Warning device for municipal engineering

Abstract

The embodiment of the invention relates to the technical field of municipal engineering, and particularly discloses a municipal engineering warning device which comprises a warning assembly, a base assembly, a rotary supporting assembly, an elastic pulling assembly and a supporting limiting assembly, and the warning assembly is used for displaying warning information; the base assembly is used for bearing the warning assembly; one end of the rotary supporting assembly is rotatably connected to the base assembly, and the other end of the rotary supporting assembly is connected with the warning assembly. The elastic pulling assembly is connected to the base assembly in a telescopic mode in the horizontal direction and used for positioning the warning assembly in the horizontal state. The supporting and limiting assembly is arranged on the base assembly and used for positioning the rotary supporting assembly in the horizontal state. The warning assembly is positioned in the vertical direction or the horizontal direction through the rotary supporting assembly, the warning assembly is horizontally placed by rotating the rotary supporting assembly to the horizontal state, and the warning assembly is folded to the horizontal state, so that the occupied area of the warning device is reduced, and the carrying convenience of the warning device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal engineering, and particularly to a warning device for municipal engineering. Background Art

[0002] Municipal engineering includes the construction of urban roads, bridges, subways, etc. During construction, in order to remind passing vehicles and pedestrians, warning devices are needed. Municipal refers to urban public utility projects such as urban roads, bridges, water supply and drainage, sewage treatment, urban flood control, gardens, road greening, street lights, environmental sanitation, etc., road traffic engineering, such as roads, interchanges, squares, traffic facilities, rail transit facilities such as railways and subways; river and lake water system engineering, such as river channels, bridges, diversion (drainage) canals, drainage and irrigation pumping stations, sluice bridges and other hydraulic structures; underground pipeline engineering, which is the common pipeline parts for water supply, drainage (including rain and sewage), power supply, communication, gas supply, heat supply, as well as special-purpose underground pipelines and civil air defense passages, etc.; overhead line engineering, power supply poles, communication poles, trolley poles and overhead pipelines with different voltage levels; street greening engineering. Street trees, shrubs, lawns, greening ornaments (such as rockeries, verandas, easels, pools, fountains, etc. in street greening), buildings and structures that account for the main part of each municipal professional project site (factory), station, point.

[0003] Patent document CN219653587U discloses a warning device for municipal engineering, which includes a bracket, a movable plate and a warning sign. The warning sign is fixedly installed at the center of both sides of the movable plate. The two side walls of the movable plate are slidably connected to the lifting grooves opened at the center of the inner sides of the two sides of the bracket. And a fixing component is arranged at the center of the bottom end of one side of the movable plate. The fixing component includes a screw rod and a rotating nut. One end of the screw rod is fixedly installed at the center of the bottom end of one side of the movable plate, and the screw rod is threadedly connected to the inside of the rotating nut. The side wall of the screw rod is slidably connected to the inside of the bracket on one side of the movable plate. By setting the bracket, the lifting groove and the fixing component, it has the function of conveniently adjusting the warning height of the warning sign, and it is convenient to adjust the warning height of the warning sign according to the use requirements. The operation is convenient and the practicability of the device is improved. However, after the warning device is used, it cannot be telescoped and folded, resulting in the inconvenience of carrying the warning device. Summary of the Invention

[0004] In view of the above problems, the embodiments of the present invention provide a warning device for municipal engineering, which overcomes the problem of inconvenience in carrying the above warning device.

[0005] The present invention provides a warning device for municipal engineering, which includes a warning component, a base component, a rotating support component, an elastic pulling component, and a support limiting component. The warning component is used to display warning information; the base component is used to carry the warning component; one end of the rotating support component is rotatably connected to the base component, and the other end of the rotating support component is connected to the warning component, which is used to vertically or horizontally support the warning component; the elastic pulling component is telescopically connected to the base component in the horizontal direction and is used to position the warning component in the horizontal state; the support limiting component is arranged on the base component and is used to position the rotating support component in the horizontal state.

[0006] Optionally, the rotating support component includes a rotating mounting seat, a mounting cylinder, a connecting shaft, and a first fixing member. The rotating mounting seat is connected to the base component. The connecting shaft is arranged at the bottom of the mounting cylinder, and the connecting shaft is rotatably connected to the rotating mounting seat. The top of the mounting cylinder is connected to the warning component. One end of the first fixing member is connected to the rotating mounting seat, and the other end of the first fixing member is used to be connected to a first positioning hole in the mounting cylinder to realize the positioning of the mounting cylinder in the vertical direction.

[0007] Optionally, the rotating support component further includes an adjusting rod and a second fixing member. One end of the adjusting rod is inserted into the mounting cylinder, and the other end of the adjusting rod is connected to the warning component. The second fixing member passes through the mounting cylinder and is used to be connected to a second positioning hole in the adjusting rod to realize the positioning between the adjusting rod and the mounting cylinder.

[0008] Optionally, the elastic pulling component includes a telescopic rod, an elastic member, and a moving plate. The base component is provided with a third positioning hole. One end of the telescopic rod is inserted into the third positioning hole in the horizontal direction, and the other end of the telescopic rod is connected to the moving plate. The moving plate is used to carry the warning component in the horizontal state. One end of the elastic member is connected in the third positioning hole, and the other end of the elastic member is connected to the telescopic rod. The elastic member is used to apply a force to the moving plate to make it close to the base component.

[0009] Optionally, the elastic pulling component further includes a protective shell and a first shock pad. The protective shell is vertically connected to the moving plate, and the first shock pad is connected to the protective shell and is used to abut against the warning component.

[0010] Optionally, the support limiting component includes a support platform and a second shock pad. The support platform is connected to the base component. The support platform is provided with a concave support groove, and the support groove is used to carry the rotating support component. The second shock pad is arranged in the support groove.

[0011] Optionally, the support and limit assembly further includes a mounting plate, a limit plate, and a limiting member. The two mounting plates are respectively arranged on both sides of the notch of the support groove. One end of the limit plate is rotatably connected to one of the mounting plates, and the other end of the limit plate is connected to the other mounting plate through the limiting member. A cavity for positioning the rotary support assembly is formed by enclosing the limit plate and the support groove.

[0012] Optionally, the support and limit assembly further includes a third shock pad, which is connected to the limit plate and is arranged opposite to the second shock pad.

[0013] Optionally, the base assembly includes a base plate, a first moving wheel, a pushing handle, and a storage battery. The first moving wheel is arranged at the bottom of the base plate, the pushing handle is arranged on the side of the base plate, and the storage battery is fixed on the base plate and is electrically connected to the warning assembly.

[0014] Optionally, the warning assembly includes a mounting frame, a controller, a warning device, and a solar panel. The mounting frame is connected to the rotary support assembly. The controller is arranged inside the mounting frame, the warning device is arranged outside the mounting frame, and both the solar panel and the warning device are electrically connected to the controller.

[0015] The beneficial effects of the embodiments of the present invention are as follows:

[0016] The warning device for municipal engineering in this solution positions the warning assembly in the vertical direction or the horizontal direction through the rotary support assembly. When in use, the rotary support assembly vertically supports the warning assembly. When not in use, the rotary support assembly rotates to the horizontal state to horizontally place the warning assembly, and folds the warning assembly to the horizontal state, which is beneficial to reducing the occupied area of the warning device and improving the portability of the warning device. The horizontally placed warning assembly is positioned by the elastic pulling assembly, and the rotary support assembly in the horizontal state is positioned by the support and limit assembly, so as to ensure that when the warning assembly is in the horizontal state, moving the base assembly will not affect the shaking or collision of the warning assembly and the rotary support assembly, facilitating the safe storage and transportation of the warning device. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual ratio.

[0018] Figure 1 It is a schematic structural diagram of the warning device for municipal engineering;

[0019] Figure 2 It is a schematic diagram of the partial structural decomposition of the rotary support assembly;

[0020] Figure 3 It is a schematic diagram of the connection structure between the rotary support assembly and the warning assembly;

[0021] Figure 4 It is a schematic diagram of the structure of the elastic pulling assembly

[0022] Figure 5 It is a schematic diagram of the structure of the support and limit assembly;

[0023] Figure 6 It is a schematic diagram of the partial structure of the support and limit assembly;

[0024] Figure 7 It is a schematic diagram of the structure of the base assembly.

[0025] Explanation of the reference numerals in the drawings:

[0026] 10. Warning assembly; 11. Installation frame; 12. Solar panel; 13. Warning device;

[0027] 20. Base assembly; 21. Base plate; 211. Third positioning hole; 22. First moving wheel; 23. Pushing handle; 24. Battery;

[0028] 30. Rotary support assembly; 31. Rotary mounting seat; 311. Bearing through hole; 32. Mounting cylinder; 321. First positioning hole; 33. Connecting shaft; 34. First fixing member; 35. Adjusting rod; 351. Second positioning hole; 36. Second fixing member;

[0029] 40. Elastic pulling assembly; 41. Telescopic rod; 42. Elastic member; 43. Moving plate; 44. Protective shell; 45. First shock pad; 46. Second moving wheel; 47. Pulling handle;

[0030] 50. Support and limit assembly; 51. Support platform; 511. Support groove; 52. Second shock pad; 53. Mounting plate; 54. Limiting plate; 55. Third shock pad; 56. Limiting member. Detailed implementation manners

[0031] For the convenience of understanding the present invention, the present invention will be described in more detail below with reference to the drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of illustration.

[0032] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used in this specification in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0033] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0034] See Figure 1-7 , this embodiment discloses a warning device for municipal engineering, including a warning component 10, a base component 20, a rotary support component 30, an elastic pulling component 40, and a support limiting component 50. The warning component 10 is used to display warning information; the base component 20 is used to carry the warning component 10; one end of the rotary support component 30 is rotatably connected to the base component 20, and the other end of the rotary support component 30 is connected to the warning component 10 for vertically or horizontally supporting the warning component 10; the elastic pulling component 40 is telescopically connected to the base component 20 in the horizontal direction for positioning the warning component 10 in a horizontal state; the support limiting component 50 is arranged on the base component 20 for positioning the rotary support component 30 in a horizontal state.

[0035] The warning device for municipal engineering in this solution positions the warning component 10 vertically or horizontally through the rotary support component 30. When in use, the rotary support component 30 vertically supports the warning component 10. When not in use, the rotary support component 30 rotates to a horizontal state to horizontally place the warning component 10, folding the warning component 10 to a horizontal state, which is beneficial to reducing the occupied area of the warning device and improving the portability of the warning device. The horizontally placed warning component 10 is positioned by the elastic pulling component 40, and the rotary support component 30 in the horizontal state is positioned by the support limiting component 50, so as to ensure that when the warning component 10 is in a horizontal state, moving the base component 20 will not affect the shaking or collision of the warning component 10 and the rotary support component 30, facilitating the safe storage and transportation of the warning device.

[0036] See Figure 2-3, the rotating support assembly 30 includes a rotating mounting base 31, a mounting cylinder 32, a connecting shaft 33, and a first fixing member 34. The rotating mounting base 31 is connected to the base assembly 20. The connecting shaft 33 is disposed at the bottom of the mounting cylinder 32, and the connecting shaft 33 is rotatably connected to the rotating mounting base 31. The top of the mounting cylinder 32 is connected to the warning assembly 10. One end of the first fixing member 34 is connected to the rotating mounting base 31, and the other end of the first fixing member 34 is used to be connected into the first positioning hole 321 inside the mounting cylinder 32 to realize the positioning of the mounting cylinder 32 in the vertical direction. The mounting cylinder 32 is provided with a bearing through hole 311 and a first fixing hole (not shown in the figure). The bearing through hole 311 is used for inserting the connecting shaft 33, and the first fixing hole is used for inserting the first fixing member 34. Among them, the connection line between the first fixing hole and the bearing through hole 311 is in the vertical direction, and the connection line between the first positioning hole 321 and the connecting shaft 33 is in the length direction of the mounting cylinder 32, so as to ensure that the mounting cylinder 32 is in the vertical direction after the first fixing member 34 is connected to the first positioning hole 321. Specifically, the first fixing member 34 is provided with an external thread, the first positioning hole 321 is provided with an internal thread, and the first fixing member 34 is threadedly connected into the first positioning hole 321 to ensure the stability of the connection.

[0037] In this embodiment, the rotating support assembly 30 further includes an adjusting rod 35 and a second fixing member 36. One end of the adjusting rod 35 is inserted into the mounting cylinder 32, the other end of the adjusting rod 35 is connected to the warning assembly 10, and the second fixing member 36 passes through the mounting cylinder 32 and is used to be connected into the second positioning hole 351 of the adjusting rod 35 to realize the positioning between the adjusting rod 35 and the mounting cylinder 32. A plurality of second positioning holes 351 are provided along the length direction of the adjusting rod 35, so as to ensure that the adjusting rod 35 can be telescoped to different heights in the vertical direction. Specifically, the second fixing member 36 is provided with an external thread, the second positioning hole 351 is provided with an internal thread, and the second fixing member 36 is threadedly connected into the second positioning hole 351 to ensure the stability of the connection.

[0038] See Figure 4 , the elastic pulling assembly 40 includes a telescopic rod 41, an elastic member 42, a moving plate 43, a protective shell 44, and a first shock pad 45. The base assembly 20 is provided with a third positioning hole 211. One end of the telescopic rod 41 is inserted into the third positioning hole 211 in the horizontal direction, the other end of the telescopic rod 41 is connected to the moving plate 43, and the moving plate 43 is used to carry the warning assembly 10 in a horizontal state. One end of the elastic member 42 is connected inside the third positioning hole 211, and the other end of the elastic member 42 is connected to the telescopic rod 41. The elastic member 42 is used to apply a force to the moving plate 43 to make it close to the base assembly 20. The protective shell 44 is connected to the moving plate 43 in the vertical direction, and the first shock pad 45 is connected to the protective shell 44 and is used to abut against the warning assembly 10.

[0039] See Figure 5, the support and limit component 50 includes a support platform 51 and a second shock pad 52. The support platform 51 is connected to the base component 20. The support platform 51 is provided with a sunken support groove 511 for carrying the rotary support component 30, and the second shock pad 52 is arranged in the support groove 511.

[0040] Further refer to Figure 6 , the support and limit component 50 further includes mounting plates 53, a limit plate 54 and a limiting member 56. Two mounting plates 53 are respectively arranged on both sides of the notch of the support groove 511. One end of the limit plate 54 is rotatably connected to one mounting plate 53, and the other end of the limit plate 54 is connected to the other mounting plate 53 through the limiting member 56. The limit plate 54 and the support groove 511 enclose a cavity for positioning the rotary support component 30.

[0041] In this embodiment, the support and limit component 50 further includes a third shock pad 55. The third shock pad 55 is connected to the limit plate 54 and is arranged opposite to the second shock pad 52, so as to provide full-range protection for the rotary support component 30.

[0042] The support platform 51 provides a position for the opening of the support groove 511. When the warning component 10 is flipped to the top of the base plate 21, the mounting cylinder 32 is located inside the support groove 511, so that the flipped warning component 10 is in a horizontal state. Then, the limit plate 54 is flipped above the support groove 511, and then the limiting member 56 passes through the top of the limit plate 54 and rotates into the positioning hole, so as to position the limit plate 54 on the top of the support groove 511. When the limit plate 54 is fixed, the third shock pad 55 at the bottom will exert pressure on the internal mounting cylinder 32, and the second shock pad 52 is located below the mounting cylinder 32, so as to further fix the warning component 10 located on the top of the base plate 21. After the warning component 10 is flipped to the top of the base plate 21, under the shock-absorbing effects of the first shock pad 45, the second shock pad 52 and the third shock pad 55, it is possible to avoid damage to the internal circuit, the warning device 13 and the solar panel 12 due to vibration generated when the warning device moves.

[0043] Refer to Figure 7 , the base component 20 includes a base plate 21, first moving wheels 22, a pushing handle 23 and a storage battery 24. The first moving wheels 22 are arranged at the bottom of the base plate 21, the pushing handle 23 is arranged on the side of the base plate 21, the storage battery 24 is fixed on the base plate 21 and is electrically connected to the warning component 10, and a third positioning hole 211 is arranged on the base plate 21. The elastic pulling component 40 further includes second moving wheels 46 and a pulling handle 47. The second moving wheels 46 are connected to the bottom of the moving plate 43 and are at the same level as the first moving wheels 22. The pulling handle 47 is arranged on the side of the moving plate 43 and is opposite to the pushing handle 23.

[0044] In this embodiment, the warning component 10 includes a mounting frame 11, a controller, a warning device 13, and a solar panel 12. The mounting frame 11 is connected to the rotary support component 30. The controller is arranged inside the mounting frame 11. The warning device 13 is arranged outside the mounting frame 11. Both the solar panel 12 and the warning device 13 are electrically connected to the controller. The solar panel 12 converts solar energy into electrical energy and stores it in the storage battery 24 for the use of the warning device 13.

[0045] The base plate 21 provides an installation position for the elastic pulling component 40 at the top and the warning device. The warning component 10 is installed through the installation cylinder 32. The bottom end of the installation cylinder 32 can rotate. When the bottom end of the installation cylinder 32 rotates, the warning component 10 changes from a vertical state to a horizontal placement on the top of the base plate 21. Then, the elastic pulling component 40 is pulled forward by the pulling handle 47 to provide a placement space for the warning component 10. At this time, the solar panel 12 in the warning component 10 is located inside the protective shell 44. Since the connecting rod moves inside the installation hole when the elastic pulling component 40 is pulled forward, the elastic member 42 is stretched to generate a reverse elastic force. When the warning component 10 rotates horizontally to the top of the base plate 21, the moving plate 43 moves backward by the reverse elastic force of the elastic member 42, so as to apply a backward pressure to the horizontally placed warning component 10, enabling the warning component 10 to be positioned on the top of the base plate 21. At the same time, the protective shell 44 can also protect the solar panel 12 in the warning component 10. The first shock pad 45 installed inside also plays a shock-absorbing role. The installation of the moving wheels makes it more convenient and fast for the warning device to move under the push of the push handle 23.

[0046] An installation shell is installed on the top of the base plate 21. A first fixing member 34 penetrates through one side of the installation shell. An installation cylinder 32 is installed inside the installation shell. Connecting shafts 33 are symmetrically installed on the outer side of the bottom end of the installation cylinder 32, and the connecting shafts 33 penetrate through the inside of the installation shell. A first positioning hole 321 is formed on one side of the installation cylinder 32, and the first positioning hole 321 is threadedly connected to the first fixing member 34. A second fixing member 36 penetrates through the back of the top of the installation cylinder 32. An adjusting rod 35 is installed inside the installation cylinder 32. A second positioning hole 351 is formed on the back of the adjusting rod 35, and the second positioning hole 351 is threadedly connected to the second fixing member 36. The top end of the adjusting rod 35 is installed with a mounting frame 11. The bottom of the mounting frame 11 is installed with a controller. A warning device 13 is installed inside the mounting frame 11, and the warning device 13 is connected to the controller. A solar panel 12 is installed on the top of the mounting frame 11, and the solar panel 12 is connected to the storage battery 24;

[0047] The installation shell provides a position for the installation of the installation cylinder 32. The installation cylinder 32 is rotatably installed through the connecting shaft 33, so that the bottom end of the installation cylinder 32 can be turned inside the installation shell. When the installation cylinder 32 needs to be used vertically, in order to ensure the stability of the installation cylinder 32 during use, the first fixing member 34 is rotated into the first positioning hole 321 to fix the installation cylinder 32. The installation cylinder 32 provides an installation position for the adjusting rod 35. The adjusting rod 35 can move up and down inside the installation cylinder 32 to increase the height of the warning device. Then, the second fixing member 36 is rotated into the second positioning hole 351 to fix the adjusting rod 35. The installation frame 11 provides a position for the installation of the warning device 13 and is used to protect the warning device 13 at the same time. The warning device 13 is turned on through the controller. After the warning device 13 is turned on, it displays a warning slogan to remind passing vehicles and pedestrians. The solar panel 12 can convert solar energy into electrical energy and supply it to the storage battery 24, making the warning device energy-saving.

[0048] The usage method of the warning device is as follows:

[0049] Step 1: First, move the warning device to the position where it needs to be used. Use the controller to turn on the warning device 13, and display the warning content through the warning device 13 to play a role in reminding passing vehicle personnel. At the same time, the solar panel 12 converts solar energy into electrical energy to supply power to the storage battery 24, achieving an energy-saving effect.

[0050] Step 2: After the warning device is used, by rotating the first fixing member 34, the first fixing member 34 no longer fixes the installation cylinder 32, so that the installation cylinder 32 rotates towards the top of the base plate 21. At this time, under the movement of the adjusting rod 35, the warning device 13 moves downward to the top end of the installation cylinder 32.

[0051] Step 3: The staff uses the moving handle to pull the moving plate 43 to the side away from the base plate 21. The rotating installation cylinder 32 is located inside the support groove 511. The moving plate 43 supports the installation frame 11. The solar panel 12 is located inside the protective shell 44. The elastic force of the stretched elastic member 42 is used to position the rotated warning component 10.

[0052] Step 4: Then, turn the limiting plate 54 to the top of the support groove 511 to position the internal installation cylinder 32. The third shock pad 55 installed at the bottom of the limiting plate 54 will exert pressure on the installation cylinder 32 to ensure the stability of the installation cylinder 32.

[0053] The working principle of the present invention is as follows: First, move the warning device to the position where it is needed. Use the controller to turn on the warning device 13, and display the warning content through the warning device 13 to play a role in reminding passing vehicles and personnel. After the warning device is used, the staff uses the moving handle to pull the moving plate 43 to the side away from the base plate 21, and turn the mounting cylinder 32 to the top of the base plate 21. The mounting cylinder 32 is located inside the support groove 511. The solar panel 12 is supported by the moving plate 43 and is located inside the protective shell 44, so that the warning device can be rotated and placed horizontally after use, reducing the volume of the warning device for easy storage and carrying.

[0054] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A warning device for municipal engineering, characterized in that: include: A warning component, wherein the warning component is used to display warning information; A base assembly, the base assembly being used to carry the warning assembly; A rotating support assembly, one end of which is rotatably connected to the base assembly, and the other end of which is connected to the warning assembly, for vertically or horizontally supporting the warning assembly; An elastic pulling component, which is connected to the base component in a horizontal direction and can be extended and retracted, and is used to position the warning component in a horizontal state; A support limiting assembly is provided on the base assembly and is used to position the rotating support assembly in a horizontal state.

2. The warning device for municipal engineering according to claim 1, characterized in that: The rotating support assembly includes a rotating mounting seat, a mounting tube, a connecting shaft and a first fixing member. The rotating mounting seat is connected to the base assembly. The connecting shaft is arranged at the bottom of the mounting tube and can be rotatably connected to the rotating mounting seat. The top of the mounting tube is connected to the warning assembly. One end of the first fixing member is connected to the rotating mounting seat, and the other end of the first fixing member is used to connect to the first positioning hole in the mounting tube to realize the positioning of the mounting tube in the vertical direction.

3. The warning device for municipal engineering according to claim 2, characterized in that: The rotating support assembly also includes an adjusting rod and a second fixing member, one end of the adjusting rod is inserted into the mounting tube, the other end of the adjusting rod is connected to the warning assembly, and the second fixing member is passed through the mounting tube and is used to connect to the second positioning hole of the adjusting rod to achieve positioning between the adjusting rod and the mounting tube.

4. The warning device for municipal engineering according to claim 1, characterized in that: The elastic pulling assembly includes a telescopic rod, an elastic member and a movable plate. The base assembly is provided with a third positioning hole. One end of the telescopic rod is inserted into the third positioning hole in a horizontal direction. The other end of the telescopic rod is connected to the movable plate. The movable plate is used to carry the warning assembly in a horizontal state. One end of the elastic member is connected to the third positioning hole. The other end of the elastic member is connected to the telescopic rod. The elastic member is used to apply a force to the movable plate to make it close to the base assembly.

5. The warning device for municipal engineering according to claim 4, characterized in that: The elastic pulling component also includes a protective shell and a first shock-absorbing pad. The protective shell is connected to the movable plate in a vertical direction. The first shock-absorbing pad is connected to the protective shell and is used to abut against the warning component.

6. The warning device for municipal engineering according to claim 1, characterized in that: The support and limiting assembly includes a support platform and a second shock-absorbing pad. The support platform is connected to the base assembly. The support platform is provided with a recessed support groove, which is used to support the rotating support assembly. The second shock-absorbing pad is arranged in the support groove.

7. The warning device for municipal engineering according to claim 6, characterized in that: The support and limit assembly also includes a mounting plate, a limit plate and a limit member. The two mounting plates are respectively arranged on both sides of the slot of the support slot. One end of the limit plate is rotatably connected to one mounting plate, and the other end of the limit plate is connected to the other mounting plate through the limit member. The limit plate and the support slot are surrounded by a cavity for positioning the rotating support assembly.

8. The warning device for municipal engineering according to claim 7, characterized in that: The support and limiting assembly also includes a third shock-absorbing pad, which is connected to the limiting plate and is arranged opposite to the second shock-absorbing pad.

9. The warning device for municipal engineering according to claim 1, characterized in that: The base assembly includes a base plate, a first moving wheel, a pushing handle and a battery. The first moving wheel is arranged at the bottom of the base plate, the pushing handle is arranged at the side of the base plate, and the battery is fixed on the base plate and electrically connected to the warning assembly.

10. The warning device for municipal engineering according to claim 1, characterized in that: The warning component includes an installation frame, a controller, an alarm and a solar panel. The installation frame is connected to the rotating support component, the controller is arranged in the installation frame, the alarm is arranged outside the installation frame, and the solar panel and the alarm are both electrically connected to the controller.

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