Multifunctional height-limited road card

Abstract

The utility model discloses a multifunctional height limiting road card belongs to height limiting road card field, including left stand and right stand, and left stand and right stand between fixed connection has fixed crossbeam, left stand and right stand between and located fixed crossbeam's below still be equipped with lifting height limiting mechanism, and lifting height limiting mechanism includes lifting crossbeam, hydraulic oil cylinder and lifting seat, through setting up the lifting height limiting mechanism of hydraulic oil cylinder, lifting seat etc. that left stand and right stand are in, can be according to the actual demand of different operation stage of water conservancy project, conveniently adjust the height of lifting crossbeam, when engineering construction, equipment overhauls or emergency rescue, can temporarily promote height limiting height, guarantee special operation vehicle and equipment smooth traffic, and under normal state, can reduce height limiting height again, effectively limit large heavy load and super high vehicle to enter, protect water conservancy engineering road and facility safety, significantly improved the use flexibility and applicability of height limiting road card.

Description

Technical Field

[0001] This utility model relates to the field of height-limiting roadblocks, and in particular to a multifunctional height-limiting roadblock. Background Technology

[0002] Height restriction barriers are facilities installed on roads to limit the height of vehicles. They are commonly found on bridges, tunnels, urban roads, and rural roads, aiming to ensure road traffic safety and efficiency. Their core function is to prevent oversized vehicles from entering specific road sections through physical barriers (such as height restriction bars) or traffic signs, avoiding collisions with bridges, tunnel roofs, or causing traffic congestion. For example, the height restriction on highways is typically between 4.5 and 5 meters, and may be reduced to 4 meters in some mountainous sections; the height restriction on older urban bridges may be as low as 2.5 meters, while the minimum clearance for trucks on urban roads is 4.5 meters. Furthermore, temporary height restrictions may be implemented due to road maintenance, special events, or natural disasters. Drivers need to check real-time height restriction information through traffic department websites, navigation software, etc., and violations may result in penalties.

[0003] In existing technologies, some roads in water conservancy projects, such as dike-top roads and roads around reservoir dams, have limited design load-bearing capacity. Frequent passage of large, heavy-duty vehicles may cause road surface damage and roadbed subsidence, affecting the service life of the roads and the safe operation of the project. Allowing large cement, sand, and other transport vehicles to pass freely will cause significant damage to the roads. Furthermore, if oversized vehicles enter the project area, they may collide with structural components of buildings, electrical equipment, water pipelines, etc., causing damage to facilities, affecting the normal function of the water conservancy project, and even triggering safety accidents. Therefore, setting up height-restricted roadblocks can limit the entry of relevant vehicles and protect the safety of roads and buildings.

[0004] However, traditional height-restricted roadblocks mostly use fixed height settings, making it difficult to flexibly adjust the height restriction according to the actual needs of different operational stages of water conservancy projects. During special periods such as construction, equipment maintenance, or emergency rescue, the special nature of the vehicles and equipment necessitates temporary adjustments to the height restriction, but fixed-height roadblocks cannot meet these needs, causing numerous inconveniences to engineering operations. Furthermore, existing height-restricted roadblocks have relatively limited functionality, lacking effective warning and guidance measures. At night or in inclement weather conditions, drivers may have difficulty clearly recognizing height restriction signs, posing certain safety hazards and potentially leading to collisions. Utility Model Content

[0005] The main purpose of this utility model is to provide a multifunctional height-limiting roadblock that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A multi-functional height-limiting roadblock includes a left column and a right column, with a fixed crossbeam fixedly connected between the left and right columns. A lifting height-limiting mechanism is also provided between the left and right columns and below the fixed crossbeam. The lifting height-limiting mechanism includes a lifting crossbeam, a hydraulic cylinder, and a lifting seat. The hydraulic cylinders are fixedly connected inside the left and right columns, and the lifting seat is fixedly connected to the output end of the hydraulic cylinder by threaded pins and nuts. The lifting crossbeam is fixedly connected between the left and right symmetrical lifting seats by bolts. A height-limiting indicator sign is fixedly installed at the front end of the lifting crossbeam, and a flashing warning light is fixedly installed at the top end of the lifting crossbeam.

[0008] Preferably, the left and right columns each have an internal receiving cavity, and the opposite walls of the left and right columns each have a movable side opening that communicates with the receiving cavity.

[0009] Preferably, a T-shaped guide bar is fixedly installed on the inner wall of the receiving cavity.

[0010] Preferably, the hydraulic cylinder is fixedly installed on the bottom surface of the cavity, and a connecting seat is fixedly installed on the output end of the hydraulic cylinder, with a connecting hole provided on the front wall of the connecting seat.

[0011] Preferably, a T-shaped guide groove is provided on the outer side wall of the lifting seat, and the lifting seat is movably installed together with the T-shaped guide bar through the T-shaped guide groove and located in the movable side opening. A set of symmetrical connecting blocks is fixedly installed on the bottom surface of the lifting seat, and an installation hole is provided on the front end wall of the connecting block. The threaded pin is inserted into the installation hole and passes through the connecting hole, and the nut is threadedly connected to the threaded pin. A set of symmetrical screw holes is also provided on the inner side wall of the lifting seat.

[0012] Preferably, the lifting beam has fixing holes on its left and right sides, and bolts pass through the fixing holes and are threaded together with the screw holes.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this utility model, a lifting height restriction mechanism consisting of hydraulic cylinders and lifting seats is installed in the left and right columns. The height of the lifting beam can be conveniently adjusted according to the actual needs of different operation stages of water conservancy projects. During construction, equipment maintenance, or emergency rescue, the height restriction can be temporarily raised to ensure the smooth passage of special operation vehicles and equipment. Under normal conditions, the height restriction can be lowered to effectively restrict the entry of large, heavy-duty, and over-height vehicles, protect the safety of water conservancy project roads and facilities, and significantly improve the flexibility and applicability of the height restriction roadblock.

[0015] The height restriction sign fixedly installed at the front end of the lifting beam can clearly and intuitively display the height restriction information to the driver, making it easier for him to judge in advance whether the vehicle meets the passage conditions; the flashing warning light set at the top can attract the driver's attention from a distance at night or in adverse weather conditions such as rain and fog, enhance the visibility of the height restriction sign, effectively reduce the probability of collision accidents, and provide double protection for traffic safety in water conservancy project areas.

[0016] The cavities inside the left and right columns provide reasonable installation space for lifting mechanism components such as hydraulic cylinders, making their layout compact and orderly. The T-shaped guide bars on the inner wall of the cavities cooperate with the T-shaped guide grooves on the outer wall of the lifting seat to provide precise guidance and stable support during the lifting process, preventing the lifting beam from swaying or shifting. At the same time, the use of connecting components such as threaded pins, nuts, and bolts ensures that the connections between the components are firm, improving the stability and reliability of the overall structure and extending the service life of the height restriction roadblock.

[0017] This height-restriction roadblock integrates multiple functions such as height restriction adjustment, clear warning signs, and stable structural design. It not only effectively solves the problems of traditional height-restriction roadblocks being single-function and lacking flexibility, but also meets the complex and ever-changing traffic management needs of water conservancy projects. It reduces the damage to water conservancy project roads and facilities caused by illegal vehicle passage, lowers maintenance costs, and improves the intelligence and efficiency of traffic management in water conservancy project areas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the left column of this utility model;

[0020] Figure 3 This is a structural breakdown diagram of the lifting and height limiting mechanism of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A;

[0022] Figure 5 This is a schematic diagram of the overall structure of the lifting seat of this utility model.

[0023] In the diagram: 1. Left column; 2. Right column; 3. Fixed crossbeam; 4. Lifting and height limiting mechanism; 5. Receiving cavity; 6. Movable side opening; 7. T-shaped guide bar; 8. Lifting crossbeam; 9. Height limit indicator; 10. Flashing warning light; 11. Hydraulic cylinder; 12. Connecting seat; 13. Connecting hole; 14. Lifting seat; 15. T-shaped guide groove; 16. Connecting block; 17. Mounting hole; 18. Threaded pin; 19. Nut; 20. Screw hole; 21. Fixing hole; 22. Bolt. Detailed Implementation

[0024] 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.

[0025] like Figure 1 - Figure 5 As shown, a multi-functional height-limiting roadblock includes a left column 1 and a right column 2, with a fixed crossbeam 3 fixedly connected between the left column 1 and the right column 2. A lifting height-limiting mechanism 4 is also provided between the left column 1 and the right column 2 and below the fixed crossbeam 3. The lifting height-limiting mechanism 4 includes a lifting crossbeam 8, a hydraulic cylinder 11, and a lifting seat 14. The hydraulic cylinder 11 is fixedly connected inside the left column 1 and the right column 2, and the lifting seat 14 is fixedly connected to the output end of the hydraulic cylinder 11 through a threaded pin 18 and a nut 19. The lifting crossbeam 8 is fixedly connected between the left and right symmetrical lifting seats 14 through bolts 22. A height-limiting indicator 9 is fixedly installed at the front end of the lifting crossbeam 8, and a flashing warning light 10 is fixedly installed at the top end of the lifting crossbeam 8.

[0026] like Figure 2 As shown, the left column 1 and right column 2 each have an internal cavity 5, and the opposite walls of the left column 1 and right column 2 each have a movable side opening 6 that communicates with the cavity 5. The left column 1 and right column 2 serve as the supporting body of the height-limiting roadblock. The internal cavity 5 provides installation space for core components such as the hydraulic cylinder 11 and the lifting seat 14. The movable side opening 6 communicates with the cavity 5, allowing the lifting seat 14 to move vertically within the cavity 5 while part of the structure extends out through the movable side opening 6 and connects with the lifting beam 8, thus realizing the lifting function of the height-limiting beam. The design of the cavity 5 effectively protects the internal precision components, reduces the corrosion of equipment such as the hydraulic cylinder 11 by external environment such as rainwater and dust, and extends the service life. The movable side opening 6 provides a channel for the movement and connection of the lifting seat 14, ensuring the normal operation of the lifting height-limiting mechanism 4, and making the entire height-limiting roadblock structure more compact and reasonable.

[0027] like Figure 2 As shown, a T-shaped guide bar 7 is fixedly installed on the inner wall of the receiving cavity 5. The T-shaped guide bar 7 is fixedly installed on the inner wall of the receiving cavity 5 and cooperates with the T-shaped guide groove 15 on the outer wall of the lifting seat 14 to form a sliding guide structure. When the hydraulic cylinder 11 drives the lifting seat 14 to move up and down, the T-shaped guide groove 15 slides along the T-shaped guide bar 7. By utilizing the constraint characteristics of the T-shaped structure, the displacement of the lifting seat 14 in the horizontal direction is restricted, and it is only allowed to make linear motion in the vertical direction. This guide structure significantly improves the stability and accuracy of the lifting process of the lifting seat 14, prevents the lifting beam 8 from shaking or deviating during lifting, ensures the accuracy of the height limit adjustment, effectively avoids height limit errors or equipment damage caused by structural instability, and enhances the reliability and safety of the height limit roadway.

[0028] like Figures 3-5 As shown, the hydraulic cylinder 11 is fixedly installed on the bottom surface of the cavity 5, and a connecting seat 12 is fixedly installed on the output end of the hydraulic cylinder 11. A connecting hole 13 is provided on the front wall of the connecting seat 12. The hydraulic cylinder 11 is fixed to the bottom of the cavity 5 and serves as the power source for the lifting and limiting mechanism 4. The extension and retraction of the piston rod is controlled by the hydraulic system. The connecting hole 13 on the connecting seat 12 at its output end is used to align with the mounting hole 17 on the connecting block 16 on the bottom surface of the lifting seat 14. Power transmission is achieved by inserting a threaded pin 18 and fastening it with a nut 19. When the hydraulic oil inside the hydraulic cylinder 11 pushes the piston rod to extend or retract, it drives the connecting seat 12 to move, thereby driving the lifting seat 14 to rise and fall. This connection method enables the hydraulic cylinder 11 to transmit power to the lifting seat 14 stably and reliably, ensuring the smooth execution of the lifting action. At the same time, it is convenient to disassemble and maintain the hydraulic cylinder 11 separately. If a fault occurs, the connection of the threaded pin 18 and the nut 19 can be quickly disconnected to repair or replace the hydraulic cylinder 11, reducing the difficulty of equipment maintenance.

[0029] like Figures 3-5As shown, a T-shaped guide groove 15 is provided on the outer wall of the lifting seat 14, and the lifting seat 14 is movably installed together with the T-shaped guide bar 7 through the T-shaped guide groove 15 and located in the movable side opening 6. A set of symmetrical connecting blocks 16 are fixedly installed on the bottom surface of the lifting seat 14, and a mounting hole 17 is provided on the front wall of the connecting block 16. A threaded pin 18 is inserted into the mounting hole 17 and passes through the connecting hole 13, and a nut 19 is threadedly connected to the threaded pin 18. A set of symmetrical screw holes 20 is also provided on the inner wall of the lifting seat 14. The T-shaped guide groove 15 on the outer wall of the lifting seat 14 cooperates with the T-shaped guide bar 7 to achieve guidance. The connecting block 16 on the bottom surface is aligned with the connecting hole 13 of the hydraulic cylinder 11 output end connecting seat 12 through the mounting hole 17. The threaded pin 18 is inserted and tightened with the nut 19 to fix the lifting seat 14 and the hydraulic cylinder 11. When the hydraulic cylinder 11 works, it drives the lifting seat 14 to move vertically along the T-shaped guide bar 7. The cooperation between the T-shaped guide groove 15 and the T-shaped guide bar 7 ensures the stable movement of the lifting seat 14. The connection method of the threaded pin 18 and the nut 19 makes the lifting seat 14 firmly connected to the hydraulic cylinder 11, ensuring the reliability of power transmission. In addition, this connection design makes it easy to disassemble and install the lifting seat 14, facilitates equipment debugging and maintenance, and improves the maintainability of the height restriction roadblock.

[0030] like Figures 3-5 As shown, fixing holes 21 are provided on the left and right sides of the lifting beam 8, and bolts 22 pass through the fixing holes 21 and are threaded together with screw holes 20. The screw holes 20 on the inner side wall of the lifting seat 14 correspond to the fixing holes 21 on both sides of the lifting beam 8. By passing the bolts 22 through the fixing holes 21 and screwing them into the screw holes 20, the lifting beam 8 and the lifting seat 14 are securely connected. When the lifting seat 14 is lifted and lowered under the drive of the hydraulic cylinder 11, it drives the lifting beam 8 to move synchronously. The bolt connection method makes the lifting beam 8 and the lifting seat 14 firmly connected, ensuring that the height limit beam will not fall off or loosen during the lifting process, ensuring the stable realization of the height limit function. At the same time, it is convenient to disassemble the lifting beam 8 separately. If the height limit sign 9, the flashing warning light 10 and other components installed on the lifting beam 8 are damaged, the beam can be quickly disassembled for repair or replacement, improving equipment maintenance efficiency.

[0031] This multi-functional height-limiting roadblock integrates mechanical structure and intelligent control technology. It is primarily used on the top roads of water conservancy projects to restrict the entry of oversized vehicles, ensuring the safety of the dikes. Its working principle involves the coordinated operation of multiple components, as detailed below:

[0032] When it is necessary to adjust the height limit, staff can issue control commands in various ways, such as operating the raise, lower, and stop buttons in the external power distribution cabinet, using two standard remote controls with a control distance of about 50-100 meters, or remotely operating through a mobile smart control terminal.

[0033] After the control command is issued, the hydraulic system inside the hydraulic cylinder 11 starts to work. The hydraulic system mainly consists of the station assembly, motor pump group, control valve group, hydraulic cylinder 11 and connecting pipelines. As the hydraulic system is existing technology, it will not be described in detail here. Taking the raising limit beam as an example, when the raising command is received, the motor pump group starts, converts electrical energy into mechanical energy, and drives the oil pump to work. The oil pump draws hydraulic oil from the oil tank and pressurizes and delivers the hydraulic oil to the control valve group through the connecting pipeline. The control valve group adjusts the flow direction and pressure of the hydraulic oil according to the control command, so that the high-pressure hydraulic oil enters the rodless chamber (the chamber on the piston side) of the hydraulic cylinder 11. As the hydraulic oil continues to enter the rodless chamber, the pressure in the chamber gradually increases, pushing the piston rod to extend.

[0034] When the piston rod extends, it drives the connecting seat 12 fixed at its output end to move upward synchronously. The connecting hole 13 on the front wall of the connecting seat 12 and the mounting hole 17 on the bottom connecting block 16 of the lifting seat 14 are connected by threaded pin 18 and fastened by nut 19. In this way, the movement of the connecting seat 12 drives the lifting seat 14 to rise.

[0035] The T-shaped guide groove 15 on the outer wall of the lifting seat 14 is closely fitted with the T-shaped guide bar 7 fixedly installed on the inner wall of the receiving cavity 5. During the lifting process of the lifting seat 14, the T-shaped guide groove 15 slides along the T-shaped guide bar 7. The T-shaped structure effectively restricts the horizontal displacement of the lifting seat 14, so that it can only make a straight upward movement in the vertical direction, thus ensuring the stability and accuracy of the lifting process.

[0036] The screw holes 20 on the inner side wall of the lifting seat 14 correspond to the fixing holes 21 opened on the left and right sides of the lifting beam 8. The bolts 22 pass through the fixing holes 21 and are screwed into the screw holes 20 to achieve a tight connection between the lifting beam 8 and the lifting seat 14. Therefore, when the lifting seat 14 rises, it drives the lifting beam 8 to rise synchronously, thereby realizing the raising of the height limit beam.

[0037] When it is necessary to lower the height-limiting crossbeam, the control command causes the control valve group to change the direction of hydraulic oil flow, allowing the hydraulic oil in the rodless chamber of hydraulic cylinder 11 to flow back to the oil tank. At the same time, the piston in the rod chamber (the chamber on the side where the rod extends) is connected to high-pressure hydraulic oil. Under the action of the hydraulic oil pressure in the rod chamber, the piston rod retracts, driving the connecting seat 12 and the lifting seat 14 to descend, thereby causing the lifting crossbeam 8 to descend synchronously, completing the lowering operation of the height-limiting crossbeam.

[0038] Meanwhile, in the event of a power outage during the entire lifting process, the equipment's emergency manual lifting system can be activated. Workers can manually operate the relevant devices to raise and lower the height-limiting beam, ensuring the roadblock can still function normally in case of emergencies. Furthermore, the roadblock uses a solar power system and a 12V power unit. The solar panels convert solar energy into electricity and store it to power equipment such as the hydraulic cylinder 11, saving costs and being energy-efficient and environmentally friendly. The height-limiting beam is equipped with a fixed height-limiting indicator sign 9 at the front and a fixed flashing warning light 10 at the top, as well as a 600mm diameter... The lead alloy plate traffic height restriction sign 9 and the lifting beam 8 are equipped with solar-powered double-sided four-flash warning lights 10, which can clearly display height restriction information to drivers in different environments and serve as a warning, reminding drivers to abide by traffic rules and reducing accidents caused by exceeding height limits. The overall structure of the roadblock is stable. The left column 1 and right column 2 are welded from galvanized steel pipes of specific specifications and have a reinforced internal structure. The fixed beam 3 and the lifting beam 8 also have corresponding specifications and reinforcement designs. The column foundation cage is formed by welding and pre-embedded in concrete. After the various parts of the steel structure are welded, they are assembled by connecting steel plates and foot plates, ensuring the long-term stable operation of the roadblock.

[0039] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional height-limited road card, comprising a left stand column (1) and a right stand column (2), and a fixed cross beam (3) fixedly connected between the left stand column (1) and the right stand column (2), characterized in that: A lifting height limiting mechanism (4) is provided between the left column (1) and the right column (2) and below the fixed crossbeam (3). The lifting height limiting mechanism (4) includes a lifting crossbeam (8), a hydraulic cylinder (11) and a lifting seat (14). The left column (1) and the right column (2) are respectively fixedly connected to the hydraulic cylinder (11). The lifting seat (14) is fixedly connected to the output end of the hydraulic cylinder (11) through a threaded pin (18) and a nut (19). The lifting crossbeam (8) is fixedly connected between the left and right symmetrical lifting seats (14) through bolts (22). A height limiting sign (9) is fixedly installed at the front end of the lifting crossbeam (8). A flashing warning light (10) is fixedly installed at the top end of the lifting crossbeam (8).

2. The multi-functional height-limiting roadblock according to claim 1, characterized in that: The left column (1) and the right column (2) are respectively provided with receiving cavities (5), and the opposite walls of the left column (1) and the right column (2) are respectively provided with movable side openings (6) that communicate with the receiving cavities (5).

3. A multi-functional height-limiting roadblock according to claim 2, characterized in that: A T-shaped guide bar (7) is fixedly installed on the inner wall of the receiving cavity (5).

4. A multi-functional height-limiting roadblock according to claim 3, characterized in that: The hydraulic cylinder (11) is fixedly installed on the bottom surface inside the cavity (5), and a connecting seat (12) is fixedly installed on the output end of the hydraulic cylinder (11). A connecting hole (13) is provided on the front wall of the connecting seat (12).

5. A multi-functional height-limiting roadblock according to claim 4, characterized in that: The outer side wall of the lifting seat (14) is provided with a T-shaped guide groove (15), and the lifting seat (14) is movably installed together with the T-shaped guide bar (7) through the T-shaped guide groove (15) and located in the movable side opening (6). A set of symmetrical connecting blocks (16) is fixedly installed on the bottom surface of the lifting seat (14), and an installation hole (17) is provided on the front end wall of the connecting block (16). The threaded pin (18) is inserted into the installation hole (17) and passes through the connecting hole (13), and the nut (19) is threadedly connected to the threaded pin (18). A set of symmetrical screw holes (20) is also provided on the inner side wall of the lifting seat (14).

6. A multi-functional height-limiting roadblock according to claim 5, characterized in that: The lifting beam (8) has fixing holes (21) on its left and right sides respectively, and bolts (22) pass through the fixing holes (21) and are threaded together with the screw holes (20).

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