Fixed cylinder type seedling taking mechanism

Abstract

The utility model discloses a fixed cylinder type seedling taking mechanism which comprises a seedling clamp mounting rod fixing disc, seedling clamp mounting rods, seedling clamps, fixing pins, a fixed cylinder and a fixed shaft, and annular grooves are uniformly distributed in the fixed cylinder; the annular groove comprises a wide groove section, a narrow groove section, a first transition part and a second transition part; seedling clamp mounting rod fixing discs are rotationally arranged at the two ends of the fixing shaft respectively, a plurality of seedling clamp mounting rods are annularly distributed between the two seedling clamp mounting rod fixing discs, each seedling clamp mounting rod is provided with a seedling clamp, each seedling clamp corresponds to one annular groove, and the seedling clamps are spirally distributed around the fixing cylinder; the seedling clamp comprises two clamping pieces, a spring is arranged between the two clamping pieces, and balls are installed at the ends, away from the clamping end, of the two clamping pieces respectively. The spiral seedling taking device is compact in structure, adopts spiral continuous seedling taking, is simple in motion trail, reduces production cost, does not damage seedlings under the condition of effectively clamping the seedlings, saves manufacturing cost, can take 14 seedlings in a single circle, and improves seedling taking efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of planting equipment, in particular to a fixed cylinder type seedling picking mechanism. Background Art

[0002] As an important cultivation technique, plug seedling transplanting is regarded as one of the key means to improve the yield per unit area of crops. The efficient operation of a transplanter depends on accurate seedling picking.

[0003] The known patent publication number CN115462225B discloses a cam-link planetary gear train plug seedling picking mechanism. The sun gear and the cam have the same center and are both fixed on the central shaft through bearings. The axis of the column on the frame fixing plate and the axis of the central shaft are on the same horizontal line. One end of the column is hinged to one end of the first link and the second link. The other end of the first link is hinged to the roller shaft. A torsion spring is wound around the column and one end is fixed on the frame fixing plate, and the other end of the torsion spring is fixed to the first link, so that the roller is always in contact with the surface of the cam by the force of the torsion spring; the sun gear is fixed to the eccentric disc by bolts, the eccentric disc is fixed to the eccentric shaft by threads, and the fixing angle of the eccentric shaft can be adjusted through the notch fixed to the sun gear on the eccentric disc; the other end of the eccentric shaft is hinged to the third link, and the other end of the third link is hinged to the other end of the second link. The cam-link mechanism drives the sun gear to rotate to drive the planetary gear to rotate at a variable speed, so that the trajectory formed by the tip of the seedling picking needle meets the agronomic requirements of plug seedling transplanting. However, this seedling picking mechanism picks 2 seedlings per single circle and needs to achieve a complex seedling picking movement trajectory. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the utility model provides a fixed cylinder type seedling picking mechanism.

[0005] The technical solution adopted by the utility model to solve the above problems is as follows:

[0006] A fixed cylinder type seedling picking mechanism, comprising a seedling clip mounting rod fixing disk, a seedling clip mounting rod, a seedling clip, a fixing pin, a fixed cylinder and a fixed shaft. The fixed cylinder is evenly provided with annular grooves;

[0007] The annular grooves include a wide groove section, a narrow groove section, a first transition part and a second transition part;

[0008] The fixed cylinder is installed on the fixed shaft, and seedling clip mounting rod fixing disks are respectively rotatably provided at both ends of the fixed shaft. A plurality of seedling clip mounting rods are annularly distributed between the two seedling clip mounting rod fixing disks. Seedling clips are respectively provided on each seedling clip mounting rod. Each seedling clip corresponds to an annular groove, and the seedling clips are arranged in a spiral layout around the fixed cylinder;

[0009] The seedling clamp comprises two clamping pieces, each of which is provided with a clearance groove for the seedling clamp mounting rod to pass through, the two clamping pieces are hinged and fixed on the seedling clamp mounting rod through a fixing pin, a spring is provided between the two clamping pieces, and balls contacting the two inner side walls of the annular groove are respectively installed at one end of the two clamping pieces away from the clamping end;

[0010] When the seedling clamp is in the wide groove section, the seedling clamp is in a closed state;

[0011] When the seedling clamp is in the narrow groove section, the seedling clamp is in an open state;

[0012] In the process of the seedling clamp transitioning from the wide groove section to the narrow groove section through the second transition portion, the seedling clamp gradually opens;

[0013] In the process that the seedling clamp transitions from the narrow groove section to the wide groove section through the first transition portion, the seedling clamp gradually closes.

[0014] Furthermore, an intermediate fixing plate is provided between the two seedling clamp mounting rod fixing plates.

[0015] Furthermore, a threaded hole is provided at one end of the clip away from the clamping end, and the ball is connected to the threaded hole by a plug bolt.

[0016] Furthermore, an elastic buffer layer is provided on the clamping surfaces of the two clamping pieces. Beneficial Effects

[0017] The utility model has a compact structure, adopts spiral continuous seedling taking, has a simple motion track, reduces production cost, does not damage the seedlings while effectively clamping the seedlings, saves manufacturing cost, can take 14 seedlings in a single circle, and improves seedling taking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the seedling clamp in a preferred embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the cooperation between the seedling clip and the annular groove in a preferred embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fixed cylinder in a preferred embodiment of the utility model;

[0022] Seedling clamp mounting rod fixing plate 1; seedling clamp mounting rod 2; seedling clamp 3; fixing pin 4; middle fixing plate 5; fixing cylinder 6; bearing seat 7; fixing shaft 8; clip 301; plug bolt 302; ball 303; spring 304; wide groove section 601; first transition part 602; narrow groove section 603; second transition part 604. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0024] Example 1, see Figures 1 to 4 As shown, a fixed cylinder type seedling taking mechanism comprises a seedling clamp mounting rod fixing plate 1, a seedling clamp mounting rod 2, a seedling clamp 3, a fixing pin 4, a fixing cylinder 6 and a fixing shaft 8, wherein 28 annular grooves are evenly distributed on the fixing cylinder 6; the annular grooves comprise a wide groove section 601, a narrow groove section 603, a first transition portion 602 and a second transition portion 604;

[0025] The fixed cylinder 6 is installed on the fixed shaft 8, and the fixed shaft 8 can be fixedly installed on the external frame. The two ends of the fixed shaft 8 are rotatably installed with the seedling clamp mounting rod fixing disk 1 through the bearing seat 7. There are 14 seedling clamp mounting rods 2 distributed in an annular shape between the two seedling clamp mounting rod fixing disks 1. Two seedling clamps 3 are respectively arranged on each seedling clamp mounting rod 2. Each seedling clamp 3 corresponds to an annular groove. The seedling clamps 3 are arranged in a spiral around the fixed cylinder 6.

[0026] The seedling clamp 3 includes two clips 301, the clips 301 are provided with a clearance groove for the seedling clamp mounting rod 2 to pass through, the two clips 301 are respectively provided with hinged ears, the two hinged ears are hinged and fixed to the seedling clamp mounting rod 2 through a fixing pin 4, the two clips 301 can rotate around the fixing pin 4, a spring 304 is provided between the two clips 301, and the ends of the two clips 301 away from the clamping end are respectively provided with balls 303 in contact with the two inner side walls of the annular groove; specifically, the ends of the clips 301 away from the clamping end are provided with threaded holes, and the balls 303 are connected to the threaded holes by plugging bolts 302. Preferably, an elastic buffer layer is provided on the clamping surfaces of the two clips 301 to prevent damage to the seedlings in the pot;

[0027] When the seedling clamp 3 is in the wide groove section 601, the seedling clamp 3 is in a closed state;

[0028] When the seedling clamp 3 is in the narrow groove section 603, the seedling clamp 3 is in an open state;

[0029] In the process of the seedling clamp 3 transitioning from the wide groove section 601 to the narrow groove section 603 through the second transition portion 604, the seedling clamp gradually opens;

[0030] In the process that the seedling clamp 3 transitions from the narrow groove section 603 to the wide groove section 601 through the first transition portion 602, the seedling clamp gradually closes.

[0031] In this embodiment, an intermediate fixing plate 5 is further provided between the two seedling clamp mounting rod fixing plates 1, and the intermediate fixing plate 5 can play a role in strengthening the connection rigidity of the seedling clamp mounting rod and strengthening the stability of the overall structure.

[0032] The utility model seedling taking process:

[0033] The fixing disc 1 of the seedling clip mounting rod is driven to rotate by external power. For example, a sprocket can be installed on the outer side of the fixing disc 1 of the seedling clip mounting rod and connected to the external power through a chain. The fixed cylinder 6 remains stationary when the fixing disc 1 of the seedling clip mounting rod rotates. The fixing disc 1 of the seedling clip mounting rod drives the seedling clip 3 to rotate, realizing the rotary motion of the seedling clip. The ball 303 of the seedling clip 3 contacts the inner walls of both sides of the annular groove under the action of the spring 304. When the seedling clip 3 rotates from the narrow groove section 603 to the wide groove section 601 (i.e., the seedling clip 3 moves to the seedling taking position), the seedling clip closes to clamp the pot seedlings. When the seedling clip 3 rotates into the wide groove section 601, the seedling clip 3 closes to transport the pot seedlings. When the seedling clip 3 rotates from the wide groove section 601 to the narrow groove section 603, the seedling clip 3 opens, and the pot seedlings fall from the seedling clip 3, completing one seedling taking operation. The seedling clip 3 continues to rotate to enter the next seedling taking cycle.

Claims

1. A fixed cylinder type seedling picking mechanism, characterized in that, It includes a seedling clamp mounting rod fixing plate, a seedling clamp mounting rod, a seedling clamp, a fixing pin, a fixing cylinder and a fixing shaft, and the fixing cylinder is evenly provided with annular grooves; The annular groove comprises a wide groove section, a narrow groove section, a first transition section and a second transition section; The fixed cylinder is installed on the fixed shaft, and the two ends of the fixed shaft are respectively rotatably provided with seedling clamp mounting rod fixing plates, and multiple seedling clamp mounting rods are distributed in an annular manner between the two seedling clamp mounting rod fixing plates, and each seedling clamp mounting rod is respectively provided with a seedling clamp, and each seedling clamp corresponds to an annular groove, and the seedling clamps are arranged in a spiral around the fixed cylinder; The seedling clamp comprises two clamping pieces, each of which is provided with a clearance groove for the seedling clamp mounting rod to pass through, the two clamping pieces are hinged and fixed on the seedling clamp mounting rod through a fixing pin, a spring is provided between the two clamping pieces, and balls contacting the two inner side walls of the annular groove are respectively installed at one end of the two clamping pieces away from the clamping end; When the seedling clamp is in the wide groove section, the seedling clamp is in a closed state; When the seedling clamp is in the narrow groove section, the seedling clamp is in an open state; In the process of the seedling clamp transitioning from the wide groove section to the narrow groove section through the second transition portion, the seedling clamp gradually opens; In the process that the seedling clamp transitions from the narrow groove section to the wide groove section through the first transition portion, the seedling clamp gradually closes.

2. The fixed cylinder type seedling taking mechanism according to claim 1, wherein, An intermediate fixing plate is also arranged between the two seedling clamp mounting rod fixing plates.

3. The fixed cylinder type seedling picking mechanism according to claim 1, characterized in that, A threaded hole is arranged at one end of the clip away from the clamping end, and the ball is connected to the threaded hole through a plug bolt.

4. A fixed cylinder type seedling picking mechanism according to claim 1, wherein An elastic buffer layer is arranged on the clamping surfaces of the two clamping pieces.

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