Warning device for municipal road and bridge construction

Abstract

The utility model discloses a warning device for municipal road and bridge construction, which comprises a warning board body and a support frame, and the warning board body is mounted on the support frame; the transparent protective sleeve is movably arranged on the warning board body in a sleeving manner; the cleaning assembly is installed on the supporting frame, the cleaning assembly comprises a cleaning strip and a driving device, the cleaning strip is arranged in the axial direction of the transparent protective sleeve and abuts against the outer wall of the transparent protective sleeve, and the driving device is connected with the transparent protective sleeve and used for driving the transparent protective sleeve to rotate around the warning board body; through the transparent protection sleeve, the driving device and the cleaning strip, dust and stains can be prevented from being directly attached to the warning board body, the warning board body can be prevented from being blown by wind, exposed to the sun and drenched by rain, the protection effect is good, the warning effect of the warning board body is not affected, the service life of the warning board body is prolonged, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal construction, in particular to a warning device used for municipal road and bridge construction. Background Art

[0002] During municipal road and bridge construction, warning devices are used to warn and remind pedestrians and drivers to pay attention to the construction area to avoid injuries to pedestrians or vehicles due to accidents during construction, so as to ensure construction safety. Common warning devices used in municipal road and bridge construction include warning signs, flashing lights, anti-collision warning poles and isolation railings. Warning signs are usually used before or during construction to convey information with eye-catching colors, patterns and texts to serve as a warning.

[0003] Traditional warning signs are easily attached with dust and stains during use, which causes the information on the warning signs to be blocked and fail to serve as a warning. In addition, traditional warning signs are exposed to the outside for a long time at the construction site, and are easily damaged and discolored by wind, sun and rain, which leads to missing information on the warning signs, accelerated aging of the warning signs, and increased costs. Utility Model Content

[0004] The purpose of the utility model is to provide a warning device for municipal road and bridge construction, so as to solve the problem in the prior art that the warning information of the warning signboard is easily blocked by dust and stains during use, and is easily damaged and discolored by wind, sun and rain, thus failing to play a warning role.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A warning device for municipal road and bridge construction, comprising:

[0007] A warning plate body and a support frame, wherein the warning plate body is mounted on the support frame;

[0008] A transparent protective cover, wherein the transparent protective cover is movably mounted on the warning plate body;

[0009] A cleaning assembly is installed on a supporting frame, and the cleaning assembly includes a cleaning strip and a driving device. The cleaning strip is arranged along the axial direction of the transparent protective cover and abuts against the outer wall of the transparent protective cover. The driving device is connected to the transparent protective cover and is used to drive the transparent protective cover to rotate around the warning plate body.

[0010] According to the above-mentioned technical means, the transparent protective cover has a shielding effect but does not affect the display of the warning information on the warning board body. A transparent protective cover is arranged on the surface of the warning board body to prevent dust and stains from directly adhering to the warning board body and shielding the warning information on the warning board body. At the same time, the transparent protective cover can also prevent the warning board body from being blown by wind, sun and rain, thereby preventing the warning information on the warning board body from changing color and missing and slowing down the aging speed of the warning board body, so that the warning function of the warning board body is not affected, the service life of the warning board body is extended, the cost is reduced, and the protective effect is good. During use, when the dust and stains attached to the transparent protective cover affect the display of the warning information on the warning board body, the driving device drives the transparent protective cover to rotate around the warning board body, so that the outer wall of the transparent protective cover is cleaned and wiped by the cleaning strip in turn to ensure the transparency of the surface of the transparent protective cover, thereby not affecting the warning function of the warning board body.

[0011] Furthermore, it also includes two protective mounting sleeves, which are symmetrically arranged and respectively mounted on the support frames, the two ends of the warning plate body are respectively mounted on the inner walls of the two protective mounting sleeves, the two ends of the transparent protective sleeve extend into the two protective mounting sleeves respectively, and the cleaning strip is installed between the two protective mounting sleeves.

[0012] According to the above technical means, by respectively arranging protective mounting covers at both ends of the transparent protective cover, the warning board body can be located in a closed space composed of two protective mounting covers and the transparent protective cover to prevent dust, stains and rainwater from adhering to the warning board body through the two ends of the transparent protective cover, causing damage to the warning board body and covering up information. The structure is simple and the protective effect is good.

[0013] Furthermore, it also includes a dust shield, the two ends of which are respectively fixed on the side walls of the two protective mounting sleeves, and the dust shield is located on the side of the transparent protective sleeve away from the warning plate body with warning information, and the cleaning strip is installed on the dust shield.

[0014] According to the above-mentioned technical means, when warning information is provided on one side of the warning board body and no warning information is provided on the other side, the dust shield is used to shield and protect the side of the transparent protective cover away from the warning board body with the warning information, to prevent dust and stains from adhering to the unused side of the transparent protective cover, and at the same time to prevent the unused side of the transparent protective cover from being disturbed by natural factors such as wind, sun and rain and affecting the protective effect. During use, when the dust and stains attached to the transparent protective cover affect the display of the warning information on the warning board body, the driving device drives the transparent protective cover to rotate so that it exchanges the unused side to the side of the warning board body with the warning information. While rotating, the cleaning strip cleans the dust and stains attached to the surface of the transparent protective cover, thereby realizing recycling, extending the service life of the transparent protective cover and improving the protective effect.

[0015] Furthermore, the cleaning component also includes two belts and two transmission shafts, the two belts are symmetrically arranged and respectively connected to the two ends of the transparent protective cover, the two ends of the two belts are respectively provided with driving wheels, and each of the driving wheels is rotatably mounted on the inner wall of an adjacent protective mounting cover, the two transmission shafts are both located in the transparent protective cover and are arranged along the axial direction of the transparent protective cover, the two ends of the two transmission shafts respectively extend out of the transparent protective cover and are connected to adjacent driving wheels, and the driving device is connected to one of the driving wheels.

[0016] According to the above-mentioned technical means, belt transmission has the advantages of good stability, wide application range, simple structure, strong adaptability and low cost. During use, when the transparent protective cover needs to be rotated, the driving device drives one of the driving wheels to rotate, thereby driving the transparent protective cover to rotate around the warning plate body under the transmission action of the two transmission shafts, the other three driving wheels and the two belts. It has a simple structure, good transmission effect and high practicality.

[0017] Furthermore, support wheels are fixed to the two transmission shafts respectively, and each of the support wheels can abut against the inner wall of an adjacent transparent protective cover.

[0018] According to the above technical means, the support wheels support the transparent protective cover. When the driving device drives the transparent protective cover to rotate around the warning plate body, under the action of the two transmission shafts, each support wheel rotates accordingly, thereby improving the transmission effect.

[0019] Furthermore, the support frame includes a base and two support columns, the two support columns are symmetrically arranged, and the bottom ends of the two support columns are respectively vertically fixed on the base, the top ends of the two support columns are respectively provided with lifting devices, and the two protective mounting sleeves are respectively installed on the two lifting devices.

[0020] According to the above technical means, the warning board body and the transparent protective cover are installed on the lifting device through two protective mounting covers. The lifting device can drive the protective mounting covers to move up and down along the support column, thereby adjusting the height of the warning board body and the transparent protective cover. The structure is simple, the practicability is high, and the application range is wide.

[0021] Furthermore, the two lifting devices each include a sliding sleeve and a locking structure. The two sliding sleeves are respectively slidably fitted with the top ends of the two support columns. The two protective mounting sleeves are respectively installed on the opposite surfaces of the two sliding sleeves. The two locking structures are respectively installed on the two sliding sleeves for fixing the sliding sleeves on the support columns.

[0022] According to the above technical means, the locking structure is used to lock the sliding sleeve on the support column to ensure the stability of the sliding sleeve. The two sliding sleeves slide synchronously on the two support columns respectively, so that the two protective mounting sleeves can be driven to move up and down respectively, so as to realize the height adjustment of the warning plate body and the transparent protective cover to adapt to different usage scenarios. After the height is adjusted to the appropriate position, the sliding sleeve is locked by the locking structure. The structure is simple and the adjustment is convenient.

[0023] Furthermore, the locking structure includes a latch and a mounting seat, the mounting seat is fixed on the sliding sleeve, the latch is rotatably mounted on the mounting seat via a rotating shaft, the sliding sleeve is provided with a notch, and the support column is provided with more than two positioning grooves along its length direction, and the latch can pass through the notch and be plugged into one of the positioning grooves.

[0024] According to the above technical means, the sleeve can be locked on the support column by passing the pin through the notch and plugging it into the positioning groove. When the height of the warning plate body needs to be adjusted, the sleeve is slid along the support column. After the warning plate body is adjusted to the appropriate height through the protective mounting sleeve, the pin is rotated to pass through the notch and plugged into the corresponding positioning groove, thereby locking the sleeve on the support column. The adjustment is convenient and the stability is good.

[0025] Furthermore, a handle is fixed on the rotating shaft.

[0026] According to the above technical means, the handle is used to rotate the rotating shaft, thereby driving the latch to rotate, which is convenient for operation.

[0027] Furthermore, a torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively connected to the handle and the mounting seat.

[0028] According to the above technical means, when the handle drives the latch to rotate through the rotating shaft, the torsion spring can not only limit the rotation of the latch, but also drive the latch to reset under the action of elastic force, and the structure is simple.

[0029] Beneficial effects achieved by the utility model:

[0030] 1. The transparent protective cover in the utility model has a shielding effect but does not affect the display of the warning information on the warning board body. By arranging a transparent protective cover on the surface of the warning board body, dust and stains can be prevented from directly adhering to the warning board body and shielding the warning information on the warning board body, thereby achieving good protective effect.

[0031] 2. The transparent protective cover can also prevent the warning board body from being blown by wind, sun and rain, thereby preventing the warning information on the warning board body from changing color or missing and slowing down the aging speed of the warning board body, so that the warning function of the warning board body is not affected, extending the service life of the warning board body and reducing costs.

[0032] 3. The transparent protective cover is driven to rotate by the driving device in the cleaning component. During the rotation, the cleaning strip wipes and cleans the dust and stains on the surface of the transparent protective cover to ensure the transparency of the surface of the transparent protective cover. At the same time, the use surface of the transparent protective cover can be replaced to avoid one side of the transparent protective cover being exposed to one direction for a long time and being affected by wind, sun and rain, resulting in rapid aging. The service life of the transparent protective cover is extended, the warning function of the warning board body is not affected, and the use cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the warning device of the utility model;

[0034] Figure 2 For this utility model Figure 1 A magnified view of middle;

[0035] Figure 3 This is a rear view structural diagram of the warning device of the utility model;

[0036] Figure 4 It is a schematic diagram of the three-dimensional structure of the warning plate body of the utility model without the transparent protective cover;

[0037] Figure 5 For this utility model Figure 4 Enlarged view of B.

[0038] Among them, 1-warning board body; 2-support frame; 21-base; 22-support column; 23-lifting device; 231-sliding sleeve; 232-locking structure; 2321-latch; 2322-mounting seat; 2323-rotating shaft; 2324-notch; 2325-handle; 2326-torsion spring; 3-transparent protective cover; 41-cleaning strip; 42-driving device; 43-belt; 44-transmission shaft; 441-support wheel; 45-driving wheel; 5-protective mounting cover; 6-dust shield.

[0039] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. Specific embodiments

[0040] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0042] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0043] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0044] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0045] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0046] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.

[0047] In this embodiment, a warning device for municipal road and bridge construction, such as Figure 1 , Figure 3 and Figure 4As shown, it includes: a warning plate body 1 and a support frame 2, the warning plate body 1 is installed on the support frame 2; a transparent protective cover 3, the transparent protective cover 3 is movably sleeved on the warning plate body 1; a cleaning component, the cleaning component is installed on the support frame 2, the cleaning component includes a cleaning bar 41 and a driving device 42, the cleaning bar 41 is arranged along the axial direction of the transparent protective cover 3 and abuts against the outer wall of the transparent protective cover 3, the driving device 42 is connected to the transparent protective cover 3, and is used to drive the transparent protective cover 3 to rotate around the warning plate body 1.

[0048] The present embodiment arranges a transparent protective cover 3 on the surface of the warning board body 1 to prevent dust and stains from directly adhering to the warning board body 1, thereby shielding the warning information on the warning board body 1. At the same time, the transparent protective cover 3 can also prevent the warning board body 1 from being blown by the wind, exposed to the sun and rain, thereby preventing the warning information on the warning board body 1 from changing color or being missing and affecting the warning function. At the same time, it can also prevent the warning board body 1 from being damaged by being soaked in rain, slowing down the aging speed of the warning board body 1, so that the warning function of the warning board body 1 is not affected, the service life of the warning board body 1 is extended, and the cost is reduced. Specifically, the transparent protective cover 3 is transparent and has a shielding effect but does not affect the display of the warning information on the warning board body 1. When in use, when the dust and stains attached to the transparent protective cover 3 affect the warning information on the warning board body 1 When the warning information is displayed, the driving device 42 is started to drive the transparent protective cover 3 to rotate on the surface of the warning board body 1. During the rotation process, the cleaning strip 41 wipes and cleans the surface of the transparent protective cover 3, thereby ensuring the transparency of the surface of the transparent protective cover 1, so that the warning function of the warning board body 1 is not affected, and the protective effect is good. At the same time, the use surface of the transparent protective cover 1 can be replaced to avoid one side of the transparent protective cover 1 being exposed to one direction for a long time and being affected by wind, sun and rain, resulting in rapid aging, thereby extending the service life of the transparent protective cover 1 and reducing the cost of use; wherein the driving device 42 can be a motor-driven driving wheel transmission belt to drive the transparent protective cover 3 to rotate, or a motor-driven sprocket transmission chain to drive the transparent protective cover 3 to rotate, or a motor-driven gear set to drive the transparent protective cover 3 to rotate.

[0049] In this embodiment, two protective mounting sleeves 5 are also included, and the two protective mounting sleeves 5 are symmetrically arranged and respectively installed on the support frame 2, the two ends of the warning plate body 1 are respectively installed on the inner walls of the two protective mounting sleeves 5, the two ends of the transparent protective cover 3 extend into the two protective mounting sleeves 5, and the cleaning strip 41 is installed between the two protective mounting sleeves 5.

[0050] In this embodiment, Figure 1 and Figure 4As shown, by respectively arranging protective mounting covers 5 at both ends of the transparent protective cover 3, the warning board body 1 can be located in a closed space composed of the two protective mounting covers 5 and the transparent protective cover 3, so as to prevent dust, stains and rainwater from adhering to the warning board body 1 through the two ends of the transparent protective cover, thereby causing damage to the warning board body 1 and covering up information. The structure is simple and the protective effect is good.

[0051] In this embodiment, a dust shield 6 is also included, and the two ends of the dust shield 6 are respectively fixed on the side walls of the two protective mounting sleeves 5, and the dust shield 6 is located on the side of the transparent protective sleeve 3 away from the warning plate body 1 with warning information, and the cleaning strip 41 is installed on the dust shield 6.

[0052] In this embodiment, Figure 1 , Figure 3 and Figure 4 As shown, the dust shield 6 is used to shield and protect the surface of the transparent protective cover 3 to prevent dust and stains from adhering to the unused side of the transparent protective cover 3. At the same time, it can also prevent the unused side of the transparent protective cover 3 from being disturbed by natural factors such as wind, sun and rain, which may affect the protective effect. Specifically, during use, when one side of the warning plate body 1 is provided with warning information, and the other side is not provided with warning information, the dust shield 6 is located on the side of the warning plate body 1 without warning information. The side of the transparent protective cover 3 shielded by the dust shield 6 is the unused side, and the side exposed to the outside is the used side. When dust and stains attached to the used surface of the transparent protective cover 3 affect When the warning information on the warning board body 1 is displayed, the driving device 42 drives the transparent protective cover 3 to rotate. During the rotation process, the cleaning strip 41 wipes and cleans the surface of the transparent protective cover 3, thereby ensuring the transparency of the surface of the transparent protective cover 1, so that the warning function of the warning board body 1 is not affected, and the protective effect is good. At the same time, the unused surface of the transparent protective cover 1 can be exchanged with the used surface to avoid a certain side of the transparent protective cover 1 being exposed to one direction for a long time and being affected by wind, sun and rain, resulting in rapid aging, thereby extending the service life of the transparent protective cover 1, reducing the cost of use, achieving recycling, and improving the protective effect.

[0053] Further, as a preferred embodiment, the cleaning assembly also includes two belts 43 and two transmission shafts 44, the two belts 43 are symmetrically arranged and respectively connected to the two ends of the transparent protective cover 3, the two ends of the two belts 43 are respectively sleeved with driving wheels 45, each of the driving wheels 45 is rotatably mounted on the inner wall of the adjacent protective mounting cover 5, the two transmission shafts 44 are both located in the transparent protective cover 3 and are arranged along the axial direction of the transparent protective cover 3, the two ends of the two transmission shafts 44 respectively extend out of the transparent protective cover 3 and are connected to the adjacent driving wheels 45, and the driving device 42 is connected to one of the driving wheels 45; this embodiment Figure 4 and Figure 5As shown, specifically, the driving device 42 is a motor. During use, when the transparent protective cover 3 needs to rotate, the motor drives one of the driving wheels 45 to rotate, and drives one end of the transparent protective cover 3 to rotate from an adjacent belt 43. At the same time, under the transmission action of the other three driving wheels 45 and the two transmission shafts 44, the other end of the transparent protective cover 3 is driven to rotate synchronously through another belt 43. The two ends of the transparent protective cover 3 are respectively driven by two belts 43, which has good stability, wide application range, simple structure, strong adaptability, low cost and good transmission effect.

[0054] In this embodiment, support wheels 441 are fixed to the two transmission shafts 44, respectively, and each of the support wheels 441 can abut against the inner wall of the adjacent transparent protective cover 3; Figure 4 As shown, the support wheels 441 are located inside the transparent protective cover 3 and support the transparent protective cover 3. When the motor drives the driving wheel 45 and the transmission belt 43 to drive the transparent protective cover 3 to rotate around the warning plate body 1, each support wheel 441 rotates with the transmission shaft 44, thereby improving the transmission effect.

[0055] In this embodiment, the support frame 2 includes a base 21 and two support columns 22, the two support columns 22 are symmetrically arranged, and the bottom ends of the two support columns 22 are respectively vertically fixed on the base 21, and the top ends of the two support columns 22 are respectively provided with lifting devices 23, and the two protective mounting sleeves 5 are respectively installed on the two lifting devices 23; Figure 1 , Figure 3 and Figure 4 As shown, the warning plate body 1 and the transparent protective cover 3 are installed on the lifting device 23 through two protective installation covers 5. The lifting device 23 can drive the protective installation cover 5 to move up and down along the support column 22, so as to adjust the height of the warning plate body 1 and the transparent protective cover 3. The structure is simple, the practicability is high, and the application range is wide.

[0056] In this embodiment, the two lifting devices 23 each include a sliding sleeve 231 and a locking structure 232. The two sliding sleeves 231 are respectively slidably fitted with the top ends of the two support columns 22. The two protective mounting sleeves 5 are respectively installed on the opposite surfaces of the two sliding sleeves 231. The two locking structures 232 are respectively installed on the two sliding sleeves 231 for fixing the sliding sleeves 231 on the support column 22.

[0057] In this embodiment, Figure 1 , Figure 3 and Figure 4As shown, during specific use, the two sliding sleeves 231 are synchronously slid on the two supporting columns 22 respectively, thereby driving the two protective mounting sleeves 5 to move up and down, so as to realize the height adjustment of the warning plate body 1 and the transparent protective cover 3 to adapt to different usage scenarios. When the height is adjusted to the appropriate position, the sliding sleeve 231 is locked on the supporting column 22 through the locking structure 232, which has good stability, simple structure and convenient adjustment.

[0058] In this embodiment, the locking structure 232 includes a latch 2321 and a mounting seat 2322. The mounting seat 2322 is fixed on the sleeve 231. The latch 2321 is rotatably mounted on the mounting seat 2322 via a rotating shaft 2323. A notch 2324 is provided on the sleeve 231. More than two positioning grooves are provided on the support column 22 along its length direction. The latch 2321 can pass through the notch 2324 and be plugged into one of the positioning grooves.

[0059] In this embodiment, Figure 2 As shown, in actual use, when the height of the warning plate body 1 needs to be adjusted, the sliding sleeve 231 is slid along the support column 22. After the warning plate body 1 is adjusted to a suitable height through the protective mounting sleeve 5, the latch 2321 is rotated through the rotating shaft 2323, so that the latch 2321 passes through the notch 2324 and is plugged into the corresponding positioning groove on the support column 22, thereby locking the sliding sleeve 231 on the support column 22. The structure is simple, the adjustment is convenient, and the stability is good.

[0060] In this embodiment, a handle 2325 is fixed on the rotating shaft 2323; Figure 2 As shown, the rotating shaft 232 is rotated by the handle 2325, thereby driving the latch 2321 to rotate, which is convenient for operation.

[0061] In this embodiment, a torsion spring 2326 is sleeved on the rotating shaft 2323, and the two ends of the torsion spring 2326 are respectively connected to the handle 2325 and the mounting seat 2322; Figure 2 As shown, specifically, when the torsion spring 2326 is in a natural state, the pin 2321 passes through the notch 2324 and is in a state of being plugged into the corresponding positioning groove. When the sliding sleeve 231 is adjusted in height, the handle 2325 drives the pin 2321 to rotate through the rotating shaft 232, and the torsion spring 2326 compresses or stretches the limit pin 2321 to rotate. After the height is adjusted to a suitable position, the torsion spring 2326 drives the pin to automatically reset under the action of elastic force, thereby plugging into the corresponding positioning groove to achieve locking of the sliding sleeve 231. The structure is simple and the adjustment is convenient.

[0062] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A warning device for municipal road and bridge construction, characterized in that: include: A warning plate body (1) and a support frame (2), wherein the warning plate body (1) is mounted on the support frame (2); A transparent protective cover (3), wherein the transparent protective cover (3) is movably mounted on the warning plate body (1); A cleaning assembly is mounted on a support frame (2), the cleaning assembly comprising a cleaning bar (41) and a driving device (42), the cleaning bar (41) being arranged along the axial direction of the transparent protective cover (3) and abutting against the outer wall of the transparent protective cover (3), the driving device (42) being connected to the transparent protective cover (3) and being used for driving the transparent protective cover (3) to rotate around the warning plate body (1).

2. A warning device for municipal road and bridge construction according to claim 1, characterized in that: It also comprises two protective mounting sleeves (5), the two protective mounting sleeves (5) are symmetrically arranged and respectively mounted on the support frame (2), the two ends of the warning plate body (1) are respectively mounted on the inner walls of the two protective mounting sleeves (5), the two ends of the transparent protective sleeve (3) respectively extend into the two protective mounting sleeves (5), and the cleaning strip (41) is mounted between the two protective mounting sleeves (5).

3. A warning device for municipal road and bridge construction according to claim 2, characterized in that: It also comprises a dust shield (6), the two ends of which are respectively fixed on two protective mounting sleeves (5), and the dust shield (6) is located on a side of the transparent protective sleeve (3) away from the warning plate body (1) provided with warning information, and the cleaning strip (41) is mounted on the dust shield (6).

4. A warning device for municipal road and bridge construction according to claim 2, characterized in that: The cleaning assembly further comprises two belts (43) and two transmission shafts (44); the two belts (43) are symmetrically arranged and respectively connected to the two ends of the transparent protective cover (3); the two ends of the two belts (43) are respectively sleeved with driving wheels (45); each of the driving wheels (45) is rotatably mounted on the inner wall of an adjacent protective installation cover (5); the two transmission shafts (44) are both located in the transparent protective cover (3) and are arranged along the axial direction of the transparent protective cover (3); the two ends of the two transmission shafts (44) respectively extend out of the transparent protective cover (3) and are connected to the adjacent driving wheels (45); and the driving device (42) is connected to one of the driving wheels (45).

5. A warning device for municipal road and bridge construction according to claim 4, characterized in that: Support wheels (441) are respectively fixed on the two transmission shafts (44), and each of the support wheels (441) can abut against the inner wall of an adjacent transparent protective cover (3).

6. The warning device for municipal road and bridge construction according to claim 2, characterized in that: The support frame (2) comprises a base (21) and two support columns (22), the two support columns (22) are symmetrically arranged, and the bottom ends of the two support columns (22) are respectively vertically fixed on the base (21), and the top ends of the two support columns (22) are respectively provided with lifting devices (23), and the two protective installation sleeves (5) are respectively installed on the two lifting devices (23).

7. A warning device for municipal road and bridge construction according to claim 6, characterized in that: The two lifting devices (23) each comprise a sliding sleeve (231) and a locking structure (232); the two sliding sleeves (231) are respectively slidably fitted with the top ends of the two support columns (22); the two protective mounting sleeves (5) are respectively mounted on opposite surfaces of the two sliding sleeves (231); and the two locking structures (232) are respectively mounted on the two sliding sleeves (231) for fixing the sliding sleeves (231) on the support columns (22).

8. A warning device for municipal road and bridge construction according to claim 7, characterized in that: The locking structure (232) comprises a latch (2321) and a mounting seat (2322); the mounting seat (2322) is fixed on the sliding sleeve (231); the latch (2321) is rotatably mounted on the mounting seat (2322) via a rotating shaft (2323); a notch (2324) is provided on the sliding sleeve (231); and more than two positioning grooves are provided on the support column (22) along its length direction; the latch (2321) can pass through the notch (2324) and be plugged into one of the positioning grooves.

9. A warning device for municipal road and bridge construction according to claim 8, characterized in that: A handle (2325) is fixed on the rotating shaft (2323).

10. A warning device for municipal road and bridge construction according to claim 9, characterized in that: The rotating shaft (2323) is sleeved with a torsion spring (2326), and two ends of the torsion spring (2326) are respectively connected to the handle (2325) and the mounting seat (2322).

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