What is road blocker?

road blocker

Last updated on: April 11th, 2024 15:50 pm

What is road blocker?

Road blocker is a kind of traffic security equipment used to restrict the passage of vehicles and pedestrians. With good characteristics such as anti-collision, anti-terrorism, anti-rust, corrosion resistance, and long service life. It is mainly composed of a high-strength barrier section and auxiliary hard stab. When the tire is pressed against the stainless steel nail on the automatic road blocker, the gas in the tire will leak out from the inner hole of the needle to effectively intercept the vehicle. The automatic road blocker adopts hydraulic driving technology for mandatory interception, with strong load-bearing and collision resistance, and simple and flexible operation.

Hydraulic road blockers are usually used to prevent entry into prohibited areas or slow down traffic flow. The hydraulic rising road blocker can change traffic behavior through physical isolation, achieve road safety control, and make road traffic safer and more orderly.

The hydraulic rising road blocker is also a vehicle control device designed for entrances and exits of highways, urban roads, etc. This equipment adopts advanced hydraulic technology, which can quickly lift and lower roadblocks, achieving control over the passage of vehicles.

In essence, the hydraulic road blocker is an efficient, stable, environmentally friendly, and safe vehicle control solution that can play an important role on various occasions and has broad application prospects. The hydraulic rising road blocker is a very useful road protection device that can help urban management departments better manage and control traffic, ensure the safety of people’s lives and property, and promote the development of urban transportation.


Hydraulic road blocker machine plays a very important role in road traffic and can be used on many special occasions. It can effectively prevent vehicles from forcibly reloading checkpoints. So what are the components of the automatic road blocker system?

The hydraulic road blocker is composed of three parts: the main frame, the hydraulic power system, and the electrical control system. The overall construction material of the hydraulic road blocker is welded from standard mold steel plates, so it has strong load-bearing and collision resistance.

Moreover, there are no electrical appliances or wiring settings inside the roadblock machine, so it can operate safely and stably during use. Among them, the bracket and anti-collision plate are the main components supporting the entire equipment, the flip plate is the core component to achieve the function of the roadblock machine, and the driving mechanism and hydraulic pump station are important components to achieve the power and motion control of the roadblock. The hydraulic cylinder is the core component in the operation of the equipment, driving the flip plate to lift and lower, achieving vehicle limitation.

1. The main frame of the hydraulic road blocker consists of a frame, a movable flap, a hydraulic cylinder, and two sets of balancing mechanisms. The movable flip board is connected to the frame through two sets of rotating shafts, and the upper and lower earrings of the hydraulic cylinder are respectively connected between the frame and the movable flip board through the rotating shafts, serving as the power source for the movement of the main frame. The two sets of balancing mechanisms are connected between the movable flip board and the frame, playing a role in load balancing and buffering.

The whole machine is made of steel structure, welded with steel plate and channel steel, with a strong anti-collision ability and load-bearing ability. There are no electrical appliances and lines in the mainframe, which can achieve the waterproof effect and safe use.

hydraulic road blocker

2. Hydraulic system:

The hydraulic system consists of a drive motor, hydraulic oil pump, combined solenoid valve, manual control valve, pressure indicator, etc.

The hydraulic transmission station mainly changes the rising and falling speed through the oil tank and manual oil pump valve). In case of power failure, the baffle can be lowered manually or raised manually.

3. Electric control system: automatic electronic control part, control motherboard, and automatic controller: including control box, remote controller, and manual button, which are controlled and used by the personnel on duty.

The above content introduces the components of the hydraulic road blocker system, which fully reflects its role.

4. Interface function description:

Ascending and descending input: command control input interface for the ascending and descending of roadblock machine; The precise time of raising limit and lowering the limit is adjustable: through the limit time, the service life of the roadblock machine is prevented from being affected by the long-term operation of the roadblock machine in the blocked state;

Ascending solenoid valve and descending solenoid valve: switch and close the oil circuit solenoid valve of the hydraulic pump of the roadblock machine, so as to realize the functions of ascending, descending, and stopping the operation of the roadblock machine; Raise and lower regulating valves to regulate the rising and falling speed.

Working principle:

The automatic road blocker machine takes hydraulic energy as the power to realize the lifting function of the turnover body. The working principle of the automatic road blocker is:

The working principle of the hydraulic road blocker is to drive the hydraulic pump station through the driving mechanism to rotate the flipper driven by the oil hydraulic cylinder, thereby preventing the vehicle from going backward. When the hydraulic pump station receives a control signal, the oil hydraulic cylinder will rotate the flap to the specified angle. When the vehicle passes in the forward direction, it will automatically rise, and after leaving, the flap will automatically lower.

Request a Free Estimate:

Road blockers can be selected and customized according to the different needs of the application site and customers’ actual needs and can meet the functional requirements of various customers. If you need to customize such hydraulic road blocker products, please don’t hesitate to contact us. We are always pleased to solve your problems.

    Your name*

    Your email*



    Types of road blockers

    Road blockers can be classified into the following types based on their control methods and materials:

    1. Mechanical road blocker: A mechanical road blocker is a facility that uses mechanical principles to control the passage of vehicles and pedestrians, mainly achieved through mechanical components such as lifting rods and telescopic rods. The mechanical road blocker machine is easy to operate, cost-effective, and suitable for some low-speed, low-flow roads or residential entrances and exits.

    2. Electric road blocker: An electric road blocker is driven by an electric motor, which can automatically control the lifting and retraction of lifting rods or telescopic rods through remote control or sensors, achieving automatic control. The electric road blocker is easy to operate, efficient, and suitable for medium-speed and medium-flow roads or commercial squares.

    3. Hydraulic road blocker: Hydraulic road blocker is a facility that uses hydraulic principles to control the passage of vehicles and pedestrians, and controls the lifting and extension of lifting rods or telescopic rods through hydraulic cylinders. The hydraulic road blocker has a simple structure, and good stability, and is suitable for high speed, high-flow roads or bridges and other places.

    Application site:

    1. Mainly used for vehicle passage control in special places such as customs, border inspection, logistics, ports and docks, prisons, vaults, nuclear power plants, military bases, government key departments, airports, etc; The duty personnel issue instructions through the control system, and the obstacle device is quickly lifted and lowered by hydraulic transmission.

    After the vehicle passes, it is automatically commanded to lift the obstacle device through inductance detection or manual button operation to achieve the goal of controlling the release or closure of the lane or gate, effectively preventing the vehicle from forcefully rushing and getting stuck. By restricting passing vehicles, traffic order, including the safety of major facilities and venues, has been effectively ensured.

    2. The entrance gates of important units such as state organs and the military: Install lifting and anti-riot roadblocks, which can be controlled electrically, remotely, or by swiping cards, effectively preventing the entry of vehicles from external units and illegal vehicles.

    Why use road blockers?

    As we all know, the main purpose of the design and development of the overturned hydraulic road blocker is to guard and manage the sensitive and key unit entrance gates and prohibit unauthorized vehicles from forcibly entering. In addition to being practical, it is also very reliable and safe.

    1. Quick calm

    The lifting time can reach up to 3 seconds, which is far greater than the pneumatic lifting column of the same specification, which is extremely valuable. Due to its use of a hydraulic drive unit, it operates smoothly and calmly, effectively solving the problem of high noise caused by the traditional pneumatic lifting column due to the operation of the air pump.

    2. Control agility

    The control unit adopts a multifunctional logic controller, which can modulate various functional modes to meet the different functional needs of different users. Furthermore, it is worth mentioning that its movement range is designed with adjustable timing, allowing users to freely control the height of the cover plate, effectively saving energy consumption.

    road blocker

    3. Unique structure

    The core part of the hydraulic unit and mechanical power mechanism is designed in an integrated manner, which can effectively transmit mechanical energy to the hydraulic drive unit and achieve efficient action. The unique design of the hydraulic unit to achieve pressure rise and excellent performance is rare in the same field both domestically and internationally.

    4. Safe and reliable

    When encountering emergency situations such as power outages, the emergency descent button can be manually activated, and the barrier cover can be lowered to open the passage and release the vehicle. The upper and lower parts of the internal fixed mechanism are respectively equipped with current detection sensors and electromagnetic sensors, thereby achieving effective overcurrent protection for the power unit and limiting the movement of the column, ensuring stable and reliable operation.

    5. Affordable

    Due to its integrated hydraulic transmission mode, it is environmentally friendly, energy-saving, low consumption, lower failure rate, longer service life, and reduces maintenance costs. In addition, the use of a non-traditional guiding mechanism design makes installation and maintenance more convenient and efficient, while also reducing costs.

    6. Unique structure

    The hydraulic road blocker adopts a detachable design for easy maintenance and repair.

    7. Optional configuration

    According to different usage locations, corresponding core components such as hydraulic power stations and motors can be selected to improve the overall performance of the machine; Configure core power components such as high-power oil pump motors to achieve efficient operation. At the same time, through reasonable layout design, the number of mechanical components is reduced, maintenance costs are reduced, and the service life is extended.

    The design of the hydraulic unit and mechanical power mechanism is the core part of the automatic road blocker, which can transfer mechanical energy to the hydraulic driving unit and realize the unique design of pressure rise.

    Main function:

    The main function of the road blocker is to prevent unauthorized vehicles from forcibly entering the protected area, providing safety guarantees for key prevention departments such as the military, prisons, road inspection stations, warehouses, and docks. It has high practicality, reliability, and security.

    1. Control the passage of vehicles and pedestrians to prevent illegal entry and reverse driving.

    2. Improve road safety and smooth traffic to reduce accidents. The hydraulic road blocker has functions such as collision prevention, stab prevention, chipping prevention, and digging prevention, which can effectively prevent vehicles from going backward and violating regulations, ensure road traffic safety, and reduce the incidence of traffic accidents.

    3. It can be used in conjunction with other transportation facilities, such as electronics and intelligent monitoring, to improve the efficiency and accuracy of traffic management.

    4. The road blocker can be remotely controlled through an integrated control system, making it more convenient and efficient.

    automatic road blockers

    8. Automatic control: add a vehicle detection system (ground sense), which can realize the automatic control of the automatic road blocker system. In the automatic control mode, press the “release” key, and the system will automatically start all functions such as “barrier lowering” → “vehicle detection” → “automatic barrier setting”.

    9. Parking gateway linkage: the parking gateway can be added according to the needs of customers, and the connection socket with the computer management system can be reserved.

    10. Traffic signal: when the vehicle passes, it displays the traffic status of the lane; When the red light is on, the lane is prohibited, and when the green light is on, the lane is released.

    11. Card swiping release (optional): internal personnel can swipe their cards at a short distance (8-10cm), medium distance (0.7-1m), and long distance (3-15m) to pass without stopping through the card swiping device

    Features of road blocker:

    The main features of the hydraulic road blocker are compact equipment structure, easy operation, strong impact resistance, and the ability to efficiently and stably complete entrance and exit control tasks.

    1. The structure is firm and durable, the bearing load is large, the action is stable and the noise is low.

    2. PLC control is adopted, and the operation performance of the system is stable and reliable, which is convenient for integration.

    3. The rising road blocker can be controlled in linkage with other equipment such as parking barrier gates, or can be combined with other control equipment to realize automatic control.

    4. In case of power failure or failure, if the automatic road blocker is in the raised state and needs to be lowered, the raised road blocker cover can be lowered to the horizontal position through manual operation to allow vehicles to pass.

    5. The international leading low-pressure hydraulic drive technology is adopted, and the whole system has high safety, reliability, and stability.

    6. Remote control device: by means of wireless remote control, it can move the lifting of the remote control rising road blocker within about 30 meters around the controller (depending on the on-site radio communication environment).

    7. The following functions can be added according to user requirements:

    Card swiping control: add a card-swiping device to automatically control the rise and fall of automatic road blockers through card swiping.

    The linkage between parking barrier gate and road blocker: equipped with parking barrier gates (car stopper) / access control, the linkage between parking barrier gates, access control, and road blocker can be realized.

    Connection with computer pipe burying system or charging system: it can connect pipe burying system and charging system, which is controlled by a computer.


    A hydraulic road blocker is just like a wall to prevent the passage of illegal vehicles on the road. Its protective performance includes a single-sided anti-collision road blocker machine and a double-sided anti-collision road blocker machine. Generally, a single-sided road blocker is the most widely used in the market. Road blocker machines on the market generally use hydraulic power to realize the lifting function of the turning body. Its advantages are as follows:

    1. The reaction speed of the hydraulic road blocker machine is relatively fast, and the lifting time can be up to 3 seconds, which is extremely valuable. Because it adopts the hydraulic driving unit, the action is soft and calm, which well solves the problem of the large working noise of the traditional pneumatic lifting due to the air pump.

    2. The safety factor of the hydraulic road blocker machine is higher. Compared with other rising road blocker devices, the automatic road blocker machine can achieve mandatory interception through its own driving technology, and its load-bearing or anti-collision ability is very strong. It is also flexible and simple to operate, and the action is very fast.

    3. Hydraulic road blockers also have significant advantages such as environmental protection and safety. Due to the use of high-pressure hydraulic technology, this device has more stable and reliable characteristics compared to other vehicle control devices, is less prone to malfunctions, and can avoid unnecessary harm to vehicles and pedestrians through some safety protection measures, achieving the goal of ensuring the safety of pedestrians and vehicles.

    4. The hydraulic road blocker is very convenient to use. Simply operate the switch inside the control box, and the panel can quietly lift and lower according to instructions. And the device can adapt to various environments and work normally in harsh weather conditions, such as rain, snow, high temperatures, etc.

    5. The hydraulic rising road blocker has the characteristics of low maintenance cost and low failure rate.

    road blocker

    Installation steps:

    Step 1: Dig a pit and install a drainage pipe

    Step 2: Produce a reinforced concrete base

    Step 3: Lift the roadblock machine and steel base into the base platform for positioning

    Step 4: Pour C30 concrete around the roadblock machine

    Step 5: Connect oil pipes and wires, test, and run

    Main parameters:

    Main material: Q235 steel plate, cover plate thickness 20mm, passage pressure: can pass around 120T container truck

    Drive form: hydraulic power source

    Interception height: 550mm, 600mm (supports customization)

    Panel width: 1000mm, 1100mm (supports customization)

    Interception width: 2m, 3m, 4m, 5m, 6m (customized)

    Collision resistance: 6.8T container truck, 80km/h

    Anti-collision level: IP68

    Cross-section color: standard black and yellow, other colors available

    Operating environment: -40 ° C~70 ° C

    Control method: dual use of wireless remote control and wire control, which can manually control the lifting and lowering of roadblocks in case of a power outage or malfunction

    Control distance: wireless remote control (accessible) 150m, wire control 200m

    Lifting speed: 3-4 seconds

    Power voltage: AC380V

    Control system voltage: DC12V Motor power: Power unit 1.5/2.2/3.7KW (no power consumption in standby mode)

    Body size: 6000mm × 1100mm × 755mm (customizable)

    Advantages of hydraulic system:

    1. The hydraulic power system of the automatic road blocker is very quiet for mechanical products. This is very difficult for many machines. Due to the noise attenuation system, the decibel can be controlled within 60 dB.

    2. The impact on the environment is very small, which meets the growing demand for low environmental impact and creates a new low point for the impact on the environment.

    3. Low energy consumption and low power voltage cost to compensate for the vacancy of variable flow pump configuration and ensure the low cost of mechanical operation. Combined with a high-efficiency motor, the power cost is absolutely kept at a low level.

    The power unit is also part of the hydraulic system and helps the hydraulic system supply fuel correctly. The power unit controls various valve switches in the system to realize rapid system switching. By using this product, we can timely understand the oil supply status in the system, find out the faults in the system, realize the rapid shutdown of the system and avoid major accidents. The application of power units in the hydraulic system is very mature, which is helpful to solve the problem of oil supply.

    Maintenance precautions:

    There are some details you need to know in the process of maintaining the hydraulic road blocker. What do these details mainly include? I’ll take you to know more about this problem.

    1. In the process of electrical maintenance, the relevant power supply shall be cut off in time, and signs such as maintenance and overhaul shall be hung on obvious positions.

    2. Check the working condition of switches, buttons, indicator lights, and buzzers once a month.

    3. When there are vehicles or pedestrians above the turnover barrier machine, lift it strictly to avoid harm.

    4. Keep the drainage at the bottom of the turnover barrier body unblocked and the surroundings clean to ensure the service life, performance, and waterproof tightness of the lifting barrier machine parts.

    5. During the operation of anti-terrorism automatic road blockers, prevent continuous rise and landing. Rising and falling are not suitable for continuous fast switching, which is easy to shorten the service life of the motor and hydraulic pumps.

    6. On large ice and snow days, if there is serious ice inside the pile body of the roadblock machine, stop lifting and use it after freezing by heating and other methods.

    7. Regularly check the oil level in the oil tank of the anti-collision road blocker. If the oil level is lower than the bottom line, add oil; If the oil becomes dark and turbid, you need to consider changing the oil.

    Whether the road blocker is worn?

    Next, let’s introduce the method to judge whether the anti-collision road blocker is worn.

    Road blocker is a traffic security facility with good characteristics, such as anti-collision, anti-terrorism, anti-rust, corrosion resistance, long service life, etc. It is widely used in government units, nuclear power plants, and other places. The anti-collision roadblock machine can be used together with automatic rising bollards and parking barrier gates or used alone. It is mainly composed of a mainframe, hydraulic transmission station, and electric control system.

    However, when using the anti-collision road blocker machine in life, there may be different degrees of wear. If the hydraulic anti-terrorism road blocker machine has the function of machinery, it will collide, and the collision will inevitably wear. How many manifestations of the wear of the anti-collision road blocker machine? Let’s take a look:

    1. There are three periods of wear of the anti-collision road blocker machine. The running-in period: due to the rough surface of the conflicting pair and the slight error during installation, the flatness of the conflicting pair is poor, the normal load is large and the wear is fast, which also depends on the situation of the conflicting pair itself.

    2. During the normal wear period, if the collision pair cooperates normally, wears normally, and has the minimum wear and collision, the operation time of the anti-collision road blocker machine will be long. If the wear reaches a certain degree, it will enter the limit wear period, and the wear will increase at this time.

    road blocker

    3. If the anti-collision automatic road blocker machine has the function of machinery, there will be a collision. If there is a collision, there will be wear. There is a rule of wear: that is, the volume wear is directly proportional to the relative sliding interval of the collision pair; The yield strength proportional to the normal load is inversely proportional to the hardness.

    On the basis of theory, it is proved by experiments that the correlation between wear rate and impact element is very small. Generally, there is a level difference between impact elements, and there will be three levels of difference in wear rate. Therefore, the change of impact coefficient is not fixed.

    Sharing this: