CN210381870U

CN210381870U - A throw seedling machine for rice planting

Info

Publication number: CN210381870U
Application number: CN201920446800.4U
Authority: CN
Inventors: 赵晓亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-04-24
Anticipated expiration: 2029-04-03

Abstract

The utility model discloses a seedling throwing machine for rice planting relates to the agricultural machine field, has solved artifical seedling throwing mixed and disorderly, the row spacing degree of depth differs and the slow problem of speed, and its technical essential is: the seedling-separating machine comprises a rack, an inorganic gearbox, a power distribution shaft, a seedling-sending mechanism, a seedling-throwing mechanism, a seedling-taking mechanism and a seedling-separating mechanism, wherein the rack is fixedly connected with a walking tractor, the power input end of the inorganic gearbox is connected with a clutch of the walking tractor through a chain, the power output end of the inorganic gearbox is connected with the power distribution shaft through the chain, the power distribution shaft is fixed on the rack through a bearing, and the power distribution shaft is connected with the inorganic gearbox, the seedling-sending mechanism, the seedling-throwing mechanism, the seedling-taking mechanism and the seedling-separating mechanism through the chain; the utility model adjusts the gravity acceleration of seedling throwing through the seedling throwing tension spring, and compared with the traditional technology, the seedling depth is controllable; the utility model discloses still divide seedling device and rotate the seedling dish through setting up, when guaranteeing that the seedling clamp gets, the not area appears in succession, makes seedling quantity controllable.

Description

A throw seedling machine for rice planting

Technical Field

The utility model relates to the field of agricultural machinery, in particular to a seedling throwing machine for rice planting.

Background

The rice is one of herbaceous rice, belongs to cereals, is the most important and longest kind of grain in the rice, is different from the rice in upland field, the original China and India, and is planted in the Yangtze river basin of China seven thousand years ago.

Seedling raising and transplanting are needed before rice planting, a transplanter is adopted in the traditional seedling transplanting mode, when the transplanter is adopted to plant rice, a large number of seeds need to be sown during seedling raising, the problem that the density of seedlings is large and the root systems are weak is caused, the seedling transplanting can be carried out after mud such as field blocks need to be leveled and the like is deposited, weeds in the field blocks are difficult to control, and the transplanter easily causes mechanical damage to the seedlings, so that the seedlings turn green slowly, and the problem of rice yield reduction is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned defect, provide a throw seedling machine for rice planting to solve artifical throwing seedling in a jumble and has no chapter, the row spacing degree of depth differs, the slow problem of speed.

In order to achieve the above object, the utility model provides a following technical scheme:

a seedling throwing machine for rice planting comprises a rack, an inorganic gearbox, a power distribution shaft, a seedling sending mechanism, a seedling throwing mechanism, a seedling taking mechanism and a seedling separating mechanism, wherein the rack is fixedly connected with a walking tractor, the power input end of the inorganic gearbox is connected with a clutch on a power output shaft of the walking tractor gearbox connected to the rack through a chain, the power output end of the inorganic gearbox is connected with the power distribution shaft through the chain, the power distribution shaft is fixed to the rack through a bearing, the power distribution shaft is connected with the inorganic gearbox, the seedling sending mechanism, the seedling throwing mechanism, the seedling taking mechanism and the seedling separating mechanism through the chain, and the seedling sending mechanism, the seedling throwing mechanism, the seedling taking mechanism and the seedling separating mechanism are fixedly connected to the rack.

As the utility model discloses further scheme, divide seedling mechanism including dividing seedling baffle support, dividing the seedling baffle and hindering seedling baffle, divide seedling baffle support fixed connection at the conveyer belt support, divide seedling baffle fixed connection on dividing seedling baffle support, and divide seedling baffle and seedling dish cover fixed connection, hinder seedling baffle fixed connection on dividing seedling baffle support.

As a further scheme of the utility model, the seedling feeding mechanism comprises a seedling support plate, a conveyor belt support and a seedling feeding gearbox, a conveyor belt driving shaft and a conveyor belt driven shaft are arranged on the conveyor belt support, the conveyor belt driving shaft and the conveyor belt driven shaft are fixedly connected to the conveyor belt support through a bearing, the conveyor belt driving shaft and the conveyor belt driven shaft are connected through a conveyor belt, a seedling tray is arranged on the conveyor belt, a seedling blocking belt is arranged on the seedling tray, six sets of string rod chain wheels are further arranged on the conveyor belt support, two are arranged in each set, the string rod chain wheels are fixedly connected to the conveyor belt driven shaft, the string rod chain wheels are connected to the conveyor belt driving shaft through a chain, string rods are further fixedly connected to chains of the; a seedling tray cover is arranged outside the driving shaft of the conveying belt, the seedling tray cover is fixedly connected to the conveying belt bracket, and an empty tray collecting frame is fixedly connected below the seedling tray cover; the two ends of the seedling support plate are fixedly connected to the conveying belt support through bolts, a runway bearing is arranged below the seedling support plate, the runway bearing is arranged in a runway, and the runway is fixedly connected to the rack through the runway support.

As a further proposal of the utility model, a seedling feeding gearbox input shaft, a seedling feeding gearbox output shaft and a deflector rod are arranged in the seedling feeding gearbox, the seedling feeding gearbox input shaft is connected with a power distribution shaft through a chain, two ends of the seedling feeding gearbox output shaft are fixedly connected with a conveyer belt bracket through bearings, the seedling feeding gearbox output shaft is fixed on the seedling feeding gearbox through a linear bearing, and the seedling feeding gearbox output shaft is connected with a conveyer belt driving shaft through a chain; the seedling feeding gearbox input shaft is provided with two spiral push plates and single-arm shifting teeth, the spiral push plates are connected with the seedling feeding gearbox input shaft through flat keys, the spiral push plates are arranged oppositely, and the single-arm shifting teeth are fixedly connected with the seedling feeding gearbox input shaft; the two shifting rods are hinged with a box body of the seedling feeding gearbox and connected through a shifting rod reset spring, a shifting rod bearing and a shifting rod pushing tooth are arranged on the shifting rod, and a reset spring is arranged on the shifting rod pushing tooth;

the seedling feeding gearbox is characterized in that the output shaft of the seedling feeding gearbox is provided with sawteeth, a positioning gear and a positioning ball support, eight groups of sawteeth are arranged on the sawteeth, thirteen sawteeth are arranged in each group, the sawteeth of each group are spaced by 45 degrees, the left section and the right section of the output shaft of the seedling feeding gearbox are respectively provided with four groups of sawteeth, the left section and the right section of the sawteeth are opposite in direction, the positioning gear is fixedly connected with the output shaft of the seedling feeding gearbox, the positioning ball support is sleeved on the output shaft of the seedling feeding gearbox, the positioning ball support is arranged between the positioning gear and a baffle arranged on the output shaft of the seedling feeding gearbox, a positioning ball is arranged in the positioning ball support, a; the output shaft of the seedling feeding gearbox is provided with a dust cover.

As a further proposal of the utility model, the seedling taking mechanism comprises a seedling taking gearbox and a seedling taking shaft, the seedling taking shaft is fixedly connected on the frame through a bearing, a triple sprocket is fixedly connected on the seedling taking shaft, the triple sprocket is connected with a power distribution shaft through a chain, one end of the seedling taking shaft is provided with a seedling throwing shaft supporting arm, a weight iron is arranged below the seedling throwing shaft supporting arm, the seedling throwing shaft supporting arm is connected with the seedling taking shaft through a spline, the seedling throwing shaft supporting arm is connected with the seedling throwing shaft through a bearing, and the other end of the seedling taking shaft is connected with the seedling throwing gearbox through a spline and fixed by a lock wire; get the seedling gearbox outside and be covered with and get seedling gearbox box, inside is equipped with gets seedling gearbox main shaft, it passes through the chain and is connected with the triplex sprocket to get seedling gearbox main shaft, get the seedling axle and pass and get seedling gearbox box and pass through the oil blanket with getting seedling gearbox box and be connected, get the seedling axle and get the seedling support arm inside getting seedling gearbox box, it gets the seedling support arm through spline and support arm gland fixed connection on getting the seedling axle, it is equipped with support arm antifriction bearing on the seedling support arm to get, it is equipped with the orbital transfer runway on the seedling gearbox main shaft to get, orbital transfer runway fixed connection is on getting seedling gearbox main shaft.

As a further proposal of the utility model, the seedling throwing mechanism comprises a seedling throwing gear box, a seedling claw and a seedling throwing brake mechanism, a seedling throwing shaft and a main shaft of the seedling throwing gear box are arranged in the seedling throwing gear box, a seedling throwing shaft support arm is fixedly connected on the seedling throwing shaft, and one end of the seedling throwing shaft support arm is fixedly connected with a support arm fixed bearing through a bolt shaft; a cam is fixedly connected to the main shaft of the seedling-throwing gearbox; the main shaft of the seedling-throwing gear box is connected with a triple chain wheel through a chain, and the lower end of the seedling-throwing gear box is fixedly connected with a counterweight iron;

the seedling claw comprises a seedling claw frame, two seedling claw pieces, a seedling claw opening and closing horseshoe, a cross support arm and a triangular support arm, wherein the seedling claw frame is fixedly connected to a seedling throwing shaft, the seedling claw frame and the seedling claw pieces are fixedly connected through rivets, one end of the cross support arm is hinged to the seedling claw opening and closing horseshoe, the other end of the cross support arm is hinged to the triangular support arm, the seedling claw opening and closing horseshoe is hinged to a horseshoe shaft fixed on the seedling claw frame, the seedling claw pieces are made of spring steel, the number of the seedling claw pieces is two, the seedling claw pieces are provided with triangular support arms, the triangular support arms are hinged to the triangular support arm frame, the seedling claw opening and closing horseshoe is also provided with a seedling claw closing support arm, and the seedling claw closing support; the seedling claw piece is provided with a rubber sleeve, the outer side of the seedling claw is also provided with a windproof cylinder, and the windproof cylinder is also fixedly connected with a horseshoe stop block and a seedling claw opening support arm;

the seedling throwing brake mechanism comprises a seedling throwing brake arm, a damping support, a seedling throwing tension spring and a damping ball, the damping support is fixedly connected to the rack, the damping ball is a rubber ball and is fixedly connected to the damping support, the seedling throwing tension spring is connected with the seedling throwing brake arm and the damping support, the seedling throwing brake arm is arranged in parallel with a seedling claw, and the seedling throwing brake arm is fixedly connected to a seedling throwing shaft.

To sum up, compared with the prior art, the utility model has the following beneficial effects:

1. the utility model adjusts the gravity acceleration of seedling throwing through the seedling throwing tension spring, and the seedling depth is controllable compared with the traditional technology.

2. The utility model discloses a wind-proof section of thick bamboo is set up and is reduced the influence of wind to the seedling, makes the seedling plant more neatly.

3. The utility model discloses a setting up and dividing the seedling device and rotating the seedling dish, when guaranteeing that the seedling clamp gets, the not area appears in succession, makes seedling quantity controllable.

4. The utility model discloses a send seedling gearbox to accomplish the location and send seedling work, improve the precision that the clamp got the seedling.

5. The utility model adjusts the seedling throwing frequency through the stepless speed change device to lead the seedling plant spacing to be adjusted at will and accurately.

Drawings

FIG. 1 is a schematic structural view of a seedling thrower for rice planting.

FIG. 2 is a right side view of the seedling thrower for rice planting.

Fig. 3 is a left side view of the seedling thrower for rice planting.

FIG. 4 is a top view of the seedling thrower for rice planting.

Fig. 5 is a lower view of the seedling thrower for rice planting.

Fig. 6 is a cross-sectional view of P-P in fig. 1.

Fig. 7 is a sectional view taken along line H-H in fig. 5.

FIG. 8 is a schematic structure of a seedling taking gearbox of the seedling thrower for rice planting.

Fig. 9 is a cross-sectional view a-a of fig. 8.

Fig. 10 is a schematic structural view of a seedling feeding gearbox in the seedling thrower for rice planting.

Fig. 11 is a cross-sectional view of D-D in fig. 10.

Fig. 12 is a sectional view of G-G in fig. 11.

Fig. 13 is a cross-sectional view of C-C in fig. 10.

Fig. 14 is a view from direction E of fig. 10.

Fig. 15 is a view from direction T of fig. 10.

FIG. 16 is a sectional view of the B-B seedling-throwing gearbox in FIG. 1.

Fig. 17 is a cross-sectional view of F-F in fig. 16.

Fig. 18 is a cross-sectional view of L-L in fig. 1.

FIG. 19 is a schematic structural view of seedling claws of the seedling thrower for rice planting.

Fig. 20 is a cross-sectional view of K-K in fig. 19.

Fig. 21 is an N-direction view of fig. 1.

Fig. 22 is a cross-sectional view of O-O in fig. 21.

Fig. 23 is a cross-sectional view of Q-Q in fig. 1.

FIG. 24 is a top view of a specialized bowl in a seedling thrower for rice planting.

Fig. 25 is a cross-sectional view of W-W in fig. 24.

Fig. 26 is a cross-sectional view of V-V in fig. 24.

FIG. 27 is a schematic view of the structure of a seedling tray.

Reference numerals: 1-a machine frame, 2-an inorganic gearbox, 3-a power distribution shaft, 4-a seedling supporting plate, 5-a conveyer belt bracket, 6-a conveyer belt driving shaft, 7-a conveyer belt driven shaft, 8-a seedling taking gearbox, 9-a seedling taking shaft, 10-a triple chain wheel, 11-a seedling throwing brake arm, 12-a seedling taking gearbox box, 13-a seedling taking gearbox main shaft, 14-a seedling taking arm, 15-an arm gland, 16-an arm rolling bearing, 17-an orbital transfer runway, 18-a seedling sending gearbox, 19-a seedling sending gearbox input shaft, 20-a seedling sending gearbox output shaft, 21-a deflector rod, 22-a spiral push plate, 23-a single-arm deflector tooth, 24-a deflector rod reset spring, 25-a deflector rod shaft and 26-a deflector rod push tooth, 27-positioning gear, 28-positioning ball support, 29-positioning ball, 30-guide rail, 31-seedling-throwing gear box, 32-seedling claw, 33-seedling-throwing shaft, 34-seedling-throwing gear box main shaft, 35-counterweight iron, 36-seedling-throwing shaft support arm, 37-support arm fixed bearing, 38-cam, 39-seedling claw support, 40-seedling claw piece, 41-cross, 42-cross support arm, 43-triangle support arm, 44-triangle support arm, 45-seedling claw opening and closing shoe iron, 46-shoe iron shaft, 47-seedling separation clapboard support, 48-seedling separation clapboard, 49-seedling blocking clapboard, 50-runway bearing, 51-runway, 52-damping support, 53-seedling-throwing tension spring, 54-damping ball, 55-seedling tray, 56-string rod, 57-string rod chain wheel, 58-seedling tray cover, 59-empty tray collecting rack, 60-windproof cylinder, 61-horseshoe baffle, 62-seedling throwing shaft supporting arm, 63-seedling claw opening supporting arm, 64-seedling blocking belt, 65-reset spring and 66-chain.

Detailed Description

The technical solution 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 some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

As shown in fig. 1-26, a seedling thrower for rice planting comprises a frame 1, an inorganic gearbox 2, a power distribution shaft 3, a seedling feeding mechanism, a seedling throwing mechanism, a seedling taking mechanism and a seedling separating mechanism, wherein the front end of the frame 1 is connected with a hand tractor, the power input end of the inorganic gearbox 2 is connected with a clutch on the power output shaft of the hand tractor gearbox through a chain 66, the power output end of the inorganic gearbox 2 is connected with the power distribution shaft 3 through the chain 66, the power distribution shaft 3 is fixed on the frame 1 through a bearing, the power distribution shaft 3 is connected with the inorganic gearbox 2, the seedling feeding mechanism, the seedling throwing mechanism, the seedling taking mechanism and the seedling separating mechanism through the chain 66, and the seedling feeding mechanism, the seedling throwing mechanism, the seedling taking mechanism and the seedling separating mechanism are fixedly connected on the frame 1;

the seedling conveying mechanism is provided with a seedling supporting plate 4 and a conveyer belt support 5, the seedling supporting plate 4 is used for placing seedlings, the conveyer belt support 5 is provided with a conveyer belt driving shaft 6 and a conveyer belt driven shaft 7, the conveyer belt driving shaft 6 and the conveyer belt driven shaft 7 are fixedly connected to the conveyer belt support 5 through bearings, the conveyer belt driving shaft 6 and the conveyer belt driven shaft 7 are connected through a conveyer belt, the conveyer belt is provided with a seedling tray 55, the seedling tray 55 is used for conveying seedlings, and the seedling tray 55 is provided with a seedling blocking belt 64; six groups of twelve string rod chain wheels 57 are arranged on the conveying belt driving shaft 6 and the conveying belt driven shaft 7, the string rods 56 are fixedly connected with chains 66 on the string rod chain wheels 57, the string rods 56 are provided with forty-five strings, the string rod chain wheels 57 are connected with the conveying belt driving shaft 6 and the conveying belt driven shaft 7 through the chains 66 and are used for driving the seedling trays 55 to move, the string rods 56 and the chains 66 form a string rod chain mesh-free conveyor belt, the distance between the string rods 56 corresponds to the distance between the rice bowl bodies, and the distance between the chains 66 corresponds to the width of the rice bowl bodies, so that the seedling trays cannot move back and forth and left and right on the conveying belt; a seedling tray cover 58 is arranged on the outer side of the driving shaft 6 of the conveying belt, the seedling tray cover 58 is fixedly connected to the conveying belt bracket 5, and an empty tray collecting frame 59 is fixedly connected below the seedling tray cover 58 and used for collecting seedling trays 55; the two ends of the seedling support plate 4 are fixedly connected to the conveyer belt bracket 5 through bolts, a runway bearing 50 is arranged below the seedling support plate 4, the runway bearing 50 freely rolls in a runway 51, and the runway 51 is fixedly connected to the rack 1 through the runway bracket;

as shown in fig. 24-27, the seedling tray 55 is a special seedling tray, the seedling tray 55 is provided with seedling-stopping belts 64, the seedling-stopping belts 64 are arranged between the pot bodies of the seedling tray, and the seedling-stopping belts 64 are arranged intermittently;

the seedling conveying mechanism further comprises a seedling conveying gearbox 18, a seedling conveying gearbox input shaft 19, a seedling conveying gearbox output shaft 20 and a shift lever 21 are arranged in the seedling conveying gearbox 18, the seedling conveying gearbox input shaft 19 is connected with the power distribution shaft 3 through a chain 66 and used for inputting power, the seedling conveying gearbox output shaft 20 is fixed on the seedling conveying gearbox 18 through a linear bearing, two ends of the seedling conveying gearbox output shaft 20 are connected with the conveyer belt bracket 5 through bearings, the seedling conveying gearbox output shaft 20 is connected with the conveyer belt driving shaft 6 through a chain 66 and used for transmitting power to the conveyer belt driving shaft 6 through the seedling conveying gearbox output shaft 20 so as to drive the conveyer belt to rotate; the seedling feeding gearbox input shaft 19 is provided with two spiral push plates 22 and two single-arm shifting teeth 23, the spiral push plates 22 are connected with the seedling feeding gearbox input shaft 19 through flat keys, the spiral push plates 22 are arranged oppositely, and the single-arm shifting teeth 23 are fixedly connected with the seedling feeding gearbox input shaft 19; the two shift levers 21 are arranged, the two shift levers 21 are hinged with the box body of the seedling feeding gearbox 18, the two shift levers 21 are connected through a shift lever return spring 24, a shift lever bearing 25, a shift lever push tooth 26 and a return spring 65 are arranged on the shift lever 21, and the return spring 65 is used for work return of the shift lever push tooth 26; the seedling feeding gearbox output shaft 20 is provided with sawteeth, a positioning gear 27 and a positioning ball support 28, the sawteeth are provided with eight groups, each group is provided with 13 sawteeth, the sawteeth of each group are spaced by 45 degrees, the left section and the right section of the seedling feeding gearbox output shaft 20 are respectively provided with four groups of sawteeth, the directions of the left section and the right section of the sawteeth are opposite, the positioning gear 27 is fixedly connected with the seedling feeding gearbox output shaft 20, the positioning ball support 28 is sleeved on the seedling feeding gearbox output shaft 20, the positioning ball support 28 is arranged between the positioning gear 27 and a baffle arranged on the seedling feeding gearbox output shaft 20, a positioning ball 29 is arranged in the positioning ball support 28, a ball spring is arranged between the positioning ball 29 and the positioning ball support 28, the positioning ball 29 is in sliding connection with a guide rail 30 arranged on a box body of the seedling feeding gearbox, driving the deflector rod 21 to swing, thereby driving the output shaft 20 of the seedling feeding gearbox to reciprocate and positioning the ball support 28; a dust cover is arranged on the output shaft 20 of the preferable seedling feeding gearbox;

the seedling taking mechanism comprises a seedling taking gearbox 8 and a seedling taking shaft 9, the seedling taking shaft 9 is fixedly connected to the rack 1 through a bearing, the seedling taking shaft 9 penetrates through the seedling throwing mechanism, a triple chain wheel 10 is arranged on the seedling taking shaft 9, the triple chain wheel 10 is connected with the power distribution shaft 3 through a chain 66 and used for completing power input, one end of the seedling taking shaft 9 is provided with a seedling throwing shaft supporting arm 62, the seedling throwing shaft supporting arm 62 is connected with the seedling taking shaft 9 through a spline, the seedling throwing shaft supporting arm 62 is connected with a seedling throwing shaft 33 through a bearing and used for supporting the seedling throwing shaft 33, and the other end of the seedling taking shaft 9 is connected with the seedling throwing gearbox 31 through a spline and fixed through a lock wire; a seedling taking gearbox body 12 is covered on the outer side of the seedling taking gearbox 8, a seedling taking gearbox main shaft 13 is arranged in the seedling taking gearbox 8, the seedling taking gearbox main shaft 13 is connected with a triple sprocket 10 through a chain 66 and used for power input, a seedling taking shaft 9 penetrates through the seedling taking gearbox body 12 and is connected with the seedling taking gearbox body 12 through an oil seal, a seedling taking support arm 14 is arranged in the seedling taking gearbox body 12 of the seedling taking shaft 9, the seedling taking support arm 14 is fixedly connected to the seedling taking shaft 9 through a spline and a support arm gland 15, a support arm rolling bearing 16 is arranged on the seedling taking support arm 14, an orbital transfer runway 17 is arranged on the seedling taking gearbox main shaft 13, the orbital transfer runway 17 is fixedly connected to the seedling taking gearbox main shaft 13, and the seedling taking variable gearbox main shaft 13 rotates to drive the orbital transfer runway 17 to rotate, so that the seedling taking support arm 14 is;

the seedling throwing mechanism comprises a seedling throwing gear box 31, seedling claws 32 and a seedling throwing braking mechanism, a seedling throwing shaft 33 and a seedling throwing gear box main shaft 34 are arranged in the seedling throwing gear box 31, a seedling throwing shaft support arm 36 is fixedly connected to the seedling throwing shaft 33, and one end of the seedling throwing shaft support arm 36 is fixedly connected with a support arm fixed bearing 37 through a bolt shaft; a cam 38 is fixedly connected to the main shaft 34 of the seedling-throwing gear box, the cam 38 rotates to drive the support arm 36 of the seedling-throwing shaft to swing, so as to drive the seedling-throwing shaft 33 to rotate in a reciprocating manner, so as to drive the seedling claws 32 to complete the seedling-throwing action, and the main shaft 34 of the seedling-throwing gear box is connected with the triple chain wheel 10 through a chain 66; the lower ends of the seedling-throwing gear box 31 and the seedling-throwing shaft supporting arm 62 are fixedly connected with a balance weight iron 35 for balancing the eccentricity generated by the seedling taking shaft 9, the seedling-throwing gear box 31, the seedling-throwing shaft supporting arm 62, the seedling-throwing shaft 33 and the seedling claw 32 when the seedling taking shaft 9 swings back and forth to take seedlings, so that the vibration of the seedling-throwing machine is reduced; the seedling claw 32 comprises a seedling claw frame 39, seedling claw pieces 40, seedling claw opening and closing shoes 45, a cross support arm 42 and triangular support arms 43, the seedling claw frame 39 is fixedly connected to the seedling throwing shaft 33, the seedling claw frame 39 and the seedling claw pieces 40 are fixedly connected through rivets, one end of the cross support arm 42 is hinged to the seedling claw opening and closing shoes 45, the other end of the cross support arm is hinged to the triangular support arms 43, the seedling claw opening and closing shoes 45 are hinged to the shoe shaft 46 fixed to the seedling claw frame 39, the seedling claw pieces 40 are made of spring steel, the number of the seedling claw pieces 40 is two, the seedling claw pieces 40 are provided with triangular support arms 44, the triangular support arms 44 are hinged to the triangular support arms 44, the seedling claw opening and closing shoes 45 are further provided with seedling claw closing support arms 41, the seedling claw closing support arms 41 are fixedly connected to the seedling claw opening and closing shoes 45, and the seedling claw closing support arms 41 are used for closing the closed; the seedling claw opening and closing horseshoe 45 drives the cross support arm 42 to reciprocate through the horseshoe shaft 46, so as to drive the triangular support arm 43 to push the seedling claw piece 40 to open and close, and the seedling clamping and throwing work is completed; preferably, the seedling claw piece 40 is further provided with a rubber sleeve for protecting seedlings, the outer side of the seedling claw 32 is further provided with a windproof cylinder 60, the seedlings are thrown to the ground through the windproof cylinder 60 for reducing the influence of wind on the direction of the seedlings during seedling throwing, the windproof cylinder 60 is fixedly connected to the rack 1, the windproof cylinder 60 is further fixedly connected with a horseshoe stop 61 and a seedling claw opening support arm 63 for closing the seedling claw during seedling grabbing and opening the seedling claw during seedling throwing; the seedling throwing brake mechanism comprises a seedling throwing brake arm 11, a damping support 52, a seedling throwing tension spring 53 and a damping ball 54, the damping support 52 is fixedly connected to the frame 1, the damping ball 54 is a rubber ball, the damping ball 54 is fixedly connected to the damping support 52, the seedling throwing tension spring 53 is connected with the seedling throwing brake arm 11 and the damping support 52 and used for generating gravity acceleration when seedling claws throw seedlings downwards, the tension of the seedling throwing tension spring 53 is adjustable, the seedling throwing tension spring 53 is connected with the seedling throwing brake arm 11 and the damping support 52, the seedling throwing brake arm 11 is arranged in parallel with the seedling claws 32, and the seedling throwing brake arm 11 is fixedly connected to a seedling throwing shaft 33; in the process of seedling throwing by pulling the seedling throwing brake arm 11 by the seedling throwing tension spring 53, the shock absorption bracket 52 and the shock absorption ball 54 can block the seedling throwing brake arm 11 to stop instantly to finish the seedling throwing action, and the shock absorption ball 54 can buffer the impact force generated in the seedling throwing process;

the seedling separating mechanism comprises a seedling separating partition plate support 47, a seedling separating partition plate 48 and a seedling blocking partition plate 49, the seedling separating partition plate support 47 is fixedly connected to the conveying belt support 5, the seedling separating partition plate 48 is fixedly connected to the seedling separating partition plate support 47, the lower portion of the seedling separating partition plate 48 is fixedly connected with a seedling tray cover 58 and used for grouping seedlings and separating soil layers on a seedling tray 55, the seedling taking mechanism is convenient to take the seedlings, the seedling blocking partition plate 49 is fixedly connected to the seedling separating partition plate support 47 and used for preventing the seedlings from being connected during seedling taking, a seedling blocking belt 64 is arranged on the seedling tray 55, the seedling blocking belt 64 can effectively prevent the seedlings from being connected during seedling taking, and the thickness of the soil layers on the seedling tray 55 can be effectively controlled during seedling growing, so that the seedlings are more orderly;

preferably, the length of the chain 66 at the various connections is determined by the physical dimensions of the mechanism.

To sum up, the utility model discloses a theory of operation is:

the diesel engine transmits power to the power distribution shaft 3 through the clutch and the MB04 stepless speed changing box 2, the power distribution shaft 3 transmits the power to the seedling taking speed changing box main shaft 13, the seedling sending speed changing box input shaft 19 and the seedling throwing speed changing box main shaft 34 through the chain 66 and the triple sprocket 10, so that the seedling taking speed changing box main shaft 13, the seedling sending speed changing box input shaft 19 and the seedling throwing speed changing box main shaft 34 rotate in the same speed and the same direction;

when the cam 38 in the seedling throwing gearbox 31 starts to rotate from the lower dead point, the helicoids of the two spiral push plates 22 in the seedling feeding gearbox 18 start to work simultaneously, one of the spiral push plates 22 does idle rotation because the poking rod push teeth 26 on the poking rod 21 on the same side of the one spiral push plate 22 correspond to the non-sawtooth surfaces between the two groups of sawteeth on the seedling feeding gearbox output shaft 20, the spiral push plate 22 on the other side starts to work oppositely, meanwhile, the orbit runway 17 in the seedling taking gearbox 12 enters a non-working area of 250 degrees, and the seedling taking shaft 9 is in a static state; when the input shaft 19 of the seedling feeding gearbox, the main shaft 13 of the seedling taking gearbox and the main shaft 34 of the seedling throwing gearbox rotate 133 degrees in the same speed and the same direction, the spiral push plate 22 in the seedling feeding gearbox 18 finishes working, and the spiral push plate 22 pushes the seedling feeding mechanism and the seedling separating mechanism to transversely move once to finish transverse seedling feeding; meanwhile, the cam 38 in the seedling-throwing gear box 31 pushes the seedling-throwing shaft 33 to swing upwards, so that the seedling claw 32 forms an angle of 50 degrees with the horizontal plane, and at the moment, the change wheel runway 17 in the seedling-taking gear box 12 is still in a non-working area of 250 degrees, so that the seedling-taking shaft 9 is still in a static state; the input shaft 19 of the seedling delivery gearbox, the main shaft 13 of the seedling taking gearbox and the main shaft 34 of the seedling throwing gearbox rotate 84 degrees at the same speed and the same direction, at the same time, the cam 38 enters a fan-shaped non-working area of 84 degrees and does not push the seedling throwing shaft 33 to swing upwards any more, the seedling throwing shaft 33 and the seedling claw 32 are in a static state, meanwhile, the change-wheel runway 17 in the seedling taking gearbox 12 enters a 110-degree track-changing working area, the track-changing runway 17 pushes the seedling taking shaft 9 to drive the supporting arm 62 of the seedling throwing shaft, the seedling throwing braking arm 11 of the seedling throwing gearbox 31 and the seedling claw 32 swing forwards, the shoe baffle plate 61 pushes the cross 41 to drive the opening and closing shoe 45 of the seedling claw to rotate to close the seedling claw, so that the seedling claw 32 clamps seedlings from the seedling separating mechanism, and simultaneously, the spiral push plate 22 in the seedling delivery gearbox 18 enters a 227-degree non; the input shaft 19 of the seedling delivery gearbox, the main shaft 13 of the seedling taking gearbox and the main shaft 34 of the seedling throwing gearbox continue to rotate at the same speed and the same direction for 26 degrees, at the moment, the orbit runway 17 in the seedling taking gearbox 12 pushes the seedling taking shaft 9 to return to the initial position, the seedling taking is finished, the seedling throwing shaft 33 returns to the upper part of the seedling taking shaft 9, meanwhile, the cam 38 in the seedling throwing gearbox 31 rotates through a non-working area, the cam 38 pushes the seedling throwing shaft 33 to swing upwards, meanwhile, the spiral push plate 22 in the seedling delivery gearbox 18 is positioned in the non-working area of 227 degrees, and the seedling delivery mechanism is in a static state; the input shaft 19 of the seedling feeding gearbox, the main shaft 13 of the seedling taking gearbox and the main shaft 34 of the seedling throwing gearbox continue to rotate in the same speed and the same direction for 117 degrees, at the moment, the orbital transfer runway 17 enters a 250-degree non-working area, the seedling taking shaft 9 is in a static state, meanwhile, the spiral push plate 22 in the seedling feeding gearbox 18 is still in a 227-degree non-working area, the seedling feeding mechanism is in a static state, the cam 38 in the seedling throwing gearbox 31 rotates to push the seedling throwing shaft 33 and the seedling claw 32 to swing upwards until the upper stop point of the cam 38 is separated from the arm bearing 37, the seedling throwing tension spring 53 rapidly pulls the seedling throwing brake arm 11 on the seedling throwing shaft 33 and the seedling claw 32 back to the horizontal position, meanwhile, the seedling claw opening arm 63 rapidly pushes the seedling claw opening and closing shoe 45 to rotate so that the seedling claw 32 rapidly completes the gravity acceleration seedling throwing action, at the moment, the input shaft 19 of the seedling feeding gearbox, the main shaft, the first seedling feeding and throwing is finished;

when twelve seedlings are delivered, the seedling taking and throwing working process is not expressed, when the seedling is delivered for the thirteenth time, the spiral push plate 22 pushes the poking rod 21 to drive the seedling delivering mechanism to transversely move, when the 133-degree working inclined plane of the spiral push plate 22 rotates 49 degrees, the poking rod 21 pushes the positioning gear 27 on the output shaft 20 of the seedling delivering gearbox to a position which is not corresponding to the single-arm poking tooth 23, the single-arm poking tooth 23 does idle rotation, the spiral push plate 22 continues to push the seedling delivering mechanism to transversely move to complete the thirteenth seedling delivery, at the moment, the single-arm poking tooth 23 and the positioning gear 27 move to corresponding positions, when the spiral push plate 22 does work again, the fourteenth time of longitudinal seedling delivery is started, at the moment, the two poking rod pushing teeth 26 and the sawtooth are in idle positions, the spiral push plate 22 rotates to not push the seedling delivering mechanism to transversely deliver the seedlings, when the 133-degree working inclined plane of the spiral push plate 22 rotates 49 degrees, the single-arm pok, the seedling conveying gearbox output shaft 20 is driven to rotate by 45 degrees, the conveying belt driving shaft 6 is driven to rotate by the seedling conveying gearbox output shaft 20 through a chain 66, the tandem chain wheel 57 is driven to rotate by one tooth, meanwhile, a positioning pit on the positioning gear 27 corresponds to a positioning ball 29 on the positioning ball support 28, and the longitudinal positioning seedling conveying is completed, at the moment, the two driving lever push teeth 26 and the saw teeth are still in a reactive position, so that the spiral push plate 22 pushes the two driving levers 21 to do one reactive rotation in a 133-degree working area, when the spiral push plate 22 starts to do work again, the driving lever push teeth 26 on the driving lever 21 on the other side correspond to the saw teeth on one side of the driving lever, the spiral push plate 22 on the same side starts to work, and the reverse-direction.

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 throwing machine for rice planting comprises a frame (1), a power distribution shaft (3), a seedling sending mechanism, a seedling throwing mechanism and a seedling taking mechanism, wherein the power distribution shaft (3) is fixed on the frame (1) through a bearing, it is characterized by also comprising an inorganic gearbox (2) and a seedling separating mechanism, wherein the power input end of the inorganic gearbox (2) is connected with a clutch on the power output shaft of the gearbox of the walking tractor connected with the frame (1) through a chain (66), the power output end of the inorganic gearbox (2) is connected with a power distribution shaft (3) through the chain (66), the power distribution shaft (3) is connected with the inorganic gearbox (2), the seedling feeding mechanism, the seedling throwing mechanism, the seedling taking mechanism and the seedling separating mechanism through a chain (66), and the seedling feeding mechanism, the seedling throwing mechanism, the seedling taking mechanism and the seedling separating mechanism are fixedly connected to the rack (1);

the seedling throwing mechanism is provided with a seedling throwing braking mechanism for gravity acceleration seedling throwing, the seedling throwing braking mechanism comprises a seedling throwing braking arm (11), a damping bracket (52), a seedling throwing tension spring (53) and a damping ball (54), the damping bracket (52) is fixedly connected to the rack (1), the damping ball (54) is a rubber ball, the damping ball (54) is fixedly connected to the damping bracket (52), the seedling throwing tension spring (53) is connected with the seedling throwing braking arm (11) and the damping bracket (52), the seedling throwing braking arm (11) and a seedling claw (32) in the seedling throwing mechanism are arranged in parallel, and the seedling throwing braking arm (11) is fixedly connected to a seedling throwing shaft (33) on the seedling throwing mechanism.

2. The seedling throwing machine for rice planting according to claim 1, wherein the seedling feeding mechanism comprises a seedling support plate (4), a conveyor belt support (5) and a seedling feeding gearbox (18), a conveyor belt driving shaft (6) and a conveyor belt driven shaft (7) are arranged on the conveyor belt support (5), the conveyor belt driving shaft (6) and the conveyor belt driven shaft (7) are fixedly connected to the conveyor belt support (5) through bearings, a string rod (56) and a string rod chain wheel (57) are further arranged on the conveyor belt support (5), the string rod chain wheel (57) is fixedly connected to the conveyor belt driven shaft (7), the string rod chain wheel (57) is connected to the conveyor belt driving shaft (6) through a chain (66), the string rod (56) is fixedly connected to the chain (66) on the string rod chain wheel (57), and five string rods (56) are arranged; a seedling tray cover (58) is arranged on the outer side of the driving shaft (6) of the conveying belt, the seedling tray cover (58) is fixedly connected to the conveying belt bracket (5), and an empty tray collecting rack (59) is fixedly connected below the seedling tray cover (58); two ends of the seedling support plate (4) are fixedly connected to the conveyor belt bracket (5) through bolts, a runway bearing (50) is arranged below the seedling support plate (4), the runway bearing (50) is arranged in a runway (51), the runway (51) is fixedly connected to the rack (1) through the runway bracket, a seedling tray (55) is arranged on the string rod (56), and a seedling blocking belt (64) is arranged on the seedling tray (55);

a seedling feeding gearbox input shaft (19), a seedling feeding gearbox output shaft (20) and a deflector rod (21) are arranged in the seedling feeding gearbox (18), the seedling feeding gearbox input shaft (19) is connected with a power distribution shaft (3) arranged on the rack (1) through a chain (66), the seedling feeding gearbox output shaft (20) is fixed on the seedling feeding gearbox (18) through a linear bearing, two ends of the seedling feeding gearbox output shaft (20) are fixedly connected with a conveyer belt bracket (5) through bearings, and the seedling feeding gearbox output shaft (20) is connected with a conveyer belt driving shaft (6) through the chain (66); the seedling feeding gearbox input shaft (19) is provided with two spiral push plates (22) and two single-arm shifting teeth (23), the spiral push plates (22) are connected with the seedling feeding gearbox input shaft (19) through a flat key, the spiral push plates (22) are arranged oppositely, and the single-arm shifting teeth (23) are fixedly connected with the seedling feeding gearbox input shaft (19); the two shifting rods (21) are hinged with the box body of the seedling feeding gearbox (18), the two shifting rods (21) are connected through a shifting rod reset spring (24), a shifting rod bearing (25) and a shifting rod pushing tooth (26) are arranged on the shifting rod (21), and a reset spring (65) is arranged on the shifting rod pushing tooth (26);

the seedling feeding gearbox is characterized in that sawteeth, a positioning gear (27) and a positioning ball support (28) are arranged on an output shaft (20) of the seedling feeding gearbox, eight groups of sawteeth are arranged on the sawteeth, thirteen sawteeth are arranged on each group, the interval between every two groups of sawteeth is 45 degrees, four groups of sawteeth are respectively arranged on the left section and the right section of the output shaft (20) of the seedling feeding gearbox, the left section and the right section of the sawteeth are opposite in direction, the positioning gear (27) is fixedly connected with the output shaft (20) of the seedling feeding gearbox, the positioning ball support (28) is sleeved on the output shaft (20) of the seedling feeding gearbox, the positioning ball support (28) is arranged between the positioning gear (27) and a baffle plate arranged on the output shaft (20) of the seedling feeding gearbox, positioning balls (29) are arranged in the positioning ball support (28), a ball spring is arranged between the positioning balls (, a positioning pit is arranged in the guide rail (30); the output shaft (20) of the seedling feeding gearbox is provided with a dust cover.

3. The seedling throwing machine for rice planting according to claim 2, wherein the seedling taking mechanism comprises a seedling taking gearbox (8) and a seedling taking shaft (9), the seedling taking shaft (9) is fixedly connected to the rack (1) through a bearing, the seedling taking shaft (9) penetrates through the seedling throwing mechanism, a triple sprocket (10) is fixedly connected to the seedling taking shaft (9), the triple sprocket (10) is connected with the power distribution shaft (3) through a chain (66), one end of the seedling taking shaft (9) is provided with a seedling throwing shaft supporting arm (62), a balance weight iron (35) is arranged below the seedling throwing shaft supporting arm (62), the seedling throwing shaft supporting arm (62) is connected with the seedling taking shaft (9) through a spline, the seedling throwing shaft supporting arm (62) is connected with the seedling throwing shaft (33) through a bearing, and the other end of the seedling taking shaft (9) is connected with the seedling throwing gearbox (31) through a spline and is fixed through a lock wire; get seedling gearbox (8) outside and be covered with and get seedling gearbox box (12), inside is equipped with gets seedling gearbox main shaft (13), it is connected with trigeminy sprocket (10) through chain (66) to get seedling gearbox main shaft (13), it passes and gets seedling gearbox box (12) and is connected through the oil blanket with getting seedling gearbox box (12) to get seedling axle (9), it gets seedling axle (9) and is getting inside being equipped with of seedling gearbox box (12) and gets seedling support arm (14), it passes spline and support arm gland (15) fixed connection on getting seedling axle (9) to get seedling support arm (14), it is equipped with antifriction bearing (16) on seedling support arm (14), it is equipped with orbital transfer runway (17) on seedling gearbox main shaft (13) to get, orbital transfer runway (17) fixed connection is on getting seedling gearbox main shaft (13).

4. The seedling thrower for rice planting according to claim 3, wherein the seedling thrower comprises a seedling throwing gearbox (31), a seedling claw (32) and a seedling throwing brake arm (11), a seedling throwing gearbox main shaft (34) is arranged in the seedling throwing gearbox (31), a seedling throwing shaft support arm (36) is fixedly connected to the seedling throwing shaft (33), and one end of the seedling throwing shaft support arm (36) is fixedly connected with a support arm fixed bearing (37) through a bolt shaft; a cam (38) is fixedly connected to a main shaft (34) of the seedling-throwing gear box; a main shaft (34) of the seedling-throwing gear box is connected with a triple sprocket (10) through a chain (66), and the lower end of the seedling-throwing gear box (31) is fixedly connected with a counterweight iron (35);

the seedling claw (32) comprises a seedling claw frame (39), a seedling claw piece (40), a seedling claw opening and closing horseshoe (45), a cross support arm (42) and a triangular support arm (43), the seedling claw frame (39) is fixedly connected to the seedling throwing shaft (33), the seedling claw frame (39) is fixedly connected with the seedling claw piece (40) through a rivet, one end of the cross support arm (42) is hinged with the seedling claw opening and closing horseshoe (45), the other end of the cross support arm is hinged with the triangular support arm (43), the seedling claw opening and closing horseshoe (45) is hinged to a horseshoe shaft (46) fixed on the seedling claw frame (39), the seedling claw piece (40) is made of spring steel, two seedling claw pieces (40) are arranged, a triangular support arm frame (44) is arranged on each seedling claw piece (40), a triangular support arm (43) is hinged with the triangular support arm frame (44), a seedling claw opening and closing horseshoe (45) is also provided with a seedling claw closing support arm (41), and the seedling claw closing support arm (41) is fixedly connected to the seedling claw opening and closing horseshoe (45); the seedling claw piece (40) is provided with a rubber sleeve, the outer side of the seedling claw (32) is also provided with a windproof cylinder (60), and the windproof cylinder (60) is also fixedly connected with a horseshoe stop block (61) and a seedling claw opening support arm (63).

5. The rice seedling throwing machine for planting according to any one of claims 1 to 4, wherein the seedling separating mechanism comprises a seedling separating partition plate bracket (47), a seedling separating partition plate (48) and a seedling blocking partition plate (49), the seedling separating partition plate bracket (47) is fixedly connected to the conveyor belt bracket (5), the seedling separating partition plate (48) is fixedly connected to the seedling separating partition plate bracket (47), the seedling separating partition plate (48) is fixedly connected to the seedling tray cover (58), and the seedling blocking partition plate (49) is fixedly connected to the seedling separating partition plate bracket (47).