CN115500121A

CN115500121A - Transplanting mechanism of dry land transplanter capable of synchronously digging pits and transplanter

Info

Publication number: CN115500121A
Application number: CN202211107040.7A
Authority: CN
Inventors: 史波杰
Original assignee: Ningbo Zhonghe Lingke Technology Co ltd
Current assignee: Ningbo Zhonghe Lingke Technology Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-12-23
Anticipated expiration: 2042-09-07
Also published as: CN115500121B

Abstract

The invention relates to a transplanting mechanism of a dry land transplanter with synchronous pit opening, which comprises: inserting an arm assembly; a crank motion assembly; the digging assembly comprises a second rocker and a digging device, wherein the second rocker rotates by taking a third axis as a rotation center, the digging device is rotationally connected with the end part of the second rocker and is provided with a connecting end and a digging end head, and the middle part of the digging device is rotationally connected to the transplanting arm. The hole digging action is completed through a link mechanism formed by matching the hole digger with the second rocker, when the transplanting arm cuts the seedling, the hole digger can be far away from the seedling taking claw and cannot interfere with the seedling taking port of the transplanter, and when the transplanting arm moves to the lower part for transplanting, the hole digger can be close to the seedling taking claw, so that the seedling can fall into the hole accurately, and the effect of synchronously digging the hole and planting the seedling is ensured.

Description

Transplanting mechanism of dry land transplanter capable of synchronously digging pits and transplanter

Technical Field

The invention relates to the technical field of transplanting machines, in particular to a transplanting mechanism of a dry land transplanting machine with synchronous pit opening and a transplanting machine.

Background

Seedling transplantation is an important link in the production process of crops, particularly vegetables, more than 60% of vegetable varieties adopt seedling transplantation modes, most of the traditional transplantation modes are manual transplantation, the operation efficiency is low, the labor intensity is high, the cost is high, the optimal time for transplantation is easily missed, and the production scale and the development space of the vegetables are severely limited. At present, the transplanter is used for transplanting seedlings, so that the labor intensity can be greatly reduced and the working benefit can be improved.

For example, the Chinese patent application with the application number of CN201510013315.4 (the granted publication number of CN 104541707B) discloses an automatic vegetable transplanting machine, which comprises a rack, and a walking device, a transmission device, a transplanting device, a seedling carrying platform, a soil preparation device and a soil covering device which are arranged on the rack; the soil preparation device is arranged at the front part of the frame, and the soil covering device is arranged at the rear part of the frame; the transmission device drives the transplanting device and the seedling carrying platform; the transplanting device comprises a seedling taking mechanism and a seedling planting mechanism; the soil preparation device levels the raised ridges, the seedling taking mechanism takes out the seedlings on the seedling carrying platform and puts the seedlings into the seedling planting mechanism, and the seedling planting mechanism digs pits in the ridges and plants the seedlings into soil; the soil covering device covers soil on the seedlings. The transplanting device of the transplanter is complex in structure, the transplanting process is relatively complex, the seedlings on the seedling carrying platforms need to be taken out through the seedling taking mechanism, then the seedlings are put into the seedling planting mechanism, and then the seedling planting mechanism digs the pits in the ridges and plants the seedlings into the soil.

For another example, chinese patent application publication No. CN103125188A discloses a rice pot seedling planting arm, which works by taking out rice seedlings from a pot tray by using a seedling taking clamp, then planting the pot seedlings into a mud field by using a seedling pusher, wherein the opening and closing of the seedling taking clamp is controlled by the expansion and contraction of a seedling pusher, the expansion and contraction of the seedling pusher is controlled by a radial cam, when the planting arm reaches a seedling taking point, the seedling pusher retracts, the seedling taking clamp is closed, and when the seedling pusher retracts to the maximum, the seedling taking clamp is tightened; when the planting arm reaches the planting point, the seedling pusher extends out, the seedling taking clamp is opened, and when the seedling pusher extends out to the maximum, the seedling taking clamp is opened to the maximum. However, in the ideal transplanting agriculture, a pit is dug in the muddy ground, and then the seedling is placed in the muddy pit, so as to avoid damage to the seedling in the process of transplanting the seedling, but the known transplanting arm is mutually related due to the opening and closing of the seedling taking clamp and the extension and retraction of the seedling pusher, and the seedling is pushed into the muddy surface by the seedling pusher, so that the seedling can not be transplanted after the pit is dug.

In order to solve the problems, the Chinese patent with the application number of 201698580.6 (with the publication number of CN 105815016B) discloses a planting arm of a rice pot seedling planting machine, wherein a planting arm shell and a planting arm cover are fixed together to form a mounting chamber; a push rod, a shifting fork and a radial cam are arranged in the mounting chamber, a pit digger is fixed at the extending end of the push rod, and the radial cam is mounted in the planting arm shell through a rotating shaft; the left axial cam and the right axial cam are fixed on the rotating shaft and are respectively arranged on two sides of the radial cam; the planting arm cover is rotatably provided with a left swing arm and a right swing arm, the corresponding swing arms are matched with the cam surfaces of the corresponding axial cams in the installation chamber, and the corresponding swing arms are fixedly connected with the corresponding seedling taking clamps outside the installation chamber. When power is input to the rotating shaft, the push rod returns at the seedling taking position, and the seedling taking clamp grabs seedlings from the pot plate from opening to closing; at the position of the seedling planting point, the hole digger firstly extends out of the mud land to dig a hole and then retracts, at the moment, the seedling taking clamp is loosened, the seedling is planted in the hole, and therefore the seedling cannot be damaged in the whole seedling planting process.

However, the planting arm of the planting machine in the above patent application has certain disadvantages in the actual use process, firstly, the digging device in the patent application is fixed on the seedling pushing rod of the planting arm, the transplanting action of the digging device and the planting arm is basically a motion curve, and the digging device is close to the seedling taking clamp, so the interference problem is easy to occur in the seedling taking process. Secondly, the digging action of the planting arm in the patent application is driven by the push rod to do linear extension and retraction, and the extension and retraction action of the push rod is driven by the cam rotation, so the moment of the transmission action is limited, and the planting arm can only be applied to paddy field rice transplanting (very soft mud) and can not be applied to dry land. Finally, the planting arm of the planting machine can only be used for clamping pot seedlings, the seedling taking speed is very low, and the planting arm is not suitable for high-speed transplanting operation in dry land.

Disclosure of Invention

The invention aims to solve the first technical problem and provides a transplanting mechanism of a dry land transplanter capable of synchronously digging a pit, which realizes synchronous action of a seedling taking process and a pit digging process through the same transplanting mechanism and can effectively avoid the problem of interference between a seedling taking claw and a pit digger in the seedling taking process.

The second technical problem to be solved by the present invention is to provide a transplanter applying the above-mentioned transplanting mechanism in view of the current state of the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a mechanism is planted to dry land transplanter of synchronous division of pit includes:

the transplanting arm assembly comprises a first rocker and a transplanting arm, the first rocker rotates by taking a first axis as a rotation center, the transplanting arm is rotatably connected with the end part of the first rocker, and one end of the transplanting arm, which is far away from the first rocker, is provided with a seedling taking claw for taking seedlings;

the crank motion assembly comprises a crank which rotates by taking a second axis as a rotation center, the end part of the crank is rotationally connected with the middle part of the transplanting arm, and the transplanting arm assembly has a seedling taking state at a high position and a seedling feeding state at a low position in the motion process;

the digging assembly comprises a second rocker and a digging device, wherein the second rocker rotates by taking a third axis as a rotation center, the digging device is rotatably connected with the end part of the second rocker, the digging device is provided with a connecting end used for being rotatably connected with the second rocker and a digging end used for cutting into soil to dig a pit in the rotating process, and the middle part of the digging device is rotatably connected to the transplanting arm;

a straight line of a rotating center of the rotating connecting position of the first rocker and the transplanting arm is marked as a fourth axis, a straight line of a rotating center of the rotating connecting position of the second rocker and the hole digger is marked as a fifth axis, a straight line of a rotating center of the rotating connecting position of the hole digger and the transplanting arm is marked as a sixth axis, and the first axis, the second axis, the third axis, the fourth axis, the fifth axis and the sixth axis are parallel to each other;

when the transplanting arm assembly is in a seedling taking state, the digging end of the hole digger is positioned on one side, away from the first axis, below the seedling taking claw of the transplanting arm, and the digging end and the seedling taking claw are away from each other;

when the transplanting arm assembly is in a seedling feeding state, the digging end of the hole digger is positioned below the seedling taking claw of the transplanting arm and close to one side of the first axis, and the digging end and the seedling taking claw are close to each other.

In order to better match the seedling taking action of the transplanting arm and the digging action of the hole digger in the whole movement process of the transplanting mechanism, the digging end of the hole digger can cut into soil at a smaller acute angle, the hole digger and the transplanting arm are L-shaped integrally, and the digging end of the hole digger is positioned below the transplanting arm.

The transplanting arm and the pit digger are sequentially arranged in the vertical direction, so that the seedling taking claw of the transplanting arm and the pit digging end of the pit digger can correspond to each other in the vertical direction, and seedlings on the seedling taking claw can smoothly fall into a pit position which is positioned below the seedling taking claw and is formed by the pit digger in the deflection process.

In order to realize the rotary connection of the transplanting arm and the digging device, the transplanting arm is provided with a connecting seat extending downwards at a position adjacent to a seedling taking claw of the transplanting arm, and an L-shaped folded angle part of the digging device is hinged on the connecting seat.

As an improvement, the first axis position is lower than the third axis position, and is located being close to of third axis one side of digging pit end, the fourth axis is located the top of first axis, and is located the first axis is kept away from get one side of seedling claw, the fifth axis is located the below of third axis, and is located the third axis is close to one side of digging pit end, the sixth axis is located the second axis is close to the one side of getting the seedling claw. In the seedling taking state, the seedling taking claw of the transplanting arm is far away from the digging end of the hole digger, so that the contact interference between the seedling taking claw and other parts (such as a seedling carrying plate) of the transplanter can be avoided; and in the seedling feeding state, the seedling taking claw of the transplanting arm is close to the digging end of the hole digger, so that seedlings on the seedling taking claw can be timely and accurately pushed into the hole position after digging is completed, and the seedling planting effect is ensured.

In order to push the seedlings after seedling taking off from the seedling taking claw, a seedling pushing mechanism for pushing the seedlings on the seedling taking claw down is also arranged on the transplanting wall.

In order to simplify the structure of the seedling pushing mechanism, a mounting cavity is further defined in the transplanting arm;

the seedling pushing mechanism comprises:

the seedling pusher is arranged on the part of the transplanting arm, which is correspondingly adjacent to the seedling taking claw, and can relatively extend or retract along the extension direction of the part of the transplanting arm;

the seedling pushing movement mechanism is arranged in the mounting cavity and comprises a cam, a swinging rod and an elastic piece, the cam is driven by the crank and can rotate around the axis of the cam, the swinging rod is rotatably connected in the mounting cavity, a first end of the swinging rod is rotatably connected with the inner end of the seedling pushing device, a second end of the swinging rod is abutted against the peripheral surface of the cam, and the elastic piece acts on the swinging rod and enables the swinging rod to always have a tendency of deflecting towards the position of the seedling taking claw.

The elastic piece can adopt various prior arts, and can comprise various elastic elements such as a pressure spring, a torsion spring and a reed, but is matched with the swinging rod better, the elastic piece is a spring, the inner wall of the installation cavity of the inserting arm is provided with a positioning groove for installing the spring, and the swinging rod is provided with a positioning convex part for sleeving the end part of the spring at the position corresponding to the spring.

The second technical problem to be solved by the invention is to solve the current situation of the prior art, and the transplanter comprises a rack and an inserting and planting mechanism arranged on the rack, wherein the inserting and planting mechanism is the inserting and planting mechanism.

In order to install the transplanting mechanism on the rack, the rack is provided with a transplanting power box, a fixing frame and a hinged seat, the fixing frame is located above the front side of the hinged seat, the crank is in transmission connection with the transplanting power box, the first rocker is rotationally connected to the hinged seat, and the second rocker is rotationally connected to the fixing frame.

In order to improve the efficiency of transplanting, be equipped with seedling carrying plate in the frame, seedling carrying plate top-down slopes forward, and the subassembly of digging a pit, planting arm subassembly and crank motion subassembly of mutually supporting have constituted a set of unit of planting of inserting, plant the mechanism including bilateral symmetry's two units of planting of inserting, these two units of planting of inserting are connected with the same power output shaft transmission of planting the headstock.

Compared with the prior art, the invention has the advantages that: the digging component of the transplanting mechanism is linked with the transplanting arm component, and the digging device of the digging component is driven to move together through the deflection action in the seedling taking process of the transplanting arm, so that the seedling taking process and the digging process of the transplanting arm are completed by the driving of the same power mechanism, and the structure of the transplanting mechanism is simplified. On this basis, the subassembly of digging pit is accomplished the action of digging pit through the link mechanism that the ware of digging pit and second rocker cooperation formed, when transplanting the arm and surely getting the seedling, the ware of digging pit can keep away from and get the seedling claw, can not form with the device such as the seedling mouth of getting of transplanter and interfere, and when transplanting the arm and removing the below and transplanting rice seedlings, the ware of digging pit can be close again and get the seedling claw for the seedling can fall into in the pit accurately, has guaranteed the effect of synchronous digging pit, planting rice seedlings. Particularly, the digging component is a connecting rod transmission mechanism formed by the rod-shaped digging device and the second rocker, can bear larger torque, and ensures that the digging device can effectively cut into the ground, thereby being better suitable for dry land digging operation.

Drawings

Fig. 1 is a schematic perspective view of an insertion mechanism according to an embodiment of the present invention;

FIG. 2 is a left side view (in a seedling-picking state) of the transplanting mechanism according to the embodiment of the present invention;

FIG. 3 is a schematic perspective view of another angle of the insertion mechanism according to the embodiment of the present invention;

FIG. 4 is a front view of an insertion mechanism according to an embodiment of the present invention;

FIG. 5 is a right side view of the transplanting mechanism according to the embodiment of the present invention (the transplanting mechanism is a right side position transplanting mechanism, in a seedling-picking state);

FIG. 6 is a cross-sectional view (in a state of digging pit) of the transplanting arm of the transplanting mechanism of FIG. 5, cut vertically in the front-rear direction;

FIG. 7 is a cross-sectional view (in a seedling-picking state) of the transplanting arm of the transplanting mechanism of FIG. 5, which is vertically cut along the front-rear direction;

FIG. 8 is a schematic perspective view of a transplanter in accordance with an embodiment of the present invention;

FIG. 9 is a schematic perspective view of the transplanter shown in FIG. 8 without the frame;

FIG. 10 is a diagram of the moving tracks (along the traveling direction of the transplanter) of the digging device and the seedling-fetching claw of the transplanting mechanism according to the embodiment of the present invention;

fig. 11 is a front view of fig. 9.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity.

Referring to fig. 1-11, a transplanting mechanism of a dry land transplanter capable of synchronously digging pits comprises a transplanting arm assembly, a crank motion assembly and a pit digging assembly.

Referring to fig. 1, the transplanting arm assembly is used for taking down seedlings on a seedling carrying plate 32 of a frame 31 of a transplanter and transferring the seedlings into soil (a pit dug by a digging assembly), and specifically comprises a first rocker 11, a transplanting arm 12 and a seedling pushing mechanism 13. The first end of the first rocking bar 11 is generally connected to the frame 31 of the transplanter through a pin shaft in a rotating manner, and the second end is connected to the first end of the transplanting wall in a rotating manner, wherein the straight line of the rotating center of the rotating connection position of the first rocking bar 11 and the frame 31 is marked as a first axis A1, and the straight line of the rotating center of the rotating connection position of the second end of the first rocking bar 11 and the first end of the transplanting arm 12 is marked as a fourth axis A4. The transplanting arm 12 is L-shaped as a whole, a seedling taking claw 121 for taking seedlings is arranged at a second end (the end far away from the first rocker 11), and the seedling taking claw 121 is connected to the second end of the transplanting arm 12 through a screw. The seedling taking claw 121 is generally of a fork head structure with a bayonet in the middle. The transplanting arm 12 is a hollow structure, a mounting cavity is formed inside the transplanting arm, wherein part of the transmission part of the seedling pushing mechanism 13 is arranged in the mounting cavity of the transplanting arm 12, and the seedling pusher 135 of the seedling pushing mechanism 13 is arranged at the second end of the transplanting arm 12 and can extend and retract relative to the transplanting arm 12 along the extension direction of the part at the second end of the transplanting arm 12. Specifically, when the seedlings are taken, the seedling pusher 135 retracts relative to the transplanting arm 12 to realize abdication in the seedling taking process, and when the seedlings need to be transferred to the pit after the seedlings are taken, the seedling pusher 135 extends out to push the seedlings down from the seedling taking claw 121. The driving process of the seedling-pushing mechanism 13 is explained in detail below.

With continued reference to fig. 1, the crank motion assembly comprises a crank 10, wherein the crank 10 can be connected with a power output shaft of a transplanting power box 36 of the transplanter, and the crank 10 rotates around a second axis A2 under the driving of the transplanting power box 36, specifically, rotates circularly along the direction of the single arrow of S2 shown in fig. 1. The end of the crank 10 is rotatably connected with the middle part of the transplanting arm 12, and in the rotation process of the crank 10, the reciprocating deflection of the transplanting arm assembly around the first axis A1 can be driven, and the first rocker 11 and the transplanting arm 12 can be folded and extended in the reciprocating deflection process, so that the seedling taking action of displacing the seedling taking claw 121 to the high position and the seedling delivering process of displacing the seedling taking claw 121 to the low position are completed.

The transplanting arm assembly has a seedling taking state at a high position and a seedling sending state at a low position in the moving process, wherein the seedling taking state is shown in detail in figure 7, and the seedling sending state is shown in figure 5 or figure 6.

Referring to fig. 6, the seedling pushing mechanism 13 comprises a seedling pusher 135 and a seedling pushing movement mechanism, the seedling pushing movement mechanism comprises a cam 131, a swing lever 132 and an elastic piece 134.

The L-shaped transplanting arm 12 is divided into a first section 12a for connecting with the first rocker 11 and a second section 12b for connecting with the seedling taking claw 121 by taking a bevel part as a boundary, wherein the seedling pusher 135 comprises a seedling pushing rod 1351 and a seedling pushing head 1352 connected with the end part of the seedling pushing rod 1351, the seedling pushing rod 1351 is arranged in the linear channel 1201 of the second section 12b of the transplanting arm 12 in a reciprocating sliding way, and the linear moving direction of the seedling pushing rod 1351 is shown as the L direction in figure 7. The seedling pushing head 1352 is provided with an extension part 1350 which can extend into the bayonet position of the seedling taking claw 121, and the extension part 1350 can push the seedling in the bayonet of the seedling taking claw 121 into a pit position.

Referring to fig. 6, the first section of the insertion arm 12 also defines a mounting cavity 120 therein. All parts of the seedling pushing movement mechanism are arranged in the mounting cavity 120.

The end of the crank 10 is pivotally connected to the first section of the implanting arm 12 by a pin that extends into the mounting cavity of the first section of the implanting arm 12. The cam 131 is attached to the pin and is capable of rotating with the pin. The cam 131 is a member having a curved profile. The middle part of the swing rod 132 is also rotatably connected in the mounting cavity through another pin shaft, and the first end thereof is rotatably connected with the inner end part of the seedling pusher 135 (i.e. the end of the seedling pushing rod 1351 far away from the seedling pushing head 1352), and the second end thereof is abutted against the outer peripheral surface of the cam 131. During the rotation of the cam 131 driven by the crank 10, the second end of the swing lever 132 is sequentially abutted against different deflection positions of the outer peripheral surface of the cam 131, so that the swing lever 132 is also deflected by different angles, thereby driving the seedling pusher 135 to extend or retract relative to the transplanting arm 12.

The elastic member 134 of this embodiment is preferably a spring. The spring is arranged on one side of the swinging rod 132 far away from the seedling taking claw 121 and is abutted against the swinging rod 132, and under the elastic force of the spring, the swinging rod 132 always deflects towards the position of the seedling taking claw 121. Specifically, as shown in fig. 7, in the seedling taking state, the area with the large eccentric distance on the outer circumferential wall of the cam 131 abuts against the second end of the swinging rod 132, so that the swinging rod 132 can be driven to deflect to the side far away from the seedling taking claw 121 (as shown in direction Q1 in fig. 7) against the elastic force of the spring, and the seedling pusher 135 is driven to retract relative to the transplanting arm 12, so as to realize abdicating in the seedling taking process of the seedling taking claw 121. As shown in fig. 6, in the seedling feeding state, the area with small eccentric distance on the outer peripheral wall of the cam 131 abuts against the second end of the swing lever 132, so as to allow the swing lever 132 to deflect to the side where the seedling fetching claw 121 is located (as shown in direction Q2 in fig. 7) under the elastic force of the spring, and further to drive the seedling pusher 135 to extend out relative to the transplanting arm 12, thereby completing the seedling pushing process.

In order to realize the reliable positioning of the spring, the inner wall of the mounting cavity of the insertion arm 12 is provided with a positioning groove 123 for mounting the spring, and the swinging rod 132 is also provided with a positioning protrusion 133 at a position corresponding to the spring, wherein one end of the spring is limited in the positioning groove 123, and the other end of the spring is sleeved on the positioning protrusion 133.

Referring to FIG. 5, the pit assembly includes a second rocker 21 and a pit digger 22. The first end of the second rocker 21 is rotatably connected to the rack 31 of the transplanter, the second end of the second rocker 21 is rotatably connected to the hole digger 22, wherein a straight line of a rotating center of a rotating connection position of the first end of the second rocker 21 and the rack 31 is marked as a third axis A3, and a straight line of a rotating center of a rotating connection position of the second rocker 21 and the hole digger 22 is marked as a fifth axis A5. Specifically, the earth boring machine 22 is generally L-shaped and has a connection end 221 for rotatably connecting with the second swing lever 21 and a boring head 222 for cutting into earth during rotation to perform boring, wherein the boring head 222 is of a hook-like configuration.

The L-shaped bevel of the digging device 22 of the embodiment is rotatably connected with the planting arm 12. Specifically, the inside of the L-shaped folded part of the inserting arm 12 has a connecting seat 122, and the L-shaped folded part of the digging device 22 is pivotally connected to the connecting seat 122 by a pin. The line in which the center of rotation of the earth boring device 22 is at the rotational connection with the insertion arm 12 is marked as the sixth axis A6. The sixth axis A6 is parallel to the third axis A3. Referring to fig. 2, the digging head 222 of the digging device 22 is located below the seedling-taking claw 121 (seedling pusher 135) of the transplanting arm 12, and is spaced apart from the same. The extending direction X1 of the connection part of the digging device 22 and the digging head 222 is basically consistent with the extending direction X2 of the seedling taking claw 121 of the transplanting arm 12, which is shown in detail in figure 2.

Referring to fig. 1 and 2, the first axis A1, the second axis A2, the third axis A3, the fourth axis A4, the fifth axis A5, and the sixth axis A6 all extend parallel to each other, i.e., extend in the left-right direction. Specifically, the first axis A1 is located lower than the third axis A3 and located on a side of the third axis A3 close to the digging tip 222, the fourth axis A4 is located above the first axis A1 and located on a side of the first axis A1 away from the seedling-taking claw 121, the fifth axis A5 is located below the third axis A3 and located on a side of the third axis A3 close to the digging tip 222, and the sixth axis A6 is located on a side of the second axis A2 close to the seedling-taking claw 121. That is, the extending direction of the first rocker 11 (from the first end to the second end thereof) is always inclined from bottom to top toward the side away from the seedling-taking claw 121, and the inclined angle is only slightly changed in one transplanting period (i.e. one rotation of the crank 10). The second rocker 21 (from the first end to the second end) is always inclined from top to bottom towards the side of the digging tip 222, and the inclination angle is only slightly changed in one transplanting period (i.e. one rotation of the crank 10). The first rocking lever 11 is reciprocated in the direction of the double arrow shown by S1 in fig. 1, and the second rocking lever 21 is reciprocated in the direction of the double arrow shown by S3 in fig. 1.

In the action process from the seedling taking state shown in fig. 2 to the seedling digging and feeding state shown in fig. 5, the above-mentioned structure is designed to make the digging device 22 and the seedling taking claw 121 have relatively independent motion curves, such as a motion curve M1 of the seedling taking claw 121 and a motion curve M2 of the digging end 222 of the digging device 22 in the forward moving process of the transplanter (the forward direction is shown by a straight arrow a in fig. 10) shown in fig. 10. In the seedling taking state, the seedling taking claw 121 of the transplanting arm 12 is far away from the digging tip 222 of the digging device 22, specifically, as shown in fig. 2, the digging tip 222 of the digging device 22 is located at a side below the seedling taking claw 121 of the transplanting arm 12 and far away from the first axis A1 (it can also be understood that a distance N1 between the digging tip 222 and the first axis A1 in the horizontal direction is greater than a distance N2 between the seedling taking claw 121 and the first axis A1 in the horizontal direction, see fig. 2 in detail), at this time, a distance between the digging tip 222 of the digging device 22 and the seedling taking claw 121 of the transplanting arm 12 is relatively large, and there is a large distance offset in the front-back direction, so as to avoid the seedling taking claw 121 from interfering with other parts (such as the seedling carrying plate 32 and the guide rail 33) of the transplanting machine. In the seedling delivering state, the seedling taking claw 121 of the transplanting arm 12 is close to the digging tip 222 of the digging device 22, specifically, as shown in fig. 5, the digging tip 222 of the digging device 22 is located below the seedling taking claw 121 of the transplanting arm 12 on the side close to the first axis A1 (it can be understood that the distance N1 between the digging tip 222 and the first axis A1 in the horizontal direction is smaller than the distance N2 between the seedling taking claw 121 and the first axis A1 in the horizontal direction, which is shown in fig. 5 in detail), at this time, the distance between the digging tip 222 of the digging device 22 and the seedling taking claw 121 of the transplanting arm 12 is relatively small, and the offset distance in the front-rear direction is also small, so that the seedlings on the seedling taking claw 121 can be timely and accurately pushed into the pit after the digging is completed, and the transplanting effect is ensured.

The digging component of the transplanting mechanism is linked with the transplanting arm component, and the digging device 22 of the digging component is driven to move together through the deflection action in the seedling taking process of the transplanting arm 12, so that the seedling taking process and the pit opening process of the transplanting arm 12 are completed by the driving of the same power mechanism, and the structure of the transplanting mechanism is simplified. On this basis, the subassembly of digging pit is through digging pit ware 22 and the link mechanism that second rocker 21 cooperation formed to accomplish the action of digging pit, when transplanting arm 12 and surely getting the seedling, digging pit ware 22 can keep away from and get seedling claw 121, can not form with the device such as the seedling mouth of getting of transplanter and interfere, and when transplanting arm 12 and removing the below and transplanting rice seedlings, digging pit ware 22 can be close again and get seedling claw 121 for the seedling can fall into the hole accurately, has guaranteed the effect of synchronous digging pit, planting rice seedlings. In particular, the digging assembly is a link transmission mechanism formed by the rod-shaped digging device 22 and the second rocker 21, which can bear a large moment and ensure that the digging device 22 can effectively cut into the ground, and in addition, the deflecting type digging device 22 is matched with the hook-shaped digging end 222, so that the digging end 222 of the digging device 22 can cut into the soil at a small acute angle, and therefore, the digging assembly can be better suitable for dry-land digging operation.

Referring to fig. 8 to fig. 11, the present embodiment further relates to a transplanter, which includes a frame 31 and the above-mentioned transplanting mechanism. The frame 31 is provided with a power device, a seedling carrying plate 32 and a slide rail. The power device comprises an inserting power box 36, and a power output shaft of the inserting power box 36 is in transmission connection with a crank 10 of the inserting mechanism.

The seedling carrying plate 32 is arranged at the rear side of the frame 31, specifically, is arranged on a slide rail transversely extending at the rear side of the frame 31 in a sliding manner. Blanket seedlings can be placed on the seedling carrying plate 32, and the seedling carrying plate 32 inclines forwards from top to bottom. The transplanting mechanism is arranged near the bottom of the seedling carrying plate 32 and used for taking down and transferring the bottommost seedlings on the seedling carrying plate 32 to the lower part, and after the pit digger 22 completes synchronous pit digging, the seedlings are pushed into the opened soil pit by the seedling pushing mechanism 13.

The pit digging component, the planting arm component and the crank motion component which are matched with each other in the planting mechanism form a group of planting units. The transplanting mechanism includes two transplanting units arranged bilaterally symmetrically, which are located on the left and right sides of the transplanting power box 36 and are driven by the same transplanting power box 36. The frame 31 is provided with a fixing bracket 35 and a hinge base 34. The fixing frame 35 is a rod structure extending left and right and is located above the front side of the hinge base 34. The first rocker 11 of the transplanting arm assembly is rotatably connected to the hinge seat 34 through a pin shaft, and the second rocker 21 of the digging assembly is rotatably connected to the fixing frame 35. Thus, the first axis A1 is a straight line of the rotation center of the rotation connection position of the first rocker 11 and the hinge base 34, the second axis A2 is a straight line of the rotation center of the rotation connection position of the power output shaft of the crank 10 and the planting power box 36, and the third axis A3 is a straight line of the rotation center of the rotation connection position of the second rocker 21 and the fixing frame 35.

In order to ensure the transplanting efficiency of the seedlings, the seedling carrying plates 32 on the transplanter of the present embodiment are provided in plurality, and each seedling carrying plate 32 is sequentially arranged along the left and right direction of the frame 31, and correspondingly, the transplanting mechanism is provided in plurality and corresponds to each seedling carrying plate 32.

As used herein, the term "drivingly connected" means that two elements are directly connected to each other or indirectly connected through a drive mechanism.

Claims

1. A transplanting mechanism of a dry land transplanter with synchronous pit opening comprises:

the transplanting arm assembly comprises a first rocker (11) rotating by taking a first axis (A1) as a rotating center and a transplanting arm (12) rotatably connected with the end part of the first rocker (11), wherein one end, far away from the first rocker (11), of the transplanting arm (12) is provided with a seedling taking claw (121) for taking seedlings;

the crank motion assembly comprises a crank (10) which rotates by taking a second axis (A2) as a rotation center, the end part of the crank (10) is rotationally connected with the middle part of the transplanting arm (12), and the transplanting arm assembly has a seedling taking state at a high position and a seedling feeding state at a low position in the motion process;

it is characterized by also comprising:

the pit digging assembly comprises a second rocker (21) rotating by taking a third axis (A3) as a rotating center and a pit digging device (22) rotatably connected with the end part of the second rocker (21), wherein the pit digging device (22) is provided with a connecting end (221) for rotatably connecting the second rocker (21) and a pit digging head (222) for cutting into soil to dig pits in the rotating process, and the middle part of the pit digging device (22) is rotatably connected to the transplanting arm (12);

a straight line of a rotating center of a rotating connection position of the first rocker (11) and the transplanting arm (12) is marked as a fourth axis (A4), a straight line of a rotating center of a rotating connection position of the second rocker (21) and the pit digger (22) is marked as a fifth axis (A5), a straight line of a rotating center of a rotating connection position of the pit digger (22) and the transplanting arm (12) is marked as a sixth axis (A6), and the first axis (A1), the second axis (A2), the third axis (A3), the fourth axis (A4), the fifth axis (A5) and the sixth axis (A6) are parallel to each other;

when the transplanting arm assembly is in a seedling taking state, a digging end (222) of the digging device (22) is positioned on one side, away from the first axis (A1), below a seedling taking claw (121) of the transplanting arm (12), and the digging end (222) and the seedling taking claw (121) are away from each other;

when the transplanting arm assembly is in a seedling feeding state, a digging end (222) of the digging device (22) is positioned below the seedling taking claw (121) of the transplanting arm (12) and close to one side of the first axis (A1), and the digging end (222) and the seedling taking claw (121) are close to each other.

2. The transplanting mechanism of a dry land transplanter with synchronously opened pits as claimed in claim 1, wherein: the digging device (22) and the transplanting arm (12) are both L-shaped, and a digging end head (222) of the digging device (22) is positioned below the transplanting arm (12).

3. The transplanting mechanism of the dry land transplanter with synchronously opened pits of claim 2, which is characterized in that: the transplanting arm (12) is provided with a connecting seat (122) extending downwards at a position adjacent to the seedling taking claw (121), and the L-shaped folded angle part of the pit digger (22) is hinged on the connecting seat (122).

4. The transplanting mechanism of a dry land transplanter with synchronously opened pits as claimed in claim 3, wherein: the first axis (A1) is located at a position lower than a position of a third axis (A3), and is located close to the third axis (A3) on one side of the digging end (222), the fourth axis (A4) is located above the first axis (A1) and is located far away from the first axis (A1) on one side of the digging end (121), the fifth axis (A5) is located below the third axis (A3) and is located close to the third axis (A3) on one side of the digging end (222), and the sixth axis (A6) is located on one side of the second axis (A2) close to the digging end (121).

5. The transplanting mechanism of the dry land transplanter with synchronously opened pits of any one of claims 1 to 4, which is characterized in that: the transplanting wall is also provided with a seedling pushing mechanism (13) for pushing down the seedlings on the seedling taking claw (121).

6. The transplanting mechanism of a dry land transplanter with synchronously opened pits as claimed in claim 5, wherein:

the transplanting arm (12) is internally provided with a mounting cavity;

the seedling pushing mechanism comprises:

the seedling pusher (135) is arranged on the part of the transplanting arm (12) corresponding to the seedling taking claw (121) and can relatively extend or retract along the extending direction of the part of the transplanting arm (12);

the seedling pushing movement mechanism is arranged in the mounting cavity and comprises a cam (131), a swinging rod (132) and an elastic piece (134), the cam (131) is driven by the crank (10) to rotate around the axis of the cam, the swinging rod (132) is rotatably connected in the mounting cavity, the first end of the swinging rod (132) is rotatably connected with the inner end of the seedling pusher (135), the second end of the swinging rod is abutted against the outer peripheral surface of the cam (131), and the elastic piece (134) acts on the swinging rod (132) and enables the swinging rod (132) to always have a tendency of deflecting towards the position of the seedling taking claw (121).

7. The transplanting mechanism of a dry land transplanter with synchronously opened pits as claimed in claim 6, wherein: the elastic piece (134) is a spring, a positioning groove (123) for mounting the spring is formed in the inner wall of the mounting cavity of the inserting arm (12), and a positioning convex portion (133) for sleeving the end portion of the spring is arranged on the swinging rod (132) at the position corresponding to the spring.

8. The utility model provides a transplanter, includes frame (31) and locates mechanism of planting is inserted on frame (31), its characterized in that: the insertion mechanism is as defined in any one of claims 1 to 7.

9. The transplanter according to claim 8, wherein: be equipped with on frame (31) and insert headstock (36), mount (35) and articulated seat (34), mount (35) are located the front side top of articulated seat (34), crank (10) with it connects to insert headstock (36) transmission, first rocker (11) rotate to be connected articulated seat (34) on, second rocker (21) rotate to be connected on mount (35).

10. The transplanter according to claim 8, wherein: be equipped with seedling carrying plate (32) on frame (31), seedling carrying plate (32) top-down slopes forward, and the subassembly of digging a pit, planting arm subassembly and crank motion subassembly of mutually supporting have constituted a set of unit of planting of inserting, plant the mechanism including bilateral symmetry's two units of planting of inserting, these two units of planting of inserting are connected with the same power take off end transmission of planting headstock (36).