CN111305056A - A maintenance-free or less maintenance bridge bearing - Google Patents

Abstract

A maintenance-free or less maintenance bridge bearing, comprising an upper seat plate, a middle seat plate and a lower seat plate, an anchor bolt assembly for connecting with a bridge is arranged on the upper seat plate and the lower seat plate: the lower surface of the upper seat plate is a plane, The lower surface of the upper seat plate is provided with dust-proof baffles on two or four sides correspondingly, and the dust-proof baffles are arranged perpendicular to the lower surface of the upper seat plate; The dust baffle I is arranged perpendicular to the dust baffle; the head of the anchor bolt assembly is provided with a sealing assembly for sealing the bolt head. The bearing has excellent dust-proof and corrosion-resistant effects, which can effectively protect the friction pair of the bridge bearing, avoid the corrosion of the anchor bolts and the main material, thereby reducing the maintenance times of the bearing, achieving the purpose of less maintenance or maintenance-free, and greatly reducing the cost of maintenance. Reduce the life cycle cost of the bearing.

Description

A maintenance-free or less maintenance bridge bearing

technical field

The invention relates to the technical field of bridge bearings, in particular to a maintenance-free or less maintenance bridge bearing.

Background technique

The bridge is designed to have a long service life, and regular maintenance of its auxiliary components is a necessary measure to ensure a long service life. During the use of the bridge support, it is generally required to carry out regular inspection and maintenance once a year. The maintenance items mainly include: (1) Check whether the anchor bolts are sheared, check whether the anchor bolts are rusted, and loosen the anchor bolts once to avoid threading. (2) Check whether the dustproof sealing skirt of the bearing is damaged; (3) Check whether the guide limit plate is sheared; (4) Check whether the relative displacement of the bearing is uniform, and record the displacement of the bearing one by one (5) Remove the sundries near the support and wipe the dust on the stainless steel surface; (6) Check and check the height change of the support at a fixed point, so as to check the wear of the PTFE in the support; (7) Regularly paint and rust-proof the steel parts of the bearing (except for the stainless steel sliding surface). From the above maintenance items, anchor bolt maintenance, dustproof device maintenance and surface paint maintenance are the most important in bearing maintenance, and maintenance work is also the most difficult and labor-intensive, especially under complex geological and environmental conditions. The line maintenance work will face multiple severe environmental problems, and the maintenance work will be extremely difficult. At present, conventional supports do not have special design and protection for the above-mentioned structures, resulting in increased support maintenance times, difficulty in support maintenance, and high support maintenance costs. Maintenance-free or low-maintenance support design is urgently needed.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a maintenance-free or less maintenance bridge support, which can completely solve the above-mentioned deficiencies of the prior art through the design of the dust-proof structure and the design of the bolt protection structure.

In order to achieve the above technical purpose, the adopted technical scheme is: a maintenance-free or less maintenance bridge bearing, including an upper seat plate, a middle seat plate and a lower seat plate, and the upper seat plate and the lower seat plate are provided with a bridge for connecting with the bridge. The Anchor Bolt Assembly:

The lower surface of the upper seat plate is flat, and the lower surface of the upper seat plate is provided with dust-proof partitions on corresponding two sides or four sides, and the dust-proof partitions are arranged perpendicular to the lower surface of the upper seat plate;

A dust-proof baffle I is fixed above the dust-proof baffle, and the dust-proof baffle I is arranged perpendicular to the dust-proof baffle;

The head of the anchor bolt assembly is provided with a closure assembly for sealing the bolt head.

The lower part of the dust-proof baffle I is provided with a dust-proof baffle II fixed on the lower seat plate, and the dust-proof baffle II and the dust-proof baffle I form a staggered structure.

The dust-proof partition is an arc-shaped plate.

The upper cylindrical surface of the lower seat plate and the upper surface of the bottom plate of the lower seat plate have a smooth transition, and the upper surface of the bottom plate of the lower seat plate has a slope inclined to the outer side and downward. The closure assembly includes an anti-corrosion washer and a bolt cap, the bolt cap is sleeved on the outside of the bolt head of the anchor bolt assembly, the inner wall of the bolt cap is provided with an internal thread, the anti-corrosion washer is sleeved under the bolt head of the anchor bolt assembly, and the anti-corrosion washer is provided. The outer wall is provided with an external thread matched with the internal thread.

The upper column of the lower seat pan faces in at the waist.

The closure assembly includes an anti-corrosion washer and a bolt cap, the bolt cap is sleeved on the outside of the bolt head of the anchor bolt assembly, the inner wall of the bolt cap is provided with an internal thread, the anti-corrosion washer is sleeved under the bolt head of the anchor bolt assembly, and the anti-corrosion washer is provided. The outer wall is provided with an external thread matched with the internal thread.

The anti-corrosion washer and the lower part of the bolt cap are pressed with a sealing washer under the bolt head sleeved with the anchor bolt assembly.

Gaskets are non-metallic gaskets.

The upper seat plate and the dust-proof partition are integrally cast and formed or connected in a split type. When the split type is connected, bolt connection or welding is used.

The dust-proof baffle I is fixed on the dust-proof baffle by one of welding, bolt connection or plug-in connection.

The beneficial effects of the invention are: the bearing has excellent dust-proof and corrosion-resistant effects, which can effectively protect the friction pair of the bridge bearing, avoid the corrosion of the anchor bolts and the main material, thereby reduce the maintenance times of the bearing, and achieve less maintenance or maintenance. The purpose of maintenance-free, greatly reducing the whole life cycle cost of the bearing.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural combination diagram of the dust-proof partition plate of the present invention and the upper seat plate;

Fig. 3 is the structural front view of the dust-proof partition of the present invention;

Fig. 4 is the structure top view of the dust-proof partition of the present invention;

Fig. 5 is the structural schematic diagram of the closing assembly of the present invention;

In the picture: 1. Upper seat plate; 2. Middle seat plate; 3. Lower seat plate; 4. Anchor bolt assembly; 11. Guide plate; 12. Dust-proof partition; 13. Dust-proof baffle I; Plate II; 41, closure assembly; 411, bolt cap; 412, anti-corrosion gasket; 413, sealing gasket.

Detailed ways

The present invention will be described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the embodiments.

A maintenance-free or low-maintenance bridge bearing, which can be maintenance-free in a basic environment and less maintenance in a harsh environment, such as a sandstorm environment, the bridge bearing comprises an upper seat plate 1, a middle seat plate 2, and a lower seat plate 3, The upper seat plate 1, the middle seat plate 2, and the lower seat plate 3 are arranged in order from top to bottom, for example, one-way bridge bearings, multi-directional bridge bearings, hyperboloid bearings, spherical bearings, etc. The lower seat plate 3 is provided with an anchor bolt assembly 4 for connecting with the bridge, and the anchor bolt assembly 4 passes through the installation holes reserved on the upper seat plate 1 or the lower seat plate 3 through the anchor bolts to realize the connection with the beam body or the top of the pier. connect.

As shown in FIG. 1 , the lower surface of the upper seat plate 1 is flat, and dust-proof partitions 12 are provided on corresponding two or four sides on the lower surface of the upper seat plate 1 , and the dust-proof partitions 12 are perpendicular to the lower surface of the upper seat plate 1 . Surface setting; when the lower surface of the upper seat plate 1 is provided with a guide plate 11 for guiding the lower seat plate, two dust-proof partitions 12 are correspondingly arranged on the lower surface of the upper seat plate 1 perpendicular to the two guide plates 11. A dust-proof partition 2 and two guide plates 11 enclose a dust-proof space, as shown in Figure 2, Figure 3, and Figure 4, if the installation position of the dust-proof partition 2 does not affect the horizontal displacement of the support, the inner The shape and structure are optimally matched with the outer surface of the lower seat plate of the support, and the upper part of the lower seat plate is a cylinder, that is, the dust-proof partition 2 is an arc-shaped plate, and the best is a circular arc-shaped plate.

The upper seat plate 1 and the dust-proof partition 12 are integrally formed by casting or are connected in a split type, and bolt connection or welding is used when the split type is connected.

A dust-proof baffle I13 is fixed above the dust-proof baffle plate 12, the dust-proof baffle plate I13 is arranged perpendicular to the dust-proof baffle plate 12, the dust-proof baffle plate I13 is arranged towards the lower seat plate, and is between the outer surface of the lower seat plate There is a certain distance, which should meet the horizontal displacement of the support. The inner shape of the dust baffle I13 is optimally matched with the outer surface of the lower seat plate of the support. The upper part of the lower seat plate is a cylinder, that is, the inner side of the dust baffle I13. The shape is circular. The dust-proof structure composed of the dust-proof partition plate 12 and the dust-proof baffle plate I13 can prevent dust and other impurities from entering the friction pair between the seat plates.

The dust-proof baffle plate I13 is fixed on the dust-proof partition plate 12 by one of welding, bolt connection or plug-in connection.

The head of the anchor bolt assembly 4 is provided with a closing assembly 41 for sealing the bolt head, and the closing assembly 41 prevents the anchor bolt from rusting.

The bottom of the dust-proof baffle I13 is provided with a dust-proof baffle II14 fixed on the lower seat plate 3. The dust-proof baffle II14 and the dust-proof baffle I13 form a staggered structure, so that the dust-proof baffle II14 and the dust-proof baffle II14 It is lost with the dust baffle I13 to further prevent dust.

The upper cylindrical surface of the lower seat plate 3 and the upper surface of the bottom plate of the lower seat plate 3 have a smooth transition. The edge has a height difference, and the design prevents the accumulation of water on the surface of the bearing.

The upper column of the lower seat plate 3 faces inward and is waisted, which not only saves costs, but also prevents the accumulation of water and dew.

As shown in FIG. 5 , the closure assembly 41 includes an anti-corrosion washer 412 and a bolt cap 411 . The bolt cap 411 is sleeved on the outside of the bolt head of the anchor bolt assembly 4 , the inner wall of the bolt cap 411 is provided with internal threads, and the anti-corrosion washers 412 are sleeved. Below the bolt head where the anchor bolt assembly 4 is provided, the outer wall of the anti-corrosion washer 412 is provided with an outer thread matched with the inner thread. The sealing structure can be quickly disassembled without affecting the disassembly and installation of the anchor bolt assembly 4 .

The anti-corrosion washer 412 and the underside of the bolt cap 411 are pressed with a sealing washer 413 under the bolt head sleeved with the anchor bolt assembly 4 .

The sealing gasket 413 is a non-metallic gasket.

Example 1

A maintenance-free or less maintenance bridge bearing is mainly composed of an upper seat plate 1, a middle seat plate 2, a lower seat plate 3 and an anchor bolt assembly 4 and other components. The lower surface of the upper seat plate 1 is bolted with a dust-proof partition 12 in a "racetrack-type" structure. A stainless steel dust-proof baffle 13 is installed below the dust-proof baffle 12, the stainless-steel dust-proof baffle I13 is perpendicular to the dust-proof baffle 12, and the dust-proof baffle I13 and the dust-proof baffle form a dust-proof structure. The anchoring assembly 4 is composed of an anchor bolt, a sleeve, a screw rod and a closed structure, and the closed structure is composed of a bolt cap 41, a steel washer and a non-metallic washer. The bolt cap 41 is provided with an internal thread, the steel washer is provided with an external thread, the bolt cap 41 is threaded with the steel washer, and the non-metallic washer is pressed to seal the anchor bolt in a closed space, so as to realize the connection between the anchor bolt and the external water vapor. Isolation to prevent anchor bolts from rusting.

Example 2

The main structure of this embodiment is the same as that of Embodiment 1. The difference from Embodiment 1 is that a stainless steel dust-proof baffle II14 is arranged below the stainless steel dust-proof baffle I13, and the two stainless steel dust-proof baffles form a staggered layer structure. The stainless steel dust baffle II14 is fixed on the lower seat plate 3 .

Example 3

The main structure of this embodiment is the same as that of Embodiment 1. The difference from Embodiment 1 is that the upper surface of the bottom plate of the lower seat plate 3 has a certain slope, which can prevent the accumulation of accumulated water on the upper surface of the bottom plate.

Example 4

The main structure of this embodiment is the same as that of Embodiment 1, and the difference from Embodiment 1 is that a guide plate 11 is installed on each side of the longitudinal bridge of the upper seat plate 1, and a dust-proof plate 11 is installed on each side of the transverse bridge. The partition 12, the two ends of the dust-proof partition 12 are attached to the guide plates 11 at each end.

The above are only preferred examples of the present invention, and are not intended to limit or limit the present invention. Various modifications and variations of the present invention are possible for researchers or those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope claimed by the present invention.

Claims (10)

1. A maintenance-free or low-maintenance bridge bearing, comprising an upper seat plate (1), a middle seat plate (2), and a lower seat plate (3). The anchor bolt assembly (4) for connecting with the bridge is characterized in that: The lower surface of the upper seat plate (1) is flat, and dust-proof partitions (12) are provided on the lower surface of the upper seat plate (1) corresponding to two or four sides, and the dust-proof partitions (12) are perpendicular to the upper seat plate (12). 1) the lower surface settings; A dust-proof baffle plate I (13) is fixed above the dust-proof baffle plate (12), and the dust-proof baffle plate I (13) is arranged perpendicular to the dust-proof baffle plate (12); The head of the anchor bolt assembly (4) is provided with a closure assembly (41) for sealing the bolt head. 2. A maintenance-free or less maintenance bridge bearing as claimed in claim 1, characterized in that: a dust-proof baffle II fixed on the lower seat plate (3) is provided below the dust-proof baffle I (13). (14), the dust-proof baffle II (14) and the dust-proof baffle I (13) form a split-layer structure. 3 . The maintenance-free or less maintenance bridge bearing according to claim 1 , wherein the dust-proof partition ( 12 ) is an arc-shaped plate. 4 . 4. A maintenance-free or less maintenance bridge bearing according to claim 1, characterized in that: the upper cylindrical surface of the lower seat plate (3) and the upper surface of the bottom plate of the lower seat plate (3) have a smooth transition, and the lower seat plate (3) has a smooth transition. The upper surface of the bottom plate of (3) has a slope inclined downward to the outside. 5. The maintenance-free or low-maintenance bridge bearing according to claim 4, characterized in that: the upper column of the lower seat plate (3) is waisted inward. 6. A maintenance-free or less maintenance bridge bearing according to claim 1, characterized in that: the closure assembly (41) comprises an anti-corrosion washer (412) and a bolt cap (411), and the bolt cap (411) is sleeved Outside the bolt head of the anchor bolt assembly (4), the inner wall of the bolt cap (411) is provided with an internal thread, and the anti-corrosion washer (412) is sleeved under the bolt head of the anchor bolt assembly (4), and the anti-corrosion washer (412) ) is provided with an external thread matched with the internal thread. 7. A maintenance-free or less maintenance bridge bearing according to claim 6, characterized in that: the anti-corrosion washer (412) and the lower part of the bolt cap (411) are pressed with an anchor bolt assembly (4) sleeved gasket (413) under the head of the bolt. 8. The maintenance-free or low-maintenance bridge support according to claim 7, wherein the sealing gasket (413) is a non-metallic gasket. 9. A maintenance-free or less maintenance bridge bearing according to claim 1, characterized in that: the upper seat plate (1) and the dust-proof partition (12) are integrally cast or connected in a split type, and when the split type is connected, the Bolted or welded. 10. A maintenance-free or less maintenance bridge bearing according to claim 1, characterized in that: the dust-proof baffle I (13) is fixed on the dust-proof barrier by one of welding, bolt connection or plug-in connection. board (12).

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