Back branch shearing equipment for fruit tree planting

Abstract

The invention discloses back branch pruning equipment for fruit tree planting, and relates to the technical field of branch pruning. Comprising a supporting rod, an adjusting assembly is arranged at the top end of the supporting rod, a U-shaped frame plate is fixedly installed on the adjusting assembly, triangular support plates which are symmetrically arranged are fixedly installed at the top end of the U-shaped frame plate, and pre-cutting assemblies are arranged in the U-shaped frame plate and the triangular support plates; an adjusting assembly is arranged on the U-shaped frame plate, the shape of the pre-cutting assembly is adjusted through the adjusting assembly, positioning frame plates which are symmetrically arranged are fixedly installed on the triangular support plate, and shearing assemblies are arranged in the positioning frame plates. According to the fruit tree pruning device, thick and strong branches are pre-cut through the pre-cutting assembly, then the pre-cut branches are directly sheared through cooperation of the adjusting assembly and the shearing assembly, the phenomenon that the end faces are uneven in the cutting process can be avoided, and the more efficient and accurate fruit tree pruning effect and efficiency of the device are effectively achieved.

Description

Technical Field

[0001] The invention relates to the technical field of branch pruning, in particular to a back branch pruning device used for fruit tree planting. Background Art

[0002] For fruit trees that have entered the fruiting period, the crowns gradually open due to the gradual strengthening of centrifugal growth and the increase in fruit load. If not pruned in time, the crown's ability to expand will weaken as the amount of fruit increases, and then it will stop expanding. The number of drooping branches and weak branches will increase, the fruiting area will move outward, and the crown will be poorly ventilated, causing some branches to become weak and dry.

[0003] In the prior art, a Chinese patent with publication number "CN108834613A" discloses a branch shearing device, which fixes branches through a fixing mechanism, and then drives a cutting mechanism through a driving mechanism, so that the cutting mechanism cuts the tree in the fixing mechanism. In this way, the branch shearing is performed by mechanical equipment, which greatly improves the shearing efficiency while ensuring the safety of the staff, thereby meeting people's use needs and solving the problem that the existing branch shearing is generally performed by hand, which is inefficient and easy to damage the hands of the staff.

[0004] The back branches of fruit trees mainly refer to the branches growing on the back of horizontal or oblique branches of fruit trees. They are mainly formed by the germination of back buds on branches or the inner branches of upright branches after pulling. If the back branches are too vigorous, they will consume a lot of nutrients of the fruit trees, which is extremely detrimental to the expansion of young fruits. In order to improve the fruit production efficiency, tools are usually used to cut off the back branches. When personnel are cutting the back branches of fruit trees, when the back branches are too thick, it is difficult to cut them with ordinary scissors. Although saw blades can be used for direct cutting, the saw blade cuts from one side to the other. When it is about to be cut off, due to the gravity of the back branches and the effect of the center of gravity, it is easy to break prematurely, which will cause the cut surface to be uneven and the remaining branches to be damaged. In subsequent cases, personnel will need to repair them again. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a back branch pruning device for fruit tree planting, which solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A back branch pruning device for fruit tree planting, comprising a support rod, an adjusting assembly is arranged at the top of the support rod, a U-shaped frame plate is fixedly mounted on the adjusting assembly, a symmetrically arranged triangular support plate is fixedly mounted at the top of the U-shaped frame plate, and a pre-cutting assembly is arranged inside the U-shaped frame plate and the triangular support plate;

[0008] The U-shaped frame plate is provided with an adjustment component, through which the shape of the pre-cutting component is adjusted; the triangular support plate is fixedly mounted with symmetrically arranged positioning frames, and the interior of the positioning frames is provided with a shearing component.

[0009] Preferably, the pre-cutting component includes a lifting frame plate arranged on a U-shaped frame plate, a driving motor is fixedly installed on the lifting frame plate, a driving sprocket is fixedly installed on the output end of the driving motor, positioning sliders are provided at the left and right corners of the triangular bracket plate, auxiliary shafts are rotatably installed inside the two positioning sliders, and a first auxiliary sprocket and a second auxiliary sprocket are respectively fixedly installed on the two auxiliary shafts.

[0010] Preferably, the driving sprocket and the first auxiliary sprocket and the second auxiliary sprocket are driven by a saw chain, the first auxiliary sprocket and the second auxiliary sprocket are arranged symmetrically, and the driving sprocket and the first auxiliary sprocket and the second auxiliary sprocket are arranged in a triangle.

[0011] Preferably, the adjustment assembly includes an electric push rod fixedly installed on the inner bottom of the U-shaped frame plate, the side end surfaces of the two positioning sliders are fixedly installed with mounting shafts, the ends of the two mounting shafts away from the positioning sliders are fixedly installed with positioning shafts, the outer side of the U-shaped frame plate is fixedly installed with an L-shaped frame plate, the interior of the L-shaped frame plate is fixedly installed with symmetrically arranged connecting shafts, the two connecting shafts are respectively rotatably installed with a first driving rod and a second driving rod, and the ends of the first driving rod and the second driving rod away from the connecting shaft are respectively rotatably connected to the two positioning shafts.

[0012] Preferably, the output shaft of the electric push rod is fixedly connected to the lower end surface of the lifting frame plate, the outer side surface of the U-shaped frame plate is provided with a lifting groove, the lifting frame plate is slidably connected to the lifting groove, the outer side surface of the triangular bracket plate is provided with a positioning groove, the positioning slider is slidably connected to the positioning groove, a stabilizing groove is provided inside the positioning groove, a stabilizing slider is fixedly installed on the positioning slider, and the stabilizing groove is slidably connected to the stabilizing slider.

[0013] Preferably, the shearing assembly includes a mounting plate slidably mounted between two positioning frame plates, a fixed shaft is fixedly mounted inside the mounting plate, a first cutting head and a second cutting head are rotatably mounted on the fixed shaft, a limiting shaft is fixedly mounted on one end of the first cutting head and the second cutting head respectively, a V-shaped groove is provided on the inner side surface of the mounting plate, and the limiting shaft is slidably connected to the V-shaped groove.

[0014] Preferably, a positioning block is fixedly installed on the lower end surface of the mounting frame plate, and a stabilizing shaft is fixedly installed on both ends of the positioning block. A first driven rod and a second driven rod are rotatably installed on the stabilizing shaft, and the first driven rod and the second driven rod are rotatably connected to the two mounting shafts at one end away from the stabilizing shaft.

[0015] Preferably, the adjustment assembly is fixedly mounted on a connecting rod on the lower end surface of the U-shaped frame plate, a fixing groove is provided at the bottom end of the connecting rod, a fixing rod is fixedly mounted on the top end of the support rod, a first threaded hole is provided on the fixing groove, and a second threaded hole is provided on the fixing rod.

[0016] Preferably, the fixing groove and the fixing rod are embedded, and the fixing groove and the fixing rod are fixed by bolts and nuts.

[0017] The present invention provides a back branch pruning device for fruit tree planting. Compared with the prior art, the device has the following beneficial effects:

[0018] 1. The present invention drives the driving sprocket to rotate by a driving motor, and utilizes the function of the saw chain to rotate the first auxiliary sprocket and the second auxiliary sprocket on the triangular bracket plate, so that the saw chains on the driving sprocket, the first auxiliary sprocket and the second auxiliary sprocket are in a transmission state, and the function of the saw chain is utilized to complete the pre-cutting of the upper branches of the fruit tree. Since the saw chain is in a triangular state, it is ensured that the saw chain maintains a stable movement path during the cutting process, and the loosening and slipping of the saw chain are avoided, thereby improving the stability and cutting efficiency of the saw chain;

[0019] 2. The present invention drives the driving sprocket on the lifting frame plate to descend by the driving of the electric push rod, and at the same time, the first driving rod and the second driving rod on the L-shaped frame plate cooperate with the two positioning shafts to make the first auxiliary sprocket and the second auxiliary sprocket on the two positioning slide blocks pass through the limit of the positioning slide groove, thereby moving inward, and the saw chain in a triangular state will follow the position movement of the driving sprocket, the first auxiliary sprocket and the second auxiliary sprocket, thereby adjusting. Through this adjustment, the saw chain can adapt to different fruit tree branch environments, avoid damage to other branches during cutting, and ensure the efficient and safe pruning effect of the equipment;

[0020] 3. In the present invention, the saw chain shape can be adjusted by driving the first driven rod and the second driven rod to adjust the angle through the mounting shaft. The first driven rod, the second driven rod and the stabilizing shaft cooperate with each other, and the mounting frame is pushed to move upward on the positioning frame through the positioning block. When the mounting frame is raised, the first cutting head and the second cutting head in the mounting frame cooperate with the limiting shaft and the V-shaped slide groove to achieve the shearing function. The shearing function is used to facilitate the shearing of small back branches, effectively improving the shearing effect of the device.

[0021] 4. The present invention completes the pre-cutting of thick branches through the pre-cutting component, and then directly cuts off the pre-cut branches by utilizing the cooperation of the adjustment component and the pruning component, which can avoid the uneven end surface phenomenon that occurs during the cutting process and effectively achieve a more efficient and accurate fruit tree pruning effect and efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 is a cross-sectional view of a U-shaped frame plate in the present invention;

[0024] Figure 3 It is a structural schematic diagram of the triangular bracket plate in the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the pre-cutting component in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the positioning frame plate in the present invention;

[0027] Figure 6 It is a side sectional view of the positioning frame plate in the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the positioning frame plate in the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the regulating component in the present invention.

[0030] In the figure: 1, support rod; 2, U-shaped frame plate; 3, triangular support plate; 4, positioning frame plate; 5, lifting frame plate; 6, driving motor; 7, driving sprocket; 8, positioning slider; 9, auxiliary shaft; 10, first auxiliary sprocket; 11, second auxiliary sprocket; 12, saw chain; 13, electric push rod; 14, mounting shaft; 15, positioning shaft; 16, L-shaped frame plate; 17, connecting shaft; 18, first driving rod; 19, second driving rod; 20, lifting slot; 21. Positioning slide groove; 22. Stabilizing slide groove; 23. Stabilizing slider; 24. Mounting frame; 25. Fixed shaft; 26. First cutting head; 27. Second cutting head; 28. Limiting shaft; 29. ​​V-shaped slide groove; 30. Positioning block; 31. Stabilizing shaft; 32. First driven rod; 33. Second driven rod; 34. Connecting rod; 35. Fixing groove; 36. Fixing rod; 37. First threaded hole; 38. Second threaded hole; 39. Bolt; 40. Nut. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-8 The present invention is a back branch pruning device for fruit tree planting, comprising a support rod 1, an adjusting component is arranged at the top of the support rod 1, a U-shaped frame plate 2 is fixedly installed on the adjusting component, a symmetrically arranged triangular support plate 3 is fixedly installed on the top of the U-shaped frame plate 2, a pre-cutting component is arranged inside the U-shaped frame plate 2 and the triangular support plate 3, an adjusting component is arranged on the U-shaped frame plate 2, and the shape of the pre-cutting component is adjusted by the adjusting component, a symmetrically arranged positioning frame plate 4 is fixedly installed on the triangular support plate 3, and a shearing component is arranged inside the positioning frame plate 4.

[0033] The pre-cutting component includes a lifting frame plate 5 arranged on the U-shaped frame plate 2, and a driving motor 6 is fixedly installed on the lifting frame plate 5, and a driving sprocket 7 is fixedly installed on the output end of the driving motor 6. Positioning sliders 8 are arranged at the left and right corners of the triangular bracket plate 3, and auxiliary shafts 9 are rotatably installed inside the two positioning sliders 8. The first auxiliary sprocket 10 and the second auxiliary sprocket 11 are respectively fixedly installed on the two auxiliary shafts 9. The driving sprocket 7 and the first auxiliary sprocket 10 and the second auxiliary sprocket 11 are driven by a saw chain 12. The first auxiliary sprocket 10 and the second auxiliary sprocket 11 are symmetrically arranged on the left and right. The driving sprocket 7 and the first auxiliary sprocket 10 and the second auxiliary sprocket 11 are arranged in a triangular arrangement, wherein the power source of the driving motor 6 can be connected using an external wiring, and its power source personnel can bring it or carry it using a pushing cart. Since this technology is well known to people in this field, it will not be described in detail here.

[0034] Herein, the driving sprocket 7 is driven to rotate by the driving motor 6, and the saw chain 12 is used to rotate the first auxiliary sprocket 10 and the second auxiliary sprocket 11 on the triangular bracket plate 3. The saw chain 12 on the driving sprocket 7, the first auxiliary sprocket 10 and the second auxiliary sprocket 11 will be in a transmission state, and the function of the saw chain 12 is used to complete the pre-cutting of the upper branches of the fruit tree. Since the saw chain 12 is in a triangular state, it is ensured that the saw chain 12 maintains a stable movement path during the cutting process, avoiding loosening and slipping of the saw chain 12, thereby improving the stability and cutting efficiency of the saw chain 12.

[0035] The adjustment assembly includes an electric push rod 13 fixedly mounted on the bottom of the U-shaped frame plate 2, the side end surfaces of the two positioning sliders 8 are fixedly mounted with mounting shafts 14, and the ends of the two mounting shafts 14 away from the positioning sliders 8 are fixedly mounted with positioning shafts 15, the outer side of the U-shaped frame plate 2 is fixedly mounted with an L-shaped frame plate 16, and the inside of the L-shaped frame plate 16 is fixedly mounted with symmetrically arranged connecting shafts 17, and the first driving rod 18 and the second driving rod 19 are respectively rotatably mounted on the two connecting shafts 17, and the ends of the first driving rod 18 and the second driving rod 19 away from the connecting shaft 17 are respectively rotatably connected to the two positioning shafts 15, and the output shaft of the electric push rod 13 is fixedly connected to the lifting frame The lower end surface of the plate 5 and the outer side surface of the U-shaped frame plate 2 are provided with a lifting groove 20, the lifting frame plate 5 is slidably connected to the lifting groove 20, the outer side surface of the triangular bracket plate 3 is provided with a positioning groove 21, the positioning slider 8 is slidably connected to the positioning groove 21, and a stabilizing groove 22 is provided inside the positioning groove 21. A stabilizing slider 23 is fixedly installed on the positioning slider 8, and the stabilizing groove 22 is slidably connected to the stabilizing slider 23. The number of L-shaped frame plates 16 is two, and the number of the first driving rod 18 and the second driving rod 19 are both two, and they are symmetrically arranged in pairs to ensure the stability of the driving sprocket 7, the first auxiliary sprocket 10 and the second auxiliary sprocket 11 when the position changes.

[0036] In this article, the driving sprocket 7 on the lifting frame plate 5 is lowered by the driving of the electric push rod 13, and at the same time, the first driving rod 18 and the second driving rod 19 on the L-shaped frame plate 16 cooperate with the two positioning shafts 15 to make the first auxiliary sprocket 10 and the second auxiliary sprocket 11 on the two positioning sliders 8 pass through the limit of the positioning slide groove 21 and move inward. The saw chain 12 in a triangular state will follow the position movement of the driving sprocket 7, the first auxiliary sprocket 10 and the second auxiliary sprocket 11, thereby adjusting. Through this adjustment, the saw chain 12 can adapt to different fruit tree branch environments to avoid damage to other branches during cutting, thereby ensuring the efficient and safe pruning effect of the equipment.

[0037] The shearing assembly includes a mounting plate 24 slidably mounted between the two positioning frame plates 4, a fixed shaft 25 is fixedly mounted inside the mounting plate 24, a first cutting head 26 and a second cutting head 27 are rotatably mounted on the fixed shaft 25, one end of the first cutting head 26 and the second cutting head 27 are respectively fixedly mounted with a limiting shaft 28, a V-shaped groove 29 is provided on the inner side surface of the mounting plate 24, the limiting shaft 28 is slidably connected to the V-shaped groove 29, a positioning block 30 is fixedly mounted on the lower end surface of the mounting plate 24, both ends of the positioning block 30 are fixedly mounted with a stabilizing shaft 31, a first driven rod 32 and a second driven rod 33 are rotatably mounted on the stabilizing shaft 31, and one end of the first driven rod 32 and the second driven rod 33 away from the stabilizing shaft 31 are respectively rotatably connected to the two mounting shafts 14, wherein the shape of the first cutting head 26 and the second cutting head 27 is the same as the shape of scissors in the prior art, since the shape of the scissors is a technology well known to people in the field, it will not be specifically described here.

[0038] In this article, while the saw chain 12 is adjusted in shape, the first driven rod 32 and the second driven rod 33 can be driven to adjust their angles through the mounting shaft 14. The first driven rod 32, the second driven rod 33 and the stabilizing shaft 31 cooperate with each other, and the mounting plate 24 is pushed upward on the positioning plate 4 through the positioning block 30. When the mounting plate 24 is raised, the first cutting head 26 and the second cutting head 27 in the mounting plate 24 cooperate with the limiting shaft 28 and the V-shaped slide groove 29 to achieve the shearing function. The shearing function is used to facilitate the cutting of small back branches, thereby effectively improving the shearing effect of the equipment.

[0039] The adjusting assembly is fixedly mounted on a connecting rod 34 on the lower end surface of the U-shaped frame plate 2, a fixing groove 35 is provided at the bottom end of the connecting rod 34, a fixing rod 36 is fixedly mounted on the top end of the support rod 1, a first threaded hole 37 is provided on the fixing groove 35, a second threaded hole 38 is provided on the fixing rod 36, the fixing groove 35 and the fixing rod 36 are inlaid, and the fixing groove 35 and the fixing rod 36 are fixed by bolts 39 and nuts 40, wherein the number of the first threaded hole 37 and the second threaded hole 38 is multiple, and the positions of the first threaded hole 37 and the second threaded hole 38 correspond to each other, ensuring that the bolts 39 and the nuts 40 can fix the fixing rod 36 inside the fixing groove 35.

[0040] In this article, by removing the bolts 39 and the nuts 40, adjusting the position of the fixing rod 36 in the fixing groove 35, and then fixing the bolts 39 and the nuts 40, the length between the support rod 1 and the connecting rod 34 is adjusted. By adjusting the length of the support rod 1, the pruning equipment can adapt to back branches of different heights, effectively improving the practicality of the equipment.

[0041] Working principle:

[0042] Steps for pruning thick back branches:

[0043] Step 1: The driving sprocket 7 is driven to rotate by the driving motor 6, and the first auxiliary sprocket 10 and the second auxiliary sprocket 11 on the triangular bracket plate 3 are rotated by the saw chain 12, and the saw chains 12 on the driving sprocket 7, the first auxiliary sprocket 10 and the second auxiliary sprocket 11 are in a transmission state, and the pre-cutting of the upper branches of the fruit tree is completed by the function of the saw chain 12;

[0044] Step 2: Adjust the positions of the first cutting head 26 and the second cutting head 27 to the pre-cutting positions, and lower the driving sprocket 7 on the lifting frame plate 5 by driving the electric push rod 13. At the same time, the first driving rod 18 and the second driving rod 19 on the L-shaped frame plate 16 cooperate with the two positioning shafts 15 to make the first auxiliary sprocket 10 and the second auxiliary sprocket 11 on the two positioning slide blocks 8 pass through the position limit of the positioning slide groove 21, so as to move inward, and the saw chain 12 in a triangular state will follow the position movement of the driving sprocket 7, the first auxiliary sprocket 10 and the second auxiliary sprocket 11;

[0045] Step three: When the positioning slider 8 moves inward, the positioning slider 8 will drive the first follower rod 32 and the second follower rod 33 to adjust the angle through the mounting shaft 14, and utilize the cooperation of the first follower rod 32, the second follower rod 33 and the stabilizing shaft 31 to push the mounting plate 24 upward on the positioning plate 4 through the positioning block 30. When the mounting plate 24 is raised, the first cutting head 26 and the second cutting head 27 in the mounting plate 24 will cooperate with the limiting shaft 28 and the V-shaped slide groove 29 to complete the direct cutting of the branches.

[0046] When pruning thinner back branches: you can directly prune the back branches by combining steps one and two;

[0047] When the problem of uneven end surface after pruning the back branches does not need to be considered: the back branches can be directly pruned through step 1;

[0048] When there is no need to consider the uneven end surface problem of back branches being cut, and the branches of the fruit trees are relatively dense, the shape of the triangular saw chain 12 can be adjusted through step 2 to make it in a parallelogram state, and the saw chain 12 can be used to directly complete the cutting of the back branches.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A back branch pruning device for fruit tree planting, comprising a support rod (1), characterized in that: The top end of the support rod (1) is provided with an adjustment component, a U-shaped frame plate (2) is fixedly mounted on the adjustment component, a symmetrically arranged triangular support plate (3) is fixedly mounted on the top end of the U-shaped frame plate (2), and pre-cutting components are arranged inside the U-shaped frame plate (2) and the triangular support plate (3); The U-shaped frame plate (2) is provided with an adjustment component, through which the shape of the pre-cutting component is adjusted; the triangular support plate (3) is fixedly mounted with a symmetrically arranged positioning frame plate (4), and a shearing component is provided inside the positioning frame plate (4).

2. The back branch pruning device for fruit tree planting according to claim 1, characterized in that: The pre-cutting assembly comprises a lifting frame plate (5) arranged on a U-shaped frame plate (2), a driving motor (6) being fixedly mounted on the lifting frame plate (5), a driving sprocket (7) being fixedly mounted on the output end of the driving motor (6), positioning sliders (8) being arranged at the left and right corners of the triangular support plate (3), auxiliary shafts (9) being rotatably mounted inside the two positioning sliders (8), and a first auxiliary sprocket (10) and a second auxiliary sprocket (11) being fixedly mounted on the two auxiliary shafts (9), respectively.

3. The back branch pruning device for fruit tree planting according to claim 2, characterized in that: The driving sprocket (7) and the first auxiliary sprocket (10) and the second auxiliary sprocket (11) are driven by a saw chain (12); the first auxiliary sprocket (10) and the second auxiliary sprocket (11) are arranged symmetrically on the left and right; and the driving sprocket (7) and the first auxiliary sprocket (10) and the second auxiliary sprocket (11) are arranged in a triangle.

4. The back branch pruning device for fruit tree planting according to claim 2, characterized in that: The adjustment assembly comprises an electric push rod (13) fixedly mounted on the inner bottom of the U-shaped frame plate (2); the side end surfaces of the two positioning slide blocks (8) are fixedly mounted with mounting shafts (14); the ends of the two mounting shafts (14) away from the positioning slide blocks (8) are fixedly mounted with positioning shafts (15); the outer side surface of the U-shaped frame plate (2) is fixedly mounted with an L-shaped frame plate (16); the interior of the L-shaped frame plate (16) is fixedly mounted with symmetrically arranged connecting shafts (17); the two connecting shafts (17) are respectively rotatably mounted with a first driving rod (18) and a second driving rod (19); the ends of the first driving rod (18) and the second driving rod (19) away from the connecting shaft (17) are respectively rotatably connected to the two positioning shafts (15).

5. The back branch pruning device for fruit tree planting according to claim 4, characterized in that: The output shaft of the electric push rod (13) is fixedly connected to the lower end surface of the lifting frame plate (5); the outer side surface of the U-shaped frame plate (2) is provided with a lifting groove (20); the lifting frame plate (5) is slidably connected to the lifting groove (20); the outer side surface of the triangular support plate (3) is provided with a positioning groove (21); the positioning slide block (8) is slidably connected to the positioning groove (21); a stabilizing groove (22) is provided inside the positioning groove (21); a stabilizing slide block (23) is fixedly installed on the positioning slide block (8); the stabilizing groove (22) is slidably connected to the stabilizing slide block (23).

6. The back branch pruning device for fruit tree planting according to claim 4, characterized in that: The shearing assembly comprises a mounting frame plate (24) slidably mounted between two positioning frame plates (4); a fixed shaft (25) is fixedly mounted inside the mounting frame plate (24); a first cutting head (26) and a second cutting head (27) are rotatably mounted on the fixed shaft (25); a limiting shaft (28) is fixedly mounted on one end of the first cutting head (26) and the second cutting head (27); a V-shaped sliding groove (29) is provided on the inner side surface of the mounting frame plate (24); and the limiting shaft (28) is slidably connected to the V-shaped sliding groove (29).

7. The back branch pruning device for fruit tree planting according to claim 6, characterized in that: A positioning block (30) is fixedly mounted on the lower end surface of the mounting frame plate (24), and a stabilizing shaft (31) is fixedly mounted on both ends of the positioning block (30). A first driven rod (32) and a second driven rod (33) are rotatably mounted on the stabilizing shaft (31), and one end of the first driven rod (32) and the second driven rod (33) away from the stabilizing shaft (31) are rotatably connected to two mounting shafts (14) respectively.

8. The back branch pruning device for fruit tree planting according to claim 1, characterized in that: The adjustment assembly is fixedly mounted on a connecting rod (34) on the lower end surface of the U-shaped frame plate (2); a fixing groove (35) is provided at the bottom end of the connecting rod (34); a fixing rod (36) is fixedly mounted on the top end of the support rod (1); a first threaded hole (37) is provided on the fixing groove (35); and a second threaded hole (38) is provided on the fixing rod (36).

9. The back branch pruning device for fruit tree planting according to claim 8, characterized in that: The fixing groove (35) and the fixing rod (36) are embedded, and the fixing groove (35) and the fixing rod (36) are fixed by bolts (39) and nuts (40).

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