Construction warning device

Abstract

The utility model provides a construction warning device, belongs to the technical field of construction safety, and aims to improve the convenience and efficiency of field operation. The supporting and fixing mechanism is used for supporting and fixing the warning body and comprises a fixing assembly, and the fixing assembly is fixed to the ground; the fixing assembly comprises a fixing bottom plate and a fixing base plate, an extrusion plate; an elastic support body; one end of the pressing plate is fixed on the fixed bottom plate, and the other end of the pressing plate is fixed on the extrusion plate; one end of the limiting rod penetrates through the extrusion plate and abuts against the fixed bottom plate; and a fixing member. Wherein the fixing part sequentially penetrates through the extrusion plate, the fixing bottom plate and the ground so that the fixing assembly can be fixed to the ground, and the extrusion plate is arranged in a sliding range formed by the limiting rod and the elastic supporting body in a sliding mode. The warning device has the technical effects of strong warning effect and simplicity in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of construction safety, in particular to a construction warning device. Background Art

[0002] Construction safety warning devices are effective facilities to ensure the safety of construction site work areas. They are designed to effectively warn pedestrians and vehicles, prevent accidental injuries, and protect the safety of construction site personnel and the public through a variety of media, such as warning signs, isolation fences, reflective cones, warning lights, and sound alarm equipment.

[0003] Although the existing fixing method of construction safety warning devices can ensure the stability of the device, it has some inconveniences in actual operation. Once the device is placed in place and anchored with a fixing pin, it needs to rely on additional tools to assist in removal, which not only increases the complexity of on-site operations, but also slows down the efficiency of equipment adjustment or removal, bringing operational inconvenience and time cost to users. Utility Model Content

[0004] The purpose of the utility model is to overcome at least one of the above-mentioned shortcomings of the prior art and provide a construction warning device with strong warning effect and simple operation.

[0005] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present invention.

[0006] According to one aspect of the utility model, a construction warning device is provided, comprising:

[0007] Warning subject;

[0008] A supporting and fixing mechanism, used for supporting and fixing the warning body, and comprising a fixing component, wherein the fixing component is fixed on the ground;

[0009] Wherein, the fixing component comprises:

[0010] Fixed bottom plate;

[0011] Extruded board;

[0012] An elastic support body; one end of which is fixed to the fixed bottom plate, and the other end of which is fixed to the extrusion plate;

[0013] A limiting rod, one end of which passes through the extrusion plate and abuts against the fixed bottom plate; and

[0014] Fixings;

[0015] The fixing member sequentially passes through the extrusion plate, the fixed bottom plate and the ground to fix the fixing assembly on the ground, and the extrusion plate is slidably arranged within the sliding range formed by the limiting rod and the elastic support body.

[0016] In some exemplary embodiments of the present utility model, based on the above solution, the surface of the limiting rod is provided with threads;

[0017] The fixing assembly further comprises a limiting ring, which is sleeved on the limiting rod and movably arranged between the extrusion plate and the top of the limiting rod;

[0018] Wherein, the limiting ring is threadably matched with the limiting rod and has a working position and an idle position. In the working position, the limiting ring abuts against the extrusion plate; in the idle position, the limiting ring is away from the extrusion plate.

[0019] In some exemplary embodiments of the present utility model, based on the above solution, the limit rod is arranged at the middle position of the extrusion plate;

[0020] The elastic support body is arranged between the limiting rod and the fixing member.

[0021] There are two elastic supporting bodies and two fixing members, and the two elastic supporting bodies and the two fixing members are symmetrically arranged about the limiting rod axis.

[0022] In some exemplary embodiments of the present utility model, based on the above solution, the warning subject includes:

[0023] Warning signs,

[0024] A supporting unit is located between the warning sign and the fixed bottom plate to support the warning sign.

[0025] In some exemplary embodiments of the present utility model, based on the above-mentioned solution, the warning sign includes a display surface and a back surface arranged in a back-to-back manner, and the back surface is provided with a fixing frame;

[0026] The support and fixing mechanism also includes an auxiliary support component;

[0027] Wherein, the auxiliary support component is connected to the fixing frame and has a support position, and at the support position, the plane where the auxiliary support component is located intersects with the plane where the warning sign is located.

[0028] In some example embodiments of the present invention, based on the above solution, the auxiliary support assembly further has a first storage position, and in the first storage position, the plane where the auxiliary support assembly is located is parallel to the plane where the warning sign is located.

[0029] In some exemplary embodiments of the present utility model, based on the above solution, the auxiliary support assembly includes:

[0030] A supporting base plate is in contact with the ground;

[0031] An auxiliary rod, one end of which is fixed to the supporting bottom plate, and the other end of which is provided with a first through hole;

[0032] Wherein, the auxiliary rod and the fixing frame are connected via a connecting mechanism, and the connecting mechanism comprises:

[0033] The limiting frame comprises a frame body, which is fixedly connected to the fixing frame and has two frame plates arranged opposite to each other, and the two frame plates are respectively provided with a second through hole and a third through hole;

[0034] The rotating column passes through the second through hole, the first through hole and the third through hole to connect the limiting frame and the auxiliary rod.

[0035] In some exemplary embodiments of the present invention, based on the above solution, a lifting assembly is provided on the fixing frame, and the lifting assembly includes:

[0036] A sleeve, fixed on the fixing frame;

[0037] draw rod;

[0038] An extension rod has one end extending into the sleeve and can slide along the inner space of the sleeve, and the other end is connected to the draw rod.

[0039] In some exemplary embodiments of the present invention, based on the aforementioned solution, the sleeve includes a first sub-sleeve and a second sub-sleeve;

[0040] The extension rod comprises a first sub-extension rod and a second sub-extension rod;

[0041] One end of one of the first sub-extension rod and the second sub-extension rod extends into the first sub-sleeve, and one end of the other extends into the second sub-sleeve, and the other ends of both are respectively connected to the two ends of the withdrawal rod.

[0042] In some exemplary embodiments of the present utility model, based on the above solution, the warning body further includes:

[0043] A reflective strip placement frame is arranged on the outer wall of the warning sign;

[0044] There are multiple reflective strip placement frames, and the multiple reflective strip placement frames are arranged at equal intervals.

[0045] It can be seen from the above technical solution that the utility model has at least one of the following advantages and positive effects:

[0046] Through the above technical solution, that is, through the construction warning device provided by the utility model, since the extrusion plate is slidably arranged within the sliding range formed by the limit rod and the elastic support body, on the one hand, it is convenient to adjust the height of the warning body as needed on site to ensure the best warning effect, and can be adapted to different terrains and line of sight requirements; on the other hand, the operator only needs to step on the extrusion plate with his feet, compress the elastic support body and then remove the fixings to complete the removal of the construction warning device. This design can significantly improve the convenience and efficiency of on-site operations and reduce manpower dependence, especially in emergency situations or frequent changes in construction sites. It can significantly speed up the adjustment or migration speed of equipment, thereby effectively improving the overall fluency and safety of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0048] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0049] Figure 2 This is a schematic diagram of the anatomical structure of the utility model;

[0050] Figure 3 This is a rear view structural diagram of the utility model;

[0051] Figure 4 This is a schematic diagram of the auxiliary rod disassembly structure of the utility model;

[0052] Figure 5 It is a schematic diagram of the structure of the utility model when viewed from above.

[0053] Description of Reference Numerals

[0054] 1. Fixing mechanism; 101. Fixing base plate; 102. Fixing piece; 103. Pedal; 104. Spring support body; 105. Limiting rod; 106. Limiting ring; 107. Limiting plate; 108. Extrusion plate; 2. Main mechanism; 201. Warning sign; 202. Support rod; 203. Reflective strip placement frame; 204. Fixing frame; 205. Sleeve; 206. Extension rod; 207. Pulling rod; 208. Rubber column; 3. Auxiliary support assembly; 301. Support base plate; 302. Auxiliary rod; 303. Rotating column; 304. Limiting nut; 305. Limiting frame. DETAILED DESCRIPTION

[0055] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0056] The features, structures or characteristics described above may be combined in one or more embodiments in any suitable manner, and if possible, the features discussed in each embodiment are interchangeable. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present utility model. However, those skilled in the art will appreciate that the technical solution of the present utility model can be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the present utility model.

[0057] Although relative terms such as "upper" and "lower" are used in the present invention to describe the relative relationship of one component of the illustration to another component, these terms are used in the present invention only for convenience, such as the direction of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". Other relative terms, such as "high", "low", "top", "bottom", "front", "back", "left", "right", etc., also have similar meanings. When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0058] In the present invention, the terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express an open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc.

[0059] According to one aspect of the utility model, a construction warning device is provided, referring to Figures 1 to 5 As shown, including:

[0060] A warning body; a supporting and fixing mechanism 1, used for supporting and fixing the warning body, and comprising a fixing component, wherein the fixing component is fixed on the ground; wherein the fixing component comprises: a fixed base plate 101, an extrusion plate 108, an elastic support body, a limiting rod 105 and a fixing member 102; one end of the elastic support body is fixed on the fixed base plate 101, and the other end is fixed on the extrusion plate 108; one end of the limiting rod 105 passes through the extrusion plate 108 and abuts against the fixed base plate 101; the fixing member 102 passes through the extrusion plate 108, the fixed base plate 101 and the ground in sequence to fix the fixing component on the ground, and the extrusion plate 108 is slidably arranged within the sliding range formed by the limiting rod 105 and the elastic support body.

[0061] Through the above technical solution, that is, through the construction warning device provided by the utility model, since the extrusion plate 108 is slidably arranged within the sliding range formed by the limit rod 105 and the elastic support body, on the one hand, it is convenient to adjust the height of the warning body as needed on site to ensure the best warning effect and can be adapted to different terrains and line of sight requirements; on the other hand, the operator only needs to step on the extrusion plate 108 with his foot, compress the elastic support body and then take out the fixing part 102 to complete the removal of the construction warning device. This design can significantly improve the convenience and efficiency of on-site operations and reduce dependence on manpower. Especially in emergency situations or frequent changes in construction sites, it can significantly speed up the adjustment or migration speed of equipment, thereby effectively improving the overall fluency and safety of construction.

[0062] In addition, considering the reliability of the installation of the construction warning device, it is ensured that the elastic support body is fully compressed during installation to improve the tightness. As an implementation method, reference Figure 1 As shown, the surface of the limit rod 105 can be designed to be provided with threads; the fixing assembly also includes a limit ring 106, which is sleeved on the limit rod 105 and movably arranged between the extrusion plate 108 and the top of the limit rod 105; wherein the limit ring 106 is threadedly matched with the limit rod 105, and has a working position and an idle position, in which the limit ring 106 is against the extrusion plate 108; in the idle position, the limit ring 106 is away from the extrusion plate 108.

[0063] In this way, the threaded design on the surface of the limit rod 105 cooperates with the movable limit ring 106 to form a sophisticated adjustment system. By rotating the limit ring 106, it can be precisely controlled to move up and down along the limit rod 105, thereby adjusting the position of the extrusion plate 108. This adjustment function enables construction personnel to easily adjust the height of the warning device according to actual needs, significantly improving the convenience and efficiency of on-site operations. When the limit ring 106 is in the working position, the limit ring 106 supports the extrusion plate 108 and limits its downward movement, ensuring the stability and safety of the device during installation or use; when the limit ring 106 is in the idle position, it is away from the extrusion plate 108, providing space for the adjustment of the extrusion plate 108, which is convenient for adjustment during installation or disassembly. In addition, through the restriction of the limit ring 106, the extrusion plate 108 is prevented from being over-pressed or accidentally slipping, protecting the device and the ground from force damage, while ensuring the safety of construction personnel's operation. The threaded design can ensure the wear resistance and weather resistance of the limit rod 105 and the limit ring 106 during long-term use, effectively reduce the maintenance frequency, and thus extend the overall service life of the construction warning device.

[0064] Of course, a limiting plate 107 can also be set on the other end of the limiting rod 105 (the end away from the fixed base plate 101) to limit the extrusion plate 108 from sliding between its two ends, thereby effectively preventing the extrusion plate 108 from flying out of the limiting rod 105 and ensuring safety and reliability of use.

[0065] In order to optimize the load distribution and enhance the stability and balance of the construction warning device, in some example embodiments of the present utility model, based on the aforementioned scheme, the limit rod 105 is arranged at the middle position of the extrusion plate 108; the elastic support body is arranged between the limit rod 105 and the fixing member 102, and there are two of the elastic support body and the fixing member 102, and the two elastic support bodies and the two fixing members 102 are symmetrically arranged about the limit rod 105 axis.

[0066] By setting the limiting rod 105 in the middle of the extrusion plate 108, it can be ensured that the limiting ring 106 is evenly distributed when limiting the extrusion plate 108, avoiding the instability problem caused by unilateral weight. In addition, the two elastic support bodies and the two fixing members 102 are symmetrically distributed around the limiting rod 105 axis, so that when the operator steps on one side, the rebound force of the elastic support body can effectively absorb and disperse the unilateral impact force, so that the extrusion plate 108 always maintains a nearly balanced state, prevents loosening, ensures the balance of the extrusion plate 108 when stepping, and effectively enhances the stability of the structure.

[0067] It should be noted that the elastic support body can be any device that meets the requirements of support, shock absorption and compressibility at the same time, such as a spring, a rubber block or a hydraulic shock absorber, etc. For the dual considerations of structural simplicity and cost control, the utility model preferably adopts a spring as the implementation form of the elastic support body, which not only ensures the economic efficiency of the design, but also ensures the stability and durability of the product, further optimizes the overall cost performance and practicality, and is suitable for a wide range of construction environments and budget requirements.

[0068] The fixing member 102 can be a pin, a bolt, etc., so as to achieve the fixing function. In some embodiments, a pedal 103 can also be provided on the fixing member 102 to facilitate the operator to step on it.

[0069] In addition, in some example embodiments of the present invention, based on the aforementioned solution, the warning body includes: a warning sign 201 and a supporting unit, wherein the supporting unit is located between the warning sign 201 and the fixed base plate 101 to support the warning sign 201 .

[0070] The present invention does not limit the specific structure of the support unit. For example, in some embodiments, the support unit can be a support plate, a support column, a support box, or other components with support functions. Considering the simplicity of structure and portability, in the embodiments provided by the present invention, the support unit is designed to be rod-shaped or column-shaped.

[0071] Since the support unit is arranged between the warning sign 201 and the fixed base plate 101, the display angle of the warning sign 201 cannot be adjusted. Therefore, some structures that can adjust the angle of the warning sign 201 can also be designed. For example, in some embodiments, based on the aforementioned scheme, the warning sign 201 includes a display surface and a back surface arranged back to back, and the back surface is provided with a fixing frame 204; the supporting and fixing mechanism 1 also includes an auxiliary support assembly 3; wherein the auxiliary support assembly 3 is connected to the fixing frame 204 and has a supporting position, and at the supporting position, the plane where the auxiliary support assembly 3 is located intersects with the plane where the warning sign 201 is located.

[0072] In this way, due to the presence of the auxiliary support assembly 3, together with the fixed frame 204, a multi-point or multi-directional support system is formed, ensuring that the warning sign 201 can stand firmly on a flat surface or on a surface with a certain inclination angle, greatly improving the display range and adaptability of the warning sign 201. In addition, this coordinated support system can also effectively resist external interference, such as in strong wind areas, preventing the warning sign 201 from tipping over, thereby ensuring the continuous and effective transmission of warning information.

[0073] Here, the plane where the auxiliary support component 3 is located intersects with the plane where the warning sign 201 is located, which refers to the specific angle between the plane where the auxiliary support component 3 is located and the plane where the warning sign 201 is located. The angle is generally greater than 0 degrees and less than 90 degrees. Furthermore, the warning sign 201 can be designed to move within the angle range, and the auxiliary support component 3 can also be designed to move within the angle range.

[0074] In some embodiments, in order to enable the auxiliary support assembly 3 to move within an angle range, the auxiliary support assembly 3 can also be designed to have a first storage position. In the first storage position, the plane where the auxiliary support assembly 3 is located is parallel to the plane where the warning sign 201 is located.

[0075] That is, when the angle between the plane where the auxiliary support assembly 3 is located and the plane where the warning sign 201 is located is 0, the two planes are parallel, so as to facilitate the placement of the construction warning device when it is idle and improve portability.

[0076] On this basis, the auxiliary support assembly 3 can be designed to include an auxiliary rod 302 or an auxiliary plate to achieve the purpose of auxiliary support. In some exemplary embodiments of the utility model, based on the above scheme, the auxiliary support assembly 3 can also be designed to include: a support base plate 301, which contacts the ground; an auxiliary rod 302, one end of which is fixed to the support base plate 301, and the other end is provided with a first through hole; wherein the auxiliary rod 302 and the fixed frame 204 are connected by a connecting mechanism, and the connecting mechanism includes: a limit frame, including a frame body, which is fixedly connected to the fixed frame 204 and has two frame plates arranged opposite to each other, and the two frame plates are respectively provided with a second through hole and a third through hole; a rotating column 303, which passes through the second through hole, the first through hole and the third through hole to connect the limit frame and the auxiliary rod 302.

[0077] In this way, the support base plate 301 is in direct contact with the ground, providing a solid base for the entire auxiliary support assembly 3, ensuring the stability of the support; and the existence of the auxiliary rod 302 and the connecting mechanism allows the auxiliary rod 302 to rotate and adjust the angle within the limit range of the limit frame to meet the display requirements of different angles, increasing the freedom of the display angle of the warning sign 201 and ensuring the best visibility. Moreover, the auxiliary rod 302 is used instead of a plate for support in order to reflect the simplicity and portability of the structure.

[0078] Here, reference Figure 3As shown, a rubber column 208 with elastic properties can also be set on the auxiliary rod 302 or the support rod 202 to prevent the two from colliding and causing damage to each other when they are close to each other. In addition, a limit nut 304 can be threadedly connected to the surface of the rotating column 303, and the number of the limit nuts 304 is set to be several to limit the left and right positions of the auxiliary rod 302 on the surface of the rotating column 303.

[0079] In order to further enhance the portability of the construction warning device, a lifting component that is easy to carry can also be designed on the construction warning device, which is hidden when not in use and pulled out when in use. In some possible practical methods, the lifting component can be set on the fixed frame 204, and the lifting component can rotate relative to the fixed frame 204; or the lifting component can be hidden in the structure of the fixed frame 204. In some exemplary embodiments of the utility model, based on the aforementioned scheme, a lifting component is provided on the fixed frame 204, and the lifting component includes: a sleeve 205, fixed to the fixed frame 204; a pull rod 207; an extension rod 206, one end of which extends into the sleeve 205 and can slide along the internal space of the sleeve 205, and the other end is connected to the pull rod 207.

[0080] In this way, since the draw rod 207 can slide along the inside of the sleeve 205, it is convenient for the operator to lift the draw rod 207 when carrying the construction warning device, which not only facilitates the rapid deployment and movement of the warning device, but also keeps the overall device neat and beautiful when not in use.

[0081] On this basis, the sleeve 205 can also be designed to include a first sub-sleeve and a second sub-sleeve; the extension rod 206 includes a first sub-extension rod and a second sub-extension rod; wherein one end of the first sub-extension rod and the second sub-extension rod extends into the first sub-sleeve, and one end of the other extends into the second sub-sleeve, and the other ends of both are respectively connected to the two ends of the puller rod 207.

[0082] Therefore, the double sleeve 205 and double extension rod 206 design is more stable mechanically than a single design, and can disperse the stress points, enhance durability and load-bearing capacity, thereby effectively improving the reliability of the construction warning device.

[0083] In addition, in order to further enhance the warning effect, some structures that can enhance the warning effect can be designed on the construction warning device, such as reflective strips or LED warning lights or dynamic warning signs (such as flags or windmills, etc.).

[0084] In some example embodiments of the utility model, based on the aforementioned scheme, the warning body also includes: a reflective strip placement frame 203, which is arranged on the outer wall of the warning sign 201; wherein, there are multiple reflective strip placement frames 203, and the multiple reflective strip placement frames 203 are arranged at equal intervals.

[0085] The presence of the reflective strip placement frame 203 can provide a placement position for the reflective strip, so that the construction warning device can adapt to nighttime or low-light environments, ensuring that the warning information can be clearly expressed even in dim environments; in addition, since the reflective strip may age or be damaged after long-term use, the presence of the reflective strip placement frame 203 can facilitate the replacement of the reflective strip without replacing components, thereby simplifying the maintenance process and saving costs and time. And because multiple reflective strip placement frames 203 are arranged at equal intervals, the reflective coverage can be expanded, the probability of being noticed is increased, and the universality and effectiveness of the warning effect are improved.

[0086] A reflective strip placement frame 203 may be further disposed above the warning sign 201 to draw attention more clearly.

[0087] The utility model has the following implementation principles:

[0088] The construction warning device provided by the utility model is placed at the target position. When the limiting ring 106 on the surface of the limiting rod 105 is rotated and raised by the thread, the extrusion plate 108 sliding on the surface of the limiting ring 106 can cooperate with the spring 104 to lift the position height. When the extrusion plate 108 is lifted or lowered, the fixing part 102 is driven to lift or lower the position height inside the fixed bottom plate 101. When the operator steps on the pedal 103 to extend the position of the fixing part 102 inside the fixed bottom plate 101, the limiting ring 106 is rotated to the position close to the fixing part 102. The top of the extrusion plate 108 is combined, which improves the convenience of installation and disassembly when the entire equipment needs to be moved to different work locations. By setting the fixed frame 204 at the rear end of the warning sign 201, when the staff moves the entire equipment to a certain position, the pulling rod 207 drives the extension rod 206 to slide inside the sleeve 205, which is convenient for the staff to move the entire equipment. By setting the limit frame 305 and the rotating column 303 in conjunction with the auxiliary rod 302 and the supporting base plate 301, the entire equipment can be placed in a suitable position to provide good support stability.

[0089] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in the utility model. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in the utility model extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in the utility model illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

Claims

1. A construction warning device, characterized in that: include: Warning subject; A supporting and fixing mechanism, used for supporting and fixing the warning body, and comprising a fixing component, wherein the fixing component is fixed on the ground; Wherein, the fixing component comprises: Fixed bottom plate; Extruded board; An elastic support body; one end of which is fixed to the fixed bottom plate, and the other end of which is fixed to the extrusion plate; A limiting rod, one end of which passes through the extrusion plate and abuts against the fixed bottom plate; and Fixings; The fixing member sequentially passes through the extrusion plate, the fixed bottom plate and the ground to fix the fixing assembly on the ground, and the extrusion plate is slidably arranged within the sliding range formed by the limiting rod and the elastic support body.

2. The construction warning device according to claim 1, characterized in that: The surface of the limiting rod is provided with threads; The fixing assembly further comprises a limiting ring, which is sleeved on the limiting rod and movably arranged between the extrusion plate and the top of the limiting rod; Wherein, the limiting ring is threadably matched with the limiting rod and has a working position and an idle position. In the working position, the limiting ring abuts against the extrusion plate; in the idle position, the limiting ring is away from the extrusion plate.

3. The construction warning device according to claim 1, characterized in that: The limiting rod is arranged at the middle position of the extrusion plate; The elastic support body is arranged between the limiting rod and the fixing member. There are two elastic supporting bodies and two fixing members, and the two elastic supporting bodies and the two fixing members are symmetrically arranged about the limiting rod axis.

4. The construction warning device according to any one of claims 1 to 3, characterized in that: The warning subject includes: Warning signs, A supporting unit is located between the warning sign and the fixed bottom plate to support the warning sign.

5. The construction warning device according to claim 4, characterized in that: The warning sign comprises a display surface and a back surface which are arranged in a back-to-back manner, and a fixing frame is arranged on the back surface; The support and fixing mechanism also includes an auxiliary support component; Wherein, the auxiliary support component is connected to the fixing frame and has a support position, and at the support position, the plane where the auxiliary support component is located intersects with the plane where the warning sign is located.

6. The construction warning device according to claim 5, characterized in that: The auxiliary support assembly also has a first storage position. In the first storage position, the plane where the auxiliary support assembly is located is parallel to the plane where the warning sign is located.

7. The construction warning device according to claim 5, characterized in that: The auxiliary support assembly comprises: A supporting base plate in contact with the ground; An auxiliary rod, one end of which is fixed to the supporting bottom plate, and the other end of which is provided with a first through hole; Wherein, the auxiliary rod and the fixing frame are connected via a connecting mechanism, and the connecting mechanism comprises: The limiting frame comprises a frame body, which is fixedly connected to the fixing frame and has two frame plates arranged opposite to each other, and the two frame plates are respectively provided with a second through hole and a third through hole; The rotating column passes through the second through hole, the first through hole and the third through hole to connect the limiting frame and the auxiliary rod.

8. The construction warning device according to claim 5, characterized in that: The fixing frame is provided with a lifting assembly, and the lifting assembly comprises: A sleeve, fixed on the fixing frame; draw rod; An extension rod has one end extending into the sleeve and can slide along the inner space of the sleeve, and the other end is connected to the draw rod.

9. The construction warning device according to claim 8, characterized in that: The sleeve comprises a first sub-sleeve and a second sub-sleeve; The extension rod comprises a first sub-extension rod and a second sub-extension rod; One end of one of the first sub-extension rod and the second sub-extension rod extends into the first sub-sleeve, and one end of the other extends into the second sub-sleeve, and the other ends of both are respectively connected to the two ends of the withdrawal rod.

10. The construction warning device according to any one of claims 5 to 9, characterized in that: The warning subject also includes: A reflective strip placement frame is arranged on the outer wall of the warning sign; There are multiple reflective strip placement frames, and the multiple reflective strip placement frames are arranged at equal intervals.

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