Ring cutter for ring cutting barks of anti-season syzygium samarangense
By designing a girdling knife with an adjustable mechanism, the problem of controlling the cutting depth and width of traditional girdling knives has been solved, enabling precise girdling of the bark. This design is suitable for wax apple trees of different diameters, avoids damage to the wood layer, and expands the scope of application.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional girdling tools are difficult to control accurately in terms of cutting depth and width, are prone to damaging the cambium layer of trees, and have a limited range of applications, failing to meet the needs of off-season wax apple cultivation.
A girdling tool was designed, comprising a connecting frame, a contact wheel, a grip, a connector, an internal threaded block, a bidirectional screw, a connecting rod, and a blade. Through a coarseness and depth adjustment mechanism, it can achieve precise cutting of bark, avoid damage to the wood layer, and adjust the girdling width and depth.
It enables precise girdling of the bark, adapts to wax apple trees of different diameters, avoids damage to the wood layer, expands the scope of application, and improves the stability and adaptability of the operation.
Smart Images

Figure CN224111736U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of girdling technology, specifically to a girdling knife for girdling the bark of off-season wax apple trees. Background Technology
[0002] As a tropical specialty fruit, the off-season cultivation of wax apples is of great significance for regulating market supply and improving economic benefits. Traditional off-season wax apple cultivation usually requires a long physiological regulation cycle, with the complete off-season regulation process typically taking 3-4 months. In the first month, the bark is manually girdled to scientifically and physically control the leaves. In the second month, flower bud formation is promoted. In the third and fourth months, the fruit develops and is ready for market. In this process, girdling is a key physical means of promoting flowering. The cutting depth of traditional girdling knives is generally difficult to control, lacking depth limits and protective designs, and is prone to accidentally damaging the cambium layer of the tree. Moreover, the cutting width of traditional girdling knives is difficult to adapt and adjust, limiting their applicability. Therefore, there is an urgent need for a girdling knife for girdling the bark of off-season wax apples. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a reasonably designed girdling knife for off-season wax apple girdling, thereby solving the aforementioned problems.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a connecting frame, abutting wheels, and a gripping handle. Several grooves on the inner arc wall of the connecting frame are provided with abutting wheels that are rotatably mounted on a rotating shaft. A gripping handle is fixedly mounted on the left side of the connecting frame.
[0005] It also includes:
[0006] The connector is located on the right side of the connector frame via a thickness adjustment mechanism. Internal thread blocks are movably arranged on both the upper and lower sides inside the connector, and a depth adjustment mechanism is provided on the connector.
[0007] A bidirectional screw, wherein the bidirectional screw is rotatably inserted into the connector through a bearing, and an internal threaded block is rotatably sleeved on the bidirectional screw through a thread, and a No. 1 adjustment handle is fixedly installed at the upper end of the bidirectional screw;
[0008] The connecting rod consists of two rods, which are fixedly mounted on two internal threaded blocks. The two connecting rods are movably inserted into two adapter slots opened on the front side of the connector. A blade is fixedly mounted on the front end of the connecting rod.
[0009] Furthermore, the coarseness adaptation adjustment mechanism includes:
[0010] The insertion rod is fixedly installed on the left side of the connector and is movably inserted into a slot opened on the connector frame. A first threaded rod is rotatably installed in the slot through a bearing, and the first threaded rod is inserted into the insertion rod through the thread.
[0011] The first control lever is rotatably mounted on the connector head via a bearing. The right end of the first control lever is fixedly equipped with the second adjustment handle. Several ribs with rounded corners are distributed on the first control lever at the left side of the connector head. The ribs and the left end of the first control lever are movably inserted into the first threaded rod.
[0012] Furthermore, the depth adjustment mechanism includes:
[0013] Two fixing rods are fixedly installed on one side of the connector head at the two adapter slots. A movable rod is movably inserted into the fixing rod. A roller frame is fixedly installed at the front end of the movable rod. A roller is rotatably installed on the roller frame through a rotating shaft.
[0014] The second threaded rod consists of two rods, which are respectively rotatably inserted into two fixed rods via bearings, and the movable rod is rotatably sleeved on the second threaded rod via threads;
[0015] The second control lever is inserted into the connector through a bearing, and the rear end of the second threaded rod is inserted into the connector and connected to the second control lever through a bevel gear pair.
[0016] The third adjustment handle is fixedly installed at the lower end of the second control lever, and the third control handle is located below the connector.
[0017] Furthermore, a guide rod is fixedly installed in the adapter groove, and the guide rod is movably inserted through the connecting rod. The guide rod is rotatably sleeved on the second control rod through a bearing.
[0018] Furthermore, a first scale line is provided on the right side wall of the movable rod, and a second scale line is provided on the upper side wall of the insertion rod.
[0019] Furthermore, an auxiliary handle is fixedly installed on the rear side wall of the connecting frame, and a rubber sleeve is fixedly fitted on the auxiliary handle.
[0020] Compared with the prior art, the beneficial effects of this utility model are: the girdling knife for off-season wax apple tree girdling can not only be adapted and adjusted according to the thickness of the wax apple tree, but also adjust the girdling width and depth of the bark, avoiding damage to the wood layer while also having a wider range of adaptability. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model.
[0022] Figure 2 This is an exploded view of the connecting frame, grip handle, connector, and thickness adjustment mechanism in this utility model.
[0023] Figure 3 This is a cross-sectional view of the connector and fixing rod in this utility model.
[0024] Figure 4 yes Figure 3 Enlarged view of part A in the image.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Connecting frame; 2. Abutment wheel; 3. Grip handle; 4. Connector head; 5. Internal threaded block; 6. Coarseness matching adjustment mechanism; 6. Insert rod; 6-1. Threaded rod No. 1; 6-2. Control rod No. 1; 6-3. Adjusting handle No. 2; 6-4. Rib; 6-5. Depth adjustment mechanism; 7. Fixed rod; 7-1. Movable rod; 7-2. Roller frame; 7-3. Roller; 7-4. Threaded rod No. 2; 7-5. Control rod No. 2; 7-6. Adjusting handle No. 3; 7-7. Bidirectional screw; 8. Adjusting handle No. 1; 9. Connecting rod; 10. Adaptor groove; 11. Blade; 12. Guide rod; 13. Scale line No. 1; 14. Scale line No. 2; 15. Auxiliary handle; 16. Rubber sleeve; 17. Detailed Implementation
[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] like Figures 1-4 As shown, this specific embodiment adopts the following technical solution: It includes a connecting frame 1, abutting wheels 2, and a gripping handle 3. Several grooves on the inner arc wall of the connecting frame 1 are provided with abutting wheels 2 rotatably mounted via rotating shafts. A gripping handle 3 is fixedly mounted on the left side of the connecting frame 1. An auxiliary handle 16 is fixedly mounted on the rear side wall of the connecting frame 1. A rubber sleeve 17 is fixedly fitted on the auxiliary handle 16. By gripping the auxiliary handle 16, the operator can improve the stability during the ring cutting operation. With the cooperation of the rubber sleeve 17, the comfort of gripping the auxiliary handle 16 can also be improved.
[0029] It also includes:
[0030] Connector 4, which is located on the right side of connector 1 via a thickness matching adjustment mechanism 6, has internal thread blocks 5 movably arranged on both the upper and lower sides inside connector 4, and a depth adjustment mechanism 7 is provided on connector 4.
[0031] A bidirectional screw 8 is inserted into the connector 4 via a bearing, and an internal threaded block 5 is sleeved on the bidirectional screw 8 via a thread. An adjustment handle 9 is fixedly installed at the upper end of the bidirectional screw 8.
[0032] Two connecting rods 10 are fixedly mounted on two internal threaded blocks 5, and the two connecting rods 10 are respectively movably inserted into two adapter slots 11 opened on the front side of the connector 4. A blade 12 is fixedly mounted on the front end of the connecting rod 10.
[0033] The coarseness adaptation adjustment mechanism 6 includes:
[0034] Insert rod 6-1, the insert rod 6-1 is fixedly set on the left side of connector 4, and the insert rod 6-1 is movably inserted into the slot opened on connector 1. A first threaded rod 6-2 is rotatably set in the slot through a bearing, and the first threaded rod 6-2 is inserted into the insert rod 6-1 through thread rotation.
[0035] The first control lever 6-3 is rotatably mounted on the connector 4 via a bearing. The right end of the first control lever 6-3 is fixedly equipped with the second adjustment handle 6-4. Several ribs 6-5 are evenly distributed with rounded corners on the first control lever 6-3 at the left side of the connector 4. The left ends of the ribs 6-5 and the first control lever 6-3 are movably inserted into the first threaded rod 6-2. By rotating the first threaded rod 6-2, the position of the first threaded rod 6-2 in the insert 6-1 can be adjusted, changing the distance between the connector 4 and the connecting frame 1 to accommodate wax apple trees of different thicknesses.
[0036] The depth adjustment mechanism 7 includes:
[0037] Fixed rod 7-1, there are two fixed rods 7-1, which are respectively fixedly installed on the connector 4 at one side of the two adapter slots 11. A movable rod 7-2 is movably inserted in the fixed rod 7-1. A roller frame 7-3 is fixedly installed at the front end of the movable rod 7-2. A roller 7-4 is rotatably installed on the roller frame 7-3 through a rotating shaft.
[0038] The second threaded rod 7-5 consists of two rods, which are respectively rotatably inserted into two fixed rods 7-1 via bearings, and the movable rod 7-2 is rotatably sleeved on the second threaded rod 7-5 via threads.
[0039] The second control lever 7-6 is rotatably inserted into the connector 4 via a bearing, and the rear end of the second threaded rod 7-5 is inserted into the connector 4 and is connected to the second control lever 7-6 via a bevel gear pair.
[0040] The third adjustment handle 7-7 is fixedly installed at the lower end of the second control lever 7-6, and is located below the connector 4. By rotating the second threaded rod 7-5, the distance between the roller frame 7-3 and the fixed rod 7-1 can be adjusted, so that when the roller 7-4 contacts the bark, the depth to which the blade 12 is inserted into the bark can be controlled, avoiding damage to the woody layer of the wax apple due to insufficient experience of the operator. A guide rod 13 is fixedly installed in the adapter groove 11, and the guide rod 13 is movably inserted through the connecting rod 10. The guide rod 13 is rotatably mounted on the second control rod 7-6 via a bearing. The guide rod 13 not only provides auxiliary guidance for the movement of the connecting rod 10 in the adapter groove 11, improving the stability of the connecting rod 10, but also provides protection for the second control rod 7-6. The right side wall of the movable rod 7-2 is provided with a first scale line 14, and the upper side wall of the insertion rod 6-1 is provided with a second scale line 15. Through the cooperation of the first scale line 14 and the second scale line 15, the distance between the connector 4 and the connecting frame 1 and the distance between the roller frame 7-3 and the fixed rod 7-1 can be precisely controlled.
[0041] When using this utility model, hold the handle 3 and the auxiliary handle 16 with both hands respectively, and put the contact wheel 2 against the bark of the wax apple tree. Then insert the blade 12 into the bark, and at the same time, the rollers 7-4 also abut against the bark to limit the depth of the blade 12 inserted into the bark. Then you can rotate around the wax apple tree to make a ring cut.
[0042] If the wax apple tree is too thick and the contact wheel 2 cannot reach the bark, the second adjustment handle 6-4 can be rotated. The second adjustment handle 6-4 drives the first control rod 6-3 to rotate. The first control rod 6-3 drives the first threaded rod 6-2 to rotate through the rib 6-5. With the cooperation of the insert rod 6-1, the distance between the connector 4 and the connecting frame 1 can be adjusted to accommodate thicker wax apple trees. When it is necessary to adjust the ring-cutting width, the first adjustment handle 9 can be rotated. The first adjustment handle 9 drives the bidirectional screw 8 to rotate, so that the internal thread blocks 5 on both sides move synchronously in opposite directions. The internal thread blocks 5 pass through... The connecting rod 10 drives the blade 12 to move, adjusting the distance between the two blades 12 to adjust the girdling width. When it is necessary to control the girdling depth, the third adjustment handle 7-7 can be rotated. The third adjustment handle 7-7 drives the second control rod 7-6 to rotate. The second control rod 7-6 drives the second threaded rods 7-5 on both sides to rotate synchronously through the bevel gear pair, so that the movable rod 7-2 drives the roller frame 7-3 to move, adjusting the distance between the roller frame 7-3 and the fixed rod 7-1. This allows the roller 7-4 to touch the bark, changing the depth to which the blade 12 is inserted into the bark.
[0043] Compared with the prior art, the beneficial effects of this utility model are:
[0044] With the cooperation of the depth adjustment mechanism 7, not only can the girdling depth be limited during girdling and the girdling depth be effectively controlled, but it can also be adjusted according to the bark thickness and other factors.
[0045] With the cooperation of the thickness adaptation adjustment mechanism 6, the distance between the connector 4 and the connector frame 1 can be adjusted to adapt to wax apple trees of different thicknesses;
[0046] The distance between the two blades 12 can be adjusted by the cooperation of the internal thread block 5, the bidirectional screw 8, the first adjustment handle 9 and the connecting rod 10, so as to control the circumferential cutting depth.
[0047] The guide rod 13 not only provides auxiliary guidance for the movement of the connecting rod 10 within the adapter slot 11, improving the stability of the connecting rod 10, but also provides protection for the second control rod 7-6.
[0048] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A ring-cutting knife for ring-cutting bark of off-season wax apple trees, comprising a connecting frame (1), a contact wheel (2) and a grip (3), wherein the contact wheel (2) is rotatably disposed in several grooves opened on the inner arc wall of the connecting frame (1) via a rotating shaft, and the grip (3) is fixedly disposed on the left side of the connecting frame (1). characterized in that It also includes: Connector (4), the connector (4) is located on the right side of the connector frame (1) through a thickness adaptation adjustment mechanism (6), and internal thread blocks (5) are movably arranged on both the upper and lower sides inside the connector (4), and a depth adjustment mechanism (7) is provided on the connector (4). A bidirectional screw (8) is inserted into the connector (4) by means of a bearing, and an internal thread block (5) is sleeved on the bidirectional screw (8) by means of a thread. An adjustment handle (9) is fixedly installed at the upper end of the bidirectional screw (8). There are two connecting rods (10), which are fixedly installed on two internal threaded blocks (5) respectively. The two connecting rods (10) are respectively movably inserted into two adapter slots (11) opened on the front side of the connector (4). A blade (12) is fixedly installed at the front end of the connecting rod (10).
2. The girdling knife for counter-seasoned Psidium guajava girdling according to claim 1, characterized in that: The coarseness adaptation adjustment mechanism (6) includes: Insert rod (6-1), the insert rod (6-1) is fixedly set on the left side of the connector (4), and the insert rod (6-1) is movably inserted into the slot opened on the connector (1). A first threaded rod (6-2) is rotatably set in the slot through a bearing, and the first threaded rod (6-2) is inserted into the insert rod (6-1) through thread rotation. The first control lever (6-3) is rotatably mounted on the connector (4) via a bearing. The right end of the first control lever (6-3) is fixedly equipped with the second adjustment handle (6-4). Several ribs (6-5) are evenly distributed at the left side of the connector (4) on the first control lever (6-3). The left ends of the ribs (6-5) and the first control lever (6-3) are movably inserted into the first threaded rod (6-2).
3. A girdling knife for counter-seasoned Psidium guajava girdling according to claim 2, characterized in that: The depth adjustment mechanism (7) includes: Fixed rod (7-1), there are two fixed rods (7-1), which are respectively fixedly installed on the connector (4) at one side of the two adapter slots (11). A movable rod (7-2) is movably inserted in the fixed rod (7-1). A roller frame (7-3) is fixedly installed at the front end of the movable rod (7-2). A roller (7-4) is rotatably installed on the roller frame (7-3) through a rotating shaft. The second threaded rod (7-5) consists of two rods, which are respectively rotatably inserted into two fixed rods (7-1) via bearings. The movable rod (7-2) is rotatably sleeved on the second threaded rod (7-5) via threads. The second control lever (7-6) is inserted into the connector (4) by rotating through a bearing. The rear end of the second threaded rod (7-5) is inserted into the connector (4) and is connected to the second control lever (7-6) by transmission through a bevel gear pair. The third adjustment handle (7-7) is fixedly installed at the lower end of the second control lever (7-6), and the third adjustment handle (7-7) is located below the connector (4).
4. The girdling knife for counter-seasoned Psidium guajava girdling according to claim 3, characterized in that: A guide rod (13) is fixedly installed in the adapter groove (11), and the guide rod (13) is movably inserted on the connecting rod (10). The guide rod (13) is rotated and sleeved on the second control rod (7-6) through the bearing.
5. A girdling knife for girdling the bark of off-season wax apple trees according to claim 3, characterized in that: The movable rod (7-2) has a first scale line (14) on its right side wall, and the insert rod (6-1) has a second scale line (15) on its upper side wall.
6. A girdling knife for girdling the bark of off-season wax apple trees according to claim 1, characterized in that: An auxiliary handle (16) is fixedly installed on the rear side wall of the connecting frame (1), and a rubber sleeve (17) is fixedly fitted on the auxiliary handle (16).