Seedling centralizer for navel orange planting

Abstract

The invention discloses a seedling centralizer for navel orange planting, and relates to the technical field of seedling centralizers, the seedling centralizer comprises a supporting rod, a connecting ring and a lantern ring, the lower end of the supporting rod is used for being inserted in a field, the connecting ring is adjustably and slidably arranged at the upper end of the supporting rod, and the lantern ring is assembled and connected with the side wall of the connecting ring; the two lantern rings are symmetrically arranged and are of a semi-ring structure, one ends of the two lantern rings are rotationally connected, an adjusting mechanism is detachably arranged between the other ends of the two lantern rings, the adjusting mechanism comprises end frames, a toothed plate, a hinge strip and a fixing plate, and the two end frames are assembled and connected with the end faces of the two lantern rings respectively. Seedling branches penetrate between the two lantern rings from the notches, the two end frames on the adjusting mechanism are clamped with the end faces of the lantern rings at the notches in a sliding mode, installation limiting is achieved, it is guaranteed that seedlings cannot fall off in the lantern rings, supporting of the supporting rods is matched, the seedlings are in a vertical state, it is guaranteed that the seedlings grow vertically, installation operation is easy, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of seedling centralizers, in particular to a seedling centralizer for navel orange planting. Background Art

[0002] Navel orange is a fruit that is rich in nutrition and tastes great. If the trunk of a navel orange tree is crooked during its growth as a seedling, it is easy to cause the trunk to break when the fruit is produced later, causing economic losses. Therefore, the seedlings need to be straightened during the seedling period.

[0003] Such as a seedling straightener for planting navel oranges as described in "CN116671384A". The present invention provides a seedling straightener for planting navel oranges, which can provide support in soft soil and improve the stability of seedling straightening. A seedling straightener for planting navel oranges, comprising a support column and a first support frame, wherein the left and right sides of the middle and rear parts of the front support column are connected to the support column on the rear side through the first support frame; and a hinge, wherein the rear part of the first support frame on the left side is connected to the support column on the left rear side through a hinge. The present invention uses the first support frame, the second support frame and the third support frame to cooperate with the support column to surround the seedlings for framing and supporting the seedlings, and then moves the first straightening plate inward to straighten the seedlings, and at the same time pushes the block downward to open the fixed claws, thereby increasing the support range of the fixed claws and improving the stability of the support column, thereby improving the straightening effect on the seedlings;

[0004] However, in the prior art, as shown in the above patent, although it can have a good straightening effect on navel orange seedlings, the installation steps are relatively complicated, which is not conducive to the straightening operation of batches of seedlings. For example, in the prior art, wooden sticks are usually inserted directly into the soil, and the branches of the seedlings are tied to the wooden sticks with ropes. The ropes are relatively thin, and the seedlings are easily strangled during the growth process, affecting the growth of the seedlings. Summary of the invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] The purpose of the invention is to solve the problem in the prior art that the installation operation during straightening is complicated and is not conducive to the straightening operation of batches of seedlings.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] On the one hand, the present invention provides a seedling straightener for planting navel orange, which comprises a support rod, a connecting ring and a sleeve ring, wherein the lower end of the support rod is used to be inserted in a field, the connecting ring is adjustable and slidably arranged at the upper end of the support rod, the sleeve ring is assembled and connected with the side wall of the connecting ring, the sleeve ring is symmetrically provided with two and is arranged in a semi-ring structure, one end of the two sleeve rings is rotatably connected, and an adjustment mechanism is detachably provided between the other ends, the adjustment mechanism comprises an end frame, a tooth plate, a hinge bar and a fixed plate, the end frame is provided with two and is respectively assembled and connected with the end faces of the two sleeve rings, the two ends of the fixed plate are respectively engaged and slidably arranged with the two end frames, the tooth plate is adjustable and slidably penetrated at the center position of the fixed plate, the hinge bar is provided with two groups and is symmetrically arranged on both sides of the inner end of the tooth plate, the two ends of the hinge bar are respectively hinged with one end of the tooth plate and the end frame, the two groups of hinge bars are arranged in linkage, a plurality of assembly grooves are evenly arranged inside the sleeve ring, a fixing pipe is arranged in the assembly groove, and a push rod is arranged in the fixing pipe through a spring.

[0009] Furthermore, the tooth plate is provided with an end plate at one end thereof, and each group of the hinged strips is provided with two hinged strips symmetrically arranged at both ends of the end plate, and gears are respectively rotated and meshed with each other on both sides of the end faces of the end plates, and the gears are assembled and connected with the hinged strips. Since the length of each group of hinged strips is the same and under the action of the two meshing gears, the end plate is always located at the center position of the two end frames, so that the sliding distances of the two ends of the fixed plate when sliding with the two end frames are the same, and the fixed plate is also always located at the center position of the two end frames. By pushing or pulling the tooth plate, the two groups of hinged strips can be synchronously expanded or retracted, driving the two rings to rotate, close or expand, thereby realizing the adjustment of the diameter.

[0010] Furthermore, the fixed plate is provided with a pressure plate on one outer side, and a rack is provided on one end of the pressure plate away from the fixed plate, and the rack is meshed with the toothed plate. A handle is provided on the end of the rack away from the fixed plate. In an initial state, the pressure plate is inclined toward the toothed plate, so that the rack squeezes the side wall of the toothed plate to achieve meshing. Since the rack and the fixed plate are fixedly arranged, the toothed plate cannot slide after meshing, thereby achieving a positioning effect. When adjustment operation is required, the handle is held and pulled in the direction away from the toothed plate to drive the rack to separate from the toothed plate. At this time, the toothed plate can be pushed or pulled to achieve adjustment, and the hand can be released after the adjustment is completed. The operation is simple and convenient to use.

[0011] Furthermore, the end frame is arranged in an L-shaped structure, the inner side surface of the end frame is slidably engaged with the end surface and the outer side surface of the ring, a sliding groove is provided above the end surface of the ring, and the inner side surface of the end frame is provided with a sliding bar slidably engaged with the sliding groove. Through the engaging and sliding arrangement of the sliding groove and the sliding bar, when installing the adjustment mechanism, it is only necessary to slide the two end frames on the adjustment mechanism and the two ends of the ring, and the installation and disassembly operations are simple.

[0012] Furthermore, the center position of the outer wall of one of the rings is assembled and connected to the outer wall of the connecting ring, and one end of the ring is rotatably connected to one end of the other ring. Through the rotational connection of the two rings, it is convenient to adjust the distance between the two rings, or the ring is set on the branches of the seedlings, and the center position of one ring is assembled and connected to the connecting ring, so that when the ring straightens the branches of the seedlings, the supporting pressure on the branches of the seedlings at the center position of the ring is the largest, and the push rod at the center of the ring is more evenly distributed, which can achieve flexible support for the branches of the seedlings.

[0013] Furthermore, a buffer pad is provided at the inner edge of the ring, and the push rod is arranged inside the buffer pad. The buffer pad can, on the one hand, avoid contamination of the push rod arranged inside, and on the other hand, increase the contact area between the push rod and the seedling branches and trunks, reduce local pressure, and avoid damage to the seedlings.

[0014] Furthermore, a support ring is provided on the side wall of the lower end of the support rod for sliding and rotating, and legs are hingedly provided at the lower sides of the support ring. A fixing ring is provided on the side of the support ring away from the sleeve ring, and a ground nail is slidably inserted into the fixing ring. The ground nail and the outer wall of the lower end of the support rod are provided with barbs. Through the cooperation of the two legs and the ground nail, the stability of the support rod inserted into the soil is guaranteed, and the ground nail and the sleeve ring are always arranged opposite to each other, so that the sleeve ring pulls the seedling branches to straighten them, and the ground nail can further ensure that the support rod will not tilt toward the seedling branches, and the stability of the insertion into the soil is guaranteed by the provided barbs.

[0015] Furthermore, the outer wall of the support rod is provided with an external thread, and the outer wall of the support rod is threadedly connected with a plurality of adjusting members, and the support ring and the connecting ring are respectively slidably limited on the support rod through the corresponding adjusting members.

[0016] Furthermore, the adjusting member includes a nut and an anti-skid pad threadedly connected to the external thread, the anti-skid pad is arranged on the side of the nut facing the support ring and the connecting ring, and when the height of the support ring or the connecting ring on the support rod is adjusted, the nut is rotated. Since the nut is threadedly connected to the support rod, the height of the nut on the support rod can be adjusted, and the support ring and the connecting ring are only slidably mounted on the support rod, and when the adjusting member moves up and down, the support ring and the connecting ring can be driven to move up and down for adjustment, wherein the adjusting member can be symmetrically arranged at the upper and lower ends of the support ring or the connecting ring, and is squeezed by the anti-skid pads arranged up and down to ensure the stability of the support ring and the connecting ring.

[0017] Furthermore, U-shaped clips are symmetrically provided on both sides of the nut located below the support ring, and the U-shaped clips are engaged with the bottom of the legs. When the device is not applicable, the connecting ring can be moved upwards, and the two legs can be rotated close to the U-shaped clips and finally engaged with the U-shaped clips to achieve positioning, thereby facilitating the carrying and transfer of the support rod.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention inserts the support rod into the soil on the opposite side of the tilted direction of the navel orange seedling, moves the support ring downward, and inserts the legs and the ground nails into the soil respectively to ensure the stability of the support rod. First, manually straighten the seedling close to the ring, rotate and unfold one ring to form a gap between the two rings, insert the seedling branches through the gap between the two rings, slide and engage the two end frames on the adjustment mechanism with the end faces of the ring at the gap to achieve installation limit, ensure that the seedling will not fall off in the ring, cooperate with the support of the support rod to make the seedling in a vertical state, and ensure the upright growth of the seedling.

[0020] 2. The present invention evenly arranges a large number of push rods in the ring, so that the branches of the seedlings have a certain range of movement in the ring, and the branches of the seedlings with different thicknesses in a small range can be stably clamped. If some branches are thicker, the handle can be held and pulled away from the tooth plate to drive the rack to separate from the tooth plate. At this time, the tooth plate can be pushed or pulled to achieve adjustment, and the handle can be released after the adjustment is completed.

[0021] 3. The present invention can adjust the height of the collar by moving the adjusting member up and down on the support rod, which makes it easy to find the most suitable position for installing the collar on the branches of the seedlings and avoid affecting the growth of the seedlings.

[0022] 4. The present invention adopts the engaging and sliding arrangement of the slide groove and the slide bar, so that when installing the adjustment mechanism, it is only necessary to slide and engage the two end frames on the adjustment mechanism with the two ends of the collar, and the installation and disassembly operations are simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of a seedling centralizer for navel orange planting provided by the present invention;

[0025] Figure 2 A schematic diagram of a folded state of the legs of a seedling centralizer for planting navel oranges provided by the present invention;

[0026] Figure 3 A schematic diagram of the positions of the adjusting member and the collar of a seedling centralizer for planting navel orange provided by the present invention;

[0027] Figure 4 A schematic diagram of the assembly of a collar and an adjustment mechanism of a seedling straightener for navel orange planting provided by the present invention;

[0028] Figure 5 A schematic diagram of the internal structure of a collar of a seedling centralizer for planting navel orange provided by the present invention;

[0029] Figure 6 A schematic diagram of a sleeve ring of a seedling straightener for planting navel orange provided by the present invention;

[0030] Figure 7 A schematic diagram of the assembly of a fixing tube and a push rod of a seedling centralizer for navel orange planting provided by the present invention;

[0031] Figure 8 A schematic diagram of an adjustment mechanism of a seedling straightener for navel orange planting provided by the present invention;

[0032] Fig. 9 A schematic diagram of the assembly of a tooth plate and an end plate of a seedling straightener for navel orange planting provided by the present invention.

[0033] Legend:

[0034] 1. Support rod; 2. Connecting ring; 3. Ring; 411. End frame; 412. Tooth plate; 413. Hinge strip; 414. Fixing plate; 511. Assembly groove; 512. Fixing tube; 513. Spring; 514. Push rod; 611. End plate; 612. Gear; 711. Pressure plate; 712. Rack; 713. Handle; 811. Slide groove; 812. Slide strip; 9. Buffer pad; 101. Support ring; 102. Leg; 103. Fixing ring; 104. Ground nail; 105. Barb; 11. Adjustment piece; 111. Nut; 112. Anti-slip pad; 12. U-shaped clamp. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, as referred to herein, "one embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0038] See also Figure 1-Figure 9 The present invention provides a technical solution: a seedling straightener for planting navel orange, comprising a support rod 1, a connecting ring 2 and a sleeve ring 3, wherein the lower end of the support rod 1 is used for being inserted into a field, the connecting ring 2 is adjustable and slidably arranged at the upper end of the support rod 1, the sleeve ring 3 is assembled and connected with the side wall of the connecting ring 2, the sleeve ring 3 is symmetrically provided with two and is arranged in a semi-ring structure, one end of the two sleeve rings 3 is rotatably connected, and the other end is detachably provided with an adjustment mechanism, the adjustment mechanism comprises an end frame 411, a tooth plate 412, a hinge bar 413 and a fixing plate 414, the end frame 411 is provided with two and is respectively mounted with the end faces of the two sleeve rings 3 The two ends of the fixed plate 414 are respectively engaged with the two end frames 411 for sliding, the tooth plate 412 is adjustable and slidably penetrates the center of the fixed plate 414, and two groups of hinged strips 413 are symmetrically arranged on both sides of the tooth plate 412 arranged on the inner side of the fixed plate 414. The two ends of the hinged strip 413 are respectively hinged to one end of the tooth plate 412 and the end frame 411, and the two groups of hinged strips 413 are linked together. A plurality of assembly grooves 511 are evenly arranged inside the ring 3, a fixed tube 512 is arranged in the assembly groove 511, and a push rod 514 is arranged in the fixed tube 512 through a spring 513.

[0039] like Figure 1-Figure 9 As shown, the tooth plate 412 is provided with an end plate 611 at one end thereof, and each set of hinged bars 413 is provided with two and symmetrically arranged at both ends of the end plate 611, and the gears 612 respectively rotate and mesh with each other on both sides of the end surface of the end plate 611, and the gears 612 are assembled and connected with the hinged bars 413. Since each set of hinged bars 413 has the same length and under the action of the two meshing gears 612, the end plate 611 is always located at the center position of the two end frames 411, so that the sliding distances of the two ends of the fixed plate 414 and the two end frames 411 are the same, and the fixed plate 414 is also always located at the center position of the two end frames 411. By pushing or pulling the tooth plate 412, the two sets of hinged bars 413 can be synchronously expanded or retracted, driving the two rings 3 to rotate, close or expand, and realize the adjustment of the diameter.

[0040] like Figure 1-Figure 9As shown, a pressure plate 711 is fixedly provided on the outer side of the fixing plate 414, and a rack 712 is provided on the end of the pressure plate 711 away from the fixing plate 414, and the rack 712 meshes with the tooth plate 412, and a handle 713 is provided on the end of the rack 712 away from the fixing plate 414. In the initial state, the pressure plate 711 is tilted toward the tooth plate 412, so that the rack 712 squeezes the side wall of the tooth plate 412 to achieve meshing. Since the rack 712 and the fixing plate 414 are fixedly arranged, when meshed, the tooth plate 412 cannot slide, thereby achieving a positioning effect. When adjustment operation is required, the handle 713 is held and pulled in the direction away from the tooth plate 412 to drive the rack 712 to separate from the tooth plate 412. At this time, the tooth plate 412 can be pushed or pulled to achieve adjustment, and the hand can be released after the adjustment is completed. The operation is simple and convenient.

[0041] like Figure 1-Figure 9 As shown, the end frame 411 is arranged in an L-shaped structure, and the inner side surface of the end frame 411 is slidably engaged with the end surface and the outer side surface of the ring 3. A sliding groove 811 is provided above the end surface of the ring 3, and a sliding bar 812 is provided on the inner side surface of the end frame 411 to slide and engage with the sliding groove 811. Through the engagement and sliding arrangement of the sliding groove 811 and the sliding bar 812, when installing the adjustment mechanism, it is only necessary to slide the two end frames 411 on the adjustment mechanism and the two ends of the ring 3, and the installation and disassembly operations are simple.

[0042] like Figure 1-Figure 9 As shown, the center position of the outer wall of a ring 3 is assembled and connected to the outer wall of the connecting ring 2, and one end of the ring 3 is rotatably connected to one end of another ring 3. Through the rotatable connection of the two rings 3, it is convenient to adjust the distance between the two rings 3, or the ring 3 is set on the branches of the seedlings, and the center position of one ring 3 is assembled and connected to the connecting ring 2, so that when the ring 3 straightens the branches of the seedlings, the supporting pressure of the center position of the ring 3 on the branches of the seedlings is the largest, and the push rod 514 at the center of the ring 3 is more evenly distributed, which can realize flexible support for the branches of the seedlings.

[0043] like Figure 1-Figure 9 As shown, a buffer pad 9 is provided at the inner edge of the ring 3, and the push rod 514 is arranged on the inner side of the buffer pad 9. The buffer pad 9 can, on the one hand, avoid contamination of the push rod 514 arranged therein, and on the other hand, increase the contact area between the push rod 514 and the branches of the seedlings, reduce the local pressure, and avoid damage to the seedlings.

[0044] like Figure 1-Figure 9As shown, a support ring 101 is provided on the side wall of the lower end of the support rod 1 for sliding and rotating. Support legs 102 are hingedly provided at the lower sides of the support ring 101. A fixing ring 103 is provided on the side of the support ring 101 away from the ring 3. A ground nail 104 is slidably inserted into the fixing ring 103. The ground nail 104 and the outer wall of the lower end of the support rod 1 are provided with barbs 105. Through the cooperation of the two supporting legs 102 and the ground nail 104, the stability of the support rod 1 inserted into the soil is guaranteed, and the ground nail 104 and the ring 3 are always arranged opposite to each other, so that the ring 3 pulls the seedling branches to straighten them, and the ground nail 104 can further ensure that the support rod 1 will not tilt toward the seedling branches, and the stability of the insertion into the soil is guaranteed by the barbs 105.

[0045] like Figure 1-Figure 9 As shown, the outer wall of the support rod 1 is provided with an external thread, and a plurality of adjusting members 11 are threadedly connected to the outer wall of the support rod 1 . The support ring 101 and the connecting ring 2 are respectively slidably limited on the support rod 1 by corresponding adjusting members 11 .

[0046] like Figure 1-Figure 9 As shown, the adjusting member 11 includes a nut 111 and an anti-skid pad 112 threadedly connected to the external thread, and the anti-skid pad 112 is arranged on the side of the nut 111 facing the support ring 101 and the connecting ring 2. When the height of the support ring 101 or the connecting ring 2 on the support rod 1 is adjusted, the nut 111 is rotated. Since the nut 111 is threadedly connected to the support rod 1, the height of the nut 111 on the support rod 1 can be adjusted, and the support ring 101 and the connecting ring 2 are only slidably mounted on the support rod 1. When the adjusting member 11 moves up and down, the support ring 101 and the connecting ring 2 can be driven to move up and down for adjustment, wherein the adjusting member 11 can be symmetrically arranged at the upper and lower ends of the support ring 101 or the connecting ring 2, and it is squeezed by the anti-skid pads 112 arranged up and down to ensure the stability of the support ring 101 and the connecting ring 2.

[0047] like Figure 1-Figure 9 As shown, U-shaped clips 12 are symmetrically provided on both sides of the nut 111 located below the support ring 101, and the U-shaped clips 12 are engaged with the lower part of the support legs 102. When the device is not applicable, the connecting ring 2 can be moved upward, and the two support legs 102 can be rotated close to the U-shaped clips 12 and finally engaged with the U-shaped clips 12 to achieve positioning, so as to facilitate the carrying and transfer of the support rod 1.

[0048] Working principle: when using the straightener, first insert the support rod 1 into the soil on the opposite side of the tilted direction of the navel orange seedling, move the support ring 101 downward, insert the legs 102 and the ground nails 104 into the soil respectively to ensure the stability of the support rod 1, first manually straighten the seedling close to the ring 3, rotate and unfold one ring 3 to create a gap between the two rings 3, pass the seedling branches through the gap between the two rings 3, slide and engage the two end frames 411 on the adjustment mechanism with the end faces of the ring 3 at the gap to achieve installation limit, ensure that the seedling will not fall off in the ring 3, cooperate with the support of the support rod 1, so that the seedling is in a vertical state, ensuring the upright growth of the seedling, because the height at which the ring 3 can be installed for each seedling is different By moving the adjusting member 11 up and down on the support rod 1, the height of the collar 3 can be adjusted, which makes it easy to find the most suitable position for installing the collar 3 on the seedling branch to avoid affecting the growth of the seedling. Since the thickness of each seedling branch is different, more push rods 514 are evenly arranged in the collar 3, so that the seedling branches have a certain range of movement in the collar 3, so that the seedling branches of different thicknesses in a small range can be stably clamped. If some branches are thicker, the handle 713 can be held and pulled away from the tooth plate 412 to drive the rack 712 to separate from the tooth plate 412. At this time, the tooth plate 412 can be pushed or pulled to achieve adjustment, and the hand can be released after the adjustment is completed.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A seedling straightener for navel orange planting, characterized in that: The invention comprises a support rod (1), a connecting ring (2) and a sleeve ring (3), wherein the lower end of the support rod (1) is used for being inserted into a field, the connecting ring (2) is adjustable and slidably arranged on the upper end of the support rod (1), the sleeve ring (3) is assembled and connected with the side wall of the connecting ring (2), the sleeve ring (3) is symmetrically provided with two sleeve rings (3) and is arranged in a semi-ring structure, one end of the two sleeve rings (3) is rotatably connected, and an adjustment mechanism is detachably provided between the other ends, the adjustment mechanism comprises an end frame (411), a tooth plate (412), a hinge strip (413) and a fixing plate (414), the end frame (411) is provided with two and is respectively assembled and connected with the end faces of the two sleeve rings (3), and the fixing plate (414) is divided into two ends. The toothed plate (412) is slideably engaged with the two end frames (411), and the toothed plate (412) is adjustable and slideably penetrated at the center of the fixed plate (414). The hinged strip (413) is provided with two groups and is symmetrically arranged on both sides of one end of the inner side of the fixed plate (414) where the toothed plate (412) is arranged. The two ends of the hinged strip (413) are respectively hingedly arranged with one end of the toothed plate (412) and the end frame (411). The two groups of hinged strips (413) are linked together. A plurality of assembly grooves (511) are evenly arranged inside the collar (3), and a fixed tube (512) is arranged inside the assembly groove (511). A push rod (514) is arranged inside the fixed tube (512) through a spring (513).

2. A seedling straightener for navel orange planting according to claim 1, characterized in that: The tooth plate (412) is provided with an end plate (611) at one end thereof, and each group of hinge bars (413) is provided with two hinge bars (413) which are symmetrically arranged at both ends of the end plate (611). Gears (612) which are arranged to rotate and mesh with each other are respectively arranged on both sides of the end surface of the end plate (611), and the gears (612) are assembled and connected with the hinge bars (413).

3. A seedling straightener for planting navel orange according to claim 2, characterized in that: The fixing plate (414) is provided with a pressing plate (711) fixedly disposed on an outer surface thereof; a rack (712) is provided at one end of the pressing plate (711) away from the fixing plate (414); the rack (712) is meshed with the toothed plate (412); and a handle (713) is provided at one end of the rack (712) away from the fixing plate (414).

4. A seedling straightener for planting navel orange according to claim 3, characterized in that: The end frame (411) is arranged in an L-shaped structure, the inner side surface of the end frame (411) is slidably engaged with the end surface and the outer side surface of the ring (3), a sliding groove (811) is provided above the end surface of the ring (3), and the inner side surface of the end frame (411) is provided with a sliding bar (812) slidably engaged with the sliding groove (811).

5. The seedling straightener for planting navel orange according to claim 4, characterized in that: The center position of the outer wall of one of the sleeve rings (3) is assembled and connected to the outer wall of the connecting ring (2), and one end of the sleeve ring (3) is rotatably connected to one end of another sleeve ring (3).

6. A seedling straightener for planting navel orange according to claim 5, characterized in that: A buffer pad (9) is provided at the inner edge of the collar (3), and the push rod (514) is arranged on the inner side of the buffer pad (9).

7. The seedling centralizer for planting navel orange according to claim 1, characterized in that: A support ring (101) is slidably and rotatably sleeved on the side wall at the lower end of the support rod (1), and legs (102) are hingedly provided below both sides of the support ring (101). A fixing ring (103) is provided on the side of the support ring (101) away from the sleeve ring (3), and a ground nail (104) is slidably penetrated in the fixing ring (103). Both the ground nail (104) and the outer wall of the lower end of the support rod (1) are provided with barbs (105).

8. The seedling straightener for planting navel orange according to claim 7, characterized in that: The outer wall of the support rod (1) is provided with an external thread, and the outer wall of the support rod (1) is threadedly connected with a plurality of adjusting members (11), and the support ring (101) and the connecting ring (2) are respectively slidably limited on the support rod (1) via the corresponding adjusting members (11).

9. A seedling straightener for planting navel orange according to claim 8, characterized in that: The adjusting member (11) comprises a nut (111) threadedly connected to the external thread and an anti-skid pad (112), wherein the anti-skid pad (112) is arranged on a side of the nut (111) facing the supporting ring (101) and the connecting ring (2).

10. A seedling straightener for planting navel orange according to claim 9, characterized in that: U-shaped clamps (12) are symmetrically arranged on both sides of the nut (111) located below the support ring (101), and the U-shaped clamps (12) are engaged with the bottom of the supporting leg (102).

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