Dust-proof device for bridge support

Abstract

A dustproof device for a bridge support, comprising a transverse dustproof mechanism and a longitudinal dustproof mechanism arranged perpendicularly to each other; the transverse dustproof mechanism is composed of two transverse dustproof covers arranged oppositely in the transverse direction, and a transverse space for installing the bridge support is provided between the two transverse dustproof covers; the longitudinal dustproof mechanism is composed of two longitudinal dustproof covers arranged oppositely in the longitudinal direction, and a longitudinal space for installing the bridge support is provided between the two longitudinal dustproof covers; the transverse dustproof mechanism and the longitudinal dustproof mechanism cooperate to surround the bridge support, thereby realizing mobile dustproofing of the bridge support. The longitudinal dustproof mechanism and the transverse dustproof mechanism of the device are perpendicular to each other and are used at the periphery of the bridge support; the longitudinal dustproof mechanism can perform telescopic movement in the longitudinal direction of the bridge, and the transverse dustproof mechanism can perform transverse movement in the transverse direction of the bridge; through the coordination of their respective longitudinal and transverse movements, the support can be moved in any direction along the plane within the designed longitudinal and transverse position ranges, so that the support is always in a dustproof state, and has a good dustproof function.

Description

Technical Field

[0001] The invention belongs to the field of bridge supports, and in particular relates to a dustproof device for a bridge support. Background Art

[0002] The bridge bearing has the characteristics of high bearing capacity, simple structure, flexible rotation and excellent durability. There are multiple friction pairs in the bridge bearing to realize the bearing, displacement and rotation functions of the bearing. The plane friction pair and the spherical friction pair are composed of stainless steel slide plates and non-metallic slide plates. They are the core components of the spherical bearing and the key to the service life of the bearing. Therefore, its dustproof seal is very important. Once dust and impurities enter the friction surface, it will seriously affect the functionality and durability of the bearing.

[0003] At present, the external dustproof sealing device of bridge bearings in China mainly adopts a structure in which polyurethane panels and rubber panels surround the bearing seat plate and are fixed with pressure strips, or a structure in which steel structures are used as the framework and organic glass panels are installed around and on the upper surface to achieve dustproof effect. However, there are the following shortcomings in actual use: the polyurethane panels, rubber panels or organic glass panels used will be affected by environmental factors such as ozone and ultraviolet rays and age, and are prone to hydrolysis or performance degradation after absorbing water in a high humidity environment, resulting in damage and cracking, resulting in reduced sealing effect and affecting the protection life. Both structural dustproof devices are not suitable for strong wind environments, especially when used in coastal hurricane-prone areas and northwest windy sand areas. Polyurethane panels, rubber panels and organic glass panels are easily blown and torn due to insufficient fixing force and their own material characteristics, resulting in the bearing friction surface being exposed and unable to play a long-term protective role. The existing protective device needs to reserve displacement space. Under the condition of large displacement of the bearing, the dustproof sealing device structure is large and the bridge structure cannot meet the installation requirements. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a dustproof device for a bridge bearing. As the bridge bearing has greater strength and rigidity in harsh environments, it can prevent deformation or failure under strong winds, prevent damage and cracking, and has a good dustproof effect.

[0005] In order to achieve the above technical purpose, the adopted technical solution is: a dustproof device for a bridge support, comprising a transverse dustproof mechanism and a longitudinal dustproof mechanism arranged perpendicular to each other;

[0006] The transverse dustproof mechanism is composed of two transverse dustproof covers arranged opposite to each other in the transverse direction, and a transverse space for installing the bridge support is provided between the two transverse dustproof covers. When the bridge support moves to one side of the transverse bridge, the transverse dustproof cover on that side is compressed along with the bridge support, and the transverse dustproof cover on the other side is stretched along with the bridge support;

[0007] The longitudinal dustproof mechanism is composed of two longitudinal dustproof covers arranged opposite to each other in the longitudinal direction, and a longitudinal space between the two longitudinal dustproof covers is used to install the bridge support. When the bridge support moves to one side of the longitudinal bridge, the longitudinal dustproof cover on this side is compressed along with the bridge support, and the longitudinal dustproof cover on the other side is stretched along with the bridge support;

[0008] The transverse dust-proof mechanism and the longitudinal dust-proof mechanism cooperate with each other and surround the four sides of the bridge support to realize mobile dust-proofing of the bridge support.

[0009] A dust prevention device for a bridge bearing also includes a fixed connecting plate that does not affect the vertical rotation of the bridge bearing. The two fixed connecting plates are respectively installed on both longitudinal sides of the bridge bearing. The upper end of the fixed connecting plate is fixedly connected to the bridge bearing, and a rotation gap is provided between the lower end of the fixed connecting plate and the outer surface of the bridge bearing. One end of a longitudinal dust cover that is not fixedly connected to the bridge bearing is inserted into the rotation gap. When the bridge bearing moves, the fixed connecting plate pulls the longitudinal dust cover on the stretching side to stretch open.

[0010] The transverse dust cover includes a downwardly folded Z-shaped enclosure and a first dust-proof outer plate. The two sides of the Z-shaped enclosure are respectively connected to a first dust-proof outer plate, and the upper end of the Z-shaped enclosure is connected to the bridge support.

[0011] The width of the first dustproof outer plate is greater than the width of the Z-shaped enclosure plate in the lateral direction.

[0012] The longitudinal dust cover is composed of a multi-section dust cover and a second dust cover outer plate. The multi-section dust cover is sequentially mounted together from the head end to the tail end in order from large to small. The head end of the multi-section dust cover is arranged opposite to the bridge support. The upper edge of the first section dust cover at the head end is connected to the second dust cover outer plate. The second dust cover outer plate is inserted into the gap between the fixed connecting plate on the corresponding side and the bridge support.

[0013] A longitudinal cavity with an opening at the bottom is provided inside the longitudinal dust cover, and vertical support wheels for supporting movement are provided below at least one section of the dust cover in the longitudinal cavity, so that the dustproof bottom surface of the multi-section dust cover is flush with the dustproof bottom surface of the transverse dust cover.

[0014] A dustproof device for a bridge support also includes a mounting plate with a plane upper surface and extending longitudinally to achieve dustproof bottom surface sealing when the longitudinal dustproof mechanism is extended or retracted.

[0015] The lateral side walls of the dust cover extend downward but do not exceed the lower bottom surface of the lower seat plate of the bridge support.

[0016] Lateral supporting wheels are installed on the transverse side walls of the dust cover, and the wheel bodies of the lateral supporting wheels are pressed against the side surfaces of the lower seat plates of the bridge supports.

[0017] The top surface of the longitudinal dust cover is inclined downward from the center to the lateral sides.

[0018] The beneficial effects of the present invention are as follows: the longitudinal dustproof mechanism and the transverse dustproof mechanism of the device are perpendicular to each other and are used on the periphery of the bridge bearing. The longitudinal dustproof mechanism can perform telescopic movement in the longitudinal direction of the bridge, and the transverse dustproof mechanism can perform transverse movement in the transverse direction of the bridge. Through the coordination of their respective longitudinal movement and transverse movement, the bearing can be moved in any direction along the plane within the designed longitudinal and transverse position range, so that the bearing is always in a dustproof state and has a good dustproof function. It is especially suitable for parts to be dustproof that have a certain sliding function. The device has a good follow-up effect, can move independently in the longitudinal and transverse directions of the bridge, and is easy to install and disassemble.

[0019] When the support rotates in any direction in the vertical plane, the elevation changes and corresponding position changes will occur on both sides of the support relative to the rotation. This device can adapt to the position change after the support rotates through longitudinal and lateral movement, and can adapt to the elevation change after the support rotates through the movable connection between the longitudinal and lateral dust-proof mechanisms. The support has good coordination during rotation and excellent dust-proof effect. This solves the problem that the support rotates in all directions in the vertical plane. The movement of the dust-proof device is highly coordinated and can be better applied to the rotation function of the support. It also has good dust-proof function and avoids the squeezing and damaging effect of the support rotation on the dust-proof mechanism. This device has high strength and rigidity. In severe windy or sandy environments, the dust-proof device has a strong ability to resist large external forces, which solves the problem that conventional dust-proof devices are easily torn in windy conditions. It also solves the problem of aging and damage of traditional dust-proof devices after long-term use, and has a longer service life.

[0020] The longitudinal dust cover is arranged in a form in which the top surface is inclined downward from the center to the lateral sides, which can better achieve windward and wind diversion, reduce wind damage to the device, prevent dust accumulation and achieve dustproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 3 It is an enlarged structural schematic diagram of the second dustproof outer plate and the second connecting plate of the present invention;

[0024] Figure 4 It is a structural schematic diagram of embodiment 1 of the present invention;

[0025] In the figure: 1. transverse dustproof mechanism, 2. longitudinal dustproof mechanism, 10. transverse dust cover, 20. longitudinal dust cover, 30. mounting plate, 40. support, 50. mounting port, 10-1. Z-shaped enclosure, 10-2. first dustproof outer plate, 20-1. dust cover, 20-2. second dustproof outer plate, 20-3. vertical support plate, 20-4. lateral support wheel, 3. fixed connecting plate, 4. lower seat plate. DETAILED DESCRIPTION

[0026] The preferred embodiments of the invention are given below in conjunction with the accompanying drawings to explain the technical solution of the present invention in detail. Here, the corresponding drawings are given to explain the present invention in detail. It should be particularly noted that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not used to limit or restrict the present invention.

[0027] In the description of the present embodiment, the terms "inside", "outside", "front", "back", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish similar objects, and cannot be understood as a specific order or sequence, and it should be understood that such usage can be interchangeable under appropriate circumstances.

[0028] like Figure 1 , Figure 2 , Figure 3 As shown, a dustproof device for a bridge support includes a transverse dustproof mechanism 1 and a longitudinal dustproof mechanism 2 which are arranged perpendicular to each other. The transverse dustproof mechanism and the longitudinal dustproof mechanism 2 form a dustproof structure with a cavity on all sides.

[0029] The transverse dustproof mechanism 1 is composed of two transverse dustproof covers 10 arranged opposite to each other in the transverse direction, and a transverse space is provided between the two transverse dustproof covers 10. When the bridge support moves to one side of the transverse bridge, the transverse dustproof cover on that side is compressed along with the bridge support, and the transverse dustproof cover on the other side is stretched along with the bridge support. Each transverse dustproof cover 10 includes a downwardly folded Z-shaped enclosure 10-1 and a first dustproof outer plate 10-2. A first dustproof outer plate 10-2 is connected to each side of the Z-shaped enclosure 10-1. The lower end of the first dustproof outer plate 10-2 is higher than the upper surface of the support below or the upper surface of the mounting plate, such as Figure 2As shown, the first dustproof outer plate 10-2 can be the same plate as the first dustproof outer plate 10-2 on the other side of the cross bridge to seal the head end of the longitudinal dustproof mechanism. The Z-shaped enclosure 10-1 and the first dustproof outer plates 10-2 on both sides form a dustproof cavity, which can better withstand the horizontal and vertical winds compared to a single vertical plate. The upper end of the Z-shaped enclosure 10-1 is connected to the first connecting plate, and bolts can be used for connection, which is convenient for disassembly and can be installed on the bridge support using bolts. Two oppositely arranged transverse dust covers and two oppositely arranged fixed connecting plates 3 form an installation opening 50. The shape and size of the installation opening 50 are related to the shape and size of the bridge support. Different sizes of transverse dust covers and fixed connecting plates 3 can be selected according to the shape and size of the bridge support, for example: circular or square in shape, and connected as one through the connecting plates, which are connected as one with the bridge support to prevent the transverse dust covers from being blown up by excessive wind, and thus make installation more convenient. The lower parts of the two fixed connecting plates 3 are bent outward to this side.

[0030] The longitudinal dustproof mechanism 2 is composed of two longitudinal dustproof covers 20 arranged opposite to each other in the longitudinal direction, and a longitudinal space is provided between the two longitudinal dustproof covers 20. When the bridge bearing moves to one side of the longitudinal bridge, the longitudinal dustproof cover on that side is compressed along with the bridge bearing, and the longitudinal dustproof cover on the other side is stretched along with the bridge bearing. The combination of the longitudinal space and the transverse space is the space for installing the bridge bearing. The longitudinal dustproof cover 20 is composed of a multi-section dustproof cover 20-1 and a second dustproof outer plate 20-2. The multi-section dustproof cover 20-1 is sequentially sleeved together from the head end to the end in order from large to small. The end face of the last section of the dustproof cover 20-1 at the end is sealed, and the last section of the dustproof cover is fixed in its position. The longitudinal protective covers on both sides of the longitudinal direction are movably connected to adapt to the rotation of the bearing in the vertical plane and coordinate the movement in the longitudinal and transverse planes, and will not be damaged due to hard connection. Or movement disorder, the multi-section dust cover 20-1 adopts a telescopic structure with a small structural size, which meets the mobile space for bridge installation and solves the problem that the dustproof device cannot be installed on the large displacement support due to the limited installation space of the bridge. A vertical support wheel 20-3 is provided under at least one section of the dust cover 20-1 in the longitudinal cavity, so that the dustproof bottom surface of the multi-section dust cover 20-1 is flush with the dustproof bottom surface of the horizontal dust cover 10 to prevent dust from entering from the bottom. The upper edge of the first section of the dust cover 20-1 at the head end is connected to the second dustproof outer plate 20-2, and the second dustproof outer plate 20-2 is inserted into the gap between the fixed connecting plate 3 on the corresponding side and the first dustproof outer plate 10-2. This arrangement ensures the pulling and pushing of the longitudinal dust covers on both sides. At the same time, the horizontal dustproof mechanism also has moving space. No matter how it moves, the sealing of the entire dustproof device will not fail.

[0031] Both the transverse dustproof mechanism 2 and the longitudinal dustproof mechanism 2 are compensatory dustproof mechanisms. By utilizing their own structural characteristics, the dust cover can be contracted and stretched in the longitudinal direction in a windy environment, and the compensation seal can be moved slightly in the transverse direction, so that they can be better used in harsh environments.

[0032] A dust prevention device for a bridge bearing also includes a fixed connecting plate 3 that does not affect the vertical rotation of the bridge bearing. Two fixed connecting plates 3 are respectively installed on both longitudinal sides of the bridge bearing. The upper end of the fixed connecting plate 3 is fixedly connected to the bridge bearing, and a rotation gap is provided between the lower end thereof and the outer surface of the bridge bearing. One end of a longitudinal dust cover that is not fixedly connected to the bridge bearing is inserted into the rotation gap. The rotation gap includes a horizontal gap between the longitudinal dust cover and the bridge bearing, and a longitudinal gap between the longitudinal dust cover and the fixed connecting plate. When the bridge bearing moves, the fixed connecting plate 3 pulls the longitudinal dust cover on the stretching side to stretch, and the bridge bearing pushes the longitudinal dust cover to compress.

[0033] A dustproof device for a bridge support also includes a mounting plate 30 with a flat upper surface and extending longitudinally. The mounting plate 30 is fixed to the last dust cover at the end and is located on the upper surface of the lower seat plate. It does not affect the extension and retraction of the longitudinal dustproof mechanism. The mounting plate 30 is used to seal the bottom of the uneven surface and the longitudinal space that is longer than the length of the lower seat plate of the support. The mounting plate can be thinner than the lower seat plate, and the longitudinal and transverse dustproof mechanisms are higher than the lower bottom surface of the lower seat plate. The vertical support wheels of the longitudinal dustproof mechanism can move on the mounting plate 30 and support the weight of the longitudinal dustproof mechanism and the external force acting on the dustproof device. The lateral side walls of the dust cover 20-1 extend downward and do not exceed the lower bottom surface of the lower seat plate of the bridge support, further improving the sealing and dustproofing effect.

[0034] Lateral support wheels 20-4 are installed on the lateral side walls of the dust cover 20-1, and the wheel body of the lateral support wheel 20-4 is pressed against the side of the lower seat plate of the bridge support. This design facilitates the sliding of the dust cover 20-1 and can also bear the lateral wind load on the longitudinal dust protection mechanism.

[0035] The top surface of the longitudinal dust cover 20 is inclined downward from the center to the lateral sides. This structure can better guide the wind, prevent excessive wind force, and prevent dust accumulation.

[0036] The plate and bolts of the dustproof device are made of stainless steel, and grades such as 0Cr18Ni9, 1Cr18Ni9Ti, and 316L can be selected. Stainless steel plates have excellent corrosion resistance and aging resistance, which prevents polyurethane panels or rubber panels from being directly exposed to the sun, reduces material aging and failure caused by ultraviolet rays, ozone, etc., and has better durability. The device has high rigidity, can resist the force of typhoons, and has good windproof ability.

[0037] The dust-proof device can be used to prevent dust and sand on the periphery of equipment in areas with severe wind and sand. After the equipment is installed at the installation port, other equipment to be connected can be connected above to shield the upper port, or a cover can be added to seal the port. It can also be used to protect bearings on bridges.

[0038] Example 1

[0039] A dust prevention device for a bridge support, used for a bridge support, such as Figure 4 As shown, the bridge bearing is installed in the installation port, the first connecting plate and the fixed connecting plate 3 are connected to the upper seat plate of the bearing 40, the lower seat plate of the bearing can be set on the installation plate or in the longitudinal cavity or used as a mounting plate, the lower seat plate of the bearing is fixed on the top of the bridge pier, the difference between the maximum extension length and the minimum compression length of the longitudinal telescopic mechanism is greater than the bidirectional displacement of the bearing in the longitudinal bridge direction, when the bearing slides laterally, it can drive the transverse dustproof mechanism to move laterally, when the bearing slides longitudinally, the longitudinal dustproof mechanism is compressed and stretched with the internal bearing, and when the bearing rotates, a rotation gap is provided between the lower part of the fixed connecting plate 3 and the first dustproof outer plate 10-2 on the corresponding side, and the distance is designed according to the specification to meet the needs of the lateral sliding and the change of the bearing height after the spherical surface rotates during the normal operation of the bearing. Therefore, the device has no interference effect on the longitudinal and transverse sliding and vertical rotation of the bridge bearing under normal use conditions.

[0040] The plates and bolts of the wind-resistant dustproof device for bridge bearings are made of stainless steel. Stainless steel plates have excellent corrosion resistance and aging resistance, which prevents polyurethane panels or rubber panels from being directly exposed to the sun, reduces material aging and failure caused by ultraviolet rays, ozone, etc., and has better durability. In addition, the device composed of steel plates has high rigidity, can withstand strong winds, and has good windproof capabilities. Side baffles are provided on both sides of the lateral protective plate of the device, and there are no gaps, which improves the overall rigidity and dustproof sealing performance of the device. Improves the overall rigidity and dustproof sealing performance of the device. This device has the advantages of simple structure, convenient installation, excellent corrosion resistance, good sealing, high rigidity, excellent windproof performance, and long service life.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit or restrict the present invention. For researchers or technicians in this field, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection declared by the present invention.

Claims

1. A dust prevention device for a bridge support, characterized in that: It comprises a transverse dust prevention mechanism (1), a longitudinal dust prevention mechanism (2) and a fixed connection plate (3) which are arranged perpendicular to each other and do not affect the vertical rotation of the bridge support; The transverse dustproof mechanism (1) is composed of two transverse dustproof covers (10) arranged opposite to each other in the transverse direction, and a transverse space for installing a bridge support is provided between the two transverse dustproof covers (10); The longitudinal dustproof mechanism (2) is composed of two longitudinal dustproof covers (20) arranged opposite to each other in the longitudinal direction, and a longitudinal space between the two longitudinal dustproof covers (20) is used to install the bridge support. When the bridge support moves to one side of the longitudinal bridge, the longitudinal dustproof cover on that side is compressed along with the bridge support, and the longitudinal dustproof cover on the other side is stretched along with the bridge support. The transverse dust prevention mechanism (1) and the longitudinal dust prevention mechanism (2) cooperate to surround the bridge support and realize mobile dust prevention of the bridge support; Two fixed connection plates (3) are respectively mounted on both sides of the longitudinal direction of the bridge support. The upper end of the fixed connection plate (3) is fixedly connected to the bridge support, and a rotation gap is provided between the lower end and the outer surface of the bridge support. One end of the longitudinal dust cover that is not fixedly connected to the bridge support is inserted into the rotation gap. When the bridge support moves, the fixed connection plate (3) pulls the longitudinal dust cover on the stretching side to stretch.

2. A dust prevention device for a bridge support as claimed in claim 1, characterized in that: The transverse dust cover (10) comprises a downwardly folded Z-shaped enclosure (10-1) and a first dustproof outer plate (10-2), the two sides of the Z-shaped enclosure (10-1) are respectively connected to a first dustproof outer plate (10-2), and the upper end of the Z-shaped enclosure (10-1) is connected to a bridge support.

3. A dust prevention device for a bridge support as claimed in claim 2, characterized in that: The width of the first dustproof outer plate (10-2) is greater than the width of the Z-shaped enclosure plate (10-1) in the lateral direction.

4. A dust prevention device for a bridge support as claimed in claim 1, characterized in that: The longitudinal dust cover (20) is composed of a plurality of dust covers (20-1) and a second dust cover outer plate (20-2). The plurality of dust covers (20-1) are sequentially mounted together from the head end to the tail end in a descending order. The head end of the plurality of dust covers (20-1) is arranged opposite to the bridge support. The second dust cover outer plate (20-2) is connected to the upper edge of the first dust cover (20-1) at the head end. The second dust cover outer plate (20-2) is inserted into the gap between the fixed connection plate (3) on the corresponding side and the bridge support.

5. A dust prevention device for a bridge support as claimed in claim 4, characterized in that: A longitudinal cavity with an opening at the bottom is provided inside the longitudinal dust cover (20), and a vertical support wheel (20-3) for supporting movement is provided below at least one section of the dust cover (20-1) in the longitudinal cavity, so that the dustproof bottom surface of the multi-section dust cover (20-1) is flush with the dustproof bottom surface of the transverse dust cover (10).

6. A dust prevention device for a bridge support as claimed in claim 1, characterized in that: It also includes a mounting plate (30) whose upper surface is a plane and extends in the longitudinal direction, so as to achieve dustproof bottom surface sealing when the longitudinal dustproof mechanism is extended or retracted.

7. A dust prevention device for a bridge support as claimed in claim 4, characterized in that: The side walls on both sides of the dust cover (20-1) extend downward and do not exceed the lower bottom surface of the lower seat plate of the bridge support.

8. A dust prevention device for a bridge support as claimed in claim 6, characterized in that: Lateral support wheels (20-4) are installed on the transverse side walls of the dust cover (20-1), and the wheel bodies of the lateral support wheels (20-4) are pressed against the side surfaces of the lower base plate of the bridge support.

9. A dust prevention device for a bridge support as claimed in claim 1, characterized in that: The top surface of the longitudinal dust cover (20) is inclined downward from the center to the lateral sides.

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