Bridge bearing with adjustable expansion joint

Abstract

The utility model is applicable to the technical field of bridge bearings, and provides a bridge bearing with adjustable expansion joints, including a support assembly, a pressure-bearing assembly is arranged at the bottom of the support assembly, a group of adjustment assemblies are symmetrically arranged at both sides of the pressure-bearing assembly, and a fixing assembly is arranged at one end of the pressure-bearing assembly away from the support assembly. The device solves the problem of inconvenient replacement of rubber strips of bridge expansion joints, and achieves the purpose of adjusting the bridge expansion joints through the adjustment assembly, so that the bridge expansion joints are slightly deformed, thereby making it more convenient for operators to replace the sealing rubber strips of the bridge expansion joints, and the adjustment assembly can also adjust the angle of the support top plate so that the device can be installed on an uneven bridge bottom, so that the device and the bridge bottom are more closely fitted and the force is more evenly applied, thereby improving the scope of application and service life of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge supports, and more specifically, to a bridge support with adjustable expansion joints. Background Art

[0002] Bridge bearings are important structural components that connect the superstructure and substructure of a bridge. They are located between the bridge and the pad stone. They can reliably transfer the load and deformation borne by the superstructure of the bridge to the substructure of the bridge, and are important force transmission devices of the bridge. Bridge expansion joints refer to expansion joints that are usually set between the two beam ends, between the beam end and the abutment, or at the hinged position of the bridge to meet the requirements of bridge deck deformation.

[0003] At present, bridge bearings on the market are usually made of stainless steel and rubber. The combination of stainless steel and rubber can provide good support for bridges. Bridge expansion joints on the market usually use bridge expansion joint rubber strips to provide isolation for their lower structures to prevent rainwater and mud brought by cars from seeping into the expansion joints. Both structures are indispensable for bridge construction.

[0004] However, since the rubber strips installed in the bridge expansion joints are firmly attached and the rubber material is easily aged in the wind, water and sun, the rubber strips of the bridge expansion joints must be replaced on time. However, the rubber strips of the bridge expansion joints on the market are inconvenient to replace, and there are no bridge bearings that are convenient for replacing the rubber strips of the bridge expansion joints. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a bridge bearing which can adjust the inclination of a supporting top plate through an adjusting component, thereby adjusting the expansion joint of the bridge and making it convenient to replace the rubber strip of the expansion joint of the bridge.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bridge bearing with an adjustable expansion joint comprises a support assembly, a pressure-bearing assembly is arranged at the bottom of the support assembly, a group of adjustment assemblies are symmetrically arranged on both sides of the pressure-bearing assembly, and a fixed assembly is arranged at one end of the pressure-bearing assembly away from the support assembly; the adjustment assembly comprises a connecting rod, a group of cylinders are connected to each of the two ends of the connecting rod, the cylinders comprise a pressure rod, the connecting rod passes through the pressure rod to connect the two groups of cylinders, and the two groups of cylinders are symmetrical about the midpoint of the connecting rod; the pressure-bearing assembly comprises a mounting ring connected to the top of the fixed assembly.

[0008] The utility model is further configured as follows: the cylinder includes a cylinder barrel, a piston rod is provided on the inner wall of the cylinder barrel, and the piston rod is slidably connected to the cylinder barrel, a pressure rod is provided on the side of the cylinder barrel away from the pressure-bearing component, the top of the pressure rod is an annular structure, a connecting plate is provided on the end of the pressure rod away from the piston rod, and the bottom of the connecting plate is connected to a fixing component.

[0009] By adopting the above technical solution, the two sets of adjustment components of the device are driven by cylinders and connecting rods. When the bridge joint rubber strip needs to be replaced, the staff can lift one end of the support top plate and tilt the bridge joint, making the removal and installation of the bridge joint rubber strip more convenient and quick. At the same time, the device can slightly tilt the angle of the support top plate through the adjustment component to adapt to the installation between the bridge plate and the bridge column at different angles, thereby improving the flexibility of the device.

[0010] The utility model is further configured as follows: the pressure-bearing component comprises a stainless steel plate, the stainless steel plate is arranged at a recessed position at the bottom of the supporting top plate, and a polytetrafluoroethylene plate is arranged at one end of the stainless steel plate away from the supporting top plate.

[0011] The utility model is further configured as follows: a composite plate is installed at the bottom of the polytetrafluoroethylene plate, the composite plate is adapted to the shape of the mounting ring, and a mounting ring is sleeved on the outer side of the composite plate.

[0012] By adopting the above technical solution, the composite plate is composed of a stack of rubber plates and steel plates. The rubber plates have the properties of a fluid under three stress states and are used to realize the rotation of the upper structure. The steel plates provide support for the device. At the same time, the low friction coefficient between the polytetrafluoroethylene plate and the stainless steel plate is used to realize the horizontal displacement of the upper structure. The overall structure of the pressure-bearing component improves the bearing capacity of the device.

[0013] The utility model is further configured as follows: a square groove is opened at the bottom of the support top plate, the shape of the groove is adapted to the stainless steel plate, a group of support bolt rods are respectively arranged at the four corners of the top of the support top plate, and a group of washers are respectively arranged at the bottom of each group of support bolt rods.

[0014] The utility model is further configured as follows: the fixing plate comprises a fixing plate, and a group of anchor rods are respectively arranged at four corners of the bottom of the fixing plate.

[0015] By adopting the above technical solution, the device is firmly fixed to the top of the bridge column through the fixing assembly, and is connected to the bottom of the bridge deck where the bridge expansion joint is set through the supporting assembly, so that the device is stably connected.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The device can replace the bridge expansion joint rubber strip by adjusting the bridge expansion joint. During the replacement of the bridge expansion joint rubber strip, the operator can first use the support assembly to slightly deform the bridge expansion joint (without affecting its expansion performance). The deformed bridge expansion joint rubber strip is easier to disassemble and also easier to replace with a new bridge expansion joint rubber strip.

[0018] 2. The support assembly of the device can tilt the angle of the support upper plate of the device so that the device can be installed on the bottom of an uneven bridge deck. The operator can adjust the support upper plate of the bridge bearing according to the angle of the bridge deck, so that the bridge bearing and the bottom of the bridge deck are more closely fitted, thereby improving the supporting force of the device. At the same time, due to the fit of the angle, the bridge bearing is evenly stressed, which extends the service life of the bridge and improves its scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of the structure of a bridge support with adjustable expansion joints.

[0020] Figure 2 for Figure 1 Exploded diagram.

[0021] Figure 3 for Figure 1 Right view of .

[0022] Figure 4 It is a structural schematic diagram of the adjustment component in the utility model.

[0023] Description of reference numerals: 1, support assembly; 11, support top plate; 12, support bolt rod; 13, washer;

[0024] 2. Pressure-bearing component; 21. Stainless steel plate; 22. Polytetrafluoroethylene plate; 23. Composite plate; 24. Mounting ring;

[0025] 3. Adjustment assembly; 31. Cylinder; 311. Piston rod; 312. Cylinder barrel; 313. Pressing rod; 314. Connecting plate; 32. Connecting rod;

[0026] 4. Fixing assembly; 41. Fixing plate; 42. Anchor rod. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] For example, see Figure 1-4 , the utility model provides the following technical solutions:

[0030] Specifically refers to a bridge bearing with adjustable expansion joints, see Figure 1 , including a support assembly 1, a pressure-bearing assembly 2 is arranged at the bottom of the support assembly 1, and the pressure-bearing assembly 2 is arranged in the horizontal direction. A set of adjustment assemblies 3 are symmetrically arranged at both sides of the pressure-bearing assembly 2, and a fixing assembly 4 is arranged at one end of the pressure-bearing assembly 2 away from the support assembly 1. The adjustment assembly 3 includes a connecting rod 32, and a set of cylinders 31 are connected to each end of the connecting rod 32. The connecting rod 32 is arranged in the horizontal direction, and the cylinder 312 is arranged in the vertical direction. The two sets of cylinders 31 are symmetrical about the midpoint of the connecting rod 32.

[0031] See also Figure 4 The cylinder 31 includes a piston rod 311, which is arranged on the inner wall of the cylinder barrel 312 and is slidably connected to the cylinder barrel 312. The piston rod 311 can slide inside the cylinder barrel 312 through compressed air. A pressing rod 313 is arranged on the side of the cylinder barrel 312 away from the pressure-bearing component 2, and the pressing rod 313 is arranged in the vertical direction. The top of the pressing rod 313 is an annular structure, and the pressing rod 313 is adapted to the shape of the connecting rod 32. A connecting plate 314 is arranged on the end of the pressing rod 313 away from the piston rod 311. The connecting plate 314 is square and has rounded corners. The connecting plate 314 connects the cylinder 31 to the fixed plate 41. The connecting rod 32 passes through the pressing rod 313 to connect the two groups of cylinders 31. When the connecting rod 32 is pressed, the connecting rod 32 drives the pressing rod 313 to be pressed downward, and the pressing rod 313 presses the air into the cylinder 312, so that the piston rod 311 pushes up one end of the support top plate 11. When the pressing rod 313 is pressed in the opposite direction, the gas in the cylinder 312 can be discharged from the bottom, and the piston rod 311 retracts, thereby supporting one end of the top plate 11 to return to a horizontal state.

[0032] See also Figure 2 The pressure-bearing component 2 includes a stainless steel plate 21 and a mounting ring 24. The stainless steel plate 21 is arranged in the depression at the bottom of the supporting top plate 11. The stainless steel plate 21 is square. A polytetrafluoroethylene plate 22 is arranged at one end of the stainless steel plate 21 away from the supporting top plate 11. The size of the polytetrafluoroethylene plate 22 is smaller than that of the stainless steel plate 21. The low friction coefficient between the polytetrafluoroethylene plate 22 and the stainless steel plate 21 can be used to achieve horizontal displacement of the upper structure. A composite plate 23 is installed at the bottom of the polytetrafluoroethylene plate 22. The composite plate 23 is cylindrical and matches the shape of the mounting ring 24. The composite plate 23 is composed of stacked rubber plates and steel plates. The rubber plate has fluid properties in three stress states and is used to realize the rotation of its upper structure. The steel plate provides support for the device.

[0033] See also Figure 3A groove is provided at the bottom of the support top plate 11, and the size of the support top plate 11 is consistent with that of the fixing plate 41. A stainless steel plate 21 is installed in the groove at the bottom of the support top plate 11, and a group of support bolt rods 12 are respectively provided at the four corners of the top of the support top plate 11. Four groups of support bolt rods 12 fix the device to the bottom of the bridge where the bridge joint is installed. The support bolt rods 12 are arranged in the vertical direction, and a group of washers 13 are respectively provided at the bottom of each group of support bolt rods 12. The washers 13 are in a circular ring structure, and the washers 13 provide a certain buffering effect for the support components of the device.

[0034] See also Figure 3 The fixing assembly 4 includes a fixing plate 41. A group of anchor rods 42 are respectively arranged at the four corners of the bottom of the fixing plate 41. The four groups of anchor rods 42 are arranged in the vertical direction. The four groups of anchor rods firmly fix the device to the top of the bridge column corresponding to the bottom of the bridge expansion joint. A group of connecting plates 314 are respectively arranged at the four corners of the top of the fixing plate 41. The connecting plates 314 connect the cylinder 31 and the fixing plate 41 to prevent the cylinder 31 from being displaced during operation. A mounting ring 24 is provided at one end of the fixing plate 41 close to the support assembly 1. The fixing plate 41 provides an installation environment for the mounting ring 24. The inner wall of the mounting ring 24 is connected to the composite plate 23. The mounting ring 24 is adapted in shape to the composite plate 23. The mounting ring 24 provides an installation environment for the composite plate 23.

[0035] The working principle of the bridge support with adjustable expansion joint provided by the utility model is as follows:

[0036] The device connects the entire device to the bottom of the bridge where the bridge expansion joint is installed through the support component 1. At the same time, the device provides the device with bearing capacity and rotational force through the pressure-bearing component 2. When the bridge expansion joint rubber strip needs to be replaced, the device can be operated by the cylinder 31 of the adjustment component 3 to drive the support top plate 11 to tilt. The tilt of the support top plate 11 causes the bridge expansion joint to deform, making it easier for operators to replace the bridge expansion joint rubber strip. After the replacement is completed, the gas is released through the cylinder 31 to return the support top plate 11 to balance, completing the entire replacement process. At the same time, since the support top plate 11 of the device can have a tilt angle, the device can also be applied to uneven bridge bottoms, so that the support fits the uneven bridge bottom, making the pressure on the support more balanced, and improving the life and application range of the support.

[0037] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A bridge bearing with adjustable expansion joint, characterized in that: The support assembly (1) comprises a support top plate (11), a pressure-bearing assembly (2) is arranged at the bottom of the support top plate (11), a group of adjustment assemblies (3) are symmetrically arranged at two sides of the pressure-bearing assembly (2), and a fixing assembly (4) is arranged at one end of the pressure-bearing assembly (2) away from the support assembly (1); The adjustment assembly (3) comprises a connecting rod (32), each end of the connecting rod (32) being connected to a group of cylinders (31), the cylinders (31) comprising a pressing rod (313), the connecting rod (32) passing through the pressing rod (313) to connect the two groups of cylinders (31), and the two groups of cylinders (31) are symmetrical about the midpoint of the connecting rod (32); The pressure-bearing component (2) comprises a mounting ring (24) connected to the top of the fixing component (4).

2. The bridge support with adjustable expansion joint according to claim 1, characterized in that: The cylinder (31) comprises a cylinder barrel (312), the inner wall of which is provided with a piston rod (311), and the piston rod (311) is slidably connected to the cylinder barrel (312), a pressing rod (313) is provided on the side of the cylinder barrel (312) away from the pressure-bearing component (2), the top end of the pressing rod (313) is in an annular structure, a connecting plate (314) is provided on the end of the pressing rod (313) away from the piston rod (311), and the bottom of the connecting plate (314) is connected to the fixing component (4).

3. The bridge support with adjustable expansion joint according to claim 1, characterized in that: The pressure-bearing component (2) comprises a stainless steel plate (21), the stainless steel plate (21) being arranged in a recessed position at the bottom of the supporting top plate (11), and a polytetrafluoroethylene plate (22) being arranged at one end of the stainless steel plate (21) away from the supporting top plate (11).

4. The bridge support with adjustable expansion joint according to claim 3, characterized in that: A composite plate (23) is installed at the bottom of the polytetrafluoroethylene plate (22); the composite plate (23) is adapted in shape to the mounting ring (24); and the mounting ring (24) is sleeved on the outer side of the composite plate (23).

5. The bridge support with adjustable expansion joint according to claim 1, characterized in that: The bottom of the support top plate (11) is provided with a square groove, the shape of the groove being adapted to the stainless steel plate (21), a group of support bolt rods (12) are respectively provided at the four corners of the top of the support top plate (11), and a group of washers (13) are respectively provided at the bottom of each group of support bolt rods (12).

6. The bridge support with adjustable expansion joint according to claim 2, characterized in that: The fixing assembly (4) comprises a fixing plate (41), and a group of anchor rods (42) are respectively arranged at four corners of the bottom of the fixing plate (41).

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