Diversion wind-resistant foot plank

Abstract

A flow guide wind-resistant foot plank comprises a supporting seat, a fixing frame and a flow guide plate, the fixing frame is located on the supporting seat, a flow guide notch is formed in the fixing frame, the flow guide plate is located in the flow guide notch, the section of the flow guide plate is shaped like a Chinese character'chang ', the flow guide plate comprises a body, one side of the body is provided with a flow guide part in an extending mode, and the flow guide part is located in the flow guide notch. The two side wall faces of the section of the flow guide part are smooth curved faces, the connecting position of the wall face, close to the other side of the main body, of the flow guide part and the main body is of an arc-shaped structure, and the flow guide part faces the lower portion of the fixing frame. The flow guide plate structure is designed in combination with streamlined lines of fishes, the aerodynamic shape of the flow guide plate structure is optimized, meanwhile, the lower edge of the flow guide plate part is lower than the fixed frame, airflow is better guided, airflow below a foot plank can be guided upwards, and therefore the wind load is reduced. In order to ensure that the foot plank has good wind resistance, the foot plank is integrally formed into a grid form, the foot plank has good ventilation performance while meeting standard requirements, and then wind lifting accidents are prevented.

Description

Technical Field

[0001] The present invention relates to the field of walking boards, and in particular to a diversion and wind-resistant walking board. Background Art

[0002] At present, most of the bridges on domestic ordinary-speed railways and heavy-haul railways are segmental simply supported T-beams. The T-beams have large stiffness and damping and are not sensitive to wind. The concrete walking boards are directly placed on the angle steel brackets on both sides of the T-beams and only rely on their own weight to resist wind loads, making it difficult to balance in a strong wind environment. In recent years, tornadoes have occurred frequently in Jiangsu area, and the problem of wind-lifting of walking boards on T-beams has become increasingly prominent and attracted much attention.

[0003] Under a strong wind environment, the sidewalk on the T-beam is subject to wind loads far exceeding its own weight. In windy areas such as the coast and the northwest, the concrete walking boards on operating railway bridges are relatively easy to be overturned by the wind, entering the track and seriously affecting the train operation safety, causing serious economic losses. Similar accidents have occurred many times.

[0004] For the existing structure form of the walking board itself, its ventilation rate is close to 0%, and its aerodynamic performance is poor. Therefore, it is necessary to study a walking board with good aerodynamic performance to adapt to the strong wind environment. Summary of the Invention

[0005] The purpose of the present invention is to provide a diversion and wind-resistant walking board, which solves the problem that the walking board does not have good aerodynamic performance during use.

[0006] To achieve the above purpose, the present invention provides a diversion and wind-resistant walking board, including a support base, a fixed frame and a diversion plate. The fixed frame is on the support base, and a diversion slot is provided on the fixed frame. The diversion plate is in the diversion slot.

[0007] The cross-section of the diversion plate is in the shape of "厂", and the diversion plate includes a main body.

[0008] A diversion part extends from one side of the main body. The side walls of the cross-section of the diversion part are smooth curved surfaces, and the connection between the wall surface of the diversion part close to the other side of the main body and the main body is an arc-shaped structure.

[0009] The diversion part faces downward of the fixed frame.

[0010] Preferably, the calculation equation of the arc of the side walls of the cross-section of the diversion part is:

[0011] Taking the bottom end of the diversion part as the origin O, and the width and height of the diversion part as the x and y axes, a coordinate system is constructed.

[0012] Among them, the arc equation of the wall surface of the diversion part away from the arc-shaped structure is:

[0013] OA segment: y = (3 / 200) * x 3

[0014] The wall arc equation of the guide part close to the arc-shaped structure is:

[0015] OB segment: y = (2 / 625) * x 3

[0016] BC segment: y=((2 / 625)*(x-50)3)+100.

[0017] Preferably, the support seat comprises a support frame, the support frame is provided with a placement groove, and the fixed frame is located in the placement groove.

[0018] The support frame is also provided with a quick-connect structure, and the fixed frame is fixedly connected to the support frame via the quick-connect structure.

[0019] Preferably, the quick-connect structure includes a connecting groove, an adjusting member, a cover plate, a first pressing block, a second pressing block, an elastic member and a connecting hole.

[0020] The connecting groove is arranged on the supporting frame, the cover plate is located at the opening of the connecting groove, the adjusting member passes through the cover plate and is connected with the first pressing block, the adjusting member controls the first pressing block and the second pressing block to press against each other, and the side on which the two are pressed against each other is an inclined surface, the first pressing block and the second pressing block are located in the connecting groove, and a connecting column is provided on the side of the second pressing block away from the first pressing block, the connecting hole is arranged on the fixing frame, the connecting column passes through the connecting groove and is connected with the connecting hole, and the elastic member passes through the connecting column and is located between the connecting groove and the second pressing block.

[0021] Preferably, the support frame is further provided with a positioning protrusion, and the fixing frame is provided with a positioning groove corresponding to the positioning protrusion; the positioning groove is sleeved on the positioning protrusion.

[0022] Preferably, the support frame is further provided with a guide reinforcement rib, the guide reinforcement rib is arranged on a side perpendicular to the placement groove, the guide reinforcement rib is a quarter of an elliptical structure, and the apex of the guide reinforcement rib faces the guide plate.

[0023] Beneficial effects of the present invention: The guide plate structure is designed in combination with the streamlined lines of fish to optimize its aerodynamic shape. At the same time, the lower edge of the guide plate is lower than the fixed frame, thereby better guiding the airflow and being able to guide the airflow under the walking board upward, thereby reducing the wind load. Point B is the midpoint of the OC segment. In practice, the cross-sectional form can be optimized according to the material properties, and the corresponding curved surface arc of the guide portion can be calculated through the function. In order to ensure that the walking board has good wind resistance, it is integrally formed into a grille form, which meets the regulatory requirements and has good ventilation performance, thereby preventing the occurrence of wind-lifting accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the fixed frame and the guide plate of the present invention.

[0027] Figure 3 It is the calculation coordinate system of the guide plate of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the horizontal plane detection mechanism of the present invention.

[0029] Figure 5 yes Figure 4 Enlarged view of point F in the middle.

[0030] Figure 6 It is a cross-sectional schematic diagram of the present invention.

[0031] Figure 7 It is a connection diagram of the positioning protrusion and the positioning groove.

[0032] In the figure: support seat 100; support frame 110; placement groove 111; positioning protrusion 112; guide reinforcement rib 113; quick connection structure 120; connecting groove 121; adjustment member 122; cover plate 123; first pressure block 124; second pressure block 125; elastic member 126; connecting hole 127; connecting column 128; fixing frame 200; guide slot 210; positioning groove 220; guide plate 300; main body 310; guide part 320. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0034] like Figure 1 As shown in the figure, a flow-guiding and wind-resistant walking board includes a support base 100, a fixed frame 200, and a flow-guiding plate 300. The fixed frame 200 is located on the support base 100, and a flow-guiding notch 210 is provided on the fixed frame 200. The flow-guiding plate 300 is located within the flow-guiding notch 210. The cross-section of the flow-guiding plate 300 is in the shape of a "factory". The flow-guiding plate 300 includes a main body 310, and a flow-guiding portion 320 extends from one side of the main body 310. The two side wall surfaces of the cross-section of the flow-guiding portion 320 are smooth curved surfaces, and the connection between the wall surface of the flow-guiding portion 320 close to the other side of the main body 310 and the main body 310 is an arc-shaped structure. The flow-guiding portion 320 faces downward of the fixed frame 200. The present invention adopts a structural form combining the fixed frame 200 and the flow-guiding plate 300 to guide the airflow, so that the working load area requirement of the sidewalk board is as large as possible, and at the same time, it can have a good aerodynamic shape at high wind speeds, thereby achieving the purpose of preventing wind-lifting accidents. It solves the problem of insufficient wind resistance performance of existing concrete walking boards in strong wind environments, and at the same time ensures that the walking board has good working performance.

[0035] As Figure 2-Figure 3 shown, the calculation equation of the arc of the two side wall surfaces of the cross-section of the flow-guiding portion 320 is:

[0036] Taking the bottom end of the flow-guiding portion 320 as the origin O, and the width and height of the flow-guiding portion 320 as the xy-axis, a coordinate system is constructed.

[0037] Among them, the arc equation of the wall surface of the flow-guiding portion 320 far from the arc-shaped structure is:

[0038] For the OA section: y = (3 / 200)*x 3

[0039] The arc equation of the wall surface of the flow-guiding portion 320 close to the arc-shaped structure is:

[0040] For the OB section: y = (2 / 625)*x 3

[0041] For the BC section: y = ((2 / 625)*(x - 50)^3) + 100.

[0042] The structure of this flow-guiding plate 300 is designed by combining the streamlined lines of fish to optimize its aerodynamic shape. At the same time, the lower edge of part of the flow-guiding plate 300 is lower than the fixed frame 200, so as to better guide the airflow, and can guide the airflow under the walking board upward, thereby reducing the wind load. Among them, point B is the midpoint of the OC section. In practice, the cross-section form can be optimized according to the material performance, and the corresponding curved surface arc of the flow-guiding portion 320 can be calculated through the function. To ensure good wind resistance performance of the walking board, its overall shape is a grid form, which has good ventilation performance while meeting the specification requirements, thereby preventing wind-lifting accidents.

[0043] As Figure 4-Figure 5 As shown, the support seat 100 includes a support frame 110, a placement groove 111 is provided on the support frame 110, a fixed frame 200 is located in the placement groove 111, and a quick connection structure 120 is also provided on the support frame 110, and the fixed frame 200 is fixedly connected to the support frame 110 through the quick connection structure 120. The present invention uses the support frame 110 to fix the fixed frame 200, which can be better connected to the T-beam angle steel bracket, and through the quick connection structure 120, it can be more convenient and quick to achieve connection with the fixed frame 200, thereby improving installation efficiency. It is also conducive to daily maintenance and quick replacement.

[0044] Specifically, the quick-connect structure 120 includes a connecting groove 121, an adjusting member 122, a cover plate 123, a first pressure block 124, a second pressure block 125, an elastic member 126 and a connecting hole 127. The connecting groove 121 is arranged on the support frame 110, the cover plate 123 is located at the opening of the connecting groove 121, the adjusting member 122 passes through the cover plate 123 and is connected to the first pressure block 124, the adjusting member 122 controls the first pressure block 124 and the second pressure block 125 to press against each other, and the side on which the two are pressed against each other is an inclined surface, the first pressure block 124 and the second pressure block 125 are located in the connecting groove 121, and a connecting column 128 is provided on the side of the second pressure block 125 away from the first pressure block 124, the connecting hole 127 is arranged on the fixed frame 200, the connecting column 128 passes through the connecting groove 121 and is connected to the connecting hole 127, and the elastic member 126 passes through the connecting column 128 and is located between the connecting groove 121 and the second pressure block 125. During installation, the fixing frame 200 is placed on the placement slot 11, and then the adjusting member 122 is adjusted so that the first pressing block 124 presses the second pressing block 125 downward, and the connecting column 128 extends into the connecting hole 127 to achieve fixation. During disassembly, the adjusting member 122 is released, and the second pressing block 125 automatically returns to its original position under the action of the elastic member 126, thereby driving the connecting column 128 to disengage from the connecting hole 127. The quick-connect structure 120 of the present invention is provided with multiple groups, which can provide a more solid fixing effect and further ensure that the walking board has good working support.

[0045] In addition, if Figure 6 As shown, the support frame 110 is also provided with a positioning protrusion 112, and the fixed frame 200 is provided with a positioning groove 220 corresponding to the positioning protrusion 112; the positioning groove 220 is sleeved on the positioning protrusion 112. Through the connection between the positioning protrusion 112 and the positioning groove 220, the fixed frame 200 can be limited in position to ensure that the connecting hole 127 corresponds to the connecting column 128 to avoid displacement. In addition, the raised positioning protrusion 112 can increase the friction force on the fixed frame 200, making it difficult for the two to separate or displace, further ensuring the working performance of the walking board.

[0046] like Figure 7As shown, the support frame 110 is also provided with a guide reinforcement rib 113, which is arranged on a side perpendicular to the placement groove 111, and is a quarter elliptical structure, and the vertex of the guide reinforcement rib 113 faces the guide plate 300. The support frame 110 of the present invention is provided with a guide reinforcement rib 113, which is in the shape of a quarter ellipse. When two walking boards are spliced ​​together, they can be combined to form a half ellipse. According to the Coanda effect, the fluid (water flow or air flow) has a tendency to leave the original flow direction and flow along the protruding surface of the object. When there is surface friction between the fluid and the surface of the object it flows through, the flow rate of the fluid will slow down. According to the Bernoulli principle in fluid mechanics, the slowdown of the flow rate will cause the fluid to be adsorbed on the surface of the object and flow. When the gas passes through the combined semi-elliptical surface, it will be adsorbed in an orderly manner by the surface of the flange and guided to the direction of the guide plate 300, so that the airflow at the bottom of the walking board can be better guided by the guide plate 300, and the multiple guide reinforcement ribs 113 can better separate the airflow into more small airflows, reduce the impact of the airflow on the guide plate 300, and ensure the long-term use of the device. At the same time, it can also play the role of reinforcement ribs on the support plate to prevent the support plate from bending and ensure the safe use of the walking board.

[0047] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A wind-proof walking board, characterized in that: It includes a support base (100), a fixed frame (200) and a deflector (300). The fixed frame (200) is located on the support base (100), and a diversion notch (210) is provided on the fixed frame (200). The deflector (300) is located within the diversion notch (210). The cross-section of the deflector (300) is in the shape of "Γ", and the deflector (300) includes a main body (310). A diversion portion (320) extends from one side of the main body (310). The two side wall surfaces of the cross-section of the diversion portion (320) are smooth curved surfaces, and the connection between the wall surface of the diversion portion (320) close to the other side of the main body (310) and the main body (310) is an arc-shaped structure. The diversion portion (320) faces downward of the fixed frame (200). The calculation equation of the arcs of the two side wall surfaces of the cross-section of the diversion portion (320) is as follows: Taking the bottom end of the diversion portion (320) as the origin O, and the width and height of the diversion portion (320) as the x and y axes, a coordinate system is constructed. Among them, the arc equation of the wall surface of the diversion portion (320) away from the arc-shaped structure is: OA level: y=(3 / 200)*x 3 The arc equation of the wall surface of the diversion portion (320) close to the arc-shaped structure is: OB: y (2 / 625)*x 3 BC section: y=((2 / 625)*(x-50) 3 )+100.

2. The wind-proof walking board according to claim 1, characterized in that: The support base (100) includes a support frame (110). A placement groove (111) is provided on the support frame (110), and the fixed frame (200) is located within the placement groove (111). A quick connection structure (120) is also provided on the support frame (110). The fixed frame (200) is fixedly connected to the support frame (110) through the quick connection structure (120).

3. The wind-proof walking board according to claim 2, characterized in that: The quick connection structure (120) includes a connection groove (121), an adjusting member (122), a cover plate (123), a first pressing block (124), a second pressing block (125), an elastic member (126) and a connection hole (127). The connection groove (121) is provided on the support frame (110). The cover plate (123) is located at the opening of the connection groove (121). The adjusting member (122) passes through the cover plate (123) and is connected to the first pressing block (124). The adjusting member (122) controls the first pressing block (124) to press against the second pressing block (125), and the surfaces where they press against each other are inclined planes. The first pressing block (124) and the second pressing block (125) are located within the connection groove. A connection column (128) is provided on the side of the second pressing block (125) away from the first pressing block (124). The connection hole (127) is provided on the fixed frame (200). The connection column (128) passes through the connection groove (121) and is connected to the connection hole (127). The elastic member (126) passes through the connection column (128) and is located between the connection groove (121) and the second pressing block (125).

4. The wind-proof walking board according to claim 2, characterized in that: The support frame (110) is also provided with a positioning protrusion (112), and the fixed frame (200) is provided with a positioning groove (220) corresponding to the positioning protrusion (112); the positioning groove (220) is sleeved on the positioning protrusion (112).

5. The wind-proof walking board according to claim 2, characterized in that: The support frame (110) is also provided with a guide reinforcement rib (113), the guide reinforcement rib (113) being arranged on a side perpendicular to the placement groove (111), the guide reinforcement rib (113) being a quarter elliptical structure, and the apex of the guide reinforcement rib (113) facing the guide plate (300).

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