Traffic height limiting equipment for municipal road

Abstract

The invention relates to the technical field of road height limiting equipment, in particular to traffic height limiting equipment for municipal roads, which comprises a height limiting frame arranged on the ground, limiting frames are fixedly connected between two opposite side surfaces in the height limiting frame, and a height limiting plate is slidably connected in the two limiting frames; the top face of the height limiting plate is fixedly connected with a signboard, the straightening mechanism is arranged above the height limiting frame and connected with the height limiting frame in a sliding mode, and the straightening mechanism comprises a sliding moving frame located at the top of the height limiting frame. According to the device, through detachable connection between the straightening mechanism and the height limiting frame, the straightening mechanism can be conveniently taken down from the height limiting frame for repeated utilization, the production cost of the device can be reduced, maintenance of workers is facilitated, the height limiting plate is straightened through the straightening mechanism, the height limiting plate does not need to be detached for maintenance, and the working efficiency is improved. Therefore, tedious operation of disassembly, maintenance and installation can be avoided, a large amount of time is saved, and traffic jam is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of highway height limiting equipment, in particular to a height limiting equipment for use on municipal highways. Background Art

[0002] At present, in order to ease the pressure of traffic, infrastructure such as bridges, culverts, and tunnels are usually built on the roads. In order to prevent over-height vehicles from causing damage to the infrastructure, height limit equipment is usually set up at the entrance of these infrastructures to restrict the passage of over-height vehicles to ensure the safety of the road. At present, height limit equipment usually includes two types, one is a fixed height limit frame, and the other is an adjustable height limit frame. In order to be more practical, the adjustable height limit frame is usually used.

[0003] At present, some over-height vehicles often collide with height limit frames on some roads, causing the height limit plates on the height limit frames to be deformed. The current repair of the height limit plates usually requires first removing the height limit plates from the height limit frames, then straightening them with a straightening machine, and finally installing them in the height limit frames. The whole process is cumbersome and time-consuming, which greatly hinders the passage of vehicles. Summary of the invention

[0004] The object of the present invention is to provide a height-limiting device for use on municipal roads to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A traffic height limiting device for a municipal highway, comprising:

[0007] A height limiting frame is arranged on the ground, wherein two opposite side surfaces inside the height limiting frame are fixedly connected with a limit frame, and two limit frames are slidably connected with a limit plate, and a top surface of the limit plate is fixedly connected with an identification plate;

[0008] A straightening mechanism is arranged above the height limit frame and is slidably connected to the height limit frame, the straightening mechanism comprises a moving frame sliding on the top of the height limit frame, and two opposite side surfaces inside the moving frame are fixedly connected with moving components for straightening the height limit plate;

[0009] A rotating mechanism is arranged on the inner top surface of the height limit frame and is used to change the value of the sign;

[0010] Two lifting mechanisms are arranged on both sides of the height limit frame and buried underground, and are used to control the lifting of the height limit frame.

[0011] Furthermore, a slide groove is provided on one side of the top of the height limiting frame, a protective shell is fixedly connected to the top surface of the height limiting frame, a rack 1 is fixedly connected to the top surface of the protective shell, sliders that slide with the slide grooves at corresponding positions are fixedly connected to the two opposite side surfaces inside the movable frame, a drive motor 1 is fixedly connected to the inner top surface of the movable frame through a pad, and a gear 1 meshing with the rack 1 is fixedly connected to the output end of the drive motor 1.

[0012] Furthermore, a baffle is hinged at the bottom end of one side of the top of the height limiting frame, two symmetrical threaded holes are opened on the side of the corresponding baffle of the height limiting frame, and two symmetrical bolts are penetrated on one side of the baffle and screwed into the threaded holes at corresponding positions.

[0013] Further, the mobile component includes:

[0014] A rectangular frame is fixedly connected to the inner side of the moving frame;

[0015] A bidirectional screw rod is rotatably connected between two short side surfaces of the inner side of the rectangular frame at corresponding positions;

[0016] Two symmetrical moving blocks penetrate through both ends of the outer wall of the bidirectional screw rod screwed at corresponding positions;

[0017] Two symmetrical hydraulic cylinders 1 penetrate one side of a moving block fixed at a corresponding position, the output end of the hydraulic cylinder 1 is fixedly connected to a connecting frame, and a round roller is rotatably connected inside the connecting frame;

[0018] A pad, fixedly connected to the side surface of the rectangular frame at a corresponding position;

[0019] The second driving motor is fixedly connected to the top surface of the pad at the corresponding position, and the output end of the second driving motor passes through the side surface of the rectangular frame and is fixedly connected to the bidirectional lead screw at the corresponding position.

[0020] Furthermore, a circular groove is provided on the front side of the identification plate, a through hole is provided on the back side of the identification plate at a position corresponding to the circular groove, a plurality of hemispherical grooves are provided in an annular manner at equal angles on the inner wall of the circular groove, a plug-in block is clamped in the interior of the circular groove, a plurality of cylindrical grooves are provided in an annular manner at equal angles on the outer wall of the plug-in block, and a spring steel ball is fixedly connected to the interior of the cylindrical groove and clamped in the hemispherical groove at the corresponding position.

[0021] Furthermore, the plug-in block is made of metal iron, and both sides of the inner top surface of the height limit frame are fixedly connected with fixed plates, and both ends of the opposite side surfaces of the two fixed plates are fixedly connected with electric push rods, and the output end of the electric push rod is fixedly connected with a connecting block, and a magnet is embedded and fixed on one side of the connecting block.

[0022] Further, a chamber is provided inside the plug-in block, a counterweight is vertically fixedly connected inside the chamber, a camera is fixedly connected to the side of one of the fixing plates, and the rotating mechanism comprises:

[0023] Two symmetrical rotating rods are rotatably connected between two fixed plates;

[0024] A turntable is fixedly connected to the outer wall of a rotating rod at a corresponding position, a side surface of the turntable is provided with a plurality of circular grooves 2 at equal angles, an inner wall of the circular grooves 2 is provided with an annular groove engaged with a plurality of spring steel balls at corresponding positions, and a through hole 2 is provided at the corresponding position of the circular grooves 2 on the other side of the turntable.

[0025] Furthermore, two ends of the inner top surface of the height limiting frame are fixedly connected to two fixing blocks inside the vehicle, the outer wall of the rotating rod is fixedly connected to gear 2, an electric push rod 2 is fixedly passed through the two fixing blocks at relative positions, and the output end of the electric push rod 2 is fixedly connected to rack 2 meshing with gear 2 at the corresponding position.

[0026] Further, both ends of the bottom surface of the height limiting frame are fixedly connected with fixed rods, and the lifting mechanism includes:

[0027] A rectangular sleeve is sleeved on the outside of the fixing rod at a corresponding position;

[0028] Two hydraulic cylinders 2 in the vehicle are fixedly connected to the inner bottom surface of the rectangular sleeve, and the output end of the hydraulic cylinder 2 is fixedly connected to the bottom end of the height limiting frame;

[0029] The mounting plate is fixedly connected to the bottom end of the rectangular sleeve at a corresponding position.

[0030] Furthermore, both ends of the top surface of the height limit frame are fixedly connected with support blocks, a round rod is rotatably connected between the two support blocks, both ends of the outer wall of the round rod are wrapped with steel ropes fixed to the height limit plate, one end of the top surface of the height limit frame is fixedly connected with a reduction motor, and the output end of the reduction motor passes through the support block at the corresponding position and is fixedly connected to the round rod.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. Through the detachable connection between the straightening mechanism and the height limit frame, it is convenient to remove the straightening mechanism from the height limit frame for reuse, which can reduce the production cost of the device and facilitate maintenance by the staff;

[0033] 2. The height limit plate is straightened by the straightening mechanism. There is no need to dismantle the height limit plate for maintenance and then install it again. This can avoid the tedious operations of disassembly, maintenance and installation, save a lot of time and avoid traffic congestion.

[0034] 3. Through the coordinated use of two electric push rods 2 and four electric push rods 1, the plug-in block on the signboard can be automatically replaced, which is convenient for selecting the height limit according to the actual situation. There is no need for manual replacement, which plays a huge role in easing traffic;

[0035] 4. The height limit frame can be moved upward by activating two of the four hydraulic cylinders, thereby increasing the distance between the height limit plate and the ground, making it easier for vehicles transporting large items to pass through. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the height-limiting frame in the present invention;

[0038] Figure 3 It is an enlarged view of point A in the present invention;

[0039] Figure 4 It is a schematic diagram of the plug-in block in the present invention;

[0040] Figure 5 It is an enlarged view of point B in the present invention;

[0041] Figure 6 It is a schematic diagram of the structure of the straightening mechanism in the present invention;

[0042] Figure 7 It is a schematic diagram of a moving frame in the present invention;

[0043] Figure 8 It is a schematic diagram of the structure of the mobile component in the present invention;

[0044] Fig. 9 It is a schematic diagram of the structure of the rotating mechanism in the present invention;

[0045] Fig.10 It is a schematic diagram of the turntable in the present invention;

[0046] Fig.11 It is a structural schematic diagram of the lifting mechanism in the present invention.

[0047] In the figure: 1. height limit frame; 11. limit frame; 111. slide; 112. fixed plate; 113. fixed block; 114. fixed rod; 12. height limit plate; 121. identification plate; 122. round groove one; 123. through hole one; 124. hemispherical groove; 13. plug-in block; 131. spring steel ball; 132. counterweight block; 14. round rod; 15. reduction motor; 16. protective shell; 161. rack one; 17. baffle; 18. electric push rod one; 181. connection block; 182. magnet; 2. straightening mechanism; 21. moving frame; 2 11. Slider; 212. Drive motor 1; 213. Gear 1; 22. Moving assembly; 221. Rectangular frame; 222. Bidirectional screw rod; 223. Moving block; 224. Hydraulic cylinder 1; 225. Connecting frame; 226. Round roller; 227. Pad; 228. Drive motor 2; 3. Rotating mechanism; 31. Turntable; 32. Circular groove 2; 33. Annular groove; 34. Through hole 2; 35. Gear 2; 36. Electric push rod 2; 37. Rack 2; 4. Lifting mechanism; 41. Rectangular sleeve; 42. Hydraulic cylinder 2; 43. Mounting plate. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figure 1-11 In an embodiment of the present invention, a height limiting device for passing a municipal highway includes a height limiting frame 1, a straightening mechanism 2, a rotating mechanism 3, and two lifting mechanisms 4;

[0050] The height limit frame 1 is set on the ground, and the limit frames 11 are fixedly connected between the two opposite side surfaces inside the height limit frame 1. The limit height plates 12 are slidably connected in the two limit frames 11, and the top surface of the height limit plate 12 is fixedly connected with an identification plate 121. The straightening mechanism 2 is set above the height limit frame 1 and is slidably connected to the height limit frame 1. The straightening mechanism 2 includes a moving frame 21 sliding on the top of the height limit frame 1, and the two opposite side surfaces inside the moving frame 21 are fixedly connected with a moving component 22 for straightening the height limit plate 12. The rotating mechanism 3 is set on the inner top surface of the height limit frame 1, which is used to replace the value of the identification plate 121. Two lifting mechanisms 4 are set on both sides of the height limit frame 1 and buried underground to control the lifting and lowering of the height limit frame 1.

[0051] Specifically, when the height limit plate 12 is bent by being hit, the moving frame 21 is installed between the top two sides of the height limit frame 1, and then the height limit plate 12 is moved between the two moving components 22, and the moving frame 21 moves back and forth on the height limit frame 1, and the bent height limit plate 12 can be straightened by the two moving components 22. After the height limit plate 12 is straightened, the moving frame 21 can be removed from the height limit frame 1, and then the height limit plates 12 in other height limit frames 1 can be straightened. The device is detachably connected between the straightening mechanism 2 and the height limit frame 1, which makes it easy to remove the straightening mechanism 2 from the height limit frame 1 for reuse, which can reduce the production cost of the device and is convenient for maintenance by the staff. The device straightens the height limit plate 12 through the straightening mechanism 2, and there is no need to disassemble the height limit plate 12 for maintenance and finally install it, which can avoid the cumbersome operations of disassembly, maintenance and installation, save a lot of time, and avoid traffic congestion.

[0052] Embodiment 1

[0053] like Figure 2 and Figure 7 As shown, in this embodiment, a slide groove 111 is provided on one side of the top of the height limiting frame 1, a protective shell 16 is fixedly connected to the top surface of the height limiting frame 1, a rack 161 is fixedly connected to the top surface of the protective shell 16, and sliders 211 that slide with the slide groove 111 at corresponding positions are fixedly connected to the two opposite side surfaces inside the moving frame 21, and the inner top surface of the moving frame 21 is fixedly connected to a driving motor 212 through a pad, and a gear 213 that meshes with the rack 161 is fixedly connected to the output end of the driving motor 212, and a baffle 17 is hinged at the bottom end of a side surface of the top of the height limiting frame 1, and two symmetrical threaded holes are provided on the side surface of the corresponding baffle 17 of the height limiting frame 1, and two symmetrical bolts that screw with the threaded holes at corresponding positions are penetrated through one side surface of the baffle 17.

[0054] In this embodiment, first, the two bolts are taken out from the two threaded holes respectively, and then the baffle 17 is rotated to expose one end of the slide groove 111, and then the two sliders 211 are inserted into the slide groove 111 at the corresponding position, and the gear 1 213 is meshed with the rack 161, so that the movable frame 21 can slide on the height limit frame 1, and then the baffle 17 is fixed to the end of the height limit frame 1 by two bolts, and the movable frame 21 is driven by the driving motor 1 212 to slide on the height limit frame 1. The sliding of the movable frame 21 can drive the two movable components 22 to move, and the bent height limit plate 12 is clamped by the two movable components 22, and then the bent height limit plate 12 is straightened by the two movable components 22.

[0055] Embodiment 2

[0056] like Figure 8As shown, in the present embodiment, the moving component 22 includes a rectangular frame 221 fixedly connected to the inner side surface of the moving frame 21, a bidirectional screw rod 222 rotatably connected between the two short side surfaces inside the rectangular frame 221 at the corresponding position, two symmetrical moving blocks 223 pass through the two ends of the outer wall of the bidirectional screw rod 222 screwed at the corresponding position, two symmetrical hydraulic cylinders 224 pass through one side surface of the moving block 223 fixed at the corresponding position, the output end of the hydraulic cylinder 224 is fixedly connected to a connecting frame 225, the interior of the connecting frame 225 is rotatably connected to a round roller 226, a pad 227 is fixedly connected to the side surface of the rectangular frame 221 at the corresponding position, a driving motor 228 is fixedly connected to the top surface of the pad 227 at the corresponding position, and the output end of the driving motor 228 passes through the side surface of the rectangular frame 221 and is fixedly connected to the bidirectional screw rod 222 at the corresponding position.

[0057] In this embodiment, the four round rollers 226 are driven by the four hydraulic cylinders 224 to make them in close contact with the height limiting plate 12, and then the bidirectional screw rod 222 at the corresponding position is driven by the driving motor 228. The rotating bidirectional screw rod 222 can make the two moving blocks 223 at the corresponding position approach each other, thereby driving the two round rollers 226 at the corresponding position to approach each other. At the same time, under the drive of the driving motor 212, the four round rollers 226 can straighten the bent height limiting plate 12.

[0058] Embodiment 3

[0059] like Figure 3-5 , Fig. 9 and Fig.10As shown, in the present embodiment, a circular groove 122 is provided on the front of the identification plate 121, a through hole 123 is provided on the back of the identification plate 121 corresponding to the circular groove 122, a plurality of hemispherical grooves 124 are provided in an annular manner at equal angles on the inner wall of the circular groove 122, a plug-in block 13 is clamped inside the circular groove 122, a plurality of cylindrical grooves are provided in an annular manner at equal angles on the outer wall of the plug-in block 13, a spring steel ball 131 clamped with the hemispherical groove 124 at the corresponding position is fixedly connected inside the cylindrical groove, the plug-in block 13 is made of metal iron, both sides of the inner top surface of the height limiting frame 1 are fixedly connected with fixing plates 112, both ends of the opposite side surfaces of the two fixing plates 112 are fixedly connected with an electric push rod 18, the output end of the electric push rod 18 is fixedly connected with a connecting block 181, a magnet 182 is embedded and fixed on one side of the connecting block 181, a chamber is provided inside the plug-in block 13, and the inside of the chamber A counterweight block 132 is vertically fixedly connected, and a camera is fixedly connected to the side of one of the fixed plates 112. The rotating mechanism 3 includes two symmetrical rotating rods rotatably connected between the two fixed plates 112. A turntable 31 is fixedly connected to the outer wall of the rotating rod at the corresponding position. A plurality of circular grooves 32 are formed in an annular manner at equal angles on one side of the turntable 31. An annular groove 33 is formed on the inner wall of the circular groove 32 to be engaged with a plurality of spring steel balls 131 at the corresponding positions. A through hole 34 is formed on the other side of the turntable 31 corresponding to the circular groove 32. Two fixing blocks 113 for the inside of the vehicle are fixedly connected at both ends of the inner top surface of the height limiting frame 1. A gear 35 is fixedly connected to the outer wall of the rotating rod. An electric push rod 36 is fixedly connected between the two fixed blocks 113 at relative positions. The output end of the electric push rod 36 is fixedly connected to a rack 37 meshing with the gear 35 at the corresponding position.

[0060] In this embodiment, first, a plurality of plug-in blocks 13 marked with numbers are inserted into the circular grooves 32 at corresponding positions in order. When a plug-in block 13 matching the one on the identification plate 121 is required, the two turntables 31 can be rotated by starting the two electric push rods 36. Then, the numbers on the plug-in blocks 13 aligned with the circular grooves 122 are observed by the camera (the working principle of the camera is a commonly used method in the prior art, so it will not be described in detail here). When the number corresponding to the circular groove 122 is the required number, the electric push rod 1 near the turntable 31 is started. 18, the connecting block 181 can drive the magnet 182 at the corresponding position to pass through the second through hole 34 at the corresponding position. When the magnet 182 contacts the plug-in block 13 at the corresponding position, the magnet 182 can attract the plug-in block 13, and under the action of the electric push rod 18 at the corresponding position, the plug-in block 13 at the corresponding position can be pushed out from the circular groove 32 at the corresponding position. Since the plug-in block 13 is attracted by the magnet 182, the plug-in block 13 will not fall when it is separated from the circular groove 32 until the electric push rod 18 moves the plug-in block 13 to the corresponding position. The spring steel ball 131 on the outer wall of the plug-in block 13 is engaged with the hemispherical groove 124 at the corresponding position. When the number on the identification plate 121 needs to be replaced, the plug-in block 13 in the circular groove 122 is moved to the circular groove 2 32 at the corresponding position by starting the electric push rod 18 far away from the turntable 31, and then the turntable 31 is rotated by starting one or two electric push rods 2 36 until the required number is aligned with the circular groove 122 at the corresponding position, and then the electric push rod 18 near the turntable 31 is started to move the plug-in block 13 in the circular groove 122 to the circular groove 2 32 at the corresponding position. The plug-in block 13 is moved to the circular groove 122 at the corresponding position. In order to prevent the numbers on the plug-in block 13 from tilting, when the multiple spring steel balls 131 on the plug-in block 13 are inserted into the annular groove 33 at the corresponding position, the plug-in block 13 can prevent the numbers from tilting under the action of the counterweight block 132. The device can automatically replace the plug-in block 13 on the sign 121 through the coordinated use of two electric push rods 2 36 and four electric push rods 1 18, which is convenient for selecting the height limit according to actual conditions, and does not require manual replacement, which plays a huge role in easing traffic.

[0061] Embodiment 4

[0062] like Fig.11 As shown, in this embodiment, both ends of the bottom surface of the height limit frame 1 are fixedly connected with fixed rods 114, and the lifting mechanism 4 includes a rectangular sleeve 41 that is sleeved on the outside of the fixed rod 114 at the corresponding position, two hydraulic cylinders 42 in the vehicle are fixedly connected to the inner bottom surface of the rectangular sleeve 41, the output end of the hydraulic cylinder 42 is fixedly connected to the bottom end of the height limit frame 1, and the mounting plate 43 is fixedly connected to the bottom end of the rectangular sleeve 41 at the corresponding position.

[0063] In this embodiment, by burying the rectangular sleeve 41 underground and fixing the mounting plate 43 on the underground anchor bolts, when a vehicle transporting large items needs to pass, the height limit frame 1 can be moved up by driving four hydraulic cylinders 42 to facilitate the passage of vehicles transporting large items.

[0064] Embodiment 5

[0065] like Figure 2 As shown, in this embodiment, support blocks are fixedly connected to both ends of the top surface of the height limit frame 1, a round rod 14 is rotatably connected between the two support blocks, and steel ropes fixed to the height limit plate 12 are wound and fixed at both ends of the outer wall of the round rod 14. A reduction motor 15 is fixedly connected to one end of the top surface of the height limit frame 1, and the output end of the reduction motor 15 passes through the support block at the corresponding position and is fixedly connected to the round rod 14.

[0066] In this embodiment, the round rod 14 can be driven by the reduction motor 15 to reel in the two steel ropes, so as to adjust the specific height of the height limiting plate 12.

[0067] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0068] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A height-limiting device for municipal highways, characterized in that: include: A height limiting frame (1) is arranged on the ground, and two opposite side surfaces inside the height limiting frame (1) are fixedly connected to limit frames (11), and the two limit frames (11) are slidably connected to limit height plates (12), and the top surface of the height limiting plate (12) is fixedly connected to a signboard (121); A straightening mechanism (2) is arranged above the height limiting frame (1) and is slidably connected to the height limiting frame (1). The straightening mechanism (2) comprises a moving frame (21) which is located on the top of the height limiting frame (1) and slides thereon. Two opposite side surfaces inside the moving frame (21) are fixedly connected with moving components (22) for straightening the height limiting plate (12). A rotating mechanism (3) is arranged on the inner top surface of the height limiting frame (1) and is used to replace the value of the identification plate (121); Two lifting mechanisms (4) are arranged on both sides of the height limiting frame (1) and buried underground, and are used to control the lifting and lowering of the height limiting frame (1).

2. The height limiting device for municipal highways according to claim 1, characterized in that: A slide groove (111) is provided on one side of the top of the height limiting frame (1); a protective shell (16) is fixedly connected to the top surface of the height limiting frame (1); a rack (161) is fixedly connected to the top surface of the protective shell (16); two opposite side surfaces inside the moving frame (21) are fixedly connected to sliders (211) that slide with the slide groove (111) at corresponding positions; the inner top surface of the moving frame (21) is fixedly connected to a driving motor (212) via a pad; and a gear (213) that meshes with the rack (161) is fixedly connected to the output end of the driving motor (212).

3. The height limiting device for municipal highways according to claim 2, characterized in that: A baffle (17) is hingedly connected to the bottom end of one side of the top of the height limiting frame (1), and two symmetrical threaded holes are provided on the side of the corresponding baffle (17) of the height limiting frame (1), and two symmetrical bolts are passed through one side of the baffle (17) and are screwed into the threaded holes at corresponding positions.

4. The height limiting device for municipal highways according to claim 1, characterized in that: The moving assembly (22) comprises: A rectangular frame (221) is fixedly connected to the inner side surface of the moving frame (21); A bidirectional screw rod (222) is rotatably connected between two short side surfaces inside the rectangular frame (221) at corresponding positions; Two symmetrical moving blocks (223) penetrate through two ends of the outer wall of the bidirectional screw rod (222) screwed together at corresponding positions; Two symmetrical hydraulic cylinders (224) penetrate one side of a moving block (223) fixed at a corresponding position, the output end of the hydraulic cylinder (224) is fixedly connected to a connecting frame (225), and the interior of the connecting frame (225) is rotatably connected to a round roller (226); A backing plate (227) fixedly connected to the side surface of the rectangular frame (221) at a corresponding position; The second driving motor (228) is fixedly connected to the top surface of the pad (227) at the corresponding position, and the output end of the second driving motor (228) passes through the side surface of the rectangular frame (221) and is fixedly connected to the bidirectional screw rod (222) at the corresponding position.

5. The height limiting device for municipal highways according to claim 1, characterized in that: A circular groove (122) is provided on the front of the identification plate (121); a through hole (123) is provided on the back of the identification plate (121) at a position corresponding to the circular groove (122); a plurality of hemispherical grooves (124) are provided at equal angles in an annular manner on the inner wall of the circular groove (122); a plug-in block (13) is clamped inside the circular groove (122); a plurality of cylindrical grooves are provided at equal angles in an annular manner on the outer wall of the plug-in block (13); a spring steel ball (131) clamped with the hemispherical groove (124) at a corresponding position is fixedly connected inside the cylindrical groove.

6. The height limiting device for municipal highways according to claim 5, characterized in that: The plug-in block (13) is made of metal iron. Both sides of the inner top surface of the height limiting frame (1) are fixedly connected with fixing plates (112). Both ends of the opposite side surfaces of the two fixing plates (112) are fixedly connected with electric push rods (18). The output end of the electric push rod (18) is fixedly connected with a connecting block (181). A magnet (182) is embedded and fixedly disposed on one side of the connecting block (181).

7. The height limiting device for municipal highways according to claim 6, characterized in that: A chamber is provided inside the plug-in block (13), a counterweight block (132) is vertically fixedly connected inside the chamber, a camera is fixedly connected to the side of one of the fixed plates (112), and the rotating mechanism (3) comprises: Two symmetrical rotating rods are rotatably connected between two fixed plates (112); The rotating disk (31) is fixedly connected to the outer wall of the rotating rod at the corresponding position. A plurality of circular grooves (32) are formed in an annular manner at equal angles on one side surface of the rotating disk (31). An annular groove (33) for engaging with a plurality of spring steel balls (131) at the corresponding position is formed on the inner wall of the circular groove (32). A through hole (34) is formed in the other side surface of the rotating disk (31) at the corresponding position of the circular groove (32).

8. The height limiting device for municipal highways according to claim 7, characterized in that: Two fixing blocks (113) facing the inside of the vehicle are fixedly connected at both ends of the inner top surface of the height limiting frame (1), a second gear (35) is fixedly connected to the outer wall of the rotating rod, a second electric push rod (36) is fixedly passed through between the two fixing blocks (113) at opposite positions, and a second rack (37) meshing with the second gear (35) at the corresponding position is fixedly connected to the output end of the second electric push rod (36).

9. The height limiting device for municipal highways according to claim 1, characterized in that: Both ends of the bottom surface of the height limiting frame (1) are fixedly connected with fixed rods (114), and the lifting mechanism (4) comprises: A rectangular sleeve (41) sleeved on the outside of the fixing rod (114) at a corresponding position; Two hydraulic cylinders (42) in the vehicle are fixedly connected to the inner bottom surface of the rectangular sleeve (41), and the output end of the hydraulic cylinder (42) is fixedly connected to the bottom end of the height limiting frame (1); The mounting plate (43) is fixedly connected to the bottom end of the rectangular sleeve (41) at a corresponding position.

10. The height limiting device for municipal highways according to claim 1, characterized in that: Both ends of the top surface of the height limiting frame (1) are fixedly connected to support blocks, a round rod (14) is rotatably connected between the two support blocks, both ends of the outer wall of the round rod (14) are wrapped and fixed with steel ropes fixed to the height limiting plate (12), one end of the top surface of the height limiting frame (1) is fixedly connected to a reduction motor (15), and the output end of the reduction motor (15) passes through the support blocks at corresponding positions and is fixedly connected to the round rod (14).

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