A portable construction warning device supporting multi-layer folding

Abstract

The utility model discloses a portable construction warning device of support multilayer folding relates to warning device technical field, the utility model discloses a warning board, support leg subassembly and limiting component are included, wherein, support leg subassembly has working position and folding position, working position is: first locking mechanism and second locking mechanism are all in locking state, and first support leg and second support leg form triangular support structure and support in the bottom of warning board, folding position is: first locking mechanism and second locking mechanism are all in the unlocking state, and first support leg and second support leg are coplanar arrangement, and the first support leg and second support leg of coplanar arrangement are stacked with warning board along the thickness direction of warning board. Warning device can be quickly arranged and stored through the cooperation of multiple hinges and locking mechanisms, shortens the road occupation operation length, reduces the influence to traffic. And when arranging, can stably support on the ground, when storing, can be folded to small volume, is favorable for carrying.

Description

Technical Field

[0001] This utility model relates to the field of warning device technology, and more specifically to a portable construction warning device that supports multi-layer folding. Background Technology

[0002] In traffic, information signs often need to be quickly deployed or replaced according to changes in road conditions (such as changes in construction sections, temporary traffic control, severe weather warnings, etc.). Traditional signs are large in size and often require multiple people to work together to carry and install them. This not only occupies more lane space and operation time, but also easily causes traffic congestion behind and even increases the safety risks to road construction workers.

[0003] Existing patent document CN218729776U discloses a portable signboard, including a foldable signboard body, an adjustable pole, and a base. The foldable signboard body is connected to the adjustable pole on both sides, and the lower part of the adjustable pole is connected to the base. The base is connected to the ground via a detachable clip. This improves upon existing fixed, integral signboards by creating a portable signboard that is reusable, detachable, height-adjustable, and foldable, thus increasing turnover speed and efficiency. Although this device, through folding and pole adjustment, achieves a function similar to two-stage adjustment, it only supports nested extension and retraction between the mounting poles. Even when retracted, it still has a large area and volume. Furthermore, its base relies on fixed ground bolts for installation, making it unsuitable for the flexible and varied movement scenarios during highway construction.

[0004] Therefore, how to provide a portable construction warning device that supports multi-layer folding to solve the problem of inconvenience in carrying, transporting, and placing warning information signs during highway construction is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention aims to provide a portable construction warning device that supports multi-layer folding, so as to solve the problem of inconvenience in carrying, transporting and placing warning information signs during highway construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A portable construction warning device that supports multi-layer folding includes: Warning signs; The support leg assembly includes a first support leg and a second support leg. The upper end of the first support leg is hinged to the warning plate via a first hinge, and the lower end can be supported on the ground. The upper end of the second support leg is hinged to the first support leg via a second hinge, and the lower end can be supported on the ground. A limiting assembly, the limiting assembly including a first locking mechanism for fastening the first support leg and the warning plate, and a second locking mechanism for fastening the first support leg and the second support leg; The support leg assembly has a working position and a folding position. The working position is characterized by the first locking mechanism and the second locking mechanism being in a locked state, with the first support leg and the second support leg forming a triangular support structure and supporting the bottom of the warning plate. The folding position is characterized by the first locking mechanism and the second locking mechanism being in an unlocked state, with the first support leg and the second support leg being arranged coplanarly, and the coplanar first support leg and the second support leg being stacked with the warning plate along the thickness direction of the warning plate.

[0007] The beneficial effects achieved by this invention are as follows: the warning device, through the cooperation of multiple hinges and locking mechanisms, can be quickly deployed and stored, shortening the time spent on road occupancy and reducing the impact on traffic. Furthermore, it can be stably supported on the ground during deployment and can be folded into a smaller volume for easy transport during storage.

[0008] Preferably, the warning plate has multiple flow holes arranged through its surface.

[0009] Preferably, the first locking mechanism is a latch.

[0010] Preferably, the second locking mechanism is a telescopic connector, with its two ends connected to the middle of the first support leg and the second support leg, respectively.

[0011] Preferably, an extension leg assembly is also provided, the extension leg assembly including a sliding sleeve and a locking pin, the upper end of the sliding sleeve is slidably sleeved on the lower outer wall of the second support leg along the length direction of the second support leg, and the bottom end can be supported on the ground; the locking pin is used to limit and lock the sliding sleeve and the second support leg.

[0012] Preferably, the locking pin is a spring pin, and a plurality of adjustment holes are spaced apart along the length of the second support leg sidewall. The mounting end of the spring pin is fixed to the outer sidewall of the sliding sleeve, and the insertion end passes through the sidewall of the sliding sleeve and is inserted into the corresponding adjustment hole.

[0013] Preferably, the warning panel includes a plurality of warning panels arranged in parallel, and adjacent warning panels are hinged together by a third hinge and can be locked by a third locking mechanism; at least one set of support leg assemblies is provided at the bottom of each of the warning panels at both ends, and the first support leg in each set of support leg assemblies is hinged to the corresponding warning panel by the first hinge. When the warning device is in the working position, the first locking mechanism, the second locking mechanism, and the third locking mechanism are all locked, the surfaces of the multiple warning panels are flush, and the first support leg and the second support leg in each set of support leg assemblies form the triangular support structure to support the bottom of the corresponding warning panel; when the warning device is in the folded position, the first locking mechanism, the second locking mechanism, and the third locking mechanism are all unlocked, each set of support leg assemblies is stored in a position where the first support leg and the second support leg are arranged on the same plane, and the multiple warning panels and the multiple stored support leg assemblies are stacked along the thickness direction of the warning panel.

[0014] Preferably, the third locking mechanism is a latch.

[0015] Preferably, a reinforcing tie rod is also provided. The first supporting leg of the two sets of supporting leg assemblies is provided with a first limiting hole and a second limiting hole on the side that is close to each other. The two ends of the reinforcing tie rod can be positioned and inserted into the first limiting hole and the second limiting hole.

[0016] Preferably, both the first limiting hole and the second limiting hole are elongated holes arranged along the length direction of the corresponding first support leg. One end of the reinforcing rod is fixed with a vertically arranged first clamping member, and the other end is fixed with a second clamping member arranged perpendicular to its body. The two first support legs are clamped together between the first clamping member and the second clamping member.

[0017] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a portable construction warning device that supports multi-layer folding, which has the following beneficial effects: 1. When stored, it can be folded into a smaller volume, which can be easily carried to the work site by a single person without the need for additional auxiliary equipment, greatly shortening the time of road occupation and reducing the impact on highway traffic efficiency; at the same time, the compact form after storage is also convenient for vehicle transportation, reducing the cost of a single transportation, especially suitable for the dispatch of batch signs in emergency situations, which can quickly respond to the information transmission needs of sudden road conditions and improve the flexibility and emergency response capabilities of highway traffic management.

[0018] 2. When in use, the locking buckles and folding connectors allow for quick deployment and deployment without the need for additional auxiliary tools, reducing the operator's exposure time in traffic and improving operational safety.

[0019] 3. When in use, the support legs unfold to form a triangular support structure, and the sign has drainage holes, which can keep the sign stable in strong winds on highways, prevent it from tipping over or shifting due to wind, and ensure the reliability of information display. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a structural diagram of a portable construction warning device that supports multi-layer folding, provided by this utility model, in its working state.

[0022] Figure 2 This is a structural diagram of a portable construction warning device that supports multi-layer folding, provided by this utility model, at one angle when it is being stored.

[0023] Figure 3 This is a structural diagram of a portable construction warning device that supports multi-layer folding, provided by this utility model, from another angle when it is being stored away.

[0024] Figure 4 This utility model provides a structural diagram of a portable construction warning device that supports multi-layer folding and is stored in a convenient location.

[0025] Figure 5 This is a schematic diagram of the structure of a portable construction warning device that supports multi-layer folding when fully retracted, as provided by this utility model.

[0026] Figure 6 This is a structural diagram illustrating another storage method for a portable construction warning device that supports multi-layer folding, as provided by this utility model.

[0027] Figure 7 This is a structural diagram of a portable construction warning device that supports multi-layer folding, provided by this utility model, when fully folded.

[0028] Figure 8 for Figure 1 Enlarged structural diagram of section A.

[0029] Figure 9 for Figure 1 Enlarged structural diagram of section B.

[0030] Figure 10 This is a schematic diagram of the installation structure of the spring pin provided by this utility model.

[0031] Figure 11 A schematic diagram of the installation structure of the reinforcing tie rod provided by this utility model.

[0032] In the diagram: 1. Warning plate, 101. Warning panel, 1011. Flow hole, 2. Support leg assembly, 201. First support leg, 2011. First limiting hole, 20112. Second limiting hole, 202. Second support leg, 2021. Adjustment hole, 3. First hinge, 4. Second hinge, 5. First locking mechanism, 6. Second locking mechanism, 7. Extension leg assembly, 701. Sliding sleeve, 702. Locking pin, 7021. Fixing sleeve, 7022. Sealing plate, 7023. Pull rod, 7024. Spring seat, 7025. Spring, 7026. Pull ring, 8. Third hinge, 9. Third locking mechanism, 10. Reinforcing pull rod. Detailed Implementation

[0033] 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.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Example 1: Please see Figures 1-11 This utility model discloses a portable construction warning device that supports multi-layer folding, comprising: Warning panel 1, the warning panel 1 includes a warning panel 101; Support leg assembly 2 includes a first support leg 201 and a second support leg 202. The upper end of the first support leg 201 is hinged to the warning panel 101 via a first hinge 3, and the lower end can be supported on the ground. The upper end of the second support leg 202 is hinged to the first support leg 201 via a second hinge 4, and the lower end can be supported on the ground. The limiting assembly includes a first locking mechanism 5 for fastening the first support leg 201 and the warning panel 101, and a second locking mechanism 6 for fastening the first support leg 201 and the second support leg 202. The support leg assembly 2 has a working position and a folding position. In the working position, the first locking mechanism 5 and the second locking mechanism 6 are both locked, and the first support leg 201 and the second support leg 202 form a triangular support structure and are supported at the bottom of the warning panel 101. In the folding position, the first locking mechanism 5 and the second locking mechanism 6 are both unlocked, and the first support leg 201 and the second support leg 202 are arranged in the same plane. The coplanar first support leg 201 and the second support leg 202 are stacked with the warning panel 101 along the thickness direction of the warning panel 101.

[0036] Specifically, the warning panel 101 may include a mounting frame and a warning main board installed inside the mounting frame. The warning main board is provided with warning strips, warning words or warning patterns that correspond to the warning situation.

[0037] Specifically, the warning motherboard may have multiple flow holes 1011 arranged through its surface to reduce wind resistance and enhance wind resistance.

[0038] Specifically, the first locking mechanism 5 includes two latches located at opposite ends of the warning panel 101. These latches do not affect folding and storage, but also strengthen the connection between the warning panel 101 and the first support leg 201 during operation. The latches can be spring-loaded hooks to securely fasten the warning panel 101 to the first support leg 201, ensuring its stability during operation. Spring-loaded hooks offer strong locking force and are easy to operate. Spring-loaded hooks are existing technology and will not be described further here. In some other embodiments, other types of latches from the prior art can also be used.

[0039] Specifically, the second locking mechanism 6 can be a telescopic connector, with its two ends connected to the middle of the first support leg 201 and the second support leg 202, respectively. In actual use, the telescopic connector can be a pull rope, a zipper, or a foldable pull rod.

[0040] More specifically, the foldable rod includes multiple limiting links 601, which are connected sequentially along their length and adjacent limiting links 601 are hinged together by a fourth hinge 12. The limiting links 601 at both ends are respectively hinged to the first support leg 201 and the second support leg 202 via a fifth hinge 13. In its working state, the foldable rod can be unfolded to limit the angle between the first support leg 201 and the second support leg 202, which form a triangular support structure, preventing the angle from being too large. When the angle is at its maximum, the multiple limiting links are arranged collinearly. In its folded state, the foldable rod can be folded. When folded, the multiple limiting links 601 can be stacked along the direction from the first support leg 201 to the second support leg 202 to be completely placed within the gap between the first support leg 201 and the second support leg 202, thereby allowing the first support leg 201 and the second support leg 202 to be stored in the same plane. In actual use, because the middle part is loose when the zipper or pull cord is in the storage state, it is difficult to completely store it into the gap between the first support leg 201 and the second support leg 202, which may affect the storage efficiency. Therefore, a foldable pull rod is preferred.

[0041] Specifically, an extension leg assembly 7 is also provided. The extension leg assembly includes a sliding sleeve 701 and a locking pin 702. The upper end of the sliding sleeve 701 is slidably fitted onto the lower outer wall of the second support leg 202 along the length direction of the second support leg 202, and the bottom end can be supported on the ground. The locking pin 702 is used to limit and lock the sliding sleeve and the second support leg 202. By sliding the extension leg assembly 7, the height of the second support leg 202 can be adjusted, thereby adjusting the angle of the warning panel 101 for easy observation of the warning content. When the extension leg assembly 7 is stored, the bottom end is flush with or higher than the bottom surface of the second support leg 202 to minimize its space occupation.

[0042] More specifically, the locking pin 702 is a spring pin, and multiple adjustment holes 2021 are spaced apart along the length of the side wall of the second support leg 202. The mounting end of the spring pin is fixed to the outer side wall of the sliding sleeve 701, and the elastic insertion end slides through the side wall of the sliding sleeve and is limited to the corresponding adjustment hole 2021.

[0043] The spring pin includes a fixed sleeve 7021, a sealing plate 7022, a pull rod 7023, a spring seat 7024, and a spring 7025. The fixed sleeve 7021 is axially arranged perpendicular to the sliding sleeve and fixed to the outer wall of the sliding sleeve 701. The sealing plate 7022 is fixed to the inner wall of the fixed sleeve 7021 at the end away from the sliding sleeve 701. The pull rod 7023 slides coaxially in the inner cavity of the fixed sleeve 7021, and one end of it passes through the side wall of the extension leg assembly 7 to be positioned and inserted into the corresponding adjustment hole, and the other end passes through the sealing plate 7022 to extend to the outside of the fixed sleeve 7021 and is fitted with a pull ring 7026. The spring seat 7024 is installed on the pull rod 7023 in the inner cavity of the corresponding fixed sleeve 7021. The spring 7025 is sleeved on the pull rod 7023 between the spring seat 7024 and the sealing plate 7022. Pulling the pull ring 7026 compresses the spring 7025, disengaging the pull rod 7023 from the adjustment hole. At this point, the position of the sliding sleeve 701 can be adjusted. After adjusting the position, releasing the pull ring 7026 causes the pull rod 7023 to automatically return to its original position under the elastic force of the spring 7025, inserting it into the corresponding adjustment hole, thus completing the adjustment and fixation of the extension leg assembly 7. The use of a spring-loaded self-locking pin allows for adjustment without the need for auxiliary tools, facilitating one-handed operation and saving labor.

[0044] Example 2: This embodiment is an improvement on Example 1. Both the first support leg 201 and the second support leg 202 are frame structures. The upper part of the second support leg 202 is hinged to the inner frame side wall of the first support leg 201 through the second hinge 4.

[0045] Specifically, both the first support leg 201 and the second support leg 202 can adopt a semi-enclosed U-shaped frame structure or a fully enclosed square frame structure. For example... Figures 1-7 The first support leg 201 adopts a fully enclosed square frame structure, and its outer diameter is approximately the same as that of the warning panel 101. The second support leg 202 adopts a semi-enclosed U-shaped frame structure, which is embedded in the frame of the first support leg, with its U-shaped opening facing the warning panel 101. The two side walls of its opening are respectively hinged to the corresponding inner side walls of the first support leg through the second hinge 4, thereby giving it sufficient support strength and saving materials, while also facilitating use and storage.

[0046] Specifically, a limiting plate 11 is installed at the lower part of the first support leg 201 to limit the rotation angle of the second support leg when it is retracted, so that it stops rotating when it is inside the inner cavity of the first support leg frame. By adjusting the installation position of the limiting plate, the rotation angle of the second support leg can be limited while simultaneously connecting multiple sides of the first support leg, thereby strengthening the overall connection strength of the first support leg and enhancing its supporting force.

[0047] Two extension leg assemblies 7 correspond to the two sides of the second support leg. The upper end of each extension leg assembly 7 is slidably sleeved on the lower end of the corresponding side and locked by a locking pin 702, and the bottom end can be supported on the ground. Each extension leg assembly 7 has a clearance slot through its bottom wall on the bottom edge corresponding to the second support leg.

[0048] The locking pin 702 is disposed in the inner cavity of the frame of the second support leg 202 so that it is coplanar with the frames of the first support leg 201 and the second support leg 202 in the stored state, thereby reducing the volume when stored.

[0049] Example 3: See Figures 1-11 This embodiment is suitable for situations where there is a lot of warning content and a large warning panel is required for display. This embodiment is an improvement on embodiment 1 or embodiment 2, the difference being that the warning panel 1 in this embodiment includes two warning panels 101 arranged side by side, and the two warning panels 101 are hinged together by a third hinge 8 and can be locked by a third locking mechanism 9; each warning panel 101 has a set of support leg assemblies 2 at its bottom, and the first support leg 201 in each set of support leg assemblies 2 is hinged to the corresponding warning panel 101 by a first hinge 3; When the warning device is in the working position, the first locking mechanism, the second locking mechanism, and the third locking mechanism are all locked, and the multiple warning panels 101 are flush to display the complete warning content. In each set of support leg assemblies 2, the first support leg 201 and the second support leg 202 form a triangular support structure and are supported on the bottom of the corresponding warning panel 101. When the warning device is in the folded position, the first locking mechanism, the second locking mechanism, and the third locking mechanism are all unlocked, and each set of support leg assemblies 2 is stored in the first support leg 201 and the second support leg 202 arranged on the same plane. The multiple warning panels 101 and the multiple stored support leg assemblies 2 are stacked along their thickness direction.

[0050] By selecting the appropriate type of hinge or adjusting the hinge installation position, the positions of the two sets of support leg assemblies 2 and the two warning panels 101 can be adjusted when stacked. For example... Figures 1-5 As shown, the two ends of the first hinge 3 are respectively connected to the front side of the warning panel 101 and the side with the warning label on the first support leg 201, and the two ends of the third hinge 8 are respectively connected to the back side of the two first support legs 201 away from the warning label. Thus, when folded, the two sets of support leg assemblies 2 can be clamped between the two warning panels 101. Figures 6-7As shown, the two ends of the first hinge 3 are respectively connected to the front of the warning panel 101 and the first support leg 201, and the two ends of the third hinge 8 are respectively connected to the back of the two warning panels 101. Thus, when folded, the two warning panels 101 can be clamped between the two sets of support leg assemblies 2. In addition, different stacking positions of the two sets of support leg assemblies 2 and the two warning panels 101 can be achieved by using a suitable type of hinge or by adjusting the installation position of the hinge.

[0051] The third locking mechanism 9 can be a latch. The latch can be a spring latch or other types of latches in the prior art to lock the warning panel 101 to the first support leg 201 and ensure its stability in the working state.

[0052] Example 4: This embodiment is an improvement on embodiment 3. In this embodiment, three or more warning panels 101 are provided, and two sets of support leg assemblies 2 are provided, with the two sets of support leg assemblies 2 respectively connected to the warning panels 101 at both ends. In the working state, the surfaces of the multiple warning panels 101 are flush to display the complete warning content, and the two sets of support leg assemblies 2 are respectively supported on the bottom of the warning panels 101 at both ends. In the storage state, the multiple warning panels 101 are stacked into a multi-layer board structure through the third hinge 8, and the two sets of support leg assemblies 2 are respectively flipped in a direction away from each other through the corresponding first hinge 3 and respectively attached to the two exposed surfaces of the multi-layer board structure, thereby completing the folding and storage of the entire warning device.

[0053] Example 5: This embodiment is an improvement on embodiment 3 or 4. In this embodiment, a reinforcing tie rod 10 is also provided. The first supporting leg 201 of the two sets of supporting leg assemblies 2 are respectively provided with a first limiting hole 2011 and a second limiting hole 2012 on the side that are close to each other. The two ends of the reinforcing tie rod 10 can be positioned and inserted into the first limiting hole 2011 and the second limiting hole 2012.

[0054] More specifically, both the first limiting hole 2011 and the second limiting hole 2012 are elongated holes arranged along the length of the first support leg 201. One end of the reinforcing rod 10 is fixed with a first clamping member, and the other end is fixed with a second clamping member. The first and second clamping members are arranged opposite each other to form a clamping cavity, in which the two first support legs 201 can be clamped together. In use, one end of the reinforcing rod is passed through the first limiting hole 2011 and the second limiting hole 2012 in sequence, and then moved downwards, so that the first and second clamping members abut against the inner frame walls of the two first support legs respectively, clamping the two first support legs tightly. This enables the connection between the two sets of support leg assemblies in the working state, enhancing the overall stability of the device.

[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable construction warning device that supports multi-layer folding, characterized in that, include: Warning board (1); The support leg assembly (2) includes a first support leg (201) and a second support leg (202). The upper end of the first support leg (201) is hinged to the warning plate (1) via a first hinge (3), and the lower end can be supported on the ground. The upper end of the second support leg (202) is hinged to the first support leg (201) via a second hinge (4), and the lower end can be supported on the ground. The limiting assembly includes a first locking mechanism (5) for fastening the first support leg (201) and the warning plate (1), and a second locking mechanism (6) for fastening the first support leg (201) and the second support leg (202). The support leg assembly (2) has a working position and a folding position. The working position is as follows: the first locking mechanism (5) and the second locking mechanism (6) are both in a locked state, the first support leg (201) and the second support leg (202) form a triangular support structure and are supported at the bottom of the warning plate (1); the folding position is as follows: the first locking mechanism (5) and the second locking mechanism (6) are both in an unlocked state, the first support leg (201) and the second support leg (202) are arranged in the same plane, and the first support leg (201) and the second support leg (202) arranged in the same plane are stacked with the warning plate (1) along the thickness direction of the warning plate (1).

2. A portable construction warning device supporting multi-layer folding as described in claim 1, characterized in that, The warning plate (1) is provided with a plurality of flow holes (1011) that penetrate its surface.

3. A portable construction warning device supporting multi-layer folding as described in claim 1, characterized in that, The first locking mechanism (5) is a latch.

4. A portable construction warning device supporting multi-layer folding as described in claim 1, characterized in that, The second locking mechanism (6) is a telescopic connector, and the two ends of the telescopic connector are respectively connected to the middle of the first support leg (201) and the second support leg (202).

5. A portable construction warning device supporting multi-layer folding as described in claim 1, characterized in that, An extension leg assembly (7) is also provided, which includes a sliding sleeve (701) and a locking pin (702). The upper end of the sliding sleeve (701) is slidably sleeved on the lower outer wall of the second support leg (202) along the length direction of the second support leg (202), and the bottom end can be supported on the ground. The locking pin (702) is used to limit and lock the sliding sleeve and the second support leg (202).

6. A portable construction warning device supporting multi-layer folding according to claim 5, characterized in that, The locking pin (702) is a spring pin. The second support leg (202) has a plurality of adjustment holes (2021) spaced apart along its length on its side wall. The mounting end of the spring pin is fixed to the outer side wall of the sliding sleeve (701), and the insertion end passes through the side wall of the sliding sleeve and is inserted into the corresponding adjustment hole (2021).

7. A portable construction warning device supporting multi-layer folding according to any one of claims 1-6, characterized in that, The warning panel (1) includes a plurality of warning panels (101) arranged in parallel, and adjacent warning panels (101) are hinged together by a third hinge (8) and locked by a third locking mechanism (9); at least one set of the support leg assembly (2) is provided at the bottom of the warning panels (101) at both ends, and the first support leg (201) in each set of the support leg assembly (2) is hinged to the corresponding warning panel (101) by the first hinge (3); When the warning device is in the working position, the first locking mechanism, the second locking mechanism and the third locking mechanism are all locked, the multiple warning panels (101) are flush, and the first support leg (201) and the second support leg (202) in each set of support leg assemblies (2) form the triangular support structure to support the bottom of the corresponding warning panel (101); when the warning device is in the folded position, the first locking mechanism, the second locking mechanism and the third locking mechanism are all unlocked, each set of support leg assemblies (2) is stored in the first support leg (201) and the second support leg (202) are arranged on the same plane, and the multiple warning panels (101) and the multiple stored support leg assemblies (2) are stacked along the thickness direction of the warning panel (101).

8. A portable construction warning device supporting multi-layer folding according to claim 7, characterized in that, The third locking mechanism (9) is a latch.

9. A portable construction warning device supporting multi-layer folding according to claim 7, characterized in that, A reinforcing rod (10) is also provided. The first support leg (201) of the two sets of support leg assemblies (2) are respectively provided with a first limiting hole (2011) and a second limiting hole (2012) on the side that is close to each other. The two ends of the reinforcing rod (10) can be positioned and inserted into the first limiting hole (2011) and the second limiting hole (2012).

10. A portable construction warning device supporting multi-layer folding according to claim 9, characterized in that, The first limiting hole (2011) and the second limiting hole (2012) are both elongated holes arranged along the length direction of the corresponding first support leg (201). One end of the reinforcing rod (10) is fixed with a vertically arranged first clamping member, and the other end is fixed with a second clamping member arranged vertically to its body. The two first support legs (201) are clamped together between the first clamping member and the second clamping member.

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