Reconstruction area movable road surface speed limiting device

Abstract

The utility model provides a movable road surface speed limiting device in a reconstruction area, and relates to the technical field of vehicle management in the reconstruction area, an upper shell is installed above a bottom plate, multiple sets of speed limiting adjusting mechanisms are arranged and distributed between the bottom plate and the upper shell in an array mode, and arc-shaped protruding pieces penetrate through corresponding through grooves in the upper shell. The speed limiting adjusting mechanism adjusts the height of the arc-shaped protruding piece penetrating through the upper shell through the driving assembly. Through the arrangement of the speed-limiting adjusting mechanisms, the driving hydraulic devices are shortened, the speed-limiting adjusting mechanism connecting pieces drive the two ends of all the rollers connected to the multiple sets of speed-limiting adjusting mechanism chains to roll in the direction close to the hinge points of the arc-shaped protruding pieces, the heights of the arc-shaped protruding pieces extending out of the through grooves of the upper shell are increased, and the effect of increasing the speed-reducing strength is achieved; the hydraulic press is driven to extend, the speed limiting adjusting mechanism connecting piece drives the two ends of all the rollers connected to the multiple sets of speed limiting adjusting mechanism chains to roll in the direction away from the hinge point of the arc-shaped protruding piece, the height of the arc-shaped protruding piece extending out of the through groove of the upper shell is reduced, and the effect of reducing the speed reducing strength is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of vehicle management in the reconstruction area, concretely is a kind of movable road surface speed limiting device in reconstruction area. BACKGROUND

[0002] The reconstruction area refers to the area being reconstructed, expanded or developed, and it is necessary to set the limit of the speed of motor vehicles in the area to protect traffic safety, construction personnel safety and the safety of the surrounding environment. This speed limiting measure is implemented during the construction, road reconstruction or urban construction in the area, and the purpose is to reduce the risk of traffic accidents and ensure that the construction process is not disturbed.

[0003] The existing movable road surface speed limiting device in reconstruction area cannot meet the specific speed limiting requirements of the speed limiting device at the corresponding position according to the vehicle speed, traffic flow or construction position in the reconstruction area. If the speed of the vehicle is too fast and the speed limiting is not timely, it may increase the frequency of accidents. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of movable road surface speed limiting device in reconstruction area to solve the above problems in the above-mentioned background art that the existing movable road surface speed limiting device in reconstruction area cannot meet the specific speed limiting requirements of the speed limiting device at the corresponding position according to the vehicle speed, traffic flow or construction position in the reconstruction area. If the speed of the vehicle is too fast and the speed limiting is not timely, it may increase the frequency of accidents.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of movable road surface speed limiting device in reconstruction area, including bottom plate, upper shell and speed limiting adjusting mechanism, the upper shell is installed above bottom plate, the speed limiting adjusting mechanism is set up multiple and is arrayed distribution multiple between bottom plate and upper shell, the speed limiting adjusting mechanism includes arc convex piece, the arc convex piece is penetrated in the corresponding through slot in upper shell, the speed limiting adjusting mechanism adjusts the height of arc convex piece passing through upper shell by driving assembly.

[0006] Preferably, the speed limiting adjusting mechanism further includes a fixed seat and a roller, the fixed seat is installed above the bottom plate, the arc convex piece is hingedly connected to the lug at one end of the fixed seat, and the roller is located above the arc convex piece below the lower concave surface of the fixed seat.

[0007] Preferably, the upper surface of the arc convex piece is arc-shaped, and the lower surface is provided with a slanting notch, and the distance between the slanting notch of the arc convex piece and the lower concave surface of the fixed seat gradually decreases in the direction close to the lug.

[0008] Preferably, the multiple groups of speed limiting adjusting mechanisms are equidistantly distributed in the length direction of the bottom plate to form a chain of speed limiting adjusting mechanisms, and the speed limiting adjusting mechanism further comprises a first connecting rod, and the cylinders of two adjacent groups of speed limiting adjusting mechanisms are fixedly connected through the first connecting rod.

[0009] Preferably, the driving assembly comprises a speed limiting adjusting mechanism connecting piece, and one group of the driving assembly is arranged at each end of the bottom plate to form multiple groups of the chain of speed limiting adjusting mechanisms arranged in the short direction of the bottom plate, and the speed limiting adjusting mechanisms at the ends of the multiple groups of the chain of speed limiting adjusting mechanisms are connected to the speed limiting adjusting mechanism connecting piece, and the speed limiting adjusting mechanism connecting piece is slidably connected to the bottom plate.

[0010] Preferably, the speed limiting adjusting mechanism connecting piece comprises a second connecting rod, a rotating connecting piece and a fixing frame, the cylinder of the speed limiting adjusting mechanism at the end of the chain of speed limiting adjusting mechanisms is connected to the rotating connecting piece through the second connecting rod, and the rotating connecting pieces of the speed limiting adjusting mechanisms at the ends of the adjacent chains of speed limiting adjusting mechanisms on the same side are fixedly connected through the fixing frame.

[0011] Preferably, the driving assembly further comprises a support, a hydraulic device and a vertical piece, the support is fixedly connected to the speed limiting adjusting mechanism connecting piece, the vertical piece is fixedly connected to the bottom plate, the body of the hydraulic device is fixed to the vertical piece, and the output end of the hydraulic device is fixedly connected to the support.

[0012] Preferably, the upper shell is equidistantly distributed in the length direction of the bottom plate, and the upper shells are attached to each other, and each group of speed limiting adjusting mechanisms corresponds to each through slot of the upper shell, and the flapper is arranged around the through slot.

[0013] Preferably, a mobile bottom wheel is arranged at the edge of each end of the bottom plate, and the mobile bottom wheel comprises a roller seat and a roller, the roller seat is hingedly connected to the inner side of the first notch of the bottom plate, and the roller is connected below the roller seat.

[0014] Preferably, the utility model further comprises a side shell, the side shell is provided with a second notch corresponding to the position of the first notch of the bottom plate, the mobile bottom wheel further comprises a limiting piece, one end of the limiting piece is hingedly connected to the surface of the side shell on one side of the second notch, and the other end of the limiting piece is screw-connected to the surface of the side shell on the other side of the second notch.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] This invention utilizes a speed-limiting adjustment mechanism. When the speed limit is to be increased, the driving hydraulic unit shortens, causing the connecting parts of the speed-limiting adjustment mechanism to drive the two ends of all the rollers connected to the multiple sets of speed-limiting adjustment mechanism chains to roll towards the hinge point of the arc-shaped protrusions. Each set of arc-shaped protrusions corresponding to the rollers supports upwards, increasing the height of the arc-shaped protrusions extending out of the slots of the upper shell, thus increasing the obstruction when vehicles pass by and achieving the effect of increasing deceleration intensity. When the speed limit is to be decreased, the driving hydraulic unit extends, causing the connecting parts of the speed-limiting adjustment mechanism to drive the two ends of all the rollers connected to the multiple sets of speed-limiting adjustment mechanism chains to roll away from the hinge point of the arc-shaped protrusions. The upward support of each set of arc-shaped protrusions corresponding to the rollers decreases, reducing the height of the arc-shaped protrusions extending out of the slots of the upper shell, thus reducing the obstruction when vehicles pass by and achieving the effect of decreasing deceleration intensity. The device can adjust its speed limit based on the vehicle speed and traffic flow in the reconstruction area, thereby allowing for targeted speed limit adjustments at different locations to ensure safety in the reconstruction area, depending on factors such as vehicle speed, traffic flow, or construction location. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the speed limiting device of this utility model.

[0018] Figure 2 This is a side view of the base plate and upper shell of this utility model.

[0019] Figure 3 This is a schematic diagram of the upper shell structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the base plate and upper shell of this utility model.

[0021] Figure 5 This is a schematic diagram of the speed limiting adjustment mechanism of this utility model.

[0022] Figure 6 This is a schematic diagram of the connection structure of the speed limiting adjustment mechanism of this utility model.

[0023] Figure 7 This is a schematic diagram showing the distribution of the drive components of this utility model.

[0024] Figure 8 This is a schematic diagram of the drive component structure of this utility model.

[0025] Figure 9 This is a schematic diagram of the connecting component of the speed limiting adjustment mechanism of this utility model.

[0026] Figure 10 This is a schematic diagram of the fixed-state movable bottom wheel structure of this utility model.

[0027] Figure 11 This is a schematic diagram of the movable bottom wheel structure of this utility model in its movable state.

[0028] In the diagram: 1. Base plate; 11. Support component; 12. Protruding edge; 13. First notch; 2. Upper shell; 21. Through groove; 211. Baffle plate; 22. Groove; 3. Speed ​​limiting adjustment mechanism; 31. Fixed seat; 311. Protrusion; 312. Concave surface; 32. Arc-shaped protrusion; 33. Roller; 34. First connecting rod; 4. Side shell; 41. Second notch; 5. Drive assembly; 51. Speed ​​limiting adjustment mechanism connector; 511. Second connecting rod; 512. Rotating connector; 513. Fixed frame; 52. Bracket; 53. Hydraulic unit; 54. Stand; 6. Moving base wheel; 61. Roller seat; 62. Roller; 63. Limiting plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] One embodiment provided by this utility model: as follows Figure 1 As shown, a movable road speed limiting device for a reconstruction area includes a base plate 1, an upper shell 2, a speed limiting adjustment mechanism 3, a side shell 4, a drive assembly 5, and movable wheels 6.

[0031] like Figure 2 , Figure 3 and Figure 4As shown, the upper shell 2 is mounted above the base plate 1. Multiple sets of upper shells 2 are evenly distributed along the longitudinal direction of the base plate 1, with each set of upper shells 2 touching each other. The grooves 22 on the edges of the upper shells 2 mate with the dimensional positions of the protruding edges 12 of the base plate 1. The two ends of the upper shells 2 are aligned and mounted on the base plate 1, forming a hollow structure between the upper shells 2 and the base plate 1. Multiple sets of speed limiting adjustment mechanisms 3 are arranged in an array between the base plate 1 and the upper shells 2. The speed limiting adjustment mechanisms 3 are located in the hollow structure, and each set of speed limiting adjustment mechanisms 3 corresponds to each through slot 21 of the upper shell 2. Multiple sets of speed limiting adjustment mechanisms 3 are evenly distributed along the longitudinal direction of the base plate 1 to form a chain of speed limiting adjustment mechanisms 3, and the formed chain of speed limiting adjustment mechanisms 3 is arranged in multiple sets along the short direction of the base plate 1. All the arranged speed limiting adjustment mechanisms 3 serve as a structure for decelerating road vehicles. Inside the upper shell 2 and the base plate 1, a support member 11 is installed between two adjacent sets of speed limiting adjustment mechanism chains on the base plate 1 along the longitudinal direction of the base plate 1. After the upper shell 2 and the base plate 1 are installed, the top of the support member 11 abuts against the lower surface of the upper shell 2. The support member 11, located between the multiple sets of speed limiting adjustment mechanism chains inside, can increase the stability between the base plate 1 and the upper shell 2, and improve the robustness of the device when a vehicle runs over it.

[0032] like Figure 5 and Figure 6 As shown, the speed limiting adjustment mechanism 3 includes a fixed base 31, an arc-shaped protrusion 32, a roller 33, and a first connecting rod 34.

[0033] A fixed base 31 is mounted above the base plate 1. An arc-shaped protrusion 32 is hinged to a protrusion 311 at one end of the fixed base 31, and the arc-shaped protrusion 32 passes through the corresponding through groove 21 in the upper shell 2. A roller 33 is located above the concave surface 312 of the fixed base 31 and below the arc-shaped protrusion 32. The concave surface 312 matches the width of the roller 33, and the roller 33 rotates on the concave surface 312. The upper part of the roller 33 contacts the arc-shaped protrusion 32, and the concave surface 312 restricts the movement space of the roller 33. The upper surface of the arc-shaped protrusion 32 is arc-shaped, and the lower surface is provided with a slanted notch. The distance between the slanted notch of the arc-shaped protrusion 32 and the concave surface 312 of the fixed base 31 gradually decreases in the direction close to the protrusion 311. In each speed limiting adjustment mechanism 3, the roller 33 is at different positions on the concave surface 312. Under the support of the arc-shaped protrusion 32 with the oblique notch, the arc-shaped protrusion 32 displays different angles. When the roller 33 rolls on the concave surface 312 from away from the protrusion 311 to close to the protrusion 311, the angle between the arc-shaped protrusion 32 and the concave surface 312 continuously increases, the top of the arc-shaped protrusion 32 gradually increases, and the distance beyond the upper surface of the upper shell 2 also increases.

[0034] In the three chains of the speed limiting adjustment mechanism, adjacent sets of speed limiting adjustment mechanisms 3 are fixedly connected by a first connecting rod 34 to the rollers 33 of the two sets of speed limiting adjustment mechanisms 3. The rollers 33 on the same three chains of the speed limiting adjustment mechanism are interconnected and can move simultaneously, and can simultaneously adjust the angle of all the arc-shaped protrusions 32 on the same three chains of the speed limiting adjustment mechanism.

[0035] like Figure 7 , Figure 8 and Figure 9 As shown, the speed limiting adjustment mechanism 3 adjusts the height of the arc-shaped protrusion 32 passing through the upper shell 2 via the drive assembly 5. The drive assembly 5 includes a speed limiting adjustment mechanism connector 51, a bracket 52, a hydraulic actuator 53, and a stand 54.

[0036] One drive assembly 5 is installed at each end of the base plate 1. A side shell 4 is installed above the drive assembly 5. The side shell 4 is adjacent to and closely attached to the outermost edge of the upper shell 2. The speed limiting adjustment mechanisms 3 located at the same end of the chains of multiple speed limiting adjustment mechanisms 3 are all connected to the speed limiting adjustment mechanism connector 51. The speed limiting adjustment mechanism connector 51 is slidably connected to the base plate 1. The speed limiting adjustment mechanism connector 51 includes a second connecting rod 511, a rotating connector 512, and a fixing frame 513. The rotating connector 512 is provided with inner and outer rings that rotate relative to each other. The rollers 33 of the speed limiting adjustment mechanisms 3 at the end of the chains of the speed limiting adjustment mechanisms 3 are inserted into and connected to the inner ring of the rotating connector 512 through the second connecting rod 511. The outer rings of the rotating connector 512 connected to the speed limiting adjustment mechanisms 3 at the ends of adjacent chains of the speed limiting adjustment mechanisms 3 on the same side are fixedly connected by the fixing frame 513. The fixing bracket 513 on the speed limiting adjustment mechanism connector 51 is fixedly connected to the bracket 52, the upright 54 is fixedly connected to the base plate 1, the body of the hydraulic device 53 is fixed on the upright 54, and the output end of the hydraulic device 53 is fixedly connected to the bracket 52.

[0037] Since the three chains of multiple speed limiting adjustment mechanisms are fixed together on the bracket 52, during adjustment, the hydraulic units 53 of the two sets of drive components 5 will drive both ends of the three chains of multiple speed limiting adjustment mechanisms simultaneously. In the driving state, each bracket 52 drives each rotating connector 512 to move. Due to the connection method between the second connecting rod 511 and the rotating connector 512, the second connecting rod 511 will rotate and move in the same direction as the rotating connector 512. Each set of second connecting rods 511 at both ends simultaneously drives the rollers 33 on the corresponding three chains of the same speed limiting adjustment mechanism to rotate and move, thereby achieving unified angle adjustment of the arc-shaped protrusions 32 of all speed limiting adjustment mechanisms 3.

[0038] Installing this device on the road surface in the reconstruction area allows for adjustment of the speed limit. When the speed limit is to be increased, the drive hydraulic unit 53 shortens, causing the connecting piece 51 of the speed limit adjustment mechanism to drive the two ends of all the rollers 33 connected to the three chains of the multiple speed limit adjustment mechanisms to roll towards the hinge point of the arc-shaped protrusion 32. Each set of arc-shaped protrusions 32 corresponding to the rollers 33 supports upward, increasing the height of the arc-shaped protrusions 32 extending out of the through groove 21 of the upper shell 2, thus increasing the obstruction when vehicles pass by and achieving the effect of increasing the deceleration intensity. When the speed limit is to be decreased, the drive hydraulic unit 53 extends, causing the connecting piece 51 of the speed limit adjustment mechanism to drive the two ends of all the rollers 33 connected to the three chains of the multiple speed limit adjustment mechanisms to roll away from the hinge point of the arc-shaped protrusion 32. The upward support of each set of arc-shaped protrusions 32 corresponding to the rollers 33 decreases, and the height of the arc-shaped protrusions 32 extending out of the through groove 21 of the upper shell 2 decreases, reducing the obstruction when vehicles pass by and achieving the effect of reducing the deceleration intensity. The device can adjust its speed limit based on the vehicle speed and traffic flow in the reconstruction area, thereby allowing for targeted speed limit adjustments at different locations to ensure safety in the reconstruction area, depending on factors such as vehicle speed, traffic flow, or construction location.

[0039] The two sets of drive components 5 at both ends of the speed limiting adjustment mechanism 3 improve the balance of the rollers 33 on the same chain of the speed limiting adjustment mechanism 3 during the movement process and provide sufficient driving force. Moreover, after the hydraulic device 53 stabilizes, it improves the positioning of the rollers 33, thereby increasing the stability of the arc-shaped protrusion 32 support and making it less susceptible to the influence of vehicle gravity, which reduces the support height of the arc-shaped protrusion 32 when the vehicle passes by.

[0040] A baffle 211, made of flexible material, is arranged around the through groove 21. When the arc-shaped protrusion 32 extends or retracts at the position of the through groove 21, the baffle 211 can effectively reduce the chance of granular stones entering the upper shell 2 and the bottom plate 1, thus avoiding affecting the adjustment and operation of the speed limiting mechanism 3.

[0041] like Figure 10 and Figure 11As shown, movable base wheels 6 are installed at both ends of the base plate 1. Each movable base wheel 6 includes a roller seat 61 and a roller 62. The roller seat 61 is hinged to the inside of the first notch 13 of the base plate 1, and the roller 62 is connected below the roller seat 61. A second notch 41 is provided on the side shell 4 corresponding to the first notch 13 of the base plate 1. The movable base wheel 6 also includes a limiting piece 63. One end of the limiting piece 63 is hinged to the surface of the side shell 4 on one side of the second notch 41, and the other end is screwed to the surface of the side shell 4 on the other side of the second notch 41. When the roller 62 rotates to a state parallel to the ground, the roller seat 61 is located inside the second notch 41, and the upper surface of the roller 62 corresponds to the lower surface of the limiting piece 63. The outer side of the roller seat 61 is on the same plane as the side shell 4. When the roller 62 rotates to a state perpendicular to the ground, the upper surface of the roller seat 61 corresponds to the lower surface of the limiting piece 63. When the device needs to be moved, the roller seat 61 can be rotated so that the roller 62 rotates to a position perpendicular to the ground. The limiting piece 63 is then rotated above the roller seat 61 to a position close to the surface of the side shell 4, and its movable end is fixed with screws. With the action of multiple sets of rollers 62, the device can be moved, saving manpower to move the device and improving work efficiency. After determining the new installation position, the limiting piece 63 is opened, and the roller seat 61 is rotated into the second notch 41, so that the roller 62 is in a state parallel to the ground. The movable end of the limiting piece 63 is fixed with screws again to limit the position of the roller 62 and ensure that the bottom of the base plate 1 can be close to the ground.

[0042] The above are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A movable road surface speed limiting device for a reconstruction area, characterized in that: The device includes a base plate (1), an upper shell (2), and a speed limiting adjustment mechanism (3). The upper shell (2) is mounted above the base plate (1). The speed limiting adjustment mechanism (3) is provided in multiple sets and is arranged in an array between the base plate (1) and the upper shell (2). The speed limiting adjustment mechanism (3) includes an arc-shaped protrusion (32). The arc-shaped protrusion (32) passes through the corresponding through groove (21) of the upper shell (2). The speed limiting adjustment mechanism (3) adjusts the height of the arc-shaped protrusion (32) passing through the upper shell (2) through the drive assembly (5).

2. The movable road speed limiting device for a reconstruction area according to claim 1, characterized in that: The speed limiting adjustment mechanism (3) also includes a fixed seat (31) and a roller (33). The fixed seat (31) is installed above the base plate (1). The arc-shaped protrusion (32) is hinged to the protrusion (311) at one end of the fixed seat (31). The roller (33) is located above the concave surface (312) of the fixed seat (31) and below the arc-shaped protrusion (32).

3. A movable road speed limiting device for a reconstruction area according to claim 2, characterized in that: The upper surface of the arc-shaped protrusion (32) is arc-shaped, and the lower surface is provided with an oblique notch. The distance between the oblique notch of the arc-shaped protrusion (32) and the concave surface (312) of the fixing seat (31) gradually decreases in the direction close to the protrusion (311).

4. A movable road speed limiter for a reconstruction area according to claim 3, characterized in that: Multiple speed limiting adjustment mechanisms (3) are distributed at equal intervals along the longitudinal direction of the base plate (1) to form a chain of speed limiting adjustment mechanisms (3). The speed limiting adjustment mechanism (3) also includes a first connecting rod (34). The rollers (33) of the two adjacent speed limiting adjustment mechanisms (3) are fixedly connected by the first connecting rod (34).

5. A movable road speed limiting device for a reconstruction area according to claim 4, characterized in that: The drive assembly (5) includes a speed limiting adjustment mechanism connector (51). The drive assembly (5) has one set installed at each end of the base plate (1). The speed limiting adjustment mechanism (3) chain is arranged in multiple sets in the short direction of the base plate (1). The speed limiting adjustment mechanism (3) located at the same end of the multiple sets of speed limiting adjustment mechanism (3) chains are all connected to the speed limiting adjustment mechanism connector (51). The speed limiting adjustment mechanism connector (51) is slidably connected to the base plate (1).

6. A movable road speed limiting device for a reconstruction area according to claim 5, characterized in that: The speed limiting adjustment mechanism connector (51) includes a second connecting rod (511), a rotating connector (512), and a fixing frame (513). The roller (33) of the speed limiting adjustment mechanism (3) at the end of the chain of the speed limiting adjustment mechanism (3) is connected to the rotating connector (512) by the second connecting rod (511). The rotating connectors (512) connected to the speed limiting adjustment mechanisms (3) at the end of the chain of adjacent speed limiting adjustment mechanisms (3) on the same side are fixedly connected by the fixing frame (513).

7. A movable road surface speed limiting device for a reconstruction area according to claim 5, characterized in that: The drive assembly (5) also includes a bracket (52), a hydraulic actuator (53), and a stand (54). The bracket (52) is fixedly connected to the speed limiting adjustment mechanism connector (51). The stand (54) is fixedly connected to the base plate (1). The body of the hydraulic actuator (53) is fixedly connected to the stand (54). The output end of the hydraulic actuator (53) is fixedly connected to the bracket (52).

8. A movable road speed limiting device for a reconstruction area according to claim 1, characterized in that: The upper shell (2) is distributed in multiple groups at equal intervals along the longitudinal direction of the base plate (1). Each group of upper shells (2) is attached to each other. Each group of speed limiting adjustment mechanism (3) corresponds to each through slot (21) of the upper shell (2). Baffles (211) are arranged around the through slot (21).

9. A movable road speed limiting device for a reconstruction area according to claim 5, characterized in that: Movable wheels (6) are installed at both ends of the base plate (1). The movable wheels (6) include roller seats (61) and rollers (62). The roller seats (61) are hinged to the inside of the first notch (13) of the base plate (1), and the rollers (62) are connected below the roller seats (61).

10. A movable road surface speed limiting device for a reconstruction area according to claim 9, characterized in that: It also includes a side shell (4), which has a second notch (41) corresponding to the first notch (13) of the base plate (1). The movable bottom wheel (6) also includes a limiting piece (63), one end of which is hinged to the surface of the side shell (4) on one side of the second notch (41), and the other end of which is screwed to the surface of the side shell (4) on the other side of the second notch (41).

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