A safety sign with an angle-adjustable rotating positioning structure
Patent Information
- Application Number
- CN202522259740.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0004]本实用新型意在提供一种角度可调旋转定位结构的安全标识牌，主要用于解决现有技术存在的调节与锁定机构繁琐，通常依赖螺栓紧固，操作不便且易松动的技术问题
1.工作原理：通过水平与俯仰两套机构实现，水平旋转机构使标识牌可绕立柱进行单向旋转，其核心在于旋转完成后，可通过调节组件主动提升棘爪的啮合位置，消除间隙，形成抗振动、防松动的机械冗余锁紧，确保水平角度长期稳固，俯仰转动机构则通过弹簧加载的卡接环组件实现标识牌俯仰角度的无级调节，手动拉动即可解锁调整，松开后靠弹簧力自动锁紧，保持角度，该方案实现了水平与俯仰方向的便捷、可靠调节与长期稳定保持。
Smart Images
Figure CN224769246U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety sign technology, specifically a safety sign with an adjustable rotational positioning structure. Background Technology
[0002] Adjustable-angle safety signs exist to meet the needs of different scenarios and viewing heights for the optimal viewing angle of signage information. They need to be able to flexibly adjust their direction to align with the target audience, while maintaining a stable set angle over long periods in complex environments (such as vibration and wind) to ensure the continued effectiveness of their warning or instruction function.
[0003] Existing adjustable-angle safety signs mostly achieve angle adjustment through threaded connections between the post, connector, and sign body. However, existing technical solutions have the following drawbacks in actual operation: (1) The adjustment and locking mechanism is cumbersome and usually relies on bolt fastening, which is inconvenient to operate and easy to loosen; (2) The pitch angle adjustment operation is cumbersome, and it is impossible to unlock quickly and lock automatically. Furthermore, the angle is prone to drift under the action of external forces such as wind vibration. Utility Model Content
[0004] This utility model aims to provide a safety sign with an adjustable rotational positioning structure, mainly to solve the technical problems of existing technology where the adjustment and locking mechanisms are cumbersome, usually rely on bolt fastening, are inconvenient to operate, and are prone to loosening.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A safety sign with an adjustable rotational positioning structure includes a base, a column fixedly connected to the top surface of the base, a U-shaped rotating frame above the column, a safety sign body mounted on the U-shaped rotating frame, a horizontal rotating mechanism between the U-shaped rotating frame and the column, the horizontal rotating mechanism including a horizontal rotation component and an adjustment component, the U-shaped rotating frame and the column being connected via the horizontal rotating mechanism, a pitch rotating mechanism on the U-shaped rotating frame including a pitch rotation component and a limiting component, and the safety sign body being connected to the U-shaped rotating frame via the pitch rotating mechanism.
[0006] The working principle and beneficial effects of this utility model: 1. Working Principle: The system utilizes two mechanisms: a horizontal and a vertical rotation mechanism. The horizontal rotation mechanism allows the sign to rotate unidirectionally around the column. The core feature is that after rotation, the engagement position of the pawl can be actively raised by the adjustment component to eliminate gaps and form a mechanical redundancy locking mechanism that resists vibration and prevents loosening, ensuring long-term stability of the horizontal angle. The vertical rotation mechanism uses a spring-loaded snap-fit ring assembly to achieve stepless adjustment of the sign's vertical angle. Manual pulling unlocks and adjusts the angle, and the spring force automatically locks it in place to maintain the angle. This solution achieves convenient, reliable adjustment and long-term stable maintenance of both horizontal and vertical directions.
[0007] 2. Beneficial effects: (1) The existing technology solves the technical problem of horizontal adjustment by setting a rotatable connecting seat. However, the existing bolt locking method has problems such as stripping, inability to adjust after corrosion, or insufficient locking force. This solution solves the technical problem of loosening due to vibration under long-term use of the horizontal angle by setting a horizontal rotation mechanism, using the cooperation of end face ratchet and pre-tightening pawl, and achieving redundant locking through thread fine adjustment mechanism.
[0008] (2) This solution sets a limit component in the pitch rotation mechanism, which realizes quick unlocking, stepless adjustment and automatic locking, and solves the technical problems of inconvenient pitch angle adjustment and unreliable fixation.
[0009] A safety sign with an adjustable rotational positioning structure includes a base, a column fixedly connected to the top surface of the base, a U-shaped rotating frame above the column, a safety sign body mounted on the U-shaped rotating frame, a horizontal rotating mechanism between the U-shaped rotating frame and the column, the horizontal rotating mechanism including a horizontal rotation component and an adjustment component, the U-shaped rotating frame and the column being connected via the horizontal rotating mechanism, a pitch rotating mechanism on the U-shaped rotating frame including a pitch rotation component and a limiting component, and the safety sign body being connected to the U-shaped rotating frame via the pitch rotating mechanism.
[0010] Preferably, the horizontal rotation assembly includes a first end-face ratchet and a second end-face ratchet. The first end-face ratchet is located above the column, and the second end-face ratchet is located above the first end-face ratchet. The bottom surface of the first end-face ratchet is fixedly connected to the top surface of the column, and the top surface of the second end-face ratchet is fixedly connected to the bottom surface of the U-shaped rotating frame. A rotating column is rotatably mounted on the top surface of the column, and the rotating column passes through the first end-face ratchet and the second end-face ratchet. The second end-face ratchet is fixedly connected to the rotating column. Through the cooperation of the first end-face ratchet and the second end-face ratchet, the horizontal rotation of the U-shaped rotating frame relative to the column is realized. The first end-face ratchet is fixed on the column, and the second end-face ratchet is fixed on the U-shaped rotating frame. The rotating column allows the second end-face ratchet to drive the U-shaped rotating frame to rotate. At the same time, the ratchet structure provides a positioning function after rotation, ensuring that the sign can be adjusted and maintained in position in the horizontal direction.
[0011] Preferably, the adjusting assembly includes a first pawl and a second pawl, located between a first end-face ratchet and a second end-face ratchet, on one side of the rotating column. The first pawl engages with the first end-face ratchet, and the second pawl engages with the second end-face ratchet. An L-shaped connecting rod is fixedly connected to the periphery of the column, located below the first end-face ratchet. A sliding groove is formed at the top of the L-shaped connecting rod, and a sliding rod is slidably connected within the sliding groove. A compression spring is provided below the sliding rod, with one end fixedly connected to the bottom end of the sliding rod and the other end fixedly connected to the bottom surface of the inner wall of the sliding groove. A clearance hole is formed on the side wall of the sliding rod, and two semi-circular... The connecting rod consists of two symmetrically arranged semi-circular connecting rods. One end of each semi-circular connecting rod is fixedly connected to a counterweight. The other end of the lower semi-circular connecting rod is fixedly connected to a first pawl and to the inner wall of a clearance hole. The other end of the upper semi-circular connecting rod is fixedly connected to a second pawl and to the inner wall of the clearance hole. The adjusting assembly controls the locking and unlocking of horizontal rotation by engaging the first and second end-face ratchet wheels, respectively. Under the action of a compression spring, the sliding rod drives the pawl to move via the semi-circular connecting rod, allowing the second pawl to change position. This allows the user to adjust the horizontal angle and lock the position. The counterweight design helps stabilize the movement of the pawl.
[0012] Preferably, the top end of the sliding rod has a threaded groove that passes through the top end of the sliding rod and communicates with the clearance hole. A threaded post is threadedly connected inside the threaded groove, and a rotating block is fixedly connected to the bottom end of the threaded post. The rotating block has a convex cross-section. The upper semi-circular connecting rod has a rotating groove that matches the rotating block. The rotating block is located inside the rotating groove and is rotatably connected to the inner wall of the rotating groove. The cooperation between the threaded groove and the threaded post at the top end of the sliding rod allows for fine adjustment of the position of the semi-circular connecting rod inside the sliding rod. Rotating the threaded post drives the rotating block, thereby adjusting the up-and-down movement of the upper semi-circular connecting rod, and thus controlling the engagement depth between the second pawl and the second end face ratchet to achieve locking.
[0013] Preferably, the pitch rotation assembly includes two rectangular holes, which are located at the upper ends of the U-shaped rotating frame. Each rectangular hole is slidably connected to a rectangular post, and each rectangular post has a rotation hole. Rotation shafts are fixedly connected to the left and right side walls of the safety sign body. The rotation shafts are located in the corresponding rotation holes and are rotatably connected to the inner walls of the rotation holes. The pitch rotation assembly allows the safety sign body to adjust its pitch angle on the U-shaped rotating frame. The rotation shafts rotate within the rotation holes, allowing the sign to rotate around a horizontal axis and adjust the vertical angle to suit different viewing needs.
[0014] Preferably, the limiting component includes two first locking rings, which are respectively located on the left and right sides of the safety sign body. A second locking ring is fixedly connected to the side of the rectangular post closest to the first locking ring, and the second locking ring engages with the corresponding first locking ring. The rotating shaft passes through the corresponding first and second locking rings and is rotatably connected to the corresponding second locking ring. A handle is fixedly connected to the end of the rectangular post away from the second locking ring. A tension spring is sleeved on the periphery of the rectangular post. One end of the tension spring is fixedly connected to the handle, and the other end of the tension spring is fixedly connected to the side wall of the U-shaped rotating frame. The limiting component locks the pitch angle of the safety sign through the engagement of the first and second locking rings. The tension spring causes the rectangular post to tend inward, keeping the locking rings engaged. When adjustment is needed, the handle is pulled to overcome the spring force, causing the locking rings to separate. After adjustment, the handle is released to achieve quick locking.
[0015] Preferably, both the first and second locking rings are provided with a plurality of serrations arranged in a circular array. The serration design on the first and second locking rings increases the friction and engagement strength between them, prevents accidental slippage under external force, ensures that the pitch angle can be firmly fixed after adjustment, and improves reliability.
[0016] Preferably, the distance between the first end face ratchet and the second end face ratchet is greater than the distance between the farthest ends of the first pawl and the second pawl. The first pawl and the second pawl are floating between the first end face ratchet and the second end face ratchet. This design ensures that the pawl has sufficient floating space between the ratchets, avoiding interference or jamming between the pawl and the ratchet during rotation, making horizontal rotation adjustment smoother and more reliable. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of a safety sign with an adjustable rotational positioning structure according to this utility model patent. Figure 2 This is a structural diagram of the horizontal rotation mechanism of a safety sign with an adjustable rotational positioning structure, which is the subject of this utility model patent. Figure 3 This is a cross-sectional view of the L-shaped connecting rod area of a safety sign with an adjustable rotational positioning structure according to this utility model patent. Figure 4 This is an exploded view of the sliding rod area of a safety sign with an adjustable rotational positioning structure according to this utility model patent. Figure 5 This is a structural diagram of a U-shaped rotating frame for a safety sign with an adjustable rotational positioning structure, which is the subject of this utility model patent. Figure 6 This is an exploded view of the rectangular column area of a safety sign with an adjustable rotation positioning structure according to this utility model patent.
[0018] The reference numerals in the accompanying drawings of the instruction manual include: 1. Base; 2. Column; 3. U-shaped rotating frame; 4. Safety sign body; 5. First end face ratchet; 6. Second end face ratchet; 7. Rotating column; 8. First pawl; 9. Second pawl; 10. L-shaped connecting rod; 11. Sliding groove; 12. Compression spring; 13. Sliding rod; 14. Clearance hole; 15. Semi-circular connecting rod; 16. Counterweight; 17. Threaded groove; 18. Threaded column; 19. Rotating block; 20. Rotating groove; 21. Rectangular hole; 22. Rectangular column; 23. Rotating hole; 24. Rotating shaft; 25. First locking ring; 26. Second locking ring; 27. Handle; 28. Tension spring. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] like Figure 1 - Figure 6 As shown, a safety sign with an adjustable rotation positioning structure includes a base 1, a column 2 fixedly connected to the top surface of the base 1, a U-shaped rotating frame 3 above the column 2, a safety sign body 4 mounted on the U-shaped rotating frame 3, a horizontal rotating mechanism between the U-shaped rotating frame 3 and the column 2, the horizontal rotating mechanism including a horizontal rotation component and an adjustment component, the U-shaped rotating frame 3 and the column 2 being connected through the horizontal rotating mechanism, a pitch rotating mechanism on the U-shaped rotating frame 3, the pitch rotating mechanism including a pitch rotation component and a limiting component, and the safety sign body 4 being connected to the U-shaped rotating frame 3 through the pitch rotating mechanism.
[0021] More specifically, the horizontal rotation assembly includes a first end face ratchet 5 and a second end face ratchet 6. The first end face ratchet 5 is located above the column 2, and the second end face ratchet 6 is located above the first end face ratchet 5. The bottom surface of the first end face ratchet 5 is fixedly connected to the top surface of the column 2, and the top surface of the second end face ratchet 6 is fixedly connected to the bottom surface of the U-shaped rotating frame 3. A rotating column 7 rotates at the top surface of the column 2, passing through the first end face ratchet 5 and the second end face ratchet 6. The second end face ratchet 6 is fixedly connected to the rotating column 7. The rotating column 7 acts as a pivot, connecting the fixed column 2 (via the first end face ratchet 5) to the movable U-shaped rotating frame 3 (via the second end face ratchet 6) and transmitting rotational motion. This creates a structural foundation that allows the U-shaped rotating frame 3 to rotate around an axis relative to the column 2, while also providing a target object (the first end face ratchet 5 and the second end face ratchet 6) for the function of the adjustment assembly, thus integrating the rotational and locking functions.
[0022] More specifically, the adjustment assembly includes a first pawl 8 and a second pawl 9. The first pawl 8 and the second pawl 9 are located between the first end face ratchet 5 and the second end face ratchet 6. The first pawl 8 and the second pawl 9 are located on one side of the rotating column 7. The first pawl 8 is engaged with the first end face ratchet 5, and the second pawl 9 is engaged with the second end face ratchet 6. An L-shaped connecting rod 10 is fixedly connected to the periphery of the column 2. The L-shaped connecting rod 10 is located below the first end face ratchet 5. A sliding groove 11 is opened at the top of the L-shaped connecting rod 10. A sliding rod 13 is slidably connected in the sliding groove 11. A compression spring 12 is provided below the sliding rod 13. One end of the compression spring 12 is fixedly connected to the bottom end of the sliding rod 13, and the other end of the compression spring 12 is fixedly connected to the bottom surface of the inner wall of the sliding groove 11. A side wall of the sliding rod 13 is provided with... There is a clearance hole 14, and two semi-circular connecting rods 15 are arranged symmetrically inside the clearance hole 14. One end of the semi-circular connecting rod 15 is fixedly connected to a counterweight 16. The other end of the lower semi-circular connecting rod 15 is fixedly connected to the first pawl 8. The lower semi-circular connecting rod 15 is fixedly connected to the inner wall of the clearance hole 14. The other end of the upper semi-circular connecting rod 15 is fixedly connected to the second pawl 9. The upper semi-circular connecting rod 15 is slidably connected to the inner wall of the clearance hole 14. The compression spring 12 acts on the sliding rod 13, and the two semi-circular connecting rods 15 synchronously control the engagement and disengagement of the first pawl 8 and the second pawl 9 with the corresponding ratchet. The counterweight 16 ensures that the center of gravity of the pawl is biased towards the engagement direction, realizing bidirectional locking control of horizontal rotation.
[0023] More specifically, the top of the sliding rod 13 is provided with a threaded groove 17, which passes through the top of the sliding rod 13 and is connected to the clearance hole 14. A threaded post 18 is threadedly connected inside the threaded groove 17, and a rotating block 19 is fixedly connected to the bottom of the threaded post 18. The cross-section of the rotating block 19 is convex. A rotating groove 20 matching the rotating block 19 is provided on the upper semi-circular connecting rod 15. The rotating block 19 is located in the rotating groove 20 and is rotatably connected to the inner wall of the rotating groove 20. The rotational motion is converted into linear motion through the threaded pair, thereby precisely pushing or releasing the upper semi-circular connecting rod 15. This realizes the adjustment of the pressure applied by the second pawl 9 to the second end face ratchet 6, which allows the personnel to lock the second end face ratchet 6 by adjusting the position of the second pawl 9.
[0024] More specifically, the pitch rotation assembly includes two rectangular holes 21, which are located at the upper ends of the U-shaped rotating frame 3. Each rectangular hole 21 is slidably connected to a rectangular post 22, and each rectangular post 22 has a rotation hole 23. Rotation shafts 24 are fixedly connected to the left and right side walls of the safety sign body 4. The rotation shafts 24 are located in the corresponding rotation holes 23. The rotation shafts 24 are rotatably connected to the inner walls of the rotation holes 23, separating the function of providing a rotation fulcrum (achieved by the rotation shaft 24 in the rotation hole 23) from the function of controlling axial displacement (achieved by the rectangular post 22 sliding in the rectangular hole 21). This ensures that the rotation axis of the safety sign body 4 is stable and rotates smoothly when the pitch angle is adjusted. At the same time, the pure linear motion of the rectangular post 22 provides precise guidance for the engagement and disengagement of the limit assembly, avoiding jamming and making the pitch adjustment action smooth and reliable.
[0025] More specifically, the limiting component includes two first locking rings 25, which are located on the left and right sides of the safety sign body 4, respectively. A second locking ring 26 is fixedly connected to the side of the rectangular post 22 closest to the first locking ring 25. The second locking ring 26 engages with the corresponding first locking ring 25. A rotating shaft 24 passes through the corresponding first locking ring 25 and the second locking ring 26, and is rotatably connected to the corresponding second locking ring 26. A handle 27 is fixedly connected to the end of the rectangular post 22 away from the second locking ring 26. A tension spring 28 is sleeved around the periphery of the rectangular post 22. One end of the tension spring 28 is fixedly connected to the handle 27, and the other end of the tension spring 28 is fixedly connected to the side wall of the U-shaped rotating frame 3. Based on the continuous elastic restoring force provided by the tension spring 28, the rectangular column 22 is forced to drive the second locking ring 26 to always have a tendency to engage with the first locking ring 25, forming a "normally closed" locking mechanism. That is, when no manual operation is performed, the pitch angle is always in a locked safe state. Only by actively pulling the handle 27 outward can the spring force be overcome to unlock and adjust. Once released, it will automatically lock, which greatly enhances the safety and convenience of use.
[0026] More specifically, both the first locking ring 25 and the second locking ring 26 are provided with several serrations arranged in a ring array. The interlocking of the serration tips generates huge mechanical interference and engagement depth, which significantly increases the normal force and friction of the contact surface. This greatly enhances the resistance to reverse torque, so that the pitch angle can be effectively prevented from slipping when subjected to external forces such as the weight of the sign, wind load or accidental contact, thus ensuring the absolute reliability and anti-interference capability of pitch positioning.
[0027] More specifically, the distance between the first end face ratchet 5 and the second end face ratchet 6 is greater than the distance between the farthest ends of the first pawl 8 and the second pawl 9. The first pawl 8 and the second pawl 9 are floating between the first end face ratchet 5 and the second end face ratchet 6, providing a necessary axial movement margin for the entire pawl assembly. This avoids the first pawl 8 and the second pawl 9 from rigidly engaging with the upper and lower ratchets simultaneously, ensuring that the first pawl 8 and the second pawl 9 can adaptively find the engagement position under the action of spring force during rotation, thus improving the reliability of the operation.
[0028] As can be seen from the above, the specific embodiments of this utility model are as follows: In the non-adjustable state, the compression spring 12 pushes the sliding rod 13 upward, thereby causing the first pawl 8 and the second pawl 9 to engage with the fixed first end face ratchet 5 and the movable second end face ratchet 6 respectively, assisted by the gravity of the counterweight 16, through the two semi-circular connecting rods 15. In this state, the tips of the pawls abut against the vertical surface of the ratchet teeth, effectively preventing the U-shaped rotating frame 3 from rotating in the opposite direction (i.e., rotating in the opposite direction to the allowed direction of the pawls), achieving natural locking. When it is necessary to adjust the horizontal angle in the allowed direction (e.g., clockwise), the operator directly applies force to rotate the U-shaped rotating frame 3. The U-shaped rotating frame 3 drives the second end face ratchet 6 to rotate together. When the second end face ratchet 6 starts to rotate, the inclined surface of its teeth will exert force on the tip of the second pawl 9 that is engaged with it. A downward force overcomes part of the elastic force of the compression spring 12 and the weight of the counterweight 16, forcing the second pawl 9 to move downward. The downward movement of the second pawl 9 drives the sliding rod 13 to compress the spring 12 simultaneously in the sliding groove 11 via the upper semi-circular connecting rod 15, thus allowing the pawl tooth tip to slide over the inclined surface of the ratchet tooth. This process achieves "automatic unlocking" in the predetermined rotation direction. As the U-shaped rotating frame 3 continues to rotate, the teeth of the second end face ratchet 6 will continuously push the second pawl 9, causing it to repeatedly perform the "press down - slide over - spring back" cycle, accompanied by a clear "click" sound. At the same time, since the lower semi-circular connecting rod 15 is fixedly connected to the inner wall of the clearance hole, the first pawl 8 always remains stable with the fixed first end face ratchet 5. The meshing mechanism, while not involved in the process, ensures that the mechanism can only be adjusted in one direction. When the U-shaped rotating frame 3 rotates to the target position, the operator stops applying rotational force. At this time, the second end face ratchet 6 stops rotating, the downward pressure on the second pawl 9 disappears, and the restoring force of the compression spring 12 immediately pushes the sliding rod 13 upward, causing the second pawl 9 to quickly spring up. Its tooth tip, aided by the gravity of the counterweight 16, falls into the vertical plane of the current tooth groove, achieving reliable meshing again, thereby locking the horizontal angle in a new position. To ensure that even if vibration causes the pawl to slightly float during long-term use, it will not loosen, the operator rotates the threaded column 18. The threaded column 18 screws upward, pushing the upper semi-circular connecting rod 15 and the fixed second pawl 18 through the rotating block 19. The second pawl 9 is pre-displaced upwards. The core purpose of this operation is to reduce the gap between the second pawl 9 and the tooth tip of the second end face ratchet 6. Even if the entire pawl assembly tends to float downwards due to wear or vibration in the future, since the second pawl 9 has been pre-lifted, it can still effectively resist the second end face ratchet 6, forming a reliable mechanical limit and completely preventing it from reversing, thereby achieving reliable locking. When it is necessary to adjust the pitch angle of the sign, the operator simultaneously pulls the handles 27 on both sides of the U-shaped rotating frame 3 outwards. The handles 27 drive the rectangular column 22 to overcome the tension of the tension spring 28 and slide outwards in the rectangular hole 21. The outward movement of the rectangular column 22 causes the second locking ring 26 fixed on it to separate from the first locking ring 25 fixed on the rotating shaft 24.This releases the pitch lock, allowing the operator to swing the safety sign body 4 up and down, allowing it to rotate freely around the rotation axis 24 within the rotation hole 23, steplessly adjusting to the desired pitch angle. Once the desired angle is reached, the operator releases the handle 27. Under the restoring force of the tension spring 28, the rectangular column 22 is pulled inward, causing the second locking ring 26 to re-engage tightly with the first locking ring 25. The serrated structure on their contact surfaces generates strong mechanical interlocking and friction, effectively preventing angle changes due to weight or external forces, thus achieving a stable lock in the pitch direction.
[0029] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A safety sign of an angle-adjustable rotary positioning structure, comprising a base (1), characterized in that: The top surface of the base (1) is fixedly connected to a column (2). A U-shaped rotating frame (3) is provided above the column (2). A safety sign body (4) is installed on the U-shaped rotating frame (3). A horizontal rotating mechanism is provided between the U-shaped rotating frame (3) and the column (2). The horizontal rotating mechanism includes a horizontal rotating component and an adjusting component. The U-shaped rotating frame (3) and the column (2) are connected through the horizontal rotating mechanism. A pitch rotating mechanism is provided on the U-shaped rotating frame (3). The pitch rotating mechanism includes a pitch rotating component and a limiting component. The safety sign body (4) is connected to the U-shaped rotating frame (3) through the pitch rotating mechanism.
2. A safety sign with an angle-adjustable rotating positioning structure according to claim 1, characterized in that: The horizontal rotating assembly includes a first end face ratchet (5) and a second end face ratchet (6). The first end face ratchet (5) is located above the column (2), and the second end face ratchet (6) is located above the first end face ratchet (5). The bottom surface of the first end face ratchet (5) is fixedly connected to the top surface of the column (2), and the top surface of the second end face ratchet (6) is fixedly connected to the bottom surface of the U-shaped rotating frame (3). A rotating column (7) is rotatably mounted on the top surface of the column (2). The rotating column (7) passes through the first end face ratchet (5) and the second end face ratchet (6). The second end face ratchet (6) is fixedly connected to the rotating column (7).
3. A signboard with an angle-adjustable rotating positioning structure according to claim 2, characterized in that: The adjustment assembly includes a first pawl (8) and a second pawl (9). The first pawl (8) and the second pawl (9) are located between the first end face ratchet (5) and the second end face ratchet (6). The first pawl (8) and the second pawl (9) are located on one side of the rotating column (7). The first pawl (8) is engaged with the first end face ratchet (5), and the second pawl (9) is engaged with the second end face ratchet (6). An L-shaped connecting rod (10) is fixedly connected to the periphery of the column (2). The L-shaped connecting rod (10) is located below the first end face ratchet (5). A sliding groove (11) is provided at the top of the L-shaped connecting rod (10). A sliding rod (13) is slidably connected in the sliding groove (11). A compression spring (12) is provided below the sliding rod (13). One end of the compression spring (12) is... The bottom end of the sliding rod (13) is fixedly connected to the other end of the compression spring (12), and the bottom surface of the inner wall of the sliding groove (11) is fixedly connected to the other end of the compression spring (12). The side wall of the sliding rod (13) is provided with a clearance hole (14), and two semi-circular connecting rods (15) are provided in the clearance hole (14). The two semi-circular connecting rods (15) are symmetrically arranged. One end of the semi-circular connecting rod (15) is fixedly connected to a counterweight (16). The other end of the lower semi-circular connecting rod (15) is fixedly connected to the first pawl (8). The lower semi-circular connecting rod (15) is fixedly connected to the inner wall of the clearance hole (14). The other end of the upper semi-circular connecting rod (15) is fixedly connected to the second pawl (9). The upper semi-circular connecting rod (15) is slidably connected to the inner wall of the clearance hole (14).
4. A signboard with an angle-adjustable rotating positioning structure according to claim 3, characterized in that: The top end of the sliding rod (13) is provided with a threaded groove (17), which passes through the top end of the sliding rod (13) and is connected to the clearance hole (14). A threaded column (18) is threadedly connected inside the threaded groove (17), and a rotating block (19) is fixedly connected to the bottom end of the threaded column (18). The cross-section of the rotating block (19) is convex. A rotating groove (20) matching the rotating block (19) is provided on the semi-circular connecting rod (15) located above. The rotating block (19) is located inside the rotating groove (20), and the rotating block (19) is rotatably connected to the inner wall of the rotating groove (20).
5. A signboard with an angle-adjustable rotating positioning structure according to claim 4, characterized in that: The pitch rotation assembly includes two rectangular holes (21), which are located at the upper ends of the U-shaped rotating frame (3). Each rectangular hole (21) is slidably connected to a rectangular column (22), and a rotation hole (23) is provided inside the rectangular column (22). Rotation shafts (24) are fixedly connected to the left and right side walls of the safety sign body (4). The rotation shafts (24) are located in the corresponding rotation holes (23), and the rotation shafts (24) are rotatably connected to the inner wall of the rotation holes (23).
6. A signboard with an angle-adjustable rotating positioning structure according to claim 5, characterized in that: The limiting component includes two first locking rings (25), which are located on the left and right sides of the safety sign body (4). A second locking ring (26) is fixedly connected to the side of the rectangular column (22) near the first locking ring (25). The second locking ring (26) is locked with the corresponding first locking ring (25). The rotating shaft (24) passes through the corresponding first locking ring (25) and the second locking ring (26). The rotating shaft (24) is rotatably connected with the corresponding second locking ring (26). A handle (27) is fixedly connected to the end of the rectangular column (22) away from the second locking ring (26). A tension spring (28) is sleeved on the periphery of the rectangular column (22). One end of the tension spring (28) is fixedly connected to the handle (27), and the other end of the tension spring (28) is fixedly connected to the side wall of the U-shaped rotating frame (3).
7. A signboard with an angle-adjustable rotating positioning structure according to claim 6, characterized in that: Both the first snap ring (25) and the second snap ring (26) are provided with a plurality of serrations arranged in a ring array.
8. A safety sign with an angle adjustable rotating positioning structure according to claim 2, characterized in that: The distance between the first end face ratchet (5) and the second end face ratchet (6) is greater than the distance between the farthest ends of the first pawl (8) and the second pawl (9). The first pawl (8) and the second pawl (9) are floating between the first end face ratchet (5) and the second end face ratchet (6).