Roadway maintenance warning device
By designing a retractable and foldable road maintenance warning device, the problem of existing devices being inconvenient to store and carry has been solved, and the functions of conveniently changing warning content and adjusting height and angle have been realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN SHENGMAO ROAD ENG CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-07-24
AI Technical Summary
Existing highway maintenance warning devices are fixed and bulky, making them inconvenient to store and carry. Warning signs are also difficult to replace, failing to meet different warning needs.
A retractable and foldable road maintenance warning device has been designed, comprising a display box, length-adjustable support legs, and an opening angle adjustment structure, allowing for easy replacement of warning words and folding and retracting of the device to reduce its size.
It enables convenient replacement of warning content according to warning needs. The device can be adjusted in height and angle during use, and can be folded for easy carrying and storage.
Smart Images

Figure CN224549002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of warning sign technology, specifically to road warning devices for highway maintenance. Background Technology
[0002] Warning devices are commonly used tools in highway maintenance operations. Placing them near the construction site of the road to be maintained effectively serves as a warning. Currently, existing warning devices are generally constructed as follows: a warning sign is mounted and fixed to a frame, typically consisting of two A-frames connected by multiple metal rods. The warning sign is fixed to one side of the two A-frames. In use, the warning device is simply placed on the ground; the warning labels or warning messages on the sign effectively alert the user.
[0003] However, while existing warning devices are effective, they are fixed and bulky, making them inconvenient to store and carry when not in use. Furthermore, once fixed in place, warning signs are not easy to replace, failing to meet the need for changing warning signs according to different warning requirements. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a road maintenance warning device. It is a retractable and foldable device that can be easily unfolded for use and can be folded and extended to reduce space occupation when not in use, making it easier to carry and store. In addition, it uses paper with warning words written on it for warning, and it is easy to replace.
[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:
[0006] Highway maintenance road warning devices include:
[0007] The display case has a body and a lid; one side of the body is open and then closed by a matching lid, which is transparent, and a piece of paper with warning words is laid flat inside the body; a pair of display cases are arranged in a mirror image on the left and right, and the tops of the two cases are hinged together with the openings of the two cases facing away from each other.
[0008] Adjustable length support legs: Adjustable length support legs are fixed on the front and rear sides of the box body respectively;
[0009] The opening and closing angle adjustment structure allows the two display cases to be fixed together after being unfolded, and the angle between them can be adjusted by the opening and closing angle adjustment structure.
[0010] As an improvement, the top of the lid is hinged to the top of the box body, and an ear plate is fixed to the flip side of the lid. The ear plate is fixed to the bottom of the box body by a knob screw. The lid can be designed as a transparent glass plate with a metal frame wrapped around its outside.
[0011] As an improvement, the length-adjustable support leg includes a cylindrical tube, a movable inner rod, and a positioning structure; the cylindrical tube is fixed to the side wall of the housing, and the movable inner rod is movably sleeved inside the cylindrical tube and then fixed at different positions inside the cylindrical tube by the positioning structure. This makes the height of this new type adjustable.
[0012] As an improvement, the positioning structure includes a handle screw and positioning screw holes; the handle screw is threaded into a pre-drilled screw hole on the bottom side wall of the tube, and then threaded into the positioning screw holes on the movable inner rod. Multiple positioning screw holes are evenly arranged along the axial direction of the tube. This facilitates adjustment of the length of the adjustable support legs.
[0013] As an improvement, the opening angle adjustment structure includes a diagonal brace, a hand-tightening screw, and positioning screw holes. One end of the diagonal brace is rotatably connected to the side wall of the left-side tube, and the other end is fixed to the right-side tube by a hand-tightening screw. The hand-tightening screw passes through a pre-drilled hole on the diagonal brace and is threaded into the positioning screw holes on the tube. Multiple positioning screw holes are evenly distributed along the axial direction of the tube. This allows for adjustment of the height of the device and the display angle of paper with warning messages.
[0014] The advantages of this utility model compared with the prior art are as follows:
[0015] 1. In use, this new type of device involves placing papers with written warning messages inside a display case to achieve an effective warning effect. The papers with written warning messages can be easily replaced, allowing the warning content to be changed according to different warning needs.
[0016] 2. When in use, the design of the adjustable support legs and the opening angle adjustment structure makes it easy to adjust the overall height and the display angle of the paper; when not in use, the volume of the device can be reduced by folding and extending, making it easier to carry and store. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model.
[0018] Figure 2 This is a schematic diagram of the hinged structure of the two boxes of this utility model.
[0019] Figure 3 This is a partial structural schematic diagram of the present invention.
[0020] Figure 4 This is the utility model Figure 3 A partial structural diagram.
[0021] As shown in the figure: 1. Box body; 2. Box cover; 3. Ear plate; 4. Knob screw; 5. Tube; 6. Movable inner rod; 7. Handle screw; 8. Positioning screw hole; 9. Diagonal brace; 10. Hand screw; 11. Positioning screw hole. Detailed Implementation
[0022] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.
[0023] The present invention will now be described in further detail with reference to the accompanying drawings.
[0024] Highway maintenance road warning devices include:
[0025] The display case consists of a body 1 and a lid 2. One side of the body 1 is open and closed by a matching lid 2. The lid 2 is transparent, and a piece of paper with warning messages is laid flat inside the body 1. The top of the lid 2 is hinged to the top of the body 1. An ear plate 3 is fixed to the flip side of the lid 2, and the ear plate 3 is fixed to the bottom of the body 1 by a knob screw 4. A pair of display cases are arranged mirror images of each other, and when the openings of the two bodies 1 face away from each other, their tops are hinged together.
[0026] The adjustable support leg includes a cylindrical tube 5, a movable inner rod 6, a handle screw 7, and positioning screw holes 8. The cylindrical tube 5 is fixed to the side wall of the housing 1, and the movable inner rod 6 is movably sleeved inside the cylindrical tube 5. The handle screw 7 is threaded into a pre-drilled screw hole on the bottom side wall of the cylindrical tube 5, and then threaded into the positioning screw holes 8 on the movable inner rod 6. Multiple positioning screw holes 8 are evenly arranged along the axial direction of the cylindrical tube 5.
[0027] The opening / closing angle adjustment structure includes a diagonal brace 9, a hand-tightening screw 10, and a positioning screw hole 11. One end of the diagonal brace 9 is rotatably connected to the side wall of the left-side tube 5, and the other end is fixed to the right-side tube 5 by the hand-tightening screw 10. The hand-tightening screw 10 passes through a pre-drilled hole on the diagonal brace 9 and is threadedly connected to the positioning screw hole 11 on the tube 5. Multiple positioning screw holes 11 are evenly arranged along the axial direction of the tube 5. A pair of opening / closing angle adjustment structures are arranged in a mirror image.
[0028] In the specific implementation of this embodiment:
[0029] like Figure 1 As shown, lay the paper with the warning words written on it flat inside the box 1, and close the box lid 2. Then, leave the two display boxes open and adjust the angle between them by tightening the hand screw 10. Finally, adjust the height of the device by tightening the handle screw 7. Then, the "Highway Maintenance Road Warning Device" can be placed on the ground for use.
[0030] It's worth mentioning that fluorescent words can also be written on the paper, which can serve as a warning even at night.
[0031] When not in use, fold the two display cases together so they fit snugly together. At this point, the diagonal brace 9 connects to the tube 5 on the left side. Finally, retract the movable inner rod 6 as much as possible into the tube 5 and secure it. This reduces the space occupied by this new design, making it easier to carry and store.
[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A road maintenance warning device, characterized in that, include: The display case has a box body (1) and a box lid (2); after one side of the box body (1) is open, it is covered by a matching box lid (2). The box lid (2) is a transparent box lid, and a piece of paper with warning words written on it is laid flat inside the box body (1); a pair of display cases are set up in mirror image on the left and right sides, and after the openings of the two boxes (1) are set back to back, the tops of the two are hinged together by hinges. Adjustable length support legs, the front and rear sides of the box (1) are respectively fixed with adjustable length support legs; The opening and closing angle adjustment structure allows the two display cases to be fixed together after being unfolded, and the angle between them can be adjusted by the opening and closing angle adjustment structure.
2. The road maintenance warning device according to claim 1, characterized in that: The top of the lid (2) is hinged to the top of the body (1), and an ear plate (3) is fixed on the flip side of the lid (2). The ear plate (3) is fixed to the bottom of the body (1) by a knob screw (4).
3. The road maintenance warning device according to claim 1, characterized in that: The adjustable length support leg includes a tube (5), a movable inner rod (6), and a positioning structure; the tube (5) is fixed on the side wall of the box (1), and the movable inner rod (6) is movably sleeved inside the tube (5) and then fixed in different positions inside the tube (5) by the positioning structure.
4. The road maintenance warning device according to claim 3, characterized in that: The positioning structure includes a handle screw (7) and a positioning screw hole (8); the handle screw (7) is threaded to the screw hole reserved on the bottom side wall of the tube (5) and then threaded to the positioning screw hole (8) on the movable inner rod (6). Multiple positioning screw holes (8) are evenly arranged along the axial direction of the tube (5).
5. The road maintenance warning device according to claim 4, characterized in that: The opening and closing angle adjustment structure includes a diagonal brace (9), a hand screw (10), and a positioning screw hole (11). One end of the diagonal brace (9) is rotatably connected to the side wall of the left tube (5), and the other end is fixed to the right tube (5) by the hand screw (10). The hand screw (10) passes through the reserved through hole on the diagonal brace (9) and is threadedly connected to the positioning screw hole (11) on the tube (5). Multiple positioning screw holes (11) are evenly arranged along the axial direction of the tube (5).
6. The road maintenance warning device according to claim 5, characterized in that: The opening and closing angle adjustment structure has a pair of mirror images of each other.