Plant type trimmer for ornamental plants and application of plant type trimmer

Abstract

The invention relates to the technical field of plant trimming, in particular to a plant type trimmer for ornamental plants and application thereof.The plant type trimmer comprises a supporting frame, a horizontal trimming assembly and an arc-shaped trimming assembly; the supporting frame comprises a mounting plate located on the upper portion and connecting columns arranged around the circumference of the mounting plate at equal intervals, the connecting columns are slidably sleeved with positioning columns, and the horizontal pruning assembly is arranged on the mounting plate and used for adjusting the horizontal pruning height of plants along with vertical movement of the mounting plate. Through cooperative cooperation of the horizontal pruning assembly and the arc pruning assembly, the pruning height of the top plane of a plant can be accurately controlled, shaping of the arc profile of the side face of the plant is synchronously completed, complex modeling pruning can be achieved through one-time operation, and the operation efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plant pruning, in particular to a plant trimmer for ornamental plants and applications thereof. Background Art

[0002] Ornamental plants are widely used in garden landscape, courtyard decoration and indoor gardening due to their unique shape and aesthetic value. In order to maintain the artistic form of ornamental plants, fine pruning is often required. Most garden plants need to be pruned to height during the seedling stage, and some seedlings need to be pruned in both height and arc simultaneously. For example, in order to maintain the consistent plant shape of the four-season azalea seedlings after they are planted, planting workers need to perform multiple simultaneous prunings in height and arc during the seedling stage. In particular, the pruning height of the main trunk should be determined according to the horizontal crown width of the four-season azalea during the seedling stage. In this case, more sophisticated pruning machines need to be used in the nursery for quick pruning.

[0003] At present, the plant pruning equipment on the market is difficult to meet the special pruning needs of ornamental plants. On the one hand, traditional pruning tools have single functions. For example, hedge trimmers are suitable for straight or flat pruning, and require manual holding, which is greatly affected by the subjective influence of personnel. Flat pruning cannot be guaranteed during pruning, which may lead to uneven pruning. There are also arc trimmers, which can only process side contours. If multi-dimensional composite shapes are to be completed, it is necessary to frequently switch between flat pruning equipment and arc pruning equipment, which is not only inefficient, but also easily leads to errors in the connection between different pruning surfaces, affecting the overall aesthetics of the shape.

[0004] Based on the above situation, it is urgent to solve the existing problem of a pruner that determines the degree of pruning of the trunk height according to the growth of the crown width, and then propose a plant shape pruner for ornamental plants to solve the above problem. Summary of the Invention

[0005] The invention provides a plant trimmer for ornamental plants to solve the problems existing in the prior art.

[0006] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0007] A plant trimmer for ornamental plants, comprising a support frame, a horizontal trimming assembly and an arc-shaped trimming assembly, wherein the support frame is used to be placed above the plant to be trimmed, the support frame comprises a mounting plate located above and connecting columns equidistantly arranged around the circumference of the mounting plate, a positioning column is slidingly sleeved on the connecting column, the horizontal trimming assembly is arranged on the mounting plate, and is used to adjust the horizontal trimming height of the plant following the up and down movement of the mounting plate, a plurality of the positioning columns are commonly connected with an annular positioning ring, the arc-shaped trimming assembly is movably connected to the annular positioning ring through a connecting frame, and the annular positioning ring is provided with a driving mechanism for driving the arc-shaped trimming assembly to perform arc-shaped trimming on the side of the plant by the axial circular motion of the horizontal trimming assembly.

[0008] Preferably, the arc-shaped trimming assembly includes a fixed plate, an arc-shaped fixed saw blade provided on the fixed plate, and an arc-shaped movable saw blade movably connected to the fixed plate; the fixed plate is connected to a mounting box; a linear rack is slidably connected to the interior of the mounting box; a first gear rotatably connected to the mounting box is meshed on the linear rack; an arc-shaped movable saw blade is provided on one side thereof with an arc-shaped rack meshed with the first gear; a telescopic part whose movable end is connected to the linear rack is also provided in the mounting box for driving the linear rack to reciprocate.

[0009] Preferably, the connecting frame includes a vertical portion and a transverse portion connected to both ends of the vertical portion. The transverse portion is a telescopic structure, and the telescopic length is locked by fasteners. The fixing plate is detachably connected to the two transverse portions, and the vertical portion is connected to a connecting ring that is rotatably connected to the annular positioning ring.

[0010] Preferably, the driving mechanism includes a first driving motor and a second gear connected to the output shaft of the first driving motor, and the connecting ring is provided with a gear ring meshing with the second gear.

[0011] Preferably, a return spring is connected between the connecting column and the positioning column.

[0012] Preferably, a calibration rod for calibrating the horizontal cutting height of the plant is threadedly connected to the mounting plate.

[0013] Preferably, the horizontal pruning assembly includes a second drive motor and a rotating cutter disc connected to the output shaft of the second drive motor, wherein the rotating cutter disc has cutting blades evenly distributed around the circumference, and its rotation plane is perpendicular to the plant growth axis to achieve top plane pruning.

[0014] Preferably, an overload protection device is provided between the output shaft of the second drive motor and the rotating cutter disc, and when the load torque of the rotating cutter disc exceeds a preset threshold, the overload protection device interrupts power transmission.

[0015] The present invention also provides an application of a plant shape trimmer in controlling the plant shape of azalea, comprising the following steps:

[0016] (1) In the spring of the second year after cutting, the crown width of the four-season azalea seedlings grew to 11cm-12cm. The main branches were pruned with the plant pruning device of the present application, leaving a height of 3cm. At the same time, the crown width was trimmed neatly, and the crown width was kept at 3cm.

[0017] (2) In the spring of the third year after cutting, the crown width of the four-season azalea seedlings was 16cm-17cm. The plant pruner of the present application was used to prune the main branches to leave a height of 7cm, and the crown width was trimmed neatly at the same time, and the crown width was kept at 7cm.

[0018] The present invention also provides a method for promoting the germination of new branches and buds of Rhododendron australis, comprising the following steps:

[0019] In the spring of the second year after cutting, the crown width of the four-season azalea seedlings grows to 11cm-12cm. A conventional pruner or the pruner of the present invention can be used to prune the main branches to leave a height of 3cm, and at the same time, the crown width is trimmed neatly, and the crown width is kept at 3cm.

[0020] And / or in the spring of the third year of cutting, the crown width of the four-season azalea seedlings is 16cm-17cm. A conventional pruner or the pruner of the present invention can be used to prune the main branches to leave a height of 7cm, and at the same time, the crown width is trimmed neatly, and the crown width is kept at 7cm.

[0021] The present invention has the following beneficial effects:

[0022] 1. Through the coordinated cooperation of the horizontal pruning component and the arc pruning component, the pruning height of the top plane of the plant can be accurately controlled, and the arc contour of the side of the plant can be shaped simultaneously. Complex shape pruning can be achieved in one operation, which greatly improves the working efficiency. When pruning, you only need to put the support frame on the outside of the plant to be pruned. The structural design of the positioning column and the annular positioning ring can ensure that the pruner can quickly locate the center of the plant, making it easier to prune.

[0023] 2. The present invention is particularly designed for fine pruning of smaller plants. When plants of different sizes need to be pruned, the length of the transverse portion is adjusted and the fasteners are rotated to fix it, and then the positions of the fixing plate and the arc-shaped pruning assembly are adjusted. In particular, if the plant is small, the length of the transverse portion can be adjusted to be longer, so that the arc-shaped pruning assembly can be adjusted to a position close to the plant, and the fixing plate can be detachably connected to the transverse portion to replace the arc-shaped pruning assembly, such as replacing it with a fixed saw blade and a curved movable saw blade with different curvatures, so as to achieve pruning of plant shapes with different curvatures.

[0024] 3. The present invention does not require the subsequent separate pruning of the top or side of the plant, and the pruning efficiency is higher. It is particularly suitable for the fixed pruning method of adjusting the trunk height of the pruned garden plants according to the size of the crown. In particular, it is suitable for the trunk height control method of the four-season azalea under the precise crown control.

[0025] 4. The present invention is suitable for intensive production operations in nurseries, and can quickly prune an entire row of plants one by one. Protective plates can also be connected between the positioning columns. On the one hand, the protective plates can fix multiple positioning columns. On the other hand, the protective plates can protect the legs during pruning operations, reducing safety hazards.

[0026] 5. When the pruning method of the present invention is used for pruning four-season azalea seedlings, more than 90% of new buds and branches can germinate 10-15 days after each pruning. The plant shape is basically formed about one and a half months after pruning. Studies have found that pruning crown width and height have a great effect on shaping the plant shape of four-season azalea seedlings and promoting new buds, and the plant shape is more compact, and the size of new branches will not differ too much.

[0027] 6. The present invention also studies a method for promoting the germination of new branches and buds of four-season azalea, wherein the method is particularly for four-season azalea cuttings. Pruning in the spring of the second year and / or the third year after cutting can greatly increase the germination rate, significantly increase the number of side branches and new buds, thereby increasing the number of flowers, and can cultivate Figure 11 The very compact plant type shown ( Figure 10 If the cuttings are not pruned, the plant shape will not be compact and the amount of flowers will be small); this breaks the idea that in the daily management of azaleas, the conventional garden flowers are pruned too lightly due to inadequate pruning or lack of determination, which cannot effectively promote the sprouting of new branches and control the plant shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 The isometric structure provided by the present invention is shown as follows: Figure 1 ;

[0030] Figure 2 The isometric structure provided by the present invention is shown as follows: Figure 2 ;

[0031] Figure 3 A schematic diagram provided for the present invention;

[0032] Figure 4 Schematic diagram of the installation structure of the connecting column and the positioning column in the present invention;

[0033] Figure 5 Schematic diagram of the connection structure of the arc trimming assembly in the present invention;

[0034] Figure 6 Schematic diagram of the cross-sectional structure of the arc trimming component in the present invention

[0035] Figure 7 A schematic diagram of the connecting frame structure provided by the present invention;

[0036] Figure 8 Schematic diagram of the structure of the support frame in the present invention;

[0037] Figure 9 This is a schematic diagram of the height control pruning of the four-season azalea seedlings after the new branches and buds germinate;

[0038] Figure 10 This is a schematic diagram of flowering of the control group of the four-season azalea without crown height synchronous pruning of the present invention;

[0039] Figure 11 This is a schematic diagram of flowering of the four-season azalea after crown height synchronization pruning according to the present invention;

[0040] Figure 12 The response surface diagram of the crown width and height factors on the germination of new branches and buds of the present invention;

[0041] Figure 13 This is a response surface diagram of the crown width and fertilization factors on the germination of new branches and buds of the present invention;

[0042] Figure 14 Response surface diagram of the height and fertilization factors on the germination of new branches and buds of the present invention;

[0043] Figure 15 It is the residual normal distribution of the influencing factors of new branch and bud germination of the present invention.

[0044] In the figure, 1. support frame; 11. mounting plate; 12. connecting column; 13. positioning column; 14. return spring; 2. horizontal trimming assembly; 21. second drive motor; 22. rotating cutter head; 23. cutting blade; 3. arc trimming assembly; 31. fixing plate; 32. arc fixed saw blade; 33. arc movable saw blade; 34. mounting box; 35. linear rack; 36. first gear; 37. arc rack; 38. telescopic member; 4. annular positioning ring; 41. connecting frame; 411. vertical part; 412. horizontal part; 413. fastener; 414. connecting ring; 415. gear ring; 5. first drive motor; 51. second gear; 6. calibration rod; 7. overload protection device. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0046] Example 1, reference Figures 1-15 As shown, a plant trimmer for ornamental plants includes a support frame 1 for being placed above the plants to be trimmed. The support frame 1 includes a mounting plate 11 located above and connecting columns 12 equidistantly arranged around the circumference of the mounting plate 11. Positioning columns 13 are slidably sleeved on the connecting columns 12. A horizontal trimming component 2 is also connected to the center of the mounting plate 11. When the mounting plate 11 slides up and down following the connecting columns 12 and the positioning columns 13, the height of the horizontal trimming component 2 can be adjusted to trim the plants at different heights. The support frame 1 also includes an arc-shaped trimming component 3, which is located between the multiple positioning columns 13. The arc trimming assembly 3 is connected to the annular positioning ring 4 through a connecting frame 41, and the annular positioning ring 4 is further provided with a driving mechanism for driving the arc trimming assembly 3 to perform arc trimming on the side of the plant by the axial circular motion of the horizontal trimming assembly 2. The horizontal trimming assembly 2 cooperates with the arc trimming assembly 3 to control the trimming height of the top plane of the plant and simultaneously complete the shaping of the arc contour of the side of the plant. Complex shaping can be achieved in one operation without the need to perform separate trimming of the top or side of the plant later, which has higher trimming efficiency.

[0047] A protective plate can also be connected between the positioning posts. On the one hand, the protective plate can fix multiple positioning posts. On the other hand, the protective plate can protect the legs during pruning operations to reduce safety hazards.

[0048] Reference Figure 1-Figure 5As shown, further, the arc trimming assembly 3 includes a fixed plate 31, an arc fixed saw blade 32 provided on the fixed plate 31, and an arc movable saw blade 33 movably connected to the fixed plate 31. The fixed plate 31 is connected to a mounting box 34. The interior of the mounting box 34 is slidably connected to a linear rack 35. The linear rack 35 is meshed with a first gear 36 that is rotatably connected to the mounting box 34. One side of the arc movable saw blade 33 is provided with an arc rack 37 that meshes with the first gear 36. The mounting box 34 is also provided with a telescopic member 38 with a movable end connected to the linear rack 35 for driving the linear rack 35 to move Reciprocating motion. When in use, the telescopic member 38 drives the linear rack 35 to slide back and forth, driving the first gear 36 to rotate back and forth, thereby driving the arc-shaped movable saw blade 33 to reciprocate through the arc-shaped rack 37 engaged therewith. The arc-shaped movable saw blade 33 has the same curvature as the arc-shaped fixed saw blade 32, so that the arc-shaped movable saw blade 33 makes reciprocating linear motion along the cutting edge of the arc-shaped fixed saw blade 32, and a shearing gap is formed between the cutting edges of the two. When branches and leaves enter the gap, the high-speed reciprocating motion of the movable blade cuts them off to achieve pruning. The telescopic member 38 can adopt an electric telescopic rod or other device that can drive the linear rack 35 to reciprocate.

[0049] Among them, the connecting frame 41 includes a vertical portion 411 and a horizontal portion 412 connected to both ends of the vertical portion 411. The horizontal portion 412 is a telescopic structure and is locked in telescopic length by a fastener 413. The horizontal portion 412 can be movably connected through a multi-stage telescopic sleeve rod. The fastener 413 can be a bolt, etc. The multi-stage telescopic sleeve rod is locked by the fastener 413. The fixing plate 31 and the two horizontal portions 412 are detachably connected, and a connecting ring 414 rotatably connected to the annular positioning ring 4 is connected to the vertical portion 411. When different sizes of When pruning plants, after fixing them by adjusting the length of the transverse portion 412 and rotating the fastener 413, adjust the position of the fixing plate 31 and the arc-shaped pruning component 3. For example, when the plant is small, the length of the transverse portion 412 can be adjusted to be longer so that the arc-shaped pruning component 3 can be adjusted to a position close to the plant. The fixing plate 31 can be detachably connected to the transverse portion 412 to replace the arc-shaped pruning component 3, such as replacing it with a fixed saw blade with different curvatures and a curved movable saw blade 33, so as to achieve pruning of plant shapes with different curvatures.

[0050] Reference Figure 6As shown, further, in order to drive the arc-shaped pruning component 3 to move in a circular motion around the plant for pruning, the driving mechanism includes a first driving motor 5 and a second gear 51 connected to the output shaft of the first driving motor 5, and a connecting ring 414 is provided with a gear ring 415 meshing with the second gear 51. The first driving motor 5 drives the second gear 51 to rotate, so that the second gear 51 drives the gear ring 415 meshing with it to rotate, thereby realizing that the connecting ring 414 drives the connecting frame 41 and the arc-shaped pruning component 3 to rotate in a circular motion with the axis of the supporting frame 1 as the center, so as to realize the circumferential pruning work around the circumference of the plant.

[0051] Reference Figure 1 As shown, further, the horizontal pruning component 2 includes a second drive motor 21 and a rotating cutter disc 22 connected to the output shaft of the second drive motor 21, and the rotating cutter disc 22 is evenly distributed with cutting blades 23 in the circumference, and its rotation plane is perpendicular to the growth axis of the plant. The second drive motor 21 drives the rotation of the rotating cutter disc 22 so that the cutting blade 23 performs a plane trimming on the top of the plant, and a calibration rod 6 for calibrating the horizontal cutting height of the plant is threadedly connected to the mounting plate 11. As shown in the figure, taking the required trimming height of the plant to be 11 cm as an example, the calibration rod 6 is rotated so that the distance between the bottom end of the calibration rod 6 and the rotating cutter disc 22 is 11 cm, and then the horizontal pruning component 2 is driven downward by the mounting plate 11 to trim the plant at a horizontal height. Then, when the mounting plate 11 drives the bottom end of the calibration rod 6 to contact the ground, the mounting plate 11 drives the horizontal pruning component 2 to move downward and is blocked. At this time, the distance between the rotating cutter disc 22 and the ground is 11 cm, so as to complete the trimming of the plant at a specific horizontal height.

[0052] Among them, a reset spring 14 is connected between the connecting column 12 and the positioning column 13. After the horizontal trimming is completed, the pressure on the mounting plate 11 is released. Under the action of the reset spring 14, the horizontal trimming component 2 can be driven to reset upward. The reset spring 14 can be used with a stiffness that can support the mounting plate 11 and the horizontal trimming component 2, so that the horizontal trimming component 2 can automatically reset upward after the trimming is completed.

[0053] Reference Figure 8As shown, further, an overload protection device 7 is provided between the output shaft of the second drive motor 21 and the rotating cutter disc 22. When the load torque of the rotating cutter disc 22 exceeds a preset threshold value, the overload protection device 7 interrupts the power transmission, wherein the overload protection device 7 may include an active friction plate, a driven friction plate, a spring assembly, etc. The active friction plate is fixedly connected to the output shaft of the second drive motor 21 through a spline and rotates synchronously with the output shaft. The driven friction plate is fixed to the rotating cutter disc 22 through a keyway. The spring assembly is located between the active friction plate and the driven friction plate, and includes a disc spring and an adjusting nut for applying axial preload force to the active friction plate and the driven friction plate. The above is the prior art, which is known to those skilled in the art and will not be elaborated on here. When the rotating blade is working normally, the active friction plate and the driven friction plate are in the spring state. The spring preload is applied tightly, and the torque is transmitted through friction to drive the rotary cutter disc 22 to rotate. When the rotary cutter disc 22 encounters an obstacle and the load torque exceeds the preset threshold, the static friction between the friction plates is broken, and the active friction plate slips relative to the driven friction plate, interrupting the power transmission and protecting the second drive motor 21 and the transmission components. For example, near the root of the plant, there are often irregular forks or tree tumors. The eccentric force of the blade contact point during pruning will cause torque fluctuations, and continuous overload will cause the current of the second drive motor 21 to surge. In addition, when the torque is overloaded, the equipment may vibrate violently, causing the blade to fly out of control. When pruning with a handheld device, the operator may lose the grip balance due to the counter-torque, causing a safety accident. The setting of the overload protection device 7 can improve pruning safety.

[0054] Example 2

[0055] The application of the plant shape trimmer of Example 1 to the plant shape control of the four-season azalea comprises the following steps:

[0056] (1) In the spring of the second year after cutting, the crown width of the four-season azalea seedlings grew to 11cm-12cm. The main branches were pruned with the plant pruning device of the present application, leaving a height of 3cm. At the same time, the crown width was trimmed neatly, and the crown width was kept at 3cm.

[0057] (2) In the spring of the third year after cutting, the crown width of the four-season azalea seedlings was 16cm-17cm. The plant pruner of the present application was used to prune the main branches to leave a height of 7cm, and the crown width was trimmed neatly at the same time, and the crown width was kept at 7cm.

[0058] Example 3

[0059] A method for promoting the germination of new branches and buds of Rhododendron truncatum, comprising the following steps:

[0060] In the spring of the second year after cutting, when the crown of the four-season azalea seedlings grows to 11cm-12cm, use a pruner to trim the main branches and leave a height of 3cm. At the same time, trim the crown neatly and keep the crown width at 3cm.

[0061] And / or in the spring of the third year of cuttings, the crown width of the four-season azalea seedlings is 16cm-17cm. Use a pruner to trim the main branches and leave a height of 7cm. At the same time, trim the crown width neatly and keep it at 7cm.

[0062] Experiment 1: Response surface methodology for factors affecting the germination of new branches and buds in Rhododendron sempervirens

[0063] Experimental method: The experiment selected three-year-old four-season azalea cutting experimental seedlings, the early cutting method and the environmental management method were consistent, and in the spring of the second year, the four-season azalea seedlings had a crown width of 11cm-12cm, the main branches were pruned to leave a height of 3cm, and the crown width was trimmed synchronously, and the crown width was maintained at 3cm (same as Example 2 or 3); the crown width to be pruned, the crown width after pruned and the seedling height (same value), and the water-soluble fertilizer were tested according to the parameters in Table 1. The treatment method is shown in the table below, wherein the water-soluble fertilizer is a fertilizer with a nitrogen, phosphorus and potassium ratio of 20:20:20. , 1g fertilizer is mixed with 1000mL water, and it is enough to water it thoroughly each time. The principle of applying thin fertilizer frequently (see Table 1 for fertilization methods) is followed. Topdressing should start in February each year and end when new branches and buds begin to sprout; the rate of new branches or new buds on the old branches 15 days after pruning each pot of seedlings is used as the response value. When measuring specifically, the percentage of new branches or new buds sprouting on all side branches to the total number of side branches is used as the response value. If the side branch is a first-level side branch, it is recorded as 1; if the side branch is a second-level side branch branched from a first-level side branch, it is recorded as 2; if the side branch is a third-level side branch branched from a second-level side branch, it is recorded as 3; 3 pots are treated each time.

[0064] Table 1 Effects of different factors on the control of plant shape of Rhododendron truncatum

[0065]

[0066]

[0067] Experimental results:

[0068] The data in Table 1 were subjected to regression fitting analysis using the Design-Expert 12.0 statistical analysis software to obtain the final response results (( Figure 12-15 The results showed that the changes in the numerical range of the three variables had significant differences (P-value) in the effects of the germination rate of new branches or new buds.

[0069] The response variable (% new shoot or bud germination) changes relatively slowly with increasing water-soluble fertilizer application time (C) (3 days / application → 7 days / application). However, the change is more pronounced with increasing canopy width (A) (14 cm → 18 cm) (especially in the 17 cm-18 cm range), followed by increasing canopy width and height (B) (6 cm → 8 cm) (especially in the 6 cm-7 cm range). The slope of the surface is steeper in the A direction, and the color transition from red to green is faster, indicating that a unit change in canopy width (A) has a stronger impact on the response value (% new shoot or bud germination). Contour lines are denser along the Y-axis (canopy width A), with smaller contour spacing near 17 cm, indicating that changes in canopy width (e.g., ±2 cm) lead to larger jumps in the response value. In contrast, the contour lines corresponding to the water-soluble fertilizer application time (C) are sparser, indicating a more gradual response to changes in fertilization timing. The contour lines of the three response surface plots are all elliptical, indicating that there are interactions between A and B, A and C, and B and C.

[0070] The best predicted factor combination is: A (crown width to be pruned): 15.7 cm, B (crown width and height after pruning): 6.4 cm, C (water-soluble fertilizer application time): 5 days / time water-soluble fertilizer. Under these conditions, TCA-N predicts that the germination rate of new branches or new buds is 94.7%. Residuals are normally distributed. Figure 15 It shows a random distribution, that is, the points of new branch or bud germination rate are close to the straight line, indicating that the residuals are randomly distributed, there is no special pattern in the data, and the model assumptions are valid.

[0071] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A plant trimmer for ornamental plants, characterized in that: include; A support frame (1) is used to be placed above a plant to be pruned, the support frame (1) comprising a mounting plate (11) located above and connecting columns (12) equidistantly arranged around the circumference of the mounting plate (11), wherein a positioning column (13) is slidably sleeved on the connecting column (12); A horizontal pruning assembly (2), the horizontal pruning assembly (2) being arranged on the mounting plate (11) and being used to adjust the horizontal pruning height of the plant following the up and down movement of the mounting plate (11); An arc-shaped pruning assembly (3) is provided, wherein a plurality of positioning columns (13) are commonly connected to an annular positioning ring (4), the arc-shaped pruning assembly (3) is movably connected to the annular positioning ring (4) via a connecting frame (41), and the annular positioning ring (4) is provided with a driving mechanism for driving the arc-shaped pruning assembly (3) to perform arc-shaped pruning on the side of the plant by the axial circular motion of the horizontal pruning assembly (2).

2. The ornamental plant trimmer according to claim 1, characterized in that: The arc-shaped trimming assembly (3) comprises a fixed plate (31), an arc-shaped fixed saw blade (32) arranged on the fixed plate (31), and an arc-shaped movable saw blade (33) movably connected to the fixed plate (31); the fixed plate (31) is connected to a mounting box (34); a linear rack (35) is slidably connected inside the mounting box (34); a first gear (36) rotatably connected to the mounting box (34) is meshed with the linear rack (35); an arc-shaped rack (37) meshed with the first gear (36) is provided on one side of the arc-shaped movable saw blade (33); a telescopic member (38) whose movable end is connected to the linear rack (35) is further provided in the mounting box (34) for driving the linear rack (35) to reciprocate.

3. The ornamental plant trimmer according to claim 2, characterized in that: The connecting frame (41) comprises a vertical portion (411) and a transverse portion (412) connected to both ends of the vertical portion (411); the transverse portion (412) is a telescopic structure, and the telescopic length is locked by a fastener (413); the fixing plate (31) and the two transverse portions (412) are detachably connected, and a connecting ring (414) rotatably connected to the annular positioning ring (4) is connected to the vertical portion (411).

4. The ornamental plant trimmer according to claim (3), characterized in that: The driving mechanism comprises a first driving motor (5) and a second gear (51) connected to the output shaft of the first driving motor (5); the connecting ring (414) is provided with a gear ring (415) meshing with the second gear (51).

5. The ornamental plant trimmer according to claim 1, characterized in that: A return spring (14) is connected between the connecting column (12) and the positioning column (13).

6. The ornamental plant trimmer according to claim 1, characterized in that: A calibration rod (6) for calibrating the horizontal cutting height of plants is threadedly connected to the mounting plate (11).

7. The ornamental plant trimmer according to claim 1, characterized in that: The horizontal pruning assembly (2) comprises a second drive motor (21) and a rotating blade disc (22) connected to the output shaft of the second drive motor (21); the rotating blade disc (22) is evenly distributed with cutting blades (23) in the circumference, and its rotation plane is perpendicular to the plant growth axis to achieve top plane pruning.

8. The ornamental plant trimmer according to claim 7, characterized in that: An overload protection device (7) is provided between the output shaft of the second drive motor (21) and the rotating cutter disc (22); when the load torque of the rotating cutter disc (22) exceeds a preset threshold, the overload protection device (7) interrupts power transmission.

9. Use according to any one of claims 1 to 8 in any one of the following aspects: (1) Application in controlling plant shape during the seedling stage of Rhododendron truncatum; (2) Application in promoting the growth of new shoots of ornamental plants; (3) Application in promoting the compact growth of ornamental plants; (4) Application in increasing the flowering rate of ornamental plants.

10. A method for promoting the germination of new branches and buds of Rhododendron truncatum, comprising the following steps: In the spring of the second year after cutting, when the crown of the four-season azalea seedlings grows to 11cm-12cm, use a pruner to trim the main branches and leave a height of 3cm. At the same time, trim the crown neatly and keep the crown width at 3cm. And / or in the spring of the third year of cuttings, the crown width of the four-season azalea seedlings is 16cm-17cm. Use a pruner to trim the main branches and leave a height of 7cm. At the same time, trim the crown width neatly and keep it at 7cm.

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