CN112681180A - Road height limiting frame - Google Patents
Road height limiting frame Download PDFInfo
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- CN112681180A CN112681180A CN202011595322.7A CN202011595322A CN112681180A CN 112681180 A CN112681180 A CN 112681180A CN 202011595322 A CN202011595322 A CN 202011595322A CN 112681180 A CN112681180 A CN 112681180A
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Abstract
The application relates to a road height limiting frame, which relates to the field of road height limiting technology and comprises a first height limiting frame fixed on a roadbed, wherein a second height limiting frame is arranged on the roadbed in a sliding manner; a telescopic device is connected between the first height limiting frame and the second height limiting frame; both sides of the roadbed are provided with slideways; the slideway is arranged along the length direction of the roadbed; the second height limiting frame comprises upright columns which are respectively arranged in the two slideways in a sliding manner, and a cross beam which is connected with the upper ends of the two upright columns; a buffering air bag is arranged on one side, away from the first height limiting frame, of the cross beam; and a first skidding device for driving wheels of the vehicle to idle is arranged on the roadbed and close to the second height limiting frame. This application has the effect that reduces the impact that vehicle striking limit for height frame brought.
Description
Technical Field
The application relates to the field of road height limit technology, in particular to a road height limit frame.
Background
At present, the height limiting frame is generally divided into a fixed height limiting frame and an adjustable height limiting frame. The fixed height limiting frame is divided into a fixed integral height limiting frame and a fixed collision-proof height limiting frame. The fixed integrated height limiting frame is a disposable height-adjustable height limiting frame, a leaning frame intercepts vehicles, and the fixed type height limiting frame cannot be damaged and must be lifted by external force in case of emergency, such as a crane and the like; fixed integrative limit for height frame mainly used bridge, culvert, the portal frame of tunnel entrance, generally for the steel construction welding forms, play the effect of protection bridge, culvert, tunnel.
The invention discloses a road height limiting frame with the publication number of CN107016853A, wherein a hydraulic lifting device is mounted on the upper portion of a base, the upper portion of the hydraulic lifting device is connected with vertical rods, a height limiting rod is welded with the tops of the vertical rods on the left side and the right side, a camera is mounted on the right side of the height limiting rod, a networking alarm device is mounted in the middle of the height limiting rod, a vibration sensor is mounted on one side of the networking alarm device, the vibration sensor is connected with the networking alarm device through a controller, a rubber pad is mounted on the bottom surface of the height limiting rod, and anti-collision angle iron is mounted on.
In view of the above-mentioned related technologies, the inventor believes that the height limiting rod is welded to the vertical rods on the left and right sides, and when the height limiting frame is not noticed by the vehicle, the vehicle is likely to collide directly, and the vehicle cannot be stopped in time, so that the vehicle is likely to collide and be damaged.
Disclosure of Invention
In order to reduce the impact that the vehicle striking height limit was put up and is brought, this application provides a road height limit frame.
The application provides a road limit for height frame adopts following technical scheme:
a road height limiting frame comprises a first height limiting frame fixed on a road bed, wherein a second height limiting frame is arranged on the road bed in a sliding manner; a telescopic device is connected between the first height limiting frame and the second height limiting frame; both sides of the roadbed are provided with slideways; the slideway is arranged along the length direction of the roadbed; the second height limiting frame comprises upright columns which are respectively arranged in the two slideways in a sliding manner, and a cross beam which is connected with the upper ends of the two upright columns; a buffering air bag is arranged on one side, away from the first height limiting frame, of the cross beam; and a first skidding device for driving wheels of the vehicle to idle is arranged on the roadbed and close to the second height limiting frame.
Through adopting above-mentioned technical scheme, when the vehicle that surpasss road limit for height frame traveles to this position, the front end of vehicle can extrude buffering gasbag, can improve the protection to the vehicle through buffering gasbag for super high vehicle is difficult for taking place to damage. If the vehicle continues to travel, convert the impact force into telescoping device and shorten the displacement, the second limit for height frame can slide a section distance along the slide to can further reduce the impact to the vehicle. The first slipping device is arranged, so that wheels of the vehicle can slip when the vehicle runs to the second height limiting frame limit position, and the protection of the vehicle is further enhanced.
Preferably, the roadbed is provided with a first mounting groove, and the length direction of the first mounting groove is vertical to that of the roadbed; two sides of the first mounting groove are provided with first placing grooves; the first sliding device comprises a first driving roller which is rotatably arranged in the first mounting groove; the length direction of the first driving roller is consistent with that of the first mounting groove; a first cover plate is arranged in the first placing groove and is arranged above the first transmission roller in a covering mode; be provided with in the road bed and be used for driving the first apron to withdraw to the unblock subassembly in the first standing groove.
Through adopting above-mentioned technical scheme, when vehicle device to buffering gasbag, can drive the unblock subassembly, make the first apron of unblock subassembly drive retract to first standing groove in, thereby can make first drive roll expose, when the vehicle continues to travel, can make the vehicle press on first drive roll, because first drive roll is for rotating the setting, can make the wheel take place to skid, thereby can prevent that the vehicle from continuing to travel, the super high vehicle of restriction passes through, the impact that has reduced the vehicle simultaneously and strengthened the protection effect to road limit for height frame.
Preferably, both ends of the first mounting groove are provided with limiting grooves; the length direction of the limiting groove is consistent with the length direction of the roadbed; the unlocking assembly comprises a limiting plate arranged at the end part of the first cover plate and a limiting spring for connecting the limiting plate and the wall of the limiting groove; an inflatable air bag is arranged between the two limiting plates; a first connecting hole is formed in one side, away from the first height limiting frame, of the slide way; the first connecting hole is communicated with the limiting groove through a second connecting hole; the upright post is provided with a mounting hole; an inflation tube is arranged in the mounting hole, one end of the inflation tube penetrates through the side wall of the upright post to be communicated with the buffering air bag, and the other end of the inflation tube penetrates through the upright post and is connected with a first connecting tube at a position close to the lower end; the first connecting pipe is inserted in the first connecting hole, and a second connecting pipe is inserted in the second connecting hole; one end of the second connecting pipe is communicated with the first connecting pipe, and the other end of the second connecting pipe is communicated with the inflatable air bag; the first connecting pipe and the second connecting pipe are both telescopic pipes.
Through adopting above-mentioned technical scheme, when the car of superelevation strikes on the buffering gasbag, can extrude the buffering gasbag, make the gas in the buffering gasbag pass through the gas tube in proper order, first connecting pipe and second connecting pipe enter into in the inflatable airbag, inflatable airbag can take place the inflation under the restriction of spacing groove, and extrude two limiting plates, make two limiting plates remove to the direction of keeping away from first mounting groove center, thereby it hides to retract to first standing groove to drive first apron, when the vehicle continues to travel, promote second limit for height frame and remove to the direction of being close to first limit for height frame, the wheel of vehicle can be absorbed in to first mounting groove, can take place relative rotation with first drive roll when the wheel rotates and produce the phenomenon of skidding, thereby prevent the vehicle to continue to travel, the protection to vehicle and road limit for height frame has been improved.
Preferably, the two upright posts are provided with strip-shaped grooves at positions above the inflation tube; the length direction of the strip-shaped groove is consistent with the length direction of the roadbed; a fixed block is arranged in the strip-shaped groove in a sliding manner; a fixed spring is connected between the fixed block and the end part of the strip-shaped groove; a buffer plate is connected between the two fixed blocks; one side of the buffering air bag is fixedly connected with the buffering plate.
Through adopting above-mentioned technical scheme, set up the buffer board, can convert the flexible extrusion of vehicle striking buffering gasbag into the rigidity extrusion to can improve the gaseous homogeneity in the extrusion buffering gasbag, and be difficult for making sharp thorn arch on the vehicle puncture buffering gasbag, strengthen the protection to the buffering gasbag.
Preferably, a second slipping device is arranged on one side, away from the second height limiting frame, of the first slipping device; a second mounting groove which is parallel to the first mounting groove is formed in the roadbed; the second slipping device comprises a second driving roller which is rotatably arranged in the second mounting groove; the length direction of the second driving roller is consistent with that of the second mounting groove; a second cover plate is arranged in the second placing groove and is covered above the second transmission roller; and a linkage assembly for driving the second cover plate to retract into the second placing groove is arranged in the roadbed.
Through adopting above-mentioned technical scheme, set up the second device that skids for the front and back wheel of vehicle all is in the state of skidding, can further improve the security that prevents the vehicle and continue to travel. The second cover plate is opened through the linkage assembly, so that the second transmission roller can be in contact with the wheel.
Preferably, two ends of the second mounting groove are provided with movable grooves; the linkage assembly comprises a driving gear which is rotatably arranged on the wall of the movable groove; a driving rack is arranged at the end part of the second cover plate; the length direction of the driving rack is consistent with that of the roadbed; a groove is formed in one side, away from the second cover plate, of the movable groove on the roadbed; a first driving wheel and a second driving wheel are rotatably arranged in the groove; the first driving wheel and the second driving wheel are sleeved with synchronous belts; the first driving wheel is connected with the driving gear through a first fixed shaft, and the first fixed shaft is in running fit with the groove wall of the groove close to the movable groove; the upper surface of one driving rack close to the first cover plate is meshed with the driving gear, and the lower surface of the other driving rack is meshed with the driving gear; one side of one first cover plate close to the second cover plate is provided with a linkage rack; a linkage gear is rotatably arranged on the wall of the movable groove close to one side of the groove; the lower part of the linkage rack is meshed with the linkage gear; the linkage gear is connected with the second transmission gear through a second fixed shaft; and the second fixed shaft is in running fit with the groove wall of the groove close to the movable groove.
By adopting the technical scheme, when the two first cover plates are driven to be opened by the inflatable airbag, the linkage gear on the first cover plate close to the second cover plate is meshed with the linkage gear, the linkage gear is driven to rotate anticlockwise in the process that the first cover plate drives the linkage rack to move towards the direction far away from the first height limiting frame, the linkage gear and the second transmission gear are coaxially arranged and can drive the second transmission gear to rotate, the first transmission gear is driven to rotate anticlockwise under the action of the synchronous belt, so that the driving gear rotates anticlockwise, the driving rack close to the first cover plate is meshed with the lower surface of the driving gear, the second cover plate close to the first cover plate can move towards the direction near the first height limiting frame, the other driving rack is meshed with the upper surface of the driving gear, and the second cover plate far away from the first cover plate can move towards the direction near the first height limiting frame, and then open two second apron for the second apron is completely retracted to the second standing groove in, and the vehicle can make the front wheel fall into to first mounting groove and take place the phenomenon of skidding with first driving roller when continuing to travel, and the rear wheel falls into to the second mounting groove and takes place the phenomenon of skidding with the second driving roller.
Preferably, a gravity ring is fixed on the outer surface of the inflatable air bag; the section of the gravity ring is rectangular; the gravity rings are arranged in a plurality at intervals along the length direction of the inflatable air bag.
Through adopting above-mentioned technical scheme, set up the gravity ring at the surface of inflating the gasbag, be favorable to the restriction to inflate the extension direction when gasbag fills gas for it can stably drive two limiting plates and remove to the direction of keeping away from first mounting groove center to inflate the gasbag, opens two first apron, and the tank bottom contact of gravity ring and spacing groove is favorable to improving the life of inflating the gasbag, reduces the friction of inflating the gasbag and directly producing with the spacing groove between.
Preferably, an avoidance groove is formed in one side, away from the first height limiting frame, of the upright column; the avoidance groove is close to the lower end face of the upright post, and the lower groove wall of the avoidance groove penetrates through the lower end face of the upright post; an antifriction roller is rotatably connected to the upper groove wall of the avoidance groove; the axial line of the antifriction roller is vertical to the length direction of the roadbed; the lower surface of the antifriction roller is abutted against the upper surface of the first connecting pipe.
Through adopting above-mentioned technical scheme, set up and dodge the groove, the second limit for height is promoted by the vehicle to the in-process that removes to being close to first limit for height along the length direction of slide, and setting up of antifriction roller makes first connecting pipe be difficult for taking place the friction with the stand, has improved the life of first connecting pipe.
Preferably, the first height limiting frame comprises fixing columns respectively fixed on two sides of the roadbed and a fixing beam connecting the upper ends of the two fixing columns; the telescopic device comprises a first fixed cylinder, a second fixed cylinder and a connecting spring, wherein the first fixed cylinder is fixed on one side, close to the stand column, of the fixed column, the second fixed cylinder is inserted into the first fixed cylinder and is in sliding fit with the first fixed cylinder, and the connecting spring is connected with the inner wall of the second fixed cylinder and the inner wall of the first fixed cylinder.
Through adopting above-mentioned technical scheme, when second limit for height frame was promoted by the vehicle and is removed to the direction that is close to first limit for height frame, second limit for height frame drove the fixed section of thick bamboo of second and removes along the length direction of first fixed section of thick bamboo for connecting spring is compressed, thereby can improve the restriction to the vehicle, strengthens the buffering to vehicle striking road limit for height frame.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when a vehicle exceeding the road height limiting frame runs to the position, the front end of the vehicle extrudes the buffering air bag, the protection of the vehicle can be improved through the buffering air bag, the ultrahigh vehicle is not easy to damage, if the vehicle continues to run, the impact force is converted into the telescopic device to shorten the displacement, the second height limiting frame slides for a certain distance along the slide way, and therefore the impact on the vehicle can be further reduced;
2. when the vehicle is arranged on the buffering air bag, wheels slip, the vehicle can be prevented from continuously running, the ultra-high vehicle is limited from passing through, the impact of the vehicle is reduced, and the protection effect on the road height limiting frame is enhanced;
3. set up the buffer board, can convert the flexible extrusion of vehicle striking buffering gasbag into the rigidity extrusion to can improve the homogeneity of extrusion buffering gasbag internal gas, and be difficult for making sharp thorn arch on the vehicle puncture buffering gasbag, strengthen the protection to buffering gasbag.
Drawings
Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present application.
Fig. 2 is a schematic structural diagram of a first sliding device according to an embodiment of the present application.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a schematic structural view of a second slipping device of the embodiment of the present application.
Fig. 5 is an enlarged schematic view of a portion B in fig. 4.
Fig. 6 is an enlarged schematic view of a portion C in fig. 4.
Description of reference numerals: 1. a roadbed; 11. a slideway; 111. a first connection hole; 112. a second connection hole; 12. a first mounting groove; 13. a first placing groove; 14. a limiting groove; 141. a limiting block; 15. a second mounting groove; 16. a second placing groove; 17. a movable groove; 18. a groove; 2. a first height limiting frame; 21. fixing a column; 22. a fixed beam; 3. a second height limiting frame; 31. a column; 311. mounting holes; 312. an avoidance groove; 313. an antifriction roller; 314. a strip-shaped groove; 32. a cross beam; 33. a buffer air bag; 34. a fixed block; 35. fixing the spring; 36. a buffer plate; 4. a telescoping device; 41. a first fixed cylinder; 42. a second fixed cylinder; 43. a connecting spring; 5. a first sliding device; 51. a first drive roller; 52. a first cover plate; 6. an unlocking assembly; 61. a limiting plate; 62. a limiting spring; 63. an inflatable air bag; 631. a gravity ring; 64. an inflation tube; 65. a first connecting pipe; 66. a second connecting pipe; 7. a second slipping device; 71. a second driving roller; 72. a second cover plate; 8. a linkage assembly; 81. a drive rack; 82. a drive gear; 83. a first drive pulley; 84. a second transmission wheel; 85. a synchronous belt; 86. a linkage rack; 87. a linkage gear.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses road limit for height frame. Referring to fig. 1, a road height limiting frame, including first height limiting frame 2, second height limiting frame 3 and the telescoping device 4 of connecting first height limiting frame 2 and second height limiting frame 3, set up one section prefabricated section road bed 1 on road bed 1, can be convenient for install first height limiting frame 2 and second height limiting frame 3. Slide 11 has all been seted up in the both sides of this road bed 1, and slide 11 extends the setting along the length direction of road bed 1.
Referring to fig. 1, the first height limiting frame 2 includes two fixing columns 21 and two fixing beams 22, one fixing column 21 is fixed to one side of the roadbed 1, the other fixing column 21 is fixed to the other side of the roadbed 1, and two ends of each fixing beam 22 are respectively fixedly connected to positions of the two fixing columns 21 near the upper ends. The second height limiting frame 3 comprises two upright columns 31 and two cross beams 32, the upright columns 31 are vertically arranged, one upright column 31 is connected in one slide way 11 in a sliding mode, the other upright column 31 is connected in the other slide way 11 in a sliding mode, and two ends of each cross beam 32 are fixedly connected with the positions, close to the upper ends, of the two upright columns 31 respectively. The telescoping device 4 includes a first fixed cylinder 41, a second fixed cylinder 42 and a connecting spring 43, the first fixed cylinder 41 is horizontally arranged and fixed on one side of the fixed column 21 close to the upright column 31, the second fixed cylinder 42 is horizontally arranged and fixed on one side of the upright column 31 close to the fixed column 21, the second fixed cylinder 42 is inserted in the first fixed cylinder 41 and is in sliding fit with the first fixed cylinder 41, and two ends of the connecting spring 43 are respectively fixedly connected with the end part of the second fixed cylinder 42 and the inner wall of the first fixed cylinder 41.
Referring to fig. 1, a buffering airbag 33 is fixed on one side of the cross beam 32, which is far away from the first height limiting frame 2, the buffering airbag 33 is arranged along the length direction of the cross beam 32, and a separation layer is arranged in the middle of the buffering airbag 33 to separate the buffering airbag 33 into two half airbags with the same length along the length direction. Strip-shaped grooves 314 are formed in opposite sides of the two upright columns 31, and the length direction of the strip-shaped grooves 314 is consistent with that of the roadbed 1. Sliding connection has fixed block 34 in bar groove 314, is connected with fixed spring 35 between the tip of fixed block 34 and bar groove 314, is connected with buffer board 36 between two fixed blocks 34, and buffer board 36 and the one side fixed connection that keeps away from crossbeam 32 of buffering gasbag 33, on super high vehicle striking buffer board 36, produce the extrusion to buffering gasbag 33, improve the protection to buffering gasbag 33.
Referring to fig. 1 and 2, in order to reduce the impact of the vehicle on the ultrahigh vehicle after hitting the second height limiting frame 3, a first skid device 5 is installed on the roadbed 1 and near the second height limiting frame 3 for driving the vehicle wheels to idle and preventing the vehicle from running continuously. First mounting groove 12 has been seted up on road bed 1 and near the position of second limit for height frame 3, the length direction of first mounting groove 12 and the length direction mutually perpendicular of road bed 1, first standing groove 13 has been seted up to the both sides at first mounting groove 12, first device 5 of sliding down includes first driving roller 51 and first apron 52, first driving roller 51 rotates to be connected in first mounting groove 12, and the length direction of first driving roller 51 is unanimous with the length direction of first mounting groove 12, first apron 52 sliding connection is in first standing groove 13, and first apron 52 lid is located first driving roller 51 top, seal the notch of first mounting groove 12 after two first apron 52 concatenations.
Referring to fig. 2 and 3, in order to allow the two first cover plates 52 to be automatically retracted into the first placing groove 13 when the vehicle travels over the first driving roller 51, the unlocking assembly 6 is installed in the roadbed 1. Spacing groove 14 has all been seted up at the both ends of first mounting groove 12, the length direction of spacing groove 14 is unanimous with the length direction of road bed 1, unblock subassembly 6 includes limiting plate 61, limiting spring 62 and aerify gasbag 63, limiting plate 61 is fixed in the tip of first apron 52, and limiting plate 61 slides and sets up in spacing groove 14, limiting spring 62's both ends respectively fixed connection limiting plate 61's one side and the cell wall of spacing groove 14, it is located between two adjacent limiting plates 61 to aerify gasbag 63, and the length direction of aerifing gasbag 63 is unanimous with the length direction of spacing groove 14, the external fixation of aerifing gasbag 63 has gravity ring 631, gravity ring 631 is the steel ring, gravity ring 631's cross-section is the rectangle, gravity ring 631 is provided with a plurality ofly along the length direction interval of aerifing gasbag 63. A limiting block 141 is fixed on one side of the limiting groove 14 close to the first mounting groove 12, and the limiting block 141 is located in the middle of the limiting groove 14, so that one side of the inflatable airbag 63 close to the first driving roller 51 is attached to the limiting block 141, the first cover plate 52 is not easily extruded when the inflatable airbag 63 is full of gas, and the first cover plate 52 can be smoothly opened.
Referring to fig. 1 and 3, a mounting hole 311 is formed in the upright column 31 along the height direction of the upright column 31, a first connection hole 111 is formed in one side of the slide rail 11 away from the first height limiting frame 2, the length direction of the first connection hole 111 is identical to the length direction of the roadbed 1, a second connection hole 112 is formed in one side of the first connection hole 111, the second connection hole 112 is communicated with the limiting groove 14, an inflation tube 64 is inserted into the mounting hole 311, a first connection tube 65 is inserted into the first connection hole 111, a second connection tube 66 is inserted into the second connection hole 112, one end of the inflation tube 64 passes through the upright column 31 and is communicated with one side of the cushion airbag 33, the other end of the inflation tube 64 is communicated with the first connection tube 65, one end of the first connection tube 65 away from the inflation tube 64 is communicated with the second connection tube 66, one end of the second connection tube 66 away from the first connection tube 65, the first connection pipe 65 and the second connection pipe 66 are flexible extension pipes. In order to accommodate the first and second connection pipes 65 and 66, the first connection hole 111 has a hole diameter larger than that of the first connection pipe 65, and the second connection hole 112 has a hole diameter larger than that of the second connection pipe 66.
Referring to fig. 3, an avoiding groove 312 is formed in one side of the upright column 31, which is far away from the first height limiting frame 2, the avoiding groove 312 is close to the lower end surface of the upright column 31, the lower groove wall of the avoiding groove 312 penetrates through the lower end surface of the upright column 31, an anti-friction roller 313 is rotatably connected to the upper groove wall of the avoiding groove 312, the axis of the anti-friction roller 313 is perpendicular to the length direction of the roadbed 1, the lower surface of the anti-friction roller 313 abuts against the upper surface of the first connecting pipe 65, and when the upright column 31 moves, friction generated between the first connecting pipe 65 and the upright column 31 can be reduced.
Referring to fig. 4, a second slipping device 7 is installed on one side, away from the second height limiting frame 3, of the first slipping device 5, so that the limitation on the ultra-high vehicles is further improved, a second mounting groove 15 is formed in one side, away from the second height limiting frame 3, of the first mounting groove 12 on the roadbed 1, the second mounting groove 15 and the first mounting groove 12 are arranged in parallel, and second placing grooves 16 are formed in two sides of the second mounting groove 15; the second slipping device 7 comprises a second driving roller 71 and a second cover plate 72, the second driving roller 71 is rotatably connected in the second mounting groove 15, the length direction of the second driving roller 71 is consistent with that of the second mounting groove 15, the second cover plate 72 is slidably connected in the second placing groove 16, the second cover plate 72 is covered above the second driving roller 71, and the notches of the second mounting groove 15 are sealed after the two second cover plates 72 are spliced. The movable grooves 17 are formed in the two ends of the second mounting groove 15, a connecting block is fixed to one side, far away from the center of the second mounting groove 15, of the second cover plate 72, and a limiting spring 62 is connected between the connecting block and the groove wall of the movable groove 17. In order to automatically drive the second cover plate 72 to be retracted into the second placing groove 16, a link assembly 8 is installed in the roadbed 1.
Referring to fig. 5 and 6, the linkage assembly 8 includes a driving rack 81, a driving gear 82, a first driving wheel 83, a second driving wheel 84, a timing belt 85, a linkage rack 86, and a linkage gear 87, the driving rack 81 is fixed to an end of the second cover plate 72, and a length direction of the driving rack 81 is identical to a length direction of the roadbed 1. The driving rack 81 is fixedly connected with the second cover plate 72 through a connecting block.
Referring to fig. 4 and 6, the driving gear 82 is rotatably coupled to a groove wall of the movable groove 17 away from the second driving roller 71, an upper surface of the driving rack 81 adjacent to the first cover plate 52 is engaged with a lower surface of the driving gear 82, and a lower surface of the driving rack 81 away from the first cover plate 52 is engaged with an upper surface of the driving gear 82. A groove 18 is formed in one side, away from the second cover plate 72, of the movable groove 17 on the roadbed 1, the length direction of the groove 18 is consistent with the length direction of the roadbed 1, the first driving wheel 83 and the second driving wheel 84 are connected into the groove 18 in a rotating mode, the first driving wheel 83 and the second driving wheel 84 are arranged at intervals, and the synchronous belt 85 is sleeved on the first driving wheel 83 and the second driving wheel 84 and used for driving the first driving wheel 83 and the second driving wheel 84 to move synchronously. The first driving wheel 83 is connected to the driving gear 82 by a first fixed shaft which is in running engagement with the wall of the recess 18 adjacent to the active channel 17. The linkage rack 86 is fixedly connected with one side of one first cover plate 52 close to the second cover plate 72, the linkage gear 87 is rotatably connected with one side of the movable groove 17 close to the groove 18, the lower part of the linkage rack 86 is meshed with the linkage gear 87, the linkage gear 87 is connected with the second transmission gear through a second fixed shaft, and the second fixed shaft is rotatably matched with the groove wall of the groove 18 close to the movable groove 17.
The implementation principle of the road height limiting frame in the embodiment of the application is as follows: when a vehicle passes through the roadbed 1 provided with the road height limiting frame, the front end of the vehicle extrudes the buffer plate 36, so that the buffer plate 36 extrudes the buffer air bag 33, gas in the buffer air bag 33 sequentially enters the inflatable air bag 63 through the inflation pipe 64, the first connecting pipe 65 and the second connecting pipe 66, and the inflatable air bag 63 expands and extends along the length direction of the limiting groove 14. The two ends of the inflatable air bag 63 push the two limiting plates 61 to move in the direction away from the center of the first mounting groove 12, so that the limiting plates 61 drive the first cover plate 52 to retract into the first placing groove 13. When the limiting plate 61 close to the second cover plate 72 moves towards the direction close to the second cover plate 72, the linkage rack 86 fixed on the limiting plate 61 drives the linkage gear 87 to rotate counterclockwise, so as to drive the second transmission wheel 84 to rotate, the second transmission wheel 84 drives the first transmission wheel 83 to rotate through the synchronous belt 85, because the first transmission wheel 83 is connected with the driving gear 82 through the first fixed shaft, so that the driving gear 82 rotates counterclockwise, the driving rack 81 close to the first cover plate 52 is meshed with the lower surface of the driving gear 82, so that the second cover plate 72 close to the first cover plate 52 moves towards the direction close to the first height limiting frame 2, and the other driving rack 81 is meshed with the upper surface of the driving gear 82, so that the second cover plate 72 far away from the first cover plate 52 moves towards the direction close to the first height limiting frame 2, and then the two second cover plates 72 are opened.
When the vehicle continues to travel along the length direction of the roadbed 1, the second height limiting frame 3 can be pushed to move along the length direction of the slide rail 11 to the direction of the first height limiting frame 2, the front wheel of the vehicle can be trapped in the first mounting groove 12, the front wheel can slip with the first transmission roller 51, the rear wheel of the vehicle can be trapped in the second mounting groove 15, the rear wheel can slip with the second transmission roller 71, and further the vehicle is effectively prevented from continuing to advance, so that the impact generated when the ultrahigh vehicle strikes the road height limiting frame is reduced.
After the inflatable airbag 63 is completely deployed, the side wall of the first cover plate 52 is spaced from the side wall of the first mounting groove 12, and the side wall of the second cover plate 72 is spaced from the side wall of the second mounting groove 15, so that even if the gas volume in the inflatable airbag 63 changes slightly in the later period, the first cover plate 52 is not affected.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a road limit for height frame, is including being fixed in first limit for height frame (2) on road bed (1), its characterized in that: a second height limiting frame (3) is arranged on the roadbed (1) in a sliding manner; a telescopic device (4) is connected between the first height limiting frame (2) and the second height limiting frame (3); both sides of the roadbed (1) are provided with slideways (11); the slide way (11) is arranged along the length direction of the roadbed (1); the second height limiting frame (3) comprises upright columns (31) which are respectively arranged in the two slideways (11) in a sliding way and a cross beam (32) which is connected with the upper ends of the two upright columns (31); a buffering air bag (33) is arranged on one side, away from the first height limiting frame (2), of the cross beam (32); and a first skidding device (5) for driving wheels of the vehicle to idle is arranged on the roadbed (1) and close to the second height limiting frame (3).
2. A road height limiting shelf according to claim 1, wherein: a first mounting groove (12) is formed in the roadbed (1), and the length direction of the first mounting groove (12) is perpendicular to the length direction of the roadbed (1); two sides of the first mounting groove (12) are provided with first placing grooves (13); the first sliding device (5) comprises a first transmission roller (51) which is rotatably arranged in the first mounting groove (12); the length direction of the first driving roller (51) is consistent with the length direction of the first mounting groove (12); a first cover plate (52) is arranged in the first placing groove (13), and the first cover plate (52) is arranged above the first transmission roller (51) in a covering mode; an unlocking assembly (6) for driving the first cover plate (52) to retract into the first placing groove (13) is arranged in the roadbed (1).
3. A road height limiting shelf according to claim 2, wherein: both ends of the first mounting groove (12) are provided with limiting grooves (14); the length direction of the limiting groove (14) is consistent with the length direction of the roadbed (1); the unlocking assembly (6) comprises a limiting plate (61) arranged at the end part of the first cover plate (52) and a limiting spring (62) connecting the limiting plate (61) and the groove wall of the limiting groove (14); an inflatable air bag (63) is arranged between the two limiting plates (61); a first connecting hole (111) is formed in one side, away from the first height limiting frame (2), of the slide way (11); the first connecting hole (111) is communicated with the limiting groove (14) through a second connecting hole (112); the upright post (31) is provided with a mounting hole (311); an inflation tube (64) is arranged in the mounting hole (311), one end of the inflation tube (64) penetrates through the side wall of the upright post (31) to be communicated with the buffering air bag (33), and the other end of the inflation tube (64) penetrates through the upright post (31) and is connected with a first connecting tube (65) close to the lower end; the first connecting pipe (65) is inserted into the first connecting hole (111), and the second connecting pipe (66) is inserted into the second connecting hole (112); one end of the second connecting pipe (66) is communicated with the first connecting pipe (65), and the other end of the second connecting pipe (66) is communicated with the inflatable air bag (63); the first connecting pipe (65) and the second connecting pipe (66) are telescopic pipes.
4. A road height limiting shelf according to claim 3, wherein: a strip-shaped groove (314) is formed in the positions, above the air inflation tube (64), of the two upright posts (31); the length direction of the strip-shaped groove (314) is consistent with the length direction of the roadbed (1); a fixed block (34) is arranged in the strip-shaped groove (314) in a sliding manner; a fixed spring (35) is connected between the fixed block (34) and the end part of the strip-shaped groove (314); a buffer plate (36) is connected between the two fixing blocks (34); one side of the buffer air bag (33) is fixedly connected with the buffer plate (36).
5. A road height limiting shelf according to claim 2, wherein: a second slipping device (7) is arranged on one side, away from the second height limiting frame (3), of the first slipping device (5); a second mounting groove (15) which is parallel to the first mounting groove (12) is formed in the roadbed (1); second placing grooves (16) are formed in the two sides of the second mounting groove (15); the second slipping device (7) comprises a second driving roller (71) which is rotatably arranged in the second mounting groove (15); the length direction of the second transmission roller (71) is consistent with that of the second mounting groove (15); a second cover plate (72) is arranged in the second placing groove (16), and the second cover plate (72) is covered above the second transmission roller (71); and a linkage assembly (8) for driving the second cover plate (72) to retract into the second placing groove (16) is arranged in the roadbed (1).
6. A road height limiting frame according to claim 5, wherein: two ends of the second mounting groove (15) are provided with movable grooves (17); the linkage assembly (8) comprises a driving gear (82) which is rotatably arranged on the wall of the movable groove (17); a driving rack (81) is arranged at the end part of the second cover plate (72); the length direction of the driving rack (81) is consistent with that of the roadbed (1); a groove (18) is formed in one side, away from the second cover plate (72), of the movable groove (17) on the roadbed (1); a first driving wheel (83) and a second driving wheel (84) are rotatably arranged in the groove (18); the first driving wheel (83) and the second driving wheel (84) are sleeved with synchronous belts; the first driving wheel (83) is connected with the driving gear (82) through a first fixed shaft, and the first fixed shaft is in rotating fit with the groove wall of the groove (18) close to the movable groove (17); the upper surface of one driving rack (81) close to the first cover plate (52) is meshed with the driving gear (82), and the lower surface of the other driving rack (81) is meshed with the driving gear (82); a linkage rack (86) is arranged on one side of one first cover plate (52) close to the second cover plate (72); a linkage gear (87) is rotatably arranged on the groove wall of the movable groove (17) close to one side of the groove (18); the lower part of the linkage rack (86) is meshed with a linkage gear (87); the linkage gear (87) is connected with the second transmission gear through a second fixed shaft; the second fixed shaft is in running fit with the groove wall of the groove (18) close to the movable groove (17).
7. A road height limiting shelf according to claim 3, wherein: a gravity ring (631) is fixed on the outer surface of the inflatable air bag (63); the section of the gravity ring (631) is rectangular; the gravity rings (631) are provided in plurality at intervals along the longitudinal direction of the inflatable airbag (63).
8. A road height limiting shelf according to claim 3, wherein: an avoidance groove (312) is formed in one side, away from the first height limiting frame (2), of the upright post (31); the avoidance groove (312) is close to the lower end face of the upright post (31), and the lower groove wall of the avoidance groove (312) penetrates through the lower end face of the upright post (31); an antifriction roller (313) is rotatably connected to the upper groove wall of the avoidance groove (312); the axial line of the antifriction roller (313) is vertical to the length direction of the roadbed (1); the lower surface of the antifriction roller (313) abuts against the upper surface of the first connecting pipe (65).
9. A road height limiting shelf according to claim 1, wherein: the first height limiting frame (2) comprises fixing columns (21) fixed on two sides of the roadbed (1) respectively and a fixing beam (22) connected with the upper ends of the two fixing columns (21); the telescopic device (4) comprises a first fixed cylinder (41) fixed on one side of the fixed column (21) close to the upright column (31), a second fixed cylinder (42) inserted in the first fixed cylinder (41) and in sliding fit with the first fixed cylinder (41), and a connecting spring (43) connecting the second fixed cylinder (42) and the inner wall of the first fixed cylinder (41).
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|---|---|---|---|
| CN202011595322.7A CN112681180B (en) | 2020-12-30 | 2020-12-30 | Road height limiting frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011595322.7A CN112681180B (en) | 2020-12-30 | 2020-12-30 | Road height limiting frame |
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Cited By (1)
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|---|---|---|---|---|
| CN116289702A (en) * | 2023-02-23 | 2023-06-23 | 中国一冶集团有限公司 | Municipal bridge height limiting system |
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|---|---|
| CN112681180B (en) | 2022-04-22 |
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