A municipal road height limiting frame

Abstract

The utility model discloses a municipal road height limiting frame, include: two support seat, support seat inside is established with the cavity, the cavity inside is installed with hydraulic pressure rod, and the top of hydraulic pressure rod is rotatably connected with crossbeam, and support seat front and back are connected with the limiting rod evenly, warning assembly, warning assembly is located at the top of crossbeam, and warning assembly includes: support frame, chain and warning rod, and the top of crossbeam is installed with support frame, and the bottom of support frame is connected with a plurality of chains, and the bottom of chain is connected with warning rod, connecting assembly, connecting assembly is located between two crossbeams, and connecting assembly includes: mounting plate, fixed hole and shearing pin. The utility model realizes through the setting of warning assembly, forms the visual warning of the reflecting strip, the flexible contact early warning of chain and warning rod and the rigid collision grading early warning of crossbeam, and the controllable guide disintegration design that cooperation connecting assembly and crossbeam constitute, has reduced the peak force of instantaneous impact, has lightened the damage degree to vehicle.

Description

Technical Field

[0001] This utility model relates to the field of height restriction frame technology, specifically to municipal road height restriction frames. Background Technology

[0002] Road height restriction barriers are important safety facilities for protecting infrastructure such as bridges, tunnels, and pipelines, as well as maintaining traffic order on specific road sections.

[0003] Traditional fixed height restriction barriers are mostly rigid structures. When an oversized vehicle accidentally collides with them, the rigid beams cannot deform or disintegrate, and the enormous impact energy is absorbed by the vehicle structure instantly. This results in severe deformation of the driver's cab and shearing of the roof, causing injury or death to the driver and passengers. At the same time, the rigid collision between the vehicle and the height restriction barrier is directly transmitted to the pillars and foundation through the rigid beams. This can cause minor issues such as pillar cracking and deformation, and failure of welds or bolts at the connection points. In severe cases, it can uproot the pillars or damage the concrete foundation, resulting in high repair costs and long repair cycles. Although height restriction signs are set in front of the barriers, there is a lack of physical warning barriers. If the driver misses the sign or misjudges the situation, they will collide directly with the rigid structure without any buffer, leaving the driver with no chance to correct the situation at the last moment. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a municipal road height restriction frame, which, through the setting of warning components, forms a visual warning of reflective strips, a flexible contact warning of chains and warning poles, and a graded warning of rigid collision of crossbeams. Combined with the controllable guide disintegration design composed of connecting components and crossbeams, the peak force of instantaneous impact is reduced, and the degree of damage to vehicles is mitigated.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a municipal road height restriction frame, comprising:

[0006] Two support bases, each with an internal cavity, a hydraulic rod installed inside the cavity, a crossbeam rotatably connected to the top of the hydraulic rod, and limit rods connected to both the front and rear of the support bases;

[0007] A warning component is provided on the top of the crossbeam. The warning component includes a support frame, chains, and a warning rod. The support frame is installed on the top of the crossbeam, and multiple chains are connected to the bottom of the support frame. The warning rod is connected to the bottom of the chains.

[0008] A connecting assembly is disposed between the two crossbeams. The connecting assembly includes: a mounting plate, a fixing hole, and a shear pin. The top and bottom of one end of each crossbeam are connected to the mounting plate. The mounting plate has a fixing hole, and a shear pin passes through the fixing hole.

[0009] Furthermore, an equipment box is installed on one side of one of the support bases, and a hydraulic pump is installed inside the equipment box. A hydraulic pipe is connected to one side of the hydraulic pump. The hydraulic pipe is a T-shaped pipe and is connected to two hydraulic rods respectively.

[0010] Furthermore, the multiple chains are evenly arranged in a horizontal direction, and the outer side of each chain is covered with a rubber sleeve.

[0011] Furthermore, the warning bar is a metal bar, and the surface of the warning bar is provided with reflective strips.

[0012] Furthermore, one of the mounting plates has a connecting hole, which is perpendicular to and communicates with the fixing hole. The shear pin has a through hole, and a connecting bolt passes through the connecting hole, with the bottom end of the connecting bolt extending into the through hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By setting up warning components, a visual warning is formed by reflective strips, a flexible contact warning by chains and warning bars, and a graded warning of rigid collisions by crossbeams. Combined with the controllable guide disintegration design composed of connecting components and crossbeams, when the shear pin breaks, the two sections of the crossbeams rotate controllably under the impact force. This rotation process can more effectively dissipate collision energy, reduce the peak force of the instantaneous impact, and reduce the degree of damage to the vehicle. The limit bar physically limits the rotation range of the crossbeams after disintegration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is another schematic diagram of the overall structure of this utility model.

[0017] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the support frame structure of this utility model.

[0019] Figure 5 This is a half-sectional view of the overall structure of this utility model.

[0020] Figure 6 For the present utility model Figure 3 Enlarged view of point A in the image.

[0021] In the diagram: 1. Support base; 101. Hydraulic rod; 102. Limiting rod; 2. Equipment box; 201. Hydraulic pump; 202. Hydraulic pipe; 3. Crossbeam; 301. Support frame; 302. Chain; 303. Warning rod; 4. Mounting plate; 401. Fixing hole; 402. Shear pin; 403. Through hole; 404. Connecting bolt; 405. Connecting hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1 , Figure 2 and Figure 3 As shown, a municipal road height restriction frame includes: two support bases 1, each with a cavity inside, a hydraulic rod 101 installed inside the cavity, a crossbeam 3 rotatably connected to the top of the hydraulic rod 101, and limit rods 102 connected to the front and rear of each support base 1; a warning component, located on the top of the crossbeam 3, comprising: a support frame 301, chains 302, and warning rods 303, the support frame 301 being installed on the top of the crossbeam 3, multiple chains 302 being connected to the bottom of the support frame 301, and warning rods 303 being connected to the bottom of the chains 302; and a connecting component, located between the two crossbeams 3, comprising: a mounting plate 4, fixing holes 401, and shear pins 402, the mounting plate 4 being connected to the top and bottom of one end of the crossbeam 3, the mounting plate 4 having fixing holes 401, and shear pins 402 passing through the fixing holes 401.

[0025] During use, the height restriction frame uses warning components to position and suspend the warning chain 302 and warning bar 303 in front of the rigid crossbeam 3, thus providing layered warning. The connecting components connect the two crossbeams 3, and when subjected to impact forces exceeding the design value, the grooved shear pin 402 is precisely sheared, causing the two crossbeams 3 to separate, thereby protecting the column foundation and the vehicle cab, achieving a fracture-resistant design.

[0026] Reference Figure 3As shown, an equipment box 2 is installed on one side of one of the support bases 1. A hydraulic pump 201 is installed inside the equipment box 2. A hydraulic pipe 202 is connected to one side of the hydraulic pump 201. The hydraulic pipe 202 is a T-shaped pipe and is connected to two hydraulic rods 101 respectively.

[0027] During use, the height restriction frame can raise or lower the crossbeam 3 via the hydraulic rod 101 according to the actual road height restriction requirements, thereby dynamically adjusting the road height restriction requirements. When special vehicles pass, the height of the crossbeam 3 is changed to facilitate their passage. The hydraulic pump 201 and hydraulic pipe 202 ensure the synchronization of the single pump driving the dual cylinders. The structure is simple and reduces leakage points. The hydraulic pipe 202 is pre-embedded under the road and connects to the hydraulic rod 101 on the other side.

[0028] Reference Figure 4 As shown, multiple chains 302 are evenly arranged in a horizontal direction, and rubber sleeves are provided on the outer side of the chains 302. The warning rod 303 is a metal rod, and reflective strips are provided on the surface of the warning rod 303.

[0029] By setting up the chain 302 and the warning bar 303, when an oversized vehicle passes through the height restriction frame, the vehicle first contacts the warning bar 303 or the chain 302, producing a sound, giving the driver a last-minute reminder and a chance to stop. The reflective strip on the warning bar 303 warns the driver to pay attention to the height in advance, and together with the chain 302, provides a clearer sense of obstruction when in physical contact.

[0030] Reference Figure 6 As shown, one of the mounting plates 4 has a connecting hole 405, which is perpendicular to and communicates with the fixing hole 401. The shear pin 402 has a through hole 403, and a connecting bolt 404 passes through the connecting hole 405, with the bottom end of the connecting bolt 404 extending into the through hole 403.

[0031] During the installation of the height restriction frame, one end of each of the two crossbeams 3 is brought close together and aligned, aligning the fixing holes 401 on the upper and lower mounting plates 4 of the crossbeams 3 to form a through channel. Then, the shear pin 402 is inserted into the fixing hole 401, and the through hole 403 is aligned with the connecting hole 405. Next, the connecting bolt 404 is screwed into the connecting hole 405, with its end inserted into the through hole 403 of the shear pin 402. This allows the connecting bolt 404 to restrain the shear pin 402, preventing it from falling out due to vibration. The shear pin 402 normally serves as a connecting bridge between the two crossbeams 3, preventing the crossbeams 3 from being scratched or rotating. When subjected to an impact force exceeding the design value, the shear pin 402 breaks, and the two sections of the crossbeam 3 rotate under the force. During the rotation, the crossbeam 3 transforms from a rigid barrier into a rotating arm that can rotate around its axis. The rotation action can more effectively dissipate the collision energy and provide a relatively smooth pushing process for oversized vehicles, reducing the peak force of the instantaneous impact. By setting the limit rod 102 on the support seat 1, the rotation amplitude of the crossbeam 3 after disintegration is physically limited to prevent its rotation angle from being too large or its movement trajectory from going out of control, ensuring the controllability of the accident scene and reducing the risk of secondary injury to surrounding traffic, facilities and personnel.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A height restriction frame for municipal roads, characterized in that, include: Two support seats (1) are provided. A cavity is provided inside the support seat (1). A hydraulic rod (101) is installed inside the cavity. A crossbeam (3) is rotatably connected to the top of the hydraulic rod (101). Limit rods (102) are connected to the front and rear of the support seat (1). The warning component is located on the top of the crossbeam (3). The warning component includes a support frame (301), a chain (302), and a warning rod (303). The support frame (301) is installed on the top of the crossbeam (3). Multiple chains (302) are connected to the bottom of the support frame (301). The warning rod (303) is connected to the bottom of the chain (302). A connecting component is provided between the two crossbeams (3). The connecting component includes: a mounting plate (4), a fixing hole (401), and a shear pin (402). The top and bottom of one end of the crossbeam (3) are connected to the mounting plate (4). The mounting plate (4) has a fixing hole (401) and a shear pin (402) passes through the fixing hole (401).

2. The municipal road height restriction frame according to claim 1, characterized in that, One of the support bases (1) has an equipment box (2) installed on one side, and a hydraulic pump (201) is installed inside the equipment box (2). A hydraulic pipe (202) is connected to one side of the hydraulic pump (201).

3. The municipal road height restriction frame according to claim 2, characterized in that, The hydraulic pipe (202) is a three-way pipe, and the hydraulic pipe (202) is connected to two hydraulic rods (101) respectively.

4. The municipal road height restriction frame according to claim 1, characterized in that, The multiple chains (302) are evenly arranged in a horizontal direction, and the outer side of each chain (302) is covered with a rubber sleeve.

5. The municipal road height restriction frame according to claim 1, characterized in that, The warning bar (303) is a metal bar, and the surface of the warning bar (303) is provided with reflective strips.

6. The municipal road height restriction frame according to claim 1, characterized in that, One of the mounting plates (4) has a connecting hole (405), and the connecting hole (405) is perpendicular to the fixing hole (401) and communicates with it.

7. The municipal road height restriction frame according to claim 6, characterized in that, The shear pin (402) has a through hole (403), and a connecting bolt (404) passes through the connecting hole (405), with the bottom end of the connecting bolt (404) extending into the through hole (403).

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