A loading test method for the anti-collision performance of toll gate railings

Abstract

This invention provides a loading test method for the anti-collision performance of toll gates, belonging to the field of testing and inspection technology for electromechanical products in transportation engineering. It solves the problems of low efficiency and poor accuracy in existing devices and methods. This invention connects the clamp of the force-transmitting steel wire rope to the marked part of the toll gate; it securely connects the energized coil counterweight to the force sensor at the other end of the force-transmitting steel wire rope until the distance between the energized coil counterweight and the energized coil force adjustment plate is zero; when the force value is positive, the energized coil counterweight is released; when the pre-applied force value is between 5-10N, the current intensity is stopped from increasing; the mass of the energized coil counterweight and the force sensor is instantaneously applied to the force-transmitting steel wire rope, and the response of the toll gate is observed and recorded. This invention improves the applicability of the equipment, reduces testing costs, and significantly improves the accuracy of the test results. It requires no complex debugging, and the single-test process is more efficient.

Description

Technical Field

[0001] This invention belongs to the field of testing and inspection technology for electromechanical products in transportation engineering, and specifically relates to a loading test method for the anti-collision performance of toll gates. Background Technology

[0002] Toll gates, also known as lane barrier machines, are the core execution equipment of toll highway lane systems, directly affecting the safety, accuracy, and efficiency of lane passage. Their functional reliability and performance stability are key aspects of toll system testing. The impact resistance performance of toll gates is a mandatory item in type testing and factory inspection. The current standard "Toll Gate Barriers" (GB24973-2023) specifies that the impact resistance performance test method and requirements require that a force of 300N applied to the middle of the barrier should immediately redirect it to a horizontal position or allow it to detach from the machine housing. The core of this standard is applying an instantaneous horizontal force of 300N to the middle of the barrier. However, current specifications do not specify testing equipment or test loading devices. In practice, loading methods are inconsistent, and the loading force values ​​are inaccurate, introducing uncertainty into the test results. While pendulum impact loading devices can provide an instantaneous horizontal force of 300N, the relatively long length and flexibility of the barrier machine, combined with the elastic deformation of the lightweight materials used in the barrier, make it difficult to guarantee that the force value converted from the pendulum impulse is accurately 300N.

[0003] To address the aforementioned issues, a loading device and testing method for the anti-collision performance of toll gates have been invented. By utilizing the principle that a fixed pulley can change the direction of the force, the pre-applied horizontal force is converted into the gravity of a vertical counterweight, thereby simplifying the loading method, providing a stable force value, and improving the efficiency and accuracy of testing. Summary of the Invention

[0004] The purpose of this invention is to provide a loading test method for the anti-collision performance of toll gates, so as to solve the problems of low testing efficiency and poor accuracy of existing devices and methods.

[0005] The technical solution of the present invention is: a loading test method for the anti-collision performance of toll gates. The device used in the method includes a loading device control box. A telescopic support rod is fixedly installed on the loading device control box. The telescopic support rod consists of a vertical support rod and a horizontal support rod. An adjustable telescopic device is provided in the middle of the vertical support rod. A fixed pulley force transmission device is fixed below the horizontal support rod. The fixed pulley force transmission device includes a fixed pulley and a force transmission steel wire rope. One end of the force transmission steel wire rope passes through the fixed pulley and is connected to a buckle. The other end is connected in sequence to a force value sensor, an energized coil force adjustment plate, and an energized coil counterweight. It also includes the following steps: Step 1: Install and secure the toll gate machine, place the control box of the gate machine in a horizontal position, mark the loading part in the middle and take necessary protective measures; Step 2: Based on the height and position of the toll barrier being tested, place the loading device control box and connect the clamp of the force transmission steel wire rope to the marked part of the toll barrier being tested. Step 3: Adjust the adjustable telescopic device of the telescopic support rod to keep the horizontal section of the force transmission steel wire rope horizontal, and level the telescopic support rod. Step 4: Securely connect the counterweight block of the energized coil to the force sensor at the other end of the force transmission wire rope, and rotate the counterweight block to tension the force transmission wire rope until the gap between the counterweight block of the energized coil and the force adjustment plate of the energized coil is zero. Step 5: Align the center of the energized coil counterweight with the center hole of the energized coil force adjustment plate, connect the power cord of the energized coil counterweight and the force sensor, turn on the power switch, hold the energized coil counterweight with your hand, adjust the current button to gradually increase the current, so that the initial force value is displayed as negative. Continue to increase the current and slowly decrease the lifting force of your hand. When the force value is positive, release the counterweight of the energized coil. When the pre-applied force value is displayed between 5-10N, stop increasing the current intensity. Step 6: Preload for 5-10 seconds to ensure the loading system is stable. Then, turn off the power and instantly load the mass of the energized coil counterweight and force sensor onto the force transmission steel wire rope. Observe and record the response of the toll gate.

[0006] As a further improvement of the present invention, the energized coil counterweight is a cylindrical detachable magnetic metal block with a bolt hole at the top center and an adjustable screw in the middle. A set of coaxial coils is installed inside the energized coil counterweight and is connected to the loading device control box through a power plug.

[0007] As a further improvement of the present invention, the energized coil force adjustment plate is a circular magnetic metal block, which is fixedly connected to the vertical support rod of the telescopic support rod. The center of the energized coil force adjustment plate has a circular hole with a diameter larger than that of the adjustable screw of the counterweight. A set of coaxial coils is installed inside the energized coil force adjustment plate and connected to the control box of the loading device through wires. The coaxial coil inside the energized coil force adjustment plate and the coaxial coil inside the energized coil counterweight are coaxial when in use.

[0008] As a further improvement of the present invention, the vertical support rod and the horizontal support rod are reinforced by diagonal bracing.

[0009] As a further improvement of the present invention, a self-locking device is provided on the horizontal part of the force transmission wire rope near the fixed pulley.

[0010] As a further improvement of the present invention, the loading device control box has functions of controlling and displaying the current magnitude, displaying the force value, and leveling.

[0011] The beneficial effects of this invention are as follows: This invention utilizes the force conversion principle of a fixed pulley force transmission device to accurately convert the vertical gravity of the energized coil counterweight into a horizontal force acting on the toll gate, avoiding the impulse-force conversion error caused by the flexibility of the gate and the elastic deformation of the material in a pendulum-type device. Combined with real-time monitoring by a force sensor and magnetic adjustment of the energized coil, the initial force value is precisely controlled at 5-10N during the pre-loading stage, and instantaneous loading is achieved after power failure. The force error can be controlled within ±0.5N, with a fluctuation range ≤ ±0.2N, strictly meeting the 300N instantaneous horizontal force detection requirement in the "Toll Gate" standard (GB24973-2023), significantly improving the accuracy of the test results.

[0012] In this invention, the telescopic support rod achieves horizontal section length and height adjustment through an adjustable telescopic device, adapting to different specifications of toll gates; the energized coil counterweight can meet different force value detection requirements without replacing the entire device, thus improving the applicability of the equipment and reducing detection costs.

[0013] In this invention, the telescopic support rod is reinforced by diagonal bracing to ensure that the support rod does not deform or shake during the loading process; a self-locking device is set near the fixed pulley of the force transmission steel wire rope, which automatically locks when the preload force reaches the set value to prevent the steel wire rope from sliding in the opposite direction. Combined with the 5-10s stabilization stage of preload, the stability of the loading system is further guaranteed, and the test data is avoided due to structural instability.

[0014] In this invention, the loading device control box integrates current control, force value display, and leveling functions, making operation intuitive and easy to understand. The coaxial coil design of the energized coil force adjustment plate and the counterweight, combined with the bubble leveling device, can quickly complete centering and leveling, simplifying the test preparation process. Compared with the repeated calibration of the pendulum device, this solution does not require complex debugging, and the single test process is more efficient, making it suitable for batch testing scenarios for type testing and factory inspection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device used in this invention.

[0016] In the diagram: 1-Loading device control box; 2-Electrified coil counterweight; 3-Electrified coil force adjustment plate; 4-Force sensor; 5-Telescopic support rod; 51-Vertical support rod; 52-Horizontal support rod; 53-Diagonal brace; 54-Adjustable telescopic device; 6-Fixed pulley force transmission device; 7-Force transmission steel wire rope; 8-Water bubble leveling device; 9-Snap buckle; 10-Toll gate; 11-Gate machine control box. Detailed Implementation

[0017] The process method of the present invention will be described in detail through specific embodiments. The purpose of the embodiments is to support and explain the claims. Their content is a concretization of the foregoing technical solutions and should be consistent with the content of the technical solutions, but should not be construed as a limitation of the present invention.

[0018] Example 1 The device used in Example 1 includes a loading device control box 1. A telescopic support rod 5 is fixedly installed on the loading device control box 1. The telescopic support rod 5 consists of a vertical support rod 51 and a horizontal support rod 52. An adjustable telescopic device 54 is provided in the middle of the vertical support rod 51. A fixed pulley force transmission device 6 is fixed below the horizontal support rod 52. The fixed pulley force transmission device 6 includes a fixed pulley and a force transmission steel wire rope 7. One end of the force transmission steel wire rope 7 passes through the fixed pulley and is connected to a buckle 9. The other end is connected in sequence to a force value sensor 4, an energized coil force adjustment plate 3, and an energized coil counterweight 2.

[0019] The total mass of the energized coil counterweight 2 (including the adjustable screw) and the sensor is 30.6 kg, equivalent to 300 N; the force sensor 4 is subjected to tensile force during use, and the sensor force value = gravity - magnetic force.

[0020] The horizontal support rod 52 in the telescopic support rod 5 has an adjustable length range of 1-3m, which is suitable for railings with a length of 0.8-6m. The adjustment mechanism in the telescopic support rod 5 can be adjusted by selecting a threaded adjustment sleeve on the vertical support rod 51. Rotating the sleeve can achieve a height adjustment of ±50cm.

[0021] The energized coil counterweight 2 has a built-in coil with 1000 turns and a wire diameter of 0.5mm. The preload of 5-10N corresponds to a current of 0.2-0.5A, ensuring the repeatability of magnetic force adjustment. The counterweight can be increased or decreased, with each weight being 5kg and a maximum combined weight of 30.6kg, thus meeting the needs of detecting different force values ​​such as 200N and 300N. The counterweight incorporates an anti-fall design, with an elastic buffer pad under the energized coil force adjustment plate 3 to prevent the counterweight from impacting the ground when the power is off. The telescopic support rod 5 incorporates an anti-tipping structure, with a weighted base at the bottom weighing ≥20kg. The specific functional parameters of the loading device control box 1 are: current adjustment accuracy of 0.01A, force value display accuracy of 0.1N, and overload alarm function (automatic power-off when the force value exceeds 350N), thereby improving safety and reliability.

[0022] Example 1 uses the following steps: Step 1: Install and secure the toll gate machine, place the gate machine control box 11 in a horizontal position, mark the middle loading part and take necessary protective measures; Step 2: Based on the height and position of the toll barrier 10 to be tested, place the loading device control box 1 and connect the buckle 9 of the force transmission steel wire rope 7 to the marked part of the toll barrier 10 to be tested. Step 3: Adjust the adjustable telescopic device 54 of the telescopic support rod 5 to keep the horizontal section of the force transmission steel wire rope 7 horizontal and level the telescopic support rod 5. Step 4: Securely connect the energized coil counterweight 2 to the force sensor 4 at the other end of the force transmission steel wire rope 7, and rotate the counterweight to tension the force transmission steel wire rope 7 until the gap between the energized coil counterweight 2 and the energized coil force adjustment plate 3 is zero. Step 5: Align the center of the energized coil counterweight 2 with the center hole of the energized coil force adjustment plate 3, connect the power cord of the energized coil counterweight 2 and the force sensor 4, turn on the power switch, hold the energized coil counterweight 2 with your hand, adjust the current button to gradually increase the current, so that the initial force value is displayed as negative. Continue to increase the current and slowly decrease the lifting force of your hand. When the force value is positive, release the counterweight 2 of the energized coil. When the pre-applied force value is between 5-10N, stop increasing the current intensity. Step 6: Preload for 5-10 seconds. After ensuring the loading system is stable, turn off the power. Then, instantly load the mass of the energized coil counterweight 2 and the force sensor 4 onto the force transmission steel wire rope 7. Observe and record the response of the toll gate 10.

[0023] The energized coil counterweight 2 is a cylindrical, detachable, magnetically conductive metal block with a bolt hole at the top center and an adjustable screw in the middle. A set of coaxial coils is installed inside the energized coil counterweight 2, which is connected to the loading device control box 1 via a power plug.

[0024] The energized coil adjusting plate 3 is a circular magnetic metal block, which is fixedly connected to the vertical support rod 51 of the telescopic support rod 5. The center of the energized coil adjusting plate 3 has a circular hole with a diameter larger than that of the adjustable screw of the counterweight. A set of coaxial coils is installed inside the energized coil adjusting plate 3 and connected to the control box 1 of the loading device through wires. The coaxial coil inside the energized coil adjusting plate 3 and the coaxial coil inside the energized coil counterweight 2 are coaxial when in use.

[0025] The vertical support rod 51 and the horizontal support rod 52 are reinforced by the diagonal brace 53. The diagonal brace 53 is specifically connected by bolts to the vertical / horizontal rod in a detachable manner, with an included angle of 60°.

[0026] A self-locking device is installed on the horizontal section of the force transmission wire rope 7 near the fixed pulley. The self-locking device is a pawl-ratchet type to ensure that the pawl locks the ratchet when the wire rope is pulled, preventing reverse slippage. The self-locking device is automatically locked when the preload force reaches 5N.

[0027] The loading device control box 1 has functions for controlling and displaying current magnitude, displaying force magnitude, and leveling.

[0028] To verify the accuracy and stability of the force values ​​of the device and the pendulum device in this embodiment, a force value test was conducted using a 1.5m long aluminum alloy railing. The force values ​​were reached instantaneously during loading, and the test results are shown in Table 1.

[0029] The device and method used in Example 1 were compared with the pendulum device to obtain relevant data. When testing the same 1.5m long aluminum alloy railing, the pendulum device had a force error of ±15N, while the device had an error of ±0.5N, which directly demonstrated the technological advancement of the device and method. When comparing the force fluctuation range within 5-10 seconds of preloading, the device and method used in Example 1 had a fluctuation of no more than ±0.2N, and the force rise time during instantaneous loading reached 300N within 0.1 seconds, further verifying the reliability of the device and method.

[0030] Example 1 utilizes the synergistic effect of technologies such as fixed pulley force transmission conversion, energized coil magnetic preloading, retractable stable support, and self-locking limit to achieve accurate testing of the anti-collision performance of toll gate barriers. Test data shows that the loading force error of this device on a 1.5m long aluminum alloy barrier is only ±0.5N, far superior to the ±15N of a pendulum device; the force fluctuation during the preloading stage is ≤±0.2N, and the instantaneous loading response time is ≤0.1S, fully meeting the requirement of applying a 300N instantaneous horizontal force in the GB24973-2023 standard. Furthermore, this device is adaptable to different barrier specifications and multi-force testing needs, is easy to operate, and has a stable structure. It effectively solves the problems of inconsistent loading methods, large force deviations, and poor adaptability in existing testing methods, providing a reliable and efficient technical means for testing the anti-collision performance of toll gate barriers, and possesses significant practical application value.

Claims

1. A loading test method for the anti-collision performance of toll gate railings, characterized in that: The device used in the method includes a loading device control box (1), on which a telescopic support rod (5) is fixedly installed. The telescopic support rod (5) consists of a vertical support rod (51) and a horizontal support rod (52). An adjustable telescopic device (54) is provided in the middle part of the vertical support rod (51). A fixed pulley force transmission device (6) is fixed below the horizontal support rod (52). The fixed pulley force transmission device (6) includes a fixed pulley and a force transmission steel wire rope (7). The force transmission steel wire rope (7) passes through the fixed pulley and is connected to a buckle (9) at one end. The other end is connected in sequence to a force value sensor (4), an energized coil force adjustment plate (3), and an energized coil counterweight (2). It also includes the following steps: Step 1: Install and fix the toll gate machine, place the gate machine control box (11) in a horizontal position, mark the middle loading part and take necessary protective measures; Step 2: Based on the height and position of the toll gate (10) to be tested, place the loading device control box (1) and connect the buckle (9) of the force transmission steel wire rope (7) to the toll gate (10) to be tested marking part; Step 3: Adjust the adjustable telescopic device (54) of the telescopic support rod (5) to keep the horizontal section of the force transmission steel wire rope (7) horizontal and level the telescopic support rod (5). Step 4: Securely connect the energized coil counterweight (2) to the force sensor (4) at the other end of the force transmission wire rope (7), and rotate the counterweight to tension the force transmission wire rope (7) until the gap between the energized coil counterweight (2) and the energized coil force adjustment plate (3) is zero. Step 5: Align the center of the energized coil counterweight (2) with the center hole of the energized coil force adjustment plate (3), connect the power cord of the energized coil counterweight (2) and the force sensor (4), turn on the power switch, hold the energized coil counterweight (2) with your hand, adjust the current button to gradually increase the current, so that the initial force value is displayed as negative; Continue to increase the current and slowly decrease the lifting force of your hand. When the force value is positive, release the counterweight of the energized coil (2). When the pre-applied force value is displayed between 5-10N, stop increasing the current intensity. Step 6: Preload for 5-10 seconds. After ensuring the loading system is stable, turn off the power and instantly load the mass of the energized coil counterweight (2) and force sensor (4) onto the force transmission steel wire rope (7). Observe and record the response of the toll gate (10).

2. The loading test method for the anti-collision performance of toll gates according to claim 1, characterized in that: The energized coil counterweight (2) is a cylindrical detachable magnetic metal block with a bolt hole at the top center and an adjustable screw in the middle. A set of coaxial coils is installed inside the energized coil counterweight (2) and connected to the loading device control box (1) through a power plug.

3. A loading test method for the anti-collision performance of a toll gate according to claim 1 or 2, characterized in that: The energized coil force adjustment plate (3) is a circular magnetic metal block, which is fixedly connected to the vertical support rod (51) of the telescopic support rod (5). The center of the energized coil force adjustment plate (3) has a circular hole with a diameter larger than that of the adjustable screw of the counterweight. A set of coaxial coils is installed inside the energized coil force adjustment plate (3), which is connected to the loading device control box (1) through wires. The coaxial coil inside the energized coil force adjustment plate (3) and the coaxial coil inside the energized coil counterweight (2) are coaxial when in use.

4. The loading test method for the anti-collision performance of toll gates according to claim 3, characterized in that: The vertical support rod (51) and the horizontal support rod (52) are reinforced by diagonal bracing (53).

5. The loading test method for the anti-collision performance of toll gates according to claim 4, characterized in that: The horizontal section of the force-transmitting wire rope (7) is equipped with a self-locking device near the fixed pulley.

6. The loading test method for the anti-collision performance of toll gates according to claim 1, characterized in that: The loading device control box (1) has functions of controlling and displaying current magnitude, displaying force magnitude, and leveling.

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