Trunk anti-crawler sleeve structure
By designing a tree trunk anti-climbing sleeve structure and using multiple blocking designs to prevent climbers from climbing up, the problem of the short-lasting effect of insect repellents in existing technologies is solved, achieving a highly efficient insect control effect while saving costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 陈隽轩
- Filing Date
- 2025-06-08
- Publication Date
- 2026-06-09
AI Technical Summary
In the existing technology, the effect of tree trunk insecticides is not long-lasting, the cost is high, and they are dependent on insecticides, so the insect control effect is not long-lasting.
Design a tree trunk anti-climbing sleeve structure, including a double-clamp half sleeve, an inner retaining ring, a lower retaining ring, an upper retaining ring, a water groove and other multiple blocking structures, which are fixed to the tree trunk with screws to form multiple blocking paths to prevent crawlers from climbing up.
It significantly reduces the chances of insects climbing trees, reduces pest infestations, saves on pesticide costs, and eliminates the need to rely on chemical agents.
Smart Images

Figure CN224330061U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plant pest control, specifically to a tree trunk anti-climbing sleeve structure. Background Technology
[0002] During the growth of trees, because the trunk is in contact with the ground, crawling insects on the ground will climb up the tree along the trunk. A significant number of these crawling insects are harmful to trees, for example, they will eat the fruit, leaves, and bark, and may even bore into the trunk, endangering the tree's health.
[0003] To prevent crawling insects from climbing tree trunks, existing technologies, such as the Chinese utility model patent with application number "202221188092.7" entitled "A Slow-Release Insect Repellent Pack for Garden Plants," disclose the following solution: "A slow-release insect repellent pack for garden plants includes an installation component, with insect repellent components at both ends of the top of the installation component; the installation component includes a first clamping plate, with a second clamping plate hinged to one end of the first clamping plate, the other ends of the first and second clamping plates connected by a first bolt, a second bolt connected inside the first clamping plate, a clamping plate connected to one end of the second bolt, and an installation plate installed at the bottom of both the first and second clamping plates; the insect repellent component includes a fixing seat installed on the top of the installation plate, with a box inside the fixing seat, and the insect repellent agent inside the box."
[0004] The above method involves attaching a component to the tree trunk and placing an insecticide inside the component, which can reduce the number of insects climbing up the trunk to some extent. However, this method relies entirely on the insecticide's properties; once the insecticide loses its effectiveness, it ceases to be effective. Frequent replacement of the insecticide can lead to significant expenses. Utility Model Content
[0005] The purpose of this utility model is:
[0006] Design a tree trunk anti-climbing sleeve structure that is fixed to the tree trunk. Through the design of multiple blocking structures, it can block the path of crawlers climbing up the tree trunk, greatly reducing the chance of crawlers climbing up the tree trunk, and without the need for insect repellent, saving costs.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] A tree trunk anti-climbing sleeve structure includes two clamping halves, an inner retaining ring, a lower retaining ring, an upper retaining ring, and a water trough. The clamping halves are two in number and detachably connected by screws, forming a cylindrical structure when joined. The inner retaining ring is located on the inner wall of the clamping halves. The lower and upper retaining rings are located on the outer wall of the clamping halves, with their vertical positions corresponding. The cross-sections of both the upper and lower retaining rings extend downwards at an angle, and the end of the upper retaining ring has an inwardly tapered ring. The outer wall of the clamping halves also has a first smooth annular surface. The top of the clamping halves has an inverted conical portion, and the water trough is located on the inverted conical portion.
[0009] Furthermore, there are multiple inner retaining rings, which are arranged in an equidistant array from top to bottom along the inner wall of the clamping half; the cross-section of the inner retaining ring extends downward at an angle.
[0010] Furthermore, the lower retaining ring is located at the bottom of the clamping half-sleeve. When the two clamping half-sleeves are joined together, the lower retaining rings on the two clamping half-sleeves form a circular structure.
[0011] Furthermore, the first smooth annular surface is located between the lower stop ring and the upper stop ring, and the lower wall surface of the upper stop ring is provided with a second smooth annular surface; both the first smooth annular surface and the second smooth annular surface are made of glass.
[0012] Furthermore, the upper retaining ring is located in the upper middle part of the clamping half sleeve. When the two clamping half sleeves are connected, the upper retaining ring and the inner retaining ring on the two clamping half sleeves form a circular structure.
[0013] Furthermore, the radius of the top of the inverted cone is greater than the radius of the bottom, and the water trough is a groove with its opening facing upward; when the two clamping half-sleeves are joined together, the water troughs on the two clamping half-sleeves form a ring structure.
[0014] The beneficial effects of this utility model are as follows:
[0015] A tree trunk anti-climbing sleeve structure is fixed to the tree trunk. Through a multi-blocking structure design, including an inner blocking ring, a lower blocking ring, a first smooth ring surface, an upper blocking ring, an inner concave ring, a second smooth ring surface, an inverted cone, and a water groove, and with both the lower and upper blocking rings tilted downwards, it can block the path of crawling insects as they climb up the tree trunk in multiple ways. This prevents most crawling insects from passing through or causes them to fall to the ground, greatly reducing the probability of crawling insects climbing up the tree trunk. This reduces the impact of crawling insects on the tree and thus reduces insect infestation. Moreover, this structure does not require insect repellent, which helps to save costs. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the tree trunk anti-climbing sleeve structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the overall structure of the tree trunk anti-climbing sleeve structure of this utility model from another perspective.
[0018] Figure 3 This is a cross-sectional view of a tree trunk anti-climbing sleeve structure according to the present invention.
[0019] Figure 4 This is a schematic diagram of the structure of the tree trunk anti-climbing sleeve structure of this utility model, which is fixed on the tree trunk.
[0020] The attached figures are labeled as follows:
[0021] 1. Clamping half sleeve; 2. Screw; 3. Inner retaining ring; 4. Lower retaining ring; 5. First smooth ring surface; 6. Upper retaining ring; 7. Inner closing ring; 8. Second smooth ring surface; 9. Inverted cone part; 10. Water tank. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.
[0023] refer to Figures 1 to 4 A tree trunk anti-climbing sleeve structure includes a pair of half sleeves 1, an inner retaining ring 3, a lower retaining ring 4, an upper retaining ring 6, and a water trough 10; the pair of half sleeves 1 has a semi-cylindrical structure.
[0024] The clamping half-sleeves 1 consist of two parts and are detachably connected by screws 2. When the two clamping half-sleeves 1 are joined together, they form a cylindrical structure. This cylindrical structure clamps the trunk of the tree to be protected, thus fixing it to the trunk. Figure 4 The posture shown.
[0025] The inner retaining ring 3 is set on the inner wall of the clamp half sleeve 1; the inner retaining ring 3 is a rubber ring that can deform under pressure and is used to seal the gap between the inner wall of the clamp half sleeve 1 and the tree trunk to prevent crawling insects from passing through.
[0026] Both the lower stop ring 4 and the upper stop ring 6 are located on the outer wall of the clamping half sleeve 1, and the upper and lower positions of the upper stop ring 6 and the lower stop ring 4 correspond to each other; both the lower stop ring 4 and the upper stop ring 6 are used to block crawling insects.
[0027] The cross-sections of the upper baffle ring 6 and the lower baffle ring 4 both extend downward at an angle, increasing the chance of the crawler falling off when crawling along the lower surface of the upper baffle ring 6 and the lower baffle ring 4. An inner ring 7 is provided at the end of the upper baffle ring 6; the inner ring 7 is used to block the crawler.
[0028] The outer wall of the clamp half-sleeve 1 is also provided with a first smooth annular surface 5; the first smooth annular surface 5 is used to block crawling insects that rely on leg hairs or barbs to attach and crawl, so that such crawling insects cannot climb up.
[0029] The top of the clamp half-sleeve 1 is provided with an inverted cone 9, and a water tank 10 is located on the inverted cone 9. The water tank 10 is filled with water to prevent crawling insects from passing through.
[0030] There are multiple inner retaining rings 3, which are arranged in an equidistant array from top to bottom along the inner wall of the clamp half-sleeve 1; the cross-section of the inner retaining ring 3 extends downward at an angle, fully sealing the gap between the clamp half-sleeve 1 and the outer wall of the tree trunk, preventing crawling insects from passing through.
[0031] The lower stop ring 4 is located at the bottom of the clamping half sleeve 1. When the two clamping half sleeves 1 are connected, the lower stop ring 4 on the two clamping half sleeves 1 forms a circular structure, achieving 360° full-circumference blocking.
[0032] The first smooth annular surface 5 is located between the lower baffle ring 4 and the upper baffle ring 6, and the lower wall of the upper baffle ring 6 is provided with a second smooth annular surface 8. The first smooth annular surface 5 and the second smooth annular surface 8 are both made of glass, with low surface roughness and relatively smooth surface, so that most reptile legs cannot generate adhesion.
[0033] The upper retaining ring 6 is located in the upper middle part of the clamping half sleeve 1. When the two clamping half sleeves 1 are connected, the upper retaining ring 6 and the inner retaining ring 7 on the two clamping half sleeves 1 form a circular structure to achieve 360° full-circumference blocking.
[0034] The upper retaining ring 6 has an angle of 40-80° relative to the axis of the clamping half-sleeve 1; the lower retaining ring has an angle of 20-45° relative to the axis of the clamping half-sleeve 1, ensuring the blocking effect on the crawling of insects.
[0035] The radius of the top of the inverted cone 9 is larger than the radius of the bottom. The water trough 10 is a groove with its opening facing upwards. When the two clamping half-sleeves 1 are joined together, the water troughs 10 on the two clamping half-sleeves 1 form a ring structure, achieving 360° full-circumference blocking. The gap between the two clamping half-sleeves 1 can be filled with rubber near the water trough 10 to prevent water in the water trough 10 from flowing out from the gap between the two clamping half-sleeves 1.
[0036] The working principle of this utility model is as follows:
[0037] When the crawler climbs up the tree trunk from the ground and reaches the sleeve structure of this scheme, it cannot climb up the tree trunk inside the double-clamp half-sleeve 1 because the inside of the double-clamp half-sleeve 1 is sealed by multiple inner retaining rings 3.
[0038] When the crawler is blocked by the inner retaining ring 3 or the bottom of the clamp half-loop 1, if the crawler cannot climb over by crawling along the bottom of the clamp half-loop 1, the crawler will fall onto the tree trunk or the ground.
[0039] If the crawler climbs over the bottom of the double-clamped half-set 1, it will encounter the lower stop ring 4 as it climbs up the outer wall of the double-clamped half-set 1. Since the cross-section of the lower stop ring 4 is inclined downwards, if the crawler cannot climb along the lower surface of the lower stop ring 4, it will fall down onto the tree trunk or the ground.
[0040] If a crawler climbs over the lower retaining ring 4 and ascends along the outer wall of the double-clamp half-set 1, it will reach the first smooth annular surface 5. Since most crawling insects rely on the fine hairs or barbs on their legs to attach and crawl, when such a crawler reaches the first smooth annular surface 5, its legs cannot attach to the smooth surface of the first smooth annular surface 5, so it cannot continue to climb.
[0041] If the crawler can pass through the first smooth ring 5, it will reach the upper stop ring 6. When crawling along the lower surface of the upper stop ring 6, it will reach the second smooth ring 8. Since the second smooth ring 8 faces downward and has a relatively smooth surface, it can cause crawlers with leg adhesion less than their weight to fall onto the tree trunk or the ground.
[0042] If the crawler can pass through the second smooth toroidal surface 8, it will be blocked by the inward-facing ring 7 at the end of the upper stop ring 6.
[0043] If the reptile can pass through the inner ring 7, it will continue to climb upwards, climb to the top of the inverted cone 9, and reach the water tank 10; since most reptiles cannot swim, they will most likely drown in the water tank and will not be able to pass through it.
[0044] The above structure creates multiple barriers against crawling insects, preventing most insects from climbing onto the tree and reducing insect infestations.
[0045] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.
Claims
1. A tree trunk anti-climbing sleeve structure, characterized in that: The device includes a clamping half-sleeve (1), an inner retaining ring (3), a lower retaining ring (4), an upper retaining ring (6), and a water tank (10). There are two clamping half-sleeves (1) and they are detachably connected by screws (2). The two clamping half-sleeves (1) can form a cylindrical structure after being joined together. The inner retaining ring (3) is set on the inner wall of the clamping half-sleeve (1). The lower retaining ring (4) and the upper retaining ring (6) are both located on the outer wall of the clamping half-sleeve (1), and the upper and lower positions of the upper retaining ring (6) and the lower retaining ring (4) are corresponding. The cross-sections of the upper retaining ring (6) and the lower retaining ring (4) are both inclined downwards. The end of the upper retaining ring (6) is provided with an inner closing ring (7). The outer wall of the clamping half-sleeve (1) is also provided with a first smooth annular surface (5). The top of the clamping half-sleeve (1) is provided with an inverted cone portion (9), and the water tank (10) is located on the inverted cone portion (9).
2. The tree trunk anti-climbing sleeve structure according to claim 1, characterized in that: The number of inner retaining rings (3) is multiple, and they are arranged in an equidistant array from top to bottom along the inner wall of the clamping half sleeve (1); The cross-section of the inner retaining ring (3) extends downward at an angle.
3. The tree trunk anti-climbing sleeve structure according to claim 2, characterized in that: The lower retaining ring (4) is located at the bottom of the clamping half sleeve (1). When the two clamping half sleeves (1) are joined together, the lower retaining ring (4) on the two clamping half sleeves (1) forms a circular structure.
4. The tree trunk anti-climbing sleeve structure according to claim 3, characterized in that: The first smooth annular surface (5) is located between the lower stop ring (4) and the upper stop ring (6), and the lower wall of the upper stop ring (6) is provided with a second smooth annular surface (8); the first smooth annular surface (5) and the second smooth annular surface (8) are both made of glass.
5. The tree trunk anti-climbing sleeve structure according to claim 4, characterized in that: The upper retaining ring (6) is located in the upper middle part of the clamping half sleeve (1). When the two clamping half sleeves (1) are connected, the upper retaining ring (6) and the inner retaining ring (7) on the two clamping half sleeves (1) form a ring structure.
6. A tree trunk anti-climbing sleeve structure according to any one of claims 1-5, characterized in that: The radius of the top of the inverted cone (9) is greater than the radius of the bottom, and the water trough (10) is a groove with the opening facing upward; when the two clamping half sleeves (1) are connected, the water troughs (10) on the two clamping half sleeves (1) form a ring structure.