Road and bridge height limiter
By designing the road bridge height limiter with frame sets and lifting accessories, the problem that traditional height limiting devices cannot be adjusted is solved, and flexible adjustment of the width and height of the height limiting devices is achieved, which improves applicability and accuracy and reduces costs.
Patent Information
- Application Number
- CN202422490837.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-15
AI Technical Summary
Traditional height limiting devices cannot be adjusted and have low applicability, resulting in increased production and use costs, and need to be remade when changing roads, which cannot be adapted to different road widths.
A road bridge height limiter including a frame set and lifting accessories is designed. The width adjustment of the height limiting device is achieved through a U-shaped pulling plate and locking bolt, and the height adjustment is achieved by combining the drive motor and wire draw rope to ensure the adaptability and accuracy of the device.
It realizes flexible adjustment of the width and height of the height-limiting device, improves adaptability, reduces production and use costs, and enhances the applicability and accuracy of the device.
Smart Images
Figure CN223269131U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of road bridge height limiters, in particular to a road bridge height limiter. Background Art
[0002] A bridge generally refers to a structure built across rivers, lakes, and seas to enable vehicles and pedestrians to pass smoothly. To adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology, or meet other traffic needs to make passage more convenient. Generally, bridges have a specified load-bearing capacity and a limited vehicle height to protect the long-term use of the bridge. Height limiting devices are generally used in locations such as bridges and tunnels where there are restrictions on vehicle height. Their function is to prevent the passage of super-high vehicles, thereby avoiding damage to bridges, tunnels, etc.
[0003] Traditional height limiters cannot be adjusted and can only be used at designated height-limited locations, resulting in low applicability and increased production and use costs. Since road widths vary, height limiter lengths also vary. When replacing a road height limiter, it often needs to be remade due to inappropriate widths, increasing manufacturing costs. Therefore, a road and bridge height limiter is needed to address these issues. Utility Model Content
[0004] The purpose of this utility model is to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A road bridge height limiter includes a frame group, which includes a column. Two U-shaped pull-out plates are connected to the inner side of the top of the column by bolts, and the U-shaped pull-out plates are inserted into the interior of the beam frame through through grooves. A plate group is provided below the beam frame, and a lifting accessory is provided at the top of the beam frame.
[0007] Preferably, a plurality of insertion holes are equidistantly provided at the top of the U-shaped pull-out plate, a locking bolt is inserted through a threaded hole on the side of the top of the beam, and the axial end of the locking bolt is inserted into the insertion hole of the U-shaped pull-out plate. By pulling the U-shaped pull-out plate on both sides of the beam, the U-shaped pull-out plate can move synchronously with the column.
[0008] Preferably, the plate group includes a height limiting plate, which is symmetrically connected to an external plate on both sides of the height limiting plate, and a slider is connected to the outer side of the external plate, the slider is embedded in the inner side of the column through a guide groove, and a fixing bolt is inserted through a threaded hole on the back side of the height limiting plate, and the end of the fixing bolt shaft is in contact with the surface of the external plate, and the external plate is inserted into the through groove of the height limiting plate through the through groove. When the external plate is adjusted, the end of the shaft of the fixing bolt can be in contact with the surface of the external plate for locking, and the slider can be guided by the guide groove of the column so that the slider can move up and down stably.
[0009] Preferably, balls are embedded in ball grooves on both sides of the slider, and the surface of the balls contacts the inner wall of the column guide groove. The slider drives the balls to roll frictionally on the inner wall of the column guide groove to ensure the smoothness of the slider's up and down movement.
[0010] Preferably, a pointer is installed on the left side of the front of the height limit plate, and a scale plate is installed on the inner side of the column at a position corresponding to the pointer. When the height limit plate moves up and down, the height limit plate can drive the pointer to move, and the pointer cooperates with the scale plate to ensure the accuracy of the movement of the height limit plate.
[0011] Preferably, the lifting accessories include a driving motor installed on the top of the beam frame, and the shaft end of the driving motor is connected to a winding roller, a steel wire rope is wound around the height limit plate outside the winding roller, and a lifting ring is connected to the end of the steel wire rope, and the lifting ring is fixed to the top of the height limit plate. The steel wire rope is wound by the winding roller, and the steel wire rope can cooperate with the lifting ring to lift the height limit plate, so as to facilitate the adjustment of the height of the height limit plate.
[0012] Preferably, a shield is installed on the outer side of the top of the beam, and the shield covers the surface of the drive motor. A protective tube is embedded in the through hole at the center of the beam, and protective plates are installed on the front and back sides of the height limit plate. A protective tube is inserted in the through hole of the beam. The protective tube can protect the steel wire rope, reduce the wear of the steel wire rope when it is pulled, and ensure the service life of the steel wire rope.
[0013] The utility model has at least the following beneficial effects:
[0014] 1. The height adjustment of the height limit is achieved by setting up a plate group and lifting accessories. Compared with the traditional structure, this device is connected to an external power supply after the staff arrives at the site, so that the shaft end of the drive motor drives the winding roller to rotate, and the winding roller drives the wire rope to rewind, and then the lifting ring is pulled. The lifting ring can pull up the height limit plate, so that the height limit plate can be adjusted independently according to the limit height, thereby improving the adaptability of the device.
[0015] 2. By setting up a frame group, the overall width of the height limit device can be adapted and adjusted. The device pulls the U-shaped pull-out plate at both ends of the beam frame, so that the column can be moved and adapted to both sides of the road. When the U-shaped pull-out plate is pulled and adjusted, the locking bolt can pass through the beam frame and be inserted into the inside of the U-shaped pull-out plate for locking, so that the overall length of the U-shaped pull-out plate and the beam frame can adapt to the width of the road, further improving the adaptability of the height limit device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 This is a schematic diagram of the external structure of a road and bridge height limiter proposed by the utility model;
[0018] Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of the middle frame assembly of a road and bridge height limiter proposed by the utility model;
[0019] Figure 3 This is a schematic diagram of the three-dimensional disassembled structure of a middle plate group of a road bridge height limiter proposed by the utility model;
[0020] Figure 4 This is a schematic diagram of the partially disassembled structure of a lifting accessory in a road bridge height limiter proposed by the utility model.
[0021] In the figure: 1. Frame assembly; 11. Column; 12. Beam; 13. U-shaped pull-out plate; 14. Locking bolt; 2. Plate assembly; 21. Height limit plate; 22. External plate; 23. Slider; 24. Ball bearing; 25. Fixing bolt; 26. Guard plate; 27. Pointer; 3. Lifting accessories; 31. Lifting ring; 32. Wire rope; 33. Winding roller; 34. Drive motor; 35. Casing; 36. Shield; 4. Scale plate. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0023] Reference Figure 1-4 A road bridge height limiter includes a frame group 1, which includes a column 11. Two U-shaped pull-out plates 13 are connected to the inner side of the top of the column 11 through bolts, and the U-shaped pull-out plates 13 are inserted into the inside of the beam frame 12 through through grooves. A plate group 2 is provided under the beam frame 12, and a pulling accessory 3 is provided at the top of the beam frame 12.
[0024] The top of the U-shaped pull-out plate 13 is provided with a plurality of insertion holes at equal intervals. The top side of the beam 12 is provided with a locking bolt 14 through a threaded hole, and the axial end of the locking bolt 14 is inserted into the insertion hole of the U-shaped pull-out plate 13 .
[0025] The plate group 2 includes a height limiting plate 21, and external plates 22 are symmetrically connected on both sides of the height limiting plate 21, and a slider 23 is connected to the outside of the external plate 22. The slider 23 is embedded in the inner side of the column 11 through a guide groove. A fixing bolt 25 is inserted through a threaded hole on the back side of the height limiting plate 21, and the end of the fixing bolt 25 shaft contacts the surface of the external plate 22. The external plate 22 is inserted into the through groove of the height limiting plate 21 through the through groove.
[0026] Balls 24 are embedded in the ball grooves on both sides of the slider 23 , and the surfaces of the balls 24 are in contact with the inner wall of the guide groove of the column 11 .
[0027] A pointer 27 is installed on the left side of the front of the height limiting plate 21 , and a scale plate 4 is installed on the inner side of the column 11 at a position matching the pointer 27 .
[0028] The lifting accessory 3 includes a driving motor 34 installed at the top of the beam frame 12, and the shaft end of the driving motor 34 is connected to a winding roller 33, and the height limit plate 21 outside the winding roller 33 is wound with a steel wire rope 32, and the end of the steel wire rope 32 is connected to a lifting ring 31, and the lifting ring 31 is fixed to the top of the height limit plate 21.
[0029] A shield 36 is installed on the outer side of the top of the beam 12, and the shield 36 covers the surface of the drive motor 34. A protective tube 35 is inserted into the through hole at the center of the beam 12, and guard plates 26 are installed on both sides of the height limit plate 21.
[0030] By pulling the U-shaped pull-out plate 13 on both sides of the beam 12, the U-shaped pull-out plate 13 can be moved synchronously with the column 11. When the U-shaped pull-out plate 13 is pulled and moved, the axial end of the locking bolt 14 passes through the beam 12 and is inserted into the jack of the U-shaped pull-out plate 13 to ensure the stability of the U-shaped pull-out plate 13 after adjustment. When the column 11 moves, the column 11 can cooperate with the slider 23 to drive the external plate 22 to move in the through groove of the height limiting plate 21. When the external plate 22 is adjusted, the fixing bolt 14 can be fixed. The shaft end of 25 abuts against the surface of the external plate 22 for locking. The slider 23 can be guided by the guide groove of the column 11 so that the slider 23 can move up and down stably. When the slider 23 moves in the guide groove of the column 11, the slider 23 can drive the ball 24 to roll frictionally on the inner wall of the guide groove of the column 11, ensuring that the slider 23 moves up and down smoothly. When the height limit plate 21 moves up and down, the height limit plate 21 can drive the pointer 27 to move. The pointer 27 cooperates with the scale plate 4 to ensure the accuracy of the movement of the height limit plate 21.
[0031] The winding roller 33 is driven to rotate by the shaft end of the driving motor 34, so that the winding roller 33 reels the wire rope 32. The wire rope 32 can cooperate with the lifting ring 31 to lift the height limit plate 21, which is convenient for adjusting the height of the height limit plate 21. The shielding plate 36 covers the surface of the driving motor 34 and the winding roller 33, thereby improving the safety of the winding roller 33 and the driving motor 34. A protective tube 35 is inserted into the through hole of the beam frame 12. The protective tube 35 can protect the wire rope 32, reduce the wear of the wire rope 32 when it is pulled, and ensure the service life of the wire rope 32. A guard plate 26 is set on the outside of the height limit plate 21, and the guard plate 26 can cover and protect the wire rope 32 to avoid direct exposure of the wire rope 32 and affecting the visual effect.
[0032] Working principle: According to the attached Figure 1 With attached Figure 2 As shown, during use, according to the width of the road, the columns 11 on both sides are pulled so that the columns 11 are placed on both sides of the road. At this time, the U-shaped pull-out plate 13 can be moved in the beam frame 12 so that the U-shaped pull-out plate 13 and the beam frame 12 are matched and suspended between the two columns 11. After the adjustment is completed, the locking bolt 14 can be inserted into the U-shaped pull-out plate 13 after passing through the beam frame 12 to lock and fix it. When the column 11 is moved, according to the attached Figure 3 As shown, the column 11 can drive the slider 23 to move, so that the slider 23 drives the external plate 22 to be pulled in the height limiting plate 21, so that the height limiting plate 21 can always be suspended between the two columns 11;
[0033] Secondly, according to the attached Figure 4 As shown, the drive motor 34 is started, and the shaft end of the drive motor 34 can drive the winding roller 33 to rotate, so that the winding roller 33 can wind or unwind the wire rope 32. At this time, the wire rope 32 can pull the lifting ring 31, and the lifting ring 31 can drive the height limit plate 21 to move. The height limit plate 21 can cooperate with the external plate 22 to drive the slider 23 to move, and the slider 23 moves in the guide groove of the column 11, thereby completing the height adjustment of the height limit plate 21.
[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.
Claims
1. A road bridge height limiter, characterized in that: The invention comprises a frame group (1), wherein the frame group (1) comprises a column (11), two U-shaped pull-out plates (13) are connected to the inner side of the top end of the column (11) by bolts, and the U-shaped pull-out plates (13) are inserted into the inside of the beam frame (12) through a through groove, a plate group (2) is arranged below the beam frame (12), and a pulling accessory (3) is arranged at the top end of the beam frame (12).
2. A road bridge height limiter according to claim 1, characterized in that: The top of the U-shaped pull-out plate (13) is provided with a plurality of insertion holes at equal intervals, and the top side of the beam frame (12) is provided with a locking bolt (14) through a threaded hole, and the axial end of the locking bolt (14) is inserted into the insertion hole of the U-shaped pull-out plate (13).
3. A road bridge height limiter according to claim 1, characterized in that: The plate group (2) includes a height limiting plate (21), and external plates (22) are symmetrically connected to both sides of the height limiting plate (21), and a slider (23) is connected to the outside of the external plate (22), and the slider (23) is embedded in the inner side of the column (11) through a guide groove, and a fixing bolt (25) is inserted through a threaded hole on the back side of the height limiting plate (21), and the end of the fixing bolt (25) is in contact with the surface of the external plate (22), and the external plate (22) is inserted into the through groove of the height limiting plate (21) through the through groove.
4. A road bridge height limiter according to claim 3, characterized in that: Balls (24) are embedded in ball grooves on both sides of the slider (23), and the surfaces of the balls (24) are in contact with the inner wall of the guide groove of the column (11).
5. A road bridge height limiter according to claim 3, characterized in that: A pointer (27) is installed on the left side of the front of the height limiting plate (21), and a scale plate (4) is installed on the inner side of the column (11) at a position matching the pointer (27).
6. A road bridge height limiter according to claim 1, characterized in that: The lifting accessory (3) includes a driving motor (34) installed at the top of the beam frame (12), and the shaft end of the driving motor (34) is connected to a winding roller (33), a steel wire rope (32) is wound around the height limit plate (21) outside the winding roller (33), and the end of the steel wire rope (32) is connected to a lifting ring (31), and the lifting ring (31) is fixed to the top of the height limit plate (21).
7. A road bridge height limiter according to claim 6, characterized in that: A shielding plate (36) is installed on the outer side of the top end of the beam frame (12), and the shielding plate (36) covers the surface of the driving motor (34). A protective tube (35) is inserted into the through hole at the center position of the beam frame (12), and guard plates (26) are installed on both sides of the height limit plate (21).