A telescopic straight door with high safety factor

Abstract

The utility model discloses a telescopic straight door with higher safety factor, which comprises a gate body, the gate body comprises a gate machine and a telescopic door, a driving device and a vehicle recognition device are arranged in the gate machine, the driving device is arranged at the rear of the telescopic door to avoid the reciprocating movement of the driving cable inside the door body, and the vehicle recognition device is powered by a 24V voltage wire to prevent the front-end equipment from electric leakage. The utility model discloses a rear-mounted driving device, which avoids the reciprocating wiring and movement of the high-voltage power line inside the telescopic door, eliminates the hidden danger of electrification of the door body caused by the abrasion, bending and damage of the wire from the source, greatly improves the electrical safety of the product, and simultaneously, the vehicle recognition device is powered by a 24V safe voltage, so that even if a circuit fault occurs, a strong electric shock accident endangering personal safety will not occur.

Description

Technical Field

[0001] This utility model belongs to the field of linear gate technology, and in particular relates to a telescopic linear gate with a high safety factor. Background Technology

[0002] Linear sliding gates are widely used in various places due to their excellent traffic control capabilities. Traditional linear gates usually place the drive unit (such as motor and reducer) and vehicle recognition device (such as camera and radar) at the front of the gate. This layout means that the high-voltage power line (usually 220V) required by the drive unit and the data line and power line of the recognition device need to be laid inside multiple sections of the sliding gate and move back and forth with it.

[0003] The traditional solution has significant safety hazards and reliability issues: First, due to the long-term and frequent bending and dragging of the wires inside the door, the insulation layer is prone to fatigue damage, causing the metal parts of the door to become electrified, posing a serious risk of electric shock to passersby. Second, the front-end drive device is directly exposed to the complex outdoor environment, making it more susceptible to damage and inconvenient to maintain, affecting the normal use of the door. To solve the above problems, a telescopic linear door with a higher safety factor is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a telescopic linear gate with a high safety factor, thereby solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a telescopic linear gate with a high safety factor, comprising a gate body, which includes a gate mechanism and a telescopic gate. The gate mechanism is equipped with a drive device and a vehicle identification device. The drive device is located at the rear of the telescopic gate to prevent the drive cable from reciprocating inside the gate. The vehicle identification device is powered by a built-in 24V power supply to ensure a safe voltage supply and prevent the risk of leakage from the front-end equipment.

[0006] Preferably, the driving device includes a motor, an output shaft driven by the motor, and a friction transmission mechanism. The friction transmission mechanism includes an active friction component, a driven friction component, and an elastic clamping component. The active friction component rotates synchronously with the output shaft, and the driven friction component rotates synchronously with the input component of the drive mechanism for the telescopic gate. The elastic clamping component applies axial pressure to the active friction component, causing it to engage with the driven friction component to transmit torque, and can provide overload protection by slipping between the friction components when the transmission system is overloaded.

[0007] Preferably, the transmission mechanism is a chain drive mechanism, including a sprocket and a chain. The driven friction assembly includes a drive shaft and a driven friction plate fixed to one end of the drive shaft. The other end of the drive shaft is fixedly connected to the sprocket. The chain is connected to the fixing part of the telescopic gate to convert the rotational motion of the sprocket into the linear telescopic motion of the telescopic gate.

[0008] Preferably, the active friction assembly includes a flange cylinder and an active friction plate fixedly installed on the circumferential side of the output shaft, wherein the active friction plate and the driven friction plate form a separable friction pair under the action of the elastic clamping assembly.

[0009] Preferably, the elastic clamping assembly includes a spring and a pressure plate. One end of the output shaft is provided with a mounting groove, and a thrust shaft is rotatably provided in the mounting groove. One end of the spring is fixedly connected to the thrust shaft, and the other end of the spring is fixedly connected to the pressure plate. The elastic force of the spring pushes the pressure plate to press the active friction plate. The thrust shaft is designed so that the spring applies clamping force in a stationary state, avoiding the spring from rotating at high speed with the output shaft.

[0010] Preferably, the circumferential side of the inner wall of the flange cylinder is fixedly provided with multiple locking teeth, and the circumferential side of the active friction plate is provided with a locking groove adapted to the locking teeth. The locking groove is sleeved on the locking teeth to realize the circumferential transmission cooperation between the flange cylinder and the active friction plate, while allowing the active friction plate to have axial movement freedom.

[0011] Preferably, the gate is fixedly provided with a mounting base, the motor is fixedly installed in the mounting base, and the gate is also provided with a guide mechanism to limit and guide the telescopic movement of the gate, so as to ensure that the telescopic gate runs smoothly along a preset trajectory.

[0012] Preferably, the vehicle recognition device includes a recognition camera for recognizing license plates and a display screen for displaying vehicle information.

[0013] This utility model has the following beneficial effects: 1. By placing the drive device at the rear, this utility model avoids the reciprocating wiring and movement of high-voltage power lines inside the telescopic gate, eliminating the potential danger of the gate being electrified due to wire wear, bending and damage, and greatly improving the electrical safety of the product. At the same time, the vehicle recognition device is powered by a 24V safe voltage, so even if a line fault occurs, there will be no high-voltage electric shock accident that endangers personal safety. 2. This utility model places the drive device at the rear and fixes it inside the gate, making its working environment more stable, reducing failures caused by external factors such as sun exposure, rain, and collisions, and extending the equipment's lifespan. 3. This utility model is equipped with an overload protection function. Specifically, it is equipped with an active friction plate, a driven friction plate and a spring. When the door movement is obstructed, the active friction plate and the driven friction plate can slip, which effectively prevents the motor from stalling and burning out and the mechanical damage to the transmission components.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the gate mechanism of this utility model; Figure 3 This is a schematic diagram of the rear structure of the gate of this utility model; Figure 4 This is a schematic diagram of the internal structure of the gate of this utility model; Figure 5 This is a schematic diagram of the gate drive mechanism of this utility model; Figure 6 This is a cross-sectional structural schematic diagram of the gate drive mechanism of this utility model; Figure 7 for Figure 3 A magnified schematic diagram of the local structure at point A; Figure 8 for Figure 6 A magnified schematic diagram of the structure at point B in the middle.

[0017] The components represented by each number in the attached diagram are listed below: 1. Turnstile; 2. Telescopic gate; 3. Identification camera; 4. Display screen; 5. Chain; 6. Mounting base; 7. Motor; 8. Drive shaft; 9. Sprocket; 10. Guide mechanism; 11. Flange cylinder; 12. Output shaft; 13. Mounting groove; 14. Thrust shaft; 15. Spring; 16. Pressure plate; 17. Active friction plate; 18. Driven friction plate; 19. Clamping tooth; 20. Clamping groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Please see Figures 1-8 As shown, this utility model is a telescopic linear gate with a high safety factor, including a gate body. The gate body is mainly composed of a rear gate mechanism 1 and a front telescopic gate 2. A mounting base 6 is fixedly installed inside the gate mechanism 1. A motor 7, which serves as a power source, is fixed on the mounting base 6. The entire drive device, including the motor 7, is located at the rear of the telescopic gate 2. At the same time, the vehicle recognition device (including a recognition camera 3 and a display screen 4) located at the front of the gate is powered by a built-in 24V low-voltage wire. This layout avoids the risk of high-voltage power lines moving back and forth, bending and wearing inside the telescopic gate 2 in traditional solutions. By using a safe voltage to power the front-end equipment, the double protection completely eliminates the potential risk of electric shock caused by the gate being electrified. The transmission path of the drive device is as follows: The output shaft 12 of the motor 7 drives the chain transmission mechanism through the friction transmission mechanism, which in turn drives the telescopic gate 2 to move. The friction transmission mechanism is the key to overload protection. It consists of three parts: active friction component, driven friction component and elastic clamping component. The active friction assembly rotates synchronously with the motor output shaft 12. Specifically, the flange cylinder 11 is fixedly installed on the circumferential side of the output shaft 12, and multiple retaining teeth 19 are fixed circumferentially on its inner wall. The active friction plate 17 is provided with a retaining groove 20 that matches the retaining teeth 19 on its circumferential side. Through the sleeve engagement of the retaining groove 20 and the retaining teeth 19, the active friction plate 17 can be circumferentially fixed with the flange cylinder 11 to ensure reliable torque transmission. At the same time, this structure allows the active friction plate 17 to have a degree of freedom of movement in the axial direction, which is a prerequisite for the engagement and disengagement of the friction pair. The driven friction assembly rotates synchronously with the input component of the chain drive mechanism. Specifically, it includes a drive shaft 8, one end of which is fixedly mounted with a driven friction plate 18 by means of key connection or other means, and the other end is fixedly connected to a sprocket 9. The driving friction plate 17 and the driven friction plate 18 together form a pair of separable friction pairs.

[0021] The elastic clamping assembly is the source of the positive pressure required for the friction pair to transmit torque. It includes a spring 15 and a pressure plate 16. The end of the output shaft 12 has a mounting groove 13. A thrust shaft 14 is rotatably mounted in the groove through a bearing. One end of the spring 15 is connected to the thrust shaft 14, and the other end is connected to the pressure plate 16. The elastic force of the spring 15 continuously pushes the pressure plate 16, thereby pressing the active friction plate 17 tightly against the driven friction plate 18. The thrust shaft 14 acts as a stationary force fulcrum, allowing the spring 15 to apply clamping force in a non-rotating, stationary state. This completely avoids the problem of the spring itself failing or being damaged due to centrifugal force when rotating at high speed, ensuring the stability and reliability of the clamping force.

[0022] When the motor 7 starts, the power is transmitted sequentially through the output shaft 12, flange cylinder 11, and active friction plate 17 to the driven friction plate 18 via friction. Then, the sprocket 9 is driven to rotate through the drive shaft 8. When the telescopic gate encounters an obstacle (overload) during operation, the load torque will exceed the maximum static friction between the active and driven friction plates. At this time, the friction plates will slip, thereby cutting off the power transmission and effectively protecting the motor 7 and the entire transmission system from damage.

[0023] The chain drive mechanism includes a sprocket 9 and a chain 5. When the sprocket 9 rotates, it drives the chain 5 that meshes with it to move. The chain 5 is connected to the fixed part of the telescopic gate 2 (such as the connecting part at the bottom or side), thereby converting the rotational motion of the sprocket 9 into the stable linear telescopic motion of the telescopic gate 2.

[0024] To ensure the smooth operation of the telescopic gate 2, a guide mechanism 10 is also installed inside the gate 1. This mechanism is usually composed of a set of guide wheels and guide rails, which precisely limits and guides the telescopic movement of the telescopic gate 2, ensuring that it runs smoothly along the preset trajectory and preventing deviation or jamming.

[0025] Working principle: After the entire system is powered on, the drive unit located at the rear of the gate 1 is connected to the mains power, while the recognition camera 3 and display screen 4 located at the front of the gate are powered by a specially laid 24V safety low-voltage wire. When a vehicle arrives at the gate, the recognition camera 3 collects and processes the license plate information, and the processing results (such as license plate number and passage status) are displayed on the display screen 4. This design removes the high-voltage power line that runs through the inside of the gate in the traditional solution and replaces it with a safe low-voltage line, fundamentally eliminating the possibility of the gate becoming electrified due to damaged wiring. The risk of electric shock; after confirming that the vehicle has the right to pass, the control system starts the motor 7, and the motor output shaft 12 begins to rotate, driving the flange cylinder 11 fixed on it to rotate together. Through the engagement of the retaining teeth 19 on the inner wall of the flange cylinder 11 with the retaining groove 20 on the active friction plate 17, the power is transmitted to the active friction plate 17. At this time, under the action of the spring 15 in the elastic pressing assembly, the pressure plate 16 presses the active friction plate 17 tightly onto the driven friction plate 18 synchronized with the sprocket 9, and the huge friction force generated between the two friction plates acts... The torque is smoothly transmitted to the driven friction plate 18, which in turn drives the sprocket 9 to rotate via the drive shaft 8. When the telescopic gate 2 encounters unforeseen external obstacles (such as obstacles getting stuck or snow accumulation) during operation, causing the load torque to suddenly increase and exceed the maximum friction torque preset between the active and driven friction plates, relative slippage will occur between the two friction plates. Although the motor is still rotating, the power is cut off at this point and cannot continue to be transmitted to the subsequent transmission chain. This slippage phenomenon effectively avoids the motor burning out due to stalling and also protects the mechanical structure such as the chain and sprocket from damage due to overload. The rotational motion of the sprocket 9 is converted into linear motion through the chain 5 meshing with it. The chain 5 is connected to the bottom or side fixed part of the telescopic gate 2, thereby directly driving the telescopic gate 2 to extend (open) or retract (close) the gate. During this process, the guide mechanism 10 (usually composed of guide wheels and guide rails) set inside the gate 1 precisely constrains and guides the movement trajectory of the telescopic gate 2 to ensure that its operation is smooth and straight without deviation or shaking.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A telescopic linear gate with a high safety factor, comprising a gate body, the gate body including a gate mechanism (1) and a telescopic gate (2), characterized in that: The gate (1) is equipped with a drive device and a vehicle identification device. The drive device is located at the rear of the telescopic gate (2) to prevent the drive cable from reciprocating inside the gate. The vehicle identification device is powered by a built-in 24V power supply wire to ensure a safe voltage supply and prevent the risk of leakage from the front-end device.

2. A telescopic linear gate with a high safety factor according to claim 1, characterized in that, The drive device includes a motor (7), an output shaft (12) driven by the motor (7), and a friction transmission mechanism. The friction transmission mechanism includes an active friction component, a driven friction component, and an elastic clamping component. The active friction component rotates synchronously with the output shaft (12), and the driven friction component rotates synchronously with the input component of the transmission mechanism for driving the telescopic gate (2). The elastic clamping component is used to apply axial pressure to the active friction component, so that it frictionally engages with the driven friction component to transmit torque, and can achieve overload protection by slipping between the friction components when the transmission system is overloaded.

3. A telescopic linear gate with a high safety factor according to claim 2, characterized in that, The transmission mechanism is a chain drive mechanism, including a sprocket (9) and a chain (5). The driven friction assembly includes a drive shaft (8) and a driven friction plate (18) fixed to one end of the drive shaft (8). The other end of the drive shaft (8) is fixedly connected to the sprocket (9). The chain (5) is connected to the fixed part of the telescopic gate (2) to convert the rotational motion of the sprocket (9) into the linear telescopic motion of the telescopic gate (2).

4. A telescopic linear gate with a high safety factor according to claim 3, characterized in that, The active friction assembly includes a flange (11) fixedly installed on the circumferential side of the output shaft (12) and an active friction plate (17). The active friction plate (17) and the driven friction plate (18) form a separable friction pair under the action of the elastic clamping assembly.

5. A telescopic linear gate with a high safety factor according to claim 4, characterized in that, The elastic clamping assembly includes a spring (15) and a pressure plate (16). One end of the output shaft (12) is provided with a mounting groove (13). A thrust shaft (14) is rotatably provided in the mounting groove (13). One end of the spring (15) is fixedly connected to the thrust shaft (14), and the other end of the spring (15) is fixedly connected to the pressure plate (16). The elastic force of the spring (15) pushes the pressure plate (16) to press the active friction plate (17). The setting of the thrust shaft (14) allows the spring (15) to apply clamping force in a stationary state, avoiding the spring (15) from rotating at high speed with the output shaft (12).

6. A telescopic linear gate with a high safety factor according to claim 4, characterized in that, The flange cylinder (11) has multiple locking teeth (19) fixedly provided on its inner wall. The active friction plate (17) has a groove (20) adapted to the locking teeth (19) on its outer wall. The groove (20) is sleeved on the locking teeth (19) to realize the circumferential transmission cooperation between the flange cylinder (11) and the active friction plate (17), while allowing the active friction plate (17) to have axial movement freedom.

7. A telescopic linear gate with a high safety factor according to claim 2, characterized in that, The gate (1) is fixedly provided with a mounting base (6), and the motor (7) is fixedly installed in the mounting base (6). The gate (1) is also provided with a guide mechanism (10) to limit and guide the telescopic movement of the telescopic gate (2) to ensure that the telescopic gate (2) runs smoothly along the preset trajectory.

8. A telescopic linear gate with a high safety factor according to claim 1, characterized in that, The vehicle identification device includes a recognition camera (3) for recognizing license plates and a display screen (4) for displaying vehicle information.

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