CN118402364B - Semi-automatic tomato bare seedling transplanter and transplanting method thereof - Google Patents

Abstract

The present invention discloses a semi-automatic tomato bare seedling transplanter and a transplanting method thereof. In the present invention, two seedling delivery devices are arranged on the frame, a seedling planting device is arranged directly below each seedling delivery device, and a soil covering device is arranged directly behind the two seedling planting devices; the receiving plate in the seedling planting device is hinged to the frame through an upper rocker and a lower rocker arranged in parallel, and the middle part of the lower rocker is hinged to the eccentric position of an eccentric wheel hinged to the frame through a folding pull rod, and the outer sides of the two symmetrically arranged planters are both hinged to the receiving plate, and the inner sides are both fixed with transmission pins, and the two transmission pins respectively pass through two arc notches arranged in an eight-shaped shape on the receiving plate, and are both inserted into the rectangular grooves on the slide rods that form a sliding pair with the receiving plate. The present invention can replace manual labor to realize the transplanting of tomato bare seedlings, reduce manual labor, improve transplanting efficiency, and solve the problem of high production cost due to the need to equip a corresponding tomato pot seedling transplanter when using tomato pot seedlings.

Description

Semi-automatic tomato bare seedling transplanter and transplanting method thereof

Technical Field

The invention belongs to the field of agricultural machinery, and in particular relates to a semi-automatic tomato bare seedling transplanter and a transplanting method thereof.

Background Art

As one of the most important vegetables widely grown and consumed worldwide, the development of tomato planting technology is of great significance to ensuring food safety and increasing agricultural output value. Traditional artificial seedling raising and transplanting methods are difficult to meet the needs of modern large-scale agricultural production due to their high labor intensity and low efficiency.

At present, tomato planting basically adopts the seedling transplanting method, and the tomato transplanter used is mainly the tomato seedling transplanter. Tomato seedlings are usually cultivated by hole tray seedling cultivation, which has the advantages of standardized production, high germination and fast seedling growth, increased production and efficiency. However, farmers need to buy seedling trays and substrates, and the corresponding seedling transplanter is relatively expensive. For small and medium-sized tomato growers, the production links of the seedling transplanting mode are more and the investment cost is higher. The tomato seedling transplanter corresponding to this seedling method is also difficult to apply and promote among small and medium-sized vegetable growers. In comparison, tomato naked seedlings are cultivated by traditional broadcast seedling cultivation, without seedling trays and substrates and additional seedling infrastructure. In addition, the seedling cultivation method is mature, the seedling management is simple, and it has better economic benefits. However, there are few inventions about tomato naked seedling transplanting machinery. The transplanting of tomato naked seedlings is mainly done manually, with large labor force and low transplanting efficiency.

Summary of the invention

The purpose of the invention is to overcome the deficiencies of the prior art and to provide a semi-automatic tomato bare seedling transplanter and a transplanting method thereof.

To achieve the above object, the present invention adopts the following technical solutions:

The invention discloses a semi-automatic tomato bare seedling transplanter, which comprises a seedling placing platform, a seedling conveying device, a seedling planting device and a transmission device.

A seedling platform is fixed on the frame, and two seedling delivery devices are symmetrically arranged on both sides of the seedling platform. The seedling delivery device includes a conveying frame, a chain transmission mechanism 1 and a seedling support plate assembly; the conveying frame is fixed on the frame, the chain transmission mechanism 1 is arranged in the conveying frame, and the driven sprocket shaft and the driving sprocket shaft of the chain transmission mechanism 1 are vertically arranged, and a plurality of seedling support plate assemblies arranged equidistantly are arranged on the conveying plate chain of the chain transmission mechanism 1; the seedling support plate assembly includes a seedling support bottom plate with a variable pitch angle; the cross section of the conveying side plate of the conveying frame is a semicircle, and the conveying bottom plate of the conveying frame is provided with a semicircle notch at one of the semicircle positions of the semicircle, and a seedling drop opening connected to the semicircle notch is provided on the outer side of the chain transmission mechanism 1.

A seedling planting device is provided directly below the two seedling delivery devices. The seedling planting device includes a tilting rod, a receiving plate, a sliding rod, a tension spring, an eccentric wheel, a folding and pulling rod, an upper rocking rod, a lower rocking rod and a planting device; the eccentric wheel forms a rotating pair with the frame; one end of the upper rocking rod and the lower rocking rod arranged at an upper and lower interval are both hinged to the frame, and the other end is both hinged to the vertically arranged receiving plate, and the line connecting the hinge centers at both ends of the upper rocking rod is parallel to the line connecting the hinge centers at both ends of the lower rocking rod and has the same length; one end of the folding and pulling rod is hinged to the eccentric position of the eccentric wheel, and the other end is hinged to the middle part of the lower rocking rod; the middle part of the tilting rod is hinged to one end of the receiving plate away from the upper rocking rod and the lower rocking rod; the sliding rod is provided directly below one end of the tilting rod close to the upper rocking rod and the lower rocking rod, and forms a sliding pair in the vertical direction with the receiving plate, and is connected to the receiving plate. The tension spring is connected to the receiving plate, and a rectangular groove is provided in the middle of the slide bar; a collision block is fixed to the frame just below the end of the tilting rod away from the upper rocking rod and the lower rocking rod; two arc grooves arranged in an eight-shaped shape are provided on the receiving plate; wherein the tilting rod, the slide bar, the upper rocking rod and the lower rocking rod are all located on one side of the receiving plate, and two symmetrically arranged planters are provided on the other side of the receiving plate, and transmission pins perpendicular to the receiving plate are fixed on the inner sides of the two planters, and the outer sides are hinged to the receiving plate; when the two planters are closed, they enclose a seedling storage cavity; the transmission pins of the two planters pass through the two arc grooves and are both inserted into the rectangular groove; the diameter of the transmission pin is smaller than the height of the rectangular groove, and the sum of the diameters of the two transmission pins is smaller than the length of the rectangular groove.

Among them, the chain transmission mechanism of the two seedling delivering devices and the eccentric wheels of the two seedling planting devices are driven by a transmission device arranged on the frame, and when the two planters of one of the seedling planting devices are in the highest position, the two planters of the seedling planting device are in a closed state, and the two planters of the other seedling planting device are in the lowest position and in an open state.

Preferably, a straight slot connected to the semicircular notch is provided on the conveying bottom plate, and a chain transmission mechanism is arranged at the position of the straight slot, including a conveying plate chain, a driven sprocket shaft, a driven sprocket, a driving sprocket and a driving sprocket shaft. The driven sprocket shaft and the driving sprocket shaft both form a rotating pair with the frame, and the driven sprocket and the driving sprocket are respectively fixed to the driven sprocket shaft and the driving sprocket shaft, and are connected by the conveying plate chain.

Preferably, the three sides of the lower surface of the conveying bottom plate located at the seedling drop outlet except one side close to the semicircular notch are fixed with vertically arranged extension plates, and the bottom end of the conveying side plate is located at the other semicircular position of the circle and has an opening.

More preferably, the seedling supporting plate assembly includes an inner connecting plate, a seedling supporting side plate and a seedling supporting bottom plate. The vertically arranged inner connecting plate is tangent to the conveying plate chain and is fixed to the conveying plate chain, and a connecting shaft horizontally and perpendicular to the inner connecting plate is fixed to the inner connecting plate. The upper ends of the seedling supporting side plates and the connecting shaft form a rotating pair, and the lower ends are hinged to the seedling supporting bottom plate; the seedling supporting side plates and the seedling supporting bottom plate in the seedling supporting plate assembly located at the semicircular notch pass through the semicircular notch and are in a vertical state under the action of their own gravity, and the lower surface of the seedling supporting bottom plate in the seedling supporting plate assembly located on the conveying bottom plate is in contact with the upper surface of the conveying bottom plate.

Preferably, an integrally formed semicircular push block is provided at one end of the tilting rod close to the upper rocking rod and the lower rocking rod.

More preferably, a soil covering device is provided on the frame directly behind the two seedling planting devices; the soil covering device comprises a soil covering wheel frame, a square tube, a soil covering wheel connecting plate and a soil covering wheel, the two ends of the horizontally arranged square tube are fixed to the frame by two soil covering wheel frames, a pair of soil covering wheel connecting plates are provided on the square tube behind the two collision blocks, a plurality of pairs of holes arranged equidistantly are opened on the square tube, each soil covering wheel connecting plate is fixed to a pair of holes by a bolt and a nut; the two soil covering wheel connecting plates in each pair of soil covering wheel connecting plates are symmetrically and relatively inclined, and a soil covering wheel is hinged on each soil covering wheel connecting plate.

Preferably, seats are fixed on the frame at the outer sides of the two seedling delivery devices, and a traction device is provided at the front end of the frame; the traction device includes a traction hook and a traction connecting block, and the traction hook is fixed to the frame through the traction connecting block.

Preferably, ground wheel devices are provided at the four corners of the frame; the ground wheel device comprises a ground wheel and a ground wheel axle frame, the ground wheel axle frame is fixed on the frame, and the ground wheel is hinged on the ground wheel axle frame.

Preferably, the transmission device includes a bevel gear pair 1, a three-phase asynchronous motor, a chain transmission mechanism 2, a reduction box, a bevel gear shaft, a bevel gear pair 2, a chain transmission mechanism 3 and an eccentric wheel shaft. The shells of the three-phase asynchronous motor and the reduction box are fixed on the frame, the output shaft of the three-phase asynchronous motor is fixed to the input end of the reduction box, the output shaft of the reduction box is connected to the bevel gear shaft through the chain transmission mechanism 2, the bevel gear shaft is connected to the eccentric wheel shaft through the chain transmission mechanism 3, the bevel gear shaft and the eccentric wheel shaft are parallel and horizontally arranged, and both form a rotating pair with the frame; the eccentric wheels of the two seedling planting devices are fixed to the two ends of the eccentric wheel shaft, and the driving sprocket shafts of the two chain transmission mechanisms 1 are respectively connected to the two ends of the bevel gear shaft through the bevel gear pair 1 and the bevel gear pair 2; wherein the three-phase asynchronous motor is controlled by a controller.

The present invention provides a transplanting method of a semi-automatic tomato bare seedling transplanter, which is specifically as follows:

First, the traction device is connected to the tractor, and naked tomato seedlings are placed on the seedling platform, and two seedling placing personnel sit on two seats; then the driver starts the tractor, and the tractor drives the frame forward through the traction device, and at the same time the transmission device drives the two chain transmission mechanisms to work and drives the two eccentric wheels to rotate.

When the transmission device drives the two chain transmission mechanisms to work, the two chain transmission mechanisms drive the corresponding seedling supporting plate assemblies to move in a circular motion from the semicircular notch position to the opening position, from the opening position to the seedling dropping position, and then from the seedling dropping position to the semicircular notch position. When a seedling supporting plate assembly located at the semicircular notch position moves toward the opening position, the corresponding conveying bottom plate contacts the seedling supporting side plate of the seedling supporting plate assembly and pushes the seedling supporting side plate to rotate upward, and with the movement of the corresponding chain transmission mechanism, the seedling supporting bottom plate of the seedling supporting plate assembly is dragged to the conveying bottom plate by the seedling supporting side plate and fits with the conveying bottom plate; when the seedling supporting plate assembly moves to the opening position, the chain transmission mechanism drives the seedling supporting plate assembly to turn around, and the inner connecting plate of the seedling supporting plate assembly deflects outward to maintain a posture tangent to the conveying plate chain, and The seedling supporting side plates and the seedling supporting bottom plate are driven to deflect outward through the corresponding connecting shafts, so that the outer end of the seedling supporting bottom plate that is in contact with the conveying bottom plate passes through the opening, and after the chain transmission mechanism drives the seedling supporting plate assembly to complete the turn, the inner connecting plate drives the outer end of the seedling supporting bottom plate to retract into the conveying frame through the connecting shaft and the seedling supporting side plates; when the seedling supporting plate assembly moves to the seedling dropping mouth position, the seedling supporting bottom plate of the seedling supporting plate assembly is separated from the conveying bottom plate, and the seedling supporting bottom plate and the corresponding seedling supporting side plates rotate downward to a vertical state under the action of their own gravity, and then the seedling supporting plate assembly enters the semicircular notch position.

When each chain transmission mechanism is working, when one of the seedling supporting plate assemblies moves to the corresponding conveying bottom plate, this seedling supporting plate assembly and the seedling supporting side plate and conveying side plate of the next seedling supporting plate assembly form a semi-enclosed area, and the seedling placing personnel put a naked tomato seedling in the semi-enclosed area; as each chain transmission mechanism continues to work, two seedling placing personnel put a naked tomato seedling in each semi-enclosed area of the two seedling conveying devices, and each chain transmission mechanism drives each naked tomato seedling to be transported to the seedling drop port through each seedling supporting plate assembly. Among them, each chain transmission mechanism drives the corresponding seedling supporting plate assembly to move to the seedling drop port at a speed that is the same as the forward speed of the frame, but in the opposite direction.

When the transmission device drives the two eccentric wheels to rotate, the two eccentric wheels drive the two lower rockers to swing back and forth alternately, and the lower rockers drive the upper rockers to swing back and forth synchronously through the connecting plate; because the connecting line of the hinge centers at both ends of the upper rocker in each seedling planting device is parallel to the connecting line of the hinge centers at both ends of the lower rocker and the length is equal, the upper rocker, the lower rocker, the connecting plate and the frame form a parallelogram mechanism, so that the connecting plate maintains a vertical state and moves back and forth.

During the staggered up and down reciprocating swinging of the receiving plates of the two seedling planting devices, when the receiving plate in one of the seedling planting devices drives the corresponding two planters to move to the highest position, the two planters are in a closed state, and the seedling storage cavity formed by the closing of the grooves of the two planters is located directly below the seedling dropping port of the corresponding seedling delivery device, and a bare tomato seedling is carried to the seedling dropping port by a seedling supporting plate assembly of the seedling delivery device, and falls from the seedling dropping port into the seedling storage cavity. As the eccentric wheel rotates, the eccentric wheel drives the receiving plate, the two closed planters and a bare tomato seedling to move downward through the lower rocker. As the receiving plate moves downward, the tilting rod moves away from the upper rocker The two ends of the upper and lower rockers touch the collision block. At this time, the tips of the two closed planters are inserted into the soil, and as the receiving plate continues to move downward, the tilting rod is close to one end of the upper and lower rockers and rotates downward, contacts the sliding rod, and pushes the sliding rod to slide downward. The tension spring is stretched, and after the sliding rod moves down a certain distance, the upper surface of the rectangular groove on the sliding rod contacts the two transmission pins and pushes the two transmission pins to move downward along the two circular arc grooves. At the same time, the two transmission pins also slide horizontally and back to back along the rectangular groove, thereby driving the two planters to move back to back and dig a soil pit. When the receiving plate moves to the lowest position, the two planters are fully opened, and a plant is The naked tomato seedlings fall into a soil pit, thus completing the transplanting of a naked tomato seedling. At the same time, the two planters in another seedling planting device move to the highest position and receive another naked tomato seedling transported by a seedling supporting plate assembly of another seedling delivery device; then the eccentric wheel of the seedling planting device at the highest position drives the receiving plate and the two planters receiving the naked tomato seedlings to move downward through the corresponding lower rocker to transplant the naked tomato seedlings. At the same time, the eccentric wheel in the seedling planting device that completes the transplanting of the naked tomato seedlings drives the receiving plate and the two opened planters to move upward through the corresponding lower rocker, and the restoring force of the tension spring acts as a The slide bar is driven to move upward. After the slide bar moves up a certain distance, the lower surface of the rectangular groove on the slide bar contacts the two transmission pins and pushes the two transmission pins to move upward along the two arc grooves. At the same time, the two transmission pins also slide horizontally and toward each other along the rectangular groove, thereby driving the two planters to move toward each other, so that the two planters are closed, and the end of the tilting rod close to the upper rocker and the lower rocker is pushed to rotate upward, so that the tilting rod rotates to the original position. With the rotation of the eccentric wheel, the lower rocker drives the receiving plate and the two closed planters to move upward toward the seedling drop port of the corresponding seedling delivery device, ready to receive the next tomato seedling transported by the corresponding seedling delivery device. Among them, when the tomato seedlings fall from the seedling drop port, each extension plate and the corresponding seedling support bottom plate correct the falling posture of the tomato seedlings, so that the tomato seedlings fall into the seedling storage cavity in a vertical state.

With the advancement of the frame, the staggered transportation of the two seedling delivery devices and the staggered transplanting of the two seedling planting devices, the bare tomato seedlings are transplanted alternately in the corresponding soil pits, thereby completing the transplanting of each bare tomato seedling, and with the advancement of the frame, the frame drives the soil covering device to move forward, and the two pairs of soil covering wheels in the soil covering device cover the bare tomato seedlings transplanted by the corresponding seedling planting devices with soil, thereby completing the soil covering work of each bare tomato seedling, thereby completing the transplanting of each bare tomato seedling.

The present invention has the following beneficial effects:

1. The present invention can replace manual labor to transplant naked tomato seedlings, reduce manual labor, improve transplanting efficiency, and solve the problem of high production cost caused by the need to equip corresponding tomato seedling pot transplanters when using tomato seedlings in pots. Specifically, the present invention is driven forward by a tractor towing the frame, and manually places a naked tomato seedling in each semi-enclosed area of the two seedling delivery devices, so that the two seedling delivery devices transport each naked tomato seedling to the corresponding seedling drop outlet, thereby realizing the transportation of the naked tomato seedlings; further, the present invention drives the eccentric wheels of the two seedling planting devices to rotate through a transmission device, so that the two eccentric wheels drive the two receiving plates to move back and forth alternately up and down through the two lower rockers, thereby driving the two pairs of planters to move back and forth alternately up and down, and during the process of the two pairs of planters moving back and forth alternately up and down, when one of the pairs of planters moves to the highest position, it is in a closed state, and receives a naked tomato seedling transported to the seedling drop outlet by a corresponding seedling delivery device. At the same time, another pair of planters carries another tomato seedling and moves to the lowest position, which is in an open state. A pit is dug to allow the tomato seedling to fall into the pit to realize the transplantation. Then, the pair of planters at the highest position carries a tomato seedling and moves downward, ready for transplantation. At the same time, the other pair of planters moves up and closes, ready to receive the next tomato seedling transported by the corresponding seedling delivery device. With the slow advancement of the frame and the staggered delivery of the two seedling delivery devices, the two seedling planting devices transplant the tomato seedlings alternately, and the two pairs of soil covering wheels located behind the two seedling planting devices cover the corresponding tomato seedlings with soil, thereby realizing the transplantation of each tomato seedling.

2. In the present invention, after each pair of planters moves down and is inserted into the soil, the corresponding tilting rod pushes the slide bar to move downward, the tension spring is stretched, and the slide bar drives the two transmission pins to move downward along the two arc notches through the rectangular groove, and the two transmission pins drive the two planters to move away from each other, thereby realizing the opening of the two planters. When each pair of planters moves up, the tension spring pulls the slide bar to move upward, and the slide bar drives the two transmission pins to move upward along the two arc notches through the rectangular groove, thereby driving the two planters to move toward each other, thereby realizing the closing of the two planters. Furthermore, in the present invention, the height of the rectangular groove is greater than the diameter of the transmission pin. When the rectangular groove moves downward, it contacts the two transmission pins after moving downward for a certain distance, and then the corresponding pair of planters open only after being buried in the soil to a certain depth, so that the tomato seedlings can fall into the pit of sufficient depth, thereby improving the survival rate of the tomato seedlings. When the rectangular groove moves upward, it contacts the two transmission pins after moving upward for a certain distance, and then the corresponding pair of planters start to close only after rising for a certain distance, so that the planters always remain in an open state before completely leaving the tomato seedlings, preventing the tomato seedlings from being pinched, reducing the damage rate of the tomato seedlings, and further improving the survival rate of the tomato seedlings.

3. In the present invention, the chain transmission mechanism drives each seedling supporting plate assembly to move toward the seedling dropping port at a speed that is the same as the forward speed of the frame but in the opposite direction, so that the horizontal speed of the naked tomato seedlings when falling is smaller, thereby improving the uprightness of the naked tomato seedlings after falling into the seedling storage cavity; further, during the falling of the naked tomato seedlings, the extension plate and the corresponding seedling supporting bottom plate correct the falling posture of the naked tomato seedlings, so that the naked tomato seedlings fall into the seedling storage cavity in a vertical state, thereby further improving the uprightness of the naked tomato seedlings when falling into the seedling storage cavity.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a front view of FIG. 1 .

FIG. 3 is a side view of FIG. 1 .

FIG. 4 is a second schematic diagram of the overall structure of the present invention.

FIG. 5 is a schematic structural diagram of the seedling delivery device of the present invention.

FIG. 6 is a schematic structural diagram of the seedling supporting plate assembly of the present invention.

FIG. 7 is a schematic diagram of the structure of the conveying frame in the present invention.

FIG8 is a schematic structural diagram of the eccentric wheel shaft and two seedling planting devices in the present invention.

9 is a schematic diagram of the structure of the tilting rod, the receiving plate, the sliding rod, the tension spring, the planting device, part of the upper rocker and part of the lower rocker in the present invention.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG1 , the present invention is a semi-automatic tomato bare seedling transplanter, comprising a seedling placing platform 1, a seedling delivery device 2, a traction device 3, a seat 4, a frame 5, a seedling planting device 6, a soil covering device 7, a ground wheel device 8 and a transmission device 9.

A seedling platform 1 is fixed on the frame 5, and two seedling delivery devices 2 are symmetrically arranged on both sides of the seedling platform 1. As shown in Figures 5, 6 and 7, the seedling delivery device 2 includes a conveying frame 2-1, a chain transmission mechanism 1 and a seedling support plate assembly 2-7; the conveying frame 2-1 is fixed on the frame 5, the chain transmission mechanism 1 is arranged in the conveying frame 2-1, and the driven sprocket shaft 2-3 and the driving sprocket shaft 2-6 of the chain transmission mechanism 1 are vertically arranged, and a plurality of seedling support plate assemblies 2-7 arranged equidistantly are arranged on the conveying plate chain 2-2 of the chain transmission mechanism 1; the seedling support plate assembly 2-7 includes an inner connecting plate 2-7a, a seedling support plate assembly 2-7b, and a seedling support plate assembly 2-7c. The side plate 2-7d and the seedling supporting bottom plate 2-7b, the vertically arranged inner connecting plate 2-7a is tangent to the conveying plate chain 2-2 and is fixed to the conveying plate chain 2-2, and a connecting shaft horizontally and perpendicular to the inner connecting plate 2-7a is fixed on the inner connecting plate 2-7a, the upper end of the seedling supporting side plate 2-7d and the connecting shaft form a rotating pair, and the lower end is hinged to the seedling supporting bottom plate 2-7b; wherein the cross section of the conveying side plate of the conveying frame 2-1 is a circle (the circle consists of a rectangle and the two ends of the rectangle The conveying bottom plate 2-1a of the conveying frame 2-1 is provided with a semicircular notch at one of the semicircular positions of the one circle, and a rectangular opening 2-1b connected to the semicircular notch is provided on the outer side of the chain transmission mechanism 1, and the rectangular opening 2-1b is a seedling drop opening, and the lower surface of the conveying bottom plate 2-1a is located on the seedling drop opening, and three sides except one side close to the semicircular notch are fixed with vertically arranged extension plates 2-1c, and the bottom end of the conveying side plate is located at the other semicircular position of the one circle. An opening 2-1d is provided at the circular position, and the opening 2-1d is used to prevent the seedling supporting bottom plate 2-7b from interfering with the conveying side plate when it moves to the turning position of the conveying side plate; the seedling supporting side plate 2-7d and the seedling supporting bottom plate 2-7b in the seedling supporting plate assembly 2-7 located at the semicircular notch pass through the semicircular notch and are in a vertical state under the action of their own gravity, and the lower surface of the seedling supporting bottom plate 2-7b in the seedling supporting plate assembly 2-7 located on the conveying bottom plate 2-1a is in contact with the upper surface of the conveying bottom plate 2-1a.

A seedling planting device 6 is provided directly below the two seedling delivery devices 2. As shown in Fig. 1, Fig. 8 and Fig. 9, the seedling planting device 6 comprises a tilting rod 6-1, a receiving plate 6-2, a sliding rod 6-3, a tension spring 6-4, an eccentric wheel 6-5, a folding pull rod 6-6, an upper rocker 6-7, a lower rocker 6-9, a planter 6-10 and a collision block 6-11; the eccentric wheel 6-5 and the frame 5 form a rotating pair; one end of the upper rocker 6-7 and the lower rocker 6-9 arranged at a vertical interval are both hinged to the frame 5, and the other end is hinged to the receiving plate 6-2 arranged vertically, and The connecting line of the hinge centers at both ends of the upper rocker 6-7 is parallel to the connecting line of the hinge centers at both ends of the lower rocker 6-9 and has the same length; one end of the folding and pulling rod 6-6 is hinged to the eccentric position of the eccentric wheel 6-5, and the other end is hinged to the middle of the lower rocker 6-9; the middle of the tilting rod 6-1 is hinged to one end of the receiving plate 6-2 away from the upper rocker 6-7 and the lower rocker 6-9; the sliding rod 6-3 is arranged just below one end of the tilting rod 6-1 close to the upper rocker 6-7 and the lower rocker 6-9, and is hinged to the receiving plate 6- 2 constitutes a sliding pair in the vertical direction, and is connected to the receiving plate 6-2 through a tension spring 6-4, and a rectangular groove is provided in the middle of the slide bar 6-3; the collision block 6-11 is arranged just below the end of the tilting rod 6-1 away from the upper rocking rod 6-7 and the lower rocking rod 6-9, and is fixed to the frame 5; the receiving plate 6-2 is provided with two arc notches arranged in an eight-shaped shape; wherein the tilting rod 6-1, the slide bar 6-3, the upper rocking rod 6-7 and the lower rocking rod 6-9 are all located on one side of the receiving plate 6-2, Two symmetrically arranged planters 6-10 are provided on the other side of the receiving plate 6-2, and transmission pins perpendicular to the receiving plate 6-2 are fixed on the inner sides of the two planters 6-10, and the outer sides are hinged to the receiving plate 6-2; when the two planters 6-10 are closed, they enclose a seedling storage cavity; the transmission pins of the two planters 6-10 pass through two circular arc notches and are both inserted into the rectangular groove; the diameter of the transmission pin is smaller than the height of the rectangular groove, and the sum of the diameters of the two transmission pins is smaller than the length of the rectangular groove.

Seats 4 are fixed on the frame 5 at the outer sides of the two seedling delivery devices 2, and a soil covering device 7 is provided directly behind the two seedling planting devices 6; the traction device 3 is provided at the front end of the frame 5 for connecting with the tractor; the four corners of the frame 5 are provided with ground wheel devices 8; wherein, the chain transmission mechanism 1 of the two seedling delivery devices 2 and the eccentric wheels 6-5 of the two seedling planting devices 6 are driven by the transmission device 9 provided on the frame 5, and when the two planters 6-10 of one of the seedling planting devices 6 are in the highest position, the two planters 6-10 of the seedling planting device 6 are in a closed state, and the two planters 6-10 of the other seedling planting device 6 are in the lowest position and in an open state.

As a preferred embodiment, a straight slot communicating with the semicircular notch is provided on the conveying bottom plate 2-1a, and a chain transmission mechanism is arranged at the position of the straight slot, including a conveying plate chain 2-2, a driven sprocket shaft 2-3, a driven sprocket 2-4, a driving sprocket 2-5 and a driving sprocket shaft 2-6. The driven sprocket shaft 2-3 and the driving sprocket shaft 2-6 both form a rotating pair with the frame 5, and the driven sprocket 2-4 and the driving sprocket 2-5 are respectively fixed to the driven sprocket shaft 2-3 and the driving sprocket shaft 2-6, and are connected through the conveying plate chain 2-2.

As a preferred embodiment, the seedling supporting side panel 2-7d is hinged to the seedling supporting bottom panel 2-7b by a hinge 2-7c.

As a preferred embodiment, an integrally formed semicircular push block is provided at one end of the tilting rod 6-1 close to the upper rocking rod 6-7 and the lower rocking rod 6-9, and the semicircular push block is used to reduce the friction between the tilting rod 6-1 and the sliding rod 6-3.

As a preferred embodiment, the upper rocker 6-7 and the lower rocker 6-9 are hinged to two rocker connectors 6-8 fixed on the frame 5 respectively.

As a preferred embodiment, both sides of the seedling placing platform 1 close to the two seedling delivering devices 2 are tilted downward to facilitate the seedling placing personnel to take the seedlings.

As a preferred embodiment, as shown in Figure 2, the covering device 7 includes a covering wheel frame 7-1, a square tube 7-2, a covering wheel connecting plate 7-3 and a covering wheel 7-4. The two ends of the horizontally arranged square tube 7-2 are fixed to the frame 5 through two covering wheel frames 7-1. A pair of covering wheel connecting plates 7-3 are detachably fixed on the square tube 7-2 behind the two collision blocks 6-11. The two covering wheel connecting plates 7-3 in each pair of covering wheel connecting plates 7-3 are symmetrical and relatively inclined, and a covering wheel 7-4 is hinged on each covering wheel connecting plate 7-3.

More preferably, the square tube 7-2 is provided with a plurality of pairs of holes arranged at equal intervals, each covering wheel connecting plate 7-3 is fixed to a pair of holes by a bolt and a nut, and the spacing between the corresponding pair of covering wheels 7-4 can be adjusted by adjusting the fixing position of each pair of covering wheel connecting plates 7-3.

As a preferred embodiment, as shown in FIG. 3 , the traction device 3 includes a traction hook 3 - 1 and a traction connection block 3 - 2 , and the traction hook 3 - 1 is fixed to the frame 5 through the traction connection block 3 - 2 .

As a preferred embodiment, the ground wheel device 8 includes a ground wheel 8-1 and a ground wheel shaft frame 8-2, the ground wheel shaft frame 8-2 is fixed on the frame 5, and the ground wheel 8-1 is hinged on the ground wheel shaft frame 8-2.

As a preferred embodiment, as shown in FIG4, the transmission device 9 includes a bevel gear pair 1 9-1, a three-phase asynchronous motor 9-2, a chain transmission mechanism 2 9-3, a reduction box 9-4, a bevel gear shaft 9-5, a bevel gear pair 2 9-8, a chain transmission mechanism 3 9-6 and an eccentric wheel shaft 9-7. The housings of the three-phase asynchronous motor 9-2 and the reduction box 9-4 are fixed to the frame 5, the output shaft of the three-phase asynchronous motor 9-2 is fixed to the input end of the reduction box 9-4, and the output shaft of the reduction box 9-4 is connected to the bevel gear pair 1 9-1 through the chain transmission mechanism 2 9-3. The gear shaft 9-5 is connected, the bevel gear shaft 9-5 is connected to the eccentric wheel shaft 9-7 through the chain transmission mechanism three 9-6, the bevel gear shaft 9-5 and the eccentric wheel shaft 9-7 are parallel and horizontally arranged, and both form a rotating pair with the frame 5; the eccentric wheels 6-5 of the two seedling planting devices 6 are fixed to the two ends of the eccentric wheel shaft 9-7, and the active sprocket shaft 2-6 of the two chain transmission mechanisms one are respectively connected to the two ends of the bevel gear shaft 9-5 through the bevel gear pair one 9-1 and the bevel gear pair two 9-8; wherein, the three-phase asynchronous motor 9-2 is controlled by the controller.

The present invention provides a transplanting method of a semi-automatic tomato bare seedling transplanter, which is specifically as follows:

First, the traction device 3 is connected to the tractor, and the naked tomato seedlings are placed on the seedling platform 1, and two seedling placing personnel sit on two seats 4; then the driver starts the tractor, and the tractor drives the frame 5 and the wheel devices 8 forward through the traction device 3, and at the same time, the transmission device 9 drives the two chain transmission mechanisms to work and drives the two eccentric wheels 6-5 to rotate.

When the transmission device 9 drives the two chain transmission mechanisms to work, the two chain transmission mechanisms drive the corresponding seedling supporting plate assemblies 2-7 to move in a circular motion from the semicircular notch position to the opening 2-1d position, from the opening 2-1d position to the seedling falling position, and then from the seedling falling position to the semicircular notch position. Among them, when a seedling supporting plate assembly 2-7 located at the position of the semicircular notch moves toward the opening 2-1d position, the corresponding conveying bottom plate 2-1a contacts the seedling supporting side plate 2-7d of the seedling supporting plate assembly 2-7 and pushes it to rotate upward, and with the movement of the corresponding chain transmission mechanism 1, the seedling supporting bottom plate 2-7b of the seedling supporting plate assembly 2-7 is dragged to the conveying bottom plate 2-1a by the seedling supporting side plate 2-7d and fits with the conveying bottom plate 2-1a; when the seedling supporting plate assembly 2-7 moves to the opening 2-1d position, the chain transmission mechanism 1 drives the seedling supporting plate assembly 2-7 to turn around, and the inner connecting plate 2-7a of the seedling supporting plate assembly 2-7 deflects outward, maintaining a posture tangent to the conveying plate chain 2-2, and drives the seedling supporting side plate 2-7d and the seedling supporting bottom plate through the corresponding connecting shaft. 2-7b deflects outward, so that the outer end of the seedling supporting bottom plate 2-7b that is in contact with the conveying bottom plate 2-1a passes through the opening 2-1d, preventing the seedling supporting bottom plate 2-7b from interfering with the conveying side plate when the seedling supporting plate assembly 2-7 turns and turns around. After the chain transmission mechanism drives the seedling supporting plate assembly 2-7 to complete the turn, the inner connecting plate 2-7a drives the outer end of the seedling supporting bottom plate 2-7b to retract into the conveying frame 2-1 through the connecting shaft and the seedling supporting side plate 2-7d; when the seedling supporting plate assembly 2-7 moves to the seedling dropping mouth position, the seedling supporting bottom plate 2-7b of the seedling supporting plate assembly 2-7 is separated from the conveying bottom plate 2-1a, and the seedling supporting bottom plate 2-7b and the corresponding seedling supporting side plate 2-7d rotate downward to a vertical state under the action of their own gravity, and then the seedling supporting plate assembly 2-7 enters the semicircular notch position.

When each chain transmission mechanism is working, when one of the seedling supporting plate assemblies 2-7 moves to the corresponding conveying bottom plate 2-1a, this seedling supporting plate assembly 2-7 and the seedling supporting side plate 2-7d of the next seedling supporting plate assembly 2-7 and the conveying side plate form a semi-closed area, and the seedling planting personnel put a naked tomato seedling in the semi-closed area; as each chain transmission mechanism continues to work, two seedling planting personnel put a naked tomato seedling in each semi-closed area of the two seedling delivery devices 2, and each chain transmission mechanism drives each naked tomato seedling to be transported to the seedling drop port through each seedling supporting plate assembly 2-7.

When the transmission device 9 drives the two eccentric wheels 6-5 to rotate, the two eccentric wheels 6-5 drive the two lower rockers 6-9 to swing back and forth alternately, and the lower rockers 6-9 drive the upper rockers 6-7 to swing back and forth synchronously through the receiving plate 6-2; because the connecting line of the hinge centers at both ends of the upper rocker 6-7 in each seedling planting device 6 is parallel to the connecting line of the hinge centers at both ends of the lower rocker 6-9 and has the same length, the upper rocker 6-7, the lower rocker 6-9, the receiving plate 6-2 and the frame 5 form a parallelogram mechanism, so that the receiving plate 6-2 maintains a vertical state and moves back and forth.

During the staggered up and down reciprocating swinging of the receiving plates 6-2 of the two seedling planting devices 6, when the receiving plate 6-2 in one of the seedling planting devices 6 drives the corresponding two planters 6-10 to move to the highest position, the two planters 6-10 are in a closed state, and the seedling storage cavity formed by the closure of the two planters 6-10 is located directly below the seedling dropping port of the corresponding seedling delivery device 2, and a tomato seedling is carried to the seedling dropping port by a seedling supporting plate assembly 2-7 of the seedling delivery device 2, and falls from the seedling dropping port into the seedling storage cavity. With the rotation of the eccentric wheel 6-5, the eccentric wheel 6-5 drives the receiving plate 6-2, the two closed planters 6-10 and a tomato seedling to move downward through the lower rocker 6-9. With the downward movement of the receiving plate 6-2, the tilting rod 6-1 moves away from the upper rocker 6-7 and the lower rocker 6-9. One end of the rocker 6-9 contacts the collision block 6-11, at which time the tips of the two closed planters 6-10 are inserted into the soil, and as the receiving plate 6-2 continues to move downward, the end of the tilting rod 6-1 close to the upper rocker 6-7 and the lower rocker 6-9 rotates downward, contacts the slide bar 6-3, and pushes the slide bar 6-3 to slide downward, the tension spring 6-4 is stretched, and after the slide bar 6-3 moves down a distance (the difference between the height of the rectangular groove and the diameter of the transmission pin), the upper surface of the rectangular groove on the slide bar 6-3 contacts the two transmission pins and pushes the two transmission pins to move downward along the two circular arc grooves. At the same time, the two transmission pins also slide horizontally and back to back along the rectangular groove, thereby driving the two planters 6-10 to move back to back and dig a pit. When the receiving plate 6-2 moves to the lowest position, the two The planter 6-10 is fully opened, and a naked tomato seedling falls into a soil pit, thereby completing the transplanting of a naked tomato seedling. At the same time, the two planters 6-10 in another seedling planting device 6 move to the highest position and receive another naked tomato seedling transported by a seedling supporting plate assembly 2-7 of another seedling delivery device 2; then the eccentric wheel 6-5 of the seedling planting device 6 at the highest position drives the receiving plate 6-2 and the two planters 6-10 receiving the naked tomato seedlings to move downward through the corresponding lower rocker 6-9 to transplant the naked tomato seedlings. At the same time, the eccentric wheel 6-5 in the seedling planting device 6 that completes the transplanting of the naked tomato seedlings drives the receiving plate 6-2 and the two opened planters 6-10 to move upward through the corresponding lower rocker 6-9, and the tension spring 6-4 The restoring force drives the slide bar 6-3 to move upward. After the slide bar 6-3 moves up a certain distance, the lower surface of the rectangular groove on the slide bar 6-3 contacts the two transmission pins and pushes the two transmission pins to move upward along the two arc grooves. At the same time, the two transmission pins also slide horizontally and toward each other along the rectangular groove, thereby driving the two planters 6-10 to move toward each other, so that the two planters 6-10 are closed, and push the end of the tilting rod 6-1 close to the upper rocking rod 6-7 and the lower rocking rod 6-9 to rotate upward, so that the tilting rod 6-1 rotates to its original position. As the eccentric wheel 6-5 rotates, the lower rocking rod 6-9 drives the receiving plate 6-2 and the two closed planters 6-10 to move upward toward the seedling drop port of the corresponding seedling delivery device 2, ready to receive the next tomato seedling transported by the corresponding seedling delivery device 2. Among them, when the naked tomato seedlings fall from the seedling drop mouth, each extension plate 2-1c and the corresponding seedling supporting bottom plate 2-7b correct the falling posture of the naked tomato seedlings, so that the naked tomato seedlings fall into the seedling storage cavity in a vertical state, and each chain transmission mechanism drives the corresponding seedling supporting plate assembly 2-7 to move toward the seedling drop mouth at a speed that is the same as the forward speed of the frame 5 and in the opposite direction, so that the horizontal speed of the naked tomato seedlings when falling is relatively small, further improving the uprightness of the naked tomato seedlings after falling into the seedling storage cavity.

With the advancement of the frame 5, the staggered transportation of the two seedling delivery devices 2 and the staggered transplantation of the two seedling planting devices 6, the tomato bare seedlings are staggered and transplanted in the corresponding soil pits, thereby completing the transplantation of each tomato bare seedling, and with the advancement of the frame 5, the frame 5 drives the soil covering device 7 to move forward, and the two pairs of soil covering wheels 7-4 in the soil covering device 7 cover the tomato bare seedlings transplanted by the corresponding seedling planting devices 6 with soil, thereby completing the soil covering work of each tomato bare seedling, thereby completing the transplanting work of each tomato bare seedling.

Claims (10)

1. The utility model provides a semi-automatic naked seedling transplanter of tomato, includes seedling stage, its characterized in that: the seedling planting device also comprises a seedling conveying device, a seedling planting device and a transmission device; a seedling placing table is fixed on the frame, and two seedling conveying devices which are symmetrically arranged are arranged at two sides of the seedling placing table; the seedling conveying device comprises a conveying frame, a first chain transmission mechanism and a seedling supporting plate assembly; the conveying frame is fixed on the frame, the first chain transmission mechanism is arranged in the conveying frame, the driven chain wheel shaft and the driving chain wheel shaft of the first chain transmission mechanism are vertically arranged, and a plurality of seedling supporting plate assemblies which are equidistantly arranged are arranged on a conveying plate chain of the first chain transmission mechanism; the seedling supporting plate assembly comprises a seedling supporting bottom plate with a variable pitch angle; the cross section of the conveying side plate of the conveying frame is a unitary circle, a semicircular notch is formed in one semicircular position of the conveying bottom plate of the conveying frame, and a seedling falling port communicated with the semicircular notch is formed in the outer side of the first chain transmission mechanism;

Seedling planting devices are arranged right below the two seedling conveying devices; the seedling planting device comprises a tilting rod, a receiving plate, a sliding rod, a tension spring, an eccentric wheel, a folding pull rod, an upper rocker, a lower rocker and a planting device; the eccentric wheel and the frame form a revolute pair; one end of the upper rocker and one end of the lower rocker which are arranged at intervals from top to bottom are hinged with the frame, the other end of the upper rocker is hinged with the vertically arranged bearing plate, and the connecting line of the hinging centers of the two ends of the upper rocker is parallel to the connecting line of the hinging centers of the two ends of the lower rocker, and the lengths of the connecting lines are equal; one end of the folding pull rod is hinged with the eccentric position of the eccentric wheel, and the other end of the folding pull rod is hinged with the middle part of the lower rocker; the middle part of the tilting rod is hinged with one end of the bearing plate, which is far away from the upper rocker and the lower rocker; the sliding rod is arranged right below one end of the warping rod, which is close to the upper rocker and the lower rocker, forms a sliding pair in the vertical direction with the bearing plate, is connected with the bearing plate through a tension spring, and is provided with a rectangular groove in the middle part; an impact block is fixed under one end of the frame, which is far away from the upper rocker and the lower rocker, of the tilting rod; two arc notches arranged in a splayed shape are formed in the bearing plate; wherein, the tilted rod, the slide bar, the upper rocker and the lower rocker are all positioned at one side of the bearing plate, two planting devices which are symmetrically arranged are arranged at the other side of the bearing plate, the inner sides of the two planting devices are all fixed with transmission pins which are vertical to the bearing plate, and the outer sides of the two planting devices are all hinged with the bearing plate; the two planting devices are surrounded by a storage Miao Qiang when closed; the transmission pins of the two planting devices penetrate through the two arc-shaped notch and penetrate into the rectangular groove; the diameter of the transmission pin is smaller than the height of the rectangular groove, and the sum of the diameters of the two transmission pins is smaller than the length of the rectangular groove;

The chain transmission mechanism I of the two seedling feeding devices and the eccentric wheels of the two seedling planting devices are driven by the transmission device arranged on the frame, and when two planting devices of one seedling planting device are positioned at the highest position, the two planting devices of the other seedling planting device are positioned at the lowest position and are in an open state.

2. A semiautomatic tomato bare seedling transplanting machine as claimed in claim 1, characterized in that: the conveying bottom plate is provided with a straight notch communicated with the semicircular notch, the first chain transmission mechanism is arranged at the position of the straight notch and comprises a conveying plate chain, a driven chain wheel shaft, a driven chain wheel, a driving chain wheel and a driving chain wheel shaft, the driven chain wheel shaft and the driving chain wheel shaft form a revolute pair with the frame, and the driven chain wheel and the driving chain wheel are respectively fixed on the driven chain wheel shaft and the driving chain wheel shaft and are connected through the conveying plate chain.

3. A semiautomatic tomato bare seedling transplanting machine as claimed in claim 1, characterized in that: three sides, except for one side close to the semicircular notch, of the lower surface of the conveying bottom plate, which is positioned on the seedling falling port, are respectively fixed with an extending plate which is vertically arranged, and an opening is formed in the position of the other semicircle of the bottom end of the conveying side plate, which is positioned on the unitary circle.

4. A semiautomatic tomato bare seedling transplanting machine as claimed in claim 3, characterized in that: the seedling supporting plate assembly comprises an inner side connecting plate, a seedling supporting side plate and a seedling supporting bottom plate, wherein the inner side connecting plate is tangent to the conveying plate chain and fixed with the conveying plate chain, a connecting shaft which is horizontal and vertical to the inner side connecting plate is fixed on the inner side connecting plate, the upper end of the seedling supporting side plate and the connecting shaft form a revolute pair, and the lower end of the seedling supporting side plate is hinged with the seedling supporting bottom plate; the seedling supporting side plates and the seedling supporting bottom plates in the seedling supporting plate assemblies at the semicircular gaps penetrate through the semicircular gaps and are in a vertical state under the action of self gravity, and the lower surfaces of the seedling supporting bottom plates in the seedling supporting plate assemblies on the conveying bottom plates are attached to the upper surfaces of the conveying bottom plates.

5. A semiautomatic tomato bare seedling transplanting machine as claimed in claim 1, characterized in that: one end of the warping rod, which is close to the upper rocker and the lower rocker, is provided with an integrally formed semicircular pushing block.

6. A semiautomatic tomato bare seedling transplanting machine as claimed in claim 4, characterized in that: the frame is provided with a soil covering device right behind the two seedling planting devices; the earthing device comprises an earthing wheel frame, a square tube, earthing wheel connecting sheets and earthing wheels, wherein two ends of the horizontally arranged square tube are fixed with the frame through the two earthing wheel frames, a pair of earthing wheel connecting sheets are arranged behind two collision blocks on the square tube, a plurality of pairs of holes which are equidistantly arranged are formed in the square tube, and each earthing wheel connecting sheet is fixed on the pair of holes through a bolt and a nut; two earthing wheel connection pieces in each pair of earthing wheel connection pieces are symmetrically and obliquely arranged relative to each other, and each earthing wheel connection piece is hinged with an earthing wheel.

7. A semiautomatic tomato bare seedling transplanting machine as claimed in claim 6, characterized in that: seats are fixed on the outer sides of the two seedling conveying devices on the frame, and a traction device is arranged at the front end of the frame; the traction device comprises a traction towing hook and a traction connecting block, and the traction towing hook is fixed on the frame through the traction connecting block.

8. Semi-automatic tomato bare seedling transplanting machine according to any one of claims 1 to 7, characterized in that: land wheel devices are arranged at four corners of the frame; the land wheel device comprises a land wheel and a land wheel shaft frame, wherein the land wheel shaft frame is fixed on the frame, and the land wheel is hinged on the land wheel shaft frame.

9. Semi-automatic tomato bare seedling transplanting machine according to any one of claims 1 to 7, characterized in that: the transmission device comprises a first bevel gear pair, a three-phase asynchronous motor, a second chain transmission mechanism, a reduction gearbox, a bevel gear shaft, a second bevel gear pair, a third chain transmission mechanism and an eccentric shaft, wherein the shells of the three-phase asynchronous motor and the reduction gearbox are fixed on the frame, an output shaft of the three-phase asynchronous motor is fixed with an input end of the reduction gearbox, an output shaft of the reduction gearbox is connected with the bevel gear shaft through the second chain transmission mechanism, the bevel gear shaft is connected with the eccentric shaft through the third chain transmission mechanism, and the bevel gear shaft and the eccentric shaft are parallel and horizontally arranged and form a revolute pair with the frame; the two eccentric wheels of the two seedling planting devices are fixed at two ends of the eccentric wheel shafts, and the driving chain wheel shafts of the first chain transmission mechanisms are respectively connected with two ends of the bevel gear shafts through the first bevel gear pair and the second bevel gear pair; wherein, three-phase asynchronous motor is by the controller control.

10. The transplanting method of a semi-automatic tomato bare seedling transplanting machine as claimed in claim 7, wherein: the method comprises the following steps:

Firstly, connecting a traction device with a tractor, placing tomato bare seedlings on a seedling placing table, and taking two seedling placing personnel on two seats; then a driver starts the tractor, the tractor drives the frame to advance through the traction device, and meanwhile, the transmission device drives the first two chain transmission mechanisms to work and drives the second eccentric wheels to rotate;

When the transmission device drives the first chain transmission mechanisms to work, the first chain transmission mechanisms drive the corresponding seedling supporting plate assemblies to circularly move along a route from the semicircular notch position to the opening position, from the opening position to the seedling falling position and from the seedling falling position to the semicircular notch position; when one seedling supporting plate assembly positioned at the semicircular notch position moves towards the opening position, the corresponding conveying bottom plate is contacted with the seedling supporting side plate of the seedling supporting plate assembly and pushes the seedling supporting side plate to rotate upwards, and along with the movement of the corresponding chain transmission mechanism I, the seedling supporting bottom plate of the seedling supporting plate assembly is dragged onto the conveying bottom plate by the seedling supporting side plate and is attached to the conveying bottom plate; when the seedling supporting plate assembly moves to the opening position, the chain transmission mechanism drives the seedling supporting plate assembly to turn around, the inner connecting plate of the seedling supporting plate assembly deflects outwards to keep the tangential posture of the conveying plate chain, and drives the seedling supporting side plate and the seedling supporting bottom plate to deflect outwards through the corresponding connecting shafts, so that the outer end of the seedling supporting bottom plate attached to the conveying bottom plate penetrates out of the opening, and the inner connecting plate drives the outer end of the seedling supporting bottom plate to retract into the conveying frame through the connecting shafts and the seedling supporting side plate after the chain transmission mechanism drives the seedling supporting plate assembly to complete turning; when the seedling supporting plate assembly moves to the seedling falling opening position, the seedling supporting bottom plate of the seedling supporting plate assembly is separated from the conveying bottom plate, the seedling supporting bottom plate and the corresponding seedling supporting side plates rotate downwards to a vertical state under the action of self gravity, and then the seedling supporting plate assembly enters the semicircular notch position;

When one seedling supporting plate assembly moves to a corresponding conveying bottom plate, the seedling supporting plate assembly, a seedling supporting side plate of the next seedling supporting plate assembly and the conveying side plate form a semi-closed area, and a seedling placing person places a bare tomato seedling in the semi-closed area; along with the continuous operation of the first chain transmission mechanism, two seedling placing personnel place a tomato bare seedling in each semi-closed area of the two seedling conveying devices, and the first chain transmission mechanism drives each tomato bare seedling to be conveyed to a seedling falling opening through each seedling supporting plate component; wherein, the first chain transmission mechanism drives the corresponding seedling supporting plate components to move towards the seedling falling opening at the same speed and opposite direction with the advancing speed of the frame;

When the transmission device drives the two eccentric wheels to rotate, the two eccentric wheels drive the two lower rocking bars to reciprocate up and down in a staggered way, and the lower rocking bars drive the upper rocking bars to reciprocate up and down synchronously through the bearing plates; because the connecting lines of the hinging centers of the two ends of the upper rocking bar and the hinging centers of the two ends of the lower rocking bar in each seedling planting device are parallel and have the same length, the upper rocking bar, the lower rocking bar, the bearing plate and the rack form a parallelogram mechanism, so that the bearing plate keeps vertical state to reciprocate up and down;

In the process of the staggered up-and-down reciprocating swing of the receiving plates of the two seedling planting devices, when the receiving plate in one seedling planting device drives the corresponding two planting devices to move to the highest position, the two planting devices are in a closed state, a seedling storage cavity formed by the closed grooves of the two planting devices is positioned right below a seedling dropping hole of the corresponding seedling conveying device, a bare tomato seedling is carried to the seedling dropping hole by a seedling supporting plate assembly of the seedling conveying device and falls into the seedling storage cavity, the eccentric wheel drives the receiving plate, the two closed planting devices and the bare tomato seedling to move downwards through the lower rocker along with the rotation of the eccentric wheel, one end of the rising rod, which is far away from the upper rocker and one end of the lower rocker, contacts a collision block along with the downward movement of the receiving plate, the tips of the two closed planting devices are inserted into soil at the moment, and move downwards along with the continuous movement of the receiving plate, the upper surface of a rectangular groove on the sliding rod is contacted with two transmission pins and pushes the two transmission pins to move downwards along two circular arc notches, meanwhile, the two transmission pins also slide horizontally along the rectangular groove and back to each other, so that two planting devices are driven to move back to back and dig out a soil pit, when a bearing plate moves to the lowest position, the two planting devices are completely opened, a bare tomato seedling falls into the soil pit, so that the transplanting work of the bare tomato seedling is finished, and meanwhile, the two planting devices in the other seedling planting device move to the highest position and take the bare tomato seedling transported by a seedling supporting plate component of the other seedling conveying device; then the eccentric wheel of the seedling planting device at the highest position drives the bearing plate and the two planting devices with the tomato bare seedlings to move downwards through the corresponding lower rocking rod, so that the transplanting work of the tomato bare seedlings is carried out, meanwhile, the eccentric wheel in the seedling planting device for completing the transplanting work of the tomato bare seedlings drives the bearing plate and the two opened planting devices to move upwards through the corresponding lower rocking rod, the restoring force of the tension spring drives the sliding rod to move upwards, after the sliding rod moves upwards for a certain distance, the lower surface of the rectangular groove on the sliding rod is contacted with the two transmission pins, the two transmission pins are pushed to move upwards along the two circular arc notches, meanwhile, the two transmission pins also slide horizontally and oppositely along the rectangular groove, so that the two planting devices are driven to move oppositely, the two planting devices are closed, and one end of the raising rod close to the upper rocking rod and one end of the lower rocking rod are pushed to rotate upwards, so that the raising rod rotates to the original position, and along with the rotation of the eccentric wheel, the lower rocking rod drives the bearing plate and the two closed planting devices to move upwards towards the seedling falling opening of the corresponding seedling conveying device, so that the next tomato bare seedlings conveyed by the corresponding seedling conveying device is ready to be picked; when the bare tomato seedlings fall from the seedling falling openings, the extending plates and the corresponding seedling supporting bottom plates correct the falling postures of the bare tomato seedlings, so that the bare tomato seedlings fall into the seedling storage cavity in a vertical state;

Along with the advancing of frame, the crisscross work of transplanting of two seedling devices that send and two seedling devices that plant for each naked seedling of tomato is crisscross to be transplanted in corresponding soil pit, and then accomplishes the grafting work of each naked seedling of tomato, and along with the advancing of frame, the frame drives earthing device and advances, and two pairs of earthing wheels in the earthing device are to the naked Miao Futu of tomato that corresponding seedling device was transplanted, and then accomplish the earthing work of each naked seedling of tomato, thereby accomplish the transplanting work of each naked seedling of tomato.