Intelligent sinking speed bump

Abstract

The utility model discloses an intelligent sinking speed bump, comprising a load-bearing frame, a lifting beam, a lifting top arm, a gas tank, a lifting panel and a prefabricated box; the lifting beam is supported by the lifting top arm and is located on the load-bearing frame, and the lifting top arm comprises an upper base, a lower base, a moving link, an articulated shaft and a first cylinder; two moving links are hinged to each other and are hinged to the power output end of the first cylinder through the articulated shaft, and the other ends of the two moving links are respectively hinged to the upper base and the lower base, the lower base is fixed on the load-bearing frame, the upper base is fixed on the top wall inside the lifting beam, the first cylinder is movably hinged to the mounting holes on the side walls on both sides of the lifting beam through the articulated shaft, and the load-bearing frame is provided with a limit step; through the improvement of the utility model product, the speed bump is made more intelligent and humanized, and its mechanical connection is more stable, thereby achieving improved safety and stability, improved environmental adaptability, reduced the incidence of traffic accidents, and also improved the comfort of drivers and passengers.

Description

Technical Field

[0001] The utility model relates to the technical field of traffic speed bumps, in particular to an intelligent sunken speed bump. Background Art

[0002] Speed ​​bumps, also known as speed reduction ridges, are an important traffic safety facility. By setting up speed bumps, drivers can be reminded to pay attention to the road conditions ahead, slow down, and protect the safety of pedestrians and non-motor vehicles.

[0003] Although the fixed speed bumps in the prior art have road safety functions, the poor driving comfort and noise nuisance when passing through the speed bumps are very significant. Although there are various theoretically liftable speed bumps on the market, they all have many defects such as poor reliability and stability and complex facility structures, and cannot be promoted and applied. Especially for large and heavy vehicles weighing more than two tons, liftable speed bumps are insufficient to bear pressure, exceeding the pressure range of their structure, and cannot achieve the purpose of punishment. Traditional fixed rubber speed bumps are easily damaged and have a short service life under the impact of large and heavy vehicles. Utility Model Content

[0004] In view of the above technical problems in the related technology, the utility model proposes an intelligent sunken speed bump, which can overcome the above shortcomings of the prior art.

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

[0006] An intelligent sinking speed bump;

[0007] The intelligent sunken speed bump includes a load-bearing frame, a lifting beam, a lifting top arm, a gas storage tank, a lifting panel and a prefabricated box;

[0008] The lifting beam is supported by a lifting top arm and is located on the load-bearing frame, and the lifting top arm includes an upper base, a lower base, a moving link, an articulated shaft and a first cylinder; the upper base, the lower base and both ends of the moving link are provided with a first axial hole, the two moving links are hinged to each other and are hinged to the power output end of the first cylinder through the articulated shaft, and the other ends of the two moving links are hinged to the upper base and the lower base respectively, the lower base is fixed on the load-bearing frame, and the upper base is fixed to the top wall inside the lifting beam, a second axial hole is provided on the cylinder end side of the first cylinder, and is movably hinged to the mounting holes on the side walls of both sides of the lifting beam through the articulated shaft; a limit step is provided on the load-bearing frame.

[0009] Furthermore, the span of the load-bearing frame is based on the lane width or preset width, the lifting beam is a rectangular tubular structure, the moving connecting rod is in the form of a sheet, 2-4 sheets form a group, the first axial hole on the base is in the form of a sheet with the same spacing as the sheet-shaped moving connecting rod, and is hinged to the sheet-shaped moving connecting rod alternately, and maintains a movable connection to form a bundle combination.

[0010] Furthermore, the upper base, the lower base, the two movable connecting rods, the three articulated shafts and the first cylinder constitute a lifting group; the two lifting groups are symmetrically arranged to form a large lifting group, that is, the two cylinder groups are hinged together or at a certain distance, and the top arm parts are located on both sides thereof to maintain synchronous movement; the two lifting groups are distributed on both sides of the load-bearing frame (1) and the lifting beam (2).

[0011] Furthermore, a second cylinder for assisting lifting is provided between the two lifting groups. The cylinder body end of the second cylinder is vertically located and connected to the load-bearing frame. The piston rod end of the second cylinder is hinged to the hinge seat, and the hinge seat is fixed on the top wall connected to the inside of the lifting beam.

[0012] Furthermore, openings are provided below the lifting beams at the lifting group, the lifting cluster and the plurality of second cylinders, and the lifting group and the lifting cluster are placed inside the lifting beams.

[0013] Furthermore, the prefabricated box is a rectangular box structure with an open top and is provided with an edge. The load-bearing frame is installed on the front side of the bottom of the prefabricated box. An LED light strip is provided on the upper front end of the prefabricated box and on the inner edge of the prefabricated box on the driving direction side.

[0014] Furthermore, a gas storage tank is installed at the rear side of the bottom of the prefabricated box. The gas storage tank is a rectangular steel tank structure. The gas storage tank is connected through a pressure regulating valve, the gas storage tank is connected to the cylinder through a solenoid valve, and the gas storage tank is connected to an external gas source through a pipeline.

[0015] Furthermore, a landing panel is provided on the top of the prefabricated box body, the top surface of the landing panel is at the same plane height as the roadside, and a plurality of reinforcing steel plates are longitudinally provided on the bottom of the landing panel. A third axial hole is provided at the rear end of the reinforcing rib, which is movably fixed to the top of the gas tank by an axial pin, and the front side of the landing panel is connected to the top of the lifting beam.

[0016] Furthermore, the front side of the lifting panel is fixed to the top of the lifting beam by welding, the lower base of the lifting top arm is connected to the load-bearing frame slightly tilted inward, and the prefabricated box is provided with a drainage port or a penetration hole.

[0017] Furthermore, an electrical component box is provided on the upper side of the inner side of the prefabricated box. The electrical components are waterproof components and are installed on the upper side of the inner side of the prefabricated box. An electrical component box inspection window is also provided on the landing panel directly above the electrical component box.

[0018] The beneficial effects of the utility model are as follows: through the optimized and improved design of the product of the utility model, the speed bump is made more intelligent and user-friendly, the mechanical connection is more stable, the failure rate is effectively reduced, the footprint is small, and the inflow of dust and rain will not affect the operation, thereby achieving the technical effect of improving safety and stability, and enhancing environmental adaptability, reducing the incidence of traffic accidents, and at the same time improving the comfort of drivers and passengers, playing an important role in reducing unnecessary losses of motor vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of an intelligent sunken speed bump according to an embodiment of the utility model from a first perspective;

[0021] Figure 2 According to the embodiment of the utility model, an intelligent sinking speed bump Figure 1 Detailed view of point A in the middle;

[0022] Figure 3 It is a second perspective schematic diagram of the overall structure of an intelligent sunken speed bump according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of a prefabricated box of an intelligent sunken speed bump according to an embodiment of the utility model from a first perspective;

[0024] Figure 5 It is a schematic diagram of a prefabricated box of an intelligent sunken speed bump according to an embodiment of the utility model from a second viewing angle;

[0025] Figure 6 It is a first-view schematic diagram of a lifting group of an intelligent sunken speed bump according to an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of a lifting group of an intelligent sunken speed bump according to an embodiment of the utility model from a second viewing angle;

[0027] In the figure: 1. load-bearing frame; 2. lifting beam; 3. lifting top arm; 4. gas storage tank; 5. lifting panel; 6. prefabricated box; 7. upper base; 8. lower base; 9. moving connecting rod; 10. hinge shaft; 11. first cylinder; 13. second cylinder; 14. LED light strip; 15. reinforcing rib; 16. inspection window of electrical component box. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0029] It should be understood that in the description of the embodiments of the present utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0030] like Figure 1-7 As shown, an intelligent sunken speed bump according to an embodiment of the utility model includes a load-bearing frame 1, a lifting beam 2, a lifting top arm 3, an air storage tank 4, a lifting panel 5 and a prefabricated box 6.

[0031] The load-bearing frame 1 is load-bearing, and its span is based on the lane width or preset width.

[0032] The lifting beam 2 is a rectangular tubular structure, and is supported by a lifting top arm 3 and is located on the load-bearing frame 1 .

[0033] The lifting top arm 3 is composed of an upper base 7, a lower base 8, a moving connecting rod 9, an articulated shaft 10 and a first cylinder 11. The upper base 7, the lower base 8 and both ends of the moving connecting rod 9 are provided with a first axial hole, which is arranged in pairs and arranged vertically up and down. The two moving connecting rods 9 are hinged to each other and are hinged to the power output end of the first cylinder 11 through the articulated shaft 10. The other ends of the two moving connecting rods 9 are respectively hinged to the upper base 7 and the lower base 8. The lower base 8 is fixed on the load-bearing frame 1, and the upper base 7 is fixed on the top wall inside the lifting beam 2. The cylinder end side of the first cylinder 11 is provided with a second axial hole, and is movably hinged to the mounting holes on the side walls of the lifting beam 2 on both sides through the articulated shaft 10.

[0034] When the power output end of the cylinder is pushed out, the moving connecting rod 9 will push the upper base 7 and the lower base 8 to the upper and lower sides and keep them vertical. The force will be concentrated on the line formed by the upper base 7, the lower base 8, the moving connecting rod 9, and the hinge shaft 10. The force is evenly distributed, can withstand the heavy load pressure of large and heavy vehicles, and run stably. When the power output end of the first cylinder 11 contracts, the moving connecting rod 9 will bring the upper base 7 and the lower base 8 closer to each other, and the lifting beam 2 will fall and rest on the limit step of the load-bearing frame 1, thereby realizing the lifting operation.

[0035] In some specific embodiments, as described above, the upper base 7, the lower base 8, the two movable connecting rods 9, the three articulated shafts 10, and a first cylinder 11 constitute a lifting group.

[0036] In some specific embodiments of practical applications, the two lifting groups are symmetrically arranged to form a large lifting group, that is, the two cylinder groups are hinged together or at a certain distance, and the top arm parts are located on both sides thereof to maintain synchronous movement.

[0037] In certain specific embodiments, the two lifting groups are distributed on both sides of the load-bearing frame (1) and the lifting beam (2) to better maintain the lifting and load-bearing stability of the utility model.

[0038] In some specific embodiments, a second cylinder 13 for assisting lifting is provided between the two lifting groups. The cylinder end of the second cylinder 13 is vertically located and connected to the load-bearing frame 1. The piston rod end of the second cylinder 13 is hinged to the hinge seat, and the hinge seat is fixed on the top wall connected to the inside of the lifting beam 2. The second cylinder 13 is used to push the lifting beam 2 to move up and down, making the lifting operation more stable.

[0039] In some specific embodiments, the moving link 9 is in the form of a sheet, with 2-4 sheets forming a group. The first axial hole on the base is in the form of a sheet with the same spacing as the sheet-shaped moving link 9, and is hinged to the sheet-shaped moving link 9 alternately and maintains a movable connection. This structure is a bundle combination, which is convenient for industrial implementation and makes lifting and load-bearing more stable.

[0040] An opening is arranged below the lifting beam 2 at the lifting group, the lifting cluster and the plurality of second cylinders 13 , and the lifting group and the lifting cluster are placed inside the lifting beam 2 .

[0041] The prefabricated box 6 is a rectangular box structure with an open top and edges. During installation, a pit of corresponding depth and size is first dug at the crossing, and the prefabricated box 6 is placed in the pit and prefabricated as an integral structure with the crossing ground, or poured with concrete.

[0042] The load-bearing frame 1 is installed on the front side of the bottom of the prefabricated box 6. An LED light strip 14 is provided at the upper front end of the prefabricated box 6 and the inner edge of the prefabricated box 6 on the side of the driving direction. The LED light strip 14 warns the vehicle driver by changing colors and flashing. A gas tank 4 is installed on the rear side of the bottom of the prefabricated box 6. The gas tank 4 is a rectangular steel tank structure. The gas tank 4 is connected through a pressure regulating valve. The gas tank 4 is connected to the cylinder through an electromagnetic valve. The gas tank 4 is connected to an external gas source through a pipeline. The pressure regulating valve is used to control the gas tank 4 to maintain a constant and continuous operating pressure to maintain a stable energy output, thereby reducing energy loss and enhancing the stability of the lifting cylinder.

[0043] A lifting and lowering panel 5 is provided on the top of the prefabricated box body 6, and the top surface of the lifting and lowering panel 5 is at the same plane height as the roadside. A plurality of reinforcing steel plates are longitudinally provided on the bottom of the lifting and lowering panel 5 to increase the pressure-bearing strength. A third axial hole is provided at the rear end of the reinforcing rib 15, which is movably fixed to the top of the gas tank 4 by an axial pin. The front side of the lifting and lowering panel 5 is connected to the top of the lifting beam 2. When the lifting beam 2 is raised, the lifting and lowering panel 5 is flush with the road surface. When the lifting beam 2 is lowered, the front side of the lifting and lowering panel 5 sinks to form an inclined pit body. The LED light strip 14 on the inner edge of the prefabricated box body 6 flashes yellow to warn the vehicle driver to slow down.

[0044] In some specific embodiments, the front side of the landing panel 2 is fixed to the top of the lifting beam 2 by welding. Accordingly, the lower base 8 of the lifting top arm 3 is connected to the load-bearing frame 1 at a slight inward tilt to reduce the front-to-back displacement difference caused by the curved surface activity trajectory of the landing panel 5. At the same time, this front-to-back displacement difference is eliminated by the gap between the bundled combination of the upper base 7, the lower base 8, the two moving links 9 and the three hinge shafts 10.

[0045] In some specific embodiments, the prefabricated box body 6 is provided with a drainage port or a penetration hole, wherein the drainage port is connected to a drainage channel, and the penetration hole directly leads to underground soil for drainage.

[0046] An electrical component box is also provided on the upper side of the inner side of the prefabricated box body 6 to accommodate electrical components and control parts. The electrical components are waterproof components and are installed on the upper side of the inner side of the prefabricated box body 6 to reduce the time of being soaked in rain water and increase the service life. An electrical component box inspection window 16 is also provided on the landing panel 5 directly above the electrical component box for easy maintenance.

[0047] In order to facilitate understanding of the above technical solution of the present invention, the above technical solution of the present invention is described in detail below through specific usage.

[0048] When the actual road crossing is installed, a pit of corresponding depth and size is firstly dug at the road crossing, and the prefabricated box 6 is placed in the pit and prefabricated with the road crossing ground to form an integrated structure, such as concrete pouring.

[0049] At the same time, considering the drainage problem, a drainage port is provided on the prefabricated box 6 to connect the drainage channel. If there is no drainage channel at the road crossing, a penetration hole must be provided to directly connect to the underground soil for drainage and water seepage pretreatment.

[0050] The integrated structure composed of the lifting group, auxiliary lifting cylinder, lifting beam 2 and load-bearing frame 1 is installed at the bottom of the front side of the prefabricated box 6, the gas tank 4 is installed at the bottom of the rear side of the prefabricated box 6, and the lifting and lowering panel 5 is locked on the pin hole of the axle seat at the top of the gas tank 4 through the axle pin. The front side of the lifting and lowering panel 5 is fixedly connected to the top of the lifting beam 2.

[0051] The output end of the gas tank 4 is connected to each cylinder through a solenoid valve. The output end of the gas tank 4 is connected to an external gas source through a pipeline. The gas tank 4 is controlled by a pressure regulating valve to maintain a constant and continuous operating pressure to maintain stable energy output, thereby reducing energy loss and enhancing the stability of the lifting cylinder.

[0052] The LED light strip 14 circuit is connected to the crossing power supply, and the electrical components and control components are stored in the electrical component box. An electrical component box inspection window 16 is provided on the landing panel just above the electrical component box for easy maintenance.

[0053] A plurality of reinforcing ribs 15 are longitudinally arranged on the bottom of the landing panel 5 to improve the bearing strength. A third axial hole is arranged at the rear end of the reinforcing rib 15. The front side of the landing panel 5 is connected to the top of the lifting beam 2. When the lifting beam 2 is raised, the landing panel 5 is flush with the road surface. When the lifting beam 2 is lowered, the front side of the landing panel 5 sinks to form an inclined pit. The LED light strip 14 on the inner edge of the prefabricated box 6 flashes yellow to warn the vehicle driver to slow down.

[0054] In addition, the utility model is connected to and connected to the intelligent control system, which can realize intelligent perception and response to vehicle speed. In normal conditions, the speed bump sinks and the yellow light flashes, prompting the driver that there is an obstacle ahead and that he must slow down. When the vehicle approaches the speed measurement area, the ground sensing speed detection coil of the intelligent control system will detect the vehicle speed of the lane in real time and transmit the data to the control system. If the vehicle speed exceeds the set speed limit, the control system will maintain the obstacle state, causing the vehicle to feel bumpy and impose necessary penalties on speeding drivers. When the vehicle speed is lower than the speed limit, the speed bump rises and the prompt light turns green, allowing the vehicle to pass smoothly and without obstacles, avoiding unnecessary bumps that are passively punished for normally traveling vehicles, and making traffic management more rational.

[0055] To sum up, the lifting group structure of the utility model is a fully mechanical pneumatic structure, the mechanical connection is stable, the failure rate is greatly eliminated, and it is a multi-component assembly connection, with high safety and stability, strong environmental adaptability, and the inflow of dust and rain will not affect the operation. It occupies a small volume, and the production cost is lower than the existing theoretical level of lifting speed bumps, the installation and maintenance costs are low, and the service life is long.

[0056] The utility model can realize intelligent automatic lifting by connecting to an intelligent control system. Under the control system connected to an inductive speed measuring device, it can realize the function of slowing down and passing smoothly, and speeding will be punished by bumps and then forced to slow down. While greatly improving road traffic safety, it also changes the situation in the past where fixed speed bumps would collectively be punished whether the vehicle slowed down or not.

[0057] The utility model can access 4G / 5G network control, traffic light signal linkage, gate, access control linkage, sirens (110, 119, 120) recognition, fast barrier-free passage, manual remote control, timed start and stop, and other optional functions. In special circumstances, traffic management personnel or maintenance personnel can remotely control the speed bump through mobile phones or control centers to meet different traffic management needs, and can also be linked with traffic lights, gates, access control and other equipment in a normalized manner.

[0058] In general, the utility model, with its intelligent and humanized design concept, brings a better solution to urban traffic safety management. It not only improves traffic safety and reduces the incidence of traffic accidents, but also improves the comfort of drivers and passengers, and plays an important role in reducing unnecessary losses of motor vehicles.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent sinking speed bump, characterized in that: It comprises a load-bearing frame (1), a lifting beam (2), a lifting top arm (3), a gas storage tank (4), a lifting panel (5) and a prefabricated box (6); The lifting beam (2) is supported by a lifting top arm (3) and is seated on a load-bearing frame (1). The lifting top arm (3) comprises an upper base (7), a lower base (8), a movable connecting rod (9), a hinge shaft (10) and a first cylinder (11). The upper base (7), the lower base (8) and both ends of the movable connecting rod (9) are each provided with a first axial hole. The two movable connecting rods (9) are hinged to each other and hinged to the power output end of the first cylinder (11) through the hinge shaft (10). The other ends of the two movable connecting rods (9) are respectively hinged to the upper base (7) and the lower base (8). The lower base (8) is fixed to the load-bearing frame (1), and the upper base (7) is fixed to the top wall inside the lifting beam (2). A second axial hole is provided on the cylinder end side of the first cylinder (11) and is movably hinged to the mounting holes on the side walls of both sides of the lifting beam (2) through the hinge shaft (10). A limit step is provided on the load-bearing frame (1).

2. The intelligent sunken speed bump according to claim 1, characterized in that: The span of the load-bearing frame (1) is based on the lane width or the preset width. The lifting beam (2) is a rectangular tubular structure. The movable connecting rod (9) is in the form of a sheet, and 2 to 4 sheets form a group. The first axial hole on the base is in the form of a sheet with the same spacing as the sheet-shaped movable connecting rod (9), and is alternately hinged with the sheet-shaped movable connecting rod (9) and maintains a movable connection to form a bundle combination.

3. The intelligent sunken speed bump according to claim 1, characterized in that: The upper base (7), the lower base (8), the two movable connecting rods (9), the three hinge shafts (10), and the first cylinder (11) constitute a lifting group; the two lifting groups are symmetrically arranged to form a large lifting group, that is, the two cylinder groups are hinged together or at a certain distance, and the top arm parts are located on both sides thereof to maintain synchronous movement; the two lifting groups are distributed on both sides of the load-bearing frame (1) and the lifting beam (2).

4. The intelligent sunken speed bump according to claim 3, characterized in that: A second cylinder (13) for assisting lifting is also provided between the two lifting groups. The cylinder body end of the second cylinder (13) is vertically connected to the load-bearing frame (1). The piston rod end of the second cylinder (13) is hinged to a hinge seat, and the hinge seat is fixed to a top wall connected to the inside of the lifting beam (2).

5. The intelligent sunken speed bump according to claim 3, characterized in that: An opening is provided below the lifting beam (2) at the lifting group, the lifting cluster and the plurality of second cylinders (13), and the lifting group and the lifting cluster are placed inside the lifting beam (2).

6. The intelligent sunken speed bump according to claim 1, characterized in that: The prefabricated box (6) is a rectangular box structure with an open top and provided with an edge, the load-bearing frame (1) is installed on the front side of the bottom of the prefabricated box (6), and an LED light strip (14) is provided at the upper part of the front end of the prefabricated box (6) and at the inner edge of the prefabricated box (6) on the side of the driving direction.

7. The intelligent sunken speed bump according to claim 1, characterized in that: A gas storage tank (4) is installed at the rear side of the bottom of the prefabricated box body (6). The gas storage tank (4) is a rectangular steel tank structure. The gas storage tank (4) is connected via a pressure regulating valve. The gas storage tank (4) is connected to the cylinder via a solenoid valve. The gas storage tank (4) is connected to an external gas source via a pipeline.

8. The intelligent sunken speed bump according to claim 1, characterized in that: A lifting panel (5) is provided on the top of the prefabricated box body (6). The top surface of the lifting panel (5) is at the same plane height as the roadside. A plurality of reinforcing ribs (15) are longitudinally provided on the bottom of the lifting panel (5). A third axial hole is provided at the rear end of the reinforcing rib (15) and is movably fixed to the top of the gas storage tank (4) by an axial pin. The front side of the lifting panel (5) is connected to the top of the lifting beam (2).

9. The intelligent sunken speed bump according to claim 1, characterized in that: The front side of the lifting panel (5) is fixed to the top of the lifting beam (2) by welding, the lower base (8) of the lifting top arm (3) is connected to the load-bearing frame (1) in a manner slightly inclined inward, and the prefabricated box body (6) is provided with a drainage port or a penetration hole.

10. The intelligent sunken speed bump according to claim 1, characterized in that: An electrical component box is provided on the upper side of the inner side of the prefabricated box body (6). The electrical component is a waterproof component and is installed on the upper side of the inner side of the prefabricated box body (6). An electrical component box inspection window (16) is also provided on the landing panel (5) directly above the electrical component box.

Images