A mechanical gate lever anti-smashing device based on gate ground inductance coil triggering

Abstract

A mechanical barrier rod anti-smashing device based on gate ground inductive coil triggering, including ground inductive coil detection unit, barrier rod unit and mechanical anti-smashing control unit, the ground inductive coil detection unit continuously detects the vehicle existing state, and outputs the signal and state monitoring signal for controlling the action of barrier host, the barrier rod unit includes barrier rod, barrier host and control column and bearing column separately arranged on both sides of the lane, the mechanical anti-smashing control unit includes control device arranged in the control column and mechanical support arm, the control device receives the ground inductive coil signal and monitors the barrier rod action, the mechanical support arm is hinged in the control column, and the two states of retraction and ejection are realized through electromagnetic drive mechanism and elastic element, when it is detected that there is a vehicle in the lane and the barrier rod is descending, the control device cuts off the electromagnet current, the mechanical support arm is quickly ejected upward under the action of elastic force, the barrier rod is physically lifted, mechanical interception is formed, and the smashing of the vehicle is effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of mechatronics safety control technology, specifically relating to a mechanical gate arm anti-smashing device based on gate inductive loop triggering. Background Technology

[0002] Inductive loop technology, as a mature and reliable vehicle detection method, has been widely used in various gate control systems. Its basic principle is to form an LC oscillation circuit through an induction coil buried underground. When a metal object passes over or stays above the coil, it causes a change in the coil's inductance, which in turn changes the oscillation state of the circuit and generates an electrical signal. This signal, after processing, can be used to determine the presence, position, and movement status of a vehicle, thereby triggering the gate arm's raising and lowering control. This technology has the advantages of low cost, strong adaptability, and high reliability. It is especially suitable for fixed lanes and occasions requiring long-term stable operation, significantly improving gate throughput efficiency, reducing manual intervention, and lowering operating costs. It is of great significance to modern traffic management and logistics scheduling.

[0003] Although inductive loop technology plays an important role in gate control, it still has significant shortcomings in protecting vehicles from being smashed, especially in large transportation scenarios such as ports, where these shortcomings may lead to serious safety accidents or equipment damage.

[0004] Traditional anti-collision solutions typically rely on inductive loop detectors to detect the presence of a vehicle and then control the motor to reverse or stop the brake arm from falling. However, this method has some inherent drawbacks, such as:

[0005] 1. Response delay problem: The signal processing of the inductive loop needs to go through filtering, debouncing, and logical judgment, which has a certain delay. In the motor control circuit, it takes a certain amount of time from signal detection to execution of the reverse action. If a vehicle suddenly enters or moves quickly, the gate arm may collide due to untimely response.

[0006] Second, the system is highly dependent on reliability: the anti-smashing function is highly dependent on the normal operation of motors, relays, controllers and other electrical components. If the motor torque detection fails, the control module malfunctions or the circuit is interrupted, the reversing mechanism will fail and the gate arm may continue to fall, causing a car-smashing accident.

[0007] 3. Sensitivity to false signals and interference: Inductive loops are susceptible to electromagnetic interference, metal debris or ground vibration, which can generate instantaneous false signals. Such signals may cause the gate arm to rise or fall abnormally, or even trigger the anti-collision reverse mechanism, affecting traffic efficiency and increasing equipment wear. This problem is particularly prominent in the complex environment of ports where multiple vehicles are intertwined and heavy equipment is frequently operating.

[0008] Fourth, lack of redundancy judgment: relying solely on the electrical signal of the ground loop coil for anti-collision judgment lacks multi-sensor collaborative verification. Once the coil is damaged or the signal drifts, the system cannot identify the error in time, which poses a risk of single-point failure.

[0009] In summary, especially in large transportation scenarios such as ports and freight yards, vehicles are large in size, have high inertia, and operate frequently, placing extremely high demands on the safety and response speed of gate systems. However, existing ground loop anti-collision technology, due to its response delay, insufficient system reliability, and limited anti-interference capabilities, can hardly fully meet the application requirements of high intensity and high safety. There is an urgent need for a more robust, faster-responding, and more redundant anti-collision control method to supplement or replace it. Utility Model Content

[0010] To overcome the shortcomings mentioned in the background art, this utility model proposes a mechanical gate arm anti-smashing device based on gate inductive loop triggering. This device combines the vehicle detection capability of the inductive loop with the rapid physical response of the mechanical interception mechanism. Without changing the original inductive loop control logic, an independently operating mechanical anti-smashing unit is introduced to form a dual electrical and mechanical protection mechanism, which significantly improves the real-time performance of the anti-smashing response and the overall robustness of the system.

[0011] The following is a detailed description of this device: A mechanical gate arm anti-smashing device based on gate inductive loop triggering mainly consists of three parts: an inductive loop detection unit, a gate arm unit, and a mechanical anti-smashing control unit.

[0012] The inductive loop detection unit is laid in the roadbed. It continuously detects the changes in electromagnetic induction caused by metal objects above the road and outputs two types of signals. One type is a signal that controls the gate host to lower the barrier to allow or prohibit it. The other type is a status monitoring signal provided to the mechanical anti-collision control unit to determine the vehicle's presence status in real time. This unit forms the basis of the system's perception layer.

[0013] The gate arm unit includes the gate arm itself, the gate machine host that drives the gate arm to rise and fall, and control posts and support posts respectively set on both sides of the lane. One end of the gate arm is connected to the output shaft of the gate machine host, and the other end is a free end. When it falls, it is stationary and supported on the support post to complete the closure of the lane.

[0014] The mechanical anti-smashing control unit, as the core innovation of this utility model, includes a control device and a mechanical support arm. The control device is installed inside or outside the control column and is electrically connected to the ground induction coil detection unit and the gate host. It receives vehicle status signals in real time and monitors whether the gate host is executing the lowering command. The mechanical support arm is driven and connected to the control device and has two working states: a retracted state hidden inside the control column and an interception state that quickly pops up and supports the gate arm below.

[0015] The mechanical support arm is hinged to the control column via a pivot. The control device contains an electromagnetic drive mechanism and an elastic element. The electromagnetic drive mechanism uses a normally closed or de-energized electromagnet, whose coil is controlled by a logic circuit. Under energized conditions, it generates a magnetic force to attract the mechanical support arm and keep it in a retracted state, without affecting the normal raising and lowering of the gate arm. When the logic circuit simultaneously detects a vehicle in the lane indicated by the ground induction coil signal and the gate host is in the lowering action, it immediately cuts off the electromagnet current, the magnetic force disappears, and the mechanical support arm quickly bounces upward around the pivot under the action of the elastic element, entering the interception state. It physically lifts the gate arm and prevents it from falling further, thus avoiding hitting the vehicle.

[0016] The elastic element is usually a torsion spring, which is sleeved on the rotating shaft. One end is fixed to the control column structure, and the other end is supported on the lower part of the mechanical support arm to provide elastic force. To further mitigate the impact, a buffer pad made of rubber or polyurethane material is embedded at the top of the mechanical support arm to effectively protect the gate arm structure during interception.

[0017] The practicality of this device is reflected in many aspects. Its response mechanism is entirely based on mechanical action and power failure triggering. The response speed is much higher than that of electrical anti-collision methods that require logical processing and motor reversal. There is almost no delay, which greatly reduces the collision risk of high-speed vehicles. The triggering of the mechanical support arm does not rely on motor torque detection or complex control circuits. Even in extreme cases such as gate host control failure or circuit failure, it can still independently achieve the anti-collision function. The system redundancy and reliability are significantly improved. In addition to directly controlling the gate host, the ground induction coil signal is also used as a status monitoring signal input to the mechanical anti-collision control unit. After secondary analysis and anomaly judgment by the internal signal processing unit, such as identifying abnormal conditions such as vehicles being stationary for a long time, the control device can continuously send the lifting and holding signal and put the mechanical unit into a pre-trigger state, further enhancing the ability to cope with complex working conditions.

[0018] Beneficial effects:

[0019] In summary, the advantages of the mechanical gate arm anti-collision device described in this utility model lie in its construction of a redundant anti-collision system that is responsive, safe, reliable, and independent of the normal operation of electrical actuators. It is particularly suitable for situations with high vehicle traffic, mixed vehicle types, and complex operating environments, such as ports, highway toll stations, logistics hubs, and large parking lots. Its mechanical triggering mechanism effectively overcomes the delay and single-point failure risk of traditional purely electrical anti-collision schemes, thereby reducing traffic interruptions, dispute resolution, and equipment maintenance costs caused by vehicle collisions. At the same time, the device is compatible with existing ground loop coil control systems, making modification simple, cost-controllable, and easy to promote and deploy. Ultimately, it will help improve the overall gate management efficiency and enhance the level of safe operation. Attached Figure Description

[0020] Figure 1This is a schematic diagram of a gate opening for a mechanical gate arm anti-smashing device triggered by a gate inductive loop.

[0021] Figure 2 This is a schematic diagram of a vehicle passing through a gate normally using a mechanical gate arm anti-smashing device triggered by a gate inductive loop.

[0022] Figure 3 This is a schematic diagram of the activation of a mechanical gate arm anti-collision device based on a gate inductive loop trigger.

[0023] In the diagram, 1 is the inductive loop detection unit, 2 is the gate arm, 3 is the mechanical anti-smashing control unit, 4 is the truck, 5 is the fully raised gate arm, 6 is the gate arm that has been accidentally lowered, and 7 is the anti-smashing device that has been raised. Detailed Implementation

[0024] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0025] 1. Inductive loop detection unit; 2. Gate arm; 3. Mechanical anti-smashing control unit; 4. Truck; 5. Gate arm fully raised; 6. Gate arm unexpectedly lowered; 7. Anti-smashing device raised.

[0026] like Figure 1 , 2 As shown, the inductive loop detection unit 1 is laid in the roadbed. It continuously detects the presence of vehicles by sensing changes in the electromagnetic properties of metal objects above the road. The unit outputs two types of signals: one is a signal that directly controls the gate host to allow or prohibit the lowering of the gate, and the other is a status monitoring signal provided to the mechanical anti-collision control unit 3 to assist in judging the real-time status of the vehicle.

[0027] The gate arm unit 2 includes gate arm 2, gate machine host, control column and support column. One end of gate arm 2 is connected to the output shaft of the gate machine host, and the other end is a free end. When the arm is lowered, it is placed statically on the support column. The control column and the support column are respectively set on both sides of the lane, which together constitute the support structure of gate arm 2.

[0028] The mechanical anti-smashing control unit 3 includes a control device and a mechanical support arm. The control device is installed inside or on the side of the control column and is electrically connected to the ground inductive coil detection unit 1 and the gate host. The device receives the status monitoring signal from the ground inductive coil detection unit 1 and monitors in real time whether the gate host is performing the lowering action. The mechanical support arm is hinged inside the control column through a pivot and has two states: a retracted state and an interception state in which it pops up and supports the gate arm 2.

[0029] When the mechanical support arm is retracted, it is placed parallel to the inner wall of the control column. It is hinged to the lower inner side of the control column via a pivot. When it is extended, it rotates upward about 80-90 degrees around the pivot, so that its arm body is approximately vertical below the gate arm 2.

[0030] The control device is equipped with an electromagnetic drive mechanism and an elastic element. The electromagnetic drive mechanism adopts a normally closed or power-off release type electromagnet, and its coil is connected to the logic circuit. In the energized state, the electromagnet generates magnetic force to attract the mechanical support arm and keep it in the retracted state. The elastic element is sleeved on the rotating shaft, with one end fixed to the inner wall of the control column and the other end supporting the lower part of the mechanical support arm.

[0031] like Figure 3 As shown, when the logic circuit simultaneously detects that the inductive loop detection unit 1 indicates the presence of a vehicle in the lane and the gate host is in the lowering action, it immediately cuts off the current to the electromagnet coil. After the magnetic force disappears, the mechanical support arm quickly rotates upward under the action of the elastic element, enters the blocking state, and lifts the gate arm 2 from below to prevent it from falling further.

[0032] The top of the mechanical support arm is fitted with a buffer pad made of rubber or polyurethane material to mitigate impact during interception and protect the gate arm structure 2.

[0033] The control device is also equipped with a signal processing unit, which is used to process the continuous sensing signal sent by the ground induction coil detection unit 1. This unit can determine whether the vehicle is in an abnormal state of long-term stagnation. If it is determined to be abnormal, the control device will continuously send the gate host a gate lifting and holding signal, and at the same time put the mechanical anti-smashing control unit 3 into a pre-trigger state to improve the response speed.

[0034] The lowering bar permission or prohibition signal generated by the ground induction coil detection unit 1 directly controls the action of the gate host, while the status monitoring signal is input to the mechanical anti-collision control unit 3 as one of the important bases for its logical judgment.

[0035] This invention achieves a rapid response and highly reliable gate arm anti-smashing mechanism by combining electrical control with mechanical execution. This device is particularly suitable for occasions with frequent vehicle traffic and high safety requirements, such as ports, toll stations, and logistics parks.

[0036] Implementation example:

[0037] like Figure 1 , 2 As shown, when a vehicle approaches the gate and triggers the ground loop detection unit 1, the unit detects the presence of the vehicle and sends a lowering prohibition signal to the gate host, while simultaneously sending a status monitoring signal to the mechanical anti-collision control unit 3. After receiving the signal, the gate host keeps the gate arm 2 in a fully raised state, allowing the truck 4 to pass.

[0038] like Figure 3 As shown, assuming that before the truck 4 has completely passed through the gate, due to system misjudgment or control failure, the gate host erroneously begins to execute the lowering action, and at this time the unexpectedly lowered gate arm 6 begins to fall.

[0039] The logic circuit in the mechanical anti-smashing control unit 3 monitors the ground induction coil signal and the gate host status in real time. When a vehicle is detected in the lane at the same time and the gate arm 2 is descending, the current of the electromagnetic drive mechanism is immediately cut off. The mechanical support arm quickly bounces up under the action of the elastic element and enters the interception state, physically supporting the gate arm 2 to prevent it from hitting the truck 4.

[0040] During the interception process, the buffer pad at the top of the mechanical support arm effectively mitigates the impact and prevents damage to the gate arm 2. After the truck 4 has completely passed, the signal of the ground inductive loop detection unit 1 returns to normal, the gate host re-controls the gate arm 2 to rise, and at the same time the electromagnetic drive mechanism is re-energized, pulling the mechanical support arm back into the control column, and the device returns to standby status.

[0041] If a vehicle remains stationary above the inductive loop for an extended period of time, the signal processing unit will determine it as an abnormal state. The control device will continuously send a raising signal and keep the mechanical unit in a pre-triggered state to ensure that any unexpected lowering of the gate can be prevented immediately.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanical gate arm anti-smashing device based on gate inductive loop triggering, characterized in that, include: Ground inductive loop detection unit, gate arm unit, and mechanical anti-collision control unit; The inductive loop detection unit is laid under the lane to continuously detect the presence of vehicles in the lane and generate signals to control the gate host to allow or prohibit the lowering of the gate, as well as status monitoring signals to be provided to the mechanical anti-collision control unit. The gate arm unit includes a gate arm, a gate machine host for driving the gate arm to rise and fall, and control posts and support posts opposite each other on both sides of the lane; One end of the gate arm is connected to the output shaft of the gate machine host, and its free end rests on the support column when it falls. The aforementioned mechanical anti-smashing control unit includes a control device and a mechanical support arm; The control device is located inside or to the side of the control column and is electrically connected to the ground inductive coil detection unit and the gate host. It receives the signal from the ground inductive coil detection unit and monitors whether the gate host is performing the lowering action. The mechanical support arm is driven and connected to the control device, and has two states: a retracted state where it is placed in the control column and an interception state where it pops up and is supported under the gate arm.

2. The mechanical gate arm anti-smashing device based on gate inductive loop triggering according to claim 1, characterized in that, The mechanical support arm is hinged to the control column via a pivot. The control device includes an electromagnetic drive mechanism. When energized, the electromagnetic drive mechanism generates a magnetic force to attract the mechanical support arm and keep it in a retracted state. When de-energized, the magnetic force disappears, and the mechanical support arm rotates upward around the pivot under the drive of the elastic element and pops out to the interception state.

3. The mechanical gate arm anti-smashing device based on gate inductive loop triggering according to claim 2, characterized in that, The elastic element is sleeved on the rotating shaft, with one end fixed to the control column and the other end supporting the lower part of the mechanical support arm.

4. A mechanical gate arm anti-smashing device based on gate inductive loop triggering, as described in any one of claims 2 or 3, characterized in that, The electromagnetic drive mechanism is a normally closed electromagnet or a power-off release electromagnet, and its coil is connected to the logic circuit of the control device.

5. A mechanical gate arm anti-smashing device based on gate inductive loop triggering according to claim 4, characterized in that, The logic circuit is configured to cut off the current to the electromagnet coil only when the signal from the inductive loop detection unit indicates that there is a vehicle in the lane and the gate controller is simultaneously performing a lowering action.

6. A mechanical gate arm anti-smashing device based on gate inductive loop triggering according to claim 1, characterized in that, The top of the mechanical support arm is fitted with a buffer pad, which is made of rubber or polyurethane material.

7. A mechanical gate arm anti-smashing device based on gate inductive loop triggering according to claim 1, characterized in that, The control device also includes a signal processing unit, which processes the continuous sensing signal sent by the ground induction coil detection unit and determines whether the vehicle is in an abnormal state of prolonged stagnation.

8. A mechanical gate arm anti-smashing device based on gate inductive loop triggering according to claim 7, characterized in that, When the signal processing unit determines that the vehicle is in an abnormal state of prolonged stagnation, the control device continuously sends a gate lifting and holding signal to the gate host, and at the same time puts the mechanical anti-collision control unit into a pre-trigger state.

9. A mechanical gate arm anti-smashing device based on gate inductive loop triggering according to claim 1, characterized in that, The signal generated by the ground inductive loop detection unit to allow or prohibit the lowering of the gate directly controls the action of the gate host. The generated status monitoring signal is provided to the mechanical anti-collision control unit as one of the important bases for the mechanical anti-collision control unit to make logical judgments.

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