CN112854035B

CN112854035B - Novel bridge windbreak

Info

Publication number: CN112854035B
Application number: CN202110254351.5A
Authority: CN
Inventors: 邹云峰; 卢玄东; 蒋硕; 何旭辉
Original assignee: Central South University; China Railway Economic and Planning Research Institute
Current assignee: Central South University; China Railway Economic and Planning Research Institute
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-11-09
Anticipated expiration: 2041-03-09
Also published as: CN112854035A

Abstract

The invention discloses a novel bridge windbreak, which comprises: the wind barrier plates are arranged on the supporting stand columns at intervals on two sides of the bridge in sequence along the extending direction of the bridge, and the wind barrier plates used for resisting wind pressure are arranged on the supporting stand columns or between two adjacent supporting stand columns. And a mechanical elastic-twisting device is also arranged between the wind baffle and the supporting upright column on the corresponding side, and is used for connecting the wind baffle and the supporting upright column and supplying torque force for the deflection of the wind baffle. The wind baffle is used for deflecting around a horizontal axis or a vertical axis to ventilate and guide airflow after overcoming the torque force applied to the wind baffle by the mechanical elastic-twisting device under the action of wind power, and the wind baffle is also used for automatically rotating under the action of the torque force of the mechanical elastic-twisting device when the wind power is smaller than the torque force borne by the wind baffle. The novel bridge wind barrier disclosed by the invention realizes mechanical, self-rotating and intelligent flow blocking and guiding, is high in automation degree, high in adjustment flexibility and favorable for coping with real-time changing wind environment, and the wind penetration rate is self-adaptively adjusted according to the actual wind power.

Description

Novel bridge windbreak

Technical Field

The invention relates to the technical field of bridge structure protection facilities, in particular to a novel bridge windbreak.

Background

With the continuous development of bridge construction in China, the number of bridge spans in strong wind areas is continuously increased, and the safety of vehicles moving under the action of strong wind is a problem which needs to be considered. The stability and comfort of the automobiles and trains running under the action of strong wind are greatly influenced, even the automobiles and trains are in danger of causing traffic accidents such as sideslip and side turn, and the prohibition of running or the stoppage of the trains at the wind speed below a certain limit value can cause great economic loss, so that the protection of the automobiles and trains running under the action of strong wind becomes a problem to be solved urgently.

The wind barrier is a main means for solving the safety and comfort of bridge deck driving, however, the wind permeability of most of the existing wind barriers can not be adjusted after installation, the section wind permeability is fixed, the wind permeability is set to be small, the wind barrier and the wind load transmitted to the bridge by the wind barrier at high wind speed are increased, and potential safety hazards are brought to the bridge structure; the ventilation rate sets up greatly, and the security that the vehicle was current under the normal use state can not be guaranteed well to the windbreak, consequently most windbreaks can not deal with different wind speed circumstances, especially to the flexible bridge of large-span, can increase unsafe factor undoubtedly.

Although the ventilation rate of the existing part of electric control windbreak can be adjusted according to different wind environments, under extreme weather such as rainstorm, typhoon, heavy snow and the like, an electric system of the windbreak is likely to have a fault and cannot normally operate, and the electric control windbreak system is limited by an algorithm and a transmission device, has certain time delay and is not beneficial to dealing with the wind environment which changes in real time; in addition, in an actual environment, high wind speed may show pulsation, so that the wind barrier plate reciprocates, and if the occurrence of the situation cannot be well limited, great hidden danger is brought to the safety of the wind barrier structure.

Disclosure of Invention

The invention provides a novel bridge windbreak, which aims to solve the technical problems that the ventilation rate of the existing bridge windbreak can not be adjusted after installation, the windbreak can not normally operate easily due to extreme weather, and the action of the windbreak has certain time delay.

The technical scheme adopted by the invention is as follows:

a novel bridge windbreak comprising: the wind barrier plates are arranged on the supporting stand columns or between two adjacent supporting stand columns and used for resisting wind pressure; a mechanical elastic-twisting device is also arranged between the wind baffle plate and the supporting upright column on the corresponding side, and is used for connecting the wind baffle plate and the supporting upright column and supplying torque force for deflection of the wind baffle plate; the wind baffle is used for deflecting around a horizontal axis or a vertical axis to ventilate and guide airflow after overcoming the torque force applied to the wind baffle by the mechanical elastic-twisting device under the action of wind power, and the wind baffle is also used for automatically rotating under the action of the torque force of the mechanical elastic-twisting device when the wind power is smaller than the torque force borne by the wind baffle.

Further, the mechanical elastic torsion device comprises a rotating shaft connected with the side edge or the bottom edge of the wind baffle plate and an elastic torsion member for supplying elastic torsion; the rotating shaft is rotatably arranged in the supporting upright post on the corresponding side in a penetrating way, and the rotating shaft is arranged to deviate from the shape center shaft of the wind barrier plate, so that the wind force acting on the wind barrier plate can enable the wind barrier plate to directionally deflect by taking the rotating shaft as the axis; the elastic torsion component is arranged on the excircle of the rotating shaft, so that the wind baffle can self-adaptively deflect the angle around the rotating shaft after overcoming the torque force applied to the wind baffle by the elastic torsion component under the action of wind power, and the wind baffle can automatically rotate under the action of the torque force of the elastic torsion component when the wind power is smaller than the torque force borne by the wind baffle.

Furthermore, the supporting upright post is provided with an installation channel for the rotating shaft to penetrate through, and the rotating shaft is rotatably arranged in the installation channel through installation bearings arranged at two ends of the rotating shaft; the elastic torsion component comprises fixing rings which are respectively arranged on the outer circles at the two ends of the rotating shaft and a torsion spring for supplying elastic torsion; the fixing ring is fixed in the mounting channel; the torsion spring is arranged on the excircle of the rotating shaft, the middle part of the torsion spring is fixed with the excircle of the rotating shaft, and the two ends of the torsion spring are respectively fixed with the fixing rings at the corresponding ends.

Furthermore, the wind barrier plates are vertically arranged, a plurality of wind barrier plates are sequentially arranged at intervals along the height direction of the supporting upright columns, and two sides of each wind barrier plate are respectively connected with the supporting upright columns on the corresponding sides through a group of mechanical elastic devices, so that the wind barrier plates rotate around the horizontal shaft under the action of wind power; or the wind barrier plate is horizontally arranged, and the bottom end of the wind barrier plate is connected with the corresponding supporting upright post through a group of mechanical elastic devices, so that the wind barrier plate rotates around the vertical shaft under the action of wind power.

Furthermore, the plate surface of the wind baffle plate is a plane or a curved surface; the surface of the wind baffle plate is provided with a through hole penetrating through the surface; the edge of the wind baffle plate is a straight line edge, a broken line edge or a curved edge, or the edge of the wind baffle plate is provided with a concave notch; the wind baffle is a hollow plate or a compact plate; the mass distribution of the wind baffle is not uniform.

Furthermore, the novel bridge wind barrier also comprises a limiting block for limiting the wind barrier plates to deflect towards one direction only, and the limiting block is arranged on the supporting upright post corresponding to each wind barrier plate; the mechanical elastic torsion device is also used for applying initial torsion of the wind barrier plate so that one side of the wind barrier plate, which is positioned on the rotating shaft, abuts against the limiting block when the wind barrier plate is vertical.

Furthermore, the novel bridge windbreak also comprises a self-locking device, and the self-locking device is arranged between the mechanical elastic torsion device and the corresponding installation channel; the self-locking device is used for automatically locking the wind baffle plate when the wind power is greater than the preset locking wind power so as to prevent the wind baffle plate from reciprocating deflection damage under the action of high-frequency wind power, and is also used for automatically unlocking the wind baffle plate when the wind power is lower than the preset locking wind power.

Furthermore, the self-locking device comprises an expansion piece fixed with the outer wall surface of the rotating shaft and a locking piece fixed with the inner wall surface of the installation channel and arranged corresponding to the expansion piece, and the locking piece is provided with an inwards concave lock opening groove; the telescopic piece is arranged along the radial extension of the rotating shaft, so that when wind power is larger than preset locking wind power to enable the rotating shaft to drive the telescopic piece to rotate to align the lock opening groove, the telescopic piece which is locked in a contracting mode is triggered to be unlocked and then is inserted into the lock opening groove to lock the rotating shaft, and the telescopic piece is further used for being contracted and locked again after the telescopic piece which is unlocked in an extending mode gradually slides out of the lock opening groove when the wind power is lower than the preset locking wind power mechanical spring-twisting device to drive the rotating shaft to rotate.

Furthermore, the locking piece comprises a first locking piece and a second locking piece which are sequentially arranged at intervals along the rotation direction of the rotating shaft, the bottom ends of the first locking piece and the second locking piece are respectively fixed with the inner wall surface of the mounting channel, and a locking groove with an opening facing the rotating shaft is formed in a gap between the first locking piece and the second locking piece; the second locking block is provided with a triggering protrusion for triggering the automatic unlocking and extension of the telescopic piece, and the triggering protrusion faces to the rotating side of the telescopic piece.

Furthermore, the telescopic part comprises an outer cylinder and an inner cylinder which are sleeved with each other inside and outside, the mounting ends of the outer cylinder and the inner cylinder are respectively fixed with the outer wall surface of the rotating shaft, and the inner wall of the inner cylinder is provided with two clamping blocks which protrude outwards and are distributed oppositely; an elastic ring is arranged between the outer cylinder and the inner cylinder, the elastic ring is connected with a trigger button and a conflict button which are oppositely arranged, the trigger button is slidably arranged through the inner cylinder and the outer cylinder and is arranged corresponding to the trigger bulge, and the conflict button is slidably arranged through the inner cylinder and is propped against the inner wall of the outer cylinder; a clamping cone which is arranged in a sliding manner is arranged in the inner cylinder, the connecting end of the clamping cone is fixed with the outer wall surface of the rotating shaft through a compression spring, and the insertion end of the clamping cone is inserted into the lock opening groove; the link of card awl still is connected with two buckles of laying relatively, and two buckles correspond trigger button and conflict button setting respectively, and two buckles are blocked respectively and are locked the card awl when corresponding two fixture blocks that set up.

The invention has the following beneficial effects:

according to the novel bridge wind barrier, the wind pressure is resisted by utilizing the inherent rigidity of the wind barrier plate, different flow blocking and flow guiding effects are generated by utilizing different torque force settings of the mechanical elastic torsion device, mechanical, self-rotating and intelligent flow blocking and flow guiding are realized, the automation degree is high, the self-adaptive capacity to the environment is strong, the air permeability is self-adaptively adjusted according to the actual wind power, and the adjustment flexibility is high; the novel bridge wind barrier is controlled by the mechanical elastic torsion device, the device can normally operate under extreme weather as long as a mechanical structure is not damaged, and the real-time effect of the mechanical elastic torsion device can quickly respond to the change of a wind environment and is beneficial to dealing with the wind environment changing in real time; the intelligent flow blocking and flow guiding principle is characterized in that the rotation angle of the mechanical elastic torsion device is corresponding to the rotation angle of the rigid wind barrier, and the characteristic of adjustment is utilized, the wind barrier can generate different deflection angles under the action of different wind speeds according to the balance of the torque generated by wind force acting on the wind barrier, the torque generated by the mechanical elastic torsion device and the torque generated by the dead weight of the wind barrier, and airflow is diffused and guided along the surface of the wind barrier while part of wind pressure is blocked, so that the influence of wind load on a bridge and a vehicle is comprehensively optimized and controlled, the operation safety of the bridge and the vehicle and the driving comfort are ensured, and the intelligent flow blocking and flow guiding device is more intelligent, simple, safe, convenient, efficient and reasonable compared with the existing wind barrier structure.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic space structure diagram of a first embodiment of a novel bridge wind barrier according to a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional front view of the support column of FIG. 1;

FIG. 3 is a schematic space structure diagram of a second embodiment of the novel bridge wind barrier according to the preferred embodiment of the present invention;

FIG. 4 is a schematic end view of the support column of FIG. 1;

FIG. 5 is a schematic longitudinal cross-sectional view of the telescoping member and locking member of FIG. 4 shown unlocked;

FIG. 6 is a schematic longitudinal sectional view of the telescoping member of FIG. 4 shown in an unlocked position;

FIG. 7 is a schematic longitudinal sectional view of the locking mechanism of FIG. 4 with the telescoping member and locking member locked;

FIG. 8 is a schematic cross-sectional view of the telescoping member and locking member of FIG. 4 when unlocked;

fig. 9 is a cross-sectional view of the telescoping member and locking element of fig. 4 when locked.

Description of the figures

10. Supporting the upright post; 101. installing a channel; 20. a wind baffle; 30. a mechanical spring-torsion device; 31. a rotating shaft; 32. a spring member; 321. a fixing ring; 322. a torsion spring; 40. a limiting block; 50. a self-locking device; 51. a telescoping member; 511. an outer cylinder; 512. an inner barrel; 513. a clamping block; 514. an elastic ring; 515. a trigger button; 516. a touch button; 517. clamping a cone; 518. a compression spring; 519. buckling; 52. a locking member; 521. a fore shaft groove; 522. a first lock block; 523. a second lock block; 524. the trigger protrusion.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

Referring to fig. 1 and 3, a preferred embodiment of the present invention provides a novel bridge windbreak, including: the wind barrier plates 20 for resisting wind pressure are arranged on the supporting upright columns 10 or between two adjacent supporting upright columns 10. And a mechanical elastic device 30 is also arranged between the wind baffle plate 20 and the corresponding supporting upright 10, and the mechanical elastic device 30 is used for connecting the wind baffle plate 20 and the supporting upright 10 and supplying torque force for deflecting the wind baffle plate 20. The wind baffle plate 20 is used for deflecting around a horizontal axis or a vertical axis to ventilate and guide the airflow after overcoming the torque force applied to the wind baffle plate by the mechanical elastic torsion device 30 under the action of wind force, and the wind baffle plate 20 is also used for automatically rotating under the action of the torque force of the mechanical elastic torsion device 30 when the wind force is smaller than the torque force borne by the wind baffle plate.

According to the novel bridge wind barrier, the wind pressure is resisted by utilizing the inherent rigidity of the wind barrier plate 20, different flow blocking and flow guiding effects are generated by utilizing different torque force settings of the mechanical elastic torsion device 30, mechanical, self-rotating and intelligent flow blocking and flow guiding are realized, the automation degree is high, the self-adaptive capacity to the environment is strong, the air permeability is self-adaptively adjusted according to the actual wind power, and the adjustment flexibility is high; the novel bridge wind barrier is controlled by the mechanical elastic torsion device 30, the device can normally operate under extreme weather as long as a mechanical structure is not damaged, and the real-time effect of the mechanical elastic torsion device 30 can rapidly respond to the change of a wind environment and is beneficial to dealing with the wind environment changing in real time; the intelligent flow blocking and guiding principle is that the rotation angle of the mechanical elastic torsion device 30 corresponds to the rotation angle of the rigid wind barrier plate 20 and is adjustable, the wind barrier plate 20 generates different deflection angles under the action of different wind speeds according to the balance of the torque generated by the wind force acting on the wind barrier plate 20, the torque generated by the mechanical elastic torsion device 30 and the torque generated by the dead weight of the wind barrier plate 20, the airflow is diffused and guided along the plate surface of the wind barrier plate 20 while part of wind pressure is blocked, the influence of wind load on the bridge and the vehicle is comprehensively and optimally controlled, the operation safety and driving comfort of the bridge and the vehicle are ensured, and the intelligent flow blocking and guiding device is more intelligent, simple, safe, convenient, efficient and reasonable compared with the existing wind barrier structure.

Alternatively, as shown in fig. 2, the mechanical torsion device 30 includes a rotating shaft 31 connected to a side or a bottom edge of the wind baffle 20, and a torsion member 32 for supplying a torsion force, specifically, as shown in fig. 1, the rotating shaft 31 is connected to the side edge of the wind baffle 20; as shown in fig. 3, the rotation shaft 31 is connected to the bottom edge of the wind baffle 20. The rotating shaft 31 is rotatably inserted into the corresponding supporting column 10, and the rotating shaft 31 is disposed offset from the center axis of the wind baffle plate 20, so that the wind forces on the upper and lower parts of the wind baffle plate 20 at the axis of the rotating shaft 31 are different, and further, the wind force acting on the wind baffle plate 20 causes the wind baffle plate 20 to deflect directionally with the rotating shaft 31 as the axis. The elastic member 32 is installed on the outer circle of the rotation shaft 31, so that the wind barrier plate 20 can self-adapt to the deflection angle around the rotation shaft 31 after overcoming the torque force applied to the wind barrier plate by the elastic member 32 under the action of wind power, and the wind barrier plate 20 can automatically rotate under the action of the torque force of the elastic member 32 when the wind power is smaller than the torque force borne by the wind barrier plate.

In this alternative, as shown in fig. 2, the support column 10 is provided with a mounting channel 101 through which the rotating shaft 31 passes, and the rotating shaft 31 is rotatably mounted in the mounting channel 101 through mounting bearings mounted at both ends thereof. The torsion member 32 includes fixing rings 321 provided on outer circumferences of both ends of the rotary shaft 31, respectively, and a torsion spring 322 for supplying a torsion force. The fixing ring 321 is fixed in the installation passage 101. The torsion spring 322 is installed on the outer circle of the rotating shaft 31, the middle of the torsion spring 322 is fixed to the outer circle of the rotating shaft 31, and two ends of the torsion spring 322 are respectively fixed to the fixing rings 321 at the corresponding ends. In the embodiment of this alternative, the support columns 10 are fixed on the deck on both sides of the bridge; the cross section of the rotating shaft 31 is circular, so that the rotating shaft can be conveniently assembled and fixedly connected with the torsion spring 322; the connection position of the rotating shaft 31 and the wind barrier plate 20 adopts at least one connection mode of a bolt and a rivet; the joint of the rotating shaft 31 and the wind barrier plate 20 adopts ribbing to reduce the influence of stress concentration; the wind baffles 20, the rotating shafts 31 and the torsion springs 322 with different ground heights are made of the same material, rigidity and size, or the wind baffles 20, the rotating shafts 31 and the torsion springs 322 with different ground heights are made of at least one of different materials, different rigidities or different sizes according to different wind speeds with different ground heights.

In operation, as shown in fig. 2, two ends of the rotating shaft 31 are respectively connected to the wind barrier plates 20, and the connection point between the rotating shaft 31 and the wind barrier plates 20 should deviate from the shape axis of the wind barrier plates 20, so that the wind forces on the wind barrier plates 20 at the upper and lower parts of the axis of the rotating shaft 31 are different, thereby generating a rotatable torque, which is transmitted to the torsion spring 322 through the rotating shaft 31, and since two ends of the torsion spring 322 are respectively fixed to the fixing ring 321, the torsion spring 322 deforms to resist the rotation of the wind barrier plates 20, and accordingly, the wind penetration rate of the wind barrier under different wind speed conditions can be designed according to the distance between the axis of the rotating shaft 31 and the shape axis of the wind barrier plates 20, the stiffness of the torsion spring 322, the length of the torsion spring 322, and other parameters.

As shown in fig. 1, in the first embodiment of the wind barrier, the wind barrier plates 20 are vertically arranged, and a plurality of wind barrier plates 20 are sequentially arranged at intervals along the height direction of the support column 10, and both sides of each wind barrier plate 20 are respectively connected with the support column 10 on the corresponding side through a set of mechanical elastic devices 30, so that the wind barrier plates 20 rotate around the horizontal axis under the action of wind power. Or, as shown in fig. 3, in the second embodiment of the wind barrier, the wind barrier plate 20 is horizontally disposed, and the bottom end of the wind barrier plate 20 is connected to the corresponding support column 10 through a set of mechanical elastic devices 30, so that the wind barrier plate 20 rotates around the vertical axis under the action of wind force, in this case, the rotating shaft 31 and the elastic members 32 are disposed in the support column 10 at the lower part of the wind barrier plate 20, and the wind barrier plate 20 is provided with a sleeve at the axial position of the rotating shaft 31, the sleeve has a certain ground clearance requirement, and the rotating shaft 31 is prevented from being bent and damaged due to too large wind load acting on the wind barrier plate 20.

Optionally, in the actual design, the plate surface of the wind barrier plate 20 is a plane or a curved surface; the surface of the wind barrier plate 20 is provided with a through hole penetrating through the surface of the wind barrier plate or the surface of the wind barrier plate 20 is not provided with a through hole; the edges of the wind baffles 20 are straight lines or broken lines or curved lines, or the edges of the wind baffles 20 are provided with concave notches, the notches are in at least one of semi-circular shapes, semi-elliptical shapes, circular arc shapes, triangular shapes, trapezoidal shapes, rectangular shapes and polygonal shapes, the notches of the edges of two adjacent wind baffles 20 are symmetrically or asymmetrically arranged, and the measures are used for changing the wind permeability and the flow guiding characteristics of the wind baffles 20. In the actual design, the wind barrier plate 20 is a hollow plate or a dense plate; the wind baffle plate 20 has uneven mass distribution, so that the pivoting characteristic under the action of wind load is changed; when the wind baffle 20 is set to have uneven mass distribution, it is realized by at least one of the methods of different plate thickness distribution, different size distribution of cavities in the plate, different density distribution of the plate, different weight distribution of fillers in the inner cavity, filling of fluid in the inner cavity, and using a multi-layer plate with different layer numbers of plates.

In this alternative, different types of windbreak panels 20 may be sized for standardization, facilitating mass production. Different types of wind barrier plates 20 can be coated with different colors, patterns and characters, different scenes can be presented under different deflection angles, and beautiful elements are added to the wind barrier. The reserved gap between two adjacent wind baffle plates 20 can be composed of a circle, an ellipse, a rectangle, a prism, a polygon and the like, and the minimum size of the reserved gap is required to be larger than the minimum distance between the adjacent self-adaptive wind baffle plates so as to facilitate the free rotation of the wind baffle plates 20; gaps between the wind baffle plates 20 on two adjacent surfaces and gaps between the wind baffle plates 20 and the support upright post 10 are accurate for facilitating the wind baffle plates 20 to freely rotate, and are beneficial to obtaining the optimal ventilation rate of the vehicle-bridge system under any wind speed to a certain extent; the rotating shaft 31 is made of lightweight metal or other material having high rigidity to support the wind baffle 20 for rotation.

The wind baffle plate 20 is made of light metal rigid plates or other materials, has light weight, high rigidity and corrosion resistance, the tangential component of the mass of the wind baffle plate 20 along the rotation direction can be changed in the rotation process, the wind baffle plate can be made into a hollow or compact plate, the mass distribution of the wind baffle plate can be conveniently adjusted by changing fillers or other methods, so that the rotation characteristic of the wind baffle plate can be changed, the wind baffle plate 20 is connected with the rotating shaft 31 by using bolts or rivets without welding, and the wind baffle plate 20 is easy to separate, disassemble and install and can be easily replaced after being damaged. The wind baffle 20 is made of metal or other novel high-rigidity materials, and has the advantages of low manufacturing cost, convenience in installation and replacement and easiness in popularization. After determining the main idea of wind shielding by the wind baffle plate 20, the strength design of the support upright 10 and the rotating shaft 31, the rigidity, the size, the rotating mass moment, the fixed type of the wind baffle plate 20, the type and the length of the torsion spring 322 and the like need to be considered and designed in many aspects according to the specific bridge form, the wind speed, the wind shielding effect and the influence on the bridge and the train, and the system can summarize, classify and standardize specifications after researching different axle conditions and different wind shielding conditions, and can be directly applied to practice.

Optionally, as shown in fig. 4, the novel bridge wind barrier further includes a limiting block 40 for limiting the wind barrier plates 20 to deflect only in one direction, and the limiting block 40 is disposed on the support column 10 corresponding to each wind barrier plate 20. The mechanical elastic torsion device 30 is also used for applying an initial torsion force to the wind baffle 20, so that the wind baffle 20 abuts against the limiting block 40 on one side of the rotating shaft 31 when the wind baffle 20 is vertical. When the wind barrier works, when the wind barrier is normally used, the wind barrier plate 20 keeps an upright state and abuts against the limiting block 40, and the contact surface between the limiting block 40 and the wind barrier plate 20 is made of rubber; the initial stress applied on the torsion spring 322 is transmitted to the wind barrier plate 20 through the rotating shaft 31 connected with the torsion spring, so that the wind barrier plate 20 abuts against the limiting block 40 when no wind exists, when the wind speed reaches a certain magnitude, the wind force acting on the wind barrier plate 20 counteracts the initial stress, and the rotating shaft 31 drives the wind barrier plate 20 to start rotating. Because the limiting block 40 is arranged, prestress can be applied to the torsion spring 322 through the limiting block 40, the windbreak plate 20 is kept in a vertical closed state within a certain wind speed, the principle is that the prestress applied to the torsion spring 322 enables the rotating shaft 31 and the limiting block 40 to be in a tight state in the absence of wind, only when the wind speed reaches a certain magnitude, wind force acting on the windbreak plate 20 offsets with the prestress of the torsion spring 322, the rotating shaft 31 can start to rotate, the windbreak can be better utilized at a low wind speed, and better protection is provided for driving of a bridge.

Optionally, as shown in fig. 5 to 9, the novel bridge windbreak further includes a self-locking device 50, and the self-locking device 50 is disposed between the mechanical elastic torsion device 30 and the corresponding installation channel 101. The self-locking device 50 is used for automatically locking the wind baffle plate 20 when the wind power is greater than the preset locking wind power so as to prevent the wind baffle plate 20 from reciprocating deflection damage under the action of high-frequency wind power, and the self-locking device 50 is also used for automatically unlocking the wind baffle plate 20 when the wind power is lower than the preset locking wind power. According to the novel bridge wind barrier, the self-locking device 50 is arranged between the mechanical elastic torsion device 30 and the corresponding installation channel 101, so that when the wind speed is increased to a certain degree according to the corresponding relation between the wind speed and the rotating angle of the rotating shaft 31, the self-locking device 50 is triggered to lock the rotating shaft 31 at a determined angle, and further the wind barrier plate 20 is locked at a determined angle; when the wind speed is reduced and is lower than a certain threshold value, the locking of the rotating shaft 31 is released, so that the damage of the reciprocating motion of the wind baffle plate 20 caused by the pulsation of the incoming flow in the high-frequency wind speed in the actual environment is avoided.

In this alternative, as shown in fig. 4, the self-locking device 50 includes an expansion member 51 fixed to an outer wall surface of the rotating shaft 31, and a locking member 52 fixed to an inner wall surface of the installation passage 101 and provided corresponding to the expansion member 51, and the locking member 52 is provided with a concave locking groove 521. The telescopic member 51 is arranged in a telescopic manner along the radial direction of the rotating shaft 31, so that when wind power is larger than preset locking wind power, the rotating shaft 31 drives the telescopic member 51 to rotate to align with the locking notch 521, the telescopic member 51 which is locked in a telescopic manner is triggered to be unlocked and then inserted into the locking notch 521 to lock the rotating shaft 31, and the telescopic member 51 is further used for being contracted and locked again after the telescopic member 51 which is unlocked in an extending manner gradually slides out of the locking notch 521 when the wind power is lower than the preset locking wind power mechanical elastic-twisting device 30 to drive the rotating shaft 31 to rotate.

In the present alternative embodiment, as shown in fig. 5, the locking member 52 includes a first locking piece 522 and a second locking piece 523 that are sequentially disposed at intervals in the rotation direction of the rotation shaft 31, bottom ends of the first locking piece 522 and the second locking piece 523 are respectively fixed to an inner wall surface of the mounting passage 101, and a gap between the first locking piece 522 and the second locking piece 523 forms a locking notch 521 that opens toward the rotation shaft 31. Preferably, the locking notch 521 is a tapered notch, and the tapered notch gradually increases from the closed end to the open end; the second lock block 523 is provided with a trigger protrusion 524 for triggering the telescopic member 51 to automatically unlock the extension, and the trigger protrusion 524 faces the rotation side of the telescopic member 51.

In the alternative embodiment, as shown in fig. 5, the telescopic member 51 includes an outer cylinder 511 and an inner cylinder 512 which are sleeved with each other, the mounting ends of the outer cylinder 511 and the inner cylinder 512 are fixed to the outer wall surface of the rotating shaft 31, and two latch blocks 513 which protrude outwards and are arranged oppositely are disposed on the inner wall of the inner cylinder 512. An elastic ring 514 is arranged between the outer cylinder 511 and the inner cylinder 512, the elastic ring 514 is connected with a trigger button 515 and an interference button 516 which are oppositely arranged, the trigger button 515 is slidably arranged through the inner cylinder 512 and the outer cylinder 511 and is arranged corresponding to the trigger protrusion 524, and the interference button 516 is slidably arranged through the inner cylinder 512 and is abutted against the inner wall of the outer cylinder 511. The inner cylinder 512 is provided with a sliding block cone 517, the connecting end of the block cone 517 is fixed with the outer wall surface of the rotating shaft 31 through a compression spring 518, and the inserting end of the block cone 517 is inserted into the locking slot 521. The connecting end of the clamping cone 517 is further connected with two buckles 519 which are arranged oppositely, the two buckles 519 are arranged corresponding to the trigger button 515 and the touch button 516 respectively, and the clamping cone 517 is locked when the two buckles 519 are clamped into the two clamping blocks 513 which are arranged correspondingly respectively. During actual design, the outer peripheral wall of the large end of the clamping cone 517 is tightly attached to the inner peripheral wall of the inner cylinder 512 so as to limit and guide the sliding of the clamping cone 517, and proper materials can be selected during design so as to reduce the friction between the clamping cone 517 and the inner cylinder 512, so that the clamping cone 517 can slide along the inner peripheral wall of the inner cylinder 512; the bottom of the buckle 519 is connected with the connecting end of the clamping cone 517 through a one-way bearing, and the one-way bearing is used for limiting the buckle 519 to rotate only towards the inner side.

The self-locking device 50 has the following action principle:

when the telescopic member 51 and the locking member 52 are unlocked, as shown in fig. 5 and 8, the compression spring 518 is in a compressed state, the buckle 519 is buckled on the correspondingly arranged fixture block 513 through the groove on the outer wall of the buckle 519, and the outer wall surface of the buckle 519 is respectively abutted against the correspondingly arranged trigger button 515 and the abutting button 516, at this time, the elastic ring 514 can be free from stress, and initial stress which enables the trigger button 515 to move towards the outer cylinder 511 can also be applied; along with the increase of wind power on the wind baffle 20, when the rotating shaft 31 drives the telescopic member 51 to rotate for a certain angle and the cone 517 aligns with the locking notch 521, the trigger protrusion 524 contacts with the trigger button 515 and moves inwards under the pushing force of the trigger protrusion 524, and meanwhile, the movement of the trigger button 515 presses the elastic ring 514, so that the contact point of the elastic ring 514 and the interference button 516 pushes the interference button 516 to move inwards; by adjusting the contact point of the elastic ring 514 and the outer cylinder 511, the distance between the outer cylinder 511 and the inner cylinder 512, or adding a spring, the trigger button 515 and the interference button 516 push the two buckles 519 to rotate inwards together until the buckles 519 disengage from the fixture block 513, as shown in fig. 6, and at this time, the fixture cone 517 is ejected out under the push of the compression spring 518 and inserted into the locking groove 521, as shown in fig. 7; then, if the wind speed is reduced, the mechanical elastic twisting device 30 drives the rotating shaft 31 to rotate, the bayonet cone 517 is extruded by the inner wall of the locking notch 521 and cannot be separated from the locking notch 521 immediately, that is, the rotating shaft 31 cannot rotate back immediately; when the wind force on the wind barrier plate 20 is as small as the preset locking wind force, the torsion spring 322 drives the rotating shaft 31 to rotate, so that the blocking cone 517 climbs to the top of the locking notch 521, and meanwhile, the buckle 519 at the bottom of the blocking cone 517 is just buckled on the corresponding blocking block 513, so as to be separated from the locking notch 521, and the self-locking device 50 is unlocked.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel bridge windbreak, comprising:

the wind barrier plates are sequentially arranged on the supporting columns (10) at intervals on two sides of the bridge along the extending direction of the bridge, and the wind barrier plates (20) used for resisting wind pressure are arranged on the supporting columns (10) or between two adjacent supporting columns (10);

a mechanical elastic-torsion device (30) is further arranged between the wind baffle plate (20) and the supporting upright (10) on the corresponding side, and the mechanical elastic-torsion device (30) is used for connecting the wind baffle plate (20) and the supporting upright (10) and supplying torque force for deflecting the wind baffle plate (20);

the wind baffle plate (20) is used for deflecting around a horizontal axis or a vertical axis to ventilate and guide airflow after overcoming the torque force applied to the wind baffle plate by the mechanical elastic-torsional device (30) under the action of wind power, and the wind baffle plate (20) is also used for automatically rotating under the action of the torque force of the mechanical elastic-torsional device (30) when the wind power is smaller than the torque force borne by the wind baffle plate;

the mechanical elastic torsion device (30) comprises a rotating shaft (31) connected with the side edge or the bottom edge of the wind baffle plate (20) and an elastic torsion member (32) for supplying elastic torsion; the rotating shaft (31) is rotatably arranged in the supporting upright post (10) on the corresponding side in a penetrating way, and the rotating shaft (31) is arranged by deviating from the shape center axis of the wind baffle plate (20) so that the wind force acting on the wind baffle plate (20) can make the wind baffle plate (20) deflect directionally by taking the rotating shaft (31) as the axis center; the elastic torsion member (32) is arranged on the excircle of the rotating shaft (31), so that the wind baffle plate (20) can self-adapt to a deflection angle around the rotating shaft (31) after overcoming the torque force applied to the wind baffle plate by the elastic torsion member (32) under the action of wind power, and the wind baffle plate (20) can automatically rotate under the action of the torque force of the elastic torsion member (32) when the wind power is smaller than the torque force borne by the wind baffle plate;

the novel bridge wind barrier further comprises a limiting block (40) used for limiting the wind barrier plates (20) to deflect towards one direction only, and the limiting block (40) is arranged on the supporting upright post (10) corresponding to each wind barrier plate (20); the mechanical elastic torsion device (30) is also used for applying initial torsion of the wind baffle plate (20) so that the wind baffle plate (20) abuts against the limiting block (40) on one side of the rotating shaft (31) when the wind baffle plate is vertical.

2. The new bridge windbreak of claim 1,

the supporting upright post (10) is provided with an installation channel (101) for the rotating shaft (31) to penetrate through, and the rotating shaft (31) is rotatably arranged in the installation channel (101) through installation bearings arranged at two ends of the rotating shaft;

the elastic torsion component (32) comprises fixing rings (321) which are respectively arranged on the outer circles of two ends of the rotating shaft (31) and a torsion spring (322) for supplying elastic torsion;

the fixing ring (321) is fixed in the mounting channel (101);

the torsion spring (322) is arranged on the excircle of the rotating shaft (31), the middle part of the torsion spring (322) is fixed with the excircle of the rotating shaft (31), and two ends of the torsion spring (322) are respectively fixed with the fixing rings (321) at the corresponding ends.

3. The new bridge windbreak of claim 1,

the wind baffle plates (20) are vertically arranged, a plurality of wind baffle plates (20) are sequentially arranged at intervals along the height direction of the supporting upright columns (10), and two sides of each wind baffle plate (20) are respectively connected with the supporting upright columns (10) on the corresponding side through a group of mechanical elastic devices (30) so that the wind baffle plates (20) rotate around a horizontal shaft under the action of wind power; or

The wind baffle plate (20) is horizontally arranged, and the bottom end of the wind baffle plate (20) is connected with the corresponding support upright post (10) through a group of mechanical elastic devices (30), so that the wind baffle plate (20) rotates around a vertical shaft under the action of wind power.

4. The new bridge windbreak of claim 1,

the surface of the wind baffle plate (20) is a plane or a curved surface;

the surface of the wind baffle plate (20) is provided with a through hole penetrating through the surface;

the edge of the wind baffle plate (20) is a straight line edge, a broken line edge or a curved line edge, or the edge of the wind baffle plate (20) is provided with a concave notch;

the wind baffle plate (20) is a hollow plate or a dense plate;

the wind baffle (20) has an uneven mass distribution.

5. The new bridge windbreak of claim 2,

the novel bridge windbreak further comprises a self-locking device (50), and the self-locking device (50) is arranged between the mechanical elastic torsion device (30) and the corresponding installation channel (101);

the self-locking device (50) is used for automatically locking the wind baffle plate (20) when wind power is larger than preset locking wind power so as to prevent the wind baffle plate (20) from reciprocating deflection damage under the action of high-frequency wind power, and the self-locking device (50) is also used for automatically unlocking the wind baffle plate (20) when the wind power is lower than the preset locking wind power.

6. The new bridge windbreak of claim 5,

the self-locking device (50) comprises an expansion piece (51) fixed with the outer wall surface of the rotating shaft (31) and a locking piece (52) fixed with the inner wall surface of the mounting channel (101) and arranged corresponding to the expansion piece (51), and an inwards concave locking notch groove (521) is formed in the locking piece (52);

the telescopic piece (51) is arranged in a telescopic mode along the radial direction of the rotating shaft (31) and used for enabling the rotating shaft (31) to drive the telescopic piece (51) to rotate to be aligned with the lock opening groove (521) when wind power is larger than preset locking wind power, the telescopic piece (51) which is locked in a telescopic mode is contracted and inserted into the lock opening groove (521) to lock the rotating shaft (31) after being triggered to be unlocked, and the telescopic piece (51) is further used for being extended and unlocked when the wind power is lower than the preset locking wind power and the mechanical elastic-twisting device (30) drives the rotating shaft (31) to rotate, and the telescopic piece (51) which is unlocked in an extending mode gradually slides out of the lock opening groove (521) and then is contracted and locked again.

7. The new bridge windbreak of claim 6,

the locking piece (52) comprises a first locking piece (522) and a second locking piece (523) which are sequentially arranged at intervals along the rotation direction of the rotating shaft (31), the bottom ends of the first locking piece (522) and the second locking piece (523) are respectively fixed with the inner wall surface of the mounting channel (101), and a gap between the first locking piece (522) and the second locking piece (523) forms the locking notch groove (521) with an opening facing the rotating shaft (31);

the second locking block (523) is provided with a triggering protrusion (524) for triggering the telescopic piece (51) to automatically unlock the extension, and the triggering protrusion (524) faces the rotating side of the telescopic piece (51).

8. The new bridge windbreak of claim 7,

the telescopic part (51) comprises an outer cylinder (511) and an inner cylinder (512) which are sleeved with each other, the mounting ends of the outer cylinder (511) and the inner cylinder (512) are respectively fixed with the outer wall surface of the rotating shaft (31), and two clamping blocks (513) which protrude outwards and are distributed oppositely are arranged on the inner wall of the inner cylinder (512);

an elastic ring (514) is arranged between the outer cylinder (511) and the inner cylinder (512), the elastic ring (514) is connected with a trigger button (515) and an interference button (516) which are oppositely arranged, the trigger button (515) is slidably arranged through the inner cylinder (512) and the outer cylinder (511) and is arranged corresponding to the trigger protrusion (524), and the interference button (516) is slidably arranged through the inner cylinder (512) and is abutted against the inner wall of the outer cylinder (511);

a clamping cone (517) which is arranged in a sliding manner is arranged in the inner cylinder (512), the connecting end of the clamping cone (517) is fixed with the outer wall surface of the rotating shaft (31) through a compression spring (518), and the insertion end of the clamping cone (517) is used for being inserted into the locking notch groove (521);

the connecting end of the clamping cone (517) is further connected with two buckles (519) which are arranged oppositely, the buckles (519) correspond to the trigger button (515) and the conflict button (516) respectively, and the buckles (519) are clamped into the corresponding blocks (513) respectively to lock the clamping cone (517).