Portable self-locking fence fixing structure
Patent Information
- Application Number
- CN202521707619.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-12
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-08-12
AI Technical Summary
这种固定方式虽然连接牢固，但存在明显缺陷：当需要拆除栏杆进行作业时，必须采用切割方式破坏焊接部位，这不仅会对栏杆本身造成永久性损坏，而且重新安装时需要重新焊接，耗费大量的人力、物力和时间，同时焊接作业还可能受到现场环境条件的限制，增加了施工难度和安全风险
本实用新型通过在栏杆端部设置具有卡槽的自锁套筒，并在与之配合的自锁立柱内集成卡扣、弹性元件及解锁组件，使立柱插入时卡扣能够在弹簧作用下自动卡入卡槽完成锁定，拆卸时仅需操作两端控制钮即可使卡扣缩回实现解锁，无需对栏杆本体或固定件进行破坏性操作。该结构仅在两端立柱设置锁定机构，中间立柱采用普通套筒插接，显著简化了整体固定结构，减少了配件数量，降低了加工和维护成本。相比焊接或螺栓固定方式，该方案能够在保证栏杆稳固与安全的同时，实现快速、便捷的拆装，避免螺孔磨损和螺栓松动等问题，特别适用于需频繁拆装栏杆的水工建筑物检修巡查及施工场景，有效提高了作业效率与安全性。
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Figure CN224647541U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building safety protection facilities technology, specifically to a convenient self-locking railing fixing structure. Background Technology
[0002] As an important safety protection facility on hydraulic structures, railings are widely used in key areas such as wave walls, sump pits, shafts, and elevator shafts, serving a protective and separating function and playing a vital role in ensuring the safety of workers. During the daily operation and maintenance of hydraulic structures, equipment inspections, hoisting, and other operations are frequently required, often necessitating crossing railings or operating in a relatively large space.
[0003] In existing technologies, railings on hydraulic structures are mainly fixed in two ways. The first is welding, where the railing posts are directly welded to embedded parts or steel structure bases. While this method provides a strong connection, it has significant drawbacks: when the railing needs to be removed for work, the welded areas must be cut, causing permanent damage to the railing itself. Furthermore, reinstallation requires re-welding, consuming considerable manpower, resources, and time. Additionally, welding operations may be limited by site conditions, increasing construction difficulty and safety risks.
[0004] The second method is bolt fixing, where the railing posts are fixed to the base using bolts. Compared to welding, bolt fixing improves the railing's detachability to some extent. However, this method also presents several problems in practical applications: First, the bolt installation and removal process is relatively cumbersome, requiring specialized tools to disassemble and install each bolt individually, resulting in low efficiency. Second, over long-term use, repeated disassembly and assembly, as well as environmental factors, can cause bolts to rust and strip, and bolt holes can enlarge due to wear, leading to loose connections and severely affecting the stability and safety of the railing. Third, bolts and other fasteners require regular replacement and maintenance, increasing maintenance costs. Finally, in certain special environments, such as humid or highly corrosive hydraulic environments, the lifespan of bolts can be significantly shortened.
[0005] In actual operations, due to the difficulty in dismantling and assembling existing guardrails, workers often choose to forcibly cross them. This practice not only reduces work efficiency but, more importantly, poses serious safety hazards, easily leading to falls from heights and other accidents, threatening the lives of workers and the integrity of equipment. Furthermore, for hoisting operations of large equipment, the presence of guardrails severely impacts the hoisting path and working space. If the guardrails cannot be easily removed and restored, it will significantly increase the difficulty and time cost of the operation. Utility Model Content
[0006] The purpose of this utility model is to provide a convenient self-locking railing fixing structure that is stable and reliable, and can be easily disassembled and assembled, so as to improve the efficiency of inspection and maintenance and construction operations, while ensuring operational safety.
[0007] To achieve the above objectives, this utility model employs the following technical solution: A convenient self-locking railing fixing structure includes: A sleeve assembly pre-embedded in the foundation structure, the sleeve assembly including at least two self-locking sleeves and at least one ordinary sleeve, the self-locking sleeves being located at the end of the railing, the ordinary sleeves being located at the middle of the railing, and the inner wall of the self-locking sleeves being provided with a groove; A column assembly that can be detachably inserted into the sleeve assembly, the column assembly including a self-locking column that engages with the self-locking sleeve and a regular column that engages with the regular sleeve; The locking mechanism disposed within the self-locking column includes a retractable latch, an elastic element for driving the latch to extend, and an unlocking component for controlling the latch to retract. When the self-locking column is inserted into the self-locking sleeve, the buckle automatically extends under the action of the elastic element and locks into the slot. Unlocking is achieved by operating the unlocking component to retract the buckle.
[0008] Furthermore, the slot has a "7" shaped structure, including a vertical segment and a horizontal segment. The vertical segment is used to guide the insertion of the buckle, and the horizontal segment is used to limit the buckle.
[0009] Further: the unlocking component includes: A connecting rod, one end of which is connected to the buckle; A rotating shaft passes through the middle of the connecting rod and is fixed to the self-locking column; the connecting rod is rotatably connected to the rotating shaft. A control button is located on the connecting rod at the other end opposite to the buckle. A through hole perpendicular to the direction of the self-locking column is opened on the self-locking column. The control button is slidably installed in the through hole and extends out from the through hole. When the control button is pressed, the connecting rod rotates around the rotating axis, causing the buckle to retract into the self-locking column against the elastic force of the elastic element.
[0010] Furthermore, the locking mechanism also includes a spring limiting rod, which is fixed to the inner wall of the self-locking column to limit the compression stroke of the elastic element. The length of the spring limiting rod is set so that the buckle can be fully retracted into the self-locking column.
[0011] Furthermore, the elastic element is a spring, one end of which is fixedly connected to the buckle, and the other end abuts against the inner wall of the self-locking column.
[0012] Furthermore, the self-locking column is provided with a flange at a position at the same height as the top of the self-locking sleeve. The outer diameter of the flange is larger than the inner diameter of the self-locking sleeve to prevent rainwater from entering the self-locking sleeve.
[0013] Furthermore, the front end of the buckle is provided with a bevel. When the self-locking post is inserted into the self-locking sleeve, the bevel contacts the top edge of the self-locking sleeve, causing the buckle to retract automatically.
[0014] Furthermore, the bottom of both the self-locking sleeve and the ordinary sleeve is a closed structure, and the bottom length of the self-locking column and the ordinary column extends to the bottom of the corresponding sleeve.
[0015] Furthermore, the cross-sectional shape of the column assembly is any one of a circle, a square, or a polygon.
[0016] Compared with the prior art, the present invention has the following advantages: This invention features a self-locking sleeve with a groove at the end of the railing, and integrates a buckle, elastic element, and unlocking component within the corresponding self-locking post. When the post is inserted, the buckle automatically engages with the groove under spring action, locking the railing in place. Disassembly is achieved simply by operating the control buttons at both ends, retracting the buckle and unlocking the railing without any destructive operation to the railing body or fixing components. This structure simplifies the overall fixing structure by using locking mechanisms only at the two end posts, while the middle post uses a standard sleeve connection, significantly reducing the number of parts and lowering processing and maintenance costs. Compared to welding or bolt fixing methods, this solution ensures the railing's stability and safety while enabling quick and convenient assembly and disassembly, avoiding problems such as bolt hole wear and bolt loosening. It is particularly suitable for maintenance and inspection of hydraulic structures and construction scenarios requiring frequent railing disassembly and assembly, effectively improving work efficiency and safety. Attached Figure Description
[0017] Figure 1 This is a schematic cross-sectional view of the convenient self-locking railing fixing structure of this utility model on a concrete sidewall. Figure 2 This is a cross-sectional structural diagram of the end self-locking sleeve and self-locking post of the convenient self-locking railing fixing structure of this utility model.
[0018] In the picture: 1. Self-locking sleeve; 2. Self-locking column; 3. Slot; 4. Buckle; 5. Ordinary sleeve; 6. Ordinary column; 7. Flange; 21. Spring limit rod; 22. Rotating shaft; 41. Spring; 42. Connecting rod; 43. Control button. Detailed Implementation
[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] This embodiment provides a convenient self-locking railing fixing structure, installed at the edge of a concrete or other foundation structure, for stable installation and easy disassembly of the railing. The structure includes a sleeve assembly pre-embedded in the foundation structure, a post assembly detachably inserted into the sleeve assembly, and a locking mechanism disposed within the post assembly. The sleeve assembly includes at least two self-locking sleeves 1 and at least one ordinary sleeve 5. The self-locking sleeves 1 are located at both ends of the railing, and the ordinary sleeves 5 are located in the middle of the railing. The inner wall of the self-locking sleeve 1 has a groove 3, preferably a "7"-shaped structure, consisting of a vertical section and a horizontal section. The vertical section guides the latch 4 into place, and the horizontal section limits the latch 4 in the locked state. The inner wall of the ordinary sleeve 5 does not have a groove and is only used for inserting the middle post.
[0022] The post assembly includes a self-locking post 2 that mates with the self-locking sleeve 1 and a standard post 6 that mates with the standard sleeve 5. The bottom of the self-locking post 2 extends to the bottom of the corresponding sleeve to ensure the vertical stability of the railing. The self-locking post 2 has a flange 7 at a position at the same height as the top of the self-locking sleeve 1. The outer diameter of the flange 7 is larger than the inner diameter of the self-locking sleeve 1, effectively preventing rainwater from entering the sleeve. The bottom of the standard post 6 also extends to the bottom of the standard sleeve 5 to maintain the overall structural stability.
[0023] The locking mechanism is located inside the self-locking column 2 and includes a retractable latch 4, a spring 41 fixedly connected to the latch 4, a connecting rod 42 that drives the latch 4, a spring limiting rod 21 fixed to the inner wall of the self-locking column 2, and a control button 43 connected to the connecting rod 42. The front end of the latch 4 has a bevel. When the self-locking column 2 is inserted into the self-locking sleeve 1, the bevel contacts the top edge of the self-locking sleeve 1, causing the latch 4 to automatically retract into the self-locking column 2 during insertion, overcoming the elastic force of the spring 41. When the column is fully inserted into the sleeve, the latch 4 automatically pops out under the action of the spring 41 and engages in the slot 3 on the inner wall of the self-locking sleeve 1, thus completing the automatic locking. The spring limiting rod 21 limits the compression stroke of the spring 41, allowing the latch 4 to retract completely without affecting smooth insertion and removal.
[0024] The unlocking assembly includes a connecting rod 42 connected to the latch 4, a rotating shaft 22 passing through the middle of the connecting rod 42 and fixed to the self-locking post 2, and a control button 43 installed at the other end of the connecting rod 42. The self-locking post 2 has a through hole that mates with the control button 43, allowing the control button 43 to slide along the through hole and extend outside the post. When the railing needs to be disassembled, the operator simultaneously presses the two control buttons 43 located on the self-locking posts 2 at both ends of the railing. The connecting rod 42 rotates under the action of the rotating shaft 22, causing the latch 4 to retract into the self-locking post 2, disengaging from the slot 3. At this point, the railing can be lifted upwards to remove it entirely.
[0025] It should be noted that the actual length of the buckle 4 entering the slot 3 is only about 1cm. The spring 41 has a short rebound distance, and the diameter of the spring 41 is larger than that of the spring limit rod 21. Therefore, the compression trajectory of the spring 41 is not affected by the spring limit rod 21. The function of the spring limit rod 21 is to ensure that the tail of the spring 41 does not move up and down during use.
[0026] In practical implementation, the installation process of this convenient self-locking railing fixing structure is as follows: During the construction of the concrete foundation structure, a self-locking sleeve 1 is pre-embedded at the end of the railing, and a regular sleeve 5 is pre-embedded in the middle. The inner diameter of the sleeve is slightly larger than the outer diameter of the post, and the top is slightly higher than the top surface of the concrete structure. When installing the railing, the bottom ends of the self-locking post 2 and the regular post 6 are inserted into the corresponding sleeves respectively. During the insertion process, the buckle 4 of the self-locking post 2 will automatically retract and automatically lock into the slot 3 after it is in place, thus achieving locking. The regular post 6 in the middle is directly inserted into the regular sleeve 5 for positioning.
[0027] This structure can be widely used in maintenance and inspection passages, equipment hoisting areas, and construction projects that require temporary removal of railings. By incorporating a self-locking mechanism at the ends of the railings, unlocking can be completed simply by pressing the control buttons 43 at both ends during disassembly. The entire process requires no removal of bolts or cutting of welds, preventing damage to the railing itself or its fasteners. This significantly improves maintenance efficiency and reduces labor costs.
[0028] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A convenient self-locking railing fixing structure, characterized in that, include: A sleeve assembly pre-embedded in the foundation structure, the sleeve assembly including at least two self-locking sleeves and at least one ordinary sleeve, the self-locking sleeves being located at the end of the railing, the ordinary sleeves being located at the middle of the railing, and the inner wall of the self-locking sleeves being provided with a groove; A column assembly that can be detachably inserted into the sleeve assembly, the column assembly including a self-locking column that engages with the self-locking sleeve and a regular column that engages with the regular sleeve; The locking mechanism disposed within the self-locking column includes a retractable latch, an elastic element for driving the latch to extend, and an unlocking component for controlling the latch to retract. When the self-locking column is inserted into the self-locking sleeve, the buckle automatically extends under the action of the elastic element and locks into the slot. Unlocking is achieved by operating the unlocking component to retract the buckle.
2. The convenient self-locking railing fixing structure according to claim 1, characterized in that, The slot has a "7" shaped structure, including a vertical section and a horizontal section. The vertical section is used to guide the insertion of the buckle, and the horizontal section is used to limit the buckle.
3. The convenient self-locking railing fixing structure according to claim 1, characterized in that, The unlocking component includes: A connecting rod, one end of which is connected to the buckle; A rotating shaft passes through the middle of the connecting rod and is fixed to the self-locking column; the connecting rod is rotatably connected to the rotating shaft. A control button is located on the connecting rod at the other end opposite to the buckle. A through hole perpendicular to the direction of the self-locking column is opened on the self-locking column. The control button is slidably installed in the through hole and extends out from the through hole. When the control button is pressed, the connecting rod rotates around the rotating axis, causing the buckle to retract into the self-locking column against the elastic force of the elastic element.
4. The convenient self-locking railing fixing structure according to claim 3, characterized in that, The locking mechanism also includes a spring limiting rod, which is fixed to the inner wall of the self-locking column to limit the compression stroke of the elastic element. The length of the spring limiting rod is set so that the buckle can be fully retracted into the self-locking column.
5. The convenient self-locking railing fixing structure according to claim 1, characterized in that, The elastic element is a spring, one end of which is fixedly connected to the buckle, and the other end abuts against the inner wall of the self-locking column.
6. The convenient self-locking railing fixing structure according to claim 1, characterized in that, The self-locking column has a flange at a position at the same height as the top of the self-locking sleeve. The outer diameter of the flange is larger than the inner diameter of the self-locking sleeve to prevent rainwater from entering the self-locking sleeve.
7. The convenient self-locking railing fixing structure according to claim 1, characterized in that, The front end of the buckle has a bevel. When the self-locking post is inserted into the self-locking sleeve, the bevel contacts the top edge of the self-locking sleeve, causing the buckle to retract automatically.
8. The convenient self-locking railing fixing structure according to claim 1, characterized in that, The bottom of both the self-locking sleeve and the ordinary sleeve is a closed structure, and the bottom length of the self-locking column and the ordinary column extends to the bottom of the corresponding sleeve.
9. The convenient self-locking railing fixing structure according to any one of claims 1-8, characterized in that, The cross-sectional shape of the column assembly is any one of a circle, a square, or a polygon.