A road height and width limiting device
By introducing a buffer groove and spring structure into the height and width limiting device, combined with a motor-driven rotating rod and threaded rod, the baffle can achieve buffering energy absorption and automatic adjustment, solving the problems of device damage and frequent maintenance, and improving safety and maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN QITONG PROJECT OPERATION MANAGEMENT CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-05
AI Technical Summary
Current height and width limiting devices lack a buffer energy absorption mechanism, resulting in rigid collisions between vehicles and barriers, causing damage to both vehicles and devices. Furthermore, the devices are susceptible to dust and impurities, leading to frequent maintenance and increased costs.
It adopts a buffer groove and spring structure, with the baffle sliding on the buffer groove and the spring absorbing kinetic energy. Combined with height and width adjustment components, including a motor-driven rotating rod and a threaded rod, it realizes automatic adjustment and dustproof design through a PLC controller.
It effectively reduces vehicle and equipment damage, lowers maintenance costs, prevents dust from entering the guide rail, and improves the service life and safety of the equipment.
Smart Images
Figure CN224325707U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road height and width restriction technology, and in particular to a road height and width restriction device. Background Technology
[0002] In road traffic management, height and width restriction devices are important facilities to ensure traffic safety on specific road sections and protect roads and surrounding facilities. They are widely used in bridges, tunnels, community entrances and rural roads. Their main function is to restrict the passage of oversized vehicles and prevent safety hazards to road facilities, surrounding buildings and other traffic participants caused by vehicles that are too tall or too wide.
[0003] Existing height and width restriction devices mostly use rigid, fixed height restriction barriers. When a driver collides with the barrier due to misjudgment, obstructed vision, or improper operation, a violent rigid impact occurs due to the lack of an effective energy absorption mechanism. This not only causes severe damage to the front of the vehicle, increasing maintenance costs for the owner, but may also lead to deformation or breakage of the height restriction device itself, requiring frequent repairs or replacements. Furthermore, various dust, impurities, and mud in the outdoor environment can easily enter the sliding rails, causing jamming of threaded rods and other structures, further increasing maintenance costs. To overcome these disadvantages, this utility model provides a road height and width restriction device. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a road height and width restriction device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a road height and width restriction device, comprising a gantry frame, a first sliding groove at the bottom of the gantry frame, and second sliding grooves on both sides of the gantry frame. A support frame is slidably connected to the second sliding groove, a buffer groove is fixedly connected to the support frame, a baffle is slidably connected to the buffer groove, and several springs are fixedly connected to one side of the buffer groove. One end of each spring is fixedly connected to one side of the baffle. A height adjustment component is provided on the first sliding groove, a slide rail is fixedly connected to the bottom of the gantry frame, a slider is slidably connected to the slide rail, a stop block is fixedly connected to the top of the slider, a width adjustment component is provided on the slide rail, and several metal inserts are provided on the slide rail.
[0006] Furthermore, the height adjustment component includes a rotating rod rotatably connected to the first slide groove, a plurality of limiting discs are fixedly connected to the rotating rod, a lifting rope is provided on the rotating rod and located on one side of the limiting discs, a lifting ring is fixedly connected to the top of the buffer groove, the lifting ring and one end of the lifting rope are fixedly connected, and a first power component is provided on one side of the gantry frame.
[0007] Furthermore, the first power assembly includes a first protective cover fixedly connected to one side of the gantry frame, and a first geared motor fixedly connected to one side of the gantry frame and inside the first protective cover. The output end of the first geared motor passes through the gantry frame and is fixedly connected to one end of the rotating rod.
[0008] Furthermore, the width adjustment component includes a bidirectional threaded rod rotatably connected to the slide rail, a threaded hole is provided on one side of the slider, the threaded hole and the bidirectional threaded rod are threadedly connected, and a second power component is provided on one side of the slide rail.
[0009] Furthermore, the second power assembly includes a second protective cover fixedly connected to one side of the slide rail, and a second reduction motor fixedly connected to one side of the slide rail and inside the second protective cover. The output end of the second reduction motor passes through the slide rail and is fixedly connected to one end of a bidirectional threaded rod.
[0010] Furthermore, a control room is fixedly connected to one side of the gantry frame, a PLC controller is fixedly connected inside the control room, and a control panel is fixedly mounted inside the control room and above the PLC controller. The control panel and the PLC controller are electrically connected.
[0011] The beneficial effects of this utility model are:
[0012] In use, this utility model is a road height and width restriction device. When a driver misjudges the height and the car hits the barrier, the barrier slides on the buffer groove and the elastic deformation of the spring absorbs the car's kinetic energy, thus preventing damage to the car and the device. A metal block blocks the groove on the slide rail to prevent dust and impurities from entering the slide rail and causing blockage between the bidirectional threaded rod and the threaded hole. Attached Figure Description
[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific 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.
[0014] Figure 1 : A perspective view of the front right side of this utility model;
[0015] Figure 2 The present utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;
[0016] Figure 3 : Schematic diagram of the internal structure of this utility model.
[0017] The attached figures are labeled as follows:
[0018] 1. Gantry frame; 2. First slide rail; 3. Rotating rod; 4. Limiting plate; 5. Lifting rope; 6. First protective cover; 7. First geared motor; 8. Second slide rail; 9. Support frame; 10. Lifting ring; 11. Buffer groove; 12. Spring; 13. Baffle; 14. Slide rail; 15. Slider; 16. Bidirectional threaded rod; 17. Threaded hole; 19. Second protective cover; 20. Second geared motor; 21. Stop block; 22. Control room; 23. PLC controller; 24. Control panel; 25. Metal insert block. Detailed Implementation
[0019] 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.
[0020] like Figure 1-3 As shown, a road height and width restriction device is disclosed, comprising a gantry frame 1, a first sliding groove 2 at the bottom of the gantry frame 1, and second sliding grooves 8 on both sides of the gantry frame 1. A support frame 9 is slidably connected to the second sliding groove 8, a buffer groove 11 is fixedly connected to the support frame 9, a baffle 13 is slidably connected to the buffer groove 11, and several springs 12 are fixedly connected to one side inside the buffer groove 11. One end of the spring 12 is fixedly connected to one side of the baffle 13. A height adjustment component is provided on the first sliding groove 2. A slide rail 14 is fixedly connected to the bottom of the gantry frame 1, a slider 15 is slidably connected to the slide rail 14, a stop block 21 is fixedly connected to the top of the slider 15, a width adjustment component is provided on the slide rail 14, and several metal inserts 25 are provided on the slide rail 14.
[0021] As shown in the figure, the height adjustment component includes a rotating rod 3 rotatably connected to the first slide 2. Several limiting discs 4 are fixedly connected to the rotating rod 3. A hanging rope 5 is provided on the rotating rod 3 and located on one side of the limiting disc 4. A hanging ring 10 is fixedly connected to the top of the buffer groove 11. One end of the hanging ring 10 and the hanging rope 5 are fixedly connected. A first power component is provided on one side of the gantry frame 1 for adjusting the height through which vehicles can pass.
[0022] As shown in the figure, the first power assembly includes a first protective cover 6 fixedly connected to one side of the gantry frame 1, and a first geared motor 7 fixedly connected to one side of the gantry frame 1 and inside the first protective cover 6. The output end of the first geared motor 7 passes through the gantry frame 1 and is fixedly connected to one end of the rotating rod 3, and is used to provide power for adjusting the height.
[0023] As shown in the figure, the width adjustment component includes a bidirectional threaded rod 16 rotatably connected to the slide rail 14, a threaded hole 17 is provided on one side of the slider 15, and the threaded hole 17 and the bidirectional threaded rod 16 are threadedly connected. A second power component is provided on one side of the slide rail 14 for adjusting the width through which vehicles can pass.
[0024] As shown in the figure, the second power assembly includes a second protective cover 19 fixedly connected to one side of the slide rail 14. A second reduction motor 20 is fixedly connected to one side of the slide rail 14 and inside the second protective cover 19. The output end of the second reduction motor 20 passes through the slide rail 14 and is fixedly connected to one end of the bidirectional threaded rod 16 to provide power for adjusting the width.
[0025] As shown in the figure, a control room 22 is fixedly connected to one side of the gantry frame 1. A PLC controller 23 is fixedly connected inside the control room 22. A control panel 24 is fixedly connected inside the control room 22 and above the PLC controller 23. The control panel 24 and the PLC controller 23 are electrically connected and used to control the equipment on the device.
[0026] Working principle: First, check that the entire device is intact. After inspection, place the device in the limit position, ensuring the top of the slide rail 14 is flush with the ground. Then, power the device. The operator controls the equipment via the control panel 24 using the PLC controller 23. Next, start the first reduction motor 7, causing it to rotate the rotating rod 3, thereby releasing the suspension rope 5 on one side of the limit plate 4, allowing the support frame 9 to slide on the second slide groove 8, moving the baffle 13 to the appropriate height.
[0027] Subsequently, the second reduction motor 20 is started, which drives the bidirectional threaded rod 16 to rotate, causing the slider 15 to slide on the slide rail 14, thereby adjusting the distance between the stops 21. After the adjustment is completed, the slot on the slide rail 14 is inserted into the metal insert 25 to achieve a seal and dust prevention of the slot.
[0028] When a vehicle passes over the gantry 1 at night, the driver may misjudge the height of the baffle 13 because the driver cannot clearly observe the specific height of the baffle 13, causing the top of the vehicle to hit the baffle 13. At this time, the baffle 13 slides backward on the buffer groove 11, compressing the spring 12 and converting the kinetic energy of the car into the elastic potential energy of the spring 12, thereby slowing the car down to a stop. This process not only protects the baffle 13 from damage to the car, but also reduces the degree of damage to the car itself through the elastic deformation of the spring 12.
[0029] 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 any specific implementation. 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 road height and width restriction device, comprising a gantry (1), characterized in that: The gantry frame (1) has a first sliding groove (2) at its bottom end and a second sliding groove (8) on both sides. A support frame (9) is slidably connected to the second sliding groove (8). A buffer groove (11) is fixedly connected to the support frame (9). A baffle (13) is slidably connected to the buffer groove (11). Several springs (12) are fixedly connected to one side inside the buffer groove (11). One end of the spring (12) is fixedly connected to one side of the baffle (13). A height adjustment component is provided on the first sliding groove (2). A slide rail (14) is fixedly connected to the bottom end of the gantry frame (1). A slider (15) is slidably connected to the slide rail (14). A stop block (21) is fixedly connected to the top of the slider (15). A width adjustment component is provided on the slide rail (14). Several metal inserts (25) are provided on the slide rail (14).
2. A road height and width restriction device according to claim 1, characterized in that: The height adjustment assembly includes a rotating rod (3) rotatably connected to the first slide (2), a plurality of limiting discs (4) fixedly connected to the rotating rod (3), a lifting rope (5) provided on the rotating rod (3) and located on one side of the limiting discs (4), a lifting ring (10) fixedly connected to the top of the buffer groove (11), and one end of the lifting ring (10) and the lifting rope (5) fixedly connected, and a first power assembly provided on one side of the gantry (1).
3. A road height and width restriction device according to claim 2, characterized in that: The first power assembly includes a first protective cover (6) fixedly connected to one side of the gantry (1), and a first geared motor (7) fixedly connected to one side of the gantry (1) and inside the first protective cover (6). The output end of the first geared motor (7) passes through the gantry (1) and is fixedly connected to one end of the rotating rod (3).
4. A road height and width restriction device according to claim 1, characterized in that: The width adjustment component includes a bidirectional threaded rod (16) rotatably connected to the slide rail (14), a threaded hole (17) is provided on one side of the slider (15), the threaded hole (17) and the bidirectional threaded rod (16) are threadedly connected, and a second power component is provided on one side of the slide rail (14).
5. A road height and width restriction device according to claim 4, characterized in that: The second power assembly includes a second protective cover (19) fixedly connected to one side of the slide rail (14). A second geared motor (20) is fixedly connected to one side of the slide rail (14) and inside the second protective cover (19). The output end of the second geared motor (20) passes through the slide rail (14) and is fixedly connected to one end of the bidirectional threaded rod (16).
6. A road height and width restriction device according to claim 1, characterized in that: A control room (22) is fixedly connected to one side of the gantry frame (1). A PLC controller (23) is fixedly connected inside the control room (22). A control panel (24) is fixedly connected inside the control room (22) and above the PLC controller (23). The control panel (24) and the PLC controller (23) are electrically connected.