Barrier gate core and barrier gate

Abstract

The utility model discloses a barrier gate core and barrier gate, the barrier gate core includes drive assembly, transmission assembly and link assembly, and drive assembly includes DC brushless motor and the reduction gearbox of DC brushless motor transmission connection, is equipped with hall sensor in DC brushless motor, and the one end of reduction gearbox away from DC brushless motor is equipped with limit component and transmission assembly respectively, and transmission assembly includes connecting rod and joint bearing spare, and the opposite two ends of connecting rod are swing joint with the one end of reduction gearbox and joint bearing spare respectively, and limit component is adjacent connecting rod, and link assembly includes main shaft core, balance arm and tension spring unit, and the opposite two ends of balance arm are swing joint with the other end of joint bearing spare and tension spring unit respectively, and the opposite two ends of main shaft core are swing joint with balance arm and chuck, and the one end of chuck away from main shaft core is connected with barrier gate pole, and the one end of tension spring unit away from balance arm is connected with barrier gate box, and has broken through the bottleneck of control precision, running stability, environmental adaptability and security guarantee etc.

Description

Technical Field

[0001] This utility model relates to the field of barrier gate technology, and in particular to a barrier gate mechanism and a barrier gate. Background Technology

[0002] Existing traditional barrier gate systems suffer from significant technical bottlenecks in terms of reliability, accuracy, and lifespan. Their drive core typically uses an AC 220V motor, which is not speed-adjustable and is prone to overheating and triggering thermal protection under high-temperature, high-frequency boom-and-arm operation, leading to unexpected system shutdowns. To achieve position control, traditional solutions rely on photoelectric limit switches, which are complex to debug and prone to "limit switch slippage" due to mechanical vibration or component wear, making it difficult to guarantee positioning accuracy.

[0003] In terms of transmission structure, traditional gearboxes mostly use a combination of "worm gear + gear". Worm gear transmission is inefficient, and at high speeds, it not only exacerbates wear and heat generation, but also leads to a surge in noise and a shortened overall lifespan. At the same time, its mechanical structure is bulky, usually fixed with a frame plate, which is prone to vibration and deformation during operation, thus causing abnormal noise and transmission errors.

[0004] Furthermore, the inherent control characteristics of AC motors prevent them from directly implementing the critical safety function of obstacle detection and rebound, necessitating the installation of an additional pressure wave sensor. However, this sensor is extremely sensitive to ambient temperature, frequently generating false alarms in areas with large diurnal temperature variations, severely impacting the normal operation and safety of the barrier gate.

[0005] In summary, existing technical solutions have inherent defects in driving, transmission, limit, and safety protection aspects, and there is an urgent need for a new type of barrier gate that is highly integrated, precisely controlled, reliable in operation, and has a longer lifespan. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a barrier gate mechanism and a barrier gate, which aims to solve the technical problems mentioned in the background art.

[0007] A barrier gate mechanism includes a drive assembly, a transmission assembly, and a linkage assembly. The drive assembly includes a brushless DC motor and a gearbox connected to the brushless DC motor. The brushless DC motor is equipped with a Hall sensor. A limit assembly and a transmission assembly are respectively provided at the end of the gearbox away from the brushless DC motor. The transmission assembly includes a connecting rod and a spherical bearing. The two opposite ends of the connecting rod are movably connected to one end of the gearbox and one end of the spherical bearing. The limit assembly is adjacent to the connecting rod. The linkage assembly includes a main shaft, a balance arm, and a tension spring unit. The two opposite ends of the balance arm are respectively connected to the other end of the spherical bearing and the tension spring unit. The two opposite ends of the main shaft are movably connected to the balance arm and a clamp. The end of the clamp away from the main shaft is connected to the barrier gate arm. The end of the tension spring unit away from the balance arm is connected to the barrier gate housing.

[0008] The beneficial effects of this utility model are: By adopting a brushless DC motor as the drive core, the drawbacks of AC motors, such as overheating and lack of speed adjustment, are fundamentally solved, achieving soft start / stop and precise speed control, significantly improving reliability and extending lifespan. The built-in Hall sensor provides real-time closed-loop feedback of the motor rotor position, enabling millimeter-level precision control of the barrier arm and completely eliminating reliance on easily damaged and drifting photoelectric limit panels. The optimized transmission structure and high-strength housing design effectively suppress vibration and noise, ensuring smooth operation. Crucially, the obstacle detection and rebound function based on high-precision current detection can be directly implemented through motor control, eliminating the need for an external pressure wave sensor prone to false alarms, greatly improving safety and adaptability. Combined with mechanical limit components, when the Hall sensor malfunctions or the brushless DC motor fails, physical constraints are applied to the barrier arm's rotation range, providing an additional layer of protection. This integrated design successfully overcomes the technical bottlenecks of traditional barrier gates in terms of control precision, operational stability, environmental adaptability, and safety assurance.

[0009] Furthermore, the top of the gearbox is provided with a base plate, the two opposite ends of the base plate protrude out of the gearbox, the bottom surface of the base plate is fixedly connected to the barrier box, and the top surface of the base plate is provided with bearing seats on opposite sides. The main shaft core is disposed in the two bearing seats through bearings, and the main shaft core is rotatably connected to the bearing seats.

[0010] Furthermore, a waterproof ring is provided between the spindle core and the chuck, and the waterproof ring is fitted onto the spindle core.

[0011] Furthermore, the length from one end of the connecting rod connected to the gearbox to one end of the spherical bearing is less than the length from one end of the main shaft core connected to the balance arm to the other end of the spherical bearing.

[0012] Furthermore, the limiting component includes a first limiting member and a second limiting member, both of which are located on the end face of the output gear pair of the reduction gearbox. The first limiting member or the second limiting member abuts against the connecting rod, and the included angle formed by the first limiting member and the second limiting member is greater than 180° and less than 215°.

[0013] Furthermore, the tension spring unit includes a tension spring rod and several tension springs. The two opposite ends of the tension spring rod are respectively connected to the balance bar and one end of the several tension springs. The end of the tension spring away from the tension spring rod is connected to the barrier gate box.

[0014] Furthermore, the brushless DC motor is equipped with a rocker arm, which is connected to the input shaft of the brushless DC motor.

[0015] This utility model also provides a barrier gate, including the barrier gate mechanism as described above. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the barrier gate mechanism of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the barrier gate mechanism of this utility model. Figure 2 .

[0017] In the diagram: 1. Drive assembly; 11. DC brushless motor; 12. Gearbox; 2. Transmission assembly; 21. Connecting rod; 22. Joint bearing; 3. Linkage assembly; 31. Main spindle core; 32. Balance arm; 33. Tension spring unit; 331. Tension spring rod; 332. Tension spring; 4. Limiting assembly; 41. First limiting component; 42. Second limiting component; 5. Chuck; 6. Base plate; 7. Bearing seat; 8. Waterproof ring; 9. Rocker arm. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] See Figure 1 and Figure 2 A barrier gate mechanism includes a drive assembly 1, a transmission assembly 2, and a linkage assembly 3.

[0022] Specifically, the drive assembly 1 includes a brushless DC motor 11 and a gearbox 12 that is connected to the brushless DC motor 11. The brushless DC motor 11 is equipped with a Hall sensor, and the gearbox 12 is equipped with an input gear pair and an output gear pair. The motor's main shaft 31 is connected to the input gear pair, and the input gear pair is directly connected to the output gear pair. The reduction ratio of the input gear pair is smaller than that of the output gear pair. Compared with the traditional worm gear transmission, this pure gear transmission structure has higher transmission efficiency and longer service life.

[0023] Specifically, a transmission assembly 2 is provided at the end of the gearbox 12 away from the brushless DC motor 11. The transmission assembly 2 includes a connecting rod 21 and a spherical bearing 22. The two opposite ends of the connecting rod 21 are rotatably connected to the output gear pair of the gearbox 12 and one end of the spherical bearing 22, respectively. The other end of the spherical bearing 22 is rotatably connected to the balance arm 32. Through the connecting rod 21 and the spherical bearing 22, the power of the output gear pair of the gearbox 12 is transmitted to the balance arm 32. The two ends of the connecting rod 21 are rotatably connected to the output gear pair of the gearbox 12 and the spherical bearing 22, respectively. With the connection point between the connecting rod 21 and the output gear pair of the gearbox 12 as the center, the connecting rod 21 rotates in a circle, while the spherical bearing 22 and the balance arm 32 form a rotatable connection, thereby obtaining good transmission efficiency.

[0024] Specifically, a limiting component 4 is provided on the end face of the output gear pair of the reduction gearbox 12. The limiting component 4 is adjacent to the connecting rod 21. The limiting component 4 includes a first limiting member 41 and a second limiting member 42. Both the first limiting member 41 and the second limiting member 42 are located on the end face of the output gear pair of the reduction gearbox 12. The first limiting member 41 or the second limiting member 42 abuts against the connecting rod 21. The included angle formed by the first limiting member 41 and the second limiting member 42 is 185°. By providing the first limiting member 41 and the second limiting member 42 on the end face of the output gear pair of the reduction gearbox 12, The length from one end of the connecting rod 21 connected to the gearbox 12 to one end of the joint bearing 22 is less than the length from one end of the main shaft core 31 connected to the balance arm 32 to the other end of the joint bearing 22. Since the linear velocities of these two sections are the same during motion, according to the relationship between angular velocity and linear velocity (when the linear velocity is constant, the angular velocity is inversely proportional to the radius of rotation), by making the length from one end of the connecting rod 21 to one end of the joint bearing 22 shorter, the rotation angle from the end of the main shaft core 31 to the other end of the joint bearing 22 can be made smaller than the rotation angle from the end of the connecting rod 21.

[0025] It should be noted that one end of the connecting rod 21 connected to the reduction gearbox 12 extends to one end of the spherical bearing 22, one end of the main shaft core 31 connected to the balance arm 32 extends to the other end of the spherical bearing 22, and the spherical bearing 22 and the output gear pair of the reduction gearbox 12 extend to the main shaft core 31, forming a crank-rocker mechanism. When the connecting rod 21 rotates clockwise around the end face of the output gear pair of the reduction gearbox 12, the first limiting member 41 limits the raising action of the barrier arm; when the connecting rod 21 rotates counterclockwise around the end face of the gear pair, the second limiting member 42 limits the lowering action of the barrier arm. The first limiting member 41 and the second limiting member 42 limit the rotation angle of the connecting rod 21, thereby avoiding the occurrence of dead points and preventing the barrier arm from unexpectedly falling back after being raised due to continuous unidirectional rotation.

[0026] Specifically, the linkage assembly 3 includes a main shaft core 31, a balance arm 32, and a tension spring 332 unit 33. The two opposite ends of the balance arm 32 are respectively connected to the other end of the joint bearing component 22 and the tension spring 332 unit 33. The two opposite ends of the main shaft core 31 are movably connected to the balance arm 32 and the clamp 5. The end of the clamp 5 away from the main shaft core 31 is connected to the barrier arm. The tension spring 332 unit 33 includes a tension spring 332 rod 331 and multiple tension springs 332. The two opposite ends of the tension spring 332 rod 331 are respectively connected to the balance arm and one end of the multiple tension springs 332. The end of the tension spring 332 away from the rod 331 is connected to the barrier gate box. The joint bearing 22 drives the rotation of the balance arm 32. The connection between the balance arm 32 and the main shaft core 31 serves as the center, and the balance arm 32 rotates in a circle. The lever system composed of the balance arm 32 and the tension spring 332 unit 33 can efficiently transmit power and achieve dynamic balance. The elastic deformation of the tension spring 332 can effectively absorb the impact and vibration when the barrier gate arm is started and stopped, thereby significantly improving the smoothness of operation, reducing the wear of parts, and extending the overall service life of the equipment.

[0027] Specifically, the top of the gearbox 12 is provided with a base plate 6, with opposite ends of the base plate 6 protruding from the gearbox 12. The bottom surface of the base plate 6 is fixedly connected to the barrier gate box, and the top surfaces of the base plate 6 are respectively provided with bearing seats 7. The main shaft core 31 is mounted in the two bearing seats 7 through bearings, and the main shaft core 31 is rotatably connected to the bearing seats 7. This structure fixes the gearbox 12 to the barrier gate box through the base plate 6 and provides span-type bearing support for the main shaft core 31. The fixed connection between the base plate 6 and the two bearing seats 7 forms a high-rigidity stable platform, which not only ensures the concentricity and smoothness of the transmission of the main shaft core 31, but also effectively distributes the load and improves the reliability and durability of the entire transmission system under frequent start and stop.

[0028] Specifically, a waterproof ring 8 is provided between the spindle core 31 and the collet 5. The waterproof ring 8 is fitted onto the spindle core 31, thereby forming a sealed connection between the two and effectively preventing moisture and foreign objects from entering.

[0029] Specifically, the brushless DC motor 11 is equipped with a rocker arm 9, which is connected to the input shaft of the brushless DC motor 11. When the barrier gate box is powered off, the rocker arm 9 is manually cranked to drive the brushless DC motor 11 and the gearbox 12, which in turn drives the connecting rod 21 and the joint bearing 22. Finally, the main shaft core 31 drives the chuck 5 to drive the barrier gate arm to achieve the function of raising or lowering.

[0030] This invention, by employing a DC brushless motor 11 as the drive core, fundamentally solves the problems of AC motors being prone to overheating and lacking speed adjustment, achieving soft start / stop and precise speed regulation, significantly improving reliability and extending lifespan. The built-in Hall sensor provides real-time closed-loop feedback of the motor rotor position, enabling millimeter-level precision in gate arm control and completely eliminating reliance on easily damaged and drifting photoelectric limit panels. The optimized transmission structure and high-strength housing design effectively suppress vibration and noise, ensuring smooth operation. Crucially, the obstacle detection and rebound function based on high-precision current detection can be directly implemented through motor control, eliminating the need for an external pressure wave sensor prone to false alarms, greatly improving safety and adaptability. Combined with the mechanical limit component 4, when the Hall sensor malfunctions or the DC brushless motor 11 fails, physical constraints are applied to the rotation range of the gate arm, providing an additional layer of protection. This integrated design successfully overcomes the technical bottlenecks of traditional gates in terms of control precision, operational stability, environmental adaptability, and safety assurance.

[0031] This utility model also provides a barrier gate, including the barrier gate mechanism as described above.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A barrier gate mechanism, characterized in that: The device includes a drive assembly, a transmission assembly, and a linkage assembly. The drive assembly includes a brushless DC motor and a gearbox that is driven by the brushless DC motor. The brushless DC motor is equipped with a Hall sensor. The gearbox has a limiting assembly and a transmission assembly at the end away from the brushless DC motor. The transmission assembly includes a connecting rod and a spherical bearing. The two opposite ends of the connecting rod are movably connected to one end of the gearbox and one end of the spherical bearing. The limiting assembly is adjacent to the connecting rod. The linkage assembly includes a main shaft, a balance arm, and a tension spring unit. The two opposite ends of the balance arm are movably connected to the other end of the spherical bearing and the tension spring unit. The two opposite ends of the main shaft are movably connected to the balance arm and a clamp. The end of the clamp away from the main shaft is connected to the barrier arm. The end of the tension spring unit away from the balance arm is connected to the barrier box.

2. The barrier gate mechanism according to claim 1, characterized in that: The top of the gearbox is provided with a base plate, and the two opposite ends of the base plate protrude out of the gearbox. The bottom surface of the base plate is fixedly connected to the barrier box. The top surface of the base plate is provided with bearing seats on opposite sides. The main shaft is mounted in the two bearing seats through bearings, and the main shaft is rotatably connected to the bearing seats.

3. The barrier gate mechanism according to claim 2, characterized in that: A waterproof ring is provided between the spindle core and the chuck, and the waterproof ring is fitted onto the spindle core.

4. The barrier gate mechanism according to claim 1, characterized in that: The length from one end of the connecting rod connected to the gearbox to one end of the spherical bearing is less than the length from one end of the main shaft core connected to the balance arm to the other end of the spherical bearing.

5. The barrier gate mechanism according to claim 4, characterized in that: The limiting component includes a first limiting member and a second limiting member. Both the first limiting member and the second limiting member are located on the end face of the output gear pair of the gearbox. The first limiting member or the second limiting member abuts against the connecting rod. The included angle formed by the first limiting member and the second limiting member is greater than 180° and less than 215°.

6. The barrier gate mechanism according to claim 1, characterized in that: The tension spring unit includes a tension spring rod and several tension springs. The two opposite ends of the tension spring rod are movably connected to the balance arm and one end of the several tension springs, respectively. The end of the tension spring away from the tension spring rod is connected to the barrier box.

7. The barrier gate mechanism according to claim 1, characterized in that: The brushless DC motor is equipped with a rocker arm, which is connected to the input shaft of the brushless DC motor.

8. A barrier gate, characterized in that: Includes the barrier gate mechanism as described in any one of claims 1-7.

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