Height limiting device for roads and bridges

Abstract

The utility model discloses a road bridge height limiting device which comprises a bottom disc, the bottom disc is attached to the road surface, a dismounting mechanism is arranged on the bottom disc, the dismounting mechanism comprises a fixing rod, a fixing sleeve, a clamping mechanism, an ejector rod, a limiting sleeve, a rotating sleeve, a pressing disc, a limiting disc and a positioning mechanism, the fixing rod is installed on the road surface, and the clamping mechanism is installed on the fixing sleeve. The bottom disc is connected to the fixing rod in a sleeving mode, the fixing sleeve is slidably connected to the fixing rod, the clamping mechanism is connected to the fixing rod and the ejector rod in a matched mode, a telescopic hole is formed in the side wall of the fixing sleeve, and a limiting groove is formed between the rotating sleeve and the fixing sleeve and matched with the limiting sleeve. By means of the design, the installation process is greatly simplified, the manpower and material resource cost is reduced, installation of the vertical rods can be rapidly adjusted according to actual requirements, and the flexibility and efficiency of road and bridge height limiting management are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of height limiting devices for roads and bridges, and more specifically, to a height limiting device for roads and bridges. Background Art

[0002] In modern transportation, roads and bridges are indispensable and important infrastructure. In order to ensure driving safety and prevent accidents caused by over-height vehicles hitting bridges, height limit devices are usually installed at both ends of the bridge. However, the current height limit devices have some shortcomings in practical applications. Since different bridges have different height requirements and the heights of vehicles are also different, it is necessary to select a suitable height limit device according to the actual situation. However, most of the existing height limit equipment adopts a fixed installation and cannot flexibly adjust the height. This means that when facing different height requirements, it is necessary to replace height limit devices of different specifications, or perform cumbersome disassembly and debugging, and it is impossible to quickly and conveniently adapt to various height limit occasions.

[0003] The inconvenient installation of existing height limit devices has seriously affected the maintenance efficiency and safety of road bridges. When a bridge needs to be repaired or renovated, the original height limit device may not meet the new height requirements, which requires the replacement or adjustment of the height limit equipment. However, due to the limitations of fixed installation, replacing the height limit device requires a lot of manpower and material resources, which is time-consuming and labor-intensive. It not only prolongs the maintenance period and increases costs, but may also cause unnecessary obstacles to road traffic. In addition, in some special cases, such as sections where vehicle overheight accidents frequently occur, it may be necessary to temporarily increase the height limit, but the existing equipment cannot respond quickly, resulting in safety hazards that cannot be eliminated in time. Therefore, there is an urgent need for a new height limit device that can be easily installed and flexibly adjusted to meet the diverse needs of road bridge height limits and improve road safety and management efficiency. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the utility model provides a height limiting device for a road bridge to solve the technical problems mentioned in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a height limiting device for a road bridge, comprising a bottom plate, the bottom plate is attached to the road surface, the bottom plate is provided with a disassembly mechanism, the disassembly mechanism comprises a fixing rod, a fixing sleeve, a clamping mechanism, a push rod, a limiting sleeve, a rotating sleeve, a pressure plate, a limiting plate and a positioning mechanism, the fixing rod is installed on the road surface, the bottom plate is sleeved on the fixing rod, the fixing sleeve is slidably connected to the fixing rod, the clamping mechanism is cooperatively connected to the fixing rod and the push rod, a telescopic hole is provided on the side wall of the fixing sleeve, the push rod is slidably connected in the telescopic hole, the limiting plate and the pressure plate are respectively installed at two ends of the fixing sleeve, the pressure plate is pressed on the bottom plate, the rotating sleeve is slidably connected to the fixing sleeve, a limiting sleeve is installed on the fixing sleeve, a limiting groove is provided on the rotating sleeve, the limiting groove is clamped on the limiting sleeve, and the positioning mechanism is cooperatively connected to the fixing sleeve.

[0008] The utility model is further configured such that the clamping mechanism includes a round head and a push spring, a plurality of push rods are provided, and each of the push rods is connected to a push spring, and each of the push springs is equipped with a round head, and the design of the clamping mechanism ensures the stability of the clamping.

[0009] The utility model is further configured that a spiral groove is opened on the fixing rod, and the plurality of round heads are respectively abutted in the spiral groove, and the design of the spiral groove and the round head ensures the continuity of the fixing.

[0010] The utility model is further configured that a plurality of anti-slip strips are arranged on the side wall of the rotating sleeve, and the plurality of anti-slip strips are respectively arranged at equal distances. The design of the anti-slip strips avoids sliding during rotation.

[0011] The utility model is further configured that a hexagonal groove is provided in the fixing sleeve, the hexagonal groove and the fixing sleeve are coaxially arranged, and the design of the hexagonal groove ensures the rotation of the fixing sleeve.

[0012] The utility model is further configured that the positioning mechanism includes a positioning sleeve and a positioning rod, the positioning sleeve is coaxially mounted on the fixing sleeve, the positioning rod is mounted on the fixing rod, and the fixing rod is slidably connected to the positioning sleeve, and the design of the positioning mechanism ensures the positioning effect.

[0013] The utility model is further configured that a receiving spring is sleeved on the positioning rod, and push plates are respectively provided at both ends of the receiving spring, and the push plates are respectively abutted in the positioning sleeve and the fixing sleeve. The design of the receiving spring improves the stability of the fixation.

[0014] The utility model is further configured that a vertical rod is provided on the bottom plate, a transverse rod is provided on the vertical rod, and an indicator plate is provided on the transverse rod.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a height limiting device for roads and bridges, which has the following beneficial effects:

[0017] 1. The disassembly mechanism realizes the convenient installation of the height limit device by setting a slidable fixing sleeve between the bottom plate and the fixing rod, and installing the limit plate and the pressure plate at both ends of the fixing sleeve. During installation, it is only necessary to connect the bottom plate to the fixing rod, and then slide the fixing sleeve to a suitable position, so that the pressure plate presses the bottom plate tightly, and the installation is completed. At the same time, a limit groove and a limit sleeve are provided between the rotating sleeve and the fixing sleeve, and the rotating sleeve can be rotated and slid. This design not only greatly simplifies the installation process and reduces the manpower and material costs, but also can quickly adjust the installation of the vertical rod according to actual needs, thereby improving the flexibility and efficiency of the height limit management of roads and bridges.

[0018] 2. The clamping mechanism adopts a coordinated design of a round head and a spiral groove, which further improves the reliability and stability of the height limiting device. By opening a spiral groove on the fixed rod and connecting a push spring equipped with a round head on the push rod, the round head can be clamped into the spiral groove, forming a self-locking clamping structure. During the installation process, when the rotating sleeve moves downward, the push rod and the push spring can be freely extended and retracted, making it convenient for the round head to quickly clamp into the spiral groove; when the rotating sleeve is reset upward, the push rod presses against the inner wall of the rotating sleeve, the push spring is compressed, and the round head is firmly clamped in the spiral groove, realizing reliable fixation of the height limiting device.

[0019] 3. The design of the positioning mechanism further optimizes the installation accuracy and stability of the height limiting device. By coaxially installing the positioning sleeve on the fixed sleeve and arranging a positioning rod on the fixed rod that slides with the positioning sleeve, a positioning structure with high coaxiality and smooth sliding is formed. During the installation process, the positioning rod slides on the fixed rod together with the fixed sleeve, and the guiding effect of the positioning sleeve ensures the coaxiality of the fixed sleeve and the fixed rod, avoiding deflection and jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a height limiting device for roads and bridges in the utility model;

[0021] Figure 2 For the utility model Figure 1 A partial enlarged view of middle A;

[0022] Figure 3 It is a structural schematic diagram of the disassembly mechanism in the utility model;

[0023] Figure 4 It is a schematic diagram of the exploded cross-sectional structure of the disassembly mechanism in the utility model;

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the fixing sleeve in the utility model.

[0025] In the figure: 1. bottom plate; 2. fixing rod; 3. fixing sleeve; 4. top rod; 5. limiting sleeve; 6. rotating sleeve; 7. pressure plate; 8. limiting plate; 9. telescopic hole; 10. limiting groove; 11. round head; 12. push spring; 13. spiral groove; 14. anti-slip strip; 15. hexagonal groove; 16. positioning sleeve; 17. positioning rod; 18. receiving spring; 19. push plate; 20. vertical rod; 21. horizontal rod; 22. indicator plate. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 A height limiting device for a road bridge comprises a bottom plate 1, which is attached to the road surface. A disassembly mechanism is arranged on the bottom plate 1, and the disassembly mechanism comprises a fixing rod 2, a fixing sleeve 3, a clamping mechanism, a push rod 4, a limiting sleeve 5, a rotating sleeve 6, a pressure plate 7, a limiting plate 8 and a positioning mechanism. The fixing rod 2 is installed on the road surface, the bottom plate 1 is sleeved on the fixing rod 2, the fixing sleeve 3 is slidably connected to the fixing rod 2, the clamping mechanism is cooperatively connected to the fixing rod 2 and the push rod 4, a telescopic hole 9 is opened on the side wall of the fixing sleeve 3, the push rod 4 is slidably connected in the telescopic hole 9, the limiting plate 8 and the pressure plate 7 are respectively installed at both ends of the fixing sleeve 3, the pressure plate 7 is pressed on the bottom plate 1, and the rotating sleeve 6 It is slidably connected to the fixed sleeve 3, a limiting sleeve 5 is installed on the fixed sleeve 3, a limiting groove 10 is provided on the rotating sleeve 6, the limiting groove 10 is clamped on the limiting sleeve 5, the positioning mechanism is cooperatively connected to the fixed sleeve 3, the clamping mechanism includes a round head 11 and a push spring 12, a plurality of push rods 4 are provided, and each push rod 4 is connected to a push spring 12, each push spring 12 is installed with a round head 11, a spiral groove 13 is provided on the fixed rod 2, and a plurality of round heads 11 respectively abut against the spiral groove 13, a plurality of anti-slip strips 14 are provided on the side wall of the rotating sleeve 6, and the plurality of anti-slip strips 14 are respectively equidistantly arranged, a hexagonal groove 15 is provided in the fixed sleeve 3, and the hexagonal groove 15 and the fixed sleeve 3 are coaxially arranged.

[0030] The locking cam 12 is then engaged with the locking cam 13 and the locking cam 14, and the locking cam 15 is engaged with the locking cam 16. The locking cam 12 is engaged with the locking cam 16 and the locking cam 14, and the locking cam 15 is engaged with the locking cam 16.

[0031] See also Figures 1 to 4 As an implementation method of a height limiting device for a road bridge for a positioning mechanism: the positioning mechanism includes a positioning sleeve 16 and a positioning rod 17, the positioning sleeve 16 is coaxially installed on the fixed sleeve 3, the positioning rod 17 is installed on the fixed rod 2, the fixed rod 2 is slidably connected to the positioning sleeve 16, and a receiving spring 18 is sleeved on the positioning rod 17. Push plates 19 are respectively provided at both ends of the receiving spring 18. The push plates 19 are respectively in contact with the positioning sleeve 16 and the fixed sleeve 3. A vertical rod 20 is provided on the bottom plate 1, a transverse rod 21 is provided on the vertical rod 20, and an indicator plate 22 is provided on the transverse rod 21.

[0032] More specifically, when the fixing sleeve 3 is slidably connected to the fixing rod 2, the positioning rod 17 is also synchronously slidably connected to the positioning sleeve 16, so it can be effectively fixed, and the receiving spring 18 can effectively avoid the generation of virtual position, thereby ensuring the fixing effect, thereby improving the convenience of use.

[0033] In summary, when the overall equipment is in use or running: when the bottom plate 1 needs to be fixed, first the bottom plate 1 is slidably sleeved on the multiple fixing rods 2, the fixing sleeve 3 is slidably connected to the fixing rod 2, and then the rotating sleeve 6 is moved downward, so that the multiple push rods 4 will not press on the rotating sleeve 6, so the multiple push springs 12 can be extended and retracted at will, so when fixing, the round head 11 does not have to move downward along the spiral groove 13, until the pressure plate 7 is pressed on the bottom plate 1, and then the rotating sleeve 6 is slid upward so that the multiple push rods 4 are against the inner wall of the rotating sleeve 6, thereby ensuring the fixation of the multiple round heads 11, the round heads 11 are pressed on the multiple spiral grooves 13, so the movement of the round heads 11 is limited, and then the limiting groove 10 is stuck on the limiting groove 5, and it can be fixed by clamping the wrench on the rotating sleeve 6 or the hexagonal groove 15, so the distance of the spiral can be greatly reduced, thereby improving the convenience of use.

[0034] When the fixing sleeve 3 is slidably connected to the fixing rod 2, the positioning rod 17 is also synchronously slidably connected to the positioning sleeve 16, so it can be effectively fixed, and the receiving spring 18 can effectively avoid the generation of virtual position, thereby ensuring the fixing effect, thereby improving the convenience of use.

[0035] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A height limiting device for a road bridge, comprising a bottom plate (1), the bottom plate (1) being attached to the road surface, and characterized in that: The bottom plate (1) is provided with a disassembly mechanism, which comprises a fixing rod (2), a fixing sleeve (3), a clamping mechanism, a push rod (4), a limiting sleeve (5), a rotating sleeve (6), a pressure plate (7), a limiting plate (8) and a positioning mechanism. The fixing rod (2) is installed on the road surface, the bottom plate (1) is sleeved on the fixing rod (2), the fixing sleeve (3) is slidably connected to the fixing rod (2), the clamping mechanism is cooperatively connected to the fixing rod (2) and the push rod (4), and the fixing sleeve (3) is A telescopic hole (9) is provided on the side wall, the push rod (4) is slidably connected in the telescopic hole (9), the limit plate (8) and the pressure plate (7) are respectively installed at the two ends of the fixed sleeve (3), the pressure plate (7) is pressed on the bottom plate (1), the rotating sleeve (6) is slidably connected to the fixed sleeve (3), the limit sleeve (5) is installed on the fixed sleeve (3), the limit groove (10) is provided on the rotating sleeve (6), the limit groove (10) is clamped on the limit sleeve (5), and the positioning mechanism is cooperatively connected to the fixed sleeve (3).

2. A height limiting device for roads and bridges according to claim 1, characterized in that: The clamping mechanism comprises a round head (11) and a push spring (12); a plurality of push rods (4) are provided, and each push rod (4) is connected to a push spring (12); and each push spring (12) is installed with a round head (11).

3. A height limiting device for roads and bridges according to claim 2, characterized in that: The fixing rod (2) is provided with a spiral groove (13), and the plurality of round heads (11) are respectively abutted in the spiral grooves (13).

4. A height limiting device for roads and bridges according to claim 3, characterized in that: A plurality of anti-slip strips (14) are provided on the side wall of the rotating sleeve (6), and the plurality of anti-slip strips (14) are arranged at equal distances from each other.

5. A height limiting device for roads and bridges according to claim 4, characterized in that: A hexagonal groove (15) is provided in the fixing sleeve (3), and the hexagonal groove (15) and the fixing sleeve (3) are coaxially arranged.

6. A height limiting device for roads and bridges according to claim 1, characterized in that: The positioning mechanism comprises a positioning sleeve (16) and a positioning rod (17); the positioning sleeve (16) is coaxially mounted on the fixing sleeve (3); the positioning rod (17) is mounted on the fixing rod (2); and the fixing rod (2) is slidably connected to the positioning sleeve (16).

7. A height limiting device for roads and bridges according to claim 6, characterized in that: A receiving spring (18) is sleeved on the positioning rod (17), and push plates (19) are respectively provided at both ends of the receiving spring (18), and the push plates (19) are respectively abutted against the positioning sleeve (16) and the fixing sleeve (3).

8. A height limiting device for roads and bridges according to claim 7, characterized in that: The bottom plate (1) is provided with a vertical rod (20), the vertical rod (20) is provided with a transverse rod (21), and the transverse rod (21) is provided with an indicator plate (22).

Images