Barrier arm of parking lot barrier gate
By combining a rotating rod and a sliding rod with a motor drive, the angle and length of the parking lot barrier arm can be adjusted, which solves the collision risk of traditional barrier arms in emergency situations and reduces damage to vehicles, buildings and people.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN GRP MACHINERY MFG
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional parking lot barrier arms lack the ability to rotate and adjust horizontally and to adapt their length, making it impossible to dynamically adjust their position and length in emergency situations, resulting in a high risk of collision.
The railing structure consists of a rotating rod and a sliding rod. The rotating rod is driven to rotate horizontally by a first driving component, and the sliding rod is driven to slide on the rotating rod by a second driving component. Combined with sensors and a motor, the angle and length of the railing arm can be adjusted, forming a safety mechanism of detection-early warning-adjustment.
By rotating horizontally and contracting its length, the contact area and impact force with vehicles are reduced, thereby minimizing damage to vehicles, buildings, and personnel, and enabling safety warnings and dynamic adjustments.
Smart Images

Figure CN224133606U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of parking equipment technology, specifically a parking lot barrier arm. Background Technology
[0002] In parking management systems, the barrier arm is the core component for controlling vehicle entry and exit. Traditional parking barrier arms typically use a fixed-length, one-piece structure, which can only control passage by vertically swinging in conjunction with the barrier mechanism.
[0003] Traditional guardrail arms lack horizontal rotation adjustment and length self-adjustment capabilities, making it impossible to reduce collision risk in emergency situations by dynamically adjusting their position and length. For example, if a vehicle accidentally runs over the guardrail, fails to brake in time, or the driver makes a mistake, a collision between the guardrail arm and the vehicle can easily damage the vehicle's appearance, surrounding buildings and facilities, and may even pose a threat to pedestrian safety. Utility Model Content
[0004] The purpose of this utility model is to provide a parking lot barrier arm to solve the problem mentioned in the background art that the existing barrier arm adopts a fixed-length integrated structure, which makes it inconvenient to adjust the angle and length.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a parking lot barrier arm, including a connecting seat connected to the barrier and a railing horizontally disposed on the connecting seat. The railing consists of a rotating rod rotatably connected to the connecting seat and a sliding rod slidably connected to the rotating rod. The connecting seat is provided with a first driving member, which is pulsatorically connected to the rotating rod to drive the rotating rod to rotate. The rotating rod is provided with a second driving member, which is pulsatorically connected to the sliding rod to drive the sliding rod to slide on the rotating rod.
[0006] Furthermore, the first driving component includes an L-shaped mounting base disposed at the bottom of the connecting seat and a first motor disposed on the mounting base; the output shaft of the first motor passes through the connecting seat and is connected to the rotating rod.
[0007] Furthermore, the second driving component includes a second motor mounted on a rotating rod, a splined rod connected to the output shaft of the second motor and located within the rotating rod, and a threaded rod cylinder rotatably connected to one end of a sliding rod; the splined rod is located within the threaded rod cylinder and is in sliding engagement with the threaded rod cylinder, and the threaded rod cylinder is in thread engagement with the rotating rod.
[0008] Furthermore, an alarm is provided on the connector.
[0009] Furthermore, a sensor is provided on the rotating rod.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. This utility model uses a first driving component to drive a rotating rod to rotate horizontally (not swing vertically), thereby adjusting the angle of the guardrail arm in the horizontal direction. Simultaneously, a second driving component drives a sliding rod to slide on the rotating rod, allowing the guardrail arm to dynamically shorten its length during horizontal rotation (as shown in Figure 3, in the retracted state). When the sensor detects a vehicle accidentally entering or an emergency, the rotating rod rotates horizontally to adjust its position, and the sliding rod retracts synchronously. This dual action reduces the contact area and impact force with the vehicle, thus reducing damage to vehicles, buildings, and people.
[0012] 2. The sensor on the rotating rod monitors the vehicle's position in real time. When the vehicle distance is detected to be less than the safety threshold, the signal is transmitted to the control board, triggering the alarm on the connector for a warning. At the same time, the first motor and the second motor are controlled to move synchronously: the first motor drives the rotating rod to rotate horizontally to adjust the direction, and the second motor drives the sliding rod to retract through the threaded engagement of the spline rod and the threaded rod cylinder, forming an integrated safety mechanism of "detection-warning-adjustment". Attached Figure Description
[0013] Figure 1 This is a structural diagram of the present invention;
[0014] Figure 2 This is a cross-sectional view of the present invention;
[0015] Figure 3 This is a diagram showing the contracted state of this utility model;
[0016] Figure 4 This is a system flowchart of this utility model.
[0017] In the picture:
[0018] 1. Connecting seat; 2. Rotating rod; 3. Sliding rod; 4. Mounting seat; 5. First motor; 6. Second motor; 7. Splined rod; 8. Threaded rod cylinder; 9. Alarm. Detailed Implementation
[0019] Please see Figures 1 to 4 A parking lot barrier arm is disclosed, used for vehicle entry and exit control to prevent vehicles from accidentally entering the parking lot. The barrier arm consists of a connecting seat 1 and a barrier bar horizontally mounted on the connecting seat 1. The connecting seat 1 is connected to the barrier gate mechanism, allowing the mechanism to drive the connecting seat 1 and the barrier bar to swing vertically, raising and lowering them for vehicle entry and exit. A first driving component is also provided on the connecting seat 1, which drives a rotating rod 2 to rotate horizontally. A second driving component is provided on the rotating rod 2, which drives a sliding rod 3 to slide on the rotating rod 2.
[0020] Specifically,
[0021] The first driving component consists of an L-shaped mounting base 4 fixed to the bottom of the connecting base 1 by bolts or welding, and a first motor 5 mounted on the mounting base 4. One end of the connecting base 1 is rotatably connected to one end of the rotating rod 2 by a bearing or hinge shaft, and the output shaft of the first motor 5 passes through the connecting base 1 and is connected to the rotating rod 2, so that the first motor 5 can drive the rotating rod 2 to rotate.
[0022] The second driving component consists of a second motor 6, a splined rod 7, and a threaded rod cylinder 8. The second motor 6 is embedded in the wall of the rotating rod 2, with its output shaft passing through one end of the rotating rod 2 and located inside the rotating rod 2. The splined rod 7 is connected to the output shaft of the second motor 6 and is also located inside the rotating rod 2. One end of the threaded rod cylinder 8 is rotatably connected to the end of the sliding rod via a bearing, and the other end is located inside the other end of the rotating rod 2 and is provided with a limiting block. The other end of the rotating rod 2 has a constriction that fits with the limiting block, and the outer wall of the threaded rod cylinder 8 is threadedly engaged with the constriction at the other end of the rotating rod 2.
[0023] An alarm 9 is mounted on the connecting base 1, and a sensor (not shown in the figure) is mounted on the rotating rod 2. This sensor is specifically an ultrasonic sensor. Both the alarm 9 and the sensor are secured with bolts or clips. The alarm 9, sensor, first motor 5, and second motor 6 are all connected to the control board of the barrier gate system. The sensor detects vehicles; when a vehicle approaches the barrier arm and exceeds a set threshold, the sensor sends a signal to the control board, which then activates the alarm 9 and simultaneously activates the first motor 5 and the second motor 6.
[0024] Working process and principle of this utility model:
[0025] 1. Initial state: The barrier arm is connected to the gate mechanism via the connecting seat 1. During normal passage, the gate mechanism drives the connecting seat 1 and the barrier to be raised vertically (perpendicular to the ground), the rotating rod 2 extends horizontally, and the sliding rod 3 extends fully (the rotating rod 2 and the sliding rod 3 are collinear, forming a complete barrier, as shown in Figure 1).
[0026] 2. Real-time monitoring and early warning triggering: The sensor on the rotating rod 2 continuously monitors the distance to the vehicle ahead. If a vehicle accidentally runs into the distance or fails to brake in time, the sensor detects that the distance to the vehicle is less than a set threshold and sends a signal to the control main board. The control main board simultaneously activates the alarm 9 on the connector 1, issuing an audible and visual warning. At the same time, it sends action commands to the first motor 5 and the second motor 6.
[0027] 3. Synchronous Adjustment of Horizontal Rotation and Retraction: The first motor 5 starts, driving the rotating rod 2 to rotate horizontally (e.g., clockwise or counterclockwise, adjusting the horizontal position of the guardrail arm to avoid head-on collisions with vehicles). The second motor 6 starts synchronously, and its output shaft drives the spline rod 7 to rotate. Due to the sliding fit between the spline rod 7 and the spline groove on the inner wall of the threaded rod cylinder 8 (allowing axial movement but restricting rotation), the external thread on the outer wall of the threaded rod cylinder 8 meshes with the internal thread at the end of the rotating rod 2. The threaded rod cylinder 8 rotates while moving inward towards the rotating rod 2, pushing the sliding rod 3 to slide and retract axially along the rotating rod 2 (e.g., clockwise or counterclockwise). Figure 3 As shown, the sliding rod 3 is partially retracted into the rotating rod 2.
[0028] 4. Collision Buffering and Reset: If the vehicle makes contact during adjustment, the shortened guardrail arm (sliding rod 3 in its retracted state, as shown in Figure 3) can reduce the rigid impact with the vehicle and reduce harm to surrounding buildings and personnel. After the danger is eliminated, the control board reverses the drive of the first motor 5 and the second motor 6. The first motor 5 drives the rotating rod 2 to rotate horizontally back to its initial position, and the second motor 6 drives the threaded rod cylinder 8 to rotate in the opposite direction, and the sliding rod 3 extends back to its initial length (as shown in Figure 1).
Claims
1. A parking lot barrier arm comprising a connecting seat (1) connected with a barrier, a barrier horizontally arranged on the connecting seat (1), characterized in that, The railing consists of a rotating rod (2) rotatably connected to the connecting seat (1) and a sliding rod (3) slidably connected to the rotating rod (2). The connecting seat (1) is provided with a first driving member, which is connected to the rotating rod (2) for driving the rotating rod (2) to rotate. The rotating rod (2) is provided with a second driving member, which is connected to the sliding rod (3) for driving the sliding rod (3) to slide on the rotating rod (2).
2. A barrier arm for a car park barrier gate as claimed in claim 1, characterised in that, The first driving component includes an L-shaped mounting base (4) located at the bottom of the connecting base (1) and a first motor (5) located on the mounting base (4); the output shaft of the first motor (5) passes through the connecting base (1) and is connected to the rotating rod (2).
3. A parking lot barrier gate arm as defined in claim 1 wherein, The second driving component includes a second motor (6) mounted on the rotating rod (2), a spline rod (7) connected to the output shaft of the second motor (6) and located inside the rotating rod (2), and a threaded rod cylinder (8) rotatably connected to one end of the sliding rod (3); the spline rod (7) is located inside the threaded rod cylinder (8) and slides with the threaded rod cylinder (8), and the threaded rod cylinder (8) is threaded with the rotating rod (2).
4. A parking lot barrier gate arm as defined in claim 1 wherein, An alarm (9) is provided on the connector (1).
5. A parking lot barrier gate arm as defined in claim 1 wherein, A sensor is provided on the rotating rod (2).