Improved opening mechanism for a transplanting cylinder

Abstract

The utility model belongs to the field of seedling transplanting, disclose an improved opening mechanism of transplanting cylinder, can prevent mechanism to appear "dead point", thereby increase transplanting cylinder cover's maximum opening degree greatly, including drive steering gear, drive crank arm, proximal end hinge lever and far end articulated chain, drive steering gear sets up at the top of transplanting cylinder cover, drive crank arm sets up in drive steering gear's output shaft, drive crank arm forms lever mechanism in vertical plane, drive crank arm forms proximal end drive arm and far end drive arm based on self articulation point, proximal end drive arm has near drive end, far end drive arm has far drive end, the both ends of proximal end hinge lever are hinged with near drive end, transplanting cylinder cover respectively, the both ends of far end articulated chain are hinged with far drive end, transplanting cylinder cover respectively, far end articulated chain includes first hinge lever and second hinge lever that articulated end in proper order, the scalar sum of proximal end hinge lever and proximal end drive arm is greater than the scalar sum of first hinge lever, second hinge lever and far end drive arm.

Description

Technical Field

[0001] This utility model belongs to the field of seedling transplanting, and specifically relates to an improved opening mechanism for a transplanting cylinder. Background Technology

[0002] Currently, the transplanting operation has achieved automated seedling replenishment, which means that the seedlings to be transplanted are automatically inserted into the predetermined planting ground.

[0003] Chinese utility model (publication number: CN222366590U) discloses an automatic transplanting and seedling replenishment machine, which replenishes seedlings by placing seedlings in a transplanting cylinder and opening the transplanting cylinder cover below the transplanting cylinder. Specifically, a servo motor drives a bending rod to rotate, and the bending rod drives the transplanting cylinder cover connected to it to rotate and open.

[0004] The drawback of this method is that, due to the limited internal space of the automatic transplanting and seedling replenishment machine, it is difficult to make the bending rods large enough, which limits the maximum opening of the transplanting cylinder cover and sometimes makes it difficult to complete the seedling replenishment operation. Therefore, in order to solve this problem, hinge rods are added between the bending rods and the transplanting cylinder cover, which are respectively hinged to the ends of the bending rods and the transplanting cylinder cover, to increase the maximum opening of the transplanting cylinder cover.

[0005] However, this setup introduces a new problem: when the bending rod rotates, driving the hinge rod and causing the transplanting cylinder cover to open, a "dead point" occurs when the three hinge points between the bending rod, the hinge rod, and the transplanting cylinder cover are aligned. At this point, the servo motor's output torque cannot be effectively coupled to the transplanting cylinder cover. When the servo motor outputs torque to the transplanting cylinder cover, the vibration loaded on the hinge rod is also relatively large. Furthermore, when the hinge rod rotates, due to the error in the hinge fit, the extension direction of the hinge rod and the torque coupling direction are inconsistent, making the hinge rod more prone to bending or even breaking during frequent use. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an improved opening mechanism for the transplanting tube, which can eliminate "dead points" in the mechanism, thereby significantly increasing the maximum opening of the transplanting tube cover and reducing the vibration loaded on the hinge rod.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An improved opening mechanism for a transplanting cylinder is disclosed. The transplanting cylinder is hollow and vertically arranged, with an openable and closable transplanting cylinder cover hinged to its lower end. The hinge opening axis of the transplanting cylinder cover is used as the opening hinge axis. The mechanism comprises: a drive servo motor, vertically positioned above the transplanting cylinder cover, with its output shaft parallel to the opening hinge axis; and a drive crank arm, positioned on the output shaft of the drive servo motor. The drive crank arm forms a lever mechanism in a vertical plane based on its hinge point, and the drive crank arm forms a proximal drive arm and a distal drive arm based on its hinge point. The arm comprises a proximal drive arm having a proximal drive end that is horizontally close to the transplanting cylinder, and a distal drive arm having a distal drive end that is horizontally away from the transplanting cylinder. A proximal hinge rod has one end hinged to the proximal drive end and the other end hinged to a hinge support on the transplanting cylinder cover. A distal hinge chain has one end hinged to the distal drive end and the other end hinged to the hinge support. The distal hinge chain includes a first hinge rod and a second hinge rod that are sequentially hinged at their ends. The sum of the scalar values ​​of the proximal hinge rod and the proximal drive arm is greater than the sum of the scalar values ​​of the first hinge rod, the second hinge rod, and the distal drive arm.

[0008] Preferably, the proximal hinge, the first hinge, and the second hinge each include a straight screw and a pair of fisheye bearing connecting end rods, with the pair of fisheye bearing connecting end rods threadedly connected to both ends of the straight screw. Preferably, the extension length of the proximal drive arm is less than the extension length of the distal drive arm. Preferably, the number of improved opening mechanisms for the transplanting cylinder corresponds to the number of transplanting cylinder caps, both being two. When the two drive servos rotate synchronously and in opposite directions, the two transplanter caps rotate in opposite hinges relative to the transplanter, thus opening the transplanter outward through its lower end.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. The improved opening mechanism of the transplanting cylinder of this utility model includes a drive servo, a drive crank arm, a proximal hinge, and a distal hinge chain. The drive servo is located above the transplanting cylinder cover, and the drive crank arm is located on the output shaft of the drive servo. The drive crank arm forms a lever mechanism in a vertical plane. Based on its own hinge point, the drive crank arm forms a proximal drive arm and a distal drive arm. The proximal drive arm has a proximal drive end, and the distal drive arm has a distal drive end. The two ends of the proximal hinge are respectively hinged to the proximal drive end and the transplanting cylinder cover. The two ends of the distal hinge chain are respectively hinged to the distal drive end and the transplanting cylinder cover. The distal hinge chain includes a first hinge rod and a second hinge rod that are hinged sequentially at their ends. The proximal hinge rod and the proximal drive arm are marked with... The sum of the quantities is greater than the sum of the scalar quantities of the first hinge, the second hinge, and the distal drive arm. Thus, the proximal drive arm, the distal drive arm, the proximal hinge, the first hinge, and the second hinge constitute two opening chains for driving the opening of the transplanter cover. The two opening chains are hinged to each other and rotate in opposite directions through the drive crank arm. This significantly reduces the vibration of the drive servo motor loaded on the opening chains. Furthermore, since the length of each opening chain is different, when the hinge point of one opening chain is straight, the hinge point of the other opening chain is not straight. Therefore, this invention can eliminate the occurrence of "dead points" in the mechanism, thereby greatly increasing the maximum opening degree of the transplanter cover and reducing the vibration loaded on the hinge.

[0010] 2. Because the proximal hinge, the first hinge, and the second hinge of this utility model all include a straight screw and a pair of fish-eye bearing connecting rods, and the pair of fish-eye bearing connecting rods are respectively threaded to both ends of the straight screw, that is, the hinge point formed by the fish-eye bearing has better self-centering and compensation performance, the extension direction of the proximal hinge, the first hinge, and the second hinge of this utility model can maintain the same straight line in the torque coupling direction, so that each hinge is not easy to bend or break. Attached Figure Description

[0011] Figure 1 This is a schematic diagram showing the cooperation between the improved opening mechanism of the transplanting cylinder and the transplanting cylinder cover in an embodiment of this utility model (transplanting cylinder cover closed state). Figure 2 This is a schematic diagram showing the cooperation between the improved opening mechanism of the transplanting cylinder and the transplanting cylinder cover in an embodiment of this utility model (transplanting cylinder cover open state).

[0012] In the diagram: 100, Improved opening mechanism of transplanting cylinder; T, Transplanting cylinder; C, Transplanting cylinder cover; 1, Drive servo motor; 2, Drive crank arm; 21, Proximal drive arm; 21a, Proximal drive end; 22, Distant drive arm; 22a, Distant drive end; 3, Proximal hinge; 4, Distant hinge chain; 41, First hinge; 42, Second hinge; R, Hinge seat; 411, Straight screw; 412, Fisheye bearing connecting rod. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the improved opening mechanism of the transplanting cylinder of this utility model. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation of this utility model.

[0014] In this embodiment, the transplanting cylinder T is hollow and vertically arranged, and the lower end is hinged to a transplanting cylinder cover C that can be opened and closed. The hinge opening axis of the transplanting cylinder cover is used as the opening hinge axis (not shown in the attached figure). like Figure 1 and Figure 2 As shown, the improved opening mechanism 100 of the transplanting tube includes a drive servo motor 1, a drive crank arm 2, a proximal hinge 3, and a distal hinge chain 4. Specifically, the improved opening mechanism 100 of the transplanting tube.

[0015] The number of improved opening mechanisms 100 for the transplanting tube corresponds to the number of transplanting tube caps C, both being two.

[0016] The drive servo motor 1 is vertically positioned above the transplanting cylinder cover C. The output shaft of the drive servo motor 1 is parallel to the opening hinge shaft. Specifically, there are two drive servo motors 1, which are fixed to the outer peripheral surfaces of opposite sides of the transplanting cylinder T by brackets.

[0017] The drive crank arm 2 is mounted on the output shaft of the drive servo motor 1, and the drive crank arm 2 forms a lever mechanism in the vertical plane based on its own hinge point. The drive crank arm 2 forms a proximal drive arm 21 and a distal drive arm 22 based on its own hinge point. The proximal drive arm 21 has a proximal drive end 21a that is close to the transplanting cylinder T in the horizontal direction, and the distal drive arm 22 has a distal drive end 22a that is far away from the transplanting cylinder in the horizontal direction. The extension length of the proximal drive arm 21 is less than the extension length of the distal drive arm 22.

[0018] One end of the proximal hinge rod 3 is hinged to the proximal drive end 21a, and the other end is hinged to the hinge support R on the transplanting cylinder cover C.

[0019] One end of the distal hinge chain 4 is hinged to the remote drive end 22a, and the other end is hinged to the hinge support R. The distal hinge chain 4 includes a first hinge rod 41 and a second hinge rod 42 that are hinged to each other in sequence.

[0020] The proximal hinge 3, the first hinge 41, and the second hinge 42 are fisheye bearing connecting rods. Each fisheye bearing connecting rod includes a straight screw 411 and a pair of fisheye bearing connecting end rods 412. The pair of fisheye bearing connecting end rods 412 are threaded to both ends of the straight screw 411.

[0021] The sum of the scalar values ​​of the proximal hinge 3 and the proximal drive arm 21 is greater than the sum of the scalar values ​​of the first hinge 41, the second hinge 42, and the distal drive arm 22. Therefore, when the proximal hinge 3 and the proximal drive arm 21 extend in a straight line, the first hinge 41, the second hinge 42, and the distal drive arm 22 cannot extend in a straight line. Conversely, when the first hinge 41, the second hinge 42, and the distal drive arm 22 extend in a straight line, the proximal hinge 3 and the proximal drive arm 21 cannot extend in a straight line.

[0022] When the two drive servos 1 rotate synchronously and in opposite directions, the two transplanter caps C open by hinged rotation relative to the transplanter T, thereby opening the transplanter T outward through its lower end.

[0023] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art within the scope of the appended claims without creative effort are still within the scope of protection of this patent.

Claims

1. An improved opening mechanism for a transplanting cylinder, wherein the transplanting cylinder is hollow and vertically arranged, and an openable and closable transplanting cylinder cover is hinged to its lower end, wherein the hinge opening axis of the transplanting cylinder cover is used as the opening hinge axis, characterized in that, include: A drive servo motor is vertically positioned above the transplanting cylinder cover, and the output shaft of the drive servo motor is parallel to the opening hinge shaft. A drive crank arm is disposed on the output shaft of the drive servo motor, and the drive crank arm forms a lever mechanism in a vertical plane based on its own hinge point. The drive crank arm forms a proximal drive arm and a distal drive arm based on its own hinge point. The proximal drive arm has a proximal drive end that is horizontally closer to the transplanting cylinder, and the distal drive arm has a distal drive end that is horizontally farther away from the transplanting cylinder. The proximal hinge rod has one end hinged to the proximal drive end and the other end hinged to the hinge support on the transplanting cylinder cover. A distal hinge chain, one end of which is hinged to the distal drive end, and the other end of which is hinged to the hinge support, the distal hinge chain comprising a first hinge rod and a second hinge rod that are sequentially hinged at their ends. Wherein, the sum of the scalars of the proximal hinge and the proximal drive arm is greater than the sum of the scalars of the first hinge, the second hinge, and the distal drive arm.

2. The improved opening mechanism of the transplanting cylinder according to claim 1, characterized in that: in, The proximal hinge, the first hinge, and the second hinge each include a straight screw and a pair of fisheye bearing connecting rods, the pair of fisheye bearing connecting rods being threaded to both ends of the straight screw.

3. The improved opening mechanism of the transplanting cylinder according to claim 1, characterized in that: in, The extension length of the proximal drive arm is less than the extension length of the distal drive arm.

4. The improved opening mechanism of the transplanting cylinder according to claim 1, characterized in that: in, The number of improved opening mechanisms for the transplanting cylinder corresponds to the number of transplanting cylinder caps, both being two. When the two drive servos rotate synchronously and in opposite directions, the two transplanter caps rotate in opposite hinges relative to the transplanter, thereby opening the transplanter outward through its lower end.

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