A bidirectional rotatable wind-resistant support

Abstract

The application discloses a kind of anti-wind support with two-way rotatable. How to effectively release the stress of support end under wind load is a problem to be solved in the development of high-speed railway outer covering type sound barrier technology. The bottom slide is provided with a circular arc-shaped sliding groove in the front-rear direction, and the circular arc-shaped rim of the movable web is slidingly connected in the circular arc-shaped sliding groove. The lower part of the rim is circular in cross section. The circular arc-shaped rim and the circular arc-shaped sliding groove are the same in shape. The top of the movable web is provided with a hinge lower hinge. The bottom of the support head is provided with a hinge upper hinge. The hinge upper hinge and the hinge lower hinge are provided with a bolt rod. The top end of the hinge lower hinge is provided with a rotating groove. The application realizes two-way rotatable function through hinge device and circular arc-shaped sliding groove. When the wind load is large, the support end bears tensile force, pressure, shear force and bending moment from all directions, and through front-rear direction rotation and left-right direction rotation, the end stress can be effectively released.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of high-speed railway external covering type sound barrier device, and particularly relates to a bidirectional rotatable wind-resistant support. BACKGROUND

[0002] The large-scale construction of high-speed railways inevitably brings about serious noise pollution problems, and the sound barrier is one of the effective ways to solve the noise along the high-speed railway. With the continuous advancement of high-speed railway construction, the situation of high-speed railway passing through residential areas is becoming more and more frequent, and the requirements for the noise reduction and safety performance of the high-speed railway sound barrier are also becoming higher and higher. However, the metal sound insulation board in the external covering type sound barrier device has a large stress area and a light self-weight, and is therefore very sensitive to wind load effect. Under the influence of typhoon, gale and other severe weather conditions, many accidents of metal sound insulation board being damaged or even lifted by strong winds have occurred at home and abroad, which seriously affects the safety of train operation and the safety of residents along the line.

[0003] After analyzing the wind-resistant lifting test results of the external covering type sound barrier, it is found that the existing sound barrier system under wind load is generally damaged in the form of the separation of the internal clamp of the outer sound insulation board and the lock edge aluminum alloy plate. Under the wind load, the lock edge aluminum alloy plate is arched and deformed, and the clamp at the lock port is subjected to upward separating force and horizontal force at the same time. The horizontal force increases with the increase of wind load level, eventually enlarges the lock edge port, reduces the occlusal force at the lock port, and finally separates from the support under the action of vertical tension, so that the sound barrier system is damaged. How to effectively release the stress at the end of the support under the action of wind load, so as to keep the occlusal force between the metal clamp and the lock edge aluminum alloy plate and the support normal, is a problem to be solved in the development process of the current high-speed railway external covering type sound barrier technology.

[0004] When the sound barrier is subjected to wind load, the outermost outer sound insulation board is mainly stressed, and then the load is transmitted to the metal clamp connected with the inner sound insulation board. Under the action of negative wind pressure, the inner sound insulation board deforms, the edge of the inner sound insulation board is opened, and then the connection between the inner sound insulation board and the support and the metal clamp is damaged. In view of the above problems, the flexibility of the support connected with the inner sound insulation board and the connection performance between the inner sound insulation board need to be improved. In the existing related technology, the movable property of the metal support is generally improved by the one-way rotatable function, and then the concentrated stress caused by deformation is released. Although this can improve the above problems to a certain extent, the stress inside the sound barrier under the action of wind load is very complex, and the arch deformation of the metal panel may occur in the front, back, left and right four directions. The left and right rotation can only release the end stress of the lock edge aluminum alloy plate caused by deformation in the left and right two directions of the support, and it is difficult to release the stress at the end of the support caused by the deformation of the lock edge aluminum alloy plate on the front and back sides of the support along the axis direction of the lock edge of the inner sound insulation board. In the existing related technology, the connection strength between the support and the lock edge aluminum alloy plate is generally improved by setting a bolt rod at the head of the support. This can improve the connection performance to a certain extent, but the linkage between the metal clamp and the lock edge aluminum alloy plate is poor, and the biting force of the connection part between the clamp and the lock edge aluminum alloy plate cannot be improved. SUMMARY

[0005] In order to make up for the shortcomings of the prior art, the present application provides a bidirectional rotatable wind-resistant support, which has a reasonable structure, good vibration reduction effect, and can make the metal roof have overall wind resistance, thermal expansion and contraction resistance and deformation resistance.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0007] A bidirectional rotatable wind-resistant support, characterized in that it comprises a bottom sliding seat, wherein the bottom sliding seat is internally provided with a circular-arc-shaped sliding groove in the front-rear direction;

[0008] The circular-arc-shaped ear edge of the movable web bottom is slidably connected in the circular-arc-shaped sliding groove; the lower part of the ear edge is circular in cross section; the circular-arc-shaped ear edge and the circular-arc-shaped sliding groove are the same in shape; the rotation angle of the movable web is limited by the buckle and the circular-arc-shaped sliding groove; the arc length of the circular-arc-shaped sliding groove is L1, and the arc length of the outer edge of the circular-arc-shaped ear edge is L2, L2=0.7L1~0.8L1;

[0009] A hinge lower hinge is arranged at the top of the movable web, and a hinge upper hinge is arranged at the bottom of the support head; a bolt rod is arranged in the hinge upper hinge and the hinge lower hinge; and a rotating groove is arranged at the top end of the hinge lower hinge.

[0010] Further, side convex parts are symmetrically arranged on the left and right sides of the support head;

[0011] Further, bolt holes are symmetrically arranged on the bottom sliding seat;

[0012] Further, the circular arc-shaped ear is filled with damping grease between the circular arc-shaped sliding groove;

[0013] Further, the circular arc-shaped sliding groove is provided with a slot structure at both ends, a buckle is arranged in the slot structure, and the two ends of the circular arc-shaped ear are arranged in the center hole on the buckle; the buckle is single-sided spot welded with the boundary around the slot, the thickness of the buckle is d1, the thickness of the closed end of the bottom sliding seat 1 is d2, and d1>d2, d2=0.8-0.9mm;

[0014] Further, a rubber damping sheet is arranged between the buckle and the circular arc-shaped ear;

[0015] Further, the hinge blocking interval of the hinge lower hinge is d3, the hinge blocking interval of the hinge upper hinge is d4, and d3>d4; the hinge upper hinge aperture diameter is a, the hinge lower hinge aperture diameter is b, and the bolt rod diameter is c, and a=b=c+2W, W is the thickness of the lock edge aluminum alloy plate; W=1.0mm, a=4.0-5.5mm, d4=19.0-21.5mm;

[0016] Further, the rotating groove is U-shaped, and both sides are provided with a blocking protrusion limiting the rotation angle, and the protrusion height is U, and U=0.2V, wherein V is the outer diameter of the hinge lower hinge, V=12.0mm;

[0017] Further, the side protruding part is composed of four rib strips at the middle position of the support head, the rib strip protruding length is D1, and D1=0.8D-W-X; wherein, D is the thickness of the support head, D=12.0mm, W is the thickness of the lock edge aluminum alloy plate, and X is the thickness of the special-shaped metal clamp buckle part; the rib strip thickness is D2, and D2>0.2D1; the interval between the two inclined ribs is D3, and D3>2(W+X).

[0018] The beneficial effects of the present application are:

[0019] 1) The present application realizes the bidirectional rotating function through the hinge device and the circular arc-shaped sliding groove. In the case that the support end bears the complex stress from the tension, pressure, shear force and bending moment in all directions under large wind load, the end stress can be effectively released through the front-back direction rotation and left-right direction rotation, and the rotation is more flexible compared with the traditional wind-resistant support.

[0020] 2) The side protruding part is arranged at the support head in the present application, and the lock edge aluminum alloy plate above the support is tightly buckled with the side protruding part of the support head after being locked by the lock edge machine, so that the contact area of the lock edge aluminum alloy plate and the support head is increased, the engagement force between the support head and the lock edge aluminum alloy plate is enhanced, and the connection performance of the wind-resistant support and the aluminum alloy lock edge aluminum alloy plate is improved under the influence of wind load and temperature load. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is a structural schematic diagram of the web of the present application;

[0023] Figure 3 is a structural schematic diagram of the upper part of the web of the present application;

[0024] Figure 4 is a structural schematic diagram of the lower part of the web of the present application;

[0025] Figure 5 is a structural schematic diagram of the connecting screw of the upper and lower parts of the web of the present application;

[0026] Figure 6 is a structural schematic diagram of the whole of the bottom slide of the present application;

[0027] Figure 7 is a sectional axonometric view of the bottom slide of the present application;

[0028] Figure 8 is a sectional front view of the bottom slide of the present application;

[0029] Figure 9 is a structural schematic diagram of the sliding slot buckle of the present application;

[0030] Figure 10 is a working state schematic diagram of the present application;

[0031] Figure 11 is a lap joint schematic diagram of the hemmed aluminum alloy plate of the present application;

[0032] Figure 12 is a front view of the support head of the present application;

[0033] Figure 13 is a sectional front view of the hinge device of the present application;

[0034] Figure 14 is a side view of the web of the present application;

[0035] 1 - bottom slide, 11 - bolt hole, 12 - buckle, 13 - damping grease, 14 - circular arc-shaped sliding slot; 2 - movable web, 21 - circular arc-shaped ear, 22 - hinge lower hinge, 221 - rotating groove; 3 - bolt rod; 4 - support head, 41 - side protruding part; 42 - hinge upper hinge; 5 - hemmed aluminum alloy plate, 51 - lap joint part, 511 - side standing plate, 512 - hemming assembly. DETAILED DESCRIPTION

[0036] The present application will be described in detail below in conjunction with specific embodiments.

[0037] The wind-resistant support provided by this invention can achieve rotation in the front-to-back direction at the base and left-to-right rotation and translation at the hinge device, thereby effectively solving the problem of stress at the support not being released in time under excessive wind and temperature loads, leading to structural damage. Figure 10 As shown.

[0038] like Figure 1 As shown, the wind-resistant support of the present invention includes a bottom slide 1, and an arc-shaped groove 14 is provided inside the bottom slide 1 along the front-back direction; the arc-shaped lug 21 at the bottom of the movable web 2 is slidably connected to the arc-shaped groove 14, and damping grease 13 is filled between the arc-shaped lug 21 and the arc-shaped groove 14; after assembly, the airtightness is good, and the overall rigidity of the lower part of the support is guaranteed.

[0039] like Figure 7 , 14 As shown, the lower cross-section of the lug is circular, with a large bearing area, and the upper load is evenly transferred to the bottom slide. The arc-shaped lug 21 has the same shape as the arc-shaped slide groove 14, but its width and outer arc length are smaller than those of the arc-shaped slide groove 14. The rotation angle of the movable web plate 2 is limited by the buckle 12 and the arc-shaped slide groove 14. The arc length of the arc-shaped slide groove 14 is L1, and the outer arc length of the arc-shaped lug 21 is L2. After assembly, the arc-shaped lug 21 is completely inside the arc-shaped slide groove 14, and L2 = 0.7L1~0.8L1, L1 = 160.0~180.0mm.

[0040] like Figure 6 As shown, bolt holes 11 are symmetrically arranged on the bottom slide 1, thereby fixing the entire wind-resistant support to the purlins of the roof structure.

[0041] like Figure 4 As shown, a lower hinge 22 is provided at the top of the movable web plate 2; an upper hinge 42 is provided at the bottom of the support head 4; a bolt 3 is provided inside the upper hinge 42 and the lower hinge 22; and a rotating groove 221 is provided at the top of the lower hinge 22.

[0042] The hinge blocking interval in the lower hinge 22 is d3, and the blocking interval in the upper hinge 42 is d4, with d3 > d4. The opening diameter of the upper hinge 42 is a, the opening diameter of the lower hinge 22 is b, and the diameter of the bolt 3 is c, where a = b = c + 2W, and W is the thickness of the locking edge aluminum alloy plate; W = 1.0 mm, a = 4.0~5.5 mm, and d4 = 19.0~21.5 mm. The hinge opening diameter is larger than the bolt diameter, and there is a gap between the upper and lower hinge blocking intervals that allows the support head to move back and forth. When the locking edge aluminum alloy plate is subjected to external wind loads and thermal expansion and contraction, the small deformation of the upper and lower hinges can be offset by the small translational movements of the upper and lower hinges.

[0043] like Figure 13As shown, the rotating groove 221 is a right-angle U-shaped, the height of the two sides is U, and U=0.2V, where V is the diameter of the outer edge of the hinge lower hinge 22, V=12.0mm. The rotating groove 221 limits the rotating angle range of the support head 4 to be one half of the rotating angle range of the web lower ear in the circular arc-shaped sliding groove, and the rotating angle range of the support head is α When the metal lock edge aluminum alloy plate is deformed in the form of arching under wind load, the traditional support cannot rotate left and right at the support head, so that the horizontal force on the clamp at the lock port increases with the deformation, and further causes the engagement force to decrease and the pull-out damage to occur. The hinge device can swing left and right to offset the deformation and reduce the horizontal force on the clamp at the lock port.

[0044] As shown in Figure 2 , 3 , the side convex part 41 is symmetrically arranged on the left and right sides of the support head 4, and the side convex part 41 improves the connection performance by the engagement force between the entire support and the lock edge aluminum alloy plate and the metal clamp, thereby effectively reducing the risk of disengagement damage of the clamp and the lock edge aluminum alloy plate under the condition of deformation of the aluminum alloy plate caused by wind load.

[0045] As shown in Figure 12 , the side convex part 41 is composed of four rib strips at the middle position of the support head 4, the rib strip protrudes a length of D1, and D1=0.8D-W-X; wherein D is the thickness of the support head, D=12.0mm, W is the thickness of the lock edge aluminum alloy plate 6, and X is the thickness of the shaped metal clamp buckle part; the rib strip thickness is D2, and D2>0.2D1; the interval between the two inclined ribs is D3, and D3>2W+X. The rib strip interval is moderate, which facilitates the installation of the clamp while enhancing the tightness between the support head, the lock edge aluminum alloy plate and the clamp, and the rigidity of the device at this position.

[0046] As shown in Figure 8 , the circular arc-shaped sliding groove 14 is provided with a slot structure at both ends; the buckle 12 is arranged in the slot structure, and the both ends of the circular arc-shaped ear 21 are arranged in the center hole on the buckle 12, as shown in Figure 9 . The buckle 12 is single-sided spot welded with the boundary around the slot, the thickness of the buckle 12 is d1, the thickness of the closed end of the bottom sliding seat 1 is d2, and d1>d2, d2=0.8~0.9mm, the size can be adjusted according to the actual situation; the assembly process is efficient and convenient, and the processing difficulty of the factory is reduced.

[0047] The rubber damping sheet is arranged between the buckle 12 and the arc-shaped ear 21, the arc-shaped ear is mounted to the arc-shaped sliding groove, the inner surface of the ear and the sliding groove is filled with damping grease, the gap between the ear and the arc-shaped sliding groove is filled with the damping grease, and then the buckle provided with the rubber damping sheet is inserted into the base slot.

[0048] As shown in Figure 11 The two ends of the adjacent lock edge aluminum alloy plates are provided with a lap joint part 51, the lap joint part comprises two ribbed side plates 511 of the lock edge aluminum alloy plates and a hemming assembly 512 connected to the top ends of the two ribbed side plates, one side plate top end is an inner buckle hem, and the other side plate top end is an outer buckle hem, the top hem of the two side plates is buckled to each other, the side plate rib is engaged with the side convex part 41 of the support head, the connection strength between the lock edge aluminum alloy plate and the wind-resistant support is improved, and the integrity and stability of the sound barrier device are enhanced, the side convex part is composed of four rib strips at the middle position of the support head, the rib strip protruding length is D1, and D1 = 0.8D - W - X, D is the thickness of the support head, W is the thickness of the lock edge aluminum alloy plate, and X is the thickness of the special-shaped metal clamp buckle part, the metal clamp mounting position is reserved, according to the actual situation, the metal clamp with a clamping groove corresponding to the rib strip of the lock edge aluminum alloy plate is used and clamped at the rib strip part of the side plate, the metal clamp is engaged with the rib strip, so that the wind-resistant support, the lock edge aluminum alloy plate and the clamp clamping part are closely connected, and the rigidity and wind resistance of the sound barrier device at the position are improved.

[0049] The installation method of the present application is as follows:

[0050] In the assembly process of the lower part of the support, the movable web plate 2 is held, the damping grease 13 is filled on the surface of the arc-shaped ear 21 and the arc-shaped sliding groove 14 of the lower part of the web plate, the arc-shaped ear 21 is slid along the arc-shaped sliding groove 14 after uniform coating, and the ear inner edge is completely covered with the damping grease 13, the worker should pay attention to slightly rotate the web plate along the sliding groove during the process, so that the damping grease completely fills the gap and avoids the generation of bubbles;

[0051] After the damping grease is filled, the buckle 12 is inserted along the sliding seat slot, the buckle 12 is inserted into the bottom of the slot, single-sided spot welding is carried out along the boundary between the buckle and the slot, and after confirming that the welding is good in the sealing performance of the device, the assembly of the lower part of the support is completed;

[0052] As shown in Figure 5As shown, the bolt rod 3 is circular in cross section with a diameter c, the upper hinge hole 42 has a diameter a, the lower hinge hole 22 has a diameter b, and a = b = c + 2W, W being the thickness of the aluminum alloy edge-locked plate 6; the bolt rod has a fixed section and a threaded end, and a gasket is arranged at each end;

[0053] During assembly of the upper part of the support, the lower hinge hole 22 and the upper hinge hole are aligned, the bolt rod 3 is inserted through the holes, and the threaded end is screwed into the compression gasket, thereby completing assembly of the upper part of the support.

[0054] The aluminum alloy edge-locked plate and the support framework of the sound barrier device are connected and fixed by a plurality of wind-resistant supports, and the installation process is as follows: the wind-resistant support and the perforated bottom plate are connected and fixed to the framework purlin by bolts, wherein the perforated bottom plate functions to form a sealed space with the aluminum alloy edge-locked plate, i.e., the inner sound insulation plate, and an acoustic absorption layer is arranged therebetween; the outermost outer sound insulation plate of the sound barrier is clamped to the locking protrusion of the inner sound insulation plate by a metal clamp and is fixed to the inner sound insulation plate; in order to improve the connection strength of the aluminum alloy edge-locked plate and the support head to resist large external wind loads, a side protrusion is arranged at the support head, the principle being that the aluminum alloy edge-locked plate above the support is locked by a locking machine after locking, and a tight clamping connection is formed with the side protrusion of the support head, thereby increasing the contact area of the aluminum alloy edge-locked plate and the support head and enhancing the clamping force between the support head and the aluminum alloy edge-locked plate, thereby improving the connection performance of the wind-resistant support and the aluminum alloy edge-locked plate under the influence of wind loads and temperature loads; in the case where a metal clamp is arranged to install the outer sound insulation plate, the side protrusion of the aluminum alloy edge-locked plate connection is clamped with the clamping part of the metal clamp, thereby improving the clamping effect of the wind-resistant clamp on the aluminum alloy edge-locked plate and reducing the possibility of pull-out failure under the influence of wind loads;

[0055] The content of the present application is not limited to the examples listed, and any equivalent transformation of the technical solutions of the present application made by a person of ordinary skill in the art by reading the specification of the present application is covered by the claims of the present application.

Claims

1. A bi-directionally rotatable wind resistant support, characterized by: It comprises a bottom slide (1), which is internally provided with a circular-arc-shaped sliding groove (14) along the front-rear direction; A circular-arc-shaped ear rim (21) at the bottom of the movable web (2) is slidingly connected in the circular-arc-shaped sliding groove (14); the lower part of the ear rim is circular in cross section; the circular-arc-shaped ear rim (21) is the same in shape as the circular-arc-shaped sliding groove (14); the rotating angle of the movable web (2) is limited by the buckle (12) and the circular-arc-shaped sliding groove (14); the arc length of the circular-arc-shaped sliding groove (14) is L1, the arc length of the outer edge of the circular-arc-shaped ear rim (21) is L2, and L2=0.7L1~0.8L1; A hinge lower hinge (22) is arranged at the top of the movable web (2); a hinge upper hinge (42) is arranged at the bottom of the support head (4); a bolt rod (3) is arranged in the hinge upper hinge (42) and the hinge lower hinge (22); a rotating groove (221) is arranged at the top end of the hinge lower hinge (22); The support head (4) is symmetrically provided with side protrusions (41) on the left and right sides; Circular-arc-shaped sliding grooves (14) are respectively provided with slot structures at both ends, the slot structures are provided with buckles (12) inside, and the both ends of the circular-arc-shaped ear rim (21) are arranged in the center holes on the buckles (12).

2. A wind resistant bearing according to claim 1, wherein: The bottom slide (1) is symmetrically provided with bolt holes (11).

3. A wind resistant bearing according to claim 2, wherein: Damping grease (13) is filled between the circular-arc-shaped ear rim (21) and the circular-arc-shaped sliding groove (14).

4. A wind resistant bearing according to claim 3, wherein: The buckle (12) is single-sided spot-welded with the boundary around the slot, the thickness of the buckle (12) is d1, the thickness of the closed end of the bottom slide (1) is d2, and d1>d2, d2=0.8~0.9mm.

5. A wind resistant bearing according to claim 4, wherein: A rubber damping sheet is arranged between the buckle (12) and the circular-arc-shaped ear rim (21).

6. A wind resistant bearing according to claim 5, wherein: The lock-seamed aluminum alloy plate above the support is tightly buckled with the side protrusions of the support head after being lock-seamed by a lock-seaming machine; The hinge blocking interval in the hinge lower hinge (22) is d3, the hinge upper hinge (42) blocking interval is d4, and d3>d4; the hole diameter of the hinge upper hinge (42) is a, the hole diameter of the hinge lower hinge (22) is b, the diameter of the bolt rod (3) is c, and a=b=c+2W, W is the thickness of the lock-seamed aluminum alloy plate (5); W=1.0mm, a=4.0~5.5mm, d4=19.0~21.5mm.

7. A two-way swivel wind resistance support according to claim 6, wherein: The rotating groove (221) is U-shaped, and the two sides are provided with blocking protrusions for limiting the rotating angle, the protrusion height is U, and U=0.2V, where V is the outer edge diameter of the hinge lower hinge (22), V=12.0mm.

8. A wind resistant bearing according to claim 7, wherein: The side protrusions (41) are composed of four inclined ribs at the middle position of the support head (4).

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