Self-adaptive wind-resistant foot plank
By designing adaptive wind-resistant pedestrian boards, using the combined structure of fixed units and movable units and multiple components design, the existing pedestrian boards have insufficient wind resistance performance in strong wind environments, and the effect of automatically adapting to the wind environment, reducing wind pressure and preventing wind accidents is achieved.
Patent Information
- Application Number
- CN202421419217.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing concrete pedestrian slabs have insufficient wind resistance in strong wind environments and are easily overturned by the wind, affecting the safety of trains and causing economic losses.
An adaptive wind-resistant walking plate is designed, adopting a combined structure of a fixed unit and multiple movable units. Through the design of a shaft assembly, a limiting assembly and a damping assembly, the movable unit rotates to form a ventilation channel when subjected to wind pressure to reduce the wind pressure. Through the design of the self-locking structure and the bearing arm, the opening and closing direction and angle are limited to the wind environment.
In strong wind environments, the pedestrian board can automatically adapt to the wind environment, adjust the ventilation rate, reduce wind pressure, prevent wind accidents, improve service life, and ensure the good working performance of the pedestrian board when there is no wind or low wind speed.
Smart Images
Figure CN222771319U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of walking boards, in particular to an adaptive wind-resistant walking board. Background Art
[0002] At present, most of the conventional and heavy-duty railway bridges in China are mainly segmented simply supported T-beams. T-beams have high stiffness and damping and are not sensitive to wind. However, the concrete walking slabs are directly placed on the angle steel brackets on both sides of the T-beams. They only rely on their own weight to resist wind loads and are difficult to balance in strong winds. In recent years, tornadoes have occurred frequently in Jiangsu Province, and the problem of wind-lifting walking slabs on T-beams has become increasingly prominent and has attracted much attention.
[0003] In strong winds, T-beam sidewalks are subject to wind loads that far exceed their own weight. In coastal and northwest areas where strong winds are frequent, the concrete walking slabs of operating railway bridges are easily overturned by the wind and enter the tracks, seriously affecting the safety of train operations and causing serious economic losses. Similar accidents have occurred many times.
[0004] For the existing walking board structure, its air permeability is close to 0% and its aerodynamic performance is poor. Therefore, it is necessary to study walking boards with good aerodynamic performance to adapt to strong wind environments and meet the needs of engineering use and operational safety. Summary of the invention
[0005] The utility model aims to solve the shortcomings of the existing walking board structure in the prior art, such as its air permeability is close to 0%, and its aerodynamic performance is poor, and proposes an adaptive wind-resistant walking board.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] Design an adaptive wind-resistant walking board, comprising:
[0008] A fixing unit having at least one receiving position;
[0009] A movable unit is rotatably connected in the accommodation position, and the movable unit is connected to the fixed unit via a shaft assembly;
[0010] Wherein, the shaft assembly is located on one side of the center line of the front view surface of the movable unit. When the bottom of the movable unit is subjected to wind pressure, the movable unit rotates and forms a ventilation channel between the movable unit and the fixed unit.
[0011] Further, the shaft assembly includes two shaft rods installed at both ends of the movable unit, and the two shaft rods rotate with the fixed unit;
[0012] A limiting assembly is also provided between the fixing unit and the shaft rod, and the limiting assembly is used to limit the rotation angle of the shaft rod.
[0013] Furthermore, the limiting assembly includes a first sleeve embedded in the fixing unit, and the shaft rod and the first sleeve are inserted and rotated;
[0014] A boss is disposed inside the first sleeve, and a first avoidance position for accommodating the boss is disposed on the outer side of the shaft rod, wherein the curvature of the first avoidance position is greater than that of the boss.
[0015] Furthermore, the curvature of the first avoidance position is greater than the curvature of the boss by forty-five degrees.
[0016] Further, a damping component is included;
[0017] The damping assembly includes a second sleeve embedded in the fixing unit, the shaft rod and the second sleeve are penetrated and rotated, a mounting portion is fixed inside the second sleeve, a second avoidance position for accommodating the mounting portion is opened on the outer side of the shaft rod, the curvature of the second avoidance position is greater than the curvature of the mounting portion, and a damper is connected between the second avoidance position and the mounting portion.
[0018] Furthermore, the fixed unit is further provided with a bearing arm in the accommodating position, and the upper surface of the bearing arm overlaps with the lower surface of the movable unit.
[0019] Furthermore, a self-locking structure is provided between the carrying arm and the lower surface of the movable unit, and the self-locking structure is used to limit the movement of the movable unit on the carrying arm.
[0020] Furthermore, the self-locking structure includes a first groove and a first protrusion arranged on the upper surface of the supporting arm, and a second groove and a second protrusion are arranged on the lower surface of the movable unit, the first groove is coupled and adapted with the second protrusion, and the first protrusion is coupled and adapted with the second groove.
[0021] Furthermore, the movable unit is a plate-shaped structure, and has at least one air induction channel at the bottom of the movable unit, and the depth of the air induction channel gradually increases from one side close to the shaft assembly to the other side;
[0022] A wind shelter is also provided on the side of the movable unit close to the shaft assembly, and the depth of the wind shelter gradually increases from the lower surface to the upper surface of the movable unit.
[0023] Furthermore, a plurality of the movable units are provided, and the rotation directions of the plurality of movable units are the same, and the rotation direction is the side facing away from the track.
[0024] The utility model proposes an adaptive wind-resistant walking board, which has the beneficial effects that: in the utility model, by adopting a design of a fixed unit and multiple movable units, when the bottom of the entire walking board is subject to wind pressure in a windy climate, the movable unit can achieve ventilation by rotating, thereby reducing the wind pressure, and can automatically open and close to adapt to the pressure difference between the upper and lower surfaces of the structure. Secondly, the shaft assembly on the movable unit in the utility model adopts a three-stage design structure, which can meet the multiple effects of rotation, limiting and damping, so as to adapt to the wind environment to open and close and change its own aerodynamic performance, while limiting the opening and closing direction and angle, adapting to the working environment and buffering vibration, and improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a top view of the utility model;
[0026] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at AA;
[0027] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at BB;
[0028] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure at CC;
[0029] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure at DD;
[0030] Figure 6 It is a structural schematic diagram of the self-locking structure of the utility model;
[0031] Figure 7 It is a structural schematic diagram of the activity unit of the utility model;
[0032] Figure 8 It is a schematic diagram of the structure of the activity unit of the utility model;
[0033] Fig. 9 It is a schematic diagram of the installation structure of the walking board of the utility model.
[0034] In the figure: 1. fixed unit; 11. accommodating position; 12. load-bearing arm; 13. self-locking structure; 2. movable unit; 21. air duct; 22. wind shelter; 3. shaft assembly; 31. shaft rod; 4. limit assembly; 41. first sleeve; 42. boss; 43. first avoidance position; 5. damping assembly; 51. second sleeve; 52. mounting portion; 53. second avoidance position; 54. damper; 6. track. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0036] Reference Figure 1-9 An embodiment of the utility model discloses an adaptive wind-resistant walking board, which can meet the working performance of the walking board while being able to better adapt to the strong wind environment, and can adaptively open and close in the strong wind environment, thereby preventing the occurrence of wind-blowing accidents. In the utility model, the installation of a railway simply supported T-beam bridge is taken as an example, and the walking board is installed on the angle steel brackets on both sides of the T-beam.
[0037] Reference Figure 1 Specifically, the walking board described in the utility model includes a fixed unit 1 having at least one accommodation position 11, and a movable unit 2 is rotatably connected to the accommodation position 11. Specifically, in this embodiment, the height of a single fixed unit 1 is 70 mm, and the height of the movable unit 2 is 40 mm. In practice, the cross-sectional form can be optimized according to the material properties, and the movable unit 2 is connected to the fixed unit 1 through an axis assembly 3;
[0038] It should be pointed out that in the present embodiment, there are multiple movable units 2, that is, there are multiple accommodating positions 11 in the present embodiment, and the accommodating positions 11 are of an up and down through-type structure to facilitate the rotation of the movable unit 2. Of course, the multiple accommodating positions 11 are horizontally and spaced apart, and each of the movable units 2 rotates with the fixed unit 1 through an axis assembly 3.
[0039] That is, the utility model adopts a structural form of a combination of a fixed unit 1 and a movable unit 2 to meet the requirement of a sidewalk tread having a working force area as large as possible when there is no wind or low wind speed, while being able to automatically adapt to the wind environment at high wind speeds and adjust the air permeability, thereby achieving the purpose of preventing wind-lifting accidents, solving the problem of insufficient wind resistance of existing concrete walking slabs in high wind environments, and ensuring that the walking slabs have good working performance.
[0040] Reference Fig. 9 In some embodiments, the fixed unit 1 and the movable unit 2 in the utility model are integrally formed into a grid form. In the utility model embodiment, the rotation direction of the plurality of movable units 2 is the same, and the rotation direction is the side facing away from the track 6. The air outlet mode facing away from the track 6 is adopted to avoid the air outlet airflow interfering with the vehicle running on the track.
[0041] Reference Figure 2, wherein the shaft assembly 3 is located on one side of the center line of the front view surface of the movable unit 2. The movable unit 2 adopts an eccentric shaft design to rely on its own weight to complete automatic closing and rely on the force arm difference on both sides of the rotating shaft to complete the upward flipping through the torque difference on both sides in a strong wind environment, thereby improving the aerodynamic performance. That is to say, when the bottom of the movable unit 2 is subjected to wind pressure, the movable unit 2 rotates and forms a ventilation channel with the fixed unit 1.
[0042] Reference Figure 3 In some embodiments, the shaft assembly 3 in the utility model includes two shafts 31 installed at both ends of the movable unit 2, and the two shafts 31 rotate with the fixed unit 1. Of course, those skilled in the art know that the shaft 31 in this embodiment can be rotated with the fixed unit 1 through a bearing;
[0043] Reference Figure 4 A limit assembly 4 is also provided between the fixed unit 1 and the shaft 31, and the limit assembly 4 is used to limit the rotation angle of the shaft 31. The limit assembly 4 is designed to limit the maximum opening and closing angle of the movable unit 2 to avoid an excessive opening that affects the safety of use.
[0044] Reference Figure 4 On the basis of the above-mentioned embodiment, the position limiting assembly 4 in the present utility model comprises a first sleeve 41 embedded in the fixing unit 1, and the shaft 31 and the first sleeve 41 are penetrated and rotated;
[0045] A boss 42 is disposed inside the first sleeve 41 , and a first avoidance position 43 for accommodating the boss 42 is disposed on the outer side of the shaft rod 31 . The curvature of the first avoidance position 43 is greater than that of the boss 42 .
[0046] Reference Figure 4 Specifically, in the present embodiment, the curvature of the first avoidance position 43 is greater than the curvature of the boss 42 by forty-five degrees, that is, the movable unit 2 in the present embodiment can be lifted up at an angle of 45°, and the opening is toward the outside of the track 6. When receiving wind pressure, the movable unit 2 rotates upward. During this process, when the first avoidance position 43 of the shaft 31 on the movable unit 2 conflicts with the boss 42, the movable unit 2 opens and closes to the maximum angle and cannot be rotated further. This can avoid excessive rotation of the movable unit 2 and affect the safety of the entire walking board.
[0047] Reference Figure 5 , further, the utility model also includes a damping component 5;
[0048] The damping assembly 5 includes a second sleeve 51 embedded in the fixing unit 1, the shaft rod 31 and the second sleeve 51 are penetrated and rotated, a mounting portion 52 is fixed inside the second sleeve 51, and a second avoidance position 53 for accommodating the mounting portion 52 is opened on the outer side of the shaft rod 31, the curvature of the second avoidance position 53 is greater than the curvature of the mounting portion 52, and a damper 54 is connected between the second avoidance position 53 and the mounting portion 52.
[0049] Specifically, in the utility model, the design of the damper 54 can play a buffering role when the movable unit 2 is opened and closed, preventing its high-frequency opening and closing vibration and thus increasing its service life. The damper 54 can adopt a spring damper. This structure is a prior art and will not be described in detail here.
[0050] In this embodiment, "first", "second", etc. are only used to distinguish each other, rather than to indicate the importance and order, or the premise of each other's existence.
[0051] Reference Figure 5 , 7 , wherein the outer side of the second avoidance position 53, that is, the entire shaft 31 in this embodiment, from near the movable unit 2 to the outside, is sequentially: a cylindrical structure, a formed first avoidance position 43 and a formed second avoidance position 53, a three-section structure, which is respectively used to meet the bearing rotation adaptation, movable limit adaptation and damping adaptation between the fixed unit 1, respectively meet the requirements of the movable unit 2 adapting to the wind environment opening and closing and changing its own aerodynamic performance, limiting the opening and closing direction and angle, adapting to the working environment and buffering vibration, thereby improving the service life.
[0052] Reference Figure 6 In some embodiments, the fixed unit 1 in the embodiment of the utility model is located in the accommodating position 11 and is further provided with a load-bearing arm 12, and the upper surface of the load-bearing arm 12 overlaps with the lower surface of the movable unit 2, that is, in the utility model, a load-bearing arm 12 structure protruding from the lower part is designed in the fixed unit 1 parallel to the movable unit 2, which is used for overlapping and stopping the movable unit 2 for resetting, and can improve the force transmission path when the movable unit 2 is in the reset state, thereby enhancing the supporting capacity for the movable unit 2.
[0053] The ventilation channel is formed between the movable units 2 when the carrying arm 12 rotates, so that the wind at the bottom flows upward to achieve pressure reduction.
[0054] It should be noted that in the present embodiment, when the movable unit 2 is overlapped on the bearing arm 12, the upper surface of the movable unit 2 is flush with the upper surface of the fixed unit 1 to ensure the flatness of the upper surface of the entire walking board in a windless state and improve the reliability of use. Of course, technical personnel in the relevant field know that rubber pads can also be embedded on the upper surface of the bearing arm 12. When the movable unit 2 is in the process of rotating and resetting, the rubber pads can be used to flexibly contact with the lower surface of the movable unit 2 to avoid damage to the movable unit 2 and noise caused by hard contact.
[0055] Reference Figure 6 On the basis of the above-mentioned embodiment, in the utility model, a self-locking structure 13 is further arranged between the carrying arm 12 and the lower surface of the movable unit 2, and the self-locking structure 13 is used to limit the movement of the movable unit 2 on the carrying arm 12, and the self-locking structure 13 is used to improve the contact stability between the movable unit 2 and the fixed unit 1.
[0056] In a preferred embodiment, the self-locking structure 13 in the utility model includes a first groove and a first protrusion arranged on the upper surface of the supporting arm 12, and a second groove and a second protrusion are arranged on the lower surface of the movable unit 2, the first groove and the second protrusion are coupled and adapted, and the first protrusion and the second groove are coupled and adapted.
[0057] Specifically, in the present invention, the first groove and the first convexity are both configured as hemispherical structures. Similarly, in the present invention, the second groove and the second convexity are also configured as hemispherical structures. Through the mutual cooperation of the groove and convex structures, it can be achieved that the active unit 2 and the fixed unit 1 are at the overlap position to prevent the active unit 2 from loosening in the absence of wind, affecting normal use, and effectively playing a certain limiting effect. Of course, in other embodiments, the above-mentioned self-locking structure 13 can also be configured as a block structure, that is, a protruding block is provided on the lower surface of the active unit 2, and a rectangular groove is provided on the upper surface of the supporting arm 12. It should be noted that an avoidance slope should be provided at the upper end of the rectangular groove to avoid the rotation space requirement of the active unit 2. This method is a conventional method of technical personnel in the relevant field and will not be elaborated here.
[0058] Reference Figure 8 It should be noted that, in the embodiment of the utility model, the movable unit 2 is a plate-like structure. In the embodiment, the movable unit 2 is in the form of a plate with a thickness of 40 mm and a width of 90 mm, which is fixed to the shaft 31 by welding. There is at least one air duct 21 at the bottom of the movable unit 2, and the depth of the air duct 21 gradually increases from one side close to the shaft assembly 3 to the other side;
[0059] Furthermore, a wind shelter 22 is provided on the side of the movable unit 2 close to the shaft assembly 3 , and a plurality of wind shelters 22 may be provided. The depth of the wind shelter 22 gradually increases from the lower surface to the upper surface of the movable unit 2 .
[0060] Reference Figure 8 That is, in the embodiment of the utility model, the design of multiple air ducts 21 is used to reduce the wind pressure on the side of the movable unit 2 with a smaller length separated by the shaft assembly 3. Specifically, when the bottom of the movable unit 2 is subjected to strong wind pressure, the wind pressure moves toward the other side with a larger length through the air duct 21. In this way, not only the wind pressure on the side with a smaller length can be reduced, but also a part of the wind pressure can be divided to drive the side with a larger length to rotate. After matching the wind pressure on the side with a larger length, the movable unit 2 can respond quickly and rotate, thereby improving the ventilation reaction efficiency.
[0061] Of course, on this basis, the utility model is also provided with a wind shelter 22, and the design of the wind shelter 22 is used to reduce the contact area between the side of the active unit 2 and the wind when it rotates. Because when the active unit 2 rotates, the side of the smaller length will be pressurized by the upward wind, which affects the rotation speed of the active unit 2. Therefore, in this embodiment, through the design of the wind shelter 22, the area facing the wind on the side of the smaller length can be reduced, thereby reducing the wind pressure, so as to further improve the response action speed of the active unit 2, and the entire structural design is simple and reasonable.
[0062] In summary, the utility model adopts a design of a fixed unit 1 and multiple movable units 2. In a windy climate, when the entire bottom of the walking board is subject to wind pressure, the movable unit 2 can achieve ventilation by rotating, thereby reducing the wind pressure, and can automatically open and close to adapt to the pressure difference between the upper and lower surfaces of the structure. Compared with the integral walking board structure, it can avoid the possibility of being overturned by the wind due to excessive pressure, causing a safety accident. Secondly, the shaft assembly 3 on the movable unit 1 in the utility model adopts a three-stage design structure, which can meet the multiple effects of rotation, limiting and damping, so as to adapt to the wind environment to open and close and change its own aerodynamic performance, while limiting the opening and closing direction and angle, adapting to the working environment and buffering vibration, and improving the service life.
[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0064] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An adaptive wind-resistant walking board, characterized in that: include: A fixing unit (1) having at least one receiving position (11); A movable unit (2) is rotatably connected in the accommodation position (11), and the movable unit (2) is connected to the fixed unit (1) via a shaft assembly (3); The shaft assembly (3) is located on one side of the center line of the front view surface of the movable unit (2). When the bottom of the movable unit (2) is subjected to wind pressure, the movable unit (2) rotates and forms a ventilation channel with the fixed unit (1).
2. The adaptive wind-resistant walking board according to claim 1, characterized in that: The shaft assembly (3) comprises two shaft rods (31) mounted at two ends of the movable unit (2), and the two shaft rods (31) rotate with the fixed unit (1); A limiting assembly (4) is also provided between the fixing unit (1) and the shaft (31), and the limiting assembly (4) is used to limit the rotation angle of the shaft (31).
3. The adaptive wind-resistant walking board according to claim 2, characterized in that: The limiting assembly (4) comprises a first sleeve (41) embedded in the fixing unit (1), and the shaft (31) and the first sleeve (41) are inserted and rotated. A boss (42) is provided inside the first sleeve (41), and a first avoidance position (43) for accommodating the boss (42) is provided on the outer side of the shaft rod (31), wherein the curvature of the first avoidance position (43) is greater than that of the boss (42).
4. The adaptive wind-resistant walking board according to claim 3, characterized in that: The curvature of the first avoidance position (43) is greater than that of the boss (42) by forty-five degrees.
5. The adaptive wind-resistant walking board according to claim 2, characterized in that: Also includes a damping component (5); The damping assembly (5) comprises a second sleeve (51) embedded in the fixing unit (1); the shaft (31) and the second sleeve (51) are inserted and rotated; a mounting portion (52) is fixed inside the second sleeve (51); a second avoidance position (53) for accommodating the mounting portion (52) is provided on the outer side of the shaft (31); the curvature of the second avoidance position (53) is greater than the curvature of the mounting portion (52); and a damper (54) is connected between the second avoidance position (53) and the mounting portion (52).
6. The adaptive wind-resistant walking board according to claim 1, characterized in that: The fixed unit (1) is located in the accommodating position (11) and is further provided with a bearing arm (12), the upper surface of the bearing arm (12) being overlapped with the lower surface of the movable unit (2).
7. The adaptive wind-resistant walking board according to claim 6, characterized in that: A self-locking structure (13) is also provided between the bearing arm (12) and the lower surface of the movable unit (2), and the self-locking structure (13) is used to limit the movement of the movable unit (2) on the bearing arm (12).
8. The adaptive wind-resistant walking board according to claim 7, characterized in that: The self-locking structure (13) comprises a first groove and a first protrusion arranged on the upper surface of the carrying arm (12), and a second groove and a second protrusion are arranged on the lower surface of the movable unit (2), the first groove and the second protrusion are coupled and adapted, and the first protrusion and the second groove are coupled and adapted.
9. The adaptive wind-resistant walking board according to claim 1, characterized in that: The movable unit (2) is a plate-shaped structure, and has at least an air induction channel (21) at the bottom of the movable unit (2), wherein the depth of the air induction channel (21) gradually increases from one side close to the shaft assembly (3) to the other side; A wind shelter (22) is also provided on the side of the movable unit (2) close to the shaft assembly (3), and the depth of the wind shelter (22) gradually increases from the lower surface to the upper surface of the movable unit (2).
10. An adaptive wind-resistant walking board according to any one of claims 1 to 9, characterized in that: A plurality of the movable units (2) are provided, and the rotation directions of the plurality of movable units (2) are the same, and the rotation direction is the side facing away from the track (6).