8, the crawler 8 is used for transmission, so that the contact area is increased; the top of the mounting plate 1 is vertically and fixedly connected with a support frame 9, the top of the support frame 9 is fixedly connected with a seedling raising machine, the center of the top of the mounting plate 1 is sequentially and fixedly connected with an internal combustion engine 11 and a differential mechanism 12, the top of the mounting plate 1 and two sides of the differential mechanism 12 are fixedly connected with a gearbox 14, the output end of the gearbox 14 is fixedly connected with a driving shaft 6, the internal combustion engine 11, the differential mechanism 12 and the gearbox 14 are used for driving, and the tracks 8 on the two sides are respectively controlled so as; a reduction gearbox 15 is fixedly connected to the top of the mounting plate 1 and one side close to the differential 12, a first conical gear 16 is fixedly connected to the surface of an input shaft of the differential 12, a second conical gear 17 is fixedly connected to the end of the input shaft of the reduction gearbox 15, the first conical gear 16 is meshed with the second conical gear 17, a belt pulley 18 is fixedly connected to the output shaft of the reduction gearbox 15, the belt pulley 18 is in transmission connection with a seedling raising machine through a first belt 19, the seedling raising machine is driven by the internal combustion engine 11 and the reduction gearbox 15, and the use of a driving device is reduced; one side fixedly connected with hydraulic power unit 20 of reducing gear box 15, belt pulley 18 is connected through the transmission of second belt 21 with hydraulic power unit 20, and the both sides fixedly connected with of mounting panel 1 bottom rotates seat 22, rotates the center of seat 22 and rotates and be connected with hydraulic stem 23, and the one end transmission of axis of rotation 3 is connected with runner 28, is convenient for walk on the highway through runner 28.

In this embodiment, an output shaft end of the internal combustion engine 11 is fixedly connected with a first cross coupler 24, one end of the first cross coupler 24 is fixedly connected with a transmission shaft 25, one end of the transmission shaft 25 is fixedly connected with a second cross coupler 26, and one end of the second cross coupler 26 is connected with an input shaft end of the differential 12. One side of the control end of the gearbox 14 is fixedly connected with a control lever 13, so that the gearbox 14 can be conveniently controlled; the output shaft end of the reduction box 15 is rotatably connected with a stabilizing seat 27, and the stabilizing seat 27 is fixedly connected with the top of the mounting plate 1. One end of the rotating shaft 3 is rectangular, pin holes are formed in the surface of the rotating shaft 3, and the rotating wheel 28 can be rapidly assembled and disassembled. A console 29 is fixedly connected to one side of the top of the mounting plate 1. When the seedling raising machine is used, the internal combustion engine 11 is started, the differential mechanism 12 and the gearbox 14 are driven to rotate through the internal combustion engine 11, the control rod 13 is used for controlling, the driving shaft 6 rotates, the crawler belt 8 is driven to move through the driving wheel 7, the gearbox 15 is driven at the same time, and the seedling raising machine is driven to rotate through belt transmission; when turning, the operating rod 13 makes the track 8 rotate in the opposite direction; the hydraulic rod 23 is rotated to be in a vertical state, the hydraulic rod 23 is controlled to work through the console 29, the mounting plate 1 is lifted, the rotating wheel 28 is mounted to one end of the rotating shaft 3, the rotating wheel 28 is fixed through a bolt, and the transfer of the seedling raising machine is carried out.

The seedling raising machine in the embodiment comprises a seedling raising tray conveying device 37, wherein the seedling raising tray conveying device 37 is arranged at the upper part of a support frame 9, a movable conveying device 30 is arranged behind the seedling raising tray conveying device 37, a soil scraping and covering device 31 is arranged in front of the movable conveying device 30, the top of the support frame 9 is connected with a base 35 through bolts, and the base 35 is provided with a bottom soil conveying device 36, a seeding shaft 38 and a soil covering conveying device 32 from front to back; the whole sowing and soil spreading box 10 is arranged on the base 35, the chain transmission device 33 is arranged at the bottom of the base 35, the bottom soil scraping device 34 is arranged at the upper part of the chain transmission device 33, and the bottom soil scraping device 34 is positioned between the covering conveying device 32 and the bottom soil conveying device 36.

The differential mechanism 12 in this embodiment includes an outer casing 40, half-shaft spline hubs 41, a center ring 43, a driving ring 44, a left driven ring 45, a right driven ring 46, a spring seat 47, a left auxiliary spring 48 and a right auxiliary spring 49, the outer casing 40 is of a two-lobe structure and is connected into an integral structure by bolts, the outer casing 40 is further provided with a transmission mechanism in transmission connection with an engine output shaft, the middle part of the outer casing 40 is provided with two sets of half-shaft spline hubs 41 for externally connecting left and right rotating wheel half shafts, the left and right rotating wheel half shafts are respectively in spline connection with the corresponding half-shaft spline hubs 41, the installation is convenient, and the transmission torque is large; the inner side ends of the two groups of half-shaft spline hubs 41 are respectively provided with a snap ring 42, the central ring 43 is arranged between the two snap rings 42, the central ring 43 is limited between the two snap rings 42 and cannot axially move, the inner side of the driving ring 44 is slidably sleeved on the outer side of the central ring 43, the driving ring 44 and the central ring 43 can rotate relatively, the outer side of the driving ring 44 is connected to the outer shell 40, and similar to the prior art, 4 cylinders can be vertically distributed on the outer side of the driving ring 44 and are in a cross-shaped structure and used for connecting the outer shell 40; a left driven ring 45 and a right driven ring 46 are respectively installed on two sides of the driving ring 44 in a meshed mode, the left driven ring 45 and the right driven ring 46 are respectively meshed with the half-shaft spline hubs 41 on the corresponding sides in an axially slidable mode, specifically, spline teeth are arranged on inner holes of the left driven ring 45 and the right driven ring 46 and are in sleeved meshing with the spline teeth on the outer sides of the corresponding half-shaft spline hubs 41, torque is transmitted in the radial direction, and the axial direction can slide relatively; a left auxiliary spring 48 is arranged on the outer side wall of the left driven ring 45, and the left auxiliary spring 48 is compressed between a spring seat 47 arranged on the left half-shaft spline hub 41 and the left driven ring 45, so that the left driven ring 45 and the driving ring 44 are tightly combined together; a right auxiliary spring 49 is arranged on the outer side wall of the right driven ring 46, and the right auxiliary spring 49 is compressed between a spring seat 47 arranged on the right half-shaft spline hub 41 and the right driven ring 46, so that the right driven ring 46 and the driving ring 44 are tightly combined together; the driving ring 44 and the left driven ring 45, the driving ring 44 and the right driven ring 46 are provided with a latch structure which can be mutually engaged and driven, and can separate the driven ring at the fast rotating side from the driving ring 44 when a certain rotation speed difference exists between the left driven ring 45 and the right driven ring 46, the driving ring 44 and the driven ring are tightly combined by the pressure of the left and right auxiliary springs, only the latch structure is needed to be arranged on the driving ring 44 and the driven ring, and the driven ring at the fast rotating side is separated from the driving ring 44 when an overlarge rotation speed difference exists between the left driven ring 45 and the right driven ring 46 because of the slipping or suspension of the rotating wheel, and the driven ring at the non-slipping or suspended side is more tightly engaged with the driving ring 44, so the clutch has the advantages of simple structure, ingenious design, convenient use, reliable operation, long service life and the like, and when the vehicle runs on a suspended or slipping road surface, the slip problem of the rotating wheel is well solved, and the safety of the vehicle can be considered as necessary, so that the seedling raising machine can be driven by a single-side rotating wheel, the non-skid rotating wheel is used for driving the seedling raising machine to run, and the capacity of the seedling raising machine is obviously improved.

The latch structure in this embodiment includes convex latch 50 uniformly disposed on the outer side wall of the driving ring 44, and concave latch 51 uniformly disposed on the inner side walls of the left driven ring 45 and the right driven ring 46, where the convex latch 50 is a protrusion with a spherical structure, the concave latch 51 is a groove with a cylindrical structure, and the convex latch 50 is engaged with the concave latch 51. Adopt foretell latch structure, can increase the locking coefficient between left driven ring 45 and right driven ring 46 and the drive ring 44, and have horizontal moment, when the differential is big enough, protruding latch 50 card is inside concave latch 51, when the differential is too big for the rotating wheel, protruding latch 50 changes out in the concave latch 51, the face that protruding latch 50 and concave latch 51 contact only has spherical summit, the maximize reduces friction, and the meshing pressure of driven ring to the opposite side has been increased, compare with current jaw differential, need not to set up intermeshing's trapezoidal tooth between center ring 43 and the driven ring, the structure is simpler, it is more convenient to make, and spherical structure's protruding latch 50 and part lateral wall wearing and tearing are little, no rotational interference between the part, the fault rate is low, long service life. In addition, in order to effectively reduce the running noise of the differential, a silencing washer 53 is arranged in the concave latch 51, so that the abrasion and the friction generated between the left driven ring 45 and the driving ring 44 and between the right driven ring 46 and the driving ring 44 can be reduced, and the noise can be reduced. In this embodiment, the number and the depth of engagement of the male latch 50 and the female latch 51 may be determined according to specific requirements, and the engagement and disengagement requirements of the male latch 50 and the female latch 51 may be satisfied by combining the actions of the left and right auxiliary springs.

In addition, the spring seat 47 in the embodiment adopts a blocking gasket, so that the structure is simple and the arrangement is convenient. The bearings 52 are arranged at the left end and the right end of the outer shell 40, so that the seedling raising machine for the seedling bed can be conveniently arranged on a bracket for use, and the power transmission is better ensured. The outer side wall of the outer shell 40 is also sprayed with antirust paint, which can increase the service life of the seedling raising machine for the seedling bed. A central ring assembly hole 39 is also arranged on the outer side of the central ring 43, which is more convenient for the installation and the adjustment of the seedling raising machine for the rice field.

When the engine is used, the torque of the engine is transmitted to the outer shell 40 to drive the outer shell 40 to rotate, the outer shell 40 drives the driving ring 44 to rotate, the central ring 43 can freely rotate relative to the driving ring 44, but cannot axially move under the limitation of the snap ring 42, the driving ring 44 drives the left driven ring and the right driven ring to rotate, the left driven ring and the right driven ring drive the half-shaft spline hubs 41 on the corresponding sides to rotate, and the half-shaft spline hubs 41 are connected with external half shafts of the rotating wheels to drive the rotating wheels to rotate. When the seedling raising machine normally turns, the clamping tooth structures (force transmission teeth) of the two driven rings and the driving ring 44 are pressed more tightly, so that the driving ring 44 drives the two driven rings to rotate better and further drives the rotating wheels to rotate, although differential speed exists between the two rotating wheels, the rotating speed difference between the two driven rings is not enough to separate the convex clamping teeth 50 from the concave clamping teeth 51 due to the limitation of left and right auxiliary springs, and the convex clamping teeth 50 are clamped inside the concave clamping teeth 51, so that the vibration phenomenon when a vehicle turns is avoided. When the seedling raising machine slips, the rotating wheel on the slipping side has a rapid rotation trend, namely the driven ring on the side has a rapid rotation trend relative to the driving ring 44, after the differential speed of the rotating wheels on the two sides is too large, the convex latch 50 rotates out of the concave latch 51, the contact surface between the convex latch 50 and the concave latch 51 is only provided with a spherical vertex, the friction is reduced to the maximum extent, the locking force on the side is reduced, the pressure of the driven ring on the other side is increased, the driving ring 44 can more tightly bite the driven ring on the other side, the rotating wheel on the other side is driven by the driven wheel on the other side to control the vehicle body, and the safe passing of the seedling raising machine is ensured; also, when one side of the rotating wheel is suspended or enters a muddy, icy or snowy road surface, the torque of the driving ring 44 can be fully distributed to the other side of the driven ring, and then the side driven ring is re-engaged with the driving ring 44 again under the effect of the elastic force of the auxiliary spring, and the separation and engagement are repeated continuously, which causes pulsation and noise of power transmission and increases the wear of parts, which can be prevented by the installed noise reduction washer 53.

The invention relates to a seedling raising machine for a seedling bed, wherein a latch structure which can be mutually engaged and driven and can separate a driven ring at a fast rotating side from a driving ring when a certain rotating speed difference exists between a left driven ring and a right driven ring is arranged between the driving ring and the left driven ring and between the driving ring and the right driven ring, the latch structure is only required to be arranged on the driving ring and the driven ring, the driving ring and the driven ring are tightly combined by the pressure of a left auxiliary spring and a right auxiliary spring, and the driven ring at the fast rotating side is separated from the driving ring when an overlarge rotating speed difference exists between the left driven ring and the right driven ring due to the slipping or suspension of a rotating wheel, but the driven ring at the non-slipping or suspended side is more tightly engaged with the driving ring, so that the seedling raising machine has the advantages of simple structure, ingenious design, convenient use, reliable operation, long service life and the like, and can well solve the problem of slipping and idle running of the rotating wheel when, and the safety of the vehicle can be considered as necessary, so that the seedling raising machine can be driven by a single-side rotating wheel, the non-skid rotating wheel is used for driving the seedling raising machine to run, and the passing capacity of the seedling raising machine is obviously improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A seedling raising machine for a seedling bed comprises a mounting plate (1) and is characterized in that: the bottom fixedly connected with fixing base (2) of mounting panel (1), the center of fixing base (2) is rotated and is connected with axis of rotation (3), the fixed surface of axis of rotation (3) is connected with and rotates wheel (4), top one side fixedly connected with supporting seat (5) of mounting panel (1), the center of supporting seat (5) is rotated and is connected with drive shaft (6), the fixed surface of drive shaft (6) is connected with drive wheel (7), drive wheel (7) and rotate between wheel (4) and be connected through track (8) transmission, the vertical fixedly connected with support frame (9) in top of mounting panel (1), the top fixedly connected with seedling raising machine (10) of support frame (9), the top central authorities of mounting panel (1) fixedly connected with internal-combustion engine (11), differential mechanism (12) in proper order, the top of mounting panel (1) just is located differential mechanism (12) both sides fixedly connected with gearbox (14), the output end of the gearbox (14) is fixedly connected with the drive shaft (6), the top of the mounting plate (1) is close to a reduction gearbox (15) fixedly connected with one side of the differential (12), the input shaft surface of the differential (12) is fixedly connected with a first conical gear (16), the input shaft end of the reduction gearbox (15) is fixedly connected with a second conical gear (17), the first conical gear (16) is meshed with the second conical gear (17) and is connected with a belt pulley (18), the belt pulley (18) is in transmission connection with the seedling raising machine (10) through a first belt (19), one side of the reduction gearbox (15) is fixedly connected with a hydraulic pump station (20), the belt pulley (18) is in transmission connection with the hydraulic pump station (20) through a second belt (21), and two sides of the bottom of the mounting plate (1) are fixedly connected with a rotating seat (22), the center of rotating seat (22) rotates and is connected with hydraulic stem (23), the one end transmission of axis of rotation (3) is connected with runner (28), differential mechanism (12) are including shell body (40), half shaft spline hub (41), centre ring (43), driving ring (44), left driven ring (45), right driven ring (46), spring holder (47), left auxiliary spring (48) and right auxiliary spring (49), and the mid-mounting of shell body 40) has two sets of half shaft spline hubs (41) that are used for external left and right rotation wheel semi-axis.

2. The seedling raising machine for a seedling bed as claimed in claim 1, wherein: the inner side ends of the two groups of half-shaft spline hubs (41) are respectively provided with a snap ring (42), a center ring (43) is arranged between the two snap rings (42), the center ring (43) is limited between the two snap rings (42) and cannot axially float, the inner side of a driving ring (44) is slidably sleeved on the outer side of the center ring (43), the driving ring (44) and the center ring (43) can relatively rotate, the outer side of the driving ring (44) is connected to the outer shell (40), and the outer side of the driving ring (44) can be vertically provided with 4 cylinders in a cross structure and is used for connecting the outer shell (40); and a left driven ring (45) and a right driven ring (46) are respectively installed on two sides of the driving ring (44) in a meshed mode, and the left driven ring (45) and the right driven ring (46) are respectively meshed with the half-shaft spline hub (41) on the corresponding side in an axially sliding mode.

3. The seedling raising machine for a seedling bed as claimed in claim 2, wherein: a left auxiliary spring (48) is arranged on the outer side wall of the left driven ring (45), and the left auxiliary spring (48) is compressed between a spring seat (47) arranged on the left half-shaft spline hub (41) and the left driven ring (45) to enable the left driven ring (45) and the driving ring (44) to be tightly combined together; a right auxiliary spring (49) is arranged on the outer side wall of the right driven ring (46), and the right auxiliary spring (49) is compressed between a spring seat (47) arranged on the right half-shaft spline hub (41) and the right driven ring (46), so that the right driven ring (46) and the driving ring (44) are tightly combined together; and a latch structure which can be meshed with each other for transmission and can separate the driven ring at the fast rotating side from the driving ring (44) when a certain rotating speed difference exists between the left driven ring (45) and the right driven ring (46) is arranged between the driving ring (44) and the left driven ring (45) and between the driving ring (44) and the right driven ring (46).

4. The seedling raising machine for a seedling bed as claimed in claim 3, wherein: the latch structure includes protruding latch (50) evenly located on the drive ring (44) lateral wall, evenly locates concave latch (51) on left driven ring (45) and right driven ring (46) inside wall, and protruding latch (50) are the arch of sphere structure, and concave latch (51) are the recess of cylinder structure, and protruding latch (50) mesh mutually with concave latch (51).

5. The seedling raising machine for a seedling bed as claimed in claim 4, wherein: the output shaft end fixedly connected with of internal-combustion engine (11) is first cross-shaped shaft coupling (24), the one end fixedly connected with transmission shaft (25) of first cross-shaped shaft coupling (24), the one end fixedly connected with second cross-shaped shaft coupling (26) of transmission shaft (25), the one end of second cross-shaped shaft coupling (26) is connected with the input axle head of differential mechanism (12).

6. The seedling raising machine for a seedling bed as claimed in claim 1, wherein: one side fixedly connected with control rod (13) of gearbox (14) control end, the output axle head of reducing gear box (15) rotates and is connected with stabilizing seat (27), stabilizing seat (27) and the top fixed connection of mounting panel (1).

7. The seedling raising machine for a seedling bed as claimed in claim 1, wherein: one end of the rotating shaft (3) is rectangular, and a pin hole is formed in the surface of the rotating shaft (3).

8. The seedling raising machine for a seedling bed as claimed in claim 1, wherein: and a control console (29) is fixedly connected to one side of the top of the mounting plate (1).